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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(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;

}

static int

libAVFilter_Cleanup(libAVFilter *this)

{

    libAVPin_Release(this->pin);

    return 1;

}

DECLARE_CREATE(libAVFilter, libAVFilter_Setup(this, priv_data, callback, type),

               void *priv_data, void *callback, enum dshowDeviceType type)

DECLARE_DESTROY(libAVFilter, libAVFilter_Cleanup)