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/*
* Copyright (C) 2003-2006 Gabest
* http://www.gabest.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "stdafx.h"
#include <mmreg.h>
#include <ks.h>
#include <initguid.h>
#include <uuids.h>
#include <moreuuids.h>
#include "FlacSource.h"
#include "../../../DSUtil/DSUtil.h"
#include "FLAC/stream_decoder.h"
#define _DECODER_ (FLAC__StreamDecoder*)m_pDecoder
#ifdef REGISTER_FILTER
const AMOVIESETUP_MEDIATYPE sudPinTypesOut[] =
{
{&MEDIATYPE_Audio, &MEDIASUBTYPE_FLAC_FRAMED}
};
const AMOVIESETUP_PIN sudOpPin[] =
{
{L"Output", FALSE, TRUE, FALSE, FALSE, &CLSID_NULL, NULL, countof(sudPinTypesOut), sudPinTypesOut}
};
const AMOVIESETUP_FILTER sudFilter[] =
{
{&__uuidof(CFlacSource), L"MPC - Flac Source", MERIT_NORMAL, countof(sudOpPin), sudOpPin, CLSID_LegacyAmFilterCategory}
};
CFactoryTemplate g_Templates[] =
{
{sudFilter[0].strName, sudFilter[0].clsID, CreateInstance<CFlacSource>, NULL, &sudFilter[0]}
};
int g_cTemplates = countof(g_Templates);
STDAPI DllRegisterServer()
{
SetRegKeyValue(
_T("Media Type\\{e436eb83-524f-11ce-9f53-0020af0ba770}"), _T("{1930D8FF-4739-4e42-9199-3B2EDEAA3BF2}"),
_T("0"), _T("0,4,,664C6143"));
SetRegKeyValue(
_T("Media Type\\{e436eb83-524f-11ce-9f53-0020af0ba770}"), _T("{1930D8FF-4739-4e42-9199-3B2EDEAA3BF2}"),
_T("Source Filter"), _T("{1930D8FF-4739-4e42-9199-3B2EDEAA3BF2}"));
SetRegKeyValue(
_T("Media Type\\Extensions"), _T(".flac"),
_T("Source Filter"), _T("{1930D8FF-4739-4e42-9199-3B2EDEAA3BF2}"));
return AMovieDllRegisterServer2(TRUE);
}
STDAPI DllUnregisterServer()
{
DeleteRegKey(_T("Media Type\\{e436eb83-524f-11ce-9f53-0020af0ba770}"), _T("{1930D8FF-4739-4e42-9199-3B2EDEAA3BF2}"));
DeleteRegKey(_T("Media Type\\Extensions"), _T(".flac"));
return AMovieDllRegisterServer2(FALSE);
}
#include "../../FilterApp.h"
CFilterApp theApp;
#endif
// Declaration for Flac callbacks
static FLAC__StreamDecoderReadStatus StreamDecoderRead(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data);
static FLAC__StreamDecoderSeekStatus StreamDecoderSeek(const FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data);
static FLAC__StreamDecoderTellStatus StreamDecoderTell(const FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
static FLAC__StreamDecoderLengthStatus StreamDecoderLength(const FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data);
static FLAC__bool StreamDecoderEof(const FLAC__StreamDecoder *decoder, void *client_data);
static FLAC__StreamDecoderWriteStatus StreamDecoderWrite(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
static void StreamDecoderError(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
static void StreamDecoderMetadata(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
//
// CFlacSource
//
CFlacSource::CFlacSource(LPUNKNOWN lpunk, HRESULT* phr)
: CBaseSource<CFlacStream>(NAME("CFlacSource"), lpunk, phr, __uuidof(this))
{
}
CFlacSource::~CFlacSource()
{
}
// CFlacStream
CFlacStream::CFlacStream(const WCHAR* wfn, CSource* pParent, HRESULT* phr)
: CBaseStream(NAME("CFlacStream"), pParent, phr)
, m_bIsEOF (false)
{
CAutoLock cAutoLock(&m_cSharedState);
CString fn(wfn);
CFileException ex;
HRESULT hr = E_FAIL;
do
{
if(!m_file.Open(fn, CFile::modeRead|CFile::shareDenyNone, &ex))
{
hr = AmHresultFromWin32 (ex.m_lOsError);
break;
}
m_pDecoder = FLAC__stream_decoder_new();
if (!m_pDecoder) break;
if (FLAC__STREAM_DECODER_INIT_STATUS_OK != FLAC__stream_decoder_init_stream (_DECODER_,
StreamDecoderRead,
StreamDecoderSeek,
StreamDecoderTell,
StreamDecoderLength,
StreamDecoderEof,
StreamDecoderWrite,
StreamDecoderMetadata,
StreamDecoderError,
this))
{
break;
}
if (!FLAC__stream_decoder_process_until_end_of_metadata (_DECODER_) ||
!FLAC__stream_decoder_seek_absolute (_DECODER_, 0))
break;
FLAC__stream_decoder_get_decode_position(_DECODER_, &m_llOffset);
hr = S_OK;
} while (false);
if(phr) *phr = hr;
}
CFlacStream::~CFlacStream()
{
}
HRESULT CFlacStream::DecideBufferSize(IMemAllocator* pAlloc, ALLOCATOR_PROPERTIES* pProperties)
{
ASSERT(pAlloc);
ASSERT(pProperties);
HRESULT hr = NOERROR;
pProperties->cBuffers = 1;
pProperties->cbBuffer = m_nMaxFrameSize;
ALLOCATOR_PROPERTIES Actual;
if(FAILED(hr = pAlloc->SetProperties(pProperties, &Actual))) return hr;
if(Actual.cbBuffer < pProperties->cbBuffer) return E_FAIL;
ASSERT(Actual.cBuffers == pProperties->cBuffers);
return NOERROR;
}
HRESULT CFlacStream::FillBuffer(IMediaSample* pSample, int nFrame, BYTE* pOut, long& len)
{
FLAC__uint64 llCurPos;
FLAC__uint64 llNextPos;
if (m_bDiscontinuity)
{
FLAC__stream_decoder_seek_absolute (_DECODER_, (m_rtPosition * m_i64TotalNumSamples) / m_rtDuration);
}
FLAC__stream_decoder_get_decode_position(_DECODER_, &llCurPos);
FLAC__stream_decoder_skip_single_frame (_DECODER_);
if (m_bIsEOF)
return S_FALSE;
FLAC__stream_decoder_get_decode_position(_DECODER_, &llNextPos);
FLAC__uint64 llCurFile = m_file.GetPosition();
len = llNextPos - llCurPos;
ASSERT (len > 0);
if (len <= 0) return S_FALSE;
m_file.Seek (llCurPos, CFile::begin);
m_file.Read (pOut, len);
m_file.Seek (llCurFile, CFile::begin);
m_AvgTimePerFrame = m_rtDuration * len / (m_llFileSize-m_llOffset);
return S_OK;
}
HRESULT CFlacStream::GetMediaType(int iPosition, CMediaType* pmt)
{
CAutoLock cAutoLock(m_pFilter->pStateLock());
if(iPosition == 0)
{
pmt->majortype = MEDIATYPE_Audio;
pmt->subtype = MEDIASUBTYPE_FLAC_FRAMED;
pmt->formattype = FORMAT_WaveFormatEx;
WAVEFORMATEX* wfe = (WAVEFORMATEX*)pmt->AllocFormatBuffer(sizeof(WAVEFORMATEX));
memset(wfe, 0, sizeof(WAVEFORMATEX));
wfe->cbSize = sizeof(WAVEFORMATEX);
wfe->wFormatTag = WAVE_FORMAT_FLAC;
wfe->nSamplesPerSec = m_nSamplesPerSec;
wfe->nAvgBytesPerSec = m_nAvgBytesPerSec;
wfe->nChannels = m_nChannels;
wfe->nBlockAlign = 1;
wfe->wBitsPerSample = m_wBitsPerSample;
}
else
{
return VFW_S_NO_MORE_ITEMS;
}
pmt->SetTemporalCompression(FALSE);
return S_OK;
}
HRESULT CFlacStream::CheckMediaType(const CMediaType* pmt)
{
if ( pmt->majortype == MEDIATYPE_Audio
&& pmt->subtype == MEDIASUBTYPE_FLAC_FRAMED
&& pmt->formattype == FORMAT_WaveFormatEx
&& ((WAVEFORMATEX*)pmt->pbFormat)->wFormatTag == WAVE_FORMAT_FLAC)
return S_OK;
else
return E_INVALIDARG;
}
void CFlacStream::UpdateFromMetadata (void* pBuffer)
{
const FLAC__StreamMetadata* pMetadata = (const FLAC__StreamMetadata*) pBuffer;
m_nMaxFrameSize = pMetadata->data.stream_info.max_framesize;
m_nSamplesPerSec = pMetadata->data.stream_info.sample_rate;
m_nChannels = pMetadata->data.stream_info.channels;
m_wBitsPerSample = pMetadata->data.stream_info.bits_per_sample;
m_i64TotalNumSamples = pMetadata->data.stream_info.total_samples;
m_nAvgBytesPerSec = (m_nChannels * (m_wBitsPerSample >> 3)) * m_nSamplesPerSec;
// === Init members from base classes
GetFileSizeEx (m_file.m_hFile, (LARGE_INTEGER*)&m_llFileSize);
m_rtDuration = (m_i64TotalNumSamples * UNITS) / m_nSamplesPerSec;
m_rtStop = m_rtDuration;
m_AvgTimePerFrame = (m_nMaxFrameSize + pMetadata->data.stream_info.min_framesize) * m_rtDuration / 2 / m_llFileSize;
}
FLAC__StreamDecoderReadStatus StreamDecoderRead(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data)
{
CFlacStream* pThis = static_cast<CFlacStream*> (client_data);
UINT nRead;
nRead = pThis->GetFile()->Read (buffer, *bytes);
pThis->m_bIsEOF = (nRead != *bytes);
*bytes = nRead;
return (*bytes == 0) ? FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM : FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
}
FLAC__StreamDecoderSeekStatus StreamDecoderSeek(const FLAC__StreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data)
{
CFlacStream* pThis = static_cast<CFlacStream*> (client_data);
pThis->m_bIsEOF = false;
pThis->GetFile()->Seek (absolute_byte_offset, CFile::begin);
return FLAC__STREAM_DECODER_SEEK_STATUS_OK;
}
FLAC__StreamDecoderTellStatus StreamDecoderTell(const FLAC__StreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
{
CFlacStream* pThis = static_cast<CFlacStream*> (client_data);
*absolute_byte_offset = pThis->GetFile()->GetPosition();
return FLAC__STREAM_DECODER_TELL_STATUS_OK;
}
FLAC__StreamDecoderLengthStatus StreamDecoderLength(const FLAC__StreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data)
{
CFlacStream* pThis = static_cast<CFlacStream*> (client_data);
CFile* pFile = pThis->GetFile();
if (pFile == NULL)
return FLAC__STREAM_DECODER_LENGTH_STATUS_UNSUPPORTED;
else
{
*stream_length = pFile->GetLength();
return FLAC__STREAM_DECODER_LENGTH_STATUS_OK;
}
}
FLAC__bool StreamDecoderEof(const FLAC__StreamDecoder *decoder, void *client_data)
{
CFlacStream* pThis = static_cast<CFlacStream*> (client_data);
return pThis->m_bIsEOF;
}
FLAC__StreamDecoderWriteStatus StreamDecoderWrite(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
{
CFlacStream* pThis = static_cast<CFlacStream*> (client_data);
UNUSED_ALWAYS(pThis);
return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
}
void StreamDecoderError(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
{
}
void StreamDecoderMetadata(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
{
CFlacStream* pThis = static_cast<CFlacStream*> (client_data);
if (pThis)
pThis->UpdateFromMetadata ((void*)metadata);
}
|