diff options
author | trav90 <travawine@palemoon.org> | 2018-10-19 21:52:15 -0500 |
---|---|---|
committer | trav90 <travawine@palemoon.org> | 2018-10-19 21:52:20 -0500 |
commit | bbcc64772580c8a979288791afa02d30bc476d2e (patch) | |
tree | 437ce94c3fdd7497508e5b55de06c6d011678597 /third_party/aom/av1/encoder/subexp.c | |
parent | 14805f6ddbfb173c327768fff9f81f40ce5e81b0 (diff) | |
download | UXP-bbcc64772580c8a979288791afa02d30bc476d2e.tar UXP-bbcc64772580c8a979288791afa02d30bc476d2e.tar.gz UXP-bbcc64772580c8a979288791afa02d30bc476d2e.tar.lz UXP-bbcc64772580c8a979288791afa02d30bc476d2e.tar.xz UXP-bbcc64772580c8a979288791afa02d30bc476d2e.zip |
Update aom to v1.0.0
Update aom to commit id d14c5bb4f336ef1842046089849dee4a301fbbf0.
Diffstat (limited to 'third_party/aom/av1/encoder/subexp.c')
-rw-r--r-- | third_party/aom/av1/encoder/subexp.c | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/third_party/aom/av1/encoder/subexp.c b/third_party/aom/av1/encoder/subexp.c deleted file mode 100644 index dc96d712a..000000000 --- a/third_party/aom/av1/encoder/subexp.c +++ /dev/null @@ -1,164 +0,0 @@ -/* - * Copyright (c) 2016, Alliance for Open Media. All rights reserved - * - * This source code is subject to the terms of the BSD 2 Clause License and - * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License - * was not distributed with this source code in the LICENSE file, you can - * obtain it at www.aomedia.org/license/software. If the Alliance for Open - * Media Patent License 1.0 was not distributed with this source code in the - * PATENTS file, you can obtain it at www.aomedia.org/license/patent. - */ -#include "aom_dsp/bitwriter.h" - -#include "av1/common/common.h" -#include "av1/common/entropy.h" -#include "av1/encoder/cost.h" -#include "av1/encoder/subexp.h" - -static const uint8_t update_bits[255] = { - 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, - 8, 8, 8, 8, 8, 8, 8, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, - 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, - 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, - 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, - 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, - 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, - 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, - 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, - 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, - 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, - 11, 11, 11, 11, 11, 11, 11, 0, -}; -#define MIN_DELP_BITS 5 - -static int 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 remap_prob(int v, int m) { - int i; - static const uint8_t map_table[MAX_PROB - 1] = { - // generated by: - // map_table[j] = split_index(j, MAX_PROB - 1, MODULUS_PARAM); - 20, 21, 22, 23, 24, 25, 0, 26, 27, 28, 29, 30, 31, 32, 33, - 34, 35, 36, 37, 1, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 2, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, - 3, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 4, 74, - 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 5, 86, 87, 88, - 89, 90, 91, 92, 93, 94, 95, 96, 97, 6, 98, 99, 100, 101, 102, - 103, 104, 105, 106, 107, 108, 109, 7, 110, 111, 112, 113, 114, 115, 116, - 117, 118, 119, 120, 121, 8, 122, 123, 124, 125, 126, 127, 128, 129, 130, - 131, 132, 133, 9, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, - 145, 10, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 11, - 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 12, 170, 171, - 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 13, 182, 183, 184, 185, - 186, 187, 188, 189, 190, 191, 192, 193, 14, 194, 195, 196, 197, 198, 199, - 200, 201, 202, 203, 204, 205, 15, 206, 207, 208, 209, 210, 211, 212, 213, - 214, 215, 216, 217, 16, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, - 228, 229, 17, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, - 18, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 19, - }; - v--; - m--; - if ((m << 1) <= MAX_PROB) - i = recenter_nonneg(v, m) - 1; - else - i = recenter_nonneg(MAX_PROB - 1 - v, MAX_PROB - 1 - m) - 1; - - i = map_table[i]; - return i; -} - -static int prob_diff_update_cost(aom_prob newp, aom_prob oldp) { - int delp = remap_prob(newp, oldp); - return update_bits[delp] << AV1_PROB_COST_SHIFT; -} - -static void encode_uniform(aom_writer *w, int v) { - const int l = 8; - const int m = (1 << l) - 190; - if (v < m) { - aom_write_literal(w, v, l - 1); - } else { - aom_write_literal(w, m + ((v - m) >> 1), l - 1); - aom_write_literal(w, (v - m) & 1, 1); - } -} - -static INLINE int write_bit_gte(aom_writer *w, int word, int test) { - aom_write_literal(w, word >= test, 1); - return word >= test; -} - -static void encode_term_subexp(aom_writer *w, int word) { - if (!write_bit_gte(w, word, 16)) { - aom_write_literal(w, word, 4); - } else if (!write_bit_gte(w, word, 32)) { - aom_write_literal(w, word - 16, 4); - } else if (!write_bit_gte(w, word, 64)) { - aom_write_literal(w, word - 32, 5); - } else { - encode_uniform(w, word - 64); - } -} - -void av1_write_prob_diff_update(aom_writer *w, aom_prob newp, aom_prob oldp) { - const int delp = remap_prob(newp, oldp); - encode_term_subexp(w, delp); -} - -int av1_prob_diff_update_savings_search(const unsigned int *ct, aom_prob oldp, - aom_prob *bestp, aom_prob upd, - int probwt) { - const uint32_t old_b = cost_branch256(ct, oldp); - int bestsavings = 0; - aom_prob newp, bestnewp = oldp; - const int step = *bestp > oldp ? -1 : 1; - const int upd_cost = av1_cost_one(upd) - av1_cost_zero(upd); - - if (old_b > (uint32_t)upd_cost + (MIN_DELP_BITS << AV1_PROB_COST_SHIFT)) { - for (newp = *bestp; newp != oldp; newp += step) { - const int new_b = cost_branch256(ct, newp); - const int update_b = prob_diff_update_cost(newp, oldp) + upd_cost; - const int savings = (int)((int64_t)old_b - new_b - update_b * probwt); - if (savings > bestsavings) { - bestsavings = savings; - bestnewp = newp; - } - } - } - *bestp = bestnewp; - return bestsavings; -} - -void av1_cond_prob_diff_update(aom_writer *w, aom_prob *oldp, - const unsigned int ct[2], int probwt) { - const aom_prob upd = DIFF_UPDATE_PROB; - aom_prob newp = get_binary_prob(ct[0], ct[1]); - const int savings = - av1_prob_diff_update_savings_search(ct, *oldp, &newp, upd, probwt); - assert(newp >= 1); - if (savings > 0) { - aom_write(w, 1, upd); - av1_write_prob_diff_update(w, newp, *oldp); - *oldp = newp; - } else { - aom_write(w, 0, upd); - } -} - -int av1_cond_prob_diff_update_savings(aom_prob *oldp, const unsigned int ct[2], - int probwt) { - const aom_prob upd = DIFF_UPDATE_PROB; - aom_prob newp = get_binary_prob(ct[0], ct[1]); - const int savings = - av1_prob_diff_update_savings_search(ct, *oldp, &newp, upd, probwt); - return savings; -} |