The Tor Browser / file comparison
comparison: media/libvpx/vp9/encoder/vp9_boolhuff.c
media/libvpx/vp9/encoder/vp9_boolhuff.c
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:7ac4556896ec |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include <assert.h> | |
| 12 #include "vp9/encoder/vp9_boolhuff.h" | |
| 13 #include "vp9/common/vp9_entropy.h" | |
| 14 | |
| 15 #if defined(SECTIONBITS_OUTPUT) | |
| 16 unsigned __int64 Sectionbits[500]; | |
| 17 | |
| 18 #endif | |
| 19 | |
| 20 #ifdef ENTROPY_STATS | |
| 21 unsigned int active_section = 0; | |
| 22 #endif | |
| 23 | |
| 24 const unsigned int vp9_prob_cost[256] = { | |
| 25 2047, 2047, 1791, 1641, 1535, 1452, 1385, 1328, 1279, 1235, 1196, 1161, | |
| 26 1129, 1099, 1072, 1046, 1023, 1000, 979, 959, 940, 922, 905, 889, | |
| 27 873, 858, 843, 829, 816, 803, 790, 778, 767, 755, 744, 733, | |
| 28 723, 713, 703, 693, 684, 675, 666, 657, 649, 641, 633, 625, | |
| 29 617, 609, 602, 594, 587, 580, 573, 567, 560, 553, 547, 541, | |
| 30 534, 528, 522, 516, 511, 505, 499, 494, 488, 483, 477, 472, | |
| 31 467, 462, 457, 452, 447, 442, 437, 433, 428, 424, 419, 415, | |
| 32 410, 406, 401, 397, 393, 389, 385, 381, 377, 373, 369, 365, | |
| 33 361, 357, 353, 349, 346, 342, 338, 335, 331, 328, 324, 321, | |
| 34 317, 314, 311, 307, 304, 301, 297, 294, 291, 288, 285, 281, | |
| 35 278, 275, 272, 269, 266, 263, 260, 257, 255, 252, 249, 246, | |
| 36 243, 240, 238, 235, 232, 229, 227, 224, 221, 219, 216, 214, | |
| 37 211, 208, 206, 203, 201, 198, 196, 194, 191, 189, 186, 184, | |
| 38 181, 179, 177, 174, 172, 170, 168, 165, 163, 161, 159, 156, | |
| 39 154, 152, 150, 148, 145, 143, 141, 139, 137, 135, 133, 131, | |
| 40 129, 127, 125, 123, 121, 119, 117, 115, 113, 111, 109, 107, | |
| 41 105, 103, 101, 99, 97, 95, 93, 92, 90, 88, 86, 84, | |
| 42 82, 81, 79, 77, 75, 73, 72, 70, 68, 66, 65, 63, | |
| 43 61, 60, 58, 56, 55, 53, 51, 50, 48, 46, 45, 43, | |
| 44 41, 40, 38, 37, 35, 33, 32, 30, 29, 27, 25, 24, | |
| 45 22, 21, 19, 18, 16, 15, 13, 12, 10, 9, 7, 6, | |
| 46 4, 3, 1, 1}; | |
| 47 | |
| 48 void vp9_start_encode(vp9_writer *br, uint8_t *source) { | |
| 49 br->lowvalue = 0; | |
| 50 br->range = 255; | |
| 51 br->value = 0; | |
| 52 br->count = -24; | |
| 53 br->buffer = source; | |
| 54 br->pos = 0; | |
| 55 vp9_write_bit(br, 0); | |
| 56 } | |
| 57 | |
| 58 void vp9_stop_encode(vp9_writer *br) { | |
| 59 int i; | |
| 60 | |
| 61 for (i = 0; i < 32; i++) | |
| 62 vp9_write_bit(br, 0); | |
| 63 | |
| 64 // Ensure there's no ambigous collision with any index marker bytes | |
| 65 if ((br->buffer[br->pos - 1] & 0xe0) == 0xc0) | |
| 66 br->buffer[br->pos++] = 0; | |
| 67 } | |
| 68 |
