Libav
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00001 /* 00002 * Misc image conversion routines 00003 * Copyright (c) 2001, 2002, 2003 Fabrice Bellard 00004 * 00005 * This file is part of FFmpeg. 00006 * 00007 * FFmpeg is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU Lesser General Public 00009 * License as published by the Free Software Foundation; either 00010 * version 2.1 of the License, or (at your option) any later version. 00011 * 00012 * FFmpeg is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 * Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with FFmpeg; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00020 */ 00021 00027 /* TODO: 00028 * - write 'ffimg' program to test all the image related stuff 00029 * - move all api to slice based system 00030 * - integrate deinterlacing, postprocessing and scaling in the conversion process 00031 */ 00032 00033 #include "avcodec.h" 00034 #include "dsputil.h" 00035 #include "colorspace.h" 00036 #include "internal.h" 00037 #include "imgconvert.h" 00038 #include "libavutil/pixdesc.h" 00039 00040 #if HAVE_MMX 00041 #include "x86/mmx.h" 00042 #include "x86/dsputil_mmx.h" 00043 #endif 00044 00045 #define xglue(x, y) x ## y 00046 #define glue(x, y) xglue(x, y) 00047 00048 #define FF_COLOR_RGB 0 00049 #define FF_COLOR_GRAY 1 00050 #define FF_COLOR_YUV 2 00051 #define FF_COLOR_YUV_JPEG 3 00053 #define FF_PIXEL_PLANAR 0 00054 #define FF_PIXEL_PACKED 1 00055 #define FF_PIXEL_PALETTE 2 00057 typedef struct PixFmtInfo { 00058 uint8_t nb_channels; 00059 uint8_t color_type; 00060 uint8_t pixel_type; 00061 uint8_t is_alpha : 1; 00062 uint8_t depth; 00063 } PixFmtInfo; 00064 00065 /* this table gives more information about formats */ 00066 static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = { 00067 /* YUV formats */ 00068 [PIX_FMT_YUV420P] = { 00069 .nb_channels = 3, 00070 .color_type = FF_COLOR_YUV, 00071 .pixel_type = FF_PIXEL_PLANAR, 00072 .depth = 8, 00073 }, 00074 [PIX_FMT_YUV422P] = { 00075 .nb_channels = 3, 00076 .color_type = FF_COLOR_YUV, 00077 .pixel_type = FF_PIXEL_PLANAR, 00078 .depth = 8, 00079 }, 00080 [PIX_FMT_YUV444P] = { 00081 .nb_channels = 3, 00082 .color_type = FF_COLOR_YUV, 00083 .pixel_type = FF_PIXEL_PLANAR, 00084 .depth = 8, 00085 }, 00086 [PIX_FMT_YUYV422] = { 00087 .nb_channels = 1, 00088 .color_type = FF_COLOR_YUV, 00089 .pixel_type = FF_PIXEL_PACKED, 00090 .depth = 8, 00091 }, 00092 [PIX_FMT_UYVY422] = { 00093 .nb_channels = 1, 00094 .color_type = FF_COLOR_YUV, 00095 .pixel_type = FF_PIXEL_PACKED, 00096 .depth = 8, 00097 }, 00098 [PIX_FMT_YUV410P] = { 00099 .nb_channels = 3, 00100 .color_type = FF_COLOR_YUV, 00101 .pixel_type = FF_PIXEL_PLANAR, 00102 .depth = 8, 00103 }, 00104 [PIX_FMT_YUV411P] = { 00105 .nb_channels = 3, 00106 .color_type = FF_COLOR_YUV, 00107 .pixel_type = FF_PIXEL_PLANAR, 00108 .depth = 8, 00109 }, 00110 [PIX_FMT_YUV440P] = { 00111 .nb_channels = 3, 00112 .color_type = FF_COLOR_YUV, 00113 .pixel_type = FF_PIXEL_PLANAR, 00114 .depth = 8, 00115 }, 00116 [PIX_FMT_YUV420P16LE] = { 00117 .nb_channels = 3, 00118 .color_type = FF_COLOR_YUV, 00119 .pixel_type = FF_PIXEL_PLANAR, 00120 .depth = 16, 00121 }, 00122 [PIX_FMT_YUV422P16LE] = { 00123 .nb_channels = 3, 00124 .color_type = FF_COLOR_YUV, 00125 .pixel_type = FF_PIXEL_PLANAR, 00126 .depth = 16, 00127 }, 00128 [PIX_FMT_YUV444P16LE] = { 00129 .nb_channels = 3, 00130 .color_type = FF_COLOR_YUV, 00131 .pixel_type = FF_PIXEL_PLANAR, 00132 .depth = 16, 00133 }, 00134 [PIX_FMT_YUV420P16BE] = { 00135 .nb_channels = 3, 00136 .color_type = FF_COLOR_YUV, 00137 .pixel_type = FF_PIXEL_PLANAR, 00138 .depth = 16, 00139 }, 00140 [PIX_FMT_YUV422P16BE] = { 00141 .nb_channels = 3, 00142 .color_type = FF_COLOR_YUV, 00143 .pixel_type = FF_PIXEL_PLANAR, 00144 .depth = 16, 00145 }, 00146 [PIX_FMT_YUV444P16BE] = { 00147 .nb_channels = 3, 00148 .color_type = FF_COLOR_YUV, 00149 .pixel_type = FF_PIXEL_PLANAR, 00150 .depth = 16, 00151 }, 00152 00153 00154 /* YUV formats with alpha plane */ 00155 [PIX_FMT_YUVA420P] = { 00156 .nb_channels = 4, 00157 .color_type = FF_COLOR_YUV, 00158 .pixel_type = FF_PIXEL_PLANAR, 00159 .depth = 8, 00160 }, 00161 00162 /* JPEG YUV */ 00163 [PIX_FMT_YUVJ420P] = { 00164 .nb_channels = 3, 00165 .color_type = FF_COLOR_YUV_JPEG, 00166 .pixel_type = FF_PIXEL_PLANAR, 00167 .depth = 8, 00168 }, 00169 [PIX_FMT_YUVJ422P] = { 00170 .nb_channels = 3, 00171 .color_type = FF_COLOR_YUV_JPEG, 00172 .pixel_type = FF_PIXEL_PLANAR, 00173 .depth = 8, 00174 }, 00175 [PIX_FMT_YUVJ444P] = { 00176 .nb_channels = 3, 00177 .color_type = FF_COLOR_YUV_JPEG, 00178 .pixel_type = FF_PIXEL_PLANAR, 00179 .depth = 8, 00180 }, 00181 [PIX_FMT_YUVJ440P] = { 00182 .nb_channels = 3, 00183 .color_type = FF_COLOR_YUV_JPEG, 00184 .pixel_type = FF_PIXEL_PLANAR, 00185 .depth = 8, 00186 }, 00187 00188 /* RGB formats */ 00189 [PIX_FMT_RGB24] = { 00190 .nb_channels = 3, 00191 .color_type = FF_COLOR_RGB, 00192 .pixel_type = FF_PIXEL_PACKED, 00193 .depth = 8, 00194 }, 00195 [PIX_FMT_BGR24] = { 00196 .nb_channels = 3, 00197 .color_type = FF_COLOR_RGB, 00198 .pixel_type = FF_PIXEL_PACKED, 00199 .depth = 8, 00200 }, 00201 [PIX_FMT_ARGB] = { 00202 .nb_channels = 4, .is_alpha = 1, 00203 .color_type = FF_COLOR_RGB, 00204 .pixel_type = FF_PIXEL_PACKED, 00205 .depth = 8, 00206 }, 00207 [PIX_FMT_RGB48BE] = { 00208 .nb_channels = 3, 00209 .color_type = FF_COLOR_RGB, 00210 .pixel_type = FF_PIXEL_PACKED, 00211 .depth = 16, 00212 }, 00213 [PIX_FMT_RGB48LE] = { 00214 .nb_channels = 3, 00215 .color_type = FF_COLOR_RGB, 00216 .pixel_type = FF_PIXEL_PACKED, 00217 .depth = 16, 00218 }, 00219 [PIX_FMT_RGB565BE] = { 00220 .nb_channels = 3, 00221 .color_type = FF_COLOR_RGB, 00222 .pixel_type = FF_PIXEL_PACKED, 00223 .depth = 5, 00224 }, 00225 [PIX_FMT_RGB565LE] = { 00226 .nb_channels = 3, 00227 .color_type = FF_COLOR_RGB, 00228 .pixel_type = FF_PIXEL_PACKED, 00229 .depth = 5, 00230 }, 00231 [PIX_FMT_RGB555BE] = { 00232 .nb_channels = 3, 00233 .color_type = FF_COLOR_RGB, 00234 .pixel_type = FF_PIXEL_PACKED, 00235 .depth = 5, 00236 }, 00237 [PIX_FMT_RGB555LE] = { 00238 .nb_channels = 3, 00239 .color_type = FF_COLOR_RGB, 00240 .pixel_type = FF_PIXEL_PACKED, 00241 .depth = 5, 00242 }, 00243 [PIX_FMT_RGB444BE] = { 00244 .nb_channels = 3, 00245 .color_type = FF_COLOR_RGB, 00246 .pixel_type = FF_PIXEL_PACKED, 00247 .depth = 4, 00248 }, 00249 [PIX_FMT_RGB444LE] = { 00250 .nb_channels = 3, 00251 .color_type = FF_COLOR_RGB, 00252 .pixel_type = FF_PIXEL_PACKED, 00253 .depth = 4, 00254 }, 00255 00256 /* gray / mono formats */ 00257 [PIX_FMT_GRAY16BE] = { 00258 .nb_channels = 1, 00259 .color_type = FF_COLOR_GRAY, 00260 .pixel_type = FF_PIXEL_PLANAR, 00261 .depth = 16, 00262 }, 00263 [PIX_FMT_GRAY16LE] = { 00264 .nb_channels = 1, 00265 .color_type = FF_COLOR_GRAY, 00266 .pixel_type = FF_PIXEL_PLANAR, 00267 .depth = 16, 00268 }, 00269 [PIX_FMT_GRAY8] = { 00270 .nb_channels = 1, 00271 .color_type = FF_COLOR_GRAY, 00272 .pixel_type = FF_PIXEL_PLANAR, 00273 .depth = 8, 00274 }, 00275 [PIX_FMT_MONOWHITE] = { 00276 .nb_channels = 1, 00277 .color_type = FF_COLOR_GRAY, 00278 .pixel_type = FF_PIXEL_PLANAR, 00279 .depth = 1, 00280 }, 00281 [PIX_FMT_MONOBLACK] = { 00282 .nb_channels = 1, 00283 .color_type = FF_COLOR_GRAY, 00284 .pixel_type = FF_PIXEL_PLANAR, 00285 .depth = 1, 00286 }, 00287 00288 /* paletted formats */ 00289 [PIX_FMT_PAL8] = { 00290 .nb_channels = 4, .is_alpha = 1, 00291 .color_type = FF_COLOR_RGB, 00292 .pixel_type = FF_PIXEL_PALETTE, 00293 .depth = 8, 00294 }, 00295 [PIX_FMT_UYYVYY411] = { 00296 .nb_channels = 1, 00297 .color_type = FF_COLOR_YUV, 00298 .pixel_type = FF_PIXEL_PACKED, 00299 .depth = 8, 00300 }, 00301 [PIX_FMT_ABGR] = { 00302 .nb_channels = 4, .is_alpha = 1, 00303 .color_type = FF_COLOR_RGB, 00304 .pixel_type = FF_PIXEL_PACKED, 00305 .depth = 8, 00306 }, 00307 [PIX_FMT_BGR565BE] = { 00308 .nb_channels = 3, 00309 .color_type = FF_COLOR_RGB, 00310 .pixel_type = FF_PIXEL_PACKED, 00311 .depth = 5, 00312 }, 00313 [PIX_FMT_BGR565LE] = { 00314 .nb_channels = 3, 00315 .color_type = FF_COLOR_RGB, 00316 .pixel_type = FF_PIXEL_PACKED, 00317 .depth = 5, 00318 }, 00319 [PIX_FMT_BGR555BE] = { 00320 .nb_channels = 3, 00321 .color_type = FF_COLOR_RGB, 00322 .pixel_type = FF_PIXEL_PACKED, 00323 .depth = 5, 00324 }, 00325 [PIX_FMT_BGR555LE] = { 00326 .nb_channels = 3, 00327 .color_type = FF_COLOR_RGB, 00328 .pixel_type = FF_PIXEL_PACKED, 00329 .depth = 5, 00330 }, 00331 [PIX_FMT_BGR444BE] = { 00332 .nb_channels = 3, 00333 .color_type = FF_COLOR_RGB, 00334 .pixel_type = FF_PIXEL_PACKED, 00335 .depth = 4, 00336 }, 00337 [PIX_FMT_BGR444LE] = { 00338 .nb_channels = 3, 00339 .color_type = FF_COLOR_RGB, 00340 .pixel_type = FF_PIXEL_PACKED, 00341 .depth = 4, 00342 }, 00343 [PIX_FMT_RGB8] = { 00344 .nb_channels = 1, 00345 .color_type = FF_COLOR_RGB, 00346 .pixel_type = FF_PIXEL_PACKED, 00347 .depth = 8, 00348 }, 00349 [PIX_FMT_RGB4] = { 00350 .nb_channels = 1, 00351 .color_type = FF_COLOR_RGB, 00352 .pixel_type = FF_PIXEL_PACKED, 00353 .depth = 4, 00354 }, 00355 [PIX_FMT_RGB4_BYTE] = { 00356 .nb_channels = 1, 00357 .color_type = FF_COLOR_RGB, 00358 .pixel_type = FF_PIXEL_PACKED, 00359 .depth = 8, 00360 }, 00361 [PIX_FMT_BGR8] = { 00362 .nb_channels = 1, 00363 .color_type = FF_COLOR_RGB, 00364 .pixel_type = FF_PIXEL_PACKED, 00365 .depth = 8, 00366 }, 00367 [PIX_FMT_BGR4] = { 00368 .nb_channels = 1, 00369 .color_type = FF_COLOR_RGB, 00370 .pixel_type = FF_PIXEL_PACKED, 00371 .depth = 4, 00372 }, 00373 [PIX_FMT_BGR4_BYTE] = { 00374 .nb_channels = 1, 00375 .color_type = FF_COLOR_RGB, 00376 .pixel_type = FF_PIXEL_PACKED, 00377 .depth = 8, 00378 }, 00379 [PIX_FMT_NV12] = { 00380 .nb_channels = 2, 00381 .color_type = FF_COLOR_YUV, 00382 .pixel_type = FF_PIXEL_PLANAR, 00383 .depth = 8, 00384 }, 00385 [PIX_FMT_NV21] = { 00386 .nb_channels = 2, 00387 .color_type = FF_COLOR_YUV, 00388 .pixel_type = FF_PIXEL_PLANAR, 00389 .depth = 8, 00390 }, 00391 00392 [PIX_FMT_BGRA] = { 00393 .nb_channels = 4, .is_alpha = 1, 00394 .color_type = FF_COLOR_RGB, 00395 .pixel_type = FF_PIXEL_PACKED, 00396 .depth = 8, 00397 }, 00398 [PIX_FMT_RGBA] = { 00399 .nb_channels = 4, .is_alpha = 1, 00400 .color_type = FF_COLOR_RGB, 00401 .pixel_type = FF_PIXEL_PACKED, 00402 .depth = 8, 00403 }, 00404 }; 00405 00406 void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift) 00407 { 00408 *h_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w; 00409 *v_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h; 00410 } 00411 00412 const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt) 00413 { 00414 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB) 00415 return NULL; 00416 else 00417 return av_pix_fmt_descriptors[pix_fmt].name; 00418 } 00419 00420 #if LIBAVCODEC_VERSION_MAJOR < 53 00421 enum PixelFormat avcodec_get_pix_fmt(const char *name) 00422 { 00423 return av_get_pix_fmt(name); 00424 } 00425 #endif 00426 00427 void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt) 00428 { 00429 /* print header */ 00430 if (pix_fmt < 0) 00431 snprintf (buf, buf_size, 00432 "name " " nb_channels" " depth" " is_alpha" 00433 ); 00434 else{ 00435 PixFmtInfo info= pix_fmt_info[pix_fmt]; 00436 00437 char is_alpha_char= info.is_alpha ? 'y' : 'n'; 00438 00439 snprintf (buf, buf_size, 00440 "%-11s %5d %9d %6c", 00441 av_pix_fmt_descriptors[pix_fmt].name, 00442 info.nb_channels, 00443 info.depth, 00444 is_alpha_char 00445 ); 00446 } 00447 } 00448 00449 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt) 00450 { 00451 return av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL; 00452 } 00453 00454 int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){ 00455 int i; 00456 00457 for(i=0; i<256; i++){ 00458 int r,g,b; 00459 00460 switch(pix_fmt) { 00461 case PIX_FMT_RGB8: 00462 r= (i>>5 )*36; 00463 g= ((i>>2)&7)*36; 00464 b= (i&3 )*85; 00465 break; 00466 case PIX_FMT_BGR8: 00467 b= (i>>6 )*85; 00468 g= ((i>>3)&7)*36; 00469 r= (i&7 )*36; 00470 break; 00471 case PIX_FMT_RGB4_BYTE: 00472 r= (i>>3 )*255; 00473 g= ((i>>1)&3)*85; 00474 b= (i&1 )*255; 00475 break; 00476 case PIX_FMT_BGR4_BYTE: 00477 b= (i>>3 )*255; 00478 g= ((i>>1)&3)*85; 00479 r= (i&1 )*255; 00480 break; 00481 case PIX_FMT_GRAY8: 00482 r=b=g= i; 00483 break; 00484 default: 00485 return -1; 00486 } 00487 pal[i] = b + (g<<8) + (r<<16); 00488 } 00489 00490 return 0; 00491 } 00492 00493 int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width) 00494 { 00495 int i; 00496 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; 00497 int max_plane_step [4]; 00498 int max_plane_step_comp[4]; 00499 00500 memset(picture->linesize, 0, sizeof(picture->linesize)); 00501 00502 if (desc->flags & PIX_FMT_HWACCEL) 00503 return -1; 00504 00505 if (desc->flags & PIX_FMT_BITSTREAM) { 00506 picture->linesize[0] = (width * (desc->comp[0].step_minus1+1) + 7) >> 3; 00507 return 0; 00508 } 00509 00510 memset(max_plane_step , 0, sizeof(max_plane_step )); 00511 memset(max_plane_step_comp, 0, sizeof(max_plane_step_comp)); 00512 for (i = 0; i < 4; i++) { 00513 const AVComponentDescriptor *comp = &(desc->comp[i]); 00514 if ((comp->step_minus1+1) > max_plane_step[comp->plane]) { 00515 max_plane_step [comp->plane] = comp->step_minus1+1; 00516 max_plane_step_comp[comp->plane] = i; 00517 } 00518 } 00519 00520 for (i = 0; i < 4; i++) { 00521 int s = (max_plane_step_comp[i] == 1 || max_plane_step_comp[i] == 2) ? desc->log2_chroma_w : 0; 00522 picture->linesize[i] = max_plane_step[i] * (((width + (1 << s) - 1)) >> s); 00523 } 00524 00525 return 0; 00526 } 00527 00528 int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt, 00529 int height) 00530 { 00531 int size, h2, size2; 00532 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; 00533 00534 size = picture->linesize[0] * height; 00535 switch(pix_fmt) { 00536 case PIX_FMT_YUV420P: 00537 case PIX_FMT_YUV422P: 00538 case PIX_FMT_YUV444P: 00539 case PIX_FMT_YUV410P: 00540 case PIX_FMT_YUV411P: 00541 case PIX_FMT_YUV440P: 00542 case PIX_FMT_YUVJ420P: 00543 case PIX_FMT_YUVJ422P: 00544 case PIX_FMT_YUVJ444P: 00545 case PIX_FMT_YUVJ440P: 00546 case PIX_FMT_YUV420P16LE: 00547 case PIX_FMT_YUV422P16LE: 00548 case PIX_FMT_YUV444P16LE: 00549 case PIX_FMT_YUV420P16BE: 00550 case PIX_FMT_YUV422P16BE: 00551 case PIX_FMT_YUV444P16BE: 00552 h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h; 00553 size2 = picture->linesize[1] * h2; 00554 picture->data[0] = ptr; 00555 picture->data[1] = picture->data[0] + size; 00556 picture->data[2] = picture->data[1] + size2; 00557 picture->data[3] = NULL; 00558 return size + 2 * size2; 00559 case PIX_FMT_YUVA420P: 00560 h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h; 00561 size2 = picture->linesize[1] * h2; 00562 picture->data[0] = ptr; 00563 picture->data[1] = picture->data[0] + size; 00564 picture->data[2] = picture->data[1] + size2; 00565 picture->data[3] = picture->data[1] + size2 + size2; 00566 return 2 * size + 2 * size2; 00567 case PIX_FMT_NV12: 00568 case PIX_FMT_NV21: 00569 h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h; 00570 size2 = picture->linesize[1] * h2; 00571 picture->data[0] = ptr; 00572 picture->data[1] = picture->data[0] + size; 00573 picture->data[2] = NULL; 00574 picture->data[3] = NULL; 00575 return size + size2; 00576 case PIX_FMT_RGB24: 00577 case PIX_FMT_BGR24: 00578 case PIX_FMT_ARGB: 00579 case PIX_FMT_ABGR: 00580 case PIX_FMT_RGBA: 00581 case PIX_FMT_BGRA: 00582 case PIX_FMT_RGB48BE: 00583 case PIX_FMT_RGB48LE: 00584 case PIX_FMT_GRAY16BE: 00585 case PIX_FMT_GRAY16LE: 00586 case PIX_FMT_BGR444BE: 00587 case PIX_FMT_BGR444LE: 00588 case PIX_FMT_BGR555BE: 00589 case PIX_FMT_BGR555LE: 00590 case PIX_FMT_BGR565BE: 00591 case PIX_FMT_BGR565LE: 00592 case PIX_FMT_RGB444BE: 00593 case PIX_FMT_RGB444LE: 00594 case PIX_FMT_RGB555BE: 00595 case PIX_FMT_RGB555LE: 00596 case PIX_FMT_RGB565BE: 00597 case PIX_FMT_RGB565LE: 00598 case PIX_FMT_YUYV422: 00599 case PIX_FMT_UYVY422: 00600 case PIX_FMT_UYYVYY411: 00601 case PIX_FMT_RGB4: 00602 case PIX_FMT_BGR4: 00603 case PIX_FMT_MONOWHITE: 00604 case PIX_FMT_MONOBLACK: 00605 case PIX_FMT_Y400A: 00606 picture->data[0] = ptr; 00607 picture->data[1] = NULL; 00608 picture->data[2] = NULL; 00609 picture->data[3] = NULL; 00610 return size; 00611 case PIX_FMT_PAL8: 00612 case PIX_FMT_RGB8: 00613 case PIX_FMT_BGR8: 00614 case PIX_FMT_RGB4_BYTE: 00615 case PIX_FMT_BGR4_BYTE: 00616 case PIX_FMT_GRAY8: 00617 size2 = (size + 3) & ~3; 00618 picture->data[0] = ptr; 00619 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */ 00620 picture->data[2] = NULL; 00621 picture->data[3] = NULL; 00622 return size2 + 256 * 4; 00623 default: 00624 picture->data[0] = NULL; 00625 picture->data[1] = NULL; 00626 picture->data[2] = NULL; 00627 picture->data[3] = NULL; 00628 return -1; 00629 } 00630 } 00631 00632 int avpicture_fill(AVPicture *picture, uint8_t *ptr, 00633 enum PixelFormat pix_fmt, int width, int height) 00634 { 00635 00636 if(avcodec_check_dimensions(NULL, width, height)) 00637 return -1; 00638 00639 if (ff_fill_linesize(picture, pix_fmt, width)) 00640 return -1; 00641 00642 return ff_fill_pointer(picture, ptr, pix_fmt, height); 00643 } 00644 00645 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height, 00646 unsigned char *dest, int dest_size) 00647 { 00648 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt]; 00649 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; 00650 int i, j, w, ow, h, oh, data_planes; 00651 const unsigned char* s; 00652 int size = avpicture_get_size(pix_fmt, width, height); 00653 00654 if (size > dest_size || size < 0) 00655 return -1; 00656 00657 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) { 00658 if (pix_fmt == PIX_FMT_YUYV422 || 00659 pix_fmt == PIX_FMT_UYVY422 || 00660 pix_fmt == PIX_FMT_BGR565BE || 00661 pix_fmt == PIX_FMT_BGR565LE || 00662 pix_fmt == PIX_FMT_BGR555BE || 00663 pix_fmt == PIX_FMT_BGR555LE || 00664 pix_fmt == PIX_FMT_BGR444BE || 00665 pix_fmt == PIX_FMT_BGR444LE || 00666 pix_fmt == PIX_FMT_RGB565BE || 00667 pix_fmt == PIX_FMT_RGB565LE || 00668 pix_fmt == PIX_FMT_RGB555BE || 00669 pix_fmt == PIX_FMT_RGB555LE || 00670 pix_fmt == PIX_FMT_RGB444BE || 00671 pix_fmt == PIX_FMT_RGB444LE) 00672 w = width * 2; 00673 else if (pix_fmt == PIX_FMT_UYYVYY411) 00674 w = width + width/2; 00675 else if (pix_fmt == PIX_FMT_PAL8) 00676 w = width; 00677 else 00678 w = width * (pf->depth * pf->nb_channels / 8); 00679 00680 data_planes = 1; 00681 h = height; 00682 } else { 00683 data_planes = pf->nb_channels; 00684 w = (width*pf->depth + 7)/8; 00685 h = height; 00686 } 00687 00688 ow = w; 00689 oh = h; 00690 00691 for (i=0; i<data_planes; i++) { 00692 if (i == 1) { 00693 w = (- ((-width) >> desc->log2_chroma_w) * pf->depth + 7) / 8; 00694 h = -((-height) >> desc->log2_chroma_h); 00695 if (pix_fmt == PIX_FMT_NV12 || pix_fmt == PIX_FMT_NV21) 00696 w <<= 1; 00697 } else if (i == 3) { 00698 w = ow; 00699 h = oh; 00700 } 00701 s = src->data[i]; 00702 for(j=0; j<h; j++) { 00703 memcpy(dest, s, w); 00704 dest += w; 00705 s += src->linesize[i]; 00706 } 00707 } 00708 00709 if (pf->pixel_type == FF_PIXEL_PALETTE) 00710 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4); 00711 00712 return size; 00713 } 00714 00715 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height) 00716 { 00717 AVPicture dummy_pict; 00718 if(avcodec_check_dimensions(NULL, width, height)) 00719 return -1; 00720 switch (pix_fmt) { 00721 case PIX_FMT_RGB8: 00722 case PIX_FMT_BGR8: 00723 case PIX_FMT_RGB4_BYTE: 00724 case PIX_FMT_BGR4_BYTE: 00725 case PIX_FMT_GRAY8: 00726 // do not include palette for these pseudo-paletted formats 00727 return width * height; 00728 } 00729 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height); 00730 } 00731 00732 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt, 00733 int has_alpha) 00734 { 00735 const PixFmtInfo *pf, *ps; 00736 const AVPixFmtDescriptor *src_desc = &av_pix_fmt_descriptors[src_pix_fmt]; 00737 const AVPixFmtDescriptor *dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt]; 00738 int loss; 00739 00740 ps = &pix_fmt_info[src_pix_fmt]; 00741 00742 /* compute loss */ 00743 loss = 0; 00744 pf = &pix_fmt_info[dst_pix_fmt]; 00745 if (pf->depth < ps->depth || 00746 ((dst_pix_fmt == PIX_FMT_RGB555BE || dst_pix_fmt == PIX_FMT_RGB555LE || 00747 dst_pix_fmt == PIX_FMT_BGR555BE || dst_pix_fmt == PIX_FMT_BGR555LE) && 00748 (src_pix_fmt == PIX_FMT_RGB565BE || src_pix_fmt == PIX_FMT_RGB565LE || 00749 src_pix_fmt == PIX_FMT_BGR565BE || src_pix_fmt == PIX_FMT_BGR565LE))) 00750 loss |= FF_LOSS_DEPTH; 00751 if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w || 00752 dst_desc->log2_chroma_h > src_desc->log2_chroma_h) 00753 loss |= FF_LOSS_RESOLUTION; 00754 switch(pf->color_type) { 00755 case FF_COLOR_RGB: 00756 if (ps->color_type != FF_COLOR_RGB && 00757 ps->color_type != FF_COLOR_GRAY) 00758 loss |= FF_LOSS_COLORSPACE; 00759 break; 00760 case FF_COLOR_GRAY: 00761 if (ps->color_type != FF_COLOR_GRAY) 00762 loss |= FF_LOSS_COLORSPACE; 00763 break; 00764 case FF_COLOR_YUV: 00765 if (ps->color_type != FF_COLOR_YUV) 00766 loss |= FF_LOSS_COLORSPACE; 00767 break; 00768 case FF_COLOR_YUV_JPEG: 00769 if (ps->color_type != FF_COLOR_YUV_JPEG && 00770 ps->color_type != FF_COLOR_YUV && 00771 ps->color_type != FF_COLOR_GRAY) 00772 loss |= FF_LOSS_COLORSPACE; 00773 break; 00774 default: 00775 /* fail safe test */ 00776 if (ps->color_type != pf->color_type) 00777 loss |= FF_LOSS_COLORSPACE; 00778 break; 00779 } 00780 if (pf->color_type == FF_COLOR_GRAY && 00781 ps->color_type != FF_COLOR_GRAY) 00782 loss |= FF_LOSS_CHROMA; 00783 if (!pf->is_alpha && (ps->is_alpha && has_alpha)) 00784 loss |= FF_LOSS_ALPHA; 00785 if (pf->pixel_type == FF_PIXEL_PALETTE && 00786 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY)) 00787 loss |= FF_LOSS_COLORQUANT; 00788 return loss; 00789 } 00790 00791 static int avg_bits_per_pixel(enum PixelFormat pix_fmt) 00792 { 00793 int bits; 00794 const PixFmtInfo *pf; 00795 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; 00796 00797 pf = &pix_fmt_info[pix_fmt]; 00798 switch(pf->pixel_type) { 00799 case FF_PIXEL_PACKED: 00800 switch(pix_fmt) { 00801 case PIX_FMT_YUYV422: 00802 case PIX_FMT_UYVY422: 00803 case PIX_FMT_RGB565BE: 00804 case PIX_FMT_RGB565LE: 00805 case PIX_FMT_RGB555BE: 00806 case PIX_FMT_RGB555LE: 00807 case PIX_FMT_RGB444BE: 00808 case PIX_FMT_RGB444LE: 00809 case PIX_FMT_BGR565BE: 00810 case PIX_FMT_BGR565LE: 00811 case PIX_FMT_BGR555BE: 00812 case PIX_FMT_BGR555LE: 00813 case PIX_FMT_BGR444BE: 00814 case PIX_FMT_BGR444LE: 00815 bits = 16; 00816 break; 00817 case PIX_FMT_UYYVYY411: 00818 bits = 12; 00819 break; 00820 default: 00821 bits = pf->depth * pf->nb_channels; 00822 break; 00823 } 00824 break; 00825 case FF_PIXEL_PLANAR: 00826 if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) { 00827 bits = pf->depth * pf->nb_channels; 00828 } else { 00829 bits = pf->depth + ((2 * pf->depth) >> 00830 (desc->log2_chroma_w + desc->log2_chroma_h)); 00831 } 00832 break; 00833 case FF_PIXEL_PALETTE: 00834 bits = 8; 00835 break; 00836 default: 00837 bits = -1; 00838 break; 00839 } 00840 return bits; 00841 } 00842 00843 static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask, 00844 enum PixelFormat src_pix_fmt, 00845 int has_alpha, 00846 int loss_mask) 00847 { 00848 int dist, i, loss, min_dist; 00849 enum PixelFormat dst_pix_fmt; 00850 00851 /* find exact color match with smallest size */ 00852 dst_pix_fmt = PIX_FMT_NONE; 00853 min_dist = 0x7fffffff; 00854 for(i = 0;i < PIX_FMT_NB; i++) { 00855 if (pix_fmt_mask & (1ULL << i)) { 00856 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask; 00857 if (loss == 0) { 00858 dist = avg_bits_per_pixel(i); 00859 if (dist < min_dist) { 00860 min_dist = dist; 00861 dst_pix_fmt = i; 00862 } 00863 } 00864 } 00865 } 00866 return dst_pix_fmt; 00867 } 00868 00869 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt, 00870 int has_alpha, int *loss_ptr) 00871 { 00872 enum PixelFormat dst_pix_fmt; 00873 int loss_mask, i; 00874 static const int loss_mask_order[] = { 00875 ~0, /* no loss first */ 00876 ~FF_LOSS_ALPHA, 00877 ~FF_LOSS_RESOLUTION, 00878 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION), 00879 ~FF_LOSS_COLORQUANT, 00880 ~FF_LOSS_DEPTH, 00881 0, 00882 }; 00883 00884 /* try with successive loss */ 00885 i = 0; 00886 for(;;) { 00887 loss_mask = loss_mask_order[i++]; 00888 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt, 00889 has_alpha, loss_mask); 00890 if (dst_pix_fmt >= 0) 00891 goto found; 00892 if (loss_mask == 0) 00893 break; 00894 } 00895 return PIX_FMT_NONE; 00896 found: 00897 if (loss_ptr) 00898 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha); 00899 return dst_pix_fmt; 00900 } 00901 00902 void ff_img_copy_plane(uint8_t *dst, int dst_wrap, 00903 const uint8_t *src, int src_wrap, 00904 int width, int height) 00905 { 00906 if((!dst) || (!src)) 00907 return; 00908 for(;height > 0; height--) { 00909 memcpy(dst, src, width); 00910 dst += dst_wrap; 00911 src += src_wrap; 00912 } 00913 } 00914 00915 int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane) 00916 { 00917 int bits; 00918 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt]; 00919 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; 00920 00921 pf = &pix_fmt_info[pix_fmt]; 00922 switch(pf->pixel_type) { 00923 case FF_PIXEL_PACKED: 00924 switch(pix_fmt) { 00925 case PIX_FMT_YUYV422: 00926 case PIX_FMT_UYVY422: 00927 case PIX_FMT_RGB565BE: 00928 case PIX_FMT_RGB565LE: 00929 case PIX_FMT_RGB555BE: 00930 case PIX_FMT_RGB555LE: 00931 case PIX_FMT_RGB444BE: 00932 case PIX_FMT_RGB444LE: 00933 case PIX_FMT_BGR565BE: 00934 case PIX_FMT_BGR565LE: 00935 case PIX_FMT_BGR555BE: 00936 case PIX_FMT_BGR555LE: 00937 case PIX_FMT_BGR444BE: 00938 case PIX_FMT_BGR444LE: 00939 bits = 16; 00940 break; 00941 case PIX_FMT_UYYVYY411: 00942 bits = 12; 00943 break; 00944 default: 00945 bits = pf->depth * pf->nb_channels; 00946 break; 00947 } 00948 return (width * bits + 7) >> 3; 00949 break; 00950 case FF_PIXEL_PLANAR: 00951 if (plane == 1 || plane == 2) 00952 width= -((-width)>>desc->log2_chroma_w); 00953 00954 return (width * pf->depth + 7) >> 3; 00955 break; 00956 case FF_PIXEL_PALETTE: 00957 if (plane == 0) 00958 return width; 00959 break; 00960 } 00961 00962 return -1; 00963 } 00964 00965 void av_picture_copy(AVPicture *dst, const AVPicture *src, 00966 enum PixelFormat pix_fmt, int width, int height) 00967 { 00968 int i; 00969 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt]; 00970 const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; 00971 00972 switch(pf->pixel_type) { 00973 case FF_PIXEL_PACKED: 00974 case FF_PIXEL_PLANAR: 00975 for(i = 0; i < pf->nb_channels; i++) { 00976 int h; 00977 int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i); 00978 h = height; 00979 if (i == 1 || i == 2) { 00980 h= -((-height)>>desc->log2_chroma_h); 00981 } 00982 ff_img_copy_plane(dst->data[i], dst->linesize[i], 00983 src->data[i], src->linesize[i], 00984 bwidth, h); 00985 } 00986 break; 00987 case FF_PIXEL_PALETTE: 00988 ff_img_copy_plane(dst->data[0], dst->linesize[0], 00989 src->data[0], src->linesize[0], 00990 width, height); 00991 /* copy the palette */ 00992 memcpy(dst->data[1], src->data[1], 4*256); 00993 break; 00994 } 00995 } 00996 00997 /* 2x2 -> 1x1 */ 00998 void ff_shrink22(uint8_t *dst, int dst_wrap, 00999 const uint8_t *src, int src_wrap, 01000 int width, int height) 01001 { 01002 int w; 01003 const uint8_t *s1, *s2; 01004 uint8_t *d; 01005 01006 for(;height > 0; height--) { 01007 s1 = src; 01008 s2 = s1 + src_wrap; 01009 d = dst; 01010 for(w = width;w >= 4; w-=4) { 01011 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2; 01012 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2; 01013 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2; 01014 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2; 01015 s1 += 8; 01016 s2 += 8; 01017 d += 4; 01018 } 01019 for(;w > 0; w--) { 01020 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2; 01021 s1 += 2; 01022 s2 += 2; 01023 d++; 01024 } 01025 src += 2 * src_wrap; 01026 dst += dst_wrap; 01027 } 01028 } 01029 01030 /* 4x4 -> 1x1 */ 01031 void ff_shrink44(uint8_t *dst, int dst_wrap, 01032 const uint8_t *src, int src_wrap, 01033 int width, int height) 01034 { 01035 int w; 01036 const uint8_t *s1, *s2, *s3, *s4; 01037 uint8_t *d; 01038 01039 for(;height > 0; height--) { 01040 s1 = src; 01041 s2 = s1 + src_wrap; 01042 s3 = s2 + src_wrap; 01043 s4 = s3 + src_wrap; 01044 d = dst; 01045 for(w = width;w > 0; w--) { 01046 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] + 01047 s2[0] + s2[1] + s2[2] + s2[3] + 01048 s3[0] + s3[1] + s3[2] + s3[3] + 01049 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4; 01050 s1 += 4; 01051 s2 += 4; 01052 s3 += 4; 01053 s4 += 4; 01054 d++; 01055 } 01056 src += 4 * src_wrap; 01057 dst += dst_wrap; 01058 } 01059 } 01060 01061 /* 8x8 -> 1x1 */ 01062 void ff_shrink88(uint8_t *dst, int dst_wrap, 01063 const uint8_t *src, int src_wrap, 01064 int width, int height) 01065 { 01066 int w, i; 01067 01068 for(;height > 0; height--) { 01069 for(w = width;w > 0; w--) { 01070 int tmp=0; 01071 for(i=0; i<8; i++){ 01072 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7]; 01073 src += src_wrap; 01074 } 01075 *(dst++) = (tmp + 32)>>6; 01076 src += 8 - 8*src_wrap; 01077 } 01078 src += 8*src_wrap - 8*width; 01079 dst += dst_wrap - width; 01080 } 01081 } 01082 01083 01084 int avpicture_alloc(AVPicture *picture, 01085 enum PixelFormat pix_fmt, int width, int height) 01086 { 01087 int size; 01088 void *ptr; 01089 01090 size = avpicture_fill(picture, NULL, pix_fmt, width, height); 01091 if(size<0) 01092 goto fail; 01093 ptr = av_malloc(size); 01094 if (!ptr) 01095 goto fail; 01096 avpicture_fill(picture, ptr, pix_fmt, width, height); 01097 if(picture->data[1] && !picture->data[2]) 01098 ff_set_systematic_pal((uint32_t*)picture->data[1], pix_fmt); 01099 01100 return 0; 01101 fail: 01102 memset(picture, 0, sizeof(AVPicture)); 01103 return -1; 01104 } 01105 01106 void avpicture_free(AVPicture *picture) 01107 { 01108 av_free(picture->data[0]); 01109 } 01110 01111 /* return true if yuv planar */ 01112 static inline int is_yuv_planar(const PixFmtInfo *ps) 01113 { 01114 return (ps->color_type == FF_COLOR_YUV || 01115 ps->color_type == FF_COLOR_YUV_JPEG) && 01116 ps->pixel_type == FF_PIXEL_PLANAR; 01117 } 01118 01119 int av_picture_crop(AVPicture *dst, const AVPicture *src, 01120 enum PixelFormat pix_fmt, int top_band, int left_band) 01121 { 01122 int y_shift; 01123 int x_shift; 01124 01125 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt])) 01126 return -1; 01127 01128 y_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h; 01129 x_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w; 01130 01131 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band; 01132 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift); 01133 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift); 01134 01135 dst->linesize[0] = src->linesize[0]; 01136 dst->linesize[1] = src->linesize[1]; 01137 dst->linesize[2] = src->linesize[2]; 01138 return 0; 01139 } 01140 01141 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width, 01142 enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright, 01143 int *color) 01144 { 01145 uint8_t *optr; 01146 int y_shift; 01147 int x_shift; 01148 int yheight; 01149 int i, y; 01150 01151 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || 01152 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1; 01153 01154 for (i = 0; i < 3; i++) { 01155 x_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_w : 0; 01156 y_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_h : 0; 01157 01158 if (padtop || padleft) { 01159 memset(dst->data[i], color[i], 01160 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift)); 01161 } 01162 01163 if (padleft || padright) { 01164 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + 01165 (dst->linesize[i] - (padright >> x_shift)); 01166 yheight = (height - 1 - (padtop + padbottom)) >> y_shift; 01167 for (y = 0; y < yheight; y++) { 01168 memset(optr, color[i], (padleft + padright) >> x_shift); 01169 optr += dst->linesize[i]; 01170 } 01171 } 01172 01173 if (src) { /* first line */ 01174 uint8_t *iptr = src->data[i]; 01175 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + 01176 (padleft >> x_shift); 01177 memcpy(optr, iptr, (width - padleft - padright) >> x_shift); 01178 iptr += src->linesize[i]; 01179 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) + 01180 (dst->linesize[i] - (padright >> x_shift)); 01181 yheight = (height - 1 - (padtop + padbottom)) >> y_shift; 01182 for (y = 0; y < yheight; y++) { 01183 memset(optr, color[i], (padleft + padright) >> x_shift); 01184 memcpy(optr + ((padleft + padright) >> x_shift), iptr, 01185 (width - padleft - padright) >> x_shift); 01186 iptr += src->linesize[i]; 01187 optr += dst->linesize[i]; 01188 } 01189 } 01190 01191 if (padbottom || padright) { 01192 optr = dst->data[i] + dst->linesize[i] * 01193 ((height - padbottom) >> y_shift) - (padright >> x_shift); 01194 memset(optr, color[i],dst->linesize[i] * 01195 (padbottom >> y_shift) + (padright >> x_shift)); 01196 } 01197 } 01198 return 0; 01199 } 01200 01201 /* NOTE: we scan all the pixels to have an exact information */ 01202 static int get_alpha_info_pal8(const AVPicture *src, int width, int height) 01203 { 01204 const unsigned char *p; 01205 int src_wrap, ret, x, y; 01206 unsigned int a; 01207 uint32_t *palette = (uint32_t *)src->data[1]; 01208 01209 p = src->data[0]; 01210 src_wrap = src->linesize[0] - width; 01211 ret = 0; 01212 for(y=0;y<height;y++) { 01213 for(x=0;x<width;x++) { 01214 a = palette[p[0]] >> 24; 01215 if (a == 0x00) { 01216 ret |= FF_ALPHA_TRANSP; 01217 } else if (a != 0xff) { 01218 ret |= FF_ALPHA_SEMI_TRANSP; 01219 } 01220 p++; 01221 } 01222 p += src_wrap; 01223 } 01224 return ret; 01225 } 01226 01227 int img_get_alpha_info(const AVPicture *src, 01228 enum PixelFormat pix_fmt, int width, int height) 01229 { 01230 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt]; 01231 int ret; 01232 01233 /* no alpha can be represented in format */ 01234 if (!pf->is_alpha) 01235 return 0; 01236 switch(pix_fmt) { 01237 case PIX_FMT_PAL8: 01238 ret = get_alpha_info_pal8(src, width, height); 01239 break; 01240 default: 01241 /* we do not know, so everything is indicated */ 01242 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP; 01243 break; 01244 } 01245 return ret; 01246 } 01247 01248 #if HAVE_MMX 01249 #define DEINT_INPLACE_LINE_LUM \ 01250 movd_m2r(lum_m4[0],mm0);\ 01251 movd_m2r(lum_m3[0],mm1);\ 01252 movd_m2r(lum_m2[0],mm2);\ 01253 movd_m2r(lum_m1[0],mm3);\ 01254 movd_m2r(lum[0],mm4);\ 01255 punpcklbw_r2r(mm7,mm0);\ 01256 movd_r2m(mm2,lum_m4[0]);\ 01257 punpcklbw_r2r(mm7,mm1);\ 01258 punpcklbw_r2r(mm7,mm2);\ 01259 punpcklbw_r2r(mm7,mm3);\ 01260 punpcklbw_r2r(mm7,mm4);\ 01261 paddw_r2r(mm3,mm1);\ 01262 psllw_i2r(1,mm2);\ 01263 paddw_r2r(mm4,mm0);\ 01264 psllw_i2r(2,mm1);\ 01265 paddw_r2r(mm6,mm2);\ 01266 paddw_r2r(mm2,mm1);\ 01267 psubusw_r2r(mm0,mm1);\ 01268 psrlw_i2r(3,mm1);\ 01269 packuswb_r2r(mm7,mm1);\ 01270 movd_r2m(mm1,lum_m2[0]); 01271 01272 #define DEINT_LINE_LUM \ 01273 movd_m2r(lum_m4[0],mm0);\ 01274 movd_m2r(lum_m3[0],mm1);\ 01275 movd_m2r(lum_m2[0],mm2);\ 01276 movd_m2r(lum_m1[0],mm3);\ 01277 movd_m2r(lum[0],mm4);\ 01278 punpcklbw_r2r(mm7,mm0);\ 01279 punpcklbw_r2r(mm7,mm1);\ 01280 punpcklbw_r2r(mm7,mm2);\ 01281 punpcklbw_r2r(mm7,mm3);\ 01282 punpcklbw_r2r(mm7,mm4);\ 01283 paddw_r2r(mm3,mm1);\ 01284 psllw_i2r(1,mm2);\ 01285 paddw_r2r(mm4,mm0);\ 01286 psllw_i2r(2,mm1);\ 01287 paddw_r2r(mm6,mm2);\ 01288 paddw_r2r(mm2,mm1);\ 01289 psubusw_r2r(mm0,mm1);\ 01290 psrlw_i2r(3,mm1);\ 01291 packuswb_r2r(mm7,mm1);\ 01292 movd_r2m(mm1,dst[0]); 01293 #endif 01294 01295 /* filter parameters: [-1 4 2 4 -1] // 8 */ 01296 static void deinterlace_line(uint8_t *dst, 01297 const uint8_t *lum_m4, const uint8_t *lum_m3, 01298 const uint8_t *lum_m2, const uint8_t *lum_m1, 01299 const uint8_t *lum, 01300 int size) 01301 { 01302 #if !HAVE_MMX 01303 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; 01304 int sum; 01305 01306 for(;size > 0;size--) { 01307 sum = -lum_m4[0]; 01308 sum += lum_m3[0] << 2; 01309 sum += lum_m2[0] << 1; 01310 sum += lum_m1[0] << 2; 01311 sum += -lum[0]; 01312 dst[0] = cm[(sum + 4) >> 3]; 01313 lum_m4++; 01314 lum_m3++; 01315 lum_m2++; 01316 lum_m1++; 01317 lum++; 01318 dst++; 01319 } 01320 #else 01321 01322 { 01323 pxor_r2r(mm7,mm7); 01324 movq_m2r(ff_pw_4,mm6); 01325 } 01326 for (;size > 3; size-=4) { 01327 DEINT_LINE_LUM 01328 lum_m4+=4; 01329 lum_m3+=4; 01330 lum_m2+=4; 01331 lum_m1+=4; 01332 lum+=4; 01333 dst+=4; 01334 } 01335 #endif 01336 } 01337 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum, 01338 int size) 01339 { 01340 #if !HAVE_MMX 01341 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; 01342 int sum; 01343 01344 for(;size > 0;size--) { 01345 sum = -lum_m4[0]; 01346 sum += lum_m3[0] << 2; 01347 sum += lum_m2[0] << 1; 01348 lum_m4[0]=lum_m2[0]; 01349 sum += lum_m1[0] << 2; 01350 sum += -lum[0]; 01351 lum_m2[0] = cm[(sum + 4) >> 3]; 01352 lum_m4++; 01353 lum_m3++; 01354 lum_m2++; 01355 lum_m1++; 01356 lum++; 01357 } 01358 #else 01359 01360 { 01361 pxor_r2r(mm7,mm7); 01362 movq_m2r(ff_pw_4,mm6); 01363 } 01364 for (;size > 3; size-=4) { 01365 DEINT_INPLACE_LINE_LUM 01366 lum_m4+=4; 01367 lum_m3+=4; 01368 lum_m2+=4; 01369 lum_m1+=4; 01370 lum+=4; 01371 } 01372 #endif 01373 } 01374 01375 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The 01376 top field is copied as is, but the bottom field is deinterlaced 01377 against the top field. */ 01378 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap, 01379 const uint8_t *src1, int src_wrap, 01380 int width, int height) 01381 { 01382 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2; 01383 int y; 01384 01385 src_m2 = src1; 01386 src_m1 = src1; 01387 src_0=&src_m1[src_wrap]; 01388 src_p1=&src_0[src_wrap]; 01389 src_p2=&src_p1[src_wrap]; 01390 for(y=0;y<(height-2);y+=2) { 01391 memcpy(dst,src_m1,width); 01392 dst += dst_wrap; 01393 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width); 01394 src_m2 = src_0; 01395 src_m1 = src_p1; 01396 src_0 = src_p2; 01397 src_p1 += 2*src_wrap; 01398 src_p2 += 2*src_wrap; 01399 dst += dst_wrap; 01400 } 01401 memcpy(dst,src_m1,width); 01402 dst += dst_wrap; 01403 /* do last line */ 01404 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width); 01405 } 01406 01407 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap, 01408 int width, int height) 01409 { 01410 uint8_t *src_m1, *src_0, *src_p1, *src_p2; 01411 int y; 01412 uint8_t *buf; 01413 buf = (uint8_t*)av_malloc(width); 01414 01415 src_m1 = src1; 01416 memcpy(buf,src_m1,width); 01417 src_0=&src_m1[src_wrap]; 01418 src_p1=&src_0[src_wrap]; 01419 src_p2=&src_p1[src_wrap]; 01420 for(y=0;y<(height-2);y+=2) { 01421 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width); 01422 src_m1 = src_p1; 01423 src_0 = src_p2; 01424 src_p1 += 2*src_wrap; 01425 src_p2 += 2*src_wrap; 01426 } 01427 /* do last line */ 01428 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width); 01429 av_free(buf); 01430 } 01431 01432 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src, 01433 enum PixelFormat pix_fmt, int width, int height) 01434 { 01435 int i; 01436 01437 if (pix_fmt != PIX_FMT_YUV420P && 01438 pix_fmt != PIX_FMT_YUV422P && 01439 pix_fmt != PIX_FMT_YUV444P && 01440 pix_fmt != PIX_FMT_YUV411P && 01441 pix_fmt != PIX_FMT_GRAY8) 01442 return -1; 01443 if ((width & 3) != 0 || (height & 3) != 0) 01444 return -1; 01445 01446 for(i=0;i<3;i++) { 01447 if (i == 1) { 01448 switch(pix_fmt) { 01449 case PIX_FMT_YUV420P: 01450 width >>= 1; 01451 height >>= 1; 01452 break; 01453 case PIX_FMT_YUV422P: 01454 width >>= 1; 01455 break; 01456 case PIX_FMT_YUV411P: 01457 width >>= 2; 01458 break; 01459 default: 01460 break; 01461 } 01462 if (pix_fmt == PIX_FMT_GRAY8) { 01463 break; 01464 } 01465 } 01466 if (src == dst) { 01467 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i], 01468 width, height); 01469 } else { 01470 deinterlace_bottom_field(dst->data[i],dst->linesize[i], 01471 src->data[i], src->linesize[i], 01472 width, height); 01473 } 01474 } 01475 emms_c(); 01476 return 0; 01477 } 01478