ffmpeg/libavcodec/error_resilience.h

   1 /*
   2  *
   3  * This file is part of FFmpeg.
   4  *
   5  * FFmpeg is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * FFmpeg is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with FFmpeg; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  18  */
  19
  20 #ifndef AVCODEC_ERROR_RESILIENCE_H
  21 #define AVCODEC_ERROR_RESILIENCE_H
  22
  23 #include <stdint.h>
  24
  25 #include "avcodec.h"
  26 #include "me_cmp.h"
  27 #include "thread.h"
  28
  29 ///< current MB is the first after a resync marker
  30 #define VP_START               1
  31 #define ER_AC_ERROR            2
  32 #define ER_DC_ERROR            4
  33 #define ER_MV_ERROR            8
  34 #define ER_AC_END              16
  35 #define ER_DC_END              32
  36 #define ER_MV_END              64
  37
  38 #define ER_MB_ERROR (ER_AC_ERROR|ER_DC_ERROR|ER_MV_ERROR)
  39 #define ER_MB_END   (ER_AC_END|ER_DC_END|ER_MV_END)
  40
  41 typedef struct ERPicture {
  42     AVFrame *f;
  43     ThreadFrame *tf;
  44
  45     // it's the caller's responsibility to allocate these buffers
  46     int16_t (*motion_val[2])[2];
  47     int8_t *ref_index[2];
  48
  49     uint32_t *mb_type;
  50     int field_picture;
  51 } ERPicture;
  52
  53 typedef struct ERContext {
  54     AVCodecContext *avctx;
  55     MECmpContext *mecc;
  56
  57     int *mb_index2xy;
  58     int mb_num;
  59     int mb_width, mb_height;
  60     int mb_stride;
  61     int b8_stride;
  62
  63     int error_count, error_occurred;
  64     uint8_t *error_status_table;
  65     uint8_t *er_temp_buffer;
  66     int16_t *dc_val[3];
  67     uint8_t *mbskip_table;
  68     uint8_t *mbintra_table;
  69     int mv[2][4][2];
  70
  71     ERPicture cur_pic;
  72     ERPicture last_pic;
  73     ERPicture next_pic;
  74
  75     AVBufferRef *ref_index_buf[2];
  76     AVBufferRef *motion_val_buf[2];
  77
  78     uint16_t pp_time;
  79     uint16_t pb_time;
  80     int quarter_sample;
  81     int partitioned_frame;
  82     int ref_count;
  83
  84     void (*decode_mb)(void *opaque, int ref, int mv_dir, int mv_type,
  85                       int (*mv)[2][4][2],
  86                       int mb_x, int mb_y, int mb_intra, int mb_skipped);
  87     void *opaque;
  88 } ERContext;
  89
  90 void ff_er_frame_start(ERContext *s);
  91 void ff_er_frame_end(ERContext *s);
  92 void ff_er_add_slice(ERContext *s, int startx, int starty, int endx, int endy,
  93                      int status);
  94
  95 #endif /* AVCODEC_ERROR_RESILIENCE_H */