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3c2dfd186a
This allows the standardization of the "class" functions to use the class as the argument and will aid in expanding the implementation of these functions.
302 lines
8.9 KiB
C
302 lines
8.9 KiB
C
/*
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* Implementation of MedaType utility functions
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*
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* Copyright 2003 Robert Shearman
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* Copyright 2010 Aric Stewart, CodeWeavers
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#define COBJMACROS
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#include "dshow.h"
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#include "wine/strmbase.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
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HRESULT WINAPI CopyMediaType(AM_MEDIA_TYPE * pDest, const AM_MEDIA_TYPE *pSrc)
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{
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*pDest = *pSrc;
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if (!pSrc->pbFormat) return S_OK;
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if (!(pDest->pbFormat = CoTaskMemAlloc(pSrc->cbFormat)))
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return E_OUTOFMEMORY;
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memcpy(pDest->pbFormat, pSrc->pbFormat, pSrc->cbFormat);
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if (pDest->pUnk)
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IUnknown_AddRef(pDest->pUnk);
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return S_OK;
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}
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void WINAPI FreeMediaType(AM_MEDIA_TYPE * pMediaType)
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{
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if (pMediaType->pbFormat)
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{
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CoTaskMemFree(pMediaType->pbFormat);
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pMediaType->pbFormat = NULL;
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}
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if (pMediaType->pUnk)
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{
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IUnknown_Release(pMediaType->pUnk);
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pMediaType->pUnk = NULL;
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}
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}
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AM_MEDIA_TYPE * WINAPI CreateMediaType(AM_MEDIA_TYPE const * pSrc)
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{
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AM_MEDIA_TYPE * pDest;
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pDest = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE));
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if (!pDest)
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return NULL;
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if (FAILED(CopyMediaType(pDest, pSrc)))
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{
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CoTaskMemFree(pDest);
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return NULL;
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}
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return pDest;
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}
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void WINAPI DeleteMediaType(AM_MEDIA_TYPE * pMediaType)
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{
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FreeMediaType(pMediaType);
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CoTaskMemFree(pMediaType);
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}
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typedef struct tagENUMEDIADETAILS
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{
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ULONG cMediaTypes;
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AM_MEDIA_TYPE * pMediaTypes;
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} ENUMMEDIADETAILS;
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typedef struct IEnumMediaTypesImpl
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{
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const IEnumMediaTypesVtbl * lpVtbl;
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LONG refCount;
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BasePin *basePin;
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BasePin_GetMediaType enumMediaFunction;
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BasePin_GetMediaTypeVersion mediaVersionFunction;
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LONG currentVersion;
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ENUMMEDIADETAILS enumMediaDetails;
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ULONG uIndex;
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} IEnumMediaTypesImpl;
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static const struct IEnumMediaTypesVtbl IEnumMediaTypesImpl_Vtbl;
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HRESULT WINAPI EnumMediaTypes_Construct(BasePin *basePin, BasePin_GetMediaType enumFunc, BasePin_GetMediaTypeVersion versionFunc, IEnumMediaTypes ** ppEnum)
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{
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ULONG i;
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IEnumMediaTypesImpl * pEnumMediaTypes = CoTaskMemAlloc(sizeof(IEnumMediaTypesImpl));
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AM_MEDIA_TYPE amt;
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if (!pEnumMediaTypes)
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{
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*ppEnum = NULL;
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return E_OUTOFMEMORY;
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}
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pEnumMediaTypes->lpVtbl = &IEnumMediaTypesImpl_Vtbl;
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pEnumMediaTypes->refCount = 1;
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pEnumMediaTypes->uIndex = 0;
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pEnumMediaTypes->enumMediaFunction = enumFunc;
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pEnumMediaTypes->mediaVersionFunction = versionFunc;
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IPin_AddRef((IPin*)basePin);
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pEnumMediaTypes->basePin = basePin;
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i = 0;
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while (enumFunc(basePin,i,&amt) == S_OK) i++;
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pEnumMediaTypes->enumMediaDetails.cMediaTypes = i;
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pEnumMediaTypes->enumMediaDetails.pMediaTypes = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE) * i);
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for (i = 0; i < pEnumMediaTypes->enumMediaDetails.cMediaTypes; i++)
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{
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enumFunc(basePin,i,&amt);
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if (FAILED(CopyMediaType(&pEnumMediaTypes->enumMediaDetails.pMediaTypes[i], &amt)))
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{
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while (i--)
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CoTaskMemFree(pEnumMediaTypes->enumMediaDetails.pMediaTypes[i].pbFormat);
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CoTaskMemFree(pEnumMediaTypes->enumMediaDetails.pMediaTypes);
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return E_OUTOFMEMORY;
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}
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}
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*ppEnum = (IEnumMediaTypes *)(&pEnumMediaTypes->lpVtbl);
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pEnumMediaTypes->currentVersion = versionFunc(basePin);
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return S_OK;
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}
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static HRESULT WINAPI IEnumMediaTypesImpl_QueryInterface(IEnumMediaTypes * iface, REFIID riid, LPVOID * ppv)
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{
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TRACE("(%s, %p)\n", debugstr_guid(riid), ppv);
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*ppv = NULL;
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if (IsEqualIID(riid, &IID_IUnknown))
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*ppv = iface;
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else if (IsEqualIID(riid, &IID_IEnumMediaTypes))
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*ppv = iface;
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if (*ppv)
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{
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IUnknown_AddRef((IUnknown *)(*ppv));
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return S_OK;
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}
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FIXME("No interface for %s!\n", debugstr_guid(riid));
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return E_NOINTERFACE;
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}
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static ULONG WINAPI IEnumMediaTypesImpl_AddRef(IEnumMediaTypes * iface)
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{
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IEnumMediaTypesImpl *This = (IEnumMediaTypesImpl *)iface;
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ULONG refCount = InterlockedIncrement(&This->refCount);
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TRACE("(%p)->() AddRef from %d\n", iface, refCount - 1);
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return refCount;
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}
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static ULONG WINAPI IEnumMediaTypesImpl_Release(IEnumMediaTypes * iface)
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{
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IEnumMediaTypesImpl *This = (IEnumMediaTypesImpl *)iface;
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ULONG refCount = InterlockedDecrement(&This->refCount);
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TRACE("(%p)->() Release from %d\n", iface, refCount + 1);
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if (!refCount)
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{
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ULONG i;
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for (i = 0; i < This->enumMediaDetails.cMediaTypes; i++)
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if (This->enumMediaDetails.pMediaTypes[i].pbFormat)
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CoTaskMemFree(This->enumMediaDetails.pMediaTypes[i].pbFormat);
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CoTaskMemFree(This->enumMediaDetails.pMediaTypes);
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IPin_Release((IPin*)This->basePin);
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CoTaskMemFree(This);
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}
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return refCount;
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}
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static HRESULT WINAPI IEnumMediaTypesImpl_Next(IEnumMediaTypes * iface, ULONG cMediaTypes, AM_MEDIA_TYPE ** ppMediaTypes, ULONG * pcFetched)
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{
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ULONG cFetched;
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IEnumMediaTypesImpl *This = (IEnumMediaTypesImpl *)iface;
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cFetched = min(This->enumMediaDetails.cMediaTypes, This->uIndex + cMediaTypes) - This->uIndex;
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if (This->currentVersion != This->mediaVersionFunction(This->basePin))
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return VFW_E_ENUM_OUT_OF_SYNC;
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TRACE("(%u, %p, %p)\n", cMediaTypes, ppMediaTypes, pcFetched);
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TRACE("Next uIndex: %u, cFetched: %u\n", This->uIndex, cFetched);
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if (cFetched > 0)
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{
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ULONG i;
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for (i = 0; i < cFetched; i++)
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if (!(ppMediaTypes[i] = CreateMediaType(&This->enumMediaDetails.pMediaTypes[This->uIndex + i])))
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{
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while (i--)
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DeleteMediaType(ppMediaTypes[i]);
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*pcFetched = 0;
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return E_OUTOFMEMORY;
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}
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}
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if ((cMediaTypes != 1) || pcFetched)
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*pcFetched = cFetched;
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This->uIndex += cFetched;
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if (cFetched != cMediaTypes)
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return S_FALSE;
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return S_OK;
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}
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static HRESULT WINAPI IEnumMediaTypesImpl_Skip(IEnumMediaTypes * iface, ULONG cMediaTypes)
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{
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IEnumMediaTypesImpl *This = (IEnumMediaTypesImpl *)iface;
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TRACE("(%u)\n", cMediaTypes);
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if (This->currentVersion != This->mediaVersionFunction(This->basePin))
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return VFW_E_ENUM_OUT_OF_SYNC;
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if (This->uIndex + cMediaTypes < This->enumMediaDetails.cMediaTypes)
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{
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This->uIndex += cMediaTypes;
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return S_OK;
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}
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return S_FALSE;
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}
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static HRESULT WINAPI IEnumMediaTypesImpl_Reset(IEnumMediaTypes * iface)
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{
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ULONG i;
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AM_MEDIA_TYPE amt;
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IEnumMediaTypesImpl *This = (IEnumMediaTypesImpl *)iface;
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TRACE("()\n");
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for (i = 0; i < This->enumMediaDetails.cMediaTypes; i++)
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if (This->enumMediaDetails.pMediaTypes[i].pbFormat)
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CoTaskMemFree(This->enumMediaDetails.pMediaTypes[i].pbFormat);
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CoTaskMemFree(This->enumMediaDetails.pMediaTypes);
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i = 0;
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while (This->enumMediaFunction(This->basePin, i,&amt) == S_OK) i++;
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This->enumMediaDetails.cMediaTypes = i;
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This->enumMediaDetails.pMediaTypes = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE) * i);
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for (i = 0; i < This->enumMediaDetails.cMediaTypes; i++)
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{
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This->enumMediaFunction(This->basePin, i,&amt);
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if (FAILED(CopyMediaType(&This->enumMediaDetails.pMediaTypes[i], &amt)))
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{
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while (i--)
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CoTaskMemFree(This->enumMediaDetails.pMediaTypes[i].pbFormat);
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CoTaskMemFree(This->enumMediaDetails.pMediaTypes);
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return E_OUTOFMEMORY;
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}
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}
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This->currentVersion = This->mediaVersionFunction(This->basePin);
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This->uIndex = 0;
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return S_OK;
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}
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static HRESULT WINAPI IEnumMediaTypesImpl_Clone(IEnumMediaTypes * iface, IEnumMediaTypes ** ppEnum)
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{
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HRESULT hr;
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IEnumMediaTypesImpl *This = (IEnumMediaTypesImpl *)iface;
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TRACE("(%p)\n", ppEnum);
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hr = EnumMediaTypes_Construct(This->basePin, This->enumMediaFunction, This->mediaVersionFunction, ppEnum);
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if (FAILED(hr))
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return hr;
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return IEnumMediaTypes_Skip(*ppEnum, This->uIndex);
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}
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static const IEnumMediaTypesVtbl IEnumMediaTypesImpl_Vtbl =
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{
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IEnumMediaTypesImpl_QueryInterface,
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IEnumMediaTypesImpl_AddRef,
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IEnumMediaTypesImpl_Release,
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IEnumMediaTypesImpl_Next,
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IEnumMediaTypesImpl_Skip,
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IEnumMediaTypesImpl_Reset,
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IEnumMediaTypesImpl_Clone
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};
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