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Diffstat (limited to 'third_party/aom/av1/common/av1_txfm.h')
| -rw-r--r-- | third_party/aom/av1/common/av1_txfm.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/av1_txfm.h b/third_party/aom/av1/common/av1_txfm.h new file mode 100644 index 000000000..6987317ae --- /dev/null +++ b/third_party/aom/av1/common/av1_txfm.h @@ -0,0 +1,211 @@ +/* + * 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. + */ + +#ifndef AV1_TXFM_H_ +#define AV1_TXFM_H_ + +#include <assert.h> +#include <math.h> +#include <stdio.h> + +#include "av1/common/enums.h" +#include "aom/aom_integer.h" +#include "aom_dsp/aom_dsp_common.h" + +static const int cos_bit_min = 10; +static const int cos_bit_max = 16; + +// cospi_arr[i][j] = (int)round(cos(M_PI*j/128) * (1<<(cos_bit_min+i))); +static const int32_t cospi_arr[7][64] = { + { 1024, 1024, 1023, 1021, 1019, 1016, 1013, 1009, 1004, 999, 993, 987, 980, + 972, 964, 955, 946, 936, 926, 915, 903, 891, 878, 865, 851, 837, + 822, 807, 792, 775, 759, 742, 724, 706, 688, 669, 650, 630, 610, + 590, 569, 548, 526, 505, 483, 460, 438, 415, 392, 369, 345, 321, + 297, 273, 249, 224, 200, 175, 150, 125, 100, 75, 50, 25 }, + { 2048, 2047, 2046, 2042, 2038, 2033, 2026, 2018, 2009, 1998, 1987, + 1974, 1960, 1945, 1928, 1911, 1892, 1872, 1851, 1829, 1806, 1782, + 1757, 1730, 1703, 1674, 1645, 1615, 1583, 1551, 1517, 1483, 1448, + 1412, 1375, 1338, 1299, 1260, 1220, 1179, 1138, 1096, 1053, 1009, + 965, 921, 876, 830, 784, 737, 690, 642, 595, 546, 498, + 449, 400, 350, 301, 251, 201, 151, 100, 50 }, + { 4096, 4095, 4091, 4085, 4076, 4065, 4052, 4036, 4017, 3996, 3973, + 3948, 3920, 3889, 3857, 3822, 3784, 3745, 3703, 3659, 3612, 3564, + 3513, 3461, 3406, 3349, 3290, 3229, 3166, 3102, 3035, 2967, 2896, + 2824, 2751, 2675, 2598, 2520, 2440, 2359, 2276, 2191, 2106, 2019, + 1931, 1842, 1751, 1660, 1567, 1474, 1380, 1285, 1189, 1092, 995, + 897, 799, 700, 601, 501, 401, 301, 201, 101 }, + { 8192, 8190, 8182, 8170, 8153, 8130, 8103, 8071, 8035, 7993, 7946, + 7895, 7839, 7779, 7713, 7643, 7568, 7489, 7405, 7317, 7225, 7128, + 7027, 6921, 6811, 6698, 6580, 6458, 6333, 6203, 6070, 5933, 5793, + 5649, 5501, 5351, 5197, 5040, 4880, 4717, 4551, 4383, 4212, 4038, + 3862, 3683, 3503, 3320, 3135, 2948, 2760, 2570, 2378, 2185, 1990, + 1795, 1598, 1401, 1202, 1003, 803, 603, 402, 201 }, + { 16384, 16379, 16364, 16340, 16305, 16261, 16207, 16143, 16069, 15986, 15893, + 15791, 15679, 15557, 15426, 15286, 15137, 14978, 14811, 14635, 14449, 14256, + 14053, 13842, 13623, 13395, 13160, 12916, 12665, 12406, 12140, 11866, 11585, + 11297, 11003, 10702, 10394, 10080, 9760, 9434, 9102, 8765, 8423, 8076, + 7723, 7366, 7005, 6639, 6270, 5897, 5520, 5139, 4756, 4370, 3981, + 3590, 3196, 2801, 2404, 2006, 1606, 1205, 804, 402 }, + { 32768, 32758, 32729, 32679, 32610, 32522, 32413, 32286, 32138, 31972, 31786, + 31581, 31357, 31114, 30853, 30572, 30274, 29957, 29622, 29269, 28899, 28511, + 28106, 27684, 27246, 26791, 26320, 25833, 25330, 24812, 24279, 23732, 23170, + 22595, 22006, 21403, 20788, 20160, 19520, 18868, 18205, 17531, 16846, 16151, + 15447, 14733, 14010, 13279, 12540, 11793, 11039, 10279, 9512, 8740, 7962, + 7180, 6393, 5602, 4808, 4011, 3212, 2411, 1608, 804 }, + { 65536, 65516, 65457, 65358, 65220, 65043, 64827, 64571, 64277, 63944, 63572, + 63162, 62714, 62228, 61705, 61145, 60547, 59914, 59244, 58538, 57798, 57022, + 56212, 55368, 54491, 53581, 52639, 51665, 50660, 49624, 48559, 47464, 46341, + 45190, 44011, 42806, 41576, 40320, 39040, 37736, 36410, 35062, 33692, 32303, + 30893, 29466, 28020, 26558, 25080, 23586, 22078, 20557, 19024, 17479, 15924, + 14359, 12785, 11204, 9616, 8022, 6424, 4821, 3216, 1608 } +}; + +static INLINE int32_t round_shift(int32_t value, int bit) { + assert(bit >= 1); + return (value + (1 << (bit - 1))) >> bit; +} + +static INLINE void round_shift_array(int32_t *arr, int size, int bit) { + int i; + if (bit == 0) { + return; + } else { + if (bit > 0) { + for (i = 0; i < size; i++) { + arr[i] = round_shift(arr[i], bit); + } + } else { + for (i = 0; i < size; i++) { + arr[i] = arr[i] * (1 << (-bit)); + } + } + } +} + +static INLINE int32_t half_btf(int32_t w0, int32_t in0, int32_t w1, int32_t in1, + int bit) { + int32_t result_32 = w0 * in0 + w1 * in1; +#if CONFIG_COEFFICIENT_RANGE_CHECKING + int64_t result_64 = (int64_t)w0 * (int64_t)in0 + (int64_t)w1 * (int64_t)in1; + if (result_64 < INT32_MIN || result_64 > INT32_MAX) { + printf("%s %d overflow result_32: %d result_64: %" PRId64 + " w0: %d in0: %d w1: %d in1: " + "%d\n", + __FILE__, __LINE__, result_32, result_64, w0, in0, w1, in1); + assert(0 && "half_btf overflow"); + } +#endif + return round_shift(result_32, bit); +} + +static INLINE int get_max_bit(int x) { + int max_bit = -1; + while (x) { + x = x >> 1; + max_bit++; + } + return max_bit; +} + +// TODO(angiebird): implement SSE +static INLINE void clamp_block(int16_t *block, int block_size, int stride, + int low, int high) { + int i, j; + for (i = 0; i < block_size; ++i) { + for (j = 0; j < block_size; ++j) { + block[i * stride + j] = clamp(block[i * stride + j], low, high); + } + } +} + +typedef void (*TxfmFunc)(const int32_t *input, int32_t *output, + const int8_t *cos_bit, const int8_t *stage_range); + +typedef enum TXFM_TYPE { + TXFM_TYPE_DCT4, + TXFM_TYPE_DCT8, + TXFM_TYPE_DCT16, + TXFM_TYPE_DCT32, + TXFM_TYPE_DCT64, + TXFM_TYPE_ADST4, + TXFM_TYPE_ADST8, + TXFM_TYPE_ADST16, + TXFM_TYPE_ADST32, +} TXFM_TYPE; + +typedef struct TXFM_2D_CFG { + const int txfm_size; + const int stage_num_col; + const int stage_num_row; + + const int8_t *shift; + const int8_t *stage_range_col; + const int8_t *stage_range_row; + const int8_t *cos_bit_col; + const int8_t *cos_bit_row; + const TXFM_TYPE txfm_type_col; + const TXFM_TYPE txfm_type_row; +} TXFM_2D_CFG; + +typedef struct TXFM_2D_FLIP_CFG { + int ud_flip; // flip upside down + int lr_flip; // flip left to right + const TXFM_2D_CFG *cfg; +} TXFM_2D_FLIP_CFG; + +static INLINE void set_flip_cfg(int tx_type, TXFM_2D_FLIP_CFG *cfg) { + switch (tx_type) { + case DCT_DCT: + case ADST_DCT: + case DCT_ADST: + case ADST_ADST: + cfg->ud_flip = 0; + cfg->lr_flip = 0; + break; +#if CONFIG_EXT_TX + case FLIPADST_DCT: + cfg->ud_flip = 1; + cfg->lr_flip = 0; + break; + case DCT_FLIPADST: + cfg->ud_flip = 0; + cfg->lr_flip = 1; + break; + case FLIPADST_FLIPADST: + cfg->ud_flip = 1; + cfg->lr_flip = 1; + break; + case ADST_FLIPADST: + cfg->ud_flip = 0; + cfg->lr_flip = 1; + break; + case FLIPADST_ADST: + cfg->ud_flip = 1; + cfg->lr_flip = 0; + break; +#endif // CONFIG_EXT_TX + default: + cfg->ud_flip = 0; + cfg->lr_flip = 0; + assert(0); + } +} + +#ifdef __cplusplus +extern "C" { +#endif +TXFM_2D_FLIP_CFG av1_get_fwd_txfm_cfg(int tx_type, int tx_size); +TXFM_2D_FLIP_CFG av1_get_fwd_txfm_64x64_cfg(int tx_type); +#ifdef __cplusplus +} +#endif // __cplusplus + +#endif // AV1_TXFM_H_ |