me/portaudio
Watch
1
0
Fork
You've already forked portaudio
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Implement the Float32 to UInt8 converters.

Browse source 
The loopback test now passes cleanly for the first time on my PreSonus FireStudio.
Added tests for clip and dither flag combinations to loopback.
This commit is contained in:
philburk 2011-09-01 22:08:32 +00:00
commit 9cdd56f5b4
4 changed files with 88 additions and 50 deletions
Download patch file Download diff file Expand all files Collapse all files

27
test/patest_sine8.c
View file

@ -52,8 +52,12 @@
#if TEST_UNSIGNED
#define TEST_FORMAT paUInt8
typedef unsigned char sample_t;
#define SILENCE ((sample_t)0x80)
#else
#define TEST_FORMAT paInt8
typedef char sample_t;
#define SILENCE ((sample_t)0x00)
#endif
#ifndef M_PI
@ -62,11 +66,7 @@
typedef struct
{
#if TEST_UNSIGNED
unsigned char sine[TABLE_SIZE];
#else
char sine[TABLE_SIZE];
#endif
sample_t sine[TABLE_SIZE];
int left_phase;
int right_phase;
unsigned int framesToGo;
@ -84,7 +84,7 @@ static int patestCallback( const void *inputBuffer, void *outputBuffer,
void *userData )
{
paTestData *data = (paTestData*)userData;
char *out = (char*)outputBuffer;
sample_t *out = (sample_t*)outputBuffer;
int i;
int framesToCalc;
int finished = 0;
@ -114,14 +114,8 @@ static int patestCallback( const void *inputBuffer, void *outputBuffer,
/* zero remainder of final buffer */
for( ; i<(int)framesPerBuffer; i++ )
{
#if TEST_UNSIGNED
*out++ = (unsigned char) 0x80; /* left */
*out++ = (unsigned char) 0x80; /* right */
#else
*out++ = 0; /* left */
*out++ = 0; /* right */
#endif
*out++ = SILENCE; /* left */
*out++ = SILENCE; /* right */
}
return finished;
}
@ -145,10 +139,7 @@ int main(void)
/* initialise sinusoidal wavetable */
for( i=0; i<TABLE_SIZE; i++ )
{
data.sine[i] = (char) (127.0 * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ));
#if TEST_UNSIGNED
data.sine[i] += (unsigned char) 0x80;
#endif
data.sine[i] = SILENCE + (char) (127.0 * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ));
}
data.left_phase = data.right_phase = 0;
data.framesToGo = totalSamps = NUM_SECONDS * SAMPLE_RATE; /* Play for a few seconds. */