FFmpeg
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dvdata.c
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1 /*
2  * Constants for DV codec
3  * Copyright (c) 2002 Fabrice Bellard
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
24  * Constants for DV codec.
25  */
26 
27 #include <stdint.h>
28 
29 #include "dvdata.h"
30 
31 /* unquant tables (not used directly) */
32 const uint8_t ff_dv_quant_shifts[22][4] = {
33  { 3,3,4,4 },
34  { 3,3,4,4 },
35  { 2,3,3,4 },
36  { 2,3,3,4 },
37  { 2,2,3,3 },
38  { 2,2,3,3 },
39  { 1,2,2,3 },
40  { 1,2,2,3 },
41  { 1,1,2,2 },
42  { 1,1,2,2 },
43  { 0,1,1,2 },
44  { 0,1,1,2 },
45  { 0,0,1,1 },
46  { 0,0,1,1 },
47  { 0,0,0,1 },
48  { 0,0,0,0 },
49  { 0,0,0,0 },
50  { 0,0,0,0 },
51  { 0,0,0,0 },
52  { 0,0,0,0 },
53  { 0,0,0,0 },
54  { 0,0,0,0 },
55 };
56 
57 const uint8_t ff_dv_quant_offset[4] = { 6, 3, 0, 1 };
58 
59 const int ff_dv_iweight_88[64] = {
60  32768, 16710, 16710, 17735, 17015, 17735, 18197, 18079,
61  18079, 18197, 18725, 18559, 19196, 18559, 18725, 19284,
62  19108, 19692, 19692, 19108, 19284, 21400, 19645, 20262,
63  20214, 20262, 19645, 21400, 22733, 21845, 20867, 20815,
64  20815, 20867, 21845, 22733, 23173, 23173, 21400, 21400,
65  21400, 23173, 23173, 24600, 23764, 22017, 22017, 23764,
66  24600, 25267, 24457, 22672, 24457, 25267, 25971, 25191,
67  25191, 25971, 26715, 27962, 26715, 29642, 29642, 31536,
68 };
69 const int ff_dv_iweight_248[64] = {
70  32768, 17735, 16710, 18079, 18725, 21400, 17735, 19196,
71  19108, 21845, 16384, 17735, 18725, 21400, 16710, 18079,
72  20262, 23173, 18197, 19692, 18725, 20262, 20815, 23764,
73  17735, 19196, 19108, 21845, 20262, 23173, 18197, 19692,
74  21400, 24457, 19284, 20867, 21400, 23173, 22017, 25191,
75  18725, 20262, 20815, 23764, 21400, 24457, 19284, 20867,
76  24457, 27962, 22733, 24600, 25971, 29642, 21400, 23173,
77  22017, 25191, 24457, 27962, 22733, 24600, 25971, 29642,
78 };
79 
80 /**
81  * The "inverse" DV100 weights are actually just the spec weights (zig-zagged).
82  */
83 const int ff_dv_iweight_1080_y[64] = {
84  128, 16, 16, 17, 17, 17, 18, 18,
85  18, 18, 18, 18, 19, 18, 18, 19,
86  19, 19, 19, 19, 19, 42, 38, 40,
87  40, 40, 38, 42, 44, 43, 41, 41,
88  41, 41, 43, 44, 45, 45, 42, 42,
89  42, 45, 45, 48, 46, 43, 43, 46,
90  48, 49, 48, 44, 48, 49, 101, 98,
91  98, 101, 104, 109, 104, 116, 116, 123,
92 };
93 const int ff_dv_iweight_1080_c[64] = {
94  128, 16, 16, 17, 17, 17, 25, 25,
95  25, 25, 26, 25, 26, 25, 26, 26,
96  26, 27, 27, 26, 26, 42, 38, 40,
97  40, 40, 38, 42, 44, 43, 41, 41,
98  41, 41, 43, 44, 91, 91, 84, 84,
99  84, 91, 91, 96, 93, 86, 86, 93,
100  96, 197, 191, 177, 191, 197, 203, 197,
101  197, 203, 209, 219, 209, 232, 232, 246,
102 };
103 const int ff_dv_iweight_720_y[64] = {
104  128, 16, 16, 17, 17, 17, 18, 18,
105  18, 18, 18, 18, 19, 18, 18, 19,
106  19, 19, 19, 19, 19, 42, 38, 40,
107  40, 40, 38, 42, 44, 43, 41, 41,
108  41, 41, 43, 44, 68, 68, 63, 63,
109  63, 68, 68, 96, 92, 86, 86, 92,
110  96, 98, 96, 88, 96, 98, 202, 196,
111  196, 202, 208, 218, 208, 232, 232, 246,
112 };
113 const int ff_dv_iweight_720_c[64] = {
114  128, 24, 24, 26, 26, 26, 36, 36,
115  36, 36, 36, 36, 38, 36, 36, 38,
116  38, 38, 38, 38, 38, 84, 76, 80,
117  80, 80, 76, 84, 88, 86, 82, 82,
118  82, 82, 86, 88, 182, 182, 168, 168,
119  168, 182, 182, 192, 186, 192, 172, 186,
120  192, 394, 382, 354, 382, 394, 406, 394,
121  394, 406, 418, 438, 418, 464, 464, 492,
122 };
123 
124 /*
125  * There's a catch about the following three tables: the mapping they establish
126  * between (run, level) and vlc is not 1-1. So you have to watch out for that
127  * when building misc. tables. E.g. (1, 0) can be either 0x7cf or 0x1f82.
128  */
129 const uint16_t ff_dv_vlc_bits[NB_DV_VLC] = {
130  0x0000, 0x0002, 0x0007, 0x0008, 0x0009, 0x0014, 0x0015, 0x0016,
131  0x0017, 0x0030, 0x0031, 0x0032, 0x0033, 0x0068, 0x0069, 0x006a,
132  0x006b, 0x006c, 0x006d, 0x006e, 0x006f, 0x00e0, 0x00e1, 0x00e2,
133  0x00e3, 0x00e4, 0x00e5, 0x00e6, 0x00e7, 0x00e8, 0x00e9, 0x00ea,
134  0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef, 0x01e0, 0x01e1, 0x01e2,
135  0x01e3, 0x01e4, 0x01e5, 0x01e6, 0x01e7, 0x01e8, 0x01e9, 0x01ea,
136  0x01eb, 0x01ec, 0x01ed, 0x01ee, 0x01ef, 0x03e0, 0x03e1, 0x03e2,
137  0x03e3, 0x03e4, 0x03e5, 0x03e6, 0x07ce, 0x07cf, 0x07d0, 0x07d1,
138  0x07d2, 0x07d3, 0x07d4, 0x07d5, 0x0fac, 0x0fad, 0x0fae, 0x0faf,
139  0x0fb0, 0x0fb1, 0x0fb2, 0x0fb3, 0x0fb4, 0x0fb5, 0x0fb6, 0x0fb7,
140  0x0fb8, 0x0fb9, 0x0fba, 0x0fbb, 0x0fbc, 0x0fbd, 0x0fbe, 0x0fbf,
141  0x1f80, 0x1f81, 0x1f82, 0x1f83, 0x1f84, 0x1f85, 0x1f86, 0x1f87,
142  0x1f88, 0x1f89, 0x1f8a, 0x1f8b, 0x1f8c, 0x1f8d, 0x1f8e, 0x1f8f,
143  0x1f90, 0x1f91, 0x1f92, 0x1f93, 0x1f94, 0x1f95, 0x1f96, 0x1f97,
144  0x1f98, 0x1f99, 0x1f9a, 0x1f9b, 0x1f9c, 0x1f9d, 0x1f9e, 0x1f9f,
145  0x1fa0, 0x1fa1, 0x1fa2, 0x1fa3, 0x1fa4, 0x1fa5, 0x1fa6, 0x1fa7,
146  0x1fa8, 0x1fa9, 0x1faa, 0x1fab, 0x1fac, 0x1fad, 0x1fae, 0x1faf,
147  0x1fb0, 0x1fb1, 0x1fb2, 0x1fb3, 0x1fb4, 0x1fb5, 0x1fb6, 0x1fb7,
148  0x1fb8, 0x1fb9, 0x1fba, 0x1fbb, 0x1fbc, 0x1fbd, 0x1fbe, 0x1fbf,
149  0x7f00, 0x7f01, 0x7f02, 0x7f03, 0x7f04, 0x7f05, 0x7f06, 0x7f07,
150  0x7f08, 0x7f09, 0x7f0a, 0x7f0b, 0x7f0c, 0x7f0d, 0x7f0e, 0x7f0f,
151  0x7f10, 0x7f11, 0x7f12, 0x7f13, 0x7f14, 0x7f15, 0x7f16, 0x7f17,
152  0x7f18, 0x7f19, 0x7f1a, 0x7f1b, 0x7f1c, 0x7f1d, 0x7f1e, 0x7f1f,
153  0x7f20, 0x7f21, 0x7f22, 0x7f23, 0x7f24, 0x7f25, 0x7f26, 0x7f27,
154  0x7f28, 0x7f29, 0x7f2a, 0x7f2b, 0x7f2c, 0x7f2d, 0x7f2e, 0x7f2f,
155  0x7f30, 0x7f31, 0x7f32, 0x7f33, 0x7f34, 0x7f35, 0x7f36, 0x7f37,
156  0x7f38, 0x7f39, 0x7f3a, 0x7f3b, 0x7f3c, 0x7f3d, 0x7f3e, 0x7f3f,
157  0x7f40, 0x7f41, 0x7f42, 0x7f43, 0x7f44, 0x7f45, 0x7f46, 0x7f47,
158  0x7f48, 0x7f49, 0x7f4a, 0x7f4b, 0x7f4c, 0x7f4d, 0x7f4e, 0x7f4f,
159  0x7f50, 0x7f51, 0x7f52, 0x7f53, 0x7f54, 0x7f55, 0x7f56, 0x7f57,
160  0x7f58, 0x7f59, 0x7f5a, 0x7f5b, 0x7f5c, 0x7f5d, 0x7f5e, 0x7f5f,
161  0x7f60, 0x7f61, 0x7f62, 0x7f63, 0x7f64, 0x7f65, 0x7f66, 0x7f67,
162  0x7f68, 0x7f69, 0x7f6a, 0x7f6b, 0x7f6c, 0x7f6d, 0x7f6e, 0x7f6f,
163  0x7f70, 0x7f71, 0x7f72, 0x7f73, 0x7f74, 0x7f75, 0x7f76, 0x7f77,
164  0x7f78, 0x7f79, 0x7f7a, 0x7f7b, 0x7f7c, 0x7f7d, 0x7f7e, 0x7f7f,
165  0x7f80, 0x7f81, 0x7f82, 0x7f83, 0x7f84, 0x7f85, 0x7f86, 0x7f87,
166  0x7f88, 0x7f89, 0x7f8a, 0x7f8b, 0x7f8c, 0x7f8d, 0x7f8e, 0x7f8f,
167  0x7f90, 0x7f91, 0x7f92, 0x7f93, 0x7f94, 0x7f95, 0x7f96, 0x7f97,
168  0x7f98, 0x7f99, 0x7f9a, 0x7f9b, 0x7f9c, 0x7f9d, 0x7f9e, 0x7f9f,
169  0x7fa0, 0x7fa1, 0x7fa2, 0x7fa3, 0x7fa4, 0x7fa5, 0x7fa6, 0x7fa7,
170  0x7fa8, 0x7fa9, 0x7faa, 0x7fab, 0x7fac, 0x7fad, 0x7fae, 0x7faf,
171  0x7fb0, 0x7fb1, 0x7fb2, 0x7fb3, 0x7fb4, 0x7fb5, 0x7fb6, 0x7fb7,
172  0x7fb8, 0x7fb9, 0x7fba, 0x7fbb, 0x7fbc, 0x7fbd, 0x7fbe, 0x7fbf,
173  0x7fc0, 0x7fc1, 0x7fc2, 0x7fc3, 0x7fc4, 0x7fc5, 0x7fc6, 0x7fc7,
174  0x7fc8, 0x7fc9, 0x7fca, 0x7fcb, 0x7fcc, 0x7fcd, 0x7fce, 0x7fcf,
175  0x7fd0, 0x7fd1, 0x7fd2, 0x7fd3, 0x7fd4, 0x7fd5, 0x7fd6, 0x7fd7,
176  0x7fd8, 0x7fd9, 0x7fda, 0x7fdb, 0x7fdc, 0x7fdd, 0x7fde, 0x7fdf,
177  0x7fe0, 0x7fe1, 0x7fe2, 0x7fe3, 0x7fe4, 0x7fe5, 0x7fe6, 0x7fe7,
178  0x7fe8, 0x7fe9, 0x7fea, 0x7feb, 0x7fec, 0x7fed, 0x7fee, 0x7fef,
179  0x7ff0, 0x7ff1, 0x7ff2, 0x7ff3, 0x7ff4, 0x7ff5, 0x7ff6, 0x7ff7,
180  0x7ff8, 0x7ff9, 0x7ffa, 0x7ffb, 0x7ffc, 0x7ffd, 0x7ffe, 0x7fff,
181  0x0006,
182 };
183 
184 const uint8_t ff_dv_vlc_len[NB_DV_VLC] = {
185  2, 3, 4, 4, 4, 5, 5, 5,
186  5, 6, 6, 6, 6, 7, 7, 7,
187  7, 7, 7, 7, 7, 8, 8, 8,
188  8, 8, 8, 8, 8, 8, 8, 8,
189  8, 8, 8, 8, 8, 9, 9, 9,
190  9, 9, 9, 9, 9, 9, 9, 9,
191  9, 9, 9, 9, 9, 10, 10, 10,
192  10, 10, 10, 10, 11, 11, 11, 11,
193  11, 11, 11, 11, 12, 12, 12, 12,
194  12, 12, 12, 12, 12, 12, 12, 12,
195  12, 12, 12, 12, 12, 12, 12, 12,
196  13, 13, 13, 13, 13, 13, 13, 13,
197  13, 13, 13, 13, 13, 13, 13, 13,
198  13, 13, 13, 13, 13, 13, 13, 13,
199  13, 13, 13, 13, 13, 13, 13, 13,
200  13, 13, 13, 13, 13, 13, 13, 13,
201  13, 13, 13, 13, 13, 13, 13, 13,
202  13, 13, 13, 13, 13, 13, 13, 13,
203  13, 13, 13, 13, 13, 13, 13, 13,
204  15, 15, 15, 15, 15, 15, 15, 15,
205  15, 15, 15, 15, 15, 15, 15, 15,
206  15, 15, 15, 15, 15, 15, 15, 15,
207  15, 15, 15, 15, 15, 15, 15, 15,
208  15, 15, 15, 15, 15, 15, 15, 15,
209  15, 15, 15, 15, 15, 15, 15, 15,
210  15, 15, 15, 15, 15, 15, 15, 15,
211  15, 15, 15, 15, 15, 15, 15, 15,
212  15, 15, 15, 15, 15, 15, 15, 15,
213  15, 15, 15, 15, 15, 15, 15, 15,
214  15, 15, 15, 15, 15, 15, 15, 15,
215  15, 15, 15, 15, 15, 15, 15, 15,
216  15, 15, 15, 15, 15, 15, 15, 15,
217  15, 15, 15, 15, 15, 15, 15, 15,
218  15, 15, 15, 15, 15, 15, 15, 15,
219  15, 15, 15, 15, 15, 15, 15, 15,
220  15, 15, 15, 15, 15, 15, 15, 15,
221  15, 15, 15, 15, 15, 15, 15, 15,
222  15, 15, 15, 15, 15, 15, 15, 15,
223  15, 15, 15, 15, 15, 15, 15, 15,
224  15, 15, 15, 15, 15, 15, 15, 15,
225  15, 15, 15, 15, 15, 15, 15, 15,
226  15, 15, 15, 15, 15, 15, 15, 15,
227  15, 15, 15, 15, 15, 15, 15, 15,
228  15, 15, 15, 15, 15, 15, 15, 15,
229  15, 15, 15, 15, 15, 15, 15, 15,
230  15, 15, 15, 15, 15, 15, 15, 15,
231  15, 15, 15, 15, 15, 15, 15, 15,
232  15, 15, 15, 15, 15, 15, 15, 15,
233  15, 15, 15, 15, 15, 15, 15, 15,
234  15, 15, 15, 15, 15, 15, 15, 15,
235  15, 15, 15, 15, 15, 15, 15, 15,
236  4,
237 };
238 
239 const uint8_t ff_dv_vlc_run[NB_DV_VLC] = {
240  0, 0, 1, 0, 0, 2, 1, 0,
241  0, 3, 4, 0, 0, 5, 6, 2,
242  1, 1, 0, 0, 0, 7, 8, 9,
243  10, 3, 4, 2, 1, 1, 1, 0,
244  0, 0, 0, 0, 0, 11, 12, 13,
245  14, 5, 6, 3, 4, 2, 2, 1,
246  0, 0, 0, 0, 0, 5, 3, 3,
247  2, 1, 1, 1, 0, 1, 6, 4,
248  3, 1, 1, 1, 2, 3, 4, 5,
249  7, 8, 9, 10, 7, 8, 4, 3,
250  2, 2, 2, 2, 2, 1, 1, 1,
251  0, 1, 2, 3, 4, 5, 6, 7,
252  8, 9, 10, 11, 12, 13, 14, 15,
253  16, 17, 18, 19, 20, 21, 22, 23,
254  24, 25, 26, 27, 28, 29, 30, 31,
255  32, 33, 34, 35, 36, 37, 38, 39,
256  40, 41, 42, 43, 44, 45, 46, 47,
257  48, 49, 50, 51, 52, 53, 54, 55,
258  56, 57, 58, 59, 60, 61, 62, 63,
259  0, 0, 0, 0, 0, 0, 0, 0,
260  0, 0, 0, 0, 0, 0, 0, 0,
261  0, 0, 0, 0, 0, 0, 0, 0,
262  0, 0, 0, 0, 0, 0, 0, 0,
263  0, 0, 0, 0, 0, 0, 0, 0,
264  0, 0, 0, 0, 0, 0, 0, 0,
265  0, 0, 0, 0, 0, 0, 0, 0,
266  0, 0, 0, 0, 0, 0, 0, 0,
267  0, 0, 0, 0, 0, 0, 0, 0,
268  0, 0, 0, 0, 0, 0, 0, 0,
269  0, 0, 0, 0, 0, 0, 0, 0,
270  0, 0, 0, 0, 0, 0, 0, 0,
271  0, 0, 0, 0, 0, 0, 0, 0,
272  0, 0, 0, 0, 0, 0, 0, 0,
273  0, 0, 0, 0, 0, 0, 0, 0,
274  0, 0, 0, 0, 0, 0, 0, 0,
275  0, 0, 0, 0, 0, 0, 0, 0,
276  0, 0, 0, 0, 0, 0, 0, 0,
277  0, 0, 0, 0, 0, 0, 0, 0,
278  0, 0, 0, 0, 0, 0, 0, 0,
279  0, 0, 0, 0, 0, 0, 0, 0,
280  0, 0, 0, 0, 0, 0, 0, 0,
281  0, 0, 0, 0, 0, 0, 0, 0,
282  0, 0, 0, 0, 0, 0, 0, 0,
283  0, 0, 0, 0, 0, 0, 0, 0,
284  0, 0, 0, 0, 0, 0, 0, 0,
285  0, 0, 0, 0, 0, 0, 0, 0,
286  0, 0, 0, 0, 0, 0, 0, 0,
287  0, 0, 0, 0, 0, 0, 0, 0,
288  0, 0, 0, 0, 0, 0, 0, 0,
289  0, 0, 0, 0, 0, 0, 0, 0,
290  0, 0, 0, 0, 0, 0, 0, 0,
291 127,
292 };
293 
294 const uint8_t ff_dv_vlc_level[NB_DV_VLC] = {
295  1, 2, 1, 3, 4, 1, 2, 5,
296  6, 1, 1, 7, 8, 1, 1, 2,
297  3, 4, 9, 10, 11, 1, 1, 1,
298  1, 2, 2, 3, 5, 6, 7, 12,
299  13, 14, 15, 16, 17, 1, 1, 1,
300  1, 2, 2, 3, 3, 4, 5, 8,
301  18, 19, 20, 21, 22, 3, 4, 5,
302  6, 9, 10, 11, 0, 0, 3, 4,
303  6, 12, 13, 14, 0, 0, 0, 0,
304  2, 2, 2, 2, 3, 3, 5, 7,
305  7, 8, 9, 10, 11, 15, 16, 17,
306  0, 0, 0, 0, 0, 0, 0, 0,
307  0, 0, 0, 0, 0, 0, 0, 0,
308  0, 0, 0, 0, 0, 0, 0, 0,
309  0, 0, 0, 0, 0, 0, 0, 0,
310  0, 0, 0, 0, 0, 0, 0, 0,
311  0, 0, 0, 0, 0, 0, 0, 0,
312  0, 0, 0, 0, 0, 0, 0, 0,
313  0, 0, 0, 0, 0, 0, 0, 0,
314  0, 1, 2, 3, 4, 5, 6, 7,
315  8, 9, 10, 11, 12, 13, 14, 15,
316  16, 17, 18, 19, 20, 21, 22, 23,
317  24, 25, 26, 27, 28, 29, 30, 31,
318  32, 33, 34, 35, 36, 37, 38, 39,
319  40, 41, 42, 43, 44, 45, 46, 47,
320  48, 49, 50, 51, 52, 53, 54, 55,
321  56, 57, 58, 59, 60, 61, 62, 63,
322  64, 65, 66, 67, 68, 69, 70, 71,
323  72, 73, 74, 75, 76, 77, 78, 79,
324  80, 81, 82, 83, 84, 85, 86, 87,
325  88, 89, 90, 91, 92, 93, 94, 95,
326  96, 97, 98, 99, 100, 101, 102, 103,
327  104, 105, 106, 107, 108, 109, 110, 111,
328  112, 113, 114, 115, 116, 117, 118, 119,
329  120, 121, 122, 123, 124, 125, 126, 127,
330  128, 129, 130, 131, 132, 133, 134, 135,
331  136, 137, 138, 139, 140, 141, 142, 143,
332  144, 145, 146, 147, 148, 149, 150, 151,
333  152, 153, 154, 155, 156, 157, 158, 159,
334  160, 161, 162, 163, 164, 165, 166, 167,
335  168, 169, 170, 171, 172, 173, 174, 175,
336  176, 177, 178, 179, 180, 181, 182, 183,
337  184, 185, 186, 187, 188, 189, 190, 191,
338  192, 193, 194, 195, 196, 197, 198, 199,
339  200, 201, 202, 203, 204, 205, 206, 207,
340  208, 209, 210, 211, 212, 213, 214, 215,
341  216, 217, 218, 219, 220, 221, 222, 223,
342  224, 225, 226, 227, 228, 229, 230, 231,
343  232, 233, 234, 235, 236, 237, 238, 239,
344  240, 241, 242, 243, 244, 245, 246, 247,
345  248, 249, 250, 251, 252, 253, 254, 255,
346  0,
347 };
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