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mme latency test: minor cleanups. randomised tone pitch

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This commit is contained in:
rossb 2011-07-28 04:40:42 +00:00
commit a6b18bb64c
1 changed files with 17 additions and 12 deletions
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29
test/patest_wmme_find_best_latency_params.c
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@ -111,7 +111,8 @@ static void printWindowsVersionInfo( FILE *fp )
if( osVersionInfoEx.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS ){
switch( osVersionInfoEx.dwMinorVersion ){
case 0: osName = "Windows 95"; break;
case 10: osName = "Windows 98"; break; // could also be SE (code I saw discriminated on osInfo.Version.Revision.ToString() == "2222A")
case 10: osName = "Windows 98"; break; // could also be 98SE (I've seen code discriminate based
// on osInfo.Version.Revision.ToString() == "2222A")
case 90: osName = "Windows Me"; break;
}
}else if( osVersionInfoEx.dwPlatformId == VER_PLATFORM_WIN32_NT ){
@ -205,7 +206,9 @@ static void printWindowsVersionInfo( FILE *fp )
fprintf( fp, "OS name and edition: %s %s\n", osName, osProductType );
fprintf( fp, "OS version: %d.%d.%d %S\n", osVersionInfoEx.dwMajorVersion, osVersionInfoEx.dwMinorVersion, osVersionInfoEx.dwBuildNumber, osVersionInfoEx.szCSDVersion );
fprintf( fp, "OS version: %d.%d.%d %S\n",
osVersionInfoEx.dwMajorVersion, osVersionInfoEx.dwMinorVersion,
osVersionInfoEx.dwBuildNumber, osVersionInfoEx.szCSDVersion );
fprintf( fp, "Processor architecture: %s\n", processorArchitecture );
fprintf( fp, "WoW64 process: %s\n", IsWow64() ? "Yes" : "No" );
}
@ -228,6 +231,7 @@ typedef struct
{
float sine[TABLE_SIZE];
double phase;
double phaseIncrement;
volatile int fadeIn;
volatile int fadeOut;
double amp;
@ -257,7 +261,7 @@ static int patestCallback( const void *inputBuffer, void *outputBuffer,
for( i=0; i<framesPerBuffer; i++ )
{
float x = data->sine[(int)data->phase];
data->phase += 20;
data->phase += data->phaseIncrement;
if( data->phase >= TABLE_SIZE ){
data->phase -= TABLE_SIZE;
}
@ -288,7 +292,8 @@ static int patestCallback( const void *inputBuffer, void *outputBuffer,
#define NO 0
static int playUntilKeyPress( int deviceIndex, float sampleRate, int framesPerUserBuffer, int framesPerWmmeBuffer, int wmmeBufferCount )
static int playUntilKeyPress( int deviceIndex, float sampleRate,
int framesPerUserBuffer, int framesPerWmmeBuffer, int wmmeBufferCount )
{
PaStreamParameters outputParameters;
PaWinMmeStreamInfo wmmeStreamInfo;
@ -324,13 +329,15 @@ static int playUntilKeyPress( int deviceIndex, float sampleRate, int framesPerUs
data.amp = 0;
data.fadeIn = 1;
data.fadeOut = 0;
data.phase = 0;
data.phaseIncrement = 15 + ((rand()%100) / 10); // randomise pitch
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
do{
printf( "Trying buffer size %d.\nIf it sounds smooth press 'y', if it sounds bad press 'n' ('q' to quit)\n", framesPerWmmeBuffer );
printf( "Trying buffer size %d.\nIf it sounds smooth (without clicks or glitches) press 'y', if it sounds bad press 'n' ('q' to quit)\n", framesPerWmmeBuffer );
c = tolower(_getch());
if( c == 'q' ){
Pa_Terminate();
@ -364,7 +371,7 @@ static void usage( int wmmeHostApiIndex )
fprintf( stderr, "Invalid device index. Use one of these:\n" );
for( i=0; i < Pa_GetDeviceCount(); ++i ){
if( Pa_GetDeviceInfo(i)->hostApi == wmmeHostApiIndex && Pa_GetDeviceInfo(i)->maxOutputChannels > 0 )
if( Pa_GetDeviceInfo(i)->hostApi == wmmeHostApiIndex && Pa_GetDeviceInfo(i)->maxOutputChannels > 0 )
fprintf( stderr, "%d (%s)\n", i, Pa_GetDeviceInfo(i)->name );
}
Pa_Terminate();
@ -372,11 +379,9 @@ static void usage( int wmmeHostApiIndex )
}
/*
TODO: test at 22050 44100, 48000, 96000, mono and stereo and surround
TODO: could be testing with 80% CPU load
another thing to try would be setting the timeBeginPeriod granularity to 1ms and see if it changes the behavior
ideas:
o- could be testing with 80% CPU load
o- could test with different channel counts
*/
int main(int argc, char* argv[])
@ -459,7 +464,7 @@ int main(int argc, char* argv[])
fprintf( resultsFp, "Sample rate: %f\n", (float)sampleRate );
fprintf( resultsFp, "Buffer count, Smallest working buffer size (frames), Smallest working buffering latency (frames), Smallest working buffering latency (Seconds)\n" );
for( wmmeBufferCount = wmmeMinBufferCount; wmmeBufferCount <= wmmeMaxBufferCount; ++wmmeBufferCount ){ // TODO print out range we're going to try before starting
for( wmmeBufferCount = wmmeMinBufferCount; wmmeBufferCount <= wmmeMaxBufferCount; ++wmmeBufferCount ){
printf( "Test %d of %d\n", (wmmeBufferCount - wmmeMinBufferCount) + 1, (wmmeMaxBufferCount-wmmeMinBufferCount) + 1 );
printf( "Testing with %d buffers...\n", wmmeBufferCount );