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Sweden-Number/dlls/quartz/mpegsplit.c

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/*
* MPEG Splitter Filter
*
* Copyright 2003 Robert Shearman
* Copyright 2004-2005 Christian Costa
* Copyright 2007 Chris Robinson
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <assert.h>
#include <math.h>
#include "quartz_private.h"
#include "control_private.h"
#include "pin.h"
#include "uuids.h"
#include "mmreg.h"
#include "vfwmsgs.h"
#include "mmsystem.h"
#include "winternl.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#include "parser.h"
WINE_DEFAULT_DEBUG_CHANNEL(quartz);
#define SEQUENCE_HEADER_CODE 0xB3
#define PACK_START_CODE 0xBA
#define SYSTEM_START_CODE 0xBB
#define AUDIO_ELEMENTARY_STREAM 0xC0
#define VIDEO_ELEMENTARY_STREAM 0xE0
#define MPEG_SYSTEM_HEADER 3
#define MPEG_VIDEO_HEADER 2
#define MPEG_AUDIO_HEADER 1
#define MPEG_NO_HEADER 0
typedef struct MPEGSplitterImpl
{
ParserImpl Parser;
IMediaSample *pCurrentSample;
LONGLONG EndOfFile;
} MPEGSplitterImpl;
static int MPEGSplitter_head_check(const BYTE *header)
{
/* If this is a possible start code, check for a system or video header */
if (header[0] == 0 && header[1] == 0 && header[2] == 1)
{
/* Check if we got a system or elementary stream start code */
if (header[3] == PACK_START_CODE ||
header[3] == VIDEO_ELEMENTARY_STREAM ||
header[3] == AUDIO_ELEMENTARY_STREAM)
return MPEG_SYSTEM_HEADER;
/* Check for a MPEG video sequence start code */
if (header[3] == SEQUENCE_HEADER_CODE)
return MPEG_VIDEO_HEADER;
}
/* This should give a good guess if we have an MPEG audio header */
if(header[0] == 0xff && ((header[1]>>5)&0x7) == 0x7 &&
((header[1]>>1)&0x3) != 0 && ((header[2]>>4)&0xf) != 0xf &&
((header[2]>>2)&0x3) != 0x3)
return MPEG_AUDIO_HEADER;
/* Nothing yet.. */
return MPEG_NO_HEADER;
}
static HRESULT MPEGSplitter_process_sample(LPVOID iface, IMediaSample * pSample)
{
MPEGSplitterImpl *This = (MPEGSplitterImpl*)iface;
LPBYTE pbSrcStream = NULL;
DWORD cbSrcStream = 0;
DWORD used_bytes = 0;
REFERENCE_TIME tStart, tStop;
HRESULT hr;
BYTE *pbDstStream;
DWORD cbDstStream;
long remaining_bytes = 0;
Parser_OutputPin * pOutputPin;
DWORD bytes_written = 0;
pOutputPin = (Parser_OutputPin*)This->Parser.ppPins[1];
hr = IMediaSample_GetTime(pSample, &tStart, &tStop);
if (SUCCEEDED(hr))
{
cbSrcStream = IMediaSample_GetActualDataLength(pSample);
hr = IMediaSample_GetPointer(pSample, &pbSrcStream);
}
/* trace removed for performance reasons */
/* TRACE("(%p), %llu -> %llu\n", pSample, tStart, tStop); */
if (This->pCurrentSample)
bytes_written = IMediaSample_GetActualDataLength(This->pCurrentSample);
while (hr == S_OK && used_bytes < cbSrcStream)
{
remaining_bytes = (long)(This->EndOfFile - BYTES_FROM_MEDIATIME(tStart) - used_bytes);
if (remaining_bytes <= 0)
break;
if (!This->pCurrentSample)
{
/* cache media sample until it is ready to be despatched
* (i.e. we reach the end of the chunk) */
hr = OutputPin_GetDeliveryBuffer(&pOutputPin->pin, &This->pCurrentSample, NULL, NULL, 0);
if (FAILED(hr))
{
TRACE("Skipping sending sample due to error (%x)\n", hr);
This->pCurrentSample = NULL;
break;
}
IMediaSample_SetTime(This->pCurrentSample, NULL, NULL);
hr = IMediaSample_SetActualDataLength(This->pCurrentSample, 0);
assert(hr == S_OK);
bytes_written = 0;
}
hr = IMediaSample_GetPointer(This->pCurrentSample, &pbDstStream);
if (SUCCEEDED(hr))
{
cbDstStream = IMediaSample_GetSize(This->pCurrentSample);
remaining_bytes = min(remaining_bytes, (long)(cbDstStream - bytes_written));
assert(remaining_bytes >= 0);
/* trace removed for performance reasons */
/* TRACE("remaining_bytes: %d, cbSrcStream: 0x%x\n", remaining_bytes, cbSrcStream); */
}
if (remaining_bytes <= (long)(cbSrcStream-used_bytes))
{
if (SUCCEEDED(hr))
{
memcpy(pbDstStream + bytes_written, pbSrcStream + used_bytes, remaining_bytes);
bytes_written += remaining_bytes;
hr = IMediaSample_SetActualDataLength(This->pCurrentSample, bytes_written);
assert(hr == S_OK);
used_bytes += remaining_bytes;
}
if (SUCCEEDED(hr))
{
REFERENCE_TIME tMPEGStart, tMPEGStop;
pOutputPin->dwSamplesProcessed = (BYTES_FROM_MEDIATIME(tStart)+used_bytes) / pOutputPin->dwSampleSize;
tMPEGStart = (tStart + MEDIATIME_FROM_BYTES(used_bytes-bytes_written)) /
(pOutputPin->fSamplesPerSec*pOutputPin->dwSampleSize);
tMPEGStop = (tStart + MEDIATIME_FROM_BYTES(used_bytes)) /
(pOutputPin->fSamplesPerSec*pOutputPin->dwSampleSize);
/* If the start of the sample has a valid MPEG header, it's a
* sync point */
if (MPEGSplitter_head_check(pbDstStream) == MPEG_AUDIO_HEADER)
IMediaSample_SetSyncPoint(This->pCurrentSample, TRUE);
else
IMediaSample_SetSyncPoint(This->pCurrentSample, FALSE);
IMediaSample_SetTime(This->pCurrentSample, &tMPEGStart, &tMPEGStop);
hr = OutputPin_SendSample(&pOutputPin->pin, This->pCurrentSample);
if (FAILED(hr))
WARN("Error sending sample (%x)\n", hr);
}
if (This->pCurrentSample)
IMediaSample_Release(This->pCurrentSample);
This->pCurrentSample = NULL;
}
else
{
if (SUCCEEDED(hr))
{
memcpy(pbDstStream + bytes_written, pbSrcStream + used_bytes, cbSrcStream - used_bytes);
bytes_written += cbSrcStream - used_bytes;
IMediaSample_SetActualDataLength(This->pCurrentSample, bytes_written);
used_bytes += cbSrcStream - used_bytes;
}
}
}
if (BYTES_FROM_MEDIATIME(tStop) >= This->EndOfFile)
{
int i;
TRACE("End of file reached (%d out of %d bytes used)\n", used_bytes, cbSrcStream);
if (This->pCurrentSample)
{
/* Make sure the last bit of data, if any, is sent */
if (IMediaSample_GetActualDataLength(This->pCurrentSample) > 0)
{
REFERENCE_TIME tMPEGStart, tMPEGStop;
pOutputPin->dwSamplesProcessed = (BYTES_FROM_MEDIATIME(tStart)+used_bytes) / pOutputPin->dwSampleSize;
tMPEGStart = (tStart + MEDIATIME_FROM_BYTES(used_bytes-bytes_written)) /
(pOutputPin->fSamplesPerSec*pOutputPin->dwSampleSize);
tMPEGStop = (tStart + MEDIATIME_FROM_BYTES(used_bytes)) /
(pOutputPin->fSamplesPerSec*pOutputPin->dwSampleSize);
if (MPEGSplitter_head_check(pbDstStream) == MPEG_AUDIO_HEADER)
IMediaSample_SetSyncPoint(This->pCurrentSample, TRUE);
else
IMediaSample_SetSyncPoint(This->pCurrentSample, FALSE);
IMediaSample_SetTime(This->pCurrentSample, &tMPEGStart, &tMPEGStop);
hr = OutputPin_SendSample(&pOutputPin->pin, This->pCurrentSample);
if (FAILED(hr))
WARN("Error sending sample (%x)\n", hr);
}
IMediaSample_Release(This->pCurrentSample);
}
This->pCurrentSample = NULL;
for (i = 0; i < This->Parser.cStreams; i++)
{
IPin* ppin;
HRESULT hr;
TRACE("Send End Of Stream to output pin %d\n", i);
hr = IPin_ConnectedTo(This->Parser.ppPins[i+1], &ppin);
if (SUCCEEDED(hr))
{
hr = IPin_EndOfStream(ppin);
IPin_Release(ppin);
}
if (FAILED(hr))
WARN("Error sending EndOfStream to pin %d (%x)\n", i, hr);
}
/* Force the pullpin thread to stop */
hr = S_FALSE;
}
return hr;
}
static HRESULT MPEGSplitter_query_accept(LPVOID iface, const AM_MEDIA_TYPE *pmt)
{
if (!IsEqualIID(&pmt->majortype, &MEDIATYPE_Stream))
return S_FALSE;
if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1Audio))
return S_OK;
if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1Video))
FIXME("MPEG-1 video streams not yet supported.\n");
else if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1System))
FIXME("MPEG-1 system streams not yet supported.\n");
else if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1VideoCD))
FIXME("MPEG-1 VideoCD streams not yet supported.\n");
return S_FALSE;
}
static const WCHAR wszAudioStream[] = {'A','u','d','i','o',0};
static const WCHAR wszVideoStream[] = {'V','i','d','e','o',0};
static HRESULT MPEGSplitter_init_audio(MPEGSplitterImpl *This, const BYTE *header, PIN_INFO *ppiOutput, AM_MEDIA_TYPE *pamt)
{
static const DWORD freqs[10] = { 44100, 48000, 32000, 22050, 24000,
16000, 11025, 12000, 8000, 0 };
static const DWORD tabsel_123[2][3][16] = {
{ {0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,},
{0,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,},
{0,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,} },
{ {0,32,48,56,64,80,96,112,128,144,160,176,192,224,256,},
{0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,},
{0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,} }
};
WAVEFORMATEX *format;
int bitrate_index;
int freq_index;
int mode_ext;
int emphasis;
int padding;
int lsf = 1;
int mpeg1;
int layer;
int mode;
ZeroMemory(pamt, sizeof(*pamt));
ppiOutput->dir = PINDIR_OUTPUT;
ppiOutput->pFilter = (IBaseFilter*)This;
wsprintfW(ppiOutput->achName, wszAudioStream);
memcpy(&pamt->formattype, &FORMAT_WaveFormatEx, sizeof(GUID));
memcpy(&pamt->majortype, &MEDIATYPE_Audio, sizeof(GUID));
memcpy(&pamt->subtype, &MEDIASUBTYPE_MPEG1AudioPayload, sizeof(GUID));
pamt->lSampleSize = 0;
pamt->bFixedSizeSamples = TRUE;
pamt->bTemporalCompression = 0;
mpeg1 = (header[1]>>4)&0x1;
if (mpeg1)
lsf = ((header[1]>>3)&0x1)^1;
layer = 4-((header[1]>>1)&0x3);
bitrate_index = ((header[2]>>4)&0xf);
freq_index = ((header[2]>>2)&0x3) + (mpeg1?(lsf*3):6);
padding = ((header[2]>>1)&0x1);
mode = ((header[3]>>6)&0x3);
mode_ext = ((header[3]>>4)&0x3);
emphasis = ((header[3]>>0)&0x3);
pamt->cbFormat = ((layer==3)? sizeof(MPEGLAYER3WAVEFORMAT) :
sizeof(MPEG1WAVEFORMAT));
pamt->pbFormat = CoTaskMemAlloc(pamt->cbFormat);
if (!pamt->pbFormat)
return E_OUTOFMEMORY;
ZeroMemory(pamt->pbFormat, pamt->cbFormat);
format = (WAVEFORMATEX*)pamt->pbFormat;
format->wFormatTag = ((layer == 3) ? WAVE_FORMAT_MPEGLAYER3 :
WAVE_FORMAT_MPEG);
format->nChannels = ((mode == 3) ? 1 : 2);
format->nSamplesPerSec = freqs[freq_index];
format->nAvgBytesPerSec = tabsel_123[lsf][layer-1][bitrate_index] * 1000 / 8;
if (format->nAvgBytesPerSec == 0)
{
WARN("Variable-bitrate audio is not supported.\n");
return E_FAIL;
}
if (layer == 3)
format->nBlockAlign = format->nAvgBytesPerSec * 8 * 144 /
(format->nSamplesPerSec<<lsf) +
(padding - 4);
else if (layer == 2)
format->nBlockAlign = format->nAvgBytesPerSec * 8 * 144 /
format->nSamplesPerSec + (padding - 4);
else
format->nBlockAlign = ((format->nAvgBytesPerSec * 8 * 12 /
format->nSamplesPerSec + padding) << 2) - 4;
format->wBitsPerSample = 0;
if (layer == 3)
{
MPEGLAYER3WAVEFORMAT *mp3format = (MPEGLAYER3WAVEFORMAT*)format;
format->cbSize = MPEGLAYER3_WFX_EXTRA_BYTES;
mp3format->wID = MPEGLAYER3_ID_MPEG;
mp3format->fdwFlags = (padding ?
MPEGLAYER3_FLAG_PADDING_OFF :
MPEGLAYER3_FLAG_PADDING_ON);
mp3format->nBlockSize = format->nBlockAlign;
mp3format->nFramesPerBlock = 1;
/* Beware the evil magic numbers. This struct is apparently horribly
* under-documented, and the only references I could find had it being
* set to this with no real explanation. It works fine though, so I'm
* not complaining (yet).
*/
mp3format->nCodecDelay = 1393;
}
else
{
MPEG1WAVEFORMAT *mpgformat = (MPEG1WAVEFORMAT*)format;
format->cbSize = 22;
mpgformat->fwHeadLayer = ((layer == 1) ? ACM_MPEG_LAYER1 :
((layer == 2) ? ACM_MPEG_LAYER2 :
ACM_MPEG_LAYER3));
mpgformat->dwHeadBitrate = format->nAvgBytesPerSec * 8;
mpgformat->fwHeadMode = ((mode == 3) ? ACM_MPEG_SINGLECHANNEL :
((mode == 2) ? ACM_MPEG_DUALCHANNEL :
((mode == 1) ? ACM_MPEG_JOINTSTEREO :
ACM_MPEG_STEREO)));
mpgformat->fwHeadModeExt = ((mode == 1) ? 0x0F : (1<<mode_ext));
mpgformat->wHeadEmphasis = emphasis + 1;
mpgformat->fwHeadFlags = ACM_MPEG_ID_MPEG1;
}
pamt->subtype.Data1 = format->wFormatTag;
TRACE("MPEG audio stream detected:\n"
"\tLayer %d (%#x)\n"
"\tFrequency: %d\n"
"\tChannels: %d (%d)\n"
"\tBytesPerSec: %d\n",
layer, format->wFormatTag, format->nSamplesPerSec,
format->nChannels, mode, format->nAvgBytesPerSec);
dump_AM_MEDIA_TYPE(pamt);
return S_OK;
}
static HRESULT MPEGSplitter_pre_connect(IPin *iface, IPin *pConnectPin)
{
PullPin *pPin = (PullPin *)iface;
MPEGSplitterImpl *This = (MPEGSplitterImpl*)pPin->pin.pinInfo.pFilter;
ALLOCATOR_PROPERTIES props;
HRESULT hr;
LONGLONG pos = 0; /* in bytes */
BYTE header[4];
int streamtype = 0;
LONGLONG total, avail;
AM_MEDIA_TYPE amt;
PIN_INFO piOutput;
IAsyncReader_Length(pPin->pReader, &total, &avail);
This->EndOfFile = total;
hr = IAsyncReader_SyncRead(pPin->pReader, pos, 4, (LPVOID)&header[0]);
if (SUCCEEDED(hr))
pos += 4;
while(SUCCEEDED(hr) && !(streamtype=MPEGSplitter_head_check(header)))
{
/* No valid header yet; shift by a byte and check again */
memcpy(header, header+1, 3);
hr = IAsyncReader_SyncRead(pPin->pReader, pos++, 1, (LPVOID)&header[3]);
}
if (FAILED(hr))
return hr;
switch(streamtype)
{
case MPEG_AUDIO_HEADER:
hr = MPEGSplitter_init_audio(This, header, &piOutput, &amt);
if (SUCCEEDED(hr))
{
WAVEFORMATEX *format = (WAVEFORMATEX*)amt.pbFormat;
props.cbAlign = 1;
props.cbPrefix = 0;
/* Make the output buffer a multiple of the frame size */
props.cbBuffer = 0x4000 / format->nBlockAlign *
format->nBlockAlign;
props.cBuffers = 1;
hr = Parser_AddPin(&(This->Parser), &piOutput, &props, &amt,
(float)format->nAvgBytesPerSec /
(float)format->nBlockAlign,
format->nBlockAlign,
total);
}
if (FAILED(hr))
{
if (amt.pbFormat)
CoTaskMemFree(amt.pbFormat);
ERR("Could not create pin for MPEG audio stream (%x)\n", hr);
}
break;
case MPEG_VIDEO_HEADER:
FIXME("MPEG video processing not yet supported!\n");
hr = E_FAIL;
break;
case MPEG_SYSTEM_HEADER:
FIXME("MPEG system streams not yet supported!\n");
hr = E_FAIL;
break;
default:
break;
}
return hr;
}
static HRESULT MPEGSplitter_cleanup(LPVOID iface)
{
MPEGSplitterImpl *This = (MPEGSplitterImpl*)iface;
TRACE("(%p)->()\n", This);
if (This->pCurrentSample)
IMediaSample_Release(This->pCurrentSample);
This->pCurrentSample = NULL;
return S_OK;
}
HRESULT MPEGSplitter_create(IUnknown * pUnkOuter, LPVOID * ppv)
{
MPEGSplitterImpl *This;
HRESULT hr = E_FAIL;
TRACE("(%p, %p)\n", pUnkOuter, ppv);
*ppv = NULL;
if (pUnkOuter)
return CLASS_E_NOAGGREGATION;
This = CoTaskMemAlloc(sizeof(MPEGSplitterImpl));
if (!This)
return E_OUTOFMEMORY;
ZeroMemory(This, sizeof(MPEGSplitterImpl));
hr = Parser_Create(&(This->Parser), &CLSID_MPEG1Splitter, MPEGSplitter_process_sample, MPEGSplitter_query_accept, MPEGSplitter_pre_connect, MPEGSplitter_cleanup);
if (FAILED(hr))
{
CoTaskMemFree(This);
return hr;
}
/* Note: This memory is managed by the parser filter once created */
*ppv = (LPVOID)This;
return hr;
}
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