mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-23 19:30:05 +00:00
106 lines
3.0 KiB
C
106 lines
3.0 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(libAVEnumPins,
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{ {&IID_IUnknown,0}, {&IID_IEnumPins,0} })
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DECLARE_ADDREF(libAVEnumPins)
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DECLARE_RELEASE(libAVEnumPins)
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long WINAPI
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libAVEnumPins_Next(libAVEnumPins *this, unsigned long n, IPin **pins,
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unsigned long *fetched)
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{
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int count = 0;
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dshowdebug("libAVEnumPins_Next(%p)\n", this);
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if (!pins)
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return E_POINTER;
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if (!this->pos && n == 1) {
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libAVPin_AddRef(this->pin);
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*pins = (IPin *) this->pin;
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count = 1;
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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
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libAVEnumPins_Skip(libAVEnumPins *this, unsigned long n)
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{
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dshowdebug("libAVEnumPins_Skip(%p)\n", this);
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if (n) /* Any skip will always fall outside of the only valid pin. */
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return S_FALSE;
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return S_OK;
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}
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long WINAPI
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libAVEnumPins_Reset(libAVEnumPins *this)
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{
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dshowdebug("libAVEnumPins_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
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libAVEnumPins_Clone(libAVEnumPins *this, libAVEnumPins **pins)
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{
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libAVEnumPins *new;
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dshowdebug("libAVEnumPins_Clone(%p)\n", this);
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if (!pins)
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return E_POINTER;
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new = libAVEnumPins_Create(this->pin, this->filter);
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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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*pins = new;
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return S_OK;
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}
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static int
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libAVEnumPins_Setup(libAVEnumPins *this, libAVPin *pin, libAVFilter *filter)
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{
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IEnumPinsVtbl *vtbl = this->vtbl;
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SETVTBL(vtbl, libAVEnumPins, QueryInterface);
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SETVTBL(vtbl, libAVEnumPins, AddRef);
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SETVTBL(vtbl, libAVEnumPins, Release);
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SETVTBL(vtbl, libAVEnumPins, Next);
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SETVTBL(vtbl, libAVEnumPins, Skip);
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SETVTBL(vtbl, libAVEnumPins, Reset);
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SETVTBL(vtbl, libAVEnumPins, Clone);
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this->pin = pin;
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this->filter = filter;
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libAVFilter_AddRef(this->filter);
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return 1;
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}
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static int
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libAVEnumPins_Cleanup(libAVEnumPins *this)
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{
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libAVFilter_Release(this->filter);
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return 1;
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}
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DECLARE_CREATE(libAVEnumPins, libAVEnumPins_Setup(this, pin, filter),
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libAVPin *pin, libAVFilter *filter)
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DECLARE_DESTROY(libAVEnumPins, libAVEnumPins_Cleanup)
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