| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| /*!\file |
| * \brief Describes film grain parameters and film grain synthesis |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <assert.h> |
| #include "aom_dsp/grain_synthesis.h" |
| #include "aom_mem/aom_mem.h" |
| |
| // Samples with Gaussian distribution in the range of [-2048, 2047] (12 bits) |
| // with zero mean and standard deviation of about 512. |
| // should be divided by 4 for 10-bit range and 16 for 8-bit range. |
| static const int gaussian_sequence[2048] = { |
| 56, 568, -180, 172, 124, -84, 172, -64, -900, 24, 820, |
| 224, 1248, 996, 272, -8, -916, -388, -732, -104, -188, 800, |
| 112, -652, -320, -376, 140, -252, 492, -168, 44, -788, 588, |
| -584, 500, -228, 12, 680, 272, -476, 972, -100, 652, 368, |
| 432, -196, -720, -192, 1000, -332, 652, -136, -552, -604, -4, |
| 192, -220, -136, 1000, -52, 372, -96, -624, 124, -24, 396, |
| 540, -12, -104, 640, 464, 244, -208, -84, 368, -528, -740, |
| 248, -968, -848, 608, 376, -60, -292, -40, -156, 252, -292, |
| 248, 224, -280, 400, -244, 244, -60, 76, -80, 212, 532, |
| 340, 128, -36, 824, -352, -60, -264, -96, -612, 416, -704, |
| 220, -204, 640, -160, 1220, -408, 900, 336, 20, -336, -96, |
| -792, 304, 48, -28, -1232, -1172, -448, 104, -292, -520, 244, |
| 60, -948, 0, -708, 268, 108, 356, -548, 488, -344, -136, |
| 488, -196, -224, 656, -236, -1128, 60, 4, 140, 276, -676, |
| -376, 168, -108, 464, 8, 564, 64, 240, 308, -300, -400, |
| -456, -136, 56, 120, -408, -116, 436, 504, -232, 328, 844, |
| -164, -84, 784, -168, 232, -224, 348, -376, 128, 568, 96, |
| -1244, -288, 276, 848, 832, -360, 656, 464, -384, -332, -356, |
| 728, -388, 160, -192, 468, 296, 224, 140, -776, -100, 280, |
| 4, 196, 44, -36, -648, 932, 16, 1428, 28, 528, 808, |
| 772, 20, 268, 88, -332, -284, 124, -384, -448, 208, -228, |
| -1044, -328, 660, 380, -148, -300, 588, 240, 540, 28, 136, |
| -88, -436, 256, 296, -1000, 1400, 0, -48, 1056, -136, 264, |
| -528, -1108, 632, -484, -592, -344, 796, 124, -668, -768, 388, |
| 1296, -232, -188, -200, -288, -4, 308, 100, -168, 256, -500, |
| 204, -508, 648, -136, 372, -272, -120, -1004, -552, -548, -384, |
| 548, -296, 428, -108, -8, -912, -324, -224, -88, -112, -220, |
| -100, 996, -796, 548, 360, -216, 180, 428, -200, -212, 148, |
| 96, 148, 284, 216, -412, -320, 120, -300, -384, -604, -572, |
| -332, -8, -180, -176, 696, 116, -88, 628, 76, 44, -516, |
| 240, -208, -40, 100, -592, 344, -308, -452, -228, 20, 916, |
| -1752, -136, -340, -804, 140, 40, 512, 340, 248, 184, -492, |
| 896, -156, 932, -628, 328, -688, -448, -616, -752, -100, 560, |
| -1020, 180, -800, -64, 76, 576, 1068, 396, 660, 552, -108, |
| -28, 320, -628, 312, -92, -92, -472, 268, 16, 560, 516, |
| -672, -52, 492, -100, 260, 384, 284, 292, 304, -148, 88, |
| -152, 1012, 1064, -228, 164, -376, -684, 592, -392, 156, 196, |
| -524, -64, -884, 160, -176, 636, 648, 404, -396, -436, 864, |
| 424, -728, 988, -604, 904, -592, 296, -224, 536, -176, -920, |
| 436, -48, 1176, -884, 416, -776, -824, -884, 524, -548, -564, |
| -68, -164, -96, 692, 364, -692, -1012, -68, 260, -480, 876, |
| -1116, 452, -332, -352, 892, -1088, 1220, -676, 12, -292, 244, |
| 496, 372, -32, 280, 200, 112, -440, -96, 24, -644, -184, |
| 56, -432, 224, -980, 272, -260, 144, -436, 420, 356, 364, |
| -528, 76, 172, -744, -368, 404, -752, -416, 684, -688, 72, |
| 540, 416, 92, 444, 480, -72, -1416, 164, -1172, -68, 24, |
| 424, 264, 1040, 128, -912, -524, -356, 64, 876, -12, 4, |
| -88, 532, 272, -524, 320, 276, -508, 940, 24, -400, -120, |
| 756, 60, 236, -412, 100, 376, -484, 400, -100, -740, -108, |
| -260, 328, -268, 224, -200, -416, 184, -604, -564, -20, 296, |
| 60, 892, -888, 60, 164, 68, -760, 216, -296, 904, -336, |
| -28, 404, -356, -568, -208, -1480, -512, 296, 328, -360, -164, |
| -1560, -776, 1156, -428, 164, -504, -112, 120, -216, -148, -264, |
| 308, 32, 64, -72, 72, 116, 176, -64, -272, 460, -536, |
| -784, -280, 348, 108, -752, -132, 524, -540, -776, 116, -296, |
| -1196, -288, -560, 1040, -472, 116, -848, -1116, 116, 636, 696, |
| 284, -176, 1016, 204, -864, -648, -248, 356, 972, -584, -204, |
| 264, 880, 528, -24, -184, 116, 448, -144, 828, 524, 212, |
| -212, 52, 12, 200, 268, -488, -404, -880, 824, -672, -40, |
| 908, -248, 500, 716, -576, 492, -576, 16, 720, -108, 384, |
| 124, 344, 280, 576, -500, 252, 104, -308, 196, -188, -8, |
| 1268, 296, 1032, -1196, 436, 316, 372, -432, -200, -660, 704, |
| -224, 596, -132, 268, 32, -452, 884, 104, -1008, 424, -1348, |
| -280, 4, -1168, 368, 476, 696, 300, -8, 24, 180, -592, |
| -196, 388, 304, 500, 724, -160, 244, -84, 272, -256, -420, |
| 320, 208, -144, -156, 156, 364, 452, 28, 540, 316, 220, |
| -644, -248, 464, 72, 360, 32, -388, 496, -680, -48, 208, |
| -116, -408, 60, -604, -392, 548, -840, 784, -460, 656, -544, |
| -388, -264, 908, -800, -628, -612, -568, 572, -220, 164, 288, |
| -16, -308, 308, -112, -636, -760, 280, -668, 432, 364, 240, |
| -196, 604, 340, 384, 196, 592, -44, -500, 432, -580, -132, |
| 636, -76, 392, 4, -412, 540, 508, 328, -356, -36, 16, |
| -220, -64, -248, -60, 24, -192, 368, 1040, 92, -24, -1044, |
| -32, 40, 104, 148, 192, -136, -520, 56, -816, -224, 732, |
| 392, 356, 212, -80, -424, -1008, -324, 588, -1496, 576, 460, |
| -816, -848, 56, -580, -92, -1372, -112, -496, 200, 364, 52, |
| -140, 48, -48, -60, 84, 72, 40, 132, -356, -268, -104, |
| -284, -404, 732, -520, 164, -304, -540, 120, 328, -76, -460, |
| 756, 388, 588, 236, -436, -72, -176, -404, -316, -148, 716, |
| -604, 404, -72, -88, -888, -68, 944, 88, -220, -344, 960, |
| 472, 460, -232, 704, 120, 832, -228, 692, -508, 132, -476, |
| 844, -748, -364, -44, 1116, -1104, -1056, 76, 428, 552, -692, |
| 60, 356, 96, -384, -188, -612, -576, 736, 508, 892, 352, |
| -1132, 504, -24, -352, 324, 332, -600, -312, 292, 508, -144, |
| -8, 484, 48, 284, -260, -240, 256, -100, -292, -204, -44, |
| 472, -204, 908, -188, -1000, -256, 92, 1164, -392, 564, 356, |
| 652, -28, -884, 256, 484, -192, 760, -176, 376, -524, -452, |
| -436, 860, -736, 212, 124, 504, -476, 468, 76, -472, 552, |
| -692, -944, -620, 740, -240, 400, 132, 20, 192, -196, 264, |
| -668, -1012, -60, 296, -316, -828, 76, -156, 284, -768, -448, |
| -832, 148, 248, 652, 616, 1236, 288, -328, -400, -124, 588, |
| 220, 520, -696, 1032, 768, -740, -92, -272, 296, 448, -464, |
| 412, -200, 392, 440, -200, 264, -152, -260, 320, 1032, 216, |
| 320, -8, -64, 156, -1016, 1084, 1172, 536, 484, -432, 132, |
| 372, -52, -256, 84, 116, -352, 48, 116, 304, -384, 412, |
| 924, -300, 528, 628, 180, 648, 44, -980, -220, 1320, 48, |
| 332, 748, 524, -268, -720, 540, -276, 564, -344, -208, -196, |
| 436, 896, 88, -392, 132, 80, -964, -288, 568, 56, -48, |
| -456, 888, 8, 552, -156, -292, 948, 288, 128, -716, -292, |
| 1192, -152, 876, 352, -600, -260, -812, -468, -28, -120, -32, |
| -44, 1284, 496, 192, 464, 312, -76, -516, -380, -456, -1012, |
| -48, 308, -156, 36, 492, -156, -808, 188, 1652, 68, -120, |
| -116, 316, 160, -140, 352, 808, -416, 592, 316, -480, 56, |
| 528, -204, -568, 372, -232, 752, -344, 744, -4, 324, -416, |
| -600, 768, 268, -248, -88, -132, -420, -432, 80, -288, 404, |
| -316, -1216, -588, 520, -108, 92, -320, 368, -480, -216, -92, |
| 1688, -300, 180, 1020, -176, 820, -68, -228, -260, 436, -904, |
| 20, 40, -508, 440, -736, 312, 332, 204, 760, -372, 728, |
| 96, -20, -632, -520, -560, 336, 1076, -64, -532, 776, 584, |
| 192, 396, -728, -520, 276, -188, 80, -52, -612, -252, -48, |
| 648, 212, -688, 228, -52, -260, 428, -412, -272, -404, 180, |
| 816, -796, 48, 152, 484, -88, -216, 988, 696, 188, -528, |
| 648, -116, -180, 316, 476, 12, -564, 96, 476, -252, -364, |
| -376, -392, 556, -256, -576, 260, -352, 120, -16, -136, -260, |
| -492, 72, 556, 660, 580, 616, 772, 436, 424, -32, -324, |
| -1268, 416, -324, -80, 920, 160, 228, 724, 32, -516, 64, |
| 384, 68, -128, 136, 240, 248, -204, -68, 252, -932, -120, |
| -480, -628, -84, 192, 852, -404, -288, -132, 204, 100, 168, |
| -68, -196, -868, 460, 1080, 380, -80, 244, 0, 484, -888, |
| 64, 184, 352, 600, 460, 164, 604, -196, 320, -64, 588, |
| -184, 228, 12, 372, 48, -848, -344, 224, 208, -200, 484, |
| 128, -20, 272, -468, -840, 384, 256, -720, -520, -464, -580, |
| 112, -120, 644, -356, -208, -608, -528, 704, 560, -424, 392, |
| 828, 40, 84, 200, -152, 0, -144, 584, 280, -120, 80, |
| -556, -972, -196, -472, 724, 80, 168, -32, 88, 160, -688, |
| 0, 160, 356, 372, -776, 740, -128, 676, -248, -480, 4, |
| -364, 96, 544, 232, -1032, 956, 236, 356, 20, -40, 300, |
| 24, -676, -596, 132, 1120, -104, 532, -1096, 568, 648, 444, |
| 508, 380, 188, -376, -604, 1488, 424, 24, 756, -220, -192, |
| 716, 120, 920, 688, 168, 44, -460, 568, 284, 1144, 1160, |
| 600, 424, 888, 656, -356, -320, 220, 316, -176, -724, -188, |
| -816, -628, -348, -228, -380, 1012, -452, -660, 736, 928, 404, |
| -696, -72, -268, -892, 128, 184, -344, -780, 360, 336, 400, |
| 344, 428, 548, -112, 136, -228, -216, -820, -516, 340, 92, |
| -136, 116, -300, 376, -244, 100, -316, -520, -284, -12, 824, |
| 164, -548, -180, -128, 116, -924, -828, 268, -368, -580, 620, |
| 192, 160, 0, -1676, 1068, 424, -56, -360, 468, -156, 720, |
| 288, -528, 556, -364, 548, -148, 504, 316, 152, -648, -620, |
| -684, -24, -376, -384, -108, -920, -1032, 768, 180, -264, -508, |
| -1268, -260, -60, 300, -240, 988, 724, -376, -576, -212, -736, |
| 556, 192, 1092, -620, -880, 376, -56, -4, -216, -32, 836, |
| 268, 396, 1332, 864, -600, 100, 56, -412, -92, 356, 180, |
| 884, -468, -436, 292, -388, -804, -704, -840, 368, -348, 140, |
| -724, 1536, 940, 372, 112, -372, 436, -480, 1136, 296, -32, |
| -228, 132, -48, -220, 868, -1016, -60, -1044, -464, 328, 916, |
| 244, 12, -736, -296, 360, 468, -376, -108, -92, 788, 368, |
| -56, 544, 400, -672, -420, 728, 16, 320, 44, -284, -380, |
| -796, 488, 132, 204, -596, -372, 88, -152, -908, -636, -572, |
| -624, -116, -692, -200, -56, 276, -88, 484, -324, 948, 864, |
| 1000, -456, -184, -276, 292, -296, 156, 676, 320, 160, 908, |
| -84, -1236, -288, -116, 260, -372, -644, 732, -756, -96, 84, |
| 344, -520, 348, -688, 240, -84, 216, -1044, -136, -676, -396, |
| -1500, 960, -40, 176, 168, 1516, 420, -504, -344, -364, -360, |
| 1216, -940, -380, -212, 252, -660, -708, 484, -444, -152, 928, |
| -120, 1112, 476, -260, 560, -148, -344, 108, -196, 228, -288, |
| 504, 560, -328, -88, 288, -1008, 460, -228, 468, -836, -196, |
| 76, 388, 232, 412, -1168, -716, -644, 756, -172, -356, -504, |
| 116, 432, 528, 48, 476, -168, -608, 448, 160, -532, -272, |
| 28, -676, -12, 828, 980, 456, 520, 104, -104, 256, -344, |
| -4, -28, -368, -52, -524, -572, -556, -200, 768, 1124, -208, |
| -512, 176, 232, 248, -148, -888, 604, -600, -304, 804, -156, |
| -212, 488, -192, -804, -256, 368, -360, -916, -328, 228, -240, |
| -448, -472, 856, -556, -364, 572, -12, -156, -368, -340, 432, |
| 252, -752, -152, 288, 268, -580, -848, -592, 108, -76, 244, |
| 312, -716, 592, -80, 436, 360, 4, -248, 160, 516, 584, |
| 732, 44, -468, -280, -292, -156, -588, 28, 308, 912, 24, |
| 124, 156, 180, -252, 944, -924, -772, -520, -428, -624, 300, |
| -212, -1144, 32, -724, 800, -1128, -212, -1288, -848, 180, -416, |
| 440, 192, -576, -792, -76, -1080, 80, -532, -352, -132, 380, |
| -820, 148, 1112, 128, 164, 456, 700, -924, 144, -668, -384, |
| 648, -832, 508, 552, -52, -100, -656, 208, -568, 748, -88, |
| 680, 232, 300, 192, -408, -1012, -152, -252, -268, 272, -876, |
| -664, -648, -332, -136, 16, 12, 1152, -28, 332, -536, 320, |
| -672, -460, -316, 532, -260, 228, -40, 1052, -816, 180, 88, |
| -496, -556, -672, -368, 428, 92, 356, 404, -408, 252, 196, |
| -176, -556, 792, 268, 32, 372, 40, 96, -332, 328, 120, |
| 372, -900, -40, 472, -264, -592, 952, 128, 656, 112, 664, |
| -232, 420, 4, -344, -464, 556, 244, -416, -32, 252, 0, |
| -412, 188, -696, 508, -476, 324, -1096, 656, -312, 560, 264, |
| -136, 304, 160, -64, -580, 248, 336, -720, 560, -348, -288, |
| -276, -196, -500, 852, -544, -236, -1128, -992, -776, 116, 56, |
| 52, 860, 884, 212, -12, 168, 1020, 512, -552, 924, -148, |
| 716, 188, 164, -340, -520, -184, 880, -152, -680, -208, -1156, |
| -300, -528, -472, 364, 100, -744, -1056, -32, 540, 280, 144, |
| -676, -32, -232, -280, -224, 96, 568, -76, 172, 148, 148, |
| 104, 32, -296, -32, 788, -80, 32, -16, 280, 288, 944, |
| 428, -484 |
| }; |
| |
| static const int gauss_bits = 11; |
| |
| static int luma_subblock_size_y = 32; |
| static int luma_subblock_size_x = 32; |
| |
| static int chroma_subblock_size_y = 16; |
| static int chroma_subblock_size_x = 16; |
| |
| static const int min_luma_legal_range = 16; |
| static const int max_luma_legal_range = 235; |
| |
| static const int min_chroma_legal_range = 16; |
| static const int max_chroma_legal_range = 240; |
| |
| static int scaling_lut_y[256]; |
| static int scaling_lut_cb[256]; |
| static int scaling_lut_cr[256]; |
| |
| static int grain_min; |
| static int grain_max; |
| |
| static uint16_t random_register = 0; // random number generator register |
| |
| static void init_arrays(const aom_film_grain_t *params, int luma_stride, |
| int chroma_stride, int ***pred_pos_luma_p, |
| int ***pred_pos_chroma_p, int **luma_grain_block, |
| int **cb_grain_block, int **cr_grain_block, |
| int **y_line_buf, int **cb_line_buf, int **cr_line_buf, |
| int **y_col_buf, int **cb_col_buf, int **cr_col_buf, |
| int luma_grain_samples, int chroma_grain_samples, |
| int chroma_subsamp_y, int chroma_subsamp_x) { |
| memset(scaling_lut_y, 0, sizeof(*scaling_lut_y) * 256); |
| memset(scaling_lut_cb, 0, sizeof(*scaling_lut_cb) * 256); |
| memset(scaling_lut_cr, 0, sizeof(*scaling_lut_cr) * 256); |
| |
| int num_pos_luma = 2 * params->ar_coeff_lag * (params->ar_coeff_lag + 1); |
| int num_pos_chroma = num_pos_luma; |
| if (params->num_y_points > 0) ++num_pos_chroma; |
| |
| int **pred_pos_luma; |
| int **pred_pos_chroma; |
| |
| pred_pos_luma = (int **)aom_malloc(sizeof(*pred_pos_luma) * num_pos_luma); |
| |
| for (int row = 0; row < num_pos_luma; row++) { |
| pred_pos_luma[row] = (int *)aom_malloc(sizeof(**pred_pos_luma) * 3); |
| } |
| |
| pred_pos_chroma = |
| (int **)aom_malloc(sizeof(*pred_pos_chroma) * num_pos_chroma); |
| |
| for (int row = 0; row < num_pos_chroma; row++) { |
| pred_pos_chroma[row] = (int *)aom_malloc(sizeof(**pred_pos_chroma) * 3); |
| } |
| |
| int pos_ar_index = 0; |
| |
| for (int row = -params->ar_coeff_lag; row < 0; row++) { |
| for (int col = -params->ar_coeff_lag; col < params->ar_coeff_lag + 1; |
| col++) { |
| pred_pos_luma[pos_ar_index][0] = row; |
| pred_pos_luma[pos_ar_index][1] = col; |
| pred_pos_luma[pos_ar_index][2] = 0; |
| |
| pred_pos_chroma[pos_ar_index][0] = row; |
| pred_pos_chroma[pos_ar_index][1] = col; |
| pred_pos_chroma[pos_ar_index][2] = 0; |
| ++pos_ar_index; |
| } |
| } |
| |
| for (int col = -params->ar_coeff_lag; col < 0; col++) { |
| pred_pos_luma[pos_ar_index][0] = 0; |
| pred_pos_luma[pos_ar_index][1] = col; |
| pred_pos_luma[pos_ar_index][2] = 0; |
| |
| pred_pos_chroma[pos_ar_index][0] = 0; |
| pred_pos_chroma[pos_ar_index][1] = col; |
| pred_pos_chroma[pos_ar_index][2] = 0; |
| |
| ++pos_ar_index; |
| } |
| |
| if (params->num_y_points > 0) { |
| pred_pos_chroma[pos_ar_index][0] = 0; |
| pred_pos_chroma[pos_ar_index][1] = 0; |
| pred_pos_chroma[pos_ar_index][2] = 1; |
| } |
| |
| *pred_pos_luma_p = pred_pos_luma; |
| *pred_pos_chroma_p = pred_pos_chroma; |
| |
| *y_line_buf = (int *)aom_malloc(sizeof(**y_line_buf) * luma_stride * 2); |
| *cb_line_buf = (int *)aom_malloc(sizeof(**cb_line_buf) * chroma_stride * |
| (2 >> chroma_subsamp_y)); |
| *cr_line_buf = (int *)aom_malloc(sizeof(**cr_line_buf) * chroma_stride * |
| (2 >> chroma_subsamp_y)); |
| |
| *y_col_buf = |
| (int *)aom_malloc(sizeof(**y_col_buf) * (luma_subblock_size_y + 2) * 2); |
| *cb_col_buf = |
| (int *)aom_malloc(sizeof(**cb_col_buf) * |
| (chroma_subblock_size_y + (2 >> chroma_subsamp_y)) * |
| (2 >> chroma_subsamp_x)); |
| *cr_col_buf = |
| (int *)aom_malloc(sizeof(**cr_col_buf) * |
| (chroma_subblock_size_y + (2 >> chroma_subsamp_y)) * |
| (2 >> chroma_subsamp_x)); |
| |
| *luma_grain_block = |
| (int *)aom_malloc(sizeof(**luma_grain_block) * luma_grain_samples); |
| *cb_grain_block = |
| (int *)aom_malloc(sizeof(**cb_grain_block) * chroma_grain_samples); |
| *cr_grain_block = |
| (int *)aom_malloc(sizeof(**cr_grain_block) * chroma_grain_samples); |
| } |
| |
| static void dealloc_arrays(const aom_film_grain_t *params, int ***pred_pos_luma, |
| int ***pred_pos_chroma, int **luma_grain_block, |
| int **cb_grain_block, int **cr_grain_block, |
| int **y_line_buf, int **cb_line_buf, |
| int **cr_line_buf, int **y_col_buf, int **cb_col_buf, |
| int **cr_col_buf) { |
| int num_pos_luma = 2 * params->ar_coeff_lag * (params->ar_coeff_lag + 1); |
| int num_pos_chroma = num_pos_luma; |
| if (params->num_y_points > 0) ++num_pos_chroma; |
| |
| for (int row = 0; row < num_pos_luma; row++) { |
| aom_free((*pred_pos_luma)[row]); |
| } |
| aom_free(*pred_pos_luma); |
| |
| for (int row = 0; row < num_pos_chroma; row++) { |
| aom_free((*pred_pos_chroma)[row]); |
| } |
| aom_free((*pred_pos_chroma)); |
| |
| aom_free(*y_line_buf); |
| |
| aom_free(*cb_line_buf); |
| |
| aom_free(*cr_line_buf); |
| |
| aom_free(*y_col_buf); |
| |
| aom_free(*cb_col_buf); |
| |
| aom_free(*cr_col_buf); |
| |
| aom_free(*luma_grain_block); |
| |
| aom_free(*cb_grain_block); |
| |
| aom_free(*cr_grain_block); |
| } |
| |
| // get a number between 0 and 2^bits - 1 |
| static INLINE int get_random_number(int bits) { |
| uint16_t bit; |
| bit = ((random_register >> 0) ^ (random_register >> 1) ^ |
| (random_register >> 3) ^ (random_register >> 12)) & |
| 1; |
| random_register = (random_register >> 1) | (bit << 15); |
| return (random_register >> (16 - bits)) & ((1 << bits) - 1); |
| } |
| |
| static void init_random_generator(int luma_line, uint16_t seed) { |
| // same for the picture |
| |
| uint16_t msb = (seed >> 8) & 255; |
| uint16_t lsb = seed & 255; |
| |
| random_register = (msb << 8) + lsb; |
| |
| // changes for each row |
| int luma_num = luma_line >> 5; |
| |
| random_register ^= ((luma_num * 37 + 178) & 255) << 8; |
| random_register ^= ((luma_num * 173 + 105) & 255); |
| } |
| |
| // Return 0 for success, -1 for failure |
| static int generate_luma_grain_block( |
| const aom_film_grain_t *params, int **pred_pos_luma, int *luma_grain_block, |
| int luma_block_size_y, int luma_block_size_x, int luma_grain_stride, |
| int left_pad, int top_pad, int right_pad, int bottom_pad) { |
| if (params->num_y_points == 0) { |
| memset(luma_grain_block, 0, |
| sizeof(*luma_grain_block) * luma_block_size_y * luma_grain_stride); |
| return 0; |
| } |
| |
| int bit_depth = params->bit_depth; |
| int gauss_sec_shift = 12 - bit_depth + params->grain_scale_shift; |
| |
| int num_pos_luma = 2 * params->ar_coeff_lag * (params->ar_coeff_lag + 1); |
| int rounding_offset = (1 << (params->ar_coeff_shift - 1)); |
| |
| for (int i = 0; i < luma_block_size_y; i++) |
| for (int j = 0; j < luma_block_size_x; j++) |
| luma_grain_block[i * luma_grain_stride + j] = |
| (gaussian_sequence[get_random_number(gauss_bits)] + |
| ((1 << gauss_sec_shift) >> 1)) >> |
| gauss_sec_shift; |
| |
| for (int i = top_pad; i < luma_block_size_y - bottom_pad; i++) |
| for (int j = left_pad; j < luma_block_size_x - right_pad; j++) { |
| int wsum = 0; |
| for (int pos = 0; pos < num_pos_luma; pos++) { |
| wsum = wsum + params->ar_coeffs_y[pos] * |
| luma_grain_block[(i + pred_pos_luma[pos][0]) * |
| luma_grain_stride + |
| j + pred_pos_luma[pos][1]]; |
| } |
| luma_grain_block[i * luma_grain_stride + j] = |
| clamp(luma_grain_block[i * luma_grain_stride + j] + |
| ((wsum + rounding_offset) >> params->ar_coeff_shift), |
| grain_min, grain_max); |
| } |
| return 0; |
| } |
| |
| // Return 0 for success, -1 for failure |
| static int generate_chroma_grain_blocks( |
| const aom_film_grain_t *params, |
| // int** pred_pos_luma, |
| int **pred_pos_chroma, int *luma_grain_block, int *cb_grain_block, |
| int *cr_grain_block, int luma_grain_stride, int chroma_block_size_y, |
| int chroma_block_size_x, int chroma_grain_stride, int left_pad, int top_pad, |
| int right_pad, int bottom_pad, int chroma_subsamp_y, int chroma_subsamp_x) { |
| int bit_depth = params->bit_depth; |
| int gauss_sec_shift = 12 - bit_depth + params->grain_scale_shift; |
| |
| int num_pos_chroma = 2 * params->ar_coeff_lag * (params->ar_coeff_lag + 1); |
| if (params->num_y_points > 0) ++num_pos_chroma; |
| int rounding_offset = (1 << (params->ar_coeff_shift - 1)); |
| int chroma_grain_block_size = chroma_block_size_y * chroma_grain_stride; |
| |
| if (params->num_cb_points || params->chroma_scaling_from_luma) { |
| init_random_generator(7 << 5, params->random_seed); |
| |
| for (int i = 0; i < chroma_block_size_y; i++) |
| for (int j = 0; j < chroma_block_size_x; j++) |
| cb_grain_block[i * chroma_grain_stride + j] = |
| (gaussian_sequence[get_random_number(gauss_bits)] + |
| ((1 << gauss_sec_shift) >> 1)) >> |
| gauss_sec_shift; |
| } else { |
| memset(cb_grain_block, 0, |
| sizeof(*cb_grain_block) * chroma_grain_block_size); |
| } |
| |
| if (params->num_cr_points || params->chroma_scaling_from_luma) { |
| init_random_generator(11 << 5, params->random_seed); |
| |
| for (int i = 0; i < chroma_block_size_y; i++) |
| for (int j = 0; j < chroma_block_size_x; j++) |
| cr_grain_block[i * chroma_grain_stride + j] = |
| (gaussian_sequence[get_random_number(gauss_bits)] + |
| ((1 << gauss_sec_shift) >> 1)) >> |
| gauss_sec_shift; |
| } else { |
| memset(cr_grain_block, 0, |
| sizeof(*cr_grain_block) * chroma_grain_block_size); |
| } |
| |
| for (int i = top_pad; i < chroma_block_size_y - bottom_pad; i++) |
| for (int j = left_pad; j < chroma_block_size_x - right_pad; j++) { |
| int wsum_cb = 0; |
| int wsum_cr = 0; |
| for (int pos = 0; pos < num_pos_chroma; pos++) { |
| if (pred_pos_chroma[pos][2] == 0) { |
| wsum_cb = wsum_cb + params->ar_coeffs_cb[pos] * |
| cb_grain_block[(i + pred_pos_chroma[pos][0]) * |
| chroma_grain_stride + |
| j + pred_pos_chroma[pos][1]]; |
| wsum_cr = wsum_cr + params->ar_coeffs_cr[pos] * |
| cr_grain_block[(i + pred_pos_chroma[pos][0]) * |
| chroma_grain_stride + |
| j + pred_pos_chroma[pos][1]]; |
| } else if (pred_pos_chroma[pos][2] == 1) { |
| int av_luma = 0; |
| int luma_coord_y = ((i - top_pad) << chroma_subsamp_y) + top_pad; |
| int luma_coord_x = ((j - left_pad) << chroma_subsamp_x) + left_pad; |
| |
| for (int k = luma_coord_y; k < luma_coord_y + chroma_subsamp_y + 1; |
| k++) |
| for (int l = luma_coord_x; l < luma_coord_x + chroma_subsamp_x + 1; |
| l++) |
| av_luma += luma_grain_block[k * luma_grain_stride + l]; |
| |
| av_luma = |
| (av_luma + ((1 << (chroma_subsamp_y + chroma_subsamp_x)) >> 1)) >> |
| (chroma_subsamp_y + chroma_subsamp_x); |
| |
| wsum_cb = wsum_cb + params->ar_coeffs_cb[pos] * av_luma; |
| wsum_cr = wsum_cr + params->ar_coeffs_cr[pos] * av_luma; |
| } else { |
| fprintf( |
| stderr, |
| "Grain synthesis: prediction between two chroma components is " |
| "not supported!"); |
| return -1; |
| } |
| } |
| if (params->num_cb_points || params->chroma_scaling_from_luma) |
| cb_grain_block[i * chroma_grain_stride + j] = |
| clamp(cb_grain_block[i * chroma_grain_stride + j] + |
| ((wsum_cb + rounding_offset) >> params->ar_coeff_shift), |
| grain_min, grain_max); |
| if (params->num_cr_points || params->chroma_scaling_from_luma) |
| cr_grain_block[i * chroma_grain_stride + j] = |
| clamp(cr_grain_block[i * chroma_grain_stride + j] + |
| ((wsum_cr + rounding_offset) >> params->ar_coeff_shift), |
| grain_min, grain_max); |
| } |
| return 0; |
| } |
| |
| static void init_scaling_function(const int scaling_points[][2], int num_points, |
| int scaling_lut[]) { |
| if (num_points == 0) return; |
| |
| for (int i = 0; i < scaling_points[0][0]; i++) |
| scaling_lut[i] = scaling_points[0][1]; |
| |
| for (int point = 0; point < num_points - 1; point++) { |
| int delta_y = scaling_points[point + 1][1] - scaling_points[point][1]; |
| int delta_x = scaling_points[point + 1][0] - scaling_points[point][0]; |
| |
| int64_t delta = delta_y * ((65536 + (delta_x >> 1)) / delta_x); |
| |
| for (int x = 0; x < delta_x; x++) { |
| scaling_lut[scaling_points[point][0] + x] = |
| scaling_points[point][1] + (int)((x * delta + 32768) >> 16); |
| } |
| } |
| |
| for (int i = scaling_points[num_points - 1][0]; i < 256; i++) |
| scaling_lut[i] = scaling_points[num_points - 1][1]; |
| } |
| |
| // function that extracts samples from a LUT (and interpolates intemediate |
| // frames for 10- and 12-bit video) |
| static int scale_LUT(int *scaling_lut, int index, int bit_depth) { |
| int x = index >> (bit_depth - 8); |
| |
| if (!(bit_depth - 8) || x == 255) |
| return scaling_lut[x]; |
| else |
| return scaling_lut[x] + (((scaling_lut[x + 1] - scaling_lut[x]) * |
| (index & ((1 << (bit_depth - 8)) - 1)) + |
| (1 << (bit_depth - 9))) >> |
| (bit_depth - 8)); |
| } |
| |
| static void add_noise_to_block(const aom_film_grain_t *params, uint8_t *luma, |
| uint8_t *cb, uint8_t *cr, int luma_stride, |
| int chroma_stride, int *luma_grain, |
| int *cb_grain, int *cr_grain, |
| int luma_grain_stride, int chroma_grain_stride, |
| int half_luma_height, int half_luma_width, |
| int bit_depth, int chroma_subsamp_y, |
| int chroma_subsamp_x, int mc_identity) { |
| int cb_mult = params->cb_mult - 128; // fixed scale |
| int cb_luma_mult = params->cb_luma_mult - 128; // fixed scale |
| int cb_offset = params->cb_offset - 256; |
| |
| int cr_mult = params->cr_mult - 128; // fixed scale |
| int cr_luma_mult = params->cr_luma_mult - 128; // fixed scale |
| int cr_offset = params->cr_offset - 256; |
| |
| int rounding_offset = (1 << (params->scaling_shift - 1)); |
| |
| int apply_y = params->num_y_points > 0 ? 1 : 0; |
| int apply_cb = |
| (params->num_cb_points > 0 || params->chroma_scaling_from_luma) ? 1 : 0; |
| int apply_cr = |
| (params->num_cr_points > 0 || params->chroma_scaling_from_luma) ? 1 : 0; |
| |
| if (params->chroma_scaling_from_luma) { |
| cb_mult = 0; // fixed scale |
| cb_luma_mult = 64; // fixed scale |
| cb_offset = 0; |
| |
| cr_mult = 0; // fixed scale |
| cr_luma_mult = 64; // fixed scale |
| cr_offset = 0; |
| } |
| |
| int min_luma, max_luma, min_chroma, max_chroma; |
| |
| if (params->clip_to_restricted_range) { |
| min_luma = min_luma_legal_range; |
| max_luma = max_luma_legal_range; |
| |
| if (mc_identity) { |
| min_chroma = min_luma_legal_range; |
| max_chroma = max_luma_legal_range; |
| } else { |
| min_chroma = min_chroma_legal_range; |
| max_chroma = max_chroma_legal_range; |
| } |
| } else { |
| min_luma = min_chroma = 0; |
| max_luma = max_chroma = 255; |
| } |
| |
| for (int i = 0; i < (half_luma_height << (1 - chroma_subsamp_y)); i++) { |
| for (int j = 0; j < (half_luma_width << (1 - chroma_subsamp_x)); j++) { |
| int average_luma = 0; |
| if (chroma_subsamp_x) { |
| average_luma = (luma[(i << chroma_subsamp_y) * luma_stride + |
| (j << chroma_subsamp_x)] + |
| luma[(i << chroma_subsamp_y) * luma_stride + |
| (j << chroma_subsamp_x) + 1] + |
| 1) >> |
| 1; |
| } else { |
| average_luma = luma[(i << chroma_subsamp_y) * luma_stride + j]; |
| } |
| |
| if (apply_cb) { |
| cb[i * chroma_stride + j] = clamp( |
| cb[i * chroma_stride + j] + |
| ((scale_LUT(scaling_lut_cb, |
| clamp(((average_luma * cb_luma_mult + |
| cb_mult * cb[i * chroma_stride + j]) >> |
| 6) + |
| cb_offset, |
| 0, (256 << (bit_depth - 8)) - 1), |
| 8) * |
| cb_grain[i * chroma_grain_stride + j] + |
| rounding_offset) >> |
| params->scaling_shift), |
| min_chroma, max_chroma); |
| } |
| |
| if (apply_cr) { |
| cr[i * chroma_stride + j] = clamp( |
| cr[i * chroma_stride + j] + |
| ((scale_LUT(scaling_lut_cr, |
| clamp(((average_luma * cr_luma_mult + |
| cr_mult * cr[i * chroma_stride + j]) >> |
| 6) + |
| cr_offset, |
| 0, (256 << (bit_depth - 8)) - 1), |
| 8) * |
| cr_grain[i * chroma_grain_stride + j] + |
| rounding_offset) >> |
| params->scaling_shift), |
| min_chroma, max_chroma); |
| } |
| } |
| } |
| |
| if (apply_y) { |
| for (int i = 0; i < (half_luma_height << 1); i++) { |
| for (int j = 0; j < (half_luma_width << 1); j++) { |
| luma[i * luma_stride + j] = |
| clamp(luma[i * luma_stride + j] + |
| ((scale_LUT(scaling_lut_y, luma[i * luma_stride + j], 8) * |
| luma_grain[i * luma_grain_stride + j] + |
| rounding_offset) >> |
| params->scaling_shift), |
| min_luma, max_luma); |
| } |
| } |
| } |
| } |
| |
| static void add_noise_to_block_hbd( |
| const aom_film_grain_t *params, uint16_t *luma, uint16_t *cb, uint16_t *cr, |
| int luma_stride, int chroma_stride, int *luma_grain, int *cb_grain, |
| int *cr_grain, int luma_grain_stride, int chroma_grain_stride, |
| int half_luma_height, int half_luma_width, int bit_depth, |
| int chroma_subsamp_y, int chroma_subsamp_x, int mc_identity) { |
| int cb_mult = params->cb_mult - 128; // fixed scale |
| int cb_luma_mult = params->cb_luma_mult - 128; // fixed scale |
| // offset value depends on the bit depth |
| int cb_offset = (params->cb_offset << (bit_depth - 8)) - (1 << bit_depth); |
| |
| int cr_mult = params->cr_mult - 128; // fixed scale |
| int cr_luma_mult = params->cr_luma_mult - 128; // fixed scale |
| // offset value depends on the bit depth |
| int cr_offset = (params->cr_offset << (bit_depth - 8)) - (1 << bit_depth); |
| |
| int rounding_offset = (1 << (params->scaling_shift - 1)); |
| |
| int apply_y = params->num_y_points > 0 ? 1 : 0; |
| int apply_cb = |
| (params->num_cb_points > 0 || params->chroma_scaling_from_luma) > 0 ? 1 |
| : 0; |
| int apply_cr = |
| (params->num_cr_points > 0 || params->chroma_scaling_from_luma) > 0 ? 1 |
| : 0; |
| |
| if (params->chroma_scaling_from_luma) { |
| cb_mult = 0; // fixed scale |
| cb_luma_mult = 64; // fixed scale |
| cb_offset = 0; |
| |
| cr_mult = 0; // fixed scale |
| cr_luma_mult = 64; // fixed scale |
| cr_offset = 0; |
| } |
| |
| int min_luma, max_luma, min_chroma, max_chroma; |
| |
| if (params->clip_to_restricted_range) { |
| min_luma = min_luma_legal_range << (bit_depth - 8); |
| max_luma = max_luma_legal_range << (bit_depth - 8); |
| |
| if (mc_identity) { |
| min_chroma = min_luma_legal_range << (bit_depth - 8); |
| max_chroma = max_luma_legal_range << (bit_depth - 8); |
| } else { |
| min_chroma = min_chroma_legal_range << (bit_depth - 8); |
| max_chroma = max_chroma_legal_range << (bit_depth - 8); |
| } |
| } else { |
| min_luma = min_chroma = 0; |
| max_luma = max_chroma = (256 << (bit_depth - 8)) - 1; |
| } |
| |
| for (int i = 0; i < (half_luma_height << (1 - chroma_subsamp_y)); i++) { |
| for (int j = 0; j < (half_luma_width << (1 - chroma_subsamp_x)); j++) { |
| int average_luma = 0; |
| if (chroma_subsamp_x) { |
| average_luma = (luma[(i << chroma_subsamp_y) * luma_stride + |
| (j << chroma_subsamp_x)] + |
| luma[(i << chroma_subsamp_y) * luma_stride + |
| (j << chroma_subsamp_x) + 1] + |
| 1) >> |
| 1; |
| } else { |
| average_luma = luma[(i << chroma_subsamp_y) * luma_stride + j]; |
| } |
| |
| if (apply_cb) { |
| cb[i * chroma_stride + j] = clamp( |
| cb[i * chroma_stride + j] + |
| ((scale_LUT(scaling_lut_cb, |
| clamp(((average_luma * cb_luma_mult + |
| cb_mult * cb[i * chroma_stride + j]) >> |
| 6) + |
| cb_offset, |
| 0, (256 << (bit_depth - 8)) - 1), |
| bit_depth) * |
| cb_grain[i * chroma_grain_stride + j] + |
| rounding_offset) >> |
| params->scaling_shift), |
| min_chroma, max_chroma); |
| } |
| if (apply_cr) { |
| cr[i * chroma_stride + j] = clamp( |
| cr[i * chroma_stride + j] + |
| ((scale_LUT(scaling_lut_cr, |
| clamp(((average_luma * cr_luma_mult + |
| cr_mult * cr[i * chroma_stride + j]) >> |
| 6) + |
| cr_offset, |
| 0, (256 << (bit_depth - 8)) - 1), |
| bit_depth) * |
| cr_grain[i * chroma_grain_stride + j] + |
| rounding_offset) >> |
| params->scaling_shift), |
| min_chroma, max_chroma); |
| } |
| } |
| } |
| |
| if (apply_y) { |
| for (int i = 0; i < (half_luma_height << 1); i++) { |
| for (int j = 0; j < (half_luma_width << 1); j++) { |
| luma[i * luma_stride + j] = |
| clamp(luma[i * luma_stride + j] + |
| ((scale_LUT(scaling_lut_y, luma[i * luma_stride + j], |
| bit_depth) * |
| luma_grain[i * luma_grain_stride + j] + |
| rounding_offset) >> |
| params->scaling_shift), |
| min_luma, max_luma); |
| } |
| } |
| } |
| } |
| |
| static void copy_rect(uint8_t *src, int src_stride, uint8_t *dst, |
| int dst_stride, int width, int height, |
| int use_high_bit_depth) { |
| int hbd_coeff = use_high_bit_depth ? 2 : 1; |
| while (height) { |
| memcpy(dst, src, width * sizeof(uint8_t) * hbd_coeff); |
| src += src_stride; |
| dst += dst_stride; |
| --height; |
| } |
| return; |
| } |
| |
| static void copy_area(int *src, int src_stride, int *dst, int dst_stride, |
| int width, int height) { |
| while (height) { |
| memcpy(dst, src, width * sizeof(*src)); |
| src += src_stride; |
| dst += dst_stride; |
| --height; |
| } |
| return; |
| } |
| |
| static void extend_even(uint8_t *dst, int dst_stride, int width, int height, |
| int use_high_bit_depth) { |
| if ((width & 1) == 0 && (height & 1) == 0) return; |
| if (use_high_bit_depth) { |
| uint16_t *dst16 = (uint16_t *)dst; |
| int dst16_stride = dst_stride / 2; |
| if (width & 1) { |
| for (int i = 0; i < height; ++i) |
| dst16[i * dst16_stride + width] = dst16[i * dst16_stride + width - 1]; |
| } |
| width = (width + 1) & (~1); |
| if (height & 1) { |
| memcpy(&dst16[height * dst16_stride], &dst16[(height - 1) * dst16_stride], |
| sizeof(*dst16) * width); |
| } |
| } else { |
| if (width & 1) { |
| for (int i = 0; i < height; ++i) |
| dst[i * dst_stride + width] = dst[i * dst_stride + width - 1]; |
| } |
| width = (width + 1) & (~1); |
| if (height & 1) { |
| memcpy(&dst[height * dst_stride], &dst[(height - 1) * dst_stride], |
| sizeof(*dst) * width); |
| } |
| } |
| } |
| |
| static void ver_boundary_overlap(int *left_block, int left_stride, |
| int *right_block, int right_stride, |
| int *dst_block, int dst_stride, int width, |
| int height) { |
| if (width == 1) { |
| while (height) { |
| *dst_block = clamp((*left_block * 23 + *right_block * 22 + 16) >> 5, |
| grain_min, grain_max); |
| left_block += left_stride; |
| right_block += right_stride; |
| dst_block += dst_stride; |
| --height; |
| } |
| return; |
| } else if (width == 2) { |
| while (height) { |
| dst_block[0] = clamp((27 * left_block[0] + 17 * right_block[0] + 16) >> 5, |
| grain_min, grain_max); |
| dst_block[1] = clamp((17 * left_block[1] + 27 * right_block[1] + 16) >> 5, |
| grain_min, grain_max); |
| left_block += left_stride; |
| right_block += right_stride; |
| dst_block += dst_stride; |
| --height; |
| } |
| return; |
| } |
| } |
| |
| static void hor_boundary_overlap(int *top_block, int top_stride, |
| int *bottom_block, int bottom_stride, |
| int *dst_block, int dst_stride, int width, |
| int height) { |
| if (height == 1) { |
| while (width) { |
| *dst_block = clamp((*top_block * 23 + *bottom_block * 22 + 16) >> 5, |
| grain_min, grain_max); |
| ++top_block; |
| ++bottom_block; |
| ++dst_block; |
| --width; |
| } |
| return; |
| } else if (height == 2) { |
| while (width) { |
| dst_block[0] = clamp((27 * top_block[0] + 17 * bottom_block[0] + 16) >> 5, |
| grain_min, grain_max); |
| dst_block[dst_stride] = clamp((17 * top_block[top_stride] + |
| 27 * bottom_block[bottom_stride] + 16) >> |
| 5, |
| grain_min, grain_max); |
| ++top_block; |
| ++bottom_block; |
| ++dst_block; |
| --width; |
| } |
| return; |
| } |
| } |
| |
| int av1_add_film_grain(const aom_film_grain_t *params, const aom_image_t *src, |
| aom_image_t *dst) { |
| uint8_t *luma, *cb, *cr; |
| int height, width, luma_stride, chroma_stride; |
| int use_high_bit_depth = 0; |
| int chroma_subsamp_x = 0; |
| int chroma_subsamp_y = 0; |
| int mc_identity = src->mc == AOM_CICP_MC_IDENTITY ? 1 : 0; |
| |
| switch (src->fmt) { |
| case AOM_IMG_FMT_AOMI420: |
| case AOM_IMG_FMT_I420: |
| use_high_bit_depth = 0; |
| chroma_subsamp_x = 1; |
| chroma_subsamp_y = 1; |
| break; |
| case AOM_IMG_FMT_I42016: |
| use_high_bit_depth = 1; |
| chroma_subsamp_x = 1; |
| chroma_subsamp_y = 1; |
| break; |
| // case AOM_IMG_FMT_444A: |
| case AOM_IMG_FMT_I444: |
| use_high_bit_depth = 0; |
| chroma_subsamp_x = 0; |
| chroma_subsamp_y = 0; |
| break; |
| case AOM_IMG_FMT_I44416: |
| use_high_bit_depth = 1; |
| chroma_subsamp_x = 0; |
| chroma_subsamp_y = 0; |
| break; |
| case AOM_IMG_FMT_I422: |
| use_high_bit_depth = 0; |
| chroma_subsamp_x = 1; |
| chroma_subsamp_y = 0; |
| break; |
| case AOM_IMG_FMT_I42216: |
| use_high_bit_depth = 1; |
| chroma_subsamp_x = 1; |
| chroma_subsamp_y = 0; |
| break; |
| default: // unknown input format |
| fprintf(stderr, "Film grain error: input format is not supported!"); |
| return -1; |
| } |
| |
| assert(params->bit_depth == src->bit_depth); |
| |
| dst->fmt = src->fmt; |
| dst->bit_depth = src->bit_depth; |
| |
| dst->r_w = src->r_w; |
| dst->r_h = src->r_h; |
| dst->d_w = src->d_w; |
| dst->d_h = src->d_h; |
| |
| dst->cp = src->cp; |
| dst->tc = src->tc; |
| dst->mc = src->mc; |
| |
| dst->monochrome = src->monochrome; |
| dst->csp = src->csp; |
| dst->range = src->range; |
| |
| dst->x_chroma_shift = src->x_chroma_shift; |
| dst->y_chroma_shift = src->y_chroma_shift; |
| |
| dst->temporal_id = src->temporal_id; |
| dst->spatial_id = src->spatial_id; |
| |
| width = src->d_w % 2 ? src->d_w + 1 : src->d_w; |
| height = src->d_h % 2 ? src->d_h + 1 : src->d_h; |
| |
| copy_rect(src->planes[AOM_PLANE_Y], src->stride[AOM_PLANE_Y], |
| dst->planes[AOM_PLANE_Y], dst->stride[AOM_PLANE_Y], src->d_w, |
| src->d_h, use_high_bit_depth); |
| // Note that dst is already assumed to be aligned to even. |
| extend_even(dst->planes[AOM_PLANE_Y], dst->stride[AOM_PLANE_Y], src->d_w, |
| src->d_h, use_high_bit_depth); |
| |
| if (!src->monochrome) { |
| copy_rect(src->planes[AOM_PLANE_U], src->stride[AOM_PLANE_U], |
| dst->planes[AOM_PLANE_U], dst->stride[AOM_PLANE_U], |
| width >> chroma_subsamp_x, height >> chroma_subsamp_y, |
| use_high_bit_depth); |
| |
| copy_rect(src->planes[AOM_PLANE_V], src->stride[AOM_PLANE_V], |
| dst->planes[AOM_PLANE_V], dst->stride[AOM_PLANE_V], |
| width >> chroma_subsamp_x, height >> chroma_subsamp_y, |
| use_high_bit_depth); |
| } |
| |
| luma = dst->planes[AOM_PLANE_Y]; |
| cb = dst->planes[AOM_PLANE_U]; |
| cr = dst->planes[AOM_PLANE_V]; |
| |
| // luma and chroma strides in samples |
| luma_stride = dst->stride[AOM_PLANE_Y] >> use_high_bit_depth; |
| chroma_stride = dst->stride[AOM_PLANE_U] >> use_high_bit_depth; |
| |
| return av1_add_film_grain_run( |
| params, luma, cb, cr, height, width, luma_stride, chroma_stride, |
| use_high_bit_depth, chroma_subsamp_y, chroma_subsamp_x, mc_identity); |
| } |
| |
| int av1_add_film_grain_run(const aom_film_grain_t *params, uint8_t *luma, |
| uint8_t *cb, uint8_t *cr, int height, int width, |
| int luma_stride, int chroma_stride, |
| int use_high_bit_depth, int chroma_subsamp_y, |
| int chroma_subsamp_x, int mc_identity) { |
| int **pred_pos_luma; |
| int **pred_pos_chroma; |
| int *luma_grain_block; |
| int *cb_grain_block; |
| int *cr_grain_block; |
| |
| int *y_line_buf; |
| int *cb_line_buf; |
| int *cr_line_buf; |
| |
| int *y_col_buf; |
| int *cb_col_buf; |
| int *cr_col_buf; |
| |
| random_register = params->random_seed; |
| |
| int left_pad = 3; |
| int right_pad = 3; // padding to offset for AR coefficients |
| int top_pad = 3; |
| int bottom_pad = 0; |
| |
| int ar_padding = 3; // maximum lag used for stabilization of AR coefficients |
| |
| luma_subblock_size_y = 32; |
| luma_subblock_size_x = 32; |
| |
| chroma_subblock_size_y = luma_subblock_size_y >> chroma_subsamp_y; |
| chroma_subblock_size_x = luma_subblock_size_x >> chroma_subsamp_x; |
| |
| // Initial padding is only needed for generation of |
| // film grain templates (to stabilize the AR process) |
| // Only a 64x64 luma and 32x32 chroma part of a template |
| // is used later for adding grain, padding can be discarded |
| |
| int luma_block_size_y = |
| top_pad + 2 * ar_padding + luma_subblock_size_y * 2 + bottom_pad; |
| int luma_block_size_x = left_pad + 2 * ar_padding + luma_subblock_size_x * 2 + |
| 2 * ar_padding + right_pad; |
| |
| int chroma_block_size_y = top_pad + (2 >> chroma_subsamp_y) * ar_padding + |
| chroma_subblock_size_y * 2 + bottom_pad; |
| int chroma_block_size_x = left_pad + (2 >> chroma_subsamp_x) * ar_padding + |
| chroma_subblock_size_x * 2 + |
| (2 >> chroma_subsamp_x) * ar_padding + right_pad; |
| |
| int luma_grain_stride = luma_block_size_x; |
| int chroma_grain_stride = chroma_block_size_x; |
| |
| int overlap = params->overlap_flag; |
| int bit_depth = params->bit_depth; |
| |
| const int grain_center = 128 << (bit_depth - 8); |
| grain_min = 0 - grain_center; |
| grain_max = grain_center - 1; |
| |
| init_arrays(params, luma_stride, chroma_stride, &pred_pos_luma, |
| &pred_pos_chroma, &luma_grain_block, &cb_grain_block, |
| &cr_grain_block, &y_line_buf, &cb_line_buf, &cr_line_buf, |
| &y_col_buf, &cb_col_buf, &cr_col_buf, |
| luma_block_size_y * luma_block_size_x, |
| chroma_block_size_y * chroma_block_size_x, chroma_subsamp_y, |
| chroma_subsamp_x); |
| |
| if (generate_luma_grain_block(params, pred_pos_luma, luma_grain_block, |
| luma_block_size_y, luma_block_size_x, |
| luma_grain_stride, left_pad, top_pad, right_pad, |
| bottom_pad)) |
| return -1; |
| |
| if (generate_chroma_grain_blocks( |
| params, |
| // pred_pos_luma, |
| pred_pos_chroma, luma_grain_block, cb_grain_block, cr_grain_block, |
| luma_grain_stride, chroma_block_size_y, chroma_block_size_x, |
| chroma_grain_stride, left_pad, top_pad, right_pad, bottom_pad, |
| chroma_subsamp_y, chroma_subsamp_x)) |
| return -1; |
| |
| init_scaling_function(params->scaling_points_y, params->num_y_points, |
| scaling_lut_y); |
| |
| if (params->chroma_scaling_from_luma) { |
| memcpy(scaling_lut_cb, scaling_lut_y, sizeof(*scaling_lut_y) * 256); |
| memcpy(scaling_lut_cr, scaling_lut_y, sizeof(*scaling_lut_y) * 256); |
| } else { |
| init_scaling_function(params->scaling_points_cb, params->num_cb_points, |
| scaling_lut_cb); |
| init_scaling_function(params->scaling_points_cr, params->num_cr_points, |
| scaling_lut_cr); |
| } |
| for (int y = 0; y < height / 2; y += (luma_subblock_size_y >> 1)) { |
| init_random_generator(y * 2, params->random_seed); |
| |
| for (int x = 0; x < width / 2; x += (luma_subblock_size_x >> 1)) { |
| int offset_y = get_random_number(8); |
| int offset_x = (offset_y >> 4) & 15; |
| offset_y &= 15; |
| |
| int luma_offset_y = left_pad + 2 * ar_padding + (offset_y << 1); |
| int luma_offset_x = top_pad + 2 * ar_padding + (offset_x << 1); |
| |
| int chroma_offset_y = top_pad + (2 >> chroma_subsamp_y) * ar_padding + |
| offset_y * (2 >> chroma_subsamp_y); |
| int chroma_offset_x = left_pad + (2 >> chroma_subsamp_x) * ar_padding + |
| offset_x * (2 >> chroma_subsamp_x); |
| |
| if (overlap && x) { |
| ver_boundary_overlap( |
| y_col_buf, 2, |
| luma_grain_block + luma_offset_y * luma_grain_stride + |
| luma_offset_x, |
| luma_grain_stride, y_col_buf, 2, 2, |
| AOMMIN(luma_subblock_size_y + 2, height - (y << 1))); |
| |
| ver_boundary_overlap( |
| cb_col_buf, 2 >> chroma_subsamp_x, |
| cb_grain_block + chroma_offset_y * chroma_grain_stride + |
| chroma_offset_x, |
| chroma_grain_stride, cb_col_buf, 2 >> chroma_subsamp_x, |
| 2 >> chroma_subsamp_x, |
| AOMMIN(chroma_subblock_size_y + (2 >> chroma_subsamp_y), |
| (height - (y << 1)) >> chroma_subsamp_y)); |
| |
| ver_boundary_overlap( |
| cr_col_buf, 2 >> chroma_subsamp_x, |
| cr_grain_block + chroma_offset_y * chroma_grain_stride + |
| chroma_offset_x, |
| chroma_grain_stride, cr_col_buf, 2 >> chroma_subsamp_x, |
| 2 >> chroma_subsamp_x, |
| AOMMIN(chroma_subblock_size_y + (2 >> chroma_subsamp_y), |
| (height - (y << 1)) >> chroma_subsamp_y)); |
| |
| int i = y ? 1 : 0; |
| |
| if (use_high_bit_depth) { |
| add_noise_to_block_hbd( |
| params, |
| (uint16_t *)luma + ((y + i) << 1) * luma_stride + (x << 1), |
| (uint16_t *)cb + |
| ((y + i) << (1 - chroma_subsamp_y)) * chroma_stride + |
| (x << (1 - chroma_subsamp_x)), |
| (uint16_t *)cr + |
| ((y + i) << (1 - chroma_subsamp_y)) * chroma_stride + |
| (x << (1 - chroma_subsamp_x)), |
| luma_stride, chroma_stride, y_col_buf + i * 4, |
| cb_col_buf + i * (2 - chroma_subsamp_y) * (2 - chroma_subsamp_x), |
| cr_col_buf + i * (2 - chroma_subsamp_y) * (2 - chroma_subsamp_x), |
| 2, (2 - chroma_subsamp_x), |
| AOMMIN(luma_subblock_size_y >> 1, height / 2 - y) - i, 1, |
| bit_depth, chroma_subsamp_y, chroma_subsamp_x, mc_identity); |
| } else { |
| add_noise_to_block( |
| params, luma + ((y + i) << 1) * luma_stride + (x << 1), |
| cb + ((y + i) << (1 - chroma_subsamp_y)) * chroma_stride + |
| (x << (1 - chroma_subsamp_x)), |
| cr + ((y + i) << (1 - chroma_subsamp_y)) * chroma_stride + |
| (x << (1 - chroma_subsamp_x)), |
| luma_stride, chroma_stride, y_col_buf + i * 4, |
| cb_col_buf + i * (2 - chroma_subsamp_y) * (2 - chroma_subsamp_x), |
| cr_col_buf + i * (2 - chroma_subsamp_y) * (2 - chroma_subsamp_x), |
| 2, (2 - chroma_subsamp_x), |
| AOMMIN(luma_subblock_size_y >> 1, height / 2 - y) - i, 1, |
| bit_depth, chroma_subsamp_y, chroma_subsamp_x, mc_identity); |
| } |
| } |
| |
| if (overlap && y) { |
| if (x) { |
| hor_boundary_overlap(y_line_buf + (x << 1), luma_stride, y_col_buf, 2, |
| y_line_buf + (x << 1), luma_stride, 2, 2); |
| |
| hor_boundary_overlap(cb_line_buf + x * (2 >> chroma_subsamp_x), |
| chroma_stride, cb_col_buf, 2 >> chroma_subsamp_x, |
| cb_line_buf + x * (2 >> chroma_subsamp_x), |
| chroma_stride, 2 >> chroma_subsamp_x, |
| 2 >> chroma_subsamp_y); |
| |
| hor_boundary_overlap(cr_line_buf + x * (2 >> chroma_subsamp_x), |
| chroma_stride, cr_col_buf, 2 >> chroma_subsamp_x, |
| cr_line_buf + x * (2 >> chroma_subsamp_x), |
| chroma_stride, 2 >> chroma_subsamp_x, |
| 2 >> chroma_subsamp_y); |
| } |
| |
| hor_boundary_overlap( |
| y_line_buf + ((x ? x + 1 : 0) << 1), luma_stride, |
| luma_grain_block + luma_offset_y * luma_grain_stride + |
| luma_offset_x + (x ? 2 : 0), |
| luma_grain_stride, y_line_buf + ((x ? x + 1 : 0) << 1), luma_stride, |
| AOMMIN(luma_subblock_size_x - ((x ? 1 : 0) << 1), |
| width - ((x ? x + 1 : 0) << 1)), |
| 2); |
| |
| hor_boundary_overlap( |
| cb_line_buf + ((x ? x + 1 : 0) << (1 - chroma_subsamp_x)), |
| chroma_stride, |
| cb_grain_block + chroma_offset_y * chroma_grain_stride + |
| chroma_offset_x + ((x ? 1 : 0) << (1 - chroma_subsamp_x)), |
| chroma_grain_stride, |
| cb_line_buf + ((x ? x + 1 : 0) << (1 - chroma_subsamp_x)), |
| chroma_stride, |
| AOMMIN(chroma_subblock_size_x - |
| ((x ? 1 : 0) << (1 - chroma_subsamp_x)), |
| (width - ((x ? x + 1 : 0) << 1)) >> chroma_subsamp_x), |
| 2 >> chroma_subsamp_y); |
| |
| hor_boundary_overlap( |
| cr_line_buf + ((x ? x + 1 : 0) << (1 - chroma_subsamp_x)), |
| chroma_stride, |
| cr_grain_block + chroma_offset_y * chroma_grain_stride + |
| chroma_offset_x + ((x ? 1 : 0) << (1 - chroma_subsamp_x)), |
| chroma_grain_stride, |
| cr_line_buf + ((x ? x + 1 : 0) << (1 - chroma_subsamp_x)), |
| chroma_stride, |
| AOMMIN(chroma_subblock_size_x - |
| ((x ? 1 : 0) << (1 - chroma_subsamp_x)), |
| (width - ((x ? x + 1 : 0) << 1)) >> chroma_subsamp_x), |
| 2 >> chroma_subsamp_y); |
| |
| if (use_high_bit_depth) { |
| add_noise_to_block_hbd( |
| params, (uint16_t *)luma + (y << 1) * luma_stride + (x << 1), |
| (uint16_t *)cb + (y << (1 - chroma_subsamp_y)) * chroma_stride + |
| (x << ((1 - chroma_subsamp_x))), |
| (uint16_t *)cr + (y << (1 - chroma_subsamp_y)) * chroma_stride + |
| (x << ((1 - chroma_subsamp_x))), |
| luma_stride, chroma_stride, y_line_buf + (x << 1), |
| cb_line_buf + (x << (1 - chroma_subsamp_x)), |
| cr_line_buf + (x << (1 - chroma_subsamp_x)), luma_stride, |
| chroma_stride, 1, |
| AOMMIN(luma_subblock_size_x >> 1, width / 2 - x), bit_depth, |
| chroma_subsamp_y, chroma_subsamp_x, mc_identity); |
| } else { |
| add_noise_to_block( |
| params, luma + (y << 1) * luma_stride + (x << 1), |
| cb + (y << (1 - chroma_subsamp_y)) * chroma_stride + |
| (x << ((1 - chroma_subsamp_x))), |
| cr + (y << (1 - chroma_subsamp_y)) * chroma_stride + |
| (x << ((1 - chroma_subsamp_x))), |
| luma_stride, chroma_stride, y_line_buf + (x << 1), |
| cb_line_buf + (x << (1 - chroma_subsamp_x)), |
| cr_line_buf + (x << (1 - chroma_subsamp_x)), luma_stride, |
| chroma_stride, 1, |
| AOMMIN(luma_subblock_size_x >> 1, width / 2 - x), bit_depth, |
| chroma_subsamp_y, chroma_subsamp_x, mc_identity); |
| } |
| } |
| |
| int i = overlap && y ? 1 : 0; |
| int j = overlap && x ? 1 : 0; |
| |
| if (use_high_bit_depth) { |
| add_noise_to_block_hbd( |
| params, |
| (uint16_t *)luma + ((y + i) << 1) * luma_stride + ((x + j) << 1), |
| (uint16_t *)cb + |
| ((y + i) << (1 - chroma_subsamp_y)) * chroma_stride + |
| ((x + j) << (1 - chroma_subsamp_x)), |
| (uint16_t *)cr + |
| ((y + i) << (1 - chroma_subsamp_y)) * chroma_stride + |
| ((x + j) << (1 - chroma_subsamp_x)), |
| luma_stride, chroma_stride, |
| luma_grain_block + (luma_offset_y + (i << 1)) * luma_grain_stride + |
| luma_offset_x + (j << 1), |
| cb_grain_block + |
| (chroma_offset_y + (i << (1 - chroma_subsamp_y))) * |
| chroma_grain_stride + |
| chroma_offset_x + (j << (1 - chroma_subsamp_x)), |
| cr_grain_block + |
| (chroma_offset_y + (i << (1 - chroma_subsamp_y))) * |
| chroma_grain_stride + |
| chroma_offset_x + (j << (1 - chroma_subsamp_x)), |
| luma_grain_stride, chroma_grain_stride, |
| AOMMIN(luma_subblock_size_y >> 1, height / 2 - y) - i, |
| AOMMIN(luma_subblock_size_x >> 1, width / 2 - x) - j, bit_depth, |
| chroma_subsamp_y, chroma_subsamp_x, mc_identity); |
| } else { |
| add_noise_to_block( |
| params, luma + ((y + i) << 1) * luma_stride + ((x + j) << 1), |
| cb + ((y + i) << (1 - chroma_subsamp_y)) * chroma_stride + |
| ((x + j) << (1 - chroma_subsamp_x)), |
| cr + ((y + i) << (1 - chroma_subsamp_y)) * chroma_stride + |
| ((x + j) << (1 - chroma_subsamp_x)), |
| luma_stride, chroma_stride, |
| luma_grain_block + (luma_offset_y + (i << 1)) * luma_grain_stride + |
| luma_offset_x + (j << 1), |
| cb_grain_block + |
| (chroma_offset_y + (i << (1 - chroma_subsamp_y))) * |
| chroma_grain_stride + |
| chroma_offset_x + (j << (1 - chroma_subsamp_x)), |
| cr_grain_block + |
| (chroma_offset_y + (i << (1 - chroma_subsamp_y))) * |
| chroma_grain_stride + |
| chroma_offset_x + (j << (1 - chroma_subsamp_x)), |
| luma_grain_stride, chroma_grain_stride, |
| AOMMIN(luma_subblock_size_y >> 1, height / 2 - y) - i, |
| AOMMIN(luma_subblock_size_x >> 1, width / 2 - x) - j, bit_depth, |
| chroma_subsamp_y, chroma_subsamp_x, mc_identity); |
| } |
| |
| if (overlap) { |
| if (x) { |
| // Copy overlapped column bufer to line buffer |
| copy_area(y_col_buf + (luma_subblock_size_y << 1), 2, |
| y_line_buf + (x << 1), luma_stride, 2, 2); |
| |
| copy_area( |
| cb_col_buf + (chroma_subblock_size_y << (1 - chroma_subsamp_x)), |
| 2 >> chroma_subsamp_x, |
| cb_line_buf + (x << (1 - chroma_subsamp_x)), chroma_stride, |
| 2 >> chroma_subsamp_x, 2 >> chroma_subsamp_y); |
| |
| copy_area( |
| cr_col_buf + (chroma_subblock_size_y << (1 - chroma_subsamp_x)), |
| 2 >> chroma_subsamp_x, |
| cr_line_buf + (x << (1 - chroma_subsamp_x)), chroma_stride, |
| 2 >> chroma_subsamp_x, 2 >> chroma_subsamp_y); |
| } |
| |
| // Copy grain to the line buffer for overlap with a bottom block |
| copy_area( |
| luma_grain_block + |
| (luma_offset_y + luma_subblock_size_y) * luma_grain_stride + |
| luma_offset_x + ((x ? 2 : 0)), |
| luma_grain_stride, y_line_buf + ((x ? x + 1 : 0) << 1), luma_stride, |
| AOMMIN(luma_subblock_size_x, width - (x << 1)) - (x ? 2 : 0), 2); |
| |
| copy_area(cb_grain_block + |
| (chroma_offset_y + chroma_subblock_size_y) * |
| chroma_grain_stride + |
| chroma_offset_x + (x ? 2 >> chroma_subsamp_x : 0), |
| chroma_grain_stride, |
| cb_line_buf + ((x ? x + 1 : 0) << (1 - chroma_subsamp_x)), |
| chroma_stride, |
| AOMMIN(chroma_subblock_size_x, |
| ((width - (x << 1)) >> chroma_subsamp_x)) - |
| (x ? 2 >> chroma_subsamp_x : 0), |
| 2 >> chroma_subsamp_y); |
| |
| copy_area(cr_grain_block + |
| (chroma_offset_y + chroma_subblock_size_y) * |
| chroma_grain_stride + |
| chroma_offset_x + (x ? 2 >> chroma_subsamp_x : 0), |
| chroma_grain_stride, |
| cr_line_buf + ((x ? x + 1 : 0) << (1 - chroma_subsamp_x)), |
| chroma_stride, |
| AOMMIN(chroma_subblock_size_x, |
| ((width - (x << 1)) >> chroma_subsamp_x)) - |
| (x ? 2 >> chroma_subsamp_x : 0), |
| 2 >> chroma_subsamp_y); |
| |
| // Copy grain to the column buffer for overlap with the next block to |
| // the right |
| |
| copy_area(luma_grain_block + luma_offset_y * luma_grain_stride + |
| luma_offset_x + luma_subblock_size_x, |
| luma_grain_stride, y_col_buf, 2, 2, |
| AOMMIN(luma_subblock_size_y + 2, height - (y << 1))); |
| |
| copy_area(cb_grain_block + chroma_offset_y * chroma_grain_stride + |
| chroma_offset_x + chroma_subblock_size_x, |
| chroma_grain_stride, cb_col_buf, 2 >> chroma_subsamp_x, |
| 2 >> chroma_subsamp_x, |
| AOMMIN(chroma_subblock_size_y + (2 >> chroma_subsamp_y), |
| (height - (y << 1)) >> chroma_subsamp_y)); |
| |
| copy_area(cr_grain_block + chroma_offset_y * chroma_grain_stride + |
| chroma_offset_x + chroma_subblock_size_x, |
| chroma_grain_stride, cr_col_buf, 2 >> chroma_subsamp_x, |
| 2 >> chroma_subsamp_x, |
| AOMMIN(chroma_subblock_size_y + (2 >> chroma_subsamp_y), |
| (height - (y << 1)) >> chroma_subsamp_y)); |
| } |
| } |
| } |
| |
| dealloc_arrays(params, &pred_pos_luma, &pred_pos_chroma, &luma_grain_block, |
| &cb_grain_block, &cr_grain_block, &y_line_buf, &cb_line_buf, |
| &cr_line_buf, &y_col_buf, &cb_col_buf, &cr_col_buf); |
| return 0; |
| } |
