FFmpeg: libavcodec/h263data.c Source File

FFmpeg
h263data.c
Go to the documentation of this file.
1 /*
2  * H.263+ tables
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @file
23  * H.263 tables.
24  */
25 
26 #include <stdint.h>
27 
28 #include "h263data.h"
29 #include "rl.h"
30 
31 /* intra MCBPC, mb_type = (intra), then (intraq) */
32  const uint8_t ff_h263_intra_MCBPC_code[9] = { 1, 1, 2, 3, 1, 1, 2, 3, 1 };
33  const uint8_t ff_h263_intra_MCBPC_bits[9] = { 1, 3, 3, 3, 4, 6, 6, 6, 9 };
34 
35 /* inter MCBPC, mb_type = (inter), (intra), (interq), (intraq), (inter4v) */
36 /* Changed the tables for interq and inter4v+q, following the standard
37  * ** Juanjo ** */
38  const uint8_t ff_h263_inter_MCBPC_code[28] = {
39  1, 3, 2, 5,
40  3, 4, 3, 3,
41  3, 7, 6, 5,
42  4, 4, 3, 2,
43  2, 5, 4, 5,
44  1, 0, 0, 0, /* Stuffing */
45  2, 12, 14, 15,
46 };
47  const uint8_t ff_h263_inter_MCBPC_bits[28] = {
48  1, 4, 4, 6, /* inter */
49  5, 8, 8, 7, /* intra */
50  3, 7, 7, 9, /* interQ */
51  6, 9, 9, 9, /* intraQ */
52  3, 7, 7, 8, /* inter4 */
53  9, 0, 0, 0, /* Stuffing */
54  11, 13, 13, 13, /* inter4Q */
55 };
56 
57  const uint8_t ff_h263_mbtype_b_tab[15][2] = {
58  { 1, 1 },
59  { 3, 3 },
60  { 1, 5 },
61  { 4, 4 },
62  { 5, 4 },
63  { 6, 6 },
64  { 2, 4 },
65  { 3, 4 },
66  { 7, 6 },
67  { 4, 6 },
68  { 5, 6 },
69  { 1, 6 },
70  { 1, 10 },
71  { 1, 7 },
72  { 1, 8 },
73 };
74 
75  const uint8_t ff_cbpc_b_tab[4][2] = {
76  { 0, 1 },
77  { 2, 2 },
78  { 7, 3 },
79  { 6, 3 },
80 };
81 
82  const uint8_t ff_h263_cbpy_tab[16][2] = {
83  { 3, 4 }, { 5, 5 }, { 4, 5 }, { 9, 4 }, { 3, 5 }, { 7, 4 }, { 2, 6 },
84  { 11, 4 }, { 2, 5 }, { 3, 6 }, { 5, 4 }, { 10, 4 }, { 4, 4 }, { 8, 4 },
85  { 6, 4 }, { 3, 2 }
86 };
87 
88  const uint8_t ff_mvtab[33][2] = {
89  { 1, 1 }, { 1, 2 }, { 1, 3 }, { 1, 4 }, { 3, 6 }, { 5, 7 },
90  { 4, 7 }, { 3, 7 }, { 11, 9 }, { 10, 9 }, { 9, 9 }, { 17, 10 },
91  { 16, 10 }, { 15, 10 }, { 14, 10 }, { 13, 10 }, { 12, 10 }, { 11, 10 },
92  { 10, 10 }, { 9, 10 }, { 8, 10 }, { 7, 10 }, { 6, 10 }, { 5, 10 },
93  { 4, 10 }, { 7, 11 }, { 6, 11 }, { 5, 11 }, { 4, 11 }, { 3, 11 },
94  { 2, 11 }, { 3, 12 }, { 2, 12 }
95 };
96 
97 /* third non intra table */
98  const uint16_t ff_inter_vlc[103][2] = {
99  { 0x2, 2 }, { 0xf, 4 }, { 0x15, 6 }, { 0x17, 7 },
100  { 0x1f, 8 }, { 0x25, 9 }, { 0x24, 9 }, { 0x21, 10 },
101  { 0x20, 10 }, { 0x7, 11 }, { 0x6, 11 }, { 0x20, 11 },
102  { 0x6, 3 }, { 0x14, 6 }, { 0x1e, 8 }, { 0xf, 10 },
103  { 0x21, 11 }, { 0x50, 12 }, { 0xe, 4 }, { 0x1d, 8 },
104  { 0xe, 10 }, { 0x51, 12 }, { 0xd, 5 }, { 0x23, 9 },
105  { 0xd, 10 }, { 0xc, 5 }, { 0x22, 9 }, { 0x52, 12 },
106  { 0xb, 5 }, { 0xc, 10 }, { 0x53, 12 }, { 0x13, 6 },
107  { 0xb, 10 }, { 0x54, 12 }, { 0x12, 6 }, { 0xa, 10 },
108  { 0x11, 6 }, { 0x9, 10 }, { 0x10, 6 }, { 0x8, 10 },
109  { 0x16, 7 }, { 0x55, 12 }, { 0x15, 7 }, { 0x14, 7 },
110  { 0x1c, 8 }, { 0x1b, 8 }, { 0x21, 9 }, { 0x20, 9 },
111  { 0x1f, 9 }, { 0x1e, 9 }, { 0x1d, 9 }, { 0x1c, 9 },
112  { 0x1b, 9 }, { 0x1a, 9 }, { 0x22, 11 }, { 0x23, 11 },
113  { 0x56, 12 }, { 0x57, 12 }, { 0x7, 4 }, { 0x19, 9 },
114  { 0x5, 11 }, { 0xf, 6 }, { 0x4, 11 }, { 0xe, 6 },
115  { 0xd, 6 }, { 0xc, 6 }, { 0x13, 7 }, { 0x12, 7 },
116  { 0x11, 7 }, { 0x10, 7 }, { 0x1a, 8 }, { 0x19, 8 },
117  { 0x18, 8 }, { 0x17, 8 }, { 0x16, 8 }, { 0x15, 8 },
118  { 0x14, 8 }, { 0x13, 8 }, { 0x18, 9 }, { 0x17, 9 },
119  { 0x16, 9 }, { 0x15, 9 }, { 0x14, 9 }, { 0x13, 9 },
120  { 0x12, 9 }, { 0x11, 9 }, { 0x7, 10 }, { 0x6, 10 },
121  { 0x5, 10 }, { 0x4, 10 }, { 0x24, 11 }, { 0x25, 11 },
122  { 0x26, 11 }, { 0x27, 11 }, { 0x58, 12 }, { 0x59, 12 },
123  { 0x5a, 12 }, { 0x5b, 12 }, { 0x5c, 12 }, { 0x5d, 12 },
124  { 0x5e, 12 }, { 0x5f, 12 }, { 0x3, 7 },
125 };
126 
127  const int8_t ff_inter_level[102] = {
128  1, 2, 3, 4, 5, 6, 7, 8,
129  9, 10, 11, 12, 1, 2, 3, 4,
130  5, 6, 1, 2, 3, 4, 1, 2,
131  3, 1, 2, 3, 1, 2, 3, 1,
132  2, 3, 1, 2, 1, 2, 1, 2,
133  1, 2, 1, 1, 1, 1, 1, 1,
134  1, 1, 1, 1, 1, 1, 1, 1,
135  1, 1, 1, 2, 3, 1, 2, 1,
136  1, 1, 1, 1, 1, 1, 1, 1,
137  1, 1, 1, 1, 1, 1, 1, 1,
138  1, 1, 1, 1, 1, 1, 1, 1,
139  1, 1, 1, 1, 1, 1, 1, 1,
140  1, 1, 1, 1, 1, 1,
141 };
142 
143  const int8_t ff_inter_run[102] = {
144  0, 0, 0, 0, 0, 0, 0, 0,
145  0, 0, 0, 0, 1, 1, 1, 1,
146  1, 1, 2, 2, 2, 2, 3, 3,
147  3, 4, 4, 4, 5, 5, 5, 6,
148  6, 6, 7, 7, 8, 8, 9, 9,
149  10, 10, 11, 12, 13, 14, 15, 16,
150  17, 18, 19, 20, 21, 22, 23, 24,
151  25, 26, 0, 0, 0, 1, 1, 2,
152  3, 4, 5, 6, 7, 8, 9, 10,
153  11, 12, 13, 14, 15, 16, 17, 18,
154  19, 20, 21, 22, 23, 24, 25, 26,
155  27, 28, 29, 30, 31, 32, 33, 34,
156  35, 36, 37, 38, 39, 40,
157 };
158 
159  RLTable ff_h263_rl_inter = {
160  102,
161  58,
162  ff_inter_vlc,
163  ff_inter_run,
164  ff_inter_level,
165 };
166 
167  static const uint16_t intra_vlc_aic[103][2] = {
168  { 0x2, 2 }, { 0x6, 3 }, { 0xe, 4 }, { 0xc, 5 },
169  { 0xd, 5 }, { 0x10, 6 }, { 0x11, 6 }, { 0x12, 6 },
170  { 0x16, 7 }, { 0x1b, 8 }, { 0x20, 9 }, { 0x21, 9 },
171  { 0x1a, 9 }, { 0x1b, 9 }, { 0x1c, 9 }, { 0x1d, 9 },
172  { 0x1e, 9 }, { 0x1f, 9 }, { 0x23, 11 }, { 0x22, 11 },
173  { 0x57, 12 }, { 0x56, 12 }, { 0x55, 12 }, { 0x54, 12 },
174  { 0x53, 12 }, { 0xf, 4 }, { 0x14, 6 }, { 0x14, 7 },
175  { 0x1e, 8 }, { 0xf, 10 }, { 0x21, 11 }, { 0x50, 12 },
176  { 0xb, 5 }, { 0x15, 7 }, { 0xe, 10 }, { 0x9, 10 },
177  { 0x15, 6 }, { 0x1d, 8 }, { 0xd, 10 }, { 0x51, 12 },
178  { 0x13, 6 }, { 0x23, 9 }, { 0x7, 11 }, { 0x17, 7 },
179  { 0x22, 9 }, { 0x52, 12 }, { 0x1c, 8 }, { 0xc, 10 },
180  { 0x1f, 8 }, { 0xb, 10 }, { 0x25, 9 }, { 0xa, 10 },
181  { 0x24, 9 }, { 0x6, 11 }, { 0x21, 10 }, { 0x20, 10 },
182  { 0x8, 10 }, { 0x20, 11 }, { 0x7, 4 }, { 0xc, 6 },
183  { 0x10, 7 }, { 0x13, 8 }, { 0x11, 9 }, { 0x12, 9 },
184  { 0x4, 10 }, { 0x27, 11 }, { 0x26, 11 }, { 0x5f, 12 },
185  { 0xf, 6 }, { 0x13, 9 }, { 0x5, 10 }, { 0x25, 11 },
186  { 0xe, 6 }, { 0x14, 9 }, { 0x24, 11 }, { 0xd, 6 },
187  { 0x6, 10 }, { 0x5e, 12 }, { 0x11, 7 }, { 0x7, 10 },
188  { 0x13, 7 }, { 0x5d, 12 }, { 0x12, 7 }, { 0x5c, 12 },
189  { 0x14, 8 }, { 0x5b, 12 }, { 0x15, 8 }, { 0x1a, 8 },
190  { 0x19, 8 }, { 0x18, 8 }, { 0x17, 8 }, { 0x16, 8 },
191  { 0x19, 9 }, { 0x15, 9 }, { 0x16, 9 }, { 0x18, 9 },
192  { 0x17, 9 }, { 0x4, 11 }, { 0x5, 11 }, { 0x58, 12 },
193  { 0x59, 12 }, { 0x5a, 12 }, { 0x3, 7 },
194 };
195 
196  static const int8_t intra_run_aic[102] = {
197  0, 0, 0, 0, 0, 0, 0, 0,
198  0, 0, 0, 0, 0, 0, 0, 0,
199  0, 0, 0, 0, 0, 0, 0, 0,
200  0, 1, 1, 1, 1, 1, 1, 1,
201  2, 2, 2, 2, 3, 3, 3, 3,
202  4, 4, 4, 5, 5, 5, 6, 6,
203  7, 7, 8, 8, 9, 9, 10, 11,
204  12, 13, 0, 0, 0, 0, 0, 0,
205  0, 0, 0, 0, 1, 1, 1, 1,
206  2, 2, 2, 3, 3, 3, 4, 4,
207  5, 5, 6, 6, 7, 7, 8, 9,
208  10, 11, 12, 13, 14, 15, 16, 17,
209  18, 19, 20, 21, 22, 23,
210 };
211 
212  static const int8_t intra_level_aic[102] = {
213  1, 2, 3, 4, 5, 6, 7, 8,
214  9, 10, 11, 12, 13, 14, 15, 16,
215  17, 18, 19, 20, 21, 22, 23, 24,
216  25, 1, 2, 3, 4, 5, 6, 7,
217  1, 2, 3, 4, 1, 2, 3, 4,
218  1, 2, 3, 1, 2, 3, 1, 2,
219  1, 2, 1, 2, 1, 2, 1, 1,
220  1, 1, 1, 2, 3, 4, 5, 6,
221  7, 8, 9, 10, 1, 2, 3, 4,
222  1, 2, 3, 1, 2, 3, 1, 2,
223  1, 2, 1, 2, 1, 2, 1, 1,
224  1, 1, 1, 1, 1, 1, 1, 1,
225  1, 1, 1, 1, 1, 1,
226 };
227 
228  RLTable ff_rl_intra_aic = {
229  102,
230  58,
231  intra_vlc_aic,
232  intra_run_aic,
233  intra_level_aic,
234 };
235 
236  const uint16_t ff_h263_format[8][2] = {
237  { 0, 0 },
238  { 128, 96 },
239  { 176, 144 },
240  { 352, 288 },
241  { 704, 576 },
242  { 1408, 1152 },
243 };
244 
245  const uint8_t ff_aic_dc_scale_table[32] = {
246 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
247  0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62
248 };
249 
250  const uint8_t ff_modified_quant_tab[2][32] = {
251 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
252  {
253  0, 3, 1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28
254  },
255  {
256  0, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 31, 31, 26
257  }
258 };
259 
260  const uint8_t ff_h263_chroma_qscale_table[32] = {
261 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
262  0, 1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15
263 };
264 
265  const uint16_t ff_mba_max[6] = {
266  47, 98, 395, 1583, 6335, 9215
267 };
268 
269  const uint8_t ff_mba_length[7] = {
270  6, 7, 9, 11, 13, 14, 14
271 };
272 
273  const AVRational ff_h263_pixel_aspect[16] = {
274  { 0, 1 },
275  { 1, 1 },
276  { 12, 11 },
277  { 10, 11 },
278  { 16, 11 },
279  { 40, 33 },
280  { 0, 1 },
281  { 0, 1 },
282  { 0, 1 },
283  { 0, 1 },
284  { 0, 1 },
285  { 0, 1 },
286  { 0, 1 },
287  { 0, 1 },
288  { 0, 1 },
289  { 0, 1 },
290 };
h263data.h
ff_inter_run
const int8_t ff_inter_run[102]
Definition: h263data.c:143
ff_h263_pixel_aspect
const AVRational ff_h263_pixel_aspect[16]
Definition: h263data.c:273
RLTable
RLTable.
Definition: rl.h:39
intra_level_aic
static const int8_t intra_level_aic[102]
Definition: h263data.c:212
ff_cbpc_b_tab
const uint8_t ff_cbpc_b_tab[4][2]
Definition: h263data.c:75
ff_h263_chroma_qscale_table
const uint8_t ff_h263_chroma_qscale_table[32]
Definition: h263data.c:260
ff_inter_vlc
const uint16_t ff_inter_vlc[103][2]
Definition: h263data.c:98
ff_inter_level
const int8_t ff_inter_level[102]
Definition: h263data.c:127
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
ff_mba_max
const uint16_t ff_mba_max[6]
Definition: h263data.c:265
intra_run_aic
static const int8_t intra_run_aic[102]
Definition: h263data.c:196
ff_h263_rl_inter
RLTable ff_h263_rl_inter
Definition: h263data.c:159
ff_h263_cbpy_tab
const uint8_t ff_h263_cbpy_tab[16][2]
Definition: h263data.c:82
ff_rl_intra_aic
RLTable ff_rl_intra_aic
Definition: h263data.c:228
ff_h263_inter_MCBPC_bits
const uint8_t ff_h263_inter_MCBPC_bits[28]
Definition: h263data.c:47
ff_h263_format
const uint16_t ff_h263_format[8][2]
Definition: h263data.c:236
ff_aic_dc_scale_table
const uint8_t ff_aic_dc_scale_table[32]
Definition: h263data.c:245
ff_mvtab
const uint8_t ff_mvtab[33][2]
Definition: h263data.c:88
ff_h263_intra_MCBPC_bits
const uint8_t ff_h263_intra_MCBPC_bits[9]
Definition: h263data.c:33
ff_h263_intra_MCBPC_code
const uint8_t ff_h263_intra_MCBPC_code[9]
Definition: h263data.c:32
ff_mba_length
const uint8_t ff_mba_length[7]
Definition: h263data.c:269
ff_h263_inter_MCBPC_code
const uint8_t ff_h263_inter_MCBPC_code[28]
Definition: h263data.c:38
ff_modified_quant_tab
const uint8_t ff_modified_quant_tab[2][32]
Definition: h263data.c:250
rl.h
intra_vlc_aic
static const uint16_t intra_vlc_aic[103][2]
Definition: h263data.c:167
ff_h263_mbtype_b_tab
const uint8_t ff_h263_mbtype_b_tab[15][2]
Definition: h263data.c:57
Generated on Fri Aug 22 2025 13:58:22 for FFmpeg by   doxygen 1.8.17

AltStyle によって変換されたページ (->オリジナル) /