| 1 | /* |
| 2 | * Software equalizer (brightness, contrast, gamma, saturation) |
| 3 | * |
| 4 | * Hampa Hug <hampa@hampa.ch> (original LUT gamma/contrast/brightness filter) |
| 5 | * Daniel Moreno <comac@comac.darktech.org> (saturation, R/G/B gamma support) |
| 6 | * Richard Felker (original MMX contrast/brightness code (vf_eq.c)) |
| 7 | * Michael Niedermayer <michalni@gmx.at> (LUT16) |
| 8 | * |
| 9 | * This file is part of MPlayer. |
| 10 | * |
| 11 | * MPlayer is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * MPlayer is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License along |
| 22 | * with MPlayer; if not, write to the Free Software Foundation, Inc., |
| 23 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 24 | */ |
| 25 | |
| 26 | #include <stdio.h> |
| 27 | #include <stdlib.h> |
| 28 | #include <string.h> |
| 29 | #include <math.h> |
| 30 | #include <inttypes.h> |
| 31 | |
| 32 | #include "config.h" |
| 33 | #include "mp_msg.h" |
| 34 | #include "cpudetect.h" |
| 35 | |
| 36 | #include "img_format.h" |
| 37 | #include "mp_image.h" |
| 38 | #include "vf.h" |
| 39 | |
| 40 | #define LUT16 |
| 41 | |
| 42 | /* Per channel parameters */ |
| 43 | typedef struct eq2_param_t { |
| 44 | unsigned char lut[256]; |
| 45 | #ifdef LUT16 |
| 46 | uint16_t lut16[256*256]; |
| 47 | #endif |
| 48 | int lut_clean; |
| 49 | |
| 50 | void (*adjust) (struct eq2_param_t *par, unsigned char *dst, unsigned char *src, |
| 51 | unsigned w, unsigned h, unsigned dstride, unsigned sstride); |
| 52 | |
| 53 | double c; |
| 54 | double b; |
| 55 | double g; |
| 56 | double w; |
| 57 | } eq2_param_t; |
| 58 | |
| 59 | typedef struct vf_priv_s { |
| 60 | eq2_param_t param[3]; |
| 61 | |
| 62 | double contrast; |
| 63 | double brightness; |
| 64 | double saturation; |
| 65 | |
| 66 | double gamma; |
| 67 | double gamma_weight; |
| 68 | double rgamma; |
| 69 | double ggamma; |
| 70 | double bgamma; |
| 71 | |
| 72 | unsigned buf_w[3]; |
| 73 | unsigned buf_h[3]; |
| 74 | unsigned char *buf[3]; |
| 75 | } vf_eq2_t; |
| 76 | |
| 77 | |
| 78 | static |
| 79 | void create_lut (eq2_param_t *par) |
| 80 | { |
| 81 | unsigned i; |
| 82 | double g, v; |
| 83 | double lw, gw; |
| 84 | |
| 85 | g = par->g; |
| 86 | gw = par->w; |
| 87 | lw = 1.0 - gw; |
| 88 | |
| 89 | if ((g < 0.001) || (g > 1000.0)) { |
| 90 | g = 1.0; |
| 91 | } |
| 92 | |
| 93 | g = 1.0 / g; |
| 94 | |
| 95 | for (i = 0; i < 256; i++) { |
| 96 | v = (double) i / 255.0; |
| 97 | v = par->c * (v - 0.5) + 0.5 + par->b; |
| 98 | |
| 99 | if (v <= 0.0) { |
| 100 | par->lut[i] = 0; |
| 101 | } |
| 102 | else { |
| 103 | v = v*lw + pow(v, g)*gw; |
| 104 | |
| 105 | if (v >= 1.0) { |
| 106 | par->lut[i] = 255; |
| 107 | } |
| 108 | else { |
| 109 | par->lut[i] = (unsigned char) (256.0 * v); |
| 110 | } |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | #ifdef LUT16 |
| 115 | for(i=0; i<256*256; i++){ |
| 116 | par->lut16[i]= par->lut[i&0xFF] + (par->lut[i>>8]<<8); |
| 117 | } |
| 118 | #endif |
| 119 | |
| 120 | par->lut_clean = 1; |
| 121 | } |
| 122 | |
| 123 | #if HAVE_MMX && HAVE_6REGS |
| 124 | static |
| 125 | void affine_1d_MMX (eq2_param_t *par, unsigned char *dst, unsigned char *src, |
| 126 | unsigned w, unsigned h, unsigned dstride, unsigned sstride) |
| 127 | { |
| 128 | unsigned i; |
| 129 | int contrast, brightness; |
| 130 | unsigned dstep, sstep; |
| 131 | int pel; |
| 132 | short brvec[4]; |
| 133 | short contvec[4]; |
| 134 | |
| 135 | // printf("\nmmx: src=%p dst=%p w=%d h=%d ds=%d ss=%d\n",src,dst,w,h,dstride,sstride); |
| 136 | |
| 137 | contrast = (int) (par->c * 256 * 16); |
| 138 | brightness = ((int) (100.0 * par->b + 100.0) * 511) / 200 - 128 - contrast / 32; |
| 139 | |
| 140 | brvec[0] = brvec[1] = brvec[2] = brvec[3] = brightness; |
| 141 | contvec[0] = contvec[1] = contvec[2] = contvec[3] = contrast; |
| 142 | |
| 143 | sstep = sstride - w; |
| 144 | dstep = dstride - w; |
| 145 | |
| 146 | while (h-- > 0) { |
| 147 | __asm__ volatile ( |
| 148 | "movq (%5), %%mm3 \n\t" |
| 149 | "movq (%6), %%mm4 \n\t" |
| 150 | "pxor %%mm0, %%mm0 \n\t" |
| 151 | "movl %4, %%eax\n\t" |
| 152 | ASMALIGN(4) |
| 153 | "1: \n\t" |
| 154 | "movq (%0), %%mm1 \n\t" |
| 155 | "movq (%0), %%mm2 \n\t" |
| 156 | "punpcklbw %%mm0, %%mm1 \n\t" |
| 157 | "punpckhbw %%mm0, %%mm2 \n\t" |
| 158 | "psllw $4, %%mm1 \n\t" |
| 159 | "psllw $4, %%mm2 \n\t" |
| 160 | "pmulhw %%mm4, %%mm1 \n\t" |
| 161 | "pmulhw %%mm4, %%mm2 \n\t" |
| 162 | "paddw %%mm3, %%mm1 \n\t" |
| 163 | "paddw %%mm3, %%mm2 \n\t" |
| 164 | "packuswb %%mm2, %%mm1 \n\t" |
| 165 | "add $8, %0 \n\t" |
| 166 | "movq %%mm1, (%1) \n\t" |
| 167 | "add $8, %1 \n\t" |
| 168 | "decl %%eax \n\t" |
| 169 | "jnz 1b \n\t" |
| 170 | : "=r" (src), "=r" (dst) |
| 171 | : "0" (src), "1" (dst), "r" (w >> 3), "r" (brvec), "r" (contvec) |
| 172 | : "%eax" |
| 173 | ); |
| 174 | |
| 175 | for (i = w & 7; i > 0; i--) { |
| 176 | pel = ((*src++ * contrast) >> 12) + brightness; |
| 177 | if (pel & 768) { |
| 178 | pel = (-pel) >> 31; |
| 179 | } |
| 180 | *dst++ = pel; |
| 181 | } |
| 182 | |
| 183 | src += sstep; |
| 184 | dst += dstep; |
| 185 | } |
| 186 | |
| 187 | __asm__ volatile ( "emms \n\t" ::: "memory" ); |
| 188 | } |
| 189 | #endif |
| 190 | |
| 191 | static |
| 192 | void apply_lut (eq2_param_t *par, unsigned char *dst, unsigned char *src, |
| 193 | unsigned w, unsigned h, unsigned dstride, unsigned sstride) |
| 194 | { |
| 195 | unsigned i, j, w2; |
| 196 | unsigned char *lut; |
| 197 | uint16_t *lut16; |
| 198 | |
| 199 | if (!par->lut_clean) { |
| 200 | create_lut (par); |
| 201 | } |
| 202 | |
| 203 | lut = par->lut; |
| 204 | #ifdef LUT16 |
| 205 | lut16 = par->lut16; |
| 206 | w2= (w>>3)<<2; |
| 207 | for (j = 0; j < h; j++) { |
| 208 | uint16_t *src16= (uint16_t*)src; |
| 209 | uint16_t *dst16= (uint16_t*)dst; |
| 210 | for (i = 0; i < w2; i+=4) { |
| 211 | dst16[i+0] = lut16[src16[i+0]]; |
| 212 | dst16[i+1] = lut16[src16[i+1]]; |
| 213 | dst16[i+2] = lut16[src16[i+2]]; |
| 214 | dst16[i+3] = lut16[src16[i+3]]; |
| 215 | } |
| 216 | i <<= 1; |
| 217 | #else |
| 218 | w2= (w>>3)<<3; |
| 219 | for (j = 0; j < h; j++) { |
| 220 | for (i = 0; i < w2; i+=8) { |
| 221 | dst[i+0] = lut[src[i+0]]; |
| 222 | dst[i+1] = lut[src[i+1]]; |
| 223 | dst[i+2] = lut[src[i+2]]; |
| 224 | dst[i+3] = lut[src[i+3]]; |
| 225 | dst[i+4] = lut[src[i+4]]; |
| 226 | dst[i+5] = lut[src[i+5]]; |
| 227 | dst[i+6] = lut[src[i+6]]; |
| 228 | dst[i+7] = lut[src[i+7]]; |
| 229 | } |
| 230 | #endif |
| 231 | for (; i < w; i++) { |
| 232 | dst[i] = lut[src[i]]; |
| 233 | } |
| 234 | |
| 235 | src += sstride; |
| 236 | dst += dstride; |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | static |
| 241 | int put_image (vf_instance_t *vf, mp_image_t *src, double pts) |
| 242 | { |
| 243 | unsigned i; |
| 244 | vf_eq2_t *eq2; |
| 245 | mp_image_t *dst; |
| 246 | unsigned long img_n,img_c; |
| 247 | |
| 248 | eq2 = vf->priv; |
| 249 | |
| 250 | if ((eq2->buf_w[0] != src->w) || (eq2->buf_h[0] != src->h)) { |
| 251 | eq2->buf_w[0] = src->w; |
| 252 | eq2->buf_h[0] = src->h; |
| 253 | eq2->buf_w[1] = eq2->buf_w[2] = src->w >> src->chroma_x_shift; |
| 254 | eq2->buf_h[1] = eq2->buf_h[2] = src->h >> src->chroma_y_shift; |
| 255 | img_n = eq2->buf_w[0]*eq2->buf_h[0]; |
| 256 | if(src->num_planes>1){ |
| 257 | img_c = eq2->buf_w[1]*eq2->buf_h[1]; |
| 258 | eq2->buf[0] = realloc (eq2->buf[0], img_n + 2*img_c); |
| 259 | eq2->buf[1] = eq2->buf[0] + img_n; |
| 260 | eq2->buf[2] = eq2->buf[1] + img_c; |
| 261 | } else |
| 262 | eq2->buf[0] = realloc (eq2->buf[0], img_n); |
| 263 | } |
| 264 | |
| 265 | dst = ff_vf_get_image (vf->next, src->imgfmt, MP_IMGTYPE_EXPORT, 0, src->w, src->h); |
| 266 | |
| 267 | for (i = 0; i < ((src->num_planes>1)?3:1); i++) { |
| 268 | if (eq2->param[i].adjust) { |
| 269 | dst->planes[i] = eq2->buf[i]; |
| 270 | dst->stride[i] = eq2->buf_w[i]; |
| 271 | |
| 272 | eq2->param[i].adjust (&eq2->param[i], dst->planes[i], src->planes[i], |
| 273 | eq2->buf_w[i], eq2->buf_h[i], dst->stride[i], src->stride[i]); |
| 274 | } |
| 275 | else { |
| 276 | dst->planes[i] = src->planes[i]; |
| 277 | dst->stride[i] = src->stride[i]; |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | return ff_vf_next_put_image (vf, dst, pts); |
| 282 | } |
| 283 | |
| 284 | static |
| 285 | void check_values (eq2_param_t *par) |
| 286 | { |
| 287 | /* yuck! floating point comparisons... */ |
| 288 | |
| 289 | if ((par->c == 1.0) && (par->b == 0.0) && (par->g == 1.0)) { |
| 290 | par->adjust = NULL; |
| 291 | } |
| 292 | #if HAVE_MMX && HAVE_6REGS |
| 293 | else if (par->g == 1.0 && ff_gCpuCaps.hasMMX) { |
| 294 | par->adjust = &affine_1d_MMX; |
| 295 | } |
| 296 | #endif |
| 297 | else { |
| 298 | par->adjust = &apply_lut; |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | static |
| 303 | void print_values (vf_eq2_t *eq2) |
| 304 | { |
| 305 | ff_mp_msg (MSGT_VFILTER, MSGL_V, "vf_eq2: c=%.2f b=%.2f g=%.4f s=%.2f \n", |
| 306 | eq2->contrast, eq2->brightness, eq2->gamma, eq2->saturation |
| 307 | ); |
| 308 | } |
| 309 | |
| 310 | static |
| 311 | void set_contrast (vf_eq2_t *eq2, double c) |
| 312 | { |
| 313 | eq2->contrast = c; |
| 314 | eq2->param[0].c = c; |
| 315 | eq2->param[0].lut_clean = 0; |
| 316 | check_values (&eq2->param[0]); |
| 317 | print_values (eq2); |
| 318 | } |
| 319 | |
| 320 | static |
| 321 | void set_brightness (vf_eq2_t *eq2, double b) |
| 322 | { |
| 323 | eq2->brightness = b; |
| 324 | eq2->param[0].b = b; |
| 325 | eq2->param[0].lut_clean = 0; |
| 326 | check_values (&eq2->param[0]); |
| 327 | print_values (eq2); |
| 328 | } |
| 329 | |
| 330 | static |
| 331 | void set_gamma (vf_eq2_t *eq2, double g) |
| 332 | { |
| 333 | eq2->gamma = g; |
| 334 | |
| 335 | eq2->param[0].g = eq2->gamma * eq2->ggamma; |
| 336 | eq2->param[1].g = sqrt (eq2->bgamma / eq2->ggamma); |
| 337 | eq2->param[2].g = sqrt (eq2->rgamma / eq2->ggamma); |
| 338 | eq2->param[0].w = eq2->param[1].w = eq2->param[2].w = eq2->gamma_weight; |
| 339 | |
| 340 | eq2->param[0].lut_clean = 0; |
| 341 | eq2->param[1].lut_clean = 0; |
| 342 | eq2->param[2].lut_clean = 0; |
| 343 | |
| 344 | check_values (&eq2->param[0]); |
| 345 | check_values (&eq2->param[1]); |
| 346 | check_values (&eq2->param[2]); |
| 347 | |
| 348 | print_values (eq2); |
| 349 | } |
| 350 | |
| 351 | static |
| 352 | void set_saturation (vf_eq2_t *eq2, double s) |
| 353 | { |
| 354 | eq2->saturation = s; |
| 355 | |
| 356 | eq2->param[1].c = s; |
| 357 | eq2->param[2].c = s; |
| 358 | |
| 359 | eq2->param[1].lut_clean = 0; |
| 360 | eq2->param[2].lut_clean = 0; |
| 361 | |
| 362 | check_values (&eq2->param[1]); |
| 363 | check_values (&eq2->param[2]); |
| 364 | |
| 365 | print_values (eq2); |
| 366 | } |
| 367 | |
| 368 | static |
| 369 | int control (vf_instance_t *vf, int request, void *data) |
| 370 | { |
| 371 | vf_equalizer_t *eq; |
| 372 | |
| 373 | switch (request) { |
| 374 | case VFCTRL_SET_EQUALIZER: |
| 375 | eq = (vf_equalizer_t *) data; |
| 376 | |
| 377 | if (strcmp (eq->item, "gamma") == 0) { |
| 378 | set_gamma (vf->priv, exp (log (8.0) * eq->value / 100.0)); |
| 379 | return CONTROL_TRUE; |
| 380 | } |
| 381 | else if (strcmp (eq->item, "contrast") == 0) { |
| 382 | set_contrast (vf->priv, (1.0 / 100.0) * (eq->value + 100)); |
| 383 | return CONTROL_TRUE; |
| 384 | } |
| 385 | else if (strcmp (eq->item, "brightness") == 0) { |
| 386 | set_brightness (vf->priv, (1.0 / 100.0) * eq->value); |
| 387 | return CONTROL_TRUE; |
| 388 | } |
| 389 | else if (strcmp (eq->item, "saturation") == 0) { |
| 390 | set_saturation (vf->priv, (double) (eq->value + 100) / 100.0); |
| 391 | return CONTROL_TRUE; |
| 392 | } |
| 393 | break; |
| 394 | |
| 395 | case VFCTRL_GET_EQUALIZER: |
| 396 | eq = (vf_equalizer_t *) data; |
| 397 | if (strcmp (eq->item, "gamma") == 0) { |
| 398 | eq->value = (int) (100.0 * log (vf->priv->gamma) / log (8.0)); |
| 399 | return CONTROL_TRUE; |
| 400 | } |
| 401 | else if (strcmp (eq->item, "contrast") == 0) { |
| 402 | eq->value = (int) (100.0 * vf->priv->contrast) - 100; |
| 403 | return CONTROL_TRUE; |
| 404 | } |
| 405 | else if (strcmp (eq->item, "brightness") == 0) { |
| 406 | eq->value = (int) (100.0 * vf->priv->brightness); |
| 407 | return CONTROL_TRUE; |
| 408 | } |
| 409 | else if (strcmp (eq->item, "saturation") == 0) { |
| 410 | eq->value = (int) (100.0 * vf->priv->saturation) - 100; |
| 411 | return CONTROL_TRUE; |
| 412 | } |
| 413 | break; |
| 414 | } |
| 415 | |
| 416 | return ff_vf_next_control (vf, request, data); |
| 417 | } |
| 418 | |
| 419 | static |
| 420 | int query_format (vf_instance_t *vf, unsigned fmt) |
| 421 | { |
| 422 | switch (fmt) { |
| 423 | case IMGFMT_YVU9: |
| 424 | case IMGFMT_IF09: |
| 425 | case IMGFMT_YV12: |
| 426 | case IMGFMT_I420: |
| 427 | case IMGFMT_IYUV: |
| 428 | case IMGFMT_Y800: |
| 429 | case IMGFMT_Y8: |
| 430 | case IMGFMT_444P: |
| 431 | case IMGFMT_422P: |
| 432 | case IMGFMT_411P: |
| 433 | return ff_vf_next_query_format (vf, fmt); |
| 434 | } |
| 435 | |
| 436 | return 0; |
| 437 | } |
| 438 | |
| 439 | static |
| 440 | void uninit (vf_instance_t *vf) |
| 441 | { |
| 442 | if (vf->priv) { |
| 443 | free (vf->priv->buf[0]); |
| 444 | free (vf->priv); |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | static |
| 449 | int vf_open(vf_instance_t *vf, char *args) |
| 450 | { |
| 451 | unsigned i; |
| 452 | vf_eq2_t *eq2; |
| 453 | double par[8]; |
| 454 | |
| 455 | vf->control = control; |
| 456 | vf->query_format = query_format; |
| 457 | vf->put_image = put_image; |
| 458 | vf->uninit = uninit; |
| 459 | |
| 460 | vf->priv = malloc (sizeof (vf_eq2_t)); |
| 461 | eq2 = vf->priv; |
| 462 | |
| 463 | for (i = 0; i < 3; i++) { |
| 464 | eq2->buf[i] = NULL; |
| 465 | eq2->buf_w[i] = 0; |
| 466 | eq2->buf_h[i] = 0; |
| 467 | |
| 468 | eq2->param[i].adjust = NULL; |
| 469 | eq2->param[i].c = 1.0; |
| 470 | eq2->param[i].b = 0.0; |
| 471 | eq2->param[i].g = 1.0; |
| 472 | eq2->param[i].lut_clean = 0; |
| 473 | } |
| 474 | |
| 475 | eq2->contrast = 1.0; |
| 476 | eq2->brightness = 0.0; |
| 477 | eq2->saturation = 1.0; |
| 478 | |
| 479 | eq2->gamma = 1.0; |
| 480 | eq2->gamma_weight = 1.0; |
| 481 | eq2->rgamma = 1.0; |
| 482 | eq2->ggamma = 1.0; |
| 483 | eq2->bgamma = 1.0; |
| 484 | |
| 485 | if (args) { |
| 486 | par[0] = 1.0; |
| 487 | par[1] = 1.0; |
| 488 | par[2] = 0.0; |
| 489 | par[3] = 1.0; |
| 490 | par[4] = 1.0; |
| 491 | par[5] = 1.0; |
| 492 | par[6] = 1.0; |
| 493 | par[7] = 1.0; |
| 494 | sscanf (args, "%lf:%lf:%lf:%lf:%lf:%lf:%lf:%lf", |
| 495 | par, par + 1, par + 2, par + 3, par + 4, par + 5, par + 6, par + 7 |
| 496 | ); |
| 497 | |
| 498 | eq2->rgamma = par[4]; |
| 499 | eq2->ggamma = par[5]; |
| 500 | eq2->bgamma = par[6]; |
| 501 | eq2->gamma_weight = par[7]; |
| 502 | |
| 503 | set_gamma (eq2, par[0]); |
| 504 | set_contrast (eq2, par[1]); |
| 505 | set_brightness (eq2, par[2]); |
| 506 | set_saturation (eq2, par[3]); |
| 507 | } |
| 508 | |
| 509 | return 1; |
| 510 | } |
| 511 | |
| 512 | const vf_info_t ff_vf_info_eq2 = { |
| 513 | "Software equalizer", |
| 514 | "eq2", |
| 515 | "Hampa Hug, Daniel Moreno, Richard Felker", |
| 516 | "", |
| 517 | &vf_open, |
| 518 | NULL |
| 519 | }; |