Libav 0.7.1
libavcodec/h264pred.h
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00001 /*
00002  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
00003  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
00004  *
00005  * This file is part of Libav.
00006  *
00007  * Libav is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * Libav is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with Libav; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00028 #ifndef AVCODEC_H264PRED_H
00029 #define AVCODEC_H264PRED_H
00030 
00031 #include "libavutil/common.h"
00032 #include "dsputil.h"
00033 
00038 #define VERT_PRED             0
00039 #define HOR_PRED              1
00040 #define DC_PRED               2
00041 #define DIAG_DOWN_LEFT_PRED   3
00042 #define DIAG_DOWN_RIGHT_PRED  4
00043 #define VERT_RIGHT_PRED       5
00044 #define HOR_DOWN_PRED         6
00045 #define VERT_LEFT_PRED        7
00046 #define HOR_UP_PRED           8
00047 
00048 // DC edge (not for VP8)
00049 #define LEFT_DC_PRED          9
00050 #define TOP_DC_PRED           10
00051 #define DC_128_PRED           11
00052 
00053 // RV40 specific
00054 #define DIAG_DOWN_LEFT_PRED_RV40_NODOWN   12
00055 #define HOR_UP_PRED_RV40_NODOWN           13
00056 #define VERT_LEFT_PRED_RV40_NODOWN        14
00057 
00058 // VP8 specific
00059 #define TM_VP8_PRED           9     ///< "True Motion", used instead of plane
00060 #define VERT_VP8_PRED         10    ///< for VP8, #VERT_PRED is the average of
00061 
00062 
00063 #define HOR_VP8_PRED          11    ///< unaveraged version of #HOR_PRED, see
00064 
00065 #define DC_127_PRED           12
00066 #define DC_129_PRED           13
00067 
00068 #define DC_PRED8x8            0
00069 #define HOR_PRED8x8           1
00070 #define VERT_PRED8x8          2
00071 #define PLANE_PRED8x8         3
00072 
00073 // DC edge
00074 #define LEFT_DC_PRED8x8       4
00075 #define TOP_DC_PRED8x8        5
00076 #define DC_128_PRED8x8        6
00077 
00078 // H264/SVQ3 (8x8) specific
00079 #define ALZHEIMER_DC_L0T_PRED8x8 7
00080 #define ALZHEIMER_DC_0LT_PRED8x8 8
00081 #define ALZHEIMER_DC_L00_PRED8x8 9
00082 #define ALZHEIMER_DC_0L0_PRED8x8 10
00083 
00084 // VP8 specific
00085 #define DC_127_PRED8x8        7
00086 #define DC_129_PRED8x8        8
00087 
00088 
00092 typedef struct H264PredContext{
00093     void (*pred4x4  [9+3+3])(uint8_t *src, const uint8_t *topright, int stride);//FIXME move to dsp?
00094     void (*pred8x8l [9+3])(uint8_t *src, int topleft, int topright, int stride);
00095     void (*pred8x8  [4+3+4])(uint8_t *src, int stride);
00096     void (*pred16x16[4+3+2])(uint8_t *src, int stride);
00097 
00098     void (*pred4x4_add  [2])(uint8_t *pix/*align  4*/, const DCTELEM *block/*align 16*/, int stride);
00099     void (*pred8x8l_add [2])(uint8_t *pix/*align  8*/, const DCTELEM *block/*align 16*/, int stride);
00100     void (*pred8x8_add  [3])(uint8_t *pix/*align  8*/, const int *block_offset, const DCTELEM *block/*align 16*/, int stride);
00101     void (*pred16x16_add[3])(uint8_t *pix/*align 16*/, const int *block_offset, const DCTELEM *block/*align 16*/, int stride);
00102 }H264PredContext;
00103 
00104 void ff_h264_pred_init(H264PredContext *h, int codec_id, const int bit_depth);
00105 void ff_h264_pred_init_arm(H264PredContext *h, int codec_id, const int bit_depth);
00106 void ff_h264_pred_init_x86(H264PredContext *h, int codec_id, const int bit_depth);
00107 
00108 #endif /* AVCODEC_H264PRED_H */