aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* 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(libAVEnumPins,
{ {&IID_IUnknown,0}, {&IID_IEnumPins,0} })
DECLARE_ADDREF(libAVEnumPins)
DECLARE_RELEASE(libAVEnumPins)
long WINAPI
libAVEnumPins_Next(libAVEnumPins *this, unsigned long n, IPin **pins,
unsigned long *fetched)
{
int count = 0;
dshowdebug("libAVEnumPins_Next(%p)\n", this);
if (!pins)
return E_POINTER;
if (!this->pos && n == 1) {
libAVPin_AddRef(this->pin);
*pins = (IPin *) this->pin;
count = 1;
this->pos = 1;
}
if (fetched)
*fetched = count;
if (!count)
return S_FALSE;
return S_OK;
}
long WINAPI
libAVEnumPins_Skip(libAVEnumPins *this, unsigned long n)
{
dshowdebug("libAVEnumPins_Skip(%p)\n", this);
if (n) /* Any skip will always fall outside of the only valid pin. */
return S_FALSE;
return S_OK;
}
long WINAPI
libAVEnumPins_Reset(libAVEnumPins *this)
{
dshowdebug("libAVEnumPins_Reset(%p)\n", this);
this->pos = 0;
return S_OK;
}
long WINAPI
libAVEnumPins_Clone(libAVEnumPins *this, libAVEnumPins **pins)
{
libAVEnumPins *new;
dshowdebug("libAVEnumPins_Clone(%p)\n", this);
if (!pins)
return E_POINTER;
new = libAVEnumPins_Create(this->pin, this->filter);
if (!new)
return E_OUTOFMEMORY;
new->pos = this->pos;
*pins = new;
return S_OK;
}
static int
libAVEnumPins_Setup(libAVEnumPins *this, libAVPin *pin, libAVFilter *filter)
{
IEnumPinsVtbl *vtbl = this->vtbl;
SETVTBL(vtbl, libAVEnumPins, QueryInterface);
SETVTBL(vtbl, libAVEnumPins, AddRef);
SETVTBL(vtbl, libAVEnumPins, Release);
SETVTBL(vtbl, libAVEnumPins, Next);
SETVTBL(vtbl, libAVEnumPins, Skip);
SETVTBL(vtbl, libAVEnumPins, Reset);
SETVTBL(vtbl, libAVEnumPins, Clone);
this->pin = pin;
this->filter = filter;
libAVFilter_AddRef(this->filter);
return 1;
}
static int
libAVEnumPins_Cleanup(libAVEnumPins *this)
{
libAVFilter_Release(this->filter);
return 1;
}
DECLARE_CREATE(libAVEnumPins, libAVEnumPins_Setup(this, pin, filter),
libAVPin *pin, libAVFilter *filter)
DECLARE_DESTROY(libAVEnumPins, libAVEnumPins_Cleanup)
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