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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.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;
- }
- DECLARE_CREATE(libAVEnumPins, libAVEnumPins_Setup(this, pin, filter),
- libAVPin *pin, libAVFilter *filter)
- DECLARE_DESTROY(libAVEnumPins, nothing)
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