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Diffstat (limited to 'vp8/encoder/boolhuff.c')
| -rw-r--r-- | vp8/encoder/boolhuff.c | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/vp8/encoder/boolhuff.c b/vp8/encoder/boolhuff.c deleted file mode 100644 index 0cb4b68cc..000000000 --- a/vp8/encoder/boolhuff.c +++ /dev/null @@ -1,153 +0,0 @@ -/* - * 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 "boolhuff.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(BOOL_CODER *br, unsigned char *source) { - - br->lowvalue = 0; - br->range = 255; - br->value = 0; - br->count = -24; - br->buffer = source; - br->pos = 0; -} - -void vp9_stop_encode(BOOL_CODER *br) { - int i; - - for (i = 0; i < 32; i++) - encode_bool(br, 0, 128); -} - - -void vp9_encode_value(BOOL_CODER *br, int data, int bits) { - int bit; - - for (bit = bits - 1; bit >= 0; bit--) - encode_bool(br, (1 & (data >> bit)), 0x80); -} - -int vp9_recenter_nonneg(int v, int m) { - if (v > (m << 1)) return v; - else if (v >= m) return ((v - m) << 1); - else return ((m - v) << 1) - 1; -} - -static int get_unsigned_bits(unsigned num_values) { - int cat = 0; - if ((num_values--) <= 1) return 0; - while (num_values > 0) { - cat++; - num_values >>= 1; - } - return cat; -} - -void vp9_encode_uniform(BOOL_CODER *br, int v, int n) { - int l = get_unsigned_bits(n); - int m; - if (l == 0) return; - m = (1 << l) - n; - if (v < m) - vp9_encode_value(br, v, l - 1); - else { - vp9_encode_value(br, m + ((v - m) >> 1), l - 1); - vp9_encode_value(br, (v - m) & 1, 1); - } -} - -int vp9_count_uniform(int v, int n) { - int l = get_unsigned_bits(n); - int m; - if (l == 0) return 0; - m = (1 << l) - n; - if (v < m) - return l - 1; - else - return l; -} - -void vp9_encode_term_subexp(BOOL_CODER *br, int word, int k, int num_syms) { - int i = 0; - int mk = 0; - while (1) { - int b = (i ? k + i - 1 : k); - int a = (1 << b); - if (num_syms <= mk + 3 * a) { - vp9_encode_uniform(br, word - mk, num_syms - mk); - break; - } else { - int t = (word >= mk + a); - vp9_encode_value(br, t, 1); - if (t) { - i = i + 1; - mk += a; - } else { - vp9_encode_value(br, word - mk, b); - break; - } - } - } -} - -int vp9_count_term_subexp(int word, int k, int num_syms) { - int count = 0; - int i = 0; - int mk = 0; - while (1) { - int b = (i ? k + i - 1 : k); - int a = (1 << b); - if (num_syms <= mk + 3 * a) { - count += vp9_count_uniform(word - mk, num_syms - mk); - break; - } else { - int t = (word >= mk + a); - count++; - if (t) { - i = i + 1; - mk += a; - } else { - count += b; - break; - } - } - } - return count; -} |