e1lama/stk
1
0
Fork 0
mirror of https://github.com/thestk/stk synced 2026-01-15 14:01:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

Version 4.3.0

Browse Source
This commit is contained in:
Gary Scavone
2009-03-24 23:02:15 -04:00
committed by Stephen Sinclair
parent 2cbce2d8bd
commit 27d9b79dc7
271 changed files with 22219 additions and 8834 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
projects/examples/crtsine.cpp
View File

@@ -6,12 +6,13 @@
// This tick() function handles sample computation only. It will be
// called automatically when the system needs a new buffer of audio
// samples.
int tick(char *buffer, int bufferSize, void *dataPointer)
int tick( void *outputBuffer, void *inputBuffer, unsigned int nBufferFrames,
double streamTime, RtAudioStreamStatus status, void *dataPointer )
{
SineWave *sine = (SineWave *) dataPointer;
register StkFloat *samples = (StkFloat *) buffer;
register StkFloat *samples = (StkFloat *) outputBuffer;
for ( int i=0; i<bufferSize; i++ )
for ( unsigned int i=0; i<nBufferFrames; i++ )
*samples++ = sine->tick();
return 0;
@@ -23,26 +24,28 @@ int main()
Stk::setSampleRate( 44100.0 );
SineWave sine;
RtAudio *dac = 0;
RtAudio dac;
// Figure out how many bytes in an StkFloat and setup the RtAudio object.
// Figure out how many bytes in an StkFloat and setup the RtAudio stream.
RtAudio::StreamParameters parameters;
parameters.deviceId = dac.getDefaultOutputDevice();
parameters.nChannels = 1;
RtAudioFormat format = ( sizeof(StkFloat) == 8 ) ? RTAUDIO_FLOAT64 : RTAUDIO_FLOAT32;
int bufferSize = RT_BUFFER_SIZE;
unsigned int bufferFrames = RT_BUFFER_SIZE;
try {
dac = new RtAudio(0, 1, 0, 0, format, (int)Stk::sampleRate(), &bufferSize, 4);
dac.openStream( &parameters, NULL, format, (unsigned int)Stk::sampleRate(), &bufferFrames, &tick, (void *)&sine );
}
catch (RtError& error) {
catch ( RtError &error ) {
error.printMessage();
exit(0);
goto cleanup;
}
sine.setFrequency(440.0);
try {
dac->setStreamCallback(&tick, (void *)&sine);
dac->startStream();
dac.startStream();
}
catch (RtError &error) {
catch ( RtError &error ) {
error.printMessage();
goto cleanup;
}
@@ -50,20 +53,17 @@ int main()
// Block waiting here.
char keyhit;
std::cout << "\nPlaying ... press <enter> to quit.\n";
std::cin.get(keyhit);
std::cin.get( keyhit );
// Shut down the callback and output stream.
// Shut down the output stream.
try {
dac->cancelStreamCallback();
dac->closeStream();
dac.closeStream();
}
catch (RtError &error) {
catch ( RtError &error ) {
error.printMessage();
}
cleanup:
delete dac;
return 0;
}