261 lines
7.6 KiB
C
261 lines
7.6 KiB
C
/*
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* Implementation of IEnumMediaTypes Interface
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*
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* Copyright 2003 Robert Shearman
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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 "quartz_private.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(quartz);
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HRESULT CopyMediaType(AM_MEDIA_TYPE * pDest, const AM_MEDIA_TYPE *pSrc)
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{
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memcpy(pDest, pSrc, sizeof(AM_MEDIA_TYPE));
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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 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 * 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 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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BOOL CompareMediaTypes(const AM_MEDIA_TYPE * pmt1, const AM_MEDIA_TYPE * pmt2, BOOL bWildcards)
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{
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TRACE("pmt1: ");
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dump_AM_MEDIA_TYPE(pmt1);
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TRACE("pmt2: ");
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dump_AM_MEDIA_TYPE(pmt2);
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return (((bWildcards && (IsEqualGUID(&pmt1->majortype, &GUID_NULL) || IsEqualGUID(&pmt2->majortype, &GUID_NULL))) || IsEqualGUID(&pmt1->majortype, &pmt2->majortype)) &&
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((bWildcards && (IsEqualGUID(&pmt1->subtype, &GUID_NULL) || IsEqualGUID(&pmt2->subtype, &GUID_NULL))) || IsEqualGUID(&pmt1->subtype, &pmt2->subtype)));
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}
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void dump_AM_MEDIA_TYPE(const AM_MEDIA_TYPE * pmt)
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{
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if (!pmt)
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return;
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TRACE("\t%s\n\t%s\n\t...\n\t%s\n", qzdebugstr_guid(&pmt->majortype), qzdebugstr_guid(&pmt->subtype), qzdebugstr_guid(&pmt->formattype));
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}
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typedef struct IEnumMediaTypesImpl
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{
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const IEnumMediaTypesVtbl * lpVtbl;
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ULONG refCount;
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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 IEnumMediaTypesImpl_Construct(const ENUMMEDIADETAILS * pDetails, 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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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->enumMediaDetails.cMediaTypes = pDetails->cMediaTypes;
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pEnumMediaTypes->enumMediaDetails.pMediaTypes = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE) * pDetails->cMediaTypes);
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for (i = 0; i < pDetails->cMediaTypes; i++)
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if (FAILED(CopyMediaType(&pEnumMediaTypes->enumMediaDetails.pMediaTypes[i], &pDetails->pMediaTypes[i])))
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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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*ppEnum = (IEnumMediaTypes *)(&pEnumMediaTypes->lpVtbl);
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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", qzdebugstr_guid(riid), ppv);
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*ppv = NULL;
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if (IsEqualIID(riid, &IID_IUnknown))
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*ppv = (LPVOID)iface;
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else if (IsEqualIID(riid, &IID_IEnumMediaTypes))
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*ppv = (LPVOID)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", qzdebugstr_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 %ld\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 %ld\n", iface, refCount + 1);
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if (!refCount)
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{
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int 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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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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TRACE("(%lu, %p, %p)\n", cMediaTypes, ppMediaTypes, pcFetched);
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TRACE("Next uIndex: %lu, cFetched: %lu\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("(%lu)\n", cMediaTypes);
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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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IEnumMediaTypesImpl *This = (IEnumMediaTypesImpl *)iface;
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TRACE("()\n");
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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 = IEnumMediaTypesImpl_Construct(&This->enumMediaDetails, 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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