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wine/dlls/quartz/avisplit.c
Nikolay Sivov 5fb58eae3b quartz: Minor cleanup of returned interface pointers. 
Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
2015-10-21 21:09:10 +09:00

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/*
* AVI Splitter Filter
*
* Copyright 2003 Robert Shearman
* Copyright 2004-2005 Christian Costa
* Copyright 2008 Maarten Lankhorst
*
* 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
*/
/* FIXME:
* - Reference leaks, if they still exist
* - Files without an index are not handled correctly yet.
* - When stopping/starting, a sample is lost. This should be compensated by
* keeping track of previous index/position.
* - Debugging channels are noisy at the moment, especially with thread
* related messages, however this is the only correct thing to do right now,
* since wine doesn't correctly handle all messages yet.
*/
#include "quartz_private.h"
#include "pin.h"
#include "uuids.h"
#include "vfw.h"
#include "aviriff.h"
#include "vfwmsgs.h"
#include "amvideo.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#include <math.h>
#include <assert.h>
#include "parser.h"
#define TWOCCFromFOURCC(fcc) HIWORD(fcc)
/* four character codes used in AVI files */
#define ckidINFO mmioFOURCC('I','N','F','O')
#define ckidREC mmioFOURCC('R','E','C',' ')
WINE_DEFAULT_DEBUG_CHANNEL(quartz);
typedef struct StreamData
{
DWORD dwSampleSize;
FLOAT fSamplesPerSec;
DWORD dwLength;
AVISTREAMHEADER streamheader;
DWORD entries;
AVISTDINDEX **stdindex;
DWORD frames;
BOOL seek;
/* Position, in index units */
DWORD pos, pos_next, index, index_next;
/* Packet handling: a thread is created and waits on the packet event handle
* On an event acquire the sample lock, addref the sample and set it to NULL,
* then queue a new packet.
*/
HANDLE thread, packet_queued;
IMediaSample *sample;
/* Amount of preroll samples for this stream */
DWORD preroll;
} StreamData;
typedef struct AVISplitterImpl
{
ParserImpl Parser;
RIFFCHUNK CurrentChunk;
LONGLONG CurrentChunkOffset; /* in media time */
LONGLONG EndOfFile;
AVIMAINHEADER AviHeader;
AVIEXTHEADER ExtHeader;
AVIOLDINDEX *oldindex;
DWORD offset;
StreamData *streams;
} AVISplitterImpl;
struct thread_args {
AVISplitterImpl *This;
DWORD stream;
};
static inline AVISplitterImpl *impl_from_IMediaSeeking( IMediaSeeking *iface )
{
return CONTAINING_RECORD(iface, AVISplitterImpl, Parser.sourceSeeking.IMediaSeeking_iface);
}
/* The threading stuff cries for an explanation
*
* PullPin starts processing and calls AVISplitter_first_request
* AVISplitter_first_request creates a thread for each stream
* A stream can be audio, video, subtitles or something undefined.
*
* AVISplitter_first_request loads a single packet to each but one stream,
* and queues it for that last stream. This is to prevent WaitForNext to time
* out badly.
*
* The processing loop is entered. It calls IAsyncReader_WaitForNext in the
* PullPin. Every time it receives a packet, it will call AVISplitter_Sample
* AVISplitter_Sample will signal the relevant thread that a new sample is
* arrived, when that thread is ready it will read the packet and transmits
* it downstream with AVISplitter_Receive
*
* Threads terminate upon receiving NULL as packet or when ANY error code
* != S_OK occurs. This means that any error is fatal to processing.
*/
static HRESULT AVISplitter_SendEndOfFile(AVISplitterImpl *This, DWORD streamnumber)
{
IPin* ppin = NULL;
HRESULT hr;
TRACE("End of file reached\n");
hr = IPin_ConnectedTo(This->Parser.ppPins[streamnumber+1], &ppin);
if (SUCCEEDED(hr))
{
hr = IPin_EndOfStream(ppin);
IPin_Release(ppin);
}
TRACE("--> %x\n", hr);
/* Force the pullpin thread to stop */
return S_FALSE;
}
/* Thread worker horse */
static HRESULT AVISplitter_next_request(AVISplitterImpl *This, DWORD streamnumber)
{
StreamData *stream = This->streams + streamnumber;
PullPin *pin = This->Parser.pInputPin;
IMediaSample *sample = NULL;
HRESULT hr;
ULONG ref;
TRACE("(%p, %u)->()\n", This, streamnumber);
hr = IMemAllocator_GetBuffer(pin->pAlloc, &sample, NULL, NULL, 0);
if (hr != S_OK)
ERR("... %08x?\n", hr);
if (SUCCEEDED(hr))
{
LONGLONG rtSampleStart;
/* Add 4 for the next header, which should hopefully work */
LONGLONG rtSampleStop;
stream->pos = stream->pos_next;
stream->index = stream->index_next;
IMediaSample_SetDiscontinuity(sample, stream->seek);
stream->seek = FALSE;
if (stream->preroll)
{
--stream->preroll;
IMediaSample_SetPreroll(sample, TRUE);
}
else
IMediaSample_SetPreroll(sample, FALSE);
IMediaSample_SetSyncPoint(sample, TRUE);
if (stream->stdindex)
{
AVISTDINDEX *index = stream->stdindex[stream->index];
AVISTDINDEX_ENTRY *entry = &index->aIndex[stream->pos];
/* End of file */
if (stream->index >= stream->entries)
{
TRACE("END OF STREAM ON %u\n", streamnumber);
IMediaSample_Release(sample);
return S_FALSE;
}
rtSampleStart = index->qwBaseOffset;
rtSampleStart += entry->dwOffset;
rtSampleStart = MEDIATIME_FROM_BYTES(rtSampleStart);
++stream->pos_next;
if (index->nEntriesInUse == stream->pos_next)
{
stream->pos_next = 0;
++stream->index_next;
}
rtSampleStop = rtSampleStart + MEDIATIME_FROM_BYTES(entry->dwSize & ~(1u << 31));
TRACE("offset(%u) size(%u)\n", (DWORD)BYTES_FROM_MEDIATIME(rtSampleStart), (DWORD)BYTES_FROM_MEDIATIME(rtSampleStop - rtSampleStart));
}
else if (This->oldindex)
{
DWORD flags = This->oldindex->aIndex[stream->pos].dwFlags;
DWORD size = This->oldindex->aIndex[stream->pos].dwSize;
/* End of file */
if (stream->index)
{
TRACE("END OF STREAM ON %u\n", streamnumber);
IMediaSample_Release(sample);
return S_FALSE;
}
rtSampleStart = MEDIATIME_FROM_BYTES(This->offset);
rtSampleStart += MEDIATIME_FROM_BYTES(This->oldindex->aIndex[stream->pos].dwOffset);
rtSampleStop = rtSampleStart + MEDIATIME_FROM_BYTES(size);
if (flags & AVIIF_MIDPART)
{
FIXME("Only stand alone frames are currently handled correctly!\n");
}
if (flags & AVIIF_LIST)
{
FIXME("Not sure if this is handled correctly\n");
rtSampleStart += MEDIATIME_FROM_BYTES(sizeof(RIFFLIST));
rtSampleStop += MEDIATIME_FROM_BYTES(sizeof(RIFFLIST));
}
else
{
rtSampleStart += MEDIATIME_FROM_BYTES(sizeof(RIFFCHUNK));
rtSampleStop += MEDIATIME_FROM_BYTES(sizeof(RIFFCHUNK));
}
/* Slow way of finding next index */
do {
stream->pos_next++;
} while (stream->pos_next * sizeof(This->oldindex->aIndex[0]) < This->oldindex->cb
&& StreamFromFOURCC(This->oldindex->aIndex[stream->pos_next].dwChunkId) != streamnumber);
/* End of file soon */
if (stream->pos_next * sizeof(This->oldindex->aIndex[0]) >= This->oldindex->cb)
{
stream->pos_next = 0;
++stream->index_next;
}
}
else /* TODO: Generate an index automagically */
{
ERR("CAN'T PLAY WITHOUT AN INDEX! SOS! SOS! SOS!\n");
assert(0);
}
if (rtSampleStart != rtSampleStop)
{
IMediaSample_SetTime(sample, &rtSampleStart, &rtSampleStop);
hr = IAsyncReader_Request(pin->pReader, sample, streamnumber);
if (FAILED(hr))
{
ref = IMediaSample_Release(sample);
assert(ref == 0);
}
}
else
{
stream->sample = sample;
IMediaSample_SetActualDataLength(sample, 0);
SetEvent(stream->packet_queued);
}
}
else
{
if (sample)
{
ERR("There should be no sample!\n");
ref = IMediaSample_Release(sample);
assert(ref == 0);
}
}
TRACE("--> %08x\n", hr);
return hr;
}
static HRESULT AVISplitter_Receive(AVISplitterImpl *This, IMediaSample *sample, DWORD streamnumber)
{
Parser_OutputPin *pin = unsafe_impl_Parser_OutputPin_from_IPin(This->Parser.ppPins[1+streamnumber]);
HRESULT hr;
LONGLONG start, stop, rtstart, rtstop;
StreamData *stream = &This->streams[streamnumber];
start = pin->dwSamplesProcessed;
start *= stream->streamheader.dwScale;
start *= 10000000;
start /= stream->streamheader.dwRate;
if (stream->streamheader.dwSampleSize)
{
ULONG len = IMediaSample_GetActualDataLength(sample);
ULONG size = stream->streamheader.dwSampleSize;
pin->dwSamplesProcessed += len / size;
}
else
++pin->dwSamplesProcessed;
stop = pin->dwSamplesProcessed;
stop *= stream->streamheader.dwScale;
stop *= 10000000;
stop /= stream->streamheader.dwRate;
if (IMediaSample_IsDiscontinuity(sample) == S_OK) {
IPin *victim;
EnterCriticalSection(&This->Parser.filter.csFilter);
pin->pin.pin.tStart = start;
pin->pin.pin.dRate = This->Parser.sourceSeeking.dRate;
hr = IPin_ConnectedTo(&pin->pin.pin.IPin_iface, &victim);
if (hr == S_OK)
{
hr = IPin_NewSegment(victim, start, This->Parser.sourceSeeking.llStop,
This->Parser.sourceSeeking.dRate);
if (hr != S_OK)
FIXME("NewSegment returns %08x\n", hr);
IPin_Release(victim);
}
LeaveCriticalSection(&This->Parser.filter.csFilter);
if (hr != S_OK)
return hr;
}
rtstart = (double)(start - pin->pin.pin.tStart) / pin->pin.pin.dRate;
rtstop = (double)(stop - pin->pin.pin.tStart) / pin->pin.pin.dRate;
IMediaSample_SetMediaTime(sample, &start, &stop);
IMediaSample_SetTime(sample, &rtstart, &rtstop);
IMediaSample_SetMediaTime(sample, &start, &stop);
hr = BaseOutputPinImpl_Deliver(&pin->pin, sample);
/* Uncomment this if you want to debug the time differences between the
* different streams, it is useful for that
*
FIXME("stream %u, hr: %08x, Start: %u.%03u, Stop: %u.%03u\n", streamnumber, hr,
(DWORD)(start / 10000000), (DWORD)((start / 10000)%1000),
(DWORD)(stop / 10000000), (DWORD)((stop / 10000)%1000));
*/
return hr;
}
static DWORD WINAPI AVISplitter_thread_reader(LPVOID data)
{
struct thread_args *args = data;
AVISplitterImpl *This = args->This;
DWORD streamnumber = args->stream;
HRESULT hr = S_OK;
do
{
HRESULT nexthr = S_FALSE;
IMediaSample *sample;
WaitForSingleObject(This->streams[streamnumber].packet_queued, INFINITE);
sample = This->streams[streamnumber].sample;
This->streams[streamnumber].sample = NULL;
if (!sample)
break;
nexthr = AVISplitter_next_request(This, streamnumber);
hr = AVISplitter_Receive(This, sample, streamnumber);
if (hr != S_OK)
FIXME("Receiving error: %08x\n", hr);
IMediaSample_Release(sample);
if (hr == S_OK)
hr = nexthr;
if (nexthr == S_FALSE)
AVISplitter_SendEndOfFile(This, streamnumber);
} while (hr == S_OK);
if (hr != S_FALSE)
FIXME("Thread %u terminated with hr %08x!\n", streamnumber, hr);
else
TRACE("Thread %u terminated properly\n", streamnumber);
return hr;
}
static HRESULT AVISplitter_Sample(LPVOID iface, IMediaSample * pSample, DWORD_PTR cookie)
{
AVISplitterImpl *This = iface;
StreamData *stream = This->streams + cookie;
HRESULT hr = S_OK;
if (!IMediaSample_GetActualDataLength(pSample))
{
ERR("Received empty sample\n");
return S_OK;
}
/* Send the sample to whatever thread is appropriate
* That thread should also not have a sample queued at the moment
*/
/* Debugging */
TRACE("(%p)->(%p size: %u, %lu)\n", This, pSample, IMediaSample_GetActualDataLength(pSample), cookie);
assert(cookie < This->Parser.cStreams);
assert(!stream->sample);
assert(WaitForSingleObject(stream->packet_queued, 0) == WAIT_TIMEOUT);
IMediaSample_AddRef(pSample);
stream->sample = pSample;
SetEvent(stream->packet_queued);
return hr;
}
static HRESULT AVISplitter_done_process(LPVOID iface);
/* On the first request we have to be sure that (cStreams-1) samples have
* already been processed, because otherwise some pins might not ever finish
* a Pause state change
*/
static HRESULT AVISplitter_first_request(LPVOID iface)
{
AVISplitterImpl *This = iface;
HRESULT hr = S_OK;
DWORD x;
IMediaSample *sample = NULL;
BOOL have_sample = FALSE;
TRACE("(%p)->()\n", This);
for (x = 0; x < This->Parser.cStreams; ++x)
{
StreamData *stream = This->streams + x;
/* Nothing should be running at this point */
assert(!stream->thread);
assert(!sample);
/* It could be we asked the thread to terminate, and the thread
* already terminated before receiving the deathwish */
ResetEvent(stream->packet_queued);
stream->pos_next = stream->pos;
stream->index_next = stream->index;
/* This was sent after stopped->paused or stopped->playing, so set seek */
stream->seek = TRUE;
/* There should be a packet queued from AVISplitter_next_request last time
* It needs to be done now because this is the only way to ensure that every
* stream will have at least 1 packet processed
* If this is done after the threads start it could go all awkward and we
* would have no guarantees that it's successful at all
*/
if (have_sample)
{
DWORD_PTR dwUser = ~0;
hr = IAsyncReader_WaitForNext(This->Parser.pInputPin->pReader, 10000, &sample, &dwUser);
assert(hr == S_OK);
assert(sample);
AVISplitter_Sample(iface, sample, dwUser);
IMediaSample_Release(sample);
}
hr = AVISplitter_next_request(This, x);
TRACE("-->%08x\n", hr);
/* Could be an EOF instead */
have_sample = (hr == S_OK);
if (hr == S_FALSE)
AVISplitter_SendEndOfFile(This, x);
if (FAILED(hr) && hr != VFW_E_NOT_CONNECTED)
break;
hr = S_OK;
}
/* FIXME: Don't do this for each pin that sent an EOF */
for (x = 0; x < This->Parser.cStreams && SUCCEEDED(hr); ++x)
{
struct thread_args *args;
DWORD tid;
if ((This->streams[x].stdindex && This->streams[x].index_next >= This->streams[x].entries) ||
(!This->streams[x].stdindex && This->streams[x].index_next))
{
This->streams[x].thread = NULL;
continue;
}
args = CoTaskMemAlloc(sizeof(*args));
args->This = This;
args->stream = x;
This->streams[x].thread = CreateThread(NULL, 0, AVISplitter_thread_reader, args, 0, &tid);
TRACE("Created stream %u thread 0x%08x\n", x, tid);
}
if (FAILED(hr))
ERR("Horsemen of the apocalypse came to bring error 0x%08x\n", hr);
return hr;
}
static HRESULT AVISplitter_done_process(LPVOID iface)
{
AVISplitterImpl *This = iface;
DWORD x;
ULONG ref;
for (x = 0; x < This->Parser.cStreams; ++x)
{
StreamData *stream = This->streams + x;
TRACE("Waiting for %u to terminate\n", x);
/* Make the thread return first */
SetEvent(stream->packet_queued);
assert(WaitForSingleObject(stream->thread, 100000) != WAIT_TIMEOUT);
CloseHandle(stream->thread);
stream->thread = NULL;
if (stream->sample)
{
ref = IMediaSample_Release(stream->sample);
assert(ref == 0);
}
stream->sample = NULL;
ResetEvent(stream->packet_queued);
}
TRACE("All threads are now terminated\n");
return S_OK;
}
static HRESULT AVISplitter_QueryAccept(LPVOID iface, const AM_MEDIA_TYPE * pmt)
{
if (IsEqualIID(&pmt->majortype, &MEDIATYPE_Stream) && IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_Avi))
return S_OK;
return S_FALSE;
}
static HRESULT AVISplitter_ProcessIndex(AVISplitterImpl *This, AVISTDINDEX **index, LONGLONG qwOffset, DWORD cb)
{
AVISTDINDEX *pIndex;
DWORD x;
int rest;
*index = NULL;
if (cb < sizeof(AVISTDINDEX))
{
FIXME("size %u too small\n", cb);
return E_INVALIDARG;
}
pIndex = CoTaskMemAlloc(cb);
if (!pIndex)
return E_OUTOFMEMORY;
IAsyncReader_SyncRead((impl_PullPin_from_IPin(This->Parser.ppPins[0]))->pReader, qwOffset, cb, (BYTE *)pIndex);
rest = cb - sizeof(AVISUPERINDEX) + sizeof(RIFFCHUNK) + sizeof(pIndex->aIndex);
TRACE("FOURCC: %s\n", debugstr_an((char *)&pIndex->fcc, 4));
TRACE("wLongsPerEntry: %hd\n", pIndex->wLongsPerEntry);
TRACE("bIndexSubType: %u\n", pIndex->bIndexSubType);
TRACE("bIndexType: %u\n", pIndex->bIndexType);
TRACE("nEntriesInUse: %u\n", pIndex->nEntriesInUse);
TRACE("dwChunkId: %.4s\n", (char *)&pIndex->dwChunkId);
TRACE("qwBaseOffset: %x%08x\n", (DWORD)(pIndex->qwBaseOffset >> 32), (DWORD)pIndex->qwBaseOffset);
TRACE("dwReserved_3: %u\n", pIndex->dwReserved_3);
if (pIndex->bIndexType != AVI_INDEX_OF_CHUNKS
|| pIndex->wLongsPerEntry != 2
|| rest < (pIndex->nEntriesInUse * sizeof(DWORD) * pIndex->wLongsPerEntry)
|| (pIndex->bIndexSubType != AVI_INDEX_SUB_DEFAULT))
{
FIXME("Invalid index chunk encountered: %u/%u, %u/%u, %u/%u, %u/%u\n",
pIndex->bIndexType, AVI_INDEX_OF_CHUNKS, pIndex->wLongsPerEntry, 2,
rest, (DWORD)(pIndex->nEntriesInUse * sizeof(DWORD) * pIndex->wLongsPerEntry),
pIndex->bIndexSubType, AVI_INDEX_SUB_DEFAULT);
*index = NULL;
return E_INVALIDARG;
}
for (x = 0; x < pIndex->nEntriesInUse; ++x)
{
BOOL keyframe = !(pIndex->aIndex[x].dwSize >> 31);
DWORDLONG offset = pIndex->qwBaseOffset + pIndex->aIndex[x].dwOffset;
TRACE("dwOffset: %x%08x\n", (DWORD)(offset >> 32), (DWORD)offset);
TRACE("dwSize: %u\n", (pIndex->aIndex[x].dwSize & ~(1u << 31)));
TRACE("Frame is a keyframe: %s\n", keyframe ? "yes" : "no");
}
*index = pIndex;
return S_OK;
}
static HRESULT AVISplitter_ProcessOldIndex(AVISplitterImpl *This)
{
ULONGLONG mov_pos = BYTES_FROM_MEDIATIME(This->CurrentChunkOffset) - sizeof(DWORD);
AVIOLDINDEX *pAviOldIndex = This->oldindex;
int relative = -1;
DWORD x;
for (x = 0; x < pAviOldIndex->cb / sizeof(pAviOldIndex->aIndex[0]); ++x)
{
DWORD temp, temp2 = 0, offset, chunkid;
PullPin *pin = This->Parser.pInputPin;
offset = pAviOldIndex->aIndex[x].dwOffset;
chunkid = pAviOldIndex->aIndex[x].dwChunkId;
TRACE("dwChunkId: %.4s\n", (char *)&chunkid);
TRACE("dwFlags: %08x\n", pAviOldIndex->aIndex[x].dwFlags);
TRACE("dwOffset (%s): %08x\n", relative ? "relative" : "absolute", offset);
TRACE("dwSize: %08x\n", pAviOldIndex->aIndex[x].dwSize);
/* Only scan once, or else this will take too long */
if (relative == -1)
{
IAsyncReader_SyncRead(pin->pReader, offset, sizeof(DWORD), (BYTE *)&temp);
relative = (chunkid != temp);
if (chunkid == mmioFOURCC('7','F','x','x')
&& ((char *)&temp)[0] == 'i' && ((char *)&temp)[1] == 'x')
relative = FALSE;
if (relative)
{
if (offset + mov_pos < BYTES_FROM_MEDIATIME(This->EndOfFile))
IAsyncReader_SyncRead(pin->pReader, offset + mov_pos, sizeof(DWORD), (BYTE *)&temp2);
if (chunkid == mmioFOURCC('7','F','x','x')
&& ((char *)&temp2)[0] == 'i' && ((char *)&temp2)[1] == 'x')
{
/* Do nothing, all is great */
}
else if (temp2 != chunkid)
{
ERR("Faulty index or bug in handling: Wanted FCC: %s, Abs FCC: %s (@ %x), Rel FCC: %s (@ %.0x%08x)\n",
debugstr_an((char *)&chunkid, 4), debugstr_an((char *)&temp, 4), offset,
debugstr_an((char *)&temp2, 4), (DWORD)((mov_pos + offset) >> 32), (DWORD)(mov_pos + offset));
relative = -1;
}
else
TRACE("Scanned dwChunkId: %s\n", debugstr_an((char *)&temp2, 4));
}
else if (!relative)
TRACE("Scanned dwChunkId: %s\n", debugstr_an((char *)&temp, 4));
}
/* Only dump one packet */
else break;
}
if (relative == -1)
{
FIXME("Dropping index: no idea whether it is relative or absolute\n");
CoTaskMemFree(This->oldindex);
This->oldindex = NULL;
}
else if (!relative)
This->offset = 0;
else
This->offset = (DWORD)mov_pos;
return S_OK;
}
static HRESULT AVISplitter_ProcessStreamList(AVISplitterImpl * This, const BYTE * pData, DWORD cb, ALLOCATOR_PROPERTIES *props)
{
PIN_INFO piOutput;
const RIFFCHUNK * pChunk;
HRESULT hr;
AM_MEDIA_TYPE amt;
float fSamplesPerSec = 0.0f;
DWORD dwSampleSize = 0;
DWORD dwLength = 0;
DWORD nstdindex = 0;
static const WCHAR wszStreamTemplate[] = {'S','t','r','e','a','m',' ','%','0','2','d',0};
StreamData *stream;
ZeroMemory(&amt, sizeof(amt));
piOutput.dir = PINDIR_OUTPUT;
piOutput.pFilter = (IBaseFilter *)This;
wsprintfW(piOutput.achName, wszStreamTemplate, This->Parser.cStreams);
This->streams = CoTaskMemRealloc(This->streams, sizeof(StreamData) * (This->Parser.cStreams+1));
stream = This->streams + This->Parser.cStreams;
ZeroMemory(stream, sizeof(*stream));
for (pChunk = (const RIFFCHUNK *)pData;
((const BYTE *)pChunk >= pData) && ((const BYTE *)pChunk + sizeof(RIFFCHUNK) < pData + cb) && (pChunk->cb > 0);
pChunk = (const RIFFCHUNK *)((const BYTE*)pChunk + sizeof(RIFFCHUNK) + pChunk->cb)
)
{
switch (pChunk->fcc)
{
case ckidSTREAMHEADER:
{
const AVISTREAMHEADER * pStrHdr = (const AVISTREAMHEADER *)pChunk;
TRACE("processing stream header\n");
stream->streamheader = *pStrHdr;
fSamplesPerSec = (float)pStrHdr->dwRate / (float)pStrHdr->dwScale;
CoTaskMemFree(amt.pbFormat);
amt.pbFormat = NULL;
amt.cbFormat = 0;
switch (pStrHdr->fccType)
{
case streamtypeVIDEO:
amt.formattype = FORMAT_VideoInfo;
break;
case streamtypeAUDIO:
amt.formattype = FORMAT_WaveFormatEx;
break;
default:
FIXME("fccType %.4s not handled yet\n", (const char *)&pStrHdr->fccType);
amt.formattype = FORMAT_None;
}
amt.majortype = MEDIATYPE_Video;
amt.majortype.Data1 = pStrHdr->fccType;
amt.subtype = MEDIATYPE_Video;
amt.subtype.Data1 = pStrHdr->fccHandler;
TRACE("Subtype FCC: %.04s\n", (LPCSTR)&pStrHdr->fccHandler);
amt.lSampleSize = pStrHdr->dwSampleSize;
amt.bFixedSizeSamples = (amt.lSampleSize != 0);
/* FIXME: Is this right? */
if (!amt.lSampleSize)
{
amt.lSampleSize = 1;
dwSampleSize = 1;
}
amt.bTemporalCompression = IsEqualGUID(&amt.majortype, &MEDIATYPE_Video); /* FIXME? */
dwSampleSize = pStrHdr->dwSampleSize;
dwLength = pStrHdr->dwLength;
if (!dwLength)
dwLength = This->AviHeader.dwTotalFrames;
if (pStrHdr->dwSuggestedBufferSize && pStrHdr->dwSuggestedBufferSize > props->cbBuffer)
props->cbBuffer = pStrHdr->dwSuggestedBufferSize;
break;
}
case ckidSTREAMFORMAT:
TRACE("processing stream format data\n");
if (IsEqualIID(&amt.formattype, &FORMAT_VideoInfo))
{
VIDEOINFOHEADER * pvi;
/* biCompression member appears to override the value in the stream header.
* i.e. the stream header can say something completely contradictory to what
* is in the BITMAPINFOHEADER! */
if (pChunk->cb < sizeof(BITMAPINFOHEADER))
{
ERR("Not enough bytes for BITMAPINFOHEADER\n");
return E_FAIL;
}
amt.cbFormat = sizeof(VIDEOINFOHEADER) - sizeof(BITMAPINFOHEADER) + pChunk->cb;
amt.pbFormat = CoTaskMemAlloc(amt.cbFormat);
ZeroMemory(amt.pbFormat, amt.cbFormat);
pvi = (VIDEOINFOHEADER *)amt.pbFormat;
pvi->AvgTimePerFrame = (LONGLONG)(10000000.0 / fSamplesPerSec);
CopyMemory(&pvi->bmiHeader, pChunk + 1, pChunk->cb);
if (pvi->bmiHeader.biCompression)
amt.subtype.Data1 = pvi->bmiHeader.biCompression;
}
else if (IsEqualIID(&amt.formattype, &FORMAT_WaveFormatEx))
{
amt.cbFormat = pChunk->cb;
if (amt.cbFormat < sizeof(WAVEFORMATEX))
amt.cbFormat = sizeof(WAVEFORMATEX);
amt.pbFormat = CoTaskMemAlloc(amt.cbFormat);
ZeroMemory(amt.pbFormat, amt.cbFormat);
CopyMemory(amt.pbFormat, pChunk + 1, pChunk->cb);
}
else
{
amt.cbFormat = pChunk->cb;
amt.pbFormat = CoTaskMemAlloc(amt.cbFormat);
CopyMemory(amt.pbFormat, pChunk + 1, amt.cbFormat);
}
break;
case ckidSTREAMNAME:
TRACE("processing stream name\n");
/* FIXME: this doesn't exactly match native version (we omit the "##)" prefix), but hey... */
MultiByteToWideChar(CP_ACP, 0, (LPCSTR)(pChunk + 1), pChunk->cb, piOutput.achName, sizeof(piOutput.achName) / sizeof(piOutput.achName[0]));
break;
case ckidSTREAMHANDLERDATA:
FIXME("process stream handler data\n");
break;
case ckidAVIPADDING:
TRACE("JUNK chunk ignored\n");
break;
case ckidAVISUPERINDEX:
{
const AVISUPERINDEX *pIndex = (const AVISUPERINDEX *)pChunk;
DWORD x;
UINT rest = pIndex->cb - sizeof(AVISUPERINDEX) + sizeof(RIFFCHUNK) + sizeof(pIndex->aIndex[0]) * ANYSIZE_ARRAY;
if (pIndex->cb < sizeof(AVISUPERINDEX) - sizeof(RIFFCHUNK))
{
FIXME("size %u\n", pIndex->cb);
break;
}
if (nstdindex++ > 0)
{
ERR("Stream %d got more than 1 superindex?\n", This->Parser.cStreams);
break;
}
TRACE("wLongsPerEntry: %hd\n", pIndex->wLongsPerEntry);
TRACE("bIndexSubType: %u\n", pIndex->bIndexSubType);
TRACE("bIndexType: %u\n", pIndex->bIndexType);
TRACE("nEntriesInUse: %u\n", pIndex->nEntriesInUse);
TRACE("dwChunkId: %.4s\n", (const char *)&pIndex->dwChunkId);
if (pIndex->dwReserved[0])
TRACE("dwReserved[0]: %u\n", pIndex->dwReserved[0]);
if (pIndex->dwReserved[1])
TRACE("dwReserved[1]: %u\n", pIndex->dwReserved[1]);
if (pIndex->dwReserved[2])
TRACE("dwReserved[2]: %u\n", pIndex->dwReserved[2]);
if (pIndex->bIndexType != AVI_INDEX_OF_INDEXES
|| pIndex->wLongsPerEntry != 4
|| rest < (pIndex->nEntriesInUse * sizeof(DWORD) * pIndex->wLongsPerEntry)
|| (pIndex->bIndexSubType != AVI_INDEX_SUB_2FIELD && pIndex->bIndexSubType != AVI_INDEX_SUB_DEFAULT))
{
FIXME("Invalid index chunk encountered\n");
break;
}
stream->entries = pIndex->nEntriesInUse;
stream->stdindex = CoTaskMemRealloc(stream->stdindex, sizeof(*stream->stdindex) * stream->entries);
for (x = 0; x < pIndex->nEntriesInUse; ++x)
{
TRACE("qwOffset: %x%08x\n", (DWORD)(pIndex->aIndex[x].qwOffset >> 32), (DWORD)pIndex->aIndex[x].qwOffset);
TRACE("dwSize: %u\n", pIndex->aIndex[x].dwSize);
TRACE("dwDuration: %u (unreliable)\n", pIndex->aIndex[x].dwDuration);
AVISplitter_ProcessIndex(This, &stream->stdindex[x], pIndex->aIndex[x].qwOffset, pIndex->aIndex[x].dwSize);
}
break;
}
default:
FIXME("unknown chunk type \"%.04s\" ignored\n", (LPCSTR)&pChunk->fcc);
}
}
if (IsEqualGUID(&amt.formattype, &FORMAT_WaveFormatEx))
{
amt.subtype = MEDIATYPE_Video;
amt.subtype.Data1 = ((WAVEFORMATEX *)amt.pbFormat)->wFormatTag;
}
dump_AM_MEDIA_TYPE(&amt);
TRACE("fSamplesPerSec = %f\n", (double)fSamplesPerSec);
TRACE("dwSampleSize = %x\n", dwSampleSize);
TRACE("dwLength = %x\n", dwLength);
stream->fSamplesPerSec = fSamplesPerSec;
stream->dwSampleSize = dwSampleSize;
stream->dwLength = dwLength; /* TODO: Use this for mediaseeking */
stream->packet_queued = CreateEventW(NULL, 0, 0, NULL);
hr = Parser_AddPin(&(This->Parser), &piOutput, props, &amt);
CoTaskMemFree(amt.pbFormat);
return hr;
}
static HRESULT AVISplitter_ProcessODML(AVISplitterImpl * This, const BYTE * pData, DWORD cb)
{
const RIFFCHUNK * pChunk;
for (pChunk = (const RIFFCHUNK *)pData;
((const BYTE *)pChunk >= pData) && ((const BYTE *)pChunk + sizeof(RIFFCHUNK) < pData + cb) && (pChunk->cb > 0);
pChunk = (const RIFFCHUNK *)((const BYTE*)pChunk + sizeof(RIFFCHUNK) + pChunk->cb)
)
{
switch (pChunk->fcc)
{
case ckidAVIEXTHEADER:
{
int x;
const AVIEXTHEADER * pExtHdr = (const AVIEXTHEADER *)pChunk;
TRACE("processing extension header\n");
if (pExtHdr->cb != sizeof(AVIEXTHEADER) - sizeof(RIFFCHUNK))
{
FIXME("Size: %u\n", pExtHdr->cb);
break;
}
TRACE("dwGrandFrames: %u\n", pExtHdr->dwGrandFrames);
for (x = 0; x < 61; ++x)
if (pExtHdr->dwFuture[x])
FIXME("dwFuture[%i] = %u (0x%08x)\n", x, pExtHdr->dwFuture[x], pExtHdr->dwFuture[x]);
This->ExtHeader = *pExtHdr;
break;
}
default:
FIXME("unknown chunk type \"%.04s\" ignored\n", (LPCSTR)&pChunk->fcc);
}
}
return S_OK;
}
static HRESULT AVISplitter_InitializeStreams(AVISplitterImpl *This)
{
unsigned int x;
if (This->oldindex)
{
DWORD nMax, n;
for (x = 0; x < This->Parser.cStreams; ++x)
{
This->streams[x].frames = 0;
This->streams[x].pos = ~0;
This->streams[x].index = 0;
}
nMax = This->oldindex->cb / sizeof(This->oldindex->aIndex[0]);
/* Ok, maybe this is more of an exercise to see if I interpret everything correctly or not, but that is useful for now. */
for (n = 0; n < nMax; ++n)
{
DWORD streamId = StreamFromFOURCC(This->oldindex->aIndex[n].dwChunkId);
if (streamId >= This->Parser.cStreams)
{
FIXME("Stream id %s ignored\n", debugstr_an((char*)&This->oldindex->aIndex[n].dwChunkId, 4));
continue;
}
if (This->streams[streamId].pos == ~0U)
This->streams[streamId].pos = n;
if (This->streams[streamId].streamheader.dwSampleSize)
This->streams[streamId].frames += This->oldindex->aIndex[n].dwSize / This->streams[streamId].streamheader.dwSampleSize;
else
++This->streams[streamId].frames;
}
for (x = 0; x < This->Parser.cStreams; ++x)
{
if ((DWORD)This->streams[x].frames != This->streams[x].streamheader.dwLength)
{
FIXME("stream %u: frames found: %u, frames meant to be found: %u\n", x, (DWORD)This->streams[x].frames, This->streams[x].streamheader.dwLength);
}
}
}
else if (!This->streams[0].entries)
{
for (x = 0; x < This->Parser.cStreams; ++x)
{
This->streams[x].frames = This->streams[x].streamheader.dwLength;
}
/* MS Avi splitter does seek through the whole file, we should! */
ERR("We should be manually seeking through the entire file to build an index, because the index is missing!!!\n");
return E_NOTIMPL;
}
/* Not much here yet */
for (x = 0; x < This->Parser.cStreams; ++x)
{
StreamData *stream = This->streams + x;
DWORD y;
DWORD64 frames = 0;
stream->seek = TRUE;
if (stream->stdindex)
{
stream->index = 0;
stream->pos = 0;
for (y = 0; y < stream->entries; ++y)
{
if (stream->streamheader.dwSampleSize)
{
DWORD z;
for (z = 0; z < stream->stdindex[y]->nEntriesInUse; ++z)
{
UINT len = stream->stdindex[y]->aIndex[z].dwSize & ~(1u << 31);
frames += len / stream->streamheader.dwSampleSize + !!(len % stream->streamheader.dwSampleSize);
}
}
else
frames += stream->stdindex[y]->nEntriesInUse;
}
}
else frames = stream->frames;
frames *= stream->streamheader.dwScale;
/* Keep accuracy as high as possible for duration */
This->Parser.sourceSeeking.llDuration = frames * 10000000;
This->Parser.sourceSeeking.llDuration /= stream->streamheader.dwRate;
This->Parser.sourceSeeking.llStop = This->Parser.sourceSeeking.llDuration;
This->Parser.sourceSeeking.llCurrent = 0;
frames /= stream->streamheader.dwRate;
TRACE("Duration: %d days, %d hours, %d minutes and %d.%03u seconds\n", (DWORD)(frames / 86400),
(DWORD)((frames % 86400) / 3600), (DWORD)((frames % 3600) / 60), (DWORD)(frames % 60),
(DWORD)(This->Parser.sourceSeeking.llDuration/10000) % 1000);
}
return S_OK;
}
static HRESULT AVISplitter_Disconnect(LPVOID iface);
/* FIXME: fix leaks on failure here */
static HRESULT AVISplitter_InputPin_PreConnect(IPin * iface, IPin * pConnectPin, ALLOCATOR_PROPERTIES *props)
{
PullPin *This = impl_PullPin_from_IPin(iface);
HRESULT hr;
RIFFLIST list;
LONGLONG pos = 0; /* in bytes */
BYTE * pBuffer;
RIFFCHUNK * pCurrentChunk;
LONGLONG total, avail;
ULONG x;
DWORD indexes;
AVISplitterImpl * pAviSplit = (AVISplitterImpl *)This->pin.pinInfo.pFilter;
hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(list), (BYTE *)&list);
pos += sizeof(list);
if (list.fcc != FOURCC_RIFF)
{
ERR("Input stream not a RIFF file\n");
return E_FAIL;
}
if (list.fccListType != formtypeAVI)
{
ERR("Input stream not an AVI RIFF file\n");
return E_FAIL;
}
hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(list), (BYTE *)&list);
if (list.fcc != FOURCC_LIST)
{
ERR("Expected LIST chunk, but got %.04s\n", (LPSTR)&list.fcc);
return E_FAIL;
}
if (list.fccListType != listtypeAVIHEADER)
{
ERR("Header list expected. Got: %.04s\n", (LPSTR)&list.fccListType);
return E_FAIL;
}
pBuffer = HeapAlloc(GetProcessHeap(), 0, list.cb - sizeof(RIFFLIST) + sizeof(RIFFCHUNK));
hr = IAsyncReader_SyncRead(This->pReader, pos + sizeof(list), list.cb - sizeof(RIFFLIST) + sizeof(RIFFCHUNK), pBuffer);
pAviSplit->AviHeader.cb = 0;
/* Stream list will set the buffer size here, so set a default and allow an override */
props->cbBuffer = 0x20000;
for (pCurrentChunk = (RIFFCHUNK *)pBuffer; (BYTE *)pCurrentChunk + sizeof(*pCurrentChunk) < pBuffer + list.cb; pCurrentChunk = (RIFFCHUNK *)(((BYTE *)pCurrentChunk) + sizeof(*pCurrentChunk) + pCurrentChunk->cb))
{
RIFFLIST * pList;
switch (pCurrentChunk->fcc)
{
case ckidMAINAVIHEADER:
/* AVIMAINHEADER includes the structure that is pCurrentChunk at the moment */
memcpy(&pAviSplit->AviHeader, pCurrentChunk, sizeof(pAviSplit->AviHeader));
break;
case FOURCC_LIST:
pList = (RIFFLIST *)pCurrentChunk;
switch (pList->fccListType)
{
case ckidSTREAMLIST:
hr = AVISplitter_ProcessStreamList(pAviSplit, (BYTE *)pCurrentChunk + sizeof(RIFFLIST), pCurrentChunk->cb + sizeof(RIFFCHUNK) - sizeof(RIFFLIST), props);
break;
case ckidODML:
hr = AVISplitter_ProcessODML(pAviSplit, (BYTE *)pCurrentChunk + sizeof(RIFFLIST), pCurrentChunk->cb + sizeof(RIFFCHUNK) - sizeof(RIFFLIST));
break;
}
break;
case ckidAVIPADDING:
/* ignore */
break;
default:
FIXME("unrecognised header list type: %.04s\n", (LPSTR)&pCurrentChunk->fcc);
}
}
HeapFree(GetProcessHeap(), 0, pBuffer);
if (pAviSplit->AviHeader.cb != sizeof(pAviSplit->AviHeader) - sizeof(RIFFCHUNK))
{
ERR("Avi Header wrong size!\n");
return E_FAIL;
}
/* Skip any chunks until we find the LIST chunk */
do
{
pos += sizeof(RIFFCHUNK) + list.cb;
hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(list), (BYTE *)&list);
}
while (hr == S_OK && (list.fcc != FOURCC_LIST ||
(list.fcc == FOURCC_LIST && list.fccListType != listtypeAVIMOVIE)));
if (hr != S_OK)
{
ERR("Failed to find LIST chunk from AVI file\n");
return E_FAIL;
}
IAsyncReader_Length(This->pReader, &total, &avail);
/* FIXME: AVIX files are extended beyond the FOURCC chunk "AVI ", and thus won't be played here,
* once I get one of the files I'll try to fix it */
This->rtStart = pAviSplit->CurrentChunkOffset = MEDIATIME_FROM_BYTES(pos + sizeof(RIFFLIST));
pos += list.cb + sizeof(RIFFCHUNK);
pAviSplit->EndOfFile = This->rtStop = MEDIATIME_FROM_BYTES(pos);
if (pos > total)
{
ERR("File smaller (%x%08x) then EndOfFile (%x%08x)\n", (DWORD)(total >> 32), (DWORD)total, (DWORD)(pAviSplit->EndOfFile >> 32), (DWORD)pAviSplit->EndOfFile);
return E_FAIL;
}
hr = IAsyncReader_SyncRead(This->pReader, BYTES_FROM_MEDIATIME(pAviSplit->CurrentChunkOffset), sizeof(pAviSplit->CurrentChunk), (BYTE *)&pAviSplit->CurrentChunk);
props->cbAlign = 1;
props->cbPrefix = 0;
/* Comrades, prevent shortage of buffers, or you will feel the consequences! DA! */
props->cBuffers = 2 * pAviSplit->Parser.cStreams;
/* Now peek into the idx1 index, if available */
if (hr == S_OK && (total - pos) > sizeof(RIFFCHUNK))
{
memset(&list, 0, sizeof(list));
hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(list), (BYTE *)&list);
if (list.fcc == ckidAVIOLDINDEX)
{
pAviSplit->oldindex = CoTaskMemRealloc(pAviSplit->oldindex, list.cb + sizeof(RIFFCHUNK));
if (pAviSplit->oldindex)
{
hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(RIFFCHUNK) + list.cb, (BYTE *)pAviSplit->oldindex);
if (hr == S_OK)
{
hr = AVISplitter_ProcessOldIndex(pAviSplit);
}
else
{
CoTaskMemFree(pAviSplit->oldindex);
pAviSplit->oldindex = NULL;
hr = S_OK;
}
}
}
}
indexes = 0;
for (x = 0; x < pAviSplit->Parser.cStreams; ++x)
if (pAviSplit->streams[x].entries)
++indexes;
if (indexes)
{
CoTaskMemFree(pAviSplit->oldindex);
pAviSplit->oldindex = NULL;
if (indexes < pAviSplit->Parser.cStreams)
{
/* This error could possible be survived by switching to old type index,
* but I would rather find out why it doesn't find everything here
*/
ERR("%d indexes expected, but only have %d\n", indexes, pAviSplit->Parser.cStreams);
indexes = 0;
}
}
else if (pAviSplit->oldindex)
indexes = pAviSplit->Parser.cStreams;
if (!indexes && pAviSplit->AviHeader.dwFlags & AVIF_MUSTUSEINDEX)
{
FIXME("No usable index was found!\n");
hr = E_FAIL;
}
/* Now, set up the streams */
if (hr == S_OK)
hr = AVISplitter_InitializeStreams(pAviSplit);
if (hr != S_OK)
{
AVISplitter_Disconnect(pAviSplit);
return E_FAIL;
}
TRACE("AVI File ok\n");
return hr;
}
static HRESULT AVISplitter_Flush(LPVOID iface)
{
AVISplitterImpl *This = iface;
DWORD x;
ULONG ref;
TRACE("(%p)->()\n", This);
for (x = 0; x < This->Parser.cStreams; ++x)
{
StreamData *stream = This->streams + x;
if (stream->sample)
{
ref = IMediaSample_Release(stream->sample);
assert(ref == 0);
}
stream->sample = NULL;
ResetEvent(stream->packet_queued);
assert(!stream->thread);
}
return S_OK;
}
static HRESULT AVISplitter_Disconnect(LPVOID iface)
{
AVISplitterImpl *This = iface;
ULONG x;
/* TODO: Remove other memory that's allocated during connect */
CoTaskMemFree(This->oldindex);
This->oldindex = NULL;
for (x = 0; x < This->Parser.cStreams; ++x)
{
DWORD i;
StreamData *stream = &This->streams[x];
for (i = 0; i < stream->entries; ++i)
CoTaskMemFree(stream->stdindex[i]);
CoTaskMemFree(stream->stdindex);
CloseHandle(stream->packet_queued);
}
CoTaskMemFree(This->streams);
This->streams = NULL;
return S_OK;
}
static ULONG WINAPI AVISplitter_Release(IBaseFilter *iface)
{
AVISplitterImpl *This = (AVISplitterImpl *)iface;
ULONG ref;
ref = InterlockedDecrement(&This->Parser.filter.refCount);
TRACE("(%p)->() Release from %d\n", This, ref + 1);
if (!ref)
{
AVISplitter_Flush(This);
Parser_Destroy(&This->Parser);
}
return ref;
}
static HRESULT WINAPI AVISplitter_seek(IMediaSeeking *iface)
{
AVISplitterImpl *This = impl_from_IMediaSeeking(iface);
PullPin *pPin = This->Parser.pInputPin;
LONGLONG newpos, endpos;
DWORD x;
newpos = This->Parser.sourceSeeking.llCurrent;
endpos = This->Parser.sourceSeeking.llDuration;
if (newpos > endpos)
{
WARN("Requesting position %x%08x beyond end of stream %x%08x\n", (DWORD)(newpos>>32), (DWORD)newpos, (DWORD)(endpos>>32), (DWORD)endpos);
return E_INVALIDARG;
}
FIXME("Moving position to %u.%03u s!\n", (DWORD)(newpos / 10000000), (DWORD)((newpos / 10000)%1000));
EnterCriticalSection(&pPin->thread_lock);
/* Send a flush to all output pins */
IPin_BeginFlush(&pPin->pin.IPin_iface);
/* Make sure this is done while stopped, BeginFlush takes care of this */
EnterCriticalSection(&This->Parser.filter.csFilter);
for (x = 0; x < This->Parser.cStreams; ++x)
{
Parser_OutputPin *pin = unsafe_impl_Parser_OutputPin_from_IPin(This->Parser.ppPins[1+x]);
StreamData *stream = This->streams + x;
LONGLONG wanted_frames;
DWORD last_keyframe = 0, last_keyframeidx = 0, preroll = 0;
wanted_frames = newpos;
wanted_frames *= stream->streamheader.dwRate;
wanted_frames /= 10000000;
wanted_frames /= stream->streamheader.dwScale;
pin->dwSamplesProcessed = 0;
stream->index = 0;
stream->pos = 0;
stream->seek = TRUE;
if (stream->stdindex)
{
DWORD y, z = 0;
for (y = 0; y < stream->entries; ++y)
{
for (z = 0; z < stream->stdindex[y]->nEntriesInUse; ++z)
{
if (stream->streamheader.dwSampleSize)
{
ULONG len = stream->stdindex[y]->aIndex[z].dwSize & ~(1u << 31);
ULONG size = stream->streamheader.dwSampleSize;
pin->dwSamplesProcessed += len / size;
if (len % size)
++pin->dwSamplesProcessed;
}
else ++pin->dwSamplesProcessed;
if (!(stream->stdindex[y]->aIndex[z].dwSize >> 31))
{
last_keyframe = z;
last_keyframeidx = y;
preroll = 0;
}
else
++preroll;
if (pin->dwSamplesProcessed >= wanted_frames)
break;
}
if (pin->dwSamplesProcessed >= wanted_frames)
break;
}
stream->index = last_keyframeidx;
stream->pos = last_keyframe;
}
else
{
DWORD nMax, n;
nMax = This->oldindex->cb / sizeof(This->oldindex->aIndex[0]);
for (n = 0; n < nMax; ++n)
{
DWORD streamId = StreamFromFOURCC(This->oldindex->aIndex[n].dwChunkId);
if (streamId != x)
continue;
if (stream->streamheader.dwSampleSize)
{
ULONG len = This->oldindex->aIndex[n].dwSize;
ULONG size = stream->streamheader.dwSampleSize;
pin->dwSamplesProcessed += len / size;
if (len % size)
++pin->dwSamplesProcessed;
}
else ++pin->dwSamplesProcessed;
if (This->oldindex->aIndex[n].dwFlags & AVIIF_KEYFRAME)
{
last_keyframe = n;
preroll = 0;
}
else
++preroll;
if (pin->dwSamplesProcessed >= wanted_frames)
break;
}
assert(n < nMax);
stream->pos = last_keyframe;
stream->index = 0;
}
stream->preroll = preroll;
stream->seek = TRUE;
}
LeaveCriticalSection(&This->Parser.filter.csFilter);
TRACE("Done flushing\n");
IPin_EndFlush(&pPin->pin.IPin_iface);
LeaveCriticalSection(&pPin->thread_lock);
return S_OK;
}
static const IBaseFilterVtbl AVISplitterImpl_Vtbl =
{
Parser_QueryInterface,
Parser_AddRef,
AVISplitter_Release,
Parser_GetClassID,
Parser_Stop,
Parser_Pause,
Parser_Run,
Parser_GetState,
Parser_SetSyncSource,
Parser_GetSyncSource,
Parser_EnumPins,
Parser_FindPin,
Parser_QueryFilterInfo,
Parser_JoinFilterGraph,
Parser_QueryVendorInfo
};
HRESULT AVISplitter_create(IUnknown * pUnkOuter, LPVOID * ppv)
{
HRESULT hr;
AVISplitterImpl * This;
TRACE("(%p, %p)\n", pUnkOuter, ppv);
*ppv = NULL;
if (pUnkOuter)
return CLASS_E_NOAGGREGATION;
/* Note: This memory is managed by the transform filter once created */
This = CoTaskMemAlloc(sizeof(AVISplitterImpl));
This->streams = NULL;
This->oldindex = NULL;
hr = Parser_Create(&(This->Parser), &AVISplitterImpl_Vtbl, &CLSID_AviSplitter, AVISplitter_Sample, AVISplitter_QueryAccept, AVISplitter_InputPin_PreConnect, AVISplitter_Flush, AVISplitter_Disconnect, AVISplitter_first_request, AVISplitter_done_process, NULL, AVISplitter_seek, NULL);
if (FAILED(hr))
return hr;
*ppv = &This->Parser.filter.IBaseFilter_iface;
return hr;
}
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