| /* |
| * Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include <math.h> |
| |
| #include "./vp9_rtcd.h" |
| #include "vp9/common/vp9_systemdependent.h" |
| #include "vp9/common/vp9_blockd.h" |
| #include "vp9/common/vp9_idct.h" |
| |
| #if CONFIG_EMULATE_HARDWARE_HIGHBITDEPTH |
| // When CONFIG_EMULATE_HW_HIGHBITDEPTH is 1 the transform performs strict |
| // overflow wrapping to match expected hardware implementations. |
| // bd of 8 uses trans_low with 16bits, need to remove 16bits |
| // bd of 10 uses trans_low with 18bits, need to remove 14bits |
| // bd of 12 uses trans_low with 20bits, need to remove 12bits |
| // bd of x uses trans_low with 8+x bits, need to remove 24-x bits |
| #define WRAPLOW(x) ((((int32_t)x) << (24 - bd)) >> (24 - bd)) |
| #else |
| #define WRAPLOW(x) (x) |
| #endif // CONFIG_EMULATE_HARDWARE_HIGHBITDEPTH |
| |
| #if CONFIG_VP9_HIGHBITDEPTH |
| static INLINE tran_low_t clamp_high(tran_high_t value, tran_low_t low, |
| tran_low_t high) { |
| return value < low ? low : (value > high ? high : value); |
| } |
| |
| static INLINE tran_low_t clip_pixel_bd_high(tran_high_t dest, |
| tran_high_t trans, int bd) { |
| trans = WRAPLOW(trans); |
| switch (bd) { |
| case 8: |
| default: |
| return clamp_high(WRAPLOW(dest + trans), 0, 255); |
| case 10: |
| return clamp_high(WRAPLOW(dest + trans), 0, 1023); |
| case 12: |
| return clamp_high(WRAPLOW(dest + trans), 0, 4095); |
| } |
| } |
| #endif // CONFIG_VP9_HIGHBITDEPTH |
| |
| void vp9_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] = a1; |
| op[1] = b1; |
| op[2] = c1; |
| op[3] = 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(dest[stride * 0] + a1); |
| dest[stride * 1] = clip_pixel(dest[stride * 1] + b1); |
| dest[stride * 2] = clip_pixel(dest[stride * 2] + c1); |
| dest[stride * 3] = clip_pixel(dest[stride * 3] + d1); |
| |
| ip++; |
| dest++; |
| } |
| } |
| |
| void vp9_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] = a1; |
| op[1] = op[2] = op[3] = e1; |
| |
| ip = tmp; |
| for (i = 0; i < 4; i++) { |
| e1 = ip[0] >> 1; |
| a1 = ip[0] - e1; |
| dest[dest_stride * 0] = clip_pixel(dest[dest_stride * 0] + a1); |
| dest[dest_stride * 1] = clip_pixel(dest[dest_stride * 1] + e1); |
| dest[dest_stride * 2] = clip_pixel(dest[dest_stride * 2] + e1); |
| dest[dest_stride * 3] = clip_pixel(dest[dest_stride * 3] + e1); |
| ip++; |
| dest++; |
| } |
| } |
| |
| static void idct4(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] = dct_const_round_shift(temp1); |
| step[1] = 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] = dct_const_round_shift(temp1); |
| step[3] = dct_const_round_shift(temp2); |
| |
| // stage 2 |
| output[0] = step[0] + step[3]; |
| output[1] = step[1] + step[2]; |
| output[2] = step[1] - step[2]; |
| output[3] = step[0] - step[3]; |
| } |
| |
| void vp9_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) { |
| idct4(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]; |
| idct4(temp_in, temp_out); |
| for (j = 0; j < 4; ++j) |
| dest[j * stride + i] = clip_pixel(ROUND_POWER_OF_TWO(temp_out[j], 4) |
| + dest[j * stride + i]); |
| } |
| } |
| |
| void vp9_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 = dct_const_round_shift(input[0] * cospi_16_64); |
| out = 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(dest[0] + a1); |
| dest[1] = clip_pixel(dest[1] + a1); |
| dest[2] = clip_pixel(dest[2] + a1); |
| dest[3] = clip_pixel(dest[3] + a1); |
| dest += dest_stride; |
| } |
| } |
| |
| static void idct8(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] = dct_const_round_shift(temp1); |
| step1[7] = 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] = dct_const_round_shift(temp1); |
| step1[6] = dct_const_round_shift(temp2); |
| |
| // stage 2 & stage 3 - even half |
| idct4(step1, step1); |
| |
| // stage 2 - odd half |
| step2[4] = step1[4] + step1[5]; |
| step2[5] = step1[4] - step1[5]; |
| step2[6] = -step1[6] + step1[7]; |
| step2[7] = step1[6] + step1[7]; |
| |
| // 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] = dct_const_round_shift(temp1); |
| step1[6] = dct_const_round_shift(temp2); |
| step1[7] = step2[7]; |
| |
| // stage 4 |
| output[0] = step1[0] + step1[7]; |
| output[1] = step1[1] + step1[6]; |
| output[2] = step1[2] + step1[5]; |
| output[3] = step1[3] + step1[4]; |
| output[4] = step1[3] - step1[4]; |
| output[5] = step1[2] - step1[5]; |
| output[6] = step1[1] - step1[6]; |
| output[7] = step1[0] - step1[7]; |
| } |
| |
| void vp9_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) { |
| idct8(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]; |
| idct8(temp_in, temp_out); |
| for (j = 0; j < 8; ++j) |
| dest[j * stride + i] = clip_pixel(ROUND_POWER_OF_TWO(temp_out[j], 5) |
| + dest[j * stride + i]); |
| } |
| } |
| |
| void vp9_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 = dct_const_round_shift(input[0] * cospi_16_64); |
| out = 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(dest[i] + a1); |
| dest += stride; |
| } |
| } |
| |
| static void iadst4(const tran_low_t *input, tran_low_t *output) { |
| tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; |
| |
| tran_high_t x0 = input[0]; |
| tran_high_t x1 = input[1]; |
| tran_high_t x2 = input[2]; |
| tran_high_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 = x0 - x2 + x3; |
| |
| x0 = s0 + s3 + s5; |
| x1 = s1 - s4 - s6; |
| x2 = sinpi_3_9 * s7; |
| x3 = s2; |
| |
| s0 = x0 + x3; |
| s1 = x1 + x3; |
| s2 = x2; |
| s3 = x0 + x1 - x3; |
| |
| // 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] = dct_const_round_shift(s0); |
| output[1] = dct_const_round_shift(s1); |
| output[2] = dct_const_round_shift(s2); |
| output[3] = dct_const_round_shift(s3); |
| } |
| |
| void vp9_iht4x4_16_add_c(const tran_low_t *input, uint8_t *dest, int stride, |
| int tx_type) { |
| const transform_2d IHT_4[] = { |
| { idct4, idct4 }, // DCT_DCT = 0 |
| { iadst4, idct4 }, // ADST_DCT = 1 |
| { idct4, iadst4 }, // DCT_ADST = 2 |
| { iadst4, iadst4 } // ADST_ADST = 3 |
| }; |
| |
| int i, j; |
| tran_low_t out[4 * 4]; |
| tran_low_t *outptr = out; |
| tran_low_t temp_in[4], temp_out[4]; |
| |
| // inverse transform row vectors |
| for (i = 0; i < 4; ++i) { |
| IHT_4[tx_type].rows(input, outptr); |
| input += 4; |
| outptr += 4; |
| } |
| |
| // inverse transform column vectors |
| for (i = 0; i < 4; ++i) { |
| for (j = 0; j < 4; ++j) |
| temp_in[j] = out[j * 4 + i]; |
| IHT_4[tx_type].cols(temp_in, temp_out); |
| for (j = 0; j < 4; ++j) |
| dest[j * stride + i] = clip_pixel(ROUND_POWER_OF_TWO(temp_out[j], 4) |
| + dest[j * stride + i]); |
| } |
| } |
| static void iadst8(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 = 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 = dct_const_round_shift(s0 + s4); |
| x1 = dct_const_round_shift(s1 + s5); |
| x2 = dct_const_round_shift(s2 + s6); |
| x3 = dct_const_round_shift(s3 + s7); |
| x4 = dct_const_round_shift(s0 - s4); |
| x5 = dct_const_round_shift(s1 - s5); |
| x6 = dct_const_round_shift(s2 - s6); |
| x7 = dct_const_round_shift(s3 - s7); |
| |
| // stage 2 |
| s0 = x0; |
| s1 = x1; |
| s2 = x2; |
| s3 = x3; |
| s4 = cospi_8_64 * x4 + cospi_24_64 * x5; |
| s5 = cospi_24_64 * x4 - cospi_8_64 * x5; |
| s6 = -cospi_24_64 * x6 + cospi_8_64 * x7; |
| s7 = cospi_8_64 * x6 + cospi_24_64 * x7; |
| |
| x0 = s0 + s2; |
| x1 = s1 + s3; |
| x2 = s0 - s2; |
| x3 = s1 - s3; |
| x4 = dct_const_round_shift(s4 + s6); |
| x5 = dct_const_round_shift(s5 + s7); |
| x6 = dct_const_round_shift(s4 - s6); |
| x7 = dct_const_round_shift(s5 - s7); |
| |
| // stage 3 |
| s2 = cospi_16_64 * (x2 + x3); |
| s3 = cospi_16_64 * (x2 - x3); |
| s6 = cospi_16_64 * (x6 + x7); |
| s7 = cospi_16_64 * (x6 - x7); |
| |
| x2 = dct_const_round_shift(s2); |
| x3 = dct_const_round_shift(s3); |
| x6 = dct_const_round_shift(s6); |
| x7 = dct_const_round_shift(s7); |
| |
| output[0] = x0; |
| output[1] = -x4; |
| output[2] = x6; |
| output[3] = -x2; |
| output[4] = x3; |
| output[5] = -x7; |
| output[6] = x5; |
| output[7] = -x1; |
| } |
| |
| static const transform_2d IHT_8[] = { |
| { idct8, idct8 }, // DCT_DCT = 0 |
| { iadst8, idct8 }, // ADST_DCT = 1 |
| { idct8, iadst8 }, // DCT_ADST = 2 |
| { iadst8, iadst8 } // ADST_ADST = 3 |
| }; |
| |
| void vp9_iht8x8_64_add_c(const tran_low_t *input, uint8_t *dest, int stride, |
| int tx_type) { |
| int i, j; |
| tran_low_t out[8 * 8]; |
| tran_low_t *outptr = out; |
| tran_low_t temp_in[8], temp_out[8]; |
| const transform_2d ht = IHT_8[tx_type]; |
| |
| // inverse transform row vectors |
| for (i = 0; i < 8; ++i) { |
| ht.rows(input, outptr); |
| input += 8; |
| outptr += 8; |
| } |
| |
| // inverse transform column vectors |
| for (i = 0; i < 8; ++i) { |
| for (j = 0; j < 8; ++j) |
| temp_in[j] = out[j * 8 + i]; |
| ht.cols(temp_in, temp_out); |
| for (j = 0; j < 8; ++j) |
| dest[j * stride + i] = clip_pixel(ROUND_POWER_OF_TWO(temp_out[j], 5) |
| + dest[j * stride + i]); |
| } |
| } |
| |
| void vp9_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) { |
| idct8(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]; |
| idct8(temp_in, temp_out); |
| for (j = 0; j < 8; ++j) |
| dest[j * stride + i] = clip_pixel(ROUND_POWER_OF_TWO(temp_out[j], 5) |
| + dest[j * stride + i]); |
| } |
| } |
| |
| static void idct16(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] = dct_const_round_shift(temp1); |
| step2[15] = 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] = dct_const_round_shift(temp1); |
| step2[14] = 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] = dct_const_round_shift(temp1); |
| step2[13] = 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] = dct_const_round_shift(temp1); |
| step2[12] = 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] = dct_const_round_shift(temp1); |
| step1[7] = 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] = dct_const_round_shift(temp1); |
| step1[6] = dct_const_round_shift(temp2); |
| |
| step1[8] = step2[8] + step2[9]; |
| step1[9] = step2[8] - step2[9]; |
| step1[10] = -step2[10] + step2[11]; |
| step1[11] = step2[10] + step2[11]; |
| step1[12] = step2[12] + step2[13]; |
| step1[13] = step2[12] - step2[13]; |
| step1[14] = -step2[14] + step2[15]; |
| step1[15] = step2[14] + step2[15]; |
| |
| // stage 4 |
| temp1 = (step1[0] + step1[1]) * cospi_16_64; |
| temp2 = (step1[0] - step1[1]) * cospi_16_64; |
| step2[0] = dct_const_round_shift(temp1); |
| step2[1] = 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] = dct_const_round_shift(temp1); |
| step2[3] = dct_const_round_shift(temp2); |
| step2[4] = step1[4] + step1[5]; |
| step2[5] = step1[4] - step1[5]; |
| step2[6] = -step1[6] + step1[7]; |
| step2[7] = 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] = dct_const_round_shift(temp1); |
| step2[14] = 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] = dct_const_round_shift(temp1); |
| step2[13] = dct_const_round_shift(temp2); |
| step2[11] = step1[11]; |
| step2[12] = step1[12]; |
| |
| // stage 5 |
| step1[0] = step2[0] + step2[3]; |
| step1[1] = step2[1] + step2[2]; |
| step1[2] = step2[1] - step2[2]; |
| step1[3] = 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] = dct_const_round_shift(temp1); |
| step1[6] = dct_const_round_shift(temp2); |
| step1[7] = step2[7]; |
| |
| step1[8] = step2[8] + step2[11]; |
| step1[9] = step2[9] + step2[10]; |
| step1[10] = step2[9] - step2[10]; |
| step1[11] = step2[8] - step2[11]; |
| step1[12] = -step2[12] + step2[15]; |
| step1[13] = -step2[13] + step2[14]; |
| step1[14] = step2[13] + step2[14]; |
| step1[15] = step2[12] + step2[15]; |
| |
| // stage 6 |
| step2[0] = step1[0] + step1[7]; |
| step2[1] = step1[1] + step1[6]; |
| step2[2] = step1[2] + step1[5]; |
| step2[3] = step1[3] + step1[4]; |
| step2[4] = step1[3] - step1[4]; |
| step2[5] = step1[2] - step1[5]; |
| step2[6] = step1[1] - step1[6]; |
| step2[7] = 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] = dct_const_round_shift(temp1); |
| step2[13] = dct_const_round_shift(temp2); |
| temp1 = (-step1[11] + step1[12]) * cospi_16_64; |
| temp2 = (step1[11] + step1[12]) * cospi_16_64; |
| step2[11] = dct_const_round_shift(temp1); |
| step2[12] = dct_const_round_shift(temp2); |
| step2[14] = step1[14]; |
| step2[15] = step1[15]; |
| |
| // stage 7 |
| output[0] = step2[0] + step2[15]; |
| output[1] = step2[1] + step2[14]; |
| output[2] = step2[2] + step2[13]; |
| output[3] = step2[3] + step2[12]; |
| output[4] = step2[4] + step2[11]; |
| output[5] = step2[5] + step2[10]; |
| output[6] = step2[6] + step2[9]; |
| output[7] = step2[7] + step2[8]; |
| output[8] = step2[7] - step2[8]; |
| output[9] = step2[6] - step2[9]; |
| output[10] = step2[5] - step2[10]; |
| output[11] = step2[4] - step2[11]; |
| output[12] = step2[3] - step2[12]; |
| output[13] = step2[2] - step2[13]; |
| output[14] = step2[1] - step2[14]; |
| output[15] = step2[0] - step2[15]; |
| } |
| |
| void vp9_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) { |
| idct16(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]; |
| idct16(temp_in, temp_out); |
| for (j = 0; j < 16; ++j) |
| dest[j * stride + i] = clip_pixel(ROUND_POWER_OF_TWO(temp_out[j], 6) |
| + dest[j * stride + i]); |
| } |
| } |
| |
| static void iadst16(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 = dct_const_round_shift(s0 + s8); |
| x1 = dct_const_round_shift(s1 + s9); |
| x2 = dct_const_round_shift(s2 + s10); |
| x3 = dct_const_round_shift(s3 + s11); |
| x4 = dct_const_round_shift(s4 + s12); |
| x5 = dct_const_round_shift(s5 + s13); |
| x6 = dct_const_round_shift(s6 + s14); |
| x7 = dct_const_round_shift(s7 + s15); |
| x8 = dct_const_round_shift(s0 - s8); |
| x9 = dct_const_round_shift(s1 - s9); |
| x10 = dct_const_round_shift(s2 - s10); |
| x11 = dct_const_round_shift(s3 - s11); |
| x12 = dct_const_round_shift(s4 - s12); |
| x13 = dct_const_round_shift(s5 - s13); |
| x14 = dct_const_round_shift(s6 - s14); |
| x15 = 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 = s0 + s4; |
| x1 = s1 + s5; |
| x2 = s2 + s6; |
| x3 = s3 + s7; |
| x4 = s0 - s4; |
| x5 = s1 - s5; |
| x6 = s2 - s6; |
| x7 = s3 - s7; |
| x8 = dct_const_round_shift(s8 + s12); |
| x9 = dct_const_round_shift(s9 + s13); |
| x10 = dct_const_round_shift(s10 + s14); |
| x11 = dct_const_round_shift(s11 + s15); |
| x12 = dct_const_round_shift(s8 - s12); |
| x13 = dct_const_round_shift(s9 - s13); |
| x14 = dct_const_round_shift(s10 - s14); |
| x15 = 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 = s0 + s2; |
| x1 = s1 + s3; |
| x2 = s0 - s2; |
| x3 = s1 - s3; |
| x4 = dct_const_round_shift(s4 + s6); |
| x5 = dct_const_round_shift(s5 + s7); |
| x6 = dct_const_round_shift(s4 - s6); |
| x7 = dct_const_round_shift(s5 - s7); |
| x8 = s8 + s10; |
| x9 = s9 + s11; |
| x10 = s8 - s10; |
| x11 = s9 - s11; |
| x12 = dct_const_round_shift(s12 + s14); |
| x13 = dct_const_round_shift(s13 + s15); |
| x14 = dct_const_round_shift(s12 - s14); |
| x15 = 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 = dct_const_round_shift(s2); |
| x3 = dct_const_round_shift(s3); |
| x6 = dct_const_round_shift(s6); |
| x7 = dct_const_round_shift(s7); |
| x10 = dct_const_round_shift(s10); |
| x11 = dct_const_round_shift(s11); |
| x14 = dct_const_round_shift(s14); |
| x15 = dct_const_round_shift(s15); |
| |
| output[0] = x0; |
| output[1] = -x8; |
| output[2] = x12; |
| output[3] = -x4; |
| output[4] = x6; |
| output[5] = x14; |
| output[6] = x10; |
| output[7] = x2; |
| output[8] = x3; |
| output[9] = x11; |
| output[10] = x15; |
| output[11] = x7; |
| output[12] = x5; |
| output[13] = -x13; |
| output[14] = x9; |
| output[15] = -x1; |
| } |
| |
| static const transform_2d IHT_16[] = { |
| { idct16, idct16 }, // DCT_DCT = 0 |
| { iadst16, idct16 }, // ADST_DCT = 1 |
| { idct16, iadst16 }, // DCT_ADST = 2 |
| { iadst16, iadst16 } // ADST_ADST = 3 |
| }; |
| |
| void vp9_iht16x16_256_add_c(const tran_low_t *input, uint8_t *dest, int stride, |
| int tx_type) { |
| int i, j; |
| tran_low_t out[16 * 16]; |
| tran_low_t *outptr = out; |
| tran_low_t temp_in[16], temp_out[16]; |
| const transform_2d ht = IHT_16[tx_type]; |
| |
| // Rows |
| for (i = 0; i < 16; ++i) { |
| ht.rows(input, outptr); |
| input += 16; |
| outptr += 16; |
| } |
| |
| // Columns |
| for (i = 0; i < 16; ++i) { |
| for (j = 0; j < 16; ++j) |
| temp_in[j] = out[j * 16 + i]; |
| ht.cols(temp_in, temp_out); |
| for (j = 0; j < 16; ++j) |
| dest[j * stride + i] = clip_pixel(ROUND_POWER_OF_TWO(temp_out[j], 6) |
| + dest[j * stride + i]); |
| } |
| } |
| |
| void vp9_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) { |
| idct16(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]; |
| idct16(temp_in, temp_out); |
| for (j = 0; j < 16; ++j) |
| dest[j * stride + i] = clip_pixel(ROUND_POWER_OF_TWO(temp_out[j], 6) |
| + dest[j * stride + i]); |
| } |
| } |
| |
| void vp9_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 = dct_const_round_shift(input[0] * cospi_16_64); |
| out = 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(dest[i] + a1); |
| dest += stride; |
| } |
| } |
| |
| static void idct32(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] = dct_const_round_shift(temp1); |
| step1[31] = 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] = dct_const_round_shift(temp1); |
| step1[30] = 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] = dct_const_round_shift(temp1); |
| step1[29] = 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] = dct_const_round_shift(temp1); |
| step1[28] = 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] = dct_const_round_shift(temp1); |
| step1[27] = 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] = dct_const_round_shift(temp1); |
| step1[26] = 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] = dct_const_round_shift(temp1); |
| step1[25] = 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] = dct_const_round_shift(temp1); |
| step1[24] = 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] = dct_const_round_shift(temp1); |
| step2[15] = 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] = dct_const_round_shift(temp1); |
| step2[14] = 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] = dct_const_round_shift(temp1); |
| step2[13] = 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] = dct_const_round_shift(temp1); |
| step2[12] = dct_const_round_shift(temp2); |
| |
| step2[16] = step1[16] + step1[17]; |
| step2[17] = step1[16] - step1[17]; |
| step2[18] = -step1[18] + step1[19]; |
| step2[19] = step1[18] + step1[19]; |
| step2[20] = step1[20] + step1[21]; |
| step2[21] = step1[20] - step1[21]; |
| step2[22] = -step1[22] + step1[23]; |
| step2[23] = step1[22] + step1[23]; |
| step2[24] = step1[24] + step1[25]; |
| step2[25] = step1[24] - step1[25]; |
| step2[26] = -step1[26] + step1[27]; |
| step2[27] = step1[26] + step1[27]; |
| step2[28] = step1[28] + step1[29]; |
| step2[29] = step1[28] - step1[29]; |
| step2[30] = -step1[30] + step1[31]; |
| step2[31] = 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] = dct_const_round_shift(temp1); |
| step1[7] = 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] = dct_const_round_shift(temp1); |
| step1[6] = dct_const_round_shift(temp2); |
| |
| step1[8] = step2[8] + step2[9]; |
| step1[9] = step2[8] - step2[9]; |
| step1[10] = -step2[10] + step2[11]; |
| step1[11] = step2[10] + step2[11]; |
| step1[12] = step2[12] + step2[13]; |
| step1[13] = step2[12] - step2[13]; |
| step1[14] = -step2[14] + step2[15]; |
| step1[15] = 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] = dct_const_round_shift(temp1); |
| step1[30] = 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] = dct_const_round_shift(temp1); |
| step1[29] = 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] = dct_const_round_shift(temp1); |
| step1[26] = 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] = dct_const_round_shift(temp1); |
| step1[25] = 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] = dct_const_round_shift(temp1); |
| step2[1] = 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] = dct_const_round_shift(temp1); |
| step2[3] = dct_const_round_shift(temp2); |
| step2[4] = step1[4] + step1[5]; |
| step2[5] = step1[4] - step1[5]; |
| step2[6] = -step1[6] + step1[7]; |
| step2[7] = 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] = dct_const_round_shift(temp1); |
| step2[14] = 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] = dct_const_round_shift(temp1); |
| step2[13] = dct_const_round_shift(temp2); |
| step2[11] = step1[11]; |
| step2[12] = step1[12]; |
| |
| step2[16] = step1[16] + step1[19]; |
| step2[17] = step1[17] + step1[18]; |
| step2[18] = step1[17] - step1[18]; |
| step2[19] = step1[16] - step1[19]; |
| step2[20] = -step1[20] + step1[23]; |
| step2[21] = -step1[21] + step1[22]; |
| step2[22] = step1[21] + step1[22]; |
| step2[23] = step1[20] + step1[23]; |
| |
| step2[24] = step1[24] + step1[27]; |
| step2[25] = step1[25] + step1[26]; |
| step2[26] = step1[25] - step1[26]; |
| step2[27] = step1[24] - step1[27]; |
| step2[28] = -step1[28] + step1[31]; |
| step2[29] = -step1[29] + step1[30]; |
| step2[30] = step1[29] + step1[30]; |
| step2[31] = step1[28] + step1[31]; |
| |
| // stage 5 |
| step1[0] = step2[0] + step2[3]; |
| step1[1] = step2[1] + step2[2]; |
| step1[2] = step2[1] - step2[2]; |
| step1[3] = 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] = dct_const_round_shift(temp1); |
| step1[6] = dct_const_round_shift(temp2); |
| step1[7] = step2[7]; |
| |
| step1[8] = step2[8] + step2[11]; |
| step1[9] = step2[9] + step2[10]; |
| step1[10] = step2[9] - step2[10]; |
| step1[11] = step2[8] - step2[11]; |
| step1[12] = -step2[12] + step2[15]; |
| step1[13] = -step2[13] + step2[14]; |
| step1[14] = step2[13] + step2[14]; |
| step1[15] = 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] = dct_const_round_shift(temp1); |
| step1[29] = 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] = dct_const_round_shift(temp1); |
| step1[28] = 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] = dct_const_round_shift(temp1); |
| step1[27] = 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] = dct_const_round_shift(temp1); |
| step1[26] = 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] = step1[0] + step1[7]; |
| step2[1] = step1[1] + step1[6]; |
| step2[2] = step1[2] + step1[5]; |
| step2[3] = step1[3] + step1[4]; |
| step2[4] = step1[3] - step1[4]; |
| step2[5] = step1[2] - step1[5]; |
| step2[6] = step1[1] - step1[6]; |
| step2[7] = 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] = dct_const_round_shift(temp1); |
| step2[13] = dct_const_round_shift(temp2); |
| temp1 = (-step1[11] + step1[12]) * cospi_16_64; |
| temp2 = (step1[11] + step1[12]) * cospi_16_64; |
| step2[11] = dct_const_round_shift(temp1); |
| step2[12] = dct_const_round_shift(temp2); |
| step2[14] = step1[14]; |
| step2[15] = step1[15]; |
| |
| step2[16] = step1[16] + step1[23]; |
| step2[17] = step1[17] + step1[22]; |
| step2[18] = step1[18] + step1[21]; |
| step2[19] = step1[19] + step1[20]; |
| step2[20] = step1[19] - step1[20]; |
| step2[21] = step1[18] - step1[21]; |
| step2[22] = step1[17] - step1[22]; |
| step2[23] = step1[16] - step1[23]; |
| |
| step2[24] = -step1[24] + step1[31]; |
| step2[25] = -step1[25] + step1[30]; |
| step2[26] = -step1[26] + step1[29]; |
| step2[27] = -step1[27] + step1[28]; |
| step2[28] = step1[27] + step1[28]; |
| step2[29] = step1[26] + step1[29]; |
| step2[30] = step1[25] + step1[30]; |
| step2[31] = step1[24] + step1[31]; |
| |
| // stage 7 |
| step1[0] = step2[0] + step2[15]; |
| step1[1] = step2[1] + step2[14]; |
| step1[2] = step2[2] + step2[13]; |
| step1[3] = step2[3] + step2[12]; |
| step1[4] = step2[4] + step2[11]; |
| step1[5] = step2[5] + step2[10]; |
| step1[6] = step2[6] + step2[9]; |
| step1[7] = step2[7] + step2[8]; |
| step1[8] = step2[7] - step2[8]; |
| step1[9] = step2[6] - step2[9]; |
| step1[10] = step2[5] - step2[10]; |
| step1[11] = step2[4] - step2[11]; |
| step1[12] = step2[3] - step2[12]; |
| step1[13] = step2[2] - step2[13]; |
| step1[14] = step2[1] - step2[14]; |
| step1[15] = 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] = dct_const_round_shift(temp1); |
| step1[27] = dct_const_round_shift(temp2); |
| temp1 = (-step2[21] + step2[26]) * cospi_16_64; |
| temp2 = (step2[21] + step2[26]) * cospi_16_64; |
| step1[21] = dct_const_round_shift(temp1); |
| step1[26] = dct_const_round_shift(temp2); |
| temp1 = (-step2[22] + step2[25]) * cospi_16_64; |
| temp2 = (step2[22] + step2[25]) * cospi_16_64; |
| step1[22] = dct_const_round_shift(temp1); |
| step1[25] = dct_const_round_shift(temp2); |
| temp1 = (-step2[23] + step2[24]) * cospi_16_64; |
| temp2 = (step2[23] + step2[24]) * cospi_16_64; |
| step1[23] = dct_const_round_shift(temp1); |
| step1[24] = 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] = step1[0] + step1[31]; |
| output[1] = step1[1] + step1[30]; |
| output[2] = step1[2] + step1[29]; |
| output[3] = step1[3] + step1[28]; |
| output[4] = step1[4] + step1[27]; |
| output[5] = step1[5] + step1[26]; |
| output[6] = step1[6] + step1[25]; |
| output[7] = step1[7] + step1[24]; |
| output[8] = step1[8] + step1[23]; |
| output[9] = step1[9] + step1[22]; |
| output[10] = step1[10] + step1[21]; |
| output[11] = step1[11] + step1[20]; |
| output[12] = step1[12] + step1[19]; |
| output[13] = step1[13] + step1[18]; |
| output[14] = step1[14] + step1[17]; |
| output[15] = step1[15] + step1[16]; |
| output[16] = step1[15] - step1[16]; |
| output[17] = step1[14] - step1[17]; |
| output[18] = step1[13] - step1[18]; |
| output[19] = step1[12] - step1[19]; |
| output[20] = step1[11] - step1[20]; |
| output[21] = step1[10] - step1[21]; |
| output[22] = step1[9] - step1[22]; |
| output[23] = step1[8] - step1[23]; |
| output[24] = step1[7] - step1[24]; |
| output[25] = step1[6] - step1[25]; |
| output[26] = step1[5] - step1[26]; |
| output[27] = step1[4] - step1[27]; |
| output[28] = step1[3] - step1[28]; |
| output[29] = step1[2] - step1[29]; |
| output[30] = step1[1] - step1[30]; |
| output[31] = step1[0] - step1[31]; |
| } |
| |
| void vp9_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]) |
| idct32(input, outptr); |
| else |
| vpx_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]; |
| idct32(temp_in, temp_out); |
| for (j = 0; j < 32; ++j) |
| dest[j * stride + i] = clip_pixel(ROUND_POWER_OF_TWO(temp_out[j], 6) |
| + dest[j * stride + i]); |
| } |
| } |
| |
| void vp9_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) { |
| idct32(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]; |
| idct32(temp_in, temp_out); |
| for (j = 0; j < 32; ++j) |
| dest[j * stride + i] = clip_pixel(ROUND_POWER_OF_TWO(temp_out[j], 6) |
| + dest[j * stride + i]); |
| } |
| } |
| |
| void vp9_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 = dct_const_round_shift(input[0] * cospi_16_64); |
| out = 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(dest[i] + a1); |
| dest += stride; |
| } |
| } |
| |
| // idct |
| void vp9_idct4x4_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob) { |
| if (eob > 1) |
| vp9_idct4x4_16_add(input, dest, stride); |
| else |
| vp9_idct4x4_1_add(input, dest, stride); |
| } |
| |
| |
| void vp9_iwht4x4_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob) { |
| if (eob > 1) |
| vp9_iwht4x4_16_add(input, dest, stride); |
| else |
| vp9_iwht4x4_1_add(input, dest, stride); |
| } |
| |
| void vp9_idct8x8_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob) { |
| // If dc is 1, then input[0] is the reconstructed value, do not need |
| // dequantization. Also, when dc is 1, dc is counted in eobs, namely eobs >=1. |
| |
| // The calculation can be simplified if there are not many non-zero dct |
| // coefficients. Use eobs to decide what to do. |
| // TODO(yunqingwang): "eobs = 1" case is also handled in vp9_short_idct8x8_c. |
| // Combine that with code here. |
| if (eob == 1) |
| // DC only DCT coefficient |
| vp9_idct8x8_1_add(input, dest, stride); |
| else if (eob <= 12) |
| vp9_idct8x8_12_add(input, dest, stride); |
| else |
| vp9_idct8x8_64_add(input, dest, stride); |
| } |
| |
| void vp9_idct16x16_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob) { |
| /* The calculation can be simplified if there are not many non-zero dct |
| * coefficients. Use eobs to separate different cases. */ |
| if (eob == 1) |
| /* DC only DCT coefficient. */ |
| vp9_idct16x16_1_add(input, dest, stride); |
| else if (eob <= 10) |
| vp9_idct16x16_10_add(input, dest, stride); |
| else |
| vp9_idct16x16_256_add(input, dest, stride); |
| } |
| |
| void vp9_idct32x32_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob) { |
| if (eob == 1) |
| vp9_idct32x32_1_add(input, dest, stride); |
| else if (eob <= 34) |
| // non-zero coeff only in upper-left 8x8 |
| vp9_idct32x32_34_add(input, dest, stride); |
| else |
| vp9_idct32x32_1024_add(input, dest, stride); |
| } |
| |
| // iht |
| void vp9_iht4x4_add(TX_TYPE tx_type, const tran_low_t *input, uint8_t *dest, |
| int stride, int eob) { |
| if (tx_type == DCT_DCT) |
| vp9_idct4x4_add(input, dest, stride, eob); |
| else |
| vp9_iht4x4_16_add(input, dest, stride, tx_type); |
| } |
| |
| void vp9_iht8x8_add(TX_TYPE tx_type, const tran_low_t *input, uint8_t *dest, |
| int stride, int eob) { |
| if (tx_type == DCT_DCT) { |
| vp9_idct8x8_add(input, dest, stride, eob); |
| } else { |
| vp9_iht8x8_64_add(input, dest, stride, tx_type); |
| } |
| } |
| |
| void vp9_iht16x16_add(TX_TYPE tx_type, const tran_low_t *input, uint8_t *dest, |
| int stride, int eob) { |
| if (tx_type == DCT_DCT) { |
| vp9_idct16x16_add(input, dest, stride, eob); |
| } else { |
| vp9_iht16x16_256_add(input, dest, stride, tx_type); |
| } |
| } |
| |
| #if CONFIG_VP9_HIGHBITDEPTH |
| void vp9_high_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] = 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_bd_high(dest[stride * 0], a1, bd); |
| dest[stride * 1] = clip_pixel_bd_high(dest[stride * 1], b1, bd); |
| dest[stride * 2] = clip_pixel_bd_high(dest[stride * 2], c1, bd); |
| dest[stride * 3] = clip_pixel_bd_high(dest[stride * 3], d1, bd); |
| |
| ip++; |
| dest++; |
| } |
| } |
| |
| static void high_idct4(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] = 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 vp9_high_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] = 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_bd_high(dest[dest_stride * 0], a1, bd); |
| dest[dest_stride * 1] = clip_pixel_bd_high(dest[dest_stride * 1], e1, bd); |
| dest[dest_stride * 2] = clip_pixel_bd_high(dest[dest_stride * 2], e1, bd); |
| dest[dest_stride * 3] = clip_pixel_bd_high(dest[dest_stride * 3], e1, bd); |
| ip++; |
| dest++; |
| } |
| } |
| |
| void vp9_high_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) { |
| high_idct4(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]; |
| high_idct4(temp_in, temp_out, bd); |
| for (j = 0; j < 4; ++j) |
| dest[j * stride + i] = clip_pixel_bd_high( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 4), bd); |
| } |
| } |
| |
| void vp9_high_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 = WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64)); |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| 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_bd_high(dest[0], a1, bd); |
| dest[1] = clip_pixel_bd_high(dest[1], a1, bd); |
| dest[2] = clip_pixel_bd_high(dest[2], a1, bd); |
| dest[3] = clip_pixel_bd_high(dest[3], a1, bd); |
| dest += dest_stride; |
| } |
| } |
| |
| static void high_idct8(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] = 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 & stage 3 - even half |
| high_idct4(step1, step1, bd); |
| |
| // stage 2 - odd half |
| 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 - odd half |
| 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 vp9_high_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) { |
| high_idct8(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]; |
| high_idct8(temp_in, temp_out, bd); |
| for (j = 0; j < 8; ++j) |
| dest[j * stride + i] = clip_pixel_bd_high(dest[j * stride + i], |
| ROUND_POWER_OF_TWO(temp_out[j], 5), |
| bd); |
| } |
| } |
| |
| void vp9_high_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 = WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64)); |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| 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_bd_high(dest[i], a1, bd); |
| dest += stride; |
| } |
| } |
| |
| static void high_iadst4(const tran_low_t *input, tran_low_t *output, int bd) { |
| tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; |
| |
| tran_high_t x0 = input[0]; |
| tran_high_t x1 = input[1]; |
| tran_high_t x2 = input[2]; |
| tran_high_t x3 = input[3]; |
| (void) bd; |
| |
| if (!(x0 | x1 | x2 | x3)) { |
| vpx_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 = x0 - x2 + x3; |
| |
| x0 = s0 + s3 + s5; |
| x1 = s1 - s4 - s6; |
| x2 = sinpi_3_9 * s7; |
| x3 = s2; |
| |
| s0 = x0 + x3; |
| s1 = x1 + x3; |
| s2 = x2; |
| s3 = x0 + x1 - x3; |
| |
| // 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)); |
| output[1] = WRAPLOW(dct_const_round_shift(s1)); |
| output[2] = WRAPLOW(dct_const_round_shift(s2)); |
| output[3] = WRAPLOW(dct_const_round_shift(s3)); |
| } |
| |
| void vp9_high_iht4x4_16_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int tx_type, int bd) { |
| const high_transform_2d IHT_4[] = { |
| { high_idct4, high_idct4 }, // DCT_DCT = 0 |
| { high_iadst4, high_idct4 }, // ADST_DCT = 1 |
| { high_idct4, high_iadst4 }, // DCT_ADST = 2 |
| { high_iadst4, high_iadst4 } // ADST_ADST = 3 |
| }; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| int i, j; |
| tran_low_t out[4 * 4]; |
| tran_low_t *outptr = out; |
| tran_low_t temp_in[4], temp_out[4]; |
| |
| // Inverse transform row vectors. |
| for (i = 0; i < 4; ++i) { |
| IHT_4[tx_type].rows(input, outptr, bd); |
| input += 4; |
| outptr += 4; |
| } |
| |
| // Inverse transform column vectors. |
| for (i = 0; i < 4; ++i) { |
| for (j = 0; j < 4; ++j) |
| temp_in[j] = out[j * 4 + i]; |
| IHT_4[tx_type].cols(temp_in, temp_out, bd); |
| for (j = 0; j < 4; ++j) |
| dest[j * stride + i] = clip_pixel_bd_high( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 4), bd); |
| } |
| } |
| |
| static void high_iadst8(const tran_low_t *input, tran_low_t *output, int bd) { |
| tran_high_t s0, s1, s2, s3, s4, s5, s6, s7; |
| |
| tran_high_t x0 = input[7]; |
| tran_high_t x1 = input[0]; |
| tran_high_t x2 = input[5]; |
| tran_high_t x3 = input[2]; |
| tran_high_t x4 = input[3]; |
| tran_high_t x5 = input[4]; |
| tran_high_t x6 = input[1]; |
| tran_high_t x7 = input[6]; |
| (void) bd; |
| |
| if (!(x0 | x1 | x2 | x3 | x4 | x5 | x6 | x7)) { |
| vpx_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 = 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 = 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 = s0 + s2; |
| x1 = s1 + s3; |
| x2 = s0 - s2; |
| x3 = 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 = cospi_16_64 * (x2 + x3); |
| s3 = cospi_16_64 * (x2 - x3); |
| s6 = cospi_16_64 * (x6 + x7); |
| s7 = 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); |
| } |
| |
| static const high_transform_2d HIGH_IHT_8[] = { |
| { high_idct8, high_idct8 }, // DCT_DCT = 0 |
| { high_iadst8, high_idct8 }, // ADST_DCT = 1 |
| { high_idct8, high_iadst8 }, // DCT_ADST = 2 |
| { high_iadst8, high_iadst8 } // ADST_ADST = 3 |
| }; |
| |
| void vp9_high_iht8x8_64_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int tx_type, int bd) { |
| int i, j; |
| tran_low_t out[8 * 8]; |
| tran_low_t *outptr = out; |
| tran_low_t temp_in[8], temp_out[8]; |
| const high_transform_2d ht = HIGH_IHT_8[tx_type]; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| // Inverse transform row vectors. |
| for (i = 0; i < 8; ++i) { |
| ht.rows(input, outptr, bd); |
| input += 8; |
| outptr += 8; |
| } |
| |
| // Inverse transform column vectors. |
| for (i = 0; i < 8; ++i) { |
| for (j = 0; j < 8; ++j) |
| temp_in[j] = out[j * 8 + i]; |
| ht.cols(temp_in, temp_out, bd); |
| for (j = 0; j < 8; ++j) |
| dest[j * stride + i] = clip_pixel_bd_high( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 5), bd); |
| } |
| } |
| |
| void vp9_high_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) { |
| high_idct8(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]; |
| high_idct8(temp_in, temp_out, bd); |
| for (j = 0; j < 8; ++j) |
| dest[j * stride + i] = clip_pixel_bd_high( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 5), bd); |
| } |
| } |
| |
| static void high_idct16(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] = 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 vp9_high_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) { |
| high_idct16(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]; |
| high_idct16(temp_in, temp_out, bd); |
| for (j = 0; j < 16; ++j) |
| dest[j * stride + i] = clip_pixel_bd_high( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6), bd); |
| } |
| } |
| |
| static void high_iadst16(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_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]; |
| (void) bd; |
| |
| if (!(x0 | x1 | x2 | x3 | x4 | x5 | x6 | x7 | x8 |
| | x9 | x10 | x11 | x12 | x13 | x14 | x15)) { |
| vpx_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 = 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); |
| } |
| |
| static const high_transform_2d HIGH_IHT_16[] = { |
| { high_idct16, high_idct16 }, // DCT_DCT = 0 |
| { high_iadst16, high_idct16 }, // ADST_DCT = 1 |
| { high_idct16, high_iadst16 }, // DCT_ADST = 2 |
| { high_iadst16, high_iadst16 } // ADST_ADST = 3 |
| }; |
| |
| void vp9_high_iht16x16_256_add_c(const tran_low_t *input, uint8_t *dest8, |
| int stride, int tx_type, int bd) { |
| int i, j; |
| tran_low_t out[16 * 16]; |
| tran_low_t *outptr = out; |
| tran_low_t temp_in[16], temp_out[16]; |
| const high_transform_2d ht = HIGH_IHT_16[tx_type]; |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| // Rows |
| for (i = 0; i < 16; ++i) { |
| ht.rows(input, outptr, bd); |
| input += 16; |
| outptr += 16; |
| } |
| |
| // Columns |
| for (i = 0; i < 16; ++i) { |
| for (j = 0; j < 16; ++j) |
| temp_in[j] = out[j * 16 + i]; |
| ht.cols(temp_in, temp_out, bd); |
| for (j = 0; j < 16; ++j) |
| dest[j * stride + i] = clip_pixel_bd_high( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6), bd); |
| } |
| } |
| |
| void vp9_high_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) { |
| high_idct16(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]; |
| high_idct16(temp_in, temp_out, bd); |
| for (j = 0; j < 16; ++j) |
| dest[j * stride + i] = clip_pixel_bd_high( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6), bd); |
| } |
| } |
| |
| void vp9_high_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 = WRAPLOW(dct_const_round_shift(input[0] * cospi_16_64)); |
| uint16_t *dest = CONVERT_TO_SHORTPTR(dest8); |
| |
| 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_bd_high(dest[i], a1, bd); |
| dest += stride; |
| } |
| } |
| |
| static void high_idct32(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] = 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] = WRAPLOW(step1[14]); |
| step2[15] = WRAPLOW(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 vp9_high_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]) |
| high_idct32(input, outptr, bd); |
| else |
| vpx_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]; |
| high_idct32(temp_in, temp_out, bd); |
| for (j = 0; j < 32; ++j) |
| dest[j * stride + i] = clip_pixel_bd_high( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6), bd); |
| } |
| } |
| |
| void vp9_high_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) { |
| high_idct32(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]; |
| high_idct32(temp_in, temp_out, bd); |
| for (j = 0; j < 32; ++j) |
| dest[j * stride + i] = clip_pixel_bd_high( |
| dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6), bd); |
| } |
| } |
| |
| void vp9_high_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 = 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_bd_high(dest[i], a1, bd); |
| dest += stride; |
| } |
| } |
| |
| // idct |
| void vp9_high_idct4x4_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob, int bd) { |
| if (eob > 1) |
| vp9_high_idct4x4_16_add(input, dest, stride, bd); |
| else |
| vp9_high_idct4x4_1_add(input, dest, stride, bd); |
| } |
| |
| |
| void vp9_high_iwht4x4_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob, int bd) { |
| if (eob > 1) |
| vp9_high_iwht4x4_16_add(input, dest, stride, bd); |
| else |
| vp9_high_iwht4x4_1_add(input, dest, stride, bd); |
| } |
| |
| void vp9_high_idct8x8_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob, int bd) { |
| // If dc is 1, then input[0] is the reconstructed value, do not need |
| // dequantization. Also, when dc is 1, dc is counted in eobs, namely eobs >=1. |
| |
| // The calculation can be simplified if there are not many non-zero dct |
| // coefficients. Use eobs to decide what to do. |
| // TODO(yunqingwang): "eobs = 1" case is also handled in vp9_short_idct8x8_c. |
| // Combine that with code here. |
| // DC only DCT coefficient |
| if (eob == 1) { |
| vp9_high_idct8x8_1_add(input, dest, stride, bd); |
| } else if (eob <= 10) { |
| vp9_high_idct8x8_10_add(input, dest, stride, bd); |
| } else { |
| vp9_high_idct8x8_64_add(input, dest, stride, bd); |
| } |
| } |
| |
| void vp9_high_idct16x16_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob, int bd) { |
| // The calculation can be simplified if there are not many non-zero dct |
| // coefficients. Use eobs to separate different cases. |
| // DC only DCT coefficient. |
| if (eob == 1) { |
| vp9_high_idct16x16_1_add(input, dest, stride, bd); |
| } else if (eob <= 10) { |
| vp9_high_idct16x16_10_add(input, dest, stride, bd); |
| } else { |
| vp9_high_idct16x16_256_add(input, dest, stride, bd); |
| } |
| } |
| |
| void vp9_high_idct32x32_add(const tran_low_t *input, uint8_t *dest, int stride, |
| int eob, int bd) { |
| // Non-zero coeff only in upper-left 8x8 |
| if (eob == 1) { |
| vp9_high_idct32x32_1_add(input, dest, stride, bd); |
| } else if (eob <= 34) { |
| vp9_high_idct32x32_34_add(input, dest, stride, bd); |
| } else { |
| vp9_high_idct32x32_1024_add(input, dest, stride, bd); |
| } |
| } |
| |
| // iht |
| void vp9_high_iht4x4_add(TX_TYPE tx_type, const tran_low_t *input, |
| uint8_t *dest, int stride, int eob, int bd) { |
| if (tx_type == DCT_DCT) |
| vp9_high_idct4x4_add(input, dest, stride, eob, bd); |
| else |
| vp9_high_iht4x4_16_add(input, dest, stride, tx_type, bd); |
| } |
| |
| void vp9_high_iht8x8_add(TX_TYPE tx_type, const tran_low_t *input, |
| uint8_t *dest, int stride, int eob, int bd) { |
| if (tx_type == DCT_DCT) { |
| vp9_high_idct8x8_add(input, dest, stride, eob, bd); |
| } else { |
| vp9_high_iht8x8_64_add(input, dest, stride, tx_type, bd); |
| } |
| } |
| |
| void vp9_high_iht16x16_add(TX_TYPE tx_type, const tran_low_t *input, |
| uint8_t *dest, int stride, int eob, int bd) { |
| if (tx_type == DCT_DCT) { |
| vp9_high_idct16x16_add(input, dest, stride, eob, bd); |
| } else { |
| vp9_high_iht16x16_256_add(input, dest, stride, tx_type, bd); |
| } |
| } |
| #endif // CONFIG_VP9_HIGHBITDEPTH |
