/*
  * 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)