Sweden-Number/dlls/quartz/memalloc.c

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/*
* Implementation of CLSID_MemoryAllocator.
*
* hidenori@a2.ctktv.ne.jp
*/
#include "config.h"
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
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#include "winuser.h"
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#include "winerror.h"
#include "strmif.h"
#include "uuids.h"
#include "vfwmsgs.h"
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#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(quartz);
#include "quartz_private.h"
#include "memalloc.h"
/***************************************************************************
*
* new/delete for CLSID_MemoryAllocator.
*
*/
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/* can I use offsetof safely? - FIXME? */
static QUARTZ_IFEntry IFEntries[] =
{
{ &IID_IMemAllocator, offsetof(CMemoryAllocator,memalloc)-offsetof(CMemoryAllocator,unk) },
};
static void QUARTZ_DestroyMemoryAllocator(IUnknown* punk)
{
CMemoryAllocator_THIS(punk,unk);
CMemoryAllocator_UninitIMemAllocator( This );
}
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HRESULT QUARTZ_CreateMemoryAllocator(IUnknown* punkOuter,void** ppobj)
{
CMemoryAllocator* pma;
HRESULT hr;
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TRACE("(%p,%p)\n",punkOuter,ppobj);
pma = (CMemoryAllocator*)QUARTZ_AllocObj( sizeof(CMemoryAllocator) );
if ( pma == NULL )
return E_OUTOFMEMORY;
QUARTZ_IUnkInit( &pma->unk, punkOuter );
hr = CMemoryAllocator_InitIMemAllocator( pma );
if ( FAILED(hr) )
{
QUARTZ_FreeObj( pma );
return hr;
}
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pma->unk.pEntries = IFEntries;
pma->unk.dwEntries = sizeof(IFEntries)/sizeof(IFEntries[0]);
pma->unk.pOnFinalRelease = QUARTZ_DestroyMemoryAllocator;
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*ppobj = (void*)(&pma->unk);
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return S_OK;
}
/***************************************************************************
*
* CMemoryAllocator::IMemAllocator
*
*/
static HRESULT
IMemAllocator_LockUnusedBuffer(CMemoryAllocator* This,IMediaSample** ppSample)
{
HRESULT hr = E_FAIL;
LONG i;
TRACE("(%p) try to enter critical section\n",This);
EnterCriticalSection( &This->csMem );
TRACE("(%p) enter critical section\n",This);
if ( This->pData == NULL || This->ppSamples == NULL ||
This->prop.cBuffers <= 0 )
{
hr = VFW_E_NOT_COMMITTED;
goto end;
}
for ( i = 0; i < This->prop.cBuffers; i++ )
{
if ( This->ppSamples[i] == NULL )
{
hr = VFW_E_NOT_COMMITTED;
goto end;
}
if ( This->ppSamples[i]->ref == 0 )
{
*ppSample = (IMediaSample*)(This->ppSamples[i]);
IMediaSample_AddRef( *ppSample );
hr = NOERROR;
goto end;
}
}
hr = VFW_E_TIMEOUT;
end:
LeaveCriticalSection( &This->csMem );
TRACE("(%p) leave critical section\n",This);
return hr;
}
/* TRUE = all samples are released */
static BOOL
IMemAllocator_ReleaseUnusedBuffer(CMemoryAllocator* This)
{
LONG i;
BOOL bRet = TRUE;
TRACE("(%p) try to enter critical section\n",This);
EnterCriticalSection( &This->csMem );
TRACE("(%p) enter critical section\n",This);
if ( This->pData == NULL || This->ppSamples == NULL ||
This->prop.cBuffers <= 0 )
goto end;
for ( i = 0; i < This->prop.cBuffers; i++ )
{
if ( This->ppSamples[i]->ref == 0 )
{
QUARTZ_DestroyMemMediaSample( This->ppSamples[i] );
This->ppSamples[i] = NULL;
}
else
{
bRet = FALSE;
}
}
if ( bRet )
{
QUARTZ_FreeMem(This->ppSamples);
This->ppSamples = NULL;
QUARTZ_FreeMem(This->pData);
This->pData = NULL;
}
end:
LeaveCriticalSection( &This->csMem );
TRACE("(%p) leave critical section\n",This);
return bRet;
}
static HRESULT WINAPI
IMemAllocator_fnQueryInterface(IMemAllocator* iface,REFIID riid,void** ppobj)
{
CMemoryAllocator_THIS(iface,memalloc);
TRACE("(%p)->()\n",This);
return IUnknown_QueryInterface(This->unk.punkControl,riid,ppobj);
}
static ULONG WINAPI
IMemAllocator_fnAddRef(IMemAllocator* iface)
{
CMemoryAllocator_THIS(iface,memalloc);
TRACE("(%p)->()\n",This);
return IUnknown_AddRef(This->unk.punkControl);
}
static ULONG WINAPI
IMemAllocator_fnRelease(IMemAllocator* iface)
{
CMemoryAllocator_THIS(iface,memalloc);
TRACE("(%p)->()\n",This);
return IUnknown_Release(This->unk.punkControl);
}
static HRESULT WINAPI
IMemAllocator_fnSetProperties(IMemAllocator* iface,ALLOCATOR_PROPERTIES* pPropReq,ALLOCATOR_PROPERTIES* pPropActual)
{
CMemoryAllocator_THIS(iface,memalloc);
long padding;
HRESULT hr;
TRACE( "(%p)->(%p,%p)\n", This, pPropReq, pPropActual );
if ( pPropReq == NULL || pPropActual == NULL )
return E_POINTER;
if ( pPropReq->cBuffers < 0 ||
pPropReq->cbBuffer < 0 ||
pPropReq->cbAlign < 0 ||
pPropReq->cbPrefix < 0 )
{
TRACE("pPropReq is invalid\n");
return E_INVALIDARG;
}
if ( pPropReq->cbAlign == 0 ||
( pPropReq->cbAlign & (pPropReq->cbAlign-1) ) != 0 )
{
WARN("cbAlign is invalid - %ld\n",pPropReq->cbAlign);
return VFW_E_BADALIGN;
}
hr = NOERROR;
EnterCriticalSection( &This->csMem );
if ( This->pData != NULL || This->ppSamples != NULL )
{
/* if commited, properties must not be changed. */
TRACE("already commited\n");
hr = E_UNEXPECTED;
goto end;
}
This->prop.cBuffers = pPropReq->cBuffers;
This->prop.cbBuffer = pPropReq->cbBuffer;
This->prop.cbAlign = pPropReq->cbAlign;
This->prop.cbPrefix = pPropReq->cbPrefix;
if ( This->prop.cbAlign == 0 )
This->prop.cbAlign = 1;
padding = This->prop.cbAlign -
( (This->prop.cbBuffer+This->prop.cbPrefix) % This->prop.cbAlign );
This->prop.cbBuffer += padding;
memcpy( pPropActual, &This->prop, sizeof(ALLOCATOR_PROPERTIES) );
end:
LeaveCriticalSection( &This->csMem );
TRACE("returned successfully.\n");
return hr;
}
static HRESULT WINAPI
IMemAllocator_fnGetProperties(IMemAllocator* iface,ALLOCATOR_PROPERTIES* pProp)
{
CMemoryAllocator_THIS(iface,memalloc);
TRACE( "(%p)->(%p)\n", This, pProp );
if ( pProp == NULL )
return E_POINTER;
EnterCriticalSection( &This->csMem );
memcpy( pProp, &This->prop, sizeof(ALLOCATOR_PROPERTIES) );
LeaveCriticalSection( &This->csMem );
return NOERROR;
}
static HRESULT WINAPI
IMemAllocator_fnCommit(IMemAllocator* iface)
{
CMemoryAllocator_THIS(iface,memalloc);
HRESULT hr;
LONG lBufSize;
LONG i;
BYTE* pCur;
TRACE( "(%p)->()\n", This );
EnterCriticalSection( &This->csMem );
hr = NOERROR;
/* FIXME - handle in Decommitting */
if ( This->pData != NULL || This->ppSamples != NULL ||
This->prop.cBuffers <= 0 )
goto end;
lBufSize = This->prop.cBuffers *
(This->prop.cbBuffer + This->prop.cbPrefix) +
This->prop.cbAlign;
if ( lBufSize <= 0 )
lBufSize = 1;
This->pData = (BYTE*)QUARTZ_AllocMem( lBufSize );
if ( This->pData == NULL )
{
hr = E_OUTOFMEMORY;
goto end;
}
This->ppSamples = (CMemMediaSample**)QUARTZ_AllocMem(
sizeof(CMemMediaSample*) * This->prop.cBuffers );
if ( This->ppSamples == NULL )
{
hr = E_OUTOFMEMORY;
goto end;
}
for ( i = 0; i < This->prop.cBuffers; i++ )
This->ppSamples[i] = NULL;
pCur = This->pData + This->prop.cbAlign - ((This->pData-(BYTE*)NULL) & (This->prop.cbAlign-1));
for ( i = 0; i < This->prop.cBuffers; i++ )
{
hr = QUARTZ_CreateMemMediaSample(
pCur, (This->prop.cbBuffer + This->prop.cbPrefix),
iface, &This->ppSamples[i] );
if ( FAILED(hr) )
goto end;
pCur += (This->prop.cbBuffer + This->prop.cbPrefix);
}
hr = NOERROR;
end:
if ( FAILED(hr) )
IMemAllocator_Decommit(iface);
LeaveCriticalSection( &This->csMem );
return hr;
}
static HRESULT WINAPI
IMemAllocator_fnDecommit(IMemAllocator* iface)
{
CMemoryAllocator_THIS(iface,memalloc);
TRACE( "(%p)->()\n", This );
while ( 1 )
{
ResetEvent( This->hEventSample );
/* to avoid deadlock, don't hold critical section while blocking */
if ( IMemAllocator_ReleaseUnusedBuffer(This) )
break;
WaitForSingleObject( This->hEventSample, INFINITE );
}
return NOERROR;
}
static HRESULT WINAPI
IMemAllocator_fnGetBuffer(IMemAllocator* iface,IMediaSample** ppSample,REFERENCE_TIME* prtStart,REFERENCE_TIME* prtEnd,DWORD dwFlags)
{
CMemoryAllocator_THIS(iface,memalloc);
HRESULT hr;
TRACE( "(%p)->(%p,%p,%p,%lu)\n", This, ppSample, prtStart, prtEnd, dwFlags );
if ( ppSample == NULL )
return E_POINTER;
while ( 1 )
{
ResetEvent( This->hEventSample );
/* to avoid deadlock, don't hold critical section while blocking */
hr = IMemAllocator_LockUnusedBuffer(This,ppSample);
if ( ( hr != VFW_E_TIMEOUT ) || ( dwFlags & AM_GBF_NOWAIT ) )
goto end;
WaitForSingleObject( This->hEventSample, INFINITE );
}
end:
return hr;
}
static HRESULT WINAPI
IMemAllocator_fnReleaseBuffer(IMemAllocator* iface,IMediaSample* pSample)
{
CMemoryAllocator_THIS(iface,memalloc);
TRACE( "(%p)->(%p)\n", This, pSample );
SetEvent( This->hEventSample );
return NOERROR;
}
static ICOM_VTABLE(IMemAllocator) imemalloc =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
/* IUnknown fields */
IMemAllocator_fnQueryInterface,
IMemAllocator_fnAddRef,
IMemAllocator_fnRelease,
/* IMemAllocator fields */
IMemAllocator_fnSetProperties,
IMemAllocator_fnGetProperties,
IMemAllocator_fnCommit,
IMemAllocator_fnDecommit,
IMemAllocator_fnGetBuffer,
IMemAllocator_fnReleaseBuffer,
};
HRESULT CMemoryAllocator_InitIMemAllocator( CMemoryAllocator* pma )
{
TRACE("(%p)\n",pma);
ICOM_VTBL(&pma->memalloc) = &imemalloc;
ZeroMemory( &pma->prop, sizeof(pma->prop) );
pma->hEventSample = (HANDLE)NULL;
pma->pData = NULL;
pma->ppSamples = NULL;
pma->hEventSample = CreateEventA( NULL, TRUE, FALSE, NULL );
if ( pma->hEventSample == (HANDLE)NULL )
return E_OUTOFMEMORY;
InitializeCriticalSection( &pma->csMem );
return NOERROR;
}
void CMemoryAllocator_UninitIMemAllocator( CMemoryAllocator* pma )
{
TRACE("(%p)\n",pma);
IMemAllocator_Decommit( (IMemAllocator*)(&pma->memalloc) );
DeleteCriticalSection( &pma->csMem );
if ( pma->hEventSample != (HANDLE)NULL )
CloseHandle( pma->hEventSample );
}