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* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
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* - Postprocessing functions - |
* - Postprocessing functions - |
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* |
* |
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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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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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|
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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(tbls, 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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|
|
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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(tbls, 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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|
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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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|
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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(tbls, 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(tbls, 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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|
|
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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; |
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deblock8x8_v(tbls, 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); |
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deblock8x8_v(tbls, 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); |
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} |
} |
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} |
} |
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s[8] = *(v[8] = img + x*stride + 3); \ |
s[8] = *(v[8] = img + x*stride + 3); \ |
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s[9] = *(v[9] = img + x*stride + 4); |
s[9] = *(v[9] = img + x*stride + 4); |
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#define APPLY_DERING(x) \ |
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*v[x] = (e[x] == 0) ? ( \ |
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(e[x-1] == 0) ? ( \ |
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(e[x+1] == 0) ? \ |
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((s[x-1]+s[x]*2+s[x+1])>>2) \ |
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: ((s[x-1]+s[x])>>1) ) \ |
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: ((s[x]+s[x+1])>>1) ) \ |
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: s[x]; |
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#define APPLY_FILTER_CORE \ |
#define APPLY_FILTER_CORE \ |
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/* First, decide whether to use default or DC-offset mode */ \ |
/* First, decide whether to use default or DC-offset mode */ \ |
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\ |
\ |
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*v[4] -= diff; \ |
*v[4] -= diff; \ |
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*v[5] += diff; \ |
*v[5] += diff; \ |
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} \ |
} \ |
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if (dering) { \ |
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e[0] = (tbls->xvid_abs_tbl[(s[0] - s[1]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
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e[1] = (tbls->xvid_abs_tbl[(s[1] - s[2]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
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e[2] = (tbls->xvid_abs_tbl[(s[2] - s[3]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
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e[3] = (tbls->xvid_abs_tbl[(s[3] - s[4]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
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e[4] = (tbls->xvid_abs_tbl[(s[4] - s[5]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
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e[5] = (tbls->xvid_abs_tbl[(s[5] - s[6]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
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e[6] = (tbls->xvid_abs_tbl[(s[6] - s[7]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
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e[7] = (tbls->xvid_abs_tbl[(s[7] - s[8]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
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e[8] = (tbls->xvid_abs_tbl[(s[8] - s[9]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ |
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\ |
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e[1] |= e[0]; \ |
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e[2] |= e[1]; \ |
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e[3] |= e[2]; \ |
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e[4] |= e[3]; \ |
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e[5] |= e[4]; \ |
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e[6] |= e[5]; \ |
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e[7] |= e[6]; \ |
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e[8] |= e[7]; \ |
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e[9] = e[8]; \ |
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\ |
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APPLY_DERING(1) \ |
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APPLY_DERING(2) \ |
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APPLY_DERING(3) \ |
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APPLY_DERING(4) \ |
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APPLY_DERING(5) \ |
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APPLY_DERING(6) \ |
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APPLY_DERING(7) \ |
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APPLY_DERING(8) \ |
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} \ |
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} \ |
} \ |
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else { /* DC-offset mode */ \ |
else { /* DC-offset mode */ \ |
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uint8_t p0, p9; \ |
uint8_t p0, p9; \ |
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} \ |
} \ |
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} |
} |
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|
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void deblock8x8_h(XVID_POSTPROC *tbls, uint8_t *img, int stride, int quant) |
void deblock8x8_h(XVID_POSTPROC *tbls, uint8_t *img, int stride, int quant, int dering) |
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{ |
{ |
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int eq_cnt; |
int eq_cnt; |
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uint8_t *v[10]; |
uint8_t *v[10]; |
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int32_t s[10]; |
int s[10]; |
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int e[10]; |
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LOAD_DATA_HOR(0) |
LOAD_DATA_HOR(0) |
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APPLY_FILTER_CORE |
APPLY_FILTER_CORE |
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} |
} |
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void deblock8x8_v(XVID_POSTPROC *tbls, uint8_t *img, int stride, int quant) |
void deblock8x8_v(XVID_POSTPROC *tbls, uint8_t *img, int stride, int quant, int dering) |
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{ |
{ |
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int eq_cnt; |
int eq_cnt; |
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uint8_t *v[10]; |
uint8_t *v[10]; |
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int s[10]; |
int s[10]; |
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int e[10]; |
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LOAD_DATA_VER(0) |
LOAD_DATA_VER(0) |
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APPLY_FILTER_CORE |
APPLY_FILTER_CORE |