/*
* Copyright (c) 2015 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 <stdlib.h>
#include <string.h>
#include "./vpx_dsp_rtcd.h"
#include "vpx_dsp/inv_txfm.h"
void vpx_iwht4x4_16_add_c(const tran_low_t *input, uint8_t *dest, int stride) {
/* 4-point reversible, orthonormal inverse Walsh-Hadamard in 3.5 adds,
0.5 shifts per pixel. */
int i;
tran_low_t output[16 ];
tran_high_t a1, b1, c1, d1, e1;
const tran_low_t *ip = input;
tran_low_t *op = output;
for (i = 0 ; i < 4 ; i++) {
a1 = ip[0 ] >> UNIT_QUANT_SHIFT;
c1 = ip[1 ] >> UNIT_QUANT_SHIFT;
d1 = ip[2 ] >> UNIT_QUANT_SHIFT;
b1 = ip[3 ] >> UNIT_QUANT_SHIFT;
a1 += c1;
d1 -= b1;
e1 = (a1 - d1) >> 1 ;
b1 = e1 - b1;
c1 = e1 - c1;
a1 -= b1;
d1 += c1;
op[0 ] = WRAPLOW(a1);
op[1 ] = WRAPLOW(b1);
op[2 ] = WRAPLOW(c1);
op[3 ] = WRAPLOW(d1);
ip += 4 ;
op += 4 ;
}
ip = output;
for (i = 0 ; i < 4 ; i++) {
a1 = ip[4 * 0 ];
c1 = ip[4 * 1 ];
d1 = ip[4 * 2 ];
b1 = ip[4 * 3 ];
a1 += c1;
d1 -= b1;
e1 = (a1 - d1) >> 1 ;
b1 = e1 - b1;
c1 = e1 - c1;
a1 -= b1;
d1 += c1;
dest[stride * 0 ] = clip_pixel_add(dest[stride * 0 ], WRAPLOW(a1));
dest[stride * 1 ] = clip_pixel_add(dest[stride * 1 ], WRAPLOW(b1));
dest[stride * 2 ] = clip_pixel_add(dest[stride * 2 ], WRAPLOW(c1));
dest[stride * 3 ] = clip_pixel_add(dest[stride * 3 ], WRAPLOW(d1));
ip++;
dest++;
}
}
void vpx_iwht4x4_1_add_c(const tran_low_t *input, uint8_t *dest, int stride) {
int i;
tran_high_t a1, e1;
tran_low_t tmp[4 ];
const tran_low_t *ip = input;
tran_low_t *op = tmp;
a1 = ip[0 ] >> UNIT_QUANT_SHIFT;
e1 = a1 >> 1 ;
a1 -= e1;
op[0 ] = WRAPLOW(a1);
op[1 ] = op[2 ] = op[3 ] = WRAPLOW(e1);
ip = tmp;
for (i = 0 ; i < 4 ; i++) {
e1 = ip[0 ] >> 1 ;
a1 = ip[0 ] - e1;
dest[stride * 0 ] = clip_pixel_add(dest[stride * 0 ], a1);
dest[stride * 1 ] = clip_pixel_add(dest[stride * 1 ], e1);
dest[stride * 2 ] = clip_pixel_add(dest[stride * 2 ], e1);
dest[stride * 3 ] = clip_pixel_add(dest[stride * 3 ], e1);
ip++;
dest++;
}
}
void iadst4_c(const tran_low_t *input, tran_low_t *output) {
tran_high_t s0, s1, s2, s3, s4, s5, s6, s7;
tran_low_t x0 = input[0 ];
tran_low_t x1 = input[1 ];
tran_low_t x2 = input[2 ];
tran_low_t x3 = input[3 ];
if (!(x0 | x1 | x2 | x3)) {
memset(output, 0 , 4 * sizeof (*output));
return ;
}
// 32-bit result is enough for the following multiplications.
s0 = sinpi_1_9 * x0;
s1 = sinpi_2_9 * x0;
s2 = sinpi_3_9 * x1;
s3 = sinpi_4_9 * x2;
s4 = sinpi_1_9 * x2;
s5 = sinpi_2_9 * x3;
s6 = sinpi_4_9 * x3;
s7 = WRAPLOW(x0 - x2 + x3);
s0 = s0 + s3 + s5;
s1 = s1 - s4 - s6;
s3 = s2;
s2 = sinpi_3_9 * s7;
// 1-D transform scaling factor is sqrt(2).
// The overall dynamic range is 14b (input) + 14b (multiplication scaling)
// + 1b (addition) = 29b.
// Hence the output bit depth is 15b.
output[0 ] = WRAPLOW(dct_const_round_shift(s0 + s3));
output[1 ] = WRAPLOW(dct_const_round_shift(s1 + s3));
output[2 ] = WRAPLOW(dct_const_round_shift(s2));
output[3 ] = WRAPLOW(dct_const_round_shift(s0 + s1 - s3));
}
void idct4_c(const tran_low_t *input, tran_low_t *output) {
int16_t step[4 ];
tran_high_t temp1, temp2;
// stage 1
temp1 = ((int16_t)input[0 ] + (int16_t)input[2 ]) * cospi_16_64;
temp2 = ((int16_t)input[0 ] - (int16_t)input[2 ]) * cospi_16_64;
step[0 ] = WRAPLOW(dct_const_round_shift(temp1));
step[1 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (int16_t)input[1 ] * cospi_24_64 - (int16_t)input[3 ] * cospi_8_64;
temp2 = (int16_t)input[1 ] * cospi_8_64 + (int16_t)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 vpx_idct4x4_16_add_c(const tran_low_t *input, uint8_t *dest, int stride) {
int i, j;
tran_low_t out[4 * 4 ];
tran_low_t *outptr = out;
tran_low_t temp_in[4 ], temp_out[4 ];
// Rows
for (i = 0 ; i < 4 ; ++i) {
idct4_c(input, outptr);
input += 4 ;
outptr += 4 ;
}
// Columns
for (i = 0 ; i < 4 ; ++i) {
for (j = 0 ; j < 4 ; ++j) temp_in[j] = out[j * 4 + i];
idct4_c(temp_in, temp_out);
for (j = 0 ; j < 4 ; ++j) {
dest[j * stride + i] = clip_pixel_add(dest[j * stride + i],
ROUND_POWER_OF_TWO(temp_out[j], 4 ));
}
}
}
void vpx_idct4x4_1_add_c(const tran_low_t *input, uint8_t *dest, int stride) {
int i;
tran_high_t a1;
tran_low_t out =
WRAPLOW(dct_const_round_shift((int16_t)input[0 ] * cospi_16_64));
out = WRAPLOW(dct_const_round_shift(out * cospi_16_64));
a1 = ROUND_POWER_OF_TWO(out, 4 );
for (i = 0 ; i < 4 ; i++) {
dest[0 ] = clip_pixel_add(dest[0 ], a1);
dest[1 ] = clip_pixel_add(dest[1 ], a1);
dest[2 ] = clip_pixel_add(dest[2 ], a1);
dest[3 ] = clip_pixel_add(dest[3 ], a1);
dest += stride;
}
}
void iadst8_c(const tran_low_t *input, tran_low_t *output) {
int s0, s1, s2, s3, s4, s5, s6, s7;
tran_high_t x0 = input[7 ];
tran_high_t x1 = input[0 ];
tran_high_t x2 = input[5 ];
tran_high_t x3 = input[2 ];
tran_high_t x4 = input[3 ];
tran_high_t x5 = input[4 ];
tran_high_t x6 = input[1 ];
tran_high_t x7 = input[6 ];
if (!(x0 | x1 | x2 | x3 | x4 | x5 | x6 | x7)) {
memset(output, 0 , 8 * sizeof (*output));
return ;
}
// stage 1
s0 = (int )(cospi_2_64 * x0 + cospi_30_64 * x1);
s1 = (int )(cospi_30_64 * x0 - cospi_2_64 * x1);
s2 = (int )(cospi_10_64 * x2 + cospi_22_64 * x3);
s3 = (int )(cospi_22_64 * x2 - cospi_10_64 * x3);
s4 = (int )(cospi_18_64 * x4 + cospi_14_64 * x5);
s5 = (int )(cospi_14_64 * x4 - cospi_18_64 * x5);
s6 = (int )(cospi_26_64 * x6 + cospi_6_64 * x7);
s7 = (int )(cospi_6_64 * x6 - cospi_26_64 * x7);
x0 = WRAPLOW(dct_const_round_shift(s0 + s4));
x1 = WRAPLOW(dct_const_round_shift(s1 + s5));
x2 = WRAPLOW(dct_const_round_shift(s2 + s6));
x3 = WRAPLOW(dct_const_round_shift(s3 + s7));
x4 = WRAPLOW(dct_const_round_shift(s0 - s4));
x5 = WRAPLOW(dct_const_round_shift(s1 - s5));
x6 = WRAPLOW(dct_const_round_shift(s2 - s6));
x7 = WRAPLOW(dct_const_round_shift(s3 - s7));
// stage 2
s0 = (int )x0;
s1 = (int )x1;
s2 = (int )x2;
s3 = (int )x3;
s4 = (int )(cospi_8_64 * x4 + cospi_24_64 * x5);
s5 = (int )(cospi_24_64 * x4 - cospi_8_64 * x5);
s6 = (int )(-cospi_24_64 * x6 + cospi_8_64 * x7);
s7 = (int )(cospi_8_64 * x6 + cospi_24_64 * x7);
x0 = WRAPLOW(s0 + s2);
x1 = WRAPLOW(s1 + s3);
x2 = WRAPLOW(s0 - s2);
x3 = WRAPLOW(s1 - s3);
x4 = WRAPLOW(dct_const_round_shift(s4 + s6));
x5 = WRAPLOW(dct_const_round_shift(s5 + s7));
x6 = WRAPLOW(dct_const_round_shift(s4 - s6));
x7 = WRAPLOW(dct_const_round_shift(s5 - s7));
// stage 3
s2 = (int )(cospi_16_64 * (x2 + x3));
s3 = (int )(cospi_16_64 * (x2 - x3));
s6 = (int )(cospi_16_64 * (x6 + x7));
s7 = (int )(cospi_16_64 * (x6 - x7));
x2 = WRAPLOW(dct_const_round_shift(s2));
x3 = WRAPLOW(dct_const_round_shift(s3));
x6 = WRAPLOW(dct_const_round_shift(s6));
x7 = WRAPLOW(dct_const_round_shift(s7));
output[0 ] = WRAPLOW(x0);
output[1 ] = WRAPLOW(-x4);
output[2 ] = WRAPLOW(x6);
output[3 ] = WRAPLOW(-x2);
output[4 ] = WRAPLOW(x3);
output[5 ] = WRAPLOW(-x7);
output[6 ] = WRAPLOW(x5);
output[7 ] = WRAPLOW(-x1);
}
void idct8_c(const tran_low_t *input, tran_low_t *output) {
int16_t step1[8 ], step2[8 ];
tran_high_t temp1, temp2;
// stage 1
step1[0 ] = (int16_t)input[0 ];
step1[2 ] = (int16_t)input[4 ];
step1[1 ] = (int16_t)input[2 ];
step1[3 ] = (int16_t)input[6 ];
temp1 = (int16_t)input[1 ] * cospi_28_64 - (int16_t)input[7 ] * cospi_4_64;
temp2 = (int16_t)input[1 ] * cospi_4_64 + (int16_t)input[7 ] * cospi_28_64;
step1[4 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[7 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (int16_t)input[5 ] * cospi_12_64 - (int16_t)input[3 ] * cospi_20_64;
temp2 = (int16_t)input[5 ] * cospi_20_64 + (int16_t)input[3 ] * cospi_12_64;
step1[5 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[6 ] = WRAPLOW(dct_const_round_shift(temp2));
// stage 2
temp1 = (step1[0 ] + step1[2 ]) * cospi_16_64;
temp2 = (step1[0 ] - step1[2 ]) * cospi_16_64;
step2[0 ] = WRAPLOW(dct_const_round_shift(temp1));
step2[1 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = step1[1 ] * cospi_24_64 - step1[3 ] * cospi_8_64;
temp2 = step1[1 ] * cospi_8_64 + step1[3 ] * cospi_24_64;
step2[2 ] = WRAPLOW(dct_const_round_shift(temp1));
step2[3 ] = WRAPLOW(dct_const_round_shift(temp2));
step2[4 ] = WRAPLOW(step1[4 ] + step1[5 ]);
step2[5 ] = WRAPLOW(step1[4 ] - step1[5 ]);
step2[6 ] = WRAPLOW(-step1[6 ] + step1[7 ]);
step2[7 ] = WRAPLOW(step1[6 ] + step1[7 ]);
// stage 3
step1[0 ] = WRAPLOW(step2[0 ] + step2[3 ]);
step1[1 ] = WRAPLOW(step2[1 ] + step2[2 ]);
step1[2 ] = WRAPLOW(step2[1 ] - step2[2 ]);
step1[3 ] = WRAPLOW(step2[0 ] - step2[3 ]);
step1[4 ] = step2[4 ];
temp1 = (step2[6 ] - step2[5 ]) * cospi_16_64;
temp2 = (step2[5 ] + step2[6 ]) * cospi_16_64;
step1[5 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[6 ] = WRAPLOW(dct_const_round_shift(temp2));
step1[7 ] = step2[7 ];
// stage 4
output[0 ] = WRAPLOW(step1[0 ] + step1[7 ]);
output[1 ] = WRAPLOW(step1[1 ] + step1[6 ]);
output[2 ] = WRAPLOW(step1[2 ] + step1[5 ]);
output[3 ] = WRAPLOW(step1[3 ] + step1[4 ]);
output[4 ] = WRAPLOW(step1[3 ] - step1[4 ]);
output[5 ] = WRAPLOW(step1[2 ] - step1[5 ]);
output[6 ] = WRAPLOW(step1[1 ] - step1[6 ]);
output[7 ] = WRAPLOW(step1[0 ] - step1[7 ]);
}
void vpx_idct8x8_64_add_c(const tran_low_t *input, uint8_t *dest, int stride) {
int i, j;
tran_low_t out[8 * 8 ];
tran_low_t *outptr = out;
tran_low_t temp_in[8 ], temp_out[8 ];
// First transform rows
for (i = 0 ; i < 8 ; ++i) {
idct8_c(input, outptr);
input += 8 ;
outptr += 8 ;
}
// Then transform columns
for (i = 0 ; i < 8 ; ++i) {
for (j = 0 ; j < 8 ; ++j) temp_in[j] = out[j * 8 + i];
idct8_c(temp_in, temp_out);
for (j = 0 ; j < 8 ; ++j) {
dest[j * stride + i] = clip_pixel_add(dest[j * stride + i],
ROUND_POWER_OF_TWO(temp_out[j], 5 ));
}
}
}
void vpx_idct8x8_12_add_c(const tran_low_t *input, uint8_t *dest, int stride) {
int i, j;
tran_low_t out[8 * 8 ] = { 0 };
tran_low_t *outptr = out;
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_c(input, outptr);
input += 8 ;
outptr += 8 ;
}
// Then transform columns
for (i = 0 ; i < 8 ; ++i) {
for (j = 0 ; j < 8 ; ++j) temp_in[j] = out[j * 8 + i];
idct8_c(temp_in, temp_out);
for (j = 0 ; j < 8 ; ++j) {
dest[j * stride + i] = clip_pixel_add(dest[j * stride + i],
ROUND_POWER_OF_TWO(temp_out[j], 5 ));
}
}
}
void vpx_idct8x8_1_add_c(const tran_low_t *input, uint8_t *dest, int stride) {
int i, j;
tran_high_t a1;
tran_low_t out =
WRAPLOW(dct_const_round_shift((int16_t)input[0 ] * cospi_16_64));
out = WRAPLOW(dct_const_round_shift(out * cospi_16_64));
a1 = ROUND_POWER_OF_TWO(out, 5 );
for (j = 0 ; j < 8 ; ++j) {
for (i = 0 ; i < 8 ; ++i) dest[i] = clip_pixel_add(dest[i], a1);
dest += stride;
}
}
void iadst16_c(const tran_low_t *input, tran_low_t *output) {
tran_high_t s0, s1, s2, s3, s4, s5, s6, s7, s8;
tran_high_t s9, s10, s11, s12, s13, s14, s15;
tran_high_t x0 = input[15 ];
tran_high_t x1 = input[0 ];
tran_high_t x2 = input[13 ];
tran_high_t x3 = input[2 ];
tran_high_t x4 = input[11 ];
tran_high_t x5 = input[4 ];
tran_high_t x6 = input[9 ];
tran_high_t x7 = input[6 ];
tran_high_t x8 = input[7 ];
tran_high_t x9 = input[8 ];
tran_high_t x10 = input[5 ];
tran_high_t x11 = input[10 ];
tran_high_t x12 = input[3 ];
tran_high_t x13 = input[12 ];
tran_high_t x14 = input[1 ];
tran_high_t x15 = input[14 ];
if (!(x0 | x1 | x2 | x3 | x4 | x5 | x6 | x7 | x8 | x9 | x10 | x11 | x12 |
x13 | x14 | x15)) {
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);
}
void idct16_c(const tran_low_t *input, tran_low_t *output) {
int16_t step1[16 ], step2[16 ];
tran_high_t temp1, temp2;
// stage 1
step1[0 ] = (int16_t)input[0 / 2 ];
step1[1 ] = (int16_t)input[16 / 2 ];
step1[2 ] = (int16_t)input[8 / 2 ];
step1[3 ] = (int16_t)input[24 / 2 ];
step1[4 ] = (int16_t)input[4 / 2 ];
step1[5 ] = (int16_t)input[20 / 2 ];
step1[6 ] = (int16_t)input[12 / 2 ];
step1[7 ] = (int16_t)input[28 / 2 ];
step1[8 ] = (int16_t)input[2 / 2 ];
step1[9 ] = (int16_t)input[18 / 2 ];
step1[10 ] = (int16_t)input[10 / 2 ];
step1[11 ] = (int16_t)input[26 / 2 ];
step1[12 ] = (int16_t)input[6 / 2 ];
step1[13 ] = (int16_t)input[22 / 2 ];
step1[14 ] = (int16_t)input[14 / 2 ];
step1[15 ] = (int16_t)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 ] = (tran_low_t)WRAPLOW(step2[0 ] + step2[15 ]);
output[1 ] = (tran_low_t)WRAPLOW(step2[1 ] + step2[14 ]);
output[2 ] = (tran_low_t)WRAPLOW(step2[2 ] + step2[13 ]);
output[3 ] = (tran_low_t)WRAPLOW(step2[3 ] + step2[12 ]);
output[4 ] = (tran_low_t)WRAPLOW(step2[4 ] + step2[11 ]);
output[5 ] = (tran_low_t)WRAPLOW(step2[5 ] + step2[10 ]);
output[6 ] = (tran_low_t)WRAPLOW(step2[6 ] + step2[9 ]);
output[7 ] = (tran_low_t)WRAPLOW(step2[7 ] + step2[8 ]);
output[8 ] = (tran_low_t)WRAPLOW(step2[7 ] - step2[8 ]);
output[9 ] = (tran_low_t)WRAPLOW(step2[6 ] - step2[9 ]);
output[10 ] = (tran_low_t)WRAPLOW(step2[5 ] - step2[10 ]);
output[11 ] = (tran_low_t)WRAPLOW(step2[4 ] - step2[11 ]);
output[12 ] = (tran_low_t)WRAPLOW(step2[3 ] - step2[12 ]);
output[13 ] = (tran_low_t)WRAPLOW(step2[2 ] - step2[13 ]);
output[14 ] = (tran_low_t)WRAPLOW(step2[1 ] - step2[14 ]);
output[15 ] = (tran_low_t)WRAPLOW(step2[0 ] - step2[15 ]);
}
void vpx_idct16x16_256_add_c(const tran_low_t *input, uint8_t *dest,
int stride) {
int i, j;
tran_low_t out[16 * 16 ];
tran_low_t *outptr = out;
tran_low_t temp_in[16 ], temp_out[16 ];
// First transform rows
for (i = 0 ; i < 16 ; ++i) {
idct16_c(input, outptr);
input += 16 ;
outptr += 16 ;
}
// Then transform columns
for (i = 0 ; i < 16 ; ++i) {
for (j = 0 ; j < 16 ; ++j) temp_in[j] = out[j * 16 + i];
idct16_c(temp_in, temp_out);
for (j = 0 ; j < 16 ; ++j) {
dest[j * stride + i] = clip_pixel_add(dest[j * stride + i],
ROUND_POWER_OF_TWO(temp_out[j], 6 ));
}
}
}
void vpx_idct16x16_38_add_c(const tran_low_t *input, uint8_t *dest,
int stride) {
int i, j;
tran_low_t out[16 * 16 ] = { 0 };
tran_low_t *outptr = out;
tran_low_t temp_in[16 ], temp_out[16 ];
// First transform rows. Since all non-zero dct coefficients are in
// upper-left 8x8 area, we only need to calculate first 8 rows here.
for (i = 0 ; i < 8 ; ++i) {
idct16_c(input, outptr);
input += 16 ;
outptr += 16 ;
}
// Then transform columns
for (i = 0 ; i < 16 ; ++i) {
for (j = 0 ; j < 16 ; ++j) temp_in[j] = out[j * 16 + i];
idct16_c(temp_in, temp_out);
for (j = 0 ; j < 16 ; ++j) {
dest[j * stride + i] = clip_pixel_add(dest[j * stride + i],
ROUND_POWER_OF_TWO(temp_out[j], 6 ));
}
}
}
void vpx_idct16x16_10_add_c(const tran_low_t *input, uint8_t *dest,
int stride) {
int i, j;
tran_low_t out[16 * 16 ] = { 0 };
tran_low_t *outptr = out;
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_c(input, outptr);
input += 16 ;
outptr += 16 ;
}
// Then transform columns
for (i = 0 ; i < 16 ; ++i) {
for (j = 0 ; j < 16 ; ++j) temp_in[j] = out[j * 16 + i];
idct16_c(temp_in, temp_out);
for (j = 0 ; j < 16 ; ++j) {
dest[j * stride + i] = clip_pixel_add(dest[j * stride + i],
ROUND_POWER_OF_TWO(temp_out[j], 6 ));
}
}
}
void vpx_idct16x16_1_add_c(const tran_low_t *input, uint8_t *dest, int stride) {
int i, j;
tran_high_t a1;
tran_low_t out =
WRAPLOW(dct_const_round_shift((int16_t)input[0 ] * cospi_16_64));
out = WRAPLOW(dct_const_round_shift(out * cospi_16_64));
a1 = ROUND_POWER_OF_TWO(out, 6 );
for (j = 0 ; j < 16 ; ++j) {
for (i = 0 ; i < 16 ; ++i) dest[i] = clip_pixel_add(dest[i], a1);
dest += stride;
}
}
void idct32_c(const tran_low_t *input, tran_low_t *output) {
int16_t step1[32 ], step2[32 ];
tran_high_t temp1, temp2;
// stage 1
step1[0 ] = (int16_t)input[0 ];
step1[1 ] = (int16_t)input[16 ];
step1[2 ] = (int16_t)input[8 ];
step1[3 ] = (int16_t)input[24 ];
step1[4 ] = (int16_t)input[4 ];
step1[5 ] = (int16_t)input[20 ];
step1[6 ] = (int16_t)input[12 ];
step1[7 ] = (int16_t)input[28 ];
step1[8 ] = (int16_t)input[2 ];
step1[9 ] = (int16_t)input[18 ];
step1[10 ] = (int16_t)input[10 ];
step1[11 ] = (int16_t)input[26 ];
step1[12 ] = (int16_t)input[6 ];
step1[13 ] = (int16_t)input[22 ];
step1[14 ] = (int16_t)input[14 ];
step1[15 ] = (int16_t)input[30 ];
temp1 = (int16_t)input[1 ] * cospi_31_64 - (int16_t)input[31 ] * cospi_1_64;
temp2 = (int16_t)input[1 ] * cospi_1_64 + (int16_t)input[31 ] * cospi_31_64;
step1[16 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[31 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (int16_t)input[17 ] * cospi_15_64 - (int16_t)input[15 ] * cospi_17_64;
temp2 = (int16_t)input[17 ] * cospi_17_64 + (int16_t)input[15 ] * cospi_15_64;
step1[17 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[30 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (int16_t)input[9 ] * cospi_23_64 - (int16_t)input[23 ] * cospi_9_64;
temp2 = (int16_t)input[9 ] * cospi_9_64 + (int16_t)input[23 ] * cospi_23_64;
step1[18 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[29 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (int16_t)input[25 ] * cospi_7_64 - (int16_t)input[7 ] * cospi_25_64;
temp2 = (int16_t)input[25 ] * cospi_25_64 + (int16_t)input[7 ] * cospi_7_64;
step1[19 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[28 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (int16_t)input[5 ] * cospi_27_64 - (int16_t)input[27 ] * cospi_5_64;
temp2 = (int16_t)input[5 ] * cospi_5_64 + (int16_t)input[27 ] * cospi_27_64;
step1[20 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[27 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (int16_t)input[21 ] * cospi_11_64 - (int16_t)input[11 ] * cospi_21_64;
temp2 = (int16_t)input[21 ] * cospi_21_64 + (int16_t)input[11 ] * cospi_11_64;
step1[21 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[26 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (int16_t)input[13 ] * cospi_19_64 - (int16_t)input[19 ] * cospi_13_64;
temp2 = (int16_t)input[13 ] * cospi_13_64 + (int16_t)input[19 ] * cospi_19_64;
step1[22 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[25 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (int16_t)input[29 ] * cospi_3_64 - (int16_t)input[3 ] * cospi_29_64;
temp2 = (int16_t)input[29 ] * cospi_29_64 + (int16_t)input[3 ] * cospi_3_64;
step1[23 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[24 ] = WRAPLOW(dct_const_round_shift(temp2));
// stage 2
step2[0 ] = step1[0 ];
step2[1 ] = step1[1 ];
step2[2 ] = step1[2 ];
step2[3 ] = step1[3 ];
step2[4 ] = step1[4 ];
step2[5 ] = step1[5 ];
step2[6 ] = step1[6 ];
step2[7 ] = step1[7 ];
temp1 = step1[8 ] * cospi_30_64 - step1[15 ] * cospi_2_64;
temp2 = step1[8 ] * cospi_2_64 + step1[15 ] * cospi_30_64;
step2[8 ] = WRAPLOW(dct_const_round_shift(temp1));
step2[15 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = step1[9 ] * cospi_14_64 - step1[14 ] * cospi_18_64;
temp2 = step1[9 ] * cospi_18_64 + step1[14 ] * cospi_14_64;
step2[9 ] = WRAPLOW(dct_const_round_shift(temp1));
step2[14 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = step1[10 ] * cospi_22_64 - step1[13 ] * cospi_10_64;
temp2 = step1[10 ] * cospi_10_64 + step1[13 ] * cospi_22_64;
step2[10 ] = WRAPLOW(dct_const_round_shift(temp1));
step2[13 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = step1[11 ] * cospi_6_64 - step1[12 ] * cospi_26_64;
temp2 = step1[11 ] * cospi_26_64 + step1[12 ] * cospi_6_64;
step2[11 ] = WRAPLOW(dct_const_round_shift(temp1));
step2[12 ] = WRAPLOW(dct_const_round_shift(temp2));
step2[16 ] = WRAPLOW(step1[16 ] + step1[17 ]);
step2[17 ] = WRAPLOW(step1[16 ] - step1[17 ]);
step2[18 ] = WRAPLOW(-step1[18 ] + step1[19 ]);
step2[19 ] = WRAPLOW(step1[18 ] + step1[19 ]);
step2[20 ] = WRAPLOW(step1[20 ] + step1[21 ]);
step2[21 ] = WRAPLOW(step1[20 ] - step1[21 ]);
step2[22 ] = WRAPLOW(-step1[22 ] + step1[23 ]);
step2[23 ] = WRAPLOW(step1[22 ] + step1[23 ]);
step2[24 ] = WRAPLOW(step1[24 ] + step1[25 ]);
step2[25 ] = WRAPLOW(step1[24 ] - step1[25 ]);
step2[26 ] = WRAPLOW(-step1[26 ] + step1[27 ]);
step2[27 ] = WRAPLOW(step1[26 ] + step1[27 ]);
step2[28 ] = WRAPLOW(step1[28 ] + step1[29 ]);
step2[29 ] = WRAPLOW(step1[28 ] - step1[29 ]);
step2[30 ] = WRAPLOW(-step1[30 ] + step1[31 ]);
step2[31 ] = WRAPLOW(step1[30 ] + step1[31 ]);
// stage 3
step1[0 ] = step2[0 ];
step1[1 ] = step2[1 ];
step1[2 ] = step2[2 ];
step1[3 ] = step2[3 ];
temp1 = step2[4 ] * cospi_28_64 - step2[7 ] * cospi_4_64;
temp2 = step2[4 ] * cospi_4_64 + step2[7 ] * cospi_28_64;
step1[4 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[7 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = step2[5 ] * cospi_12_64 - step2[6 ] * cospi_20_64;
temp2 = step2[5 ] * cospi_20_64 + step2[6 ] * cospi_12_64;
step1[5 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[6 ] = WRAPLOW(dct_const_round_shift(temp2));
step1[8 ] = WRAPLOW(step2[8 ] + step2[9 ]);
step1[9 ] = WRAPLOW(step2[8 ] - step2[9 ]);
step1[10 ] = WRAPLOW(-step2[10 ] + step2[11 ]);
step1[11 ] = WRAPLOW(step2[10 ] + step2[11 ]);
step1[12 ] = WRAPLOW(step2[12 ] + step2[13 ]);
step1[13 ] = WRAPLOW(step2[12 ] - step2[13 ]);
step1[14 ] = WRAPLOW(-step2[14 ] + step2[15 ]);
step1[15 ] = WRAPLOW(step2[14 ] + step2[15 ]);
step1[16 ] = step2[16 ];
step1[31 ] = step2[31 ];
temp1 = -step2[17 ] * cospi_4_64 + step2[30 ] * cospi_28_64;
temp2 = step2[17 ] * cospi_28_64 + step2[30 ] * cospi_4_64;
step1[17 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[30 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = -step2[18 ] * cospi_28_64 - step2[29 ] * cospi_4_64;
temp2 = -step2[18 ] * cospi_4_64 + step2[29 ] * cospi_28_64;
step1[18 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[29 ] = WRAPLOW(dct_const_round_shift(temp2));
step1[19 ] = step2[19 ];
step1[20 ] = step2[20 ];
temp1 = -step2[21 ] * cospi_20_64 + step2[26 ] * cospi_12_64;
temp2 = step2[21 ] * cospi_12_64 + step2[26 ] * cospi_20_64;
step1[21 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[26 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = -step2[22 ] * cospi_12_64 - step2[25 ] * cospi_20_64;
temp2 = -step2[22 ] * cospi_20_64 + step2[25 ] * cospi_12_64;
step1[22 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[25 ] = WRAPLOW(dct_const_round_shift(temp2));
step1[23 ] = step2[23 ];
step1[24 ] = step2[24 ];
step1[27 ] = step2[27 ];
step1[28 ] = step2[28 ];
// stage 4
temp1 = (step1[0 ] + step1[1 ]) * cospi_16_64;
temp2 = (step1[0 ] - step1[1 ]) * cospi_16_64;
step2[0 ] = WRAPLOW(dct_const_round_shift(temp1));
step2[1 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = step1[2 ] * cospi_24_64 - step1[3 ] * cospi_8_64;
temp2 = step1[2 ] * cospi_8_64 + step1[3 ] * cospi_24_64;
step2[2 ] = WRAPLOW(dct_const_round_shift(temp1));
step2[3 ] = WRAPLOW(dct_const_round_shift(temp2));
step2[4 ] = WRAPLOW(step1[4 ] + step1[5 ]);
step2[5 ] = WRAPLOW(step1[4 ] - step1[5 ]);
step2[6 ] = WRAPLOW(-step1[6 ] + step1[7 ]);
step2[7 ] = WRAPLOW(step1[6 ] + step1[7 ]);
step2[8 ] = step1[8 ];
step2[15 ] = step1[15 ];
temp1 = -step1[9 ] * cospi_8_64 + step1[14 ] * cospi_24_64;
temp2 = step1[9 ] * cospi_24_64 + step1[14 ] * cospi_8_64;
step2[9 ] = WRAPLOW(dct_const_round_shift(temp1));
step2[14 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = -step1[10 ] * cospi_24_64 - step1[13 ] * cospi_8_64;
temp2 = -step1[10 ] * cospi_8_64 + step1[13 ] * cospi_24_64;
step2[10 ] = WRAPLOW(dct_const_round_shift(temp1));
step2[13 ] = WRAPLOW(dct_const_round_shift(temp2));
step2[11 ] = step1[11 ];
step2[12 ] = step1[12 ];
step2[16 ] = WRAPLOW(step1[16 ] + step1[19 ]);
step2[17 ] = WRAPLOW(step1[17 ] + step1[18 ]);
step2[18 ] = WRAPLOW(step1[17 ] - step1[18 ]);
step2[19 ] = WRAPLOW(step1[16 ] - step1[19 ]);
step2[20 ] = WRAPLOW(-step1[20 ] + step1[23 ]);
step2[21 ] = WRAPLOW(-step1[21 ] + step1[22 ]);
step2[22 ] = WRAPLOW(step1[21 ] + step1[22 ]);
step2[23 ] = WRAPLOW(step1[20 ] + step1[23 ]);
step2[24 ] = WRAPLOW(step1[24 ] + step1[27 ]);
step2[25 ] = WRAPLOW(step1[25 ] + step1[26 ]);
step2[26 ] = WRAPLOW(step1[25 ] - step1[26 ]);
step2[27 ] = WRAPLOW(step1[24 ] - step1[27 ]);
step2[28 ] = WRAPLOW(-step1[28 ] + step1[31 ]);
step2[29 ] = WRAPLOW(-step1[29 ] + step1[30 ]);
step2[30 ] = WRAPLOW(step1[29 ] + step1[30 ]);
step2[31 ] = WRAPLOW(step1[28 ] + step1[31 ]);
// stage 5
step1[0 ] = WRAPLOW(step2[0 ] + step2[3 ]);
step1[1 ] = WRAPLOW(step2[1 ] + step2[2 ]);
step1[2 ] = WRAPLOW(step2[1 ] - step2[2 ]);
step1[3 ] = WRAPLOW(step2[0 ] - step2[3 ]);
step1[4 ] = step2[4 ];
temp1 = (step2[6 ] - step2[5 ]) * cospi_16_64;
temp2 = (step2[5 ] + step2[6 ]) * cospi_16_64;
step1[5 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[6 ] = WRAPLOW(dct_const_round_shift(temp2));
step1[7 ] = step2[7 ];
step1[8 ] = WRAPLOW(step2[8 ] + step2[11 ]);
step1[9 ] = WRAPLOW(step2[9 ] + step2[10 ]);
step1[10 ] = WRAPLOW(step2[9 ] - step2[10 ]);
step1[11 ] = WRAPLOW(step2[8 ] - step2[11 ]);
step1[12 ] = WRAPLOW(-step2[12 ] + step2[15 ]);
step1[13 ] = WRAPLOW(-step2[13 ] + step2[14 ]);
step1[14 ] = WRAPLOW(step2[13 ] + step2[14 ]);
step1[15 ] = WRAPLOW(step2[12 ] + step2[15 ]);
step1[16 ] = step2[16 ];
step1[17 ] = step2[17 ];
temp1 = -step2[18 ] * cospi_8_64 + step2[29 ] * cospi_24_64;
temp2 = step2[18 ] * cospi_24_64 + step2[29 ] * cospi_8_64;
step1[18 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[29 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = -step2[19 ] * cospi_8_64 + step2[28 ] * cospi_24_64;
temp2 = step2[19 ] * cospi_24_64 + step2[28 ] * cospi_8_64;
step1[19 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[28 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = -step2[20 ] * cospi_24_64 - step2[27 ] * cospi_8_64;
temp2 = -step2[20 ] * cospi_8_64 + step2[27 ] * cospi_24_64;
step1[20 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[27 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = -step2[21 ] * cospi_24_64 - step2[26 ] * cospi_8_64;
temp2 = -step2[21 ] * cospi_8_64 + step2[26 ] * cospi_24_64;
step1[21 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[26 ] = WRAPLOW(dct_const_round_shift(temp2));
step1[22 ] = step2[22 ];
step1[23 ] = step2[23 ];
step1[24 ] = step2[24 ];
step1[25 ] = step2[25 ];
step1[30 ] = step2[30 ];
step1[31 ] = step2[31 ];
// stage 6
step2[0 ] = WRAPLOW(step1[0 ] + step1[7 ]);
step2[1 ] = WRAPLOW(step1[1 ] + step1[6 ]);
step2[2 ] = WRAPLOW(step1[2 ] + step1[5 ]);
step2[3 ] = WRAPLOW(step1[3 ] + step1[4 ]);
step2[4 ] = WRAPLOW(step1[3 ] - step1[4 ]);
step2[5 ] = WRAPLOW(step1[2 ] - step1[5 ]);
step2[6 ] = WRAPLOW(step1[1 ] - step1[6 ]);
step2[7 ] = WRAPLOW(step1[0 ] - step1[7 ]);
step2[8 ] = step1[8 ];
step2[9 ] = step1[9 ];
temp1 = (-step1[10 ] + step1[13 ]) * cospi_16_64;
temp2 = (step1[10 ] + step1[13 ]) * cospi_16_64;
step2[10 ] = WRAPLOW(dct_const_round_shift(temp1));
step2[13 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (-step1[11 ] + step1[12 ]) * cospi_16_64;
temp2 = (step1[11 ] + step1[12 ]) * cospi_16_64;
step2[11 ] = WRAPLOW(dct_const_round_shift(temp1));
step2[12 ] = WRAPLOW(dct_const_round_shift(temp2));
step2[14 ] = step1[14 ];
step2[15 ] = step1[15 ];
step2[16 ] = WRAPLOW(step1[16 ] + step1[23 ]);
step2[17 ] = WRAPLOW(step1[17 ] + step1[22 ]);
step2[18 ] = WRAPLOW(step1[18 ] + step1[21 ]);
step2[19 ] = WRAPLOW(step1[19 ] + step1[20 ]);
step2[20 ] = WRAPLOW(step1[19 ] - step1[20 ]);
step2[21 ] = WRAPLOW(step1[18 ] - step1[21 ]);
step2[22 ] = WRAPLOW(step1[17 ] - step1[22 ]);
step2[23 ] = WRAPLOW(step1[16 ] - step1[23 ]);
step2[24 ] = WRAPLOW(-step1[24 ] + step1[31 ]);
step2[25 ] = WRAPLOW(-step1[25 ] + step1[30 ]);
step2[26 ] = WRAPLOW(-step1[26 ] + step1[29 ]);
step2[27 ] = WRAPLOW(-step1[27 ] + step1[28 ]);
step2[28 ] = WRAPLOW(step1[27 ] + step1[28 ]);
step2[29 ] = WRAPLOW(step1[26 ] + step1[29 ]);
step2[30 ] = WRAPLOW(step1[25 ] + step1[30 ]);
step2[31 ] = WRAPLOW(step1[24 ] + step1[31 ]);
// stage 7
step1[0 ] = WRAPLOW(step2[0 ] + step2[15 ]);
step1[1 ] = WRAPLOW(step2[1 ] + step2[14 ]);
step1[2 ] = WRAPLOW(step2[2 ] + step2[13 ]);
step1[3 ] = WRAPLOW(step2[3 ] + step2[12 ]);
step1[4 ] = WRAPLOW(step2[4 ] + step2[11 ]);
step1[5 ] = WRAPLOW(step2[5 ] + step2[10 ]);
step1[6 ] = WRAPLOW(step2[6 ] + step2[9 ]);
step1[7 ] = WRAPLOW(step2[7 ] + step2[8 ]);
step1[8 ] = WRAPLOW(step2[7 ] - step2[8 ]);
step1[9 ] = WRAPLOW(step2[6 ] - step2[9 ]);
step1[10 ] = WRAPLOW(step2[5 ] - step2[10 ]);
step1[11 ] = WRAPLOW(step2[4 ] - step2[11 ]);
step1[12 ] = WRAPLOW(step2[3 ] - step2[12 ]);
step1[13 ] = WRAPLOW(step2[2 ] - step2[13 ]);
step1[14 ] = WRAPLOW(step2[1 ] - step2[14 ]);
step1[15 ] = WRAPLOW(step2[0 ] - step2[15 ]);
step1[16 ] = step2[16 ];
step1[17 ] = step2[17 ];
step1[18 ] = step2[18 ];
step1[19 ] = step2[19 ];
temp1 = (-step2[20 ] + step2[27 ]) * cospi_16_64;
temp2 = (step2[20 ] + step2[27 ]) * cospi_16_64;
step1[20 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[27 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (-step2[21 ] + step2[26 ]) * cospi_16_64;
temp2 = (step2[21 ] + step2[26 ]) * cospi_16_64;
step1[21 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[26 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (-step2[22 ] + step2[25 ]) * cospi_16_64;
temp2 = (step2[22 ] + step2[25 ]) * cospi_16_64;
step1[22 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[25 ] = WRAPLOW(dct_const_round_shift(temp2));
temp1 = (-step2[23 ] + step2[24 ]) * cospi_16_64;
temp2 = (step2[23 ] + step2[24 ]) * cospi_16_64;
step1[23 ] = WRAPLOW(dct_const_round_shift(temp1));
step1[24 ] = WRAPLOW(dct_const_round_shift(temp2));
step1[28 ] = step2[28 ];
step1[29 ] = step2[29 ];
step1[30 ] = step2[30 ];
step1[31 ] = step2[31 ];
// final stage
output[0 ] = WRAPLOW(step1[0 ] + step1[31 ]);
output[1 ] = WRAPLOW(step1[1 ] + step1[30 ]);
output[2 ] = WRAPLOW(step1[2 ] + step1[29 ]);
output[3 ] = WRAPLOW(step1[3 ] + step1[28 ]);
output[4 ] = WRAPLOW(step1[4 ] + step1[27 ]);
output[5 ] = WRAPLOW(step1[5 ] + step1[26 ]);
output[6 ] = WRAPLOW(step1[6 ] + step1[25 ]);
output[7 ] = WRAPLOW(step1[7 ] + step1[24 ]);
output[8 ] = WRAPLOW(step1[8 ] + step1[23 ]);
output[9 ] = WRAPLOW(step1[9 ] + step1[22 ]);
output[10 ] = WRAPLOW(step1[10 ] + step1[21 ]);
output[11 ] = WRAPLOW(step1[11 ] + step1[20 ]);
output[12 ] = WRAPLOW(step1[12 ] + step1[19 ]);
output[13 ] = WRAPLOW(step1[13 ] + step1[18 ]);
output[14 ] = WRAPLOW(step1[14 ] + step1[17 ]);
output[15 ] = WRAPLOW(step1[15 ] + step1[16 ]);
output[16 ] = WRAPLOW(step1[15 ] - step1[16 ]);
output[17 ] = WRAPLOW(step1[14 ] - step1[17 ]);
output[18 ] = WRAPLOW(step1[13 ] - step1[18 ]);
output[19 ] = WRAPLOW(step1[12 ] - step1[19 ]);
output[20 ] = WRAPLOW(step1[11 ] - step1[20 ]);
output[21 ] = WRAPLOW(step1[10 ] - step1[21 ]);
output[22 ] = WRAPLOW(step1[9 ] - step1[22 ]);
output[23 ] = WRAPLOW(step1[8 ] - step1[23 ]);
output[24 ] = WRAPLOW(step1[7 ] - step1[24 ]);
output[25 ] = WRAPLOW(step1[6 ] - step1[25 ]);
output[26 ] = WRAPLOW(step1[5 ] - step1[26 ]);
output[27 ] = WRAPLOW(step1[4 ] - step1[27 ]);
output[28 ] = WRAPLOW(step1[3 ] - step1[28 ]);
output[29 ] = WRAPLOW(step1[2 ] - step1[29 ]);
output[30 ] = WRAPLOW(step1[1 ] - step1[30 ]);
output[31 ] = WRAPLOW(step1[0 ] - step1[31 ]);
}
void vpx_idct32x32_1024_add_c(const tran_low_t *input, uint8_t *dest,
int stride) {
int i, j;
tran_low_t out[32 * 32 ];
tran_low_t *outptr = out;
tran_low_t temp_in[32 ], temp_out[32 ];
// Rows
for (i = 0 ; i < 32 ; ++i) {
int16_t zero_coeff = 0 ;
for (j = 0 ; j < 32 ; ++j) zero_coeff |= input[j];
if (zero_coeff)
idct32_c(input, outptr);
else
memset(outptr, 0 , sizeof (tran_low_t) * 32 );
input += 32 ;
outptr += 32 ;
}
// Columns
for (i = 0 ; i < 32 ; ++i) {
for (j = 0 ; j < 32 ; ++j) temp_in[j] = out[j * 32 + i];
idct32_c(temp_in, temp_out);
for (j = 0 ; j < 32 ; ++j) {
dest[j * stride + i] = clip_pixel_add(dest[j * stride + i],
ROUND_POWER_OF_TWO(temp_out[j], 6 ));
}
}
}
void vpx_idct32x32_135_add_c(const tran_low_t *input, uint8_t *dest,
int stride) {
int i, j;
tran_low_t out[32 * 32 ] = { 0 };
tran_low_t *outptr = out;
tran_low_t temp_in[32 ], temp_out[32 ];
// Rows
// Only upper-left 16x16 has non-zero coeff
for (i = 0 ; i < 16 ; ++i) {
idct32_c(input, outptr);
input += 32 ;
outptr += 32 ;
}
// Columns
for (i = 0 ; i < 32 ; ++i) {
for (j = 0 ; j < 32 ; ++j) temp_in[j] = out[j * 32 + i];
idct32_c(temp_in, temp_out);
for (j = 0 ; j < 32 ; ++j) {
dest[j * stride + i] = clip_pixel_add(dest[j * stride + i],
ROUND_POWER_OF_TWO(temp_out[j], 6 ));
}
}
}
void vpx_idct32x32_34_add_c(const tran_low_t *input, uint8_t *dest,
int stride) {
int i, j;
tran_low_t out[32 * 32 ] = { 0 };
tran_low_t *outptr = out;
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_c(input, outptr);
input += 32 ;
outptr += 32 ;
}
// Columns
for (i = 0 ; i < 32 ; ++i) {
for (j = 0 ; j < 32 ; ++j) temp_in[j] = out[j * 32 + i];
idct32_c(temp_in, temp_out);
for (j = 0 ; j < 32 ; ++j) {
dest[j * stride + i] = clip_pixel_add(dest[j * stride + i],
ROUND_POWER_OF_TWO(temp_out[j], 6 ));
}
}
}
void vpx_idct32x32_1_add_c(const tran_low_t *input, uint8_t *dest, int stride) {
int i, j;
tran_high_t a1;
tran_low_t out =
WRAPLOW(dct_const_round_shift((int16_t)input[0 ] * cospi_16_64));
out = WRAPLOW(dct_const_round_shift(out * cospi_16_64));
a1 = ROUND_POWER_OF_TWO(out, 6 );
for (j = 0 ; j < 32 ; ++j) {
for (i = 0 ; i < 32 ; ++i) dest[i] = clip_pixel_add(dest[i], a1);
dest += stride;
}
}
#if CONFIG_VP9_HIGHBITDEPTH
// 12 signal input bits + 7 2D forward transform amplify bits + 5 1D inverse
// transform amplify bits + 1 bit for contingency in rounding and quantizing
#define HIGHBD_VALID_TXFM_MAGNITUDE_RANGE (1 << 25 )
static INLINE int detect_invalid_highbd_input(const tran_low_t *input,
int size) {
int i;
for (i = 0 ; i < size; ++i)
if (abs(input[i]) >= HIGHBD_VALID_TXFM_MAGNITUDE_RANGE) return 1 ;
return 0 ;
}
void vpx_highbd_iwht4x4_16_add_c(const tran_low_t *input, uint16_t *dest,
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;
for (i = 0 ; i < 4 ; i++) {
a1 = ip[0 ] >> UNIT_QUANT_SHIFT;
c1 = ip[1 ] >> UNIT_QUANT_SHIFT;
d1 = ip[2 ] >> UNIT_QUANT_SHIFT;
b1 = ip[3 ] >> UNIT_QUANT_SHIFT;
a1 += c1;
d1 -= b1;
e1 = (a1 - d1) >> 1 ;
b1 = e1 - b1;
c1 = e1 - c1;
a1 -= b1;
d1 += c1;
op[0 ] = HIGHBD_WRAPLOW(a1, bd);
op[1 ] = HIGHBD_WRAPLOW(b1, bd);
op[2 ] = HIGHBD_WRAPLOW(c1, bd);
op[3 ] = HIGHBD_WRAPLOW(d1, bd);
ip += 4 ;
op += 4 ;
}
ip = output;
for (i = 0 ; i < 4 ; i++) {
a1 = ip[4 * 0 ];
c1 = ip[4 * 1 ];
d1 = ip[4 * 2 ];
b1 = ip[4 * 3 ];
a1 += c1;
d1 -= b1;
e1 = (a1 - d1) >> 1 ;
b1 = e1 - b1;
c1 = e1 - c1;
a1 -= b1;
d1 += c1;
dest[stride * 0 ] =
highbd_clip_pixel_add(dest[stride * 0 ], HIGHBD_WRAPLOW(a1, bd), bd);
dest[stride * 1 ] =
highbd_clip_pixel_add(dest[stride * 1 ], HIGHBD_WRAPLOW(b1, bd), bd);
dest[stride * 2 ] =
highbd_clip_pixel_add(dest[stride * 2 ], HIGHBD_WRAPLOW(c1, bd), bd);
dest[stride * 3 ] =
highbd_clip_pixel_add(dest[stride * 3 ], HIGHBD_WRAPLOW(d1, bd), bd);
ip++;
dest++;
}
}
void vpx_highbd_iwht4x4_1_add_c(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int i;
tran_high_t a1, e1;
tran_low_t tmp[4 ];
const tran_low_t *ip = input;
tran_low_t *op = tmp;
(void )bd;
a1 = ip[0 ] >> UNIT_QUANT_SHIFT;
e1 = a1 >> 1 ;
a1 -= e1;
op[0 ] = HIGHBD_WRAPLOW(a1, bd);
op[1 ] = op[2 ] = op[3 ] = HIGHBD_WRAPLOW(e1, bd);
ip = tmp;
for (i = 0 ; i < 4 ; i++) {
e1 = ip[0 ] >> 1 ;
a1 = ip[0 ] - e1;
dest[stride * 0 ] = highbd_clip_pixel_add(dest[stride * 0 ], a1, bd);
dest[stride * 1 ] = highbd_clip_pixel_add(dest[stride * 1 ], e1, bd);
dest[stride * 2 ] = highbd_clip_pixel_add(dest[stride * 2 ], e1, bd);
dest[stride * 3 ] = highbd_clip_pixel_add(dest[stride * 3 ], e1, bd);
ip++;
dest++;
}
}
void vpx_highbd_iadst4_c(const tran_low_t *input, tran_low_t *output, int bd) {
tran_high_t s0, s1, s2, s3, s4, s5, s6, s7;
tran_low_t x0 = input[0 ];
tran_low_t x1 = input[1 ];
tran_low_t x2 = input[2 ];
tran_low_t x3 = input[3 ];
(void )bd;
if (detect_invalid_highbd_input(input, 4 )) {
#if CONFIG_COEFFICIENT_RANGE_CHECKING
assert(0 && "invalid highbd txfm input" );
#endif // CONFIG_COEFFICIENT_RANGE_CHECKING
memset(output, 0 , sizeof (*output) * 4 );
return ;
}
if (!(x0 | x1 | x2 | x3)) {
memset(output, 0 , 4 * sizeof (*output));
return ;
}
s0 = (tran_high_t)sinpi_1_9 * x0;
s1 = (tran_high_t)sinpi_2_9 * x0;
s2 = (tran_high_t)sinpi_3_9 * x1;
s3 = (tran_high_t)sinpi_4_9 * x2;
s4 = (tran_high_t)sinpi_1_9 * x2;
s5 = (tran_high_t)sinpi_2_9 * x3;
s6 = (tran_high_t)sinpi_4_9 * x3;
s7 = (tran_high_t)HIGHBD_WRAPLOW(x0 - x2 + x3, bd);
s0 = s0 + s3 + s5;
s1 = s1 - s4 - s6;
s3 = s2;
s2 = sinpi_3_9 * s7;
// 1-D transform scaling factor is sqrt(2).
// The overall dynamic range is 14b (input) + 14b (multiplication scaling)
// + 1b (addition) = 29b.
// Hence the output bit depth is 15b.
output[0 ] = HIGHBD_WRAPLOW(dct_const_round_shift(s0 + s3), bd);
output[1 ] = HIGHBD_WRAPLOW(dct_const_round_shift(s1 + s3), bd);
output[2 ] = HIGHBD_WRAPLOW(dct_const_round_shift(s2), bd);
output[3 ] = HIGHBD_WRAPLOW(dct_const_round_shift(s0 + s1 - s3), bd);
}
void vpx_highbd_idct4_c(const tran_low_t *input, tran_low_t *output, int bd) {
tran_low_t step[4 ];
tran_high_t temp1, temp2;
(void )bd;
if (detect_invalid_highbd_input(input, 4 )) {
#if CONFIG_COEFFICIENT_RANGE_CHECKING
assert(0 && "invalid highbd txfm input" );
#endif // CONFIG_COEFFICIENT_RANGE_CHECKING
memset(output, 0 , sizeof (*output) * 4 );
return ;
}
// stage 1
temp1 = (input[0 ] + input[2 ]) * (tran_high_t)cospi_16_64;
temp2 = (input[0 ] - input[2 ]) * (tran_high_t)cospi_16_64;
step[0 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step[1 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 =
input[1 ] * (tran_high_t)cospi_24_64 - input[3 ] * (tran_high_t)cospi_8_64;
temp2 =
input[1 ] * (tran_high_t)cospi_8_64 + input[3 ] * (tran_high_t)cospi_24_64;
step[2 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step[3 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
// stage 2
output[0 ] = HIGHBD_WRAPLOW(step[0 ] + step[3 ], bd);
output[1 ] = HIGHBD_WRAPLOW(step[1 ] + step[2 ], bd);
output[2 ] = HIGHBD_WRAPLOW(step[1 ] - step[2 ], bd);
output[3 ] = HIGHBD_WRAPLOW(step[0 ] - step[3 ], bd);
}
void vpx_highbd_idct4x4_16_add_c(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int i, j;
tran_low_t out[4 * 4 ];
tran_low_t *outptr = out;
tran_low_t temp_in[4 ], temp_out[4 ];
// Rows
for (i = 0 ; i < 4 ; ++i) {
vpx_highbd_idct4_c(input, outptr, bd);
input += 4 ;
outptr += 4 ;
}
// Columns
for (i = 0 ; i < 4 ; ++i) {
for (j = 0 ; j < 4 ; ++j) temp_in[j] = out[j * 4 + i];
vpx_highbd_idct4_c(temp_in, temp_out, bd);
for (j = 0 ; j < 4 ; ++j) {
dest[j * stride + i] = highbd_clip_pixel_add(
dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 4 ), bd);
}
}
}
void vpx_highbd_idct4x4_1_add_c(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int i;
tran_high_t a1;
tran_low_t out = HIGHBD_WRAPLOW(
dct_const_round_shift(input[0 ] * (tran_high_t)cospi_16_64), bd);
out =
HIGHBD_WRAPLOW(dct_const_round_shift(out * (tran_high_t)cospi_16_64), bd);
a1 = ROUND_POWER_OF_TWO(out, 4 );
for (i = 0 ; i < 4 ; i++) {
dest[0 ] = highbd_clip_pixel_add(dest[0 ], a1, bd);
dest[1 ] = highbd_clip_pixel_add(dest[1 ], a1, bd);
dest[2 ] = highbd_clip_pixel_add(dest[2 ], a1, bd);
dest[3 ] = highbd_clip_pixel_add(dest[3 ], a1, bd);
dest += stride;
}
}
void vpx_highbd_iadst8_c(const tran_low_t *input, tran_low_t *output, int bd) {
tran_high_t s0, s1, s2, s3, s4, s5, s6, s7;
tran_low_t x0 = input[7 ];
tran_low_t x1 = input[0 ];
tran_low_t x2 = input[5 ];
tran_low_t x3 = input[2 ];
tran_low_t x4 = input[3 ];
tran_low_t x5 = input[4 ];
tran_low_t x6 = input[1 ];
tran_low_t x7 = input[6 ];
(void )bd;
if (detect_invalid_highbd_input(input, 8 )) {
#if CONFIG_COEFFICIENT_RANGE_CHECKING
assert(0 && "invalid highbd txfm input" );
#endif // CONFIG_COEFFICIENT_RANGE_CHECKING
memset(output, 0 , sizeof (*output) * 8 );
return ;
}
if (!(x0 | x1 | x2 | x3 | x4 | x5 | x6 | x7)) {
memset(output, 0 , 8 * sizeof (*output));
return ;
}
// stage 1
s0 = (tran_high_t)cospi_2_64 * x0 + (tran_high_t)cospi_30_64 * x1;
s1 = (tran_high_t)cospi_30_64 * x0 - (tran_high_t)cospi_2_64 * x1;
s2 = (tran_high_t)cospi_10_64 * x2 + (tran_high_t)cospi_22_64 * x3;
s3 = (tran_high_t)cospi_22_64 * x2 - (tran_high_t)cospi_10_64 * x3;
s4 = (tran_high_t)cospi_18_64 * x4 + (tran_high_t)cospi_14_64 * x5;
s5 = (tran_high_t)cospi_14_64 * x4 - (tran_high_t)cospi_18_64 * x5;
s6 = (tran_high_t)cospi_26_64 * x6 + (tran_high_t)cospi_6_64 * x7;
s7 = (tran_high_t)cospi_6_64 * x6 - (tran_high_t)cospi_26_64 * x7;
x0 = HIGHBD_WRAPLOW(dct_const_round_shift(s0 + s4), bd);
x1 = HIGHBD_WRAPLOW(dct_const_round_shift(s1 + s5), bd);
x2 = HIGHBD_WRAPLOW(dct_const_round_shift(s2 + s6), bd);
x3 = HIGHBD_WRAPLOW(dct_const_round_shift(s3 + s7), bd);
x4 = HIGHBD_WRAPLOW(dct_const_round_shift(s0 - s4), bd);
x5 = HIGHBD_WRAPLOW(dct_const_round_shift(s1 - s5), bd);
x6 = HIGHBD_WRAPLOW(dct_const_round_shift(s2 - s6), bd);
x7 = HIGHBD_WRAPLOW(dct_const_round_shift(s3 - s7), bd);
// stage 2
s0 = x0;
s1 = x1;
s2 = x2;
s3 = x3;
s4 = (tran_high_t)cospi_8_64 * x4 + (tran_high_t)cospi_24_64 * x5;
s5 = (tran_high_t)cospi_24_64 * x4 - (tran_high_t)cospi_8_64 * x5;
s6 = (tran_high_t)(-cospi_24_64) * x6 + (tran_high_t)cospi_8_64 * x7;
s7 = (tran_high_t)cospi_8_64 * x6 + (tran_high_t)cospi_24_64 * x7;
x0 = HIGHBD_WRAPLOW(s0 + s2, bd);
x1 = HIGHBD_WRAPLOW(s1 + s3, bd);
x2 = HIGHBD_WRAPLOW(s0 - s2, bd);
x3 = HIGHBD_WRAPLOW(s1 - s3, bd);
x4 = HIGHBD_WRAPLOW(dct_const_round_shift(s4 + s6), bd);
x5 = HIGHBD_WRAPLOW(dct_const_round_shift(s5 + s7), bd);
x6 = HIGHBD_WRAPLOW(dct_const_round_shift(s4 - s6), bd);
x7 = HIGHBD_WRAPLOW(dct_const_round_shift(s5 - s7), bd);
// stage 3
s2 = (tran_high_t)cospi_16_64 * (x2 + x3);
s3 = (tran_high_t)cospi_16_64 * (x2 - x3);
s6 = (tran_high_t)cospi_16_64 * (x6 + x7);
s7 = (tran_high_t)cospi_16_64 * (x6 - x7);
x2 = HIGHBD_WRAPLOW(dct_const_round_shift(s2), bd);
x3 = HIGHBD_WRAPLOW(dct_const_round_shift(s3), bd);
x6 = HIGHBD_WRAPLOW(dct_const_round_shift(s6), bd);
x7 = HIGHBD_WRAPLOW(dct_const_round_shift(s7), bd);
output[0 ] = HIGHBD_WRAPLOW(x0, bd);
output[1 ] = HIGHBD_WRAPLOW(-x4, bd);
output[2 ] = HIGHBD_WRAPLOW(x6, bd);
output[3 ] = HIGHBD_WRAPLOW(-x2, bd);
output[4 ] = HIGHBD_WRAPLOW(x3, bd);
output[5 ] = HIGHBD_WRAPLOW(-x7, bd);
output[6 ] = HIGHBD_WRAPLOW(x5, bd);
output[7 ] = HIGHBD_WRAPLOW(-x1, bd);
}
void vpx_highbd_idct8_c(const tran_low_t *input, tran_low_t *output, int bd) {
tran_low_t step1[8 ], step2[8 ];
tran_high_t temp1, temp2;
if (detect_invalid_highbd_input(input, 8 )) {
#if CONFIG_COEFFICIENT_RANGE_CHECKING
assert(0 && "invalid highbd txfm input" );
#endif // CONFIG_COEFFICIENT_RANGE_CHECKING
memset(output, 0 , sizeof (*output) * 8 );
return ;
}
// stage 1
step1[0 ] = input[0 ];
step1[2 ] = input[4 ];
step1[1 ] = input[2 ];
step1[3 ] = input[6 ];
temp1 =
input[1 ] * (tran_high_t)cospi_28_64 - input[7 ] * (tran_high_t)cospi_4_64;
temp2 =
input[1 ] * (tran_high_t)cospi_4_64 + input[7 ] * (tran_high_t)cospi_28_64;
step1[4 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[7 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 =
input[5 ] * (tran_high_t)cospi_12_64 - input[3 ] * (tran_high_t)cospi_20_64;
temp2 =
input[5 ] * (tran_high_t)cospi_20_64 + input[3 ] * (tran_high_t)cospi_12_64;
step1[5 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[6 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
// stage 2 & stage 3 - even half
vpx_highbd_idct4_c(step1, step1, bd);
// stage 2 - odd half
step2[4 ] = HIGHBD_WRAPLOW(step1[4 ] + step1[5 ], bd);
step2[5 ] = HIGHBD_WRAPLOW(step1[4 ] - step1[5 ], bd);
step2[6 ] = HIGHBD_WRAPLOW(-step1[6 ] + step1[7 ], bd);
step2[7 ] = HIGHBD_WRAPLOW(step1[6 ] + step1[7 ], bd);
// stage 3 - odd half
step1[4 ] = step2[4 ];
temp1 = (step2[6 ] - step2[5 ]) * (tran_high_t)cospi_16_64;
temp2 = (step2[5 ] + step2[6 ]) * (tran_high_t)cospi_16_64;
step1[5 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[6 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step1[7 ] = step2[7 ];
// stage 4
output[0 ] = HIGHBD_WRAPLOW(step1[0 ] + step1[7 ], bd);
output[1 ] = HIGHBD_WRAPLOW(step1[1 ] + step1[6 ], bd);
output[2 ] = HIGHBD_WRAPLOW(step1[2 ] + step1[5 ], bd);
output[3 ] = HIGHBD_WRAPLOW(step1[3 ] + step1[4 ], bd);
output[4 ] = HIGHBD_WRAPLOW(step1[3 ] - step1[4 ], bd);
output[5 ] = HIGHBD_WRAPLOW(step1[2 ] - step1[5 ], bd);
output[6 ] = HIGHBD_WRAPLOW(step1[1 ] - step1[6 ], bd);
output[7 ] = HIGHBD_WRAPLOW(step1[0 ] - step1[7 ], bd);
}
void vpx_highbd_idct8x8_64_add_c(const tran_low_t *input, uint16_t *dest,
int stride, 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 ];
// First transform rows
for (i = 0 ; i < 8 ; ++i) {
vpx_highbd_idct8_c(input, outptr, bd);
input += 8 ;
outptr += 8 ;
}
// Then transform columns
for (i = 0 ; i < 8 ; ++i) {
for (j = 0 ; j < 8 ; ++j) temp_in[j] = out[j * 8 + i];
vpx_highbd_idct8_c(temp_in, temp_out, bd);
for (j = 0 ; j < 8 ; ++j) {
dest[j * stride + i] = highbd_clip_pixel_add(
dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 5 ), bd);
}
}
}
void vpx_highbd_idct8x8_12_add_c(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int i, j;
tran_low_t out[8 * 8 ] = { 0 };
tran_low_t *outptr = out;
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) {
vpx_highbd_idct8_c(input, outptr, bd);
input += 8 ;
outptr += 8 ;
}
// Then transform columns
for (i = 0 ; i < 8 ; ++i) {
for (j = 0 ; j < 8 ; ++j) temp_in[j] = out[j * 8 + i];
vpx_highbd_idct8_c(temp_in, temp_out, bd);
for (j = 0 ; j < 8 ; ++j) {
dest[j * stride + i] = highbd_clip_pixel_add(
dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 5 ), bd);
}
}
}
void vpx_highbd_idct8x8_1_add_c(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int i, j;
tran_high_t a1;
tran_low_t out = HIGHBD_WRAPLOW(
dct_const_round_shift(input[0 ] * (tran_high_t)cospi_16_64), bd);
out =
HIGHBD_WRAPLOW(dct_const_round_shift(out * (tran_high_t)cospi_16_64), bd);
a1 = ROUND_POWER_OF_TWO(out, 5 );
for (j = 0 ; j < 8 ; ++j) {
for (i = 0 ; i < 8 ; ++i) dest[i] = highbd_clip_pixel_add(dest[i], a1, bd);
dest += stride;
}
}
void vpx_highbd_iadst16_c(const tran_low_t *input, tran_low_t *output, int bd) {
tran_high_t s0, s1, s2, s3, s4, s5, s6, s7, s8;
tran_high_t s9, s10, s11, s12, s13, s14, s15;
tran_low_t x0 = input[15 ];
tran_low_t x1 = input[0 ];
tran_low_t x2 = input[13 ];
tran_low_t x3 = input[2 ];
tran_low_t x4 = input[11 ];
tran_low_t x5 = input[4 ];
tran_low_t x6 = input[9 ];
tran_low_t x7 = input[6 ];
tran_low_t x8 = input[7 ];
tran_low_t x9 = input[8 ];
tran_low_t x10 = input[5 ];
tran_low_t x11 = input[10 ];
tran_low_t x12 = input[3 ];
tran_low_t x13 = input[12 ];
tran_low_t x14 = input[1 ];
tran_low_t x15 = input[14 ];
(void )bd;
if (detect_invalid_highbd_input(input, 16 )) {
#if CONFIG_COEFFICIENT_RANGE_CHECKING
assert(0 && "invalid highbd txfm input" );
#endif // CONFIG_COEFFICIENT_RANGE_CHECKING
memset(output, 0 , sizeof (*output) * 16 );
return ;
}
if (!(x0 | x1 | x2 | x3 | x4 | x5 | x6 | x7 | x8 | x9 | x10 | x11 | x12 |
x13 | x14 | x15)) {
memset(output, 0 , 16 * sizeof (*output));
return ;
}
// stage 1
s0 = x0 * (tran_high_t)cospi_1_64 + x1 * (tran_high_t)cospi_31_64;
s1 = x0 * (tran_high_t)cospi_31_64 - x1 * (tran_high_t)cospi_1_64;
s2 = x2 * (tran_high_t)cospi_5_64 + x3 * (tran_high_t)cospi_27_64;
s3 = x2 * (tran_high_t)cospi_27_64 - x3 * (tran_high_t)cospi_5_64;
s4 = x4 * (tran_high_t)cospi_9_64 + x5 * (tran_high_t)cospi_23_64;
s5 = x4 * (tran_high_t)cospi_23_64 - x5 * (tran_high_t)cospi_9_64;
s6 = x6 * (tran_high_t)cospi_13_64 + x7 * (tran_high_t)cospi_19_64;
s7 = x6 * (tran_high_t)cospi_19_64 - x7 * (tran_high_t)cospi_13_64;
s8 = x8 * (tran_high_t)cospi_17_64 + x9 * (tran_high_t)cospi_15_64;
s9 = x8 * (tran_high_t)cospi_15_64 - x9 * (tran_high_t)cospi_17_64;
s10 = x10 * (tran_high_t)cospi_21_64 + x11 * (tran_high_t)cospi_11_64;
s11 = x10 * (tran_high_t)cospi_11_64 - x11 * (tran_high_t)cospi_21_64;
s12 = x12 * (tran_high_t)cospi_25_64 + x13 * (tran_high_t)cospi_7_64;
s13 = x12 * (tran_high_t)cospi_7_64 - x13 * (tran_high_t)cospi_25_64;
s14 = x14 * (tran_high_t)cospi_29_64 + x15 * (tran_high_t)cospi_3_64;
s15 = x14 * (tran_high_t)cospi_3_64 - x15 * (tran_high_t)cospi_29_64;
x0 = HIGHBD_WRAPLOW(dct_const_round_shift(s0 + s8), bd);
x1 = HIGHBD_WRAPLOW(dct_const_round_shift(s1 + s9), bd);
x2 = HIGHBD_WRAPLOW(dct_const_round_shift(s2 + s10), bd);
x3 = HIGHBD_WRAPLOW(dct_const_round_shift(s3 + s11), bd);
x4 = HIGHBD_WRAPLOW(dct_const_round_shift(s4 + s12), bd);
x5 = HIGHBD_WRAPLOW(dct_const_round_shift(s5 + s13), bd);
x6 = HIGHBD_WRAPLOW(dct_const_round_shift(s6 + s14), bd);
x7 = HIGHBD_WRAPLOW(dct_const_round_shift(s7 + s15), bd);
x8 = HIGHBD_WRAPLOW(dct_const_round_shift(s0 - s8), bd);
x9 = HIGHBD_WRAPLOW(dct_const_round_shift(s1 - s9), bd);
x10 = HIGHBD_WRAPLOW(dct_const_round_shift(s2 - s10), bd);
x11 = HIGHBD_WRAPLOW(dct_const_round_shift(s3 - s11), bd);
x12 = HIGHBD_WRAPLOW(dct_const_round_shift(s4 - s12), bd);
x13 = HIGHBD_WRAPLOW(dct_const_round_shift(s5 - s13), bd);
x14 = HIGHBD_WRAPLOW(dct_const_round_shift(s6 - s14), bd);
x15 = HIGHBD_WRAPLOW(dct_const_round_shift(s7 - s15), bd);
// stage 2
s0 = x0;
s1 = x1;
s2 = x2;
s3 = x3;
s4 = x4;
s5 = x5;
s6 = x6;
s7 = x7;
s8 = x8 * (tran_high_t)cospi_4_64 + x9 * (tran_high_t)cospi_28_64;
s9 = x8 * (tran_high_t)cospi_28_64 - x9 * (tran_high_t)cospi_4_64;
s10 = x10 * (tran_high_t)cospi_20_64 + x11 * (tran_high_t)cospi_12_64;
s11 = x10 * (tran_high_t)cospi_12_64 - x11 * (tran_high_t)cospi_20_64;
s12 = -x12 * (tran_high_t)cospi_28_64 + x13 * (tran_high_t)cospi_4_64;
s13 = x12 * (tran_high_t)cospi_4_64 + x13 * (tran_high_t)cospi_28_64;
s14 = -x14 * (tran_high_t)cospi_12_64 + x15 * (tran_high_t)cospi_20_64;
s15 = x14 * (tran_high_t)cospi_20_64 + x15 * (tran_high_t)cospi_12_64;
x0 = HIGHBD_WRAPLOW(s0 + s4, bd);
x1 = HIGHBD_WRAPLOW(s1 + s5, bd);
x2 = HIGHBD_WRAPLOW(s2 + s6, bd);
x3 = HIGHBD_WRAPLOW(s3 + s7, bd);
x4 = HIGHBD_WRAPLOW(s0 - s4, bd);
x5 = HIGHBD_WRAPLOW(s1 - s5, bd);
x6 = HIGHBD_WRAPLOW(s2 - s6, bd);
x7 = HIGHBD_WRAPLOW(s3 - s7, bd);
x8 = HIGHBD_WRAPLOW(dct_const_round_shift(s8 + s12), bd);
x9 = HIGHBD_WRAPLOW(dct_const_round_shift(s9 + s13), bd);
x10 = HIGHBD_WRAPLOW(dct_const_round_shift(s10 + s14), bd);
x11 = HIGHBD_WRAPLOW(dct_const_round_shift(s11 + s15), bd);
x12 = HIGHBD_WRAPLOW(dct_const_round_shift(s8 - s12), bd);
x13 = HIGHBD_WRAPLOW(dct_const_round_shift(s9 - s13), bd);
x14 = HIGHBD_WRAPLOW(dct_const_round_shift(s10 - s14), bd);
x15 = HIGHBD_WRAPLOW(dct_const_round_shift(s11 - s15), bd);
// stage 3
s0 = x0;
s1 = x1;
s2 = x2;
s3 = x3;
s4 = x4 * (tran_high_t)cospi_8_64 + x5 * (tran_high_t)cospi_24_64;
s5 = x4 * (tran_high_t)cospi_24_64 - x5 * (tran_high_t)cospi_8_64;
s6 = -x6 * (tran_high_t)cospi_24_64 + x7 * (tran_high_t)cospi_8_64;
s7 = x6 * (tran_high_t)cospi_8_64 + x7 * (tran_high_t)cospi_24_64;
s8 = x8;
s9 = x9;
s10 = x10;
s11 = x11;
s12 = x12 * (tran_high_t)cospi_8_64 + x13 * (tran_high_t)cospi_24_64;
s13 = x12 * (tran_high_t)cospi_24_64 - x13 * (tran_high_t)cospi_8_64;
s14 = -x14 * (tran_high_t)cospi_24_64 + x15 * (tran_high_t)cospi_8_64;
s15 = x14 * (tran_high_t)cospi_8_64 + x15 * (tran_high_t)cospi_24_64;
x0 = HIGHBD_WRAPLOW(s0 + s2, bd);
x1 = HIGHBD_WRAPLOW(s1 + s3, bd);
x2 = HIGHBD_WRAPLOW(s0 - s2, bd);
x3 = HIGHBD_WRAPLOW(s1 - s3, bd);
x4 = HIGHBD_WRAPLOW(dct_const_round_shift(s4 + s6), bd);
x5 = HIGHBD_WRAPLOW(dct_const_round_shift(s5 + s7), bd);
x6 = HIGHBD_WRAPLOW(dct_const_round_shift(s4 - s6), bd);
x7 = HIGHBD_WRAPLOW(dct_const_round_shift(s5 - s7), bd);
x8 = HIGHBD_WRAPLOW(s8 + s10, bd);
x9 = HIGHBD_WRAPLOW(s9 + s11, bd);
x10 = HIGHBD_WRAPLOW(s8 - s10, bd);
x11 = HIGHBD_WRAPLOW(s9 - s11, bd);
x12 = HIGHBD_WRAPLOW(dct_const_round_shift(s12 + s14), bd);
x13 = HIGHBD_WRAPLOW(dct_const_round_shift(s13 + s15), bd);
x14 = HIGHBD_WRAPLOW(dct_const_round_shift(s12 - s14), bd);
x15 = HIGHBD_WRAPLOW(dct_const_round_shift(s13 - s15), bd);
// stage 4
s2 = (tran_high_t)(-cospi_16_64) * (x2 + x3);
s3 = (tran_high_t)cospi_16_64 * (x2 - x3);
s6 = (tran_high_t)cospi_16_64 * (x6 + x7);
s7 = (tran_high_t)cospi_16_64 * (-x6 + x7);
s10 = (tran_high_t)cospi_16_64 * (x10 + x11);
s11 = (tran_high_t)cospi_16_64 * (-x10 + x11);
s14 = (tran_high_t)(-cospi_16_64) * (x14 + x15);
s15 = (tran_high_t)cospi_16_64 * (x14 - x15);
x2 = HIGHBD_WRAPLOW(dct_const_round_shift(s2), bd);
x3 = HIGHBD_WRAPLOW(dct_const_round_shift(s3), bd);
x6 = HIGHBD_WRAPLOW(dct_const_round_shift(s6), bd);
x7 = HIGHBD_WRAPLOW(dct_const_round_shift(s7), bd);
x10 = HIGHBD_WRAPLOW(dct_const_round_shift(s10), bd);
x11 = HIGHBD_WRAPLOW(dct_const_round_shift(s11), bd);
x14 = HIGHBD_WRAPLOW(dct_const_round_shift(s14), bd);
x15 = HIGHBD_WRAPLOW(dct_const_round_shift(s15), bd);
output[0 ] = HIGHBD_WRAPLOW(x0, bd);
output[1 ] = HIGHBD_WRAPLOW(-x8, bd);
output[2 ] = HIGHBD_WRAPLOW(x12, bd);
output[3 ] = HIGHBD_WRAPLOW(-x4, bd);
output[4 ] = HIGHBD_WRAPLOW(x6, bd);
output[5 ] = HIGHBD_WRAPLOW(x14, bd);
output[6 ] = HIGHBD_WRAPLOW(x10, bd);
output[7 ] = HIGHBD_WRAPLOW(x2, bd);
output[8 ] = HIGHBD_WRAPLOW(x3, bd);
output[9 ] = HIGHBD_WRAPLOW(x11, bd);
output[10 ] = HIGHBD_WRAPLOW(x15, bd);
output[11 ] = HIGHBD_WRAPLOW(x7, bd);
output[12 ] = HIGHBD_WRAPLOW(x5, bd);
output[13 ] = HIGHBD_WRAPLOW(-x13, bd);
output[14 ] = HIGHBD_WRAPLOW(x9, bd);
output[15 ] = HIGHBD_WRAPLOW(-x1, bd);
}
void vpx_highbd_idct16_c(const tran_low_t *input, tran_low_t *output, int bd) {
tran_low_t step1[16 ], step2[16 ];
tran_high_t temp1, temp2;
(void )bd;
if (detect_invalid_highbd_input(input, 16 )) {
#if CONFIG_COEFFICIENT_RANGE_CHECKING
assert(0 && "invalid highbd txfm input" );
#endif // CONFIG_COEFFICIENT_RANGE_CHECKING
memset(output, 0 , sizeof (*output) * 16 );
return ;
}
// 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 ] * (tran_high_t)cospi_30_64 - step1[15 ] * (tran_high_t)cospi_2_64;
temp2 =
step1[8 ] * (tran_high_t)cospi_2_64 + step1[15 ] * (tran_high_t)cospi_30_64;
step2[8 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[15 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = step1[9 ] * (tran_high_t)cospi_14_64 -
step1[14 ] * (tran_high_t)cospi_18_64;
temp2 = step1[9 ] * (tran_high_t)cospi_18_64 +
step1[14 ] * (tran_high_t)cospi_14_64;
step2[9 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[14 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = step1[10 ] * (tran_high_t)cospi_22_64 -
step1[13 ] * (tran_high_t)cospi_10_64;
temp2 = step1[10 ] * (tran_high_t)cospi_10_64 +
step1[13 ] * (tran_high_t)cospi_22_64;
step2[10 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[13 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = step1[11 ] * (tran_high_t)cospi_6_64 -
step1[12 ] * (tran_high_t)cospi_26_64;
temp2 = step1[11 ] * (tran_high_t)cospi_26_64 +
step1[12 ] * (tran_high_t)cospi_6_64;
step2[11 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[12 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
// stage 3
step1[0 ] = step2[0 ];
step1[1 ] = step2[1 ];
step1[2 ] = step2[2 ];
step1[3 ] = step2[3 ];
temp1 =
step2[4 ] * (tran_high_t)cospi_28_64 - step2[7 ] * (tran_high_t)cospi_4_64;
temp2 =
step2[4 ] * (tran_high_t)cospi_4_64 + step2[7 ] * (tran_high_t)cospi_28_64;
step1[4 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[7 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 =
step2[5 ] * (tran_high_t)cospi_12_64 - step2[6 ] * (tran_high_t)cospi_20_64;
temp2 =
step2[5 ] * (tran_high_t)cospi_20_64 + step2[6 ] * (tran_high_t)cospi_12_64;
step1[5 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[6 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step1[8 ] = HIGHBD_WRAPLOW(step2[8 ] + step2[9 ], bd);
step1[9 ] = HIGHBD_WRAPLOW(step2[8 ] - step2[9 ], bd);
step1[10 ] = HIGHBD_WRAPLOW(-step2[10 ] + step2[11 ], bd);
step1[11 ] = HIGHBD_WRAPLOW(step2[10 ] + step2[11 ], bd);
step1[12 ] = HIGHBD_WRAPLOW(step2[12 ] + step2[13 ], bd);
step1[13 ] = HIGHBD_WRAPLOW(step2[12 ] - step2[13 ], bd);
step1[14 ] = HIGHBD_WRAPLOW(-step2[14 ] + step2[15 ], bd);
step1[15 ] = HIGHBD_WRAPLOW(step2[14 ] + step2[15 ], bd);
// stage 4
temp1 = (step1[0 ] + step1[1 ]) * (tran_high_t)cospi_16_64;
temp2 = (step1[0 ] - step1[1 ]) * (tran_high_t)cospi_16_64;
step2[0 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[1 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 =
step1[2 ] * (tran_high_t)cospi_24_64 - step1[3 ] * (tran_high_t)cospi_8_64;
temp2 =
step1[2 ] * (tran_high_t)cospi_8_64 + step1[3 ] * (tran_high_t)cospi_24_64;
step2[2 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[3 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step2[4 ] = HIGHBD_WRAPLOW(step1[4 ] + step1[5 ], bd);
step2[5 ] = HIGHBD_WRAPLOW(step1[4 ] - step1[5 ], bd);
step2[6 ] = HIGHBD_WRAPLOW(-step1[6 ] + step1[7 ], bd);
step2[7 ] = HIGHBD_WRAPLOW(step1[6 ] + step1[7 ], bd);
step2[8 ] = step1[8 ];
step2[15 ] = step1[15 ];
temp1 = -step1[9 ] * (tran_high_t)cospi_8_64 +
step1[14 ] * (tran_high_t)cospi_24_64;
temp2 =
step1[9 ] * (tran_high_t)cospi_24_64 + step1[14 ] * (tran_high_t)cospi_8_64;
step2[9 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[14 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = -step1[10 ] * (tran_high_t)cospi_24_64 -
step1[13 ] * (tran_high_t)cospi_8_64;
temp2 = -step1[10 ] * (tran_high_t)cospi_8_64 +
step1[13 ] * (tran_high_t)cospi_24_64;
step2[10 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[13 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step2[11 ] = step1[11 ];
step2[12 ] = step1[12 ];
// stage 5
step1[0 ] = HIGHBD_WRAPLOW(step2[0 ] + step2[3 ], bd);
step1[1 ] = HIGHBD_WRAPLOW(step2[1 ] + step2[2 ], bd);
step1[2 ] = HIGHBD_WRAPLOW(step2[1 ] - step2[2 ], bd);
step1[3 ] = HIGHBD_WRAPLOW(step2[0 ] - step2[3 ], bd);
step1[4 ] = step2[4 ];
temp1 = (step2[6 ] - step2[5 ]) * (tran_high_t)cospi_16_64;
temp2 = (step2[5 ] + step2[6 ]) * (tran_high_t)cospi_16_64;
step1[5 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[6 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step1[7 ] = step2[7 ];
step1[8 ] = HIGHBD_WRAPLOW(step2[8 ] + step2[11 ], bd);
step1[9 ] = HIGHBD_WRAPLOW(step2[9 ] + step2[10 ], bd);
step1[10 ] = HIGHBD_WRAPLOW(step2[9 ] - step2[10 ], bd);
step1[11 ] = HIGHBD_WRAPLOW(step2[8 ] - step2[11 ], bd);
step1[12 ] = HIGHBD_WRAPLOW(-step2[12 ] + step2[15 ], bd);
step1[13 ] = HIGHBD_WRAPLOW(-step2[13 ] + step2[14 ], bd);
step1[14 ] = HIGHBD_WRAPLOW(step2[13 ] + step2[14 ], bd);
step1[15 ] = HIGHBD_WRAPLOW(step2[12 ] + step2[15 ], bd);
// stage 6
step2[0 ] = HIGHBD_WRAPLOW(step1[0 ] + step1[7 ], bd);
step2[1 ] = HIGHBD_WRAPLOW(step1[1 ] + step1[6 ], bd);
step2[2 ] = HIGHBD_WRAPLOW(step1[2 ] + step1[5 ], bd);
step2[3 ] = HIGHBD_WRAPLOW(step1[3 ] + step1[4 ], bd);
step2[4 ] = HIGHBD_WRAPLOW(step1[3 ] - step1[4 ], bd);
step2[5 ] = HIGHBD_WRAPLOW(step1[2 ] - step1[5 ], bd);
step2[6 ] = HIGHBD_WRAPLOW(step1[1 ] - step1[6 ], bd);
step2[7 ] = HIGHBD_WRAPLOW(step1[0 ] - step1[7 ], bd);
step2[8 ] = step1[8 ];
step2[9 ] = step1[9 ];
temp1 = (-step1[10 ] + step1[13 ]) * (tran_high_t)cospi_16_64;
temp2 = (step1[10 ] + step1[13 ]) * (tran_high_t)cospi_16_64;
step2[10 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[13 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = (-step1[11 ] + step1[12 ]) * (tran_high_t)cospi_16_64;
temp2 = (step1[11 ] + step1[12 ]) * (tran_high_t)cospi_16_64;
step2[11 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[12 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step2[14 ] = step1[14 ];
step2[15 ] = step1[15 ];
// stage 7
output[0 ] = HIGHBD_WRAPLOW(step2[0 ] + step2[15 ], bd);
output[1 ] = HIGHBD_WRAPLOW(step2[1 ] + step2[14 ], bd);
output[2 ] = HIGHBD_WRAPLOW(step2[2 ] + step2[13 ], bd);
output[3 ] = HIGHBD_WRAPLOW(step2[3 ] + step2[12 ], bd);
output[4 ] = HIGHBD_WRAPLOW(step2[4 ] + step2[11 ], bd);
output[5 ] = HIGHBD_WRAPLOW(step2[5 ] + step2[10 ], bd);
output[6 ] = HIGHBD_WRAPLOW(step2[6 ] + step2[9 ], bd);
output[7 ] = HIGHBD_WRAPLOW(step2[7 ] + step2[8 ], bd);
output[8 ] = HIGHBD_WRAPLOW(step2[7 ] - step2[8 ], bd);
output[9 ] = HIGHBD_WRAPLOW(step2[6 ] - step2[9 ], bd);
output[10 ] = HIGHBD_WRAPLOW(step2[5 ] - step2[10 ], bd);
output[11 ] = HIGHBD_WRAPLOW(step2[4 ] - step2[11 ], bd);
output[12 ] = HIGHBD_WRAPLOW(step2[3 ] - step2[12 ], bd);
output[13 ] = HIGHBD_WRAPLOW(step2[2 ] - step2[13 ], bd);
output[14 ] = HIGHBD_WRAPLOW(step2[1 ] - step2[14 ], bd);
output[15 ] = HIGHBD_WRAPLOW(step2[0 ] - step2[15 ], bd);
}
void vpx_highbd_idct16x16_256_add_c(const tran_low_t *input, uint16_t *dest,
int stride, 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 ];
// First transform rows
for (i = 0 ; i < 16 ; ++i) {
vpx_highbd_idct16_c(input, outptr, bd);
input += 16 ;
outptr += 16 ;
}
// Then transform columns
for (i = 0 ; i < 16 ; ++i) {
for (j = 0 ; j < 16 ; ++j) temp_in[j] = out[j * 16 + i];
vpx_highbd_idct16_c(temp_in, temp_out, bd);
for (j = 0 ; j < 16 ; ++j) {
dest[j * stride + i] = highbd_clip_pixel_add(
dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6 ), bd);
}
}
}
void vpx_highbd_idct16x16_38_add_c(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int i, j;
tran_low_t out[16 * 16 ] = { 0 };
tran_low_t *outptr = out;
tran_low_t temp_in[16 ], temp_out[16 ];
// First transform rows. Since all non-zero dct coefficients are in
// upper-left 8x8 area, we only need to calculate first 8 rows here.
for (i = 0 ; i < 8 ; ++i) {
vpx_highbd_idct16_c(input, outptr, bd);
input += 16 ;
outptr += 16 ;
}
// Then transform columns
for (i = 0 ; i < 16 ; ++i) {
uint16_t *destT = dest;
for (j = 0 ; j < 16 ; ++j) temp_in[j] = out[j * 16 + i];
vpx_highbd_idct16_c(temp_in, temp_out, bd);
for (j = 0 ; j < 16 ; ++j) {
destT[i] = highbd_clip_pixel_add(destT[i],
ROUND_POWER_OF_TWO(temp_out[j], 6 ), bd);
destT += stride;
}
}
}
void vpx_highbd_idct16x16_10_add_c(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int i, j;
tran_low_t out[16 * 16 ] = { 0 };
tran_low_t *outptr = out;
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) {
vpx_highbd_idct16_c(input, outptr, bd);
input += 16 ;
outptr += 16 ;
}
// Then transform columns
for (i = 0 ; i < 16 ; ++i) {
for (j = 0 ; j < 16 ; ++j) temp_in[j] = out[j * 16 + i];
vpx_highbd_idct16_c(temp_in, temp_out, bd);
for (j = 0 ; j < 16 ; ++j) {
dest[j * stride + i] = highbd_clip_pixel_add(
dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6 ), bd);
}
}
}
void vpx_highbd_idct16x16_1_add_c(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int i, j;
tran_high_t a1;
tran_low_t out = HIGHBD_WRAPLOW(
dct_const_round_shift(input[0 ] * (tran_high_t)cospi_16_64), bd);
out =
HIGHBD_WRAPLOW(dct_const_round_shift(out * (tran_high_t)cospi_16_64), bd);
a1 = ROUND_POWER_OF_TWO(out, 6 );
for (j = 0 ; j < 16 ; ++j) {
for (i = 0 ; i < 16 ; ++i) dest[i] = highbd_clip_pixel_add(dest[i], a1, bd);
dest += stride;
}
}
static void highbd_idct32_c(const tran_low_t *input, tran_low_t *output,
int bd) {
tran_low_t step1[32 ], step2[32 ];
tran_high_t temp1, temp2;
(void )bd;
if (detect_invalid_highbd_input(input, 32 )) {
#if CONFIG_COEFFICIENT_RANGE_CHECKING
assert(0 && "invalid highbd txfm input" );
#endif // CONFIG_COEFFICIENT_RANGE_CHECKING
memset(output, 0 , sizeof (*output) * 32 );
return ;
}
// 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 ] * (tran_high_t)cospi_31_64 - input[31 ] * (tran_high_t)cospi_1_64;
temp2 =
input[1 ] * (tran_high_t)cospi_1_64 + input[31 ] * (tran_high_t)cospi_31_64;
step1[16 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[31 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = input[17 ] * (tran_high_t)cospi_15_64 -
input[15 ] * (tran_high_t)cospi_17_64;
temp2 = input[17 ] * (tran_high_t)cospi_17_64 +
input[15 ] * (tran_high_t)cospi_15_64;
step1[17 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[30 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 =
input[9 ] * (tran_high_t)cospi_23_64 - input[23 ] * (tran_high_t)cospi_9_64;
temp2 =
input[9 ] * (tran_high_t)cospi_9_64 + input[23 ] * (tran_high_t)cospi_23_64;
step1[18 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[29 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 =
input[25 ] * (tran_high_t)cospi_7_64 - input[7 ] * (tran_high_t)cospi_25_64;
temp2 =
input[25 ] * (tran_high_t)cospi_25_64 + input[7 ] * (tran_high_t)cospi_7_64;
step1[19 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[28 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 =
input[5 ] * (tran_high_t)cospi_27_64 - input[27 ] * (tran_high_t)cospi_5_64;
temp2 =
input[5 ] * (tran_high_t)cospi_5_64 + input[27 ] * (tran_high_t)cospi_27_64;
step1[20 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[27 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = input[21 ] * (tran_high_t)cospi_11_64 -
input[11 ] * (tran_high_t)cospi_21_64;
temp2 = input[21 ] * (tran_high_t)cospi_21_64 +
input[11 ] * (tran_high_t)cospi_11_64;
step1[21 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[26 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = input[13 ] * (tran_high_t)cospi_19_64 -
input[19 ] * (tran_high_t)cospi_13_64;
temp2 = input[13 ] * (tran_high_t)cospi_13_64 +
input[19 ] * (tran_high_t)cospi_19_64;
step1[22 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[25 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 =
input[29 ] * (tran_high_t)cospi_3_64 - input[3 ] * (tran_high_t)cospi_29_64;
temp2 =
input[29 ] * (tran_high_t)cospi_29_64 + input[3 ] * (tran_high_t)cospi_3_64;
step1[23 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[24 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
// stage 2
step2[0 ] = step1[0 ];
step2[1 ] = step1[1 ];
step2[2 ] = step1[2 ];
step2[3 ] = step1[3 ];
step2[4 ] = step1[4 ];
step2[5 ] = step1[5 ];
step2[6 ] = step1[6 ];
step2[7 ] = step1[7 ];
temp1 =
step1[8 ] * (tran_high_t)cospi_30_64 - step1[15 ] * (tran_high_t)cospi_2_64;
temp2 =
step1[8 ] * (tran_high_t)cospi_2_64 + step1[15 ] * (tran_high_t)cospi_30_64;
step2[8 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[15 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = step1[9 ] * (tran_high_t)cospi_14_64 -
step1[14 ] * (tran_high_t)cospi_18_64;
temp2 = step1[9 ] * (tran_high_t)cospi_18_64 +
step1[14 ] * (tran_high_t)cospi_14_64;
step2[9 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[14 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = step1[10 ] * (tran_high_t)cospi_22_64 -
step1[13 ] * (tran_high_t)cospi_10_64;
temp2 = step1[10 ] * (tran_high_t)cospi_10_64 +
step1[13 ] * (tran_high_t)cospi_22_64;
step2[10 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[13 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = step1[11 ] * (tran_high_t)cospi_6_64 -
step1[12 ] * (tran_high_t)cospi_26_64;
temp2 = step1[11 ] * (tran_high_t)cospi_26_64 +
step1[12 ] * (tran_high_t)cospi_6_64;
step2[11 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[12 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step2[16 ] = HIGHBD_WRAPLOW(step1[16 ] + step1[17 ], bd);
step2[17 ] = HIGHBD_WRAPLOW(step1[16 ] - step1[17 ], bd);
step2[18 ] = HIGHBD_WRAPLOW(-step1[18 ] + step1[19 ], bd);
step2[19 ] = HIGHBD_WRAPLOW(step1[18 ] + step1[19 ], bd);
step2[20 ] = HIGHBD_WRAPLOW(step1[20 ] + step1[21 ], bd);
step2[21 ] = HIGHBD_WRAPLOW(step1[20 ] - step1[21 ], bd);
step2[22 ] = HIGHBD_WRAPLOW(-step1[22 ] + step1[23 ], bd);
step2[23 ] = HIGHBD_WRAPLOW(step1[22 ] + step1[23 ], bd);
step2[24 ] = HIGHBD_WRAPLOW(step1[24 ] + step1[25 ], bd);
step2[25 ] = HIGHBD_WRAPLOW(step1[24 ] - step1[25 ], bd);
step2[26 ] = HIGHBD_WRAPLOW(-step1[26 ] + step1[27 ], bd);
step2[27 ] = HIGHBD_WRAPLOW(step1[26 ] + step1[27 ], bd);
step2[28 ] = HIGHBD_WRAPLOW(step1[28 ] + step1[29 ], bd);
step2[29 ] = HIGHBD_WRAPLOW(step1[28 ] - step1[29 ], bd);
step2[30 ] = HIGHBD_WRAPLOW(-step1[30 ] + step1[31 ], bd);
step2[31 ] = HIGHBD_WRAPLOW(step1[30 ] + step1[31 ], bd);
// stage 3
step1[0 ] = step2[0 ];
step1[1 ] = step2[1 ];
step1[2 ] = step2[2 ];
step1[3 ] = step2[3 ];
temp1 =
step2[4 ] * (tran_high_t)cospi_28_64 - step2[7 ] * (tran_high_t)cospi_4_64;
temp2 =
step2[4 ] * (tran_high_t)cospi_4_64 + step2[7 ] * (tran_high_t)cospi_28_64;
step1[4 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[7 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 =
step2[5 ] * (tran_high_t)cospi_12_64 - step2[6 ] * (tran_high_t)cospi_20_64;
temp2 =
step2[5 ] * (tran_high_t)cospi_20_64 + step2[6 ] * (tran_high_t)cospi_12_64;
step1[5 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[6 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step1[8 ] = HIGHBD_WRAPLOW(step2[8 ] + step2[9 ], bd);
step1[9 ] = HIGHBD_WRAPLOW(step2[8 ] - step2[9 ], bd);
step1[10 ] = HIGHBD_WRAPLOW(-step2[10 ] + step2[11 ], bd);
step1[11 ] = HIGHBD_WRAPLOW(step2[10 ] + step2[11 ], bd);
step1[12 ] = HIGHBD_WRAPLOW(step2[12 ] + step2[13 ], bd);
step1[13 ] = HIGHBD_WRAPLOW(step2[12 ] - step2[13 ], bd);
step1[14 ] = HIGHBD_WRAPLOW(-step2[14 ] + step2[15 ], bd);
step1[15 ] = HIGHBD_WRAPLOW(step2[14 ] + step2[15 ], bd);
step1[16 ] = step2[16 ];
step1[31 ] = step2[31 ];
temp1 = -step2[17 ] * (tran_high_t)cospi_4_64 +
step2[30 ] * (tran_high_t)cospi_28_64;
temp2 = step2[17 ] * (tran_high_t)cospi_28_64 +
step2[30 ] * (tran_high_t)cospi_4_64;
step1[17 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[30 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = -step2[18 ] * (tran_high_t)cospi_28_64 -
step2[29 ] * (tran_high_t)cospi_4_64;
temp2 = -step2[18 ] * (tran_high_t)cospi_4_64 +
step2[29 ] * (tran_high_t)cospi_28_64;
step1[18 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[29 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step1[19 ] = step2[19 ];
step1[20 ] = step2[20 ];
temp1 = -step2[21 ] * (tran_high_t)cospi_20_64 +
step2[26 ] * (tran_high_t)cospi_12_64;
temp2 = step2[21 ] * (tran_high_t)cospi_12_64 +
step2[26 ] * (tran_high_t)cospi_20_64;
step1[21 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[26 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = -step2[22 ] * (tran_high_t)cospi_12_64 -
step2[25 ] * (tran_high_t)cospi_20_64;
temp2 = -step2[22 ] * (tran_high_t)cospi_20_64 +
step2[25 ] * (tran_high_t)cospi_12_64;
step1[22 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[25 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step1[23 ] = step2[23 ];
step1[24 ] = step2[24 ];
step1[27 ] = step2[27 ];
step1[28 ] = step2[28 ];
// stage 4
temp1 = (step1[0 ] + step1[1 ]) * (tran_high_t)cospi_16_64;
temp2 = (step1[0 ] - step1[1 ]) * (tran_high_t)cospi_16_64;
step2[0 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[1 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 =
step1[2 ] * (tran_high_t)cospi_24_64 - step1[3 ] * (tran_high_t)cospi_8_64;
temp2 =
step1[2 ] * (tran_high_t)cospi_8_64 + step1[3 ] * (tran_high_t)cospi_24_64;
step2[2 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[3 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step2[4 ] = HIGHBD_WRAPLOW(step1[4 ] + step1[5 ], bd);
step2[5 ] = HIGHBD_WRAPLOW(step1[4 ] - step1[5 ], bd);
step2[6 ] = HIGHBD_WRAPLOW(-step1[6 ] + step1[7 ], bd);
step2[7 ] = HIGHBD_WRAPLOW(step1[6 ] + step1[7 ], bd);
step2[8 ] = step1[8 ];
step2[15 ] = step1[15 ];
temp1 = -step1[9 ] * (tran_high_t)cospi_8_64 +
step1[14 ] * (tran_high_t)cospi_24_64;
temp2 =
step1[9 ] * (tran_high_t)cospi_24_64 + step1[14 ] * (tran_high_t)cospi_8_64;
step2[9 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[14 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = -step1[10 ] * (tran_high_t)cospi_24_64 -
step1[13 ] * (tran_high_t)cospi_8_64;
temp2 = -step1[10 ] * (tran_high_t)cospi_8_64 +
step1[13 ] * (tran_high_t)cospi_24_64;
step2[10 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[13 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step2[11 ] = step1[11 ];
step2[12 ] = step1[12 ];
step2[16 ] = HIGHBD_WRAPLOW(step1[16 ] + step1[19 ], bd);
step2[17 ] = HIGHBD_WRAPLOW(step1[17 ] + step1[18 ], bd);
step2[18 ] = HIGHBD_WRAPLOW(step1[17 ] - step1[18 ], bd);
step2[19 ] = HIGHBD_WRAPLOW(step1[16 ] - step1[19 ], bd);
step2[20 ] = HIGHBD_WRAPLOW(-step1[20 ] + step1[23 ], bd);
step2[21 ] = HIGHBD_WRAPLOW(-step1[21 ] + step1[22 ], bd);
step2[22 ] = HIGHBD_WRAPLOW(step1[21 ] + step1[22 ], bd);
step2[23 ] = HIGHBD_WRAPLOW(step1[20 ] + step1[23 ], bd);
step2[24 ] = HIGHBD_WRAPLOW(step1[24 ] + step1[27 ], bd);
step2[25 ] = HIGHBD_WRAPLOW(step1[25 ] + step1[26 ], bd);
step2[26 ] = HIGHBD_WRAPLOW(step1[25 ] - step1[26 ], bd);
step2[27 ] = HIGHBD_WRAPLOW(step1[24 ] - step1[27 ], bd);
step2[28 ] = HIGHBD_WRAPLOW(-step1[28 ] + step1[31 ], bd);
step2[29 ] = HIGHBD_WRAPLOW(-step1[29 ] + step1[30 ], bd);
step2[30 ] = HIGHBD_WRAPLOW(step1[29 ] + step1[30 ], bd);
step2[31 ] = HIGHBD_WRAPLOW(step1[28 ] + step1[31 ], bd);
// stage 5
step1[0 ] = HIGHBD_WRAPLOW(step2[0 ] + step2[3 ], bd);
step1[1 ] = HIGHBD_WRAPLOW(step2[1 ] + step2[2 ], bd);
step1[2 ] = HIGHBD_WRAPLOW(step2[1 ] - step2[2 ], bd);
step1[3 ] = HIGHBD_WRAPLOW(step2[0 ] - step2[3 ], bd);
step1[4 ] = step2[4 ];
temp1 = (step2[6 ] - step2[5 ]) * (tran_high_t)cospi_16_64;
temp2 = (step2[5 ] + step2[6 ]) * (tran_high_t)cospi_16_64;
step1[5 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[6 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step1[7 ] = step2[7 ];
step1[8 ] = HIGHBD_WRAPLOW(step2[8 ] + step2[11 ], bd);
step1[9 ] = HIGHBD_WRAPLOW(step2[9 ] + step2[10 ], bd);
step1[10 ] = HIGHBD_WRAPLOW(step2[9 ] - step2[10 ], bd);
step1[11 ] = HIGHBD_WRAPLOW(step2[8 ] - step2[11 ], bd);
step1[12 ] = HIGHBD_WRAPLOW(-step2[12 ] + step2[15 ], bd);
step1[13 ] = HIGHBD_WRAPLOW(-step2[13 ] + step2[14 ], bd);
step1[14 ] = HIGHBD_WRAPLOW(step2[13 ] + step2[14 ], bd);
step1[15 ] = HIGHBD_WRAPLOW(step2[12 ] + step2[15 ], bd);
step1[16 ] = step2[16 ];
step1[17 ] = step2[17 ];
temp1 = -step2[18 ] * (tran_high_t)cospi_8_64 +
step2[29 ] * (tran_high_t)cospi_24_64;
temp2 = step2[18 ] * (tran_high_t)cospi_24_64 +
step2[29 ] * (tran_high_t)cospi_8_64;
step1[18 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[29 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = -step2[19 ] * (tran_high_t)cospi_8_64 +
step2[28 ] * (tran_high_t)cospi_24_64;
temp2 = step2[19 ] * (tran_high_t)cospi_24_64 +
step2[28 ] * (tran_high_t)cospi_8_64;
step1[19 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[28 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = -step2[20 ] * (tran_high_t)cospi_24_64 -
step2[27 ] * (tran_high_t)cospi_8_64;
temp2 = -step2[20 ] * (tran_high_t)cospi_8_64 +
step2[27 ] * (tran_high_t)cospi_24_64;
step1[20 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[27 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = -step2[21 ] * (tran_high_t)cospi_24_64 -
step2[26 ] * (tran_high_t)cospi_8_64;
temp2 = -step2[21 ] * (tran_high_t)cospi_8_64 +
step2[26 ] * (tran_high_t)cospi_24_64;
step1[21 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[26 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step1[22 ] = step2[22 ];
step1[23 ] = step2[23 ];
step1[24 ] = step2[24 ];
step1[25 ] = step2[25 ];
step1[30 ] = step2[30 ];
step1[31 ] = step2[31 ];
// stage 6
step2[0 ] = HIGHBD_WRAPLOW(step1[0 ] + step1[7 ], bd);
step2[1 ] = HIGHBD_WRAPLOW(step1[1 ] + step1[6 ], bd);
step2[2 ] = HIGHBD_WRAPLOW(step1[2 ] + step1[5 ], bd);
step2[3 ] = HIGHBD_WRAPLOW(step1[3 ] + step1[4 ], bd);
step2[4 ] = HIGHBD_WRAPLOW(step1[3 ] - step1[4 ], bd);
step2[5 ] = HIGHBD_WRAPLOW(step1[2 ] - step1[5 ], bd);
step2[6 ] = HIGHBD_WRAPLOW(step1[1 ] - step1[6 ], bd);
step2[7 ] = HIGHBD_WRAPLOW(step1[0 ] - step1[7 ], bd);
step2[8 ] = step1[8 ];
step2[9 ] = step1[9 ];
temp1 = (-step1[10 ] + step1[13 ]) * (tran_high_t)cospi_16_64;
temp2 = (step1[10 ] + step1[13 ]) * (tran_high_t)cospi_16_64;
step2[10 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[13 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = (-step1[11 ] + step1[12 ]) * (tran_high_t)cospi_16_64;
temp2 = (step1[11 ] + step1[12 ]) * (tran_high_t)cospi_16_64;
step2[11 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step2[12 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step2[14 ] = step1[14 ];
step2[15 ] = step1[15 ];
step2[16 ] = HIGHBD_WRAPLOW(step1[16 ] + step1[23 ], bd);
step2[17 ] = HIGHBD_WRAPLOW(step1[17 ] + step1[22 ], bd);
step2[18 ] = HIGHBD_WRAPLOW(step1[18 ] + step1[21 ], bd);
step2[19 ] = HIGHBD_WRAPLOW(step1[19 ] + step1[20 ], bd);
step2[20 ] = HIGHBD_WRAPLOW(step1[19 ] - step1[20 ], bd);
step2[21 ] = HIGHBD_WRAPLOW(step1[18 ] - step1[21 ], bd);
step2[22 ] = HIGHBD_WRAPLOW(step1[17 ] - step1[22 ], bd);
step2[23 ] = HIGHBD_WRAPLOW(step1[16 ] - step1[23 ], bd);
step2[24 ] = HIGHBD_WRAPLOW(-step1[24 ] + step1[31 ], bd);
step2[25 ] = HIGHBD_WRAPLOW(-step1[25 ] + step1[30 ], bd);
step2[26 ] = HIGHBD_WRAPLOW(-step1[26 ] + step1[29 ], bd);
step2[27 ] = HIGHBD_WRAPLOW(-step1[27 ] + step1[28 ], bd);
step2[28 ] = HIGHBD_WRAPLOW(step1[27 ] + step1[28 ], bd);
step2[29 ] = HIGHBD_WRAPLOW(step1[26 ] + step1[29 ], bd);
step2[30 ] = HIGHBD_WRAPLOW(step1[25 ] + step1[30 ], bd);
step2[31 ] = HIGHBD_WRAPLOW(step1[24 ] + step1[31 ], bd);
// stage 7
step1[0 ] = HIGHBD_WRAPLOW(step2[0 ] + step2[15 ], bd);
step1[1 ] = HIGHBD_WRAPLOW(step2[1 ] + step2[14 ], bd);
step1[2 ] = HIGHBD_WRAPLOW(step2[2 ] + step2[13 ], bd);
step1[3 ] = HIGHBD_WRAPLOW(step2[3 ] + step2[12 ], bd);
step1[4 ] = HIGHBD_WRAPLOW(step2[4 ] + step2[11 ], bd);
step1[5 ] = HIGHBD_WRAPLOW(step2[5 ] + step2[10 ], bd);
step1[6 ] = HIGHBD_WRAPLOW(step2[6 ] + step2[9 ], bd);
step1[7 ] = HIGHBD_WRAPLOW(step2[7 ] + step2[8 ], bd);
step1[8 ] = HIGHBD_WRAPLOW(step2[7 ] - step2[8 ], bd);
step1[9 ] = HIGHBD_WRAPLOW(step2[6 ] - step2[9 ], bd);
step1[10 ] = HIGHBD_WRAPLOW(step2[5 ] - step2[10 ], bd);
step1[11 ] = HIGHBD_WRAPLOW(step2[4 ] - step2[11 ], bd);
step1[12 ] = HIGHBD_WRAPLOW(step2[3 ] - step2[12 ], bd);
step1[13 ] = HIGHBD_WRAPLOW(step2[2 ] - step2[13 ], bd);
step1[14 ] = HIGHBD_WRAPLOW(step2[1 ] - step2[14 ], bd);
step1[15 ] = HIGHBD_WRAPLOW(step2[0 ] - step2[15 ], bd);
step1[16 ] = step2[16 ];
step1[17 ] = step2[17 ];
step1[18 ] = step2[18 ];
step1[19 ] = step2[19 ];
temp1 = (-step2[20 ] + step2[27 ]) * (tran_high_t)cospi_16_64;
temp2 = (step2[20 ] + step2[27 ]) * (tran_high_t)cospi_16_64;
step1[20 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[27 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = (-step2[21 ] + step2[26 ]) * (tran_high_t)cospi_16_64;
temp2 = (step2[21 ] + step2[26 ]) * (tran_high_t)cospi_16_64;
step1[21 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[26 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = (-step2[22 ] + step2[25 ]) * (tran_high_t)cospi_16_64;
temp2 = (step2[22 ] + step2[25 ]) * (tran_high_t)cospi_16_64;
step1[22 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[25 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
temp1 = (-step2[23 ] + step2[24 ]) * (tran_high_t)cospi_16_64;
temp2 = (step2[23 ] + step2[24 ]) * (tran_high_t)cospi_16_64;
step1[23 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp1), bd);
step1[24 ] = HIGHBD_WRAPLOW(dct_const_round_shift(temp2), bd);
step1[28 ] = step2[28 ];
step1[29 ] = step2[29 ];
step1[30 ] = step2[30 ];
step1[31 ] = step2[31 ];
// final stage
output[0 ] = HIGHBD_WRAPLOW(step1[0 ] + step1[31 ], bd);
output[1 ] = HIGHBD_WRAPLOW(step1[1 ] + step1[30 ], bd);
output[2 ] = HIGHBD_WRAPLOW(step1[2 ] + step1[29 ], bd);
output[3 ] = HIGHBD_WRAPLOW(step1[3 ] + step1[28 ], bd);
output[4 ] = HIGHBD_WRAPLOW(step1[4 ] + step1[27 ], bd);
output[5 ] = HIGHBD_WRAPLOW(step1[5 ] + step1[26 ], bd);
output[6 ] = HIGHBD_WRAPLOW(step1[6 ] + step1[25 ], bd);
output[7 ] = HIGHBD_WRAPLOW(step1[7 ] + step1[24 ], bd);
output[8 ] = HIGHBD_WRAPLOW(step1[8 ] + step1[23 ], bd);
output[9 ] = HIGHBD_WRAPLOW(step1[9 ] + step1[22 ], bd);
output[10 ] = HIGHBD_WRAPLOW(step1[10 ] + step1[21 ], bd);
output[11 ] = HIGHBD_WRAPLOW(step1[11 ] + step1[20 ], bd);
output[12 ] = HIGHBD_WRAPLOW(step1[12 ] + step1[19 ], bd);
output[13 ] = HIGHBD_WRAPLOW(step1[13 ] + step1[18 ], bd);
output[14 ] = HIGHBD_WRAPLOW(step1[14 ] + step1[17 ], bd);
output[15 ] = HIGHBD_WRAPLOW(step1[15 ] + step1[16 ], bd);
output[16 ] = HIGHBD_WRAPLOW(step1[15 ] - step1[16 ], bd);
output[17 ] = HIGHBD_WRAPLOW(step1[14 ] - step1[17 ], bd);
output[18 ] = HIGHBD_WRAPLOW(step1[13 ] - step1[18 ], bd);
output[19 ] = HIGHBD_WRAPLOW(step1[12 ] - step1[19 ], bd);
output[20 ] = HIGHBD_WRAPLOW(step1[11 ] - step1[20 ], bd);
output[21 ] = HIGHBD_WRAPLOW(step1[10 ] - step1[21 ], bd);
output[22 ] = HIGHBD_WRAPLOW(step1[9 ] - step1[22 ], bd);
output[23 ] = HIGHBD_WRAPLOW(step1[8 ] - step1[23 ], bd);
output[24 ] = HIGHBD_WRAPLOW(step1[7 ] - step1[24 ], bd);
output[25 ] = HIGHBD_WRAPLOW(step1[6 ] - step1[25 ], bd);
output[26 ] = HIGHBD_WRAPLOW(step1[5 ] - step1[26 ], bd);
output[27 ] = HIGHBD_WRAPLOW(step1[4 ] - step1[27 ], bd);
output[28 ] = HIGHBD_WRAPLOW(step1[3 ] - step1[28 ], bd);
output[29 ] = HIGHBD_WRAPLOW(step1[2 ] - step1[29 ], bd);
output[30 ] = HIGHBD_WRAPLOW(step1[1 ] - step1[30 ], bd);
output[31 ] = HIGHBD_WRAPLOW(step1[0 ] - step1[31 ], bd);
}
void vpx_highbd_idct32x32_1024_add_c(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int i, j;
tran_low_t out[32 * 32 ];
tran_low_t *outptr = out;
tran_low_t temp_in[32 ], temp_out[32 ];
// Rows
for (i = 0 ; i < 32 ; ++i) {
tran_low_t zero_coeff = 0 ;
for (j = 0 ; j < 32 ; ++j) zero_coeff |= input[j];
if (zero_coeff)
highbd_idct32_c(input, outptr, bd);
else
memset(outptr, 0 , sizeof (tran_low_t) * 32 );
input += 32 ;
outptr += 32 ;
}
// Columns
for (i = 0 ; i < 32 ; ++i) {
for (j = 0 ; j < 32 ; ++j) temp_in[j] = out[j * 32 + i];
highbd_idct32_c(temp_in, temp_out, bd);
for (j = 0 ; j < 32 ; ++j) {
dest[j * stride + i] = highbd_clip_pixel_add(
dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6 ), bd);
}
}
}
void vpx_highbd_idct32x32_135_add_c(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int i, j;
tran_low_t out[32 * 32 ] = { 0 };
tran_low_t *outptr = out;
tran_low_t temp_in[32 ], temp_out[32 ];
// Rows
// Only upper-left 16x16 has non-zero coeff
for (i = 0 ; i < 16 ; ++i) {
highbd_idct32_c(input, outptr, bd);
input += 32 ;
outptr += 32 ;
}
// Columns
for (i = 0 ; i < 32 ; ++i) {
uint16_t *destT = dest;
for (j = 0 ; j < 32 ; ++j) temp_in[j] = out[j * 32 + i];
highbd_idct32_c(temp_in, temp_out, bd);
for (j = 0 ; j < 32 ; ++j) {
destT[i] = highbd_clip_pixel_add(destT[i],
ROUND_POWER_OF_TWO(temp_out[j], 6 ), bd);
destT += stride;
}
}
}
void vpx_highbd_idct32x32_34_add_c(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int i, j;
tran_low_t out[32 * 32 ] = { 0 };
tran_low_t *outptr = out;
tran_low_t temp_in[32 ], temp_out[32 ];
// Rows
// Only upper-left 8x8 has non-zero coeff
for (i = 0 ; i < 8 ; ++i) {
highbd_idct32_c(input, outptr, bd);
input += 32 ;
outptr += 32 ;
}
// Columns
for (i = 0 ; i < 32 ; ++i) {
for (j = 0 ; j < 32 ; ++j) temp_in[j] = out[j * 32 + i];
highbd_idct32_c(temp_in, temp_out, bd);
for (j = 0 ; j < 32 ; ++j) {
dest[j * stride + i] = highbd_clip_pixel_add(
dest[j * stride + i], ROUND_POWER_OF_TWO(temp_out[j], 6 ), bd);
}
}
}
void vpx_highbd_idct32x32_1_add_c(const tran_low_t *input, uint16_t *dest,
int stride, int bd) {
int i, j;
int a1;
tran_low_t out = HIGHBD_WRAPLOW(
dct_const_round_shift(input[0 ] * (tran_high_t)cospi_16_64), bd);
out =
HIGHBD_WRAPLOW(dct_const_round_shift(out * (tran_high_t)cospi_16_64), bd);
a1 = ROUND_POWER_OF_TWO(out, 6 );
for (j = 0 ; j < 32 ; ++j) {
for (i = 0 ; i < 32 ; ++i) dest[i] = highbd_clip_pixel_add(dest[i], a1, bd);
dest += stride;
}
}
#endif // CONFIG_VP9_HIGHBITDEPTH
Messung V0.5 in Prozent C=93 H=82 G=87
¤ Dauer der Verarbeitung: 0.34 Sekunden
(vorverarbeitet am 2026-06-04)
¤
*© Formatika GbR, Deutschland