815189613b
Removing special case handling from vp9_tree_probs_from_distribution(), tree_merge_probs(), and vp9_tokens_from_tree_offset() functions. Replacing inter_mode_offset() function with macro INTER_OFFSET which is used now for vp9_inter_mode_tree definition. Change-Id: Iff75a1499d460beb949ece543389c8754deaf178
362 lines
14 KiB
C
362 lines
14 KiB
C
/*
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* Copyright (c) 2010 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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#include "vp9/common/vp9_entropy.h"
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#include "vp9/common/vp9_blockd.h"
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#include "vp9/common/vp9_onyxc_int.h"
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#include "vp9/common/vp9_entropymode.h"
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#include "vpx_mem/vpx_mem.h"
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#include "vpx/vpx_integer.h"
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#define MODEL_NODES (ENTROPY_NODES - UNCONSTRAINED_NODES)
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DECLARE_ALIGNED(16, const uint8_t, vp9_norm[256]) = {
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0, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,
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3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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DECLARE_ALIGNED(16, const uint8_t,
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vp9_coefband_trans_8x8plus[MAXBAND_INDEX + 1]) = {
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0, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4,
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4, 4, 4, 4, 4, 5
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};
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DECLARE_ALIGNED(16, const uint8_t,
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vp9_coefband_trans_4x4[MAXBAND_INDEX + 1]) = {
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0, 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 5, 5, 5,
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5, 5, 5, 5, 5, 5
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};
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DECLARE_ALIGNED(16, const uint8_t, vp9_pt_energy_class[MAX_ENTROPY_TOKENS]) = {
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0, 1, 2, 3, 3, 4, 4, 5, 5, 5, 5, 5
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};
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/* Array indices are identical to previously-existing CONTEXT_NODE indices */
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const vp9_tree_index vp9_coef_tree[TREE_SIZE(MAX_ENTROPY_TOKENS)] = {
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-DCT_EOB_TOKEN, 2, /* 0 = EOB */
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-ZERO_TOKEN, 4, /* 1 = ZERO */
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-ONE_TOKEN, 6, /* 2 = ONE */
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8, 12, /* 3 = LOW_VAL */
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-TWO_TOKEN, 10, /* 4 = TWO */
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-THREE_TOKEN, -FOUR_TOKEN, /* 5 = THREE */
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14, 16, /* 6 = HIGH_LOW */
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-DCT_VAL_CATEGORY1, -DCT_VAL_CATEGORY2, /* 7 = CAT_ONE */
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18, 20, /* 8 = CAT_THREEFOUR */
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-DCT_VAL_CATEGORY3, -DCT_VAL_CATEGORY4, /* 9 = CAT_THREE */
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-DCT_VAL_CATEGORY5, -DCT_VAL_CATEGORY6 /* 10 = CAT_FIVE */
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};
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struct vp9_token vp9_coef_encodings[MAX_ENTROPY_TOKENS];
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/* Trees for extra bits. Probabilities are constant and
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do not depend on previously encoded bits */
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static const vp9_prob Pcat1[] = { 159};
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static const vp9_prob Pcat2[] = { 165, 145};
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static const vp9_prob Pcat3[] = { 173, 148, 140};
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static const vp9_prob Pcat4[] = { 176, 155, 140, 135};
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static const vp9_prob Pcat5[] = { 180, 157, 141, 134, 130};
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static const vp9_prob Pcat6[] = {
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254, 254, 254, 252, 249, 243, 230, 196, 177, 153, 140, 133, 130, 129
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};
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const vp9_tree_index vp9_coefmodel_tree[6] = {
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-DCT_EOB_MODEL_TOKEN, 2, /* 0 = EOB */
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-ZERO_TOKEN, 4, /* 1 = ZERO */
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-ONE_TOKEN, -TWO_TOKEN,
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};
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// Model obtained from a 2-sided zero-centerd distribuition derived
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// from a Pareto distribution. The cdf of the distribution is:
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// cdf(x) = 0.5 + 0.5 * sgn(x) * [1 - {alpha/(alpha + |x|)} ^ beta]
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//
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// For a given beta and a given probablity of the 1-node, the alpha
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// is first solved, and then the {alpha, beta} pair is used to generate
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// the probabilities for the rest of the nodes.
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// beta = 8
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static const vp9_prob modelcoefprobs_pareto8[COEFPROB_MODELS][MODEL_NODES] = {
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{ 3, 86, 128, 6, 86, 23, 88, 29},
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{ 9, 86, 129, 17, 88, 61, 94, 76},
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{ 15, 87, 129, 28, 89, 93, 100, 110},
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{ 20, 88, 130, 38, 91, 118, 106, 136},
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{ 26, 89, 131, 48, 92, 139, 111, 156},
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{ 31, 90, 131, 58, 94, 156, 117, 171},
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{ 37, 90, 132, 66, 95, 171, 122, 184},
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{ 42, 91, 132, 75, 97, 183, 127, 194},
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{ 47, 92, 133, 83, 98, 193, 132, 202},
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{ 52, 93, 133, 90, 100, 201, 137, 208},
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{ 57, 94, 134, 98, 101, 208, 142, 214},
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{ 62, 94, 135, 105, 103, 214, 146, 218},
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{ 66, 95, 135, 111, 104, 219, 151, 222},
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{ 71, 96, 136, 117, 106, 224, 155, 225},
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{ 76, 97, 136, 123, 107, 227, 159, 228},
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{ 80, 98, 137, 129, 109, 231, 162, 231},
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{ 84, 98, 138, 134, 110, 234, 166, 233},
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{ 89, 99, 138, 140, 112, 236, 170, 235},
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{ 93, 100, 139, 145, 113, 238, 173, 236},
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{ 97, 101, 140, 149, 115, 240, 176, 238},
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{101, 102, 140, 154, 116, 242, 179, 239},
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{105, 103, 141, 158, 118, 243, 182, 240},
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{109, 104, 141, 162, 119, 244, 185, 241},
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{113, 104, 142, 166, 120, 245, 187, 242},
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{116, 105, 143, 170, 122, 246, 190, 243},
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{120, 106, 143, 173, 123, 247, 192, 244},
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{123, 107, 144, 177, 125, 248, 195, 244},
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{127, 108, 145, 180, 126, 249, 197, 245},
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{130, 109, 145, 183, 128, 249, 199, 245},
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{134, 110, 146, 186, 129, 250, 201, 246},
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{137, 111, 147, 189, 131, 251, 203, 246},
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{140, 112, 147, 192, 132, 251, 205, 247},
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{143, 113, 148, 194, 133, 251, 207, 247},
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{146, 114, 149, 197, 135, 252, 208, 248},
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{149, 115, 149, 199, 136, 252, 210, 248},
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{152, 115, 150, 201, 138, 252, 211, 248},
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{155, 116, 151, 204, 139, 253, 213, 249},
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{158, 117, 151, 206, 140, 253, 214, 249},
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{161, 118, 152, 208, 142, 253, 216, 249},
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{163, 119, 153, 210, 143, 253, 217, 249},
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{166, 120, 153, 212, 144, 254, 218, 250},
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{168, 121, 154, 213, 146, 254, 220, 250},
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{171, 122, 155, 215, 147, 254, 221, 250},
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{173, 123, 155, 217, 148, 254, 222, 250},
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{176, 124, 156, 218, 150, 254, 223, 250},
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{178, 125, 157, 220, 151, 254, 224, 251},
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{180, 126, 157, 221, 152, 254, 225, 251},
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{183, 127, 158, 222, 153, 254, 226, 251},
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{185, 128, 159, 224, 155, 255, 227, 251},
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{187, 129, 160, 225, 156, 255, 228, 251},
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{189, 131, 160, 226, 157, 255, 228, 251},
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{191, 132, 161, 227, 159, 255, 229, 251},
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{193, 133, 162, 228, 160, 255, 230, 252},
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{195, 134, 163, 230, 161, 255, 231, 252},
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{197, 135, 163, 231, 162, 255, 231, 252},
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{199, 136, 164, 232, 163, 255, 232, 252},
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{201, 137, 165, 233, 165, 255, 233, 252},
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{202, 138, 166, 233, 166, 255, 233, 252},
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{204, 139, 166, 234, 167, 255, 234, 252},
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{206, 140, 167, 235, 168, 255, 235, 252},
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{207, 141, 168, 236, 169, 255, 235, 252},
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{209, 142, 169, 237, 171, 255, 236, 252},
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{210, 144, 169, 237, 172, 255, 236, 252},
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{212, 145, 170, 238, 173, 255, 237, 252},
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{214, 146, 171, 239, 174, 255, 237, 253},
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{215, 147, 172, 240, 175, 255, 238, 253},
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{216, 148, 173, 240, 176, 255, 238, 253},
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{218, 149, 173, 241, 177, 255, 239, 253},
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{219, 150, 174, 241, 179, 255, 239, 253},
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{220, 152, 175, 242, 180, 255, 240, 253},
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{222, 153, 176, 242, 181, 255, 240, 253},
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{223, 154, 177, 243, 182, 255, 240, 253},
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{224, 155, 178, 244, 183, 255, 241, 253},
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{225, 156, 178, 244, 184, 255, 241, 253},
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{226, 158, 179, 244, 185, 255, 242, 253},
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{228, 159, 180, 245, 186, 255, 242, 253},
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{229, 160, 181, 245, 187, 255, 242, 253},
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{230, 161, 182, 246, 188, 255, 243, 253},
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{231, 163, 183, 246, 189, 255, 243, 253},
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{232, 164, 184, 247, 190, 255, 243, 253},
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{233, 165, 185, 247, 191, 255, 244, 253},
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{234, 166, 185, 247, 192, 255, 244, 253},
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{235, 168, 186, 248, 193, 255, 244, 253},
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{236, 169, 187, 248, 194, 255, 244, 253},
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{236, 170, 188, 248, 195, 255, 245, 253},
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{237, 171, 189, 249, 196, 255, 245, 254},
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{238, 173, 190, 249, 197, 255, 245, 254},
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{239, 174, 191, 249, 198, 255, 245, 254},
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{240, 175, 192, 249, 199, 255, 246, 254},
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{240, 177, 193, 250, 200, 255, 246, 254},
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{241, 178, 194, 250, 201, 255, 246, 254},
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{242, 179, 195, 250, 202, 255, 246, 254},
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{242, 181, 196, 250, 203, 255, 247, 254},
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{243, 182, 197, 251, 204, 255, 247, 254},
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{244, 184, 198, 251, 205, 255, 247, 254},
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{244, 185, 199, 251, 206, 255, 247, 254},
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{245, 186, 200, 251, 207, 255, 247, 254},
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{246, 188, 201, 252, 207, 255, 248, 254},
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{246, 189, 202, 252, 208, 255, 248, 254},
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{247, 191, 203, 252, 209, 255, 248, 254},
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{247, 192, 204, 252, 210, 255, 248, 254},
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{248, 194, 205, 252, 211, 255, 248, 254},
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{248, 195, 206, 252, 212, 255, 249, 254},
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{249, 197, 207, 253, 213, 255, 249, 254},
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{249, 198, 208, 253, 214, 255, 249, 254},
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{250, 200, 210, 253, 215, 255, 249, 254},
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{250, 201, 211, 253, 215, 255, 249, 254},
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{250, 203, 212, 253, 216, 255, 249, 254},
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{251, 204, 213, 253, 217, 255, 250, 254},
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{251, 206, 214, 254, 218, 255, 250, 254},
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{252, 207, 216, 254, 219, 255, 250, 254},
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{252, 209, 217, 254, 220, 255, 250, 254},
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{252, 211, 218, 254, 221, 255, 250, 254},
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{253, 213, 219, 254, 222, 255, 250, 254},
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{253, 214, 221, 254, 223, 255, 250, 254},
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{253, 216, 222, 254, 224, 255, 251, 254},
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{253, 218, 224, 254, 225, 255, 251, 254},
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{254, 220, 225, 254, 225, 255, 251, 254},
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{254, 222, 227, 255, 226, 255, 251, 254},
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{254, 224, 228, 255, 227, 255, 251, 254},
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{254, 226, 230, 255, 228, 255, 251, 254},
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{255, 228, 231, 255, 230, 255, 251, 254},
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{255, 230, 233, 255, 231, 255, 252, 254},
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{255, 232, 235, 255, 232, 255, 252, 254},
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{255, 235, 237, 255, 233, 255, 252, 254},
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{255, 238, 240, 255, 235, 255, 252, 255},
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{255, 241, 243, 255, 236, 255, 252, 254},
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{255, 246, 247, 255, 239, 255, 253, 255}
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};
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static void extend_model_to_full_distribution(vp9_prob p,
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vp9_prob *tree_probs) {
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const int l = (p - 1) / 2;
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const vp9_prob (*model)[MODEL_NODES] = modelcoefprobs_pareto8;
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if (p & 1) {
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vpx_memcpy(tree_probs + UNCONSTRAINED_NODES,
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model[l], MODEL_NODES * sizeof(vp9_prob));
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} else {
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// interpolate
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int i;
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for (i = UNCONSTRAINED_NODES; i < ENTROPY_NODES; ++i)
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tree_probs[i] = (model[l][i - UNCONSTRAINED_NODES] +
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model[l + 1][i - UNCONSTRAINED_NODES]) >> 1;
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}
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}
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void vp9_model_to_full_probs(const vp9_prob *model, vp9_prob *full) {
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if (full != model)
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vpx_memcpy(full, model, sizeof(vp9_prob) * UNCONSTRAINED_NODES);
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extend_model_to_full_distribution(model[PIVOT_NODE], full);
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}
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static vp9_tree_index cat1[2], cat2[4], cat3[6], cat4[8], cat5[10], cat6[28];
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static void init_bit_tree(vp9_tree_index *p, int n) {
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int i = 0;
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while (++i < n) {
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p[0] = p[1] = i << 1;
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p += 2;
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}
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p[0] = p[1] = 0;
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}
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static void init_bit_trees() {
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init_bit_tree(cat1, 1);
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init_bit_tree(cat2, 2);
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init_bit_tree(cat3, 3);
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init_bit_tree(cat4, 4);
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init_bit_tree(cat5, 5);
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init_bit_tree(cat6, 14);
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}
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const vp9_extra_bit vp9_extra_bits[MAX_ENTROPY_TOKENS] = {
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{ 0, 0, 0, 0},
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{ 0, 0, 0, 1},
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{ 0, 0, 0, 2},
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{ 0, 0, 0, 3},
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{ 0, 0, 0, 4},
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{ cat1, Pcat1, 1, 5},
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{ cat2, Pcat2, 2, 7},
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{ cat3, Pcat3, 3, 11},
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{ cat4, Pcat4, 4, 19},
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{ cat5, Pcat5, 5, 35},
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{ cat6, Pcat6, 14, 67},
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{ 0, 0, 0, 0}
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};
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#include "vp9/common/vp9_default_coef_probs.h"
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void vp9_default_coef_probs(VP9_COMMON *cm) {
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vp9_copy(cm->fc.coef_probs[TX_4X4], default_coef_probs_4x4);
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vp9_copy(cm->fc.coef_probs[TX_8X8], default_coef_probs_8x8);
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vp9_copy(cm->fc.coef_probs[TX_16X16], default_coef_probs_16x16);
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vp9_copy(cm->fc.coef_probs[TX_32X32], default_coef_probs_32x32);
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}
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void vp9_coef_tree_initialize() {
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init_bit_trees();
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vp9_tokens_from_tree(vp9_coef_encodings, vp9_coef_tree);
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}
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// #define COEF_COUNT_TESTING
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#define COEF_COUNT_SAT 24
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#define COEF_MAX_UPDATE_FACTOR 112
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#define COEF_COUNT_SAT_KEY 24
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#define COEF_MAX_UPDATE_FACTOR_KEY 112
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#define COEF_COUNT_SAT_AFTER_KEY 24
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#define COEF_MAX_UPDATE_FACTOR_AFTER_KEY 128
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static void adapt_coef_probs(VP9_COMMON *cm, TX_SIZE tx_size,
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unsigned int count_sat,
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unsigned int update_factor) {
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const FRAME_CONTEXT *pre_fc = &cm->frame_contexts[cm->frame_context_idx];
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vp9_coeff_probs_model *dst_coef_probs = cm->fc.coef_probs[tx_size];
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const vp9_coeff_probs_model *pre_coef_probs = pre_fc->coef_probs[tx_size];
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vp9_coeff_count_model *coef_counts = cm->counts.coef[tx_size];
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unsigned int (*eob_branch_count)[REF_TYPES][COEF_BANDS][PREV_COEF_CONTEXTS] =
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cm->counts.eob_branch[tx_size];
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int i, j, k, l, m;
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unsigned int branch_ct[UNCONSTRAINED_NODES][2];
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for (i = 0; i < BLOCK_TYPES; ++i)
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for (j = 0; j < REF_TYPES; ++j)
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for (k = 0; k < COEF_BANDS; ++k)
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for (l = 0; l < PREV_COEF_CONTEXTS; ++l) {
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if (l >= 3 && k == 0)
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continue;
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vp9_tree_probs_from_distribution(vp9_coefmodel_tree, branch_ct,
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coef_counts[i][j][k][l]);
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branch_ct[0][1] = eob_branch_count[i][j][k][l] - branch_ct[0][0];
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for (m = 0; m < UNCONSTRAINED_NODES; ++m)
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dst_coef_probs[i][j][k][l][m] = merge_probs(
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pre_coef_probs[i][j][k][l][m],
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branch_ct[m],
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count_sat, update_factor);
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}
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}
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void vp9_adapt_coef_probs(VP9_COMMON *cm) {
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TX_SIZE t;
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unsigned int count_sat, update_factor;
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if (frame_is_intra_only(cm)) {
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update_factor = COEF_MAX_UPDATE_FACTOR_KEY;
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count_sat = COEF_COUNT_SAT_KEY;
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} else if (cm->last_frame_type == KEY_FRAME) {
|
|
update_factor = COEF_MAX_UPDATE_FACTOR_AFTER_KEY; /* adapt quickly */
|
|
count_sat = COEF_COUNT_SAT_AFTER_KEY;
|
|
} else {
|
|
update_factor = COEF_MAX_UPDATE_FACTOR;
|
|
count_sat = COEF_COUNT_SAT;
|
|
}
|
|
for (t = TX_4X4; t <= TX_32X32; t++)
|
|
adapt_coef_probs(cm, t, count_sat, update_factor);
|
|
}
|