/*
  * 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
  */
 
 /**

  * @file

  * common internal api header.
  */
 
 #ifndef AVCODEC_INTERNAL_H
 #define AVCODEC_INTERNAL_H
 

 #include <stdint.h>

 
 #include "libavutil/pixfmt.h"

 #include "avcodec.h"
 

 typedef struct InternalBuffer {
     int last_pic_num;

     uint8_t *base[AV_NUM_DATA_POINTERS];
     uint8_t *data[AV_NUM_DATA_POINTERS];
     int linesize[AV_NUM_DATA_POINTERS];

     int width;
     int height;
     enum PixelFormat pix_fmt;

     uint8_t **extended_data;
     int audio_data_size;
     int nb_channels;

 } InternalBuffer;
 
 typedef struct AVCodecInternal {
     /**
      * internal buffer count
      * used by default get/release/reget_buffer().
      */
     int buffer_count;
 
     /**
      * internal buffers
      * used by default get/release/reget_buffer().
      */
     InternalBuffer *buffer;
 
     /**
      * Whether the parent AVCodecContext is a copy of the context which had
      * init() called on it.
      * This is used by multithreading - shared tables and picture pointers
      * should be freed from the original context only.
      */
     int is_copy;
 } AVCodecInternal;
 

 struct AVCodecDefault {
     const uint8_t *key;
     const uint8_t *value;
 };
 

 /**

  * Determine whether pix_fmt is a hardware accelerated format.

  */
 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt);
 
 /**

  * Return the hardware accelerated codec for codec codec_id and

  * pixel format pix_fmt.

  *
  * @param codec_id the codec to match
  * @param pix_fmt the pixel format to match
  * @return the hardware accelerated codec, or NULL if none was found.
  */
 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt);
 

 /**
  * Return the index into tab at which {a,b} match elements {[0],[1]} of tab.
  * If there is no such matching pair then size is returned.
  */

 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b);
 

 unsigned int avpriv_toupper4(unsigned int x);

 /**
  * does needed setup of pkt_pts/pos and such for (re)get_buffer();
  */
 void ff_init_buffer_info(AVCodecContext *s, AVFrame *pic);
 

 int avpriv_lock_avformat(void);
 int avpriv_unlock_avformat(void);
 

 #endif /* AVCODEC_INTERNAL_H */