mirror of
https://github.com/FFmpeg/FFmpeg.git
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101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
/*
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* DirectShow capture interface
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* Copyright (c) 2010 Ramiro Polla
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "dshow_capture.h"
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DECLARE_QUERYINTERFACE(enummediatypes, DShowEnumMediaTypes,
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{ {&IID_IUnknown,0}, {&IID_IEnumMediaTypes,0} })
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DECLARE_ADDREF(enummediatypes, DShowEnumMediaTypes)
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DECLARE_RELEASE(enummediatypes, DShowEnumMediaTypes)
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long ff_dshow_enummediatypes_Next(DShowEnumMediaTypes *this, unsigned long n,
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AM_MEDIA_TYPE **types, unsigned long *fetched)
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{
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int count = 0;
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dshowdebug("ff_dshow_enummediatypes_Next(%p)\n", this);
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if (!types)
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return E_POINTER;
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if (!this->pos && n == 1) {
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if (!IsEqualGUID(&this->type.majortype, &GUID_NULL)) {
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AM_MEDIA_TYPE *type = av_malloc(sizeof(AM_MEDIA_TYPE));
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if (!type)
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return E_OUTOFMEMORY;
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ff_copy_dshow_media_type(type, &this->type);
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*types = type;
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count = 1;
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}
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this->pos = 1;
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}
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if (fetched)
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*fetched = count;
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if (!count)
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return S_FALSE;
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return S_OK;
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}
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long ff_dshow_enummediatypes_Skip(DShowEnumMediaTypes *this, unsigned long n)
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{
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dshowdebug("ff_dshow_enummediatypes_Skip(%p)\n", this);
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if (n) /* Any skip will always fall outside of the only valid type. */
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return S_FALSE;
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return S_OK;
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}
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long ff_dshow_enummediatypes_Reset(DShowEnumMediaTypes *this)
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{
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dshowdebug("ff_dshow_enummediatypes_Reset(%p)\n", this);
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this->pos = 0;
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return S_OK;
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}
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long ff_dshow_enummediatypes_Clone(DShowEnumMediaTypes *this, DShowEnumMediaTypes **enums)
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{
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DShowEnumMediaTypes *new;
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dshowdebug("ff_dshow_enummediatypes_Clone(%p)\n", this);
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if (!enums)
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return E_POINTER;
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new = ff_dshow_enummediatypes_Create(&this->type);
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if (!new)
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return E_OUTOFMEMORY;
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new->pos = this->pos;
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*enums = new;
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return S_OK;
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}
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static int ff_dshow_enummediatypes_Setup(DShowEnumMediaTypes *this, const AM_MEDIA_TYPE *type)
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{
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IEnumMediaTypesVtbl *vtbl = this->vtbl;
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SETVTBL(vtbl, enummediatypes, QueryInterface);
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SETVTBL(vtbl, enummediatypes, AddRef);
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SETVTBL(vtbl, enummediatypes, Release);
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SETVTBL(vtbl, enummediatypes, Next);
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SETVTBL(vtbl, enummediatypes, Skip);
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SETVTBL(vtbl, enummediatypes, Reset);
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SETVTBL(vtbl, enummediatypes, Clone);
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if (!type) {
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this->type.majortype = GUID_NULL;
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} else {
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ff_copy_dshow_media_type(&this->type, type);
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}
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return 1;
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}
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DECLARE_CREATE(enummediatypes, DShowEnumMediaTypes, ff_dshow_enummediatypes_Setup(this, type), const AM_MEDIA_TYPE *type)
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DECLARE_DESTROY(enummediatypes, DShowEnumMediaTypes, nothing)
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