126 lines
3.6 KiB
C++
126 lines
3.6 KiB
C++
/**
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* @author Edouard DUPIN
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*
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* @copyright 2014, Edouard DUPIN, all right reserved
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*
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* @license BSD v3 (see license file)
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*/
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#include <eaudiofx/base/ReceiverRtAudio.h>
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#include <eaudiofx/core/BufferAudioRaw.h>
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#include <eaudiofx/debug.h>
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#include <rtaudio/RtAudio.h>
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int eaudiofx::ReceiverRtAudio::rtAudioCallBack(void *_outputBuffer,
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void *_inputBuffer,
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unsigned int _nBufferFrames,
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double _streamTime,
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RtAudioStreamStatus _status,
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void* _userData) {
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if (_userData == NULL) {
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EAUDIOFX_ERROR("Null class pointer");
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return -1;
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}
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if (_outputBuffer == NULL) {
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EAUDIOFX_ERROR("Null output buffer pointer");
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return -1;
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}
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eaudiofx::ReceiverRtAudio* classPointer = static_cast<eaudiofx::ReceiverRtAudio*>(_userData);
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if (classPointer == NULL) {
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EAUDIOFX_ERROR("Wrong class pointer data");
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return -1;
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}
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return classPointer->needData((float*)_outputBuffer, _nBufferFrames, _streamTime, _status);
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}
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int32_t eaudiofx::ReceiverRtAudio::needData(float* _outputBuffer,
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size_t _nBufferFrames,
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double _streamTime,
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RtAudioStreamStatus _status) {
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// Request block input:
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int32_t ret = eaudiofx::Block::pull(_streamTime, _nBufferFrames, (float)_nBufferFrames/48000.0f);
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if (ret != eaudiofx::ERR_NONE) {
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EAUDIOFX_ERROR("wan not get data ...");
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return -1;
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}
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auto it = m_io.find("in");
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if (it == m_io.end()) {
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EAUDIOFX_WARNING("Request an un-existing IO");
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return 0;
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}
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eaudiofx::BufferAudioRaw* buffer = dynamic_cast<eaudiofx::BufferAudioRaw*>(it->second.m_buffer);
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if (buffer == NULL) {
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EAUDIOFX_WARNING("no IO plugged");
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return 0;
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}
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float* data = buffer->getData();
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for (int32_t iii=0; iii<_nBufferFrames*2; ++iii) {
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_outputBuffer[iii] = data[iii]*0.05f;
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}
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/*
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FILE* plopppp = fopen("plopout.raw", "a");
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fwrite(_outputBuffer, sizeof(float), _nBufferFrames, plopppp);
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fflush(plopppp);
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fclose(plopppp);
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*/
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return 0;
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}
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eaudiofx::ReceiverRtAudio::ReceiverRtAudio(void) {
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setLive(true);
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// set output :
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m_io.insert(
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std::pair<std::string, eaudiofx::Block::IOProperty>(
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"in",
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eaudiofx::Block::IOProperty(
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eaudiofx::Block::ioInput,
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"{ type:'audio', compression:'raw', frequency:48000, channel:2, format:'float' }",
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NULL
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) ) );
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};
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int32_t eaudiofx::ReceiverRtAudio::init(void) {
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EAUDIOFX_DEBUG("Create RTAudio generator ...");
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if ( m_dac.getDeviceCount() < 1 ) {
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EAUDIOFX_ERROR("No audio devices found!");
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exit( 0 );
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}
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EAUDIOFX_DEBUG("nb devices :" << m_dac.getDeviceCount() << " default device ID : " << m_dac.getDefaultOutputDevice());
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RtAudio::StreamParameters parameters;
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m_parameters.deviceId = m_dac.getDefaultOutputDevice();
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m_parameters.nChannels = 2;
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m_parameters.firstChannel = 0;
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unsigned int bufferFrames = 256;
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try {
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EAUDIOFX_DEBUG("OPEN Stream ...");
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m_dac.openStream(&m_parameters, NULL, RTAUDIO_FLOAT32, 48000, &bufferFrames, &rtAudioCallBack, (void *)this);
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m_dac.startStream();
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}catch ( RtError& e ) {
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e.printMessage();
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exit( 0 );
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}
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return eaudiofx::ERR_NONE;
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};
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int32_t eaudiofx::ReceiverRtAudio::unInit(void) {
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try {
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EAUDIOFX_DEBUG("STOP Stream ...");
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// Stop the stream
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m_dac.stopStream();
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} catch (RtError& e) {
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e.printMessage();
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return eaudiofx::ERR_NONE;
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}
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if ( m_dac.isStreamOpen() ) {
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m_dac.closeStream();
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}
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return eaudiofx::ERR_NONE;
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};
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