/*

 * The Video Decode and Presentation API for UNIX (VDPAU) is used for

 * hardware-accelerated decoding of MPEG-1/2, H.264 and VC-1.

 *

 * Copyright (C) 2008 NVIDIA

 *

 * This file is part of Libav.

 *

 * Libav 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.

 *

 * Libav 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 Libav; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */

#ifndef AVCODEC_VDPAU_H

#define AVCODEC_VDPAU_H

/**

 * @file

 * @ingroup lavc_codec_hwaccel_vdpau

 * Public libavcodec VDPAU header.

 */

/**

 * @defgroup lavc_codec_hwaccel_vdpau VDPAU Decoder and Renderer

 * @ingroup lavc_codec_hwaccel

 *

 * VDPAU hardware acceleration has two modules

 * - VDPAU decoding

 * - VDPAU presentation

 *

 * The VDPAU decoding module parses all headers using Libav

 * parsing mechanisms and uses VDPAU for the actual decoding.

 *

 * As per the current implementation, the actual decoding

 * and rendering (API calls) are done as part of the VDPAU

 * presentation (vo_vdpau.c) module.

 *

 * @{

 */

#include <vdpau/vdpau.h>

#include <vdpau/vdpau_x11.h>

/** @brief The videoSurface is used for rendering. */

#define FF_VDPAU_STATE_USED_FOR_RENDER 1

/**

 * @brief The videoSurface is needed for reference/prediction.

 * The codec manipulates this.

 */

#define FF_VDPAU_STATE_USED_FOR_REFERENCE 2

/**

 * @brief This structure is used as a callback between the Libav

 * decoder (vd_) and presentation (vo_) module.

 * This is used for defining a video frame containing surface,

 * picture parameter, bitstream information etc which are passed

 * between the Libav decoder and its clients.

 */

struct vdpau_render_state {

    VdpVideoSurface surface; ///< Used as rendered surface, never changed.

    int state; ///< Holds FF_VDPAU_STATE_* values.

    /** picture parameter information for all supported codecs */

    union VdpPictureInfo {

        VdpPictureInfoH264        h264;

        VdpPictureInfoMPEG1Or2    mpeg;

        VdpPictureInfoVC1          vc1;

        VdpPictureInfoMPEG4Part2 mpeg4;

    } info;

    /** Describe size/location of the compressed video data.

        Set to 0 when freeing bitstream_buffers. */

    int bitstream_buffers_allocated;

    int bitstream_buffers_used;

    /** The user is responsible for freeing this buffer using av_freep(). */

    VdpBitstreamBuffer *bitstream_buffers;

};

/* @}*/

#endif /* AVCODEC_VDPAU_H */