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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 |
21 |
* |
* |
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* $Id: postprocessing.c,v 1.1.4.2 2003-12-10 15:07:42 edgomez Exp $ |
* $Id: postprocessing.c,v 1.1.4.3 2003-12-17 17:07:38 Isibaar Exp $ |
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* |
* |
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****************************************************************************/ |
****************************************************************************/ |
25 |
|
|
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#include "../portab.h" |
#include "../portab.h" |
31 |
#include "../global.h" |
#include "../global.h" |
32 |
#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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|
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/* Filtering thresholds */ |
/* Filtering thresholds */ |
47 |
#define FAST_ABS(x) ((((int)(x)) >> 31) ^ ((int)(x))) - (((int)(x)) >> 31) |
#define FAST_ABS(x) ((((int)(x)) >> 31) ^ ((int)(x))) - (((int)(x)) >> 31) |
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#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]; |
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static int8_t xvid_abs_tbl[510]; |
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void init_postproc(void) |
void init_postproc(void) |
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{ |
{ |
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int i; |
init_deblock(); |
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init_noise(); |
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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(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 frame_num) |
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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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deblock8x8_v(img->v + j*8*edged_width2 + i*8, edged_width2, quant); |
deblock8x8_v(img->v + j*8*edged_width2 + i*8, edged_width2, quant); |
101 |
} |
} |
102 |
} |
} |
103 |
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if ((flags & XVID_FILMEFFECT)) |
105 |
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{ |
106 |
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add_noise(img->y, img->y, edged_width, mb_width*16, mb_height*16, frame_num % 3); |
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} |
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} |
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/******************************************************************************/ |
111 |
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static int8_t xvid_thresh_tbl[510]; |
113 |
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static int8_t xvid_abs_tbl[510]; |
114 |
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115 |
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void init_deblock(void) |
116 |
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{ |
117 |
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int i; |
118 |
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119 |
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for(i = -255; i < 256; i++) { |
120 |
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xvid_thresh_tbl[i + 255] = 0; |
121 |
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if(ABS(i) < THR1) |
122 |
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xvid_thresh_tbl[i + 255] = 1; |
123 |
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xvid_abs_tbl[i + 255] = ABS(i); |
124 |
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} |
125 |
} |
} |
126 |
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#define LOAD_DATA_HOR(x) \ |
#define LOAD_DATA_HOR(x) \ |
168 |
int a30, a31, a32; \ |
int a30, a31, a32; \ |
169 |
int diff, limit; \ |
int diff, limit; \ |
170 |
\ |
\ |
171 |
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if(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)); \ |
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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173 |
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)); \ |
174 |
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)); \ |
175 |
\ |
\ |
272 |
LOAD_DATA_VER(7) |
LOAD_DATA_VER(7) |
273 |
APPLY_FILTER_CORE |
APPLY_FILTER_CORE |
274 |
} |
} |
275 |
|
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276 |
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/****************************************************************************** |
277 |
|
* * |
278 |
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* Noise code below taken from MPlayer: http://www.mplayerhq.hu/ * |
279 |
|
* Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at> * |
280 |
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* * |
281 |
|
******************************************************************************/ |
282 |
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283 |
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#define MAX_NOISE 4096 |
284 |
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#define MAX_SHIFT 1024 |
285 |
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#define MAX_RES (MAX_NOISE - MAX_SHIFT) |
286 |
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287 |
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#define RAND_N(range) ((int) ((double)range * rand() / (RAND_MAX + 1.0))) |
288 |
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289 |
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#define STRENGTH 13 |
290 |
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291 |
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static int8_t xvid_noise[MAX_NOISE * sizeof(int8_t)]; |
292 |
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static int8_t *xvid_prev_shift[MAX_RES][3]; |
293 |
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294 |
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void init_noise(void) |
295 |
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{ |
296 |
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int i, j; |
297 |
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int patt[4] = { -1,0,1,0 }; |
298 |
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|
299 |
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emms(); |
300 |
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301 |
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srand(123457); |
302 |
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303 |
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for(i = 0, j = 0; i < MAX_NOISE; i++, j++) |
304 |
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{ |
305 |
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double x1, x2, w, y1; |
306 |
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307 |
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do { |
308 |
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x1 = 2.0 * rand() / (float) RAND_MAX - 1.0; |
309 |
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x2 = 2.0 * rand() / (float) RAND_MAX - 1.0; |
310 |
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w = x1 * x1 + x2 * x2; |
311 |
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} while (w >= 1.0); |
312 |
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313 |
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w = sqrt((-2.0 * log(w)) / w); |
314 |
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y1 = x1 * w; |
315 |
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y1 *= STRENGTH / sqrt(3.0); |
316 |
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|
317 |
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y1 /= 2; |
318 |
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y1 += patt[j%4] * STRENGTH * 0.35; |
319 |
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|
320 |
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if (y1 < -128) { |
321 |
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y1=-128; |
322 |
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} |
323 |
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else if (y1 > 127) { |
324 |
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y1= 127; |
325 |
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} |
326 |
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|
327 |
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y1 /= 3.0; |
328 |
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xvid_noise[i] = (int) y1; |
329 |
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|
330 |
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if (RAND_N(6) == 0) { |
331 |
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j--; |
332 |
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} |
333 |
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} |
334 |
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|
335 |
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for (i = 0; i < MAX_RES; i++) |
336 |
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for (j = 0; j < 3; j++) { |
337 |
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xvid_prev_shift[i][j] = xvid_noise + (rand() & (MAX_SHIFT - 1)); |
338 |
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} |
339 |
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} |
340 |
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341 |
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void add_noise(uint8_t *dst, uint8_t *src, int stride, int width, int height, int shiftptr) |
342 |
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{ |
343 |
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int x, y; |
344 |
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int shift = 0; |
345 |
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|
346 |
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for(y = 0; y < height; y++) |
347 |
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{ |
348 |
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int8_t *src2 = (int8_t *) src; |
349 |
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|
350 |
|
shift = rand() & (MAX_SHIFT - 1); |
351 |
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352 |
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shift &= ~7; |
353 |
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for(x = 0; x < width; x++) |
354 |
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{ |
355 |
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const int n = xvid_prev_shift[y][0][x] + xvid_prev_shift[y][1][x] + |
356 |
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xvid_prev_shift[y][2][x]; |
357 |
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358 |
|
dst[x] = src2[x] + ((n * src2[x]) >> 7); |
359 |
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} |
360 |
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|
361 |
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xvid_prev_shift[y][shiftptr] = xvid_noise + shift; |
362 |
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|
363 |
|
dst += stride; |
364 |
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src += stride; |
365 |
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} |
366 |
|
} |