17a52dd021b29dd96fdc2c81b965a4618b4f872c
[libav.git] / libavcodec / mpeg4data.h
1 /*
2 * copyright (c) 2000,2001 Fabrice Bellard
3 * H263+ support
4 * copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file mpeg4data.h
25 * mpeg4 tables.
26 */
27
28 #include <stdint.h>
29 #include "mpegvideo.h"
30
31 // shapes
32 #define RECT_SHAPE 0
33 #define BIN_SHAPE 1
34 #define BIN_ONLY_SHAPE 2
35 #define GRAY_SHAPE 3
36
37 #define SIMPLE_VO_TYPE 1
38 #define CORE_VO_TYPE 3
39 #define MAIN_VO_TYPE 4
40 #define NBIT_VO_TYPE 5
41 #define ARTS_VO_TYPE 10
42 #define ACE_VO_TYPE 12
43 #define ADV_SIMPLE_VO_TYPE 17
44
45 // aspect_ratio_info
46 #define EXTENDED_PAR 15
47
48 //vol_sprite_usage / sprite_enable
49 #define STATIC_SPRITE 1
50 #define GMC_SPRITE 2
51
52 #define MOTION_MARKER 0x1F001
53 #define DC_MARKER 0x6B001
54
55 static const int mb_type_b_map[4]= {
56 MB_TYPE_DIRECT2 | MB_TYPE_L0L1,
57 MB_TYPE_L0L1 | MB_TYPE_16x16,
58 MB_TYPE_L1 | MB_TYPE_16x16,
59 MB_TYPE_L0 | MB_TYPE_16x16,
60 };
61
62 #define VOS_STARTCODE 0x1B0
63 #define USER_DATA_STARTCODE 0x1B2
64 #define GOP_STARTCODE 0x1B3
65 #define VISUAL_OBJ_STARTCODE 0x1B5
66 #define VOP_STARTCODE 0x1B6
67
68 /* dc encoding for mpeg4 */
69 const uint8_t DCtab_lum[13][2] =
70 {
71 {3,3}, {3,2}, {2,2}, {2,3}, {1,3}, {1,4}, {1,5}, {1,6}, {1,7},
72 {1,8}, {1,9}, {1,10}, {1,11},
73 };
74
75 const uint8_t DCtab_chrom[13][2] =
76 {
77 {3,2}, {2,2}, {1,2}, {1,3}, {1,4}, {1,5}, {1,6}, {1,7}, {1,8},
78 {1,9}, {1,10}, {1,11}, {1,12},
79 };
80
81 const uint16_t intra_vlc[103][2] = {
82 { 0x2, 2 },
83 { 0x6, 3 },{ 0xf, 4 },{ 0xd, 5 },{ 0xc, 5 },
84 { 0x15, 6 },{ 0x13, 6 },{ 0x12, 6 },{ 0x17, 7 },
85 { 0x1f, 8 },{ 0x1e, 8 },{ 0x1d, 8 },{ 0x25, 9 },
86 { 0x24, 9 },{ 0x23, 9 },{ 0x21, 9 },{ 0x21, 10 },
87 { 0x20, 10 },{ 0xf, 10 },{ 0xe, 10 },{ 0x7, 11 },
88 { 0x6, 11 },{ 0x20, 11 },{ 0x21, 11 },{ 0x50, 12 },
89 { 0x51, 12 },{ 0x52, 12 },{ 0xe, 4 },{ 0x14, 6 },
90 { 0x16, 7 },{ 0x1c, 8 },{ 0x20, 9 },{ 0x1f, 9 },
91 { 0xd, 10 },{ 0x22, 11 },{ 0x53, 12 },{ 0x55, 12 },
92 { 0xb, 5 },{ 0x15, 7 },{ 0x1e, 9 },{ 0xc, 10 },
93 { 0x56, 12 },{ 0x11, 6 },{ 0x1b, 8 },{ 0x1d, 9 },
94 { 0xb, 10 },{ 0x10, 6 },{ 0x22, 9 },{ 0xa, 10 },
95 { 0xd, 6 },{ 0x1c, 9 },{ 0x8, 10 },{ 0x12, 7 },
96 { 0x1b, 9 },{ 0x54, 12 },{ 0x14, 7 },{ 0x1a, 9 },
97 { 0x57, 12 },{ 0x19, 8 },{ 0x9, 10 },{ 0x18, 8 },
98 { 0x23, 11 },{ 0x17, 8 },{ 0x19, 9 },{ 0x18, 9 },
99 { 0x7, 10 },{ 0x58, 12 },{ 0x7, 4 },{ 0xc, 6 },
100 { 0x16, 8 },{ 0x17, 9 },{ 0x6, 10 },{ 0x5, 11 },
101 { 0x4, 11 },{ 0x59, 12 },{ 0xf, 6 },{ 0x16, 9 },
102 { 0x5, 10 },{ 0xe, 6 },{ 0x4, 10 },{ 0x11, 7 },
103 { 0x24, 11 },{ 0x10, 7 },{ 0x25, 11 },{ 0x13, 7 },
104 { 0x5a, 12 },{ 0x15, 8 },{ 0x5b, 12 },{ 0x14, 8 },
105 { 0x13, 8 },{ 0x1a, 8 },{ 0x15, 9 },{ 0x14, 9 },
106 { 0x13, 9 },{ 0x12, 9 },{ 0x11, 9 },{ 0x26, 11 },
107 { 0x27, 11 },{ 0x5c, 12 },{ 0x5d, 12 },{ 0x5e, 12 },
108 { 0x5f, 12 },{ 0x3, 7 },
109 };
110
111 const int8_t intra_level[102] = {
112 1, 2, 3, 4, 5, 6, 7, 8,
113 9, 10, 11, 12, 13, 14, 15, 16,
114 17, 18, 19, 20, 21, 22, 23, 24,
115 25, 26, 27, 1, 2, 3, 4, 5,
116 6, 7, 8, 9, 10, 1, 2, 3,
117 4, 5, 1, 2, 3, 4, 1, 2,
118 3, 1, 2, 3, 1, 2, 3, 1,
119 2, 3, 1, 2, 1, 2, 1, 1,
120 1, 1, 1, 1, 2, 3, 4, 5,
121 6, 7, 8, 1, 2, 3, 1, 2,
122 1, 2, 1, 2, 1, 2, 1, 2,
123 1, 1, 1, 1, 1, 1, 1, 1,
124 1, 1, 1, 1, 1, 1,
125 };
126
127 const int8_t intra_run[102] = {
128 0, 0, 0, 0, 0, 0, 0, 0,
129 0, 0, 0, 0, 0, 0, 0, 0,
130 0, 0, 0, 0, 0, 0, 0, 0,
131 0, 0, 0, 1, 1, 1, 1, 1,
132 1, 1, 1, 1, 1, 2, 2, 2,
133 2, 2, 3, 3, 3, 3, 4, 4,
134 4, 5, 5, 5, 6, 6, 6, 7,
135 7, 7, 8, 8, 9, 9, 10, 11,
136 12, 13, 14, 0, 0, 0, 0, 0,
137 0, 0, 0, 1, 1, 1, 2, 2,
138 3, 3, 4, 4, 5, 5, 6, 6,
139 7, 8, 9, 10, 11, 12, 13, 14,
140 15, 16, 17, 18, 19, 20,
141 };
142
143 static RLTable rl_intra = {
144 102,
145 67,
146 intra_vlc,
147 intra_run,
148 intra_level,
149 };
150
151 /* Note this is identical to the intra rvlc except that it is reordered. */
152 static const uint16_t inter_rvlc[170][2]={
153 {0x0006, 3},{0x0001, 4},{0x0004, 5},{0x001C, 7},
154 {0x003C, 8},{0x003D, 8},{0x007C, 9},{0x00FC, 10},
155 {0x00FD, 10},{0x01FC, 11},{0x01FD, 11},{0x03FC, 12},
156 {0x07FC, 13},{0x07FD, 13},{0x0BFC, 13},{0x0BFD, 13},
157 {0x0FFC, 14},{0x0FFD, 14},{0x1FFC, 15},{0x0007, 3},
158 {0x000C, 6},{0x005C, 8},{0x007D, 9},{0x017C, 10},
159 {0x02FC, 11},{0x03FD, 12},{0x0DFC, 13},{0x17FC, 14},
160 {0x17FD, 14},{0x000A, 4},{0x001D, 7},{0x00BC, 9},
161 {0x02FD, 11},{0x05FC, 12},{0x1BFC, 14},{0x1BFD, 14},
162 {0x0005, 5},{0x005D, 8},{0x017D, 10},{0x05FD, 12},
163 {0x0DFD, 13},{0x1DFC, 14},{0x1FFD, 15},{0x0008, 5},
164 {0x006C, 8},{0x037C, 11},{0x0EFC, 13},{0x2FFC, 15},
165 {0x0009, 5},{0x00BD, 9},{0x037D, 11},{0x0EFD, 13},
166 {0x000D, 6},{0x01BC, 10},{0x06FC, 12},{0x1DFD, 14},
167 {0x0014, 6},{0x01BD, 10},{0x06FD, 12},{0x2FFD, 15},
168 {0x0015, 6},{0x01DC, 10},{0x0F7C, 13},{0x002C, 7},
169 {0x01DD, 10},{0x1EFC, 14},{0x002D, 7},{0x03BC, 11},
170 {0x0034, 7},{0x077C, 12},{0x006D, 8},{0x0F7D, 13},
171 {0x0074, 8},{0x1EFD, 14},{0x0075, 8},{0x1F7C, 14},
172 {0x00DC, 9},{0x1F7D, 14},{0x00DD, 9},{0x1FBC, 14},
173 {0x00EC, 9},{0x37FC, 15},{0x01EC, 10},{0x01ED, 10},
174 {0x01F4, 10},{0x03BD, 11},{0x03DC, 11},{0x03DD, 11},
175 {0x03EC, 11},{0x03ED, 11},{0x03F4, 11},{0x077D, 12},
176 {0x07BC, 12},{0x07BD, 12},{0x0FBC, 13},{0x0FBD, 13},
177 {0x0FDC, 13},{0x0FDD, 13},{0x1FBD, 14},{0x1FDC, 14},
178 {0x1FDD, 14},{0x37FD, 15},{0x3BFC, 15},
179 {0x000B, 4},{0x0078, 8},{0x03F5, 11},{0x0FEC, 13},
180 {0x1FEC, 14},{0x0012, 5},{0x00ED, 9},{0x07DC, 12},
181 {0x1FED, 14},{0x3BFD, 15},{0x0013, 5},{0x03F8, 11},
182 {0x3DFC, 15},{0x0018, 6},{0x07DD, 12},{0x0019, 6},
183 {0x07EC, 12},{0x0022, 6},{0x0FED, 13},{0x0023, 6},
184 {0x0FF4, 13},{0x0035, 7},{0x0FF5, 13},{0x0038, 7},
185 {0x0FF8, 13},{0x0039, 7},{0x0FF9, 13},{0x0042, 7},
186 {0x1FF4, 14},{0x0043, 7},{0x1FF5, 14},{0x0079, 8},
187 {0x1FF8, 14},{0x0082, 8},{0x3DFD, 15},{0x0083, 8},
188 {0x00F4, 9},{0x00F5, 9},{0x00F8, 9},{0x00F9, 9},
189 {0x0102, 9},{0x0103, 9},{0x01F5, 10},{0x01F8, 10},
190 {0x01F9, 10},{0x0202, 10},{0x0203, 10},{0x03F9, 11},
191 {0x0402, 11},{0x0403, 11},{0x07ED, 12},{0x07F4, 12},
192 {0x07F5, 12},{0x07F8, 12},{0x07F9, 12},{0x0802, 12},
193 {0x0803, 12},{0x1002, 13},{0x1003, 13},{0x1FF9, 14},
194 {0x2002, 14},{0x2003, 14},{0x3EFC, 15},{0x3EFD, 15},
195 {0x3F7C, 15},{0x3F7D, 15},{0x0000, 4}
196 };
197
198 static const int8_t inter_rvlc_run[169]={
199 0, 0, 0, 0, 0, 0, 0, 0,
200 0, 0, 0, 0, 0, 0, 0, 0,
201 0, 0, 0, 1, 1, 1, 1, 1,
202 1, 1, 1, 1, 1, 2, 2, 2,
203 2, 2, 2, 2, 3, 3, 3, 3,
204 3, 3, 3, 4, 4, 4, 4, 4,
205 5, 5, 5, 5, 6, 6, 6, 6,
206 7, 7, 7, 7, 8, 8, 8, 9,
207 9, 9, 10, 10, 11, 11, 12, 12,
208 13, 13, 14, 14, 15, 15, 16, 16,
209 17, 17, 18, 19, 20, 21, 22, 23,
210 24, 25, 26, 27, 28, 29, 30, 31,
211 32, 33, 34, 35, 36, 37, 38,
212 0, 0, 0, 0, 0, 1, 1, 1,
213 1, 1, 2, 2, 2, 3, 3, 4,
214 4, 5, 5, 6, 6, 7, 7, 8,
215 8, 9, 9, 10, 10, 11, 11, 12,
216 12, 13, 13, 14, 15, 16, 17, 18,
217 19, 20, 21, 22, 23, 24, 25, 26,
218 27, 28, 29, 30, 31, 32, 33, 34,
219 35, 36, 37, 38, 39, 40, 41, 42,
220 43, 44,
221 };
222
223 static const int8_t inter_rvlc_level[169]={
224 1, 2, 3, 4, 5, 6, 7, 8,
225 9, 10, 11, 12, 13, 14, 15, 16,
226 17, 18, 19, 1, 2, 3, 4, 5,
227 6, 7, 8, 9, 10, 1, 2, 3,
228 4, 5, 6, 7, 1, 2, 3, 4,
229 5, 6, 7, 1, 2, 3, 4, 5,
230 1, 2, 3, 4, 1, 2, 3, 4,
231 1, 2, 3, 4, 1, 2, 3, 1,
232 2, 3, 1, 2, 1, 2, 1, 2,
233 1, 2, 1, 2, 1, 2, 1, 2,
234 1, 2, 1, 1, 1, 1, 1, 1,
235 1, 1, 1, 1, 1, 1, 1, 1,
236 1, 1, 1, 1, 1, 1, 1,
237 1, 2, 3, 4, 5, 1, 2, 3,
238 4, 5, 1, 2, 3, 1, 2, 1,
239 2, 1, 2, 1, 2, 1, 2, 1,
240 2, 1, 2, 1, 2, 1, 2, 1,
241 2, 1, 2, 1, 1, 1, 1, 1,
242 1, 1, 1, 1, 1, 1, 1, 1,
243 1, 1, 1, 1, 1, 1, 1, 1,
244 1, 1, 1, 1, 1, 1, 1, 1,
245 1, 1,
246 };
247
248 static RLTable rvlc_rl_inter = {
249 169,
250 103,
251 inter_rvlc,
252 inter_rvlc_run,
253 inter_rvlc_level,
254 };
255
256 static const uint16_t intra_rvlc[170][2]={
257 {0x0006, 3},{0x0007, 3},{0x000A, 4},{0x0009, 5},
258 {0x0014, 6},{0x0015, 6},{0x0034, 7},{0x0074, 8},
259 {0x0075, 8},{0x00DD, 9},{0x00EC, 9},{0x01EC, 10},
260 {0x01ED, 10},{0x01F4, 10},{0x03EC, 11},{0x03ED, 11},
261 {0x03F4, 11},{0x077D, 12},{0x07BC, 12},{0x0FBD, 13},
262 {0x0FDC, 13},{0x07BD, 12},{0x0FDD, 13},{0x1FBD, 14},
263 {0x1FDC, 14},{0x1FDD, 14},{0x1FFC, 15},{0x0001, 4},
264 {0x0008, 5},{0x002D, 7},{0x006C, 8},{0x006D, 8},
265 {0x00DC, 9},{0x01DD, 10},{0x03DC, 11},{0x03DD, 11},
266 {0x077C, 12},{0x0FBC, 13},{0x1F7D, 14},{0x1FBC, 14},
267 {0x0004, 5},{0x002C, 7},{0x00BC, 9},{0x01DC, 10},
268 {0x03BC, 11},{0x03BD, 11},{0x0EFD, 13},{0x0F7C, 13},
269 {0x0F7D, 13},{0x1EFD, 14},{0x1F7C, 14},{0x0005, 5},
270 {0x005C, 8},{0x00BD, 9},{0x037D, 11},{0x06FC, 12},
271 {0x0EFC, 13},{0x1DFD, 14},{0x1EFC, 14},{0x1FFD, 15},
272 {0x000C, 6},{0x005D, 8},{0x01BD, 10},{0x03FD, 12},
273 {0x06FD, 12},{0x1BFD, 14},{0x000D, 6},{0x007D, 9},
274 {0x02FC, 11},{0x05FC, 12},{0x1BFC, 14},{0x1DFC, 14},
275 {0x001C, 7},{0x017C, 10},{0x02FD, 11},{0x05FD, 12},
276 {0x2FFC, 15},{0x001D, 7},{0x017D, 10},{0x037C, 11},
277 {0x0DFD, 13},{0x2FFD, 15},{0x003C, 8},{0x01BC, 10},
278 {0x0BFD, 13},{0x17FD, 14},{0x003D, 8},{0x01FD, 11},
279 {0x0DFC, 13},{0x37FC, 15},{0x007C, 9},{0x03FC, 12},
280 {0x00FC, 10},{0x0BFC, 13},{0x00FD, 10},{0x37FD, 15},
281 {0x01FC, 11},{0x07FC, 13},{0x07FD, 13},{0x0FFC, 14},
282 {0x0FFD, 14},{0x17FC, 14},{0x3BFC, 15},
283 {0x000B, 4},{0x0078, 8},{0x03F5, 11},{0x0FEC, 13},
284 {0x1FEC, 14},{0x0012, 5},{0x00ED, 9},{0x07DC, 12},
285 {0x1FED, 14},{0x3BFD, 15},{0x0013, 5},{0x03F8, 11},
286 {0x3DFC, 15},{0x0018, 6},{0x07DD, 12},{0x0019, 6},
287 {0x07EC, 12},{0x0022, 6},{0x0FED, 13},{0x0023, 6},
288 {0x0FF4, 13},{0x0035, 7},{0x0FF5, 13},{0x0038, 7},
289 {0x0FF8, 13},{0x0039, 7},{0x0FF9, 13},{0x0042, 7},
290 {0x1FF4, 14},{0x0043, 7},{0x1FF5, 14},{0x0079, 8},
291 {0x1FF8, 14},{0x0082, 8},{0x3DFD, 15},{0x0083, 8},
292 {0x00F4, 9},{0x00F5, 9},{0x00F8, 9},{0x00F9, 9},
293 {0x0102, 9},{0x0103, 9},{0x01F5, 10},{0x01F8, 10},
294 {0x01F9, 10},{0x0202, 10},{0x0203, 10},{0x03F9, 11},
295 {0x0402, 11},{0x0403, 11},{0x07ED, 12},{0x07F4, 12},
296 {0x07F5, 12},{0x07F8, 12},{0x07F9, 12},{0x0802, 12},
297 {0x0803, 12},{0x1002, 13},{0x1003, 13},{0x1FF9, 14},
298 {0x2002, 14},{0x2003, 14},{0x3EFC, 15},{0x3EFD, 15},
299 {0x3F7C, 15},{0x3F7D, 15},{0x0000, 4}
300 };
301
302 static const int8_t intra_rvlc_run[169]={
303 0, 0, 0, 0, 0, 0, 0, 0,
304 0, 0, 0, 0, 0, 0, 0, 0,
305 0, 0, 0, 0, 0, 0, 0, 0,
306 0, 0, 0, 1, 1, 1, 1, 1,
307 1, 1, 1, 1, 1, 1, 1, 1,
308 2, 2, 2, 2, 2, 2, 2, 2,
309 2, 2, 2, 3, 3, 3, 3, 3,
310 3, 3, 3, 3, 4, 4, 4, 4,
311 4, 4, 5, 5, 5, 5, 5, 5,
312 6, 6, 6, 6, 6, 7, 7, 7,
313 7, 7, 8, 8, 8, 8, 9, 9,
314 9, 9, 10, 10, 11, 11, 12, 12,
315 13, 14, 15, 16, 17, 18, 19,
316 0, 0, 0, 0, 0, 1, 1, 1,
317 1, 1, 2, 2, 2, 3, 3, 4,
318 4, 5, 5, 6, 6, 7, 7, 8,
319 8, 9, 9, 10, 10, 11, 11, 12,
320 12, 13, 13, 14, 15, 16, 17, 18,
321 19, 20, 21, 22, 23, 24, 25, 26,
322 27, 28, 29, 30, 31, 32, 33, 34,
323 35, 36, 37, 38, 39, 40, 41, 42,
324 43, 44,
325 };
326
327 static const int8_t intra_rvlc_level[169]={
328 1, 2, 3, 4, 5, 6, 7, 8,
329 9, 10, 11, 12, 13, 14, 15, 16,
330 17, 18, 19, 20, 21, 22, 23, 24,
331 25, 26, 27, 1, 2, 3, 4, 5,
332 6, 7, 8, 9, 10, 11, 12, 13,
333 1, 2, 3, 4, 5, 6, 7, 8,
334 9, 10, 11, 1, 2, 3, 4, 5,
335 6, 7, 8, 9, 1, 2, 3, 4,
336 5, 6, 1, 2, 3, 4, 5, 6,
337 1, 2, 3, 4, 5, 1, 2, 3,
338 4, 5, 1, 2, 3, 4, 1, 2,
339 3, 4, 1, 2, 1, 2, 1, 2,
340 1, 1, 1, 1, 1, 1, 1,
341 1, 2, 3, 4, 5, 1, 2, 3,
342 4, 5, 1, 2, 3, 1, 2, 1,
343 2, 1, 2, 1, 2, 1, 2, 1,
344 2, 1, 2, 1, 2, 1, 2, 1,
345 2, 1, 2, 1, 1, 1, 1, 1,
346 1, 1, 1, 1, 1, 1, 1, 1,
347 1, 1, 1, 1, 1, 1, 1, 1,
348 1, 1, 1, 1, 1, 1, 1, 1,
349 1, 1,
350 };
351
352 static RLTable rvlc_rl_intra = {
353 169,
354 103,
355 intra_rvlc,
356 intra_rvlc_run,
357 intra_rvlc_level,
358 };
359
360 static const uint16_t sprite_trajectory_tab[15][2] = {
361 {0x00, 2}, {0x02, 3}, {0x03, 3}, {0x04, 3}, {0x05, 3}, {0x06, 3},
362 {0x0E, 4}, {0x1E, 5}, {0x3E, 6}, {0x7E, 7}, {0xFE, 8},
363 {0x1FE, 9},{0x3FE, 10},{0x7FE, 11},{0xFFE, 12},
364 };
365
366 static const uint8_t mb_type_b_tab[4][2] = {
367 {1, 1}, {1, 2}, {1, 3}, {1, 4},
368 };
369
370 static const AVRational pixel_aspect[16]={
371 {0, 1},
372 {1, 1},
373 {12, 11},
374 {10, 11},
375 {16, 11},
376 {40, 33},
377 {0, 1},
378 {0, 1},
379 {0, 1},
380 {0, 1},
381 {0, 1},
382 {0, 1},
383 {0, 1},
384 {0, 1},
385 {0, 1},
386 {0, 1},
387 };
388
389 /* these matrixes will be permuted for the idct */
390 const int16_t ff_mpeg4_default_intra_matrix[64] = {
391 8, 17, 18, 19, 21, 23, 25, 27,
392 17, 18, 19, 21, 23, 25, 27, 28,
393 20, 21, 22, 23, 24, 26, 28, 30,
394 21, 22, 23, 24, 26, 28, 30, 32,
395 22, 23, 24, 26, 28, 30, 32, 35,
396 23, 24, 26, 28, 30, 32, 35, 38,
397 25, 26, 28, 30, 32, 35, 38, 41,
398 27, 28, 30, 32, 35, 38, 41, 45,
399 };
400
401 const int16_t ff_mpeg4_default_non_intra_matrix[64] = {
402 16, 17, 18, 19, 20, 21, 22, 23,
403 17, 18, 19, 20, 21, 22, 23, 24,
404 18, 19, 20, 21, 22, 23, 24, 25,
405 19, 20, 21, 22, 23, 24, 26, 27,
406 20, 21, 22, 23, 25, 26, 27, 28,
407 21, 22, 23, 24, 26, 27, 28, 30,
408 22, 23, 24, 26, 27, 28, 30, 31,
409 23, 24, 25, 27, 28, 30, 31, 33,
410 };
411
412 const uint8_t ff_mpeg4_y_dc_scale_table[32]={
413 // 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
414 0, 8, 8, 8, 8,10,12,14,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,34,36,38,40,42,44,46
415 };
416 const uint8_t ff_mpeg4_c_dc_scale_table[32]={
417 // 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
418 0, 8, 8, 8, 8, 9, 9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,19,20,21,22,23,24,25
419 };
420
421 const uint16_t ff_mpeg4_resync_prefix[8]={
422 0x7F00, 0x7E00, 0x7C00, 0x7800, 0x7000, 0x6000, 0x4000, 0x0000
423 };
424
425 static const uint8_t mpeg4_dc_threshold[8]={
426 99, 13, 15, 17, 19, 21, 23, 0
427 };