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