948 lines
42 KiB
C++
948 lines
42 KiB
C++
// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <algorithm> // for std::copy
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#include <numeric>
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#include "common/assert.h"
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#include "video_core/host1x/codecs/vp9.h"
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#include "video_core/host1x/host1x.h"
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#include "video_core/memory_manager.h"
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namespace Tegra::Decoder {
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namespace {
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constexpr u32 diff_update_probability = 252;
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constexpr u32 frame_sync_code = 0x498342;
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// Default compressed header probabilities once frame context resets
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constexpr Vp9EntropyProbs default_probs{
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.y_mode_prob{
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65, 32, 18, 144, 162, 194, 41, 51, 98, 132, 68, 18, 165, 217, 196, 45, 40, 78,
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173, 80, 19, 176, 240, 193, 64, 35, 46, 221, 135, 38, 194, 248, 121, 96, 85, 29,
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},
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.partition_prob{
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199, 122, 141, 0, 147, 63, 159, 0, 148, 133, 118, 0, 121, 104, 114, 0,
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174, 73, 87, 0, 92, 41, 83, 0, 82, 99, 50, 0, 53, 39, 39, 0,
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177, 58, 59, 0, 68, 26, 63, 0, 52, 79, 25, 0, 17, 14, 12, 0,
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222, 34, 30, 0, 72, 16, 44, 0, 58, 32, 12, 0, 10, 7, 6, 0,
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},
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.coef_probs{
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195, 29, 183, 84, 49, 136, 8, 42, 71, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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31, 107, 169, 35, 99, 159, 17, 82, 140, 8, 66, 114, 2, 44, 76, 1, 19, 32,
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40, 132, 201, 29, 114, 187, 13, 91, 157, 7, 75, 127, 3, 58, 95, 1, 28, 47,
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69, 142, 221, 42, 122, 201, 15, 91, 159, 6, 67, 121, 1, 42, 77, 1, 17, 31,
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102, 148, 228, 67, 117, 204, 17, 82, 154, 6, 59, 114, 2, 39, 75, 1, 15, 29,
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156, 57, 233, 119, 57, 212, 58, 48, 163, 29, 40, 124, 12, 30, 81, 3, 12, 31,
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191, 107, 226, 124, 117, 204, 25, 99, 155, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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29, 148, 210, 37, 126, 194, 8, 93, 157, 2, 68, 118, 1, 39, 69, 1, 17, 33,
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41, 151, 213, 27, 123, 193, 3, 82, 144, 1, 58, 105, 1, 32, 60, 1, 13, 26,
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59, 159, 220, 23, 126, 198, 4, 88, 151, 1, 66, 114, 1, 38, 71, 1, 18, 34,
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114, 136, 232, 51, 114, 207, 11, 83, 155, 3, 56, 105, 1, 33, 65, 1, 17, 34,
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149, 65, 234, 121, 57, 215, 61, 49, 166, 28, 36, 114, 12, 25, 76, 3, 16, 42,
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214, 49, 220, 132, 63, 188, 42, 65, 137, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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85, 137, 221, 104, 131, 216, 49, 111, 192, 21, 87, 155, 2, 49, 87, 1, 16, 28,
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89, 163, 230, 90, 137, 220, 29, 100, 183, 10, 70, 135, 2, 42, 81, 1, 17, 33,
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108, 167, 237, 55, 133, 222, 15, 97, 179, 4, 72, 135, 1, 45, 85, 1, 19, 38,
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124, 146, 240, 66, 124, 224, 17, 88, 175, 4, 58, 122, 1, 36, 75, 1, 18, 37,
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141, 79, 241, 126, 70, 227, 66, 58, 182, 30, 44, 136, 12, 34, 96, 2, 20, 47,
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229, 99, 249, 143, 111, 235, 46, 109, 192, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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82, 158, 236, 94, 146, 224, 25, 117, 191, 9, 87, 149, 3, 56, 99, 1, 33, 57,
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83, 167, 237, 68, 145, 222, 10, 103, 177, 2, 72, 131, 1, 41, 79, 1, 20, 39,
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99, 167, 239, 47, 141, 224, 10, 104, 178, 2, 73, 133, 1, 44, 85, 1, 22, 47,
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127, 145, 243, 71, 129, 228, 17, 93, 177, 3, 61, 124, 1, 41, 84, 1, 21, 52,
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157, 78, 244, 140, 72, 231, 69, 58, 184, 31, 44, 137, 14, 38, 105, 8, 23, 61,
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125, 34, 187, 52, 41, 133, 6, 31, 56, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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37, 109, 153, 51, 102, 147, 23, 87, 128, 8, 67, 101, 1, 41, 63, 1, 19, 29,
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31, 154, 185, 17, 127, 175, 6, 96, 145, 2, 73, 114, 1, 51, 82, 1, 28, 45,
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23, 163, 200, 10, 131, 185, 2, 93, 148, 1, 67, 111, 1, 41, 69, 1, 14, 24,
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29, 176, 217, 12, 145, 201, 3, 101, 156, 1, 69, 111, 1, 39, 63, 1, 14, 23,
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57, 192, 233, 25, 154, 215, 6, 109, 167, 3, 78, 118, 1, 48, 69, 1, 21, 29,
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202, 105, 245, 108, 106, 216, 18, 90, 144, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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33, 172, 219, 64, 149, 206, 14, 117, 177, 5, 90, 141, 2, 61, 95, 1, 37, 57,
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33, 179, 220, 11, 140, 198, 1, 89, 148, 1, 60, 104, 1, 33, 57, 1, 12, 21,
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30, 181, 221, 8, 141, 198, 1, 87, 145, 1, 58, 100, 1, 31, 55, 1, 12, 20,
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32, 186, 224, 7, 142, 198, 1, 86, 143, 1, 58, 100, 1, 31, 55, 1, 12, 22,
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57, 192, 227, 20, 143, 204, 3, 96, 154, 1, 68, 112, 1, 42, 69, 1, 19, 32,
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212, 35, 215, 113, 47, 169, 29, 48, 105, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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74, 129, 203, 106, 120, 203, 49, 107, 178, 19, 84, 144, 4, 50, 84, 1, 15, 25,
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71, 172, 217, 44, 141, 209, 15, 102, 173, 6, 76, 133, 2, 51, 89, 1, 24, 42,
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64, 185, 231, 31, 148, 216, 8, 103, 175, 3, 74, 131, 1, 46, 81, 1, 18, 30,
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65, 196, 235, 25, 157, 221, 5, 105, 174, 1, 67, 120, 1, 38, 69, 1, 15, 30,
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65, 204, 238, 30, 156, 224, 7, 107, 177, 2, 70, 124, 1, 42, 73, 1, 18, 34,
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225, 86, 251, 144, 104, 235, 42, 99, 181, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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85, 175, 239, 112, 165, 229, 29, 136, 200, 12, 103, 162, 6, 77, 123, 2, 53, 84,
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75, 183, 239, 30, 155, 221, 3, 106, 171, 1, 74, 128, 1, 44, 76, 1, 17, 28,
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73, 185, 240, 27, 159, 222, 2, 107, 172, 1, 75, 127, 1, 42, 73, 1, 17, 29,
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62, 190, 238, 21, 159, 222, 2, 107, 172, 1, 72, 122, 1, 40, 71, 1, 18, 32,
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61, 199, 240, 27, 161, 226, 4, 113, 180, 1, 76, 129, 1, 46, 80, 1, 23, 41,
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7, 27, 153, 5, 30, 95, 1, 16, 30, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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50, 75, 127, 57, 75, 124, 27, 67, 108, 10, 54, 86, 1, 33, 52, 1, 12, 18,
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43, 125, 151, 26, 108, 148, 7, 83, 122, 2, 59, 89, 1, 38, 60, 1, 17, 27,
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23, 144, 163, 13, 112, 154, 2, 75, 117, 1, 50, 81, 1, 31, 51, 1, 14, 23,
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18, 162, 185, 6, 123, 171, 1, 78, 125, 1, 51, 86, 1, 31, 54, 1, 14, 23,
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15, 199, 227, 3, 150, 204, 1, 91, 146, 1, 55, 95, 1, 30, 53, 1, 11, 20,
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19, 55, 240, 19, 59, 196, 3, 52, 105, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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41, 166, 207, 104, 153, 199, 31, 123, 181, 14, 101, 152, 5, 72, 106, 1, 36, 52,
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35, 176, 211, 12, 131, 190, 2, 88, 144, 1, 60, 101, 1, 36, 60, 1, 16, 28,
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28, 183, 213, 8, 134, 191, 1, 86, 142, 1, 56, 96, 1, 30, 53, 1, 12, 20,
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20, 190, 215, 4, 135, 192, 1, 84, 139, 1, 53, 91, 1, 28, 49, 1, 11, 20,
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13, 196, 216, 2, 137, 192, 1, 86, 143, 1, 57, 99, 1, 32, 56, 1, 13, 24,
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211, 29, 217, 96, 47, 156, 22, 43, 87, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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78, 120, 193, 111, 116, 186, 46, 102, 164, 15, 80, 128, 2, 49, 76, 1, 18, 28,
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71, 161, 203, 42, 132, 192, 10, 98, 150, 3, 69, 109, 1, 44, 70, 1, 18, 29,
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57, 186, 211, 30, 140, 196, 4, 93, 146, 1, 62, 102, 1, 38, 65, 1, 16, 27,
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47, 199, 217, 14, 145, 196, 1, 88, 142, 1, 57, 98, 1, 36, 62, 1, 15, 26,
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26, 219, 229, 5, 155, 207, 1, 94, 151, 1, 60, 104, 1, 36, 62, 1, 16, 28,
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233, 29, 248, 146, 47, 220, 43, 52, 140, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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100, 163, 232, 179, 161, 222, 63, 142, 204, 37, 113, 174, 26, 89, 137, 18, 68, 97,
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85, 181, 230, 32, 146, 209, 7, 100, 164, 3, 71, 121, 1, 45, 77, 1, 18, 30,
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65, 187, 230, 20, 148, 207, 2, 97, 159, 1, 68, 116, 1, 40, 70, 1, 14, 29,
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40, 194, 227, 8, 147, 204, 1, 94, 155, 1, 65, 112, 1, 39, 66, 1, 14, 26,
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16, 208, 228, 3, 151, 207, 1, 98, 160, 1, 67, 117, 1, 41, 74, 1, 17, 31,
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17, 38, 140, 7, 34, 80, 1, 17, 29, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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37, 75, 128, 41, 76, 128, 26, 66, 116, 12, 52, 94, 2, 32, 55, 1, 10, 16,
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50, 127, 154, 37, 109, 152, 16, 82, 121, 5, 59, 85, 1, 35, 54, 1, 13, 20,
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40, 142, 167, 17, 110, 157, 2, 71, 112, 1, 44, 72, 1, 27, 45, 1, 11, 17,
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30, 175, 188, 9, 124, 169, 1, 74, 116, 1, 48, 78, 1, 30, 49, 1, 11, 18,
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10, 222, 223, 2, 150, 194, 1, 83, 128, 1, 48, 79, 1, 27, 45, 1, 11, 17,
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36, 41, 235, 29, 36, 193, 10, 27, 111, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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85, 165, 222, 177, 162, 215, 110, 135, 195, 57, 113, 168, 23, 83, 120, 10, 49, 61,
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85, 190, 223, 36, 139, 200, 5, 90, 146, 1, 60, 103, 1, 38, 65, 1, 18, 30,
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72, 202, 223, 23, 141, 199, 2, 86, 140, 1, 56, 97, 1, 36, 61, 1, 16, 27,
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55, 218, 225, 13, 145, 200, 1, 86, 141, 1, 57, 99, 1, 35, 61, 1, 13, 22,
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15, 235, 212, 1, 132, 184, 1, 84, 139, 1, 57, 97, 1, 34, 56, 1, 14, 23,
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181, 21, 201, 61, 37, 123, 10, 38, 71, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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47, 106, 172, 95, 104, 173, 42, 93, 159, 18, 77, 131, 4, 50, 81, 1, 17, 23,
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62, 147, 199, 44, 130, 189, 28, 102, 154, 18, 75, 115, 2, 44, 65, 1, 12, 19,
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55, 153, 210, 24, 130, 194, 3, 93, 146, 1, 61, 97, 1, 31, 50, 1, 10, 16,
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49, 186, 223, 17, 148, 204, 1, 96, 142, 1, 53, 83, 1, 26, 44, 1, 11, 17,
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13, 217, 212, 2, 136, 180, 1, 78, 124, 1, 50, 83, 1, 29, 49, 1, 14, 23,
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197, 13, 247, 82, 17, 222, 25, 17, 162, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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126, 186, 247, 234, 191, 243, 176, 177, 234, 104, 158, 220, 66, 128, 186, 55, 90, 137,
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111, 197, 242, 46, 158, 219, 9, 104, 171, 2, 65, 125, 1, 44, 80, 1, 17, 91,
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104, 208, 245, 39, 168, 224, 3, 109, 162, 1, 79, 124, 1, 50, 102, 1, 43, 102,
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84, 220, 246, 31, 177, 231, 2, 115, 180, 1, 79, 134, 1, 55, 77, 1, 60, 79,
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43, 243, 240, 8, 180, 217, 1, 115, 166, 1, 84, 121, 1, 51, 67, 1, 16, 6,
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},
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.switchable_interp_prob{235, 162, 36, 255, 34, 3, 149, 144},
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.inter_mode_prob{
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2, 173, 34, 0, 7, 145, 85, 0, 7, 166, 63, 0, 7, 94,
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66, 0, 8, 64, 46, 0, 17, 81, 31, 0, 25, 29, 30, 0,
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},
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.intra_inter_prob{9, 102, 187, 225},
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.comp_inter_prob{9, 102, 187, 225, 0},
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.single_ref_prob{33, 16, 77, 74, 142, 142, 172, 170, 238, 247},
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.comp_ref_prob{50, 126, 123, 221, 226},
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.tx_32x32_prob{3, 136, 37, 5, 52, 13},
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.tx_16x16_prob{20, 152, 15, 101},
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.tx_8x8_prob{100, 66},
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.skip_probs{192, 128, 64},
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.joints{32, 64, 96},
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.sign{128, 128},
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.classes{
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224, 144, 192, 168, 192, 176, 192, 198, 198, 245,
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216, 128, 176, 160, 176, 176, 192, 198, 198, 208,
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},
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.class_0{216, 208},
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.prob_bits{
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136, 140, 148, 160, 176, 192, 224, 234, 234, 240,
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136, 140, 148, 160, 176, 192, 224, 234, 234, 240,
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},
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.class_0_fr{128, 128, 64, 96, 112, 64, 128, 128, 64, 96, 112, 64},
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.fr{64, 96, 64, 64, 96, 64},
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.class_0_hp{160, 160},
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.high_precision{128, 128},
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};
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constexpr std::array<u8, 256> norm_lut{
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0, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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};
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constexpr std::array<u8, 254> map_lut{
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20, 21, 22, 23, 24, 25, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37,
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1, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 2, 50, 51, 52, 53, 54,
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55, 56, 57, 58, 59, 60, 61, 3, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72,
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73, 4, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 5, 86, 87, 88, 89,
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90, 91, 92, 93, 94, 95, 96, 97, 6, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107,
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108, 109, 7, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 8, 122, 123, 124,
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125, 126, 127, 128, 129, 130, 131, 132, 133, 9, 134, 135, 136, 137, 138, 139, 140, 141, 142,
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143, 144, 145, 10, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 11, 158, 159,
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160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 12, 170, 171, 172, 173, 174, 175, 176, 177,
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178, 179, 180, 181, 13, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 14, 194,
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195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 15, 206, 207, 208, 209, 210, 211, 212,
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213, 214, 215, 216, 217, 16, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 17,
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230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 18, 242, 243, 244, 245, 246, 247,
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248, 249, 250, 251, 252, 253, 19,
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};
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// 6.2.14 Tile size calculation
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[[nodiscard]] s32 CalcMinLog2TileCols(s32 frame_width) {
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const s32 sb64_cols = (frame_width + 63) / 64;
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s32 min_log2 = 0;
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while ((64 << min_log2) < sb64_cols) {
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min_log2++;
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}
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return min_log2;
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}
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[[nodiscard]] s32 CalcMaxLog2TileCols(s32 frame_width) {
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const s32 sb64_cols = (frame_width + 63) / 64;
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s32 max_log2 = 1;
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while ((sb64_cols >> max_log2) >= 4) {
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max_log2++;
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}
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return max_log2 - 1;
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}
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// Recenters probability. Based on section 6.3.6 of VP9 Specification
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[[nodiscard]] s32 RecenterNonNeg(s32 new_prob, s32 old_prob) {
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if (new_prob > old_prob * 2) {
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return new_prob;
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}
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if (new_prob >= old_prob) {
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return (new_prob - old_prob) * 2;
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}
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return (old_prob - new_prob) * 2 - 1;
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}
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// Adjusts old_prob depending on new_prob. Based on section 6.3.5 of VP9 Specification
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[[nodiscard]] s32 RemapProbability(s32 new_prob, s32 old_prob) {
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new_prob--;
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old_prob--;
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std::size_t index{};
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if (old_prob * 2 <= 0xff) {
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index = static_cast<std::size_t>(std::max(0, RecenterNonNeg(new_prob, old_prob) - 1));
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} else {
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index = static_cast<std::size_t>(
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std::max(0, RecenterNonNeg(0xff - 1 - new_prob, 0xff - 1 - old_prob) - 1));
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}
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return static_cast<s32>(map_lut[index]);
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}
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} // Anonymous namespace
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VP9::VP9(Host1x::Host1x& host1x_) : host1x{host1x_} {}
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VP9::~VP9() = default;
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void VP9::WriteProbabilityUpdate(VpxRangeEncoder& writer, u8 new_prob, u8 old_prob) {
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const bool update = new_prob != old_prob;
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writer.Write(update, diff_update_probability);
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if (update) {
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WriteProbabilityDelta(writer, new_prob, old_prob);
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}
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}
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template <typename T, std::size_t N>
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void VP9::WriteProbabilityUpdate(VpxRangeEncoder& writer, const std::array<T, N>& new_prob,
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const std::array<T, N>& old_prob) {
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for (std::size_t offset = 0; offset < new_prob.size(); ++offset) {
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WriteProbabilityUpdate(writer, new_prob[offset], old_prob[offset]);
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}
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}
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template <typename T, std::size_t N>
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void VP9::WriteProbabilityUpdateAligned4(VpxRangeEncoder& writer, const std::array<T, N>& new_prob,
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const std::array<T, N>& old_prob) {
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for (std::size_t offset = 0; offset < new_prob.size(); offset += 4) {
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WriteProbabilityUpdate(writer, new_prob[offset + 0], old_prob[offset + 0]);
|
|
WriteProbabilityUpdate(writer, new_prob[offset + 1], old_prob[offset + 1]);
|
|
WriteProbabilityUpdate(writer, new_prob[offset + 2], old_prob[offset + 2]);
|
|
}
|
|
}
|
|
|
|
void VP9::WriteProbabilityDelta(VpxRangeEncoder& writer, u8 new_prob, u8 old_prob) {
|
|
const int delta = RemapProbability(new_prob, old_prob);
|
|
|
|
EncodeTermSubExp(writer, delta);
|
|
}
|
|
|
|
void VP9::EncodeTermSubExp(VpxRangeEncoder& writer, s32 value) {
|
|
if (WriteLessThan(writer, value, 16)) {
|
|
writer.Write(value, 4);
|
|
} else if (WriteLessThan(writer, value, 32)) {
|
|
writer.Write(value - 16, 4);
|
|
} else if (WriteLessThan(writer, value, 64)) {
|
|
writer.Write(value - 32, 5);
|
|
} else {
|
|
value -= 64;
|
|
|
|
constexpr static s32 size = 8;
|
|
|
|
const s32 mask = (1 << size) - 191;
|
|
|
|
const s32 delta = value - mask;
|
|
|
|
if (delta < 0) {
|
|
writer.Write(value, size - 1);
|
|
} else {
|
|
writer.Write(delta / 2 + mask, size - 1);
|
|
writer.Write(delta & 1, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool VP9::WriteLessThan(VpxRangeEncoder& writer, s32 value, s32 test) {
|
|
const bool is_lt = value < test;
|
|
writer.Write(!is_lt);
|
|
return is_lt;
|
|
}
|
|
|
|
void VP9::WriteCoefProbabilityUpdate(VpxRangeEncoder& writer, s32 tx_mode,
|
|
const std::array<u8, 1728>& new_prob,
|
|
const std::array<u8, 1728>& old_prob) {
|
|
constexpr static u32 block_bytes = 2 * 2 * 6 * 6 * 3;
|
|
|
|
const auto needs_update = [&](u32 base_index) {
|
|
return !std::equal(new_prob.begin() + base_index,
|
|
new_prob.begin() + base_index + block_bytes,
|
|
old_prob.begin() + base_index);
|
|
};
|
|
|
|
for (u32 block_index = 0; block_index < 4; block_index++) {
|
|
const u32 base_index = block_index * block_bytes;
|
|
const bool update = needs_update(base_index);
|
|
writer.Write(update);
|
|
|
|
if (update) {
|
|
u32 index = base_index;
|
|
for (s32 i = 0; i < 2; i++) {
|
|
for (s32 j = 0; j < 2; j++) {
|
|
for (s32 k = 0; k < 6; k++) {
|
|
for (s32 l = 0; l < 6; l++) {
|
|
if (k != 0 || l < 3) {
|
|
WriteProbabilityUpdate(writer, new_prob[index + 0],
|
|
old_prob[index + 0]);
|
|
WriteProbabilityUpdate(writer, new_prob[index + 1],
|
|
old_prob[index + 1]);
|
|
WriteProbabilityUpdate(writer, new_prob[index + 2],
|
|
old_prob[index + 2]);
|
|
}
|
|
index += 3;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (block_index == static_cast<u32>(tx_mode)) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void VP9::WriteMvProbabilityUpdate(VpxRangeEncoder& writer, u8 new_prob, u8 old_prob) {
|
|
const bool update = new_prob != old_prob;
|
|
writer.Write(update, diff_update_probability);
|
|
|
|
if (update) {
|
|
writer.Write(new_prob >> 1, 7);
|
|
}
|
|
}
|
|
|
|
Vp9PictureInfo VP9::GetVp9PictureInfo(const Host1x::NvdecCommon::NvdecRegisters& state) {
|
|
PictureInfo picture_info;
|
|
host1x.MemoryManager().ReadBlock(state.picture_info_offset, &picture_info, sizeof(PictureInfo));
|
|
Vp9PictureInfo vp9_info = picture_info.Convert();
|
|
|
|
InsertEntropy(state.vp9_entropy_probs_offset, vp9_info.entropy);
|
|
|
|
// surface_luma_offset[0:3] contains the address of the reference frame offsets in the following
|
|
// order: last, golden, altref, current.
|
|
std::copy(state.surface_luma_offset.begin(), state.surface_luma_offset.begin() + 4,
|
|
vp9_info.frame_offsets.begin());
|
|
|
|
return vp9_info;
|
|
}
|
|
|
|
void VP9::InsertEntropy(u64 offset, Vp9EntropyProbs& dst) {
|
|
EntropyProbs entropy;
|
|
host1x.MemoryManager().ReadBlock(offset, &entropy, sizeof(EntropyProbs));
|
|
entropy.Convert(dst);
|
|
}
|
|
|
|
Vp9FrameContainer VP9::GetCurrentFrame(const Host1x::NvdecCommon::NvdecRegisters& state) {
|
|
Vp9FrameContainer current_frame{};
|
|
{
|
|
// gpu.SyncGuestHost(); epic, why?
|
|
current_frame.info = GetVp9PictureInfo(state);
|
|
current_frame.bit_stream.resize(current_frame.info.bitstream_size);
|
|
host1x.MemoryManager().ReadBlock(state.frame_bitstream_offset,
|
|
current_frame.bit_stream.data(),
|
|
current_frame.info.bitstream_size);
|
|
}
|
|
if (!next_frame.bit_stream.empty()) {
|
|
Vp9FrameContainer temp{
|
|
.info = current_frame.info,
|
|
.bit_stream = std::move(current_frame.bit_stream),
|
|
};
|
|
next_frame.info.show_frame = current_frame.info.last_frame_shown;
|
|
current_frame.info = next_frame.info;
|
|
current_frame.bit_stream = std::move(next_frame.bit_stream);
|
|
next_frame = std::move(temp);
|
|
} else {
|
|
next_frame.info = current_frame.info;
|
|
next_frame.bit_stream = current_frame.bit_stream;
|
|
}
|
|
return current_frame;
|
|
}
|
|
|
|
std::vector<u8> VP9::ComposeCompressedHeader() {
|
|
VpxRangeEncoder writer{};
|
|
const bool update_probs = !current_frame_info.is_key_frame && current_frame_info.show_frame;
|
|
if (!current_frame_info.lossless) {
|
|
if (static_cast<u32>(current_frame_info.transform_mode) >= 3) {
|
|
writer.Write(3, 2);
|
|
writer.Write(current_frame_info.transform_mode == 4);
|
|
} else {
|
|
writer.Write(current_frame_info.transform_mode, 2);
|
|
}
|
|
}
|
|
|
|
if (current_frame_info.transform_mode == 4) {
|
|
// tx_mode_probs() in the spec
|
|
WriteProbabilityUpdate(writer, current_frame_info.entropy.tx_8x8_prob,
|
|
prev_frame_probs.tx_8x8_prob);
|
|
WriteProbabilityUpdate(writer, current_frame_info.entropy.tx_16x16_prob,
|
|
prev_frame_probs.tx_16x16_prob);
|
|
WriteProbabilityUpdate(writer, current_frame_info.entropy.tx_32x32_prob,
|
|
prev_frame_probs.tx_32x32_prob);
|
|
if (update_probs) {
|
|
prev_frame_probs.tx_8x8_prob = current_frame_info.entropy.tx_8x8_prob;
|
|
prev_frame_probs.tx_16x16_prob = current_frame_info.entropy.tx_16x16_prob;
|
|
prev_frame_probs.tx_32x32_prob = current_frame_info.entropy.tx_32x32_prob;
|
|
}
|
|
}
|
|
// read_coef_probs() in the spec
|
|
WriteCoefProbabilityUpdate(writer, current_frame_info.transform_mode,
|
|
current_frame_info.entropy.coef_probs, prev_frame_probs.coef_probs);
|
|
// read_skip_probs() in the spec
|
|
WriteProbabilityUpdate(writer, current_frame_info.entropy.skip_probs,
|
|
prev_frame_probs.skip_probs);
|
|
|
|
if (update_probs) {
|
|
prev_frame_probs.coef_probs = current_frame_info.entropy.coef_probs;
|
|
prev_frame_probs.skip_probs = current_frame_info.entropy.skip_probs;
|
|
}
|
|
|
|
if (!current_frame_info.intra_only) {
|
|
// read_inter_probs() in the spec
|
|
WriteProbabilityUpdateAligned4(writer, current_frame_info.entropy.inter_mode_prob,
|
|
prev_frame_probs.inter_mode_prob);
|
|
|
|
if (current_frame_info.interp_filter == 4) {
|
|
// read_interp_filter_probs() in the spec
|
|
WriteProbabilityUpdate(writer, current_frame_info.entropy.switchable_interp_prob,
|
|
prev_frame_probs.switchable_interp_prob);
|
|
if (update_probs) {
|
|
prev_frame_probs.switchable_interp_prob =
|
|
current_frame_info.entropy.switchable_interp_prob;
|
|
}
|
|
}
|
|
|
|
// read_is_inter_probs() in the spec
|
|
WriteProbabilityUpdate(writer, current_frame_info.entropy.intra_inter_prob,
|
|
prev_frame_probs.intra_inter_prob);
|
|
|
|
// frame_reference_mode() in the spec
|
|
if ((current_frame_info.ref_frame_sign_bias[1] & 1) !=
|
|
(current_frame_info.ref_frame_sign_bias[2] & 1) ||
|
|
(current_frame_info.ref_frame_sign_bias[1] & 1) !=
|
|
(current_frame_info.ref_frame_sign_bias[3] & 1)) {
|
|
if (current_frame_info.reference_mode >= 1) {
|
|
writer.Write(1, 1);
|
|
writer.Write(current_frame_info.reference_mode == 2);
|
|
} else {
|
|
writer.Write(0, 1);
|
|
}
|
|
}
|
|
|
|
// frame_reference_mode_probs() in the spec
|
|
if (current_frame_info.reference_mode == 2) {
|
|
WriteProbabilityUpdate(writer, current_frame_info.entropy.comp_inter_prob,
|
|
prev_frame_probs.comp_inter_prob);
|
|
if (update_probs) {
|
|
prev_frame_probs.comp_inter_prob = current_frame_info.entropy.comp_inter_prob;
|
|
}
|
|
}
|
|
|
|
if (current_frame_info.reference_mode != 1) {
|
|
WriteProbabilityUpdate(writer, current_frame_info.entropy.single_ref_prob,
|
|
prev_frame_probs.single_ref_prob);
|
|
if (update_probs) {
|
|
prev_frame_probs.single_ref_prob = current_frame_info.entropy.single_ref_prob;
|
|
}
|
|
}
|
|
|
|
if (current_frame_info.reference_mode != 0) {
|
|
WriteProbabilityUpdate(writer, current_frame_info.entropy.comp_ref_prob,
|
|
prev_frame_probs.comp_ref_prob);
|
|
if (update_probs) {
|
|
prev_frame_probs.comp_ref_prob = current_frame_info.entropy.comp_ref_prob;
|
|
}
|
|
}
|
|
|
|
// read_y_mode_probs
|
|
for (std::size_t index = 0; index < current_frame_info.entropy.y_mode_prob.size();
|
|
++index) {
|
|
WriteProbabilityUpdate(writer, current_frame_info.entropy.y_mode_prob[index],
|
|
prev_frame_probs.y_mode_prob[index]);
|
|
}
|
|
|
|
// read_partition_probs
|
|
WriteProbabilityUpdateAligned4(writer, current_frame_info.entropy.partition_prob,
|
|
prev_frame_probs.partition_prob);
|
|
|
|
// mv_probs
|
|
for (s32 i = 0; i < 3; i++) {
|
|
WriteMvProbabilityUpdate(writer, current_frame_info.entropy.joints[i],
|
|
prev_frame_probs.joints[i]);
|
|
}
|
|
if (update_probs) {
|
|
prev_frame_probs.inter_mode_prob = current_frame_info.entropy.inter_mode_prob;
|
|
prev_frame_probs.intra_inter_prob = current_frame_info.entropy.intra_inter_prob;
|
|
prev_frame_probs.y_mode_prob = current_frame_info.entropy.y_mode_prob;
|
|
prev_frame_probs.partition_prob = current_frame_info.entropy.partition_prob;
|
|
prev_frame_probs.joints = current_frame_info.entropy.joints;
|
|
}
|
|
|
|
for (s32 i = 0; i < 2; i++) {
|
|
WriteMvProbabilityUpdate(writer, current_frame_info.entropy.sign[i],
|
|
prev_frame_probs.sign[i]);
|
|
for (s32 j = 0; j < 10; j++) {
|
|
const int index = i * 10 + j;
|
|
WriteMvProbabilityUpdate(writer, current_frame_info.entropy.classes[index],
|
|
prev_frame_probs.classes[index]);
|
|
}
|
|
WriteMvProbabilityUpdate(writer, current_frame_info.entropy.class_0[i],
|
|
prev_frame_probs.class_0[i]);
|
|
|
|
for (s32 j = 0; j < 10; j++) {
|
|
const int index = i * 10 + j;
|
|
WriteMvProbabilityUpdate(writer, current_frame_info.entropy.prob_bits[index],
|
|
prev_frame_probs.prob_bits[index]);
|
|
}
|
|
}
|
|
|
|
for (s32 i = 0; i < 2; i++) {
|
|
for (s32 j = 0; j < 2; j++) {
|
|
for (s32 k = 0; k < 3; k++) {
|
|
const int index = i * 2 * 3 + j * 3 + k;
|
|
WriteMvProbabilityUpdate(writer, current_frame_info.entropy.class_0_fr[index],
|
|
prev_frame_probs.class_0_fr[index]);
|
|
}
|
|
}
|
|
|
|
for (s32 j = 0; j < 3; j++) {
|
|
const int index = i * 3 + j;
|
|
WriteMvProbabilityUpdate(writer, current_frame_info.entropy.fr[index],
|
|
prev_frame_probs.fr[index]);
|
|
}
|
|
}
|
|
|
|
if (current_frame_info.allow_high_precision_mv) {
|
|
for (s32 index = 0; index < 2; index++) {
|
|
WriteMvProbabilityUpdate(writer, current_frame_info.entropy.class_0_hp[index],
|
|
prev_frame_probs.class_0_hp[index]);
|
|
WriteMvProbabilityUpdate(writer, current_frame_info.entropy.high_precision[index],
|
|
prev_frame_probs.high_precision[index]);
|
|
}
|
|
}
|
|
|
|
// save previous probs
|
|
if (update_probs) {
|
|
prev_frame_probs.sign = current_frame_info.entropy.sign;
|
|
prev_frame_probs.classes = current_frame_info.entropy.classes;
|
|
prev_frame_probs.class_0 = current_frame_info.entropy.class_0;
|
|
prev_frame_probs.prob_bits = current_frame_info.entropy.prob_bits;
|
|
prev_frame_probs.class_0_fr = current_frame_info.entropy.class_0_fr;
|
|
prev_frame_probs.fr = current_frame_info.entropy.fr;
|
|
prev_frame_probs.class_0_hp = current_frame_info.entropy.class_0_hp;
|
|
prev_frame_probs.high_precision = current_frame_info.entropy.high_precision;
|
|
}
|
|
}
|
|
writer.End();
|
|
return writer.GetBuffer();
|
|
}
|
|
|
|
VpxBitStreamWriter VP9::ComposeUncompressedHeader() {
|
|
VpxBitStreamWriter uncomp_writer{};
|
|
|
|
uncomp_writer.WriteU(2, 2); // Frame marker.
|
|
uncomp_writer.WriteU(0, 2); // Profile.
|
|
uncomp_writer.WriteBit(false); // Show existing frame.
|
|
uncomp_writer.WriteBit(!current_frame_info.is_key_frame); // is key frame?
|
|
uncomp_writer.WriteBit(current_frame_info.show_frame); // show frame?
|
|
uncomp_writer.WriteBit(current_frame_info.error_resilient_mode); // error reslience
|
|
|
|
if (current_frame_info.is_key_frame) {
|
|
uncomp_writer.WriteU(frame_sync_code, 24);
|
|
uncomp_writer.WriteU(0, 3); // Color space.
|
|
uncomp_writer.WriteU(0, 1); // Color range.
|
|
uncomp_writer.WriteU(current_frame_info.frame_size.width - 1, 16);
|
|
uncomp_writer.WriteU(current_frame_info.frame_size.height - 1, 16);
|
|
uncomp_writer.WriteBit(false); // Render and frame size different.
|
|
|
|
// Reset context
|
|
prev_frame_probs = default_probs;
|
|
swap_ref_indices = false;
|
|
loop_filter_ref_deltas.fill(0);
|
|
loop_filter_mode_deltas.fill(0);
|
|
frame_ctxs.fill(default_probs);
|
|
|
|
// intra only, meaning the frame can be recreated with no other references
|
|
current_frame_info.intra_only = true;
|
|
} else {
|
|
if (!current_frame_info.show_frame) {
|
|
uncomp_writer.WriteBit(current_frame_info.intra_only);
|
|
} else {
|
|
current_frame_info.intra_only = false;
|
|
}
|
|
if (!current_frame_info.error_resilient_mode) {
|
|
uncomp_writer.WriteU(0, 2); // Reset frame context.
|
|
}
|
|
const auto& curr_offsets = current_frame_info.frame_offsets;
|
|
const auto& next_offsets = next_frame.info.frame_offsets;
|
|
const bool ref_frames_different = curr_offsets[1] != curr_offsets[2];
|
|
const bool next_references_swap =
|
|
(next_offsets[1] == curr_offsets[2]) || (next_offsets[2] == curr_offsets[1]);
|
|
const bool needs_ref_swap = ref_frames_different && next_references_swap;
|
|
if (needs_ref_swap) {
|
|
swap_ref_indices = !swap_ref_indices;
|
|
}
|
|
union {
|
|
u32 raw;
|
|
BitField<0, 1, u32> refresh_last;
|
|
BitField<1, 2, u32> refresh_golden;
|
|
BitField<2, 1, u32> refresh_alt;
|
|
} refresh_frame_flags;
|
|
|
|
refresh_frame_flags.raw = 0;
|
|
for (u32 index = 0; index < 3; ++index) {
|
|
// Refresh indices that use the current frame as an index
|
|
if (curr_offsets[3] == next_offsets[index]) {
|
|
refresh_frame_flags.raw |= 1u << index;
|
|
}
|
|
}
|
|
if (swap_ref_indices) {
|
|
const u32 temp = refresh_frame_flags.refresh_golden;
|
|
refresh_frame_flags.refresh_golden.Assign(refresh_frame_flags.refresh_alt.Value());
|
|
refresh_frame_flags.refresh_alt.Assign(temp);
|
|
}
|
|
if (current_frame_info.intra_only) {
|
|
uncomp_writer.WriteU(frame_sync_code, 24);
|
|
uncomp_writer.WriteU(refresh_frame_flags.raw, 8);
|
|
uncomp_writer.WriteU(current_frame_info.frame_size.width - 1, 16);
|
|
uncomp_writer.WriteU(current_frame_info.frame_size.height - 1, 16);
|
|
uncomp_writer.WriteBit(false); // Render and frame size different.
|
|
} else {
|
|
const bool swap_indices = needs_ref_swap ^ swap_ref_indices;
|
|
const auto ref_frame_index = swap_indices ? std::array{0, 2, 1} : std::array{0, 1, 2};
|
|
uncomp_writer.WriteU(refresh_frame_flags.raw, 8);
|
|
for (size_t index = 1; index < 4; index++) {
|
|
uncomp_writer.WriteU(ref_frame_index[index - 1], 3);
|
|
uncomp_writer.WriteU(current_frame_info.ref_frame_sign_bias[index], 1);
|
|
}
|
|
uncomp_writer.WriteBit(true); // Frame size with refs.
|
|
uncomp_writer.WriteBit(false); // Render and frame size different.
|
|
uncomp_writer.WriteBit(current_frame_info.allow_high_precision_mv);
|
|
uncomp_writer.WriteBit(current_frame_info.interp_filter == 4);
|
|
|
|
if (current_frame_info.interp_filter != 4) {
|
|
uncomp_writer.WriteU(current_frame_info.interp_filter, 2);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!current_frame_info.error_resilient_mode) {
|
|
uncomp_writer.WriteBit(true); // Refresh frame context. where do i get this info from?
|
|
uncomp_writer.WriteBit(true); // Frame parallel decoding mode.
|
|
}
|
|
|
|
int frame_ctx_idx = 0;
|
|
if (!current_frame_info.show_frame) {
|
|
frame_ctx_idx = 1;
|
|
}
|
|
|
|
uncomp_writer.WriteU(frame_ctx_idx, 2); // Frame context index.
|
|
prev_frame_probs = frame_ctxs[frame_ctx_idx]; // reference probabilities for compressed header
|
|
frame_ctxs[frame_ctx_idx] = current_frame_info.entropy;
|
|
|
|
uncomp_writer.WriteU(current_frame_info.first_level, 6);
|
|
uncomp_writer.WriteU(current_frame_info.sharpness_level, 3);
|
|
uncomp_writer.WriteBit(current_frame_info.mode_ref_delta_enabled);
|
|
|
|
if (current_frame_info.mode_ref_delta_enabled) {
|
|
// check if ref deltas are different, update accordingly
|
|
std::array<bool, 4> update_loop_filter_ref_deltas;
|
|
std::array<bool, 2> update_loop_filter_mode_deltas;
|
|
|
|
bool loop_filter_delta_update = false;
|
|
|
|
for (std::size_t index = 0; index < current_frame_info.ref_deltas.size(); index++) {
|
|
const s8 old_deltas = loop_filter_ref_deltas[index];
|
|
const s8 new_deltas = current_frame_info.ref_deltas[index];
|
|
const bool differing_delta = old_deltas != new_deltas;
|
|
|
|
update_loop_filter_ref_deltas[index] = differing_delta;
|
|
loop_filter_delta_update |= differing_delta;
|
|
}
|
|
|
|
for (std::size_t index = 0; index < current_frame_info.mode_deltas.size(); index++) {
|
|
const s8 old_deltas = loop_filter_mode_deltas[index];
|
|
const s8 new_deltas = current_frame_info.mode_deltas[index];
|
|
const bool differing_delta = old_deltas != new_deltas;
|
|
|
|
update_loop_filter_mode_deltas[index] = differing_delta;
|
|
loop_filter_delta_update |= differing_delta;
|
|
}
|
|
|
|
uncomp_writer.WriteBit(loop_filter_delta_update);
|
|
|
|
if (loop_filter_delta_update) {
|
|
for (std::size_t index = 0; index < current_frame_info.ref_deltas.size(); index++) {
|
|
uncomp_writer.WriteBit(update_loop_filter_ref_deltas[index]);
|
|
|
|
if (update_loop_filter_ref_deltas[index]) {
|
|
uncomp_writer.WriteS(current_frame_info.ref_deltas[index], 6);
|
|
}
|
|
}
|
|
|
|
for (std::size_t index = 0; index < current_frame_info.mode_deltas.size(); index++) {
|
|
uncomp_writer.WriteBit(update_loop_filter_mode_deltas[index]);
|
|
|
|
if (update_loop_filter_mode_deltas[index]) {
|
|
uncomp_writer.WriteS(current_frame_info.mode_deltas[index], 6);
|
|
}
|
|
}
|
|
// save new deltas
|
|
loop_filter_ref_deltas = current_frame_info.ref_deltas;
|
|
loop_filter_mode_deltas = current_frame_info.mode_deltas;
|
|
}
|
|
}
|
|
|
|
uncomp_writer.WriteU(current_frame_info.base_q_index, 8);
|
|
|
|
uncomp_writer.WriteDeltaQ(current_frame_info.y_dc_delta_q);
|
|
uncomp_writer.WriteDeltaQ(current_frame_info.uv_dc_delta_q);
|
|
uncomp_writer.WriteDeltaQ(current_frame_info.uv_ac_delta_q);
|
|
|
|
ASSERT(!current_frame_info.segment_enabled);
|
|
uncomp_writer.WriteBit(false); // Segmentation enabled (TODO).
|
|
|
|
const s32 min_tile_cols_log2 = CalcMinLog2TileCols(current_frame_info.frame_size.width);
|
|
const s32 max_tile_cols_log2 = CalcMaxLog2TileCols(current_frame_info.frame_size.width);
|
|
|
|
const s32 tile_cols_log2_diff = current_frame_info.log2_tile_cols - min_tile_cols_log2;
|
|
const s32 tile_cols_log2_inc_mask = (1 << tile_cols_log2_diff) - 1;
|
|
|
|
// If it's less than the maximum, we need to add an extra 0 on the bitstream
|
|
// to indicate that it should stop reading.
|
|
if (current_frame_info.log2_tile_cols < max_tile_cols_log2) {
|
|
uncomp_writer.WriteU(tile_cols_log2_inc_mask << 1, tile_cols_log2_diff + 1);
|
|
} else {
|
|
uncomp_writer.WriteU(tile_cols_log2_inc_mask, tile_cols_log2_diff);
|
|
}
|
|
|
|
const bool tile_rows_log2_is_nonzero = current_frame_info.log2_tile_rows != 0;
|
|
|
|
uncomp_writer.WriteBit(tile_rows_log2_is_nonzero);
|
|
|
|
if (tile_rows_log2_is_nonzero) {
|
|
uncomp_writer.WriteBit(current_frame_info.log2_tile_rows > 1);
|
|
}
|
|
|
|
return uncomp_writer;
|
|
}
|
|
|
|
void VP9::ComposeFrame(const Host1x::NvdecCommon::NvdecRegisters& state) {
|
|
std::vector<u8> bitstream;
|
|
{
|
|
Vp9FrameContainer curr_frame = GetCurrentFrame(state);
|
|
current_frame_info = curr_frame.info;
|
|
bitstream = std::move(curr_frame.bit_stream);
|
|
}
|
|
// The uncompressed header routine sets PrevProb parameters needed for the compressed header
|
|
auto uncomp_writer = ComposeUncompressedHeader();
|
|
std::vector<u8> compressed_header = ComposeCompressedHeader();
|
|
|
|
uncomp_writer.WriteU(static_cast<s32>(compressed_header.size()), 16);
|
|
uncomp_writer.Flush();
|
|
std::vector<u8> uncompressed_header = uncomp_writer.GetByteArray();
|
|
|
|
// Write headers and frame to buffer
|
|
frame.resize(uncompressed_header.size() + compressed_header.size() + bitstream.size());
|
|
std::copy(uncompressed_header.begin(), uncompressed_header.end(), frame.begin());
|
|
std::copy(compressed_header.begin(), compressed_header.end(),
|
|
frame.begin() + uncompressed_header.size());
|
|
std::copy(bitstream.begin(), bitstream.end(),
|
|
frame.begin() + uncompressed_header.size() + compressed_header.size());
|
|
}
|
|
|
|
VpxRangeEncoder::VpxRangeEncoder() {
|
|
Write(false);
|
|
}
|
|
|
|
VpxRangeEncoder::~VpxRangeEncoder() = default;
|
|
|
|
void VpxRangeEncoder::Write(s32 value, s32 value_size) {
|
|
for (s32 bit = value_size - 1; bit >= 0; bit--) {
|
|
Write(((value >> bit) & 1) != 0);
|
|
}
|
|
}
|
|
|
|
void VpxRangeEncoder::Write(bool bit) {
|
|
Write(bit, half_probability);
|
|
}
|
|
|
|
void VpxRangeEncoder::Write(bool bit, s32 probability) {
|
|
u32 local_range = range;
|
|
const u32 split = 1 + (((local_range - 1) * static_cast<u32>(probability)) >> 8);
|
|
local_range = split;
|
|
|
|
if (bit) {
|
|
low_value += split;
|
|
local_range = range - split;
|
|
}
|
|
|
|
s32 shift = static_cast<s32>(norm_lut[local_range]);
|
|
local_range <<= shift;
|
|
count += shift;
|
|
|
|
if (count >= 0) {
|
|
const s32 offset = shift - count;
|
|
|
|
if (((low_value << (offset - 1)) >> 31) != 0) {
|
|
const s32 current_pos = static_cast<s32>(base_stream.GetPosition());
|
|
base_stream.Seek(-1, Common::SeekOrigin::FromCurrentPos);
|
|
while (PeekByte() == 0xff) {
|
|
base_stream.WriteByte(0);
|
|
|
|
base_stream.Seek(-2, Common::SeekOrigin::FromCurrentPos);
|
|
}
|
|
base_stream.WriteByte(static_cast<u8>((PeekByte() + 1)));
|
|
base_stream.Seek(current_pos, Common::SeekOrigin::SetOrigin);
|
|
}
|
|
base_stream.WriteByte(static_cast<u8>((low_value >> (24 - offset))));
|
|
|
|
low_value <<= offset;
|
|
shift = count;
|
|
low_value &= 0xffffff;
|
|
count -= 8;
|
|
}
|
|
|
|
low_value <<= shift;
|
|
range = local_range;
|
|
}
|
|
|
|
void VpxRangeEncoder::End() {
|
|
for (std::size_t index = 0; index < 32; ++index) {
|
|
Write(false);
|
|
}
|
|
}
|
|
|
|
u8 VpxRangeEncoder::PeekByte() {
|
|
const u8 value = base_stream.ReadByte();
|
|
base_stream.Seek(-1, Common::SeekOrigin::FromCurrentPos);
|
|
|
|
return value;
|
|
}
|
|
|
|
VpxBitStreamWriter::VpxBitStreamWriter() = default;
|
|
|
|
VpxBitStreamWriter::~VpxBitStreamWriter() = default;
|
|
|
|
void VpxBitStreamWriter::WriteU(u32 value, u32 value_size) {
|
|
WriteBits(value, value_size);
|
|
}
|
|
|
|
void VpxBitStreamWriter::WriteS(s32 value, u32 value_size) {
|
|
const bool sign = value < 0;
|
|
if (sign) {
|
|
value = -value;
|
|
}
|
|
|
|
WriteBits(static_cast<u32>(value << 1) | (sign ? 1 : 0), value_size + 1);
|
|
}
|
|
|
|
void VpxBitStreamWriter::WriteDeltaQ(u32 value) {
|
|
const bool delta_coded = value != 0;
|
|
WriteBit(delta_coded);
|
|
|
|
if (delta_coded) {
|
|
WriteBits(value, 4);
|
|
}
|
|
}
|
|
|
|
void VpxBitStreamWriter::WriteBits(u32 value, u32 bit_count) {
|
|
s32 value_pos = 0;
|
|
s32 remaining = bit_count;
|
|
|
|
while (remaining > 0) {
|
|
s32 copy_size = remaining;
|
|
|
|
const s32 free = GetFreeBufferBits();
|
|
|
|
if (copy_size > free) {
|
|
copy_size = free;
|
|
}
|
|
|
|
const s32 mask = (1 << copy_size) - 1;
|
|
|
|
const s32 src_shift = (bit_count - value_pos) - copy_size;
|
|
const s32 dst_shift = (buffer_size - buffer_pos) - copy_size;
|
|
|
|
buffer |= ((value >> src_shift) & mask) << dst_shift;
|
|
|
|
value_pos += copy_size;
|
|
buffer_pos += copy_size;
|
|
remaining -= copy_size;
|
|
}
|
|
}
|
|
|
|
void VpxBitStreamWriter::WriteBit(bool state) {
|
|
WriteBits(state ? 1 : 0, 1);
|
|
}
|
|
|
|
s32 VpxBitStreamWriter::GetFreeBufferBits() {
|
|
if (buffer_pos == buffer_size) {
|
|
Flush();
|
|
}
|
|
|
|
return buffer_size - buffer_pos;
|
|
}
|
|
|
|
void VpxBitStreamWriter::Flush() {
|
|
if (buffer_pos == 0) {
|
|
return;
|
|
}
|
|
byte_array.push_back(static_cast<u8>(buffer));
|
|
buffer = 0;
|
|
buffer_pos = 0;
|
|
}
|
|
|
|
std::vector<u8>& VpxBitStreamWriter::GetByteArray() {
|
|
return byte_array;
|
|
}
|
|
|
|
const std::vector<u8>& VpxBitStreamWriter::GetByteArray() const {
|
|
return byte_array;
|
|
}
|
|
|
|
} // namespace Tegra::Decoder
|