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/***************************************************************************** |
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* |
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* XVID MPEG-4 VIDEO CODEC |
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* - Postprocessing functions - |
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* |
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* Copyright(C) 2003-2010 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 |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation ; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY ; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* 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 |
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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> |
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#include <string.h> |
#include <string.h> |
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#include <math.h> |
#include <math.h> |
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#include "../portab.h" |
#include "../portab.h" |
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#include "../global.h" |
#include "../global.h" |
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#include "image.h" |
#include "image.h" |
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#include "../utils/emms.h" |
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#include "postprocessing.h" |
#include "postprocessing.h" |
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/* function pointers */ |
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IMAGEBRIGHTNESS_PTR image_brightness; |
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/* Some useful (and fast) macros |
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Note that the MIN/MAX macros assume signed shift - if your compiler |
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doesn't do signed shifts, use the default MIN/MAX macros from global.h */ |
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#define FAST_MAX(x,y) ((x) - ((((x) - (y))>>(32 - 1)) & ((x) - (y)))) |
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#define FAST_MIN(x,y) ((x) + ((((y) - (x))>>(32 - 1)) & ((y) - (x)))) |
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#define FAST_ABS(x) ((((int)(x)) >> 31) ^ ((int)(x))) - (((int)(x)) >> 31) |
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#define ABS(X) (((X)>0)?(X):-(X)) |
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void init_postproc(XVID_POSTPROC *tbls) |
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{ |
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init_deblock(tbls); |
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init_noise(tbls); |
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} |
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void |
void |
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image_deblock(IMAGE * img, int edged_width, |
stripe_deblock_h(SMPDeblock *h) |
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const MACROBLOCK * mbs, int mb_width, int mb_height, int mb_stride, |
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int flags) |
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{ |
{ |
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const int edged_width2 = edged_width /2; |
const int stride = h->stride; |
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const int stride2 = stride /2; |
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int i,j; |
int i,j; |
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int quant; |
int quant; |
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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_DEC_DEBLOCKY)) |
if ((h->flags & XVID_DEBLOCKY)) |
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{ |
{ |
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for (j = 1; j < mb_height*2; j++) /* horizontal deblocking */ |
int dering = h->flags & XVID_DERINGY; |
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for (i = 0; i < mb_width*2; i++) |
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for (j = 1; j < h->stop_y; j++) /* horizontal luma deblocking */ |
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for (i = h->start_x; i < h->stop_x; i++) |
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{ |
{ |
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quant = mbs[(j+0)/2*mb_stride + (i/2)].quant; |
quant = h->mbs[(j+0)/2*h->mb_stride + (i/2)].quant; |
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deblock8x8_h(img->y + j*8*edged_width + i*8, edged_width, quant); |
deblock8x8_h(h->tbls, h->img->y + j*8*stride + i*8, stride, quant, dering); |
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} |
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} |
} |
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for (j = 0; j < mb_height*2; j++) /* vertical deblocking */ |
/* chroma */ |
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for (i = 1; i < mb_width*2; i++) |
if ((h->flags & XVID_DEBLOCKUV)) |
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{ |
{ |
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quant = mbs[(j+0)/2*mb_stride + (i/2)].quant; |
int dering = h->flags & XVID_DERINGUV; |
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deblock8x8_v(img->y + j*8*edged_width + i*8, edged_width, quant); |
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for (j = 1; j < h->stop_y/2; j++) /* horizontal deblocking */ |
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for (i = h->start_x/2; i < h->stop_x/2; i++) |
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{ |
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quant = h->mbs[(j+0)*h->mb_stride + i].quant; |
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deblock8x8_h(h->tbls, h->img->u + j*8*stride2 + i*8, stride2, quant, dering); |
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deblock8x8_h(h->tbls, h->img->v + j*8*stride2 + i*8, stride2, quant, dering); |
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} |
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} |
} |
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} |
} |
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void |
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stripe_deblock_v(SMPDeblock *h) |
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{ |
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const int stride = h->stride; |
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const int stride2 = stride /2; |
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/* chroma */ |
int i,j; |
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if ((flags & XVID_DEC_DEBLOCKUV)) |
int quant; |
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/* luma: j,i in block units */ |
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if ((h->flags & XVID_DEBLOCKY)) |
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{ |
{ |
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for (j = 1; j < mb_height; j++) /* horizontal deblocking */ |
int dering = h->flags & XVID_DERINGY; |
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for (i = 0; i < mb_width; i++) |
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for (j = h->start_y; j < h->stop_y; j++) /* vertical deblocking */ |
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for (i = 1; i < h->stop_x; i++) |
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{ |
{ |
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quant = mbs[(j+0)*mb_stride + i].quant; |
quant = h->mbs[(j+0)/2*h->mb_stride + (i/2)].quant; |
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deblock8x8_h(img->u + j*8*edged_width2 + i*8, edged_width2, quant); |
deblock8x8_v(h->tbls, h->img->y + j*8*stride + i*8, stride, quant, dering); |
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deblock8x8_h(img->v + j*8*edged_width2 + i*8, edged_width2, quant); |
} |
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} |
} |
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for (j = 0; j < mb_height; j++) /* vertical deblocking */ |
/* chroma */ |
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for (i = 1; i < mb_width; i++) |
if ((h->flags & XVID_DEBLOCKUV)) |
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{ |
{ |
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quant = mbs[(j+0)*mb_stride + i].quant; |
int dering = h->flags & XVID_DERINGUV; |
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deblock8x8_v(img->u + j*8*edged_width2 + i*8, edged_width2, quant); |
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deblock8x8_v(img->v + j*8*edged_width2 + i*8, edged_width2, quant); |
for (j = h->start_y/2; j < h->stop_y/2; j++) /* vertical deblocking */ |
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for (i = 1; i < h->stop_x/2; i++) |
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{ |
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quant = h->mbs[(j+0)*h->mb_stride + i].quant; |
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deblock8x8_v(h->tbls, h->img->u + j*8*stride2 + i*8, stride2, quant, dering); |
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deblock8x8_v(h->tbls, h->img->v + j*8*stride2 + i*8, stride2, quant, dering); |
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} |
} |
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} |
} |
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} |
} |
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#define THR1 2 |
void |
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#define THR2 6 |
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, |
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int flags, int brightness, int frame_num, int bvop, int threads) |
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{ |
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int k, num_threads = MAX(1, MIN(threads, 4)); |
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SMPDeblock data[4]; |
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void *status = NULL; |
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/* horizontal deblocking, dispatch threads */ |
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for (k = 0; k < num_threads; k++) { |
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data[k].flags = flags; |
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data[k].img = img; |
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data[k].mb_stride = mb_stride; |
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data[k].mbs = mbs; |
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data[k].stride = edged_width; |
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data[k].tbls = tbls; |
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data[k].start_x = (k*mb_width / num_threads)*2; |
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data[k].stop_x = ((k+1)*mb_width / num_threads)*2; |
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data[k].stop_y = mb_height*2; |
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} |
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/* create threads */ |
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for (k = 1; k < num_threads; k++) { |
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pthread_create(&data[k].handle, NULL, |
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(void*)stripe_deblock_h, (void*)&data[k]); |
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} |
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stripe_deblock_h(&data[0]); |
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/* wait until all threads are finished */ |
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for (k = 1; k < num_threads; k++) { |
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pthread_join(data[k].handle, &status); |
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} |
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/* vertical deblocking, dispatch threads */ |
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for (k = 0; k < num_threads; k++) { |
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data[k].start_y = (k*mb_height / num_threads)*2; |
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data[k].stop_y = ((k+1)*mb_height / num_threads)*2; |
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data[k].stop_x = mb_width*2; |
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} |
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/* create threads */ |
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for (k = 1; k < num_threads; k++) { |
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pthread_create(&data[k].handle, NULL, |
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(void*)stripe_deblock_v, (void*)&data[k]); |
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} |
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stripe_deblock_v(&data[0]); |
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/* wait until all threads are finished */ |
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for (k = 1; k < num_threads; k++) { |
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pthread_join(data[k].handle, &status); |
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} |
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if (!bvop) |
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tbls->prev_quant = mbs->quant; |
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if ((flags & XVID_FILMEFFECT)) |
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{ |
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add_noise(tbls, img->y, img->y, edged_width, mb_width*16, |
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mb_height*16, frame_num % 3, tbls->prev_quant); |
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} |
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if (brightness != 0) { |
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image_brightness(img->y, edged_width, mb_width*16, mb_height*16, brightness); |
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} |
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} |
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/******************************************************************************/ |
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void init_deblock(XVID_POSTPROC *tbls) |
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{ |
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int i; |
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for(i = -255; i < 256; i++) { |
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tbls->xvid_thresh_tbl[i + 255] = 0; |
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if(ABS(i) < THR1) |
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tbls->xvid_thresh_tbl[i + 255] = 1; |
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tbls->xvid_abs_tbl[i + 255] = ABS(i); |
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} |
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} |
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#define LOAD_DATA_HOR(x) \ |
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/* Load pixel addresses and data for filtering */ \ |
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s[0] = *(v[0] = img - 5*stride + x); \ |
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s[1] = *(v[1] = img - 4*stride + x); \ |
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s[2] = *(v[2] = img - 3*stride + x); \ |
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s[3] = *(v[3] = img - 2*stride + x); \ |
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s[4] = *(v[4] = img - 1*stride + x); \ |
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s[5] = *(v[5] = img + 0*stride + x); \ |
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s[6] = *(v[6] = img + 1*stride + x); \ |
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s[7] = *(v[7] = img + 2*stride + x); \ |
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s[8] = *(v[8] = img + 3*stride + x); \ |
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s[9] = *(v[9] = img + 4*stride + x); |
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#define LOAD_DATA_VER(x) \ |
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/* Load pixel addresses and data for filtering */ \ |
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s[0] = *(v[0] = img + x*stride - 5); \ |
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s[1] = *(v[1] = img + x*stride - 4); \ |
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s[2] = *(v[2] = img + x*stride - 3); \ |
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s[3] = *(v[3] = img + x*stride - 2); \ |
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s[4] = *(v[4] = img + x*stride - 1); \ |
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s[5] = *(v[5] = img + x*stride + 0); \ |
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s[6] = *(v[6] = img + x*stride + 1); \ |
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s[7] = *(v[7] = img + x*stride + 2); \ |
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s[8] = *(v[8] = img + x*stride + 3); \ |
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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 \ |
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/* First, decide whether to use default or DC-offset mode */ \ |
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\ |
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eq_cnt = 0; \ |
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\ |
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eq_cnt += tbls->xvid_thresh_tbl[s[0] - s[1] + 255]; \ |
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eq_cnt += tbls->xvid_thresh_tbl[s[1] - s[2] + 255]; \ |
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eq_cnt += tbls->xvid_thresh_tbl[s[2] - s[3] + 255]; \ |
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eq_cnt += tbls->xvid_thresh_tbl[s[3] - s[4] + 255]; \ |
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eq_cnt += tbls->xvid_thresh_tbl[s[4] - s[5] + 255]; \ |
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eq_cnt += tbls->xvid_thresh_tbl[s[5] - s[6] + 255]; \ |
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eq_cnt += tbls->xvid_thresh_tbl[s[6] - s[7] + 255]; \ |
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eq_cnt += tbls->xvid_thresh_tbl[s[7] - s[8] + 255]; \ |
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\ |
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if(eq_cnt < THR2) { /* Default mode */ \ |
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int a30, a31, a32; \ |
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int diff, limit; \ |
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\ |
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if(tbls->xvid_abs_tbl[(s[4] - s[5]) + 255] < quant) { \ |
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a30 = ((s[3]<<1) - s[4] * 5 + s[5] * 5 - (s[6]<<1)); \ |
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a31 = ((s[1]<<1) - s[2] * 5 + s[3] * 5 - (s[4]<<1)); \ |
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a32 = ((s[5]<<1) - s[6] * 5 + s[7] * 5 - (s[8]<<1)); \ |
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\ |
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diff = (5 * ((SIGN(a30) * MIN(FAST_ABS(a30), MIN(FAST_ABS(a31), FAST_ABS(a32)))) - a30) + 32) >> 6; \ |
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limit = (s[4] - s[5]) / 2; \ |
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\ |
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if (limit > 0) \ |
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diff = (diff < 0) ? 0 : ((diff > limit) ? limit : diff); \ |
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else \ |
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diff = (diff > 0) ? 0 : ((diff < limit) ? limit : diff); \ |
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\ |
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*v[4] -= diff; \ |
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*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 */ \ |
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uint8_t p0, p9; \ |
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int min, max; \ |
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\ |
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/* Now decide whether to apply smoothing filter or not */ \ |
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max = FAST_MAX(s[1], FAST_MAX(s[2], FAST_MAX(s[3], FAST_MAX(s[4], FAST_MAX(s[5], FAST_MAX(s[6], FAST_MAX(s[7], s[8]))))))); \ |
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min = FAST_MIN(s[1], FAST_MIN(s[2], FAST_MIN(s[3], FAST_MIN(s[4], FAST_MIN(s[5], FAST_MIN(s[6], FAST_MIN(s[7], s[8]))))))); \ |
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\ |
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if(((max-min)) < 2*quant) { \ |
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\ |
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/* Choose edge pixels */ \ |
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p0 = (tbls->xvid_abs_tbl[(s[1] - s[0]) + 255] < quant) ? s[0] : s[1]; \ |
| 329 |
|
p9 = (tbls->xvid_abs_tbl[(s[8] - s[9]) + 255] < quant) ? s[9] : s[8]; \ |
| 330 |
|
\ |
| 331 |
|
*v[1] = (uint8_t) ((6*p0 + (s[1]<<2) + (s[2]<<1) + (s[3]<<1) + s[4] + s[5] + 8) >> 4); \ |
| 332 |
|
*v[2] = (uint8_t) (((p0<<2) + (s[1]<<1) + (s[2]<<2) + (s[3]<<1) + (s[4]<<1) + s[5] + s[6] + 8) >> 4); \ |
| 333 |
|
*v[3] = (uint8_t) (((p0<<1) + (s[1]<<1) + (s[2]<<1) + (s[3]<<2) + (s[4]<<1) + (s[5]<<1) + s[6] + s[7] + 8) >> 4); \ |
| 334 |
|
*v[4] = (uint8_t) ((p0 + s[1] + (s[2]<<1) + (s[3]<<1) + (s[4]<<2) + (s[5]<<1) + (s[6]<<1) + s[7] + s[8] + 8) >> 4); \ |
| 335 |
|
*v[5] = (uint8_t) ((s[1] + s[2] + (s[3]<<1) + (s[4]<<1) + (s[5]<<2) + (s[6]<<1) + (s[7]<<1) + s[8] + p9 + 8) >> 4); \ |
| 336 |
|
*v[6] = (uint8_t) ((s[2] + s[3] + (s[4]<<1) + (s[5]<<1) + (s[6]<<2) + (s[7]<<1) + (s[8]<<1) + (p9<<1) + 8) >> 4); \ |
| 337 |
|
*v[7] = (uint8_t) ((s[3] + s[4] + (s[5]<<1) + (s[6]<<1) + (s[7]<<2) + (s[8]<<1) + (p9<<2) + 8) >> 4); \ |
| 338 |
|
*v[8] = (uint8_t) ((s[4] + s[5] + (s[6]<<1) + (s[7]<<1) + (s[8]<<2) + 6*p9 + 8) >> 4); \ |
| 339 |
|
} \ |
| 340 |
|
} |
| 341 |
|
|
| 342 |
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) |
| 343 |
{ |
{ |
|
int i, j; |
|
| 344 |
int eq_cnt; |
int eq_cnt; |
| 345 |
uint8_t *v[10], p0, p9; |
uint8_t *v[10]; |
| 346 |
int min, max; |
int s[10]; |
| 347 |
int a30, a31, a32; |
int e[10]; |
|
int diff, limit; |
|
| 348 |
|
|
| 349 |
for(j = 0; j < 8; j++) { |
LOAD_DATA_HOR(0) |
| 350 |
eq_cnt = 0; |
APPLY_FILTER_CORE |
| 351 |
|
|
| 352 |
/* Load pixel addresses for filtering */ |
LOAD_DATA_HOR(1) |
| 353 |
|
APPLY_FILTER_CORE |
| 354 |
|
|
| 355 |
for(i = 0; i < 10; i++) |
LOAD_DATA_HOR(2) |
| 356 |
v[i] = img + (i-5)*stride + j; |
APPLY_FILTER_CORE |
| 357 |
|
|
| 358 |
/* First, decide whether to use default or DC-offset mode */ |
LOAD_DATA_HOR(3) |
| 359 |
|
APPLY_FILTER_CORE |
| 360 |
|
|
| 361 |
for(i = 0; i < 9; i++) |
LOAD_DATA_HOR(4) |
| 362 |
{ |
APPLY_FILTER_CORE |
| 363 |
if(ABS(*v[i] - *v[(i+1)]) < THR1) |
|
| 364 |
eq_cnt++; |
LOAD_DATA_HOR(5) |
| 365 |
|
APPLY_FILTER_CORE |
| 366 |
|
|
| 367 |
|
LOAD_DATA_HOR(6) |
| 368 |
|
APPLY_FILTER_CORE |
| 369 |
|
|
| 370 |
|
LOAD_DATA_HOR(7) |
| 371 |
|
APPLY_FILTER_CORE |
| 372 |
} |
} |
| 373 |
|
|
|
if(eq_cnt < THR2) { /* Default mode */ |
|
| 374 |
|
|
| 375 |
a30 = (*v[3] * 2 - *v[4] * 5 + *v[5] * 5 - *v[6] * 2); |
void deblock8x8_v(XVID_POSTPROC *tbls, uint8_t *img, int stride, int quant, int dering) |
| 376 |
|
{ |
| 377 |
|
int eq_cnt; |
| 378 |
|
uint8_t *v[10]; |
| 379 |
|
int s[10]; |
| 380 |
|
int e[10]; |
| 381 |
|
|
| 382 |
if(ABS(a30) < 8*quant) { |
LOAD_DATA_VER(0) |
| 383 |
a31 = (*v[1] * 2 - *v[2] * 5 + *v[3] * 5 - *v[4] * 2); |
APPLY_FILTER_CORE |
|
a32 = (*v[5] * 2 - *v[6] * 5 + *v[7] * 5 - *v[8] * 2); |
|
| 384 |
|
|
| 385 |
diff = (5 * ((SIGN(a30) * MIN(ABS(a30), MIN(ABS(a31), ABS(a32)))) - a30) + 32) >> 6; |
LOAD_DATA_VER(1) |
| 386 |
limit = (*v[4] - *v[5]) / 2; |
APPLY_FILTER_CORE |
| 387 |
|
|
| 388 |
if (limit > 0) |
LOAD_DATA_VER(2) |
| 389 |
diff = (diff < 0) ? 0 : ((diff > limit) ? limit : diff); |
APPLY_FILTER_CORE |
|
else |
|
|
diff = (diff > 0) ? 0 : ((diff < limit) ? limit : diff); |
|
| 390 |
|
|
| 391 |
*v[4] -= diff; |
LOAD_DATA_VER(3) |
| 392 |
*v[5] += diff; |
APPLY_FILTER_CORE |
|
} |
|
|
} |
|
|
else { /* DC-offset mode */ |
|
| 393 |
|
|
| 394 |
/* Now decide whether to apply smoothing filter or not */ |
LOAD_DATA_VER(4) |
| 395 |
max = MAX(*v[1], MAX(*v[2], MAX(*v[3], MAX(*v[4], MAX(*v[5], MAX(*v[6], MAX(*v[7], *v[8]))))))); |
APPLY_FILTER_CORE |
|
min = MIN(*v[1], MIN(*v[2], MIN(*v[3], MIN(*v[4], MIN(*v[5], MIN(*v[6], MIN(*v[7], *v[8]))))))); |
|
| 396 |
|
|
| 397 |
if((max-min) < 2*quant) { |
LOAD_DATA_VER(5) |
| 398 |
|
APPLY_FILTER_CORE |
| 399 |
|
|
| 400 |
/* Choose edge pixels */ |
LOAD_DATA_VER(6) |
| 401 |
p0 = (ABS(*v[1]-*v[0]) < quant) ? *v[0] : *v[1]; |
APPLY_FILTER_CORE |
|
p9 = (ABS(*v[8]-*v[9]) < quant) ? *v[9] : *v[8]; |
|
| 402 |
|
|
| 403 |
*v[1] = (6*p0 + (*v[1]<<2) + (*v[2]<<1) + (*v[3]<<1) + *v[4] + *v[5] + 8) >> 4; |
LOAD_DATA_VER(7) |
| 404 |
*v[2] = ((p0<<2) + (*v[1]<<1) + (*v[2]<<2) + (*v[3]<<1) + (*v[4]<<1) + *v[5] + *v[6] + 8) >> 4; |
APPLY_FILTER_CORE |
|
*v[3] = ((p0<<1) + (*v[1]<<1) + (*v[2]<<1) + (*v[3]<<2) + (*v[4]<<1) + (*v[5]<<1) + *v[6] + *v[7] + 8) >> 4; |
|
|
*v[4] = (p0 + *v[1] + (*v[2]<<1) + (*v[3]<<1) + (*v[4]<<2) + (*v[5]<<1) + (*v[6]<<1) + *v[7] + *v[8] + 8) >> 4; |
|
|
*v[5] = (*v[1] + *v[2] + (*v[3]<<1) + (*v[4]<<1) + (*v[5]<<2) + (*v[6]<<1) + (*v[7]<<1) + *v[8] + p9 + 8) >> 4; |
|
|
*v[6] = (*v[2] + *v[3] + (*v[4]<<1) + (*v[5]<<1) + (*v[6]<<2) + (*v[7]<<1) + (*v[8]<<1) + (p9<<1) + 8) >> 4; |
|
|
*v[7] = (*v[3] + *v[4] + (*v[5]<<1) + (*v[6]<<1) + (*v[7]<<2) + (*v[8]<<1) + (p9<<2) + 8) >> 4; |
|
|
*v[8] = (*v[4] + *v[5] + (*v[6]<<1) + (*v[7]<<1) + (*v[8]<<2) + 6*p9 + 8) >> 4; |
|
|
} |
|
|
} |
|
|
} |
|
| 405 |
} |
} |
| 406 |
|
|
| 407 |
|
/****************************************************************************** |
| 408 |
|
* * |
| 409 |
|
* Noise code below taken from MPlayer: http://www.mplayerhq.hu/ * |
| 410 |
|
* Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at> * |
| 411 |
|
* * |
| 412 |
|
******************************************************************************/ |
| 413 |
|
|
| 414 |
|
#define RAND_N(range) ((int) ((double)range * rand() / (RAND_MAX + 1.0))) |
| 415 |
|
#define STRENGTH1 12 |
| 416 |
|
#define STRENGTH2 8 |
| 417 |
|
|
| 418 |
void deblock8x8_v(uint8_t *img, int stride, int quant) |
void init_noise(XVID_POSTPROC *tbls) |
| 419 |
{ |
{ |
| 420 |
int i, j; |
int i, j; |
| 421 |
int eq_cnt; |
int patt[4] = { -1,0,1,0 }; |
|
uint8_t *v[10], p0, p9; |
|
|
int min, max; |
|
|
int a30, a31, a32; |
|
|
int diff, limit; |
|
| 422 |
|
|
| 423 |
for(j = 0; j < 8; j++) { |
emms(); |
|
eq_cnt = 0; |
|
| 424 |
|
|
| 425 |
/* Load pixel addresses for filtering */ |
srand(123457); |
| 426 |
|
|
| 427 |
for(i = 0; i < 10; i++) |
for(i = 0, j = 0; i < MAX_NOISE; i++, j++) |
| 428 |
v[i] = img + j*stride + (i-5); |
{ |
| 429 |
|
double x1, x2, w, y1, y2; |
| 430 |
|
|
| 431 |
/* First, decide whether to use default or DC-offset mode */ |
do { |
| 432 |
|
x1 = 2.0 * rand() / (float) RAND_MAX - 1.0; |
| 433 |
|
x2 = 2.0 * rand() / (float) RAND_MAX - 1.0; |
| 434 |
|
w = x1 * x1 + x2 * x2; |
| 435 |
|
} while (w >= 1.0); |
| 436 |
|
|
| 437 |
for(i = 0; i < 9; i++) |
w = sqrt((-2.0 * log(w)) / w); |
| 438 |
{ |
y1 = x1 * w; |
| 439 |
if(ABS(*v[i] - *v[i+1]) < THR1) |
y2 = x1 * w; |
|
eq_cnt++; |
|
|
} |
|
| 440 |
|
|
| 441 |
if(eq_cnt < THR2) { /* Default mode */ |
y1 *= STRENGTH1 / sqrt(3.0); |
| 442 |
|
y2 *= STRENGTH2 / sqrt(3.0); |
| 443 |
|
|
| 444 |
a30 = (*v[3] * 2 - *v[4] * 5 + *v[5] * 5 - *v[6] * 2); |
y1 /= 2; |
| 445 |
|
y2 /= 2; |
| 446 |
|
y1 += patt[j%4] * STRENGTH1 * 0.35; |
| 447 |
|
y2 += patt[j%4] * STRENGTH2 * 0.35; |
| 448 |
|
|
| 449 |
if(ABS(a30) < 8*quant) { |
if (y1 < -128) { |
| 450 |
a31 = (*v[1] * 2 - *v[2] * 5 + *v[3] * 5 - *v[4] * 2); |
y1=-128; |
| 451 |
a32 = (*v[5] * 2 - *v[6] * 5 + *v[7] * 5 - *v[8] * 2); |
} |
| 452 |
|
else if (y1 > 127) { |
| 453 |
|
y1= 127; |
| 454 |
|
} |
| 455 |
|
|
| 456 |
|
if (y2 < -128) { |
| 457 |
|
y2=-128; |
| 458 |
|
} |
| 459 |
|
else if (y2 > 127) { |
| 460 |
|
y2= 127; |
| 461 |
|
} |
| 462 |
|
|
| 463 |
diff = (5 * ((SIGN(a30) * MIN(ABS(a30), MIN(ABS(a31), ABS(a32)))) - a30) + 32) >> 6; |
y1 /= 3.0; |
| 464 |
limit = (*v[4] - *v[5]) / 2; |
y2 /= 3.0; |
| 465 |
|
tbls->xvid_noise1[i] = (int) y1; |
| 466 |
|
tbls->xvid_noise2[i] = (int) y2; |
| 467 |
|
|
| 468 |
if (limit > 0) |
if (RAND_N(6) == 0) { |
| 469 |
diff = (diff < 0) ? 0 : ((diff > limit) ? limit : diff); |
j--; |
| 470 |
else |
} |
| 471 |
diff = (diff > 0) ? 0 : ((diff < limit) ? limit : diff); |
} |
| 472 |
|
|
| 473 |
*v[4] -= diff; |
for (i = 0; i < MAX_RES; i++) |
| 474 |
*v[5] += diff; |
for (j = 0; j < 3; j++) { |
| 475 |
|
tbls->xvid_prev_shift[i][j] = tbls->xvid_noise1 + (rand() & (MAX_SHIFT - 1)); |
| 476 |
|
tbls->xvid_prev_shift[i][3 + j] = tbls->xvid_noise2 + (rand() & (MAX_SHIFT - 1)); |
| 477 |
} |
} |
| 478 |
} |
} |
|
else { /* DC-offset mode */ |
|
| 479 |
|
|
| 480 |
/* Now decide whether to apply smoothing filter or not */ |
void add_noise(XVID_POSTPROC *tbls, uint8_t *dst, uint8_t *src, int stride, int width, int height, int shiftptr, int quant) |
| 481 |
max = MAX(*v[1], MAX(*v[2], MAX(*v[3], MAX(*v[4], MAX(*v[5], MAX(*v[6], MAX(*v[7], *v[8]))))))); |
{ |
| 482 |
min = MIN(*v[1], MIN(*v[2], MIN(*v[3], MIN(*v[4], MIN(*v[5], MIN(*v[6], MIN(*v[7], *v[8]))))))); |
int x, y; |
| 483 |
|
int shift = 0; |
| 484 |
|
int add = (quant < 5) ? 3 : 0; |
| 485 |
|
int8_t *noise = (quant < 5) ? tbls->xvid_noise2 : tbls->xvid_noise1; |
| 486 |
|
|
| 487 |
if((max-min) < 2*quant) { |
for(y = 0; y < height; y++) |
| 488 |
|
{ |
| 489 |
|
int8_t *src2 = (int8_t *) src; |
| 490 |
|
|
| 491 |
/* Choose edge pixels */ |
shift = rand() & (MAX_SHIFT - 1); |
|
p0 = (ABS(*v[1]-*v[0]) < quant) ? *v[0] : *v[1]; |
|
|
p9 = (ABS(*v[8]-*v[9]) < quant) ? *v[9] : *v[8]; |
|
| 492 |
|
|
| 493 |
*v[1] = (6*p0 + (*v[1]<<2) + (*v[2]<<1) + (*v[3]<<1) + *v[4] + *v[5] + 8) >> 4; |
shift &= ~7; |
| 494 |
*v[2] = ((p0<<2) + (*v[1]<<1) + (*v[2]<<2) + (*v[3]<<1) + (*v[4]<<1) + *v[5] + *v[6] + 8) >> 4; |
for(x = 0; x < width; x++) |
| 495 |
*v[3] = ((p0<<1) + (*v[1]<<1) + (*v[2]<<1) + (*v[3]<<2) + (*v[4]<<1) + (*v[5]<<1) + *v[6] + *v[7] + 8) >> 4; |
{ |
| 496 |
*v[4] = (p0 + *v[1] + (*v[2]<<1) + (*v[3]<<1) + (*v[4]<<2) + (*v[5]<<1) + (*v[6]<<1) + *v[7] + *v[8] + 8) >> 4; |
const int n = tbls->xvid_prev_shift[y][0 + add][x] + tbls->xvid_prev_shift[y][1 + add][x] + |
| 497 |
*v[5] = (*v[1] + *v[2] + (*v[3]<<1) + (*v[4]<<1) + (*v[5]<<2) + (*v[6]<<1) + (*v[7]<<1) + *v[8] + p9 + 8) >> 4; |
tbls->xvid_prev_shift[y][2 + add][x]; |
| 498 |
*v[6] = (*v[2] + *v[3] + (*v[4]<<1) + (*v[5]<<1) + (*v[6]<<2) + (*v[7]<<1) + (*v[8]<<1) + (p9<<1) + 8) >> 4; |
|
| 499 |
*v[7] = (*v[3] + *v[4] + (*v[5]<<1) + (*v[6]<<1) + (*v[7]<<2) + (*v[8]<<1) + (p9<<2) + 8) >> 4; |
dst[x] = src2[x] + ((n * src2[x]) >> 7); |
|
*v[8] = (*v[4] + *v[5] + (*v[6]<<1) + (*v[7]<<1) + (*v[8]<<2) + 6*p9 + 8) >> 4; |
|
| 500 |
} |
} |
| 501 |
|
|
| 502 |
|
tbls->xvid_prev_shift[y][shiftptr + add] = noise + shift; |
| 503 |
|
|
| 504 |
|
dst += stride; |
| 505 |
|
src += stride; |
| 506 |
|
} |
| 507 |
|
} |
| 508 |
|
|
| 509 |
|
|
| 510 |
|
void image_brightness_c(uint8_t *dst, int stride, int width, int height, int offset) |
| 511 |
|
{ |
| 512 |
|
int x,y; |
| 513 |
|
|
| 514 |
|
for(y = 0; y < height; y++) |
| 515 |
|
{ |
| 516 |
|
for(x = 0; x < width; x++) |
| 517 |
|
{ |
| 518 |
|
int p = dst[y*stride + x]; |
| 519 |
|
dst[y*stride + x] = CLIP( p + offset, 0, 255); |
| 520 |
} |
} |
| 521 |
} |
} |
| 522 |
} |
} |
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