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128 lines
2.0 KiB
128 lines
2.0 KiB
/* MPEG/WAVE Sound library
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(C) 1997 by Jung woo-jae */
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// Mpegtoraw.cpp
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// Server which get mpeg format and put raw format.
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#include "mpegsound.h"
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#include "synthesis.h"
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#include "dump.h"
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#include "../frame/audioFrame.h"
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#include <iostream>
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using namespace std;
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Mpegtoraw::Mpegtoraw(MpegAudioStream* mpegAudioStream,
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MpegAudioHeader* mpegAudioHeader) {
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this->mpegAudioStream=mpegAudioStream;
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this->mpegAudioHeader=mpegAudioHeader;
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this->lOutputStereo=true;
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setStereo(true);
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setDownSample(false);
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dump=new Dump();
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synthesis=new Synthesis();
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initialize();
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}
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Mpegtoraw::~Mpegtoraw() {
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delete synthesis;
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delete dump;
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}
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void Mpegtoraw::setStereo(int flag) {
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lWantStereo=flag;
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}
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void Mpegtoraw::setDownSample(int flag) {
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lDownSample=flag;
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}
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int Mpegtoraw::getStereo() {
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return lWantStereo;
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}
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int Mpegtoraw::getDownSample() {
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return lDownSample;
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}
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// Convert mpeg to raw
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// Mpeg headder class
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void Mpegtoraw::initialize() {
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layer3initialize();
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}
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// Convert mpeg to raw
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int Mpegtoraw::decode(AudioFrame* audioFrame) {
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int back=true;
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this->audioFrame=audioFrame;
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if (audioFrame->getSize() < RAWDATASIZE) {
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cout << "audioFrame needs at least:"<<RAWDATASIZE<<" size"<<endl;
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exit(0);
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}
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audioFrame->clearrawdata();
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synthesis->clearrawdata();
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int layer=mpegAudioHeader->getLayer();
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this->lOutputStereo=lWantStereo & mpegAudioHeader->getInputstereo();
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if (mpegAudioHeader->getProtection()==false) {
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mpegAudioStream->getbyte();
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mpegAudioStream->getbyte();
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}
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switch(layer) {
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case 3:
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extractlayer3();
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break;
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case 2:
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extractlayer2();
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break;
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case 1:
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extractlayer1();
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break;
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default:
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cout << "unknown layer:"<<layer<<endl;
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back=false;
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}
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//
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// Now put the frequencies/output etc.. in the frame
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//
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audioFrame->setFrameFormat(lOutputStereo,
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mpegAudioHeader->getFrequencyHz()>>lDownSample);
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audioFrame->putFloatData(synthesis->getOutputData(),synthesis->getLen());
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return back;
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}
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