400 lines
11 KiB
C++
400 lines
11 KiB
C++
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#include "main.h"
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#include "adts_mp2.h"
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#include "../winamp/wa_ipc.h"
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#include <math.h>
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#include "mpegutil.h"
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#include "../nsutil/pcm.h"
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extern int g_ds;
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<<<<<<< HEAD:in_mp3/adts_mp2.cpp
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DecoderHooks hooks={mp3GiveVisData, mp2Equalize, mp3Equalize};
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=======
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>>>>>>> 5058463... fix old-school vis/eq mp3 stuff:mp3/adts_mp2.cpp
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ADTS_MP2::ADTS_MP2() : decoder(0), gain(1.f)
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{
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memset(&hooks, 0, sizeof(hooks));
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#ifndef NO_MP3SURROUND
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lineFilled=false;
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saDecHandle=0;
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saMode = SA_DEC_OFF;
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#endif
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decoderDelay = 529;
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endcut=0;
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outputFrameSize = 0;
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bitsPerSample = 0;
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allowRG = false;
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useFloat = false;
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channels = 0;
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sampleRate = 0;
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memset(&delayline, 0, sizeof(delayline));
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delaylineSize = 0;
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}
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void ADTS_MP2::SetDecoderHooks(void *layer3_vis, void *layer2_eq, void *layer3_eq)
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{
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<<<<<<< HEAD:in_mp3/adts_mp2.cpp
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//*(void **)&hooks.layer3_vis = layer3_vis;
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=======
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*(void **)&hooks.layer3_vis = layer3_vis;
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>>>>>>> 5058463... fix old-school vis/eq mp3 stuff:mp3/adts_mp2.cpp
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*(void **)&hooks.layer2_eq = layer2_eq;
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*(void **)&hooks.layer3_eq = layer3_eq;
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}
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int ADTS_MP2::Initialize(bool forceMono, bool reverseStereo, bool allowSurround, int maxBits, bool _allowRG, bool _useFloat, bool _useCRC)
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{
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allowRG = _allowRG;
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useFloat = _useFloat;
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int downmix = 0;
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if (reverseStereo)
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downmix = 2;
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else
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downmix = forceMono ? 1 : 0;
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bitsPerSample = maxBits;
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<<<<<<< HEAD:in_mp3/adts_mp2.cpp
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decoder = new CMpgaDecoder(&hooks, g_ds, downmix, !!_useCRC);
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=======
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decoder = new CMpgaDecoder(hooks.layer3_vis?&hooks:(DecoderHooks *)0, MPEGAUDIO_QUALITY_FULL/*g_ds*/, downmix, _useCRC);
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>>>>>>> 5058463... fix old-school vis/eq mp3 stuff:mp3/adts_mp2.cpp
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#ifndef NO_MP3SURROUND
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if (allowSurround)
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IIS_SADec_Init(&saDecHandle, 6);
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#endif
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return 0;
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}
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bool ADTS_MP2::Open(ifc_mpeg_stream_reader *file)
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{
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decoder->Connect((CGioFile *)file);
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if (allowRG)
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gain = file->MPEGStream_Gain();
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return true;
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}
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void ADTS_MP2::Close()
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{
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if (decoder)
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{
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delete decoder;
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decoder = 0;
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}
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#ifndef NO_MP3SURROUND
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if (saDecHandle)
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IIS_SADec_Free(&saDecHandle);
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saDecHandle=0;
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#endif
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}
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void ADTS_MP2::GetOutputParameters(size_t *numBits, int *numChannels, int *sampleRate)
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{
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*sampleRate = this->sampleRate;
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*numChannels = channels;
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*numBits = bitsPerSample;
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}
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void ADTS_MP2::CalculateFrameSize(int *frameSize)
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{
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*frameSize = outputFrameSize;
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if (decoder->GetStreamInfo()->GetLayer() == 1)
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*frameSize *= 3;
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}
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void ADTS_MP2::Flush(ifc_mpeg_stream_reader *file)
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{
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decoder->Reset();
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#ifndef NO_MP3SURROUND
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if (saDecHandle)
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IIS_SADec_Reset(saDecHandle);
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lineFilled=false;
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#endif
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}
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size_t ADTS_MP2::GetCurrentBitrate()
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{
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return decoder->GetStreamInfo()->GetBitrate() / 1000;
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}
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size_t ADTS_MP2::GetDecoderDelay()
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{
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#ifndef NO_MP3SURROUND
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if (!saDecHandle || saMode == SA_DEC_OFF || saMode == SA_DEC_BYPASS)
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return decoderDelay;
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else /* bcc adds 576 delay */
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return decoderDelay+576;
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#else
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return decoderDelay;
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#endif
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}
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static void Decimate(const float *input, void *output, size_t numSamples, size_t *outputWritten, int bitsPerSample, bool useFloat, float gain)
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{
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if (!useFloat)
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{
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// TODO seen a few crashes reported where 'output' is 0
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nsutil_pcm_FloatToInt_Interleaved_Gain(output, input, bitsPerSample, numSamples, gain);
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}
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else if (gain != 1.f)
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{
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float *data = (float *)output;
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for (size_t i=0;i<numSamples;i++)
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data[i]*=gain;
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//data[i]=input[i]*gain;
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}
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*outputWritten = numSamples * (bitsPerSample / 8);
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}
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/*
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notes for mp3 surround implementations
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need to check the first two frames for ancillary data
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store first valid in temp
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store second valid frame in delay line
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decimate first valid into output buffer
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ancillary data is stored one frame behind, so PCM data decoded from mp3 frame n combines with anc data from frame n+1
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*/
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int ADTS_MP2::Sync(ifc_mpeg_stream_reader *_file, unsigned __int8 *output, size_t outputSize, size_t *outputWritten, size_t *bitrate)
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{
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SSC ssc;
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CGioFile *file = (CGioFile *)_file;
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unsigned char ancBytes[8192] = {0};
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int numAncBytes = 0;
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unsigned int delay=0, totalLength=0;
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float floatTemp[1152*2] = {0};
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float *flData=useFloat?(float *)output:floatTemp;
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ssc = decoder->DecodeFrame(flData, sizeof(floatTemp), &outputFrameSize,
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<<<<<<< HEAD:in_mp3/adts_mp2.cpp
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ancBytes, &numAncBytes, 1, &delay, &totalLength);
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// TODO: benski> we should really have CGioFile try to read this stuff
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if (delay && !file->prepad)
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{
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// validate
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if (delay >= 529)
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{
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decoderDelay = delay;
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endcut = 1152 - ((totalLength + delay) % 1152); // how many 0 samples had to be added?
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endcut += decoderDelay; // also need to cut out the encoder+decoder delay
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file->m_vbr_samples = totalLength;
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}
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}
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=======
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ancBytes, &numAncBytes);
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>>>>>>> fd5c493... have CGioFile read the OFL (from newer fraunhofer encoders):mp3/adts_mp2.cpp
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switch (ssc)
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{
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case SSC_OK:
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{
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channels = decoder->GetStreamInfo()->GetEffectiveChannels();
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sampleRate = decoder->GetStreamInfo()->GetEffectiveSFreq();
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#ifndef NO_MP3SURROUND
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if (!numAncBytes && saDecHandle)
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{
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ssc = decoder->DecodeFrame(delayline, sizeof(delayline), &delaylineSize,
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ancBytes, &numAncBytes);
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if (SSC_SUCCESS(ssc))
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{
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lineFilled=true;
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}
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else if (ssc == SSC_W_MPGA_SYNCEOF)
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return ENDOFFILE;
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else
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return NEEDMOREDATA;
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}
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if (saDecHandle)
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{
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SA_DEC_ERROR sa_error = IIS_SADec_DecodeAncData(saDecHandle, ancBytes, numAncBytes, 0, 0);
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if (sa_error == SA_DEC_NO_ERROR)
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{
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IIS_SADec_InitInfo(saDecHandle, sampleRate, channels);
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SA_DEC_INFO saInfo = IIS_SADec_GetInfo(saDecHandle);
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sampleRate = saInfo.SampleRate;
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channels = saInfo.nChannelsOut;
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saMode = saInfo.configuredMode;
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}
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else if (saMode == SA_DEC_OFF)
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{
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IIS_SADec_Free(&saDecHandle);
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saDecHandle=0;
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}
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else
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{
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lineFilled=false;
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return NEEDMOREDATA;
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}
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}
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if (saDecHandle)
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{
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float surroundFloatTemp[1152*6] = {0};
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int outputSamples = 0;
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/*SA_DEC_ERROR sa_error = */IIS_SADec_DecodeFrame(saDecHandle,
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flData, outputFrameSize/sizeof(float),
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(char *)ancBytes, numAncBytes,
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surroundFloatTemp, sizeof(surroundFloatTemp),
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&outputSamples, saMode, 0, 0,
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0, 0);
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if (useFloat)
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memcpy(output, surroundFloatTemp, sizeof(surroundFloatTemp));
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Decimate(surroundFloatTemp, output, outputSamples, outputWritten, bitsPerSample, useFloat, (float)gain);
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outputFrameSize = *outputWritten;
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}
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else
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#endif
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{
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Decimate(floatTemp, output, outputFrameSize / sizeof(float), outputWritten, bitsPerSample, useFloat, (float)gain);
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outputFrameSize = *outputWritten;
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}
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}
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return SSC_OK;
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case SSC_W_MPGA_SYNCSEARCHED:
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return NEEDMOREDATA;
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case SSC_W_MPGA_SYNCEOF:
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return ENDOFFILE;
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case SSC_E_MPGA_WRONGLAYER:
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decoder->m_Mbs.Seek(1);
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default:
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return NEEDMOREDATA;
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}
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}
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int ADTS_MP2::Decode(ifc_mpeg_stream_reader *file, unsigned __int8 *output, size_t outputSize, size_t *outputWritten, size_t *bitrate, size_t *endCut)
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{
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if (endcut)
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{
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*endCut = endcut;
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endcut=0;
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}
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#ifndef NO_MP3SURROUND
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if (!saDecHandle && lineFilled) // if we don't have surround info, go ahead and flush out the delayline buffer
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{
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Decimate(delayline, output, delaylineSize / sizeof(float), outputWritten, bitsPerSample, useFloat, (float)gain);
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*bitrate = decoder->GetStreamInfo()->GetBitrate() / 1000;
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lineFilled=false;
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return adts::SUCCESS;
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}
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if (saDecHandle && !lineFilled && !decoder->IsEof()) // have surround info, but don't have a previously decoded frame
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{
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// resync
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int ret = Sync(file, output, outputSize, outputWritten, bitrate);
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if (ret == SSC_OK && saDecHandle)
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{
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*bitrate = decoder->GetStreamInfo()->GetBitrate() / 1000;
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return adts::SUCCESS;
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}
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else if (saDecHandle)
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return ret;
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else
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return adts::FAILURE;
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}
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#endif
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unsigned char ancBytes[8192] = {0};
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int numAncBytes = 0;
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int newl;
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float floatTemp[1152*2] = {0};
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float *flData=useFloat?(float *)output:floatTemp;
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SSC ssc = decoder->DecodeFrame(flData, sizeof(floatTemp), &newl, ancBytes, &numAncBytes);
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if (SSC_SUCCESS(ssc))
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{
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#ifndef NO_MP3SURROUND
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if (saDecHandle && lineFilled)
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{
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float surroundFloatTemp[1152*6] = {0};
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int outputSamples;
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/*SA_DEC_ERROR sa_error = */IIS_SADec_DecodeFrame(saDecHandle,
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delayline, delaylineSize/sizeof(float),
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(char *)ancBytes, numAncBytes,
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surroundFloatTemp, sizeof(surroundFloatTemp),
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&outputSamples, saMode, 0, 0,
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0, 0);
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if (useFloat)
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memcpy(output, surroundFloatTemp, sizeof(surroundFloatTemp));
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Decimate(surroundFloatTemp, output, outputSamples, outputWritten, bitsPerSample, useFloat, (float)gain);
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memcpy(delayline, flData, delaylineSize);
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}
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else
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#endif
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{
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Decimate(floatTemp, output, newl / sizeof(float), outputWritten, bitsPerSample, useFloat, (float)gain);
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}
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*bitrate = decoder->GetStreamInfo()->GetBitrate() / 1000;
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return adts::SUCCESS;
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}
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else if (decoder->IsEof())
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{
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#ifndef NO_MP3SURROUND
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/* In case of SA processing one ancillary data
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package and maybe fill samples left in the dynamic
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buffer of the mp3 decoder. Take care, that the
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ancillary data buffer is greater then the dynamic buffer of
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the mp3 decoder. */
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if (saDecHandle && lineFilled)
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{
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decoder->GetLastAncData(ancBytes, &numAncBytes);
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float surroundFloatTemp[1152*6];
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int outputSamples = 0;
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/*SA_DEC_ERROR sa_error = */IIS_SADec_DecodeFrame(saDecHandle,
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delayline, delaylineSize/sizeof(float),
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(char *)ancBytes, numAncBytes,
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surroundFloatTemp, sizeof(surroundFloatTemp),
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&outputSamples, saMode, 0, 0,
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0, 0);
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if (useFloat)
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memcpy(output, surroundFloatTemp, sizeof(surroundFloatTemp));
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Decimate(surroundFloatTemp, output, outputSamples, outputWritten, bitsPerSample, useFloat, (float)gain);
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lineFilled=false;
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*bitrate = decoder->GetStreamInfo()->GetBitrate() / 1000;
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return adts::SUCCESS;
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}
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else
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#endif
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return adts::ENDOFFILE;
|
||
|
|
}
|
||
|
|
else if (ssc == SSC_W_MPGA_SYNCNEEDDATA)
|
||
|
|
{
|
||
|
|
*bitrate = decoder->GetStreamInfo()->GetBitrate() / 1000;
|
||
|
|
return adts::NEEDMOREDATA;
|
||
|
|
}
|
||
|
|
else if (ssc==SSC_W_MPGA_SYNCLOST || ssc==SSC_W_MPGA_SYNCSEARCHED)
|
||
|
|
{
|
||
|
|
*bitrate = decoder->GetStreamInfo()->GetBitrate() / 1000;
|
||
|
|
return adts::NEEDSYNC;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (ssc == SSC_E_MPGA_WRONGLAYER)
|
||
|
|
decoder->m_Mbs.Seek(1);
|
||
|
|
|
||
|
|
return adts::FAILURE;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
int ADTS_MP2::GetLayer()
|
||
|
|
{
|
||
|
|
if (decoder)
|
||
|
|
return decoder->GetStreamInfo()->GetLayer();
|
||
|
|
else
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void ADTS_MP2::Release()
|
||
|
|
{
|
||
|
|
delete this;
|
||
|
|
}
|