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101 lines
3.4 KiB
101 lines
3.4 KiB
/* |
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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 "libavutil/mem.h" |
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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 WINAPI 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 WINAPI 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 WINAPI 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 WINAPI 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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