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Fixes for FLAC support

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This commit is contained in:
Silent 2014-06-11 00:40:08 +02:00
parent ed410fcea2
commit d71e048691
2 changed files with 65 additions and 35 deletions
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81
SilentPatch/AudioHardware.cpp
View File

@ -8,21 +8,27 @@
//WRAPPER unsigned int CAEDataStream::FillBuffer(void* pBuf, unsigned long nLen) { EAXJMP(0x4DC1C0); }
WRAPPER bool CAEDataStream::Initialise() { EAXJMP(0x4DC2B0); }
//static bool bEOFFlag = false;
FLAC__StreamDecoderReadStatus CAEFLACDecoder::read_cb(const FLAC__StreamDecoder* decoder, FLAC__byte buffer[], size_t* bytes, void* client_data)
{
UNREFERENCED_PARAMETER(decoder);
CAEFLACDecoder* pClientData = static_cast<CAEFLACDecoder*>(client_data);
ReadFile(pClientData->GetStream()->GetFile(), buffer, *bytes, reinterpret_cast<LPDWORD>(bytes), nullptr); //*bytes = pClientData->GetStream()->FillBuffer(buffer, *bytes);
//*bytes = pClientData->GetStream()->FillBuffer(buffer, *bytes);
//bEOFFlag = GetLastError() == ERROR_HANDLE_EOF;
FLAC__StreamDecoderReadStatus bResult = *bytes ? FLAC__STREAM_DECODER_READ_STATUS_CONTINUE : FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
auto result = *bytes ? FLAC__STREAM_DECODER_READ_STATUS_CONTINUE : FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
return bResult;
return result;
}
static FLAC__int32* pMalloc = nullptr;
static unsigned int nBlockSize = 0;
static unsigned int nSamplesLeftToProcess = 0;
FLAC__StreamDecoderWriteStatus CAEFLACDecoder::write_cb(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 *const buffer[], void *client_data)
{
CAEFLACDecoder* pClientData = static_cast<CAEFLACDecoder*>(client_data);
@ -32,17 +38,23 @@ FLAC__StreamDecoderWriteStatus CAEFLACDecoder::write_cb(const FLAC__StreamDecode
frame->header.number.sample_number :
frame->header.number.frame_number * frame->header.blocksize;
if ( frame->header.blocksize > nBlockSize )
// Mono/stereo?
unsigned int nNumChannelsToAlloc = pClientData->pStreamInfo->data.stream_info.channels > 1 ? 2 : 1;
static unsigned int nLastMallocSize = 0;
if ( frame->header.blocksize * sizeof(FLAC__int32) * nNumChannelsToAlloc > nLastMallocSize )
{
// Realloc needed
operator delete(pMalloc);
pMalloc = static_cast<FLAC__int32*>(operator new(frame->header.blocksize * sizeof(FLAC__int32) * 2)); // TODO: More channels?
nLastMallocSize = frame->header.blocksize * sizeof(FLAC__int32) * nNumChannelsToAlloc;
pMalloc = static_cast<FLAC__int32*>(operator new(nLastMallocSize)); // TODO: More channels?
}
nBlockSize = frame->header.blocksize;
memcpy(pMalloc, buffer[0], nBlockSize * sizeof(FLAC__int32));
memcpy(pMalloc+nBlockSize, buffer[1], nBlockSize * sizeof(FLAC__int32));
if ( nNumChannelsToAlloc > 1 )
memcpy(pMalloc+nBlockSize, buffer[1], nBlockSize * sizeof(FLAC__int32));
return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
@ -91,10 +103,11 @@ FLAC__StreamDecoderLengthStatus CAEFLACDecoder::length_cb(const FLAC__StreamDeco
return bResult ? FLAC__STREAM_DECODER_LENGTH_STATUS_OK: FLAC__STREAM_DECODER_LENGTH_STATUS_ERROR;
}
FLAC__bool CAEFLACDecoder::eof_cb(const FLAC__StreamDecoder *decoder, void *client_data)
FLAC__bool CAEFLACDecoder::eof_cb(const FLAC__StreamDecoder* decoder, void* client_data)
{
// TODO: DO
// Not implemented
UNREFERENCED_PARAMETER(decoder);
UNREFERENCED_PARAMETER(client_data);
return false;
}
@ -117,38 +130,64 @@ bool CAEFLACDecoder::Initialise()
return result;
}
#include <cassert>
unsigned int CAEFLACDecoder::FillBuffer(void* pBuf, unsigned long nLen)
{
signed int nSigLen = nLen / 4;
//unsigned int nSigLen = nLen / 4;
unsigned int nBytesDecoded = 0;
FLAC__int16* pBuffer = static_cast<FLAC__int16*>(pBuf);
while ( nSigLen > 0 )
while ( nBytesDecoded < nLen )
{
FLAC__stream_decoder_process_single(pFLACDecoder);
static FLAC__int32* pCurrentPtr[2];
FLAC__int32* pCurrentPtr[2];
unsigned int nToWrite;
// No samples left from a previous fetch?
if ( !nSamplesLeftToProcess )
{
FLAC__stream_decoder_process_single(pFLACDecoder);
pCurrentPtr[0] = pMalloc;
pCurrentPtr[1] = pMalloc+nBlockSize;
pCurrentPtr[0] = pMalloc;
pCurrentPtr[1] = pMalloc+nBlockSize;
if ( (nLen - nBytesDecoded) / 4 >= nBlockSize )
nToWrite = nBlockSize;
else
nToWrite = (nLen - nBytesDecoded) / 4;
nSamplesLeftToProcess = nBlockSize;
}
else
nToWrite = nSamplesLeftToProcess;
// Write channels
unsigned int nToWrite = min(nLen / 4, nBlockSize);
for ( unsigned int i = 0; i < nToWrite; i++ )
// = min((nLen - nBytesDecoded) / 4, nBlockSize);
for ( unsigned int i = 0; i < nToWrite; i++, nSamplesLeftToProcess-- )
{
pBuffer[0] = pCurrentPtr[0][i];
pBuffer[1] = pCurrentPtr[1][i];
pBuffer[1] = pCurrentPtr[pStreamInfo->data.stream_info.channels > 1][i];
pBuffer += 2;
}
nSigLen -= nToWrite;
//nSigLen -= nToWrite;
nBytesDecoded += nToWrite*4;
if ( FLAC__stream_decoder_get_state(pFLACDecoder) == FLAC__STREAM_DECODER_END_OF_STREAM )
break;
}
return nSigLen > 0 ? nLen - nBytesDecoded : nLen;
return nBytesDecoded;//nSigLen > 0 ? nLen - nBytesDecoded : nLen;
}
CAEFLACDecoder::~CAEFLACDecoder()
{
nSamplesLeftToProcess = 0;
if ( pFLACDecoder )
{
FLAC__stream_decoder_finish(pFLACDecoder);
FLAC__stream_decoder_delete(pFLACDecoder);
FLAC__metadata_object_delete(pStreamInfo);
pFLACDecoder = nullptr;
}
}

19
SilentPatch/AudioHardware.h
View File

@ -144,18 +144,7 @@ public:
: CAEStreamingDecoder(stream), pFLACDecoder(nullptr)
{}
virtual ~CAEFLACDecoder()
{
if ( pFLACDecoder )
{
FLAC__stream_decoder_finish(pFLACDecoder);
FLAC__stream_decoder_delete(pFLACDecoder);
FLAC__metadata_object_delete(pStreamInfo);
pFLACDecoder = nullptr;
}
}
virtual ~CAEFLACDecoder();
virtual bool Initialise() override;
@ -163,12 +152,14 @@ public:
virtual unsigned int GetStreamLengthMs() override
{
return pStreamInfo->data.stream_info.total_samples * 1000 / pStreamInfo->data.stream_info.sample_rate;
unsigned int nTime = pStreamInfo->data.stream_info.total_samples * 1000 / pStreamInfo->data.stream_info.sample_rate;
return nTime;
}
virtual unsigned int GetStreamPlayTimeMs() override
{
return nCurrentSample * 1000 / pStreamInfo->data.stream_info.sample_rate;
unsigned int nTime = nCurrentSample * 1000 / pStreamInfo->data.stream_info.sample_rate;
return nTime;
}
virtual void SetCursor(unsigned int nTime) override