465 lines
10 KiB
C
465 lines
10 KiB
C
/*
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* Implementation of CLSID_MemoryAllocator.
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*
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* Copyright (C) Hidenori TAKESHIMA <hidenori@a2.ctktv.ne.jp>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "winerror.h"
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#include "strmif.h"
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#include "uuids.h"
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#include "vfwmsgs.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(quartz);
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#include "quartz_private.h"
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#include "memalloc.h"
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/***************************************************************************
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*
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* new/delete for CLSID_MemoryAllocator.
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*
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*/
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/* can I use offsetof safely? - FIXME? */
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static QUARTZ_IFEntry IFEntries[] =
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{
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{ &IID_IMemAllocator, offsetof(CMemoryAllocator,memalloc)-offsetof(CMemoryAllocator,unk) },
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};
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static void QUARTZ_DestroyMemoryAllocator(IUnknown* punk)
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{
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CMemoryAllocator_THIS(punk,unk);
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CMemoryAllocator_UninitIMemAllocator( This );
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}
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HRESULT QUARTZ_CreateMemoryAllocator(IUnknown* punkOuter,void** ppobj)
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{
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CMemoryAllocator* pma;
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HRESULT hr;
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TRACE("(%p,%p)\n",punkOuter,ppobj);
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pma = (CMemoryAllocator*)QUARTZ_AllocObj( sizeof(CMemoryAllocator) );
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if ( pma == NULL )
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return E_OUTOFMEMORY;
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QUARTZ_IUnkInit( &pma->unk, punkOuter );
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hr = CMemoryAllocator_InitIMemAllocator( pma );
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if ( FAILED(hr) )
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{
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QUARTZ_FreeObj( pma );
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return hr;
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}
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pma->unk.pEntries = IFEntries;
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pma->unk.dwEntries = sizeof(IFEntries)/sizeof(IFEntries[0]);
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pma->unk.pOnFinalRelease = QUARTZ_DestroyMemoryAllocator;
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*ppobj = (void*)(&pma->unk);
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return S_OK;
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}
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/***************************************************************************
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*
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* CMemoryAllocator::IMemAllocator
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*
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*/
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static HRESULT
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IMemAllocator_LockUnusedBuffer(CMemoryAllocator* This,IMediaSample** ppSample)
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{
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HRESULT hr = E_FAIL;
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LONG i;
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TRACE("(%p) try to enter critical section\n",This);
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EnterCriticalSection( &This->csMem );
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TRACE("(%p) enter critical section\n",This);
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if ( This->pData == NULL || This->ppSamples == NULL ||
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This->prop.cBuffers <= 0 )
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{
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hr = VFW_E_NOT_COMMITTED;
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goto end;
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}
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for ( i = 0; i < This->prop.cBuffers; i++ )
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{
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if ( This->ppSamples[i] == NULL )
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{
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hr = VFW_E_NOT_COMMITTED;
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goto end;
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}
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if ( This->ppSamples[i]->ref == 0 )
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{
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*ppSample = (IMediaSample*)(This->ppSamples[i]);
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IMediaSample_AddRef( *ppSample );
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hr = NOERROR;
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goto end;
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}
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}
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hr = VFW_E_TIMEOUT;
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end:
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LeaveCriticalSection( &This->csMem );
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TRACE("(%p) leave critical section\n",This);
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return hr;
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}
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/* TRUE = all samples are released */
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static BOOL
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IMemAllocator_ReleaseUnusedBuffer(CMemoryAllocator* This)
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{
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LONG i;
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BOOL bRet = TRUE;
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TRACE("(%p) try to enter critical section\n",This);
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EnterCriticalSection( &This->csMem );
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TRACE("(%p) enter critical section\n",This);
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if ( This->pData == NULL || This->ppSamples == NULL ||
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This->prop.cBuffers <= 0 )
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goto end;
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for ( i = 0; i < This->prop.cBuffers; i++ )
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{
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if ( This->ppSamples[i]->ref == 0 )
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{
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QUARTZ_DestroyMemMediaSample( This->ppSamples[i] );
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This->ppSamples[i] = NULL;
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}
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else
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{
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bRet = FALSE;
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}
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}
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if ( bRet )
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{
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QUARTZ_FreeMem(This->ppSamples);
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This->ppSamples = NULL;
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QUARTZ_FreeMem(This->pData);
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This->pData = NULL;
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}
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end:
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LeaveCriticalSection( &This->csMem );
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TRACE("(%p) leave critical section\n",This);
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return bRet;
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}
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static HRESULT WINAPI
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IMemAllocator_fnQueryInterface(IMemAllocator* iface,REFIID riid,void** ppobj)
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{
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CMemoryAllocator_THIS(iface,memalloc);
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TRACE("(%p)->()\n",This);
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return IUnknown_QueryInterface(This->unk.punkControl,riid,ppobj);
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}
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static ULONG WINAPI
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IMemAllocator_fnAddRef(IMemAllocator* iface)
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{
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CMemoryAllocator_THIS(iface,memalloc);
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TRACE("(%p)->()\n",This);
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return IUnknown_AddRef(This->unk.punkControl);
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}
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static ULONG WINAPI
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IMemAllocator_fnRelease(IMemAllocator* iface)
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{
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CMemoryAllocator_THIS(iface,memalloc);
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TRACE("(%p)->()\n",This);
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return IUnknown_Release(This->unk.punkControl);
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}
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static HRESULT WINAPI
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IMemAllocator_fnSetProperties(IMemAllocator* iface,ALLOCATOR_PROPERTIES* pPropReq,ALLOCATOR_PROPERTIES* pPropActual)
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{
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CMemoryAllocator_THIS(iface,memalloc);
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long padding;
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HRESULT hr;
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TRACE( "(%p)->(%p,%p)\n", This, pPropReq, pPropActual );
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if ( pPropReq == NULL || pPropActual == NULL )
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return E_POINTER;
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if ( pPropReq->cBuffers < 0 ||
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pPropReq->cbBuffer < 0 ||
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pPropReq->cbAlign < 0 ||
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pPropReq->cbPrefix < 0 )
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{
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TRACE("pPropReq is invalid\n");
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return E_INVALIDARG;
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}
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if ( pPropReq->cbAlign == 0 ||
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( pPropReq->cbAlign & (pPropReq->cbAlign-1) ) != 0 )
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{
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WARN("cbAlign is invalid - %ld\n",pPropReq->cbAlign);
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return VFW_E_BADALIGN;
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}
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hr = NOERROR;
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EnterCriticalSection( &This->csMem );
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if ( This->pData != NULL || This->ppSamples != NULL )
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{
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/* if commited, properties must not be changed. */
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TRACE("already commited\n");
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hr = E_UNEXPECTED;
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goto end;
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}
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This->prop.cBuffers = pPropReq->cBuffers;
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This->prop.cbBuffer = pPropReq->cbBuffer;
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This->prop.cbAlign = pPropReq->cbAlign;
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This->prop.cbPrefix = pPropReq->cbPrefix;
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if ( This->prop.cbAlign == 0 )
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This->prop.cbAlign = 1;
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padding = This->prop.cbAlign -
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( (This->prop.cbBuffer+This->prop.cbPrefix) % This->prop.cbAlign );
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This->prop.cbBuffer += padding;
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memcpy( pPropActual, &This->prop, sizeof(ALLOCATOR_PROPERTIES) );
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end:
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LeaveCriticalSection( &This->csMem );
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TRACE("returned successfully.\n");
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return hr;
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}
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static HRESULT WINAPI
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IMemAllocator_fnGetProperties(IMemAllocator* iface,ALLOCATOR_PROPERTIES* pProp)
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{
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CMemoryAllocator_THIS(iface,memalloc);
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TRACE( "(%p)->(%p)\n", This, pProp );
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if ( pProp == NULL )
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return E_POINTER;
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EnterCriticalSection( &This->csMem );
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memcpy( pProp, &This->prop, sizeof(ALLOCATOR_PROPERTIES) );
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LeaveCriticalSection( &This->csMem );
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return NOERROR;
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}
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static HRESULT WINAPI
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IMemAllocator_fnCommit(IMemAllocator* iface)
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{
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CMemoryAllocator_THIS(iface,memalloc);
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HRESULT hr;
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LONG lBufSize;
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LONG i;
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BYTE* pCur;
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TRACE( "(%p)->()\n", This );
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EnterCriticalSection( &This->csMem );
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hr = NOERROR;
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/* FIXME - handle in Decommitting */
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if ( This->pData != NULL || This->ppSamples != NULL ||
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This->prop.cBuffers <= 0 )
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goto end;
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lBufSize = This->prop.cBuffers *
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(This->prop.cbBuffer + This->prop.cbPrefix) +
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This->prop.cbAlign;
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if ( lBufSize <= 0 )
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lBufSize = 1;
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This->pData = (BYTE*)QUARTZ_AllocMem( lBufSize );
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if ( This->pData == NULL )
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{
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hr = E_OUTOFMEMORY;
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goto end;
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}
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This->ppSamples = (CMemMediaSample**)QUARTZ_AllocMem(
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sizeof(CMemMediaSample*) * This->prop.cBuffers );
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if ( This->ppSamples == NULL )
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{
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hr = E_OUTOFMEMORY;
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goto end;
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}
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for ( i = 0; i < This->prop.cBuffers; i++ )
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This->ppSamples[i] = NULL;
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pCur = This->pData + This->prop.cbAlign - ((This->pData-(BYTE*)NULL) & (This->prop.cbAlign-1));
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for ( i = 0; i < This->prop.cBuffers; i++ )
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{
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hr = QUARTZ_CreateMemMediaSample(
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pCur, (This->prop.cbBuffer + This->prop.cbPrefix),
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iface, &This->ppSamples[i] );
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if ( FAILED(hr) )
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goto end;
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pCur += (This->prop.cbBuffer + This->prop.cbPrefix);
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}
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hr = NOERROR;
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end:
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if ( FAILED(hr) )
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IMemAllocator_Decommit(iface);
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LeaveCriticalSection( &This->csMem );
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return hr;
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}
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static HRESULT WINAPI
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IMemAllocator_fnDecommit(IMemAllocator* iface)
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{
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CMemoryAllocator_THIS(iface,memalloc);
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TRACE( "(%p)->()\n", This );
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while ( 1 )
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{
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ResetEvent( This->hEventSample );
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/* to avoid deadlock, don't hold critical section while blocking */
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if ( IMemAllocator_ReleaseUnusedBuffer(This) )
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break;
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WaitForSingleObject( This->hEventSample, INFINITE );
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}
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return NOERROR;
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}
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static HRESULT WINAPI
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IMemAllocator_fnGetBuffer(IMemAllocator* iface,IMediaSample** ppSample,REFERENCE_TIME* prtStart,REFERENCE_TIME* prtEnd,DWORD dwFlags)
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{
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CMemoryAllocator_THIS(iface,memalloc);
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HRESULT hr;
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TRACE( "(%p)->(%p,%p,%p,%lu)\n", This, ppSample, prtStart, prtEnd, dwFlags );
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if ( ppSample == NULL )
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return E_POINTER;
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while ( 1 )
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{
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ResetEvent( This->hEventSample );
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/* to avoid deadlock, don't hold critical section while blocking */
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hr = IMemAllocator_LockUnusedBuffer(This,ppSample);
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if ( ( hr != VFW_E_TIMEOUT ) || ( dwFlags & AM_GBF_NOWAIT ) )
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goto end;
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WaitForSingleObject( This->hEventSample, INFINITE );
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}
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end:
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return hr;
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}
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static HRESULT WINAPI
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IMemAllocator_fnReleaseBuffer(IMemAllocator* iface,IMediaSample* pSample)
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{
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CMemoryAllocator_THIS(iface,memalloc);
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TRACE( "(%p)->(%p)\n", This, pSample );
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SetEvent( This->hEventSample );
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return NOERROR;
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}
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static ICOM_VTABLE(IMemAllocator) imemalloc =
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{
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ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
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/* IUnknown fields */
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IMemAllocator_fnQueryInterface,
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IMemAllocator_fnAddRef,
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IMemAllocator_fnRelease,
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/* IMemAllocator fields */
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IMemAllocator_fnSetProperties,
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IMemAllocator_fnGetProperties,
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IMemAllocator_fnCommit,
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IMemAllocator_fnDecommit,
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IMemAllocator_fnGetBuffer,
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IMemAllocator_fnReleaseBuffer,
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};
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HRESULT CMemoryAllocator_InitIMemAllocator( CMemoryAllocator* pma )
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{
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TRACE("(%p)\n",pma);
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ICOM_VTBL(&pma->memalloc) = &imemalloc;
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ZeroMemory( &pma->prop, sizeof(pma->prop) );
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pma->hEventSample = (HANDLE)NULL;
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pma->pData = NULL;
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pma->ppSamples = NULL;
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pma->hEventSample = CreateEventA( NULL, TRUE, FALSE, NULL );
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if ( pma->hEventSample == (HANDLE)NULL )
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return E_OUTOFMEMORY;
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InitializeCriticalSection( &pma->csMem );
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return NOERROR;
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}
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void CMemoryAllocator_UninitIMemAllocator( CMemoryAllocator* pma )
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{
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TRACE("(%p)\n",pma);
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IMemAllocator_Decommit( (IMemAllocator*)(&pma->memalloc) );
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DeleteCriticalSection( &pma->csMem );
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if ( pma->hEventSample != (HANDLE)NULL )
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CloseHandle( pma->hEventSample );
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}
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