libavcodec/h264pred.h

   1 /*
   2  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
   3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * @file libavcodec/h264pred.h
  24  * H.264 / AVC / MPEG4 prediction functions.
  25  * @author Michael Niedermayer <michaelni@gmx.at>
  26  */
  27
  28 #ifndef AVCODEC_H264PRED_H
  29 #define AVCODEC_H264PRED_H
  30
  31 #include "libavutil/common.h"
  32 #include "dsputil.h"
  33
  34 /**
  35  * Prediction types
  36  */
  37 //@{
  38 #define VERT_PRED             0
  39 #define HOR_PRED              1
  40 #define DC_PRED               2
  41 #define DIAG_DOWN_LEFT_PRED   3
  42 #define DIAG_DOWN_RIGHT_PRED  4
  43 #define VERT_RIGHT_PRED       5
  44 #define HOR_DOWN_PRED         6
  45 #define VERT_LEFT_PRED        7
  46 #define HOR_UP_PRED           8
  47
  48 #define LEFT_DC_PRED          9
  49 #define TOP_DC_PRED           10
  50 #define DC_128_PRED           11
  51
  52 #define DIAG_DOWN_LEFT_PRED_RV40_NODOWN   12
  53 #define HOR_UP_PRED_RV40_NODOWN           13
  54 #define VERT_LEFT_PRED_RV40_NODOWN        14
  55
  56 #define DC_PRED8x8            0
  57 #define HOR_PRED8x8           1
  58 #define VERT_PRED8x8          2
  59 #define PLANE_PRED8x8         3
  60
  61 #define LEFT_DC_PRED8x8       4
  62 #define TOP_DC_PRED8x8        5
  63 #define DC_128_PRED8x8        6
  64
  65 #define ALZHEIMER_DC_L0T_PRED8x8 7
  66 #define ALZHEIMER_DC_0LT_PRED8x8 8
  67 #define ALZHEIMER_DC_L00_PRED8x8 9
  68 #define ALZHEIMER_DC_0L0_PRED8x8 10
  69 //@}
  70
  71 /**
  72  * Context for storing H.264 prediction functions
  73  */
  74 typedef struct H264PredContext{
  75     void (*pred4x4  [9+3+3])(uint8_t *src, uint8_t *topright, int stride);//FIXME move to dsp?
  76     void (*pred8x8l [9+3])(uint8_t *src, int topleft, int topright, int stride);
  77     void (*pred8x8  [4+3+4])(uint8_t *src, int stride);
  78     void (*pred16x16[4+3])(uint8_t *src, int stride);
  79
  80     void (*pred4x4_add  [2])(uint8_t *pix/*align  4*/, const DCTELEM *block/*align 16*/, int stride);
  81     void (*pred8x8l_add [2])(uint8_t *pix/*align  8*/, const DCTELEM *block/*align 16*/, int stride);
  82     void (*pred8x8_add  [3])(uint8_t *pix/*align  8*/, const int *block_offset, const DCTELEM *block/*align 16*/, int stride);
  83     void (*pred16x16_add[3])(uint8_t *pix/*align 16*/, const int *block_offset, const DCTELEM *block/*align 16*/, int stride);
  84 }H264PredContext;
  85
  86 void ff_h264_pred_init(H264PredContext *h, int codec_id);
  87
  88 #endif /* AVCODEC_H264PRED_H */