/*
  * 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(libAVFilter,
     { {&IID_IUnknown,0}, {&IID_IBaseFilter,0} })
 DECLARE_ADDREF(libAVFilter)
 DECLARE_RELEASE(libAVFilter)
 
 long WINAPI
 libAVFilter_GetClassID(libAVFilter *this, CLSID *id)
 {
     dshowdebug("libAVFilter_GetClassID(%p)\n", this);
     /* I'm not creating a ClassID just for this. */
     return E_FAIL;
 }
 long WINAPI
 libAVFilter_Stop(libAVFilter *this)
 {
     dshowdebug("libAVFilter_Stop(%p)\n", this);
     this->state = State_Stopped;
     return S_OK;
 }
 long WINAPI
 libAVFilter_Pause(libAVFilter *this)
 {
     dshowdebug("libAVFilter_Pause(%p)\n", this);
     this->state = State_Paused;
     return S_OK;
 }
 long WINAPI
 libAVFilter_Run(libAVFilter *this, REFERENCE_TIME start)
 {
     dshowdebug("libAVFilter_Run(%p) %"PRId64"\n", this, start);
     this->state = State_Running;
     this->start_time = start;
     return S_OK;
 }
 long WINAPI
 libAVFilter_GetState(libAVFilter *this, DWORD ms, FILTER_STATE *state)
 {
     dshowdebug("libAVFilter_GetState(%p)\n", this);
     if (!state)
         return E_POINTER;
     *state = this->state;
     return S_OK;
 }
 long WINAPI
 libAVFilter_SetSyncSource(libAVFilter *this, IReferenceClock *clock)
 {
     dshowdebug("libAVFilter_SetSyncSource(%p)\n", this);
 
     if (this->clock != clock) {
         if (this->clock)
             IReferenceClock_Release(this->clock);
         this->clock = clock;
         if (clock)
             IReferenceClock_AddRef(clock);
     }
 
     return S_OK;
 }
 long WINAPI
 libAVFilter_GetSyncSource(libAVFilter *this, IReferenceClock **clock)
 {
     dshowdebug("libAVFilter_GetSyncSource(%p)\n", this);
 
     if (!clock)
         return E_POINTER;
     if (this->clock)
         IReferenceClock_AddRef(this->clock);
     *clock = this->clock;
 
     return S_OK;
 }
 long WINAPI
 libAVFilter_EnumPins(libAVFilter *this, IEnumPins **enumpin)
 {
     libAVEnumPins *new;
     dshowdebug("libAVFilter_EnumPins(%p)\n", this);
 
     if (!enumpin)
         return E_POINTER;
     new = libAVEnumPins_Create(this->pin, this);
     if (!new)
         return E_OUTOFMEMORY;
 
     *enumpin = (IEnumPins *) new;
     return S_OK;
 }
 long WINAPI
 libAVFilter_FindPin(libAVFilter *this, const wchar_t *id, IPin **pin)
 {
     libAVPin *found = NULL;
     dshowdebug("libAVFilter_FindPin(%p)\n", this);
 
     if (!id || !pin)
         return E_POINTER;
     if (!wcscmp(id, L"In")) {
         found = this->pin;
         libAVPin_AddRef(found);
     }
     *pin = (IPin *) found;
     if (!found)
         return VFW_E_NOT_FOUND;
 
     return S_OK;
 }
 long WINAPI
 libAVFilter_QueryFilterInfo(libAVFilter *this, FILTER_INFO *info)
 {
     dshowdebug("libAVFilter_QueryFilterInfo(%p)\n", this);
 
     if (!info)
         return E_POINTER;
     if (this->info.pGraph)
         IFilterGraph_AddRef(this->info.pGraph);
     *info = this->info;
 
     return S_OK;
 }
 long WINAPI
 libAVFilter_JoinFilterGraph(libAVFilter *this, IFilterGraph *graph,
                             const wchar_t *name)
 {
     dshowdebug("libAVFilter_JoinFilterGraph(%p)\n", this);
 
     this->info.pGraph = graph;
     if (name)
         wcscpy(this->info.achName, name);
 
     return S_OK;
 }
 long WINAPI
 libAVFilter_QueryVendorInfo(libAVFilter *this, wchar_t **info)
 {
     dshowdebug("libAVFilter_QueryVendorInfo(%p)\n", this);
 
     if (!info)
         return E_POINTER;
     *info = wcsdup(L"libAV");
 
     return S_OK;
 }
 
 static int
 libAVFilter_Setup(libAVFilter *this, void *priv_data, void *callback,
                   enum dshowDeviceType type)
 {
     IBaseFilterVtbl *vtbl = this->vtbl;
     SETVTBL(vtbl, libAVFilter, QueryInterface);
     SETVTBL(vtbl, libAVFilter, AddRef);
     SETVTBL(vtbl, libAVFilter, Release);
     SETVTBL(vtbl, libAVFilter, GetClassID);
     SETVTBL(vtbl, libAVFilter, Stop);
     SETVTBL(vtbl, libAVFilter, Pause);
     SETVTBL(vtbl, libAVFilter, Run);
     SETVTBL(vtbl, libAVFilter, GetState);
     SETVTBL(vtbl, libAVFilter, SetSyncSource);
     SETVTBL(vtbl, libAVFilter, GetSyncSource);
     SETVTBL(vtbl, libAVFilter, EnumPins);
     SETVTBL(vtbl, libAVFilter, FindPin);
     SETVTBL(vtbl, libAVFilter, QueryFilterInfo);
     SETVTBL(vtbl, libAVFilter, JoinFilterGraph);
     SETVTBL(vtbl, libAVFilter, QueryVendorInfo);
 
     this->pin = libAVPin_Create(this);
 
     this->priv_data = priv_data;
     this->callback  = callback;
     this->type      = type;
 
     return 1;
 }
 DECLARE_CREATE(libAVFilter, libAVFilter_Setup(this, priv_data, callback, type),
                void *priv_data, void *callback, enum dshowDeviceType type)
 DECLARE_DESTROY(libAVFilter, nothing)