misc/winutils/include/libavcodec/vda.h
author Wuzzy <Wuzzy2@mail.ru>
Thu, 25 Apr 2019 23:01:05 +0200
changeset 14844 e239378a9400
parent 7813 7ac83d79b897
permissions -rw-r--r--
Prevent entering “/”, “\” and “:” in team and scheme names. The name of teams and schems is saved in the file name itself, so these characters would cause trouble as they are used in path names in Linux and Windows.

/*
 * 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 */