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some work on ASIO

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This commit is contained in:
Volker Fischer 2008-03-16 13:10:46 +00:00
parent 7cd1c095f9
commit c1f366cdf5
2 changed files with 58 additions and 84 deletions
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58
windows/sound.cpp
View file

@ -637,47 +637,20 @@ CSound::~CSound()
// ASIO callbacks -------------------------------------------------------------
ASIOTime* CSound::bufferSwitchTimeInfo ( ASIOTime *timeInfo, long index, ASIOBool processNow )
{
bufferSwitch ( index, processNow );
return 0L;
}
void CSound::bufferSwitch( long index, ASIOBool processNow )
{
static long processedSamples = 0;
/*
static long processedSamples = 0;
// store the timeInfo for later use
asioDriverInfo.tInfo = *timeInfo;
// get the time stamp of the buffer, not necessary if no
// synchronization to other media is required
if (timeInfo->timeInfo.flags & kSystemTimeValid)
asioDriverInfo.nanoSeconds = ASIO64toDouble(timeInfo->timeInfo.systemTime);
else
asioDriverInfo.nanoSeconds = 0;
if (timeInfo->timeInfo.flags & kSamplePositionValid)
asioDriverInfo.samples = ASIO64toDouble(timeInfo->timeInfo.samplePosition);
else
asioDriverInfo.samples = 0;
if (timeInfo->timeCode.flags & kTcValid)
asioDriverInfo.tcSamples = ASIO64toDouble(timeInfo->timeCode.timeCodeSamples);
else
asioDriverInfo.tcSamples = 0;
// get the system reference time
asioDriverInfo.sysRefTime = get_sys_reference_time();
#if WINDOWS && _DEBUG
// a few debug messages for the Windows device driver developer
// tells you the time when driver got its interrupt and the delay until the app receives
// the event notification.
static double last_samples = 0;
char tmp[128];
sprintf (tmp, "diff: %d / %d ms / %d ms / %d samples \n", asioDriverInfo.sysRefTime - (long)(asioDriverInfo.nanoSeconds / 1000000.0), asioDriverInfo.sysRefTime, (long)(asioDriverInfo.nanoSeconds / 1000000.0), (long)(asioDriverInfo.samples - last_samples));
OutputDebugString (tmp);
last_samples = asioDriverInfo.samples;
#endif
// buffer size in samples
long buffSize = asioDriverInfo.preferredSize;
// long buffSize = asioDriverInfo.preferredSize;
// perform the processing
for ( int i = 0; i < asioDriverInfo.inputBuffers + asioDriverInfo.outputBuffers; i++ )
@ -742,20 +715,21 @@ ASIOTime* CSound::bufferSwitchTimeInfo ( ASIOTime *timeInfo, long index, ASIOBoo
// finally if the driver supports the ASIOOutputReady() optimization, do it here, all data are in place
if ( asioDriverInfo.postOutput )
{
ASIOOutputReady();
}
if ( processedSamples >= asioDriverInfo.sampleRate * TEST_RUN_TIME ) // roughly measured
{
asioDriverInfo.stopped = true;
}
else
{
processedSamples += buffSize;
}
*/
return 0L;
}
void CSound::bufferSwitch( long index, ASIOBool processNow )
{
}

4
windows/sound.h
View file

@ -35,8 +35,8 @@
/* Definitions ****************************************************************/
// switch here between ASIO (Steinberg) or native Windows(TM) sound interface
#undef USE_ASIO_SND_INTERFACE
//#define USE_ASIO_SND_INTERFACE
//#undef USE_ASIO_SND_INTERFACE
#define USE_ASIO_SND_INTERFACE
#define NUM_IN_OUT_CHANNELS 2 /* Stereo recording (but we only