330 lines
7.3 KiB
C
330 lines
7.3 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 "vpx_ports/config.h"
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#include "dequantize.h"
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#include "vp8/common/idct.h"
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#include "vpx_mem/vpx_mem.h"
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#include "onyxd_int.h"
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extern void vp8_short_idct4x4llm_c(short *input, short *output, int pitch) ;
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extern void vp8_short_idct4x4llm_1_c(short *input, short *output, int pitch);
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extern void vp8_short_idct8x8_c(short *input, short *output, int pitch);
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extern void vp8_short_idct8x8_1_c(short *input, short *output, int pitch);
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#ifdef DEC_DEBUG
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extern int dec_debug;
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#endif
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void vp8_dequantize_b_c(BLOCKD *d)
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{
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int i;
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short *DQ = d->dqcoeff;
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short *Q = d->qcoeff;
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short *DQC = d->dequant;
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for (i = 0; i < 16; i++)
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{
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DQ[i] = Q[i] * DQC[i];
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}
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}
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void vp8_dequant_idct_add_c(short *input, short *dq, unsigned char *pred,
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unsigned char *dest, int pitch, int stride)
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{
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short output[16];
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short *diff_ptr = output;
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int r, c;
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int i;
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for (i = 0; i < 16; i++)
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{
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input[i] = dq[i] * input[i];
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}
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/* the idct halves ( >> 1) the pitch */
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vp8_short_idct4x4llm_c(input, output, 4 << 1);
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vpx_memset(input, 0, 32);
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for (r = 0; r < 4; r++)
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{
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for (c = 0; c < 4; c++)
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{
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int a = diff_ptr[c] + pred[c];
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if (a < 0)
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a = 0;
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if (a > 255)
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a = 255;
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dest[c] = (unsigned char) a;
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}
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dest += stride;
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diff_ptr += 4;
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pred += pitch;
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}
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}
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void vp8_dequant_dc_idct_add_c(short *input, short *dq, unsigned char *pred,
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unsigned char *dest, int pitch, int stride,
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int Dc)
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{
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int i;
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short output[16];
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short *diff_ptr = output;
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int r, c;
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input[0] = (short)Dc;
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for (i = 1; i < 16; i++)
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{
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input[i] = dq[i] * input[i];
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}
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/* the idct halves ( >> 1) the pitch */
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vp8_short_idct4x4llm_c(input, output, 4 << 1);
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vpx_memset(input, 0, 32);
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for (r = 0; r < 4; r++)
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{
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for (c = 0; c < 4; c++)
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{
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int a = diff_ptr[c] + pred[c];
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if (a < 0)
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a = 0;
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if (a > 255)
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a = 255;
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dest[c] = (unsigned char) a;
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}
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dest += stride;
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diff_ptr += 4;
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pred += pitch;
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}
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}
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void vp8_dequantize_b_2x2_c(BLOCKD *d)
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{
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int i;
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short *DQ = d->dqcoeff;
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short *Q = d->qcoeff;
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short *DQC = d->dequant;
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for (i = 0; i < 16; i++)
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{
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DQ[i] = (short)((Q[i] * DQC[i]));
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}
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#ifdef DEC_DEBUG
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if (dec_debug) {
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int j;
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printf("Dequantize 2x2\n");
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for (j=0;j<16;j++) printf("%d ", Q[j]); printf("\n");
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for (j=0;j<16;j++) printf("%d ", DQ[j]); printf("\n");
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}
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#endif
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}
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void vp8_dequant_idct_add_8x8_c(short *input, short *dq, unsigned char *pred,
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unsigned char *dest, int pitch, int stride)//, MACROBLOCKD *xd, short blk_idx
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{
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short output[64];
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short *diff_ptr = output;
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int r, c, b;
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int i;
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unsigned char *origdest = dest;
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unsigned char *origpred = pred;
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#ifdef DEC_DEBUG
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if (dec_debug) {
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int j;
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printf("Input 8x8\n");
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for (j=0;j<64;j++) {
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printf("%d ", input[j]);
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if (j%8 == 7) printf("\n");
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}
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}
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#endif
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input[0]= input[0] * dq[0];
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// recover quantizer for 4 4x4 blocks
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for (i = 1; i < 64; i++)
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{
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input[i]=input[i] * dq[1];
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}
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#ifdef DEC_DEBUG
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if (dec_debug) {
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int j;
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printf("Input DQ 8x8\n");
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for (j=0;j<64;j++) {
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printf("%d ", input[j]);
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if (j%8 == 7) printf("\n");
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}
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}
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#endif
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// the idct halves ( >> 1) the pitch
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vp8_short_idct8x8_c(input, output, 16);
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#ifdef DEC_DEBUG
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if (dec_debug) {
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int j;
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printf("Output 8x8\n");
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for (j=0;j<64;j++) {
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printf("%d ", output[j]);
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if (j%8 == 7) printf("\n");
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}
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}
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#endif
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vpx_memset(input, 0, 128);// test what should i put here
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for (b = 0; b < 4; b++)
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{
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for (r = 0; r < 4; r++)
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{
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for (c = 0; c < 4; c++)
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{
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int a = diff_ptr[c] + pred[c];
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if (a < 0)
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a = 0;
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if (a > 255)
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a = 255;
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dest[c] = (unsigned char) a;
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}
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dest += stride;
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diff_ptr += 8;
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pred += pitch;
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}
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diff_ptr = output + (b+1) / 2 * 4 * 8 + (b+1) % 2 * 4;
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dest = origdest + (b+1) / 2 * 4 * stride + (b+1) % 2 * 4;
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pred = origpred + (b+1) / 2 * 4 * pitch + (b+1) % 2 * 4;
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}
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#ifdef DEC_DEBUG
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if (dec_debug) {
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int k,j;
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printf("Final 8x8\n");
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for (j=0;j<8;j++) {
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for (k=0;k<8;k++) {
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printf("%d ", origdest[k]);
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}
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printf("\n");
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origdest+=stride;
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}
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}
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#endif
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}
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void vp8_dequant_dc_idct_add_8x8_c(short *input, short *dq, unsigned char *pred,
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unsigned char *dest, int pitch, int stride,
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int Dc)// Dc for 1st order T in some rear case
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{
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short output[64];
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short *diff_ptr = output;
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int r, c, b;
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int i;
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unsigned char *origdest = dest;
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unsigned char *origpred = pred;
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input[0] = (short)Dc;//Dc is the reconstructed value, do not need dequantization
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//dc value is recovered after dequantization, since dc need not quantization
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#ifdef DEC_DEBUG
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if (dec_debug) {
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int j;
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printf("Input 8x8\n");
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for (j=0;j<64;j++) {
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printf("%d ", input[j]);
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if (j%8 == 7) printf("\n");
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}
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}
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#endif
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for (i = 1; i < 64; i++)
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{
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input[i]=input[i] * dq[1];
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}
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#ifdef DEC_DEBUG
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if (dec_debug) {
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int j;
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printf("Input DQ 8x8\n");
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for (j=0;j<64;j++) {
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printf("%d ", input[j]);
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if (j%8 == 7) printf("\n");
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}
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}
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#endif
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// the idct halves ( >> 1) the pitch
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vp8_short_idct8x8_c(input, output,16);
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#ifdef DEC_DEBUG
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if (dec_debug) {
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int j;
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printf("Output 8x8\n");
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for (j=0;j<64;j++) {
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printf("%d ", output[j]);
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if (j%8 == 7) printf("\n");
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}
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}
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#endif
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vpx_memset(input, 0, 128);
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for (b = 0; b < 4; b++)
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{
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for (r = 0; r < 4; r++)
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{
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for (c = 0; c < 4; c++)
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{
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int a = diff_ptr[c] + pred[c];
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if (a < 0)
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a = 0;
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if (a > 255)
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a = 255;
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dest[c] = (unsigned char) a;
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}
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dest += stride;
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diff_ptr += 8;
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pred += pitch;
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}
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diff_ptr = output + (b+1) / 2 * 4 * 8 + (b+1) % 2 * 4;
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dest = origdest + (b+1) / 2 * 4 * stride + (b+1) % 2 * 4;
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pred = origpred + (b+1) / 2 * 4 * pitch + (b+1) % 2 * 4;
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}
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#ifdef DEC_DEBUG
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if (dec_debug) {
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int k,j;
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printf("Final 8x8\n");
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for (j=0;j<8;j++) {
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for (k=0;k<8;k++) {
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printf("%d ", origdest[k]);
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}
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printf("\n");
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origdest+=stride;
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}
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}
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#endif
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}
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