ref: bcaba2e5cb194bbf2b7cc1b72834e1439fcbae60
dir: /vp8/decoder/dequantize.c/
/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "vpx_ports/config.h"
#include "dequantize.h"
#include "vp8/common/idct.h"
#include "vpx_mem/vpx_mem.h"
#include "onyxd_int.h"
extern void vp8_short_idct4x4llm_c(short *input, short *output, int pitch);
extern void vp8_short_idct4x4llm_1_c(short *input, short *output, int pitch);
extern void vp8_short_idct8x8_c(short *input, short *output, int pitch);
extern void vp8_short_idct8x8_1_c(short *input, short *output, int pitch);
#if CONFIG_LOSSLESS
extern void vp8_short_inv_walsh4x4_x8_c(short *input, short *output, int pitch);
extern void vp8_short_inv_walsh4x4_1_x8_c(short *input, short *output, int pitch);
#endif
#ifdef DEC_DEBUG
extern int dec_debug;
#endif
void vp8_dequantize_b_c(BLOCKD *d) {
int i;
short *DQ = d->dqcoeff;
short *Q = d->qcoeff;
short *DQC = d->dequant;
for (i = 0; i < 16; i++) {
DQ[i] = Q[i] * DQC[i];
}
}
#if CONFIG_HYBRIDTRANSFORM
void vp8_ht_dequant_idct_add_c(TX_TYPE tx_type, short *input, short *dq,
unsigned char *pred, unsigned char *dest,
int pitch, int stride) {
short output[16];
short *diff_ptr = output;
int r, c;
int i;
for (i = 0; i < 16; i++) {
input[i] = dq[i] * input[i];
}
vp8_ihtllm_c(input, output, 4 << 1, tx_type, 4);
vpx_memset(input, 0, 32);
for (r = 0; r < 4; r++) {
for (c = 0; c < 4; c++) {
int a = diff_ptr[c] + pred[c];
if (a < 0)
a = 0;
if (a > 255)
a = 255;
dest[c] = (unsigned char) a;
}
dest += stride;
diff_ptr += 4;
pred += pitch;
}
}
#endif
#if CONFIG_HYBRIDTRANSFORM8X8
void vp8_ht_dequant_idct_add_8x8_c(TX_TYPE tx_type, short *input, short *dq,
unsigned char *pred, unsigned char *dest,
int pitch, int stride) {
short output[64];
short *diff_ptr = output;
int b, r, c;
int i;
unsigned char *origdest = dest;
unsigned char *origpred = pred;
input[0] = dq[0] * input[0];
for (i = 1; i < 64; i++) {
input[i] = dq[1] * input[i];
}
vp8_ihtllm_c(input, output, 16, tx_type, 8);
vpx_memset(input, 0, 128);
for (b = 0; b < 4; b++) {
for (r = 0; r < 4; r++) {
for (c = 0; c < 4; c++) {
int a = diff_ptr[c] + pred[c];
if (a < 0)
a = 0;
if (a > 255)
a = 255;
dest[c] = (unsigned char) a;
}
dest += stride;
diff_ptr += 8;
pred += pitch;
}
// shift buffer pointers to next 4x4 block in the submacroblock
diff_ptr = output + (b + 1) / 2 * 4 * 8 + ((b + 1) % 2) * 4;
dest = origdest + (b + 1) / 2 * 4 * stride + ((b + 1) % 2) * 4;
pred = origpred + (b + 1) / 2 * 4 * pitch + ((b + 1) % 2) * 4;
}
}
#endif
void vp8_dequant_idct_add_c(short *input, short *dq, unsigned char *pred,
unsigned char *dest, int pitch, int stride) {
short output[16];
short *diff_ptr = output;
int r, c;
int i;
for (i = 0; i < 16; i++) {
input[i] = dq[i] * input[i];
}
/* the idct halves ( >> 1) the pitch */
vp8_short_idct4x4llm_c(input, output, 4 << 1);
vpx_memset(input, 0, 32);
for (r = 0; r < 4; r++) {
for (c = 0; c < 4; c++) {
int a = diff_ptr[c] + pred[c];
if (a < 0)
a = 0;
if (a > 255)
a = 255;
dest[c] = (unsigned char) a;
}
dest += stride;
diff_ptr += 4;
pred += pitch;
}
}
void vp8_dequant_dc_idct_add_c(short *input, short *dq, unsigned char *pred,
unsigned char *dest, int pitch, int stride,
int Dc) {
int i;
short output[16];
short *diff_ptr = output;
int r, c;
input[0] = (short)Dc;
for (i = 1; i < 16; i++) {
input[i] = dq[i] * input[i];
}
/* the idct halves ( >> 1) the pitch */
vp8_short_idct4x4llm_c(input, output, 4 << 1);
vpx_memset(input, 0, 32);
for (r = 0; r < 4; r++) {
for (c = 0; c < 4; c++) {
int a = diff_ptr[c] + pred[c];
if (a < 0)
a = 0;
if (a > 255)
a = 255;
dest[c] = (unsigned char) a;
}
dest += stride;
diff_ptr += 4;
pred += pitch;
}
}
#if CONFIG_LOSSLESS
void vp8_dequant_idct_add_lossless_c(short *input, short *dq, unsigned char *pred,
unsigned char *dest, int pitch, int stride) {
short output[16];
short *diff_ptr = output;
int r, c;
int i;
for (i = 0; i < 16; i++) {
input[i] = dq[i] * input[i];
}
vp8_short_inv_walsh4x4_x8_c(input, output, 4 << 1);
vpx_memset(input, 0, 32);
for (r = 0; r < 4; r++) {
for (c = 0; c < 4; c++) {
int a = diff_ptr[c] + pred[c];
if (a < 0)
a = 0;
if (a > 255)
a = 255;
dest[c] = (unsigned char) a;
}
dest += stride;
diff_ptr += 4;
pred += pitch;
}
}
void vp8_dequant_dc_idct_add_lossless_c(short *input, short *dq, unsigned char *pred,
unsigned char *dest, int pitch, int stride,
int Dc) {
int i;
short output[16];
short *diff_ptr = output;
int r, c;
input[0] = (short)Dc;
for (i = 1; i < 16; i++) {
input[i] = dq[i] * input[i];
}
vp8_short_inv_walsh4x4_x8_c(input, output, 4 << 1);
vpx_memset(input, 0, 32);
for (r = 0; r < 4; r++) {
for (c = 0; c < 4; c++) {
int a = diff_ptr[c] + pred[c];
if (a < 0)
a = 0;
if (a > 255)
a = 255;
dest[c] = (unsigned char) a;
}
dest += stride;
diff_ptr += 4;
pred += pitch;
}
}
#endif
void vp8_dequantize_b_2x2_c(BLOCKD *d) {
int i;
short *DQ = d->dqcoeff;
short *Q = d->qcoeff;
short *DQC = d->dequant;
for (i = 0; i < 16; i++) {
DQ[i] = (short)((Q[i] * DQC[i]));
}
#ifdef DEC_DEBUG
if (dec_debug) {
int j;
printf("Dequantize 2x2\n");
for (j = 0; j < 16; j++) printf("%d ", Q[j]);
printf("\n");
for (j = 0; j < 16; j++) printf("%d ", DQ[j]);
printf("\n");
}
#endif
}
void vp8_dequant_idct_add_8x8_c(short *input, short *dq, unsigned char *pred,
unsigned char *dest, int pitch, int stride) { // , MACROBLOCKD *xd, short blk_idx
short output[64];
short *diff_ptr = output;
int r, c, b;
int i;
unsigned char *origdest = dest;
unsigned char *origpred = pred;
#ifdef DEC_DEBUG
if (dec_debug) {
int j;
printf("Input 8x8\n");
for (j = 0; j < 64; j++) {
printf("%d ", input[j]);
if (j % 8 == 7) printf("\n");
}
}
#endif
input[0] = input[0] * dq[0];
// recover quantizer for 4 4x4 blocks
for (i = 1; i < 64; i++) {
input[i] = input[i] * dq[1];
}
#ifdef DEC_DEBUG
if (dec_debug) {
int j;
printf("Input DQ 8x8\n");
for (j = 0; j < 64; j++) {
printf("%d ", input[j]);
if (j % 8 == 7) printf("\n");
}
}
#endif
// the idct halves ( >> 1) the pitch
vp8_short_idct8x8_c(input, output, 16);
#ifdef DEC_DEBUG
if (dec_debug) {
int j;
printf("Output 8x8\n");
for (j = 0; j < 64; j++) {
printf("%d ", output[j]);
if (j % 8 == 7) printf("\n");
}
}
#endif
vpx_memset(input, 0, 128);// test what should i put here
for (b = 0; b < 4; b++) {
for (r = 0; r < 4; r++) {
for (c = 0; c < 4; c++) {
int a = diff_ptr[c] + pred[c];
if (a < 0)
a = 0;
if (a > 255)
a = 255;
dest[c] = (unsigned char) a;
}
dest += stride;
diff_ptr += 8;
pred += pitch;
}
diff_ptr = output + (b + 1) / 2 * 4 * 8 + (b + 1) % 2 * 4;
dest = origdest + (b + 1) / 2 * 4 * stride + (b + 1) % 2 * 4;
pred = origpred + (b + 1) / 2 * 4 * pitch + (b + 1) % 2 * 4;
}
#ifdef DEC_DEBUG
if (dec_debug) {
int k, j;
printf("Final 8x8\n");
for (j = 0; j < 8; j++) {
for (k = 0; k < 8; k++) {
printf("%d ", origdest[k]);
}
printf("\n");
origdest += stride;
}
}
#endif
}
void vp8_dequant_dc_idct_add_8x8_c(short *input, short *dq, unsigned char *pred,
unsigned char *dest, int pitch, int stride,
int Dc) { // Dc for 1st order T in some rear case
short output[64];
short *diff_ptr = output;
int r, c, b;
int i;
unsigned char *origdest = dest;
unsigned char *origpred = pred;
input[0] = (short)Dc;// Dc is the reconstructed value, do not need dequantization
// dc value is recovered after dequantization, since dc need not quantization
#ifdef DEC_DEBUG
if (dec_debug) {
int j;
printf("Input 8x8\n");
for (j = 0; j < 64; j++) {
printf("%d ", input[j]);
if (j % 8 == 7) printf("\n");
}
}
#endif
for (i = 1; i < 64; i++) {
input[i] = input[i] * dq[1];
}
#ifdef DEC_DEBUG
if (dec_debug) {
int j;
printf("Input DQ 8x8\n");
for (j = 0; j < 64; j++) {
printf("%d ", input[j]);
if (j % 8 == 7) printf("\n");
}
}
#endif
// the idct halves ( >> 1) the pitch
vp8_short_idct8x8_c(input, output, 16);
#ifdef DEC_DEBUG
if (dec_debug) {
int j;
printf("Output 8x8\n");
for (j = 0; j < 64; j++) {
printf("%d ", output[j]);
if (j % 8 == 7) printf("\n");
}
}
#endif
vpx_memset(input, 0, 128);
for (b = 0; b < 4; b++) {
for (r = 0; r < 4; r++) {
for (c = 0; c < 4; c++) {
int a = diff_ptr[c] + pred[c];
if (a < 0)
a = 0;
if (a > 255)
a = 255;
dest[c] = (unsigned char) a;
}
dest += stride;
diff_ptr += 8;
pred += pitch;
}
diff_ptr = output + (b + 1) / 2 * 4 * 8 + (b + 1) % 2 * 4;
dest = origdest + (b + 1) / 2 * 4 * stride + (b + 1) % 2 * 4;
pred = origpred + (b + 1) / 2 * 4 * pitch + (b + 1) % 2 * 4;
}
#ifdef DEC_DEBUG
if (dec_debug) {
int k, j;
printf("Final 8x8\n");
for (j = 0; j < 8; j++) {
for (k = 0; k < 8; k++) {
printf("%d ", origdest[k]);
}
printf("\n");
origdest += stride;
}
}
#endif
}
#if CONFIG_HYBRIDTRANSFORM16X16
void vp8_ht_dequant_idct_add_16x16_c(TX_TYPE tx_type, short *input, short *dq,
unsigned char *pred, unsigned char *dest,
int pitch, int stride) {
short output[256];
short *diff_ptr = output;
int r, c, i;
input[0]= input[0] * dq[0];
// recover quantizer for 4 4x4 blocks
for (i = 1; i < 256; i++)
input[i] = input[i] * dq[1];
// inverse hybrid transform
vp8_ihtllm_c(input, output, 32, tx_type, 16);
// the idct halves ( >> 1) the pitch
// vp8_short_idct16x16_c(input, output, 32);
vpx_memset(input, 0, 512);
for (r = 0; r < 16; r++) {
for (c = 0; c < 16; c++) {
int a = diff_ptr[c] + pred[c];
if (a < 0)
a = 0;
else if (a > 255)
a = 255;
dest[c] = (unsigned char) a;
}
dest += stride;
diff_ptr += 16;
pred += pitch;
}
}
#endif
void vp8_dequant_idct_add_16x16_c(short *input, short *dq, unsigned char *pred,
unsigned char *dest, int pitch, int stride) {
short output[256];
short *diff_ptr = output;
int r, c, i;
input[0]= input[0] * dq[0];
// recover quantizer for 4 4x4 blocks
for (i = 1; i < 256; i++)
input[i] = input[i] * dq[1];
// the idct halves ( >> 1) the pitch
vp8_short_idct16x16_c(input, output, 32);
vpx_memset(input, 0, 512);
for (r = 0; r < 16; r++) {
for (c = 0; c < 16; c++) {
int a = diff_ptr[c] + pred[c];
if (a < 0)
a = 0;
else if (a > 255)
a = 255;
dest[c] = (unsigned char) a;
}
dest += stride;
diff_ptr += 16;
pred += pitch;
}
}