005552639b
The commit changed the name of files and function to remove obselete reference to LLM and x8. Change-Id: I973b20fc1a55149ed68b5408b3874768e6f88516
1060 lines
33 KiB
C
1060 lines
33 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <assert.h>
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#include <math.h>
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#include "./vpx_config.h"
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#include "vp9/common/vp9_systemdependent.h"
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#include "vp9/common/vp9_blockd.h"
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#include "vp9/common/vp9_idct.h"
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static void fdct4_1d(int16_t *input, int16_t *output) {
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int16_t step[4];
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int temp1, temp2;
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step[0] = input[0] + input[3];
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step[1] = input[1] + input[2];
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step[2] = input[1] - input[2];
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step[3] = input[0] - input[3];
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temp1 = (step[0] + step[1]) * cospi_16_64;
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temp2 = (step[0] - step[1]) * cospi_16_64;
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output[0] = dct_const_round_shift(temp1);
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output[2] = dct_const_round_shift(temp2);
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temp1 = step[2] * cospi_24_64 + step[3] * cospi_8_64;
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temp2 = -step[2] * cospi_8_64 + step[3] * cospi_24_64;
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output[1] = dct_const_round_shift(temp1);
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output[3] = dct_const_round_shift(temp2);
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}
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void vp9_short_fdct4x4_c(int16_t *input, int16_t *output, int pitch) {
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int16_t out[4 * 4];
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int16_t *outptr = &out[0];
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const int short_pitch = pitch >> 1;
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int i, j;
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int16_t temp_in[4], temp_out[4];
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// Columns
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for (i = 0; i < 4; ++i) {
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for (j = 0; j < 4; ++j)
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temp_in[j] = input[j * short_pitch + i] << 4;
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if (i == 0 && temp_in[0])
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temp_in[0] += 1;
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fdct4_1d(temp_in, temp_out);
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for (j = 0; j < 4; ++j)
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outptr[j * 4 + i] = temp_out[j];
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}
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// Rows
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for (i = 0; i < 4; ++i) {
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for (j = 0; j < 4; ++j)
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temp_in[j] = out[j + i * 4];
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fdct4_1d(temp_in, temp_out);
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for (j = 0; j < 4; ++j)
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output[j + i * 4] = (temp_out[j] + 1) >> 2;
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}
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}
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static void fadst4_1d(int16_t *input, int16_t *output) {
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int x0, x1, x2, x3;
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int s0, s1, s2, s3, s4, s5, s6, s7;
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x0 = input[0];
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x1 = input[1];
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x2 = input[2];
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x3 = input[3];
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if (!(x0 | x1 | x2 | x3)) {
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output[0] = output[1] = output[2] = output[3] = 0;
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return;
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}
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s0 = sinpi_1_9 * x0;
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s1 = sinpi_4_9 * x0;
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s2 = sinpi_2_9 * x1;
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s3 = sinpi_1_9 * x1;
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s4 = sinpi_3_9 * x2;
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s5 = sinpi_4_9 * x3;
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s6 = sinpi_2_9 * x3;
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s7 = x0 + x1 - x3;
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x0 = s0 + s2 + s5;
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x1 = sinpi_3_9 * s7;
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x2 = s1 - s3 + s6;
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x3 = s4;
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s0 = x0 + x3;
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s1 = x1;
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s2 = x2 - x3;
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s3 = x2 - x0 + x3;
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// 1-D transform scaling factor is sqrt(2).
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output[0] = dct_const_round_shift(s0);
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output[1] = dct_const_round_shift(s1);
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output[2] = dct_const_round_shift(s2);
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output[3] = dct_const_round_shift(s3);
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}
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static const transform_2d FHT_4[] = {
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{ fdct4_1d, fdct4_1d }, // DCT_DCT = 0
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{ fadst4_1d, fdct4_1d }, // ADST_DCT = 1
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{ fdct4_1d, fadst4_1d }, // DCT_ADST = 2
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{ fadst4_1d, fadst4_1d } // ADST_ADST = 3
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};
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void vp9_short_fht4x4_c(int16_t *input, int16_t *output,
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int pitch, TX_TYPE tx_type) {
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int16_t out[4 * 4];
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int16_t *outptr = &out[0];
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int i, j;
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int16_t temp_in[4], temp_out[4];
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const transform_2d ht = FHT_4[tx_type];
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// Columns
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for (i = 0; i < 4; ++i) {
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for (j = 0; j < 4; ++j)
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temp_in[j] = input[j * pitch + i] << 4;
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if (i == 0 && temp_in[0])
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temp_in[0] += 1;
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ht.cols(temp_in, temp_out);
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for (j = 0; j < 4; ++j)
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outptr[j * 4 + i] = temp_out[j];
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}
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// Rows
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for (i = 0; i < 4; ++i) {
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for (j = 0; j < 4; ++j)
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temp_in[j] = out[j + i * 4];
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ht.rows(temp_in, temp_out);
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for (j = 0; j < 4; ++j)
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output[j + i * 4] = (temp_out[j] + 1) >> 2;
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}
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}
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void vp9_short_fdct8x4_c(int16_t *input, int16_t *output, int pitch) {
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vp9_short_fdct4x4_c(input, output, pitch);
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vp9_short_fdct4x4_c(input + 4, output + 16, pitch);
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}
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static void fdct8_1d(int16_t *input, int16_t *output) {
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/*canbe16*/ int s0, s1, s2, s3, s4, s5, s6, s7;
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/*needs32*/ int t0, t1, t2, t3;
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/*canbe16*/ int x0, x1, x2, x3;
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// stage 1
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s0 = input[0] + input[7];
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s1 = input[1] + input[6];
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s2 = input[2] + input[5];
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s3 = input[3] + input[4];
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s4 = input[3] - input[4];
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s5 = input[2] - input[5];
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s6 = input[1] - input[6];
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s7 = input[0] - input[7];
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// fdct4_1d(step, step);
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x0 = s0 + s3;
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x1 = s1 + s2;
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x2 = s1 - s2;
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x3 = s0 - s3;
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t0 = (x0 + x1) * cospi_16_64;
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t1 = (x0 - x1) * cospi_16_64;
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t2 = x2 * cospi_24_64 + x3 * cospi_8_64;
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t3 = -x2 * cospi_8_64 + x3 * cospi_24_64;
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output[0] = dct_const_round_shift(t0);
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output[2] = dct_const_round_shift(t2);
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output[4] = dct_const_round_shift(t1);
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output[6] = dct_const_round_shift(t3);
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// Stage 2
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t0 = (s6 - s5) * cospi_16_64;
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t1 = (s6 + s5) * cospi_16_64;
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t2 = dct_const_round_shift(t0);
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t3 = dct_const_round_shift(t1);
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// Stage 3
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x0 = s4 + t2;
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x1 = s4 - t2;
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x2 = s7 - t3;
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x3 = s7 + t3;
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// Stage 4
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t0 = x0 * cospi_28_64 + x3 * cospi_4_64;
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t1 = x1 * cospi_12_64 + x2 * cospi_20_64;
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t2 = x2 * cospi_12_64 + x1 * -cospi_20_64;
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t3 = x3 * cospi_28_64 + x0 * -cospi_4_64;
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output[1] = dct_const_round_shift(t0);
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output[3] = dct_const_round_shift(t2);
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output[5] = dct_const_round_shift(t1);
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output[7] = dct_const_round_shift(t3);
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}
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void vp9_short_fdct8x8_c(int16_t *input, int16_t *final_output, int pitch) {
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const int stride = pitch >> 1;
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int i, j;
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int16_t intermediate[64];
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// Transform columns
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{
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int16_t *output = intermediate;
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/*canbe16*/ int s0, s1, s2, s3, s4, s5, s6, s7;
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/*needs32*/ int t0, t1, t2, t3;
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/*canbe16*/ int x0, x1, x2, x3;
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int i;
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for (i = 0; i < 8; i++) {
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// stage 1
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s0 = (input[0 * stride] + input[7 * stride]) << 2;
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s1 = (input[1 * stride] + input[6 * stride]) << 2;
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s2 = (input[2 * stride] + input[5 * stride]) << 2;
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s3 = (input[3 * stride] + input[4 * stride]) << 2;
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s4 = (input[3 * stride] - input[4 * stride]) << 2;
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s5 = (input[2 * stride] - input[5 * stride]) << 2;
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s6 = (input[1 * stride] - input[6 * stride]) << 2;
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s7 = (input[0 * stride] - input[7 * stride]) << 2;
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// fdct4_1d(step, step);
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x0 = s0 + s3;
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x1 = s1 + s2;
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x2 = s1 - s2;
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x3 = s0 - s3;
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t0 = (x0 + x1) * cospi_16_64;
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t1 = (x0 - x1) * cospi_16_64;
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t2 = x2 * cospi_24_64 + x3 * cospi_8_64;
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t3 = -x2 * cospi_8_64 + x3 * cospi_24_64;
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output[0 * 8] = dct_const_round_shift(t0);
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output[2 * 8] = dct_const_round_shift(t2);
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output[4 * 8] = dct_const_round_shift(t1);
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output[6 * 8] = dct_const_round_shift(t3);
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// Stage 2
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t0 = (s6 - s5) * cospi_16_64;
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t1 = (s6 + s5) * cospi_16_64;
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t2 = dct_const_round_shift(t0);
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t3 = dct_const_round_shift(t1);
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// Stage 3
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x0 = s4 + t2;
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x1 = s4 - t2;
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x2 = s7 - t3;
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x3 = s7 + t3;
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// Stage 4
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t0 = x0 * cospi_28_64 + x3 * cospi_4_64;
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t1 = x1 * cospi_12_64 + x2 * cospi_20_64;
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t2 = x2 * cospi_12_64 + x1 * -cospi_20_64;
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t3 = x3 * cospi_28_64 + x0 * -cospi_4_64;
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output[1 * 8] = dct_const_round_shift(t0);
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output[3 * 8] = dct_const_round_shift(t2);
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output[5 * 8] = dct_const_round_shift(t1);
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output[7 * 8] = dct_const_round_shift(t3);
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input++;
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output++;
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}
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}
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// Rows
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for (i = 0; i < 8; ++i) {
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fdct8_1d(&intermediate[i * 8], &final_output[i * 8]);
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for (j = 0; j < 8; ++j)
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final_output[j + i * 8] /= 2;
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}
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}
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static void fadst8_1d(int16_t *input, int16_t *output) {
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int s0, s1, s2, s3, s4, s5, s6, s7;
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int x0 = input[7];
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int x1 = input[0];
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int x2 = input[5];
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int x3 = input[2];
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int x4 = input[3];
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int x5 = input[4];
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int x6 = input[1];
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int x7 = input[6];
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// stage 1
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s0 = cospi_2_64 * x0 + cospi_30_64 * x1;
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s1 = cospi_30_64 * x0 - cospi_2_64 * x1;
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s2 = cospi_10_64 * x2 + cospi_22_64 * x3;
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s3 = cospi_22_64 * x2 - cospi_10_64 * x3;
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s4 = cospi_18_64 * x4 + cospi_14_64 * x5;
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s5 = cospi_14_64 * x4 - cospi_18_64 * x5;
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s6 = cospi_26_64 * x6 + cospi_6_64 * x7;
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s7 = cospi_6_64 * x6 - cospi_26_64 * x7;
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x0 = dct_const_round_shift(s0 + s4);
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x1 = dct_const_round_shift(s1 + s5);
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x2 = dct_const_round_shift(s2 + s6);
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x3 = dct_const_round_shift(s3 + s7);
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x4 = dct_const_round_shift(s0 - s4);
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x5 = dct_const_round_shift(s1 - s5);
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x6 = dct_const_round_shift(s2 - s6);
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x7 = dct_const_round_shift(s3 - s7);
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// stage 2
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s0 = x0;
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s1 = x1;
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s2 = x2;
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s3 = x3;
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s4 = cospi_8_64 * x4 + cospi_24_64 * x5;
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s5 = cospi_24_64 * x4 - cospi_8_64 * x5;
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s6 = - cospi_24_64 * x6 + cospi_8_64 * x7;
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s7 = cospi_8_64 * x6 + cospi_24_64 * x7;
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x0 = s0 + s2;
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x1 = s1 + s3;
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x2 = s0 - s2;
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x3 = s1 - s3;
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x4 = dct_const_round_shift(s4 + s6);
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x5 = dct_const_round_shift(s5 + s7);
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x6 = dct_const_round_shift(s4 - s6);
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x7 = dct_const_round_shift(s5 - s7);
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// stage 3
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s2 = cospi_16_64 * (x2 + x3);
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s3 = cospi_16_64 * (x2 - x3);
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s6 = cospi_16_64 * (x6 + x7);
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s7 = cospi_16_64 * (x6 - x7);
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x2 = dct_const_round_shift(s2);
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x3 = dct_const_round_shift(s3);
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x6 = dct_const_round_shift(s6);
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x7 = dct_const_round_shift(s7);
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output[0] = x0;
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output[1] = - x4;
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output[2] = x6;
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output[3] = - x2;
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output[4] = x3;
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output[5] = - x7;
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output[6] = x5;
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output[7] = - x1;
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}
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static const transform_2d FHT_8[] = {
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{ fdct8_1d, fdct8_1d }, // DCT_DCT = 0
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{ fadst8_1d, fdct8_1d }, // ADST_DCT = 1
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{ fdct8_1d, fadst8_1d }, // DCT_ADST = 2
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{ fadst8_1d, fadst8_1d } // ADST_ADST = 3
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};
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void vp9_short_fht8x8_c(int16_t *input, int16_t *output,
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int pitch, TX_TYPE tx_type) {
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int16_t out[64];
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int16_t *outptr = &out[0];
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int i, j;
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int16_t temp_in[8], temp_out[8];
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const transform_2d ht = FHT_8[tx_type];
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// Columns
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for (i = 0; i < 8; ++i) {
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for (j = 0; j < 8; ++j)
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temp_in[j] = input[j * pitch + i] << 2;
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ht.cols(temp_in, temp_out);
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for (j = 0; j < 8; ++j)
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outptr[j * 8 + i] = temp_out[j];
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}
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// Rows
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for (i = 0; i < 8; ++i) {
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for (j = 0; j < 8; ++j)
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temp_in[j] = out[j + i * 8];
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ht.rows(temp_in, temp_out);
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for (j = 0; j < 8; ++j)
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output[j + i * 8] = temp_out[j] >> 1;
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}
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}
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void vp9_short_walsh4x4_c(short *input, short *output, int pitch) {
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int i;
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int a1, b1, c1, d1;
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short *ip = input;
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short *op = output;
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int pitch_short = pitch >> 1;
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for (i = 0; i < 4; i++) {
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a1 = ip[0 * pitch_short] + ip[3 * pitch_short];
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b1 = ip[1 * pitch_short] + ip[2 * pitch_short];
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c1 = ip[1 * pitch_short] - ip[2 * pitch_short];
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d1 = ip[0 * pitch_short] - ip[3 * pitch_short];
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op[0] = (a1 + b1 + 1) >> 1;
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op[4] = (c1 + d1) >> 1;
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op[8] = (a1 - b1) >> 1;
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op[12] = (d1 - c1) >> 1;
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ip++;
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op++;
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}
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ip = output;
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op = output;
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for (i = 0; i < 4; i++) {
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a1 = ip[0] + ip[3];
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b1 = ip[1] + ip[2];
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c1 = ip[1] - ip[2];
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d1 = ip[0] - ip[3];
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op[0] = ((a1 + b1 + 1) >> 1) << WHT_UPSCALE_FACTOR;
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op[1] = ((c1 + d1) >> 1) << WHT_UPSCALE_FACTOR;
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op[2] = ((a1 - b1) >> 1) << WHT_UPSCALE_FACTOR;
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op[3] = ((d1 - c1) >> 1) << WHT_UPSCALE_FACTOR;
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ip += 4;
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op += 4;
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}
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}
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void vp9_short_walsh8x4_c(short *input, short *output, int pitch) {
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vp9_short_walsh4x4_c(input, output, pitch);
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vp9_short_walsh4x4_c(input + 4, output + 16, pitch);
|
|
}
|
|
|
|
|
|
// Rewrote to use same algorithm as others.
|
|
static void fdct16_1d(int16_t input[16], int16_t output[16]) {
|
|
int16_t step[16];
|
|
int temp1, temp2;
|
|
|
|
// step 1
|
|
step[ 0] = input[0] + input[15];
|
|
step[ 1] = input[1] + input[14];
|
|
step[ 2] = input[2] + input[13];
|
|
step[ 3] = input[3] + input[12];
|
|
step[ 4] = input[4] + input[11];
|
|
step[ 5] = input[5] + input[10];
|
|
step[ 6] = input[6] + input[ 9];
|
|
step[ 7] = input[7] + input[ 8];
|
|
step[ 8] = input[7] - input[ 8];
|
|
step[ 9] = input[6] - input[ 9];
|
|
step[10] = input[5] - input[10];
|
|
step[11] = input[4] - input[11];
|
|
step[12] = input[3] - input[12];
|
|
step[13] = input[2] - input[13];
|
|
step[14] = input[1] - input[14];
|
|
step[15] = input[0] - input[15];
|
|
|
|
fdct8_1d(step, step);
|
|
|
|
// step 2
|
|
output[8] = step[8];
|
|
output[9] = step[9];
|
|
temp1 = (-step[10] + step[13]) * cospi_16_64;
|
|
temp2 = (-step[11] + step[12]) * cospi_16_64;
|
|
output[10] = dct_const_round_shift(temp1);
|
|
output[11] = dct_const_round_shift(temp2);
|
|
temp1 = (step[11] + step[12]) * cospi_16_64;
|
|
temp2 = (step[10] + step[13]) * cospi_16_64;
|
|
output[12] = dct_const_round_shift(temp1);
|
|
output[13] = dct_const_round_shift(temp2);
|
|
output[14] = step[14];
|
|
output[15] = step[15];
|
|
|
|
// step 3
|
|
step[ 8] = output[8] + output[11];
|
|
step[ 9] = output[9] + output[10];
|
|
step[ 10] = output[9] - output[10];
|
|
step[ 11] = output[8] - output[11];
|
|
step[ 12] = -output[12] + output[15];
|
|
step[ 13] = -output[13] + output[14];
|
|
step[ 14] = output[13] + output[14];
|
|
step[ 15] = output[12] + output[15];
|
|
|
|
// step 4
|
|
output[8] = step[8];
|
|
temp1 = -step[9] * cospi_8_64 + step[14] * cospi_24_64;
|
|
temp2 = -step[10] * cospi_24_64 - step[13] * cospi_8_64;
|
|
output[9] = dct_const_round_shift(temp1);
|
|
output[10] = dct_const_round_shift(temp2);
|
|
output[11] = step[11];
|
|
output[12] = step[12];
|
|
temp1 = -step[10] * cospi_8_64 + step[13] * cospi_24_64;
|
|
temp2 = step[9] * cospi_24_64 + step[14] * cospi_8_64;
|
|
output[13] = dct_const_round_shift(temp1);
|
|
output[14] = dct_const_round_shift(temp2);
|
|
output[15] = step[15];
|
|
|
|
// step 5
|
|
step[8] = output[8] + output[9];
|
|
step[9] = output[8] - output[9];
|
|
step[10] = -output[10] + output[11];
|
|
step[11] = output[10] + output[11];
|
|
step[12] = output[12] + output[13];
|
|
step[13] = output[12] - output[13];
|
|
step[14] = -output[14] + output[15];
|
|
step[15] = output[14] + output[15];
|
|
|
|
// step 6
|
|
output[0] = step[0];
|
|
output[8] = step[4];
|
|
output[4] = step[2];
|
|
output[12] = step[6];
|
|
output[2] = step[1];
|
|
output[10] = step[5];
|
|
output[6] = step[3];
|
|
output[14] = step[7];
|
|
|
|
temp1 = step[8] * cospi_30_64 + step[15] * cospi_2_64;
|
|
temp2 = step[9] * cospi_14_64 + step[14] * cospi_18_64;
|
|
output[1] = dct_const_round_shift(temp1);
|
|
output[9] = dct_const_round_shift(temp2);
|
|
|
|
temp1 = step[10] * cospi_22_64 + step[13] * cospi_10_64;
|
|
temp2 = step[11] * cospi_6_64 + step[12] * cospi_26_64;
|
|
output[5] = dct_const_round_shift(temp1);
|
|
output[13] = dct_const_round_shift(temp2);
|
|
|
|
temp1 = -step[11] * cospi_26_64 + step[12] * cospi_6_64;
|
|
temp2 = -step[10] * cospi_10_64 + step[13] * cospi_22_64;
|
|
output[3] = dct_const_round_shift(temp1);
|
|
output[11] = dct_const_round_shift(temp2);
|
|
|
|
temp1 = -step[9] * cospi_18_64 + step[14] * cospi_14_64;
|
|
temp2 = -step[8] * cospi_2_64 + step[15] * cospi_30_64;
|
|
output[7] = dct_const_round_shift(temp1);
|
|
output[15] = dct_const_round_shift(temp2);
|
|
}
|
|
|
|
void vp9_short_fdct16x16_c(int16_t *input, int16_t *out, int pitch) {
|
|
int shortpitch = pitch >> 1;
|
|
int i, j;
|
|
int16_t output[256];
|
|
int16_t temp_in[16], temp_out[16];
|
|
|
|
// First transform columns
|
|
for (i = 0; i < 16; i++) {
|
|
for (j = 0; j < 16; j++)
|
|
temp_in[j] = input[j * shortpitch + i] << 2;
|
|
fdct16_1d(temp_in, temp_out);
|
|
for (j = 0; j < 16; j++)
|
|
output[j * 16 + i] = (temp_out[j] + 1) >> 2;
|
|
}
|
|
|
|
// Then transform rows
|
|
for (i = 0; i < 16; ++i) {
|
|
for (j = 0; j < 16; ++j)
|
|
temp_in[j] = output[j + i * 16];
|
|
fdct16_1d(temp_in, temp_out);
|
|
for (j = 0; j < 16; ++j)
|
|
out[j + i * 16] = temp_out[j];
|
|
}
|
|
}
|
|
|
|
void fadst16_1d(int16_t *input, int16_t *output) {
|
|
int s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14, s15;
|
|
|
|
int x0 = input[15];
|
|
int x1 = input[0];
|
|
int x2 = input[13];
|
|
int x3 = input[2];
|
|
int x4 = input[11];
|
|
int x5 = input[4];
|
|
int x6 = input[9];
|
|
int x7 = input[6];
|
|
int x8 = input[7];
|
|
int x9 = input[8];
|
|
int x10 = input[5];
|
|
int x11 = input[10];
|
|
int x12 = input[3];
|
|
int x13 = input[12];
|
|
int x14 = input[1];
|
|
int x15 = input[14];
|
|
|
|
// stage 1
|
|
s0 = x0 * cospi_1_64 + x1 * cospi_31_64;
|
|
s1 = x0 * cospi_31_64 - x1 * cospi_1_64;
|
|
s2 = x2 * cospi_5_64 + x3 * cospi_27_64;
|
|
s3 = x2 * cospi_27_64 - x3 * cospi_5_64;
|
|
s4 = x4 * cospi_9_64 + x5 * cospi_23_64;
|
|
s5 = x4 * cospi_23_64 - x5 * cospi_9_64;
|
|
s6 = x6 * cospi_13_64 + x7 * cospi_19_64;
|
|
s7 = x6 * cospi_19_64 - x7 * cospi_13_64;
|
|
s8 = x8 * cospi_17_64 + x9 * cospi_15_64;
|
|
s9 = x8 * cospi_15_64 - x9 * cospi_17_64;
|
|
s10 = x10 * cospi_21_64 + x11 * cospi_11_64;
|
|
s11 = x10 * cospi_11_64 - x11 * cospi_21_64;
|
|
s12 = x12 * cospi_25_64 + x13 * cospi_7_64;
|
|
s13 = x12 * cospi_7_64 - x13 * cospi_25_64;
|
|
s14 = x14 * cospi_29_64 + x15 * cospi_3_64;
|
|
s15 = x14 * cospi_3_64 - x15 * cospi_29_64;
|
|
|
|
x0 = dct_const_round_shift(s0 + s8);
|
|
x1 = dct_const_round_shift(s1 + s9);
|
|
x2 = dct_const_round_shift(s2 + s10);
|
|
x3 = dct_const_round_shift(s3 + s11);
|
|
x4 = dct_const_round_shift(s4 + s12);
|
|
x5 = dct_const_round_shift(s5 + s13);
|
|
x6 = dct_const_round_shift(s6 + s14);
|
|
x7 = dct_const_round_shift(s7 + s15);
|
|
x8 = dct_const_round_shift(s0 - s8);
|
|
x9 = dct_const_round_shift(s1 - s9);
|
|
x10 = dct_const_round_shift(s2 - s10);
|
|
x11 = dct_const_round_shift(s3 - s11);
|
|
x12 = dct_const_round_shift(s4 - s12);
|
|
x13 = dct_const_round_shift(s5 - s13);
|
|
x14 = dct_const_round_shift(s6 - s14);
|
|
x15 = dct_const_round_shift(s7 - s15);
|
|
|
|
// stage 2
|
|
s0 = x0;
|
|
s1 = x1;
|
|
s2 = x2;
|
|
s3 = x3;
|
|
s4 = x4;
|
|
s5 = x5;
|
|
s6 = x6;
|
|
s7 = x7;
|
|
s8 = x8 * cospi_4_64 + x9 * cospi_28_64;
|
|
s9 = x8 * cospi_28_64 - x9 * cospi_4_64;
|
|
s10 = x10 * cospi_20_64 + x11 * cospi_12_64;
|
|
s11 = x10 * cospi_12_64 - x11 * cospi_20_64;
|
|
s12 = - x12 * cospi_28_64 + x13 * cospi_4_64;
|
|
s13 = x12 * cospi_4_64 + x13 * cospi_28_64;
|
|
s14 = - x14 * cospi_12_64 + x15 * cospi_20_64;
|
|
s15 = x14 * cospi_20_64 + x15 * cospi_12_64;
|
|
|
|
x0 = s0 + s4;
|
|
x1 = s1 + s5;
|
|
x2 = s2 + s6;
|
|
x3 = s3 + s7;
|
|
x4 = s0 - s4;
|
|
x5 = s1 - s5;
|
|
x6 = s2 - s6;
|
|
x7 = s3 - s7;
|
|
x8 = dct_const_round_shift(s8 + s12);
|
|
x9 = dct_const_round_shift(s9 + s13);
|
|
x10 = dct_const_round_shift(s10 + s14);
|
|
x11 = dct_const_round_shift(s11 + s15);
|
|
x12 = dct_const_round_shift(s8 - s12);
|
|
x13 = dct_const_round_shift(s9 - s13);
|
|
x14 = dct_const_round_shift(s10 - s14);
|
|
x15 = dct_const_round_shift(s11 - s15);
|
|
|
|
// stage 3
|
|
s0 = x0;
|
|
s1 = x1;
|
|
s2 = x2;
|
|
s3 = x3;
|
|
s4 = x4 * cospi_8_64 + x5 * cospi_24_64;
|
|
s5 = x4 * cospi_24_64 - x5 * cospi_8_64;
|
|
s6 = - x6 * cospi_24_64 + x7 * cospi_8_64;
|
|
s7 = x6 * cospi_8_64 + x7 * cospi_24_64;
|
|
s8 = x8;
|
|
s9 = x9;
|
|
s10 = x10;
|
|
s11 = x11;
|
|
s12 = x12 * cospi_8_64 + x13 * cospi_24_64;
|
|
s13 = x12 * cospi_24_64 - x13 * cospi_8_64;
|
|
s14 = - x14 * cospi_24_64 + x15 * cospi_8_64;
|
|
s15 = x14 * cospi_8_64 + x15 * cospi_24_64;
|
|
|
|
x0 = s0 + s2;
|
|
x1 = s1 + s3;
|
|
x2 = s0 - s2;
|
|
x3 = s1 - s3;
|
|
x4 = dct_const_round_shift(s4 + s6);
|
|
x5 = dct_const_round_shift(s5 + s7);
|
|
x6 = dct_const_round_shift(s4 - s6);
|
|
x7 = dct_const_round_shift(s5 - s7);
|
|
x8 = s8 + s10;
|
|
x9 = s9 + s11;
|
|
x10 = s8 - s10;
|
|
x11 = s9 - s11;
|
|
x12 = dct_const_round_shift(s12 + s14);
|
|
x13 = dct_const_round_shift(s13 + s15);
|
|
x14 = dct_const_round_shift(s12 - s14);
|
|
x15 = dct_const_round_shift(s13 - s15);
|
|
|
|
// stage 4
|
|
s2 = (- cospi_16_64) * (x2 + x3);
|
|
s3 = cospi_16_64 * (x2 - x3);
|
|
s6 = cospi_16_64 * (x6 + x7);
|
|
s7 = cospi_16_64 * (- x6 + x7);
|
|
s10 = cospi_16_64 * (x10 + x11);
|
|
s11 = cospi_16_64 * (- x10 + x11);
|
|
s14 = (- cospi_16_64) * (x14 + x15);
|
|
s15 = cospi_16_64 * (x14 - x15);
|
|
|
|
x2 = dct_const_round_shift(s2);
|
|
x3 = dct_const_round_shift(s3);
|
|
x6 = dct_const_round_shift(s6);
|
|
x7 = dct_const_round_shift(s7);
|
|
x10 = dct_const_round_shift(s10);
|
|
x11 = dct_const_round_shift(s11);
|
|
x14 = dct_const_round_shift(s14);
|
|
x15 = dct_const_round_shift(s15);
|
|
|
|
output[0] = x0;
|
|
output[1] = - x8;
|
|
output[2] = x12;
|
|
output[3] = - x4;
|
|
output[4] = x6;
|
|
output[5] = x14;
|
|
output[6] = x10;
|
|
output[7] = x2;
|
|
output[8] = x3;
|
|
output[9] = x11;
|
|
output[10] = x15;
|
|
output[11] = x7;
|
|
output[12] = x5;
|
|
output[13] = - x13;
|
|
output[14] = x9;
|
|
output[15] = - x1;
|
|
}
|
|
|
|
static const transform_2d FHT_16[] = {
|
|
{ fdct16_1d, fdct16_1d }, // DCT_DCT = 0
|
|
{ fadst16_1d, fdct16_1d }, // ADST_DCT = 1
|
|
{ fdct16_1d, fadst16_1d }, // DCT_ADST = 2
|
|
{ fadst16_1d, fadst16_1d } // ADST_ADST = 3
|
|
};
|
|
|
|
void vp9_short_fht16x16_c(int16_t *input, int16_t *output,
|
|
int pitch, TX_TYPE tx_type) {
|
|
int16_t out[256];
|
|
int16_t *outptr = &out[0];
|
|
int i, j;
|
|
int16_t temp_in[16], temp_out[16];
|
|
const transform_2d ht = FHT_16[tx_type];
|
|
|
|
// Columns
|
|
for (i = 0; i < 16; ++i) {
|
|
for (j = 0; j < 16; ++j)
|
|
temp_in[j] = input[j * pitch + i] << 2;
|
|
ht.cols(temp_in, temp_out);
|
|
for (j = 0; j < 16; ++j)
|
|
outptr[j * 16 + i] = (temp_out[j] + 1 + (temp_out[j] > 0)) >> 2;
|
|
}
|
|
|
|
// Rows
|
|
for (i = 0; i < 16; ++i) {
|
|
for (j = 0; j < 16; ++j)
|
|
temp_in[j] = out[j + i * 16];
|
|
ht.rows(temp_in, temp_out);
|
|
for (j = 0; j < 16; ++j)
|
|
output[j + i * 16] = temp_out[j];
|
|
}
|
|
}
|
|
|
|
|
|
static void dct32_1d(int *input, int *output) {
|
|
int step[32];
|
|
// Stage 1
|
|
step[0] = input[0] + input[(32 - 1)];
|
|
step[1] = input[1] + input[(32 - 2)];
|
|
step[2] = input[2] + input[(32 - 3)];
|
|
step[3] = input[3] + input[(32 - 4)];
|
|
step[4] = input[4] + input[(32 - 5)];
|
|
step[5] = input[5] + input[(32 - 6)];
|
|
step[6] = input[6] + input[(32 - 7)];
|
|
step[7] = input[7] + input[(32 - 8)];
|
|
step[8] = input[8] + input[(32 - 9)];
|
|
step[9] = input[9] + input[(32 - 10)];
|
|
step[10] = input[10] + input[(32 - 11)];
|
|
step[11] = input[11] + input[(32 - 12)];
|
|
step[12] = input[12] + input[(32 - 13)];
|
|
step[13] = input[13] + input[(32 - 14)];
|
|
step[14] = input[14] + input[(32 - 15)];
|
|
step[15] = input[15] + input[(32 - 16)];
|
|
step[16] = -input[16] + input[(32 - 17)];
|
|
step[17] = -input[17] + input[(32 - 18)];
|
|
step[18] = -input[18] + input[(32 - 19)];
|
|
step[19] = -input[19] + input[(32 - 20)];
|
|
step[20] = -input[20] + input[(32 - 21)];
|
|
step[21] = -input[21] + input[(32 - 22)];
|
|
step[22] = -input[22] + input[(32 - 23)];
|
|
step[23] = -input[23] + input[(32 - 24)];
|
|
step[24] = -input[24] + input[(32 - 25)];
|
|
step[25] = -input[25] + input[(32 - 26)];
|
|
step[26] = -input[26] + input[(32 - 27)];
|
|
step[27] = -input[27] + input[(32 - 28)];
|
|
step[28] = -input[28] + input[(32 - 29)];
|
|
step[29] = -input[29] + input[(32 - 30)];
|
|
step[30] = -input[30] + input[(32 - 31)];
|
|
step[31] = -input[31] + input[(32 - 32)];
|
|
|
|
// Stage 2
|
|
output[0] = step[0] + step[16 - 1];
|
|
output[1] = step[1] + step[16 - 2];
|
|
output[2] = step[2] + step[16 - 3];
|
|
output[3] = step[3] + step[16 - 4];
|
|
output[4] = step[4] + step[16 - 5];
|
|
output[5] = step[5] + step[16 - 6];
|
|
output[6] = step[6] + step[16 - 7];
|
|
output[7] = step[7] + step[16 - 8];
|
|
output[8] = -step[8] + step[16 - 9];
|
|
output[9] = -step[9] + step[16 - 10];
|
|
output[10] = -step[10] + step[16 - 11];
|
|
output[11] = -step[11] + step[16 - 12];
|
|
output[12] = -step[12] + step[16 - 13];
|
|
output[13] = -step[13] + step[16 - 14];
|
|
output[14] = -step[14] + step[16 - 15];
|
|
output[15] = -step[15] + step[16 - 16];
|
|
|
|
output[16] = step[16];
|
|
output[17] = step[17];
|
|
output[18] = step[18];
|
|
output[19] = step[19];
|
|
|
|
output[20] = dct_32_round((-step[20] + step[27]) * cospi_16_64);
|
|
output[21] = dct_32_round((-step[21] + step[26]) * cospi_16_64);
|
|
output[22] = dct_32_round((-step[22] + step[25]) * cospi_16_64);
|
|
output[23] = dct_32_round((-step[23] + step[24]) * cospi_16_64);
|
|
|
|
output[24] = dct_32_round((step[24] + step[23]) * cospi_16_64);
|
|
output[25] = dct_32_round((step[25] + step[22]) * cospi_16_64);
|
|
output[26] = dct_32_round((step[26] + step[21]) * cospi_16_64);
|
|
output[27] = dct_32_round((step[27] + step[20]) * cospi_16_64);
|
|
|
|
output[28] = step[28];
|
|
output[29] = step[29];
|
|
output[30] = step[30];
|
|
output[31] = step[31];
|
|
|
|
// Stage 3
|
|
step[0] = output[0] + output[(8 - 1)];
|
|
step[1] = output[1] + output[(8 - 2)];
|
|
step[2] = output[2] + output[(8 - 3)];
|
|
step[3] = output[3] + output[(8 - 4)];
|
|
step[4] = -output[4] + output[(8 - 5)];
|
|
step[5] = -output[5] + output[(8 - 6)];
|
|
step[6] = -output[6] + output[(8 - 7)];
|
|
step[7] = -output[7] + output[(8 - 8)];
|
|
step[8] = output[8];
|
|
step[9] = output[9];
|
|
step[10] = dct_32_round((-output[10] + output[13]) * cospi_16_64);
|
|
step[11] = dct_32_round((-output[11] + output[12]) * cospi_16_64);
|
|
step[12] = dct_32_round((output[12] + output[11]) * cospi_16_64);
|
|
step[13] = dct_32_round((output[13] + output[10]) * cospi_16_64);
|
|
step[14] = output[14];
|
|
step[15] = output[15];
|
|
|
|
step[16] = output[16] + output[23];
|
|
step[17] = output[17] + output[22];
|
|
step[18] = output[18] + output[21];
|
|
step[19] = output[19] + output[20];
|
|
step[20] = -output[20] + output[19];
|
|
step[21] = -output[21] + output[18];
|
|
step[22] = -output[22] + output[17];
|
|
step[23] = -output[23] + output[16];
|
|
step[24] = -output[24] + output[31];
|
|
step[25] = -output[25] + output[30];
|
|
step[26] = -output[26] + output[29];
|
|
step[27] = -output[27] + output[28];
|
|
step[28] = output[28] + output[27];
|
|
step[29] = output[29] + output[26];
|
|
step[30] = output[30] + output[25];
|
|
step[31] = output[31] + output[24];
|
|
|
|
// Stage 4
|
|
output[0] = step[0] + step[3];
|
|
output[1] = step[1] + step[2];
|
|
output[2] = -step[2] + step[1];
|
|
output[3] = -step[3] + step[0];
|
|
output[4] = step[4];
|
|
output[5] = dct_32_round((-step[5] + step[6]) * cospi_16_64);
|
|
output[6] = dct_32_round((step[6] + step[5]) * cospi_16_64);
|
|
output[7] = step[7];
|
|
output[8] = step[8] + step[11];
|
|
output[9] = step[9] + step[10];
|
|
output[10] = -step[10] + step[9];
|
|
output[11] = -step[11] + step[8];
|
|
output[12] = -step[12] + step[15];
|
|
output[13] = -step[13] + step[14];
|
|
output[14] = step[14] + step[13];
|
|
output[15] = step[15] + step[12];
|
|
|
|
output[16] = step[16];
|
|
output[17] = step[17];
|
|
output[18] = dct_32_round(step[18] * -cospi_8_64 + step[29] * cospi_24_64);
|
|
output[19] = dct_32_round(step[19] * -cospi_8_64 + step[28] * cospi_24_64);
|
|
output[20] = dct_32_round(step[20] * -cospi_24_64 + step[27] * -cospi_8_64);
|
|
output[21] = dct_32_round(step[21] * -cospi_24_64 + step[26] * -cospi_8_64);
|
|
output[22] = step[22];
|
|
output[23] = step[23];
|
|
output[24] = step[24];
|
|
output[25] = step[25];
|
|
output[26] = dct_32_round(step[26] * cospi_24_64 + step[21] * -cospi_8_64);
|
|
output[27] = dct_32_round(step[27] * cospi_24_64 + step[20] * -cospi_8_64);
|
|
output[28] = dct_32_round(step[28] * cospi_8_64 + step[19] * cospi_24_64);
|
|
output[29] = dct_32_round(step[29] * cospi_8_64 + step[18] * cospi_24_64);
|
|
output[30] = step[30];
|
|
output[31] = step[31];
|
|
|
|
// Stage 5
|
|
step[0] = dct_32_round((output[0] + output[1]) * cospi_16_64);
|
|
step[1] = dct_32_round((-output[1] + output[0]) * cospi_16_64);
|
|
step[2] = dct_32_round(output[2] * cospi_24_64 + output[3] * cospi_8_64);
|
|
step[3] = dct_32_round(output[3] * cospi_24_64 - output[2] * cospi_8_64);
|
|
step[4] = output[4] + output[5];
|
|
step[5] = -output[5] + output[4];
|
|
step[6] = -output[6] + output[7];
|
|
step[7] = output[7] + output[6];
|
|
step[8] = output[8];
|
|
step[9] = dct_32_round(output[9] * -cospi_8_64 + output[14] * cospi_24_64);
|
|
step[10] = dct_32_round(output[10] * -cospi_24_64 + output[13] * -cospi_8_64);
|
|
step[11] = output[11];
|
|
step[12] = output[12];
|
|
step[13] = dct_32_round(output[13] * cospi_24_64 + output[10] * -cospi_8_64);
|
|
step[14] = dct_32_round(output[14] * cospi_8_64 + output[9] * cospi_24_64);
|
|
step[15] = output[15];
|
|
|
|
step[16] = output[16] + output[19];
|
|
step[17] = output[17] + output[18];
|
|
step[18] = -output[18] + output[17];
|
|
step[19] = -output[19] + output[16];
|
|
step[20] = -output[20] + output[23];
|
|
step[21] = -output[21] + output[22];
|
|
step[22] = output[22] + output[21];
|
|
step[23] = output[23] + output[20];
|
|
step[24] = output[24] + output[27];
|
|
step[25] = output[25] + output[26];
|
|
step[26] = -output[26] + output[25];
|
|
step[27] = -output[27] + output[24];
|
|
step[28] = -output[28] + output[31];
|
|
step[29] = -output[29] + output[30];
|
|
step[30] = output[30] + output[29];
|
|
step[31] = output[31] + output[28];
|
|
|
|
// Stage 6
|
|
output[0] = step[0];
|
|
output[1] = step[1];
|
|
output[2] = step[2];
|
|
output[3] = step[3];
|
|
output[4] = dct_32_round(step[4] * cospi_28_64 + step[7] * cospi_4_64);
|
|
output[5] = dct_32_round(step[5] * cospi_12_64 + step[6] * cospi_20_64);
|
|
output[6] = dct_32_round(step[6] * cospi_12_64 + step[5] * -cospi_20_64);
|
|
output[7] = dct_32_round(step[7] * cospi_28_64 + step[4] * -cospi_4_64);
|
|
output[8] = step[8] + step[9];
|
|
output[9] = -step[9] + step[8];
|
|
output[10] = -step[10] + step[11];
|
|
output[11] = step[11] + step[10];
|
|
output[12] = step[12] + step[13];
|
|
output[13] = -step[13] + step[12];
|
|
output[14] = -step[14] + step[15];
|
|
output[15] = step[15] + step[14];
|
|
|
|
output[16] = step[16];
|
|
output[17] = dct_32_round(step[17] * -cospi_4_64 + step[30] * cospi_28_64);
|
|
output[18] = dct_32_round(step[18] * -cospi_28_64 + step[29] * -cospi_4_64);
|
|
output[19] = step[19];
|
|
output[20] = step[20];
|
|
output[21] = dct_32_round(step[21] * -cospi_20_64 + step[26] * cospi_12_64);
|
|
output[22] = dct_32_round(step[22] * -cospi_12_64 + step[25] * -cospi_20_64);
|
|
output[23] = step[23];
|
|
output[24] = step[24];
|
|
output[25] = dct_32_round(step[25] * cospi_12_64 + step[22] * -cospi_20_64);
|
|
output[26] = dct_32_round(step[26] * cospi_20_64 + step[21] * cospi_12_64);
|
|
output[27] = step[27];
|
|
output[28] = step[28];
|
|
output[29] = dct_32_round(step[29] * cospi_28_64 + step[18] * -cospi_4_64);
|
|
output[30] = dct_32_round(step[30] * cospi_4_64 + step[17] * cospi_28_64);
|
|
output[31] = step[31];
|
|
|
|
// Stage 7
|
|
step[0] = output[0];
|
|
step[1] = output[1];
|
|
step[2] = output[2];
|
|
step[3] = output[3];
|
|
step[4] = output[4];
|
|
step[5] = output[5];
|
|
step[6] = output[6];
|
|
step[7] = output[7];
|
|
step[8] = dct_32_round(output[8] * cospi_30_64 + output[15] * cospi_2_64);
|
|
step[9] = dct_32_round(output[9] * cospi_14_64 + output[14] * cospi_18_64);
|
|
step[10] = dct_32_round(output[10] * cospi_22_64 + output[13] * cospi_10_64);
|
|
step[11] = dct_32_round(output[11] * cospi_6_64 + output[12] * cospi_26_64);
|
|
step[12] = dct_32_round(output[12] * cospi_6_64 + output[11] * -cospi_26_64);
|
|
step[13] = dct_32_round(output[13] * cospi_22_64 + output[10] * -cospi_10_64);
|
|
step[14] = dct_32_round(output[14] * cospi_14_64 + output[9] * -cospi_18_64);
|
|
step[15] = dct_32_round(output[15] * cospi_30_64 + output[8] * -cospi_2_64);
|
|
|
|
step[16] = output[16] + output[17];
|
|
step[17] = -output[17] + output[16];
|
|
step[18] = -output[18] + output[19];
|
|
step[19] = output[19] + output[18];
|
|
step[20] = output[20] + output[21];
|
|
step[21] = -output[21] + output[20];
|
|
step[22] = -output[22] + output[23];
|
|
step[23] = output[23] + output[22];
|
|
step[24] = output[24] + output[25];
|
|
step[25] = -output[25] + output[24];
|
|
step[26] = -output[26] + output[27];
|
|
step[27] = output[27] + output[26];
|
|
step[28] = output[28] + output[29];
|
|
step[29] = -output[29] + output[28];
|
|
step[30] = -output[30] + output[31];
|
|
step[31] = output[31] + output[30];
|
|
|
|
// Final stage --- outputs indices are bit-reversed.
|
|
output[0] = step[0];
|
|
output[16] = step[1];
|
|
output[8] = step[2];
|
|
output[24] = step[3];
|
|
output[4] = step[4];
|
|
output[20] = step[5];
|
|
output[12] = step[6];
|
|
output[28] = step[7];
|
|
output[2] = step[8];
|
|
output[18] = step[9];
|
|
output[10] = step[10];
|
|
output[26] = step[11];
|
|
output[6] = step[12];
|
|
output[22] = step[13];
|
|
output[14] = step[14];
|
|
output[30] = step[15];
|
|
|
|
output[1] = dct_32_round(step[16] * cospi_31_64 + step[31] * cospi_1_64);
|
|
output[17] = dct_32_round(step[17] * cospi_15_64 + step[30] * cospi_17_64);
|
|
output[9] = dct_32_round(step[18] * cospi_23_64 + step[29] * cospi_9_64);
|
|
output[25] = dct_32_round(step[19] * cospi_7_64 + step[28] * cospi_25_64);
|
|
output[5] = dct_32_round(step[20] * cospi_27_64 + step[27] * cospi_5_64);
|
|
output[21] = dct_32_round(step[21] * cospi_11_64 + step[26] * cospi_21_64);
|
|
output[13] = dct_32_round(step[22] * cospi_19_64 + step[25] * cospi_13_64);
|
|
output[29] = dct_32_round(step[23] * cospi_3_64 + step[24] * cospi_29_64);
|
|
output[3] = dct_32_round(step[24] * cospi_3_64 + step[23] * -cospi_29_64);
|
|
output[19] = dct_32_round(step[25] * cospi_19_64 + step[22] * -cospi_13_64);
|
|
output[11] = dct_32_round(step[26] * cospi_11_64 + step[21] * -cospi_21_64);
|
|
output[27] = dct_32_round(step[27] * cospi_27_64 + step[20] * -cospi_5_64);
|
|
output[7] = dct_32_round(step[28] * cospi_7_64 + step[19] * -cospi_25_64);
|
|
output[23] = dct_32_round(step[29] * cospi_23_64 + step[18] * -cospi_9_64);
|
|
output[15] = dct_32_round(step[30] * cospi_15_64 + step[17] * -cospi_17_64);
|
|
output[31] = dct_32_round(step[31] * cospi_31_64 + step[16] * -cospi_1_64);
|
|
}
|
|
|
|
void vp9_short_fdct32x32_c(int16_t *input, int16_t *out, int pitch) {
|
|
int shortpitch = pitch >> 1;
|
|
int i, j;
|
|
int output[32 * 32];
|
|
|
|
// Columns
|
|
for (i = 0; i < 32; i++) {
|
|
int temp_in[32], temp_out[32];
|
|
for (j = 0; j < 32; j++)
|
|
temp_in[j] = input[j * shortpitch + i] << 2;
|
|
dct32_1d(temp_in, temp_out);
|
|
for (j = 0; j < 32; j++)
|
|
output[j * 32 + i] = (temp_out[j] + 1 + (temp_out[j] > 0)) >> 2;
|
|
}
|
|
|
|
// Rows
|
|
for (i = 0; i < 32; ++i) {
|
|
int temp_in[32], temp_out[32];
|
|
for (j = 0; j < 32; ++j)
|
|
temp_in[j] = output[j + i * 32];
|
|
dct32_1d(temp_in, temp_out);
|
|
for (j = 0; j < 32; ++j)
|
|
out[j + i * 32] = (temp_out[j] + 1 + (temp_out[j] < 0)) >> 2;
|
|
}
|
|
}
|
|
|