1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libvpx/vp8/encoder/boolhuff.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,70 @@
1.4 +/*
1.5 + * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license
1.8 + * that can be found in the LICENSE file in the root of the source
1.9 + * tree. An additional intellectual property rights grant can be found
1.10 + * in the file PATENTS. All contributing project authors may
1.11 + * be found in the AUTHORS file in the root of the source tree.
1.12 + */
1.13 +
1.14 +
1.15 +#include "boolhuff.h"
1.16 +
1.17 +#if defined(SECTIONBITS_OUTPUT)
1.18 +unsigned __int64 Sectionbits[500];
1.19 +
1.20 +#endif
1.21 +
1.22 +#ifdef VP8_ENTROPY_STATS
1.23 +unsigned int active_section = 0;
1.24 +#endif
1.25 +
1.26 +const unsigned int vp8_prob_cost[256] =
1.27 +{
1.28 + 2047, 2047, 1791, 1641, 1535, 1452, 1385, 1328, 1279, 1235, 1196, 1161, 1129, 1099, 1072, 1046,
1.29 + 1023, 1000, 979, 959, 940, 922, 905, 889, 873, 858, 843, 829, 816, 803, 790, 778,
1.30 + 767, 755, 744, 733, 723, 713, 703, 693, 684, 675, 666, 657, 649, 641, 633, 625,
1.31 + 617, 609, 602, 594, 587, 580, 573, 567, 560, 553, 547, 541, 534, 528, 522, 516,
1.32 + 511, 505, 499, 494, 488, 483, 477, 472, 467, 462, 457, 452, 447, 442, 437, 433,
1.33 + 428, 424, 419, 415, 410, 406, 401, 397, 393, 389, 385, 381, 377, 373, 369, 365,
1.34 + 361, 357, 353, 349, 346, 342, 338, 335, 331, 328, 324, 321, 317, 314, 311, 307,
1.35 + 304, 301, 297, 294, 291, 288, 285, 281, 278, 275, 272, 269, 266, 263, 260, 257,
1.36 + 255, 252, 249, 246, 243, 240, 238, 235, 232, 229, 227, 224, 221, 219, 216, 214,
1.37 + 211, 208, 206, 203, 201, 198, 196, 194, 191, 189, 186, 184, 181, 179, 177, 174,
1.38 + 172, 170, 168, 165, 163, 161, 159, 156, 154, 152, 150, 148, 145, 143, 141, 139,
1.39 + 137, 135, 133, 131, 129, 127, 125, 123, 121, 119, 117, 115, 113, 111, 109, 107,
1.40 + 105, 103, 101, 99, 97, 95, 93, 92, 90, 88, 86, 84, 82, 81, 79, 77,
1.41 + 75, 73, 72, 70, 68, 66, 65, 63, 61, 60, 58, 56, 55, 53, 51, 50,
1.42 + 48, 46, 45, 43, 41, 40, 38, 37, 35, 33, 32, 30, 29, 27, 25, 24,
1.43 + 22, 21, 19, 18, 16, 15, 13, 12, 10, 9, 7, 6, 4, 3, 1, 1
1.44 +};
1.45 +
1.46 +void vp8_start_encode(BOOL_CODER *br, unsigned char *source, unsigned char *source_end)
1.47 +{
1.48 +
1.49 + br->lowvalue = 0;
1.50 + br->range = 255;
1.51 + br->count = -24;
1.52 + br->buffer = source;
1.53 + br->buffer_end = source_end;
1.54 + br->pos = 0;
1.55 +}
1.56 +
1.57 +void vp8_stop_encode(BOOL_CODER *br)
1.58 +{
1.59 + int i;
1.60 +
1.61 + for (i = 0; i < 32; i++)
1.62 + vp8_encode_bool(br, 0, 128);
1.63 +}
1.64 +
1.65 +
1.66 +void vp8_encode_value(BOOL_CODER *br, int data, int bits)
1.67 +{
1.68 + int bit;
1.69 +
1.70 + for (bit = bits - 1; bit >= 0; bit--)
1.71 + vp8_encode_bool(br, (1 & (data >> bit)), 0x80);
1.72 +
1.73 +}
