2 * VP8 compatible video decoder
4 * Copyright (C) 2010 David Conrad
5 * Copyright (C) 2010 Ronald S. Bultje
7 * This file is part of FFmpeg.
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 // TODO: move these #define and enum to a better header...
26 #define VP8_MAX_QUANT 127
47 // used to signal 4x4 intra pred in luma MBs
51 VP8_MVMODE_NEAREST = MODE_I4x4 + 1,
58 enum inter_submvmode {
59 VP8_SUBMVMODE_LEFT4X4,
61 VP8_SUBMVMODE_ZERO4X4,
65 enum inter_splitmvmode {
66 VP8_SPLITMVMODE_16x8 = 0, ///< 2 16x8 blocks (vertical)
67 VP8_SPLITMVMODE_8x16, ///< 2 8x16 blocks (horizontal)
68 VP8_SPLITMVMODE_8x8, ///< 2x2 blocks of 8x8px each
69 VP8_SPLITMVMODE_4x4, ///< 4x4 blocks of 4x4px each
70 VP8_SPLITMVMODE_NONE, ///< (only used in prediction) no split MVs
73 static const uint8_t vp8_pred4x4_mode[] =
75 [DC_PRED8x8] = DC_PRED,
76 [VERT_PRED8x8] = VERT_PRED,
77 [HOR_PRED8x8] = HOR_PRED,
78 [PLANE_PRED8x8] = TM_VP8_PRED,
81 static const int8_t vp8_pred16x16_tree_intra[4][2] =
83 { -MODE_I4x4, 1 }, // '0'
85 { -DC_PRED8x8, -VERT_PRED8x8 }, // '100', '101'
86 { -HOR_PRED8x8, -PLANE_PRED8x8 }, // '110', '111'
89 static const int8_t vp8_pred16x16_tree_inter[4][2] =
91 { -DC_PRED8x8, 1 }, // '0'
93 { -VERT_PRED8x8, -HOR_PRED8x8 }, // '100', '101'
94 { -PLANE_PRED8x8, -MODE_I4x4 }, // '110', '111'
97 static const int vp8_mode_contexts[6][4] = {
102 { 159, 134, 128, 34 },
103 { 234, 188, 128, 28 },
106 static const int8_t vp8_pred16x16_tree_mvinter[4][2] = {
107 { -VP8_MVMODE_ZERO, 1 }, // '0'
108 { -VP8_MVMODE_NEAREST, 2 }, // '10'
109 { -VP8_MVMODE_NEAR, 3 }, // '110'
110 { -VP8_MVMODE_NEW, -VP8_MVMODE_SPLIT } // '1110', '1111'
113 static const uint8_t vp8_mbsplits[5][16] = {
114 { 0, 0, 0, 0, 0, 0, 0, 0,
115 1, 1, 1, 1, 1, 1, 1, 1 },
116 { 0, 0, 1, 1, 0, 0, 1, 1,
117 0, 0, 1, 1, 0, 0, 1, 1 },
118 { 0, 0, 1, 1, 0, 0, 1, 1,
119 2, 2, 3, 3, 2, 2, 3, 3 },
120 { 0, 1, 2, 3, 4, 5, 6, 7,
121 8, 9, 10, 11, 12, 13, 14, 15 },
122 { 0, 0, 0, 0, 0, 0, 0, 0,
123 0, 0, 0, 0, 0, 0, 0, 0 }
126 static const uint8_t vp8_mbfirstidx[4][16] = {
127 { 0, 8 }, { 0, 2 }, { 0, 2, 8, 10 },
128 { 0, 1, 2, 3, 4, 5, 6, 7,
129 8, 9, 10, 11, 12, 13, 14, 15 }
132 static const int8_t vp8_mbsplit_tree[3][2] = {
133 { -VP8_SPLITMVMODE_4x4, 1 }, // '0' - 16 individual MVs
134 { -VP8_SPLITMVMODE_8x8, 2 }, // '10' - quarter-based MVs
135 { -VP8_SPLITMVMODE_16x8, // '110' - top/bottom MVs
136 -VP8_SPLITMVMODE_8x16 } // '111' - left/right MVs
138 static const uint8_t vp8_mbsplit_count[4] = { 2, 2, 4, 16 };
139 static const uint8_t vp8_mbsplit_prob[3] = { 110, 111, 150 };
141 static const uint8_t vp8_submv_prob[5][3] = {
149 static const int8_t vp8_submv_ref_tree[3][2] = {
150 { -VP8_SUBMVMODE_LEFT4X4, 1 }, // '0'
151 { -VP8_SUBMVMODE_TOP4X4, 2 }, // '10'
152 { -VP8_SUBMVMODE_ZERO4X4, -VP8_SUBMVMODE_NEW4X4 } // '110', '111'
155 static const uint8_t vp8_pred16x16_prob_intra[4] = { 145, 156, 163, 128 };
156 static const uint8_t vp8_pred16x16_prob_inter[4] = { 112, 86, 140, 37 };
158 static const int8_t vp8_pred4x4_tree[9][2] =
160 { -DC_PRED, 1 }, // '0'
161 { -TM_VP8_PRED, 2 }, // '10'
162 { -VERT_PRED, 3 }, // '110'
164 { -HOR_PRED, 5 }, // '11100'
165 { -DIAG_DOWN_RIGHT_PRED, -VERT_RIGHT_PRED }, // '111010', '111011'
166 { -DIAG_DOWN_LEFT_PRED, 7 }, // '11110'
167 { -VERT_LEFT_PRED, 8 }, // '111110'
168 { -HOR_DOWN_PRED, -HOR_UP_PRED }, // '1111110', '1111111'
171 static const int8_t vp8_pred8x8c_tree[3][2] =
173 { -DC_PRED8x8, 1 }, // '0'
174 { -VERT_PRED8x8, 2 }, // '10
175 { -HOR_PRED8x8, -PLANE_PRED8x8 }, // '110', '111'
178 static const uint8_t vp8_pred8x8c_prob_intra[3] = { 142, 114, 183 };
179 static const uint8_t vp8_pred8x8c_prob_inter[3] = { 162, 101, 204 };
181 static const uint8_t vp8_pred4x4_prob_inter[9] =
183 120, 90, 79, 133, 87, 85, 80, 111, 151
186 static const uint8_t vp8_pred4x4_prob_intra[10][10][9] =
189 { 39, 53, 200, 87, 26, 21, 43, 232, 171 },
190 { 56, 34, 51, 104, 114, 102, 29, 93, 77 },
191 { 88, 88, 147, 150, 42, 46, 45, 196, 205 },
192 { 107, 54, 32, 26, 51, 1, 81, 43, 31 },
193 { 39, 28, 85, 171, 58, 165, 90, 98, 64 },
194 { 34, 22, 116, 206, 23, 34, 43, 166, 73 },
195 { 34, 19, 21, 102, 132, 188, 16, 76, 124 },
196 { 68, 25, 106, 22, 64, 171, 36, 225, 114 },
197 { 62, 18, 78, 95, 85, 57, 50, 48, 51 },
198 { 43, 97, 183, 117, 85, 38, 35, 179, 61 },
201 { 112, 113, 77, 85, 179, 255, 38, 120, 114 },
202 { 40, 42, 1, 196, 245, 209, 10, 25, 109 },
203 { 193, 101, 35, 159, 215, 111, 89, 46, 111 },
204 { 100, 80, 8, 43, 154, 1, 51, 26, 71 },
205 { 88, 43, 29, 140, 166, 213, 37, 43, 154 },
206 { 61, 63, 30, 155, 67, 45, 68, 1, 209 },
207 { 41, 40, 5, 102, 211, 183, 4, 1, 221 },
208 { 142, 78, 78, 16, 255, 128, 34, 197, 171 },
209 { 51, 50, 17, 168, 209, 192, 23, 25, 82 },
210 { 60, 148, 31, 172, 219, 228, 21, 18, 111 },
213 { 175, 69, 143, 80, 85, 82, 72, 155, 103 },
214 { 56, 58, 10, 171, 218, 189, 17, 13, 152 },
215 { 231, 120, 48, 89, 115, 113, 120, 152, 112 },
216 { 144, 71, 10, 38, 171, 213, 144, 34, 26 },
217 { 114, 26, 17, 163, 44, 195, 21, 10, 173 },
218 { 121, 24, 80, 195, 26, 62, 44, 64, 85 },
219 { 63, 20, 8, 114, 114, 208, 12, 9, 226 },
220 { 170, 46, 55, 19, 136, 160, 33, 206, 71 },
221 { 81, 40, 11, 96, 182, 84, 29, 16, 36 },
222 { 152, 179, 64, 126, 170, 118, 46, 70, 95 },
225 { 75, 79, 123, 47, 51, 128, 81, 171, 1 },
226 { 57, 17, 5, 71, 102, 57, 53, 41, 49 },
227 { 125, 98, 42, 88, 104, 85, 117, 175, 82 },
228 { 115, 21, 2, 10, 102, 255, 166, 23, 6 },
229 { 38, 33, 13, 121, 57, 73, 26, 1, 85 },
230 { 41, 10, 67, 138, 77, 110, 90, 47, 114 },
231 { 57, 18, 10, 102, 102, 213, 34, 20, 43 },
232 { 101, 29, 16, 10, 85, 128, 101, 196, 26 },
233 { 117, 20, 15, 36, 163, 128, 68, 1, 26 },
234 { 95, 84, 53, 89, 128, 100, 113, 101, 45 },
237 { 63, 59, 90, 180, 59, 166, 93, 73, 154 },
238 { 40, 40, 21, 116, 143, 209, 34, 39, 175 },
239 { 138, 31, 36, 171, 27, 166, 38, 44, 229 },
240 { 57, 46, 22, 24, 128, 1, 54, 17, 37 },
241 { 47, 15, 16, 183, 34, 223, 49, 45, 183 },
242 { 46, 17, 33, 183, 6, 98, 15, 32, 183 },
243 { 40, 3, 9, 115, 51, 192, 18, 6, 223 },
244 { 65, 32, 73, 115, 28, 128, 23, 128, 205 },
245 { 87, 37, 9, 115, 59, 77, 64, 21, 47 },
246 { 67, 87, 58, 169, 82, 115, 26, 59, 179 },
249 { 54, 57, 112, 184, 5, 41, 38, 166, 213 },
250 { 30, 34, 26, 133, 152, 116, 10, 32, 134 },
251 { 104, 55, 44, 218, 9, 54, 53, 130, 226 },
252 { 75, 32, 12, 51, 192, 255, 160, 43, 51 },
253 { 39, 19, 53, 221, 26, 114, 32, 73, 255 },
254 { 31, 9, 65, 234, 2, 15, 1, 118, 73 },
255 { 56, 21, 23, 111, 59, 205, 45, 37, 192 },
256 { 88, 31, 35, 67, 102, 85, 55, 186, 85 },
257 { 55, 38, 70, 124, 73, 102, 1, 34, 98 },
258 { 64, 90, 70, 205, 40, 41, 23, 26, 57 },
261 { 86, 40, 64, 135, 148, 224, 45, 183, 128 },
262 { 22, 26, 17, 131, 240, 154, 14, 1, 209 },
263 { 164, 50, 31, 137, 154, 133, 25, 35, 218 },
264 { 83, 12, 13, 54, 192, 255, 68, 47, 28 },
265 { 45, 16, 21, 91, 64, 222, 7, 1, 197 },
266 { 56, 21, 39, 155, 60, 138, 23, 102, 213 },
267 { 18, 11, 7, 63, 144, 171, 4, 4, 246 },
268 { 85, 26, 85, 85, 128, 128, 32, 146, 171 },
269 { 35, 27, 10, 146, 174, 171, 12, 26, 128 },
270 { 51, 103, 44, 131, 131, 123, 31, 6, 158 },
273 { 68, 45, 128, 34, 1, 47, 11, 245, 171 },
274 { 62, 17, 19, 70, 146, 85, 55, 62, 70 },
275 { 102, 61, 71, 37, 34, 53, 31, 243, 192 },
276 { 75, 15, 9, 9, 64, 255, 184, 119, 16 },
277 { 37, 43, 37, 154, 100, 163, 85, 160, 1 },
278 { 63, 9, 92, 136, 28, 64, 32, 201, 85 },
279 { 56, 8, 17, 132, 137, 255, 55, 116, 128 },
280 { 86, 6, 28, 5, 64, 255, 25, 248, 1 },
281 { 58, 15, 20, 82, 135, 57, 26, 121, 40 },
282 { 69, 60, 71, 38, 73, 119, 28, 222, 37 },
285 { 101, 75, 128, 139, 118, 146, 116, 128, 85 },
286 { 56, 41, 15, 176, 236, 85, 37, 9, 62 },
287 { 190, 80, 35, 99, 180, 80, 126, 54, 45 },
288 { 146, 36, 19, 30, 171, 255, 97, 27, 20 },
289 { 71, 30, 17, 119, 118, 255, 17, 18, 138 },
290 { 101, 38, 60, 138, 55, 70, 43, 26, 142 },
291 { 32, 41, 20, 117, 151, 142, 20, 21, 163 },
292 { 138, 45, 61, 62, 219, 1, 81, 188, 64 },
293 { 112, 19, 12, 61, 195, 128, 48, 4, 24 },
294 { 85, 126, 47, 87, 176, 51, 41, 20, 32 },
297 { 66, 102, 167, 99, 74, 62, 40, 234, 128 },
298 { 41, 53, 9, 178, 241, 141, 26, 8, 107 },
299 { 134, 183, 89, 137, 98, 101, 106, 165, 148 },
300 { 104, 79, 12, 27, 217, 255, 87, 17, 7 },
301 { 74, 43, 26, 146, 73, 166, 49, 23, 157 },
302 { 65, 38, 105, 160, 51, 52, 31, 115, 128 },
303 { 47, 41, 14, 110, 182, 183, 21, 17, 194 },
304 { 87, 68, 71, 44, 114, 51, 15, 186, 23 },
305 { 66, 45, 25, 102, 197, 189, 23, 18, 22 },
306 { 72, 187, 100, 130, 157, 111, 32, 75, 80 },
310 static const int8_t vp8_segmentid_tree[][2] =
313 { -0, -1 }, // '00', '01'
314 { -2, -3 }, // '10', '11'
317 static const uint8_t vp8_coeff_band[16] =
319 0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7
322 static const uint8_t vp8_dct_cat1_prob[] = { 159, 0 };
323 static const uint8_t vp8_dct_cat2_prob[] = { 165, 145, 0 };
324 static const uint8_t vp8_dct_cat3_prob[] = { 173, 148, 140, 0 };
325 static const uint8_t vp8_dct_cat4_prob[] = { 176, 155, 140, 135, 0 };
326 static const uint8_t vp8_dct_cat5_prob[] = { 180, 157, 141, 134, 130, 0 };
327 static const uint8_t vp8_dct_cat6_prob[] = { 254, 254, 243, 230, 196, 177, 153, 140, 133, 130, 129, 0 };
329 // only used for cat3 and above; cat 1 and 2 are referenced directly
330 static const uint8_t * const vp8_dct_cat_prob[] =
338 static const uint8_t vp8_token_default_probs[4][8][3][NUM_DCT_TOKENS-1] =
342 { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
343 { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
344 { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
347 { 253, 136, 254, 255, 228, 219, 128, 128, 128, 128, 128 },
348 { 189, 129, 242, 255, 227, 213, 255, 219, 128, 128, 128 },
349 { 106, 126, 227, 252, 214, 209, 255, 255, 128, 128, 128 },
352 { 1, 98, 248, 255, 236, 226, 255, 255, 128, 128, 128 },
353 { 181, 133, 238, 254, 221, 234, 255, 154, 128, 128, 128 },
354 { 78, 134, 202, 247, 198, 180, 255, 219, 128, 128, 128 },
357 { 1, 185, 249, 255, 243, 255, 128, 128, 128, 128, 128 },
358 { 184, 150, 247, 255, 236, 224, 128, 128, 128, 128, 128 },
359 { 77, 110, 216, 255, 236, 230, 128, 128, 128, 128, 128 },
362 { 1, 101, 251, 255, 241, 255, 128, 128, 128, 128, 128 },
363 { 170, 139, 241, 252, 236, 209, 255, 255, 128, 128, 128 },
364 { 37, 116, 196, 243, 228, 255, 255, 255, 128, 128, 128 },
367 { 1, 204, 254, 255, 245, 255, 128, 128, 128, 128, 128 },
368 { 207, 160, 250, 255, 238, 128, 128, 128, 128, 128, 128 },
369 { 102, 103, 231, 255, 211, 171, 128, 128, 128, 128, 128 },
372 { 1, 152, 252, 255, 240, 255, 128, 128, 128, 128, 128 },
373 { 177, 135, 243, 255, 234, 225, 128, 128, 128, 128, 128 },
374 { 80, 129, 211, 255, 194, 224, 128, 128, 128, 128, 128 },
377 { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
378 { 246, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
379 { 255, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
384 { 198, 35, 237, 223, 193, 187, 162, 160, 145, 155, 62 },
385 { 131, 45, 198, 221, 172, 176, 220, 157, 252, 221, 1 },
386 { 68, 47, 146, 208, 149, 167, 221, 162, 255, 223, 128 },
389 { 1, 149, 241, 255, 221, 224, 255, 255, 128, 128, 128 },
390 { 184, 141, 234, 253, 222, 220, 255, 199, 128, 128, 128 },
391 { 81, 99, 181, 242, 176, 190, 249, 202, 255, 255, 128 },
394 { 1, 129, 232, 253, 214, 197, 242, 196, 255, 255, 128 },
395 { 99, 121, 210, 250, 201, 198, 255, 202, 128, 128, 128 },
396 { 23, 91, 163, 242, 170, 187, 247, 210, 255, 255, 128 },
399 { 1, 200, 246, 255, 234, 255, 128, 128, 128, 128, 128 },
400 { 109, 178, 241, 255, 231, 245, 255, 255, 128, 128, 128 },
401 { 44, 130, 201, 253, 205, 192, 255, 255, 128, 128, 128 },
404 { 1, 132, 239, 251, 219, 209, 255, 165, 128, 128, 128 },
405 { 94, 136, 225, 251, 218, 190, 255, 255, 128, 128, 128 },
406 { 22, 100, 174, 245, 186, 161, 255, 199, 128, 128, 128 },
409 { 1, 182, 249, 255, 232, 235, 128, 128, 128, 128, 128 },
410 { 124, 143, 241, 255, 227, 234, 128, 128, 128, 128, 128 },
411 { 35, 77, 181, 251, 193, 211, 255, 205, 128, 128, 128 },
414 { 1, 157, 247, 255, 236, 231, 255, 255, 128, 128, 128 },
415 { 121, 141, 235, 255, 225, 227, 255, 255, 128, 128, 128 },
416 { 45, 99, 188, 251, 195, 217, 255, 224, 128, 128, 128 },
419 { 1, 1, 251, 255, 213, 255, 128, 128, 128, 128, 128 },
420 { 203, 1, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
421 { 137, 1, 177, 255, 224, 255, 128, 128, 128, 128, 128 },
426 { 253, 9, 248, 251, 207, 208, 255, 192, 128, 128, 128 },
427 { 175, 13, 224, 243, 193, 185, 249, 198, 255, 255, 128 },
428 { 73, 17, 171, 221, 161, 179, 236, 167, 255, 234, 128 },
431 { 1, 95, 247, 253, 212, 183, 255, 255, 128, 128, 128 },
432 { 239, 90, 244, 250, 211, 209, 255, 255, 128, 128, 128 },
433 { 155, 77, 195, 248, 188, 195, 255, 255, 128, 128, 128 },
436 { 1, 24, 239, 251, 218, 219, 255, 205, 128, 128, 128 },
437 { 201, 51, 219, 255, 196, 186, 128, 128, 128, 128, 128 },
438 { 69, 46, 190, 239, 201, 218, 255, 228, 128, 128, 128 },
441 { 1, 191, 251, 255, 255, 128, 128, 128, 128, 128, 128 },
442 { 223, 165, 249, 255, 213, 255, 128, 128, 128, 128, 128 },
443 { 141, 124, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
446 { 1, 16, 248, 255, 255, 128, 128, 128, 128, 128, 128 },
447 { 190, 36, 230, 255, 236, 255, 128, 128, 128, 128, 128 },
448 { 149, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
451 { 1, 226, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
452 { 247, 192, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
453 { 240, 128, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
456 { 1, 134, 252, 255, 255, 128, 128, 128, 128, 128, 128 },
457 { 213, 62, 250, 255, 255, 128, 128, 128, 128, 128, 128 },
458 { 55, 93, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
461 { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
462 { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
463 { 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 },
468 { 202, 24, 213, 235, 186, 191, 220, 160, 240, 175, 255 },
469 { 126, 38, 182, 232, 169, 184, 228, 174, 255, 187, 128 },
470 { 61, 46, 138, 219, 151, 178, 240, 170, 255, 216, 128 },
473 { 1, 112, 230, 250, 199, 191, 247, 159, 255, 255, 128 },
474 { 166, 109, 228, 252, 211, 215, 255, 174, 128, 128, 128 },
475 { 39, 77, 162, 232, 172, 180, 245, 178, 255, 255, 128 },
478 { 1, 52, 220, 246, 198, 199, 249, 220, 255, 255, 128 },
479 { 124, 74, 191, 243, 183, 193, 250, 221, 255, 255, 128 },
480 { 24, 71, 130, 219, 154, 170, 243, 182, 255, 255, 128 },
483 { 1, 182, 225, 249, 219, 240, 255, 224, 128, 128, 128 },
484 { 149, 150, 226, 252, 216, 205, 255, 171, 128, 128, 128 },
485 { 28, 108, 170, 242, 183, 194, 254, 223, 255, 255, 128 },
488 { 1, 81, 230, 252, 204, 203, 255, 192, 128, 128, 128 },
489 { 123, 102, 209, 247, 188, 196, 255, 233, 128, 128, 128 },
490 { 20, 95, 153, 243, 164, 173, 255, 203, 128, 128, 128 },
493 { 1, 222, 248, 255, 216, 213, 128, 128, 128, 128, 128 },
494 { 168, 175, 246, 252, 235, 205, 255, 255, 128, 128, 128 },
495 { 47, 116, 215, 255, 211, 212, 255, 255, 128, 128, 128 },
498 { 1, 121, 236, 253, 212, 214, 255, 255, 128, 128, 128 },
499 { 141, 84, 213, 252, 201, 202, 255, 219, 128, 128, 128 },
500 { 42, 80, 160, 240, 162, 185, 255, 205, 128, 128, 128 },
503 { 1, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
504 { 244, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
505 { 238, 1, 255, 128, 128, 128, 128, 128, 128, 128, 128 },
510 static const uint8_t vp8_token_update_probs[4][8][3][NUM_DCT_TOKENS-1] =
514 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
515 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
516 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
519 { 176, 246, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
520 { 223, 241, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
521 { 249, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
524 { 255, 244, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
525 { 234, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
526 { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
529 { 255, 246, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
530 { 239, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
531 { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
534 { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
535 { 251, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
536 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
539 { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
540 { 251, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
541 { 254, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
544 { 255, 254, 253, 255, 254, 255, 255, 255, 255, 255, 255 },
545 { 250, 255, 254, 255, 254, 255, 255, 255, 255, 255, 255 },
546 { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
549 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
550 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
551 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
556 { 217, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
557 { 225, 252, 241, 253, 255, 255, 254, 255, 255, 255, 255 },
558 { 234, 250, 241, 250, 253, 255, 253, 254, 255, 255, 255 },
561 { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
562 { 223, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
563 { 238, 253, 254, 254, 255, 255, 255, 255, 255, 255, 255 },
566 { 255, 248, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
567 { 249, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
568 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
571 { 255, 253, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
572 { 247, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
573 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
576 { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
577 { 252, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
578 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
581 { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
582 { 253, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
583 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
586 { 255, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
587 { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
588 { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
591 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
592 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
593 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
598 { 186, 251, 250, 255, 255, 255, 255, 255, 255, 255, 255 },
599 { 234, 251, 244, 254, 255, 255, 255, 255, 255, 255, 255 },
600 { 251, 251, 243, 253, 254, 255, 254, 255, 255, 255, 255 },
603 { 255, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
604 { 236, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
605 { 251, 253, 253, 254, 254, 255, 255, 255, 255, 255, 255 },
608 { 255, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
609 { 254, 254, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
610 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
613 { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
614 { 254, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
615 { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
618 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
619 { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
620 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
623 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
624 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
625 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
628 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
629 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
630 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
633 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
634 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
635 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
640 { 248, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
641 { 250, 254, 252, 254, 255, 255, 255, 255, 255, 255, 255 },
642 { 248, 254, 249, 253, 255, 255, 255, 255, 255, 255, 255 },
645 { 255, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
646 { 246, 253, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
647 { 252, 254, 251, 254, 254, 255, 255, 255, 255, 255, 255 },
650 { 255, 254, 252, 255, 255, 255, 255, 255, 255, 255, 255 },
651 { 248, 254, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
652 { 253, 255, 254, 254, 255, 255, 255, 255, 255, 255, 255 },
655 { 255, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
656 { 245, 251, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
657 { 253, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
660 { 255, 251, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
661 { 252, 253, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
662 { 255, 254, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
665 { 255, 252, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
666 { 249, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
667 { 255, 255, 254, 255, 255, 255, 255, 255, 255, 255, 255 },
670 { 255, 255, 253, 255, 255, 255, 255, 255, 255, 255, 255 },
671 { 250, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
672 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
675 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
676 { 254, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
677 { 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255 },
682 // fixme: copied from h264data.h
683 static const uint8_t zigzag_scan[16]={
684 0+0*4, 1+0*4, 0+1*4, 0+2*4,
685 1+1*4, 2+0*4, 3+0*4, 2+1*4,
686 1+2*4, 0+3*4, 1+3*4, 2+2*4,
687 3+1*4, 3+2*4, 2+3*4, 3+3*4,
690 static const uint8_t vp8_dc_qlookup[VP8_MAX_QUANT+1] =
692 4, 5, 6, 7, 8, 9, 10, 10, 11, 12, 13, 14, 15, 16, 17, 17,
693 18, 19, 20, 20, 21, 21, 22, 22, 23, 23, 24, 25, 25, 26, 27, 28,
694 29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41, 42, 43,
695 44, 45, 46, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58,
696 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74,
697 75, 76, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89,
698 91, 93, 95, 96, 98, 100, 101, 102, 104, 106, 108, 110, 112, 114, 116, 118,
699 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 143, 145, 148, 151, 154, 157,
702 static const uint16_t vp8_ac_qlookup[VP8_MAX_QUANT+1] =
704 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
705 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
706 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
707 52, 53, 54, 55, 56, 57, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76,
708 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108,
709 110, 112, 114, 116, 119, 122, 125, 128, 131, 134, 137, 140, 143, 146, 149, 152,
710 155, 158, 161, 164, 167, 170, 173, 177, 181, 185, 189, 193, 197, 201, 205, 209,
711 213, 217, 221, 225, 229, 234, 239, 245, 249, 254, 259, 264, 269, 274, 279, 284,
714 static const uint8_t vp8_mv_update_prob[2][19] = {
717 253, 253, 254, 254, 254, 254, 254,
718 254, 254, 254, 254, 254, 250, 250, 252, 254, 254 },
721 245, 253, 254, 254, 254, 254, 254,
722 254, 254, 254, 254, 254, 251, 251, 254, 254, 254 }
725 static const uint8_t vp8_mv_default_prob[2][19] = {
728 225, 146, 172, 147, 214, 39, 156,
729 128, 129, 132, 75, 145, 178, 206, 239, 254, 254 },
732 204, 170, 119, 235, 140, 230, 228,
733 128, 130, 130, 74, 148, 180, 203, 236, 254, 254 }