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Diffstat (limited to 'third_party/aom/av1/encoder/dct.c')
| -rw-r--r-- | third_party/aom/av1/encoder/dct.c | 2228 |
1 files changed, 2228 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/dct.c b/third_party/aom/av1/encoder/dct.c new file mode 100644 index 000000000..09e1b0563 --- /dev/null +++ b/third_party/aom/av1/encoder/dct.c @@ -0,0 +1,2228 @@ +/* + * 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. + */ + +#include <assert.h> +#include <math.h> + +#include "./aom_config.h" +#include "./aom_dsp_rtcd.h" +#include "./av1_rtcd.h" +#include "aom_dsp/fwd_txfm.h" +#include "aom_ports/mem.h" +#include "av1/common/blockd.h" +#include "av1/common/av1_fwd_txfm1d.h" +#include "av1/common/av1_fwd_txfm2d_cfg.h" +#include "av1/common/idct.h" + +static INLINE void range_check(const tran_low_t *input, const int size, + const int bit) { +#if 0 // CONFIG_COEFFICIENT_RANGE_CHECKING +// TODO(angiebird): the range_check is not used because the bit range +// in fdct# is not correct. Since we are going to merge in a new version +// of fdct# from nextgenv2, we won't fix the incorrect bit range now. + int i; + for (i = 0; i < size; ++i) { + assert(abs(input[i]) < (1 << bit)); + } +#else + (void)input; + (void)size; + (void)bit; +#endif +} + +static void fdct4(const tran_low_t *input, tran_low_t *output) { + tran_high_t temp; + tran_low_t step[4]; + + // stage 0 + range_check(input, 4, 14); + + // stage 1 + output[0] = input[0] + input[3]; + output[1] = input[1] + input[2]; + output[2] = input[1] - input[2]; + output[3] = input[0] - input[3]; + + range_check(output, 4, 15); + + // stage 2 + temp = output[0] * cospi_16_64 + output[1] * cospi_16_64; + step[0] = (tran_low_t)fdct_round_shift(temp); + temp = output[1] * -cospi_16_64 + output[0] * cospi_16_64; + step[1] = (tran_low_t)fdct_round_shift(temp); + temp = output[2] * cospi_24_64 + output[3] * cospi_8_64; + step[2] = (tran_low_t)fdct_round_shift(temp); + temp = output[3] * cospi_24_64 + output[2] * -cospi_8_64; + step[3] = (tran_low_t)fdct_round_shift(temp); + + range_check(step, 4, 16); + + // stage 3 + output[0] = step[0]; + output[1] = step[2]; + output[2] = step[1]; + output[3] = step[3]; + + range_check(output, 4, 16); +} + +static void fdct8(const tran_low_t *input, tran_low_t *output) { + tran_high_t temp; + tran_low_t step[8]; + + // stage 0 + range_check(input, 8, 13); + + // stage 1 + output[0] = input[0] + input[7]; + output[1] = input[1] + input[6]; + output[2] = input[2] + input[5]; + output[3] = input[3] + input[4]; + output[4] = input[3] - input[4]; + output[5] = input[2] - input[5]; + output[6] = input[1] - input[6]; + output[7] = input[0] - input[7]; + + range_check(output, 8, 14); + + // stage 2 + step[0] = output[0] + output[3]; + step[1] = output[1] + output[2]; + step[2] = output[1] - output[2]; + step[3] = output[0] - output[3]; + step[4] = output[4]; + temp = output[5] * -cospi_16_64 + output[6] * cospi_16_64; + step[5] = (tran_low_t)fdct_round_shift(temp); + temp = output[6] * cospi_16_64 + output[5] * cospi_16_64; + step[6] = (tran_low_t)fdct_round_shift(temp); + step[7] = output[7]; + + range_check(step, 8, 15); + + // stage 3 + temp = step[0] * cospi_16_64 + step[1] * cospi_16_64; + output[0] = (tran_low_t)fdct_round_shift(temp); + temp = step[1] * -cospi_16_64 + step[0] * cospi_16_64; + output[1] = (tran_low_t)fdct_round_shift(temp); + temp = step[2] * cospi_24_64 + step[3] * cospi_8_64; + output[2] = (tran_low_t)fdct_round_shift(temp); + temp = step[3] * cospi_24_64 + step[2] * -cospi_8_64; + output[3] = (tran_low_t)fdct_round_shift(temp); + output[4] = step[4] + step[5]; + output[5] = step[4] - step[5]; + output[6] = step[7] - step[6]; + output[7] = step[7] + step[6]; + + range_check(output, 8, 16); + + // stage 4 + step[0] = output[0]; + step[1] = output[1]; + step[2] = output[2]; + step[3] = output[3]; + temp = output[4] * cospi_28_64 + output[7] * cospi_4_64; + step[4] = (tran_low_t)fdct_round_shift(temp); + temp = output[5] * cospi_12_64 + output[6] * cospi_20_64; + step[5] = (tran_low_t)fdct_round_shift(temp); + temp = output[6] * cospi_12_64 + output[5] * -cospi_20_64; + step[6] = (tran_low_t)fdct_round_shift(temp); + temp = output[7] * cospi_28_64 + output[4] * -cospi_4_64; + step[7] = (tran_low_t)fdct_round_shift(temp); + + range_check(step, 8, 16); + + // stage 5 + output[0] = step[0]; + output[1] = step[4]; + output[2] = step[2]; + output[3] = step[6]; + output[4] = step[1]; + output[5] = step[5]; + output[6] = step[3]; + output[7] = step[7]; + + range_check(output, 8, 16); +} + +static void fdct16(const tran_low_t *input, tran_low_t *output) { + tran_high_t temp; + tran_low_t step[16]; + + // stage 0 + range_check(input, 16, 13); + + // stage 1 + output[0] = input[0] + input[15]; + output[1] = input[1] + input[14]; + output[2] = input[2] + input[13]; + output[3] = input[3] + input[12]; + output[4] = input[4] + input[11]; + output[5] = input[5] + input[10]; + output[6] = input[6] + input[9]; + output[7] = input[7] + input[8]; + output[8] = input[7] - input[8]; + output[9] = input[6] - input[9]; + output[10] = input[5] - input[10]; + output[11] = input[4] - input[11]; + output[12] = input[3] - input[12]; + output[13] = input[2] - input[13]; + output[14] = input[1] - input[14]; + output[15] = input[0] - input[15]; + + range_check(output, 16, 14); + + // stage 2 + step[0] = output[0] + output[7]; + step[1] = output[1] + output[6]; + step[2] = output[2] + output[5]; + step[3] = output[3] + output[4]; + step[4] = output[3] - output[4]; + step[5] = output[2] - output[5]; + step[6] = output[1] - output[6]; + step[7] = output[0] - output[7]; + step[8] = output[8]; + step[9] = output[9]; + temp = output[10] * -cospi_16_64 + output[13] * cospi_16_64; + step[10] = (tran_low_t)fdct_round_shift(temp); + temp = output[11] * -cospi_16_64 + output[12] * cospi_16_64; + step[11] = (tran_low_t)fdct_round_shift(temp); + temp = output[12] * cospi_16_64 + output[11] * cospi_16_64; + step[12] = (tran_low_t)fdct_round_shift(temp); + temp = output[13] * cospi_16_64 + output[10] * cospi_16_64; + step[13] = (tran_low_t)fdct_round_shift(temp); + step[14] = output[14]; + step[15] = output[15]; + + range_check(step, 16, 15); + + // stage 3 + output[0] = step[0] + step[3]; + output[1] = step[1] + step[2]; + output[2] = step[1] - step[2]; + output[3] = step[0] - step[3]; + output[4] = step[4]; + temp = step[5] * -cospi_16_64 + step[6] * cospi_16_64; + output[5] = (tran_low_t)fdct_round_shift(temp); + temp = step[6] * cospi_16_64 + step[5] * cospi_16_64; + output[6] = (tran_low_t)fdct_round_shift(temp); + output[7] = step[7]; + output[8] = step[8] + step[11]; + output[9] = step[9] + step[10]; + output[10] = step[9] - step[10]; + output[11] = step[8] - step[11]; + output[12] = step[15] - step[12]; + output[13] = step[14] - step[13]; + output[14] = step[14] + step[13]; + output[15] = step[15] + step[12]; + + range_check(output, 16, 16); + + // stage 4 + temp = output[0] * cospi_16_64 + output[1] * cospi_16_64; + step[0] = (tran_low_t)fdct_round_shift(temp); + temp = output[1] * -cospi_16_64 + output[0] * cospi_16_64; + step[1] = (tran_low_t)fdct_round_shift(temp); + temp = output[2] * cospi_24_64 + output[3] * cospi_8_64; + step[2] = (tran_low_t)fdct_round_shift(temp); + temp = output[3] * cospi_24_64 + output[2] * -cospi_8_64; + step[3] = (tran_low_t)fdct_round_shift(temp); + step[4] = output[4] + output[5]; + step[5] = output[4] - output[5]; + step[6] = output[7] - output[6]; + step[7] = output[7] + output[6]; + step[8] = output[8]; + temp = output[9] * -cospi_8_64 + output[14] * cospi_24_64; + step[9] = (tran_low_t)fdct_round_shift(temp); + temp = output[10] * -cospi_24_64 + output[13] * -cospi_8_64; + step[10] = (tran_low_t)fdct_round_shift(temp); + step[11] = output[11]; + step[12] = output[12]; + temp = output[13] * cospi_24_64 + output[10] * -cospi_8_64; + step[13] = (tran_low_t)fdct_round_shift(temp); + temp = output[14] * cospi_8_64 + output[9] * cospi_24_64; + step[14] = (tran_low_t)fdct_round_shift(temp); + step[15] = output[15]; + + range_check(step, 16, 16); + + // stage 5 + output[0] = step[0]; + output[1] = step[1]; + output[2] = step[2]; + output[3] = step[3]; + temp = step[4] * cospi_28_64 + step[7] * cospi_4_64; + output[4] = (tran_low_t)fdct_round_shift(temp); + temp = step[5] * cospi_12_64 + step[6] * cospi_20_64; + output[5] = (tran_low_t)fdct_round_shift(temp); + temp = step[6] * cospi_12_64 + step[5] * -cospi_20_64; + output[6] = (tran_low_t)fdct_round_shift(temp); + temp = step[7] * cospi_28_64 + step[4] * -cospi_4_64; + output[7] = (tran_low_t)fdct_round_shift(temp); + output[8] = step[8] + step[9]; + output[9] = step[8] - step[9]; + output[10] = step[11] - step[10]; + output[11] = step[11] + step[10]; + output[12] = step[12] + step[13]; + output[13] = step[12] - step[13]; + output[14] = step[15] - step[14]; + output[15] = step[15] + step[14]; + + range_check(output, 16, 16); + + // stage 6 + step[0] = output[0]; + step[1] = output[1]; + step[2] = output[2]; + step[3] = output[3]; + step[4] = output[4]; + step[5] = output[5]; + step[6] = output[6]; + step[7] = output[7]; + temp = output[8] * cospi_30_64 + output[15] * cospi_2_64; + step[8] = (tran_low_t)fdct_round_shift(temp); + temp = output[9] * cospi_14_64 + output[14] * cospi_18_64; + step[9] = (tran_low_t)fdct_round_shift(temp); + temp = output[10] * cospi_22_64 + output[13] * cospi_10_64; + step[10] = (tran_low_t)fdct_round_shift(temp); + temp = output[11] * cospi_6_64 + output[12] * cospi_26_64; + step[11] = (tran_low_t)fdct_round_shift(temp); + temp = output[12] * cospi_6_64 + output[11] * -cospi_26_64; + step[12] = (tran_low_t)fdct_round_shift(temp); + temp = output[13] * cospi_22_64 + output[10] * -cospi_10_64; + step[13] = (tran_low_t)fdct_round_shift(temp); + temp = output[14] * cospi_14_64 + output[9] * -cospi_18_64; + step[14] = (tran_low_t)fdct_round_shift(temp); + temp = output[15] * cospi_30_64 + output[8] * -cospi_2_64; + step[15] = (tran_low_t)fdct_round_shift(temp); + + range_check(step, 16, 16); + + // stage 7 + output[0] = step[0]; + output[1] = step[8]; + output[2] = step[4]; + output[3] = step[12]; + output[4] = step[2]; + output[5] = step[10]; + output[6] = step[6]; + output[7] = step[14]; + output[8] = step[1]; + output[9] = step[9]; + output[10] = step[5]; + output[11] = step[13]; + output[12] = step[3]; + output[13] = step[11]; + output[14] = step[7]; + output[15] = step[15]; + + range_check(output, 16, 16); +} + +static void fdct32(const tran_low_t *input, tran_low_t *output) { + tran_high_t temp; + tran_low_t step[32]; + + // stage 0 + range_check(input, 32, 14); + + // stage 1 + output[0] = input[0] + input[31]; + output[1] = input[1] + input[30]; + output[2] = input[2] + input[29]; + output[3] = input[3] + input[28]; + output[4] = input[4] + input[27]; + output[5] = input[5] + input[26]; + output[6] = input[6] + input[25]; + output[7] = input[7] + input[24]; + output[8] = input[8] + input[23]; + output[9] = input[9] + input[22]; + output[10] = input[10] + input[21]; + output[11] = input[11] + input[20]; + output[12] = input[12] + input[19]; + output[13] = input[13] + input[18]; + output[14] = input[14] + input[17]; + output[15] = input[15] + input[16]; + output[16] = input[15] - input[16]; + output[17] = input[14] - input[17]; + output[18] = input[13] - input[18]; + output[19] = input[12] - input[19]; + output[20] = input[11] - input[20]; + output[21] = input[10] - input[21]; + output[22] = input[9] - input[22]; + output[23] = input[8] - input[23]; + output[24] = input[7] - input[24]; + output[25] = input[6] - input[25]; + output[26] = input[5] - input[26]; + output[27] = input[4] - input[27]; + output[28] = input[3] - input[28]; + output[29] = input[2] - input[29]; + output[30] = input[1] - input[30]; + output[31] = input[0] - input[31]; + + range_check(output, 32, 15); + + // stage 2 + step[0] = output[0] + output[15]; + step[1] = output[1] + output[14]; + step[2] = output[2] + output[13]; + step[3] = output[3] + output[12]; + step[4] = output[4] + output[11]; + step[5] = output[5] + output[10]; + step[6] = output[6] + output[9]; + step[7] = output[7] + output[8]; + step[8] = output[7] - output[8]; + step[9] = output[6] - output[9]; + step[10] = output[5] - output[10]; + step[11] = output[4] - output[11]; + step[12] = output[3] - output[12]; + step[13] = output[2] - output[13]; + step[14] = output[1] - output[14]; + step[15] = output[0] - output[15]; + step[16] = output[16]; + step[17] = output[17]; + step[18] = output[18]; + step[19] = output[19]; + temp = output[20] * -cospi_16_64 + output[27] * cospi_16_64; + step[20] = (tran_low_t)fdct_round_shift(temp); + temp = output[21] * -cospi_16_64 + output[26] * cospi_16_64; + step[21] = (tran_low_t)fdct_round_shift(temp); + temp = output[22] * -cospi_16_64 + output[25] * cospi_16_64; + step[22] = (tran_low_t)fdct_round_shift(temp); + temp = output[23] * -cospi_16_64 + output[24] * cospi_16_64; + step[23] = (tran_low_t)fdct_round_shift(temp); + temp = output[24] * cospi_16_64 + output[23] * cospi_16_64; + step[24] = (tran_low_t)fdct_round_shift(temp); + temp = output[25] * cospi_16_64 + output[22] * cospi_16_64; + step[25] = (tran_low_t)fdct_round_shift(temp); + temp = output[26] * cospi_16_64 + output[21] * cospi_16_64; + step[26] = (tran_low_t)fdct_round_shift(temp); + temp = output[27] * cospi_16_64 + output[20] * cospi_16_64; + step[27] = (tran_low_t)fdct_round_shift(temp); + step[28] = output[28]; + step[29] = output[29]; + step[30] = output[30]; + step[31] = output[31]; + + range_check(step, 32, 16); + + // stage 3 + output[0] = step[0] + step[7]; + output[1] = step[1] + step[6]; + output[2] = step[2] + step[5]; + output[3] = step[3] + step[4]; + output[4] = step[3] - step[4]; + output[5] = step[2] - step[5]; + output[6] = step[1] - step[6]; + output[7] = step[0] - step[7]; + output[8] = step[8]; + output[9] = step[9]; + temp = step[10] * -cospi_16_64 + step[13] * cospi_16_64; + output[10] = (tran_low_t)fdct_round_shift(temp); + temp = step[11] * -cospi_16_64 + step[12] * cospi_16_64; + output[11] = (tran_low_t)fdct_round_shift(temp); + temp = step[12] * cospi_16_64 + step[11] * cospi_16_64; + output[12] = (tran_low_t)fdct_round_shift(temp); + temp = step[13] * cospi_16_64 + step[10] * cospi_16_64; + output[13] = (tran_low_t)fdct_round_shift(temp); + output[14] = step[14]; + output[15] = step[15]; + output[16] = step[16] + step[23]; + output[17] = step[17] + step[22]; + output[18] = step[18] + step[21]; + output[19] = step[19] + step[20]; + output[20] = step[19] - step[20]; + output[21] = step[18] - step[21]; + output[22] = step[17] - step[22]; + output[23] = step[16] - step[23]; + output[24] = step[31] - step[24]; + output[25] = step[30] - step[25]; + output[26] = step[29] - step[26]; + output[27] = step[28] - step[27]; + output[28] = step[28] + step[27]; + output[29] = step[29] + step[26]; + output[30] = step[30] + step[25]; + output[31] = step[31] + step[24]; + + range_check(output, 32, 17); + + // stage 4 + step[0] = output[0] + output[3]; + step[1] = output[1] + output[2]; + step[2] = output[1] - output[2]; + step[3] = output[0] - output[3]; + step[4] = output[4]; + temp = output[5] * -cospi_16_64 + output[6] * cospi_16_64; + step[5] = (tran_low_t)fdct_round_shift(temp); + temp = output[6] * cospi_16_64 + output[5] * cospi_16_64; + step[6] = (tran_low_t)fdct_round_shift(temp); + step[7] = output[7]; + step[8] = output[8] + output[11]; + step[9] = output[9] + output[10]; + step[10] = output[9] - output[10]; + step[11] = output[8] - output[11]; + step[12] = output[15] - output[12]; + step[13] = output[14] - output[13]; + step[14] = output[14] + output[13]; + step[15] = output[15] + output[12]; + step[16] = output[16]; + step[17] = output[17]; + temp = output[18] * -cospi_8_64 + output[29] * cospi_24_64; + step[18] = (tran_low_t)fdct_round_shift(temp); + temp = output[19] * -cospi_8_64 + output[28] * cospi_24_64; + step[19] = (tran_low_t)fdct_round_shift(temp); + temp = output[20] * -cospi_24_64 + output[27] * -cospi_8_64; + step[20] = (tran_low_t)fdct_round_shift(temp); + temp = output[21] * -cospi_24_64 + output[26] * -cospi_8_64; + step[21] = (tran_low_t)fdct_round_shift(temp); + step[22] = output[22]; + step[23] = output[23]; + step[24] = output[24]; + step[25] = output[25]; + temp = output[26] * cospi_24_64 + output[21] * -cospi_8_64; + step[26] = (tran_low_t)fdct_round_shift(temp); + temp = output[27] * cospi_24_64 + output[20] * -cospi_8_64; + step[27] = (tran_low_t)fdct_round_shift(temp); + temp = output[28] * cospi_8_64 + output[19] * cospi_24_64; + step[28] = (tran_low_t)fdct_round_shift(temp); + temp = output[29] * cospi_8_64 + output[18] * cospi_24_64; + step[29] = (tran_low_t)fdct_round_shift(temp); + step[30] = output[30]; + step[31] = output[31]; + + range_check(step, 32, 18); + + // stage 5 + temp = step[0] * cospi_16_64 + step[1] * cospi_16_64; + output[0] = (tran_low_t)fdct_round_shift(temp); + temp = step[1] * -cospi_16_64 + step[0] * cospi_16_64; + output[1] = (tran_low_t)fdct_round_shift(temp); + temp = step[2] * cospi_24_64 + step[3] * cospi_8_64; + output[2] = (tran_low_t)fdct_round_shift(temp); + temp = step[3] * cospi_24_64 + step[2] * -cospi_8_64; + output[3] = (tran_low_t)fdct_round_shift(temp); + output[4] = step[4] + step[5]; + output[5] = step[4] - step[5]; + output[6] = step[7] - step[6]; + output[7] = step[7] + step[6]; + output[8] = step[8]; + temp = step[9] * -cospi_8_64 + step[14] * cospi_24_64; + output[9] = (tran_low_t)fdct_round_shift(temp); + temp = step[10] * -cospi_24_64 + step[13] * -cospi_8_64; + output[10] = (tran_low_t)fdct_round_shift(temp); + output[11] = step[11]; + output[12] = step[12]; + temp = step[13] * cospi_24_64 + step[10] * -cospi_8_64; + output[13] = (tran_low_t)fdct_round_shift(temp); + temp = step[14] * cospi_8_64 + step[9] * cospi_24_64; + output[14] = (tran_low_t)fdct_round_shift(temp); + output[15] = step[15]; + output[16] = step[16] + step[19]; + output[17] = step[17] + step[18]; + output[18] = step[17] - step[18]; + output[19] = step[16] - step[19]; + output[20] = step[23] - step[20]; + output[21] = step[22] - step[21]; + output[22] = step[22] + step[21]; + output[23] = step[23] + step[20]; + output[24] = step[24] + step[27]; + output[25] = step[25] + step[26]; + output[26] = step[25] - step[26]; + output[27] = step[24] - step[27]; + output[28] = step[31] - step[28]; + output[29] = step[30] - step[29]; + output[30] = step[30] + step[29]; + output[31] = step[31] + step[28]; + + range_check(output, 32, 18); + + // stage 6 + step[0] = output[0]; + step[1] = output[1]; + step[2] = output[2]; + step[3] = output[3]; + temp = output[4] * cospi_28_64 + output[7] * cospi_4_64; + step[4] = (tran_low_t)fdct_round_shift(temp); + temp = output[5] * cospi_12_64 + output[6] * cospi_20_64; + step[5] = (tran_low_t)fdct_round_shift(temp); + temp = output[6] * cospi_12_64 + output[5] * -cospi_20_64; + step[6] = (tran_low_t)fdct_round_shift(temp); + temp = output[7] * cospi_28_64 + output[4] * -cospi_4_64; + step[7] = (tran_low_t)fdct_round_shift(temp); + step[8] = output[8] + output[9]; + step[9] = output[8] - output[9]; + step[10] = output[11] - output[10]; + step[11] = output[11] + output[10]; + step[12] = output[12] + output[13]; + step[13] = output[12] - output[13]; + step[14] = output[15] - output[14]; + step[15] = output[15] + output[14]; + step[16] = output[16]; + temp = output[17] * -cospi_4_64 + output[30] * cospi_28_64; + step[17] = (tran_low_t)fdct_round_shift(temp); + temp = output[18] * -cospi_28_64 + output[29] * -cospi_4_64; + step[18] = (tran_low_t)fdct_round_shift(temp); + step[19] = output[19]; + step[20] = output[20]; + temp = output[21] * -cospi_20_64 + output[26] * cospi_12_64; + step[21] = (tran_low_t)fdct_round_shift(temp); + temp = output[22] * -cospi_12_64 + output[25] * -cospi_20_64; + step[22] = (tran_low_t)fdct_round_shift(temp); + step[23] = output[23]; + step[24] = output[24]; + temp = output[25] * cospi_12_64 + output[22] * -cospi_20_64; + step[25] = (tran_low_t)fdct_round_shift(temp); + temp = output[26] * cospi_20_64 + output[21] * cospi_12_64; + step[26] = (tran_low_t)fdct_round_shift(temp); + step[27] = output[27]; + step[28] = output[28]; + temp = output[29] * cospi_28_64 + output[18] * -cospi_4_64; + step[29] = (tran_low_t)fdct_round_shift(temp); + temp = output[30] * cospi_4_64 + output[17] * cospi_28_64; + step[30] = (tran_low_t)fdct_round_shift(temp); + step[31] = output[31]; + + range_check(step, 32, 18); + + // stage 7 + output[0] = step[0]; + output[1] = step[1]; + output[2] = step[2]; + output[3] = step[3]; + output[4] = step[4]; + output[5] = step[5]; + output[6] = step[6]; + output[7] = step[7]; + temp = step[8] * cospi_30_64 + step[15] * cospi_2_64; + output[8] = (tran_low_t)fdct_round_shift(temp); + temp = step[9] * cospi_14_64 + step[14] * cospi_18_64; + output[9] = (tran_low_t)fdct_round_shift(temp); + temp = step[10] * cospi_22_64 + step[13] * cospi_10_64; + output[10] = (tran_low_t)fdct_round_shift(temp); + temp = step[11] * cospi_6_64 + step[12] * cospi_26_64; + output[11] = (tran_low_t)fdct_round_shift(temp); + temp = step[12] * cospi_6_64 + step[11] * -cospi_26_64; + output[12] = (tran_low_t)fdct_round_shift(temp); + temp = step[13] * cospi_22_64 + step[10] * -cospi_10_64; + output[13] = (tran_low_t)fdct_round_shift(temp); + temp = step[14] * cospi_14_64 + step[9] * -cospi_18_64; + output[14] = (tran_low_t)fdct_round_shift(temp); + temp = step[15] * cospi_30_64 + step[8] * -cospi_2_64; + output[15] = (tran_low_t)fdct_round_shift(temp); + output[16] = step[16] + step[17]; + output[17] = step[16] - step[17]; + output[18] = step[19] - step[18]; + output[19] = step[19] + step[18]; + output[20] = step[20] + step[21]; + output[21] = step[20] - step[21]; + output[22] = step[23] - step[22]; + output[23] = step[23] + step[22]; + output[24] = step[24] + step[25]; + output[25] = step[24] - step[25]; + output[26] = step[27] - step[26]; + output[27] = step[27] + step[26]; + output[28] = step[28] + step[29]; + output[29] = step[28] - step[29]; + output[30] = step[31] - step[30]; + output[31] = step[31] + step[30]; + + range_check(output, 32, 18); + + // stage 8 + step[0] = output[0]; + step[1] = output[1]; + step[2] = output[2]; + step[3] = output[3]; + step[4] = output[4]; + step[5] = output[5]; + step[6] = output[6]; + step[7] = output[7]; + step[8] = output[8]; + step[9] = output[9]; + step[10] = output[10]; + step[11] = output[11]; + step[12] = output[12]; + step[13] = output[13]; + step[14] = output[14]; + step[15] = output[15]; + temp = output[16] * cospi_31_64 + output[31] * cospi_1_64; + step[16] = (tran_low_t)fdct_round_shift(temp); + temp = output[17] * cospi_15_64 + output[30] * cospi_17_64; + step[17] = (tran_low_t)fdct_round_shift(temp); + temp = output[18] * cospi_23_64 + output[29] * cospi_9_64; + step[18] = (tran_low_t)fdct_round_shift(temp); + temp = output[19] * cospi_7_64 + output[28] * cospi_25_64; + step[19] = (tran_low_t)fdct_round_shift(temp); + temp = output[20] * cospi_27_64 + output[27] * cospi_5_64; + step[20] = (tran_low_t)fdct_round_shift(temp); + temp = output[21] * cospi_11_64 + output[26] * cospi_21_64; + step[21] = (tran_low_t)fdct_round_shift(temp); + temp = output[22] * cospi_19_64 + output[25] * cospi_13_64; + step[22] = (tran_low_t)fdct_round_shift(temp); + temp = output[23] * cospi_3_64 + output[24] * cospi_29_64; + step[23] = (tran_low_t)fdct_round_shift(temp); + temp = output[24] * cospi_3_64 + output[23] * -cospi_29_64; + step[24] = (tran_low_t)fdct_round_shift(temp); + temp = output[25] * cospi_19_64 + output[22] * -cospi_13_64; + step[25] = (tran_low_t)fdct_round_shift(temp); + temp = output[26] * cospi_11_64 + output[21] * -cospi_21_64; + step[26] = (tran_low_t)fdct_round_shift(temp); + temp = output[27] * cospi_27_64 + output[20] * -cospi_5_64; + step[27] = (tran_low_t)fdct_round_shift(temp); + temp = output[28] * cospi_7_64 + output[19] * -cospi_25_64; + step[28] = (tran_low_t)fdct_round_shift(temp); + temp = output[29] * cospi_23_64 + output[18] * -cospi_9_64; + step[29] = (tran_low_t)fdct_round_shift(temp); + temp = output[30] * cospi_15_64 + output[17] * -cospi_17_64; + step[30] = (tran_low_t)fdct_round_shift(temp); + temp = output[31] * cospi_31_64 + output[16] * -cospi_1_64; + step[31] = (tran_low_t)fdct_round_shift(temp); + + range_check(step, 32, 18); + + // stage 9 + output[0] = step[0]; + output[1] = step[16]; + output[2] = step[8]; + output[3] = step[24]; + output[4] = step[4]; + output[5] = step[20]; + output[6] = step[12]; + output[7] = step[28]; + output[8] = step[2]; + output[9] = step[18]; + output[10] = step[10]; + output[11] = step[26]; + output[12] = step[6]; + output[13] = step[22]; + output[14] = step[14]; + output[15] = step[30]; + output[16] = step[1]; + output[17] = step[17]; + output[18] = step[9]; + output[19] = step[25]; + output[20] = step[5]; + output[21] = step[21]; + output[22] = step[13]; + output[23] = step[29]; + output[24] = step[3]; + output[25] = step[19]; + output[26] = step[11]; + output[27] = step[27]; + output[28] = step[7]; + output[29] = step[23]; + output[30] = step[15]; + output[31] = step[31]; + + range_check(output, 32, 18); +} + +#ifndef AV1_DCT_GTEST + +static void fadst4(const tran_low_t *input, tran_low_t *output) { + tran_high_t x0, x1, x2, x3; + tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; + + x0 = input[0]; + x1 = input[1]; + x2 = input[2]; + x3 = input[3]; + + if (!(x0 | x1 | x2 | x3)) { + output[0] = output[1] = output[2] = output[3] = 0; + return; + } + + s0 = sinpi_1_9 * x0; + s1 = sinpi_4_9 * x0; + s2 = sinpi_2_9 * x1; + s3 = sinpi_1_9 * x1; + s4 = sinpi_3_9 * x2; + s5 = sinpi_4_9 * x3; + s6 = sinpi_2_9 * x3; + s7 = x0 + x1 - x3; + + x0 = s0 + s2 + s5; + x1 = sinpi_3_9 * s7; + x2 = s1 - s3 + s6; + x3 = s4; + + s0 = x0 + x3; + s1 = x1; + s2 = x2 - x3; + s3 = x2 - x0 + x3; + + // 1-D transform scaling factor is sqrt(2). + output[0] = (tran_low_t)fdct_round_shift(s0); + output[1] = (tran_low_t)fdct_round_shift(s1); + output[2] = (tran_low_t)fdct_round_shift(s2); + output[3] = (tran_low_t)fdct_round_shift(s3); +} + +static void fadst8(const tran_low_t *input, tran_low_t *output) { + tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; + + tran_high_t x0 = input[7]; + tran_high_t x1 = input[0]; + tran_high_t x2 = input[5]; + tran_high_t x3 = input[2]; + tran_high_t x4 = input[3]; + tran_high_t x5 = input[4]; + tran_high_t x6 = input[1]; + tran_high_t x7 = input[6]; + + // stage 1 + s0 = cospi_2_64 * x0 + cospi_30_64 * x1; + s1 = cospi_30_64 * x0 - cospi_2_64 * x1; + s2 = cospi_10_64 * x2 + cospi_22_64 * x3; + s3 = cospi_22_64 * x2 - cospi_10_64 * x3; + s4 = cospi_18_64 * x4 + cospi_14_64 * x5; + s5 = cospi_14_64 * x4 - cospi_18_64 * x5; + s6 = cospi_26_64 * x6 + cospi_6_64 * x7; + s7 = cospi_6_64 * x6 - cospi_26_64 * x7; + + x0 = s0 + s4; + x1 = s1 + s5; + x2 = s2 + s6; + x3 = s3 + s7; + x4 = fdct_round_shift(s0 - s4); + x5 = fdct_round_shift(s1 - s5); + x6 = fdct_round_shift(s2 - s6); + x7 = fdct_round_shift(s3 - s7); + + // stage 2 + s0 = x0; + s1 = x1; + s2 = x2; + s3 = x3; + s4 = cospi_8_64 * x4 + cospi_24_64 * x5; + s5 = cospi_24_64 * x4 - cospi_8_64 * x5; + s6 = -cospi_24_64 * x6 + cospi_8_64 * x7; + s7 = cospi_8_64 * x6 + cospi_24_64 * x7; + + x0 = fdct_round_shift(s0 + s2); + x1 = fdct_round_shift(s1 + s3); + x2 = fdct_round_shift(s0 - s2); + x3 = fdct_round_shift(s1 - s3); + x4 = fdct_round_shift(s4 + s6); + x5 = fdct_round_shift(s5 + s7); + x6 = fdct_round_shift(s4 - s6); + x7 = fdct_round_shift(s5 - s7); + + // stage 3 + s2 = cospi_16_64 * (x2 + x3); + s3 = cospi_16_64 * (x2 - x3); + s6 = cospi_16_64 * (x6 + x7); + s7 = cospi_16_64 * (x6 - x7); + + x2 = fdct_round_shift(s2); + x3 = fdct_round_shift(s3); + x6 = fdct_round_shift(s6); + x7 = fdct_round_shift(s7); + + output[0] = (tran_low_t)x0; + output[1] = (tran_low_t)-x4; + output[2] = (tran_low_t)x6; + output[3] = (tran_low_t)-x2; + output[4] = (tran_low_t)x3; + output[5] = (tran_low_t)-x7; + output[6] = (tran_low_t)x5; + output[7] = (tran_low_t)-x1; +} + +static void fadst16(const tran_low_t *input, tran_low_t *output) { + tran_high_t s0, s1, s2, s3, s4, s5, s6, s7, s8; + tran_high_t s9, s10, s11, s12, s13, s14, s15; + + tran_high_t x0 = input[15]; + tran_high_t x1 = input[0]; + tran_high_t x2 = input[13]; + tran_high_t x3 = input[2]; + tran_high_t x4 = input[11]; + tran_high_t x5 = input[4]; + tran_high_t x6 = input[9]; + tran_high_t x7 = input[6]; + tran_high_t x8 = input[7]; + tran_high_t x9 = input[8]; + tran_high_t x10 = input[5]; + tran_high_t x11 = input[10]; + tran_high_t x12 = input[3]; + tran_high_t x13 = input[12]; + tran_high_t x14 = input[1]; + tran_high_t x15 = input[14]; + + // stage 1 + s0 = x0 * cospi_1_64 + x1 * cospi_31_64; + s1 = x0 * cospi_31_64 - x1 * cospi_1_64; + s2 = x2 * cospi_5_64 + x3 * cospi_27_64; + s3 = x2 * cospi_27_64 - x3 * cospi_5_64; + s4 = x4 * cospi_9_64 + x5 * cospi_23_64; + s5 = x4 * cospi_23_64 - x5 * cospi_9_64; + s6 = x6 * cospi_13_64 + x7 * cospi_19_64; + s7 = x6 * cospi_19_64 - x7 * cospi_13_64; + s8 = x8 * cospi_17_64 + x9 * cospi_15_64; + s9 = x8 * cospi_15_64 - x9 * cospi_17_64; + s10 = x10 * cospi_21_64 + x11 * cospi_11_64; + s11 = x10 * cospi_11_64 - x11 * cospi_21_64; + s12 = x12 * cospi_25_64 + x13 * cospi_7_64; + s13 = x12 * cospi_7_64 - x13 * cospi_25_64; + s14 = x14 * cospi_29_64 + x15 * cospi_3_64; + s15 = x14 * cospi_3_64 - x15 * cospi_29_64; + + x0 = s0 + s8; + x1 = s1 + s9; + x2 = s2 + s10; + x3 = s3 + s11; + x4 = s4 + s12; + x5 = s5 + s13; + x6 = s6 + s14; + x7 = s7 + s15; + + x8 = fdct_round_shift(s0 - s8); + x9 = fdct_round_shift(s1 - s9); + x10 = fdct_round_shift(s2 - s10); + x11 = fdct_round_shift(s3 - s11); + x12 = fdct_round_shift(s4 - s12); + x13 = fdct_round_shift(s5 - s13); + x14 = fdct_round_shift(s6 - s14); + x15 = fdct_round_shift(s7 - s15); + + // stage 2 + s0 = x0; + s1 = x1; + s2 = x2; + s3 = x3; + s4 = x4; + s5 = x5; + s6 = x6; + s7 = x7; + s8 = x8 * cospi_4_64 + x9 * cospi_28_64; + s9 = x8 * cospi_28_64 - x9 * cospi_4_64; + s10 = x10 * cospi_20_64 + x11 * cospi_12_64; + s11 = x10 * cospi_12_64 - x11 * cospi_20_64; + s12 = -x12 * cospi_28_64 + x13 * cospi_4_64; + s13 = x12 * cospi_4_64 + x13 * cospi_28_64; + s14 = -x14 * cospi_12_64 + x15 * cospi_20_64; + s15 = x14 * cospi_20_64 + x15 * cospi_12_64; + + x0 = s0 + s4; + x1 = s1 + s5; + x2 = s2 + s6; + x3 = s3 + s7; + x4 = fdct_round_shift(s0 - s4); + x5 = fdct_round_shift(s1 - s5); + x6 = fdct_round_shift(s2 - s6); + x7 = fdct_round_shift(s3 - s7); + + x8 = s8 + s12; + x9 = s9 + s13; + x10 = s10 + s14; + x11 = s11 + s15; + x12 = fdct_round_shift(s8 - s12); + x13 = fdct_round_shift(s9 - s13); + x14 = fdct_round_shift(s10 - s14); + x15 = fdct_round_shift(s11 - s15); + + // stage 3 + s0 = x0; + s1 = x1; + s2 = x2; + s3 = x3; + s4 = x4 * cospi_8_64 + x5 * cospi_24_64; + s5 = x4 * cospi_24_64 - x5 * cospi_8_64; + s6 = -x6 * cospi_24_64 + x7 * cospi_8_64; + s7 = x6 * cospi_8_64 + x7 * cospi_24_64; + s8 = x8; + s9 = x9; + s10 = x10; + s11 = x11; + s12 = x12 * cospi_8_64 + x13 * cospi_24_64; + s13 = x12 * cospi_24_64 - x13 * cospi_8_64; + s14 = -x14 * cospi_24_64 + x15 * cospi_8_64; + s15 = x14 * cospi_8_64 + x15 * cospi_24_64; + + x0 = fdct_round_shift(s0 + s2); + x1 = fdct_round_shift(s1 + s3); + x2 = fdct_round_shift(s0 - s2); + x3 = fdct_round_shift(s1 - s3); + + x4 = fdct_round_shift(s4 + s6); + x5 = fdct_round_shift(s5 + s7); + x6 = fdct_round_shift(s4 - s6); + x7 = fdct_round_shift(s5 - s7); + + x8 = fdct_round_shift(s8 + s10); + x9 = fdct_round_shift(s9 + s11); + x10 = fdct_round_shift(s8 - s10); + x11 = fdct_round_shift(s9 - s11); + + x12 = fdct_round_shift(s12 + s14); + x13 = fdct_round_shift(s13 + s15); + x14 = fdct_round_shift(s12 - s14); + x15 = fdct_round_shift(s13 - s15); + + // stage 4 + s2 = (-cospi_16_64) * (x2 + x3); + s3 = cospi_16_64 * (x2 - x3); + s6 = cospi_16_64 * (x6 + x7); + s7 = cospi_16_64 * (-x6 + x7); + s10 = cospi_16_64 * (x10 + x11); + s11 = cospi_16_64 * (-x10 + x11); + s14 = (-cospi_16_64) * (x14 + x15); + s15 = cospi_16_64 * (x14 - x15); + + x2 = fdct_round_shift(s2); + x3 = fdct_round_shift(s3); + x6 = fdct_round_shift(s6); + x7 = fdct_round_shift(s7); + x10 = fdct_round_shift(s10); + x11 = fdct_round_shift(s11); + x14 = fdct_round_shift(s14); + x15 = fdct_round_shift(s15); + + output[0] = (tran_low_t)x0; + output[1] = (tran_low_t)-x8; + output[2] = (tran_low_t)x12; + output[3] = (tran_low_t)-x4; + output[4] = (tran_low_t)x6; + output[5] = (tran_low_t)x14; + output[6] = (tran_low_t)x10; + output[7] = (tran_low_t)x2; + output[8] = (tran_low_t)x3; + output[9] = (tran_low_t)x11; + output[10] = (tran_low_t)x15; + output[11] = (tran_low_t)x7; + output[12] = (tran_low_t)x5; + output[13] = (tran_low_t)-x13; + output[14] = (tran_low_t)x9; + output[15] = (tran_low_t)-x1; +} + +// For use in lieu of ADST +static void fhalfright32(const tran_low_t *input, tran_low_t *output) { + int i; + tran_low_t inputhalf[16]; + for (i = 0; i < 16; ++i) { + output[16 + i] = input[i] * 4; + } + // Multiply input by sqrt(2) + for (i = 0; i < 16; ++i) { + inputhalf[i] = (tran_low_t)fdct_round_shift(input[i + 16] * Sqrt2); + } + fdct16(inputhalf, output); + // Note overall scaling factor is 4 times orthogonal +} + +#if CONFIG_EXT_TX +static void fidtx4(const tran_low_t *input, tran_low_t *output) { + int i; + for (i = 0; i < 4; ++i) + output[i] = (tran_low_t)fdct_round_shift(input[i] * Sqrt2); +} + +static void fidtx8(const tran_low_t *input, tran_low_t *output) { + int i; + for (i = 0; i < 8; ++i) output[i] = input[i] * 2; +} + +static void fidtx16(const tran_low_t *input, tran_low_t *output) { + int i; + for (i = 0; i < 16; ++i) + output[i] = (tran_low_t)fdct_round_shift(input[i] * 2 * Sqrt2); +} + +static void fidtx32(const tran_low_t *input, tran_low_t *output) { + int i; + for (i = 0; i < 32; ++i) output[i] = input[i] * 4; +} + +static void copy_block(const int16_t *src, int src_stride, int l, int w, + int16_t *dest, int dest_stride) { + int i; + for (i = 0; i < l; ++i) { + memcpy(dest + dest_stride * i, src + src_stride * i, w * sizeof(int16_t)); + } +} + +static void fliplr(int16_t *dest, int stride, int l, int w) { + int i, j; + for (i = 0; i < l; ++i) { + for (j = 0; j < w / 2; ++j) { + const int16_t tmp = dest[i * stride + j]; + dest[i * stride + j] = dest[i * stride + w - 1 - j]; + dest[i * stride + w - 1 - j] = tmp; + } + } +} + +static void flipud(int16_t *dest, int stride, int l, int w) { + int i, j; + for (j = 0; j < w; ++j) { + for (i = 0; i < l / 2; ++i) { + const int16_t tmp = dest[i * stride + j]; + dest[i * stride + j] = dest[(l - 1 - i) * stride + j]; + dest[(l - 1 - i) * stride + j] = tmp; + } + } +} + +static void fliplrud(int16_t *dest, int stride, int l, int w) { + int i, j; + for (i = 0; i < l / 2; ++i) { + for (j = 0; j < w; ++j) { + const int16_t tmp = dest[i * stride + j]; + dest[i * stride + j] = dest[(l - 1 - i) * stride + w - 1 - j]; + dest[(l - 1 - i) * stride + w - 1 - j] = tmp; + } + } +} + +static void copy_fliplr(const int16_t *src, int src_stride, int l, int w, + int16_t *dest, int dest_stride) { + copy_block(src, src_stride, l, w, dest, dest_stride); + fliplr(dest, dest_stride, l, w); +} + +static void copy_flipud(const int16_t *src, int src_stride, int l, int w, + int16_t *dest, int dest_stride) { + copy_block(src, src_stride, l, w, dest, dest_stride); + flipud(dest, dest_stride, l, w); +} + +static void copy_fliplrud(const int16_t *src, int src_stride, int l, int w, + int16_t *dest, int dest_stride) { + copy_block(src, src_stride, l, w, dest, dest_stride); + fliplrud(dest, dest_stride, l, w); +} + +static void maybe_flip_input(const int16_t **src, int *src_stride, int l, int w, + int16_t *buff, int tx_type) { + switch (tx_type) { + case DCT_DCT: + case ADST_DCT: + case DCT_ADST: + case ADST_ADST: + case IDTX: + case V_DCT: + case H_DCT: + case V_ADST: + case H_ADST: break; + case FLIPADST_DCT: + case FLIPADST_ADST: + case V_FLIPADST: + copy_flipud(*src, *src_stride, l, w, buff, w); + *src = buff; + *src_stride = w; + break; + case DCT_FLIPADST: + case ADST_FLIPADST: + case H_FLIPADST: + copy_fliplr(*src, *src_stride, l, w, buff, w); + *src = buff; + *src_stride = w; + break; + case FLIPADST_FLIPADST: + copy_fliplrud(*src, *src_stride, l, w, buff, w); + *src = buff; + *src_stride = w; + break; + default: assert(0); break; + } +} +#endif // CONFIG_EXT_TX + +void av1_fht4x4_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + if (tx_type == DCT_DCT) { + aom_fdct4x4_c(input, output, stride); + } else { + static const transform_2d FHT[] = { + { fdct4, fdct4 }, // DCT_DCT + { fadst4, fdct4 }, // ADST_DCT + { fdct4, fadst4 }, // DCT_ADST + { fadst4, fadst4 }, // ADST_ADST +#if CONFIG_EXT_TX + { fadst4, fdct4 }, // FLIPADST_DCT + { fdct4, fadst4 }, // DCT_FLIPADST + { fadst4, fadst4 }, // FLIPADST_FLIPADST + { fadst4, fadst4 }, // ADST_FLIPADST + { fadst4, fadst4 }, // FLIPADST_ADST + { fidtx4, fidtx4 }, // IDTX + { fdct4, fidtx4 }, // V_DCT + { fidtx4, fdct4 }, // H_DCT + { fadst4, fidtx4 }, // V_ADST + { fidtx4, fadst4 }, // H_ADST + { fadst4, fidtx4 }, // V_FLIPADST + { fidtx4, fadst4 }, // H_FLIPADST +#endif // CONFIG_EXT_TX + }; + const transform_2d ht = FHT[tx_type]; + tran_low_t out[4 * 4]; + int i, j; + tran_low_t temp_in[4], temp_out[4]; + +#if CONFIG_EXT_TX + int16_t flipped_input[4 * 4]; + maybe_flip_input(&input, &stride, 4, 4, flipped_input, tx_type); +#endif + + // Columns + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) temp_in[j] = input[j * stride + i] * 16; + if (i == 0 && temp_in[0]) temp_in[0] += 1; + ht.cols(temp_in, temp_out); + for (j = 0; j < 4; ++j) out[j * 4 + i] = temp_out[j]; + } + + // Rows + for (i = 0; i < 4; ++i) { + for (j = 0; j < 4; ++j) temp_in[j] = out[j + i * 4]; + ht.rows(temp_in, temp_out); + for (j = 0; j < 4; ++j) output[j + i * 4] = (temp_out[j] + 1) >> 2; + } + } +} + +void av1_fht4x8_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct8, fdct4 }, // DCT_DCT + { fadst8, fdct4 }, // ADST_DCT + { fdct8, fadst4 }, // DCT_ADST + { fadst8, fadst4 }, // ADST_ADST +#if CONFIG_EXT_TX + { fadst8, fdct4 }, // FLIPADST_DCT + { fdct8, fadst4 }, // DCT_FLIPADST + { fadst8, fadst4 }, // FLIPADST_FLIPADST + { fadst8, fadst4 }, // ADST_FLIPADST + { fadst8, fadst4 }, // FLIPADST_ADST + { fidtx8, fidtx4 }, // IDTX + { fdct8, fidtx4 }, // V_DCT + { fidtx8, fdct4 }, // H_DCT + { fadst8, fidtx4 }, // V_ADST + { fidtx8, fadst4 }, // H_ADST + { fadst8, fidtx4 }, // V_FLIPADST + { fidtx8, fadst4 }, // H_FLIPADST +#endif + }; + const transform_2d ht = FHT[tx_type]; + const int n = 4; + const int n2 = 8; + tran_low_t out[8 * 4]; + tran_low_t temp_in[8], temp_out[8]; + int i, j; +#if CONFIG_EXT_TX + int16_t flipped_input[8 * 4]; + maybe_flip_input(&input, &stride, n2, n, flipped_input, tx_type); +#endif + + // Rows + for (i = 0; i < n2; ++i) { + for (j = 0; j < n; ++j) + temp_in[j] = + (tran_low_t)fdct_round_shift(input[i * stride + j] * 4 * Sqrt2); + ht.rows(temp_in, temp_out); + for (j = 0; j < n; ++j) out[j * n2 + i] = temp_out[j]; + } + + // Columns + for (i = 0; i < n; ++i) { + for (j = 0; j < n2; ++j) temp_in[j] = out[j + i * n2]; + ht.cols(temp_in, temp_out); + for (j = 0; j < n2; ++j) + output[i + j * n] = (temp_out[j] + (temp_out[j] < 0)) >> 1; + } + // Note: overall scale factor of transform is 8 times unitary +} + +void av1_fht8x4_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct4, fdct8 }, // DCT_DCT + { fadst4, fdct8 }, // ADST_DCT + { fdct4, fadst8 }, // DCT_ADST + { fadst4, fadst8 }, // ADST_ADST +#if CONFIG_EXT_TX + { fadst4, fdct8 }, // FLIPADST_DCT + { fdct4, fadst8 }, // DCT_FLIPADST + { fadst4, fadst8 }, // FLIPADST_FLIPADST + { fadst4, fadst8 }, // ADST_FLIPADST + { fadst4, fadst8 }, // FLIPADST_ADST + { fidtx4, fidtx8 }, // IDTX + { fdct4, fidtx8 }, // V_DCT + { fidtx4, fdct8 }, // H_DCT + { fadst4, fidtx8 }, // V_ADST + { fidtx4, fadst8 }, // H_ADST + { fadst4, fidtx8 }, // V_FLIPADST + { fidtx4, fadst8 }, // H_FLIPADST +#endif + }; + const transform_2d ht = FHT[tx_type]; + const int n = 4; + const int n2 = 8; + tran_low_t out[8 * 4]; + tran_low_t temp_in[8], temp_out[8]; + int i, j; +#if CONFIG_EXT_TX + int16_t flipped_input[8 * 4]; + maybe_flip_input(&input, &stride, n, n2, flipped_input, tx_type); +#endif + + // Columns + for (i = 0; i < n2; ++i) { + for (j = 0; j < n; ++j) + temp_in[j] = + (tran_low_t)fdct_round_shift(input[j * stride + i] * 4 * Sqrt2); + ht.cols(temp_in, temp_out); + for (j = 0; j < n; ++j) out[j * n2 + i] = temp_out[j]; + } + + // Rows + for (i = 0; i < n; ++i) { + for (j = 0; j < n2; ++j) temp_in[j] = out[j + i * n2]; + ht.rows(temp_in, temp_out); + for (j = 0; j < n2; ++j) + output[j + i * n2] = (temp_out[j] + (temp_out[j] < 0)) >> 1; + } + // Note: overall scale factor of transform is 8 times unitary +} + +void av1_fht4x16_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct16, fdct4 }, // DCT_DCT + { fadst16, fdct4 }, // ADST_DCT + { fdct16, fadst4 }, // DCT_ADST + { fadst16, fadst4 }, // ADST_ADST +#if CONFIG_EXT_TX + { fadst16, fdct4 }, // FLIPADST_DCT + { fdct16, fadst4 }, // DCT_FLIPADST + { fadst16, fadst4 }, // FLIPADST_FLIPADST + { fadst16, fadst4 }, // ADST_FLIPADST + { fadst16, fadst4 }, // FLIPADST_ADST + { fidtx16, fidtx4 }, // IDTX + { fdct16, fidtx4 }, // V_DCT + { fidtx16, fdct4 }, // H_DCT + { fadst16, fidtx4 }, // V_ADST + { fidtx16, fadst4 }, // H_ADST + { fadst16, fidtx4 }, // V_FLIPADST + { fidtx16, fadst4 }, // H_FLIPADST +#endif + }; + const transform_2d ht = FHT[tx_type]; + const int n = 4; + const int n4 = 16; + tran_low_t out[16 * 4]; + tran_low_t temp_in[16], temp_out[16]; + int i, j; +#if CONFIG_EXT_TX + int16_t flipped_input[16 * 4]; + maybe_flip_input(&input, &stride, n4, n, flipped_input, tx_type); +#endif + + // Rows + for (i = 0; i < n4; ++i) { + for (j = 0; j < n; ++j) temp_in[j] = input[i * stride + j] * 4; + ht.rows(temp_in, temp_out); + for (j = 0; j < n; ++j) out[j * n4 + i] = temp_out[j]; + } + + // Columns + for (i = 0; i < n; ++i) { + for (j = 0; j < n4; ++j) temp_in[j] = out[j + i * n4]; + ht.cols(temp_in, temp_out); + for (j = 0; j < n4; ++j) + output[i + j * n] = (temp_out[j] + (temp_out[j] < 0)) >> 1; + } + // Note: overall scale factor of transform is 8 times unitary +} + +void av1_fht16x4_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct4, fdct16 }, // DCT_DCT + { fadst4, fdct16 }, // ADST_DCT + { fdct4, fadst16 }, // DCT_ADST + { fadst4, fadst16 }, // ADST_ADST +#if CONFIG_EXT_TX + { fadst4, fdct16 }, // FLIPADST_DCT + { fdct4, fadst16 }, // DCT_FLIPADST + { fadst4, fadst16 }, // FLIPADST_FLIPADST + { fadst4, fadst16 }, // ADST_FLIPADST + { fadst4, fadst16 }, // FLIPADST_ADST + { fidtx4, fidtx16 }, // IDTX + { fdct4, fidtx16 }, // V_DCT + { fidtx4, fdct16 }, // H_DCT + { fadst4, fidtx16 }, // V_ADST + { fidtx4, fadst16 }, // H_ADST + { fadst4, fidtx16 }, // V_FLIPADST + { fidtx4, fadst16 }, // H_FLIPADST +#endif + }; + const transform_2d ht = FHT[tx_type]; + const int n = 4; + const int n4 = 16; + tran_low_t out[16 * 4]; + tran_low_t temp_in[16], temp_out[16]; + int i, j; +#if CONFIG_EXT_TX + int16_t flipped_input[16 * 4]; + maybe_flip_input(&input, &stride, n, n4, flipped_input, tx_type); +#endif + + // Columns + for (i = 0; i < n4; ++i) { + for (j = 0; j < n; ++j) temp_in[j] = input[j * stride + i] * 4; + ht.cols(temp_in, temp_out); + for (j = 0; j < n; ++j) out[j * n4 + i] = temp_out[j]; + } + + // Rows + for (i = 0; i < n; ++i) { + for (j = 0; j < n4; ++j) temp_in[j] = out[j + i * n4]; + ht.rows(temp_in, temp_out); + for (j = 0; j < n4; ++j) + output[j + i * n4] = (temp_out[j] + (temp_out[j] < 0)) >> 1; + } + // Note: overall scale factor of transform is 8 times unitary +} + +void av1_fht8x16_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct16, fdct8 }, // DCT_DCT + { fadst16, fdct8 }, // ADST_DCT + { fdct16, fadst8 }, // DCT_ADST + { fadst16, fadst8 }, // ADST_ADST +#if CONFIG_EXT_TX + { fadst16, fdct8 }, // FLIPADST_DCT + { fdct16, fadst8 }, // DCT_FLIPADST + { fadst16, fadst8 }, // FLIPADST_FLIPADST + { fadst16, fadst8 }, // ADST_FLIPADST + { fadst16, fadst8 }, // FLIPADST_ADST + { fidtx16, fidtx8 }, // IDTX + { fdct16, fidtx8 }, // V_DCT + { fidtx16, fdct8 }, // H_DCT + { fadst16, fidtx8 }, // V_ADST + { fidtx16, fadst8 }, // H_ADST + { fadst16, fidtx8 }, // V_FLIPADST + { fidtx16, fadst8 }, // H_FLIPADST +#endif + }; + const transform_2d ht = FHT[tx_type]; + const int n = 8; + const int n2 = 16; + tran_low_t out[16 * 8]; + tran_low_t temp_in[16], temp_out[16]; + int i, j; +#if CONFIG_EXT_TX + int16_t flipped_input[16 * 8]; + maybe_flip_input(&input, &stride, n2, n, flipped_input, tx_type); +#endif + + // Rows + for (i = 0; i < n2; ++i) { + for (j = 0; j < n; ++j) + temp_in[j] = + (tran_low_t)fdct_round_shift(input[i * stride + j] * 4 * Sqrt2); + ht.rows(temp_in, temp_out); + for (j = 0; j < n; ++j) + out[j * n2 + i] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 2); + } + + // Columns + for (i = 0; i < n; ++i) { + for (j = 0; j < n2; ++j) temp_in[j] = out[j + i * n2]; + ht.cols(temp_in, temp_out); + for (j = 0; j < n2; ++j) output[i + j * n] = temp_out[j]; + } + // Note: overall scale factor of transform is 8 times unitary +} + +void av1_fht16x8_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct8, fdct16 }, // DCT_DCT + { fadst8, fdct16 }, // ADST_DCT + { fdct8, fadst16 }, // DCT_ADST + { fadst8, fadst16 }, // ADST_ADST +#if CONFIG_EXT_TX + { fadst8, fdct16 }, // FLIPADST_DCT + { fdct8, fadst16 }, // DCT_FLIPADST + { fadst8, fadst16 }, // FLIPADST_FLIPADST + { fadst8, fadst16 }, // ADST_FLIPADST + { fadst8, fadst16 }, // FLIPADST_ADST + { fidtx8, fidtx16 }, // IDTX + { fdct8, fidtx16 }, // V_DCT + { fidtx8, fdct16 }, // H_DCT + { fadst8, fidtx16 }, // V_ADST + { fidtx8, fadst16 }, // H_ADST + { fadst8, fidtx16 }, // V_FLIPADST + { fidtx8, fadst16 }, // H_FLIPADST +#endif + }; + const transform_2d ht = FHT[tx_type]; + const int n = 8; + const int n2 = 16; + tran_low_t out[16 * 8]; + tran_low_t temp_in[16], temp_out[16]; + int i, j; +#if CONFIG_EXT_TX + int16_t flipped_input[16 * 8]; + maybe_flip_input(&input, &stride, n, n2, flipped_input, tx_type); +#endif + + // Columns + for (i = 0; i < n2; ++i) { + for (j = 0; j < n; ++j) + temp_in[j] = + (tran_low_t)fdct_round_shift(input[j * stride + i] * 4 * Sqrt2); + ht.cols(temp_in, temp_out); + for (j = 0; j < n; ++j) + out[j * n2 + i] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 2); + } + + // Rows + for (i = 0; i < n; ++i) { + for (j = 0; j < n2; ++j) temp_in[j] = out[j + i * n2]; + ht.rows(temp_in, temp_out); + for (j = 0; j < n2; ++j) output[j + i * n2] = temp_out[j]; + } + // Note: overall scale factor of transform is 8 times unitary +} + +void av1_fht8x32_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct32, fdct8 }, // DCT_DCT + { fhalfright32, fdct8 }, // ADST_DCT + { fdct32, fadst8 }, // DCT_ADST + { fhalfright32, fadst8 }, // ADST_ADST +#if CONFIG_EXT_TX + { fhalfright32, fdct8 }, // FLIPADST_DCT + { fdct32, fadst8 }, // DCT_FLIPADST + { fhalfright32, fadst8 }, // FLIPADST_FLIPADST + { fhalfright32, fadst8 }, // ADST_FLIPADST + { fhalfright32, fadst8 }, // FLIPADST_ADST + { fidtx32, fidtx8 }, // IDTX + { fdct32, fidtx8 }, // V_DCT + { fidtx32, fdct8 }, // H_DCT + { fhalfright32, fidtx8 }, // V_ADST + { fidtx32, fadst8 }, // H_ADST + { fhalfright32, fidtx8 }, // V_FLIPADST + { fidtx32, fadst8 }, // H_FLIPADST +#endif + }; + const transform_2d ht = FHT[tx_type]; + const int n = 8; + const int n4 = 32; + tran_low_t out[32 * 8]; + tran_low_t temp_in[32], temp_out[32]; + int i, j; +#if CONFIG_EXT_TX + int16_t flipped_input[32 * 8]; + maybe_flip_input(&input, &stride, n4, n, flipped_input, tx_type); +#endif + + // Rows + for (i = 0; i < n4; ++i) { + for (j = 0; j < n; ++j) temp_in[j] = input[i * stride + j] * 4; + ht.rows(temp_in, temp_out); + for (j = 0; j < n; ++j) out[j * n4 + i] = temp_out[j]; + } + + // Columns + for (i = 0; i < n; ++i) { + for (j = 0; j < n4; ++j) temp_in[j] = out[j + i * n4]; + ht.cols(temp_in, temp_out); + for (j = 0; j < n4; ++j) + output[i + j * n] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 2); + } + // Note: overall scale factor of transform is 4 times unitary +} + +void av1_fht32x8_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct8, fdct32 }, // DCT_DCT + { fadst8, fdct32 }, // ADST_DCT + { fdct8, fhalfright32 }, // DCT_ADST + { fadst8, fhalfright32 }, // ADST_ADST +#if CONFIG_EXT_TX + { fadst8, fdct32 }, // FLIPADST_DCT + { fdct8, fhalfright32 }, // DCT_FLIPADST + { fadst8, fhalfright32 }, // FLIPADST_FLIPADST + { fadst8, fhalfright32 }, // ADST_FLIPADST + { fadst8, fhalfright32 }, // FLIPADST_ADST + { fidtx8, fidtx32 }, // IDTX + { fdct8, fidtx32 }, // V_DCT + { fidtx8, fdct32 }, // H_DCT + { fadst8, fidtx32 }, // V_ADST + { fidtx8, fhalfright32 }, // H_ADST + { fadst8, fidtx32 }, // V_FLIPADST + { fidtx8, fhalfright32 }, // H_FLIPADST +#endif + }; + const transform_2d ht = FHT[tx_type]; + const int n = 8; + const int n4 = 32; + tran_low_t out[32 * 8]; + tran_low_t temp_in[32], temp_out[32]; + int i, j; +#if CONFIG_EXT_TX + int16_t flipped_input[32 * 8]; + maybe_flip_input(&input, &stride, n, n4, flipped_input, tx_type); +#endif + + // Columns + for (i = 0; i < n4; ++i) { + for (j = 0; j < n; ++j) temp_in[j] = input[j * stride + i] * 4; + ht.cols(temp_in, temp_out); + for (j = 0; j < n; ++j) out[j * n4 + i] = temp_out[j]; + } + + // Rows + for (i = 0; i < n; ++i) { + for (j = 0; j < n4; ++j) temp_in[j] = out[j + i * n4]; + ht.rows(temp_in, temp_out); + for (j = 0; j < n4; ++j) + output[j + i * n4] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 2); + } + // Note: overall scale factor of transform is 4 times unitary +} + +void av1_fht16x32_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct32, fdct16 }, // DCT_DCT + { fhalfright32, fdct16 }, // ADST_DCT + { fdct32, fadst16 }, // DCT_ADST + { fhalfright32, fadst16 }, // ADST_ADST +#if CONFIG_EXT_TX + { fhalfright32, fdct16 }, // FLIPADST_DCT + { fdct32, fadst16 }, // DCT_FLIPADST + { fhalfright32, fadst16 }, // FLIPADST_FLIPADST + { fhalfright32, fadst16 }, // ADST_FLIPADST + { fhalfright32, fadst16 }, // FLIPADST_ADST + { fidtx32, fidtx16 }, // IDTX + { fdct32, fidtx16 }, // V_DCT + { fidtx32, fdct16 }, // H_DCT + { fhalfright32, fidtx16 }, // V_ADST + { fidtx32, fadst16 }, // H_ADST + { fhalfright32, fidtx16 }, // V_FLIPADST + { fidtx32, fadst16 }, // H_FLIPADST +#endif + }; + const transform_2d ht = FHT[tx_type]; + const int n = 16; + const int n2 = 32; + tran_low_t out[32 * 16]; + tran_low_t temp_in[32], temp_out[32]; + int i, j; +#if CONFIG_EXT_TX + int16_t flipped_input[32 * 16]; + maybe_flip_input(&input, &stride, n2, n, flipped_input, tx_type); +#endif + + // Rows + for (i = 0; i < n2; ++i) { + for (j = 0; j < n; ++j) + temp_in[j] = + (tran_low_t)fdct_round_shift(input[i * stride + j] * 4 * Sqrt2); + ht.rows(temp_in, temp_out); + for (j = 0; j < n; ++j) + out[j * n2 + i] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 4); + } + + // Columns + for (i = 0; i < n; ++i) { + for (j = 0; j < n2; ++j) temp_in[j] = out[j + i * n2]; + ht.cols(temp_in, temp_out); + for (j = 0; j < n2; ++j) output[i + j * n] = temp_out[j]; + } + // Note: overall scale factor of transform is 4 times unitary +} + +void av1_fht32x16_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct16, fdct32 }, // DCT_DCT + { fadst16, fdct32 }, // ADST_DCT + { fdct16, fhalfright32 }, // DCT_ADST + { fadst16, fhalfright32 }, // ADST_ADST +#if CONFIG_EXT_TX + { fadst16, fdct32 }, // FLIPADST_DCT + { fdct16, fhalfright32 }, // DCT_FLIPADST + { fadst16, fhalfright32 }, // FLIPADST_FLIPADST + { fadst16, fhalfright32 }, // ADST_FLIPADST + { fadst16, fhalfright32 }, // FLIPADST_ADST + { fidtx16, fidtx32 }, // IDTX + { fdct16, fidtx32 }, // V_DCT + { fidtx16, fdct32 }, // H_DCT + { fadst16, fidtx32 }, // V_ADST + { fidtx16, fhalfright32 }, // H_ADST + { fadst16, fidtx32 }, // V_FLIPADST + { fidtx16, fhalfright32 }, // H_FLIPADST +#endif + }; + const transform_2d ht = FHT[tx_type]; + const int n = 16; + const int n2 = 32; + tran_low_t out[32 * 16]; + tran_low_t temp_in[32], temp_out[32]; + int i, j; +#if CONFIG_EXT_TX + int16_t flipped_input[32 * 16]; + maybe_flip_input(&input, &stride, n, n2, flipped_input, tx_type); +#endif + + // Columns + for (i = 0; i < n2; ++i) { + for (j = 0; j < n; ++j) + temp_in[j] = + (tran_low_t)fdct_round_shift(input[j * stride + i] * 4 * Sqrt2); + ht.cols(temp_in, temp_out); + for (j = 0; j < n; ++j) + out[j * n2 + i] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 4); + } + + // Rows + for (i = 0; i < n; ++i) { + for (j = 0; j < n2; ++j) temp_in[j] = out[j + i * n2]; + ht.rows(temp_in, temp_out); + for (j = 0; j < n2; ++j) output[j + i * n2] = temp_out[j]; + } + // Note: overall scale factor of transform is 4 times unitary +} + +void av1_fdct8x8_quant_c(const int16_t *input, int stride, + tran_low_t *coeff_ptr, intptr_t n_coeffs, + int skip_block, const int16_t *zbin_ptr, + const int16_t *round_ptr, const int16_t *quant_ptr, + const int16_t *quant_shift_ptr, tran_low_t *qcoeff_ptr, + tran_low_t *dqcoeff_ptr, const int16_t *dequant_ptr, + uint16_t *eob_ptr, const int16_t *scan, + const int16_t *iscan +#if CONFIG_AOM_QM + , + const qm_val_t *qm_ptr, const qm_val_t *iqm_ptr +#endif + ) { + int eob = -1; + + int i, j; + tran_low_t intermediate[64]; + + // Transform columns + { + tran_low_t *output = intermediate; + tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; // canbe16 + tran_high_t t0, t1, t2, t3; // needs32 + tran_high_t x0, x1, x2, x3; // canbe16 + + for (i = 0; i < 8; i++) { + // stage 1 + s0 = (input[0 * stride] + input[7 * stride]) * 4; + s1 = (input[1 * stride] + input[6 * stride]) * 4; + s2 = (input[2 * stride] + input[5 * stride]) * 4; + s3 = (input[3 * stride] + input[4 * stride]) * 4; + s4 = (input[3 * stride] - input[4 * stride]) * 4; + s5 = (input[2 * stride] - input[5 * stride]) * 4; + s6 = (input[1 * stride] - input[6 * stride]) * 4; + s7 = (input[0 * stride] - input[7 * stride]) * 4; + + // fdct4(step, step); + x0 = s0 + s3; + x1 = s1 + s2; + x2 = s1 - s2; + x3 = s0 - s3; + t0 = (x0 + x1) * cospi_16_64; + t1 = (x0 - x1) * cospi_16_64; + t2 = x2 * cospi_24_64 + x3 * cospi_8_64; + t3 = -x2 * cospi_8_64 + x3 * cospi_24_64; + output[0 * 8] = (tran_low_t)fdct_round_shift(t0); + output[2 * 8] = (tran_low_t)fdct_round_shift(t2); + output[4 * 8] = (tran_low_t)fdct_round_shift(t1); + output[6 * 8] = (tran_low_t)fdct_round_shift(t3); + + // stage 2 + t0 = (s6 - s5) * cospi_16_64; + t1 = (s6 + s5) * cospi_16_64; + t2 = fdct_round_shift(t0); + t3 = fdct_round_shift(t1); + + // stage 3 + x0 = s4 + t2; + x1 = s4 - t2; + x2 = s7 - t3; + x3 = s7 + t3; + + // stage 4 + t0 = x0 * cospi_28_64 + x3 * cospi_4_64; + t1 = x1 * cospi_12_64 + x2 * cospi_20_64; + t2 = x2 * cospi_12_64 + x1 * -cospi_20_64; + t3 = x3 * cospi_28_64 + x0 * -cospi_4_64; + output[1 * 8] = (tran_low_t)fdct_round_shift(t0); + output[3 * 8] = (tran_low_t)fdct_round_shift(t2); + output[5 * 8] = (tran_low_t)fdct_round_shift(t1); + output[7 * 8] = (tran_low_t)fdct_round_shift(t3); + input++; + output++; + } + } + + // Rows + for (i = 0; i < 8; ++i) { + fdct8(&intermediate[i * 8], &coeff_ptr[i * 8]); + for (j = 0; j < 8; ++j) coeff_ptr[j + i * 8] /= 2; + } + + // TODO(jingning) Decide the need of these arguments after the + // quantization process is completed. + (void)zbin_ptr; + (void)quant_shift_ptr; + (void)iscan; + + memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr)); + memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr)); + + if (!skip_block) { + // Quantization pass: All coefficients with index >= zero_flag are + // skippable. Note: zero_flag can be zero. + for (i = 0; i < n_coeffs; i++) { + const int rc = scan[i]; + const int coeff = coeff_ptr[rc]; +#if CONFIG_AOM_QM + const qm_val_t wt = qm_ptr[rc]; + const qm_val_t iwt = iqm_ptr[rc]; + const int dequant = + (dequant_ptr[rc != 0] * iwt + (1 << (AOM_QM_BITS - 1))) >> + AOM_QM_BITS; +#endif + const int coeff_sign = (coeff >> 31); + const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign; + + int64_t tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX); + int tmp32; +#if CONFIG_AOM_QM + tmp32 = (int)((tmp * quant_ptr[rc != 0] * wt) >> (16 + AOM_QM_BITS)); + qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign; + dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant; +#else + tmp32 = (int)((tmp * quant_ptr[rc != 0]) >> 16); + qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign; + dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0]; +#endif + + if (tmp32) eob = i; + } + } + *eob_ptr = eob + 1; +} + +void av1_fht8x8_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + if (tx_type == DCT_DCT) { + aom_fdct8x8_c(input, output, stride); + } else { + static const transform_2d FHT[] = { + { fdct8, fdct8 }, // DCT_DCT + { fadst8, fdct8 }, // ADST_DCT + { fdct8, fadst8 }, // DCT_ADST + { fadst8, fadst8 }, // ADST_ADST +#if CONFIG_EXT_TX + { fadst8, fdct8 }, // FLIPADST_DCT + { fdct8, fadst8 }, // DCT_FLIPADST + { fadst8, fadst8 }, // FLIPADST_FLIPADST + { fadst8, fadst8 }, // ADST_FLIPADST + { fadst8, fadst8 }, // FLIPADST_ADST + { fidtx8, fidtx8 }, // IDTX + { fdct8, fidtx8 }, // V_DCT + { fidtx8, fdct8 }, // H_DCT + { fadst8, fidtx8 }, // V_ADST + { fidtx8, fadst8 }, // H_ADST + { fadst8, fidtx8 }, // V_FLIPADST + { fidtx8, fadst8 }, // H_FLIPADST +#endif // CONFIG_EXT_TX + }; + const transform_2d ht = FHT[tx_type]; + tran_low_t out[64]; + int i, j; + tran_low_t temp_in[8], temp_out[8]; + +#if CONFIG_EXT_TX + int16_t flipped_input[8 * 8]; + maybe_flip_input(&input, &stride, 8, 8, flipped_input, tx_type); +#endif + + // Columns + for (i = 0; i < 8; ++i) { + for (j = 0; j < 8; ++j) temp_in[j] = input[j * stride + i] * 4; + ht.cols(temp_in, temp_out); + for (j = 0; j < 8; ++j) out[j * 8 + i] = temp_out[j]; + } + + // Rows + for (i = 0; i < 8; ++i) { + for (j = 0; j < 8; ++j) temp_in[j] = out[j + i * 8]; + ht.rows(temp_in, temp_out); + for (j = 0; j < 8; ++j) + output[j + i * 8] = (temp_out[j] + (temp_out[j] < 0)) >> 1; + } + } +} + +/* 4-point reversible, orthonormal Walsh-Hadamard in 3.5 adds, 0.5 shifts per + pixel. */ +void av1_fwht4x4_c(const int16_t *input, tran_low_t *output, int stride) { + int i; + tran_high_t a1, b1, c1, d1, e1; + const int16_t *ip_pass0 = input; + const tran_low_t *ip = NULL; + tran_low_t *op = output; + + for (i = 0; i < 4; i++) { + a1 = ip_pass0[0 * stride]; + b1 = ip_pass0[1 * stride]; + c1 = ip_pass0[2 * stride]; + d1 = ip_pass0[3 * stride]; + + a1 += b1; + d1 = d1 - c1; + e1 = (a1 - d1) >> 1; + b1 = e1 - b1; + c1 = e1 - c1; + a1 -= c1; + d1 += b1; + op[0] = (tran_low_t)a1; + op[4] = (tran_low_t)c1; + op[8] = (tran_low_t)d1; + op[12] = (tran_low_t)b1; + + ip_pass0++; + op++; + } + ip = output; + op = output; + + for (i = 0; i < 4; i++) { + a1 = ip[0]; + b1 = ip[1]; + c1 = ip[2]; + d1 = ip[3]; + + a1 += b1; + d1 -= c1; + e1 = (a1 - d1) >> 1; + b1 = e1 - b1; + c1 = e1 - c1; + a1 -= c1; + d1 += b1; + op[0] = (tran_low_t)(a1 * UNIT_QUANT_FACTOR); + op[1] = (tran_low_t)(c1 * UNIT_QUANT_FACTOR); + op[2] = (tran_low_t)(d1 * UNIT_QUANT_FACTOR); + op[3] = (tran_low_t)(b1 * UNIT_QUANT_FACTOR); + + ip += 4; + op += 4; + } +} + +void av1_fht16x16_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct16, fdct16 }, // DCT_DCT + { fadst16, fdct16 }, // ADST_DCT + { fdct16, fadst16 }, // DCT_ADST + { fadst16, fadst16 }, // ADST_ADST +#if CONFIG_EXT_TX + { fadst16, fdct16 }, // FLIPADST_DCT + { fdct16, fadst16 }, // DCT_FLIPADST + { fadst16, fadst16 }, // FLIPADST_FLIPADST + { fadst16, fadst16 }, // ADST_FLIPADST + { fadst16, fadst16 }, // FLIPADST_ADST + { fidtx16, fidtx16 }, // IDTX + { fdct16, fidtx16 }, // V_DCT + { fidtx16, fdct16 }, // H_DCT + { fadst16, fidtx16 }, // V_ADST + { fidtx16, fadst16 }, // H_ADST + { fadst16, fidtx16 }, // V_FLIPADST + { fidtx16, fadst16 }, // H_FLIPADST +#endif // CONFIG_EXT_TX + }; + + const transform_2d ht = FHT[tx_type]; + tran_low_t out[256]; + int i, j; + tran_low_t temp_in[16], temp_out[16]; + +#if CONFIG_EXT_TX + int16_t flipped_input[16 * 16]; + maybe_flip_input(&input, &stride, 16, 16, flipped_input, tx_type); +#endif + + // Columns + for (i = 0; i < 16; ++i) { + for (j = 0; j < 16; ++j) temp_in[j] = input[j * stride + i] * 4; + ht.cols(temp_in, temp_out); + for (j = 0; j < 16; ++j) + out[j * 16 + i] = (temp_out[j] + 1 + (temp_out[j] < 0)) >> 2; + } + + // Rows + for (i = 0; i < 16; ++i) { + for (j = 0; j < 16; ++j) temp_in[j] = out[j + i * 16]; + ht.rows(temp_in, temp_out); + for (j = 0; j < 16; ++j) output[j + i * 16] = temp_out[j]; + } +} + +#if CONFIG_HIGHBITDEPTH +void av1_highbd_fht4x4_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht4x4_c(input, output, stride, tx_type); +} + +void av1_highbd_fht4x8_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht4x8_c(input, output, stride, tx_type); +} + +void av1_highbd_fht8x4_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht8x4_c(input, output, stride, tx_type); +} + +void av1_highbd_fht8x16_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht8x16_c(input, output, stride, tx_type); +} + +void av1_highbd_fht16x8_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht16x8_c(input, output, stride, tx_type); +} + +void av1_highbd_fht16x32_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht16x32_c(input, output, stride, tx_type); +} + +void av1_highbd_fht32x16_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht32x16_c(input, output, stride, tx_type); +} + +void av1_highbd_fht4x16_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht4x16_c(input, output, stride, tx_type); +} + +void av1_highbd_fht16x4_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht16x4_c(input, output, stride, tx_type); +} + +void av1_highbd_fht8x32_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht8x32_c(input, output, stride, tx_type); +} + +void av1_highbd_fht32x8_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht32x8_c(input, output, stride, tx_type); +} + +void av1_highbd_fht8x8_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht8x8_c(input, output, stride, tx_type); +} + +void av1_highbd_fwht4x4_c(const int16_t *input, tran_low_t *output, + int stride) { + av1_fwht4x4_c(input, output, stride); +} + +void av1_highbd_fht16x16_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht16x16_c(input, output, stride, tx_type); +} +#endif // CONFIG_HIGHBITDEPTH + +void av1_fht32x32_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct32, fdct32 }, // DCT_DCT +#if CONFIG_EXT_TX + { fhalfright32, fdct32 }, // ADST_DCT + { fdct32, fhalfright32 }, // DCT_ADST + { fhalfright32, fhalfright32 }, // ADST_ADST + { fhalfright32, fdct32 }, // FLIPADST_DCT + { fdct32, fhalfright32 }, // DCT_FLIPADST + { fhalfright32, fhalfright32 }, // FLIPADST_FLIPADST + { fhalfright32, fhalfright32 }, // ADST_FLIPADST + { fhalfright32, fhalfright32 }, // FLIPADST_ADST + { fidtx32, fidtx32 }, // IDTX + { fdct32, fidtx32 }, // V_DCT + { fidtx32, fdct32 }, // H_DCT + { fhalfright32, fidtx32 }, // V_ADST + { fidtx32, fhalfright32 }, // H_ADST + { fhalfright32, fidtx32 }, // V_FLIPADST + { fidtx32, fhalfright32 }, // H_FLIPADST +#endif + }; + const transform_2d ht = FHT[tx_type]; + tran_low_t out[1024]; + int i, j; + tran_low_t temp_in[32], temp_out[32]; + +#if CONFIG_EXT_TX + int16_t flipped_input[32 * 32]; + maybe_flip_input(&input, &stride, 32, 32, flipped_input, tx_type); +#endif + + // Columns + for (i = 0; i < 32; ++i) { + for (j = 0; j < 32; ++j) temp_in[j] = input[j * stride + i] * 4; + ht.cols(temp_in, temp_out); + for (j = 0; j < 32; ++j) + out[j * 32 + i] = ROUND_POWER_OF_TWO_SIGNED(temp_out[j], 4); + } + + // Rows + for (i = 0; i < 32; ++i) { + for (j = 0; j < 32; ++j) temp_in[j] = out[j + i * 32]; + ht.rows(temp_in, temp_out); + for (j = 0; j < 32; ++j) output[j + i * 32] = temp_out[j]; + } +} + +#if CONFIG_TX64X64 +#if CONFIG_EXT_TX +static void fidtx64(const tran_low_t *input, tran_low_t *output) { + int i; + for (i = 0; i < 64; ++i) + output[i] = (tran_low_t)fdct_round_shift(input[i] * 4 * Sqrt2); +} + +// For use in lieu of ADST +static void fhalfright64(const tran_low_t *input, tran_low_t *output) { + int i; + tran_low_t inputhalf[32]; + for (i = 0; i < 32; ++i) { + output[32 + i] = (tran_low_t)fdct_round_shift(input[i] * 4 * Sqrt2); + } + // Multiply input by sqrt(2) + for (i = 0; i < 32; ++i) { + inputhalf[i] = (tran_low_t)fdct_round_shift(input[i + 32] * Sqrt2); + } + fdct32(inputhalf, output); + // Note overall scaling factor is 2 times unitary +} +#endif // CONFIG_EXT_TX + +static void fdct64_col(const tran_low_t *input, tran_low_t *output) { + int32_t in[64], out[64]; + int i; + for (i = 0; i < 64; ++i) in[i] = (int32_t)input[i]; + av1_fdct64_new(in, out, fwd_cos_bit_col_dct_dct_64, + fwd_stage_range_col_dct_dct_64); + for (i = 0; i < 64; ++i) output[i] = (tran_low_t)out[i]; +} + +static void fdct64_row(const tran_low_t *input, tran_low_t *output) { + int32_t in[64], out[64]; + int i; + for (i = 0; i < 64; ++i) in[i] = (int32_t)input[i]; + av1_fdct64_new(in, out, fwd_cos_bit_row_dct_dct_64, + fwd_stage_range_row_dct_dct_64); + for (i = 0; i < 64; ++i) output[i] = (tran_low_t)out[i]; +} + +void av1_fht64x64_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + static const transform_2d FHT[] = { + { fdct64_col, fdct64_row }, // DCT_DCT +#if CONFIG_EXT_TX + { fhalfright64, fdct64_row }, // ADST_DCT + { fdct64_col, fhalfright64 }, // DCT_ADST + { fhalfright64, fhalfright64 }, // ADST_ADST + { fhalfright64, fdct64_row }, // FLIPADST_DCT + { fdct64_col, fhalfright64 }, // DCT_FLIPADST + { fhalfright64, fhalfright64 }, // FLIPADST_FLIPADST + { fhalfright64, fhalfright64 }, // ADST_FLIPADST + { fhalfright64, fhalfright64 }, // FLIPADST_ADST + { fidtx64, fidtx64 }, // IDTX + { fdct64_col, fidtx64 }, // V_DCT + { fidtx64, fdct64_row }, // H_DCT + { fhalfright64, fidtx64 }, // V_ADST + { fidtx64, fhalfright64 }, // H_ADST + { fhalfright64, fidtx64 }, // V_FLIPADST + { fidtx64, fhalfright64 }, // H_FLIPADST +#endif + }; + const transform_2d ht = FHT[tx_type]; + tran_low_t out[4096]; + int i, j; + tran_low_t temp_in[64], temp_out[64]; +#if CONFIG_EXT_TX + int16_t flipped_input[64 * 64]; + maybe_flip_input(&input, &stride, 64, 64, flipped_input, tx_type); +#endif + // Columns + for (i = 0; i < 64; ++i) { + for (j = 0; j < 64; ++j) temp_in[j] = input[j * stride + i]; + ht.cols(temp_in, temp_out); + for (j = 0; j < 64; ++j) + out[j * 64 + i] = (temp_out[j] + 1 + (temp_out[j] > 0)) >> 2; + } + + // Rows + for (i = 0; i < 64; ++i) { + for (j = 0; j < 64; ++j) temp_in[j] = out[j + i * 64]; + ht.rows(temp_in, temp_out); + for (j = 0; j < 64; ++j) + output[j + i * 64] = + (tran_low_t)((temp_out[j] + 1 + (temp_out[j] < 0)) >> 2); + } +} +#endif // CONFIG_TX64X64 + +#if CONFIG_EXT_TX +// Forward identity transform. +void av1_fwd_idtx_c(const int16_t *src_diff, tran_low_t *coeff, int stride, + int bs, int tx_type) { + int r, c; + const int shift = bs < 32 ? 3 : (bs < 64 ? 2 : 1); + if (tx_type == IDTX) { + for (r = 0; r < bs; ++r) { + for (c = 0; c < bs; ++c) coeff[c] = src_diff[c] * (1 << shift); + src_diff += stride; + coeff += bs; + } + } +} +#endif // CONFIG_EXT_TX + +#if CONFIG_HIGHBITDEPTH +void av1_highbd_fht32x32_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht32x32_c(input, output, stride, tx_type); +} + +#if CONFIG_TX64X64 +void av1_highbd_fht64x64_c(const int16_t *input, tran_low_t *output, int stride, + int tx_type) { + av1_fht64x64_c(input, output, stride, tx_type); +} +#endif // CONFIG_TX64X64 +#endif // CONFIG_HIGHBITDEPTH +#endif // !AV1_DCT_GTEST |