f883b42cab
Cherry-Picked the following commits: 0defd8f Changed "WebM" to "AOMedia" & "webm" to "aomedia" 54e6676 Replace "VPx" by "AVx" 5082a36 Change "Vpx" to "Avx" 7df44f1 Replace "Vp9" w/ "Av1" 967f722 Remove kVp9CodecId 828f30c Change "Vp8" to "AOM" 030b5ff AUTHORS regenerated 2524cae Add ref-mv experimental flag 016762b Change copyright notice to AOMedia form 81e5526 Replace vp9 w/ av1 9b94565 Add missing files fa8ca9f Change "vp9" to "av1" ec838b7 Convert "vp8" to "aom" 80edfa0 Change "VP9" to "AV1" d1a11fb Change "vp8" to "aom" 7b58251 Point to WebM test data dd1a5c8 Replace "VP8" with "AOM" ff00fc0 Change "VPX" to "AOM" 01dee0b Change "vp10" to "av1" in source code cebe6f0 Convert "vpx" to "aom" 17b0567 rename vp10*.mk to av1_*.mk fe5f8a8 rename files vp10_* to av1_* Change-Id: I6fc3d18eb11fc171e46140c836ad5339cf6c9419
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/*
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* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef AV1_ENCODER_COST_H_
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#define AV1_ENCODER_COST_H_
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#include "aom_dsp/prob.h"
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#include "aom/aom_integer.h"
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#if CONFIG_ANS
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#include "av1/common/ans.h"
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#endif // CONFIG_ANS
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern const uint16_t av1_prob_cost[256];
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// The factor to scale from cost in bits to cost in av1_prob_cost units.
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#define AV1_PROB_COST_SHIFT 9
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#define av1_cost_zero(prob) (av1_prob_cost[prob])
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#define av1_cost_one(prob) av1_cost_zero(256 - (prob))
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#define av1_cost_bit(prob, bit) av1_cost_zero((bit) ? 256 - (prob) : (prob))
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// Cost of coding an n bit literal, using 128 (i.e. 50%) probability
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// for each bit.
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#define av1_cost_literal(n) ((n) * (1 << AV1_PROB_COST_SHIFT))
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static INLINE unsigned int cost_branch256(const unsigned int ct[2],
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aom_prob p) {
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return ct[0] * av1_cost_zero(p) + ct[1] * av1_cost_one(p);
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}
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static INLINE int treed_cost(aom_tree tree, const aom_prob *probs, int bits,
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int len) {
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int cost = 0;
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aom_tree_index i = 0;
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do {
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const int bit = (bits >> --len) & 1;
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cost += av1_cost_bit(probs[i >> 1], bit);
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i = tree[i + bit];
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} while (len);
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return cost;
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}
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void av1_cost_tokens(int *costs, const aom_prob *probs, aom_tree tree);
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void av1_cost_tokens_skip(int *costs, const aom_prob *probs, aom_tree tree);
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#if CONFIG_ANS
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void av1_cost_tokens_ans(int *costs, const aom_prob *tree_probs,
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const rans_dec_lut token_cdf, int skip_eob);
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#endif
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // AV1_ENCODER_COST_H_
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