* Clean up whitespace in qa/ in preparation for .editorconfig. Convert tabs to 4 spaces. Indent by 4 spaces. Strip trailing whitespace. Ensure EOL at EOF.
*/
/*
- * The text above constitutes the entire PortAudio license; however,
+ * The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
* license above.
*/
/*==========================================================================================*/
double PaQa_GetNthFrequency( double baseFrequency, int index )
{
- // Use 13 tone equal tempered scale because it does not generate harmonic ratios.
- return baseFrequency * pow( 2.0, index / 13.0 );
+ // Use 13 tone equal tempered scale because it does not generate harmonic ratios.
+ return baseFrequency * pow( 2.0, index / 13.0 );
}
/*==========================================================================================*/
void PaQa_EraseBuffer( float *buffer, int numFrames, int samplesPerFrame )
{
- int i;
- int numSamples = numFrames * samplesPerFrame;
- for( i=0; i<numSamples; i++ )
- {
- *buffer++ = 0.0;
- }
+ int i;
+ int numSamples = numFrames * samplesPerFrame;
+ for( i=0; i<numSamples; i++ )
+ {
+ *buffer++ = 0.0;
+ }
}
/*==========================================================================================*/
void PaQa_SetupSineGenerator( PaQaSineGenerator *generator, double frequency, double amplitude, double frameRate )
{
- generator->phase = 0.0;
- generator->amplitude = amplitude;
- generator->frequency = frequency;
- generator->phaseIncrement = 2.0 * frequency * MATH_PI / frameRate;
+ generator->phase = 0.0;
+ generator->amplitude = amplitude;
+ generator->frequency = frequency;
+ generator->phaseIncrement = 2.0 * frequency * MATH_PI / frameRate;
}
/*==========================================================================================*/
void PaQa_MixSine( PaQaSineGenerator *generator, float *buffer, int numSamples, int stride )
{
- int i;
- for( i=0; i<numSamples; i++ )
- {
- float value = sinf( (float) generator->phase ) * generator->amplitude;
- *buffer += value; // Mix with existing value.
- buffer += stride;
- // Advance phase and wrap around.
- generator->phase += generator->phaseIncrement;
- if (generator->phase > MATH_TWO_PI)
- {
- generator->phase -= MATH_TWO_PI;
- }
- }
+ int i;
+ for( i=0; i<numSamples; i++ )
+ {
+ float value = sinf( (float) generator->phase ) * generator->amplitude;
+ *buffer += value; // Mix with existing value.
+ buffer += stride;
+ // Advance phase and wrap around.
+ generator->phase += generator->phaseIncrement;
+ if (generator->phase > MATH_TWO_PI)
+ {
+ generator->phase -= MATH_TWO_PI;
+ }
+ }
}
/*==========================================================================================*/
void PaQa_GenerateCrackDISABLED( float *buffer, int numSamples, int stride )
{
- int i;
- int offset = numSamples/2;
- for( i=0; i<numSamples; i++ )
- {
- float phase = (MATH_TWO_PI * 0.5 * (i - offset)) / numSamples;
- float cosp = cosf( phase );
- float cos2 = cosp * cosp;
- // invert second half of signal
- float value = (i < offset) ? cos2 : (0-cos2);
- *buffer = value;
- buffer += stride;
- }
+ int i;
+ int offset = numSamples/2;
+ for( i=0; i<numSamples; i++ )
+ {
+ float phase = (MATH_TWO_PI * 0.5 * (i - offset)) / numSamples;
+ float cosp = cosf( phase );
+ float cos2 = cosp * cosp;
+ // invert second half of signal
+ float value = (i < offset) ? cos2 : (0-cos2);
+ *buffer = value;
+ buffer += stride;
+ }
}
/*==========================================================================================*/
int PaQa_InitializeRecording( PaQaRecording *recording, int maxFrames, int frameRate )
{
- int numBytes = maxFrames * sizeof(float);
- recording->buffer = (float*)malloc(numBytes);
- QA_ASSERT_TRUE( "Allocate recording buffer.", (recording->buffer != NULL) );
- recording->maxFrames = maxFrames; recording->sampleRate = frameRate;
- recording->numFrames = 0;
- return 0;
+ int numBytes = maxFrames * sizeof(float);
+ recording->buffer = (float*)malloc(numBytes);
+ QA_ASSERT_TRUE( "Allocate recording buffer.", (recording->buffer != NULL) );
+ recording->maxFrames = maxFrames; recording->sampleRate = frameRate;
+ recording->numFrames = 0;
+ return 0;
error:
- return 1;
+ return 1;
}
/*==========================================================================================*/
void PaQa_TerminateRecording( PaQaRecording *recording )
-{
- if (recording->buffer != NULL)
- {
- free( recording->buffer );
- recording->buffer = NULL;
- }
- recording->maxFrames = 0;
+{
+ if (recording->buffer != NULL)
+ {
+ free( recording->buffer );
+ recording->buffer = NULL;
+ }
+ recording->maxFrames = 0;
}
/*==========================================================================================*/
int PaQa_WriteRecording( PaQaRecording *recording, float *buffer, int numFrames, int stride )
{
- int i;
- int framesToWrite;
+ int i;
+ int framesToWrite;
float *data = &recording->buffer[recording->numFrames];
framesToWrite = numFrames;
- if ((framesToWrite + recording->numFrames) > recording->maxFrames)
- {
- framesToWrite = recording->maxFrames - recording->numFrames;
- }
-
- for( i=0; i<framesToWrite; i++ )
- {
- *data++ = *buffer;
- buffer += stride;
- }
- recording->numFrames += framesToWrite;
- return (recording->numFrames >= recording->maxFrames);
+ if ((framesToWrite + recording->numFrames) > recording->maxFrames)
+ {
+ framesToWrite = recording->maxFrames - recording->numFrames;
+ }
+
+ for( i=0; i<framesToWrite; i++ )
+ {
+ *data++ = *buffer;
+ buffer += stride;
+ }
+ recording->numFrames += framesToWrite;
+ return (recording->numFrames >= recording->maxFrames);
}
/*==========================================================================================*/
int PaQa_WriteSilence( PaQaRecording *recording, int numFrames )
{
- int i;
- int framesToRecord;
+ int i;
+ int framesToRecord;
float *data = &recording->buffer[recording->numFrames];
framesToRecord = numFrames;
- if ((framesToRecord + recording->numFrames) > recording->maxFrames)
- {
- framesToRecord = recording->maxFrames - recording->numFrames;
- }
-
- for( i=0; i<framesToRecord; i++ )
- {
- *data++ = 0.0f;
- }
- recording->numFrames += framesToRecord;
- return (recording->numFrames >= recording->maxFrames);
+ if ((framesToRecord + recording->numFrames) > recording->maxFrames)
+ {
+ framesToRecord = recording->maxFrames - recording->numFrames;
+ }
+
+ for( i=0; i<framesToRecord; i++ )
+ {
+ *data++ = 0.0f;
+ }
+ recording->numFrames += framesToRecord;
+ return (recording->numFrames >= recording->maxFrames);
}
/*==========================================================================================*/
int PaQa_RecordFreeze( PaQaRecording *recording, int numFrames )
{
- int i;
- int framesToRecord;
+ int i;
+ int framesToRecord;
float *data = &recording->buffer[recording->numFrames];
framesToRecord = numFrames;
- if ((framesToRecord + recording->numFrames) > recording->maxFrames)
- {
- framesToRecord = recording->maxFrames - recording->numFrames;
- }
-
- for( i=0; i<framesToRecord; i++ )
- {
- // Copy old value forward as if the signal had frozen.
- data[i] = data[i-1];
- }
- recording->numFrames += framesToRecord;
- return (recording->numFrames >= recording->maxFrames);
+ if ((framesToRecord + recording->numFrames) > recording->maxFrames)
+ {
+ framesToRecord = recording->maxFrames - recording->numFrames;
+ }
+
+ for( i=0; i<framesToRecord; i++ )
+ {
+ // Copy old value forward as if the signal had frozen.
+ data[i] = data[i-1];
+ }
+ recording->numFrames += framesToRecord;
+ return (recording->numFrames >= recording->maxFrames);
}
/*==========================================================================================*/
int result = 0;
#define NUM_SAMPLES (200)
short data[NUM_SAMPLES];
- const int samplesPerFrame = 1;
+ const int samplesPerFrame = 1;
int numLeft = recording->numFrames;
- float *buffer = &recording->buffer[0];
+ float *buffer = &recording->buffer[0];
result = Audio_WAV_OpenWriter( &writer, filename, recording->sampleRate, samplesPerFrame );
if( result < 0 ) goto error;
-
- while( numLeft > 0 )
+
+ while( numLeft > 0 )
{
- int i;
+ int i;
int numToSave = (numLeft > NUM_SAMPLES) ? NUM_SAMPLES : numLeft;
- // Convert double samples to shorts.
- for( i=0; i<numToSave; i++ )
- {
- double fval = *buffer++;
- // Convert float to int and clip to short range.
- int ival = fval * 32768.0;
- if( ival > 32767 ) ival = 32767;
- else if( ival < -32768 ) ival = -32768;
- data[i] = ival;
- }
- result = Audio_WAV_WriteShorts( &writer, data, numToSave );
+ // Convert double samples to shorts.
+ for( i=0; i<numToSave; i++ )
+ {
+ double fval = *buffer++;
+ // Convert float to int and clip to short range.
+ int ival = fval * 32768.0;
+ if( ival > 32767 ) ival = 32767;
+ else if( ival < -32768 ) ival = -32768;
+ data[i] = ival;
+ }
+ result = Audio_WAV_WriteShorts( &writer, data, numToSave );
if( result < 0 ) goto error;
- numLeft -= numToSave;
+ numLeft -= numToSave;
}
-
+
result = Audio_WAV_CloseWriter( &writer );
if( result < 0 ) goto error;
-
+
return 0;
-
+
error:
printf("ERROR: result = %d\n", result );
return result;
double PaQa_MeasureCrossingSlope( float *buffer, int numFrames )
{
- int i;
- double slopeTotal = 0.0;
- int slopeCount = 0;
- float previous;
- double averageSlope = 0.0;
-
- previous = buffer[0];
- for( i=1; i<numFrames; i++ )
- {
- float current = buffer[i];
- if( (current > 0.0) && (previous < 0.0) )
- {
- double delta = current - previous;
- slopeTotal += delta;
- slopeCount += 1;
- }
- previous = current;
- }
- if( slopeCount > 0 )
- {
- averageSlope = slopeTotal / slopeCount;
- }
- return averageSlope;
+ int i;
+ double slopeTotal = 0.0;
+ int slopeCount = 0;
+ float previous;
+ double averageSlope = 0.0;
+
+ previous = buffer[0];
+ for( i=1; i<numFrames; i++ )
+ {
+ float current = buffer[i];
+ if( (current > 0.0) && (previous < 0.0) )
+ {
+ double delta = current - previous;
+ slopeTotal += delta;
+ slopeCount += 1;
+ }
+ previous = current;
+ }
+ if( slopeCount > 0 )
+ {
+ averageSlope = slopeTotal / slopeCount;
+ }
+ return averageSlope;
}
/*==========================================================================================*/
*
*/
double PaQa_MeasureSineAmplitudeBySlope( PaQaRecording *recording,
- double frequency, double frameRate,
- int startFrame, int numFrames )
+ double frequency, double frameRate,
+ int startFrame, int numFrames )
{
- float *buffer = &recording->buffer[startFrame];
- double measuredSlope = PaQa_MeasureCrossingSlope( buffer, numFrames );
- double unitySlope = sin( MATH_TWO_PI * frequency / frameRate );
- double estimatedAmplitude = measuredSlope / unitySlope;
- return estimatedAmplitude;
+ float *buffer = &recording->buffer[startFrame];
+ double measuredSlope = PaQa_MeasureCrossingSlope( buffer, numFrames );
+ double unitySlope = sin( MATH_TWO_PI * frequency / frameRate );
+ double estimatedAmplitude = measuredSlope / unitySlope;
+ return estimatedAmplitude;
}
/*==========================================================================================*/
double PaQa_CorrelateSine( PaQaRecording *recording, double frequency, double frameRate,
- int startFrame, int numFrames, double *phasePtr )
+ int startFrame, int numFrames, double *phasePtr )
{
- double magnitude = 0.0;
+ double magnitude = 0.0;
int numLeft = numFrames;
- double phase = 0.0;
- double phaseIncrement = 2.0 * MATH_PI * frequency / frameRate;
- double sinAccumulator = 0.0;
- double cosAccumulator = 0.0;
- float *data = &recording->buffer[startFrame];
+ double phase = 0.0;
+ double phaseIncrement = 2.0 * MATH_PI * frequency / frameRate;
+ double sinAccumulator = 0.0;
+ double cosAccumulator = 0.0;
+ float *data = &recording->buffer[startFrame];
QA_ASSERT_TRUE( "startFrame out of bounds", (startFrame < recording->numFrames) );
- QA_ASSERT_TRUE( "numFrames out of bounds", ((startFrame+numFrames) <= recording->numFrames) );
-
- while( numLeft > 0 )
- {
- double sample = (double) *data++;
- sinAccumulator += sample * sin( phase );
- cosAccumulator += sample * cos( phase );
- phase += phaseIncrement;
- if (phase > MATH_TWO_PI)
- {
- phase -= MATH_TWO_PI;
- }
- numLeft -= 1;
- }
- sinAccumulator = sinAccumulator / numFrames;
- cosAccumulator = cosAccumulator / numFrames;
- // TODO Why do I have to multiply by 2.0? Need it to make result come out right.
- magnitude = 2.0 * sqrt( (sinAccumulator * sinAccumulator) + (cosAccumulator * cosAccumulator ));
- if( phasePtr != NULL )
- {
- double phase = atan2( cosAccumulator, sinAccumulator );
- *phasePtr = phase;
- }
- return magnitude;
+ QA_ASSERT_TRUE( "numFrames out of bounds", ((startFrame+numFrames) <= recording->numFrames) );
+
+ while( numLeft > 0 )
+ {
+ double sample = (double) *data++;
+ sinAccumulator += sample * sin( phase );
+ cosAccumulator += sample * cos( phase );
+ phase += phaseIncrement;
+ if (phase > MATH_TWO_PI)
+ {
+ phase -= MATH_TWO_PI;
+ }
+ numLeft -= 1;
+ }
+ sinAccumulator = sinAccumulator / numFrames;
+ cosAccumulator = cosAccumulator / numFrames;
+ // TODO Why do I have to multiply by 2.0? Need it to make result come out right.
+ magnitude = 2.0 * sqrt( (sinAccumulator * sinAccumulator) + (cosAccumulator * cosAccumulator ));
+ if( phasePtr != NULL )
+ {
+ double phase = atan2( cosAccumulator, sinAccumulator );
+ *phasePtr = phase;
+ }
+ return magnitude;
error:
- return -1.0;
+ return -1.0;
}
/*==========================================================================================*/
void PaQa_FilterRecording( PaQaRecording *input, PaQaRecording *output, BiquadFilter *filter )
{
- int numToFilter = (input->numFrames > output->maxFrames) ? output->maxFrames : input->numFrames;
- BiquadFilter_Filter( filter, &input->buffer[0], &output->buffer[0], numToFilter );
- output->numFrames = numToFilter;
+ int numToFilter = (input->numFrames > output->maxFrames) ? output->maxFrames : input->numFrames;
+ BiquadFilter_Filter( filter, &input->buffer[0], &output->buffer[0], numToFilter );
+ output->numFrames = numToFilter;
}
/*==========================================================================================*/
*/
double PaQa_FindFirstMatch( PaQaRecording *recording, float *buffer, int numFrames, double threshold )
{
- int ic,is;
- // How many buffers will fit in the recording?
- int maxCorrelations = recording->numFrames - numFrames;
- double maxSum = 0.0;
- int peakIndex = -1;
- double inverseMaxSum = 0.0;
- int inversePeakIndex = -1;
- double location = -1.0;
+ int ic,is;
+ // How many buffers will fit in the recording?
+ int maxCorrelations = recording->numFrames - numFrames;
+ double maxSum = 0.0;
+ int peakIndex = -1;
+ double inverseMaxSum = 0.0;
+ int inversePeakIndex = -1;
+ double location = -1.0;
QA_ASSERT_TRUE( "numFrames out of bounds", (numFrames < recording->numFrames) );
- for( ic=0; ic<maxCorrelations; ic++ )
- {
- int pastPeak;
- int inversePastPeak;
-
- double sum = 0.0;
- // Correlate buffer against the recording.
- float *recorded = &recording->buffer[ ic ];
- for( is=0; is<numFrames; is++ )
- {
- float s1 = buffer[is];
- float s2 = *recorded++;
- sum += s1 * s2;
- }
- if( (sum > maxSum) )
- {
- maxSum = sum;
- peakIndex = ic;
- }
- if( ((-sum) > inverseMaxSum) )
- {
- inverseMaxSum = -sum;
- inversePeakIndex = ic;
- }
- pastPeak = (maxSum > threshold) && (sum < 0.5*maxSum);
- inversePastPeak = (inverseMaxSum > threshold) && ((-sum) < 0.5*inverseMaxSum);
- //printf("PaQa_FindFirstMatch: ic = %4d, sum = %8f, maxSum = %8f, inverseMaxSum = %8f\n", ic, sum, maxSum, inverseMaxSum );
- if( pastPeak && inversePastPeak )
- {
- if( maxSum > inverseMaxSum )
- {
- location = peakIndex;
- }
- else
- {
- location = inversePeakIndex;
- }
- break;
- }
-
- }
- //printf("PaQa_FindFirstMatch: location = %4d\n", (int)location );
- return location;
+ for( ic=0; ic<maxCorrelations; ic++ )
+ {
+ int pastPeak;
+ int inversePastPeak;
+
+ double sum = 0.0;
+ // Correlate buffer against the recording.
+ float *recorded = &recording->buffer[ ic ];
+ for( is=0; is<numFrames; is++ )
+ {
+ float s1 = buffer[is];
+ float s2 = *recorded++;
+ sum += s1 * s2;
+ }
+ if( (sum > maxSum) )
+ {
+ maxSum = sum;
+ peakIndex = ic;
+ }
+ if( ((-sum) > inverseMaxSum) )
+ {
+ inverseMaxSum = -sum;
+ inversePeakIndex = ic;
+ }
+ pastPeak = (maxSum > threshold) && (sum < 0.5*maxSum);
+ inversePastPeak = (inverseMaxSum > threshold) && ((-sum) < 0.5*inverseMaxSum);
+ //printf("PaQa_FindFirstMatch: ic = %4d, sum = %8f, maxSum = %8f, inverseMaxSum = %8f\n", ic, sum, maxSum, inverseMaxSum );
+ if( pastPeak && inversePastPeak )
+ {
+ if( maxSum > inverseMaxSum )
+ {
+ location = peakIndex;
+ }
+ else
+ {
+ location = inversePeakIndex;
+ }
+ break;
+ }
+
+ }
+ //printf("PaQa_FindFirstMatch: location = %4d\n", (int)location );
+ return location;
error:
- return -1.0;
+ return -1.0;
}
/*==========================================================================================*/
// Measure the area under the curve by summing absolute value of each value.
double PaQa_MeasureArea( float *buffer, int numFrames, int stride )
{
- int is;
- double area = 0.0;
- for( is=0; is<numFrames; is++ )
- {
- area += fabs( *buffer );
- buffer += stride;
- }
- return area;
+ int is;
+ double area = 0.0;
+ for( is=0; is<numFrames; is++ )
+ {
+ area += fabs( *buffer );
+ buffer += stride;
+ }
+ return area;
}
/*==========================================================================================*/
// Measure the area under the curve by summing absolute value of each value.
double PaQa_MeasureRootMeanSquare( float *buffer, int numFrames )
{
- int is;
- double area = 0.0;
- double root;
- for( is=0; is<numFrames; is++ )
- {
- float value = *buffer++;
- area += value * value;
- }
- root = sqrt( area );
- return root / numFrames;
+ int is;
+ double area = 0.0;
+ double root;
+ for( is=0; is<numFrames; is++ )
+ {
+ float value = *buffer++;
+ area += value * value;
+ }
+ root = sqrt( area );
+ return root / numFrames;
}
double PaQa_CompareAmplitudes( PaQaRecording *recording, int startAt, float *buffer, int numFrames )
{
- QA_ASSERT_TRUE( "startAt+numFrames out of bounds", ((startAt+numFrames) < recording->numFrames) );
+ QA_ASSERT_TRUE( "startAt+numFrames out of bounds", ((startAt+numFrames) < recording->numFrames) );
{
- double recordedArea = PaQa_MeasureArea( &recording->buffer[startAt], numFrames, 1 );
- double bufferArea = PaQa_MeasureArea( buffer, numFrames, 1 );
- if( bufferArea == 0.0 ) return 100000000.0;
- return recordedArea / bufferArea;
+ double recordedArea = PaQa_MeasureArea( &recording->buffer[startAt], numFrames, 1 );
+ double bufferArea = PaQa_MeasureArea( buffer, numFrames, 1 );
+ if( bufferArea == 0.0 ) return 100000000.0;
+ return recordedArea / bufferArea;
}
error:
- return -1.0;
+ return -1.0;
}
/*==========================================================================================*/
double PaQa_ComputePhaseDifference( double phase1, double phase2 )
{
- double delta = phase1 - phase2;
- while( delta > MATH_PI )
- {
- delta -= MATH_TWO_PI;
- }
- while( delta < -MATH_PI )
- {
- delta += MATH_TWO_PI;
- }
- return delta;
+ double delta = phase1 - phase2;
+ while( delta > MATH_PI )
+ {
+ delta -= MATH_TWO_PI;
+ }
+ while( delta < -MATH_PI )
+ {
+ delta += MATH_TWO_PI;
+ }
+ return delta;
}
/*==========================================================================================*/
int PaQa_MeasureLatency( PaQaRecording *recording, PaQaTestTone *testTone, PaQaAnalysisResult *analysisResult )
{
- double threshold;
- PaQaSineGenerator generator;
+ double threshold;
+ PaQaSineGenerator generator;
#define MAX_BUFFER_SIZE 2048
- float buffer[MAX_BUFFER_SIZE];
- double period = testTone->sampleRate / testTone->frequency;
- int cycleSize = (int) (period + 0.5);
- //printf("PaQa_AnalyseRecording: frequency = %8f, frameRate = %8f, period = %8f, cycleSize = %8d\n",
- // testTone->frequency, testTone->sampleRate, period, cycleSize );
- analysisResult->latency = -1;
- analysisResult->valid = (0);
-
- // Set up generator to find matching first cycle.
- QA_ASSERT_TRUE( "cycleSize out of bounds", (cycleSize < MAX_BUFFER_SIZE) );
- PaQa_SetupSineGenerator( &generator, testTone->frequency, testTone->amplitude, testTone->sampleRate );
- PaQa_EraseBuffer( buffer, cycleSize, testTone->samplesPerFrame );
- PaQa_MixSine( &generator, buffer, cycleSize, testTone->samplesPerFrame );
-
- threshold = cycleSize * 0.02;
- analysisResult->latency = PaQa_FindFirstMatch( recording, buffer, cycleSize, threshold );
- QA_ASSERT_TRUE( "Could not find the start of the signal.", (analysisResult->latency >= 0) );
- analysisResult->amplitudeRatio = PaQa_CompareAmplitudes( recording, analysisResult->latency, buffer, cycleSize );
- return 0;
+ float buffer[MAX_BUFFER_SIZE];
+ double period = testTone->sampleRate / testTone->frequency;
+ int cycleSize = (int) (period + 0.5);
+ //printf("PaQa_AnalyseRecording: frequency = %8f, frameRate = %8f, period = %8f, cycleSize = %8d\n",
+ // testTone->frequency, testTone->sampleRate, period, cycleSize );
+ analysisResult->latency = -1;
+ analysisResult->valid = (0);
+
+ // Set up generator to find matching first cycle.
+ QA_ASSERT_TRUE( "cycleSize out of bounds", (cycleSize < MAX_BUFFER_SIZE) );
+ PaQa_SetupSineGenerator( &generator, testTone->frequency, testTone->amplitude, testTone->sampleRate );
+ PaQa_EraseBuffer( buffer, cycleSize, testTone->samplesPerFrame );
+ PaQa_MixSine( &generator, buffer, cycleSize, testTone->samplesPerFrame );
+
+ threshold = cycleSize * 0.02;
+ analysisResult->latency = PaQa_FindFirstMatch( recording, buffer, cycleSize, threshold );
+ QA_ASSERT_TRUE( "Could not find the start of the signal.", (analysisResult->latency >= 0) );
+ analysisResult->amplitudeRatio = PaQa_CompareAmplitudes( recording, analysisResult->latency, buffer, cycleSize );
+ return 0;
error:
- return -1;
+ return -1;
}
/*==========================================================================================*/
// Apply cosine squared window.
void PaQa_FadeInRecording( PaQaRecording *recording, int startFrame, int count )
{
- int is;
- double phase = 0.5 * MATH_PI;
- // Advance a quarter wave
- double phaseIncrement = 0.25 * 2.0 * MATH_PI / count;
-
+ int is;
+ double phase = 0.5 * MATH_PI;
+ // Advance a quarter wave
+ double phaseIncrement = 0.25 * 2.0 * MATH_PI / count;
+
assert( startFrame >= 0 );
- assert( count > 0 );
-
+ assert( count > 0 );
+
/* Zero out initial part of the recording. */
- for( is=0; is<startFrame; is++ )
- {
+ for( is=0; is<startFrame; is++ )
+ {
recording->buffer[ is ] = 0.0f;
}
/* Fade in where signal begins. */
for( is=0; is<count; is++ )
{
- double c = cos( phase );
- double w = c * c;
- float x = recording->buffer[ is + startFrame ];
- float y = x * w;
- //printf("FADE %d : w=%f, x=%f, y=%f\n", is, w, x, y );
- recording->buffer[ is + startFrame ] = y;
+ double c = cos( phase );
+ double w = c * c;
+ float x = recording->buffer[ is + startFrame ];
+ float y = x * w;
+ //printf("FADE %d : w=%f, x=%f, y=%f\n", is, w, x, y );
+ recording->buffer[ is + startFrame ] = y;
phase += phaseIncrement;
- }
+ }
}
/** Apply notch filter and high pass filter then detect remaining energy.
*/
int PaQa_DetectPop( PaQaRecording *recording, PaQaTestTone *testTone, PaQaAnalysisResult *analysisResult )
-{
+{
int result = 0;
- int i;
+ int i;
double maxAmplitude;
- int maxPosition;
-
- PaQaRecording notchOutput = { 0 };
- BiquadFilter notchFilter;
-
- PaQaRecording hipassOutput = { 0 };
- BiquadFilter hipassFilter;
-
- int frameRate = (int) recording->sampleRate;
-
- analysisResult->popPosition = -1;
- analysisResult->popAmplitude = 0.0;
-
- result = PaQa_InitializeRecording( ¬chOutput, recording->numFrames, frameRate );
- QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
-
- result = PaQa_InitializeRecording( &hipassOutput, recording->numFrames, frameRate );
- QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
-
- // Use notch filter to remove test tone.
- BiquadFilter_SetupNotch( ¬chFilter, testTone->frequency / frameRate, 0.5 );
- PaQa_FilterRecording( recording, ¬chOutput, ¬chFilter );
- //result = PaQa_SaveRecordingToWaveFile( ¬chOutput, "notch_output.wav" );
- //QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result );
-
- // Apply fade-in window.
- PaQa_FadeInRecording( ¬chOutput, (int) analysisResult->latency, 500 );
-
- // Use high pass to accentuate the edges of a pop. At higher frequency!
- BiquadFilter_SetupHighPass( &hipassFilter, 2.0 * testTone->frequency / frameRate, 0.5 );
- PaQa_FilterRecording( ¬chOutput, &hipassOutput, &hipassFilter );
- //result = PaQa_SaveRecordingToWaveFile( &hipassOutput, "hipass_output.wav" );
- //QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result );
-
- // Scan remaining signal looking for peak.
- maxAmplitude = 0.0;
- maxPosition = -1;
- for( i=(int) analysisResult->latency; i<hipassOutput.numFrames; i++ )
- {
- float x = hipassOutput.buffer[i];
- float mag = fabs( x );
- if( mag > maxAmplitude )
- {
- maxAmplitude = mag;
- maxPosition = i;
- }
- }
-
- if( maxAmplitude > PAQA_POP_THRESHOLD )
- {
- analysisResult->popPosition = maxPosition;
- analysisResult->popAmplitude = maxAmplitude;
- }
-
- PaQa_TerminateRecording( ¬chOutput );
- PaQa_TerminateRecording( &hipassOutput );
- return 0;
-
+ int maxPosition;
+
+ PaQaRecording notchOutput = { 0 };
+ BiquadFilter notchFilter;
+
+ PaQaRecording hipassOutput = { 0 };
+ BiquadFilter hipassFilter;
+
+ int frameRate = (int) recording->sampleRate;
+
+ analysisResult->popPosition = -1;
+ analysisResult->popAmplitude = 0.0;
+
+ result = PaQa_InitializeRecording( ¬chOutput, recording->numFrames, frameRate );
+ QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
+
+ result = PaQa_InitializeRecording( &hipassOutput, recording->numFrames, frameRate );
+ QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
+
+ // Use notch filter to remove test tone.
+ BiquadFilter_SetupNotch( ¬chFilter, testTone->frequency / frameRate, 0.5 );
+ PaQa_FilterRecording( recording, ¬chOutput, ¬chFilter );
+ //result = PaQa_SaveRecordingToWaveFile( ¬chOutput, "notch_output.wav" );
+ //QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result );
+
+ // Apply fade-in window.
+ PaQa_FadeInRecording( ¬chOutput, (int) analysisResult->latency, 500 );
+
+ // Use high pass to accentuate the edges of a pop. At higher frequency!
+ BiquadFilter_SetupHighPass( &hipassFilter, 2.0 * testTone->frequency / frameRate, 0.5 );
+ PaQa_FilterRecording( ¬chOutput, &hipassOutput, &hipassFilter );
+ //result = PaQa_SaveRecordingToWaveFile( &hipassOutput, "hipass_output.wav" );
+ //QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result );
+
+ // Scan remaining signal looking for peak.
+ maxAmplitude = 0.0;
+ maxPosition = -1;
+ for( i=(int) analysisResult->latency; i<hipassOutput.numFrames; i++ )
+ {
+ float x = hipassOutput.buffer[i];
+ float mag = fabs( x );
+ if( mag > maxAmplitude )
+ {
+ maxAmplitude = mag;
+ maxPosition = i;
+ }
+ }
+
+ if( maxAmplitude > PAQA_POP_THRESHOLD )
+ {
+ analysisResult->popPosition = maxPosition;
+ analysisResult->popAmplitude = maxAmplitude;
+ }
+
+ PaQa_TerminateRecording( ¬chOutput );
+ PaQa_TerminateRecording( &hipassOutput );
+ return 0;
+
error:
- PaQa_TerminateRecording( ¬chOutput );
- PaQa_TerminateRecording( &hipassOutput );
- return -1;
+ PaQa_TerminateRecording( ¬chOutput );
+ PaQa_TerminateRecording( &hipassOutput );
+ return -1;
}
/*==========================================================================================*/
int PaQa_DetectPhaseError( PaQaRecording *recording, PaQaTestTone *testTone, PaQaAnalysisResult *analysisResult )
-{
- int i;
- double period = testTone->sampleRate / testTone->frequency;
- int cycleSize = (int) (period + 0.5);
-
- double maxAddedFrames = 0.0;
- double maxDroppedFrames = 0.0;
-
- double previousPhase = 0.0;
- double previousFrameError = 0;
- int loopCount = 0;
- int skip = cycleSize;
- int windowSize = cycleSize;
+{
+ int i;
+ double period = testTone->sampleRate / testTone->frequency;
+ int cycleSize = (int) (period + 0.5);
+
+ double maxAddedFrames = 0.0;
+ double maxDroppedFrames = 0.0;
+
+ double previousPhase = 0.0;
+ double previousFrameError = 0;
+ int loopCount = 0;
+ int skip = cycleSize;
+ int windowSize = cycleSize;
// Scan recording starting with first cycle, looking for phase errors.
- analysisResult->numDroppedFrames = 0.0;
- analysisResult->numAddedFrames = 0.0;
- analysisResult->droppedFramesPosition = -1.0;
- analysisResult->addedFramesPosition = -1.0;
-
- for( i=analysisResult->latency; i<(recording->numFrames - windowSize); i += skip )
- {
- double expectedPhase = previousPhase + (skip * MATH_TWO_PI / period);
- double expectedPhaseIncrement = PaQa_ComputePhaseDifference( expectedPhase, previousPhase );
-
- double phase = 666.0;
- double mag = PaQa_CorrelateSine( recording, testTone->frequency, testTone->sampleRate, i, windowSize, &phase );
- if( (loopCount > 1) && (mag > 0.0) )
- {
- double phaseDelta = PaQa_ComputePhaseDifference( phase, previousPhase );
- double phaseError = PaQa_ComputePhaseDifference( phaseDelta, expectedPhaseIncrement );
- // Convert phaseError to equivalent number of frames.
- double frameError = period * phaseError / MATH_TWO_PI;
- double consecutiveFrameError = frameError + previousFrameError;
-// if( fabs(frameError) > 0.01 )
-// {
-// printf("FFFFFFFFFFFFF frameError = %f, at %d\n", frameError, i );
-// }
- if( consecutiveFrameError > 0.8 )
- {
- double droppedFrames = consecutiveFrameError;
- if (droppedFrames > (maxDroppedFrames * 1.001))
- {
- analysisResult->numDroppedFrames = droppedFrames;
- analysisResult->droppedFramesPosition = i + (windowSize/2);
- maxDroppedFrames = droppedFrames;
- }
- }
- else if( consecutiveFrameError < -0.8 )
- {
- double addedFrames = 0 - consecutiveFrameError;
- if (addedFrames > (maxAddedFrames * 1.001))
- {
- analysisResult->numAddedFrames = addedFrames;
- analysisResult->addedFramesPosition = i + (windowSize/2);
- maxAddedFrames = addedFrames;
- }
- }
- previousFrameError = frameError;
-
-
- //if( i<8000 )
- //{
- // printf("%d: phase = %8f, expected = %8f, delta = %8f, frameError = %8f\n", i, phase, expectedPhaseIncrement, phaseDelta, frameError );
- //}
- }
- previousPhase = phase;
- loopCount += 1;
- }
- return 0;
+ analysisResult->numDroppedFrames = 0.0;
+ analysisResult->numAddedFrames = 0.0;
+ analysisResult->droppedFramesPosition = -1.0;
+ analysisResult->addedFramesPosition = -1.0;
+
+ for( i=analysisResult->latency; i<(recording->numFrames - windowSize); i += skip )
+ {
+ double expectedPhase = previousPhase + (skip * MATH_TWO_PI / period);
+ double expectedPhaseIncrement = PaQa_ComputePhaseDifference( expectedPhase, previousPhase );
+
+ double phase = 666.0;
+ double mag = PaQa_CorrelateSine( recording, testTone->frequency, testTone->sampleRate, i, windowSize, &phase );
+ if( (loopCount > 1) && (mag > 0.0) )
+ {
+ double phaseDelta = PaQa_ComputePhaseDifference( phase, previousPhase );
+ double phaseError = PaQa_ComputePhaseDifference( phaseDelta, expectedPhaseIncrement );
+ // Convert phaseError to equivalent number of frames.
+ double frameError = period * phaseError / MATH_TWO_PI;
+ double consecutiveFrameError = frameError + previousFrameError;
+// if( fabs(frameError) > 0.01 )
+// {
+// printf("FFFFFFFFFFFFF frameError = %f, at %d\n", frameError, i );
+// }
+ if( consecutiveFrameError > 0.8 )
+ {
+ double droppedFrames = consecutiveFrameError;
+ if (droppedFrames > (maxDroppedFrames * 1.001))
+ {
+ analysisResult->numDroppedFrames = droppedFrames;
+ analysisResult->droppedFramesPosition = i + (windowSize/2);
+ maxDroppedFrames = droppedFrames;
+ }
+ }
+ else if( consecutiveFrameError < -0.8 )
+ {
+ double addedFrames = 0 - consecutiveFrameError;
+ if (addedFrames > (maxAddedFrames * 1.001))
+ {
+ analysisResult->numAddedFrames = addedFrames;
+ analysisResult->addedFramesPosition = i + (windowSize/2);
+ maxAddedFrames = addedFrames;
+ }
+ }
+ previousFrameError = frameError;
+
+
+ //if( i<8000 )
+ //{
+ // printf("%d: phase = %8f, expected = %8f, delta = %8f, frameError = %8f\n", i, phase, expectedPhaseIncrement, phaseDelta, frameError );
+ //}
+ }
+ previousPhase = phase;
+ loopCount += 1;
+ }
+ return 0;
}
/*==========================================================================================*/
{
int result = 0;
- memset( analysisResult, 0, sizeof(PaQaAnalysisResult) );
- result = PaQa_MeasureLatency( recording, testTone, analysisResult );
+ memset( analysisResult, 0, sizeof(PaQaAnalysisResult) );
+ result = PaQa_MeasureLatency( recording, testTone, analysisResult );
QA_ASSERT_EQUALS( "latency measurement", 0, result );
-
- if( (analysisResult->latency >= 0) && (analysisResult->amplitudeRatio > 0.1) )
- {
- analysisResult->valid = (1);
-
- result = PaQa_DetectPop( recording, testTone, analysisResult );
- QA_ASSERT_EQUALS( "detect pop", 0, result );
-
- result = PaQa_DetectPhaseError( recording, testTone, analysisResult );
- QA_ASSERT_EQUALS( "detect phase error", 0, result );
- }
- return 0;
+
+ if( (analysisResult->latency >= 0) && (analysisResult->amplitudeRatio > 0.1) )
+ {
+ analysisResult->valid = (1);
+
+ result = PaQa_DetectPop( recording, testTone, analysisResult );
+ QA_ASSERT_EQUALS( "detect pop", 0, result );
+
+ result = PaQa_DetectPhaseError( recording, testTone, analysisResult );
+ QA_ASSERT_EQUALS( "detect phase error", 0, result );
+ }
+ return 0;
error:
- return -1;
+ return -1;
}
*/
/*
- * The text above constitutes the entire PortAudio license; however,
+ * The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
* license above.
*/
typedef struct PaQaSineGenerator_s
{
- double phase;
- double phaseIncrement;
- double frequency;
- double amplitude;
+ double phase;
+ double phaseIncrement;
+ double frequency;
+ double amplitude;
} PaQaSineGenerator;
-/** Container for a monophonic audio sample in memory. */
+/** Container for a monophonic audio sample in memory. */
typedef struct PaQaRecording_s
{
- /** Maximum number of frames that can fit in the allocated buffer. */
- int maxFrames;
- float *buffer;
- /** Actual number of valid frames in the buffer. */
- int numFrames;
- int sampleRate;
+ /** Maximum number of frames that can fit in the allocated buffer. */
+ int maxFrames;
+ float *buffer;
+ /** Actual number of valid frames in the buffer. */
+ int numFrames;
+ int sampleRate;
} PaQaRecording;
typedef struct PaQaTestTone_s
{
- int samplesPerFrame;
- int startDelay;
- double sampleRate;
- double frequency;
- double amplitude;
+ int samplesPerFrame;
+ int startDelay;
+ double sampleRate;
+ double frequency;
+ double amplitude;
} PaQaTestTone;
typedef struct PaQaAnalysisResult_s
{
- int valid;
- /** Latency in samples from output to input. */
- double latency;
- double amplitudeRatio;
- double popAmplitude;
- double popPosition;
- double numDroppedFrames;
- double droppedFramesPosition;
- double numAddedFrames;
- double addedFramesPosition;
+ int valid;
+ /** Latency in samples from output to input. */
+ double latency;
+ double amplitudeRatio;
+ double popAmplitude;
+ double popPosition;
+ double numDroppedFrames;
+ double droppedFramesPosition;
+ double numAddedFrames;
+ double addedFramesPosition;
} PaQaAnalysisResult;
void PaQa_MixSine( PaQaSineGenerator *generator, float *buffer, int numSamples, int stride );
void PaQa_WriteSine( float *buffer, int numSamples, int stride,
- double frequency, double amplitude );
+ double frequency, double amplitude );
/**
* Generate a signal with a sharp edge in the middle that can be recognized despite some phase shift.
* Allocate memory for containing a mono audio signal. Set up recording for writing.
*/
int PaQa_InitializeRecording( PaQaRecording *recording, int maxSamples, int sampleRate );
-
+
/**
* Free memory allocated by PaQa_InitializeRecording.
*/
void PaQa_TerminateRecording( PaQaRecording *recording );
-
+
/**
* Apply a biquad filter to the audio from the input recording and write it to the output recording.
*/
int PaQa_SaveRecordingToWaveFile( PaQaRecording *recording, const char *filename );
-
+
/**
* @param stride is the spacing of samples to skip in the input buffer. To use every samples pass 1. To use every other sample pass 2.
*/
int PaQa_WriteRecording( PaQaRecording *recording, float *buffer, int numSamples, int stride );
-
+
/** Write zeros into a recording. */
int PaQa_WriteSilence( PaQaRecording *recording, int numSamples );
-
+
int PaQa_RecordFreeze( PaQaRecording *recording, int numSamples );
double PaQa_CorrelateSine( PaQaRecording *recording, double frequency, double frameRate,
- int startFrame, int numSamples, double *phasePtr );
+ int startFrame, int numSamples, double *phasePtr );
double PaQa_FindFirstMatch( PaQaRecording *recording, float *buffer, int numSamples, double tolerance );
-/**
+/**
* Estimate the original amplitude of a clipped sine wave by measuring
* its average slope at the zero crossings.
*/
double PaQa_MeasureSineAmplitudeBySlope( PaQaRecording *recording,
- double frequency, double frameRate,
- int startFrame, int numFrames );
+ double frequency, double frameRate,
+ int startFrame, int numFrames );
double PaQa_MeasureRootMeanSquare( float *buffer, int numFrames );
#include "biquad_filter.h"
/**
- * Unit_BiquadFilter implements a second order IIR filter.
- Here is the equation that we use for this filter:
- y(n) = a0*x(n) + a1*x(n-1) + a2*x(n-2) - b1*y(n-1) - b2*y(n-2)
+ * Unit_BiquadFilter implements a second order IIR filter.
+ *
+ * Here is the equation that we use for this filter:
+ * y(n) = a0*x(n) + a1*x(n-1) + a2*x(n-2) - b1*y(n-1) - b2*y(n-2)
*
* @author (C) 2002 Phil Burk, SoftSynth.com, All Rights Reserved
*/
*/
static void BiquadFilter_CalculateCommon( BiquadFilter *filter, double ratio, double Q )
{
- double omega;
-
- memset( filter, 0, sizeof(BiquadFilter) );
+ double omega;
+
+ memset( filter, 0, sizeof(BiquadFilter) );
/* Don't let frequency get too close to Nyquist or filter will blow up. */
- if( ratio >= 0.499 ) ratio = 0.499;
- omega = 2.0 * (double)FILTER_PI * ratio;
+ if( ratio >= 0.499 ) ratio = 0.499;
+ omega = 2.0 * (double)FILTER_PI * ratio;
- filter->cos_omega = (double) cos( omega );
- filter->sin_omega = (double) sin( omega );
- filter->alpha = filter->sin_omega / (2.0 * Q);
+ filter->cos_omega = (double) cos( omega );
+ filter->sin_omega = (double) sin( omega );
+ filter->alpha = filter->sin_omega / (2.0 * Q);
}
/*********************************************************************************
*/
void BiquadFilter_SetupHighPass( BiquadFilter *filter, double ratio, double Q )
{
- double scalar, opc;
-
- if( ratio < BIQUAD_MIN_RATIO ) ratio = BIQUAD_MIN_RATIO;
- if( Q < BIQUAD_MIN_Q ) Q = BIQUAD_MIN_Q;
-
- BiquadFilter_CalculateCommon( filter, ratio, Q );
-
- scalar = 1.0 / (1.0 + filter->alpha);
- opc = (1.0 + filter->cos_omega);
-
- filter->a0 = opc * 0.5 * scalar;
- filter->a1 = - opc * scalar;
+ double scalar, opc;
+
+ if( ratio < BIQUAD_MIN_RATIO ) ratio = BIQUAD_MIN_RATIO;
+ if( Q < BIQUAD_MIN_Q ) Q = BIQUAD_MIN_Q;
+
+ BiquadFilter_CalculateCommon( filter, ratio, Q );
+
+ scalar = 1.0 / (1.0 + filter->alpha);
+ opc = (1.0 + filter->cos_omega);
+
+ filter->a0 = opc * 0.5 * scalar;
+ filter->a1 = - opc * scalar;
filter->a2 = filter->a0;
- filter->b1 = -2.0 * filter->cos_omega * scalar;
- filter->b2 = (1.0 - filter->alpha) * scalar;
+ filter->b1 = -2.0 * filter->cos_omega * scalar;
+ filter->b2 = (1.0 - filter->alpha) * scalar;
}
*/
void BiquadFilter_SetupNotch( BiquadFilter *filter, double ratio, double Q )
{
- double scalar, opc;
-
- if( ratio < BIQUAD_MIN_RATIO ) ratio = BIQUAD_MIN_RATIO;
- if( Q < BIQUAD_MIN_Q ) Q = BIQUAD_MIN_Q;
-
- BiquadFilter_CalculateCommon( filter, ratio, Q );
-
- scalar = 1.0 / (1.0 + filter->alpha);
- opc = (1.0 + filter->cos_omega);
-
- filter->a0 = scalar;
- filter->a1 = -2.0 * filter->cos_omega * scalar;
+ double scalar, opc;
+
+ if( ratio < BIQUAD_MIN_RATIO ) ratio = BIQUAD_MIN_RATIO;
+ if( Q < BIQUAD_MIN_Q ) Q = BIQUAD_MIN_Q;
+
+ BiquadFilter_CalculateCommon( filter, ratio, Q );
+
+ scalar = 1.0 / (1.0 + filter->alpha);
+ opc = (1.0 + filter->cos_omega);
+
+ filter->a0 = scalar;
+ filter->a1 = -2.0 * filter->cos_omega * scalar;
filter->a2 = filter->a0;
- filter->b1 = filter->a1;
- filter->b2 = (1.0 - filter->alpha) * scalar;
+ filter->b1 = filter->a1;
+ filter->b2 = (1.0 - filter->alpha) * scalar;
}
/*****************************************************************
*/
void BiquadFilter_Filter( BiquadFilter *filter, float *inputs, float *outputs, int numSamples )
{
- int i;
+ int i;
double xn, yn;
- // Pull values from structure to speed up the calculation.
- double a0 = filter->a0;
- double a1 = filter->a1;
- double a2 = filter->a2;
- double b1 = filter->b1;
- double b2 = filter->b2;
- double xn1 = filter->xn1;
- double xn2 = filter->xn2;
- double yn1 = filter->yn1;
- double yn2 = filter->yn2;
-
- for( i=0; i<numSamples; i++)
- {
- // Generate outputs by filtering inputs.
- xn = inputs[i];
- yn = (a0 * xn) + (a1 * xn1) + (a2 * xn2) - (b1 * yn1) - (b2 * yn2);
- outputs[i] = yn;
-
- // Delay input and output values.
+ // Pull values from structure to speed up the calculation.
+ double a0 = filter->a0;
+ double a1 = filter->a1;
+ double a2 = filter->a2;
+ double b1 = filter->b1;
+ double b2 = filter->b2;
+ double xn1 = filter->xn1;
+ double xn2 = filter->xn2;
+ double yn1 = filter->yn1;
+ double yn2 = filter->yn2;
+
+ for( i=0; i<numSamples; i++)
+ {
+ // Generate outputs by filtering inputs.
+ xn = inputs[i];
+ yn = (a0 * xn) + (a1 * xn1) + (a2 * xn2) - (b1 * yn1) - (b2 * yn2);
+ outputs[i] = yn;
+
+ // Delay input and output values.
xn2 = xn1;
xn1 = xn;
yn2 = yn1;
yn1 = yn;
-
- if( (i & 7) == 0 )
- {
- // Apply a small bipolar impulse to filter to prevent arithmetic underflow.
- // Underflows can cause the FPU to interrupt the CPU.
- yn1 += (double) 1.0E-26;
- yn2 -= (double) 1.0E-26;
- }
- }
-
- filter->xn1 = xn1;
- filter->xn2 = xn2;
- filter->yn1 = yn1;
- filter->yn2 = yn2;
+
+ if( (i & 7) == 0 )
+ {
+ // Apply a small bipolar impulse to filter to prevent arithmetic underflow.
+ // Underflows can cause the FPU to interrupt the CPU.
+ yn1 += (double) 1.0E-26;
+ yn2 -= (double) 1.0E-26;
+ }
+ }
+
+ filter->xn1 = xn1;
+ filter->xn2 = xn2;
+ filter->yn1 = yn1;
+ filter->yn2 = yn2;
}
/**
- * Unit_BiquadFilter implements a second order IIR filter.
+ * Unit_BiquadFilter implements a second order IIR filter.
*
* @author (C) 2002 Phil Burk, SoftSynth.com, All Rights Reserved
*/
typedef struct BiquadFilter_s
{
double xn1; // storage for delayed signals
- double xn2;
- double yn1;
- double yn2;
+ double xn2;
+ double yn1;
+ double yn2;
- double a0; // coefficients
- double a1;
- double a2;
+ double a0; // coefficients
+ double a1;
+ double a2;
- double b1;
- double b2;
+ double b1;
+ double b2;
- double cos_omega;
- double sin_omega;
- double alpha;
+ double cos_omega;
+ double sin_omega;
+ double alpha;
} BiquadFilter;
void BiquadFilter_SetupHighPass( BiquadFilter *filter, double ratio, double Q );
*/
/*
- * The text above constitutes the entire PortAudio license; however,
+ * The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
* license above.
*/
const char * s_FlagOnNames[] =
{
- "Two Streams (Half Duplex)",
- "Blocking Read/Write"
+ "Two Streams (Half Duplex)",
+ "Blocking Read/Write"
};
const char * s_FlagOffNames[] =
{
- "One Stream (Full Duplex)",
- "Callback"
+ "One Stream (Full Duplex)",
+ "Callback"
};
/** Parameters that describe a single test run. */
typedef struct TestParameters_s
{
- PaStreamParameters inputParameters;
- PaStreamParameters outputParameters;
- double sampleRate;
- int samplesPerFrame;
- int framesPerBuffer;
- int maxFrames;
- double baseFrequency;
- double amplitude;
+ PaStreamParameters inputParameters;
+ PaStreamParameters outputParameters;
+ double sampleRate;
+ int samplesPerFrame;
+ int framesPerBuffer;
+ int maxFrames;
+ double baseFrequency;
+ double amplitude;
PaStreamFlags streamFlags; // paClipOff, etc
- int flags; // PAQA_FLAG_TWO_STREAMS, PAQA_FLAG_USE_BLOCKING_IO
+ int flags; // PAQA_FLAG_TWO_STREAMS, PAQA_FLAG_USE_BLOCKING_IO
} TestParameters;
typedef struct LoopbackContext_s
{
- // Generate a unique signal on each channel.
- PaQaSineGenerator generators[MAX_NUM_GENERATORS];
- // Record each channel individually.
- PaQaRecording recordings[MAX_NUM_RECORDINGS];
-
- // Reported by the stream after it's opened
- PaTime streamInfoInputLatency;
- PaTime streamInfoOutputLatency;
-
- // Measured at runtime.
- volatile int callbackCount; // incremented for each callback
- volatile int inputBufferCount; // incremented if input buffer not NULL
- int inputUnderflowCount;
- int inputOverflowCount;
-
- volatile int outputBufferCount; // incremented if output buffer not NULL
- int outputOverflowCount;
- int outputUnderflowCount;
-
+ // Generate a unique signal on each channel.
+ PaQaSineGenerator generators[MAX_NUM_GENERATORS];
+ // Record each channel individually.
+ PaQaRecording recordings[MAX_NUM_RECORDINGS];
+
+ // Reported by the stream after it's opened
+ PaTime streamInfoInputLatency;
+ PaTime streamInfoOutputLatency;
+
+ // Measured at runtime.
+ volatile int callbackCount; // incremented for each callback
+ volatile int inputBufferCount; // incremented if input buffer not NULL
+ int inputUnderflowCount;
+ int inputOverflowCount;
+
+ volatile int outputBufferCount; // incremented if output buffer not NULL
+ int outputOverflowCount;
+ int outputUnderflowCount;
+
// Measure whether input or output is lagging behind.
volatile int minInputOutputDelta;
volatile int maxInputOutputDelta;
-
- int minFramesPerBuffer;
- int maxFramesPerBuffer;
- int primingCount;
- TestParameters *test;
- volatile int done;
+
+ int minFramesPerBuffer;
+ int maxFramesPerBuffer;
+ int primingCount;
+ TestParameters *test;
+ volatile int done;
} LoopbackContext;
typedef struct UserOptions_s
{
- int sampleRate;
- int framesPerBuffer;
- int inputLatency;
- int outputLatency;
- int saveBadWaves;
- int verbose;
- int waveFileCount;
- const char *waveFilePath;
- PaDeviceIndex inputDevice;
- PaDeviceIndex outputDevice;
+ int sampleRate;
+ int framesPerBuffer;
+ int inputLatency;
+ int outputLatency;
+ int saveBadWaves;
+ int verbose;
+ int waveFileCount;
+ const char *waveFilePath;
+ PaDeviceIndex inputDevice;
+ PaDeviceIndex outputDevice;
} UserOptions;
#define BIG_BUFFER_SIZE (sizeof(float) * 2 * 2 * 1024)
/*******************************************************************/
static int RecordAndPlaySinesCallback( const void *inputBuffer, void *outputBuffer,
- unsigned long framesPerBuffer,
- const PaStreamCallbackTimeInfo* timeInfo,
- PaStreamCallbackFlags statusFlags,
- void *userData )
+ unsigned long framesPerBuffer,
+ const PaStreamCallbackTimeInfo* timeInfo,
+ PaStreamCallbackFlags statusFlags,
+ void *userData )
{
- int i;
- LoopbackContext *loopbackContext = (LoopbackContext *) userData;
-
-
- loopbackContext->callbackCount += 1;
- if( statusFlags & paInputUnderflow ) loopbackContext->inputUnderflowCount += 1;
- if( statusFlags & paInputOverflow ) loopbackContext->inputOverflowCount += 1;
- if( statusFlags & paOutputUnderflow ) loopbackContext->outputUnderflowCount += 1;
- if( statusFlags & paOutputOverflow ) loopbackContext->outputOverflowCount += 1;
- if( statusFlags & paPrimingOutput ) loopbackContext->primingCount += 1;
- if( framesPerBuffer > loopbackContext->maxFramesPerBuffer )
- {
- loopbackContext->maxFramesPerBuffer = framesPerBuffer;
- }
- if( framesPerBuffer < loopbackContext->minFramesPerBuffer )
- {
- loopbackContext->minFramesPerBuffer = framesPerBuffer;
- }
-
+ int i;
+ LoopbackContext *loopbackContext = (LoopbackContext *) userData;
+
+
+ loopbackContext->callbackCount += 1;
+ if( statusFlags & paInputUnderflow ) loopbackContext->inputUnderflowCount += 1;
+ if( statusFlags & paInputOverflow ) loopbackContext->inputOverflowCount += 1;
+ if( statusFlags & paOutputUnderflow ) loopbackContext->outputUnderflowCount += 1;
+ if( statusFlags & paOutputOverflow ) loopbackContext->outputOverflowCount += 1;
+ if( statusFlags & paPrimingOutput ) loopbackContext->primingCount += 1;
+ if( framesPerBuffer > loopbackContext->maxFramesPerBuffer )
+ {
+ loopbackContext->maxFramesPerBuffer = framesPerBuffer;
+ }
+ if( framesPerBuffer < loopbackContext->minFramesPerBuffer )
+ {
+ loopbackContext->minFramesPerBuffer = framesPerBuffer;
+ }
+
/* This may get called with NULL inputBuffer during initial setup.
- * We may also use the same callback with output only streams.
- */
- if( inputBuffer != NULL)
- {
- int channelsPerFrame = loopbackContext->test->inputParameters.channelCount;
- float *in = (float *)inputBuffer;
- PaSampleFormat inFormat = loopbackContext->test->inputParameters.sampleFormat;
-
- loopbackContext->inputBufferCount += 1;
-
- if( inFormat != paFloat32 )
- {
- int samplesToConvert = framesPerBuffer * channelsPerFrame;
- in = (float *) g_ConversionBuffer;
- if( samplesToConvert > MAX_CONVERSION_SAMPLES )
- {
- // Hack to prevent buffer overflow.
- // @todo Loop with small buffer instead of failing.
- printf("Format conversion buffer too small!\n");
- return paComplete;
- }
- PaQa_ConvertToFloat( inputBuffer, samplesToConvert, inFormat, (float *) g_ConversionBuffer );
- }
-
- // Read each channel from the buffer.
- for( i=0; i<channelsPerFrame; i++ )
- {
- loopbackContext->done |= PaQa_WriteRecording( &loopbackContext->recordings[i],
- in + i,
- framesPerBuffer,
- channelsPerFrame );
- }
- }
-
- if( outputBuffer != NULL )
- {
- int channelsPerFrame = loopbackContext->test->outputParameters.channelCount;
- float *out = (float *)outputBuffer;
- PaSampleFormat outFormat = loopbackContext->test->outputParameters.sampleFormat;
-
- loopbackContext->outputBufferCount += 1;
-
- if( outFormat != paFloat32 )
- {
- // If we need to convert then mix to the g_ConversionBuffer and then convert into the PA outputBuffer.
- out = (float *) g_ConversionBuffer;
- }
-
- PaQa_EraseBuffer( out, framesPerBuffer, channelsPerFrame );
- for( i=0; i<channelsPerFrame; i++ )
- {
- PaQa_MixSine( &loopbackContext->generators[i],
- out + i,
- framesPerBuffer,
- channelsPerFrame );
- }
-
- if( outFormat != paFloat32 )
- {
- int samplesToConvert = framesPerBuffer * channelsPerFrame;
- if( samplesToConvert > MAX_CONVERSION_SAMPLES )
- {
- printf("Format conversion buffer too small!\n");
- return paComplete;
- }
- PaQa_ConvertFromFloat( out, framesPerBuffer * channelsPerFrame, outFormat, outputBuffer );
- }
-
- }
-
+ * We may also use the same callback with output only streams.
+ */
+ if( inputBuffer != NULL)
+ {
+ int channelsPerFrame = loopbackContext->test->inputParameters.channelCount;
+ float *in = (float *)inputBuffer;
+ PaSampleFormat inFormat = loopbackContext->test->inputParameters.sampleFormat;
+
+ loopbackContext->inputBufferCount += 1;
+
+ if( inFormat != paFloat32 )
+ {
+ int samplesToConvert = framesPerBuffer * channelsPerFrame;
+ in = (float *) g_ConversionBuffer;
+ if( samplesToConvert > MAX_CONVERSION_SAMPLES )
+ {
+ // Hack to prevent buffer overflow.
+ // @todo Loop with small buffer instead of failing.
+ printf("Format conversion buffer too small!\n");
+ return paComplete;
+ }
+ PaQa_ConvertToFloat( inputBuffer, samplesToConvert, inFormat, (float *) g_ConversionBuffer );
+ }
+
+ // Read each channel from the buffer.
+ for( i=0; i<channelsPerFrame; i++ )
+ {
+ loopbackContext->done |= PaQa_WriteRecording( &loopbackContext->recordings[i],
+ in + i,
+ framesPerBuffer,
+ channelsPerFrame );
+ }
+ }
+
+ if( outputBuffer != NULL )
+ {
+ int channelsPerFrame = loopbackContext->test->outputParameters.channelCount;
+ float *out = (float *)outputBuffer;
+ PaSampleFormat outFormat = loopbackContext->test->outputParameters.sampleFormat;
+
+ loopbackContext->outputBufferCount += 1;
+
+ if( outFormat != paFloat32 )
+ {
+ // If we need to convert then mix to the g_ConversionBuffer and then convert into the PA outputBuffer.
+ out = (float *) g_ConversionBuffer;
+ }
+
+ PaQa_EraseBuffer( out, framesPerBuffer, channelsPerFrame );
+ for( i=0; i<channelsPerFrame; i++ )
+ {
+ PaQa_MixSine( &loopbackContext->generators[i],
+ out + i,
+ framesPerBuffer,
+ channelsPerFrame );
+ }
+
+ if( outFormat != paFloat32 )
+ {
+ int samplesToConvert = framesPerBuffer * channelsPerFrame;
+ if( samplesToConvert > MAX_CONVERSION_SAMPLES )
+ {
+ printf("Format conversion buffer too small!\n");
+ return paComplete;
+ }
+ PaQa_ConvertFromFloat( out, framesPerBuffer * channelsPerFrame, outFormat, outputBuffer );
+ }
+
+ }
+
// Measure whether the input or output are lagging behind.
// Don't measure lag at end.
if( !loopbackContext->done )
- {
+ {
int inputOutputDelta = loopbackContext->inputBufferCount - loopbackContext->outputBufferCount;
if( loopbackContext->maxInputOutputDelta < inputOutputDelta )
{
loopbackContext->minInputOutputDelta = inputOutputDelta;
}
}
-
- return loopbackContext->done ? paComplete : paContinue;
+
+ return loopbackContext->done ? paComplete : paContinue;
}
static void CopyStreamInfoToLoopbackContext( LoopbackContext *loopbackContext, PaStream *inputStream, PaStream *outputStream )
{
- const PaStreamInfo *inputStreamInfo = Pa_GetStreamInfo( inputStream );
- const PaStreamInfo *outputStreamInfo = Pa_GetStreamInfo( outputStream );
+ const PaStreamInfo *inputStreamInfo = Pa_GetStreamInfo( inputStream );
+ const PaStreamInfo *outputStreamInfo = Pa_GetStreamInfo( outputStream );
- loopbackContext->streamInfoInputLatency = inputStreamInfo ? inputStreamInfo->inputLatency : -1;
- loopbackContext->streamInfoOutputLatency = outputStreamInfo ? outputStreamInfo->outputLatency : -1;
+ loopbackContext->streamInfoInputLatency = inputStreamInfo ? inputStreamInfo->inputLatency : -1;
+ loopbackContext->streamInfoOutputLatency = outputStreamInfo ? outputStreamInfo->outputLatency : -1;
}
/*******************************************************************/
-/**
+/**
* Open a full duplex audio stream.
* Generate sine waves on the output channels and record the input channels.
* Then close the stream.
*/
int PaQa_RunLoopbackFullDuplex( LoopbackContext *loopbackContext )
{
- PaStream *stream = NULL;
- PaError err = 0;
- TestParameters *test = loopbackContext->test;
- loopbackContext->done = 0;
- // Use one full duplex stream.
- err = Pa_OpenStream(
- &stream,
- &test->inputParameters,
- &test->outputParameters,
- test->sampleRate,
- test->framesPerBuffer,
- paClipOff, /* we won't output out of range samples so don't bother clipping them */
- RecordAndPlaySinesCallback,
- loopbackContext );
- if( err != paNoError ) goto error;
-
- CopyStreamInfoToLoopbackContext( loopbackContext, stream, stream );
-
- err = Pa_StartStream( stream );
- if( err != paNoError ) goto error;
-
- // Wait for stream to finish.
- while( loopbackContext->done == 0 )
- {
- Pa_Sleep(PAQA_WAIT_STREAM_MSEC);
- }
-
- err = Pa_StopStream( stream );
- if( err != paNoError ) goto error;
-
- err = Pa_CloseStream( stream );
- if( err != paNoError ) goto error;
-
- return 0;
-
+ PaStream *stream = NULL;
+ PaError err = 0;
+ TestParameters *test = loopbackContext->test;
+ loopbackContext->done = 0;
+ // Use one full duplex stream.
+ err = Pa_OpenStream(
+ &stream,
+ &test->inputParameters,
+ &test->outputParameters,
+ test->sampleRate,
+ test->framesPerBuffer,
+ paClipOff, /* we won't output out of range samples so don't bother clipping them */
+ RecordAndPlaySinesCallback,
+ loopbackContext );
+ if( err != paNoError ) goto error;
+
+ CopyStreamInfoToLoopbackContext( loopbackContext, stream, stream );
+
+ err = Pa_StartStream( stream );
+ if( err != paNoError ) goto error;
+
+ // Wait for stream to finish.
+ while( loopbackContext->done == 0 )
+ {
+ Pa_Sleep(PAQA_WAIT_STREAM_MSEC);
+ }
+
+ err = Pa_StopStream( stream );
+ if( err != paNoError ) goto error;
+
+ err = Pa_CloseStream( stream );
+ if( err != paNoError ) goto error;
+
+ return 0;
+
error:
- return err;
+ return err;
}
/*******************************************************************/
-/**
+/**
* Open two audio streams, one for input and one for output.
* Generate sine waves on the output channels and record the input channels.
* Then close the stream.
int PaQa_WaitForStream( LoopbackContext *loopbackContext )
{
- int timeoutMSec = 1000 * PAQA_TEST_DURATION * 2;
-
- // Wait for stream to finish or timeout.
- while( (loopbackContext->done == 0) && (timeoutMSec > 0) )
- {
- Pa_Sleep(PAQA_WAIT_STREAM_MSEC);
- timeoutMSec -= PAQA_WAIT_STREAM_MSEC;
- }
-
- if( loopbackContext->done == 0 )
- {
- printf("ERROR - stream completion timed out!");
- return paTimedOut;
- }
- return 0;
+ int timeoutMSec = 1000 * PAQA_TEST_DURATION * 2;
+
+ // Wait for stream to finish or timeout.
+ while( (loopbackContext->done == 0) && (timeoutMSec > 0) )
+ {
+ Pa_Sleep(PAQA_WAIT_STREAM_MSEC);
+ timeoutMSec -= PAQA_WAIT_STREAM_MSEC;
+ }
+
+ if( loopbackContext->done == 0 )
+ {
+ printf("ERROR - stream completion timed out!");
+ return paTimedOut;
+ }
+ return 0;
}
/*******************************************************************/
-/**
+/**
* Open two audio streams, one for input and one for output.
* Generate sine waves on the output channels and record the input channels.
* Then close the stream.
*/
int PaQa_RunLoopbackHalfDuplex( LoopbackContext *loopbackContext )
{
- PaStream *inStream = NULL;
- PaStream *outStream = NULL;
- PaError err = 0;
- int timedOut = 0;
- TestParameters *test = loopbackContext->test;
- loopbackContext->done = 0;
-
- // Use two half duplex streams.
- err = Pa_OpenStream(
- &inStream,
- &test->inputParameters,
- NULL,
- test->sampleRate,
- test->framesPerBuffer,
- test->streamFlags,
- RecordAndPlaySinesCallback,
- loopbackContext );
- if( err != paNoError ) goto error;
- err = Pa_OpenStream(
- &outStream,
- NULL,
- &test->outputParameters,
- test->sampleRate,
- test->framesPerBuffer,
- test->streamFlags,
- RecordAndPlaySinesCallback,
- loopbackContext );
- if( err != paNoError ) goto error;
-
- CopyStreamInfoToLoopbackContext( loopbackContext, inStream, outStream );
-
- err = Pa_StartStream( inStream );
- if( err != paNoError ) goto error;
-
- // Start output later so we catch the beginning of the waveform.
- err = Pa_StartStream( outStream );
- if( err != paNoError ) goto error;
-
- timedOut = PaQa_WaitForStream( loopbackContext );
-
- err = Pa_StopStream( inStream );
- if( err != paNoError ) goto error;
-
- err = Pa_StopStream( outStream );
- if( err != paNoError ) goto error;
-
- err = Pa_CloseStream( inStream );
- if( err != paNoError ) goto error;
-
- err = Pa_CloseStream( outStream );
- if( err != paNoError ) goto error;
-
- return timedOut;
-
+ PaStream *inStream = NULL;
+ PaStream *outStream = NULL;
+ PaError err = 0;
+ int timedOut = 0;
+ TestParameters *test = loopbackContext->test;
+ loopbackContext->done = 0;
+
+ // Use two half duplex streams.
+ err = Pa_OpenStream(
+ &inStream,
+ &test->inputParameters,
+ NULL,
+ test->sampleRate,
+ test->framesPerBuffer,
+ test->streamFlags,
+ RecordAndPlaySinesCallback,
+ loopbackContext );
+ if( err != paNoError ) goto error;
+ err = Pa_OpenStream(
+ &outStream,
+ NULL,
+ &test->outputParameters,
+ test->sampleRate,
+ test->framesPerBuffer,
+ test->streamFlags,
+ RecordAndPlaySinesCallback,
+ loopbackContext );
+ if( err != paNoError ) goto error;
+
+ CopyStreamInfoToLoopbackContext( loopbackContext, inStream, outStream );
+
+ err = Pa_StartStream( inStream );
+ if( err != paNoError ) goto error;
+
+ // Start output later so we catch the beginning of the waveform.
+ err = Pa_StartStream( outStream );
+ if( err != paNoError ) goto error;
+
+ timedOut = PaQa_WaitForStream( loopbackContext );
+
+ err = Pa_StopStream( inStream );
+ if( err != paNoError ) goto error;
+
+ err = Pa_StopStream( outStream );
+ if( err != paNoError ) goto error;
+
+ err = Pa_CloseStream( inStream );
+ if( err != paNoError ) goto error;
+
+ err = Pa_CloseStream( outStream );
+ if( err != paNoError ) goto error;
+
+ return timedOut;
+
error:
- return err;
+ return err;
}
/*******************************************************************/
-/**
+/**
* Open one audio streams, just for input.
* Record background level.
* Then close the stream.
*/
int PaQa_RunInputOnly( LoopbackContext *loopbackContext )
{
- PaStream *inStream = NULL;
- PaError err = 0;
- int timedOut = 0;
- TestParameters *test = loopbackContext->test;
- loopbackContext->done = 0;
-
- // Just open an input stream.
- err = Pa_OpenStream(
- &inStream,
- &test->inputParameters,
- NULL,
- test->sampleRate,
- test->framesPerBuffer,
- paClipOff, /* We won't output out of range samples so don't bother clipping them. */
- RecordAndPlaySinesCallback,
- loopbackContext );
- if( err != paNoError ) goto error;
-
- err = Pa_StartStream( inStream );
- if( err != paNoError ) goto error;
-
- timedOut = PaQa_WaitForStream( loopbackContext );
-
- err = Pa_StopStream( inStream );
- if( err != paNoError ) goto error;
-
- err = Pa_CloseStream( inStream );
- if( err != paNoError ) goto error;
-
- return timedOut;
-
+ PaStream *inStream = NULL;
+ PaError err = 0;
+ int timedOut = 0;
+ TestParameters *test = loopbackContext->test;
+ loopbackContext->done = 0;
+
+ // Just open an input stream.
+ err = Pa_OpenStream(
+ &inStream,
+ &test->inputParameters,
+ NULL,
+ test->sampleRate,
+ test->framesPerBuffer,
+ paClipOff, /* We won't output out of range samples so don't bother clipping them. */
+ RecordAndPlaySinesCallback,
+ loopbackContext );
+ if( err != paNoError ) goto error;
+
+ err = Pa_StartStream( inStream );
+ if( err != paNoError ) goto error;
+
+ timedOut = PaQa_WaitForStream( loopbackContext );
+
+ err = Pa_StopStream( inStream );
+ if( err != paNoError ) goto error;
+
+ err = Pa_CloseStream( inStream );
+ if( err != paNoError ) goto error;
+
+ return timedOut;
+
error:
- return err;
+ return err;
}
/*******************************************************************/
static int RecordAndPlayBlockingIO( PaStream *inStream,
- PaStream *outStream,
- LoopbackContext *loopbackContext
- )
-{
- int i;
- float *in = (float *)g_ReadWriteBuffer;
- float *out = (float *)g_ReadWriteBuffer;
- PaError err;
- int done = 0;
- long available;
- const long maxPerBuffer = 64;
- TestParameters *test = loopbackContext->test;
- long framesPerBuffer = test->framesPerBuffer;
- if( framesPerBuffer <= 0 )
- {
- framesPerBuffer = maxPerBuffer; // bigger values might run past end of recording
- }
-
- // Read in audio.
- err = Pa_ReadStream( inStream, in, framesPerBuffer );
- // Ignore an overflow on the first read.
- //if( !((loopbackContext->callbackCount == 0) && (err == paInputOverflowed)) )
- if( err != paInputOverflowed )
- {
- QA_ASSERT_EQUALS( "Pa_ReadStream failed", paNoError, err );
- }
- else
- {
- loopbackContext->inputOverflowCount += 1;
- }
-
-
- // Save in a recording.
- for( i=0; i<loopbackContext->test->inputParameters.channelCount; i++ )
- {
- done |= PaQa_WriteRecording( &loopbackContext->recordings[i],
- in + i,
- framesPerBuffer,
- loopbackContext->test->inputParameters.channelCount );
- }
-
- // Synthesize audio.
- available = Pa_GetStreamWriteAvailable( outStream );
- if( available > (2*framesPerBuffer) ) available = (2*framesPerBuffer);
- PaQa_EraseBuffer( out, available, loopbackContext->test->outputParameters.channelCount );
- for( i=0; i<loopbackContext->test->outputParameters.channelCount; i++ )
- {
- PaQa_MixSine( &loopbackContext->generators[i],
- out + i,
- available,
- loopbackContext->test->outputParameters.channelCount );
- }
-
- // Write out audio.
- err = Pa_WriteStream( outStream, out, available );
- // Ignore an underflow on the first write.
- //if( !((loopbackContext->callbackCount == 0) && (err == paOutputUnderflowed)) )
- if( err != paOutputUnderflowed )
- {
- QA_ASSERT_EQUALS( "Pa_WriteStream failed", paNoError, err );
- }
- else
- {
- loopbackContext->outputUnderflowCount += 1;
- }
-
-
- loopbackContext->callbackCount += 1;
-
- return done;
+ PaStream *outStream,
+ LoopbackContext *loopbackContext
+ )
+{
+ int i;
+ float *in = (float *)g_ReadWriteBuffer;
+ float *out = (float *)g_ReadWriteBuffer;
+ PaError err;
+ int done = 0;
+ long available;
+ const long maxPerBuffer = 64;
+ TestParameters *test = loopbackContext->test;
+ long framesPerBuffer = test->framesPerBuffer;
+ if( framesPerBuffer <= 0 )
+ {
+ framesPerBuffer = maxPerBuffer; // bigger values might run past end of recording
+ }
+
+ // Read in audio.
+ err = Pa_ReadStream( inStream, in, framesPerBuffer );
+ // Ignore an overflow on the first read.
+ //if( !((loopbackContext->callbackCount == 0) && (err == paInputOverflowed)) )
+ if( err != paInputOverflowed )
+ {
+ QA_ASSERT_EQUALS( "Pa_ReadStream failed", paNoError, err );
+ }
+ else
+ {
+ loopbackContext->inputOverflowCount += 1;
+ }
+
+
+ // Save in a recording.
+ for( i=0; i<loopbackContext->test->inputParameters.channelCount; i++ )
+ {
+ done |= PaQa_WriteRecording( &loopbackContext->recordings[i],
+ in + i,
+ framesPerBuffer,
+ loopbackContext->test->inputParameters.channelCount );
+ }
+
+ // Synthesize audio.
+ available = Pa_GetStreamWriteAvailable( outStream );
+ if( available > (2*framesPerBuffer) ) available = (2*framesPerBuffer);
+ PaQa_EraseBuffer( out, available, loopbackContext->test->outputParameters.channelCount );
+ for( i=0; i<loopbackContext->test->outputParameters.channelCount; i++ )
+ {
+ PaQa_MixSine( &loopbackContext->generators[i],
+ out + i,
+ available,
+ loopbackContext->test->outputParameters.channelCount );
+ }
+
+ // Write out audio.
+ err = Pa_WriteStream( outStream, out, available );
+ // Ignore an underflow on the first write.
+ //if( !((loopbackContext->callbackCount == 0) && (err == paOutputUnderflowed)) )
+ if( err != paOutputUnderflowed )
+ {
+ QA_ASSERT_EQUALS( "Pa_WriteStream failed", paNoError, err );
+ }
+ else
+ {
+ loopbackContext->outputUnderflowCount += 1;
+ }
+
+
+ loopbackContext->callbackCount += 1;
+
+ return done;
error:
- return err;
+ return err;
}
/*******************************************************************/
-/**
+/**
* Open two audio streams with non-blocking IO.
* Generate sine waves on the output channels and record the input channels.
* Then close the stream.
*/
int PaQa_RunLoopbackHalfDuplexBlockingIO( LoopbackContext *loopbackContext )
{
- PaStream *inStream = NULL;
- PaStream *outStream = NULL;
- PaError err = 0;
- TestParameters *test = loopbackContext->test;
-
- // Use two half duplex streams.
- err = Pa_OpenStream(
- &inStream,
- &test->inputParameters,
- NULL,
- test->sampleRate,
- test->framesPerBuffer,
- paClipOff, /* we won't output out of range samples so don't bother clipping them */
- NULL, // causes non-blocking IO
- NULL );
- if( err != paNoError ) goto error1;
- err = Pa_OpenStream(
- &outStream,
- NULL,
- &test->outputParameters,
- test->sampleRate,
- test->framesPerBuffer,
- paClipOff, /* we won't output out of range samples so don't bother clipping them */
- NULL, // causes non-blocking IO
- NULL );
- if( err != paNoError ) goto error2;
-
- CopyStreamInfoToLoopbackContext( loopbackContext, inStream, outStream );
-
- err = Pa_StartStream( outStream );
- if( err != paNoError ) goto error3;
-
- err = Pa_StartStream( inStream );
- if( err != paNoError ) goto error3;
-
- while( err == 0 )
- {
- err = RecordAndPlayBlockingIO( inStream, outStream, loopbackContext );
- if( err < 0 ) goto error3;
- }
-
- err = Pa_StopStream( inStream );
- if( err != paNoError ) goto error3;
-
- err = Pa_StopStream( outStream );
- if( err != paNoError ) goto error3;
-
- err = Pa_CloseStream( outStream );
- if( err != paNoError ) goto error2;
-
- err = Pa_CloseStream( inStream );
- if( err != paNoError ) goto error1;
-
-
- return 0;
-
+ PaStream *inStream = NULL;
+ PaStream *outStream = NULL;
+ PaError err = 0;
+ TestParameters *test = loopbackContext->test;
+
+ // Use two half duplex streams.
+ err = Pa_OpenStream(
+ &inStream,
+ &test->inputParameters,
+ NULL,
+ test->sampleRate,
+ test->framesPerBuffer,
+ paClipOff, /* we won't output out of range samples so don't bother clipping them */
+ NULL, // causes non-blocking IO
+ NULL );
+ if( err != paNoError ) goto error1;
+ err = Pa_OpenStream(
+ &outStream,
+ NULL,
+ &test->outputParameters,
+ test->sampleRate,
+ test->framesPerBuffer,
+ paClipOff, /* we won't output out of range samples so don't bother clipping them */
+ NULL, // causes non-blocking IO
+ NULL );
+ if( err != paNoError ) goto error2;
+
+ CopyStreamInfoToLoopbackContext( loopbackContext, inStream, outStream );
+
+ err = Pa_StartStream( outStream );
+ if( err != paNoError ) goto error3;
+
+ err = Pa_StartStream( inStream );
+ if( err != paNoError ) goto error3;
+
+ while( err == 0 )
+ {
+ err = RecordAndPlayBlockingIO( inStream, outStream, loopbackContext );
+ if( err < 0 ) goto error3;
+ }
+
+ err = Pa_StopStream( inStream );
+ if( err != paNoError ) goto error3;
+
+ err = Pa_StopStream( outStream );
+ if( err != paNoError ) goto error3;
+
+ err = Pa_CloseStream( outStream );
+ if( err != paNoError ) goto error2;
+
+ err = Pa_CloseStream( inStream );
+ if( err != paNoError ) goto error1;
+
+
+ return 0;
+
error3:
- Pa_CloseStream( outStream );
+ Pa_CloseStream( outStream );
error2:
- Pa_CloseStream( inStream );
+ Pa_CloseStream( inStream );
error1:
- return err;
+ return err;
}
/*******************************************************************/
-/**
+/**
* Open one audio stream with non-blocking IO.
* Generate sine waves on the output channels and record the input channels.
* Then close the stream.
*/
int PaQa_RunLoopbackFullDuplexBlockingIO( LoopbackContext *loopbackContext )
{
- PaStream *stream = NULL;
- PaError err = 0;
- TestParameters *test = loopbackContext->test;
-
- // Use one full duplex stream.
- err = Pa_OpenStream(
- &stream,
- &test->inputParameters,
- &test->outputParameters,
- test->sampleRate,
- test->framesPerBuffer,
- paClipOff, /* we won't output out of range samples so don't bother clipping them */
- NULL, // causes non-blocking IO
- NULL );
- if( err != paNoError ) goto error1;
-
- CopyStreamInfoToLoopbackContext( loopbackContext, stream, stream );
-
- err = Pa_StartStream( stream );
- if( err != paNoError ) goto error2;
-
- while( err == 0 )
- {
- err = RecordAndPlayBlockingIO( stream, stream, loopbackContext );
- if( err < 0 ) goto error2;
- }
-
- err = Pa_StopStream( stream );
- if( err != paNoError ) goto error2;
-
-
- err = Pa_CloseStream( stream );
- if( err != paNoError ) goto error1;
-
-
- return 0;
-
+ PaStream *stream = NULL;
+ PaError err = 0;
+ TestParameters *test = loopbackContext->test;
+
+ // Use one full duplex stream.
+ err = Pa_OpenStream(
+ &stream,
+ &test->inputParameters,
+ &test->outputParameters,
+ test->sampleRate,
+ test->framesPerBuffer,
+ paClipOff, /* we won't output out of range samples so don't bother clipping them */
+ NULL, // causes non-blocking IO
+ NULL );
+ if( err != paNoError ) goto error1;
+
+ CopyStreamInfoToLoopbackContext( loopbackContext, stream, stream );
+
+ err = Pa_StartStream( stream );
+ if( err != paNoError ) goto error2;
+
+ while( err == 0 )
+ {
+ err = RecordAndPlayBlockingIO( stream, stream, loopbackContext );
+ if( err < 0 ) goto error2;
+ }
+
+ err = Pa_StopStream( stream );
+ if( err != paNoError ) goto error2;
+
+
+ err = Pa_CloseStream( stream );
+ if( err != paNoError ) goto error1;
+
+
+ return 0;
+
error2:
- Pa_CloseStream( stream );
+ Pa_CloseStream( stream );
error1:
- return err;
+ return err;
}
/*******************************************************************/
-/**
+/**
* Run some kind of loopback test.
* @return 0 if OK or negative error.
*/
int PaQa_RunLoopback( LoopbackContext *loopbackContext )
{
- PaError err = 0;
- TestParameters *test = loopbackContext->test;
-
-
- if( test->flags & PAQA_FLAG_TWO_STREAMS )
- {
- if( test->flags & PAQA_FLAG_USE_BLOCKING_IO )
- {
- err = PaQa_RunLoopbackHalfDuplexBlockingIO( loopbackContext );
- }
- else
- {
- err = PaQa_RunLoopbackHalfDuplex( loopbackContext );
- }
- }
- else
- {
- if( test->flags & PAQA_FLAG_USE_BLOCKING_IO )
- {
- err = PaQa_RunLoopbackFullDuplexBlockingIO( loopbackContext );
- }
- else
- {
- err = PaQa_RunLoopbackFullDuplex( loopbackContext );
- }
- }
-
- if( err != paNoError )
- {
- printf("PortAudio error = %s\n", Pa_GetErrorText( err ) );
- }
- return err;
+ PaError err = 0;
+ TestParameters *test = loopbackContext->test;
+
+
+ if( test->flags & PAQA_FLAG_TWO_STREAMS )
+ {
+ if( test->flags & PAQA_FLAG_USE_BLOCKING_IO )
+ {
+ err = PaQa_RunLoopbackHalfDuplexBlockingIO( loopbackContext );
+ }
+ else
+ {
+ err = PaQa_RunLoopbackHalfDuplex( loopbackContext );
+ }
+ }
+ else
+ {
+ if( test->flags & PAQA_FLAG_USE_BLOCKING_IO )
+ {
+ err = PaQa_RunLoopbackFullDuplexBlockingIO( loopbackContext );
+ }
+ else
+ {
+ err = PaQa_RunLoopbackFullDuplex( loopbackContext );
+ }
+ }
+
+ if( err != paNoError )
+ {
+ printf("PortAudio error = %s\n", Pa_GetErrorText( err ) );
+ }
+ return err;
}
/*******************************************************************/
static int PaQa_SaveTestResultToWaveFile( UserOptions *userOptions, PaQaRecording *recording )
{
- if( userOptions->saveBadWaves )
- {
- char filename[256];
+ if( userOptions->saveBadWaves )
+ {
+ char filename[256];
#ifdef WIN32
_snprintf( filename, sizeof(filename), "%s\\paloopback_%d.wav", userOptions->waveFilePath, userOptions->waveFileCount++ );
#else
- snprintf( filename, sizeof(filename), "%s/paloopback_%d.wav", userOptions->waveFilePath, userOptions->waveFileCount++ );
-#endif
- printf( "\"%s\", ", filename );
- return PaQa_SaveRecordingToWaveFile( recording, filename );
- }
- return 0;
+ snprintf( filename, sizeof(filename), "%s/paloopback_%d.wav", userOptions->waveFilePath, userOptions->waveFileCount++ );
+#endif
+ printf( "\"%s\", ", filename );
+ return PaQa_SaveRecordingToWaveFile( recording, filename );
+ }
+ return 0;
}
/*******************************************************************/
static int PaQa_SetupLoopbackContext( LoopbackContext *loopbackContextPtr, TestParameters *testParams )
{
- int i;
- // Setup loopback context.
- memset( loopbackContextPtr, 0, sizeof(LoopbackContext) );
- loopbackContextPtr->test = testParams;
- for( i=0; i<testParams->samplesPerFrame; i++ )
- {
- int err = PaQa_InitializeRecording( &loopbackContextPtr->recordings[i], testParams->maxFrames, testParams->sampleRate );
- QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", paNoError, err );
- }
- for( i=0; i<testParams->samplesPerFrame; i++ )
- {
- PaQa_SetupSineGenerator( &loopbackContextPtr->generators[i], PaQa_GetNthFrequency( testParams->baseFrequency, i ),
- testParams->amplitude, testParams->sampleRate );
- }
- loopbackContextPtr->minFramesPerBuffer = 0x0FFFFFFF;
- return 0;
+ int i;
+ // Setup loopback context.
+ memset( loopbackContextPtr, 0, sizeof(LoopbackContext) );
+ loopbackContextPtr->test = testParams;
+ for( i=0; i<testParams->samplesPerFrame; i++ )
+ {
+ int err = PaQa_InitializeRecording( &loopbackContextPtr->recordings[i], testParams->maxFrames, testParams->sampleRate );
+ QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", paNoError, err );
+ }
+ for( i=0; i<testParams->samplesPerFrame; i++ )
+ {
+ PaQa_SetupSineGenerator( &loopbackContextPtr->generators[i], PaQa_GetNthFrequency( testParams->baseFrequency, i ),
+ testParams->amplitude, testParams->sampleRate );
+ }
+ loopbackContextPtr->minFramesPerBuffer = 0x0FFFFFFF;
+ return 0;
error:
- return -1;
+ return -1;
}
/*******************************************************************/
static void PaQa_TeardownLoopbackContext( LoopbackContext *loopbackContextPtr )
{
- int i;
- if( loopbackContextPtr->test != NULL )
- {
- for( i=0; i<loopbackContextPtr->test->samplesPerFrame; i++ )
- {
- PaQa_TerminateRecording( &loopbackContextPtr->recordings[i] );
- }
- }
+ int i;
+ if( loopbackContextPtr->test != NULL )
+ {
+ for( i=0; i<loopbackContextPtr->test->samplesPerFrame; i++ )
+ {
+ PaQa_TerminateRecording( &loopbackContextPtr->recordings[i] );
+ }
+ }
}
/*******************************************************************/
static void PaQa_PrintShortErrorReport( PaQaAnalysisResult *analysisResultPtr, int channel )
{
- printf("channel %d ", channel);
- if( analysisResultPtr->popPosition > 0 )
- {
- printf("POP %0.3f at %d, ", (double)analysisResultPtr->popAmplitude, (int)analysisResultPtr->popPosition );
- }
- else
- {
- if( analysisResultPtr->addedFramesPosition > 0 )
- {
- printf("ADD %d at %d ", (int)analysisResultPtr->numAddedFrames, (int)analysisResultPtr->addedFramesPosition );
- }
-
- if( analysisResultPtr->droppedFramesPosition > 0 )
- {
- printf("DROP %d at %d ", (int)analysisResultPtr->numDroppedFrames, (int)analysisResultPtr->droppedFramesPosition );
- }
- }
+ printf("channel %d ", channel);
+ if( analysisResultPtr->popPosition > 0 )
+ {
+ printf("POP %0.3f at %d, ", (double)analysisResultPtr->popAmplitude, (int)analysisResultPtr->popPosition );
+ }
+ else
+ {
+ if( analysisResultPtr->addedFramesPosition > 0 )
+ {
+ printf("ADD %d at %d ", (int)analysisResultPtr->numAddedFrames, (int)analysisResultPtr->addedFramesPosition );
+ }
+
+ if( analysisResultPtr->droppedFramesPosition > 0 )
+ {
+ printf("DROP %d at %d ", (int)analysisResultPtr->numDroppedFrames, (int)analysisResultPtr->droppedFramesPosition );
+ }
+ }
}
/*******************************************************************/
static void PaQa_PrintFullErrorReport( PaQaAnalysisResult *analysisResultPtr, int channel )
{
- printf("\n=== Loopback Analysis ===================\n");
- printf(" channel: %d\n", channel );
- printf(" latency: %10.3f\n", analysisResultPtr->latency );
- printf(" amplitudeRatio: %10.3f\n", (double)analysisResultPtr->amplitudeRatio );
- printf(" popPosition: %10.3f\n", (double)analysisResultPtr->popPosition );
- printf(" popAmplitude: %10.3f\n", (double)analysisResultPtr->popAmplitude );
- printf(" num added frames: %10.3f\n", analysisResultPtr->numAddedFrames );
- printf(" added frames at: %10.3f\n", analysisResultPtr->addedFramesPosition );
- printf(" num dropped frames: %10.3f\n", analysisResultPtr->numDroppedFrames );
- printf(" dropped frames at: %10.3f\n", analysisResultPtr->droppedFramesPosition );
+ printf("\n=== Loopback Analysis ===================\n");
+ printf(" channel: %d\n", channel );
+ printf(" latency: %10.3f\n", analysisResultPtr->latency );
+ printf(" amplitudeRatio: %10.3f\n", (double)analysisResultPtr->amplitudeRatio );
+ printf(" popPosition: %10.3f\n", (double)analysisResultPtr->popPosition );
+ printf(" popAmplitude: %10.3f\n", (double)analysisResultPtr->popAmplitude );
+ printf(" num added frames: %10.3f\n", analysisResultPtr->numAddedFrames );
+ printf(" added frames at: %10.3f\n", analysisResultPtr->addedFramesPosition );
+ printf(" num dropped frames: %10.3f\n", analysisResultPtr->numDroppedFrames );
+ printf(" dropped frames at: %10.3f\n", analysisResultPtr->droppedFramesPosition );
}
/*******************************************************************/
-/**
+/**
* Test loopback connection using the given parameters.
* @return number of channels with glitches, or negative error.
*/
static int PaQa_SingleLoopBackTest( UserOptions *userOptions, TestParameters *testParams )
{
- int i;
- LoopbackContext loopbackContext;
- PaError err = paNoError;
- PaQaTestTone testTone;
- PaQaAnalysisResult analysisResult;
- int numBadChannels = 0;
-
- printf("| %5d | %6d | ", ((int)(testParams->sampleRate+0.5)), testParams->framesPerBuffer );
- fflush(stdout);
-
- testTone.samplesPerFrame = testParams->samplesPerFrame;
- testTone.sampleRate = testParams->sampleRate;
- testTone.amplitude = testParams->amplitude;
- testTone.startDelay = 0;
-
- err = PaQa_SetupLoopbackContext( &loopbackContext, testParams );
- if( err ) return err;
-
- err = PaQa_RunLoopback( &loopbackContext );
- QA_ASSERT_TRUE("loopback did not run", (loopbackContext.callbackCount > 1) );
-
- printf( "%7.2f %7.2f %7.2f | ",
- loopbackContext.streamInfoInputLatency * 1000.0,
- loopbackContext.streamInfoOutputLatency * 1000.0,
- (loopbackContext.streamInfoInputLatency + loopbackContext.streamInfoOutputLatency) * 1000.0
- );
-
- printf( "%4d/%4d/%4d, %4d/%4d/%4d | ",
- loopbackContext.inputOverflowCount,
- loopbackContext.inputUnderflowCount,
- loopbackContext.inputBufferCount,
- loopbackContext.outputOverflowCount,
- loopbackContext.outputUnderflowCount,
- loopbackContext.outputBufferCount
- );
-
- // Analyse recording to detect glitches.
- for( i=0; i<testParams->samplesPerFrame; i++ )
- {
- double freq = PaQa_GetNthFrequency( testParams->baseFrequency, i );
- testTone.frequency = freq;
-
- PaQa_AnalyseRecording( &loopbackContext.recordings[i], &testTone, &analysisResult );
-
- if( i==0 )
- {
+ int i;
+ LoopbackContext loopbackContext;
+ PaError err = paNoError;
+ PaQaTestTone testTone;
+ PaQaAnalysisResult analysisResult;
+ int numBadChannels = 0;
+
+ printf("| %5d | %6d | ", ((int)(testParams->sampleRate+0.5)), testParams->framesPerBuffer );
+ fflush(stdout);
+
+ testTone.samplesPerFrame = testParams->samplesPerFrame;
+ testTone.sampleRate = testParams->sampleRate;
+ testTone.amplitude = testParams->amplitude;
+ testTone.startDelay = 0;
+
+ err = PaQa_SetupLoopbackContext( &loopbackContext, testParams );
+ if( err ) return err;
+
+ err = PaQa_RunLoopback( &loopbackContext );
+ QA_ASSERT_TRUE("loopback did not run", (loopbackContext.callbackCount > 1) );
+
+ printf( "%7.2f %7.2f %7.2f | ",
+ loopbackContext.streamInfoInputLatency * 1000.0,
+ loopbackContext.streamInfoOutputLatency * 1000.0,
+ (loopbackContext.streamInfoInputLatency + loopbackContext.streamInfoOutputLatency) * 1000.0
+ );
+
+ printf( "%4d/%4d/%4d, %4d/%4d/%4d | ",
+ loopbackContext.inputOverflowCount,
+ loopbackContext.inputUnderflowCount,
+ loopbackContext.inputBufferCount,
+ loopbackContext.outputOverflowCount,
+ loopbackContext.outputUnderflowCount,
+ loopbackContext.outputBufferCount
+ );
+
+ // Analyse recording to detect glitches.
+ for( i=0; i<testParams->samplesPerFrame; i++ )
+ {
+ double freq = PaQa_GetNthFrequency( testParams->baseFrequency, i );
+ testTone.frequency = freq;
+
+ PaQa_AnalyseRecording( &loopbackContext.recordings[i], &testTone, &analysisResult );
+
+ if( i==0 )
+ {
double latencyMSec;
- printf( "%4d-%4d | ",
- loopbackContext.minFramesPerBuffer,
- loopbackContext.maxFramesPerBuffer
- );
-
- latencyMSec = 1000.0 * analysisResult.latency / testParams->sampleRate;
- printf("%7.2f | ", latencyMSec );
-
- }
-
- if( analysisResult.valid )
- {
- int badChannel = ( (analysisResult.popPosition > 0)
- || (analysisResult.addedFramesPosition > 0)
- || (analysisResult.droppedFramesPosition > 0) );
-
- if( badChannel )
- {
- if( userOptions->verbose )
- {
- PaQa_PrintFullErrorReport( &analysisResult, i );
- }
- else
- {
- PaQa_PrintShortErrorReport( &analysisResult, i );
- }
- PaQa_SaveTestResultToWaveFile( userOptions, &loopbackContext.recordings[i] );
- }
- numBadChannels += badChannel;
- }
- else
- {
- printf( "[%d] No or low signal, ampRatio = %f", i, analysisResult.amplitudeRatio );
- numBadChannels += 1;
- }
-
- }
- if( numBadChannels == 0 )
- {
- printf( "OK" );
- }
+ printf( "%4d-%4d | ",
+ loopbackContext.minFramesPerBuffer,
+ loopbackContext.maxFramesPerBuffer
+ );
+
+ latencyMSec = 1000.0 * analysisResult.latency / testParams->sampleRate;
+ printf("%7.2f | ", latencyMSec );
+
+ }
+
+ if( analysisResult.valid )
+ {
+ int badChannel = ( (analysisResult.popPosition > 0)
+ || (analysisResult.addedFramesPosition > 0)
+ || (analysisResult.droppedFramesPosition > 0) );
+
+ if( badChannel )
+ {
+ if( userOptions->verbose )
+ {
+ PaQa_PrintFullErrorReport( &analysisResult, i );
+ }
+ else
+ {
+ PaQa_PrintShortErrorReport( &analysisResult, i );
+ }
+ PaQa_SaveTestResultToWaveFile( userOptions, &loopbackContext.recordings[i] );
+ }
+ numBadChannels += badChannel;
+ }
+ else
+ {
+ printf( "[%d] No or low signal, ampRatio = %f", i, analysisResult.amplitudeRatio );
+ numBadChannels += 1;
+ }
+
+ }
+ if( numBadChannels == 0 )
+ {
+ printf( "OK" );
+ }
// Print the # errors so far to make it easier to see where the error occurred.
- printf( " - #errs = %d\n", g_testsFailed );
-
- PaQa_TeardownLoopbackContext( &loopbackContext );
- if( numBadChannels > 0 )
- {
- g_testsFailed += 1;
- }
- return numBadChannels;
-
+ printf( " - #errs = %d\n", g_testsFailed );
+
+ PaQa_TeardownLoopbackContext( &loopbackContext );
+ if( numBadChannels > 0 )
+ {
+ g_testsFailed += 1;
+ }
+ return numBadChannels;
+
error:
- PaQa_TeardownLoopbackContext( &loopbackContext );
- printf( "\n" );
- g_testsFailed += 1;
- return err;
+ PaQa_TeardownLoopbackContext( &loopbackContext );
+ printf( "\n" );
+ g_testsFailed += 1;
+ return err;
}
/*******************************************************************/
static void PaQa_SetDefaultTestParameters( TestParameters *testParamsPtr, PaDeviceIndex inputDevice, PaDeviceIndex outputDevice )
{
- memset( testParamsPtr, 0, sizeof(TestParameters) );
-
- testParamsPtr->samplesPerFrame = 2;
- testParamsPtr->amplitude = 0.5;
- testParamsPtr->sampleRate = 44100;
- testParamsPtr->maxFrames = (int) (PAQA_TEST_DURATION * testParamsPtr->sampleRate);
- testParamsPtr->framesPerBuffer = DEFAULT_FRAMES_PER_BUFFER;
- testParamsPtr->baseFrequency = 200.0;
- testParamsPtr->flags = PAQA_FLAG_TWO_STREAMS;
+ memset( testParamsPtr, 0, sizeof(TestParameters) );
+
+ testParamsPtr->samplesPerFrame = 2;
+ testParamsPtr->amplitude = 0.5;
+ testParamsPtr->sampleRate = 44100;
+ testParamsPtr->maxFrames = (int) (PAQA_TEST_DURATION * testParamsPtr->sampleRate);
+ testParamsPtr->framesPerBuffer = DEFAULT_FRAMES_PER_BUFFER;
+ testParamsPtr->baseFrequency = 200.0;
+ testParamsPtr->flags = PAQA_FLAG_TWO_STREAMS;
testParamsPtr->streamFlags = paClipOff; /* we won't output out of range samples so don't bother clipping them */
-
- testParamsPtr->inputParameters.device = inputDevice;
- testParamsPtr->inputParameters.sampleFormat = paFloat32;
- testParamsPtr->inputParameters.channelCount = testParamsPtr->samplesPerFrame;
- testParamsPtr->inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputDevice )->defaultLowInputLatency;
- //testParamsPtr->inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputDevice )->defaultHighInputLatency;
-
- testParamsPtr->outputParameters.device = outputDevice;
- testParamsPtr->outputParameters.sampleFormat = paFloat32;
- testParamsPtr->outputParameters.channelCount = testParamsPtr->samplesPerFrame;
- testParamsPtr->outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputDevice )->defaultLowOutputLatency;
- //testParamsPtr->outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputDevice )->defaultHighOutputLatency;
+
+ testParamsPtr->inputParameters.device = inputDevice;
+ testParamsPtr->inputParameters.sampleFormat = paFloat32;
+ testParamsPtr->inputParameters.channelCount = testParamsPtr->samplesPerFrame;
+ testParamsPtr->inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputDevice )->defaultLowInputLatency;
+ //testParamsPtr->inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputDevice )->defaultHighInputLatency;
+
+ testParamsPtr->outputParameters.device = outputDevice;
+ testParamsPtr->outputParameters.sampleFormat = paFloat32;
+ testParamsPtr->outputParameters.channelCount = testParamsPtr->samplesPerFrame;
+ testParamsPtr->outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputDevice )->defaultLowOutputLatency;
+ //testParamsPtr->outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputDevice )->defaultHighOutputLatency;
}
/*******************************************************************/
static void PaQa_OverrideTestParameters( TestParameters *testParamsPtr, UserOptions *userOptions )
{
- // Check to see if a specific value was requested.
- if( userOptions->sampleRate >= 0 )
- {
- testParamsPtr->sampleRate = userOptions->sampleRate;
- testParamsPtr->maxFrames = (int) (PAQA_TEST_DURATION * testParamsPtr->sampleRate);
- }
- if( userOptions->framesPerBuffer >= 0 )
- {
- testParamsPtr->framesPerBuffer = userOptions->framesPerBuffer;
- }
- if( userOptions->inputLatency >= 0 )
- {
- testParamsPtr->inputParameters.suggestedLatency = userOptions->inputLatency * 0.001;
- }
- if( userOptions->outputLatency >= 0 )
- {
- testParamsPtr->outputParameters.suggestedLatency = userOptions->outputLatency * 0.001;
- }
- printf( " Running with suggested latency (msec): input = %5.2f, out = %5.2f\n",
- (testParamsPtr->inputParameters.suggestedLatency * 1000.0),
- (testParamsPtr->outputParameters.suggestedLatency * 1000.0) );
+ // Check to see if a specific value was requested.
+ if( userOptions->sampleRate >= 0 )
+ {
+ testParamsPtr->sampleRate = userOptions->sampleRate;
+ testParamsPtr->maxFrames = (int) (PAQA_TEST_DURATION * testParamsPtr->sampleRate);
+ }
+ if( userOptions->framesPerBuffer >= 0 )
+ {
+ testParamsPtr->framesPerBuffer = userOptions->framesPerBuffer;
+ }
+ if( userOptions->inputLatency >= 0 )
+ {
+ testParamsPtr->inputParameters.suggestedLatency = userOptions->inputLatency * 0.001;
+ }
+ if( userOptions->outputLatency >= 0 )
+ {
+ testParamsPtr->outputParameters.suggestedLatency = userOptions->outputLatency * 0.001;
+ }
+ printf( " Running with suggested latency (msec): input = %5.2f, out = %5.2f\n",
+ (testParamsPtr->inputParameters.suggestedLatency * 1000.0),
+ (testParamsPtr->outputParameters.suggestedLatency * 1000.0) );
}
/*******************************************************************/
-/**
+/**
* Run a series of tests on this loopback connection.
* @return number of bad channel results
*/
static int PaQa_AnalyzeLoopbackConnection( UserOptions *userOptions, PaDeviceIndex inputDevice, PaDeviceIndex outputDevice )
{
- int iFlags;
- int iRate;
- int iSize;
- int iFormat;
- int savedValue;
- TestParameters testParams;
- const PaDeviceInfo *inputDeviceInfo = Pa_GetDeviceInfo( inputDevice );
- const PaDeviceInfo *outputDeviceInfo = Pa_GetDeviceInfo( outputDevice );
+ int iFlags;
+ int iRate;
+ int iSize;
+ int iFormat;
+ int savedValue;
+ TestParameters testParams;
+ const PaDeviceInfo *inputDeviceInfo = Pa_GetDeviceInfo( inputDevice );
+ const PaDeviceInfo *outputDeviceInfo = Pa_GetDeviceInfo( outputDevice );
int totalBadChannels = 0;
- // test half duplex first because it is more likely to work.
- int flagSettings[] = { PAQA_FLAG_TWO_STREAMS, 0 };
- int numFlagSettings = (sizeof(flagSettings)/sizeof(int));
-
- double sampleRates[] = { 8000.0, 11025.0, 16000.0, 22050.0, 32000.0, 44100.0, 48000.0, 96000.0 };
- int numRates = (sizeof(sampleRates)/sizeof(double));
-
- // framesPerBuffer==0 means PA decides on the buffer size.
- int framesPerBuffers[] = { 0, 16, 32, 40, 64, 100, 128, 256, 512, 1024 };
- int numBufferSizes = (sizeof(framesPerBuffers)/sizeof(int));
-
- PaSampleFormat sampleFormats[] = { paFloat32, paUInt8, paInt8, paInt16, paInt32 };
- const char *sampleFormatNames[] = { "paFloat32", "paUInt8", "paInt8", "paInt16", "paInt32" };
- int numSampleFormats = (sizeof(sampleFormats)/sizeof(PaSampleFormat));
-
+ // test half duplex first because it is more likely to work.
+ int flagSettings[] = { PAQA_FLAG_TWO_STREAMS, 0 };
+ int numFlagSettings = (sizeof(flagSettings)/sizeof(int));
+
+ double sampleRates[] = { 8000.0, 11025.0, 16000.0, 22050.0, 32000.0, 44100.0, 48000.0, 96000.0 };
+ int numRates = (sizeof(sampleRates)/sizeof(double));
+
+ // framesPerBuffer==0 means PA decides on the buffer size.
+ int framesPerBuffers[] = { 0, 16, 32, 40, 64, 100, 128, 256, 512, 1024 };
+ int numBufferSizes = (sizeof(framesPerBuffers)/sizeof(int));
+
+ PaSampleFormat sampleFormats[] = { paFloat32, paUInt8, paInt8, paInt16, paInt32 };
+ const char *sampleFormatNames[] = { "paFloat32", "paUInt8", "paInt8", "paInt16", "paInt32" };
+ int numSampleFormats = (sizeof(sampleFormats)/sizeof(PaSampleFormat));
+
printf( "=============== Analysing Loopback %d to %d =====================\n", outputDevice, inputDevice );
- printf( " Devices: %s => %s\n", outputDeviceInfo->name, inputDeviceInfo->name);
-
- PaQa_SetDefaultTestParameters( &testParams, inputDevice, outputDevice );
-
- PaQa_OverrideTestParameters( &testParams, userOptions );
-
- // Loop though combinations of audio parameters.
- for( iFlags=0; iFlags<numFlagSettings; iFlags++ )
- {
- int numRuns = 0;
-
- testParams.flags = flagSettings[iFlags];
- printf( "\n************ Mode = %s ************\n",
- (( testParams.flags & 1 ) ? s_FlagOnNames[0] : s_FlagOffNames[0]) );
-
- printf("|- requested -|- stream info latency -|- measured ------------------------------\n");
- printf("|-sRate-|-fr/buf-|- in - out - total -|- over/under/calls for in, out -|- frm/buf -|-latency-|- channel results -\n");
-
- // Loop though various sample rates.
- if( userOptions->sampleRate < 0 )
- {
- savedValue = testParams.sampleRate;
- for( iRate=0; iRate<numRates; iRate++ )
- {
+ printf( " Devices: %s => %s\n", outputDeviceInfo->name, inputDeviceInfo->name);
+
+ PaQa_SetDefaultTestParameters( &testParams, inputDevice, outputDevice );
+
+ PaQa_OverrideTestParameters( &testParams, userOptions );
+
+ // Loop though combinations of audio parameters.
+ for( iFlags=0; iFlags<numFlagSettings; iFlags++ )
+ {
+ int numRuns = 0;
+
+ testParams.flags = flagSettings[iFlags];
+ printf( "\n************ Mode = %s ************\n",
+ (( testParams.flags & 1 ) ? s_FlagOnNames[0] : s_FlagOffNames[0]) );
+
+ printf("|- requested -|- stream info latency -|- measured ------------------------------\n");
+ printf("|-sRate-|-fr/buf-|- in - out - total -|- over/under/calls for in, out -|- frm/buf -|-latency-|- channel results -\n");
+
+ // Loop though various sample rates.
+ if( userOptions->sampleRate < 0 )
+ {
+ savedValue = testParams.sampleRate;
+ for( iRate=0; iRate<numRates; iRate++ )
+ {
int numBadChannels;
- // SAMPLE RATE
- testParams.sampleRate = sampleRates[iRate];
- testParams.maxFrames = (int) (PAQA_TEST_DURATION * testParams.sampleRate);
-
- numBadChannels = PaQa_SingleLoopBackTest( userOptions, &testParams );
- totalBadChannels += numBadChannels;
- }
- testParams.sampleRate = savedValue;
- testParams.maxFrames = (int) (PAQA_TEST_DURATION * testParams.sampleRate);
- printf( "\n" );
- numRuns += 1;
- }
-
- // Loop through various buffer sizes.
- if( userOptions->framesPerBuffer < 0 )
- {
- savedValue = testParams.framesPerBuffer;
- for( iSize=0; iSize<numBufferSizes; iSize++ )
- {
+ // SAMPLE RATE
+ testParams.sampleRate = sampleRates[iRate];
+ testParams.maxFrames = (int) (PAQA_TEST_DURATION * testParams.sampleRate);
+
+ numBadChannels = PaQa_SingleLoopBackTest( userOptions, &testParams );
+ totalBadChannels += numBadChannels;
+ }
+ testParams.sampleRate = savedValue;
+ testParams.maxFrames = (int) (PAQA_TEST_DURATION * testParams.sampleRate);
+ printf( "\n" );
+ numRuns += 1;
+ }
+
+ // Loop through various buffer sizes.
+ if( userOptions->framesPerBuffer < 0 )
+ {
+ savedValue = testParams.framesPerBuffer;
+ for( iSize=0; iSize<numBufferSizes; iSize++ )
+ {
int numBadChannels;
- // BUFFER SIZE
- testParams.framesPerBuffer = framesPerBuffers[iSize];
-
- numBadChannels = PaQa_SingleLoopBackTest( userOptions, &testParams );
- totalBadChannels += numBadChannels;
- }
- testParams.framesPerBuffer = savedValue;
- printf( "\n" );
- numRuns += 1;
- }
- // Run one with single parameters in case we did not do a series.
- if( numRuns == 0 )
- {
- int numBadChannels = PaQa_SingleLoopBackTest( userOptions, &testParams );
- totalBadChannels += numBadChannels;
- }
- }
-
- printf("\nTest Sample Formats using Half Duplex IO -----\n" );
-
- PaQa_SetDefaultTestParameters( &testParams, inputDevice, outputDevice );
- testParams.flags = PAQA_FLAG_TWO_STREAMS;
+ // BUFFER SIZE
+ testParams.framesPerBuffer = framesPerBuffers[iSize];
+
+ numBadChannels = PaQa_SingleLoopBackTest( userOptions, &testParams );
+ totalBadChannels += numBadChannels;
+ }
+ testParams.framesPerBuffer = savedValue;
+ printf( "\n" );
+ numRuns += 1;
+ }
+ // Run one with single parameters in case we did not do a series.
+ if( numRuns == 0 )
+ {
+ int numBadChannels = PaQa_SingleLoopBackTest( userOptions, &testParams );
+ totalBadChannels += numBadChannels;
+ }
+ }
+
+ printf("\nTest Sample Formats using Half Duplex IO -----\n" );
+
+ PaQa_SetDefaultTestParameters( &testParams, inputDevice, outputDevice );
+ testParams.flags = PAQA_FLAG_TWO_STREAMS;
for( iFlags= 0; iFlags<4; iFlags++ )
{
// Cycle through combinations of flags.
testParams.streamFlags = 0;
if( iFlags & 1 ) testParams.streamFlags |= paClipOff;
if( iFlags & 2 ) testParams.streamFlags |= paDitherOff;
-
+
for( iFormat=0; iFormat<numSampleFormats; iFormat++ )
- {
+ {
int numBadChannels;
PaSampleFormat format = sampleFormats[ iFormat ];
testParams.inputParameters.sampleFormat = format;
testParams.outputParameters.sampleFormat = format;
printf("Sample format = %d = %s, PaStreamFlags = 0x%02X\n", (int) format, sampleFormatNames[iFormat], (unsigned int) testParams.streamFlags );
numBadChannels = PaQa_SingleLoopBackTest( userOptions, &testParams );
- totalBadChannels += numBadChannels;
+ totalBadChannels += numBadChannels;
}
}
- printf( "\n" );
- printf( "****************************************\n");
-
- return totalBadChannels;
+ printf( "\n" );
+ printf( "****************************************\n");
+
+ return totalBadChannels;
}
/*******************************************************************/
int PaQa_CheckForClippedLoopback( LoopbackContext *loopbackContextPtr )
{
- int clipped = 0;
- TestParameters *testParamsPtr = loopbackContextPtr->test;
-
- // Start in the middle assuming past latency.
- int startFrame = testParamsPtr->maxFrames/2;
- int numFrames = testParamsPtr->maxFrames/2;
-
- // Check to see if the signal is clipped.
- double amplitudeLeft = PaQa_MeasureSineAmplitudeBySlope( &loopbackContextPtr->recordings[0],
- testParamsPtr->baseFrequency, testParamsPtr->sampleRate,
- startFrame, numFrames );
- double gainLeft = amplitudeLeft / testParamsPtr->amplitude;
- double amplitudeRight = PaQa_MeasureSineAmplitudeBySlope( &loopbackContextPtr->recordings[1],
- testParamsPtr->baseFrequency, testParamsPtr->sampleRate,
- startFrame, numFrames );
- double gainRight = amplitudeLeft / testParamsPtr->amplitude;
- printf(" Loop gain: left = %f, right = %f\n", gainLeft, gainRight );
-
- if( (amplitudeLeft > 1.0 ) || (amplitudeRight > 1.0) )
- {
- printf("ERROR - loop gain is too high. Should be around than 1.0. Please lower output level and/or input gain.\n" );
- clipped = 1;
- }
- return clipped;
+ int clipped = 0;
+ TestParameters *testParamsPtr = loopbackContextPtr->test;
+
+ // Start in the middle assuming past latency.
+ int startFrame = testParamsPtr->maxFrames/2;
+ int numFrames = testParamsPtr->maxFrames/2;
+
+ // Check to see if the signal is clipped.
+ double amplitudeLeft = PaQa_MeasureSineAmplitudeBySlope( &loopbackContextPtr->recordings[0],
+ testParamsPtr->baseFrequency, testParamsPtr->sampleRate,
+ startFrame, numFrames );
+ double gainLeft = amplitudeLeft / testParamsPtr->amplitude;
+ double amplitudeRight = PaQa_MeasureSineAmplitudeBySlope( &loopbackContextPtr->recordings[1],
+ testParamsPtr->baseFrequency, testParamsPtr->sampleRate,
+ startFrame, numFrames );
+ double gainRight = amplitudeLeft / testParamsPtr->amplitude;
+ printf(" Loop gain: left = %f, right = %f\n", gainLeft, gainRight );
+
+ if( (amplitudeLeft > 1.0 ) || (amplitudeRight > 1.0) )
+ {
+ printf("ERROR - loop gain is too high. Should be around than 1.0. Please lower output level and/or input gain.\n" );
+ clipped = 1;
+ }
+ return clipped;
}
/*******************************************************************/
int PaQa_MeasureBackgroundNoise( LoopbackContext *loopbackContextPtr, double *rmsPtr )
{
- int result = 0;
- *rmsPtr = 0.0;
- // Rewind so we can record some input.
- loopbackContextPtr->recordings[0].numFrames = 0;
- loopbackContextPtr->recordings[1].numFrames = 0;
- result = PaQa_RunInputOnly( loopbackContextPtr );
- if( result == 0 )
- {
- double leftRMS = PaQa_MeasureRootMeanSquare( loopbackContextPtr->recordings[0].buffer,
- loopbackContextPtr->recordings[0].numFrames );
- double rightRMS = PaQa_MeasureRootMeanSquare( loopbackContextPtr->recordings[1].buffer,
- loopbackContextPtr->recordings[1].numFrames );
- *rmsPtr = (leftRMS + rightRMS) / 2.0;
- }
- return result;
+ int result = 0;
+ *rmsPtr = 0.0;
+ // Rewind so we can record some input.
+ loopbackContextPtr->recordings[0].numFrames = 0;
+ loopbackContextPtr->recordings[1].numFrames = 0;
+ result = PaQa_RunInputOnly( loopbackContextPtr );
+ if( result == 0 )
+ {
+ double leftRMS = PaQa_MeasureRootMeanSquare( loopbackContextPtr->recordings[0].buffer,
+ loopbackContextPtr->recordings[0].numFrames );
+ double rightRMS = PaQa_MeasureRootMeanSquare( loopbackContextPtr->recordings[1].buffer,
+ loopbackContextPtr->recordings[1].numFrames );
+ *rmsPtr = (leftRMS + rightRMS) / 2.0;
+ }
+ return result;
}
/*******************************************************************/
-/**
+/**
* Output a sine wave then try to detect it on input.
*
* @return 1 if loopback connected, 0 if not, or negative error.
*/
int PaQa_CheckForLoopBack( UserOptions *userOptions, PaDeviceIndex inputDevice, PaDeviceIndex outputDevice )
{
- TestParameters testParams;
- LoopbackContext loopbackContext;
- const PaDeviceInfo *inputDeviceInfo;
- const PaDeviceInfo *outputDeviceInfo;
- PaError err = paNoError;
- double minAmplitude;
- int loopbackIsConnected;
+ TestParameters testParams;
+ LoopbackContext loopbackContext;
+ const PaDeviceInfo *inputDeviceInfo;
+ const PaDeviceInfo *outputDeviceInfo;
+ PaError err = paNoError;
+ double minAmplitude;
+ int loopbackIsConnected;
int startFrame, numFrames;
double magLeft, magRight;
- inputDeviceInfo = Pa_GetDeviceInfo( inputDevice );
- if( inputDeviceInfo == NULL )
- {
- printf("ERROR - Pa_GetDeviceInfo for input returned NULL.\n");
- return paInvalidDevice;
- }
- if( inputDeviceInfo->maxInputChannels < 2 )
- {
- return 0;
- }
-
- outputDeviceInfo = Pa_GetDeviceInfo( outputDevice );
- if( outputDeviceInfo == NULL )
- {
- printf("ERROR - Pa_GetDeviceInfo for output returned NULL.\n");
- return paInvalidDevice;
- }
- if( outputDeviceInfo->maxOutputChannels < 2 )
- {
- return 0;
- }
-
- printf( "Look for loopback cable between \"%s\" => \"%s\"\n", outputDeviceInfo->name, inputDeviceInfo->name);
-
- printf( " Default suggested input latency (msec): low = %5.2f, high = %5.2f\n",
- (inputDeviceInfo->defaultLowInputLatency * 1000.0),
- (inputDeviceInfo->defaultHighInputLatency * 1000.0) );
- printf( " Default suggested output latency (msec): low = %5.2f, high = %5.2f\n",
- (outputDeviceInfo->defaultLowOutputLatency * 1000.0),
- (outputDeviceInfo->defaultHighOutputLatency * 1000.0) );
-
- PaQa_SetDefaultTestParameters( &testParams, inputDevice, outputDevice );
-
- PaQa_OverrideTestParameters( &testParams, userOptions );
-
- testParams.maxFrames = (int) (LOOPBACK_DETECTION_DURATION_SECONDS * testParams.sampleRate);
- minAmplitude = testParams.amplitude / 4.0;
-
- // Check to see if the selected formats are supported.
- if( Pa_IsFormatSupported( &testParams.inputParameters, NULL, testParams.sampleRate ) != paFormatIsSupported )
- {
- printf( "Input not supported for this format!\n" );
- return 0;
- }
- if( Pa_IsFormatSupported( NULL, &testParams.outputParameters, testParams.sampleRate ) != paFormatIsSupported )
- {
- printf( "Output not supported for this format!\n" );
- return 0;
- }
-
- PaQa_SetupLoopbackContext( &loopbackContext, &testParams );
-
- if( inputDevice == outputDevice )
- {
- // Use full duplex if checking for loopback on one device.
- testParams.flags &= ~PAQA_FLAG_TWO_STREAMS;
- }
- else
- {
- // Use half duplex if checking for loopback on two different device.
- testParams.flags = PAQA_FLAG_TWO_STREAMS;
- }
- err = PaQa_RunLoopback( &loopbackContext );
- QA_ASSERT_TRUE("loopback detection callback did not run", (loopbackContext.callbackCount > 1) );
-
- // Analyse recording to see if we captured the output.
- // Start in the middle assuming past latency.
- startFrame = testParams.maxFrames/2;
- numFrames = testParams.maxFrames/2;
- magLeft = PaQa_CorrelateSine( &loopbackContext.recordings[0],
- loopbackContext.generators[0].frequency,
- testParams.sampleRate,
- startFrame, numFrames, NULL );
- magRight = PaQa_CorrelateSine( &loopbackContext.recordings[1],
- loopbackContext.generators[1].frequency,
- testParams.sampleRate,
- startFrame, numFrames, NULL );
- printf(" Amplitudes: left = %f, right = %f\n", magLeft, magRight );
-
- // Check for backwards cable.
+ inputDeviceInfo = Pa_GetDeviceInfo( inputDevice );
+ if( inputDeviceInfo == NULL )
+ {
+ printf("ERROR - Pa_GetDeviceInfo for input returned NULL.\n");
+ return paInvalidDevice;
+ }
+ if( inputDeviceInfo->maxInputChannels < 2 )
+ {
+ return 0;
+ }
+
+ outputDeviceInfo = Pa_GetDeviceInfo( outputDevice );
+ if( outputDeviceInfo == NULL )
+ {
+ printf("ERROR - Pa_GetDeviceInfo for output returned NULL.\n");
+ return paInvalidDevice;
+ }
+ if( outputDeviceInfo->maxOutputChannels < 2 )
+ {
+ return 0;
+ }
+
+ printf( "Look for loopback cable between \"%s\" => \"%s\"\n", outputDeviceInfo->name, inputDeviceInfo->name);
+
+ printf( " Default suggested input latency (msec): low = %5.2f, high = %5.2f\n",
+ (inputDeviceInfo->defaultLowInputLatency * 1000.0),
+ (inputDeviceInfo->defaultHighInputLatency * 1000.0) );
+ printf( " Default suggested output latency (msec): low = %5.2f, high = %5.2f\n",
+ (outputDeviceInfo->defaultLowOutputLatency * 1000.0),
+ (outputDeviceInfo->defaultHighOutputLatency * 1000.0) );
+
+ PaQa_SetDefaultTestParameters( &testParams, inputDevice, outputDevice );
+
+ PaQa_OverrideTestParameters( &testParams, userOptions );
+
+ testParams.maxFrames = (int) (LOOPBACK_DETECTION_DURATION_SECONDS * testParams.sampleRate);
+ minAmplitude = testParams.amplitude / 4.0;
+
+ // Check to see if the selected formats are supported.
+ if( Pa_IsFormatSupported( &testParams.inputParameters, NULL, testParams.sampleRate ) != paFormatIsSupported )
+ {
+ printf( "Input not supported for this format!\n" );
+ return 0;
+ }
+ if( Pa_IsFormatSupported( NULL, &testParams.outputParameters, testParams.sampleRate ) != paFormatIsSupported )
+ {
+ printf( "Output not supported for this format!\n" );
+ return 0;
+ }
+
+ PaQa_SetupLoopbackContext( &loopbackContext, &testParams );
+
+ if( inputDevice == outputDevice )
+ {
+ // Use full duplex if checking for loopback on one device.
+ testParams.flags &= ~PAQA_FLAG_TWO_STREAMS;
+ }
+ else
+ {
+ // Use half duplex if checking for loopback on two different device.
+ testParams.flags = PAQA_FLAG_TWO_STREAMS;
+ }
+ err = PaQa_RunLoopback( &loopbackContext );
+ QA_ASSERT_TRUE("loopback detection callback did not run", (loopbackContext.callbackCount > 1) );
+
+ // Analyse recording to see if we captured the output.
+ // Start in the middle assuming past latency.
+ startFrame = testParams.maxFrames/2;
+ numFrames = testParams.maxFrames/2;
+ magLeft = PaQa_CorrelateSine( &loopbackContext.recordings[0],
+ loopbackContext.generators[0].frequency,
+ testParams.sampleRate,
+ startFrame, numFrames, NULL );
+ magRight = PaQa_CorrelateSine( &loopbackContext.recordings[1],
+ loopbackContext.generators[1].frequency,
+ testParams.sampleRate,
+ startFrame, numFrames, NULL );
+ printf(" Amplitudes: left = %f, right = %f\n", magLeft, magRight );
+
+ // Check for backwards cable.
loopbackIsConnected = ((magLeft > minAmplitude) && (magRight > minAmplitude));
- if( !loopbackIsConnected )
- {
- double magLeftReverse = PaQa_CorrelateSine( &loopbackContext.recordings[0],
- loopbackContext.generators[1].frequency,
- testParams.sampleRate,
- startFrame, numFrames, NULL );
-
- double magRightReverse = PaQa_CorrelateSine( &loopbackContext.recordings[1],
- loopbackContext.generators[0].frequency,
- testParams.sampleRate,
- startFrame, numFrames, NULL );
-
- if ((magLeftReverse > minAmplitude) && (magRightReverse>minAmplitude))
- {
- printf("ERROR - You seem to have the left and right channels swapped on the loopback cable!\n");
- }
- }
- else
- {
- double rms = 0.0;
- if( PaQa_CheckForClippedLoopback( &loopbackContext ) )
- {
- // Clipped so don't use this loopback.
- loopbackIsConnected = 0;
- }
-
- err = PaQa_MeasureBackgroundNoise( &loopbackContext, &rms );
- printf(" Background noise = %f\n", rms );
- if( err )
- {
- printf("ERROR - Could not measure background noise on this input!\n");
- loopbackIsConnected = 0;
- }
- else if( rms > MAX_BACKGROUND_NOISE_RMS )
- {
- printf("ERROR - There is too much background noise on this input!\n");
- loopbackIsConnected = 0;
- }
- }
-
- PaQa_TeardownLoopbackContext( &loopbackContext );
- return loopbackIsConnected;
-
+ if( !loopbackIsConnected )
+ {
+ double magLeftReverse = PaQa_CorrelateSine( &loopbackContext.recordings[0],
+ loopbackContext.generators[1].frequency,
+ testParams.sampleRate,
+ startFrame, numFrames, NULL );
+
+ double magRightReverse = PaQa_CorrelateSine( &loopbackContext.recordings[1],
+ loopbackContext.generators[0].frequency,
+ testParams.sampleRate,
+ startFrame, numFrames, NULL );
+
+ if ((magLeftReverse > minAmplitude) && (magRightReverse>minAmplitude))
+ {
+ printf("ERROR - You seem to have the left and right channels swapped on the loopback cable!\n");
+ }
+ }
+ else
+ {
+ double rms = 0.0;
+ if( PaQa_CheckForClippedLoopback( &loopbackContext ) )
+ {
+ // Clipped so don't use this loopback.
+ loopbackIsConnected = 0;
+ }
+
+ err = PaQa_MeasureBackgroundNoise( &loopbackContext, &rms );
+ printf(" Background noise = %f\n", rms );
+ if( err )
+ {
+ printf("ERROR - Could not measure background noise on this input!\n");
+ loopbackIsConnected = 0;
+ }
+ else if( rms > MAX_BACKGROUND_NOISE_RMS )
+ {
+ printf("ERROR - There is too much background noise on this input!\n");
+ loopbackIsConnected = 0;
+ }
+ }
+
+ PaQa_TeardownLoopbackContext( &loopbackContext );
+ return loopbackIsConnected;
+
error:
- PaQa_TeardownLoopbackContext( &loopbackContext );
- return err;
+ PaQa_TeardownLoopbackContext( &loopbackContext );
+ return err;
}
/*******************************************************************/
* If there is a loopback connection then run the analysis.
*/
static int CheckLoopbackAndScan( UserOptions *userOptions,
- PaDeviceIndex iIn, PaDeviceIndex iOut )
+ PaDeviceIndex iIn, PaDeviceIndex iOut )
{
- int loopbackConnected = PaQa_CheckForLoopBack( userOptions, iIn, iOut );
- if( loopbackConnected > 0 )
- {
- PaQa_AnalyzeLoopbackConnection( userOptions, iIn, iOut );
- return 1;
- }
- return 0;
+ int loopbackConnected = PaQa_CheckForLoopBack( userOptions, iIn, iOut );
+ if( loopbackConnected > 0 )
+ {
+ PaQa_AnalyzeLoopbackConnection( userOptions, iIn, iOut );
+ return 1;
+ }
+ return 0;
}
-
+
/*******************************************************************/
/**
* Scan every combination of output to input device.
*/
static int ScanForLoopback(UserOptions *userOptions)
{
- PaDeviceIndex iIn,iOut;
- int numLoopbacks = 0;
+ PaDeviceIndex iIn,iOut;
+ int numLoopbacks = 0;
int numDevices;
- numDevices = Pa_GetDeviceCount();
-
- // If both devices are specified then just use that combination.
- if ((userOptions->inputDevice >= 0) && (userOptions->outputDevice >= 0))
- {
- numLoopbacks += CheckLoopbackAndScan( userOptions, userOptions->inputDevice, userOptions->outputDevice );
- }
- else if (userOptions->inputDevice >= 0)
- {
- // Just scan for output.
- for( iOut=0; iOut<numDevices; iOut++ )
- {
- numLoopbacks += CheckLoopbackAndScan( userOptions, userOptions->inputDevice, iOut );
- }
- }
- else if (userOptions->outputDevice >= 0)
- {
- // Just scan for input.
- for( iIn=0; iIn<numDevices; iIn++ )
- {
- numLoopbacks += CheckLoopbackAndScan( userOptions, iIn, userOptions->outputDevice );
- }
- }
- else
- {
- // Scan both.
- for( iOut=0; iOut<numDevices; iOut++ )
- {
- for( iIn=0; iIn<numDevices; iIn++ )
- {
- numLoopbacks += CheckLoopbackAndScan( userOptions, iIn, iOut );
- }
- }
- }
- QA_ASSERT_TRUE( "No good loopback cable found.", (numLoopbacks > 0) );
- return numLoopbacks;
-
+ numDevices = Pa_GetDeviceCount();
+
+ // If both devices are specified then just use that combination.
+ if ((userOptions->inputDevice >= 0) && (userOptions->outputDevice >= 0))
+ {
+ numLoopbacks += CheckLoopbackAndScan( userOptions, userOptions->inputDevice, userOptions->outputDevice );
+ }
+ else if (userOptions->inputDevice >= 0)
+ {
+ // Just scan for output.
+ for( iOut=0; iOut<numDevices; iOut++ )
+ {
+ numLoopbacks += CheckLoopbackAndScan( userOptions, userOptions->inputDevice, iOut );
+ }
+ }
+ else if (userOptions->outputDevice >= 0)
+ {
+ // Just scan for input.
+ for( iIn=0; iIn<numDevices; iIn++ )
+ {
+ numLoopbacks += CheckLoopbackAndScan( userOptions, iIn, userOptions->outputDevice );
+ }
+ }
+ else
+ {
+ // Scan both.
+ for( iOut=0; iOut<numDevices; iOut++ )
+ {
+ for( iIn=0; iIn<numDevices; iIn++ )
+ {
+ numLoopbacks += CheckLoopbackAndScan( userOptions, iIn, iOut );
+ }
+ }
+ }
+ QA_ASSERT_TRUE( "No good loopback cable found.", (numLoopbacks > 0) );
+ return numLoopbacks;
+
error:
- return -1;
+ return -1;
}
/*==========================================================================================*/
int TestSampleFormatConversion( void )
{
- int i;
- const float floatInput[] = { 1.0, 0.5, -0.5, -1.0 };
-
- const char charInput[] = { 127, 64, -64, -128 };
- const unsigned char ucharInput[] = { 255, 128+64, 64, 0 };
- const short shortInput[] = { 32767, 32768/2, -32768/2, -32768 };
- const int intInput[] = { 2147483647, 2147483647/2, -1073741824 /*-2147483648/2 doesn't work in msvc*/, -2147483648 };
-
- float floatOutput[4];
- short shortOutput[4];
- int intOutput[4];
- unsigned char ucharOutput[4];
- char charOutput[4];
-
- QA_ASSERT_EQUALS("int must be 32-bit", 4, (int) sizeof(int) );
- QA_ASSERT_EQUALS("short must be 16-bit", 2, (int) sizeof(short) );
-
- // from Float ======
- PaQa_ConvertFromFloat( floatInput, 4, paUInt8, ucharOutput );
- for( i=0; i<4; i++ )
- {
- QA_ASSERT_CLOSE_INT( "paFloat32 -> paUInt8 -> error", ucharInput[i], ucharOutput[i], 1 );
- }
-
- PaQa_ConvertFromFloat( floatInput, 4, paInt8, charOutput );
- for( i=0; i<4; i++ )
- {
- QA_ASSERT_CLOSE_INT( "paFloat32 -> paInt8 -> error", charInput[i], charOutput[i], 1 );
- }
-
- PaQa_ConvertFromFloat( floatInput, 4, paInt16, shortOutput );
- for( i=0; i<4; i++ )
- {
- QA_ASSERT_CLOSE_INT( "paFloat32 -> paInt16 error", shortInput[i], shortOutput[i], 1 );
- }
-
- PaQa_ConvertFromFloat( floatInput, 4, paInt32, intOutput );
- for( i=0; i<4; i++ )
- {
- QA_ASSERT_CLOSE_INT( "paFloat32 -> paInt32 error", intInput[i], intOutput[i], 0x00010000 );
- }
-
-
- // to Float ======
- memset( floatOutput, 0, sizeof(floatOutput) );
- PaQa_ConvertToFloat( ucharInput, 4, paUInt8, floatOutput );
- for( i=0; i<4; i++ )
- {
- QA_ASSERT_CLOSE( "paUInt8 -> paFloat32 error", floatInput[i], floatOutput[i], 0.01 );
- }
-
- memset( floatOutput, 0, sizeof(floatOutput) );
- PaQa_ConvertToFloat( charInput, 4, paInt8, floatOutput );
- for( i=0; i<4; i++ )
- {
- QA_ASSERT_CLOSE( "paInt8 -> paFloat32 error", floatInput[i], floatOutput[i], 0.01 );
- }
-
- memset( floatOutput, 0, sizeof(floatOutput) );
- PaQa_ConvertToFloat( shortInput, 4, paInt16, floatOutput );
- for( i=0; i<4; i++ )
- {
- QA_ASSERT_CLOSE( "paInt16 -> paFloat32 error", floatInput[i], floatOutput[i], 0.001 );
- }
-
- memset( floatOutput, 0, sizeof(floatOutput) );
- PaQa_ConvertToFloat( intInput, 4, paInt32, floatOutput );
- for( i=0; i<4; i++ )
- {
- QA_ASSERT_CLOSE( "paInt32 -> paFloat32 error", floatInput[i], floatOutput[i], 0.00001 );
- }
-
- return 0;
-
+ int i;
+ const float floatInput[] = { 1.0, 0.5, -0.5, -1.0 };
+
+ const char charInput[] = { 127, 64, -64, -128 };
+ const unsigned char ucharInput[] = { 255, 128+64, 64, 0 };
+ const short shortInput[] = { 32767, 32768/2, -32768/2, -32768 };
+ const int intInput[] = { 2147483647, 2147483647/2, -1073741824 /*-2147483648/2 doesn't work in msvc*/, -2147483648 };
+
+ float floatOutput[4];
+ short shortOutput[4];
+ int intOutput[4];
+ unsigned char ucharOutput[4];
+ char charOutput[4];
+
+ QA_ASSERT_EQUALS("int must be 32-bit", 4, (int) sizeof(int) );
+ QA_ASSERT_EQUALS("short must be 16-bit", 2, (int) sizeof(short) );
+
+ // from Float ======
+ PaQa_ConvertFromFloat( floatInput, 4, paUInt8, ucharOutput );
+ for( i=0; i<4; i++ )
+ {
+ QA_ASSERT_CLOSE_INT( "paFloat32 -> paUInt8 -> error", ucharInput[i], ucharOutput[i], 1 );
+ }
+
+ PaQa_ConvertFromFloat( floatInput, 4, paInt8, charOutput );
+ for( i=0; i<4; i++ )
+ {
+ QA_ASSERT_CLOSE_INT( "paFloat32 -> paInt8 -> error", charInput[i], charOutput[i], 1 );
+ }
+
+ PaQa_ConvertFromFloat( floatInput, 4, paInt16, shortOutput );
+ for( i=0; i<4; i++ )
+ {
+ QA_ASSERT_CLOSE_INT( "paFloat32 -> paInt16 error", shortInput[i], shortOutput[i], 1 );
+ }
+
+ PaQa_ConvertFromFloat( floatInput, 4, paInt32, intOutput );
+ for( i=0; i<4; i++ )
+ {
+ QA_ASSERT_CLOSE_INT( "paFloat32 -> paInt32 error", intInput[i], intOutput[i], 0x00010000 );
+ }
+
+
+ // to Float ======
+ memset( floatOutput, 0, sizeof(floatOutput) );
+ PaQa_ConvertToFloat( ucharInput, 4, paUInt8, floatOutput );
+ for( i=0; i<4; i++ )
+ {
+ QA_ASSERT_CLOSE( "paUInt8 -> paFloat32 error", floatInput[i], floatOutput[i], 0.01 );
+ }
+
+ memset( floatOutput, 0, sizeof(floatOutput) );
+ PaQa_ConvertToFloat( charInput, 4, paInt8, floatOutput );
+ for( i=0; i<4; i++ )
+ {
+ QA_ASSERT_CLOSE( "paInt8 -> paFloat32 error", floatInput[i], floatOutput[i], 0.01 );
+ }
+
+ memset( floatOutput, 0, sizeof(floatOutput) );
+ PaQa_ConvertToFloat( shortInput, 4, paInt16, floatOutput );
+ for( i=0; i<4; i++ )
+ {
+ QA_ASSERT_CLOSE( "paInt16 -> paFloat32 error", floatInput[i], floatOutput[i], 0.001 );
+ }
+
+ memset( floatOutput, 0, sizeof(floatOutput) );
+ PaQa_ConvertToFloat( intInput, 4, paInt32, floatOutput );
+ for( i=0; i<4; i++ )
+ {
+ QA_ASSERT_CLOSE( "paInt32 -> paFloat32 error", floatInput[i], floatOutput[i], 0.00001 );
+ }
+
+ return 0;
+
error:
- return -1;
+ return -1;
}
/*******************************************************************/
void usage( const char *name )
{
- printf("%s [-i# -o# -l# -r# -s# -m -w -dDir]\n", name);
- printf(" -i# - Input device ID. Will scan for loopback cable if not specified.\n");
- printf(" -o# - Output device ID. Will scan for loopback if not specified.\n");
- printf(" -l# - Latency for both input and output in milliseconds.\n");
- printf(" --inputLatency # Input latency in milliseconds.\n");
- printf(" --outputLatency # Output latency in milliseconds.\n");
- printf(" -r# - Sample Rate in Hz. Will use multiple common rates if not specified.\n");
- printf(" -s# - Size of callback buffer in frames, framesPerBuffer. Will use common values if not specified.\n");
- printf(" -w - Save bad recordings in a WAV file.\n");
- printf(" -dDir - Path for Directory for WAV files. Default is current directory.\n");
- printf(" -m - Just test the DSP Math code and not the audio devices.\n");
- printf(" -v - Verbose reports.\n");
+ printf("%s [-i# -o# -l# -r# -s# -m -w -dDir]\n", name);
+ printf(" -i# - Input device ID. Will scan for loopback cable if not specified.\n");
+ printf(" -o# - Output device ID. Will scan for loopback if not specified.\n");
+ printf(" -l# - Latency for both input and output in milliseconds.\n");
+ printf(" --inputLatency # Input latency in milliseconds.\n");
+ printf(" --outputLatency # Output latency in milliseconds.\n");
+ printf(" -r# - Sample Rate in Hz. Will use multiple common rates if not specified.\n");
+ printf(" -s# - Size of callback buffer in frames, framesPerBuffer. Will use common values if not specified.\n");
+ printf(" -w - Save bad recordings in a WAV file.\n");
+ printf(" -dDir - Path for Directory for WAV files. Default is current directory.\n");
+ printf(" -m - Just test the DSP Math code and not the audio devices.\n");
+ printf(" -v - Verbose reports.\n");
}
/*******************************************************************/
int main( int argc, char **argv )
{
int i;
- UserOptions userOptions;
- int result = 0;
- int justMath = 0;
+ UserOptions userOptions;
+ int result = 0;
+ int justMath = 0;
char *executableName = argv[0];
- printf("PortAudio LoopBack Test built " __DATE__ " at " __TIME__ "\n");
-
- if( argc > 1 ){
- printf("running with arguments:");
- for(i=1; i < argc; ++i )
- printf(" %s", argv[i] );
- printf("\n");
- }else{
- printf("running with no arguments\n");
- }
-
- memset(&userOptions, 0, sizeof(userOptions));
- userOptions.inputDevice = paNoDevice;
- userOptions.outputDevice = paNoDevice;
- userOptions.sampleRate = -1;
- userOptions.framesPerBuffer = -1;
- userOptions.inputLatency = -1;
- userOptions.outputLatency = -1;
- userOptions.waveFilePath = ".";
-
- // Process arguments. Skip name of executable.
- i = 1;
- {
- char *arg = argv[i];
- if( arg[0] == '-' )
- {
- switch(arg[1])
- {
- case 'i':
- userOptions.inputDevice = atoi(&arg[2]);
- break;
- case 'o':
- userOptions.outputDevice = atoi(&arg[2]);
- break;
- case 'l':
- userOptions.inputLatency = userOptions.outputLatency = atoi(&arg[2]);
- break;
- case 'r':
- userOptions.sampleRate = atoi(&arg[2]);
- break;
- case 's':
- userOptions.framesPerBuffer = atoi(&arg[2]);
- break;
-
- case 'm':
- printf("Option -m set so just testing math and not the audio devices.\n");
- justMath = 1;
- break;
-
- case 'w':
- userOptions.saveBadWaves = 1;
- break;
- case 'd':
- userOptions.waveFilePath = &arg[2];
- break;
-
- case 'v':
- userOptions.verbose = 1;
- break;
-
- case 'h':
- usage( executableName );
- exit(0);
- break;
-
- case '-':
- {
- if( strcmp( &arg[2], "inputLatency" ) == 0 )
- {
- i += 1;
- userOptions.inputLatency = atoi(argv[i]);
- }
- else if( strcmp( &arg[2], "outputLatency" ) == 0 )
- {
- i += 1;
- userOptions.outputLatency = atoi(argv[i]);
- }
- else
- {
- printf("Illegal option: %s\n", arg);
- usage( executableName );
- exit(1);
- }
-
- }
- break;
-
-
- default:
- printf("Illegal option: %s\n", arg);
- usage( executableName );
- exit(1);
- break;
- }
- }
- else
- {
- printf("Illegal argument: %s\n", arg);
- usage( executableName );
- exit(1);
-
- }
- i += 1;
- }
-
- result = PaQa_TestAnalyzer();
-
- // Test sample format conversion tool.
- result = TestSampleFormatConversion();
-
- if( (result == 0) && (justMath == 0) )
- {
- Pa_Initialize();
- printf( "PortAudio version number = %d\nPortAudio version text = '%s'\n",
- Pa_GetVersion(), Pa_GetVersionText() );
- printf( "=============== PortAudio Devices ========================\n" );
- PaQa_ListAudioDevices();
+ printf("PortAudio LoopBack Test built " __DATE__ " at " __TIME__ "\n");
+
+ if( argc > 1 ){
+ printf("running with arguments:");
+ for(i=1; i < argc; ++i )
+ printf(" %s", argv[i] );
+ printf("\n");
+ }else{
+ printf("running with no arguments\n");
+ }
+
+ memset(&userOptions, 0, sizeof(userOptions));
+ userOptions.inputDevice = paNoDevice;
+ userOptions.outputDevice = paNoDevice;
+ userOptions.sampleRate = -1;
+ userOptions.framesPerBuffer = -1;
+ userOptions.inputLatency = -1;
+ userOptions.outputLatency = -1;
+ userOptions.waveFilePath = ".";
+
+ // Process arguments. Skip name of executable.
+ i = 1;
+ while( i<argc )
+ {
+ char *arg = argv[i];
+ if( arg[0] == '-' )
+ {
+ switch(arg[1])
+ {
+ case 'i':
+ userOptions.inputDevice = atoi(&arg[2]);
+ break;
+ case 'o':
+ userOptions.outputDevice = atoi(&arg[2]);
+ break;
+ case 'l':
+ userOptions.inputLatency = userOptions.outputLatency = atoi(&arg[2]);
+ break;
+ case 'r':
+ userOptions.sampleRate = atoi(&arg[2]);
+ break;
+ case 's':
+ userOptions.framesPerBuffer = atoi(&arg[2]);
+ break;
+
+ case 'm':
+ printf("Option -m set so just testing math and not the audio devices.\n");
+ justMath = 1;
+ break;
+
+ case 'w':
+ userOptions.saveBadWaves = 1;
+ break;
+ case 'd':
+ userOptions.waveFilePath = &arg[2];
+ break;
+
+ case 'v':
+ userOptions.verbose = 1;
+ break;
+
+ case 'h':
+ usage( executableName );
+ exit(0);
+ break;
+
+ case '-':
+ {
+ if( strcmp( &arg[2], "inputLatency" ) == 0 )
+ {
+ i += 1;
+ userOptions.inputLatency = atoi(argv[i]);
+ }
+ else if( strcmp( &arg[2], "outputLatency" ) == 0 )
+ {
+ i += 1;
+ userOptions.outputLatency = atoi(argv[i]);
+ }
+ else
+ {
+ printf("Illegal option: %s\n", arg);
+ usage( executableName );
+ exit(1);
+ }
+
+ }
+ break;
+
+
+ default:
+ printf("Illegal option: %s\n", arg);
+ usage( executableName );
+ exit(1);
+ break;
+ }
+ }
+ else
+ {
+ printf("Illegal argument: %s\n", arg);
+ usage( executableName );
+ exit(1);
+
+ }
+ i += 1;
+ }
+
+ result = PaQa_TestAnalyzer();
+
+ // Test sample format conversion tool.
+ result = TestSampleFormatConversion();
+
+ if( (result == 0) && (justMath == 0) )
+ {
+ Pa_Initialize();
+ printf( "PortAudio version number = %d\nPortAudio version text = '%s'\n",
+ Pa_GetVersion(), Pa_GetVersionText() );
+ printf( "=============== PortAudio Devices ========================\n" );
+ PaQa_ListAudioDevices();
if( Pa_GetDeviceCount() == 0 )
printf( "no devices found.\n" );
-
- printf( "=============== Detect Loopback ==========================\n" );
- ScanForLoopback(&userOptions);
-
- Pa_Terminate();
- }
-
- if (g_testsFailed == 0)
- {
- printf("PortAudio QA SUCCEEDED! %d tests passed, %d tests failed\n", g_testsPassed, g_testsFailed );
- return 0;
-
- }
- else
- {
- printf("PortAudio QA FAILED! %d tests passed, %d tests failed\n", g_testsPassed, g_testsFailed );
- return 1;
- }
+
+ printf( "=============== Detect Loopback ==========================\n" );
+ ScanForLoopback(&userOptions);
+
+ Pa_Terminate();
+ }
+
+ if (g_testsFailed == 0)
+ {
+ printf("PortAudio QA SUCCEEDED! %d tests passed, %d tests failed\n", g_testsPassed, g_testsFailed );
+ return 0;
+
+ }
+ else
+ {
+ printf("PortAudio QA FAILED! %d tests passed, %d tests failed\n", g_testsPassed, g_testsFailed );
+ return 1;
+ }
}
*/
/*
- * The text above constitutes the entire PortAudio license; however,
+ * The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
* license above.
*/
void PaQa_ListAudioDevices(void)
{
int i, numDevices;
- const PaDeviceInfo *deviceInfo;
- numDevices = Pa_GetDeviceCount();
+ const PaDeviceInfo *deviceInfo;
+ numDevices = Pa_GetDeviceCount();
for( i=0; i<numDevices; i++ )
{
deviceInfo = Pa_GetDeviceInfo( i );
printf( "#%d: ", i );
printf( "%2d in", deviceInfo->maxInputChannels );
printf( ", %2d out", deviceInfo->maxOutputChannels );
- printf( ", %s", deviceInfo->name );
+ printf( ", %s", deviceInfo->name );
printf( ", on %s\n", Pa_GetHostApiInfo( deviceInfo->hostApi )->name );
- }
+ }
}
/*******************************************************************/
void PaQa_ConvertToFloat( const void *input, int numSamples, PaSampleFormat inFormat, float *output )
{
- int i;
- switch( inFormat )
- {
- case paUInt8:
- {
- unsigned char *data = (unsigned char *)input;
- for( i=0; i<numSamples; i++ )
- {
- int value = *data++;
- value -= 128;
- *output++ = value / 128.0f;
- }
- }
- break;
-
- case paInt8:
- {
- char *data = (char *)input;
- for( i=0; i<numSamples; i++ )
- {
- int value = *data++;
- *output++ = value / 128.0f;
- }
- }
- break;
-
- case paInt16:
- {
- short *data = (short *)input;
- for( i=0; i<numSamples; i++ )
- {
- *output++ = *data++ / 32768.0f;
- }
- }
- break;
-
- case paInt32:
- {
- int *data = (int *)input;
- for( i=0; i<numSamples; i++ )
- {
- int value = (*data++) >> 8;
- float fval = (float) (value / ((double) 0x00800000));
- *output++ = fval;
- }
- }
- break;
- }
-
+ int i;
+ switch( inFormat )
+ {
+ case paUInt8:
+ {
+ unsigned char *data = (unsigned char *)input;
+ for( i=0; i<numSamples; i++ )
+ {
+ int value = *data++;
+ value -= 128;
+ *output++ = value / 128.0f;
+ }
+ }
+ break;
+
+ case paInt8:
+ {
+ char *data = (char *)input;
+ for( i=0; i<numSamples; i++ )
+ {
+ int value = *data++;
+ *output++ = value / 128.0f;
+ }
+ }
+ break;
+
+ case paInt16:
+ {
+ short *data = (short *)input;
+ for( i=0; i<numSamples; i++ )
+ {
+ *output++ = *data++ / 32768.0f;
+ }
+ }
+ break;
+
+ case paInt32:
+ {
+ int *data = (int *)input;
+ for( i=0; i<numSamples; i++ )
+ {
+ int value = (*data++) >> 8;
+ float fval = (float) (value / ((double) 0x00800000));
+ *output++ = fval;
+ }
+ }
+ break;
+ }
+
}
/*******************************************************************/
void PaQa_ConvertFromFloat( const float *input, int numSamples, PaSampleFormat outFormat, void *output )
{
- int i;
- switch( outFormat )
- {
- case paUInt8:
- {
- unsigned char *data = (unsigned char *)output;
- for( i=0; i<numSamples; i++ )
- {
- float value = *input++;
- int byte = ((int) (value * 127)) + 128;
- *data++ = (unsigned char) byte;
- }
- }
- break;
-
- case paInt8:
- {
- char *data = (char *)output;
- for( i=0; i<numSamples; i++ )
- {
- float value = *input++;
- int byte = (int) (value * 127);
- *data++ = (char) byte;
- }
- }
- break;
-
- case paInt16:
- {
- short *data = (short *)output;
- for( i=0; i<numSamples; i++ )
- {
- float value = *input++;
- // Use asymmetric conversion to avoid clipping.
- short sval = value * 32767.0;
- *data++ = sval;
- }
- }
- break;
-
- case paInt32:
- {
- int *data = (int *)output;
- for( i=0; i<numSamples; i++ )
- {
- float value = *input++;
- // Use asymmetric conversion to avoid clipping.
- int ival = value * ((double) 0x007FFFF0);
- ival = ival << 8;
- *data++ = ival;
- }
- }
- break;
- }
-
+ int i;
+ switch( outFormat )
+ {
+ case paUInt8:
+ {
+ unsigned char *data = (unsigned char *)output;
+ for( i=0; i<numSamples; i++ )
+ {
+ float value = *input++;
+ int byte = ((int) (value * 127)) + 128;
+ *data++ = (unsigned char) byte;
+ }
+ }
+ break;
+
+ case paInt8:
+ {
+ char *data = (char *)output;
+ for( i=0; i<numSamples; i++ )
+ {
+ float value = *input++;
+ int byte = (int) (value * 127);
+ *data++ = (char) byte;
+ }
+ }
+ break;
+
+ case paInt16:
+ {
+ short *data = (short *)output;
+ for( i=0; i<numSamples; i++ )
+ {
+ float value = *input++;
+ // Use asymmetric conversion to avoid clipping.
+ short sval = value * 32767.0;
+ *data++ = sval;
+ }
+ }
+ break;
+
+ case paInt32:
+ {
+ int *data = (int *)output;
+ for( i=0; i<numSamples; i++ )
+ {
+ float value = *input++;
+ // Use asymmetric conversion to avoid clipping.
+ int ival = value * ((double) 0x007FFFF0);
+ ival = ival << 8;
+ *data++ = ival;
+ }
+ }
+ break;
+ }
+
}
*/
/*
- * The text above constitutes the entire PortAudio license; however,
+ * The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
* license above.
*/
*/
/*
- * The text above constitutes the entire PortAudio license; however,
+ * The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
* license above.
*/
extern int g_testsFailed;
#define QA_ASSERT_TRUE( message, flag ) \
- if( !(flag) ) \
- { \
- printf( "%s:%d - ERROR - %s\n", __FILE__, __LINE__, message ); \
- g_testsFailed++; \
- goto error; \
- } \
- else g_testsPassed++;
+ if( !(flag) ) \
+ { \
+ printf( "%s:%d - ERROR - %s\n", __FILE__, __LINE__, message ); \
+ g_testsFailed++; \
+ goto error; \
+ } \
+ else g_testsPassed++;
#define QA_ASSERT_EQUALS( message, expected, actual ) \
- if( ((expected) != (actual)) ) \
- { \
- printf( "%s:%d - ERROR - %s, expected %d, got %d\n", __FILE__, __LINE__, message, expected, actual ); \
- g_testsFailed++; \
- goto error; \
- } \
- else g_testsPassed++;
+ if( ((expected) != (actual)) ) \
+ { \
+ printf( "%s:%d - ERROR - %s, expected %d, got %d\n", __FILE__, __LINE__, message, expected, actual ); \
+ g_testsFailed++; \
+ goto error; \
+ } \
+ else g_testsPassed++;
#define QA_ASSERT_CLOSE( message, expected, actual, tolerance ) \
- if (fabs((expected)-(actual))>(tolerance)) \
- { \
- printf( "%s:%d - ERROR - %s, expected %f, got %f, tol=%f\n", __FILE__, __LINE__, message, ((double)(expected)), ((double)(actual)), ((double)(tolerance)) ); \
- g_testsFailed++; \
- goto error; \
- } \
- else g_testsPassed++;
+ if (fabs((expected)-(actual))>(tolerance)) \
+ { \
+ printf( "%s:%d - ERROR - %s, expected %f, got %f, tol=%f\n", __FILE__, __LINE__, message, ((double)(expected)), ((double)(actual)), ((double)(tolerance)) ); \
+ g_testsFailed++; \
+ goto error; \
+ } \
+ else g_testsPassed++;
#define QA_ASSERT_CLOSE_INT( message, expected, actual, tolerance ) \
if (abs((expected)-(actual))>(tolerance)) \
*/
/*
- * The text above constitutes the entire PortAudio license; however,
+ * The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
* license above.
*/
*/
static int TestSingleMonoTone( void )
{
- int result = 0;
- PaQaSineGenerator generator;
- PaQaRecording recording;
- float buffer[FRAMES_PER_BLOCK];
- double sampleRate = 44100.0;
- int maxFrames = ((int)sampleRate) * 1;
- int samplesPerFrame = 1;
- int stride = 1;
+ int result = 0;
+ PaQaSineGenerator generator;
+ PaQaRecording recording;
+ float buffer[FRAMES_PER_BLOCK];
+ double sampleRate = 44100.0;
+ int maxFrames = ((int)sampleRate) * 1;
+ int samplesPerFrame = 1;
+ int stride = 1;
int done = 0;
- double freq = 234.5;
- double amp = 0.5;
-
+ double freq = 234.5;
+ double amp = 0.5;
+
double mag1, mag2;
- // Setup a sine oscillator.
- PaQa_SetupSineGenerator( &generator, freq, amp, sampleRate );
-
- result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate );
- QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
-
- done = 0;
- while (!done)
- {
- PaQa_EraseBuffer( buffer, FRAMES_PER_BLOCK, samplesPerFrame );
- PaQa_MixSine( &generator, buffer, FRAMES_PER_BLOCK, stride );
- done = PaQa_WriteRecording( &recording, buffer, FRAMES_PER_BLOCK, samplesPerFrame );
- }
-
- mag1 = PaQa_CorrelateSine( &recording, freq, sampleRate, 0, recording.numFrames, NULL );
- QA_ASSERT_CLOSE( "exact frequency match", amp, mag1, 0.01 );
-
- mag2 = PaQa_CorrelateSine( &recording, freq * 1.23, sampleRate, 0, recording.numFrames, NULL );
- QA_ASSERT_CLOSE( "wrong frequency", 0.0, mag2, 0.01 );
-
- PaQa_TerminateRecording( &recording );
- return 0;
-
+ // Setup a sine oscillator.
+ PaQa_SetupSineGenerator( &generator, freq, amp, sampleRate );
+
+ result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate );
+ QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
+
+ done = 0;
+ while (!done)
+ {
+ PaQa_EraseBuffer( buffer, FRAMES_PER_BLOCK, samplesPerFrame );
+ PaQa_MixSine( &generator, buffer, FRAMES_PER_BLOCK, stride );
+ done = PaQa_WriteRecording( &recording, buffer, FRAMES_PER_BLOCK, samplesPerFrame );
+ }
+
+ mag1 = PaQa_CorrelateSine( &recording, freq, sampleRate, 0, recording.numFrames, NULL );
+ QA_ASSERT_CLOSE( "exact frequency match", amp, mag1, 0.01 );
+
+ mag2 = PaQa_CorrelateSine( &recording, freq * 1.23, sampleRate, 0, recording.numFrames, NULL );
+ QA_ASSERT_CLOSE( "wrong frequency", 0.0, mag2, 0.01 );
+
+ PaQa_TerminateRecording( &recording );
+ return 0;
+
error:
- PaQa_TerminateRecording( &recording);
- return 1;
-
+ PaQa_TerminateRecording( &recording);
+ return 1;
+
}
/*==========================================================================================*/
static int TestMixedMonoTones( void )
{
- int i;
- int result = 0;
+ int i;
+ int result = 0;
#define NUM_TONES (5)
- PaQaSineGenerator generators[NUM_TONES];
- PaQaRecording recording;
- float buffer[FRAMES_PER_BLOCK];
- double sampleRate = 44100.0;
- int maxFrames = ((int)sampleRate) * 1;
- int samplesPerFrame = 1;
-
- double baseFreq = 234.5;
- double amp = 0.1;
-
+ PaQaSineGenerator generators[NUM_TONES];
+ PaQaRecording recording;
+ float buffer[FRAMES_PER_BLOCK];
+ double sampleRate = 44100.0;
+ int maxFrames = ((int)sampleRate) * 1;
+ int samplesPerFrame = 1;
+
+ double baseFreq = 234.5;
+ double amp = 0.1;
+
double mag2;
int stride = samplesPerFrame;
- int done = 0;
-
- // Setup a sine oscillator.
- for( i=0; i<NUM_TONES; i++ )
- {
- PaQa_SetupSineGenerator( &generators[i], PaQa_GetNthFrequency( baseFreq, i ), amp, sampleRate );
- }
-
- result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate );
- QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
-
- done = 0;
- while (!done)
- {
- PaQa_EraseBuffer( buffer, FRAMES_PER_BLOCK, samplesPerFrame );
- for( i=0; i<NUM_TONES; i++ )
- {
- PaQa_MixSine( &generators[i], buffer, FRAMES_PER_BLOCK, stride );
- }
- done = PaQa_WriteRecording( &recording, buffer, FRAMES_PER_BLOCK, samplesPerFrame );
- }
-
- for( i=0; i<NUM_TONES; i++ )
- {
- double mag = PaQa_CorrelateSine( &recording, PaQa_GetNthFrequency( baseFreq, i), sampleRate, 0, recording.numFrames, NULL );
- QA_ASSERT_CLOSE( "exact frequency match", amp, mag, 0.01 );
- }
-
- mag2 = PaQa_CorrelateSine( &recording, baseFreq * 0.87, sampleRate, 0, recording.numFrames, NULL );
- QA_ASSERT_CLOSE( "wrong frequency", 0.0, mag2, 0.01 );
-
- PaQa_TerminateRecording( &recording );
- return 0;
-
+ int done = 0;
+
+ // Setup a sine oscillator.
+ for( i=0; i<NUM_TONES; i++ )
+ {
+ PaQa_SetupSineGenerator( &generators[i], PaQa_GetNthFrequency( baseFreq, i ), amp, sampleRate );
+ }
+
+ result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate );
+ QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
+
+ done = 0;
+ while (!done)
+ {
+ PaQa_EraseBuffer( buffer, FRAMES_PER_BLOCK, samplesPerFrame );
+ for( i=0; i<NUM_TONES; i++ )
+ {
+ PaQa_MixSine( &generators[i], buffer, FRAMES_PER_BLOCK, stride );
+ }
+ done = PaQa_WriteRecording( &recording, buffer, FRAMES_PER_BLOCK, samplesPerFrame );
+ }
+
+ for( i=0; i<NUM_TONES; i++ )
+ {
+ double mag = PaQa_CorrelateSine( &recording, PaQa_GetNthFrequency( baseFreq, i), sampleRate, 0, recording.numFrames, NULL );
+ QA_ASSERT_CLOSE( "exact frequency match", amp, mag, 0.01 );
+ }
+
+ mag2 = PaQa_CorrelateSine( &recording, baseFreq * 0.87, sampleRate, 0, recording.numFrames, NULL );
+ QA_ASSERT_CLOSE( "wrong frequency", 0.0, mag2, 0.01 );
+
+ PaQa_TerminateRecording( &recording );
+ return 0;
+
error:
- PaQa_TerminateRecording( &recording);
- return 1;
-
+ PaQa_TerminateRecording( &recording);
+ return 1;
+
}
static void MakeRecordingWithAddedFrames( PaQaRecording *recording, PaQaTestTone *testTone, int glitchPosition, int framesToAdd )
{
- PaQaSineGenerator generator;
+ PaQaSineGenerator generator;
#define BUFFER_SIZE 512
- float buffer[BUFFER_SIZE];
-
+ float buffer[BUFFER_SIZE];
+
int frameCounter = testTone->startDelay;
-
- int stride = 1;
- // Record some initial silence.
- int done = PaQa_WriteSilence( recording, testTone->startDelay );
-
+
+ int stride = 1;
+ // Record some initial silence.
+ int done = PaQa_WriteSilence( recording, testTone->startDelay );
+
// Setup a sine oscillator.
- PaQa_SetupSineGenerator( &generator, testTone->frequency, testTone->amplitude, testTone->sampleRate );
-
- while (!done)
- {
- int framesThisLoop = BUFFER_SIZE;
-
- if( frameCounter == glitchPosition )
- {
- if( framesToAdd > 0 )
- {
- // Record some frozen data without advancing the sine generator.
- done = PaQa_RecordFreeze( recording, framesToAdd );
- frameCounter += framesToAdd;
- }
- else if( framesToAdd < 0 )
- {
- // Advance sine generator a few frames.
- PaQa_MixSine( &generator, buffer, 0 - framesToAdd, stride );
- }
-
- }
- else if( (frameCounter < glitchPosition) && ((frameCounter + framesThisLoop) > glitchPosition) )
- {
- // Go right up to the glitchPosition.
- framesThisLoop = glitchPosition - frameCounter;
- }
-
- if( framesThisLoop > 0 )
- {
- PaQa_EraseBuffer( buffer, framesThisLoop, testTone->samplesPerFrame );
- PaQa_MixSine( &generator, buffer, framesThisLoop, stride );
- done = PaQa_WriteRecording( recording, buffer, framesThisLoop, testTone->samplesPerFrame );
- }
- frameCounter += framesThisLoop;
- }
+ PaQa_SetupSineGenerator( &generator, testTone->frequency, testTone->amplitude, testTone->sampleRate );
+
+ while (!done)
+ {
+ int framesThisLoop = BUFFER_SIZE;
+
+ if( frameCounter == glitchPosition )
+ {
+ if( framesToAdd > 0 )
+ {
+ // Record some frozen data without advancing the sine generator.
+ done = PaQa_RecordFreeze( recording, framesToAdd );
+ frameCounter += framesToAdd;
+ }
+ else if( framesToAdd < 0 )
+ {
+ // Advance sine generator a few frames.
+ PaQa_MixSine( &generator, buffer, 0 - framesToAdd, stride );
+ }
+
+ }
+ else if( (frameCounter < glitchPosition) && ((frameCounter + framesThisLoop) > glitchPosition) )
+ {
+ // Go right up to the glitchPosition.
+ framesThisLoop = glitchPosition - frameCounter;
+ }
+
+ if( framesThisLoop > 0 )
+ {
+ PaQa_EraseBuffer( buffer, framesThisLoop, testTone->samplesPerFrame );
+ PaQa_MixSine( &generator, buffer, framesThisLoop, stride );
+ done = PaQa_WriteRecording( recording, buffer, framesThisLoop, testTone->samplesPerFrame );
+ }
+ frameCounter += framesThisLoop;
+ }
}
static void MakeCleanRecording( PaQaRecording *recording, PaQaTestTone *testTone )
{
- PaQaSineGenerator generator;
+ PaQaSineGenerator generator;
#define BUFFER_SIZE 512
- float buffer[BUFFER_SIZE];
-
- int stride = 1;
- // Record some initial silence.
- int done = PaQa_WriteSilence( recording, testTone->startDelay );
-
- // Setup a sine oscillator.
- PaQa_SetupSineGenerator( &generator, testTone->frequency, testTone->amplitude, testTone->sampleRate );
-
- // Generate recording with good phase.
- while (!done)
- {
- PaQa_EraseBuffer( buffer, BUFFER_SIZE, testTone->samplesPerFrame );
- PaQa_MixSine( &generator, buffer, BUFFER_SIZE, stride );
- done = PaQa_WriteRecording( recording, buffer, BUFFER_SIZE, testTone->samplesPerFrame );
- }
+ float buffer[BUFFER_SIZE];
+
+ int stride = 1;
+ // Record some initial silence.
+ int done = PaQa_WriteSilence( recording, testTone->startDelay );
+
+ // Setup a sine oscillator.
+ PaQa_SetupSineGenerator( &generator, testTone->frequency, testTone->amplitude, testTone->sampleRate );
+
+ // Generate recording with good phase.
+ while (!done)
+ {
+ PaQa_EraseBuffer( buffer, BUFFER_SIZE, testTone->samplesPerFrame );
+ PaQa_MixSine( &generator, buffer, BUFFER_SIZE, stride );
+ done = PaQa_WriteRecording( recording, buffer, BUFFER_SIZE, testTone->samplesPerFrame );
+ }
}
/*==========================================================================================*/
static void MakeRecordingWithPop( PaQaRecording *recording, PaQaTestTone *testTone, int popPosition, int popWidth, double popAmplitude )
{
- int i;
-
- MakeCleanRecording( recording, testTone );
-
- // Apply glitch to good recording.
- if( (popPosition + popWidth) >= recording->numFrames )
- {
- popWidth = (recording->numFrames - popPosition) - 1;
- }
-
-
for( i=0; i<popWidth; i++ )
- {
- float good = recording->buffer[i+popPosition];
- float bad = (good > 0.0) ? (good - popAmplitude) : (good + popAmplitude);
- recording->buffer[i+popPosition] = bad;
- }
+ int i;
+
+ MakeCleanRecording( recording, testTone );
+
+ // Apply glitch to good recording.
+ if( (popPosition + popWidth) >= recording->numFrames )
+ {
+ popWidth = (recording->numFrames - popPosition) - 1;
+ }
+
+ for( i=0; i<popWidth; i++ )
+ {
+ float good = recording->buffer[i+popPosition];
+ float bad = (good > 0.0) ? (good - popAmplitude) : (good + popAmplitude);
+ recording->buffer[i+popPosition] = bad;
+ }
}
/*==========================================================================================*/
*/
static int TestDetectSinglePhaseError( double sampleRate, int cycleSize, int latencyFrames, int glitchPosition, int framesAdded )
{
- int result = 0;
- PaQaRecording recording;
- PaQaTestTone testTone;
- PaQaAnalysisResult analysisResult = { 0.0 };
- int framesDropped = 0;
+ int result = 0;
+ PaQaRecording recording;
+ PaQaTestTone testTone;
+ PaQaAnalysisResult analysisResult = { 0.0 };
+ int framesDropped = 0;
int maxFrames = ((int)sampleRate) * 2;
- testTone.samplesPerFrame = 1;
- testTone.sampleRate = sampleRate;
- testTone.frequency = sampleRate / cycleSize;
- testTone.amplitude = 0.5;
- testTone.startDelay = latencyFrames;
-
- result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate );
- QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
-
- MakeRecordingWithAddedFrames( &recording, &testTone, glitchPosition, framesAdded );
-
- PaQa_AnalyseRecording( &recording, &testTone, &analysisResult );
-
- if( framesAdded < 0 )
- {
- framesDropped = -framesAdded;
- framesAdded = 0;
- }
-
+ testTone.samplesPerFrame = 1;
+ testTone.sampleRate = sampleRate;
+ testTone.frequency = sampleRate / cycleSize;
+ testTone.amplitude = 0.5;
+ testTone.startDelay = latencyFrames;
+
+ result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate );
+ QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
+
+ MakeRecordingWithAddedFrames( &recording, &testTone, glitchPosition, framesAdded );
+
+ PaQa_AnalyseRecording( &recording, &testTone, &analysisResult );
+
+ if( framesAdded < 0 )
+ {
+ framesDropped = -framesAdded;
+ framesAdded = 0;
+ }
+
#if PRINT_REPORTS
- printf("\n=== Dropped Frame Analysis ===================\n");
- printf(" expected actual\n");
- printf(" latency: %10.3f %10.3f\n", (double)latencyFrames, analysisResult.latency );
- printf(" num added frames: %10.3f %10.3f\n", (double)framesAdded, analysisResult.numAddedFrames );
- printf(" added frames at: %10.3f %10.3f\n", (double)glitchPosition, analysisResult.addedFramesPosition );
- printf(" num dropped frames: %10.3f %10.3f\n", (double)framesDropped, analysisResult.numDroppedFrames );
- printf(" dropped frames at: %10.3f %10.3f\n", (double)glitchPosition, analysisResult.droppedFramesPosition );
+ printf("\n=== Dropped Frame Analysis ===================\n");
+ printf(" expected actual\n");
+ printf(" latency: %10.3f %10.3f\n", (double)latencyFrames, analysisResult.latency );
+ printf(" num added frames: %10.3f %10.3f\n", (double)framesAdded, analysisResult.numAddedFrames );
+ printf(" added frames at: %10.3f %10.3f\n", (double)glitchPosition, analysisResult.addedFramesPosition );
+ printf(" num dropped frames: %10.3f %10.3f\n", (double)framesDropped, analysisResult.numDroppedFrames );
+ printf(" dropped frames at: %10.3f %10.3f\n", (double)glitchPosition, analysisResult.droppedFramesPosition );
#endif
-
- QA_ASSERT_CLOSE( "PaQa_AnalyseRecording latency", latencyFrames, analysisResult.latency, 0.5 );
- QA_ASSERT_CLOSE( "PaQa_AnalyseRecording framesAdded", framesAdded, analysisResult.numAddedFrames, 1.0 );
- QA_ASSERT_CLOSE( "PaQa_AnalyseRecording framesDropped", framesDropped, analysisResult.numDroppedFrames, 1.0 );
-// QA_ASSERT_CLOSE( "PaQa_AnalyseRecording glitchPosition", glitchPosition, analysisResult.glitchPosition, cycleSize );
-
- PaQa_TerminateRecording( &recording );
- return 0;
-
+
+ QA_ASSERT_CLOSE( "PaQa_AnalyseRecording latency", latencyFrames, analysisResult.latency, 0.5 );
+ QA_ASSERT_CLOSE( "PaQa_AnalyseRecording framesAdded", framesAdded, analysisResult.numAddedFrames, 1.0 );
+ QA_ASSERT_CLOSE( "PaQa_AnalyseRecording framesDropped", framesDropped, analysisResult.numDroppedFrames, 1.0 );
+// QA_ASSERT_CLOSE( "PaQa_AnalyseRecording glitchPosition", glitchPosition, analysisResult.glitchPosition, cycleSize );
+
+ PaQa_TerminateRecording( &recording );
+ return 0;
+
error:
- PaQa_TerminateRecording( &recording);
- return 1;
-}
+ PaQa_TerminateRecording( &recording);
+ return 1;
+}
/*==========================================================================================*/
/**
*/
static int TestDetectPhaseErrors( void )
{
- int result;
-
- result = TestDetectSinglePhaseError( 44100, 200, 477, -1, 0 );
- if( result < 0 ) return result;
+ int result;
+
+ result = TestDetectSinglePhaseError( 44100, 200, 477, -1, 0 );
+ if( result < 0 ) return result;
/*
- result = TestDetectSinglePhaseError( 44100, 200, 77, -1, 0 );
- if( result < 0 ) return result;
-
- result = TestDetectSinglePhaseError( 44100, 200, 83, 3712, 9 );
- if( result < 0 ) return result;
-
- result = TestDetectSinglePhaseError( 44100, 280, 83, 3712, 27 );
- if( result < 0 ) return result;
-
- result = TestDetectSinglePhaseError( 44100, 200, 234, 3712, -9 );
- if( result < 0 ) return result;
-
- result = TestDetectSinglePhaseError( 44100, 200, 2091, 8923, -2 );
- if( result < 0 ) return result;
-
- result = TestDetectSinglePhaseError( 44100, 120, 1782, 5772, -18 );
- if( result < 0 ) return result;
-
- // Note that if the frequency is too high then it is hard to detect single dropped frames.
- result = TestDetectSinglePhaseError( 44100, 200, 500, 4251, -1 );
- if( result < 0 ) return result;
+ result = TestDetectSinglePhaseError( 44100, 200, 77, -1, 0 );
+ if( result < 0 ) return result;
+
+ result = TestDetectSinglePhaseError( 44100, 200, 83, 3712, 9 );
+ if( result < 0 ) return result;
+
+ result = TestDetectSinglePhaseError( 44100, 280, 83, 3712, 27 );
+ if( result < 0 ) return result;
+
+ result = TestDetectSinglePhaseError( 44100, 200, 234, 3712, -9 );
+ if( result < 0 ) return result;
+
+ result = TestDetectSinglePhaseError( 44100, 200, 2091, 8923, -2 );
+ if( result < 0 ) return result;
+
+ result = TestDetectSinglePhaseError( 44100, 120, 1782, 5772, -18 );
+ if( result < 0 ) return result;
+
+ // Note that if the frequency is too high then it is hard to detect single dropped frames.
+ result = TestDetectSinglePhaseError( 44100, 200, 500, 4251, -1 );
+ if( result < 0 ) return result;
*/
- return 0;
+ return 0;
}
/*==========================================================================================*/
*/
static int TestDetectSinglePop( double sampleRate, int cycleSize, int latencyFrames, int popPosition, int popWidth, double popAmplitude )
{
- int result = 0;
- PaQaRecording recording;
- PaQaTestTone testTone;
- PaQaAnalysisResult analysisResult = { 0.0 };
- int maxFrames = ((int)sampleRate) * 2;
-
- testTone.samplesPerFrame = 1;
- testTone.sampleRate = sampleRate;
- testTone.frequency = sampleRate / cycleSize;
- testTone.amplitude = 0.5;
- testTone.startDelay = latencyFrames;
-
- result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate );
- QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
-
- MakeRecordingWithPop( &recording, &testTone, popPosition, popWidth, popAmplitude );
-
- PaQa_AnalyseRecording( &recording, &testTone, &analysisResult );
-
+ int result = 0;
+ PaQaRecording recording;
+ PaQaTestTone testTone;
+ PaQaAnalysisResult analysisResult = { 0.0 };
+ int maxFrames = ((int)sampleRate) * 2;
+
+ testTone.samplesPerFrame = 1;
+ testTone.sampleRate = sampleRate;
+ testTone.frequency = sampleRate / cycleSize;
+ testTone.amplitude = 0.5;
+ testTone.startDelay = latencyFrames;
+
+ result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate );
+ QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
+
+ MakeRecordingWithPop( &recording, &testTone, popPosition, popWidth, popAmplitude );
+
+ PaQa_AnalyseRecording( &recording, &testTone, &analysisResult );
+
#if PRINT_REPORTS
- printf("\n=== Pop Analysis ===================\n");
- printf(" expected actual\n");
- printf(" latency: %10.3f %10.3f\n", (double)latencyFrames, analysisResult.latency );
- printf(" popPosition: %10.3f %10.3f\n", (double)popPosition, analysisResult.popPosition );
- printf(" popAmplitude: %10.3f %10.3f\n", popAmplitude, analysisResult.popAmplitude );
- printf(" cycleSize: %6d\n", cycleSize );
- printf(" num added frames: %10.3f\n", analysisResult.numAddedFrames );
- printf(" added frames at: %10.3f\n", analysisResult.addedFramesPosition );
- printf(" num dropped frames: %10.3f\n", analysisResult.numDroppedFrames );
- printf(" dropped frames at: %10.3f\n", analysisResult.droppedFramesPosition );
+ printf("\n=== Pop Analysis ===================\n");
+ printf(" expected actual\n");
+ printf(" latency: %10.3f %10.3f\n", (double)latencyFrames, analysisResult.latency );
+ printf(" popPosition: %10.3f %10.3f\n", (double)popPosition, analysisResult.popPosition );
+ printf(" popAmplitude: %10.3f %10.3f\n", popAmplitude, analysisResult.popAmplitude );
+ printf(" cycleSize: %6d\n", cycleSize );
+ printf(" num added frames: %10.3f\n", analysisResult.numAddedFrames );
+ printf(" added frames at: %10.3f\n", analysisResult.addedFramesPosition );
+ printf(" num dropped frames: %10.3f\n", analysisResult.numDroppedFrames );
+ printf(" dropped frames at: %10.3f\n", analysisResult.droppedFramesPosition );
#endif
-
- QA_ASSERT_CLOSE( "PaQa_AnalyseRecording latency", latencyFrames, analysisResult.latency, 0.5 );
- QA_ASSERT_CLOSE( "PaQa_AnalyseRecording popPosition", popPosition, analysisResult.popPosition, 10 );
- if( popWidth > 0 )
- {
- QA_ASSERT_CLOSE( "PaQa_AnalyseRecording popAmplitude", popAmplitude, analysisResult.popAmplitude, 0.1 * popAmplitude );
- }
-
- PaQa_TerminateRecording( &recording );
- return 0;
-
+
+ QA_ASSERT_CLOSE( "PaQa_AnalyseRecording latency", latencyFrames, analysisResult.latency, 0.5 );
+ QA_ASSERT_CLOSE( "PaQa_AnalyseRecording popPosition", popPosition, analysisResult.popPosition, 10 );
+ if( popWidth > 0 )
+ {
+ QA_ASSERT_CLOSE( "PaQa_AnalyseRecording popAmplitude", popAmplitude, analysisResult.popAmplitude, 0.1 * popAmplitude );
+ }
+
+ PaQa_TerminateRecording( &recording );
+ return 0;
+
error:
- PaQa_SaveRecordingToWaveFile( &recording, "bad_recording.wav" );
- PaQa_TerminateRecording( &recording);
- return 1;
-}
+ PaQa_SaveRecordingToWaveFile( &recording, "bad_recording.wav" );
+ PaQa_TerminateRecording( &recording);
+ return 1;
+}
/*==========================================================================================*/
/**
*/
static int TestSingleInitialSpike( double sampleRate, int stepPosition, int cycleSize, int latencyFrames, double stepAmplitude )
{
- int i;
- int result = 0;
- // Account for highpass filter offset.
- int expectedLatency = latencyFrames + 1;
- PaQaRecording recording;
-
- PaQaRecording hipassOutput = { 0 };
- BiquadFilter hipassFilter;
-
- PaQaTestTone testTone;
- PaQaAnalysisResult analysisResult = { 0.0 };
- int maxFrames = ((int)sampleRate) * 2;
-
- testTone.samplesPerFrame = 1;
- testTone.sampleRate = sampleRate;
- testTone.frequency = sampleRate / cycleSize;
- testTone.amplitude = -0.5;
- testTone.startDelay = latencyFrames;
-
- result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate );
- QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
-
- result = PaQa_InitializeRecording( &hipassOutput, maxFrames, (int) sampleRate );
- QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
-
- MakeCleanRecording( &recording, &testTone );
-
- // Apply DC step.
- for( i=stepPosition; i<recording.numFrames; i++ )
- {
- recording.buffer[i] += stepAmplitude;
- }
-
- // Use high pass as a DC blocker!
- BiquadFilter_SetupHighPass( &hipassFilter, 10.0 / sampleRate, 0.5 );
- PaQa_FilterRecording( &recording, &hipassOutput, &hipassFilter );
-
- testTone.amplitude = 0.5;
- PaQa_AnalyseRecording( &hipassOutput, &testTone, &analysisResult );
-
+ int i;
+ int result = 0;
+ // Account for highpass filter offset.
+ int expectedLatency = latencyFrames + 1;
+ PaQaRecording recording;
+
+ PaQaRecording hipassOutput = { 0 };
+ BiquadFilter hipassFilter;
+
+ PaQaTestTone testTone;
+ PaQaAnalysisResult analysisResult = { 0.0 };
+ int maxFrames = ((int)sampleRate) * 2;
+
+ testTone.samplesPerFrame = 1;
+ testTone.sampleRate = sampleRate;
+ testTone.frequency = sampleRate / cycleSize;
+ testTone.amplitude = -0.5;
+ testTone.startDelay = latencyFrames;
+
+ result = PaQa_InitializeRecording( &recording, maxFrames, (int) sampleRate );
+ QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
+
+ result = PaQa_InitializeRecording( &hipassOutput, maxFrames, (int) sampleRate );
+ QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
+
+ MakeCleanRecording( &recording, &testTone );
+
+ // Apply DC step.
+ for( i=stepPosition; i<recording.numFrames; i++ )
+ {
+ recording.buffer[i] += stepAmplitude;
+ }
+
+ // Use high pass as a DC blocker!
+ BiquadFilter_SetupHighPass( &hipassFilter, 10.0 / sampleRate, 0.5 );
+ PaQa_FilterRecording( &recording, &hipassOutput, &hipassFilter );
+
+ testTone.amplitude = 0.5;
+ PaQa_AnalyseRecording( &hipassOutput, &testTone, &analysisResult );
+
#if PRINT_REPORTS
- printf("\n=== InitialSpike Analysis ===================\n");
- printf(" expected actual\n");
- printf(" latency: %10.3f %10.3f\n", (double)expectedLatency, analysisResult.latency );
- printf(" popPosition: %10.3f\n", analysisResult.popPosition );
- printf(" popAmplitude: %10.3f\n", analysisResult.popAmplitude );
- printf(" amplitudeRatio: %10.3f\n", analysisResult.amplitudeRatio );
- printf(" cycleSize: %6d\n", cycleSize );
- printf(" num added frames: %10.3f\n", analysisResult.numAddedFrames );
- printf(" added frames at: %10.3f\n", analysisResult.addedFramesPosition );
- printf(" num dropped frames: %10.3f\n", analysisResult.numDroppedFrames );
- printf(" dropped frames at: %10.3f\n", analysisResult.droppedFramesPosition );
+ printf("\n=== InitialSpike Analysis ===================\n");
+ printf(" expected actual\n");
+ printf(" latency: %10.3f %10.3f\n", (double)expectedLatency, analysisResult.latency );
+ printf(" popPosition: %10.3f\n", analysisResult.popPosition );
+ printf(" popAmplitude: %10.3f\n", analysisResult.popAmplitude );
+ printf(" amplitudeRatio: %10.3f\n", analysisResult.amplitudeRatio );
+ printf(" cycleSize: %6d\n", cycleSize );
+ printf(" num added frames: %10.3f\n", analysisResult.numAddedFrames );
+ printf(" added frames at: %10.3f\n", analysisResult.addedFramesPosition );
+ printf(" num dropped frames: %10.3f\n", analysisResult.numDroppedFrames );
+ printf(" dropped frames at: %10.3f\n", analysisResult.droppedFramesPosition );
#endif
-
- QA_ASSERT_CLOSE( "PaQa_AnalyseRecording latency", expectedLatency, analysisResult.latency, 4.0 );
- QA_ASSERT_EQUALS( "PaQa_AnalyseRecording no pop from step", -1, (int) analysisResult.popPosition );
- PaQa_TerminateRecording( &recording );
- PaQa_TerminateRecording( &hipassOutput );
- return 0;
-
+
+ QA_ASSERT_CLOSE( "PaQa_AnalyseRecording latency", expectedLatency, analysisResult.latency, 4.0 );
+ QA_ASSERT_EQUALS( "PaQa_AnalyseRecording no pop from step", -1, (int) analysisResult.popPosition );
+ PaQa_TerminateRecording( &recording );
+ PaQa_TerminateRecording( &hipassOutput );
+ return 0;
+
error:
- PaQa_SaveRecordingToWaveFile( &recording, "bad_step_original.wav" );
- PaQa_SaveRecordingToWaveFile( &hipassOutput, "bad_step_hipass.wav" );
- PaQa_TerminateRecording( &recording);
- PaQa_TerminateRecording( &hipassOutput );
- return 1;
-}
+ PaQa_SaveRecordingToWaveFile( &recording, "bad_step_original.wav" );
+ PaQa_SaveRecordingToWaveFile( &hipassOutput, "bad_step_hipass.wav" );
+ PaQa_TerminateRecording( &recording);
+ PaQa_TerminateRecording( &hipassOutput );
+ return 1;
+}
/*==========================================================================================*/
/**
*/
static int TestDetectPops( void )
{
- int result;
-
- // No pop.
- result = TestDetectSinglePop( 44100, 200, 477, -1, 0, 0.0 );
- if( result < 0 ) return result;
-
- // short pop
- result = TestDetectSinglePop( 44100, 300, 810, 3987, 1, 0.5 );
- if( result < 0 ) return result;
-
- // medium long pop
- result = TestDetectSinglePop( 44100, 300, 810, 9876, 5, 0.5 );
- if( result < 0 ) return result;
-
- // short tiny pop
- result = TestDetectSinglePop( 44100, 250, 810, 5672, 1, 0.05 );
- if( result < 0 ) return result;
-
-
- return 0;
+ int result;
+
+ // No pop.
+ result = TestDetectSinglePop( 44100, 200, 477, -1, 0, 0.0 );
+ if( result < 0 ) return result;
+
+ // short pop
+ result = TestDetectSinglePop( 44100, 300, 810, 3987, 1, 0.5 );
+ if( result < 0 ) return result;
+
+ // medium long pop
+ result = TestDetectSinglePop( 44100, 300, 810, 9876, 5, 0.5 );
+ if( result < 0 ) return result;
+
+ // short tiny pop
+ result = TestDetectSinglePop( 44100, 250, 810, 5672, 1, 0.05 );
+ if( result < 0 ) return result;
+
+
+ return 0;
}
/*==========================================================================================*/
*/
static int TestInitialSpike( void )
{
- int result;
-
+ int result;
+
//( double sampleRate, int stepPosition, int cycleSize, int latencyFrames, double stepAmplitude )
- // No spike.
- result = TestSingleInitialSpike( 44100, 32, 100, 537, 0.0 );
- if( result < 0 ) return result;
-
- // Small spike.
- result = TestSingleInitialSpike( 44100, 32, 100, 537, 0.1 );
- if( result < 0 ) return result;
-
- // short pop like Ross's error.
- result = TestSingleInitialSpike( 8000, 32, 42, 2000, 0.1 );
- if( result < 0 ) return result;
-
- // Medium spike.
- result = TestSingleInitialSpike( 44100, 40, 190, 3000, 0.5 );
- if( result < 0 ) return result;
-
- // Spike near sine.
- //result = TestSingleInitialSpike( 44100, 2900, 140, 3000, 0.1 );
- if( result < 0 ) return result;
-
-
- return 0;
+ // No spike.
+ result = TestSingleInitialSpike( 44100, 32, 100, 537, 0.0 );
+ if( result < 0 ) return result;
+
+ // Small spike.
+ result = TestSingleInitialSpike( 44100, 32, 100, 537, 0.1 );
+ if( result < 0 ) return result;
+
+ // short pop like Ross's error.
+ result = TestSingleInitialSpike( 8000, 32, 42, 2000, 0.1 );
+ if( result < 0 ) return result;
+
+ // Medium spike.
+ result = TestSingleInitialSpike( 44100, 40, 190, 3000, 0.5 );
+ if( result < 0 ) return result;
+
+ // Spike near sine.
+ //result = TestSingleInitialSpike( 44100, 2900, 140, 3000, 0.1 );
+ if( result < 0 ) return result;
+
+
+ return 0;
}
#define NUM_SAMPLES (200)
short data[NUM_SAMPLES];
short saw = 0;
-
-
+
+
result = Audio_WAV_OpenWriter( &writer, "test_sawtooth.wav", 44100, 1 );
if( result < 0 ) goto error;
-
+
for( i=0; i<15; i++ )
{
- for( j=0; j<NUM_SAMPLES; j++ )
- {
- data[j] = saw;
- saw += 293;
- }
+ for( j=0; j<NUM_SAMPLES; j++ )
+ {
+ data[j] = saw;
+ saw += 293;
+ }
result = Audio_WAV_WriteShorts( &writer, data, NUM_SAMPLES );
if( result < 0 ) goto error;
}
-
+
result = Audio_WAV_CloseWriter( &writer );
if( result < 0 ) goto error;
-
-
+
+
return 0;
-
+
error:
printf("ERROR: result = %d\n", result );
return result;
*/
void PaQa_FillWithSine( PaQaRecording *recording, double sampleRate, double freq, double amp )
{
- PaQaSineGenerator generator;
- float buffer[FRAMES_PER_BLOCK];
- int samplesPerFrame = 1;
- int stride = 1;
- int done = 0;
-
- // Setup a sine oscillator.
- PaQa_SetupSineGenerator( &generator, freq, amp, sampleRate );
-
- done = 0;
- while (!done)
- {
- PaQa_EraseBuffer( buffer, FRAMES_PER_BLOCK, samplesPerFrame );
- PaQa_MixSine( &generator, buffer, FRAMES_PER_BLOCK, stride );
- done = PaQa_WriteRecording( recording, buffer, FRAMES_PER_BLOCK, samplesPerFrame );
- }
-
+ PaQaSineGenerator generator;
+ float buffer[FRAMES_PER_BLOCK];
+ int samplesPerFrame = 1;
+ int stride = 1;
+ int done = 0;
+
+ // Setup a sine oscillator.
+ PaQa_SetupSineGenerator( &generator, freq, amp, sampleRate );
+
+ done = 0;
+ while (!done)
+ {
+ PaQa_EraseBuffer( buffer, FRAMES_PER_BLOCK, samplesPerFrame );
+ PaQa_MixSine( &generator, buffer, FRAMES_PER_BLOCK, stride );
+ done = PaQa_WriteRecording( recording, buffer, FRAMES_PER_BLOCK, samplesPerFrame );
+ }
+
}
/*==========================================================================================*/
*/
static int TestNotchFilter( void )
{
- int result = 0;
- PaQaRecording original = { 0 };
- PaQaRecording filtered = { 0 };
- BiquadFilter notchFilter;
- double sampleRate = 44100.0;
- int maxFrames = ((int)sampleRate) * 1;
-
- double freq = 234.5;
- double amp = 0.5;
-
+ int result = 0;
+ PaQaRecording original = { 0 };
+ PaQaRecording filtered = { 0 };
+ BiquadFilter notchFilter;
+ double sampleRate = 44100.0;
+ int maxFrames = ((int)sampleRate) * 1;
+
+ double freq = 234.5;
+ double amp = 0.5;
+
double mag1, mag2, mag3;
- result = PaQa_InitializeRecording( &original, maxFrames, (int) sampleRate );
- QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
-
- PaQa_FillWithSine( &original, sampleRate, freq, amp );
-
- //result = PaQa_SaveRecordingToWaveFile( &original, "original.wav" );
- //QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result );
+ result = PaQa_InitializeRecording( &original, maxFrames, (int) sampleRate );
+ QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
+
+ PaQa_FillWithSine( &original, sampleRate, freq, amp );
+
+ //result = PaQa_SaveRecordingToWaveFile( &original, "original.wav" );
+ //QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result );
mag1 = PaQa_CorrelateSine( &original, freq, sampleRate, 0, original.numFrames, NULL );
- QA_ASSERT_CLOSE( "exact frequency match", amp, mag1, 0.01 );
-
- // Filter with exact frequency.
- result = PaQa_InitializeRecording( &filtered, maxFrames, (int) sampleRate );
- QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
-
- BiquadFilter_SetupNotch( ¬chFilter, freq / sampleRate, 0.5 );
- PaQa_FilterRecording( &original, &filtered, ¬chFilter );
- result = PaQa_SaveRecordingToWaveFile( &filtered, "filtered1.wav" );
- QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result );
-
- mag2 = PaQa_CorrelateSine( &filtered, freq, sampleRate, 0, filtered.numFrames, NULL );
- QA_ASSERT_CLOSE( "should eliminate tone", 0.0, mag2, 0.01 );
-
- // Filter with mismatched frequency.
- BiquadFilter_SetupNotch( ¬chFilter, 1.07 * freq / sampleRate, 2.0 );
- PaQa_FilterRecording( &original, &filtered, ¬chFilter );
-
- //result = PaQa_SaveRecordingToWaveFile( &filtered, "badfiltered.wav" );
- //QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result );
-
- mag3 = PaQa_CorrelateSine( &filtered, freq, sampleRate, 0, filtered.numFrames, NULL );
- QA_ASSERT_CLOSE( "should eliminate tone", amp*0.26, mag3, 0.01 );
-
-
- PaQa_TerminateRecording( &original );
- PaQa_TerminateRecording( &filtered );
- return 0;
-
+ QA_ASSERT_CLOSE( "exact frequency match", amp, mag1, 0.01 );
+
+ // Filter with exact frequency.
+ result = PaQa_InitializeRecording( &filtered, maxFrames, (int) sampleRate );
+ QA_ASSERT_EQUALS( "PaQa_InitializeRecording failed", 0, result );
+
+ BiquadFilter_SetupNotch( ¬chFilter, freq / sampleRate, 0.5 );
+ PaQa_FilterRecording( &original, &filtered, ¬chFilter );
+ result = PaQa_SaveRecordingToWaveFile( &filtered, "filtered1.wav" );
+ QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result );
+
+ mag2 = PaQa_CorrelateSine( &filtered, freq, sampleRate, 0, filtered.numFrames, NULL );
+ QA_ASSERT_CLOSE( "should eliminate tone", 0.0, mag2, 0.01 );
+
+ // Filter with mismatched frequency.
+ BiquadFilter_SetupNotch( ¬chFilter, 1.07 * freq / sampleRate, 2.0 );
+ PaQa_FilterRecording( &original, &filtered, ¬chFilter );
+
+ //result = PaQa_SaveRecordingToWaveFile( &filtered, "badfiltered.wav" );
+ //QA_ASSERT_EQUALS( "PaQa_SaveRecordingToWaveFile failed", 0, result );
+
+ mag3 = PaQa_CorrelateSine( &filtered, freq, sampleRate, 0, filtered.numFrames, NULL );
+ QA_ASSERT_CLOSE( "should eliminate tone", amp*0.26, mag3, 0.01 );
+
+
+ PaQa_TerminateRecording( &original );
+ PaQa_TerminateRecording( &filtered );
+ return 0;
+
error:
- PaQa_TerminateRecording( &original);
- PaQa_TerminateRecording( &filtered );
- return 1;
-
+ PaQa_TerminateRecording( &original);
+ PaQa_TerminateRecording( &filtered );
+ return 1;
+
}
/*==========================================================================================*/
/**
- */
+ */
int PaQa_TestAnalyzer( void )
{
- int result;
-
+ int result;
+
#if TEST_SAVED_WAVE
- // Write a simple wave file.
- if ((result = TestSavedWave()) != 0) return result;
+ // Write a simple wave file.
+ if ((result = TestSavedWave()) != 0) return result;
#endif /* TEST_SAVED_WAVE */
-
- // Generate single tone and verify presence.
- if ((result = TestSingleMonoTone()) != 0) return result;
-
- // Generate prime series of tones and verify presence.
- if ((result = TestMixedMonoTones()) != 0) return result;
-
- // Detect dropped or added samples in a sine wave recording.
- if ((result = TestDetectPhaseErrors()) != 0) return result;
-
- // Test to see if notch filter can knock out the test tone.
- if ((result = TestNotchFilter()) != 0) return result;
-
- // Detect pops that get back in phase.
- if ((result = TestDetectPops()) != 0) return result;
-
- // Test to see if the latency detector can be tricked like it was on Ross' Windows machine.
- if ((result = TestInitialSpike()) != 0) return result;
-
-
- return 0;
+
+ // Generate single tone and verify presence.
+ if ((result = TestSingleMonoTone()) != 0) return result;
+
+ // Generate prime series of tones and verify presence.
+ if ((result = TestMixedMonoTones()) != 0) return result;
+
+ // Detect dropped or added samples in a sine wave recording.
+ if ((result = TestDetectPhaseErrors()) != 0) return result;
+
+ // Test to see if notch filter can knock out the test tone.
+ if ((result = TestNotchFilter()) != 0) return result;
+
+ // Detect pops that get back in phase.
+ if ((result = TestDetectPops()) != 0) return result;
+
+ // Test to see if the latency detector can be tricked like it was on Ross' Windows machine.
+ if ((result = TestInitialSpike()) != 0) return result;
+
+
+ return 0;
}
*/
/*
- * The text above constitutes the entire PortAudio license; however,
+ * The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
* license above.
*/
*/
/*
- * The text above constitutes the entire PortAudio license; however,
+ * The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
* license above.
*/
/* Write long word data to a little endian format byte array. */
static void WriteLongLE( unsigned char **addrPtr, unsigned long data )
{
- unsigned char *addr = *addrPtr;
- *addr++ = (unsigned char) data;
- *addr++ = (unsigned char) (data>>8);
- *addr++ = (unsigned char) (data>>16);
- *addr++ = (unsigned char) (data>>24);
- *addrPtr = addr;
+ unsigned char *addr = *addrPtr;
+ *addr++ = (unsigned char) data;
+ *addr++ = (unsigned char) (data>>8);
+ *addr++ = (unsigned char) (data>>16);
+ *addr++ = (unsigned char) (data>>24);
+ *addrPtr = addr;
}
/* Write short word data to a little endian format byte array. */
static void WriteShortLE( unsigned char **addrPtr, unsigned short data )
{
- unsigned char *addr = *addrPtr;
- *addr++ = (unsigned char) data;
- *addr++ = (unsigned char) (data>>8);
- *addrPtr = addr;
+ unsigned char *addr = *addrPtr;
+ *addr++ = (unsigned char) data;
+ *addr++ = (unsigned char) (data>>8);
+ *addrPtr = addr;
}
/* Write IFF ChunkType data to a byte array. */
static void WriteChunkType( unsigned char **addrPtr, unsigned long cktyp )
{
- unsigned char *addr = *addrPtr;
- *addr++ = (unsigned char) (cktyp>>24);
- *addr++ = (unsigned char) (cktyp>>16);
- *addr++ = (unsigned char) (cktyp>>8);
- *addr++ = (unsigned char) cktyp;
- *addrPtr = addr;
+ unsigned char *addr = *addrPtr;
+ *addr++ = (unsigned char) (cktyp>>24);
+ *addr++ = (unsigned char) (cktyp>>16);
+ *addr++ = (unsigned char) (cktyp>>8);
+ *addr++ = (unsigned char) cktyp;
+ *addrPtr = addr;
}
#define WAV_HEADER_SIZE (4 + 4 + 4 + /* RIFF+size+WAVE */ \
*/
long Audio_WAV_OpenWriter( WAV_Writer *writer, const char *fileName, int frameRate, int samplesPerFrame )
{
- unsigned int bytesPerSecond;
+ unsigned int bytesPerSecond;
unsigned char header[ WAV_HEADER_SIZE ];
- unsigned char *addr = header;
+ unsigned char *addr = header;
int numWritten;
-
+
writer->dataSize = 0;
writer->dataSizeOffset = 0;
-
+
writer->fid = fopen( fileName, "wb" );
if( writer->fid == NULL )
{
}
/* Write RIFF header. */
- WriteChunkType( &addr, RIFF_ID );
+ WriteChunkType( &addr, RIFF_ID );
/* Write RIFF size as zero for now. Will patch later. */
- WriteLongLE( &addr, 0 );
+ WriteLongLE( &addr, 0 );
/* Write WAVE form ID. */
- WriteChunkType( &addr, WAVE_ID );
+ WriteChunkType( &addr, WAVE_ID );
/* Write format chunk based on AudioSample structure. */
- WriteChunkType( &addr, FMT_ID );
+ WriteChunkType( &addr, FMT_ID );
WriteLongLE( &addr, 16 );
WriteShortLE( &addr, WAVE_FORMAT_PCM );
- bytesPerSecond = frameRate * samplesPerFrame * sizeof( short);
- WriteShortLE( &addr, (short) samplesPerFrame );
- WriteLongLE( &addr, frameRate );
- WriteLongLE( &addr, bytesPerSecond );
- WriteShortLE( &addr, (short) (samplesPerFrame * sizeof( short)) ); /* bytesPerBlock */
- WriteShortLE( &addr, (short) 16 ); /* bits per sample */
+ bytesPerSecond = frameRate * samplesPerFrame * sizeof( short);
+ WriteShortLE( &addr, (short) samplesPerFrame );
+ WriteLongLE( &addr, frameRate );
+ WriteLongLE( &addr, bytesPerSecond );
+ WriteShortLE( &addr, (short) (samplesPerFrame * sizeof( short)) ); /* bytesPerBlock */
+ WriteShortLE( &addr, (short) 16 ); /* bits per sample */
/* Write ID and size for 'data' chunk. */
- WriteChunkType( &addr, DATA_ID );
+ WriteChunkType( &addr, DATA_ID );
/* Save offset so we can patch it later. */
writer->dataSizeOffset = (int) (addr - header);
- WriteLongLE( &addr, 0 );
+ WriteLongLE( &addr, 0 );
numWritten = fwrite( header, 1, sizeof(header), writer->fid );
if( numWritten != sizeof(header) ) return -1;
- return (int) numWritten;
+ return (int) numWritten;
}
/*********************************************************************************
* Returns bytes written or negative error code.
*/
long Audio_WAV_WriteShorts( WAV_Writer *writer,
- short *samples,
- int numSamples
- )
+ short *samples,
+ int numSamples
+ )
{
- unsigned char buffer[2];
+ unsigned char buffer[2];
unsigned char *bufferPtr;
- int i;
- short *p = samples;
+ int i;
+ short *p = samples;
int numWritten;
int bytesWritten;
- if( numSamples <= 0 )
- {
- return -1;
- }
+ if( numSamples <= 0 )
+ {
+ return -1;
+ }
for( i=0; i<numSamples; i++ )
- {
+ {
bufferPtr = buffer;
- WriteShortLE( &bufferPtr, *p++ );
+ WriteShortLE( &bufferPtr, *p++ );
numWritten = fwrite( buffer, 1, sizeof( buffer), writer->fid );
if( numWritten != sizeof(buffer) ) return -1;
- }
+ }
bytesWritten = numSamples * sizeof(short);
writer->dataSize += bytesWritten;
- return (int) bytesWritten;
+ return (int) bytesWritten;
}
/*********************************************************************************
*/
long Audio_WAV_CloseWriter( WAV_Writer *writer )
{
- unsigned char buffer[4];
+ unsigned char buffer[4];
unsigned char *bufferPtr;
int numWritten;
int riffSize;
#define NUM_SAMPLES (200)
short data[NUM_SAMPLES];
short saw = 0;
-
+
for( i=0; i<NUM_SAMPLES; i++ )
{
data[i] = saw;
*/
/*
- * The text above constitutes the entire PortAudio license; however,
+ * The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
* license above.
*/
#ifndef _WAV_WRITER_H
#define WAVE_FORMAT_PCM (1)
#define WAVE_FORMAT_IMA_ADPCM (0x0011)
-
+
typedef struct WAV_Writer_s
{
FILE *fid;
* Returns bytes written or negative error code.
*/
long Audio_WAV_WriteShorts( WAV_Writer *writer,
- short *samples,
- int numSamples
- );
+ short *samples,
+ int numSamples
+ );
/*********************************************************************************
* Close WAV file.
} \
else { \
printf("ERROR - 0x%x - %s for %s\n", result, \
- ((result == 0) ? "-" : Pa_GetErrorText(result)), \
- #_exp ); \
+ ((result == 0) ? "-" : Pa_GetErrorText(result)), \
+ #_exp ); \
gNumFailed++; \
goto error; \
} \
}
else
{
- ipp = NULL;
+ ipp = NULL;
}
if( mode == MODE_OUTPUT )
/** @file paqa_errs.c
- @ingroup qa_src
- @brief Self Testing Quality Assurance app for PortAudio
- Do lots of bad things to test error reporting.
- @author Phil Burk http://www.softsynth.com
+ @ingroup qa_src
+ @brief Self Testing Quality Assurance app for PortAudio
+ Do lots of bad things to test error reporting.
+ @author Phil Burk http://www.softsynth.com
Pieter Suurmond adapted to V19 API.
*/
/*
*/
/*
- * The text above constitutes the entire PortAudio license; however,
+ * The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
* license above.
*/
-
+
#include <stdio.h>
#include <math.h>
static int QaCallback( const void* inputBuffer,
void* outputBuffer,
unsigned long framesPerBuffer,
- const PaStreamCallbackTimeInfo* timeInfo,
- PaStreamCallbackFlags statusFlags,
+ const PaStreamCallbackTimeInfo* timeInfo,
+ PaStreamCallbackFlags statusFlags,
void* userData )
{
unsigned long i;
unsigned char* out = (unsigned char *) outputBuffer;
PaQaData* data = (PaQaData *) userData;
-
+
(void)inputBuffer; /* Prevent "unused variable" warnings. */
/* Zero out buffer so we don't hear terrible noise. */
PaStreamParameters ipp, opp;
const PaDeviceInfo* info = NULL;
-
+
/* Setup data for synthesis thread. */
myData.framesLeft = (unsigned long) (SAMPLE_RATE * 100); /* 100 seconds */
myData.numChannels = 1;
ipp.hostApiSpecificStreamInfo = opp.hostApiSpecificStreamInfo = NULL;
ipp.sampleFormat = opp.sampleFormat = paFloat32;
ipp.channelCount = 0; ipp.device = Pa_GetDefaultInputDevice();
- opp.channelCount = 0; opp.device = paNoDevice; /* And no output device, and no output channels. */
+ opp.channelCount = 0; opp.device = paNoDevice; /* And no output device, and no output channels. */
HOPEFOR(((result = Pa_OpenStream(&stream, &ipp, NULL,
SAMPLE_RATE, FRAMES_PER_BUFFER,
paClipOff, QaCallback, &myData )) == paInvalidChannelCount));
HOPEFOR(((result = Pa_OpenStream(&stream, NULL, &opp,
1.0, FRAMES_PER_BUFFER, /* 1 cycle per second (1 Hz) is too low. */
paClipOff, QaCallback, &myData )) == paInvalidSampleRate));
-
+
/*----------------------------- High sample rate: */
ipp.hostApiSpecificStreamInfo = opp.hostApiSpecificStreamInfo = NULL;
ipp.sampleFormat = opp.sampleFormat = paFloat32;
/*----------------------------- NULL callback: */
/* NULL callback is valid in V19 -- it means use blocking read/write stream
-
+
ipp.hostApiSpecificStreamInfo = opp.hostApiSpecificStreamInfo = NULL;
ipp.sampleFormat = opp.sampleFormat = paFloat32;
ipp.channelCount = 0; ipp.device = paNoDevice;
SAMPLE_RATE, FRAMES_PER_BUFFER,
paClipOff, QaCallback, &myData )) == paNoError));
}
-
+
HOPEFOR(((deviceInfo = Pa_GetDeviceInfo(paNoDevice)) == NULL));
HOPEFOR(((deviceInfo = Pa_GetDeviceInfo(87654)) == NULL));
HOPEFOR(((result = Pa_StartStream(NULL)) == paBadStreamPtr));
int main(void)
{
PaError result;
-
+
EXPECT(((result = Pa_Initialize()) == paNoError));
TestBadOpens();
TestBadActions();
/** @file paqa_latency.c
- @ingroup qa_src
- @brief Test latency estimates.
- @author Ross Bencina <rossb@audiomulch.com>
+ @ingroup qa_src
+ @brief Test latency estimates.
+ @author Ross Bencina <rossb@audiomulch.com>
@author Phil Burk <philburk@softsynth.com>
*/
/*
*/
/*
- * The text above constitutes the entire PortAudio license; however,
+ * The text above constitutes the entire PortAudio license; however,
* the PortAudio community also makes the following non-binding requests:
*
* Any person wishing to distribute modifications to the Software is
* requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
* license above.
*/
#include <stdio.h>
(void) timeInfo; /* Prevent unused variable warnings. */
(void) statusFlags;
(void) inputBuffer;
-
+
if( data->minFramesPerBuffer > framesPerBuffer )
{
data->minFramesPerBuffer = framesPerBuffer;
{
data->maxFramesPerBuffer = framesPerBuffer;
}
-
+
/* Measure min and max output time stamp delta. */
if( data->callbackCount > 0 )
{
}
}
data->previousTimeInfo = *timeInfo;
-
+
for( i=0; i<framesPerBuffer; i++ )
{
*out++ = data->sine[data->left_phase]; /* left */
data->right_phase += 3; /* higher pitch so we can distinguish left and right. */
if( data->right_phase >= TABLE_SIZE ) data->right_phase -= TABLE_SIZE;
}
-
+
data->callbackCount += 1;
return paContinue;
}
-PaError paqaCheckLatency( PaStreamParameters *outputParamsPtr,
+PaError paqaCheckLatency( PaStreamParameters *outputParamsPtr,
paTestData *dataPtr, double sampleRate, unsigned long framesPerBuffer )
{
PaError err;
dataPtr->minDeltaDacTime = 9999999.0;
dataPtr->maxDeltaDacTime = 0.0;
dataPtr->callbackCount = 0;
-
+
printf("Stream parameter: suggestedOutputLatency = %g\n", outputParamsPtr->suggestedLatency );
if( framesPerBuffer == paFramesPerBufferUnspecified ){
printf("Stream parameter: user framesPerBuffer = paFramesPerBufferUnspecified\n" );
patestCallback,
dataPtr );
if( err != paNoError ) goto error1;
-
+
streamInfo = Pa_GetStreamInfo( stream );
printf("Stream info: inputLatency = %g\n", streamInfo->inputLatency );
printf("Stream info: outputLatency = %g\n", streamInfo->outputLatency );
printf("Play for %d seconds.\n", NUM_SECONDS );
Pa_Sleep( NUM_SECONDS * 1000 );
-
+
printf(" minFramesPerBuffer = %4d\n", dataPtr->minFramesPerBuffer );
printf(" maxFramesPerBuffer = %4d\n", dataPtr->maxFramesPerBuffer );
printf(" minDeltaDacTime = %f\n", dataPtr->minDeltaDacTime );
err = Pa_CloseStream( stream );
Pa_Sleep( 1 * 1000 );
-
+
printf("-------------------------------------\n");
return err;
error2:
streamParameters.hostApiSpecificStreamInfo = NULL;
streamParameters.sampleFormat = paFloat32;
sampleRate = pdi->defaultSampleRate;
-
+
printf(" lowLatency = %g\n", lowLatency );
printf(" highLatency = %g\n", highLatency );
printf(" numChannels = %d\n", numChannels );
printf(" sampleRate = %g\n", sampleRate );
-
+
if( (highLatency - lowLatency) < 0.001 )
{
numLoops = 1;
}
for( i=0; i<numLoops; i++ )
- {
+ {
if( numLoops == 1 )
streamParameters.suggestedLatency = lowLatency;
else
streamParameters.suggestedLatency = lowLatency + ((highLatency - lowLatency) * i /(numLoops - 1));
-
+
printf(" suggestedLatency[%d] = %6.4f\n", i, streamParameters.suggestedLatency );
-
+
err = Pa_OpenStream(
&stream,
(isInput ? &streamParameters : NULL),
paqaNoopCallback,
NULL );
if( err != paNoError ) goto error;
-
+
streamInfo = Pa_GetStreamInfo( stream );
-
+
err = Pa_CloseStream( stream );
-
+
if( isInput )
{
finalLatency = streamInfo->inputLatency;
int result = 0;
const PaDeviceInfo *pdi;
int numDevices = Pa_GetDeviceCount();
-
+
printf("\n ------------------------ paqaVerifySuggestedLatency\n");
for( id=0; id<numDevices; id++ ) /* Iterate through all devices. */
{
PaDeviceIndex id;
const PaDeviceInfo *pdi;
int numDevices = Pa_GetDeviceCount();
-
+
printf("\n ------------------------ paqaVerifyDeviceInfoLatency\n");
for( id=0; id<numDevices; id++ ) /* Iterate through all devices. */
{
int i;
int framesPerBuffer;
double sampleRate = SAMPLE_RATE;
-
+
printf("\nPortAudio QA: investigate output latency.\n");
/* initialise sinusoidal wavetable */
data.sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
}
data.left_phase = data.right_phase = 0;
-
+
err = Pa_Initialize();
if( err != paNoError ) goto error;
-
+
/* Run self tests. */
if( paqaVerifyDeviceInfoLatency() < 0 ) goto error;
-
+
if( paqaVerifySuggestedLatency() < 0 ) goto error;
-
+
outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
if (outputParameters.device == paNoDevice) {
- fprintf(stderr,"Error: No default output device.\n");
- goto error;
+ fprintf(stderr,"Error: No default output device.\n");
+ goto error;
}
printf("\n\nNow running Audio Output Tests...\n");
outputParameters.suggestedLatency = deviceInfo->defaultLowOutputLatency;
err = paqaCheckLatency( &outputParameters, &data, sampleRate, framesPerBuffer );
if( err != paNoError ) goto error;
-
+
printf("------------- 64 frame buffer with 1.1 * defaultLow latency.\n");
framesPerBuffer = 64;
outputParameters.suggestedLatency = deviceInfo->defaultLowOutputLatency * 1.1;
err = paqaCheckLatency( &outputParameters, &data, sampleRate, framesPerBuffer );
if( err != paNoError ) goto error;
-
+
// Try to create a huge buffer that is bigger than the allowed device maximum.
printf("------------- Try a huge buffer.\n");
framesPerBuffer = 16*1024;
outputParameters.suggestedLatency = ((double)framesPerBuffer) / sampleRate; // approximate
err = paqaCheckLatency( &outputParameters, &data, sampleRate, framesPerBuffer );
if( err != paNoError ) goto error;
-
+
printf("------------- Try suggestedLatency = 0.0\n");
outputParameters.suggestedLatency = 0.0;
err = paqaCheckLatency( &outputParameters, &data, sampleRate, paFramesPerBufferUnspecified );
if( err != paNoError ) goto error;
-
+
printf("------------- Try suggestedLatency = defaultLowOutputLatency\n");
outputParameters.suggestedLatency = deviceInfo->defaultLowOutputLatency;
err = paqaCheckLatency( &outputParameters, &data, sampleRate, paFramesPerBufferUnspecified );
if( err != paNoError ) goto error;
-
+
printf("------------- Try suggestedLatency = defaultHighOutputLatency\n");
outputParameters.suggestedLatency = deviceInfo->defaultHighOutputLatency;
err = paqaCheckLatency( &outputParameters, &data, sampleRate, paFramesPerBufferUnspecified );
if( err != paNoError ) goto error;
-
+
printf("------------- Try suggestedLatency = defaultHighOutputLatency * 4\n");
outputParameters.suggestedLatency = deviceInfo->defaultHighOutputLatency * 4;
err = paqaCheckLatency( &outputParameters, &data, sampleRate, paFramesPerBufferUnspecified );
if( err != paNoError ) goto error;
-
+
Pa_Terminate();
printf("SUCCESS - test finished.\n");
return err;
-
+
error:
Pa_Terminate();
fprintf( stderr, "ERROR - test failed.\n" );
projects / portaudio / commitdiff