mirror of
https://github.com/thestk/stk
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Version 4.1
This commit is contained in:
Gary Scavone
committed by
Stephen Sinclair
Stephen Sinclair
parent
81475b04c5
commit
2f09fcd019
250
src/RtWvOut.cpp
250
src/RtWvOut.cpp
@@ -1,125 +1,125 @@
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/***************************************************/
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/*! \class RtWvOut
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\brief STK realtime audio output class.
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This class provides a simplified interface to
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RtAudio for realtime audio output. It is a
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protected subclass of WvOut.
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RtWvOut supports multi-channel data in
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interleaved format. It is important to
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distinguish the tick() methods, which output
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single samples to all channels in a sample
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frame, from the tickFrame() method, which
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takes a pointer to multi-channel sample
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frame data.
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by Perry R. Cook and Gary P. Scavone, 1995 - 2002.
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*/
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/***************************************************/
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#include "RtWvOut.h"
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#include <stdio.h>
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RtWvOut :: RtWvOut(unsigned int nChannels, MY_FLOAT sampleRate, int device, int bufferFrames, int nBuffers )
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{
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// We'll let RtAudio deal with channel and srate limitations.
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channels = nChannels;
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bufferSize = bufferFrames;
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RtAudio::RTAUDIO_FORMAT format = ( sizeof(MY_FLOAT) == 8 ) ? RtAudio::RTAUDIO_FLOAT64 : RtAudio::RTAUDIO_FLOAT32;
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try {
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audio = new RtAudio(&stream, device, (int)channels, 0, 0, format,
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(int)sampleRate, &bufferSize, nBuffers);
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data = (MY_FLOAT *) audio->getStreamBuffer(stream);
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}
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catch (RtError &error) {
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handleError( error.getMessage(), StkError::AUDIO_SYSTEM );
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}
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stopped = true;
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}
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RtWvOut :: ~RtWvOut()
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{
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if ( !stopped )
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audio->stopStream(stream);
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delete audio;
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data = 0; // RtAudio deletes the buffer itself.
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}
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void RtWvOut :: start()
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{
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if ( stopped ) {
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audio->startStream(stream);
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stopped = false;
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}
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}
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void RtWvOut :: stop()
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{
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if ( !stopped ) {
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audio->stopStream(stream);
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stopped = true;
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}
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}
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unsigned long RtWvOut :: getFrames( void ) const
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{
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return totalCount;
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}
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MY_FLOAT RtWvOut :: getTime( void ) const
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{
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return (MY_FLOAT) totalCount / Stk::sampleRate();
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}
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void RtWvOut :: tick(const MY_FLOAT sample)
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{
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if ( stopped )
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start();
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for ( unsigned int j=0; j<channels; j++ )
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data[counter*channels+j] = sample;
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counter++;
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totalCount++;
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if ( counter >= (unsigned int )bufferSize ) {
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try {
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audio->tickStream(stream);
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}
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catch (RtError &error) {
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handleError( error.getMessage(), StkError::AUDIO_SYSTEM );
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}
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counter = 0;
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}
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}
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void RtWvOut :: tick(const MY_FLOAT *vector, unsigned int vectorSize)
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{
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for (unsigned int i=0; i<vectorSize; i++)
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tick( vector[i] );
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}
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void RtWvOut :: tickFrame(const MY_FLOAT *frameVector, unsigned int frames)
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{
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if ( stopped )
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start();
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for ( unsigned int i=0; i<frames; i++ ) {
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for ( unsigned int j=0; j<channels; j++ ) {
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data[counter*channels+j] = frameVector[i*channels+j];
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}
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counter++;
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if ( counter >= (unsigned int)bufferSize ) {
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try {
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audio->tickStream(stream);
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}
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catch (RtError &error) {
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handleError( error.getMessage(), StkError::AUDIO_SYSTEM );
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}
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counter = 0;
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}
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}
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}
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/***************************************************/
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/*! \class RtWvOut
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\brief STK realtime audio output class.
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This class provides a simplified interface to
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RtAudio for realtime audio output. It is a
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protected subclass of WvOut.
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RtWvOut supports multi-channel data in
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interleaved format. It is important to
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distinguish the tick() methods, which output
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single samples to all channels in a sample
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frame, from the tickFrame() method, which
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takes a pointer to multi-channel sample
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frame data.
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by Perry R. Cook and Gary P. Scavone, 1995 - 2002.
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*/
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/***************************************************/
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#include "RtWvOut.h"
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#include <stdio.h>
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RtWvOut :: RtWvOut(unsigned int nChannels, MY_FLOAT sampleRate, int device, int bufferFrames, int nBuffers )
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{
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// We'll let RtAudio deal with channel and srate limitations.
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channels = nChannels;
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bufferSize = bufferFrames;
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RtAudio::RTAUDIO_FORMAT format = ( sizeof(MY_FLOAT) == 8 ) ? RtAudio::RTAUDIO_FLOAT64 : RtAudio::RTAUDIO_FLOAT32;
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try {
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audio = new RtAudio(&stream, device, (int)channels, 0, 0, format,
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(int)sampleRate, &bufferSize, nBuffers);
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data = (MY_FLOAT *) audio->getStreamBuffer(stream);
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}
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catch (RtError &error) {
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handleError( error.getMessage(), StkError::AUDIO_SYSTEM );
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}
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stopped = true;
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}
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RtWvOut :: ~RtWvOut()
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{
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if ( !stopped )
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audio->stopStream(stream);
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delete audio;
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data = 0; // RtAudio deletes the buffer itself.
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}
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void RtWvOut :: start()
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{
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if ( stopped ) {
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audio->startStream(stream);
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stopped = false;
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}
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}
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void RtWvOut :: stop()
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{
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if ( !stopped ) {
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audio->stopStream(stream);
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stopped = true;
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}
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}
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unsigned long RtWvOut :: getFrames( void ) const
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{
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return totalCount;
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}
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MY_FLOAT RtWvOut :: getTime( void ) const
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{
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return (MY_FLOAT) totalCount / Stk::sampleRate();
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}
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void RtWvOut :: tick(const MY_FLOAT sample)
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{
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if ( stopped )
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start();
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for ( unsigned int j=0; j<channels; j++ )
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data[counter*channels+j] = sample;
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counter++;
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totalCount++;
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if ( counter >= (unsigned int )bufferSize ) {
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try {
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audio->tickStream(stream);
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}
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catch (RtError &error) {
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handleError( error.getMessage(), StkError::AUDIO_SYSTEM );
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}
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counter = 0;
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}
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}
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void RtWvOut :: tick(const MY_FLOAT *vector, unsigned int vectorSize)
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{
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for (unsigned int i=0; i<vectorSize; i++)
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tick( vector[i] );
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}
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void RtWvOut :: tickFrame(const MY_FLOAT *frameVector, unsigned int frames)
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{
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if ( stopped )
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start();
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for ( unsigned int i=0; i<frames; i++ ) {
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for ( unsigned int j=0; j<channels; j++ ) {
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data[counter*channels+j] = frameVector[i*channels+j];
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}
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counter++;
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if ( counter >= (unsigned int)bufferSize ) {
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try {
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audio->tickStream(stream);
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}
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catch (RtError &error) {
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handleError( error.getMessage(), StkError::AUDIO_SYSTEM );
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}
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counter = 0;
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}
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}
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}
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