yading@10: /*
yading@10:  * DirectShow capture interface
yading@10:  * Copyright (c) 2010 Ramiro Polla
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #include "dshow_capture.h"
yading@10: 
yading@10: DECLARE_QUERYINTERFACE(libAVEnumMediaTypes,
yading@10:     { {&IID_IUnknown,0}, {&IID_IEnumPins,0} })
yading@10: DECLARE_ADDREF(libAVEnumMediaTypes)
yading@10: DECLARE_RELEASE(libAVEnumMediaTypes)
yading@10: 
yading@10: long WINAPI
yading@10: libAVEnumMediaTypes_Next(libAVEnumMediaTypes *this, unsigned long n,
yading@10:                          AM_MEDIA_TYPE **types, unsigned long *fetched)
yading@10: {
yading@10:     int count = 0;
yading@10:     dshowdebug("libAVEnumMediaTypes_Next(%p)\n", this);
yading@10:     if (!types)
yading@10:         return E_POINTER;
yading@10:     if (!this->pos && n == 1) {
yading@10:         if (!IsEqualGUID(&this->type.majortype, &GUID_NULL)) {
yading@10:             AM_MEDIA_TYPE *type = av_malloc(sizeof(AM_MEDIA_TYPE));
yading@10:             ff_copy_dshow_media_type(type, &this->type);
yading@10:             *types = type;
yading@10:             count = 1;
yading@10:         }
yading@10:         this->pos = 1;
yading@10:     }
yading@10:     if (fetched)
yading@10:         *fetched = count;
yading@10:     if (!count)
yading@10:         return S_FALSE;
yading@10:     return S_OK;
yading@10: }
yading@10: long WINAPI
yading@10: libAVEnumMediaTypes_Skip(libAVEnumMediaTypes *this, unsigned long n)
yading@10: {
yading@10:     dshowdebug("libAVEnumMediaTypes_Skip(%p)\n", this);
yading@10:     if (n) /* Any skip will always fall outside of the only valid type. */
yading@10:         return S_FALSE;
yading@10:     return S_OK;
yading@10: }
yading@10: long WINAPI
yading@10: libAVEnumMediaTypes_Reset(libAVEnumMediaTypes *this)
yading@10: {
yading@10:     dshowdebug("libAVEnumMediaTypes_Reset(%p)\n", this);
yading@10:     this->pos = 0;
yading@10:     return S_OK;
yading@10: }
yading@10: long WINAPI
yading@10: libAVEnumMediaTypes_Clone(libAVEnumMediaTypes *this, libAVEnumMediaTypes **enums)
yading@10: {
yading@10:     libAVEnumMediaTypes *new;
yading@10:     dshowdebug("libAVEnumMediaTypes_Clone(%p)\n", this);
yading@10:     if (!enums)
yading@10:         return E_POINTER;
yading@10:     new = libAVEnumMediaTypes_Create(&this->type);
yading@10:     if (!new)
yading@10:         return E_OUTOFMEMORY;
yading@10:     new->pos = this->pos;
yading@10:     *enums = new;
yading@10:     return S_OK;
yading@10: }
yading@10: 
yading@10: static int
yading@10: libAVEnumMediaTypes_Setup(libAVEnumMediaTypes *this, const AM_MEDIA_TYPE *type)
yading@10: {
yading@10:     IEnumPinsVtbl *vtbl = this->vtbl;
yading@10:     SETVTBL(vtbl, libAVEnumMediaTypes, QueryInterface);
yading@10:     SETVTBL(vtbl, libAVEnumMediaTypes, AddRef);
yading@10:     SETVTBL(vtbl, libAVEnumMediaTypes, Release);
yading@10:     SETVTBL(vtbl, libAVEnumMediaTypes, Next);
yading@10:     SETVTBL(vtbl, libAVEnumMediaTypes, Skip);
yading@10:     SETVTBL(vtbl, libAVEnumMediaTypes, Reset);
yading@10:     SETVTBL(vtbl, libAVEnumMediaTypes, Clone);
yading@10: 
yading@10:     if (!type) {
yading@10:         this->type.majortype = GUID_NULL;
yading@10:     } else {
yading@10:         ff_copy_dshow_media_type(&this->type, type);
yading@10:     }
yading@10: 
yading@10:     return 1;
yading@10: }
yading@10: DECLARE_CREATE(libAVEnumMediaTypes, libAVEnumMediaTypes_Setup(this, type), const AM_MEDIA_TYPE *type)
yading@10: DECLARE_DESTROY(libAVEnumMediaTypes, nothing)