Sweden-Number/dlls/strmbase/outputqueue.c

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/*
* Generic Implementation of COutputQueue
*
* Copyright 2011 Aric Stewart, CodeWeavers
*
* 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 "strmbase_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
enum {SAMPLE_PACKET, EOS_PACKET};
typedef struct tagQueuedEvent {
int type;
struct list entry;
IMediaSample *pSample;
} QueuedEvent;
static DWORD WINAPI OutputQueue_InitialThreadProc(LPVOID data)
{
OutputQueue *This = (OutputQueue *)data;
return This->pFuncsTable->pfnThreadProc(This);
}
static void OutputQueue_FreeSamples(OutputQueue *pOutputQueue)
{
struct list *cursor, *cursor2;
LIST_FOR_EACH_SAFE(cursor, cursor2, &pOutputQueue->SampleList)
{
QueuedEvent *qev = LIST_ENTRY(cursor, QueuedEvent, entry);
list_remove(cursor);
HeapFree(GetProcessHeap(),0,qev);
}
}
HRESULT WINAPI OutputQueue_Construct(struct strmbase_source *pInputPin, BOOL bAuto,
BOOL bQueue, LONG lBatchSize, BOOL bBatchExact, DWORD dwPriority,
const OutputQueueFuncTable *pFuncsTable, OutputQueue **ppOutputQueue)
{
BOOL threaded = FALSE;
DWORD tid;
OutputQueue *This;
if (!pInputPin || !pFuncsTable || !ppOutputQueue)
return E_INVALIDARG;
*ppOutputQueue = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(OutputQueue));
if (!*ppOutputQueue)
return E_OUTOFMEMORY;
This = *ppOutputQueue;
This->pFuncsTable = pFuncsTable;
This->lBatchSize = lBatchSize;
This->bBatchExact = bBatchExact;
InitializeCriticalSection(&This->csQueue);
This->csQueue.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": OutputQueue.csQueue");
list_init(&This->SampleList);
This->pInputPin = pInputPin;
IPin_AddRef(&pInputPin->pin.IPin_iface);
EnterCriticalSection(&This->csQueue);
if (bAuto && pInputPin->pMemInputPin)
threaded = IMemInputPin_ReceiveCanBlock(pInputPin->pMemInputPin) == S_OK;
else
threaded = bQueue;
if (threaded)
{
This->hThread = CreateThread(NULL, 0, OutputQueue_InitialThreadProc, This, 0, &tid);
if (This->hThread)
{
SetThreadPriority(This->hThread, dwPriority);
This->hProcessQueue = CreateEventW(NULL, 0, 0, NULL);
}
}
LeaveCriticalSection(&This->csQueue);
return S_OK;
}
HRESULT WINAPI OutputQueue_Destroy(OutputQueue *pOutputQueue)
{
EnterCriticalSection(&pOutputQueue->csQueue);
OutputQueue_FreeSamples(pOutputQueue);
pOutputQueue->bTerminate = TRUE;
SetEvent(pOutputQueue->hProcessQueue);
LeaveCriticalSection(&pOutputQueue->csQueue);
pOutputQueue->csQueue.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&pOutputQueue->csQueue);
CloseHandle(pOutputQueue->hProcessQueue);
IPin_Release(&pOutputQueue->pInputPin->pin.IPin_iface);
HeapFree(GetProcessHeap(),0,pOutputQueue);
return S_OK;
}
HRESULT WINAPI OutputQueue_ReceiveMultiple(OutputQueue *pOutputQueue, IMediaSample **ppSamples, LONG nSamples, LONG *nSamplesProcessed)
{
HRESULT hr = S_OK;
int i;
if (!pOutputQueue->pInputPin->pin.peer || !pOutputQueue->pInputPin->pMemInputPin)
return VFW_E_NOT_CONNECTED;
if (!pOutputQueue->hThread)
{
IMemInputPin_AddRef(pOutputQueue->pInputPin->pMemInputPin);
hr = IMemInputPin_ReceiveMultiple(pOutputQueue->pInputPin->pMemInputPin,ppSamples, nSamples, nSamplesProcessed);
IMemInputPin_Release(pOutputQueue->pInputPin->pMemInputPin);
}
else
{
EnterCriticalSection(&pOutputQueue->csQueue);
*nSamplesProcessed = 0;
for (i = 0; i < nSamples; i++)
{
QueuedEvent *qev = HeapAlloc(GetProcessHeap(),0,sizeof(QueuedEvent));
if (!qev)
{
ERR("Out of Memory\n");
hr = E_OUTOFMEMORY;
break;
}
qev->type = SAMPLE_PACKET;
qev->pSample = ppSamples[i];
IMediaSample_AddRef(ppSamples[i]);
list_add_tail(&pOutputQueue->SampleList, &qev->entry);
(*nSamplesProcessed)++;
}
if (!pOutputQueue->bBatchExact || list_count(&pOutputQueue->SampleList) >= pOutputQueue->lBatchSize)
SetEvent(pOutputQueue->hProcessQueue);
LeaveCriticalSection(&pOutputQueue->csQueue);
}
return hr;
}
HRESULT WINAPI OutputQueue_Receive(OutputQueue *pOutputQueue, IMediaSample *pSample)
{
LONG processed;
return OutputQueue_ReceiveMultiple(pOutputQueue,&pSample,1,&processed);
}
VOID WINAPI OutputQueue_SendAnyway(OutputQueue *pOutputQueue)
{
if (pOutputQueue->hThread)
{
EnterCriticalSection(&pOutputQueue->csQueue);
if (!list_empty(&pOutputQueue->SampleList))
{
pOutputQueue->bSendAnyway = TRUE;
SetEvent(pOutputQueue->hProcessQueue);
}
LeaveCriticalSection(&pOutputQueue->csQueue);
}
}
VOID WINAPI OutputQueue_EOS(OutputQueue *pOutputQueue)
{
EnterCriticalSection(&pOutputQueue->csQueue);
if (pOutputQueue->hThread)
{
QueuedEvent *qev = HeapAlloc(GetProcessHeap(),0,sizeof(QueuedEvent));
if (!qev)
{
ERR("Out of Memory\n");
LeaveCriticalSection(&pOutputQueue->csQueue);
return;
}
qev->type = EOS_PACKET;
qev->pSample = NULL;
list_add_tail(&pOutputQueue->SampleList, &qev->entry);
}
else
{
IPin* ppin = NULL;
IPin_ConnectedTo(&pOutputQueue->pInputPin->pin.IPin_iface, &ppin);
if (ppin)
{
IPin_EndOfStream(ppin);
IPin_Release(ppin);
}
}
LeaveCriticalSection(&pOutputQueue->csQueue);
/* Covers sending the Event to the worker Thread */
OutputQueue_SendAnyway(pOutputQueue);
}
DWORD WINAPI OutputQueueImpl_ThreadProc(OutputQueue *pOutputQueue)
{
do
{
EnterCriticalSection(&pOutputQueue->csQueue);
if (!list_empty(&pOutputQueue->SampleList) &&
(!pOutputQueue->bBatchExact ||
list_count(&pOutputQueue->SampleList) >= pOutputQueue->lBatchSize ||
pOutputQueue->bSendAnyway
)
)
{
while (!list_empty(&pOutputQueue->SampleList))
{
IMediaSample **ppSamples;
LONG nSamples;
LONG nSamplesProcessed;
struct list *cursor, *cursor2;
int i = 0;
/* First Pass Process Samples */
i = list_count(&pOutputQueue->SampleList);
ppSamples = HeapAlloc(GetProcessHeap(),0,sizeof(IMediaSample*) * i);
nSamples = 0;
LIST_FOR_EACH_SAFE(cursor, cursor2, &pOutputQueue->SampleList)
{
QueuedEvent *qev = LIST_ENTRY(cursor, QueuedEvent, entry);
if (qev->type == SAMPLE_PACKET)
ppSamples[nSamples++] = qev->pSample;
else
break;
list_remove(cursor);
HeapFree(GetProcessHeap(),0,qev);
}
if (pOutputQueue->pInputPin->pin.peer && pOutputQueue->pInputPin->pMemInputPin)
{
IMemInputPin_AddRef(pOutputQueue->pInputPin->pMemInputPin);
LeaveCriticalSection(&pOutputQueue->csQueue);
IMemInputPin_ReceiveMultiple(pOutputQueue->pInputPin->pMemInputPin, ppSamples, nSamples, &nSamplesProcessed);
EnterCriticalSection(&pOutputQueue->csQueue);
IMemInputPin_Release(pOutputQueue->pInputPin->pMemInputPin);
}
for (i = 0; i < nSamples; i++)
IMediaSample_Release(ppSamples[i]);
HeapFree(GetProcessHeap(),0,ppSamples);
/* Process Non-Samples */
LIST_FOR_EACH_SAFE(cursor, cursor2, &pOutputQueue->SampleList)
{
QueuedEvent *qev = LIST_ENTRY(cursor, QueuedEvent, entry);
if (qev->type == EOS_PACKET)
{
IPin* ppin = NULL;
IPin_ConnectedTo(&pOutputQueue->pInputPin->pin.IPin_iface, &ppin);
if (ppin)
{
IPin_EndOfStream(ppin);
IPin_Release(ppin);
}
}
else if (qev->type == SAMPLE_PACKET)
break;
else
FIXME("Unhandled Event type %i\n",qev->type);
list_remove(cursor);
HeapFree(GetProcessHeap(),0,qev);
}
}
pOutputQueue->bSendAnyway = FALSE;
}
LeaveCriticalSection(&pOutputQueue->csQueue);
WaitForSingleObject(pOutputQueue->hProcessQueue, INFINITE);
}
while (!pOutputQueue->bTerminate);
return S_OK;
}