2015-08-06 05:00:31 +03:00
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/*
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2016-09-02 22:04:54 +03:00
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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2015-08-06 05:00:31 +03:00
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*
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2016-09-02 22:04:54 +03:00
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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2015-08-06 05:00:31 +03:00
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*/
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2016-08-31 00:01:10 +03:00
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#ifndef AV1_COMMON_ENTROPY_H_
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#define AV1_COMMON_ENTROPY_H_
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2015-08-06 05:00:31 +03:00
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2016-08-31 00:01:10 +03:00
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#include "aom/aom_integer.h"
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2016-08-23 02:08:15 +03:00
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#include "aom_dsp/prob.h"
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2015-08-06 05:00:31 +03:00
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2015-12-16 22:17:25 +03:00
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#if CONFIG_ANS
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2016-09-18 01:11:16 +03:00
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#include "aom_dsp/ans.h"
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2015-12-16 22:17:25 +03:00
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#endif // CONFIG_ANS
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2016-08-23 02:08:15 +03:00
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#include "av1/common/common.h"
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#include "av1/common/enums.h"
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2015-08-06 05:00:31 +03:00
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#ifdef __cplusplus
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extern "C" {
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#endif
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2016-08-12 04:55:00 +03:00
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#define DIFF_UPDATE_PROB 252
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2015-09-03 12:58:12 +03:00
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#define GROUP_DIFF_UPDATE_PROB 252
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2015-08-06 05:00:31 +03:00
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2016-01-08 01:29:26 +03:00
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#if CONFIG_ENTROPY
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#define COEF_PROBS_BUFS 16
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#define QCTX_BIN_BITS 2
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#define QCTX_BINS (1 << QCTX_BIN_BITS)
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#endif // CONFIG_ENTROPY
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2015-08-06 05:00:31 +03:00
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// Coefficient token alphabet
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2016-08-12 04:55:00 +03:00
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#define ZERO_TOKEN 0 // 0 Extra Bits 0+0
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#define ONE_TOKEN 1 // 1 Extra Bits 0+1
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#define TWO_TOKEN 2 // 2 Extra Bits 0+1
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#define THREE_TOKEN 3 // 3 Extra Bits 0+1
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#define FOUR_TOKEN 4 // 4 Extra Bits 0+1
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2015-08-06 05:00:31 +03:00
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#define CATEGORY1_TOKEN 5 // 5-6 Extra Bits 1+1
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#define CATEGORY2_TOKEN 6 // 7-10 Extra Bits 2+1
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#define CATEGORY3_TOKEN 7 // 11-18 Extra Bits 3+1
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#define CATEGORY4_TOKEN 8 // 19-34 Extra Bits 4+1
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#define CATEGORY5_TOKEN 9 // 35-66 Extra Bits 5+1
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#define CATEGORY6_TOKEN 10 // 67+ Extra Bits 14+1
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2016-08-12 04:55:00 +03:00
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#define EOB_TOKEN 11 // EOB Extra Bits 0+0
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2015-08-06 05:00:31 +03:00
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#define ENTROPY_TOKENS 12
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#define ENTROPY_NODES 11
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2016-08-31 00:01:10 +03:00
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DECLARE_ALIGNED(16, extern const uint8_t, av1_pt_energy_class[ENTROPY_TOKENS]);
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2015-08-06 05:00:31 +03:00
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2016-08-12 04:55:00 +03:00
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#define CAT1_MIN_VAL 5
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#define CAT2_MIN_VAL 7
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#define CAT3_MIN_VAL 11
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#define CAT4_MIN_VAL 19
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#define CAT5_MIN_VAL 35
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#define CAT6_MIN_VAL 67
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2015-08-06 05:00:31 +03:00
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// Extra bit probabilities.
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2016-08-31 00:01:10 +03:00
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat1_prob[1]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat2_prob[2]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat3_prob[3]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat4_prob[4]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat5_prob[5]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat6_prob[14]);
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#if CONFIG_AOM_HIGHBITDEPTH
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat1_prob_high10[1]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat2_prob_high10[2]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat3_prob_high10[3]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat4_prob_high10[4]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat5_prob_high10[5]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat6_prob_high10[16]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat1_prob_high12[1]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat2_prob_high12[2]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat3_prob_high12[3]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat4_prob_high12[4]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat5_prob_high12[5]);
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DECLARE_ALIGNED(16, extern const uint8_t, av1_cat6_prob_high12[18]);
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#endif // CONFIG_AOM_HIGHBITDEPTH
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2015-08-06 05:00:31 +03:00
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#define EOB_MODEL_TOKEN 3
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typedef struct {
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2016-08-31 00:01:10 +03:00
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const aom_tree_index *tree;
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const aom_prob *prob;
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2015-08-06 05:00:31 +03:00
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int len;
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int base_val;
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const int16_t *cost;
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2016-08-31 00:01:10 +03:00
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} av1_extra_bit;
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2015-08-06 05:00:31 +03:00
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// indexed by token value
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2016-08-31 00:01:10 +03:00
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extern const av1_extra_bit av1_extra_bits[ENTROPY_TOKENS];
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#if CONFIG_AOM_HIGHBITDEPTH
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extern const av1_extra_bit av1_extra_bits_high10[ENTROPY_TOKENS];
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extern const av1_extra_bit av1_extra_bits_high12[ENTROPY_TOKENS];
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#endif // CONFIG_AOM_HIGHBITDEPTH
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2015-08-06 05:00:31 +03:00
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2016-08-12 04:55:00 +03:00
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#define DCT_MAX_VALUE 16384
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2016-08-31 00:01:10 +03:00
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#if CONFIG_AOM_HIGHBITDEPTH
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2016-08-12 04:55:00 +03:00
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#define DCT_MAX_VALUE_HIGH10 65536
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#define DCT_MAX_VALUE_HIGH12 262144
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2016-08-31 00:01:10 +03:00
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#endif // CONFIG_AOM_HIGHBITDEPTH
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2015-08-06 05:00:31 +03:00
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/* Coefficients are predicted via a 3-dimensional probability table. */
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#define REF_TYPES 2 // intra=0, inter=1
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/* Middle dimension reflects the coefficient position within the transform. */
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#define COEF_BANDS 6
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/* Inside dimension is measure of nearby complexity, that reflects the energy
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of nearby coefficients are nonzero. For the first coefficient (DC, unless
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block type is 0), we look at the (already encoded) blocks above and to the
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left of the current block. The context index is then the number (0,1,or 2)
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of these blocks having nonzero coefficients.
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After decoding a coefficient, the measure is determined by the size of the
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most recently decoded coefficient.
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Note that the intuitive meaning of this measure changes as coefficients
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are decoded, e.g., prior to the first token, a zero means that my neighbors
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are empty while, after the first token, because of the use of end-of-block,
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a zero means we just decoded a zero and hence guarantees that a non-zero
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coefficient will appear later in this block. However, this shift
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in meaning is perfectly OK because our context depends also on the
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coefficient band (and since zigzag positions 0, 1, and 2 are in
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distinct bands). */
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#define COEFF_CONTEXTS 6
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#define BAND_COEFF_CONTEXTS(band) ((band) == 0 ? 3 : COEFF_CONTEXTS)
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// #define ENTROPY_STATS
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2016-09-08 08:40:40 +03:00
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typedef unsigned int av1_coeff_count[REF_TYPES][COEF_BANDS][COEFF_CONTEXTS]
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[ENTROPY_TOKENS];
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typedef unsigned int av1_coeff_stats[REF_TYPES][COEF_BANDS][COEFF_CONTEXTS]
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[ENTROPY_NODES][2];
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2015-08-06 05:00:31 +03:00
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2016-08-12 04:55:00 +03:00
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#define SUBEXP_PARAM 4 /* Subexponential code parameter */
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#define MODULUS_PARAM 13 /* Modulus parameter */
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2015-08-06 05:00:31 +03:00
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2016-08-31 00:01:10 +03:00
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struct AV1Common;
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void av1_default_coef_probs(struct AV1Common *cm);
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void av1_adapt_coef_probs(struct AV1Common *cm);
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2016-01-08 01:29:26 +03:00
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#if CONFIG_ENTROPY
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2016-08-31 00:01:10 +03:00
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void av1_partial_adapt_probs(struct AV1Common *cm, int mi_row, int mi_col);
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2016-01-08 01:29:26 +03:00
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#endif // CONFIG_ENTROPY
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2015-08-06 05:00:31 +03:00
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// This is the index in the scan order beyond which all coefficients for
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// 8x8 transform and above are in the top band.
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// This macro is currently unused but may be used by certain implementations
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#define MAXBAND_INDEX 21
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2016-08-31 00:01:10 +03:00
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DECLARE_ALIGNED(16, extern const uint8_t, av1_coefband_trans_8x8plus[1024]);
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2016-07-01 22:57:14 +03:00
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#if CONFIG_EXT_TX
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2016-08-31 00:01:10 +03:00
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DECLARE_ALIGNED(16, extern const uint8_t, av1_coefband_trans_4x8_8x4[32]);
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2016-07-01 22:57:14 +03:00
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#endif // CONFIG_EXT_TX
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2016-08-31 00:01:10 +03:00
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DECLARE_ALIGNED(16, extern const uint8_t, av1_coefband_trans_4x4[16]);
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2015-08-06 05:00:31 +03:00
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2016-08-12 04:55:00 +03:00
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DECLARE_ALIGNED(16, extern const uint16_t, band_count_table[TX_SIZES_ALL][8]);
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2016-07-01 22:57:14 +03:00
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DECLARE_ALIGNED(16, extern const uint16_t,
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band_cum_count_table[TX_SIZES_ALL][8]);
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2015-08-06 05:00:31 +03:00
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static INLINE const uint8_t *get_band_translate(TX_SIZE tx_size) {
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2016-07-01 22:57:14 +03:00
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switch (tx_size) {
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2016-08-31 00:01:10 +03:00
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case TX_4X4: return av1_coefband_trans_4x4;
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2016-07-01 22:57:14 +03:00
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#if CONFIG_EXT_TX
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2016-08-31 00:01:10 +03:00
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case TX_4X8: return av1_coefband_trans_4x8_8x4;
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2016-07-01 22:57:14 +03:00
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#endif // CONFIG_EXT_TX
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2016-08-31 00:01:10 +03:00
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default: return av1_coefband_trans_8x8plus;
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2016-07-01 22:57:14 +03:00
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}
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2015-08-06 05:00:31 +03:00
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}
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// 128 lists of probabilities are stored for the following ONE node probs:
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// 1, 3, 5, 7, ..., 253, 255
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// In between probabilities are interpolated linearly
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2015-10-09 02:01:42 +03:00
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#define COEFF_PROB_MODELS 255
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2015-08-06 05:00:31 +03:00
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2016-08-12 04:55:00 +03:00
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#define UNCONSTRAINED_NODES 3
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2015-08-06 05:00:31 +03:00
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2016-08-12 04:55:00 +03:00
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#define PIVOT_NODE 2 // which node is pivot
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2015-08-06 05:00:31 +03:00
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#define MODEL_NODES (ENTROPY_NODES - UNCONSTRAINED_NODES)
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2016-08-31 00:01:10 +03:00
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extern const aom_tree_index av1_coef_con_tree[TREE_SIZE(ENTROPY_TOKENS)];
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extern const aom_prob av1_pareto8_full[COEFF_PROB_MODELS][MODEL_NODES];
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2015-12-16 22:17:25 +03:00
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#if CONFIG_ANS
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2016-09-08 08:40:40 +03:00
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extern const AnsP10 av1_pareto8_token_probs[COEFF_PROB_MODELS]
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[ENTROPY_TOKENS - 2];
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2015-12-16 22:17:25 +03:00
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2016-02-19 23:51:15 +03:00
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typedef rans_dec_lut coeff_cdf_model[REF_TYPES][COEF_BANDS][COEFF_CONTEXTS];
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2015-12-16 22:17:25 +03:00
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#endif // CONFIG_ANS
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2015-08-06 05:00:31 +03:00
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2016-08-31 00:01:10 +03:00
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typedef aom_prob av1_coeff_probs_model[REF_TYPES][COEF_BANDS][COEFF_CONTEXTS]
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[UNCONSTRAINED_NODES];
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2015-08-06 05:00:31 +03:00
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2016-09-08 08:40:40 +03:00
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typedef unsigned int av1_coeff_count_model[REF_TYPES][COEF_BANDS]
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[COEFF_CONTEXTS]
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[UNCONSTRAINED_NODES + 1];
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2015-08-06 05:00:31 +03:00
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2016-08-31 00:01:10 +03:00
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void av1_model_to_full_probs(const aom_prob *model, aom_prob *full);
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2015-08-06 05:00:31 +03:00
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typedef char ENTROPY_CONTEXT;
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static INLINE int combine_entropy_contexts(ENTROPY_CONTEXT a,
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ENTROPY_CONTEXT b) {
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return (a != 0) + (b != 0);
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}
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2016-08-12 04:55:00 +03:00
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static INLINE int get_entropy_context(TX_SIZE tx_size, const ENTROPY_CONTEXT *a,
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2015-08-06 05:00:31 +03:00
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const ENTROPY_CONTEXT *l) {
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ENTROPY_CONTEXT above_ec = 0, left_ec = 0;
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switch (tx_size) {
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case TX_4X4:
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above_ec = a[0] != 0;
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left_ec = l[0] != 0;
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break;
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2016-07-01 22:57:14 +03:00
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#if CONFIG_EXT_TX
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case TX_4X8:
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above_ec = a[0] != 0;
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left_ec = !!*(const uint16_t *)l;
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break;
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case TX_8X4:
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above_ec = !!*(const uint16_t *)a;
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left_ec = l[0] != 0;
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break;
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2016-07-22 18:55:42 +03:00
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case TX_8X16:
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above_ec = !!*(const uint16_t *)a;
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2016-08-19 01:10:22 +03:00
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left_ec = !!*(const uint32_t *)l;
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2016-07-22 18:55:42 +03:00
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break;
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case TX_16X8:
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above_ec = !!*(const uint32_t *)a;
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2016-08-19 01:10:22 +03:00
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left_ec = !!*(const uint16_t *)l;
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2016-07-22 18:55:42 +03:00
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break;
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case TX_16X32:
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above_ec = !!*(const uint32_t *)a;
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2016-08-19 01:10:22 +03:00
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left_ec = !!*(const uint64_t *)l;
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2016-07-22 18:55:42 +03:00
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break;
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case TX_32X16:
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above_ec = !!*(const uint64_t *)a;
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2016-08-19 01:10:22 +03:00
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left_ec = !!*(const uint32_t *)l;
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2016-07-22 18:55:42 +03:00
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break;
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2016-07-01 22:57:14 +03:00
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#endif // CONFIG_EXT_TX
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2015-08-06 05:00:31 +03:00
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case TX_8X8:
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above_ec = !!*(const uint16_t *)a;
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2016-08-12 04:55:00 +03:00
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left_ec = !!*(const uint16_t *)l;
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2015-08-06 05:00:31 +03:00
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break;
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case TX_16X16:
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above_ec = !!*(const uint32_t *)a;
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2016-08-12 04:55:00 +03:00
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left_ec = !!*(const uint32_t *)l;
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2015-08-06 05:00:31 +03:00
|
|
|
break;
|
|
|
|
case TX_32X32:
|
|
|
|
above_ec = !!*(const uint64_t *)a;
|
2016-08-12 04:55:00 +03:00
|
|
|
left_ec = !!*(const uint64_t *)l;
|
2015-08-06 05:00:31 +03:00
|
|
|
break;
|
2016-08-12 04:55:00 +03:00
|
|
|
default: assert(0 && "Invalid transform size."); break;
|
2015-08-06 05:00:31 +03:00
|
|
|
}
|
|
|
|
return combine_entropy_contexts(above_ec, left_ec);
|
|
|
|
}
|
|
|
|
|
2016-02-19 23:51:15 +03:00
|
|
|
#if CONFIG_ANS
|
|
|
|
struct frame_contexts;
|
2016-08-31 00:01:10 +03:00
|
|
|
void av1_coef_pareto_cdfs(struct frame_contexts *fc);
|
2016-02-19 23:51:15 +03:00
|
|
|
#endif // CONFIG_ANS
|
2016-04-27 01:04:19 +03:00
|
|
|
|
|
|
|
#if CONFIG_ENTROPY
|
2016-08-12 04:55:00 +03:00
|
|
|
#define COEF_COUNT_SAT_BITS 5
|
|
|
|
#define COEF_MAX_UPDATE_FACTOR_BITS 7
|
|
|
|
#define COEF_COUNT_SAT_AFTER_KEY_BITS 5
|
2016-04-27 01:04:19 +03:00
|
|
|
#define COEF_MAX_UPDATE_FACTOR_AFTER_KEY_BITS 7
|
2016-08-12 04:55:00 +03:00
|
|
|
#define MODE_MV_COUNT_SAT_BITS 5
|
|
|
|
#define MODE_MV_MAX_UPDATE_FACTOR_BITS 7
|
2016-04-27 01:04:19 +03:00
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
#define COEF_COUNT_SAT 24
|
|
|
|
#define COEF_MAX_UPDATE_FACTOR 112
|
|
|
|
#define COEF_COUNT_SAT_AFTER_KEY 24
|
|
|
|
#define COEF_MAX_UPDATE_FACTOR_AFTER_KEY 128
|
|
|
|
|
|
|
|
#endif // CONFIG_ENTROPY
|
|
|
|
|
2016-08-31 00:01:10 +03:00
|
|
|
static INLINE aom_prob av1_merge_probs(aom_prob pre_prob,
|
|
|
|
const unsigned int ct[2],
|
|
|
|
unsigned int count_sat,
|
|
|
|
unsigned int max_update_factor) {
|
2016-04-27 01:04:19 +03:00
|
|
|
#if CONFIG_ENTROPY
|
2016-08-31 00:01:10 +03:00
|
|
|
const aom_prob prob = get_binary_prob(ct[0], ct[1]);
|
2016-04-27 01:04:19 +03:00
|
|
|
const unsigned int count =
|
2016-08-31 00:01:10 +03:00
|
|
|
AOMMIN(ct[0] + ct[1], (unsigned int)(1 << count_sat));
|
2016-08-12 04:55:00 +03:00
|
|
|
const unsigned int factor = count << (max_update_factor - count_sat);
|
2016-04-27 01:04:19 +03:00
|
|
|
return weighted_prob(pre_prob, prob, factor);
|
|
|
|
#else
|
|
|
|
return merge_probs(pre_prob, ct, count_sat, max_update_factor);
|
|
|
|
#endif // CONFIG_ENTROPY
|
|
|
|
}
|
|
|
|
|
2016-08-31 00:01:10 +03:00
|
|
|
static INLINE aom_prob av1_mode_mv_merge_probs(aom_prob pre_prob,
|
|
|
|
const unsigned int ct[2]) {
|
2016-04-27 01:04:19 +03:00
|
|
|
#if CONFIG_ENTROPY
|
2016-08-31 00:01:10 +03:00
|
|
|
return av1_merge_probs(pre_prob, ct, MODE_MV_COUNT_SAT_BITS,
|
|
|
|
MODE_MV_MAX_UPDATE_FACTOR_BITS);
|
2016-04-27 01:04:19 +03:00
|
|
|
#else
|
|
|
|
return mode_mv_merge_probs(pre_prob, ct);
|
|
|
|
#endif // CONFIG_ENTROPY
|
|
|
|
}
|
|
|
|
|
2015-08-06 05:00:31 +03:00
|
|
|
#ifdef __cplusplus
|
|
|
|
} // extern "C"
|
|
|
|
#endif
|
|
|
|
|
2016-08-31 00:01:10 +03:00
|
|
|
#endif // AV1_COMMON_ENTROPY_H_
|