3 |
* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
4 |
* - Postprocessing functions - |
* - Postprocessing functions - |
5 |
* |
* |
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* Copyright(C) 2003 Michael Militzer <isibaar@xvid.org> |
* Copyright(C) 2003-2004 Michael Militzer <isibaar@xvid.org> |
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* 2004 Marc Fauconneau |
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* |
* |
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* This program is free software ; you can redistribute it and/or modify |
* This program is free software ; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
* it under the terms of the GNU General Public License as published by |
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* along with this program ; if not, write to the Free Software |
* along with this program ; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
* |
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* $Id$ |
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* |
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****************************************************************************/ |
****************************************************************************/ |
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#include <stdlib.h> |
#include <stdlib.h> |
31 |
#include "../portab.h" |
#include "../portab.h" |
32 |
#include "../global.h" |
#include "../global.h" |
33 |
#include "image.h" |
#include "image.h" |
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#include "../utils/emms.h" |
35 |
#include "postprocessing.h" |
#include "postprocessing.h" |
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37 |
/* Filtering thresholds */ |
/* function pointers */ |
38 |
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IMAGEBRIGHTNESS_PTR image_brightness; |
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#define THR1 2 |
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#define THR2 6 |
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/* Some useful (and fast) macros |
/* Some useful (and fast) macros |
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Note that the MIN/MAX macros assume signed shift - if your compiler |
Note that the MIN/MAX macros assume signed shift - if your compiler |
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#define FAST_ABS(x) ((((int)(x)) >> 31) ^ ((int)(x))) - (((int)(x)) >> 31) |
#define FAST_ABS(x) ((((int)(x)) >> 31) ^ ((int)(x))) - (((int)(x)) >> 31) |
48 |
#define ABS(X) (((X)>0)?(X):-(X)) |
#define ABS(X) (((X)>0)?(X):-(X)) |
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static int8_t xvid_thresh_tbl[510]; |
void init_postproc(XVID_POSTPROC *tbls) |
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static int8_t xvid_abs_tbl[510]; |
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void init_postproc(void) |
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{ |
{ |
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int i; |
init_deblock(tbls); |
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init_noise(tbls); |
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for(i = -255; i < 256; i++) { |
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xvid_thresh_tbl[i + 255] = 0; |
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if(ABS(i) < THR1) |
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xvid_thresh_tbl[i + 255] = 1; |
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xvid_abs_tbl[i + 255] = ABS(i); |
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} |
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} |
} |
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void |
void |
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image_deblock(IMAGE * img, int edged_width, |
image_postproc(XVID_POSTPROC *tbls, IMAGE * img, int edged_width, |
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const MACROBLOCK * mbs, int mb_width, int mb_height, int mb_stride, |
const MACROBLOCK * mbs, int mb_width, int mb_height, int mb_stride, |
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int flags) |
int flags, int brightness, int frame_num, int bvop) |
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{ |
{ |
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const int edged_width2 = edged_width /2; |
const int edged_width2 = edged_width /2; |
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int i,j; |
int i,j; |
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int quant; |
int quant; |
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int dering = flags & XVID_DERINGY; |
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/* luma: j,i in block units */ |
/* luma: j,i in block units */ |
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if ((flags & XVID_DEBLOCKY)) |
if ((flags & XVID_DEBLOCKY)) |
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for (i = 0; i < mb_width*2; i++) |
for (i = 0; i < mb_width*2; i++) |
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{ |
{ |
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quant = mbs[(j+0)/2*mb_stride + (i/2)].quant; |
quant = mbs[(j+0)/2*mb_stride + (i/2)].quant; |
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deblock8x8_h(img->y + j*8*edged_width + i*8, edged_width, quant); |
deblock8x8_h(tbls, img->y + j*8*edged_width + i*8, edged_width, quant, dering); |
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} |
} |
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for (j = 0; j < mb_height*2; j++) /* vertical deblocking */ |
for (j = 0; j < mb_height*2; j++) /* vertical deblocking */ |
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for (i = 1; i < mb_width*2; i++) |
for (i = 1; i < mb_width*2; i++) |
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{ |
{ |
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quant = mbs[(j+0)/2*mb_stride + (i/2)].quant; |
quant = mbs[(j+0)/2*mb_stride + (i/2)].quant; |
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deblock8x8_v(img->y + j*8*edged_width + i*8, edged_width, quant); |
deblock8x8_v(tbls, img->y + j*8*edged_width + i*8, edged_width, quant, dering); |
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} |
} |
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} |
} |
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/* chroma */ |
/* chroma */ |
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if ((flags & XVID_DEBLOCKUV)) |
if ((flags & XVID_DEBLOCKUV)) |
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{ |
{ |
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dering = flags & XVID_DERINGUV; |
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for (j = 1; j < mb_height; j++) /* horizontal deblocking */ |
for (j = 1; j < mb_height; j++) /* horizontal deblocking */ |
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for (i = 0; i < mb_width; i++) |
for (i = 0; i < mb_width; i++) |
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{ |
{ |
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quant = mbs[(j+0)*mb_stride + i].quant; |
quant = mbs[(j+0)*mb_stride + i].quant; |
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deblock8x8_h(img->u + j*8*edged_width2 + i*8, edged_width2, quant); |
deblock8x8_h(tbls, img->u + j*8*edged_width2 + i*8, edged_width2, quant, dering); |
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deblock8x8_h(img->v + j*8*edged_width2 + i*8, edged_width2, quant); |
deblock8x8_h(tbls, img->v + j*8*edged_width2 + i*8, edged_width2, quant, dering); |
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} |
} |
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for (j = 0; j < mb_height; j++) /* vertical deblocking */ |
for (j = 0; j < mb_height; j++) /* vertical deblocking */ |
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for (i = 1; i < mb_width; i++) |
for (i = 1; i < mb_width; i++) |
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{ |
{ |
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quant = mbs[(j+0)*mb_stride + i].quant; |
quant = mbs[(j+0)*mb_stride + i].quant; |
102 |
deblock8x8_v(img->u + j*8*edged_width2 + i*8, edged_width2, quant); |
deblock8x8_v(tbls, img->u + j*8*edged_width2 + i*8, edged_width2, quant, dering); |
103 |
deblock8x8_v(img->v + j*8*edged_width2 + i*8, edged_width2, quant); |
deblock8x8_v(tbls, img->v + j*8*edged_width2 + i*8, edged_width2, quant, dering); |
104 |
} |
} |
105 |
} |
} |
106 |
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107 |
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if (!bvop) |
108 |
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tbls->prev_quant = mbs->quant; |
109 |
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110 |
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if ((flags & XVID_FILMEFFECT)) |
111 |
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{ |
112 |
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add_noise(tbls, img->y, img->y, edged_width, mb_width*16, |
113 |
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mb_height*16, frame_num % 3, tbls->prev_quant); |
114 |
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} |
115 |
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116 |
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if (brightness != 0) { |
117 |
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image_brightness(img->y, edged_width, mb_width*16, mb_height*16, brightness); |
118 |
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} |
119 |
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} |
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121 |
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/******************************************************************************/ |
122 |
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123 |
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void init_deblock(XVID_POSTPROC *tbls) |
124 |
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{ |
125 |
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int i; |
126 |
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127 |
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for(i = -255; i < 256; i++) { |
128 |
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tbls->xvid_thresh_tbl[i + 255] = 0; |
129 |
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if(ABS(i) < THR1) |
130 |
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tbls->xvid_thresh_tbl[i + 255] = 1; |
131 |
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tbls->xvid_abs_tbl[i + 255] = ABS(i); |
132 |
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} |
133 |
} |
} |
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#define LOAD_DATA_HOR(x) \ |
#define LOAD_DATA_HOR(x) \ |
158 |
s[8] = *(v[8] = img + x*stride + 3); \ |
s[8] = *(v[8] = img + x*stride + 3); \ |
159 |
s[9] = *(v[9] = img + x*stride + 4); |
s[9] = *(v[9] = img + x*stride + 4); |
160 |
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161 |
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#define APPLY_DERING(x) \ |
162 |
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*v[x] = (e[x] == 0) ? ( \ |
163 |
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(e[x-1] == 0) ? ( \ |
164 |
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(e[x+1] == 0) ? \ |
165 |
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((s[x-1]+s[x]*2+s[x+1])>>2) \ |
166 |
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: ((s[x-1]+s[x])>>1) ) \ |
167 |
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: ((s[x]+s[x+1])>>1) ) \ |
168 |
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: s[x]; |
169 |
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170 |
#define APPLY_FILTER_CORE \ |
#define APPLY_FILTER_CORE \ |
171 |
/* First, decide whether to use default or DC-offset mode */ \ |
/* First, decide whether to use default or DC-offset mode */ \ |
172 |
\ |
\ |
173 |
eq_cnt = 0; \ |
eq_cnt = 0; \ |
174 |
\ |
\ |
175 |
eq_cnt += xvid_thresh_tbl[s[0] - s[1] + 255]; \ |
eq_cnt += tbls->xvid_thresh_tbl[s[0] - s[1] + 255]; \ |
176 |
eq_cnt += xvid_thresh_tbl[s[1] - s[2] + 255]; \ |
eq_cnt += tbls->xvid_thresh_tbl[s[1] - s[2] + 255]; \ |
177 |
eq_cnt += xvid_thresh_tbl[s[2] - s[3] + 255]; \ |
eq_cnt += tbls->xvid_thresh_tbl[s[2] - s[3] + 255]; \ |
178 |
eq_cnt += xvid_thresh_tbl[s[3] - s[4] + 255]; \ |
eq_cnt += tbls->xvid_thresh_tbl[s[3] - s[4] + 255]; \ |
179 |
eq_cnt += xvid_thresh_tbl[s[4] - s[5] + 255]; \ |
eq_cnt += tbls->xvid_thresh_tbl[s[4] - s[5] + 255]; \ |
180 |
eq_cnt += xvid_thresh_tbl[s[5] - s[6] + 255]; \ |
eq_cnt += tbls->xvid_thresh_tbl[s[5] - s[6] + 255]; \ |
181 |
eq_cnt += xvid_thresh_tbl[s[6] - s[7] + 255]; \ |
eq_cnt += tbls->xvid_thresh_tbl[s[6] - s[7] + 255]; \ |
182 |
eq_cnt += xvid_thresh_tbl[s[7] - s[8] + 255]; \ |
eq_cnt += tbls->xvid_thresh_tbl[s[7] - s[8] + 255]; \ |
183 |
\ |
\ |
184 |
if(eq_cnt < THR2) { /* Default mode */ \ |
if(eq_cnt < THR2) { /* Default mode */ \ |
185 |
int a30, a31, a32; \ |
int a30, a31, a32; \ |
186 |
int diff, limit; \ |
int diff, limit; \ |
187 |
\ |
\ |
188 |
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if(tbls->xvid_abs_tbl[(s[4] - s[5]) + 255] < quant) { \ |
189 |
a30 = ((s[3]<<1) - s[4] * 5 + s[5] * 5 - (s[6]<<1)); \ |
a30 = ((s[3]<<1) - s[4] * 5 + s[5] * 5 - (s[6]<<1)); \ |
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\ |
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if(xvid_abs_tbl[a30 + 255] < 8*quant) { \ |
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a31 = ((s[1]<<1) - s[2] * 5 + s[3] * 5 - (s[4]<<1)); \ |
a31 = ((s[1]<<1) - s[2] * 5 + s[3] * 5 - (s[4]<<1)); \ |
191 |
a32 = ((s[5]<<1) - s[6] * 5 + s[7] * 5 - (s[8]<<1)); \ |
a32 = ((s[5]<<1) - s[6] * 5 + s[7] * 5 - (s[8]<<1)); \ |
192 |
\ |
\ |
193 |
diff = (5 * ((SIGN(a30) * MIN(xvid_abs_tbl[a30 + 255], MIN(xvid_abs_tbl[a31 + 255], xvid_abs_tbl[a32 + 255]))) - a30) + 32) >> 6; \ |
diff = (5 * ((SIGN(a30) * MIN(FAST_ABS(a30), MIN(FAST_ABS(a31), FAST_ABS(a32)))) - a30) + 32) >> 6; \ |
194 |
limit = (s[4] - s[5]) / 2; \ |
limit = (s[4] - s[5]) / 2; \ |
195 |
\ |
\ |
196 |
if (limit > 0) \ |
if (limit > 0) \ |
201 |
*v[4] -= diff; \ |
*v[4] -= diff; \ |
202 |
*v[5] += diff; \ |
*v[5] += diff; \ |
203 |
} \ |
} \ |
204 |
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if (dering) { \ |
205 |
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e[0] = (tbls->xvid_abs_tbl[(s[0] - s[1]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
206 |
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e[1] = (tbls->xvid_abs_tbl[(s[1] - s[2]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
207 |
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e[2] = (tbls->xvid_abs_tbl[(s[2] - s[3]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
208 |
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e[3] = (tbls->xvid_abs_tbl[(s[3] - s[4]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
209 |
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e[4] = (tbls->xvid_abs_tbl[(s[4] - s[5]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
210 |
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e[5] = (tbls->xvid_abs_tbl[(s[5] - s[6]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
211 |
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e[6] = (tbls->xvid_abs_tbl[(s[6] - s[7]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
212 |
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e[7] = (tbls->xvid_abs_tbl[(s[7] - s[8]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
213 |
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e[8] = (tbls->xvid_abs_tbl[(s[8] - s[9]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
214 |
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\ |
215 |
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e[1] |= e[0]; \ |
216 |
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e[2] |= e[1]; \ |
217 |
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e[3] |= e[2]; \ |
218 |
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e[4] |= e[3]; \ |
219 |
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e[5] |= e[4]; \ |
220 |
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e[6] |= e[5]; \ |
221 |
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e[7] |= e[6]; \ |
222 |
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e[8] |= e[7]; \ |
223 |
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e[9] = e[8]; \ |
224 |
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\ |
225 |
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APPLY_DERING(1) \ |
226 |
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APPLY_DERING(2) \ |
227 |
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APPLY_DERING(3) \ |
228 |
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APPLY_DERING(4) \ |
229 |
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APPLY_DERING(5) \ |
230 |
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APPLY_DERING(6) \ |
231 |
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APPLY_DERING(7) \ |
232 |
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APPLY_DERING(8) \ |
233 |
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} \ |
234 |
} \ |
} \ |
235 |
else { /* DC-offset mode */ \ |
else { /* DC-offset mode */ \ |
236 |
uint8_t p0, p9; \ |
uint8_t p0, p9; \ |
243 |
if(((max-min)) < 2*quant) { \ |
if(((max-min)) < 2*quant) { \ |
244 |
\ |
\ |
245 |
/* Choose edge pixels */ \ |
/* Choose edge pixels */ \ |
246 |
p0 = (xvid_abs_tbl[(s[1] - s[0]) + 255] < quant) ? s[0] : s[1]; \ |
p0 = (tbls->xvid_abs_tbl[(s[1] - s[0]) + 255] < quant) ? s[0] : s[1]; \ |
247 |
p9 = (xvid_abs_tbl[(s[8] - s[9]) + 255] < quant) ? s[9] : s[8]; \ |
p9 = (tbls->xvid_abs_tbl[(s[8] - s[9]) + 255] < quant) ? s[9] : s[8]; \ |
248 |
\ |
\ |
249 |
*v[1] = (uint8_t) ((6*p0 + (s[1]<<2) + (s[2]<<1) + (s[3]<<1) + s[4] + s[5] + 8) >> 4); \ |
*v[1] = (uint8_t) ((6*p0 + (s[1]<<2) + (s[2]<<1) + (s[3]<<1) + s[4] + s[5] + 8) >> 4); \ |
250 |
*v[2] = (uint8_t) (((p0<<2) + (s[1]<<1) + (s[2]<<2) + (s[3]<<1) + (s[4]<<1) + s[5] + s[6] + 8) >> 4); \ |
*v[2] = (uint8_t) (((p0<<2) + (s[1]<<1) + (s[2]<<2) + (s[3]<<1) + (s[4]<<1) + s[5] + s[6] + 8) >> 4); \ |
257 |
} \ |
} \ |
258 |
} |
} |
259 |
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260 |
void deblock8x8_h(uint8_t *img, int stride, int quant) |
void deblock8x8_h(XVID_POSTPROC *tbls, uint8_t *img, int stride, int quant, int dering) |
261 |
{ |
{ |
262 |
int eq_cnt; |
int eq_cnt; |
263 |
uint8_t *v[10]; |
uint8_t *v[10]; |
264 |
int32_t s[10]; |
int s[10]; |
265 |
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int e[10]; |
266 |
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267 |
LOAD_DATA_HOR(0) |
LOAD_DATA_HOR(0) |
268 |
APPLY_FILTER_CORE |
APPLY_FILTER_CORE |
290 |
} |
} |
291 |
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292 |
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293 |
void deblock8x8_v(uint8_t *img, int stride, int quant) |
void deblock8x8_v(XVID_POSTPROC *tbls, uint8_t *img, int stride, int quant, int dering) |
294 |
{ |
{ |
295 |
int eq_cnt; |
int eq_cnt; |
296 |
uint8_t *v[10]; |
uint8_t *v[10]; |
297 |
int s[10]; |
int s[10]; |
298 |
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int e[10]; |
299 |
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300 |
LOAD_DATA_VER(0) |
LOAD_DATA_VER(0) |
301 |
APPLY_FILTER_CORE |
APPLY_FILTER_CORE |
321 |
LOAD_DATA_VER(7) |
LOAD_DATA_VER(7) |
322 |
APPLY_FILTER_CORE |
APPLY_FILTER_CORE |
323 |
} |
} |
324 |
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325 |
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/****************************************************************************** |
326 |
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* * |
327 |
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* Noise code below taken from MPlayer: http://www.mplayerhq.hu/ * |
328 |
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* Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at> * |
329 |
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* * |
330 |
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******************************************************************************/ |
331 |
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332 |
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#define RAND_N(range) ((int) ((double)range * rand() / (RAND_MAX + 1.0))) |
333 |
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#define STRENGTH1 12 |
334 |
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#define STRENGTH2 8 |
335 |
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336 |
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void init_noise(XVID_POSTPROC *tbls) |
337 |
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{ |
338 |
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int i, j; |
339 |
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int patt[4] = { -1,0,1,0 }; |
340 |
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341 |
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emms(); |
342 |
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343 |
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srand(123457); |
344 |
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345 |
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for(i = 0, j = 0; i < MAX_NOISE; i++, j++) |
346 |
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{ |
347 |
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double x1, x2, w, y1, y2; |
348 |
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349 |
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do { |
350 |
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x1 = 2.0 * rand() / (float) RAND_MAX - 1.0; |
351 |
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x2 = 2.0 * rand() / (float) RAND_MAX - 1.0; |
352 |
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w = x1 * x1 + x2 * x2; |
353 |
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} while (w >= 1.0); |
354 |
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355 |
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w = sqrt((-2.0 * log(w)) / w); |
356 |
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y1 = x1 * w; |
357 |
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y2 = x1 * w; |
358 |
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359 |
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y1 *= STRENGTH1 / sqrt(3.0); |
360 |
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y2 *= STRENGTH2 / sqrt(3.0); |
361 |
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362 |
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y1 /= 2; |
363 |
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y2 /= 2; |
364 |
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y1 += patt[j%4] * STRENGTH1 * 0.35; |
365 |
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y2 += patt[j%4] * STRENGTH2 * 0.35; |
366 |
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367 |
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if (y1 < -128) { |
368 |
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y1=-128; |
369 |
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} |
370 |
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else if (y1 > 127) { |
371 |
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y1= 127; |
372 |
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} |
373 |
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374 |
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if (y2 < -128) { |
375 |
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y2=-128; |
376 |
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} |
377 |
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else if (y2 > 127) { |
378 |
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y2= 127; |
379 |
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} |
380 |
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381 |
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y1 /= 3.0; |
382 |
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y2 /= 3.0; |
383 |
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tbls->xvid_noise1[i] = (int) y1; |
384 |
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tbls->xvid_noise2[i] = (int) y2; |
385 |
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|
386 |
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if (RAND_N(6) == 0) { |
387 |
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j--; |
388 |
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} |
389 |
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} |
390 |
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391 |
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for (i = 0; i < MAX_RES; i++) |
392 |
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for (j = 0; j < 3; j++) { |
393 |
|
tbls->xvid_prev_shift[i][j] = tbls->xvid_noise1 + (rand() & (MAX_SHIFT - 1)); |
394 |
|
tbls->xvid_prev_shift[i][3 + j] = tbls->xvid_noise2 + (rand() & (MAX_SHIFT - 1)); |
395 |
|
} |
396 |
|
} |
397 |
|
|
398 |
|
void add_noise(XVID_POSTPROC *tbls, uint8_t *dst, uint8_t *src, int stride, int width, int height, int shiftptr, int quant) |
399 |
|
{ |
400 |
|
int x, y; |
401 |
|
int shift = 0; |
402 |
|
int add = (quant < 5) ? 3 : 0; |
403 |
|
int8_t *noise = (quant < 5) ? tbls->xvid_noise2 : tbls->xvid_noise1; |
404 |
|
|
405 |
|
for(y = 0; y < height; y++) |
406 |
|
{ |
407 |
|
int8_t *src2 = (int8_t *) src; |
408 |
|
|
409 |
|
shift = rand() & (MAX_SHIFT - 1); |
410 |
|
|
411 |
|
shift &= ~7; |
412 |
|
for(x = 0; x < width; x++) |
413 |
|
{ |
414 |
|
const int n = tbls->xvid_prev_shift[y][0 + add][x] + tbls->xvid_prev_shift[y][1 + add][x] + |
415 |
|
tbls->xvid_prev_shift[y][2 + add][x]; |
416 |
|
|
417 |
|
dst[x] = src2[x] + ((n * src2[x]) >> 7); |
418 |
|
} |
419 |
|
|
420 |
|
tbls->xvid_prev_shift[y][shiftptr + add] = noise + shift; |
421 |
|
|
422 |
|
dst += stride; |
423 |
|
src += stride; |
424 |
|
} |
425 |
|
} |
426 |
|
|
427 |
|
|
428 |
|
void image_brightness_c(uint8_t *dst, int stride, int width, int height, int offset) |
429 |
|
{ |
430 |
|
int x,y; |
431 |
|
|
432 |
|
for(y = 0; y < height; y++) |
433 |
|
{ |
434 |
|
for(x = 0; x < width; x++) |
435 |
|
{ |
436 |
|
int p = dst[y*stride + x]; |
437 |
|
dst[y*stride + x] = CLIP( p + offset, 0, 255); |
438 |
|
} |
439 |
|
} |
440 |
|
} |