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Sweden-Number/dlls/quartz/memallocator.c

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/*
* Memory Allocator and Media Sample Implementation
*
* Copyright 2003 Robert Shearman
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <assert.h>
#include <limits.h>
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "vfwmsgs.h"
#include "quartz_private.h"
#include "wine/list.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(quartz);
void dump_AM_SAMPLE2_PROPERTIES(AM_SAMPLE2_PROPERTIES * pProps)
{
if (!pProps)
{
TRACE("AM_SAMPLE2_PROPERTIES: (null)\n");
return;
}
TRACE("\tcbData: %ld\n", pProps->cbData);
TRACE("\tdwTypeSpecificFlags: 0x%8lx\n", pProps->dwTypeSpecificFlags);
TRACE("\tdwSampleFlags: 0x%8lx\n", pProps->dwSampleFlags);
TRACE("\tlActual: %ld\n", pProps->lActual);
TRACE("\ttStart: %lx%08lx%s\n", (LONG)(pProps->tStart >> 32), (LONG)pProps->tStart, pProps->dwSampleFlags & AM_SAMPLE_TIMEVALID ? "" : " (not valid)");
TRACE("\ttStop: %lx%08lx%s\n", (LONG)(pProps->tStop >> 32), (LONG)pProps->tStop, pProps->dwSampleFlags & AM_SAMPLE_STOPVALID ? "" : " (not valid)");
TRACE("\tdwStreamId: 0x%lx\n", pProps->dwStreamId);
TRACE("\tpMediaType: %p\n", pProps->pMediaType);
TRACE("\tpbBuffer: %p\n", pProps->pbBuffer);
TRACE("\tcbBuffer: %ld\n", pProps->cbBuffer);
}
typedef struct BaseMemAllocator
{
const IMemAllocatorVtbl * lpVtbl;
ULONG ref;
ALLOCATOR_PROPERTIES * pProps;
CRITICAL_SECTION csState;
HRESULT (* fnAlloc) (IMemAllocator *);
HRESULT (* fnFree)(IMemAllocator *);
HANDLE hSemWaiting;
BOOL bDecommitQueued;
BOOL bCommitted;
LONG lWaiting;
struct list free_list;
struct list used_list;
} BaseMemAllocator;
typedef struct StdMediaSample2
{
const IMediaSample2Vtbl * lpvtbl;
ULONG ref;
AM_SAMPLE2_PROPERTIES props;
IMemAllocator * pParent;
struct list listentry;
LONGLONG tMediaStart;
LONGLONG tMediaEnd;
} StdMediaSample2;
static const struct IMemAllocatorVtbl BaseMemAllocator_VTable;
static const struct IMediaSample2Vtbl StdMediaSample2_VTable;
#define AM_SAMPLE2_PROP_SIZE_WRITABLE (unsigned int)(&((AM_SAMPLE2_PROPERTIES *)0)->pbBuffer)
#ifdef _I64_MAX
#define INVALID_MEDIA_TIME _I64_MAX
#else
#define INVALID_MEDIA_TIME ((long long)(~0ull >> 1))
#endif
static HRESULT BaseMemAllocator_Init(HRESULT (* fnAlloc)(IMemAllocator *), HRESULT (* fnFree)(IMemAllocator *), BaseMemAllocator * pMemAlloc)
{
assert(fnAlloc && fnFree);
pMemAlloc->lpVtbl = &BaseMemAllocator_VTable;
pMemAlloc->ref = 1;
pMemAlloc->pProps = NULL;
list_init(&pMemAlloc->free_list);
list_init(&pMemAlloc->used_list);
pMemAlloc->fnAlloc = fnAlloc;
pMemAlloc->fnFree = fnFree;
pMemAlloc->bDecommitQueued = FALSE;
pMemAlloc->bCommitted = FALSE;
pMemAlloc->hSemWaiting = NULL;
pMemAlloc->lWaiting = 0;
InitializeCriticalSection(&pMemAlloc->csState);
return S_OK;
}
static HRESULT WINAPI BaseMemAllocator_QueryInterface(IMemAllocator * iface, REFIID riid, LPVOID * ppv)
{
ICOM_THIS(BaseMemAllocator, iface);
TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
*ppv = NULL;
if (IsEqualIID(riid, &IID_IUnknown))
*ppv = (LPVOID)This;
else if (IsEqualIID(riid, &IID_IMemAllocator))
*ppv = (LPVOID)This;
if (*ppv)
{
IUnknown_AddRef((IUnknown *)(*ppv));
return S_OK;
}
FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
return E_NOINTERFACE;
}
static ULONG WINAPI BaseMemAllocator_AddRef(IMemAllocator * iface)
{
ICOM_THIS(BaseMemAllocator, iface);
TRACE("()\n");
return InterlockedIncrement(&This->ref);
}
static ULONG WINAPI BaseMemAllocator_Release(IMemAllocator * iface)
{
ICOM_THIS(BaseMemAllocator, iface);
TRACE("()\n");
if (!InterlockedDecrement(&This->ref))
{
CloseHandle(This->hSemWaiting);
if (This->bCommitted)
This->fnFree(iface);
if (This->pProps)
HeapFree(GetProcessHeap(), 0, This->pProps);
CoTaskMemFree(This);
return 0;
}
return This->ref;
}
static HRESULT WINAPI BaseMemAllocator_SetProperties(IMemAllocator * iface, ALLOCATOR_PROPERTIES *pRequest, ALLOCATOR_PROPERTIES *pActual)
{
ICOM_THIS(BaseMemAllocator, iface);
HRESULT hr;
TRACE("(%p, %p)\n", pRequest, pActual);
EnterCriticalSection(&This->csState);
{
if (!list_empty(&This->used_list))
hr = VFW_E_BUFFERS_OUTSTANDING;
else if (This->bCommitted)
hr = VFW_E_ALREADY_COMMITTED;
else
{
if (!This->pProps)
This->pProps = HeapAlloc(GetProcessHeap(), 0, sizeof(*This->pProps));
if (!This->pProps)
hr = E_OUTOFMEMORY;
else
{
memcpy(This->pProps, pRequest, sizeof(*This->pProps));
memcpy(pActual, pRequest, sizeof(*pActual));
hr = S_OK;
}
}
}
LeaveCriticalSection(&This->csState);
return hr;
}
static HRESULT WINAPI BaseMemAllocator_GetProperties(IMemAllocator * iface, ALLOCATOR_PROPERTIES *pProps)
{
ICOM_THIS(BaseMemAllocator, iface);
HRESULT hr = S_OK;
TRACE("(%p)\n", pProps);
EnterCriticalSection(&This->csState);
{
/* NOTE: this is different from the native version.
* It would silently succeed if the properties had
* not been set, but would fail further on down the
* line with some obscure error like having an
* invalid alignment. Whether or not our version
* will cause any problems remains to be seen */
if (!This->pProps)
hr = VFW_E_SIZENOTSET;
else
memcpy(pProps, This->pProps, sizeof(*pProps));
}
LeaveCriticalSection(&This->csState);
return hr;
}
static HRESULT WINAPI BaseMemAllocator_Commit(IMemAllocator * iface)
{
ICOM_THIS(BaseMemAllocator, iface);
HRESULT hr;
TRACE("()\n");
EnterCriticalSection(&This->csState);
{
if (!This->pProps)
hr = VFW_E_SIZENOTSET;
else if (This->bCommitted)
hr = VFW_E_ALREADY_COMMITTED;
else if (This->bDecommitQueued)
{
This->bDecommitQueued = FALSE;
hr = S_OK;
}
else
{
if (!(This->hSemWaiting = CreateSemaphoreW(NULL, This->pProps->cBuffers, This->pProps->cBuffers, NULL)))
{
ERR("Couldn't create semaphore (error was %ld)\n", GetLastError());
hr = HRESULT_FROM_WIN32(GetLastError());
}
else
{
hr = This->fnAlloc(iface);
if (SUCCEEDED(hr))
This->bCommitted = TRUE;
else
ERR("fnAlloc failed with error 0x%lx\n", hr);
}
}
}
LeaveCriticalSection(&This->csState);
return hr;
}
static HRESULT WINAPI BaseMemAllocator_Decommit(IMemAllocator * iface)
{
ICOM_THIS(BaseMemAllocator, iface);
HRESULT hr;
TRACE("()\n");
EnterCriticalSection(&This->csState);
{
if (!This->bCommitted)
hr = VFW_E_NOT_COMMITTED;
else
{
if (!list_empty(&This->used_list))
{
This->bDecommitQueued = TRUE;
/* notify ALL waiting threads that they cannot be allocated a buffer any more */
ReleaseSemaphore(This->hSemWaiting, This->lWaiting, NULL);
hr = S_OK;
}
else
{
assert(This->lWaiting == 0);
This->bCommitted = FALSE;
CloseHandle(This->hSemWaiting);
This->hSemWaiting = NULL;
hr = This->fnFree(iface);
if (FAILED(hr))
ERR("fnFree failed with error 0x%lx\n", hr);
}
}
}
LeaveCriticalSection(&This->csState);
return hr;
}
static HRESULT WINAPI BaseMemAllocator_GetBuffer(IMemAllocator * iface, IMediaSample ** pSample, REFERENCE_TIME *pStartTime, REFERENCE_TIME *pEndTime, DWORD dwFlags)
{
ICOM_THIS(BaseMemAllocator, iface);
HRESULT hr = S_OK;
/* NOTE: The pStartTime and pEndTime parameters are not applied to the sample.
* The allocator might use these values to determine which buffer it retrieves */
TRACE("(%p, %p, %p, %lx)\n", pSample, pStartTime, pEndTime, dwFlags);
*pSample = NULL;
if (!This->bCommitted)
return VFW_E_NOT_COMMITTED;
This->lWaiting++;
if (WaitForSingleObject(This->hSemWaiting, (dwFlags & AM_GBF_NOWAIT) ? 0 : INFINITE) != WAIT_OBJECT_0)
{
This->lWaiting--;
return VFW_E_TIMEOUT;
}
This->lWaiting--;
EnterCriticalSection(&This->csState);
{
if (!This->bCommitted)
hr = VFW_E_NOT_COMMITTED;
else if (This->bDecommitQueued)
hr = VFW_E_TIMEOUT;
else
{
struct list * free = list_head(&This->free_list);
list_remove(free);
list_add_head(&This->used_list, free);
*pSample = (IMediaSample *)LIST_ENTRY(free, StdMediaSample2, listentry);
assert(((StdMediaSample2 *)*pSample)->ref == 0);
IMediaSample_AddRef(*pSample);
}
}
LeaveCriticalSection(&This->csState);
return hr;
}
static HRESULT WINAPI BaseMemAllocator_ReleaseBuffer(IMemAllocator * iface, IMediaSample * pSample)
{
ICOM_THIS(BaseMemAllocator, iface);
StdMediaSample2 * pStdSample = (StdMediaSample2 *)pSample;
HRESULT hr = S_OK;
TRACE("(%p)\n", pSample);
/* FIXME: make sure that sample is currently on the used list */
/* FIXME: we should probably check the ref count on the sample before freeing
* it to make sure that it is not still in use */
EnterCriticalSection(&This->csState);
{
if (!This->bCommitted)
ERR("Releasing a buffer when the allocator is not committed?!?\n");
/* remove from used_list */
list_remove(&pStdSample->listentry);
list_add_head(&This->free_list, &pStdSample->listentry);
if (list_empty(&This->used_list) && This->bDecommitQueued && This->bCommitted)
{
HRESULT hrfree;
assert(This->lWaiting == 0);
This->bCommitted = FALSE;
This->bDecommitQueued = FALSE;
CloseHandle(This->hSemWaiting);
This->hSemWaiting = NULL;
if (FAILED(hrfree = This->fnFree(iface)))
ERR("fnFree failed with error 0x%lx\n", hrfree);
}
}
LeaveCriticalSection(&This->csState);
/* notify a waiting thread that there is now a free buffer */
if (!ReleaseSemaphore(This->hSemWaiting, 1, NULL))
{
ERR("ReleaseSemaphore failed with error %ld\n", GetLastError());
hr = HRESULT_FROM_WIN32(GetLastError());
}
return hr;
}
static const IMemAllocatorVtbl BaseMemAllocator_VTable =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
BaseMemAllocator_QueryInterface,
BaseMemAllocator_AddRef,
BaseMemAllocator_Release,
BaseMemAllocator_SetProperties,
BaseMemAllocator_GetProperties,
BaseMemAllocator_Commit,
BaseMemAllocator_Decommit,
BaseMemAllocator_GetBuffer,
BaseMemAllocator_ReleaseBuffer
};
static HRESULT StdMediaSample2_Construct(BYTE * pbBuffer, LONG cbBuffer, IMemAllocator * pParent, StdMediaSample2 ** ppSample)
{
assert(pbBuffer && pParent && (cbBuffer > 0));
if (!(*ppSample = CoTaskMemAlloc(sizeof(StdMediaSample2))))
return E_OUTOFMEMORY;
(*ppSample)->lpvtbl = &StdMediaSample2_VTable;
(*ppSample)->ref = 0;
ZeroMemory(&(*ppSample)->props, sizeof((*ppSample)->props));
/* NOTE: no need to AddRef as the parent is guaranteed to be around
* at least as long as us and we don't want to create circular
* dependencies on the ref count */
(*ppSample)->pParent = pParent;
(*ppSample)->props.cbData = sizeof(AM_SAMPLE2_PROPERTIES);
(*ppSample)->props.cbBuffer = (*ppSample)->props.lActual = cbBuffer;
(*ppSample)->props.pbBuffer = pbBuffer;
(*ppSample)->tMediaStart = INVALID_MEDIA_TIME;
(*ppSample)->tMediaEnd = 0;
return S_OK;
}
static void StdMediaSample2_Delete(StdMediaSample2 * This)
{
/* NOTE: does not remove itself from the list it belongs to */
CoTaskMemFree(This);
}
static HRESULT WINAPI StdMediaSample2_QueryInterface(IMediaSample2 * iface, REFIID riid, LPVOID * ppv)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
*ppv = NULL;
if (IsEqualIID(riid, &IID_IUnknown))
*ppv = (LPVOID)This;
else if (IsEqualIID(riid, &IID_IMediaSample))
*ppv = (LPVOID)This;
else if (IsEqualIID(riid, &IID_IMediaSample2))
*ppv = (LPVOID)This;
if (*ppv)
{
IUnknown_AddRef((IUnknown *)(*ppv));
return S_OK;
}
FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
return E_NOINTERFACE;
}
static ULONG WINAPI StdMediaSample2_AddRef(IMediaSample2 * iface)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%p)->() AddRef from %ld\n", iface, This->ref);
return InterlockedIncrement(&This->ref);
}
static ULONG WINAPI StdMediaSample2_Release(IMediaSample2 * iface)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%p)->() Release from %ld\n", iface, This->ref);
if (!InterlockedDecrement(&This->ref))
{
IMemAllocator_ReleaseBuffer(This->pParent, (IMediaSample *)iface);
return 0;
}
return This->ref;
}
static HRESULT WINAPI StdMediaSample2_GetPointer(IMediaSample2 * iface, BYTE ** ppBuffer)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%p)\n", ppBuffer);
*ppBuffer = This->props.pbBuffer;
return S_OK;
}
static long WINAPI StdMediaSample2_GetSize(IMediaSample2 * iface)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("StdMediaSample2_GetSize()\n");
return This->props.cbBuffer;
}
static HRESULT WINAPI StdMediaSample2_GetTime(IMediaSample2 * iface, REFERENCE_TIME * pStart, REFERENCE_TIME * pEnd)
{
HRESULT hr;
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%p, %p)\n", pStart, pEnd);
if (!(This->props.dwSampleFlags & AM_SAMPLE_TIMEVALID))
hr = VFW_E_SAMPLE_TIME_NOT_SET;
else if (!(This->props.dwSampleFlags & AM_SAMPLE_STOPVALID))
{
*pStart = This->props.tStart;
*pEnd = This->props.tStart + 1;
hr = VFW_S_NO_STOP_TIME;
}
else
{
*pStart = This->props.tStart;
*pEnd = This->props.tStop;
hr = S_OK;
}
return S_OK;
}
static HRESULT WINAPI StdMediaSample2_SetTime(IMediaSample2 * iface, REFERENCE_TIME * pStart, REFERENCE_TIME * pEnd)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%p, %p)\n", pStart, pEnd);
if (pStart)
{
This->props.tStart = *pStart;
This->props.dwSampleFlags |= AM_SAMPLE_TIMEVALID;
}
else
This->props.dwSampleFlags &= ~AM_SAMPLE_TIMEVALID;
if (pEnd)
{
This->props.tStop = *pEnd;
This->props.dwSampleFlags |= AM_SAMPLE_STOPVALID;
}
else
This->props.dwSampleFlags &= ~AM_SAMPLE_STOPVALID;
return S_OK;
}
static HRESULT WINAPI StdMediaSample2_IsSyncPoint(IMediaSample2 * iface)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("()\n");
return (This->props.dwSampleFlags & AM_SAMPLE_SPLICEPOINT) ? S_OK : S_FALSE;
}
static HRESULT WINAPI StdMediaSample2_SetSyncPoint(IMediaSample2 * iface, BOOL bIsSyncPoint)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%s)\n", bIsSyncPoint ? "TRUE" : "FALSE");
This->props.dwSampleFlags = (This->props.dwSampleFlags & ~AM_SAMPLE_SPLICEPOINT) | bIsSyncPoint ? AM_SAMPLE_SPLICEPOINT : 0;
return S_OK;
}
static HRESULT WINAPI StdMediaSample2_IsPreroll(IMediaSample2 * iface)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("()\n");
return (This->props.dwSampleFlags & AM_SAMPLE_PREROLL) ? S_OK : S_FALSE;
}
static HRESULT WINAPI StdMediaSample2_SetPreroll(IMediaSample2 * iface, BOOL bIsPreroll)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%s)\n", bIsPreroll ? "TRUE" : "FALSE");
This->props.dwSampleFlags = (This->props.dwSampleFlags & ~AM_SAMPLE_PREROLL) | bIsPreroll ? AM_SAMPLE_PREROLL : 0;
return S_OK;
}
static LONG WINAPI StdMediaSample2_GetActualDataLength(IMediaSample2 * iface)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("()\n");
return This->props.lActual;
}
static HRESULT WINAPI StdMediaSample2_SetActualDataLength(IMediaSample2 * iface, LONG len)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%ld)\n", len);
if ((len > This->props.cbBuffer) || (len < 0))
return VFW_E_BUFFER_OVERFLOW;
else
{
This->props.lActual = len;
return S_OK;
}
}
static HRESULT WINAPI StdMediaSample2_GetMediaType(IMediaSample2 * iface, AM_MEDIA_TYPE ** ppMediaType)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%p)\n", ppMediaType);
if (!This->props.pMediaType)
return S_FALSE;
if (!(*ppMediaType = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE))))
return E_OUTOFMEMORY;
return CopyMediaType(*ppMediaType, This->props.pMediaType);
}
static HRESULT WINAPI StdMediaSample2_SetMediaType(IMediaSample2 * iface, AM_MEDIA_TYPE * pMediaType)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%p)\n", pMediaType);
if (This->props.pMediaType)
DeleteMediaType(This->props.pMediaType);
else if (!(This->props.pMediaType = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE))))
return E_OUTOFMEMORY;
return CopyMediaType(This->props.pMediaType, pMediaType);
}
static HRESULT WINAPI StdMediaSample2_IsDiscontinuity(IMediaSample2 * iface)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("()\n");
return (This->props.dwSampleFlags & AM_SAMPLE_DATADISCONTINUITY) ? S_OK : S_FALSE;
}
static HRESULT WINAPI StdMediaSample2_SetDiscontinuity(IMediaSample2 * iface, BOOL bIsDiscontinuity)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%s)\n", bIsDiscontinuity ? "TRUE" : "FALSE");
This->props.dwSampleFlags = (This->props.dwSampleFlags & ~AM_SAMPLE_DATADISCONTINUITY) | bIsDiscontinuity ? AM_SAMPLE_DATADISCONTINUITY : 0;
return S_OK;
}
static HRESULT WINAPI StdMediaSample2_GetMediaTime(IMediaSample2 * iface, LONGLONG * pStart, LONGLONG * pEnd)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%p, %p)\n", pStart, pEnd);
if (This->tMediaStart == INVALID_MEDIA_TIME)
return VFW_E_MEDIA_TIME_NOT_SET;
*pStart = This->tMediaStart;
*pEnd = This->tMediaEnd;
return E_NOTIMPL;
}
static HRESULT WINAPI StdMediaSample2_SetMediaTime(IMediaSample2 * iface, LONGLONG * pStart, LONGLONG * pEnd)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%p, %p)\n", pStart, pEnd);
if (pStart)
This->tMediaStart = *pStart;
else
This->tMediaStart = INVALID_MEDIA_TIME;
if (pEnd)
This->tMediaEnd = *pEnd;
else
This->tMediaEnd = 0;
return S_OK;
}
static HRESULT WINAPI StdMediaSample2_GetProperties(IMediaSample2 * iface, DWORD cbProperties, BYTE * pbProperties)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%ld, %p)\n", cbProperties, pbProperties);
memcpy(pbProperties, &This->props, min(cbProperties, sizeof(This->props)));
return S_OK;
}
static HRESULT WINAPI StdMediaSample2_SetProperties(IMediaSample2 * iface, DWORD cbProperties, const BYTE * pbProperties)
{
ICOM_THIS(StdMediaSample2, iface);
TRACE("(%ld, %p)\n", cbProperties, pbProperties);
/* NOTE: pbBuffer and cbBuffer are read-only */
memcpy(&This->props, pbProperties, min(cbProperties, AM_SAMPLE2_PROP_SIZE_WRITABLE));
return S_OK;
}
static const IMediaSample2Vtbl StdMediaSample2_VTable =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
StdMediaSample2_QueryInterface,
StdMediaSample2_AddRef,
StdMediaSample2_Release,
StdMediaSample2_GetPointer,
StdMediaSample2_GetSize,
StdMediaSample2_GetTime,
StdMediaSample2_SetTime,
StdMediaSample2_IsSyncPoint,
StdMediaSample2_SetSyncPoint,
StdMediaSample2_IsPreroll,
StdMediaSample2_SetPreroll,
StdMediaSample2_GetActualDataLength,
StdMediaSample2_SetActualDataLength,
StdMediaSample2_GetMediaType,
StdMediaSample2_SetMediaType,
StdMediaSample2_IsDiscontinuity,
StdMediaSample2_SetDiscontinuity,
StdMediaSample2_GetMediaTime,
StdMediaSample2_SetMediaTime,
StdMediaSample2_GetProperties,
StdMediaSample2_SetProperties
};
typedef struct StdMemAllocator
{
BaseMemAllocator base;
LPVOID pMemory;
} StdMemAllocator;
static HRESULT StdMemAllocator_Alloc(IMemAllocator * iface)
{
ICOM_THIS(StdMemAllocator, iface);
StdMediaSample2 * pSample = NULL;
SYSTEM_INFO si;
long i;
assert(list_empty(&This->base.free_list));
/* check alignment */
GetSystemInfo(&si);
/* we do not allow a courser alignment than the OS page size */
if ((si.dwPageSize % This->base.pProps->cbAlign) != 0)
return VFW_E_BADALIGN;
/* FIXME: each sample has to have its buffer start on the right alignment.
* We don't do this at the moment */
/* allocate memory */
This->pMemory = VirtualAlloc(NULL, (This->base.pProps->cbBuffer + This->base.pProps->cbPrefix) * This->base.pProps->cBuffers, MEM_COMMIT, PAGE_READWRITE);
for (i = This->base.pProps->cBuffers - 1; i >= 0; i--)
{
/* pbBuffer does not start at the base address, it starts at base + cbPrefix */
BYTE * pbBuffer = (BYTE *)This->pMemory + i * (This->base.pProps->cbBuffer + This->base.pProps->cbPrefix) + This->base.pProps->cbPrefix;
StdMediaSample2_Construct(pbBuffer, This->base.pProps->cbBuffer, iface, &pSample);
list_add_head(&This->base.free_list, &pSample->listentry);
}
return S_OK;
}
static HRESULT StdMemAllocator_Free(IMemAllocator * iface)
{
ICOM_THIS(StdMemAllocator, iface);
struct list * cursor;
assert(list_empty(&This->base.used_list));
while ((cursor = list_head(&This->base.free_list)) != NULL)
{
list_remove(cursor);
StdMediaSample2_Delete(LIST_ENTRY(cursor, StdMediaSample2, listentry));
}
/* free memory */
if (!VirtualFree(This->pMemory, 0, MEM_RELEASE))
{
ERR("Couldn't free memory. Error: %ld\n", GetLastError());
return HRESULT_FROM_WIN32(GetLastError());
}
return S_OK;
}
HRESULT StdMemAllocator_create(LPUNKNOWN lpUnkOuter, LPVOID * ppv)
{
StdMemAllocator * pMemAlloc;
HRESULT hr;
*ppv = NULL;
if (lpUnkOuter)
return CLASS_E_NOAGGREGATION;
if (!(pMemAlloc = CoTaskMemAlloc(sizeof(*pMemAlloc))))
return E_OUTOFMEMORY;
pMemAlloc->pMemory = NULL;
if (SUCCEEDED(hr = BaseMemAllocator_Init(StdMemAllocator_Alloc, StdMemAllocator_Free, &pMemAlloc->base)))
*ppv = (LPVOID)pMemAlloc;
else
CoTaskMemFree(pMemAlloc);
return hr;
}
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