| /* |
| * 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 <math.h> |
| #include <string.h> |
| |
| #include "./aom_dsp_rtcd.h" |
| #include "aom_dsp/inv_txfm.h" |
| |
| void aom_iwht4x4_16_add_c(const tran_low_t *input, uint8_t *dest, int stride) { |
| /* 4-point reversible, orthonormal inverse Walsh-Hadamard in 3.5 adds, |
| 0.5 shifts per pixel. */ |
| int i; |
| tran_low_t output[16]; |
| tran_high_t a1, b1, c1, d1, e1; |
| const tran_low_t *ip = input; |
| tran_low_t *op = output; |
| |
| for (i = 0; i < 4; i++) { |
| a1 = ip[0] >> UNIT_QUANT_SHIFT; |
| c1 = ip[1] >> UNIT_QUANT_SHIFT; |
| d1 = ip[2] >> UNIT_QUANT_SHIFT; |
| b1 = ip[3] >> UNIT_QUANT_SHIFT; |
| a1 += c1; |
| d1 -= b1; |
| e1 = (a1 - d1) >> 1; |
| b1 = e1 - b1; |
| c1 = e1 - c1; |
| a1 -= b1; |
| d1 += c1; |
| op[0] = WRAPLOW(a1); |
| op[1] = WRAPLOW(b1); |
| op[2] = WRAPLOW(c1); |
| op[3] = WRAPLOW(d1); |
| ip += 4; |
| op += 4; |
| } |
| |
| ip = output; |
| for (i = 0; i < 4; i++) { |
| a1 = ip[4 * 0]; |
| c1 = ip[4 * 1]; |
| d1 = ip[4 * 2]; |
| b1 = ip[4 * 3]; |
| a1 += c1; |
| d1 -= b1; |
| e1 = (a1 - d1) >> 1; |
| b1 = e1 - b1; |
| c1 = e1 - c1; |
| a1 -= b1; |
| d1 += c1; |
| dest[stride * 0] = clip_pixel_add(dest[stride * 0], WRAPLOW(a1)); |
| dest[stride * 1] = clip_pixel_add(dest[stride * 1], WRAPLOW(b1)); |
| dest[stride * 2] = clip_pixel_add(dest[stride * 2], WRAPLOW(c1)); |
| dest[stride * 3] = clip_pixel_add(dest[stride * 3], WRAPLOW(d1)); |
| |
| ip++; |
| dest++; |
| } |
| } |
| |
| void aom_iwht4x4_1_add_c(const tran_low_t *in, uint8_t *dest, int dest_stride) { |
| int i; |
| tran_high_t a1, e1; |
| tran_low_t tmp[4]; |
| const tran_low_t *ip = in; |
| tran_low_t *op = tmp; |
| |
| a1 = ip[0] >> UNIT_QUANT_SHIFT; |
| e1 = a1 >> 1; |
| a1 -= e1; |
| op[0] = WRAPLOW(a1); |
| op[1] = op[2] = op[3] = WRAPLOW(e1); |
| |
| ip = tmp; |
| for (i = 0; i < 4; i++) { |
| e1 = ip[0] >> 1; |
| a1 = ip[0] - e1; |
| dest[dest_stride * 0] = clip_pixel_add(dest[dest_stride * 0], a1); |
| dest[dest_stride * 1] = clip_pixel_add(dest[dest_stride * 1], e1); |
| dest[dest_stride * 2] = clip_pixel_add(dest[dest_stride * 2], e1); |
| dest[dest_stride * 3] = clip_pixel_add(dest[dest_stride * 3], e1); |
| ip++; |
| dest++; |
| } |
| } |
| |
| void aom_idct4_c(const tran_low_t *input, tran_low_t *output) { |
| tran_low_t step[4]; |
| tran_high_t temp1, temp2; |
| // stage 1 |
| temp1 = (input[0] + input[2]) * cospi_16_64; |
| temp2 = (input[0] - input[2]) * cospi_16_64; |
| step[0] = WRAPLOW(dct_const_round_shift(temp1)); |
| step[1] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = input[1] * cospi_24_64 - input[3] * cospi_8_64; |
| temp2 = input[1] * cospi_8_64 + input[3] * cospi_24_64; |
| step[2] = WRAPLOW(dct_const_round_shift(temp1)); |
| step[3] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| // stage 2 |
| output[0] = WRAPLOW(step[0] + step[3]); |
| output[1] = WRAPLOW(step[1] + step[2]); |
| output[2] = WRAPLOW(step[1] - step[2]); |
| output[3] = WRAPLOW(step[0] - step[3]); |
| } |
| |
| void aom_idct4x4_16_add_c(const tran_low_t *input, uint8_t *dest, int stride) { |
| tran_low_t out[4 * 4]; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[4], temp_out[4]; |
| |
| // Rows |
| for (i = 0; i < 4; ++i) { |
| aom_idct4_c(input, outptr); |
| input += 4; |
| outptr += 4; |
| } |
| |
| // Columns |
| for (i = 0; i < 4; ++i) { |
| for (j = 0; j < 4; ++j) temp_in[j] = out[j * 4 + i]; |
| aom_idct4_c(temp_in, temp_out); |
| for (j = 0; j < 4; ++j) { |
| dest[j * stride + i] = clip_pixel_add(dest[j * stride + i], |
| ROUND_POWER_OF_TWO(temp_out[j], 4)); |
| } |
| } |
| } |
| |
| void aom_idct4x4_1_add_c(const tran_low_t *input, uint8_t *dest, |
| int dest_stride) { |
| int i; |
| tran_high_t a1; |
| tran_low_t out = WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64)); |
| out = WRAPLOW(dct_const_round_shift(out * cospi_16_64)); |
| a1 = ROUND_POWER_OF_TWO(out, 4); |
| |
| for (i = 0; i < 4; i++) { |
| dest[0] = clip_pixel_add(dest[0], a1); |
| dest[1] = clip_pixel_add(dest[1], a1); |
| dest[2] = clip_pixel_add(dest[2], a1); |
| dest[3] = clip_pixel_add(dest[3], a1); |
| dest += dest_stride; |
| } |
| } |
| |
| void aom_idct8_c(const tran_low_t *input, tran_low_t *output) { |
| tran_low_t step1[8], step2[8]; |
| tran_high_t temp1, temp2; |
| // stage 1 |
| step1[0] = input[0]; |
| step1[2] = input[4]; |
| step1[1] = input[2]; |
| step1[3] = input[6]; |
| temp1 = input[1] * cospi_28_64 - input[7] * cospi_4_64; |
| temp2 = input[1] * cospi_4_64 + input[7] * cospi_28_64; |
| step1[4] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[7] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = input[5] * cospi_12_64 - input[3] * cospi_20_64; |
| temp2 = input[5] * cospi_20_64 + input[3] * cospi_12_64; |
| step1[5] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[6] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| // stage 2 |
| temp1 = (step1[0] + step1[2]) * cospi_16_64; |
| temp2 = (step1[0] - step1[2]) * cospi_16_64; |
| step2[0] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[1] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = step1[1] * cospi_24_64 - step1[3] * cospi_8_64; |
| temp2 = step1[1] * cospi_8_64 + step1[3] * cospi_24_64; |
| step2[2] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[3] = WRAPLOW(dct_const_round_shift(temp2)); |
| step2[4] = WRAPLOW(step1[4] + step1[5]); |
| step2[5] = WRAPLOW(step1[4] - step1[5]); |
| step2[6] = WRAPLOW(-step1[6] + step1[7]); |
| step2[7] = WRAPLOW(step1[6] + step1[7]); |
| |
| // stage 3 |
| step1[0] = WRAPLOW(step2[0] + step2[3]); |
| step1[1] = WRAPLOW(step2[1] + step2[2]); |
| step1[2] = WRAPLOW(step2[1] - step2[2]); |
| step1[3] = WRAPLOW(step2[0] - step2[3]); |
| step1[4] = step2[4]; |
| temp1 = (step2[6] - step2[5]) * cospi_16_64; |
| temp2 = (step2[5] + step2[6]) * cospi_16_64; |
| step1[5] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[6] = WRAPLOW(dct_const_round_shift(temp2)); |
| step1[7] = step2[7]; |
| |
| // stage 4 |
| output[0] = WRAPLOW(step1[0] + step1[7]); |
| output[1] = WRAPLOW(step1[1] + step1[6]); |
| output[2] = WRAPLOW(step1[2] + step1[5]); |
| output[3] = WRAPLOW(step1[3] + step1[4]); |
| output[4] = WRAPLOW(step1[3] - step1[4]); |
| output[5] = WRAPLOW(step1[2] - step1[5]); |
| output[6] = WRAPLOW(step1[1] - step1[6]); |
| output[7] = WRAPLOW(step1[0] - step1[7]); |
| } |
| |
| void aom_idct8x8_64_add_c(const tran_low_t *input, uint8_t *dest, int stride) { |
| tran_low_t out[8 * 8]; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[8], temp_out[8]; |
| |
| // First transform rows |
| for (i = 0; i < 8; ++i) { |
| aom_idct8_c(input, outptr); |
| input += 8; |
| outptr += 8; |
| } |
| |
| // Then transform columns |
| for (i = 0; i < 8; ++i) { |
| for (j = 0; j < 8; ++j) temp_in[j] = out[j * 8 + i]; |
| aom_idct8_c(temp_in, temp_out); |
| for (j = 0; j < 8; ++j) { |
| dest[j * stride + i] = clip_pixel_add(dest[j * stride + i], |
| ROUND_POWER_OF_TWO(temp_out[j], 5)); |
| } |
| } |
| } |
| |
| void aom_idct8x8_1_add_c(const tran_low_t *input, uint8_t *dest, int stride) { |
| int i, j; |
| tran_high_t a1; |
| tran_low_t out = WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64)); |
| out = WRAPLOW(dct_const_round_shift(out * cospi_16_64)); |
| a1 = ROUND_POWER_OF_TWO(out, 5); |
| for (j = 0; j < 8; ++j) { |
| for (i = 0; i < 8; ++i) dest[i] = clip_pixel_add(dest[i], a1); |
| dest += stride; |
| } |
| } |
| |
| void aom_iadst4_c(const tran_low_t *input, tran_low_t *output) { |
| tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; |
| |
| tran_low_t x0 = input[0]; |
| tran_low_t x1 = input[1]; |
| tran_low_t x2 = input[2]; |
| tran_low_t 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_2_9 * x0; |
| s2 = sinpi_3_9 * x1; |
| s3 = sinpi_4_9 * x2; |
| s4 = sinpi_1_9 * x2; |
| s5 = sinpi_2_9 * x3; |
| s6 = sinpi_4_9 * x3; |
| s7 = WRAPLOW(x0 - x2 + x3); |
| |
| s0 = s0 + s3 + s5; |
| s1 = s1 - s4 - s6; |
| s3 = s2; |
| s2 = sinpi_3_9 * s7; |
| |
| // 1-D transform scaling factor is sqrt(2). |
| // The overall dynamic range is 14b (input) + 14b (multiplication scaling) |
| // + 1b (addition) = 29b. |
| // Hence the output bit depth is 15b. |
| output[0] = WRAPLOW(dct_const_round_shift(s0 + s3)); |
| output[1] = WRAPLOW(dct_const_round_shift(s1 + s3)); |
| output[2] = WRAPLOW(dct_const_round_shift(s2)); |
| output[3] = WRAPLOW(dct_const_round_shift(s0 + s1 - s3)); |
| } |
| |
| void aom_iadst8_c(const tran_low_t *input, tran_low_t *output) { |
| int 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]; |
| |
| if (!(x0 | x1 | x2 | x3 | x4 | x5 | x6 | x7)) { |
| output[0] = output[1] = output[2] = output[3] = output[4] = output[5] = |
| output[6] = output[7] = 0; |
| return; |
| } |
| |
| // stage 1 |
| s0 = (int)(cospi_2_64 * x0 + cospi_30_64 * x1); |
| s1 = (int)(cospi_30_64 * x0 - cospi_2_64 * x1); |
| s2 = (int)(cospi_10_64 * x2 + cospi_22_64 * x3); |
| s3 = (int)(cospi_22_64 * x2 - cospi_10_64 * x3); |
| s4 = (int)(cospi_18_64 * x4 + cospi_14_64 * x5); |
| s5 = (int)(cospi_14_64 * x4 - cospi_18_64 * x5); |
| s6 = (int)(cospi_26_64 * x6 + cospi_6_64 * x7); |
| s7 = (int)(cospi_6_64 * x6 - cospi_26_64 * x7); |
| |
| x0 = WRAPLOW(dct_const_round_shift(s0 + s4)); |
| x1 = WRAPLOW(dct_const_round_shift(s1 + s5)); |
| x2 = WRAPLOW(dct_const_round_shift(s2 + s6)); |
| x3 = WRAPLOW(dct_const_round_shift(s3 + s7)); |
| x4 = WRAPLOW(dct_const_round_shift(s0 - s4)); |
| x5 = WRAPLOW(dct_const_round_shift(s1 - s5)); |
| x6 = WRAPLOW(dct_const_round_shift(s2 - s6)); |
| x7 = WRAPLOW(dct_const_round_shift(s3 - s7)); |
| |
| // stage 2 |
| s0 = (int)x0; |
| s1 = (int)x1; |
| s2 = (int)x2; |
| s3 = (int)x3; |
| s4 = (int)(cospi_8_64 * x4 + cospi_24_64 * x5); |
| s5 = (int)(cospi_24_64 * x4 - cospi_8_64 * x5); |
| s6 = (int)(-cospi_24_64 * x6 + cospi_8_64 * x7); |
| s7 = (int)(cospi_8_64 * x6 + cospi_24_64 * x7); |
| |
| x0 = WRAPLOW(s0 + s2); |
| x1 = WRAPLOW(s1 + s3); |
| x2 = WRAPLOW(s0 - s2); |
| x3 = WRAPLOW(s1 - s3); |
| x4 = WRAPLOW(dct_const_round_shift(s4 + s6)); |
| x5 = WRAPLOW(dct_const_round_shift(s5 + s7)); |
| x6 = WRAPLOW(dct_const_round_shift(s4 - s6)); |
| x7 = WRAPLOW(dct_const_round_shift(s5 - s7)); |
| |
| // stage 3 |
| s2 = (int)(cospi_16_64 * (x2 + x3)); |
| s3 = (int)(cospi_16_64 * (x2 - x3)); |
| s6 = (int)(cospi_16_64 * (x6 + x7)); |
| s7 = (int)(cospi_16_64 * (x6 - x7)); |
| |
| x2 = WRAPLOW(dct_const_round_shift(s2)); |
| x3 = WRAPLOW(dct_const_round_shift(s3)); |
| x6 = WRAPLOW(dct_const_round_shift(s6)); |
| x7 = WRAPLOW(dct_const_round_shift(s7)); |
| |
| output[0] = WRAPLOW(x0); |
| output[1] = WRAPLOW(-x4); |
| output[2] = WRAPLOW(x6); |
| output[3] = WRAPLOW(-x2); |
| output[4] = WRAPLOW(x3); |
| output[5] = WRAPLOW(-x7); |
| output[6] = WRAPLOW(x5); |
| output[7] = WRAPLOW(-x1); |
| } |
| |
| void aom_idct8x8_12_add_c(const tran_low_t *input, uint8_t *dest, int stride) { |
| tran_low_t out[8 * 8] = { 0 }; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[8], temp_out[8]; |
| |
| // First transform rows |
| // only first 4 row has non-zero coefs |
| for (i = 0; i < 4; ++i) { |
| aom_idct8_c(input, outptr); |
| input += 8; |
| outptr += 8; |
| } |
| |
| // Then transform columns |
| for (i = 0; i < 8; ++i) { |
| for (j = 0; j < 8; ++j) temp_in[j] = out[j * 8 + i]; |
| aom_idct8_c(temp_in, temp_out); |
| for (j = 0; j < 8; ++j) { |
| dest[j * stride + i] = clip_pixel_add(dest[j * stride + i], |
| ROUND_POWER_OF_TWO(temp_out[j], 5)); |
| } |
| } |
| } |
| |
| void aom_idct16_c(const tran_low_t *input, tran_low_t *output) { |
| tran_low_t step1[16], step2[16]; |
| tran_high_t temp1, temp2; |
| |
| // stage 1 |
| step1[0] = input[0 / 2]; |
| step1[1] = input[16 / 2]; |
| step1[2] = input[8 / 2]; |
| step1[3] = input[24 / 2]; |
| step1[4] = input[4 / 2]; |
| step1[5] = input[20 / 2]; |
| step1[6] = input[12 / 2]; |
| step1[7] = input[28 / 2]; |
| step1[8] = input[2 / 2]; |
| step1[9] = input[18 / 2]; |
| step1[10] = input[10 / 2]; |
| step1[11] = input[26 / 2]; |
| step1[12] = input[6 / 2]; |
| step1[13] = input[22 / 2]; |
| step1[14] = input[14 / 2]; |
| step1[15] = input[30 / 2]; |
| |
| // stage 2 |
| step2[0] = step1[0]; |
| step2[1] = step1[1]; |
| step2[2] = step1[2]; |
| step2[3] = step1[3]; |
| step2[4] = step1[4]; |
| step2[5] = step1[5]; |
| step2[6] = step1[6]; |
| step2[7] = step1[7]; |
| |
| temp1 = step1[8] * cospi_30_64 - step1[15] * cospi_2_64; |
| temp2 = step1[8] * cospi_2_64 + step1[15] * cospi_30_64; |
| step2[8] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[15] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = step1[9] * cospi_14_64 - step1[14] * cospi_18_64; |
| temp2 = step1[9] * cospi_18_64 + step1[14] * cospi_14_64; |
| step2[9] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[14] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = step1[10] * cospi_22_64 - step1[13] * cospi_10_64; |
| temp2 = step1[10] * cospi_10_64 + step1[13] * cospi_22_64; |
| step2[10] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[13] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = step1[11] * cospi_6_64 - step1[12] * cospi_26_64; |
| temp2 = step1[11] * cospi_26_64 + step1[12] * cospi_6_64; |
| step2[11] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[12] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| // stage 3 |
| step1[0] = step2[0]; |
| step1[1] = step2[1]; |
| step1[2] = step2[2]; |
| step1[3] = step2[3]; |
| |
| temp1 = step2[4] * cospi_28_64 - step2[7] * cospi_4_64; |
| temp2 = step2[4] * cospi_4_64 + step2[7] * cospi_28_64; |
| step1[4] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[7] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = step2[5] * cospi_12_64 - step2[6] * cospi_20_64; |
| temp2 = step2[5] * cospi_20_64 + step2[6] * cospi_12_64; |
| step1[5] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[6] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| step1[8] = WRAPLOW(step2[8] + step2[9]); |
| step1[9] = WRAPLOW(step2[8] - step2[9]); |
| step1[10] = WRAPLOW(-step2[10] + step2[11]); |
| step1[11] = WRAPLOW(step2[10] + step2[11]); |
| step1[12] = WRAPLOW(step2[12] + step2[13]); |
| step1[13] = WRAPLOW(step2[12] - step2[13]); |
| step1[14] = WRAPLOW(-step2[14] + step2[15]); |
| step1[15] = WRAPLOW(step2[14] + step2[15]); |
| |
| // stage 4 |
| temp1 = (step1[0] + step1[1]) * cospi_16_64; |
| temp2 = (step1[0] - step1[1]) * cospi_16_64; |
| step2[0] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[1] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = step1[2] * cospi_24_64 - step1[3] * cospi_8_64; |
| temp2 = step1[2] * cospi_8_64 + step1[3] * cospi_24_64; |
| step2[2] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[3] = WRAPLOW(dct_const_round_shift(temp2)); |
| step2[4] = WRAPLOW(step1[4] + step1[5]); |
| step2[5] = WRAPLOW(step1[4] - step1[5]); |
| step2[6] = WRAPLOW(-step1[6] + step1[7]); |
| step2[7] = WRAPLOW(step1[6] + step1[7]); |
| |
| step2[8] = step1[8]; |
| step2[15] = step1[15]; |
| temp1 = -step1[9] * cospi_8_64 + step1[14] * cospi_24_64; |
| temp2 = step1[9] * cospi_24_64 + step1[14] * cospi_8_64; |
| step2[9] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[14] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = -step1[10] * cospi_24_64 - step1[13] * cospi_8_64; |
| temp2 = -step1[10] * cospi_8_64 + step1[13] * cospi_24_64; |
| step2[10] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[13] = WRAPLOW(dct_const_round_shift(temp2)); |
| step2[11] = step1[11]; |
| step2[12] = step1[12]; |
| |
| // stage 5 |
| step1[0] = WRAPLOW(step2[0] + step2[3]); |
| step1[1] = WRAPLOW(step2[1] + step2[2]); |
| step1[2] = WRAPLOW(step2[1] - step2[2]); |
| step1[3] = WRAPLOW(step2[0] - step2[3]); |
| step1[4] = step2[4]; |
| temp1 = (step2[6] - step2[5]) * cospi_16_64; |
| temp2 = (step2[5] + step2[6]) * cospi_16_64; |
| step1[5] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[6] = WRAPLOW(dct_const_round_shift(temp2)); |
| step1[7] = step2[7]; |
| |
| step1[8] = WRAPLOW(step2[8] + step2[11]); |
| step1[9] = WRAPLOW(step2[9] + step2[10]); |
| step1[10] = WRAPLOW(step2[9] - step2[10]); |
| step1[11] = WRAPLOW(step2[8] - step2[11]); |
| step1[12] = WRAPLOW(-step2[12] + step2[15]); |
| step1[13] = WRAPLOW(-step2[13] + step2[14]); |
| step1[14] = WRAPLOW(step2[13] + step2[14]); |
| step1[15] = WRAPLOW(step2[12] + step2[15]); |
| |
| // stage 6 |
| step2[0] = WRAPLOW(step1[0] + step1[7]); |
| step2[1] = WRAPLOW(step1[1] + step1[6]); |
| step2[2] = WRAPLOW(step1[2] + step1[5]); |
| step2[3] = WRAPLOW(step1[3] + step1[4]); |
| step2[4] = WRAPLOW(step1[3] - step1[4]); |
| step2[5] = WRAPLOW(step1[2] - step1[5]); |
| step2[6] = WRAPLOW(step1[1] - step1[6]); |
| step2[7] = WRAPLOW(step1[0] - step1[7]); |
| step2[8] = step1[8]; |
| step2[9] = step1[9]; |
| temp1 = (-step1[10] + step1[13]) * cospi_16_64; |
| temp2 = (step1[10] + step1[13]) * cospi_16_64; |
| step2[10] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[13] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = (-step1[11] + step1[12]) * cospi_16_64; |
| temp2 = (step1[11] + step1[12]) * cospi_16_64; |
| step2[11] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[12] = WRAPLOW(dct_const_round_shift(temp2)); |
| step2[14] = step1[14]; |
| step2[15] = step1[15]; |
| |
| // stage 7 |
| output[0] = WRAPLOW(step2[0] + step2[15]); |
| output[1] = WRAPLOW(step2[1] + step2[14]); |
| output[2] = WRAPLOW(step2[2] + step2[13]); |
| output[3] = WRAPLOW(step2[3] + step2[12]); |
| output[4] = WRAPLOW(step2[4] + step2[11]); |
| output[5] = WRAPLOW(step2[5] + step2[10]); |
| output[6] = WRAPLOW(step2[6] + step2[9]); |
| output[7] = WRAPLOW(step2[7] + step2[8]); |
| output[8] = WRAPLOW(step2[7] - step2[8]); |
| output[9] = WRAPLOW(step2[6] - step2[9]); |
| output[10] = WRAPLOW(step2[5] - step2[10]); |
| output[11] = WRAPLOW(step2[4] - step2[11]); |
| output[12] = WRAPLOW(step2[3] - step2[12]); |
| output[13] = WRAPLOW(step2[2] - step2[13]); |
| output[14] = WRAPLOW(step2[1] - step2[14]); |
| output[15] = WRAPLOW(step2[0] - step2[15]); |
| } |
| |
| void aom_idct16x16_256_add_c(const tran_low_t *input, uint8_t *dest, |
| int stride) { |
| tran_low_t out[16 * 16]; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[16], temp_out[16]; |
| |
| // First transform rows |
| for (i = 0; i < 16; ++i) { |
| aom_idct16_c(input, outptr); |
| input += 16; |
| outptr += 16; |
| } |
| |
| // Then transform columns |
| for (i = 0; i < 16; ++i) { |
| for (j = 0; j < 16; ++j) temp_in[j] = out[j * 16 + i]; |
| aom_idct16_c(temp_in, temp_out); |
| for (j = 0; j < 16; ++j) { |
| dest[j * stride + i] = clip_pixel_add(dest[j * stride + i], |
| ROUND_POWER_OF_TWO(temp_out[j], 6)); |
| } |
| } |
| } |
| |
| void aom_iadst16_c(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]; |
| |
| if (!(x0 | x1 | x2 | x3 | x4 | x5 | x6 | x7 | x8 | x9 | x10 | x11 | x12 | |
| x13 | x14 | x15)) { |
| output[0] = output[1] = output[2] = output[3] = output[4] = output[5] = |
| output[6] = output[7] = output[8] = output[9] = output[10] = |
| output[11] = output[12] = output[13] = output[14] = output[15] = 0; |
| return; |
| } |
| |
| // 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 = WRAPLOW(dct_const_round_shift(s0 + s8)); |
| x1 = WRAPLOW(dct_const_round_shift(s1 + s9)); |
| x2 = WRAPLOW(dct_const_round_shift(s2 + s10)); |
| x3 = WRAPLOW(dct_const_round_shift(s3 + s11)); |
| x4 = WRAPLOW(dct_const_round_shift(s4 + s12)); |
| x5 = WRAPLOW(dct_const_round_shift(s5 + s13)); |
| x6 = WRAPLOW(dct_const_round_shift(s6 + s14)); |
| x7 = WRAPLOW(dct_const_round_shift(s7 + s15)); |
| x8 = WRAPLOW(dct_const_round_shift(s0 - s8)); |
| x9 = WRAPLOW(dct_const_round_shift(s1 - s9)); |
| x10 = WRAPLOW(dct_const_round_shift(s2 - s10)); |
| x11 = WRAPLOW(dct_const_round_shift(s3 - s11)); |
| x12 = WRAPLOW(dct_const_round_shift(s4 - s12)); |
| x13 = WRAPLOW(dct_const_round_shift(s5 - s13)); |
| x14 = WRAPLOW(dct_const_round_shift(s6 - s14)); |
| x15 = WRAPLOW(dct_const_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 = WRAPLOW(s0 + s4); |
| x1 = WRAPLOW(s1 + s5); |
| x2 = WRAPLOW(s2 + s6); |
| x3 = WRAPLOW(s3 + s7); |
| x4 = WRAPLOW(s0 - s4); |
| x5 = WRAPLOW(s1 - s5); |
| x6 = WRAPLOW(s2 - s6); |
| x7 = WRAPLOW(s3 - s7); |
| x8 = WRAPLOW(dct_const_round_shift(s8 + s12)); |
| x9 = WRAPLOW(dct_const_round_shift(s9 + s13)); |
| x10 = WRAPLOW(dct_const_round_shift(s10 + s14)); |
| x11 = WRAPLOW(dct_const_round_shift(s11 + s15)); |
| x12 = WRAPLOW(dct_const_round_shift(s8 - s12)); |
| x13 = WRAPLOW(dct_const_round_shift(s9 - s13)); |
| x14 = WRAPLOW(dct_const_round_shift(s10 - s14)); |
| x15 = WRAPLOW(dct_const_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 = WRAPLOW(s0 + s2); |
| x1 = WRAPLOW(s1 + s3); |
| x2 = WRAPLOW(s0 - s2); |
| x3 = WRAPLOW(s1 - s3); |
| x4 = WRAPLOW(dct_const_round_shift(s4 + s6)); |
| x5 = WRAPLOW(dct_const_round_shift(s5 + s7)); |
| x6 = WRAPLOW(dct_const_round_shift(s4 - s6)); |
| x7 = WRAPLOW(dct_const_round_shift(s5 - s7)); |
| x8 = WRAPLOW(s8 + s10); |
| x9 = WRAPLOW(s9 + s11); |
| x10 = WRAPLOW(s8 - s10); |
| x11 = WRAPLOW(s9 - s11); |
| x12 = WRAPLOW(dct_const_round_shift(s12 + s14)); |
| x13 = WRAPLOW(dct_const_round_shift(s13 + s15)); |
| x14 = WRAPLOW(dct_const_round_shift(s12 - s14)); |
| x15 = WRAPLOW(dct_const_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 = WRAPLOW(dct_const_round_shift(s2)); |
| x3 = WRAPLOW(dct_const_round_shift(s3)); |
| x6 = WRAPLOW(dct_const_round_shift(s6)); |
| x7 = WRAPLOW(dct_const_round_shift(s7)); |
| x10 = WRAPLOW(dct_const_round_shift(s10)); |
| x11 = WRAPLOW(dct_const_round_shift(s11)); |
| x14 = WRAPLOW(dct_const_round_shift(s14)); |
| x15 = WRAPLOW(dct_const_round_shift(s15)); |
| |
| output[0] = WRAPLOW(x0); |
| output[1] = WRAPLOW(-x8); |
| output[2] = WRAPLOW(x12); |
| output[3] = WRAPLOW(-x4); |
| output[4] = WRAPLOW(x6); |
| output[5] = WRAPLOW(x14); |
| output[6] = WRAPLOW(x10); |
| output[7] = WRAPLOW(x2); |
| output[8] = WRAPLOW(x3); |
| output[9] = WRAPLOW(x11); |
| output[10] = WRAPLOW(x15); |
| output[11] = WRAPLOW(x7); |
| output[12] = WRAPLOW(x5); |
| output[13] = WRAPLOW(-x13); |
| output[14] = WRAPLOW(x9); |
| output[15] = WRAPLOW(-x1); |
| } |
| |
| void aom_idct16x16_10_add_c(const tran_low_t *input, uint8_t *dest, |
| int stride) { |
| tran_low_t out[16 * 16] = { 0 }; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[16], temp_out[16]; |
| |
| // First transform rows. Since all non-zero dct coefficients are in |
| // upper-left 4x4 area, we only need to calculate first 4 rows here. |
| for (i = 0; i < 4; ++i) { |
| aom_idct16_c(input, outptr); |
| input += 16; |
| outptr += 16; |
| } |
| |
| // Then transform columns |
| for (i = 0; i < 16; ++i) { |
| for (j = 0; j < 16; ++j) temp_in[j] = out[j * 16 + i]; |
| aom_idct16_c(temp_in, temp_out); |
| for (j = 0; j < 16; ++j) { |
| dest[j * stride + i] = clip_pixel_add(dest[j * stride + i], |
| ROUND_POWER_OF_TWO(temp_out[j], 6)); |
| } |
| } |
| } |
| |
| void aom_idct16x16_1_add_c(const tran_low_t *input, uint8_t *dest, int stride) { |
| int i, j; |
| tran_high_t a1; |
| tran_low_t out = WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64)); |
| out = WRAPLOW(dct_const_round_shift(out * cospi_16_64)); |
| a1 = ROUND_POWER_OF_TWO(out, 6); |
| for (j = 0; j < 16; ++j) { |
| for (i = 0; i < 16; ++i) dest[i] = clip_pixel_add(dest[i], a1); |
| dest += stride; |
| } |
| } |
| |
| void aom_idct32_c(const tran_low_t *input, tran_low_t *output) { |
| tran_low_t step1[32], step2[32]; |
| tran_high_t temp1, temp2; |
| |
| // stage 1 |
| step1[0] = input[0]; |
| step1[1] = input[16]; |
| step1[2] = input[8]; |
| step1[3] = input[24]; |
| step1[4] = input[4]; |
| step1[5] = input[20]; |
| step1[6] = input[12]; |
| step1[7] = input[28]; |
| step1[8] = input[2]; |
| step1[9] = input[18]; |
| step1[10] = input[10]; |
| step1[11] = input[26]; |
| step1[12] = input[6]; |
| step1[13] = input[22]; |
| step1[14] = input[14]; |
| step1[15] = input[30]; |
| |
| temp1 = input[1] * cospi_31_64 - input[31] * cospi_1_64; |
| temp2 = input[1] * cospi_1_64 + input[31] * cospi_31_64; |
| step1[16] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[31] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = input[17] * cospi_15_64 - input[15] * cospi_17_64; |
| temp2 = input[17] * cospi_17_64 + input[15] * cospi_15_64; |
| step1[17] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[30] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = input[9] * cospi_23_64 - input[23] * cospi_9_64; |
| temp2 = input[9] * cospi_9_64 + input[23] * cospi_23_64; |
| step1[18] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[29] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = input[25] * cospi_7_64 - input[7] * cospi_25_64; |
| temp2 = input[25] * cospi_25_64 + input[7] * cospi_7_64; |
| step1[19] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[28] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = input[5] * cospi_27_64 - input[27] * cospi_5_64; |
| temp2 = input[5] * cospi_5_64 + input[27] * cospi_27_64; |
| step1[20] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[27] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = input[21] * cospi_11_64 - input[11] * cospi_21_64; |
| temp2 = input[21] * cospi_21_64 + input[11] * cospi_11_64; |
| step1[21] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[26] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = input[13] * cospi_19_64 - input[19] * cospi_13_64; |
| temp2 = input[13] * cospi_13_64 + input[19] * cospi_19_64; |
| step1[22] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[25] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = input[29] * cospi_3_64 - input[3] * cospi_29_64; |
| temp2 = input[29] * cospi_29_64 + input[3] * cospi_3_64; |
| step1[23] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[24] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| // stage 2 |
| step2[0] = step1[0]; |
| step2[1] = step1[1]; |
| step2[2] = step1[2]; |
| step2[3] = step1[3]; |
| step2[4] = step1[4]; |
| step2[5] = step1[5]; |
| step2[6] = step1[6]; |
| step2[7] = step1[7]; |
| |
| temp1 = step1[8] * cospi_30_64 - step1[15] * cospi_2_64; |
| temp2 = step1[8] * cospi_2_64 + step1[15] * cospi_30_64; |
| step2[8] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[15] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = step1[9] * cospi_14_64 - step1[14] * cospi_18_64; |
| temp2 = step1[9] * cospi_18_64 + step1[14] * cospi_14_64; |
| step2[9] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[14] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = step1[10] * cospi_22_64 - step1[13] * cospi_10_64; |
| temp2 = step1[10] * cospi_10_64 + step1[13] * cospi_22_64; |
| step2[10] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[13] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| temp1 = step1[11] * cospi_6_64 - step1[12] * cospi_26_64; |
| temp2 = step1[11] * cospi_26_64 + step1[12] * cospi_6_64; |
| step2[11] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[12] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| step2[16] = WRAPLOW(step1[16] + step1[17]); |
| step2[17] = WRAPLOW(step1[16] - step1[17]); |
| step2[18] = WRAPLOW(-step1[18] + step1[19]); |
| step2[19] = WRAPLOW(step1[18] + step1[19]); |
| step2[20] = WRAPLOW(step1[20] + step1[21]); |
| step2[21] = WRAPLOW(step1[20] - step1[21]); |
| step2[22] = WRAPLOW(-step1[22] + step1[23]); |
| step2[23] = WRAPLOW(step1[22] + step1[23]); |
| step2[24] = WRAPLOW(step1[24] + step1[25]); |
| step2[25] = WRAPLOW(step1[24] - step1[25]); |
| step2[26] = WRAPLOW(-step1[26] + step1[27]); |
| step2[27] = WRAPLOW(step1[26] + step1[27]); |
| step2[28] = WRAPLOW(step1[28] + step1[29]); |
| step2[29] = WRAPLOW(step1[28] - step1[29]); |
| step2[30] = WRAPLOW(-step1[30] + step1[31]); |
| step2[31] = WRAPLOW(step1[30] + step1[31]); |
| |
| // stage 3 |
| step1[0] = step2[0]; |
| step1[1] = step2[1]; |
| step1[2] = step2[2]; |
| step1[3] = step2[3]; |
| |
| temp1 = step2[4] * cospi_28_64 - step2[7] * cospi_4_64; |
| temp2 = step2[4] * cospi_4_64 + step2[7] * cospi_28_64; |
| step1[4] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[7] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = step2[5] * cospi_12_64 - step2[6] * cospi_20_64; |
| temp2 = step2[5] * cospi_20_64 + step2[6] * cospi_12_64; |
| step1[5] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[6] = WRAPLOW(dct_const_round_shift(temp2)); |
| |
| step1[8] = WRAPLOW(step2[8] + step2[9]); |
| step1[9] = WRAPLOW(step2[8] - step2[9]); |
| step1[10] = WRAPLOW(-step2[10] + step2[11]); |
| step1[11] = WRAPLOW(step2[10] + step2[11]); |
| step1[12] = WRAPLOW(step2[12] + step2[13]); |
| step1[13] = WRAPLOW(step2[12] - step2[13]); |
| step1[14] = WRAPLOW(-step2[14] + step2[15]); |
| step1[15] = WRAPLOW(step2[14] + step2[15]); |
| |
| step1[16] = step2[16]; |
| step1[31] = step2[31]; |
| temp1 = -step2[17] * cospi_4_64 + step2[30] * cospi_28_64; |
| temp2 = step2[17] * cospi_28_64 + step2[30] * cospi_4_64; |
| step1[17] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[30] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = -step2[18] * cospi_28_64 - step2[29] * cospi_4_64; |
| temp2 = -step2[18] * cospi_4_64 + step2[29] * cospi_28_64; |
| step1[18] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[29] = WRAPLOW(dct_const_round_shift(temp2)); |
| step1[19] = step2[19]; |
| step1[20] = step2[20]; |
| temp1 = -step2[21] * cospi_20_64 + step2[26] * cospi_12_64; |
| temp2 = step2[21] * cospi_12_64 + step2[26] * cospi_20_64; |
| step1[21] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[26] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = -step2[22] * cospi_12_64 - step2[25] * cospi_20_64; |
| temp2 = -step2[22] * cospi_20_64 + step2[25] * cospi_12_64; |
| step1[22] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[25] = WRAPLOW(dct_const_round_shift(temp2)); |
| step1[23] = step2[23]; |
| step1[24] = step2[24]; |
| step1[27] = step2[27]; |
| step1[28] = step2[28]; |
| |
| // stage 4 |
| temp1 = (step1[0] + step1[1]) * cospi_16_64; |
| temp2 = (step1[0] - step1[1]) * cospi_16_64; |
| step2[0] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[1] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = step1[2] * cospi_24_64 - step1[3] * cospi_8_64; |
| temp2 = step1[2] * cospi_8_64 + step1[3] * cospi_24_64; |
| step2[2] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[3] = WRAPLOW(dct_const_round_shift(temp2)); |
| step2[4] = WRAPLOW(step1[4] + step1[5]); |
| step2[5] = WRAPLOW(step1[4] - step1[5]); |
| step2[6] = WRAPLOW(-step1[6] + step1[7]); |
| step2[7] = WRAPLOW(step1[6] + step1[7]); |
| |
| step2[8] = step1[8]; |
| step2[15] = step1[15]; |
| temp1 = -step1[9] * cospi_8_64 + step1[14] * cospi_24_64; |
| temp2 = step1[9] * cospi_24_64 + step1[14] * cospi_8_64; |
| step2[9] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[14] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = -step1[10] * cospi_24_64 - step1[13] * cospi_8_64; |
| temp2 = -step1[10] * cospi_8_64 + step1[13] * cospi_24_64; |
| step2[10] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[13] = WRAPLOW(dct_const_round_shift(temp2)); |
| step2[11] = step1[11]; |
| step2[12] = step1[12]; |
| |
| step2[16] = WRAPLOW(step1[16] + step1[19]); |
| step2[17] = WRAPLOW(step1[17] + step1[18]); |
| step2[18] = WRAPLOW(step1[17] - step1[18]); |
| step2[19] = WRAPLOW(step1[16] - step1[19]); |
| step2[20] = WRAPLOW(-step1[20] + step1[23]); |
| step2[21] = WRAPLOW(-step1[21] + step1[22]); |
| step2[22] = WRAPLOW(step1[21] + step1[22]); |
| step2[23] = WRAPLOW(step1[20] + step1[23]); |
| |
| step2[24] = WRAPLOW(step1[24] + step1[27]); |
| step2[25] = WRAPLOW(step1[25] + step1[26]); |
| step2[26] = WRAPLOW(step1[25] - step1[26]); |
| step2[27] = WRAPLOW(step1[24] - step1[27]); |
| step2[28] = WRAPLOW(-step1[28] + step1[31]); |
| step2[29] = WRAPLOW(-step1[29] + step1[30]); |
| step2[30] = WRAPLOW(step1[29] + step1[30]); |
| step2[31] = WRAPLOW(step1[28] + step1[31]); |
| |
| // stage 5 |
| step1[0] = WRAPLOW(step2[0] + step2[3]); |
| step1[1] = WRAPLOW(step2[1] + step2[2]); |
| step1[2] = WRAPLOW(step2[1] - step2[2]); |
| step1[3] = WRAPLOW(step2[0] - step2[3]); |
| step1[4] = step2[4]; |
| temp1 = (step2[6] - step2[5]) * cospi_16_64; |
| temp2 = (step2[5] + step2[6]) * cospi_16_64; |
| step1[5] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[6] = WRAPLOW(dct_const_round_shift(temp2)); |
| step1[7] = step2[7]; |
| |
| step1[8] = WRAPLOW(step2[8] + step2[11]); |
| step1[9] = WRAPLOW(step2[9] + step2[10]); |
| step1[10] = WRAPLOW(step2[9] - step2[10]); |
| step1[11] = WRAPLOW(step2[8] - step2[11]); |
| step1[12] = WRAPLOW(-step2[12] + step2[15]); |
| step1[13] = WRAPLOW(-step2[13] + step2[14]); |
| step1[14] = WRAPLOW(step2[13] + step2[14]); |
| step1[15] = WRAPLOW(step2[12] + step2[15]); |
| |
| step1[16] = step2[16]; |
| step1[17] = step2[17]; |
| temp1 = -step2[18] * cospi_8_64 + step2[29] * cospi_24_64; |
| temp2 = step2[18] * cospi_24_64 + step2[29] * cospi_8_64; |
| step1[18] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[29] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = -step2[19] * cospi_8_64 + step2[28] * cospi_24_64; |
| temp2 = step2[19] * cospi_24_64 + step2[28] * cospi_8_64; |
| step1[19] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[28] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = -step2[20] * cospi_24_64 - step2[27] * cospi_8_64; |
| temp2 = -step2[20] * cospi_8_64 + step2[27] * cospi_24_64; |
| step1[20] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[27] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = -step2[21] * cospi_24_64 - step2[26] * cospi_8_64; |
| temp2 = -step2[21] * cospi_8_64 + step2[26] * cospi_24_64; |
| step1[21] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[26] = WRAPLOW(dct_const_round_shift(temp2)); |
| step1[22] = step2[22]; |
| step1[23] = step2[23]; |
| step1[24] = step2[24]; |
| step1[25] = step2[25]; |
| step1[30] = step2[30]; |
| step1[31] = step2[31]; |
| |
| // stage 6 |
| step2[0] = WRAPLOW(step1[0] + step1[7]); |
| step2[1] = WRAPLOW(step1[1] + step1[6]); |
| step2[2] = WRAPLOW(step1[2] + step1[5]); |
| step2[3] = WRAPLOW(step1[3] + step1[4]); |
| step2[4] = WRAPLOW(step1[3] - step1[4]); |
| step2[5] = WRAPLOW(step1[2] - step1[5]); |
| step2[6] = WRAPLOW(step1[1] - step1[6]); |
| step2[7] = WRAPLOW(step1[0] - step1[7]); |
| step2[8] = step1[8]; |
| step2[9] = step1[9]; |
| temp1 = (-step1[10] + step1[13]) * cospi_16_64; |
| temp2 = (step1[10] + step1[13]) * cospi_16_64; |
| step2[10] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[13] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = (-step1[11] + step1[12]) * cospi_16_64; |
| temp2 = (step1[11] + step1[12]) * cospi_16_64; |
| step2[11] = WRAPLOW(dct_const_round_shift(temp1)); |
| step2[12] = WRAPLOW(dct_const_round_shift(temp2)); |
| step2[14] = step1[14]; |
| step2[15] = step1[15]; |
| |
| step2[16] = WRAPLOW(step1[16] + step1[23]); |
| step2[17] = WRAPLOW(step1[17] + step1[22]); |
| step2[18] = WRAPLOW(step1[18] + step1[21]); |
| step2[19] = WRAPLOW(step1[19] + step1[20]); |
| step2[20] = WRAPLOW(step1[19] - step1[20]); |
| step2[21] = WRAPLOW(step1[18] - step1[21]); |
| step2[22] = WRAPLOW(step1[17] - step1[22]); |
| step2[23] = WRAPLOW(step1[16] - step1[23]); |
| |
| step2[24] = WRAPLOW(-step1[24] + step1[31]); |
| step2[25] = WRAPLOW(-step1[25] + step1[30]); |
| step2[26] = WRAPLOW(-step1[26] + step1[29]); |
| step2[27] = WRAPLOW(-step1[27] + step1[28]); |
| step2[28] = WRAPLOW(step1[27] + step1[28]); |
| step2[29] = WRAPLOW(step1[26] + step1[29]); |
| step2[30] = WRAPLOW(step1[25] + step1[30]); |
| step2[31] = WRAPLOW(step1[24] + step1[31]); |
| |
| // stage 7 |
| step1[0] = WRAPLOW(step2[0] + step2[15]); |
| step1[1] = WRAPLOW(step2[1] + step2[14]); |
| step1[2] = WRAPLOW(step2[2] + step2[13]); |
| step1[3] = WRAPLOW(step2[3] + step2[12]); |
| step1[4] = WRAPLOW(step2[4] + step2[11]); |
| step1[5] = WRAPLOW(step2[5] + step2[10]); |
| step1[6] = WRAPLOW(step2[6] + step2[9]); |
| step1[7] = WRAPLOW(step2[7] + step2[8]); |
| step1[8] = WRAPLOW(step2[7] - step2[8]); |
| step1[9] = WRAPLOW(step2[6] - step2[9]); |
| step1[10] = WRAPLOW(step2[5] - step2[10]); |
| step1[11] = WRAPLOW(step2[4] - step2[11]); |
| step1[12] = WRAPLOW(step2[3] - step2[12]); |
| step1[13] = WRAPLOW(step2[2] - step2[13]); |
| step1[14] = WRAPLOW(step2[1] - step2[14]); |
| step1[15] = WRAPLOW(step2[0] - step2[15]); |
| |
| step1[16] = step2[16]; |
| step1[17] = step2[17]; |
| step1[18] = step2[18]; |
| step1[19] = step2[19]; |
| temp1 = (-step2[20] + step2[27]) * cospi_16_64; |
| temp2 = (step2[20] + step2[27]) * cospi_16_64; |
| step1[20] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[27] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = (-step2[21] + step2[26]) * cospi_16_64; |
| temp2 = (step2[21] + step2[26]) * cospi_16_64; |
| step1[21] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[26] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = (-step2[22] + step2[25]) * cospi_16_64; |
| temp2 = (step2[22] + step2[25]) * cospi_16_64; |
| step1[22] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[25] = WRAPLOW(dct_const_round_shift(temp2)); |
| temp1 = (-step2[23] + step2[24]) * cospi_16_64; |
| temp2 = (step2[23] + step2[24]) * cospi_16_64; |
| step1[23] = WRAPLOW(dct_const_round_shift(temp1)); |
| step1[24] = WRAPLOW(dct_const_round_shift(temp2)); |
| step1[28] = step2[28]; |
| step1[29] = step2[29]; |
| step1[30] = step2[30]; |
| step1[31] = step2[31]; |
| |
| // final stage |
| output[0] = WRAPLOW(step1[0] + step1[31]); |
| output[1] = WRAPLOW(step1[1] + step1[30]); |
| output[2] = WRAPLOW(step1[2] + step1[29]); |
| output[3] = WRAPLOW(step1[3] + step1[28]); |
| output[4] = WRAPLOW(step1[4] + step1[27]); |
| output[5] = WRAPLOW(step1[5] + step1[26]); |
| output[6] = WRAPLOW(step1[6] + step1[25]); |
| output[7] = WRAPLOW(step1[7] + step1[24]); |
| output[8] = WRAPLOW(step1[8] + step1[23]); |
| output[9] = WRAPLOW(step1[9] + step1[22]); |
| output[10] = WRAPLOW(step1[10] + step1[21]); |
| output[11] = WRAPLOW(step1[11] + step1[20]); |
| output[12] = WRAPLOW(step1[12] + step1[19]); |
| output[13] = WRAPLOW(step1[13] + step1[18]); |
| output[14] = WRAPLOW(step1[14] + step1[17]); |
| output[15] = WRAPLOW(step1[15] + step1[16]); |
| output[16] = WRAPLOW(step1[15] - step1[16]); |
| output[17] = WRAPLOW(step1[14] - step1[17]); |
| output[18] = WRAPLOW(step1[13] - step1[18]); |
| output[19] = WRAPLOW(step1[12] - step1[19]); |
| output[20] = WRAPLOW(step1[11] - step1[20]); |
| output[21] = WRAPLOW(step1[10] - step1[21]); |
| output[22] = WRAPLOW(step1[9] - step1[22]); |
| output[23] = WRAPLOW(step1[8] - step1[23]); |
| output[24] = WRAPLOW(step1[7] - step1[24]); |
| output[25] = WRAPLOW(step1[6] - step1[25]); |
| output[26] = WRAPLOW(step1[5] - step1[26]); |
| output[27] = WRAPLOW(step1[4] - step1[27]); |
| output[28] = WRAPLOW(step1[3] - step1[28]); |
| output[29] = WRAPLOW(step1[2] - step1[29]); |
| output[30] = WRAPLOW(step1[1] - step1[30]); |
| output[31] = WRAPLOW(step1[0] - step1[31]); |
| } |
| |
| void aom_idct32x32_1024_add_c(const tran_low_t *input, uint8_t *dest, |
| int stride) { |
| tran_low_t out[32 * 32]; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[32], temp_out[32]; |
| |
| // Rows |
| for (i = 0; i < 32; ++i) { |
| int16_t zero_coeff[16]; |
| for (j = 0; j < 16; ++j) zero_coeff[j] = input[2 * j] | input[2 * j + 1]; |
| for (j = 0; j < 8; ++j) |
| zero_coeff[j] = zero_coeff[2 * j] | zero_coeff[2 * j + 1]; |
| for (j = 0; j < 4; ++j) |
| zero_coeff[j] = zero_coeff[2 * j] | zero_coeff[2 * j + 1]; |
| for (j = 0; j < 2; ++j) |
| zero_coeff[j] = zero_coeff[2 * j] | zero_coeff[2 * j + 1]; |
| |
| if (zero_coeff[0] | zero_coeff[1]) |
| aom_idct32_c(input, outptr); |
| else |
| memset(outptr, 0, sizeof(tran_low_t) * 32); |
| input += 32; |
| outptr += 32; |
| } |
| |
| // Columns |
| for (i = 0; i < 32; ++i) { |
| for (j = 0; j < 32; ++j) temp_in[j] = out[j * 32 + i]; |
| aom_idct32_c(temp_in, temp_out); |
| for (j = 0; j < 32; ++j) { |
| dest[j * stride + i] = clip_pixel_add(dest[j * stride + i], |
| ROUND_POWER_OF_TWO(temp_out[j], 6)); |
| } |
| } |
| } |
| |
| void aom_idct32x32_135_add_c(const tran_low_t *input, uint8_t *dest, |
| int stride) { |
| tran_low_t out[32 * 32] = { 0 }; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[32], temp_out[32]; |
| |
| // Rows |
| // only upper-left 16x16 has non-zero coeff |
| for (i = 0; i < 16; ++i) { |
| aom_idct32_c(input, outptr); |
| input += 32; |
| outptr += 32; |
| } |
| |
| // Columns |
| for (i = 0; i < 32; ++i) { |
| for (j = 0; j < 32; ++j) temp_in[j] = out[j * 32 + i]; |
| aom_idct32_c(temp_in, temp_out); |
| for (j = 0; j < 32; ++j) { |
| dest[j * stride + i] = clip_pixel_add(dest[j * stride + i], |
| ROUND_POWER_OF_TWO(temp_out[j], 6)); |
| } |
| } |
| } |
| |
| void aom_idct32x32_34_add_c(const tran_low_t *input, uint8_t *dest, |
| int stride) { |
| tran_low_t out[32 * 32] = { 0 }; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[32], temp_out[32]; |
| |
| // Rows |
| // only upper-left 8x8 has non-zero coeff |
| for (i = 0; i < 8; ++i) { |
| aom_idct32_c(input, outptr); |
| input += 32; |
| outptr += 32; |
| } |
| |
| // Columns |
| for (i = 0; i < 32; ++i) { |
| for (j = 0; j < 32; ++j) temp_in[j] = out[j * 32 + i]; |
| aom_idct32_c(temp_in, temp_out); |
| for (j = 0; j < 32; ++j) { |
| dest[j * stride + i] = clip_pixel_add(dest[j * stride + i], |
| ROUND_POWER_OF_TWO(temp_out[j], 6)); |
| } |
| } |
| } |
| |
| void aom_idct32x32_1_add_c(const tran_low_t *input, uint8_t *dest, int stride) { |
| int i, j; |
| tran_high_t a1; |
| |
| tran_low_t out = WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64)); |
| out = WRAPLOW(dct_const_round_shift(out * cospi_16_64)); |
| a1 = ROUND_POWER_OF_TWO(out, 6); |
| |
| for (j = 0; j < 32; ++j) { |
| for (i = 0; i < 32; ++i) dest[i] = clip_pixel_add(dest[i], a1); |
| dest += stride; |
| } |
| } |
| |
| #if CONFIG_AOM_HIGHBITDEPTH |
| void aom_highbd_iwht4x4_16_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int bd) { |
| /* 4-point reversible, orthonormal inverse Walsh-Hadamard in 3.5 adds, |
| 0.5 shifts per pixel. */ |
| int i; |
| tran_low_t output[16]; |
| tran_high_t a1, b1, c1, d1, e1; |
| const tran_low_t *ip = input; |
| tran_low_t *op = output; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| for (i = 0; i < 4; i++) { |
| a1 = ip[0] >> UNIT_QUANT_SHIFT; |
| c1 = ip[1] >> UNIT_QUANT_SHIFT; |
| d1 = ip[2] >> UNIT_QUANT_SHIFT; |
| b1 = ip[3] >> UNIT_QUANT_SHIFT; |
| a1 += c1; |
| d1 -= b1; |
| e1 = (a1 - d1) >> 1; |
| b1 = e1 - b1; |
| c1 = e1 - c1; |
| a1 -= b1; |
| d1 += c1; |
| op[0] = HIGHBD_WRAPLOW(a1, bd); |
| op[1] = HIGHBD_WRAPLOW(b1, bd); |
| op[2] = HIGHBD_WRAPLOW(c1, bd); |
| op[3] = HIGHBD_WRAPLOW(d1, bd); |
| ip += 4; |
| op += 4; |
| } |
| |
| ip = output; |
| for (i = 0; i < 4; i++) { |
| a1 = ip[4 * 0]; |
| c1 = ip[4 * 1]; |
| d1 = ip[4 * 2]; |
| b1 = ip[4 * 3]; |
| a1 += c1; |
| d1 -= b1; |
| e1 = (a1 - d1) >> 1; |
| b1 = e1 - b1; |
| c1 = e1 - c1; |
| a1 -= b1; |
| d1 += c1; |
| dest[stride * 0] = |
| highbd_clip_pixel_add(dest[stride * 0], HIGHBD_WRAPLOW(a1, bd), bd); |
| dest[stride * 1] = |
| highbd_clip_pixel_add(dest[stride * 1], HIGHBD_WRAPLOW(b1, bd), bd); |
| dest[stride * 2] = |
| highbd_clip_pixel_add(dest[stride * 2], HIGHBD_WRAPLOW(c1, bd), bd); |
| dest[stride * 3] = |
| highbd_clip_pixel_add(dest[stride * 3], HIGHBD_WRAPLOW(d1, bd), bd); |
| |
| ip++; |
| dest++; |
| } |
| } |
| |
| void aom_highbd_iwht4x4_1_add_c(const tran_low_t *in, uint8_t *dest8, |
| int dest_stride, int bd) { |
| int i; |
| tran_high_t a1, e1; |
| tran_low_t tmp[4]; |
| const tran_low_t *ip = in; |
| tran_low_t *op = tmp; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| (void)bd; |
| |
| a1 = ip[0] >> UNIT_QUANT_SHIFT; |
| e1 = a1 >> 1; |
| a1 -= e1; |
| op[0] = HIGHBD_WRAPLOW(a1, bd); |
| op[1] = op[2] = op[3] = HIGHBD_WRAPLOW(e1, bd); |
| |
| ip = tmp; |
| for (i = 0; i < 4; i++) { |
| e1 = ip[0] >> 1; |
| a1 = ip[0] - e1; |
| dest[dest_stride * 0] = |
| highbd_clip_pixel_add(dest[dest_stride * 0], a1, bd); |
| dest[dest_stride * 1] = |
| highbd_clip_pixel_add(dest[dest_stride * 1], e1, bd); |
| dest[dest_stride * 2] = |
| highbd_clip_pixel_add(dest[dest_stride * 2], e1, bd); |
| dest[dest_stride * 3] = |
| highbd_clip_pixel_add(dest[dest_stride * 3], e1, bd); |
| ip++; |
| dest++; |
| } |
| } |
| |
| void aom_highbd_idct4_c(const tran_low_t *input, tran_low_t *output, int bd) { |
| tran_low_t step[4]; |
| tran_high_t temp1, temp2; |
| (void)bd; |
| // stage 1 |
| temp1 = (input[0] + input[2]) * cospi_16_64; |
| temp2 = (input[0] - input[2]) * cospi_16_64; |
| step[0] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step[1] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = input[1] * cospi_24_64 - input[3] * cospi_8_64; |
| temp2 = input[1] * cospi_8_64 + input[3] * cospi_24_64; |
| step[2] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step[3] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| // stage 2 |
| output[0] = HIGHBD_WRAPLOW(step[0] + step[3], bd); |
| output[1] = HIGHBD_WRAPLOW(step[1] + step[2], bd); |
| output[2] = HIGHBD_WRAPLOW(step[1] - step[2], bd); |
| output[3] = HIGHBD_WRAPLOW(step[0] - step[3], bd); |
| } |
| |
| void aom_highbd_idct4x4_16_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int bd) { |
| tran_low_t out[4 * 4]; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[4], temp_out[4]; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| // Rows |
| for (i = 0; i < 4; ++i) { |
| aom_highbd_idct4_c(input, outptr, bd); |
| input += 4; |
| outptr += 4; |
| } |
| |
| // Columns |
| for (i = 0; i < 4; ++i) { |
| for (j = 0; j < 4; ++j) temp_in[j] = out[j * 4 + i]; |
| aom_highbd_idct4_c(temp_in, temp_out, bd); |
| for (j = 0; j < 4; ++j) { |
| dest[j * stride + i] = highbd_clip_pixel_add( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 4), bd); |
| } |
| } |
| } |
| |
| void aom_highbd_idct4x4_1_add_c(const tran_low_t *input, uint8_t *dest8, |
| int dest_stride, int bd) { |
| int i; |
| tran_high_t a1; |
| tran_low_t out = |
| HIGHBD_WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64), bd); |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| out = HIGHBD_WRAPLOW(dct_const_round_shift(out * cospi_16_64), bd); |
| a1 = ROUND_POWER_OF_TWO(out, 4); |
| |
| for (i = 0; i < 4; i++) { |
| dest[0] = highbd_clip_pixel_add(dest[0], a1, bd); |
| dest[1] = highbd_clip_pixel_add(dest[1], a1, bd); |
| dest[2] = highbd_clip_pixel_add(dest[2], a1, bd); |
| dest[3] = highbd_clip_pixel_add(dest[3], a1, bd); |
| dest += dest_stride; |
| } |
| } |
| |
| void aom_highbd_idct8_c(const tran_low_t *input, tran_low_t *output, int bd) { |
| tran_low_t step1[8], step2[8]; |
| tran_high_t temp1, temp2; |
| // stage 1 |
| step1[0] = input[0]; |
| step1[2] = input[4]; |
| step1[1] = input[2]; |
| step1[3] = input[6]; |
| temp1 = input[1] * cospi_28_64 - input[7] * cospi_4_64; |
| temp2 = input[1] * cospi_4_64 + input[7] * cospi_28_64; |
| step1[4] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[7] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = input[5] * cospi_12_64 - input[3] * cospi_20_64; |
| temp2 = input[5] * cospi_20_64 + input[3] * cospi_12_64; |
| step1[5] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[6] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| // stage 2 & stage 3 - even half |
| aom_highbd_idct4_c(step1, step1, bd); |
| |
| // stage 2 - odd half |
| step2[4] = HIGHBD_WRAPLOW(step1[4] + step1[5], bd); |
| step2[5] = HIGHBD_WRAPLOW(step1[4] - step1[5], bd); |
| step2[6] = HIGHBD_WRAPLOW(-step1[6] + step1[7], bd); |
| step2[7] = HIGHBD_WRAPLOW(step1[6] + step1[7], bd); |
| |
| // stage 3 - odd half |
| step1[4] = step2[4]; |
| temp1 = (step2[6] - step2[5]) * cospi_16_64; |
| temp2 = (step2[5] + step2[6]) * cospi_16_64; |
| step1[5] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[6] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step1[7] = step2[7]; |
| |
| // stage 4 |
| output[0] = HIGHBD_WRAPLOW(step1[0] + step1[7], bd); |
| output[1] = HIGHBD_WRAPLOW(step1[1] + step1[6], bd); |
| output[2] = HIGHBD_WRAPLOW(step1[2] + step1[5], bd); |
| output[3] = HIGHBD_WRAPLOW(step1[3] + step1[4], bd); |
| output[4] = HIGHBD_WRAPLOW(step1[3] - step1[4], bd); |
| output[5] = HIGHBD_WRAPLOW(step1[2] - step1[5], bd); |
| output[6] = HIGHBD_WRAPLOW(step1[1] - step1[6], bd); |
| output[7] = HIGHBD_WRAPLOW(step1[0] - step1[7], bd); |
| } |
| |
| void aom_highbd_idct8x8_64_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int bd) { |
| tran_low_t out[8 * 8]; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[8], temp_out[8]; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| // First transform rows. |
| for (i = 0; i < 8; ++i) { |
| aom_highbd_idct8_c(input, outptr, bd); |
| input += 8; |
| outptr += 8; |
| } |
| |
| // Then transform columns. |
| for (i = 0; i < 8; ++i) { |
| for (j = 0; j < 8; ++j) temp_in[j] = out[j * 8 + i]; |
| aom_highbd_idct8_c(temp_in, temp_out, bd); |
| for (j = 0; j < 8; ++j) { |
| dest[j * stride + i] = highbd_clip_pixel_add( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 5), bd); |
| } |
| } |
| } |
| |
| void aom_highbd_idct8x8_1_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int bd) { |
| int i, j; |
| tran_high_t a1; |
| tran_low_t out = |
| HIGHBD_WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64), bd); |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| out = HIGHBD_WRAPLOW(dct_const_round_shift(out * cospi_16_64), bd); |
| a1 = ROUND_POWER_OF_TWO(out, 5); |
| for (j = 0; j < 8; ++j) { |
| for (i = 0; i < 8; ++i) dest[i] = highbd_clip_pixel_add(dest[i], a1, bd); |
| dest += stride; |
| } |
| } |
| |
| void aom_highbd_iadst4_c(const tran_low_t *input, tran_low_t *output, int bd) { |
| tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; |
| |
| tran_low_t x0 = input[0]; |
| tran_low_t x1 = input[1]; |
| tran_low_t x2 = input[2]; |
| tran_low_t x3 = input[3]; |
| (void)bd; |
| |
| if (!(x0 | x1 | x2 | x3)) { |
| memset(output, 0, 4 * sizeof(*output)); |
| return; |
| } |
| |
| s0 = sinpi_1_9 * x0; |
| s1 = sinpi_2_9 * x0; |
| s2 = sinpi_3_9 * x1; |
| s3 = sinpi_4_9 * x2; |
| s4 = sinpi_1_9 * x2; |
| s5 = sinpi_2_9 * x3; |
| s6 = sinpi_4_9 * x3; |
| s7 = (tran_high_t)HIGHBD_WRAPLOW(x0 - x2 + x3, bd); |
| |
| s0 = s0 + s3 + s5; |
| s1 = s1 - s4 - s6; |
| s3 = s2; |
| s2 = sinpi_3_9 * s7; |
| |
| // 1-D transform scaling factor is sqrt(2). |
| // The overall dynamic range is 14b (input) + 14b (multiplication scaling) |
| // + 1b (addition) = 29b. |
| // Hence the output bit depth is 15b. |
| output[0] = HIGHBD_WRAPLOW(dct_const_round_shift(s0 + s3), bd); |
| output[1] = HIGHBD_WRAPLOW(dct_const_round_shift(s1 + s3), bd); |
| output[2] = HIGHBD_WRAPLOW(dct_const_round_shift(s2), bd); |
| output[3] = HIGHBD_WRAPLOW(dct_const_round_shift(s0 + s1 - s3), bd); |
| } |
| |
| void aom_highbd_iadst8_c(const tran_low_t *input, tran_low_t *output, int bd) { |
| tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; |
| |
| tran_low_t x0 = input[7]; |
| tran_low_t x1 = input[0]; |
| tran_low_t x2 = input[5]; |
| tran_low_t x3 = input[2]; |
| tran_low_t x4 = input[3]; |
| tran_low_t x5 = input[4]; |
| tran_low_t x6 = input[1]; |
| tran_low_t x7 = input[6]; |
| (void)bd; |
| |
| if (!(x0 | x1 | x2 | x3 | x4 | x5 | x6 | x7)) { |
| memset(output, 0, 8 * sizeof(*output)); |
| return; |
| } |
| |
| // 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 = HIGHBD_WRAPLOW(dct_const_round_shift(s0 + s4), bd); |
| x1 = HIGHBD_WRAPLOW(dct_const_round_shift(s1 + s5), bd); |
| x2 = HIGHBD_WRAPLOW(dct_const_round_shift(s2 + s6), bd); |
| x3 = HIGHBD_WRAPLOW(dct_const_round_shift(s3 + s7), bd); |
| x4 = HIGHBD_WRAPLOW(dct_const_round_shift(s0 - s4), bd); |
| x5 = HIGHBD_WRAPLOW(dct_const_round_shift(s1 - s5), bd); |
| x6 = HIGHBD_WRAPLOW(dct_const_round_shift(s2 - s6), bd); |
| x7 = HIGHBD_WRAPLOW(dct_const_round_shift(s3 - s7), bd); |
| |
| // 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 = HIGHBD_WRAPLOW(s0 + s2, bd); |
| x1 = HIGHBD_WRAPLOW(s1 + s3, bd); |
| x2 = HIGHBD_WRAPLOW(s0 - s2, bd); |
| x3 = HIGHBD_WRAPLOW(s1 - s3, bd); |
| x4 = HIGHBD_WRAPLOW(dct_const_round_shift(s4 + s6), bd); |
| x5 = HIGHBD_WRAPLOW(dct_const_round_shift(s5 + s7), bd); |
| x6 = HIGHBD_WRAPLOW(dct_const_round_shift(s4 - s6), bd); |
| x7 = HIGHBD_WRAPLOW(dct_const_round_shift(s5 - s7), bd); |
| |
| // 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 = HIGHBD_WRAPLOW(dct_const_round_shift(s2), bd); |
| x3 = HIGHBD_WRAPLOW(dct_const_round_shift(s3), bd); |
| x6 = HIGHBD_WRAPLOW(dct_const_round_shift(s6), bd); |
| x7 = HIGHBD_WRAPLOW(dct_const_round_shift(s7), bd); |
| |
| output[0] = HIGHBD_WRAPLOW(x0, bd); |
| output[1] = HIGHBD_WRAPLOW(-x4, bd); |
| output[2] = HIGHBD_WRAPLOW(x6, bd); |
| output[3] = HIGHBD_WRAPLOW(-x2, bd); |
| output[4] = HIGHBD_WRAPLOW(x3, bd); |
| output[5] = HIGHBD_WRAPLOW(-x7, bd); |
| output[6] = HIGHBD_WRAPLOW(x5, bd); |
| output[7] = HIGHBD_WRAPLOW(-x1, bd); |
| } |
| |
| void aom_highbd_idct8x8_10_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int bd) { |
| tran_low_t out[8 * 8] = { 0 }; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[8], temp_out[8]; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| // First transform rows. |
| // Only first 4 row has non-zero coefs. |
| for (i = 0; i < 4; ++i) { |
| aom_highbd_idct8_c(input, outptr, bd); |
| input += 8; |
| outptr += 8; |
| } |
| // Then transform columns. |
| for (i = 0; i < 8; ++i) { |
| for (j = 0; j < 8; ++j) temp_in[j] = out[j * 8 + i]; |
| aom_highbd_idct8_c(temp_in, temp_out, bd); |
| for (j = 0; j < 8; ++j) { |
| dest[j * stride + i] = highbd_clip_pixel_add( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 5), bd); |
| } |
| } |
| } |
| |
| void aom_highbd_idct16_c(const tran_low_t *input, tran_low_t *output, int bd) { |
| tran_low_t step1[16], step2[16]; |
| tran_high_t temp1, temp2; |
| (void)bd; |
| |
| // stage 1 |
| step1[0] = input[0 / 2]; |
| step1[1] = input[16 / 2]; |
| step1[2] = input[8 / 2]; |
| step1[3] = input[24 / 2]; |
| step1[4] = input[4 / 2]; |
| step1[5] = input[20 / 2]; |
| step1[6] = input[12 / 2]; |
| step1[7] = input[28 / 2]; |
| step1[8] = input[2 / 2]; |
| step1[9] = input[18 / 2]; |
| step1[10] = input[10 / 2]; |
| step1[11] = input[26 / 2]; |
| step1[12] = input[6 / 2]; |
| step1[13] = input[22 / 2]; |
| step1[14] = input[14 / 2]; |
| step1[15] = input[30 / 2]; |
| |
| // stage 2 |
| step2[0] = step1[0]; |
| step2[1] = step1[1]; |
| step2[2] = step1[2]; |
| step2[3] = step1[3]; |
| step2[4] = step1[4]; |
| step2[5] = step1[5]; |
| step2[6] = step1[6]; |
| step2[7] = step1[7]; |
| |
| temp1 = step1[8] * cospi_30_64 - step1[15] * cospi_2_64; |
| temp2 = step1[8] * cospi_2_64 + step1[15] * cospi_30_64; |
| step2[8] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[15] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = step1[9] * cospi_14_64 - step1[14] * cospi_18_64; |
| temp2 = step1[9] * cospi_18_64 + step1[14] * cospi_14_64; |
| step2[9] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[14] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = step1[10] * cospi_22_64 - step1[13] * cospi_10_64; |
| temp2 = step1[10] * cospi_10_64 + step1[13] * cospi_22_64; |
| step2[10] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[13] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = step1[11] * cospi_6_64 - step1[12] * cospi_26_64; |
| temp2 = step1[11] * cospi_26_64 + step1[12] * cospi_6_64; |
| step2[11] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[12] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| // stage 3 |
| step1[0] = step2[0]; |
| step1[1] = step2[1]; |
| step1[2] = step2[2]; |
| step1[3] = step2[3]; |
| |
| temp1 = step2[4] * cospi_28_64 - step2[7] * cospi_4_64; |
| temp2 = step2[4] * cospi_4_64 + step2[7] * cospi_28_64; |
| step1[4] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[7] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = step2[5] * cospi_12_64 - step2[6] * cospi_20_64; |
| temp2 = step2[5] * cospi_20_64 + step2[6] * cospi_12_64; |
| step1[5] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[6] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| step1[8] = HIGHBD_WRAPLOW(step2[8] + step2[9], bd); |
| step1[9] = HIGHBD_WRAPLOW(step2[8] - step2[9], bd); |
| step1[10] = HIGHBD_WRAPLOW(-step2[10] + step2[11], bd); |
| step1[11] = HIGHBD_WRAPLOW(step2[10] + step2[11], bd); |
| step1[12] = HIGHBD_WRAPLOW(step2[12] + step2[13], bd); |
| step1[13] = HIGHBD_WRAPLOW(step2[12] - step2[13], bd); |
| step1[14] = HIGHBD_WRAPLOW(-step2[14] + step2[15], bd); |
| step1[15] = HIGHBD_WRAPLOW(step2[14] + step2[15], bd); |
| |
| // stage 4 |
| temp1 = (step1[0] + step1[1]) * cospi_16_64; |
| temp2 = (step1[0] - step1[1]) * cospi_16_64; |
| step2[0] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[1] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = step1[2] * cospi_24_64 - step1[3] * cospi_8_64; |
| temp2 = step1[2] * cospi_8_64 + step1[3] * cospi_24_64; |
| step2[2] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[3] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step2[4] = HIGHBD_WRAPLOW(step1[4] + step1[5], bd); |
| step2[5] = HIGHBD_WRAPLOW(step1[4] - step1[5], bd); |
| step2[6] = HIGHBD_WRAPLOW(-step1[6] + step1[7], bd); |
| step2[7] = HIGHBD_WRAPLOW(step1[6] + step1[7], bd); |
| |
| step2[8] = step1[8]; |
| step2[15] = step1[15]; |
| temp1 = -step1[9] * cospi_8_64 + step1[14] * cospi_24_64; |
| temp2 = step1[9] * cospi_24_64 + step1[14] * cospi_8_64; |
| step2[9] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[14] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = -step1[10] * cospi_24_64 - step1[13] * cospi_8_64; |
| temp2 = -step1[10] * cospi_8_64 + step1[13] * cospi_24_64; |
| step2[10] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[13] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step2[11] = step1[11]; |
| step2[12] = step1[12]; |
| |
| // stage 5 |
| step1[0] = HIGHBD_WRAPLOW(step2[0] + step2[3], bd); |
| step1[1] = HIGHBD_WRAPLOW(step2[1] + step2[2], bd); |
| step1[2] = HIGHBD_WRAPLOW(step2[1] - step2[2], bd); |
| step1[3] = HIGHBD_WRAPLOW(step2[0] - step2[3], bd); |
| step1[4] = step2[4]; |
| temp1 = (step2[6] - step2[5]) * cospi_16_64; |
| temp2 = (step2[5] + step2[6]) * cospi_16_64; |
| step1[5] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[6] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step1[7] = step2[7]; |
| |
| step1[8] = HIGHBD_WRAPLOW(step2[8] + step2[11], bd); |
| step1[9] = HIGHBD_WRAPLOW(step2[9] + step2[10], bd); |
| step1[10] = HIGHBD_WRAPLOW(step2[9] - step2[10], bd); |
| step1[11] = HIGHBD_WRAPLOW(step2[8] - step2[11], bd); |
| step1[12] = HIGHBD_WRAPLOW(-step2[12] + step2[15], bd); |
| step1[13] = HIGHBD_WRAPLOW(-step2[13] + step2[14], bd); |
| step1[14] = HIGHBD_WRAPLOW(step2[13] + step2[14], bd); |
| step1[15] = HIGHBD_WRAPLOW(step2[12] + step2[15], bd); |
| |
| // stage 6 |
| step2[0] = HIGHBD_WRAPLOW(step1[0] + step1[7], bd); |
| step2[1] = HIGHBD_WRAPLOW(step1[1] + step1[6], bd); |
| step2[2] = HIGHBD_WRAPLOW(step1[2] + step1[5], bd); |
| step2[3] = HIGHBD_WRAPLOW(step1[3] + step1[4], bd); |
| step2[4] = HIGHBD_WRAPLOW(step1[3] - step1[4], bd); |
| step2[5] = HIGHBD_WRAPLOW(step1[2] - step1[5], bd); |
| step2[6] = HIGHBD_WRAPLOW(step1[1] - step1[6], bd); |
| step2[7] = HIGHBD_WRAPLOW(step1[0] - step1[7], bd); |
| step2[8] = step1[8]; |
| step2[9] = step1[9]; |
| temp1 = (-step1[10] + step1[13]) * cospi_16_64; |
| temp2 = (step1[10] + step1[13]) * cospi_16_64; |
| step2[10] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[13] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = (-step1[11] + step1[12]) * cospi_16_64; |
| temp2 = (step1[11] + step1[12]) * cospi_16_64; |
| step2[11] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[12] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step2[14] = step1[14]; |
| step2[15] = step1[15]; |
| |
| // stage 7 |
| output[0] = HIGHBD_WRAPLOW(step2[0] + step2[15], bd); |
| output[1] = HIGHBD_WRAPLOW(step2[1] + step2[14], bd); |
| output[2] = HIGHBD_WRAPLOW(step2[2] + step2[13], bd); |
| output[3] = HIGHBD_WRAPLOW(step2[3] + step2[12], bd); |
| output[4] = HIGHBD_WRAPLOW(step2[4] + step2[11], bd); |
| output[5] = HIGHBD_WRAPLOW(step2[5] + step2[10], bd); |
| output[6] = HIGHBD_WRAPLOW(step2[6] + step2[9], bd); |
| output[7] = HIGHBD_WRAPLOW(step2[7] + step2[8], bd); |
| output[8] = HIGHBD_WRAPLOW(step2[7] - step2[8], bd); |
| output[9] = HIGHBD_WRAPLOW(step2[6] - step2[9], bd); |
| output[10] = HIGHBD_WRAPLOW(step2[5] - step2[10], bd); |
| output[11] = HIGHBD_WRAPLOW(step2[4] - step2[11], bd); |
| output[12] = HIGHBD_WRAPLOW(step2[3] - step2[12], bd); |
| output[13] = HIGHBD_WRAPLOW(step2[2] - step2[13], bd); |
| output[14] = HIGHBD_WRAPLOW(step2[1] - step2[14], bd); |
| output[15] = HIGHBD_WRAPLOW(step2[0] - step2[15], bd); |
| } |
| |
| void aom_highbd_idct16x16_256_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int bd) { |
| tran_low_t out[16 * 16]; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[16], temp_out[16]; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| // First transform rows. |
| for (i = 0; i < 16; ++i) { |
| aom_highbd_idct16_c(input, outptr, bd); |
| input += 16; |
| outptr += 16; |
| } |
| |
| // Then transform columns. |
| for (i = 0; i < 16; ++i) { |
| for (j = 0; j < 16; ++j) temp_in[j] = out[j * 16 + i]; |
| aom_highbd_idct16_c(temp_in, temp_out, bd); |
| for (j = 0; j < 16; ++j) { |
| dest[j * stride + i] = highbd_clip_pixel_add( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6), bd); |
| } |
| } |
| } |
| |
| void aom_highbd_iadst16_c(const tran_low_t *input, tran_low_t *output, int bd) { |
| tran_high_t s0, s1, s2, s3, s4, s5, s6, s7, s8; |
| tran_high_t s9, s10, s11, s12, s13, s14, s15; |
| |
| tran_low_t x0 = input[15]; |
| tran_low_t x1 = input[0]; |
| tran_low_t x2 = input[13]; |
| tran_low_t x3 = input[2]; |
| tran_low_t x4 = input[11]; |
| tran_low_t x5 = input[4]; |
| tran_low_t x6 = input[9]; |
| tran_low_t x7 = input[6]; |
| tran_low_t x8 = input[7]; |
| tran_low_t x9 = input[8]; |
| tran_low_t x10 = input[5]; |
| tran_low_t x11 = input[10]; |
| tran_low_t x12 = input[3]; |
| tran_low_t x13 = input[12]; |
| tran_low_t x14 = input[1]; |
| tran_low_t x15 = input[14]; |
| (void)bd; |
| |
| if (!(x0 | x1 | x2 | x3 | x4 | x5 | x6 | x7 | x8 | x9 | x10 | x11 | x12 | |
| x13 | x14 | x15)) { |
| memset(output, 0, 16 * sizeof(*output)); |
| return; |
| } |
| |
| // 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 = HIGHBD_WRAPLOW(dct_const_round_shift(s0 + s8), bd); |
| x1 = HIGHBD_WRAPLOW(dct_const_round_shift(s1 + s9), bd); |
| x2 = HIGHBD_WRAPLOW(dct_const_round_shift(s2 + s10), bd); |
| x3 = HIGHBD_WRAPLOW(dct_const_round_shift(s3 + s11), bd); |
| x4 = HIGHBD_WRAPLOW(dct_const_round_shift(s4 + s12), bd); |
| x5 = HIGHBD_WRAPLOW(dct_const_round_shift(s5 + s13), bd); |
| x6 = HIGHBD_WRAPLOW(dct_const_round_shift(s6 + s14), bd); |
| x7 = HIGHBD_WRAPLOW(dct_const_round_shift(s7 + s15), bd); |
| x8 = HIGHBD_WRAPLOW(dct_const_round_shift(s0 - s8), bd); |
| x9 = HIGHBD_WRAPLOW(dct_const_round_shift(s1 - s9), bd); |
| x10 = HIGHBD_WRAPLOW(dct_const_round_shift(s2 - s10), bd); |
| x11 = HIGHBD_WRAPLOW(dct_const_round_shift(s3 - s11), bd); |
| x12 = HIGHBD_WRAPLOW(dct_const_round_shift(s4 - s12), bd); |
| x13 = HIGHBD_WRAPLOW(dct_const_round_shift(s5 - s13), bd); |
| x14 = HIGHBD_WRAPLOW(dct_const_round_shift(s6 - s14), bd); |
| x15 = HIGHBD_WRAPLOW(dct_const_round_shift(s7 - s15), bd); |
| |
| // 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 = HIGHBD_WRAPLOW(s0 + s4, bd); |
| x1 = HIGHBD_WRAPLOW(s1 + s5, bd); |
| x2 = HIGHBD_WRAPLOW(s2 + s6, bd); |
| x3 = HIGHBD_WRAPLOW(s3 + s7, bd); |
| x4 = HIGHBD_WRAPLOW(s0 - s4, bd); |
| x5 = HIGHBD_WRAPLOW(s1 - s5, bd); |
| x6 = HIGHBD_WRAPLOW(s2 - s6, bd); |
| x7 = HIGHBD_WRAPLOW(s3 - s7, bd); |
| x8 = HIGHBD_WRAPLOW(dct_const_round_shift(s8 + s12), bd); |
| x9 = HIGHBD_WRAPLOW(dct_const_round_shift(s9 + s13), bd); |
| x10 = HIGHBD_WRAPLOW(dct_const_round_shift(s10 + s14), bd); |
| x11 = HIGHBD_WRAPLOW(dct_const_round_shift(s11 + s15), bd); |
| x12 = HIGHBD_WRAPLOW(dct_const_round_shift(s8 - s12), bd); |
| x13 = HIGHBD_WRAPLOW(dct_const_round_shift(s9 - s13), bd); |
| x14 = HIGHBD_WRAPLOW(dct_const_round_shift(s10 - s14), bd); |
| x15 = HIGHBD_WRAPLOW(dct_const_round_shift(s11 - s15), bd); |
| |
| // 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 = HIGHBD_WRAPLOW(s0 + s2, bd); |
| x1 = HIGHBD_WRAPLOW(s1 + s3, bd); |
| x2 = HIGHBD_WRAPLOW(s0 - s2, bd); |
| x3 = HIGHBD_WRAPLOW(s1 - s3, bd); |
| x4 = HIGHBD_WRAPLOW(dct_const_round_shift(s4 + s6), bd); |
| x5 = HIGHBD_WRAPLOW(dct_const_round_shift(s5 + s7), bd); |
| x6 = HIGHBD_WRAPLOW(dct_const_round_shift(s4 - s6), bd); |
| x7 = HIGHBD_WRAPLOW(dct_const_round_shift(s5 - s7), bd); |
| x8 = HIGHBD_WRAPLOW(s8 + s10, bd); |
| x9 = HIGHBD_WRAPLOW(s9 + s11, bd); |
| x10 = HIGHBD_WRAPLOW(s8 - s10, bd); |
| x11 = HIGHBD_WRAPLOW(s9 - s11, bd); |
| x12 = HIGHBD_WRAPLOW(dct_const_round_shift(s12 + s14), bd); |
| x13 = HIGHBD_WRAPLOW(dct_const_round_shift(s13 + s15), bd); |
| x14 = HIGHBD_WRAPLOW(dct_const_round_shift(s12 - s14), bd); |
| x15 = HIGHBD_WRAPLOW(dct_const_round_shift(s13 - s15), bd); |
| |
| // 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 = HIGHBD_WRAPLOW(dct_const_round_shift(s2), bd); |
| x3 = HIGHBD_WRAPLOW(dct_const_round_shift(s3), bd); |
| x6 = HIGHBD_WRAPLOW(dct_const_round_shift(s6), bd); |
| x7 = HIGHBD_WRAPLOW(dct_const_round_shift(s7), bd); |
| x10 = HIGHBD_WRAPLOW(dct_const_round_shift(s10), bd); |
| x11 = HIGHBD_WRAPLOW(dct_const_round_shift(s11), bd); |
| x14 = HIGHBD_WRAPLOW(dct_const_round_shift(s14), bd); |
| x15 = HIGHBD_WRAPLOW(dct_const_round_shift(s15), bd); |
| |
| output[0] = HIGHBD_WRAPLOW(x0, bd); |
| output[1] = HIGHBD_WRAPLOW(-x8, bd); |
| output[2] = HIGHBD_WRAPLOW(x12, bd); |
| output[3] = HIGHBD_WRAPLOW(-x4, bd); |
| output[4] = HIGHBD_WRAPLOW(x6, bd); |
| output[5] = HIGHBD_WRAPLOW(x14, bd); |
| output[6] = HIGHBD_WRAPLOW(x10, bd); |
| output[7] = HIGHBD_WRAPLOW(x2, bd); |
| output[8] = HIGHBD_WRAPLOW(x3, bd); |
| output[9] = HIGHBD_WRAPLOW(x11, bd); |
| output[10] = HIGHBD_WRAPLOW(x15, bd); |
| output[11] = HIGHBD_WRAPLOW(x7, bd); |
| output[12] = HIGHBD_WRAPLOW(x5, bd); |
| output[13] = HIGHBD_WRAPLOW(-x13, bd); |
| output[14] = HIGHBD_WRAPLOW(x9, bd); |
| output[15] = HIGHBD_WRAPLOW(-x1, bd); |
| } |
| |
| void aom_highbd_idct16x16_10_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int bd) { |
| tran_low_t out[16 * 16] = { 0 }; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[16], temp_out[16]; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| // First transform rows. Since all non-zero dct coefficients are in |
| // upper-left 4x4 area, we only need to calculate first 4 rows here. |
| for (i = 0; i < 4; ++i) { |
| aom_highbd_idct16_c(input, outptr, bd); |
| input += 16; |
| outptr += 16; |
| } |
| |
| // Then transform columns. |
| for (i = 0; i < 16; ++i) { |
| for (j = 0; j < 16; ++j) temp_in[j] = out[j * 16 + i]; |
| aom_highbd_idct16_c(temp_in, temp_out, bd); |
| for (j = 0; j < 16; ++j) { |
| dest[j * stride + i] = highbd_clip_pixel_add( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6), bd); |
| } |
| } |
| } |
| |
| void aom_highbd_idct16x16_1_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int bd) { |
| int i, j; |
| tran_high_t a1; |
| tran_low_t out = |
| HIGHBD_WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64), bd); |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| out = HIGHBD_WRAPLOW(dct_const_round_shift(out * cospi_16_64), bd); |
| a1 = ROUND_POWER_OF_TWO(out, 6); |
| for (j = 0; j < 16; ++j) { |
| for (i = 0; i < 16; ++i) dest[i] = highbd_clip_pixel_add(dest[i], a1, bd); |
| dest += stride; |
| } |
| } |
| |
| void aom_highbd_idct32_c(const tran_low_t *input, tran_low_t *output, int bd) { |
| tran_low_t step1[32], step2[32]; |
| tran_high_t temp1, temp2; |
| (void)bd; |
| |
| // stage 1 |
| step1[0] = input[0]; |
| step1[1] = input[16]; |
| step1[2] = input[8]; |
| step1[3] = input[24]; |
| step1[4] = input[4]; |
| step1[5] = input[20]; |
| step1[6] = input[12]; |
| step1[7] = input[28]; |
| step1[8] = input[2]; |
| step1[9] = input[18]; |
| step1[10] = input[10]; |
| step1[11] = input[26]; |
| step1[12] = input[6]; |
| step1[13] = input[22]; |
| step1[14] = input[14]; |
| step1[15] = input[30]; |
| |
| temp1 = input[1] * cospi_31_64 - input[31] * cospi_1_64; |
| temp2 = input[1] * cospi_1_64 + input[31] * cospi_31_64; |
| step1[16] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[31] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = input[17] * cospi_15_64 - input[15] * cospi_17_64; |
| temp2 = input[17] * cospi_17_64 + input[15] * cospi_15_64; |
| step1[17] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[30] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = input[9] * cospi_23_64 - input[23] * cospi_9_64; |
| temp2 = input[9] * cospi_9_64 + input[23] * cospi_23_64; |
| step1[18] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[29] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = input[25] * cospi_7_64 - input[7] * cospi_25_64; |
| temp2 = input[25] * cospi_25_64 + input[7] * cospi_7_64; |
| step1[19] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[28] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = input[5] * cospi_27_64 - input[27] * cospi_5_64; |
| temp2 = input[5] * cospi_5_64 + input[27] * cospi_27_64; |
| step1[20] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[27] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = input[21] * cospi_11_64 - input[11] * cospi_21_64; |
| temp2 = input[21] * cospi_21_64 + input[11] * cospi_11_64; |
| step1[21] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[26] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = input[13] * cospi_19_64 - input[19] * cospi_13_64; |
| temp2 = input[13] * cospi_13_64 + input[19] * cospi_19_64; |
| step1[22] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[25] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = input[29] * cospi_3_64 - input[3] * cospi_29_64; |
| temp2 = input[29] * cospi_29_64 + input[3] * cospi_3_64; |
| step1[23] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[24] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| // stage 2 |
| step2[0] = step1[0]; |
| step2[1] = step1[1]; |
| step2[2] = step1[2]; |
| step2[3] = step1[3]; |
| step2[4] = step1[4]; |
| step2[5] = step1[5]; |
| step2[6] = step1[6]; |
| step2[7] = step1[7]; |
| |
| temp1 = step1[8] * cospi_30_64 - step1[15] * cospi_2_64; |
| temp2 = step1[8] * cospi_2_64 + step1[15] * cospi_30_64; |
| step2[8] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[15] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = step1[9] * cospi_14_64 - step1[14] * cospi_18_64; |
| temp2 = step1[9] * cospi_18_64 + step1[14] * cospi_14_64; |
| step2[9] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[14] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = step1[10] * cospi_22_64 - step1[13] * cospi_10_64; |
| temp2 = step1[10] * cospi_10_64 + step1[13] * cospi_22_64; |
| step2[10] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[13] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| temp1 = step1[11] * cospi_6_64 - step1[12] * cospi_26_64; |
| temp2 = step1[11] * cospi_26_64 + step1[12] * cospi_6_64; |
| step2[11] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[12] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| step2[16] = HIGHBD_WRAPLOW(step1[16] + step1[17], bd); |
| step2[17] = HIGHBD_WRAPLOW(step1[16] - step1[17], bd); |
| step2[18] = HIGHBD_WRAPLOW(-step1[18] + step1[19], bd); |
| step2[19] = HIGHBD_WRAPLOW(step1[18] + step1[19], bd); |
| step2[20] = HIGHBD_WRAPLOW(step1[20] + step1[21], bd); |
| step2[21] = HIGHBD_WRAPLOW(step1[20] - step1[21], bd); |
| step2[22] = HIGHBD_WRAPLOW(-step1[22] + step1[23], bd); |
| step2[23] = HIGHBD_WRAPLOW(step1[22] + step1[23], bd); |
| step2[24] = HIGHBD_WRAPLOW(step1[24] + step1[25], bd); |
| step2[25] = HIGHBD_WRAPLOW(step1[24] - step1[25], bd); |
| step2[26] = HIGHBD_WRAPLOW(-step1[26] + step1[27], bd); |
| step2[27] = HIGHBD_WRAPLOW(step1[26] + step1[27], bd); |
| step2[28] = HIGHBD_WRAPLOW(step1[28] + step1[29], bd); |
| step2[29] = HIGHBD_WRAPLOW(step1[28] - step1[29], bd); |
| step2[30] = HIGHBD_WRAPLOW(-step1[30] + step1[31], bd); |
| step2[31] = HIGHBD_WRAPLOW(step1[30] + step1[31], bd); |
| |
| // stage 3 |
| step1[0] = step2[0]; |
| step1[1] = step2[1]; |
| step1[2] = step2[2]; |
| step1[3] = step2[3]; |
| |
| temp1 = step2[4] * cospi_28_64 - step2[7] * cospi_4_64; |
| temp2 = step2[4] * cospi_4_64 + step2[7] * cospi_28_64; |
| step1[4] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[7] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = step2[5] * cospi_12_64 - step2[6] * cospi_20_64; |
| temp2 = step2[5] * cospi_20_64 + step2[6] * cospi_12_64; |
| step1[5] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[6] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| |
| step1[8] = HIGHBD_WRAPLOW(step2[8] + step2[9], bd); |
| step1[9] = HIGHBD_WRAPLOW(step2[8] - step2[9], bd); |
| step1[10] = HIGHBD_WRAPLOW(-step2[10] + step2[11], bd); |
| step1[11] = HIGHBD_WRAPLOW(step2[10] + step2[11], bd); |
| step1[12] = HIGHBD_WRAPLOW(step2[12] + step2[13], bd); |
| step1[13] = HIGHBD_WRAPLOW(step2[12] - step2[13], bd); |
| step1[14] = HIGHBD_WRAPLOW(-step2[14] + step2[15], bd); |
| step1[15] = HIGHBD_WRAPLOW(step2[14] + step2[15], bd); |
| |
| step1[16] = step2[16]; |
| step1[31] = step2[31]; |
| temp1 = -step2[17] * cospi_4_64 + step2[30] * cospi_28_64; |
| temp2 = step2[17] * cospi_28_64 + step2[30] * cospi_4_64; |
| step1[17] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[30] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = -step2[18] * cospi_28_64 - step2[29] * cospi_4_64; |
| temp2 = -step2[18] * cospi_4_64 + step2[29] * cospi_28_64; |
| step1[18] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[29] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step1[19] = step2[19]; |
| step1[20] = step2[20]; |
| temp1 = -step2[21] * cospi_20_64 + step2[26] * cospi_12_64; |
| temp2 = step2[21] * cospi_12_64 + step2[26] * cospi_20_64; |
| step1[21] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[26] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = -step2[22] * cospi_12_64 - step2[25] * cospi_20_64; |
| temp2 = -step2[22] * cospi_20_64 + step2[25] * cospi_12_64; |
| step1[22] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[25] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step1[23] = step2[23]; |
| step1[24] = step2[24]; |
| step1[27] = step2[27]; |
| step1[28] = step2[28]; |
| |
| // stage 4 |
| temp1 = (step1[0] + step1[1]) * cospi_16_64; |
| temp2 = (step1[0] - step1[1]) * cospi_16_64; |
| step2[0] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[1] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = step1[2] * cospi_24_64 - step1[3] * cospi_8_64; |
| temp2 = step1[2] * cospi_8_64 + step1[3] * cospi_24_64; |
| step2[2] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[3] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step2[4] = HIGHBD_WRAPLOW(step1[4] + step1[5], bd); |
| step2[5] = HIGHBD_WRAPLOW(step1[4] - step1[5], bd); |
| step2[6] = HIGHBD_WRAPLOW(-step1[6] + step1[7], bd); |
| step2[7] = HIGHBD_WRAPLOW(step1[6] + step1[7], bd); |
| |
| step2[8] = step1[8]; |
| step2[15] = step1[15]; |
| temp1 = -step1[9] * cospi_8_64 + step1[14] * cospi_24_64; |
| temp2 = step1[9] * cospi_24_64 + step1[14] * cospi_8_64; |
| step2[9] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[14] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = -step1[10] * cospi_24_64 - step1[13] * cospi_8_64; |
| temp2 = -step1[10] * cospi_8_64 + step1[13] * cospi_24_64; |
| step2[10] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[13] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step2[11] = step1[11]; |
| step2[12] = step1[12]; |
| |
| step2[16] = HIGHBD_WRAPLOW(step1[16] + step1[19], bd); |
| step2[17] = HIGHBD_WRAPLOW(step1[17] + step1[18], bd); |
| step2[18] = HIGHBD_WRAPLOW(step1[17] - step1[18], bd); |
| step2[19] = HIGHBD_WRAPLOW(step1[16] - step1[19], bd); |
| step2[20] = HIGHBD_WRAPLOW(-step1[20] + step1[23], bd); |
| step2[21] = HIGHBD_WRAPLOW(-step1[21] + step1[22], bd); |
| step2[22] = HIGHBD_WRAPLOW(step1[21] + step1[22], bd); |
| step2[23] = HIGHBD_WRAPLOW(step1[20] + step1[23], bd); |
| |
| step2[24] = HIGHBD_WRAPLOW(step1[24] + step1[27], bd); |
| step2[25] = HIGHBD_WRAPLOW(step1[25] + step1[26], bd); |
| step2[26] = HIGHBD_WRAPLOW(step1[25] - step1[26], bd); |
| step2[27] = HIGHBD_WRAPLOW(step1[24] - step1[27], bd); |
| step2[28] = HIGHBD_WRAPLOW(-step1[28] + step1[31], bd); |
| step2[29] = HIGHBD_WRAPLOW(-step1[29] + step1[30], bd); |
| step2[30] = HIGHBD_WRAPLOW(step1[29] + step1[30], bd); |
| step2[31] = HIGHBD_WRAPLOW(step1[28] + step1[31], bd); |
| |
| // stage 5 |
| step1[0] = HIGHBD_WRAPLOW(step2[0] + step2[3], bd); |
| step1[1] = HIGHBD_WRAPLOW(step2[1] + step2[2], bd); |
| step1[2] = HIGHBD_WRAPLOW(step2[1] - step2[2], bd); |
| step1[3] = HIGHBD_WRAPLOW(step2[0] - step2[3], bd); |
| step1[4] = step2[4]; |
| temp1 = (step2[6] - step2[5]) * cospi_16_64; |
| temp2 = (step2[5] + step2[6]) * cospi_16_64; |
| step1[5] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[6] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step1[7] = step2[7]; |
| |
| step1[8] = HIGHBD_WRAPLOW(step2[8] + step2[11], bd); |
| step1[9] = HIGHBD_WRAPLOW(step2[9] + step2[10], bd); |
| step1[10] = HIGHBD_WRAPLOW(step2[9] - step2[10], bd); |
| step1[11] = HIGHBD_WRAPLOW(step2[8] - step2[11], bd); |
| step1[12] = HIGHBD_WRAPLOW(-step2[12] + step2[15], bd); |
| step1[13] = HIGHBD_WRAPLOW(-step2[13] + step2[14], bd); |
| step1[14] = HIGHBD_WRAPLOW(step2[13] + step2[14], bd); |
| step1[15] = HIGHBD_WRAPLOW(step2[12] + step2[15], bd); |
| |
| step1[16] = step2[16]; |
| step1[17] = step2[17]; |
| temp1 = -step2[18] * cospi_8_64 + step2[29] * cospi_24_64; |
| temp2 = step2[18] * cospi_24_64 + step2[29] * cospi_8_64; |
| step1[18] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[29] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = -step2[19] * cospi_8_64 + step2[28] * cospi_24_64; |
| temp2 = step2[19] * cospi_24_64 + step2[28] * cospi_8_64; |
| step1[19] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[28] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = -step2[20] * cospi_24_64 - step2[27] * cospi_8_64; |
| temp2 = -step2[20] * cospi_8_64 + step2[27] * cospi_24_64; |
| step1[20] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[27] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = -step2[21] * cospi_24_64 - step2[26] * cospi_8_64; |
| temp2 = -step2[21] * cospi_8_64 + step2[26] * cospi_24_64; |
| step1[21] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[26] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step1[22] = step2[22]; |
| step1[23] = step2[23]; |
| step1[24] = step2[24]; |
| step1[25] = step2[25]; |
| step1[30] = step2[30]; |
| step1[31] = step2[31]; |
| |
| // stage 6 |
| step2[0] = HIGHBD_WRAPLOW(step1[0] + step1[7], bd); |
| step2[1] = HIGHBD_WRAPLOW(step1[1] + step1[6], bd); |
| step2[2] = HIGHBD_WRAPLOW(step1[2] + step1[5], bd); |
| step2[3] = HIGHBD_WRAPLOW(step1[3] + step1[4], bd); |
| step2[4] = HIGHBD_WRAPLOW(step1[3] - step1[4], bd); |
| step2[5] = HIGHBD_WRAPLOW(step1[2] - step1[5], bd); |
| step2[6] = HIGHBD_WRAPLOW(step1[1] - step1[6], bd); |
| step2[7] = HIGHBD_WRAPLOW(step1[0] - step1[7], bd); |
| step2[8] = step1[8]; |
| step2[9] = step1[9]; |
| temp1 = (-step1[10] + step1[13]) * cospi_16_64; |
| temp2 = (step1[10] + step1[13]) * cospi_16_64; |
| step2[10] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[13] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = (-step1[11] + step1[12]) * cospi_16_64; |
| temp2 = (step1[11] + step1[12]) * cospi_16_64; |
| step2[11] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step2[12] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step2[14] = step1[14]; |
| step2[15] = step1[15]; |
| |
| step2[16] = HIGHBD_WRAPLOW(step1[16] + step1[23], bd); |
| step2[17] = HIGHBD_WRAPLOW(step1[17] + step1[22], bd); |
| step2[18] = HIGHBD_WRAPLOW(step1[18] + step1[21], bd); |
| step2[19] = HIGHBD_WRAPLOW(step1[19] + step1[20], bd); |
| step2[20] = HIGHBD_WRAPLOW(step1[19] - step1[20], bd); |
| step2[21] = HIGHBD_WRAPLOW(step1[18] - step1[21], bd); |
| step2[22] = HIGHBD_WRAPLOW(step1[17] - step1[22], bd); |
| step2[23] = HIGHBD_WRAPLOW(step1[16] - step1[23], bd); |
| |
| step2[24] = HIGHBD_WRAPLOW(-step1[24] + step1[31], bd); |
| step2[25] = HIGHBD_WRAPLOW(-step1[25] + step1[30], bd); |
| step2[26] = HIGHBD_WRAPLOW(-step1[26] + step1[29], bd); |
| step2[27] = HIGHBD_WRAPLOW(-step1[27] + step1[28], bd); |
| step2[28] = HIGHBD_WRAPLOW(step1[27] + step1[28], bd); |
| step2[29] = HIGHBD_WRAPLOW(step1[26] + step1[29], bd); |
| step2[30] = HIGHBD_WRAPLOW(step1[25] + step1[30], bd); |
| step2[31] = HIGHBD_WRAPLOW(step1[24] + step1[31], bd); |
| |
| // stage 7 |
| step1[0] = HIGHBD_WRAPLOW(step2[0] + step2[15], bd); |
| step1[1] = HIGHBD_WRAPLOW(step2[1] + step2[14], bd); |
| step1[2] = HIGHBD_WRAPLOW(step2[2] + step2[13], bd); |
| step1[3] = HIGHBD_WRAPLOW(step2[3] + step2[12], bd); |
| step1[4] = HIGHBD_WRAPLOW(step2[4] + step2[11], bd); |
| step1[5] = HIGHBD_WRAPLOW(step2[5] + step2[10], bd); |
| step1[6] = HIGHBD_WRAPLOW(step2[6] + step2[9], bd); |
| step1[7] = HIGHBD_WRAPLOW(step2[7] + step2[8], bd); |
| step1[8] = HIGHBD_WRAPLOW(step2[7] - step2[8], bd); |
| step1[9] = HIGHBD_WRAPLOW(step2[6] - step2[9], bd); |
| step1[10] = HIGHBD_WRAPLOW(step2[5] - step2[10], bd); |
| step1[11] = HIGHBD_WRAPLOW(step2[4] - step2[11], bd); |
| step1[12] = HIGHBD_WRAPLOW(step2[3] - step2[12], bd); |
| step1[13] = HIGHBD_WRAPLOW(step2[2] - step2[13], bd); |
| step1[14] = HIGHBD_WRAPLOW(step2[1] - step2[14], bd); |
| step1[15] = HIGHBD_WRAPLOW(step2[0] - step2[15], bd); |
| |
| step1[16] = step2[16]; |
| step1[17] = step2[17]; |
| step1[18] = step2[18]; |
| step1[19] = step2[19]; |
| temp1 = (-step2[20] + step2[27]) * cospi_16_64; |
| temp2 = (step2[20] + step2[27]) * cospi_16_64; |
| step1[20] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[27] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = (-step2[21] + step2[26]) * cospi_16_64; |
| temp2 = (step2[21] + step2[26]) * cospi_16_64; |
| step1[21] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[26] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = (-step2[22] + step2[25]) * cospi_16_64; |
| temp2 = (step2[22] + step2[25]) * cospi_16_64; |
| step1[22] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[25] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| temp1 = (-step2[23] + step2[24]) * cospi_16_64; |
| temp2 = (step2[23] + step2[24]) * cospi_16_64; |
| step1[23] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd); |
| step1[24] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd); |
| step1[28] = step2[28]; |
| step1[29] = step2[29]; |
| step1[30] = step2[30]; |
| step1[31] = step2[31]; |
| |
| // final stage |
| output[0] = HIGHBD_WRAPLOW(step1[0] + step1[31], bd); |
| output[1] = HIGHBD_WRAPLOW(step1[1] + step1[30], bd); |
| output[2] = HIGHBD_WRAPLOW(step1[2] + step1[29], bd); |
| output[3] = HIGHBD_WRAPLOW(step1[3] + step1[28], bd); |
| output[4] = HIGHBD_WRAPLOW(step1[4] + step1[27], bd); |
| output[5] = HIGHBD_WRAPLOW(step1[5] + step1[26], bd); |
| output[6] = HIGHBD_WRAPLOW(step1[6] + step1[25], bd); |
| output[7] = HIGHBD_WRAPLOW(step1[7] + step1[24], bd); |
| output[8] = HIGHBD_WRAPLOW(step1[8] + step1[23], bd); |
| output[9] = HIGHBD_WRAPLOW(step1[9] + step1[22], bd); |
| output[10] = HIGHBD_WRAPLOW(step1[10] + step1[21], bd); |
| output[11] = HIGHBD_WRAPLOW(step1[11] + step1[20], bd); |
| output[12] = HIGHBD_WRAPLOW(step1[12] + step1[19], bd); |
| output[13] = HIGHBD_WRAPLOW(step1[13] + step1[18], bd); |
| output[14] = HIGHBD_WRAPLOW(step1[14] + step1[17], bd); |
| output[15] = HIGHBD_WRAPLOW(step1[15] + step1[16], bd); |
| output[16] = HIGHBD_WRAPLOW(step1[15] - step1[16], bd); |
| output[17] = HIGHBD_WRAPLOW(step1[14] - step1[17], bd); |
| output[18] = HIGHBD_WRAPLOW(step1[13] - step1[18], bd); |
| output[19] = HIGHBD_WRAPLOW(step1[12] - step1[19], bd); |
| output[20] = HIGHBD_WRAPLOW(step1[11] - step1[20], bd); |
| output[21] = HIGHBD_WRAPLOW(step1[10] - step1[21], bd); |
| output[22] = HIGHBD_WRAPLOW(step1[9] - step1[22], bd); |
| output[23] = HIGHBD_WRAPLOW(step1[8] - step1[23], bd); |
| output[24] = HIGHBD_WRAPLOW(step1[7] - step1[24], bd); |
| output[25] = HIGHBD_WRAPLOW(step1[6] - step1[25], bd); |
| output[26] = HIGHBD_WRAPLOW(step1[5] - step1[26], bd); |
| output[27] = HIGHBD_WRAPLOW(step1[4] - step1[27], bd); |
| output[28] = HIGHBD_WRAPLOW(step1[3] - step1[28], bd); |
| output[29] = HIGHBD_WRAPLOW(step1[2] - step1[29], bd); |
| output[30] = HIGHBD_WRAPLOW(step1[1] - step1[30], bd); |
| output[31] = HIGHBD_WRAPLOW(step1[0] - step1[31], bd); |
| } |
| |
| void aom_highbd_idct32x32_1024_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int bd) { |
| tran_low_t out[32 * 32]; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[32], temp_out[32]; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| // Rows |
| for (i = 0; i < 32; ++i) { |
| tran_low_t zero_coeff[16]; |
| for (j = 0; j < 16; ++j) zero_coeff[j] = input[2 * j] | input[2 * j + 1]; |
| for (j = 0; j < 8; ++j) |
| zero_coeff[j] = zero_coeff[2 * j] | zero_coeff[2 * j + 1]; |
| for (j = 0; j < 4; ++j) |
| zero_coeff[j] = zero_coeff[2 * j] | zero_coeff[2 * j + 1]; |
| for (j = 0; j < 2; ++j) |
| zero_coeff[j] = zero_coeff[2 * j] | zero_coeff[2 * j + 1]; |
| |
| if (zero_coeff[0] | zero_coeff[1]) |
| aom_highbd_idct32_c(input, outptr, bd); |
| else |
| memset(outptr, 0, sizeof(tran_low_t) * 32); |
| input += 32; |
| outptr += 32; |
| } |
| |
| // Columns |
| for (i = 0; i < 32; ++i) { |
| for (j = 0; j < 32; ++j) temp_in[j] = out[j * 32 + i]; |
| aom_highbd_idct32_c(temp_in, temp_out, bd); |
| for (j = 0; j < 32; ++j) { |
| dest[j * stride + i] = highbd_clip_pixel_add( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6), bd); |
| } |
| } |
| } |
| |
| void aom_highbd_idct32x32_34_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int bd) { |
| tran_low_t out[32 * 32] = { 0 }; |
| tran_low_t *outptr = out; |
| int i, j; |
| tran_low_t temp_in[32], temp_out[32]; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| // Rows |
| // Only upper-left 8x8 has non-zero coeff. |
| for (i = 0; i < 8; ++i) { |
| aom_highbd_idct32_c(input, outptr, bd); |
| input += 32; |
| outptr += 32; |
| } |
| // Columns |
| for (i = 0; i < 32; ++i) { |
| for (j = 0; j < 32; ++j) temp_in[j] = out[j * 32 + i]; |
| aom_highbd_idct32_c(temp_in, temp_out, bd); |
| for (j = 0; j < 32; ++j) { |
| dest[j * stride + i] = highbd_clip_pixel_add( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6), bd); |
| } |
| } |
| } |
| |
| void aom_highbd_idct32x32_1_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int bd) { |
| int i, j; |
| int a1; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| tran_low_t out = |
| HIGHBD_WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64), bd); |
| out = HIGHBD_WRAPLOW(dct_const_round_shift(out * cospi_16_64), bd); |
| a1 = ROUND_POWER_OF_TWO(out, 6); |
| |
| for (j = 0; j < 32; ++j) { |
| for (i = 0; i < 32; ++i) dest[i] = highbd_clip_pixel_add(dest[i], a1, bd); |
| dest += stride; |
| } |
| } |
| #endif // CONFIG_AOM_HIGHBITDEPTH |
