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