62 lines
1.7 KiB
C++
62 lines
1.7 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/debug.h>
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#include <eaudiofx/base/GeneratorSignal.h>
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#include <eaudiofx/core/BufferAudioRaw.h>
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#include <math.h>
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eaudiofx::GeneratorSignal::GeneratorSignal(void) :
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m_phase(0) {
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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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"out",
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eaudiofx::Block::IOProperty(
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eaudiofx::Block::ioOutput,
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"{ type:'audio', compression:'raw', frequency:48000, channel:2, format:'float' }",
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new eaudiofx::BufferAudioRaw(*this, 48000, 2)
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) ) );
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}
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int32_t eaudiofx::GeneratorSignal::pull(double _currentTime, int32_t _request, float _timeout) {
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auto it = m_io.find("out");
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if (it == m_io.end()) {
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EAUDIOFX_WARNING("request to pull data with no output !!!");
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return eaudiofx::ERR_FAIL;
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}
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eaudiofx::BufferAudioRaw* buffer = dynamic_cast<eaudiofx::BufferAudioRaw*>(it->second.m_buffer);
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//EAUDIOFX_ERROR("Generate data, request : " << _request << " at time : " << _currentTime);
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if (buffer == NULL) {
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// !! impossible case => a buffer can not be removed ...
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EAUDIOFX_ERROR("Buffer has been removed... OR change type ...");
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return eaudiofx::ERR_FAIL;
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}
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//request outpuffer needed size :
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buffer->setProperty(48000, 2, _request);
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float* data = buffer->getData();
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for (int32_t iii=0; iii<_request; ++iii) {
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for (int32_t jjj=0; jjj<2; ++jjj) {
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*data++ = cos(m_phase)*0.5f;
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}
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m_phase += 0.1;
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if (m_phase > 4.0*M_PI) {
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m_phase -= 4.0*M_PI;
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}
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}
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/*
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FILE* plopppp = fopen("plop.raw", "a");
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fwrite(buffer->getData(), sizeof(float), _request*2, plopppp);
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fflush(plopppp);
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fclose(plopppp);
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*/
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return eaudiofx::ERR_NONE;
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} |