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(libAVEnumPins,
yading@10:     { {&IID_IUnknown,0}, {&IID_IEnumPins,0} })
yading@10: DECLARE_ADDREF(libAVEnumPins)
yading@10: DECLARE_RELEASE(libAVEnumPins)
yading@10: 
yading@10: long WINAPI
yading@10: libAVEnumPins_Next(libAVEnumPins *this, unsigned long n, IPin **pins,
yading@10:                    unsigned long *fetched)
yading@10: {
yading@10:     int count = 0;
yading@10:     dshowdebug("libAVEnumPins_Next(%p)\n", this);
yading@10:     if (!pins)
yading@10:         return E_POINTER;
yading@10:     if (!this->pos && n == 1) {
yading@10:         libAVPin_AddRef(this->pin);
yading@10:         *pins = (IPin *) this->pin;
yading@10:         count = 1;
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: libAVEnumPins_Skip(libAVEnumPins *this, unsigned long n)
yading@10: {
yading@10:     dshowdebug("libAVEnumPins_Skip(%p)\n", this);
yading@10:     if (n) /* Any skip will always fall outside of the only valid pin. */
yading@10:         return S_FALSE;
yading@10:     return S_OK;
yading@10: }
yading@10: long WINAPI
yading@10: libAVEnumPins_Reset(libAVEnumPins *this)
yading@10: {
yading@10:     dshowdebug("libAVEnumPins_Reset(%p)\n", this);
yading@10:     this->pos = 0;
yading@10:     return S_OK;
yading@10: }
yading@10: long WINAPI
yading@10: libAVEnumPins_Clone(libAVEnumPins *this, libAVEnumPins **pins)
yading@10: {
yading@10:     libAVEnumPins *new;
yading@10:     dshowdebug("libAVEnumPins_Clone(%p)\n", this);
yading@10:     if (!pins)
yading@10:         return E_POINTER;
yading@10:     new = libAVEnumPins_Create(this->pin, this->filter);
yading@10:     if (!new)
yading@10:         return E_OUTOFMEMORY;
yading@10:     new->pos = this->pos;
yading@10:     *pins = new;
yading@10:     return S_OK;
yading@10: }
yading@10: 
yading@10: static int
yading@10: libAVEnumPins_Setup(libAVEnumPins *this, libAVPin *pin, libAVFilter *filter)
yading@10: {
yading@10:     IEnumPinsVtbl *vtbl = this->vtbl;
yading@10:     SETVTBL(vtbl, libAVEnumPins, QueryInterface);
yading@10:     SETVTBL(vtbl, libAVEnumPins, AddRef);
yading@10:     SETVTBL(vtbl, libAVEnumPins, Release);
yading@10:     SETVTBL(vtbl, libAVEnumPins, Next);
yading@10:     SETVTBL(vtbl, libAVEnumPins, Skip);
yading@10:     SETVTBL(vtbl, libAVEnumPins, Reset);
yading@10:     SETVTBL(vtbl, libAVEnumPins, Clone);
yading@10: 
yading@10:     this->pin = pin;
yading@10:     this->filter = filter;
yading@10:     libAVFilter_AddRef(this->filter);
yading@10: 
yading@10:     return 1;
yading@10: }
yading@10: static int
yading@10: libAVEnumPins_Cleanup(libAVEnumPins *this)
yading@10: {
yading@10:     libAVFilter_Release(this->filter);
yading@10:     return 1;
yading@10: }
yading@10: DECLARE_CREATE(libAVEnumPins, libAVEnumPins_Setup(this, pin, filter),
yading@10:                libAVPin *pin, libAVFilter *filter)
yading@10: DECLARE_DESTROY(libAVEnumPins, libAVEnumPins_Cleanup)