318 строки
12 KiB
C
318 строки
12 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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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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*/
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#include "av1/common/onyxc_int.h"
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#include "av1/common/entropymv.h"
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// Integer pel reference mv threshold for use of high-precision 1/8 mv
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#define COMPANDED_MVREF_THRESH 8
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const aom_tree_index av1_mv_joint_tree[TREE_SIZE(MV_JOINTS)] = {
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-MV_JOINT_ZERO, 2, -MV_JOINT_HNZVZ, 4, -MV_JOINT_HZVNZ, -MV_JOINT_HNZVNZ
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};
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/* clang-format off */
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const aom_tree_index av1_mv_class_tree[TREE_SIZE(MV_CLASSES)] = {
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-MV_CLASS_0, 2,
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-MV_CLASS_1, 4,
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6, 8,
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-MV_CLASS_2, -MV_CLASS_3,
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10, 12,
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-MV_CLASS_4, -MV_CLASS_5,
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-MV_CLASS_6, 14,
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16, 18,
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-MV_CLASS_7, -MV_CLASS_8,
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-MV_CLASS_9, -MV_CLASS_10,
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};
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/* clang-format on */
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const aom_tree_index av1_mv_class0_tree[TREE_SIZE(CLASS0_SIZE)] = {
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-0, -1,
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};
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const aom_tree_index av1_mv_fp_tree[TREE_SIZE(MV_FP_SIZE)] = { -0, 2, -1,
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4, -2, -3 };
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static const nmv_context default_nmv_context = {
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{ 32, 64, 96 }, // joints
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#if CONFIG_EC_MULTISYMBOL
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{ 0, 0, 0, 0 }, // joint_cdf is computed from joints in av1_init_mv_probs()
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#endif
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{ {
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// Vertical component
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128, // sign
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{ 224, 144, 192, 168, 192, 176, 192, 198, 198, 245 }, // class
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#if CONFIG_EC_MULTISYMBOL
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{ 0 }, // class_cdf is computed from class in av1_init_mv_probs()
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#endif
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{ 216 }, // class0
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{ 136, 140, 148, 160, 176, 192, 224, 234, 234, 240 }, // bits
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{ { 128, 128, 64 }, { 96, 112, 64 } }, // class0_fp
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{ 64, 96, 64 }, // fp
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#if CONFIG_EC_MULTISYMBOL
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{ { 0 }, { 0 } }, // class0_fp_cdf is computed in av1_init_mv_probs()
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{ 0 }, // fp_cdf is computed from fp in av1_init_mv_probs()
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#endif
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160, // class0_hp bit
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128, // hp
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},
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{
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// Horizontal component
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128, // sign
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{ 216, 128, 176, 160, 176, 176, 192, 198, 198, 208 }, // class
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#if CONFIG_EC_MULTISYMBOL
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{ 0 }, // class_cdf is computed from class in av1_init_mv_probs()
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#endif
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{ 208 }, // class0
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{ 136, 140, 148, 160, 176, 192, 224, 234, 234, 240 }, // bits
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{ { 128, 128, 64 }, { 96, 112, 64 } }, // class0_fp
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{ 64, 96, 64 }, // fp
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#if CONFIG_EC_MULTISYMBOL
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{ { 0 }, { 0 } }, // class0_fp_cdf is computed in av1_init_mv_probs()
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{ 0 }, // fp_cdf is computed from fp in av1_init_mv_probs()
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#endif
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160, // class0_hp bit
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128, // hp
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} },
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};
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static const uint8_t log_in_base_2[] = {
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0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
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4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
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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,
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8,
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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,
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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,
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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,
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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,
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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,
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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,
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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,
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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,
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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,
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8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9,
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9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10
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};
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#if CONFIG_GLOBAL_MOTION
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#if GLOBAL_TRANS_TYPES == 5
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const aom_tree_index av1_global_motion_types_tree[TREE_SIZE(
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GLOBAL_TRANS_TYPES)] = { -IDENTITY, 2, -TRANSLATION, 4,
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-ROTZOOM, 6, -AFFINE, -HOMOGRAPHY };
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static const aom_prob default_global_motion_types_prob[GLOBAL_TRANS_TYPES - 1] =
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{ 224, 128, 192, 192 };
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#elif GLOBAL_TRANS_TYPES == 4
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const aom_tree_index av1_global_motion_types_tree[TREE_SIZE(
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GLOBAL_TRANS_TYPES)] = { -IDENTITY, 2, -TRANSLATION, 4, -ROTZOOM, -AFFINE };
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static const aom_prob default_global_motion_types_prob[GLOBAL_TRANS_TYPES - 1] =
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{ 224, 128, 240 };
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#elif GLOBAL_TRANS_TYPES == 3
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const aom_tree_index av1_global_motion_types_tree[TREE_SIZE(
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GLOBAL_TRANS_TYPES)] = { -IDENTITY, 2, -TRANSLATION, -ROTZOOM };
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static const aom_prob default_global_motion_types_prob[GLOBAL_TRANS_TYPES - 1] =
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{ 224, 128 };
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#endif // GLOBAL_TRANS_TYPES
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#endif // CONFIG_GLOBAL_MOTION
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static INLINE int mv_class_base(MV_CLASS_TYPE c) {
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return c ? CLASS0_SIZE << (c + 2) : 0;
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}
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MV_CLASS_TYPE av1_get_mv_class(int z, int *offset) {
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const MV_CLASS_TYPE c = (z >= CLASS0_SIZE * 4096)
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? MV_CLASS_10
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: (MV_CLASS_TYPE)log_in_base_2[z >> 3];
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if (offset) *offset = z - mv_class_base(c);
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return c;
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}
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static void inc_mv_component(int v, nmv_component_counts *comp_counts, int incr,
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int usehp) {
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int s, z, c, o, d, e, f;
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assert(v != 0); /* should not be zero */
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s = v < 0;
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comp_counts->sign[s] += incr;
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z = (s ? -v : v) - 1; /* magnitude - 1 */
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c = av1_get_mv_class(z, &o);
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comp_counts->classes[c] += incr;
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d = (o >> 3); /* int mv data */
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f = (o >> 1) & 3; /* fractional pel mv data */
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e = (o & 1); /* high precision mv data */
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if (c == MV_CLASS_0) {
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comp_counts->class0[d] += incr;
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comp_counts->class0_fp[d][f] += incr;
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if (usehp) comp_counts->class0_hp[e] += incr;
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} else {
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int i;
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int b = c + CLASS0_BITS - 1; // number of bits
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for (i = 0; i < b; ++i) comp_counts->bits[i][((d >> i) & 1)] += incr;
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comp_counts->fp[f] += incr;
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if (usehp) comp_counts->hp[e] += incr;
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}
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}
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void av1_inc_mv(const MV *mv, nmv_context_counts *counts, const int usehp) {
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if (counts != NULL) {
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const MV_JOINT_TYPE j = av1_get_mv_joint(mv);
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++counts->joints[j];
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if (mv_joint_vertical(j))
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inc_mv_component(mv->row, &counts->comps[0], 1, usehp);
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if (mv_joint_horizontal(j))
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inc_mv_component(mv->col, &counts->comps[1], 1, usehp);
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}
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}
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void av1_adapt_mv_probs(AV1_COMMON *cm, int allow_hp) {
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int i, j;
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#if CONFIG_REF_MV
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int idx;
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for (idx = 0; idx < NMV_CONTEXTS; ++idx) {
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nmv_context *fc = &cm->fc->nmvc[idx];
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const nmv_context *pre_fc =
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&cm->frame_contexts[cm->frame_context_idx].nmvc[idx];
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const nmv_context_counts *counts = &cm->counts.mv[idx];
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aom_tree_merge_probs(av1_mv_joint_tree, pre_fc->joints, counts->joints,
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fc->joints);
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for (i = 0; i < 2; ++i) {
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nmv_component *comp = &fc->comps[i];
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const nmv_component *pre_comp = &pre_fc->comps[i];
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const nmv_component_counts *c = &counts->comps[i];
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comp->sign = av1_mode_mv_merge_probs(pre_comp->sign, c->sign);
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aom_tree_merge_probs(av1_mv_class_tree, pre_comp->classes, c->classes,
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comp->classes);
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aom_tree_merge_probs(av1_mv_class0_tree, pre_comp->class0, c->class0,
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comp->class0);
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for (j = 0; j < MV_OFFSET_BITS; ++j)
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comp->bits[j] = av1_mode_mv_merge_probs(pre_comp->bits[j], c->bits[j]);
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for (j = 0; j < CLASS0_SIZE; ++j)
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aom_tree_merge_probs(av1_mv_fp_tree, pre_comp->class0_fp[j],
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c->class0_fp[j], comp->class0_fp[j]);
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aom_tree_merge_probs(av1_mv_fp_tree, pre_comp->fp, c->fp, comp->fp);
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if (allow_hp) {
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comp->class0_hp =
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av1_mode_mv_merge_probs(pre_comp->class0_hp, c->class0_hp);
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comp->hp = av1_mode_mv_merge_probs(pre_comp->hp, c->hp);
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}
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}
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}
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#else
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nmv_context *fc = &cm->fc->nmvc;
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const nmv_context *pre_fc = &cm->frame_contexts[cm->frame_context_idx].nmvc;
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const nmv_context_counts *counts = &cm->counts.mv;
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aom_tree_merge_probs(av1_mv_joint_tree, pre_fc->joints, counts->joints,
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fc->joints);
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for (i = 0; i < 2; ++i) {
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nmv_component *comp = &fc->comps[i];
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const nmv_component *pre_comp = &pre_fc->comps[i];
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const nmv_component_counts *c = &counts->comps[i];
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comp->sign = av1_mode_mv_merge_probs(pre_comp->sign, c->sign);
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aom_tree_merge_probs(av1_mv_class_tree, pre_comp->classes, c->classes,
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comp->classes);
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aom_tree_merge_probs(av1_mv_class0_tree, pre_comp->class0, c->class0,
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comp->class0);
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for (j = 0; j < MV_OFFSET_BITS; ++j)
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comp->bits[j] = av1_mode_mv_merge_probs(pre_comp->bits[j], c->bits[j]);
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for (j = 0; j < CLASS0_SIZE; ++j)
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aom_tree_merge_probs(av1_mv_fp_tree, pre_comp->class0_fp[j],
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c->class0_fp[j], comp->class0_fp[j]);
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aom_tree_merge_probs(av1_mv_fp_tree, pre_comp->fp, c->fp, comp->fp);
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if (allow_hp) {
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comp->class0_hp =
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av1_mode_mv_merge_probs(pre_comp->class0_hp, c->class0_hp);
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comp->hp = av1_mode_mv_merge_probs(pre_comp->hp, c->hp);
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}
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}
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#endif
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}
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#if CONFIG_EC_MULTISYMBOL
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void av1_set_mv_cdfs(nmv_context *ctx) {
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int i;
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int j;
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av1_tree_to_cdf(av1_mv_joint_tree, ctx->joints, ctx->joint_cdf);
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for (i = 0; i < 2; ++i) {
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nmv_component *const comp_ctx = &ctx->comps[i];
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av1_tree_to_cdf(av1_mv_class_tree, comp_ctx->classes, comp_ctx->class_cdf);
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for (j = 0; j < CLASS0_SIZE; ++j) {
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av1_tree_to_cdf(av1_mv_fp_tree, comp_ctx->class0_fp[j],
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comp_ctx->class0_fp_cdf[j]);
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}
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av1_tree_to_cdf(av1_mv_fp_tree, comp_ctx->fp, comp_ctx->fp_cdf);
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}
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}
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#endif
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void av1_init_mv_probs(AV1_COMMON *cm) {
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#if CONFIG_REF_MV
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int i;
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for (i = 0; i < NMV_CONTEXTS; ++i) cm->fc->nmvc[i] = default_nmv_context;
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#else
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cm->fc->nmvc = default_nmv_context;
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#if CONFIG_EC_MULTISYMBOL
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av1_set_mv_cdfs(&cm->fc->nmvc);
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#endif
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#endif
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#if CONFIG_GLOBAL_MOTION
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av1_copy(cm->fc->global_motion_types_prob, default_global_motion_types_prob);
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#endif // CONFIG_GLOBAL_MOTION
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}
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