/*

 * VDA HW acceleration

 *

 * copyright (c) 2011 Sebastien Zwickert

 *

 * 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_VDA_H

#define AVCODEC_VDA_H

/**

 * @file

 * @ingroup lavc_codec_hwaccel_vda

 * Public libavcodec VDA header.

 */

#include "libavcodec/version.h"

#if FF_API_VDA_ASYNC

#include <pthread.h>

#endif

#include <stdint.h>

// emmintrin.h is unable to compile with -std=c99 -Werror=missing-prototypes

// http://openradar.appspot.com/8026390

#undef __GNUC_STDC_INLINE__

#define Picture QuickdrawPicture

#include <VideoDecodeAcceleration/VDADecoder.h>

#undef Picture

/**

 * @defgroup lavc_codec_hwaccel_vda VDA

 * @ingroup lavc_codec_hwaccel

 *

 * @{

 */

#if FF_API_VDA_ASYNC

/**

 * This structure is used to store decoded frame information and data.

 *

 * @deprecated Use synchronous decoding mode.

 */

typedef struct vda_frame {

    /**

     * The PTS of the frame.

     *

     * - encoding: unused

     * - decoding: Set/Unset by libavcodec.

     */

    int64_t             pts;

    /**

     * The CoreVideo buffer that contains the decoded data.

     *

     * - encoding: unused

     * - decoding: Set/Unset by libavcodec.

     */

    CVPixelBufferRef    cv_buffer;

    /**

     * A pointer to the next frame.

     *

     * - encoding: unused

     * - decoding: Set/Unset by libavcodec.

     */

    struct vda_frame    *next_frame;

} vda_frame;

#endif

/**

 * This structure is used to provide the necessary configurations and data

 * to the VDA Libav HWAccel implementation.

 *

 * The application must make it available as AVCodecContext.hwaccel_context.

 */

struct vda_context {

    /**

     * VDA decoder object.

     *

     * - encoding: unused

     * - decoding: Set/Unset by libavcodec.

     */

    VDADecoder          decoder;

    /**

     * The Core Video pixel buffer that contains the current image data.

     *

     * encoding: unused

     * decoding: Set by libavcodec. Unset by user.

     */

    CVPixelBufferRef    cv_buffer;

    /**

     * Use the hardware decoder in synchronous mode.

     *

     * encoding: unused

     * decoding: Set by user.

     */

    int                 use_sync_decoding;

#if FF_API_VDA_ASYNC

    /**

     * VDA frames queue ordered by presentation timestamp.

     *

     * @deprecated Use synchronous decoding mode.

     *

     * - encoding: unused

     * - decoding: Set/Unset by libavcodec.

     */

    vda_frame           *queue;

    /**

     * Mutex for locking queue operations.

     *

     * @deprecated Use synchronous decoding mode.

     *

     * - encoding: unused

     * - decoding: Set/Unset by libavcodec.

     */

    pthread_mutex_t     queue_mutex;

#endif

    /**

     * The frame width.

     *

     * - encoding: unused

     * - decoding: Set/Unset by user.

     */

    int                 width;

    /**

     * The frame height.

     *

     * - encoding: unused

     * - decoding: Set/Unset by user.

     */

    int                 height;

    /**

     * The frame format.

     *

     * - encoding: unused

     * - decoding: Set/Unset by user.

     */

    int                 format;

    /**

     * The pixel format for output image buffers.

     *

     * - encoding: unused

     * - decoding: Set/Unset by user.

     */

    OSType              cv_pix_fmt_type;

    /**

     * The current bitstream buffer.

     */

    uint8_t             *priv_bitstream;

    /**

     * The current size of the bitstream.

     */

    int                 priv_bitstream_size;

    /**

     * The reference size used for fast reallocation.

     */

    int                 priv_allocated_size;

};

/** Create the video decoder. */

int ff_vda_create_decoder(struct vda_context *vda_ctx,

                          uint8_t *extradata,

                          int extradata_size);

/** Destroy the video decoder. */

int ff_vda_destroy_decoder(struct vda_context *vda_ctx);

#if FF_API_VDA_ASYNC

/**

 * Return the top frame of the queue.

 *

 * @deprecated Use synchronous decoding mode.

 */

vda_frame *ff_vda_queue_pop(struct vda_context *vda_ctx);

/**

 * Release the given frame.

 *

 * @deprecated Use synchronous decoding mode.

 */

void ff_vda_release_vda_frame(vda_frame *frame);

#endif

/**

 * @}

 */

#endif /* AVCODEC_VDA_H */