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#include "adts_vlb.h"
#include "giofile.h"
#include "in2.h"
extern In_Module mod;
ADTS_VLB::ADTS_VLB() : decoder(0), needsync(1)
{}
int ADTS_VLB::Initialize(bool forceMono, bool reverseStereo, bool allowSurround, int maxBits, bool allowRG, bool _useFloat, bool _useCRC)
{
return 0;
}
bool ADTS_VLB::Open(ifc_mpeg_stream_reader *file)
{
waServiceFactory *factory = mod.service->service_getServiceByGuid(obj_vlbDecoderGUID);
if (factory)
decoder = (obj_vlbDecoder *)factory->getInterface();
if (decoder)
{
int status = decoder->Open((DataIOControl *)(CGioFile *)file);
if (status == 0)
return true;
}
return false;
}
void ADTS_VLB::Close()
{
if (decoder)
{
waServiceFactory *factory = mod.service->service_getServiceByGuid(obj_vlbDecoderGUID);
if (factory)
factory->releaseInterface(decoder);
}
decoder = 0;
}
void ADTS_VLB::GetOutputParameters(size_t *numBits, int *numChannels, int *sampleRate)
{
*sampleRate = params.sampling_frequency;
*numChannels = params.num_channels;
*numBits = 16;
}
void ADTS_VLB::CalculateFrameSize( int *frameSize )
{
*frameSize = 576 * 2 * params.num_channels;
if ( *frameSize > 576 * 2 * 2 )
*frameSize = 576 * 2 * 2;
}
void ADTS_VLB::Flush(ifc_mpeg_stream_reader *file)
{
decoder->Flush();
decoder->Close();
decoder->Open((DataIOControl *)(CGioFile *)file);
needsync = 1;
}
size_t ADTS_VLB::GetCurrentBitrate()
{
return params.bitrate / 1000;
}
size_t ADTS_VLB::GetDecoderDelay()
{
return 0; // not really sure
}
int ADTS_VLB::Sync(ifc_mpeg_stream_reader *file, unsigned __int8 *output, size_t outputSize, size_t *outputWritten, size_t *bitrate)
{
int status = decoder->Synchronize(¶ms);
if (!status)
{
needsync = 0;
return SUCCESS;
}
if (file->MPEGStream_EOF())
return ENDOFFILE;
return NEEDMOREDATA;
}
int ADTS_VLB::Decode(ifc_mpeg_stream_reader *file, unsigned __int8 *output, size_t outputSize, size_t *outputWritten, size_t *bitrate, size_t *endCut)
{
if (*outputWritten = decoder->Read(output, outputSize))
{
// TODO: benski> verify that params is valid here
*bitrate = params.bitrate / 1000;
return adts::SUCCESS;
}
if (needsync)
{
int status = decoder->Synchronize(¶ms);
if (!status)
{
needsync = 0;
}
else if (file->MPEGStream_EOF())
{
return adts::ENDOFFILE;
}
}
if (!needsync)
{
int status = decoder->DecodeFrame(¶ms);
if (status > ERR_NO_ERROR && status != ERR_END_OF_FILE)
{
needsync = 1;
return adts::FAILURE;
}
else
{
if (status == ERR_END_OF_FILE)
{
if (file->MPEGStream_EOF())
{
return adts::ENDOFFILE;
}
else
{
*bitrate = params.bitrate / 1000;
return adts::NEEDMOREDATA;
}
}
*bitrate = params.bitrate / 1000;
return adts::SUCCESS;
}
}
return adts::SUCCESS;
}
int ADTS_VLB::GetLayer()
{
return 4;
}
void ADTS_VLB::Release()
{
delete this;
}
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