FFmpeg: libavcodec/h264data.h Source File

00001 /*
00002  * H26L/H264/AVC/JVT/14496-10/... encoder/decoder
00003  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg 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  * FFmpeg 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 FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00029 #ifndef AVCODEC_H264DATA_H
00030 #define AVCODEC_H264DATA_H
00031 
00032 #include <stdint.h>
00033 
00034 #include "libavutil/rational.h"
00035 #include "mpegvideo.h"
00036 #include "h264.h"
00037 
00038 static const uint8_t golomb_to_pict_type[5] = {
00039     AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, AV_PICTURE_TYPE_I,
00040     AV_PICTURE_TYPE_SP, AV_PICTURE_TYPE_SI
00041 };
00042 
00043 static const uint8_t golomb_to_intra4x4_cbp[48] = {
00044     47, 31, 15, 0,  23, 27, 29, 30, 7,  11, 13, 14, 39, 43, 45, 46,
00045     16, 3,  5,  10, 12, 19, 21, 26, 28, 35, 37, 42, 44, 1,  2,  4,
00046     8,  17, 18, 20, 24, 6,  9,  22, 25, 32, 33, 34, 36, 40, 38, 41
00047 };
00048 
00049 static const uint8_t golomb_to_inter_cbp[48] = {
00050     0,  16, 1,  2,  4,  8,  32, 3,  5,  10, 12, 15, 47, 7,  11, 13,
00051     14, 6,  9,  31, 35, 37, 42, 44, 33, 34, 36, 40, 39, 43, 45, 46,
00052     17, 18, 20, 24, 19, 21, 26, 28, 23, 27, 29, 30, 22, 25, 38, 41
00053 };
00054 
00055 static const uint8_t zigzag_scan[16+1] = {
00056     0 + 0 * 4, 1 + 0 * 4, 0 + 1 * 4, 0 + 2 * 4,
00057     1 + 1 * 4, 2 + 0 * 4, 3 + 0 * 4, 2 + 1 * 4,
00058     1 + 2 * 4, 0 + 3 * 4, 1 + 3 * 4, 2 + 2 * 4,
00059     3 + 1 * 4, 3 + 2 * 4, 2 + 3 * 4, 3 + 3 * 4,
00060 };
00061 
00062 static const uint8_t field_scan[16+1] = {
00063     0 + 0 * 4, 0 + 1 * 4, 1 + 0 * 4, 0 + 2 * 4,
00064     0 + 3 * 4, 1 + 1 * 4, 1 + 2 * 4, 1 + 3 * 4,
00065     2 + 0 * 4, 2 + 1 * 4, 2 + 2 * 4, 2 + 3 * 4,
00066     3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4,
00067 };
00068 
00069 static const uint8_t luma_dc_zigzag_scan[16] = {
00070     0 * 16 + 0 * 64, 1 * 16 + 0 * 64, 2 * 16 + 0 * 64, 0 * 16 + 2 * 64,
00071     3 * 16 + 0 * 64, 0 * 16 + 1 * 64, 1 * 16 + 1 * 64, 2 * 16 + 1 * 64,
00072     1 * 16 + 2 * 64, 2 * 16 + 2 * 64, 3 * 16 + 2 * 64, 0 * 16 + 3 * 64,
00073     3 * 16 + 1 * 64, 1 * 16 + 3 * 64, 2 * 16 + 3 * 64, 3 * 16 + 3 * 64,
00074 };
00075 
00076 static const uint8_t luma_dc_field_scan[16] = {
00077     0 * 16 + 0 * 64, 2 * 16 + 0 * 64, 1 * 16 + 0 * 64, 0 * 16 + 2 * 64,
00078     2 * 16 + 2 * 64, 3 * 16 + 0 * 64, 1 * 16 + 2 * 64, 3 * 16 + 2 * 64,
00079     0 * 16 + 1 * 64, 2 * 16 + 1 * 64, 0 * 16 + 3 * 64, 2 * 16 + 3 * 64,
00080     1 * 16 + 1 * 64, 3 * 16 + 1 * 64, 1 * 16 + 3 * 64, 3 * 16 + 3 * 64,
00081 };
00082 
00083 static const uint8_t chroma_dc_scan[4] = {
00084     (0 + 0 * 2) * 16, (1 + 0 * 2) * 16,
00085     (0 + 1 * 2) * 16, (1 + 1 * 2) * 16,
00086 };
00087 
00088 static const uint8_t chroma422_dc_scan[8] = {
00089     (0 + 0 * 2) * 16, (0 + 1 * 2) * 16,
00090     (1 + 0 * 2) * 16, (0 + 2 * 2) * 16,
00091     (0 + 3 * 2) * 16, (1 + 1 * 2) * 16,
00092     (1 + 2 * 2) * 16, (1 + 3 * 2) * 16,
00093 };
00094 
00095 // zigzag_scan8x8_cavlc[i] = zigzag_scan8x8[(i/4) + 16*(i%4)]
00096 static const uint8_t zigzag_scan8x8_cavlc[64+1] = {
00097     0 + 0 * 8, 1 + 1 * 8, 1 + 2 * 8, 2 + 2 * 8,
00098     4 + 1 * 8, 0 + 5 * 8, 3 + 3 * 8, 7 + 0 * 8,
00099     3 + 4 * 8, 1 + 7 * 8, 5 + 3 * 8, 6 + 3 * 8,
00100     2 + 7 * 8, 6 + 4 * 8, 5 + 6 * 8, 7 + 5 * 8,
00101     1 + 0 * 8, 2 + 0 * 8, 0 + 3 * 8, 3 + 1 * 8,
00102     3 + 2 * 8, 0 + 6 * 8, 4 + 2 * 8, 6 + 1 * 8,
00103     2 + 5 * 8, 2 + 6 * 8, 6 + 2 * 8, 5 + 4 * 8,
00104     3 + 7 * 8, 7 + 3 * 8, 4 + 7 * 8, 7 + 6 * 8,
00105     0 + 1 * 8, 3 + 0 * 8, 0 + 4 * 8, 4 + 0 * 8,
00106     2 + 3 * 8, 1 + 5 * 8, 5 + 1 * 8, 5 + 2 * 8,
00107     1 + 6 * 8, 3 + 5 * 8, 7 + 1 * 8, 4 + 5 * 8,
00108     4 + 6 * 8, 7 + 4 * 8, 5 + 7 * 8, 6 + 7 * 8,
00109     0 + 2 * 8, 2 + 1 * 8, 1 + 3 * 8, 5 + 0 * 8,
00110     1 + 4 * 8, 2 + 4 * 8, 6 + 0 * 8, 4 + 3 * 8,
00111     0 + 7 * 8, 4 + 4 * 8, 7 + 2 * 8, 3 + 6 * 8,
00112     5 + 5 * 8, 6 + 5 * 8, 6 + 6 * 8, 7 + 7 * 8,
00113 };
00114 
00115 static const uint8_t field_scan8x8[64+1] = {
00116     0 + 0 * 8, 0 + 1 * 8, 0 + 2 * 8, 1 + 0 * 8,
00117     1 + 1 * 8, 0 + 3 * 8, 0 + 4 * 8, 1 + 2 * 8,
00118     2 + 0 * 8, 1 + 3 * 8, 0 + 5 * 8, 0 + 6 * 8,
00119     0 + 7 * 8, 1 + 4 * 8, 2 + 1 * 8, 3 + 0 * 8,
00120     2 + 2 * 8, 1 + 5 * 8, 1 + 6 * 8, 1 + 7 * 8,
00121     2 + 3 * 8, 3 + 1 * 8, 4 + 0 * 8, 3 + 2 * 8,
00122     2 + 4 * 8, 2 + 5 * 8, 2 + 6 * 8, 2 + 7 * 8,
00123     3 + 3 * 8, 4 + 1 * 8, 5 + 0 * 8, 4 + 2 * 8,
00124     3 + 4 * 8, 3 + 5 * 8, 3 + 6 * 8, 3 + 7 * 8,
00125     4 + 3 * 8, 5 + 1 * 8, 6 + 0 * 8, 5 + 2 * 8,
00126     4 + 4 * 8, 4 + 5 * 8, 4 + 6 * 8, 4 + 7 * 8,
00127     5 + 3 * 8, 6 + 1 * 8, 6 + 2 * 8, 5 + 4 * 8,
00128     5 + 5 * 8, 5 + 6 * 8, 5 + 7 * 8, 6 + 3 * 8,
00129     7 + 0 * 8, 7 + 1 * 8, 6 + 4 * 8, 6 + 5 * 8,
00130     6 + 6 * 8, 6 + 7 * 8, 7 + 2 * 8, 7 + 3 * 8,
00131     7 + 4 * 8, 7 + 5 * 8, 7 + 6 * 8, 7 + 7 * 8,
00132 };
00133 
00134 static const uint8_t field_scan8x8_cavlc[64+1] = {
00135     0 + 0 * 8, 1 + 1 * 8, 2 + 0 * 8, 0 + 7 * 8,
00136     2 + 2 * 8, 2 + 3 * 8, 2 + 4 * 8, 3 + 3 * 8,
00137     3 + 4 * 8, 4 + 3 * 8, 4 + 4 * 8, 5 + 3 * 8,
00138     5 + 5 * 8, 7 + 0 * 8, 6 + 6 * 8, 7 + 4 * 8,
00139     0 + 1 * 8, 0 + 3 * 8, 1 + 3 * 8, 1 + 4 * 8,
00140     1 + 5 * 8, 3 + 1 * 8, 2 + 5 * 8, 4 + 1 * 8,
00141     3 + 5 * 8, 5 + 1 * 8, 4 + 5 * 8, 6 + 1 * 8,
00142     5 + 6 * 8, 7 + 1 * 8, 6 + 7 * 8, 7 + 5 * 8,
00143     0 + 2 * 8, 0 + 4 * 8, 0 + 5 * 8, 2 + 1 * 8,
00144     1 + 6 * 8, 4 + 0 * 8, 2 + 6 * 8, 5 + 0 * 8,
00145     3 + 6 * 8, 6 + 0 * 8, 4 + 6 * 8, 6 + 2 * 8,
00146     5 + 7 * 8, 6 + 4 * 8, 7 + 2 * 8, 7 + 6 * 8,
00147     1 + 0 * 8, 1 + 2 * 8, 0 + 6 * 8, 3 + 0 * 8,
00148     1 + 7 * 8, 3 + 2 * 8, 2 + 7 * 8, 4 + 2 * 8,
00149     3 + 7 * 8, 5 + 2 * 8, 4 + 7 * 8, 5 + 4 * 8,
00150     6 + 3 * 8, 6 + 5 * 8, 7 + 3 * 8, 7 + 7 * 8,
00151 };
00152 
00153 typedef struct IMbInfo {
00154     uint16_t type;
00155     uint8_t pred_mode;
00156     uint8_t cbp;
00157 } IMbInfo;
00158 
00159 static const IMbInfo i_mb_type_info[26] = {
00160     { MB_TYPE_INTRA4x4,  -1,  -1 },
00161     { MB_TYPE_INTRA16x16, 2,   0 },
00162     { MB_TYPE_INTRA16x16, 1,   0 },
00163     { MB_TYPE_INTRA16x16, 0,   0 },
00164     { MB_TYPE_INTRA16x16, 3,   0 },
00165     { MB_TYPE_INTRA16x16, 2,  16 },
00166     { MB_TYPE_INTRA16x16, 1,  16 },
00167     { MB_TYPE_INTRA16x16, 0,  16 },
00168     { MB_TYPE_INTRA16x16, 3,  16 },
00169     { MB_TYPE_INTRA16x16, 2,  32 },
00170     { MB_TYPE_INTRA16x16, 1,  32 },
00171     { MB_TYPE_INTRA16x16, 0,  32 },
00172     { MB_TYPE_INTRA16x16, 3,  32 },
00173     { MB_TYPE_INTRA16x16, 2,  15 +  0 },
00174     { MB_TYPE_INTRA16x16, 1,  15 +  0 },
00175     { MB_TYPE_INTRA16x16, 0,  15 +  0 },
00176     { MB_TYPE_INTRA16x16, 3,  15 +  0 },
00177     { MB_TYPE_INTRA16x16, 2,  15 + 16 },
00178     { MB_TYPE_INTRA16x16, 1,  15 + 16 },
00179     { MB_TYPE_INTRA16x16, 0,  15 + 16 },
00180     { MB_TYPE_INTRA16x16, 3,  15 + 16 },
00181     { MB_TYPE_INTRA16x16, 2,  15 + 32 },
00182     { MB_TYPE_INTRA16x16, 1,  15 + 32 },
00183     { MB_TYPE_INTRA16x16, 0,  15 + 32 },
00184     { MB_TYPE_INTRA16x16, 3,  15 + 32 },
00185     { MB_TYPE_INTRA_PCM,  -1, -1 },
00186 };
00187 
00188 typedef struct PMbInfo {
00189     uint16_t type;
00190     uint8_t partition_count;
00191 } PMbInfo;
00192 
00193 static const PMbInfo p_mb_type_info[5] = {
00194     { MB_TYPE_16x16 | MB_TYPE_P0L0,                               1 },
00195     { MB_TYPE_16x8  | MB_TYPE_P0L0 | MB_TYPE_P1L0,                2 },
00196     { MB_TYPE_8x16  | MB_TYPE_P0L0 | MB_TYPE_P1L0,                2 },
00197     { MB_TYPE_8x8   | MB_TYPE_P0L0 | MB_TYPE_P1L0,                4 },
00198     { MB_TYPE_8x8   | MB_TYPE_P0L0 | MB_TYPE_P1L0 | MB_TYPE_REF0, 4 },
00199 };
00200 
00201 static const PMbInfo p_sub_mb_type_info[4] = {
00202     { MB_TYPE_16x16 | MB_TYPE_P0L0, 1 },
00203     { MB_TYPE_16x8  | MB_TYPE_P0L0, 2 },
00204     { MB_TYPE_8x16  | MB_TYPE_P0L0, 2 },
00205     { MB_TYPE_8x8   | MB_TYPE_P0L0, 4 },
00206 };
00207 
00208 static const PMbInfo b_mb_type_info[23] = {
00209     { MB_TYPE_DIRECT2 | MB_TYPE_L0L1,                                              1, },
00210     { MB_TYPE_16x16   | MB_TYPE_P0L0,                                              1, },
00211     { MB_TYPE_16x16   | MB_TYPE_P0L1,                                              1, },
00212     { MB_TYPE_16x16   | MB_TYPE_P0L0 | MB_TYPE_P0L1,                               1, },
00213     { MB_TYPE_16x8    | MB_TYPE_P0L0 | MB_TYPE_P1L0,                               2, },
00214     { MB_TYPE_8x16    | MB_TYPE_P0L0 | MB_TYPE_P1L0,                               2, },
00215     { MB_TYPE_16x8    | MB_TYPE_P0L1 | MB_TYPE_P1L1,                               2, },
00216     { MB_TYPE_8x16    | MB_TYPE_P0L1 | MB_TYPE_P1L1,                               2, },
00217     { MB_TYPE_16x8    | MB_TYPE_P0L0 | MB_TYPE_P1L1,                               2, },
00218     { MB_TYPE_8x16    | MB_TYPE_P0L0 | MB_TYPE_P1L1,                               2, },
00219     { MB_TYPE_16x8    | MB_TYPE_P0L1 | MB_TYPE_P1L0,                               2, },
00220     { MB_TYPE_8x16    | MB_TYPE_P0L1 | MB_TYPE_P1L0,                               2, },
00221     { MB_TYPE_16x8    | MB_TYPE_P0L0 | MB_TYPE_P1L0 | MB_TYPE_P1L1,                2, },
00222     { MB_TYPE_8x16    | MB_TYPE_P0L0 | MB_TYPE_P1L0 | MB_TYPE_P1L1,                2, },
00223     { MB_TYPE_16x8    | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1,                2, },
00224     { MB_TYPE_8x16    | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1,                2, },
00225     { MB_TYPE_16x8    | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0,                2, },
00226     { MB_TYPE_8x16    | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0,                2, },
00227     { MB_TYPE_16x8    | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L1,                2, },
00228     { MB_TYPE_8x16    | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L1,                2, },
00229     { MB_TYPE_16x8    | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 2, },
00230     { MB_TYPE_8x16    | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 2, },
00231     { MB_TYPE_8x8     | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 4, },
00232 };
00233 
00234 static const PMbInfo b_sub_mb_type_info[13] = {
00235     { MB_TYPE_DIRECT2,                                                           1, },
00236     { MB_TYPE_16x16 | MB_TYPE_P0L0,                                              1, },
00237     { MB_TYPE_16x16 | MB_TYPE_P0L1,                                              1, },
00238     { MB_TYPE_16x16 | MB_TYPE_P0L0 | MB_TYPE_P0L1,                               1, },
00239     { MB_TYPE_16x8  | MB_TYPE_P0L0 | MB_TYPE_P1L0,                               2, },
00240     { MB_TYPE_8x16  | MB_TYPE_P0L0 | MB_TYPE_P1L0,                               2, },
00241     { MB_TYPE_16x8  | MB_TYPE_P0L1 | MB_TYPE_P1L1,                               2, },
00242     { MB_TYPE_8x16  | MB_TYPE_P0L1 | MB_TYPE_P1L1,                               2, },
00243     { MB_TYPE_16x8  | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 2, },
00244     { MB_TYPE_8x16  | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 2, },
00245     { MB_TYPE_8x8   | MB_TYPE_P0L0 | MB_TYPE_P1L0,                               4, },
00246     { MB_TYPE_8x8   | MB_TYPE_P0L1 | MB_TYPE_P1L1,                               4, },
00247     { MB_TYPE_8x8   | MB_TYPE_P0L0 | MB_TYPE_P0L1 | MB_TYPE_P1L0 | MB_TYPE_P1L1, 4, },
00248 };
00249 
00250 static const uint8_t dequant4_coeff_init[6][3] = {
00251     { 10, 13, 16 },
00252     { 11, 14, 18 },
00253     { 13, 16, 20 },
00254     { 14, 18, 23 },
00255     { 16, 20, 25 },
00256     { 18, 23, 29 },
00257 };
00258 
00259 static const uint8_t dequant8_coeff_init_scan[16] = {
00260     0, 3, 4, 3, 3, 1, 5, 1, 4, 5, 2, 5, 3, 1, 5, 1
00261 };
00262 
00263 static const uint8_t dequant8_coeff_init[6][6] = {
00264     { 20, 18, 32, 19, 25, 24 },
00265     { 22, 19, 35, 21, 28, 26 },
00266     { 26, 23, 42, 24, 33, 31 },
00267     { 28, 25, 45, 26, 35, 33 },
00268     { 32, 28, 51, 30, 40, 38 },
00269     { 36, 32, 58, 34, 46, 43 },
00270 };
00271 
00272 #endif /* AVCODEC_H264DATA_H */