libavcodec/imgconvert.c

   1 /*
   2  * Misc image conversion routines
   3  * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * @file libavcodec/imgconvert.c
  24  * misc image conversion routines
  25  */
  26
  27 /* TODO:
  28  * - write 'ffimg' program to test all the image related stuff
  29  * - move all api to slice based system
  30  * - integrate deinterlacing, postprocessing and scaling in the conversion process
  31  */
  32
  33 #include "avcodec.h"
  34 #include "dsputil.h"
  35 #include "colorspace.h"
  36
  37 #if HAVE_MMX
  38 #include "x86/mmx.h"
  39 #include "x86/dsputil_mmx.h"
  40 #endif
  41
  42 #define xglue(x, y) x ## y
  43 #define glue(x, y) xglue(x, y)
  44
  45 #define FF_COLOR_RGB      0 /**< RGB color space */
  46 #define FF_COLOR_GRAY     1 /**< gray color space */
  47 #define FF_COLOR_YUV      2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
  48 #define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
  49
  50 #define FF_PIXEL_PLANAR   0 /**< each channel has one component in AVPicture */
  51 #define FF_PIXEL_PACKED   1 /**< only one components containing all the channels */
  52 #define FF_PIXEL_PALETTE  2  /**< one components containing indexes for a palette */
  53
  54 typedef struct PixFmtInfo {
  55     const char *name;
  56     uint8_t nb_channels;     /**< number of channels (including alpha) */
  57     uint8_t color_type;      /**< color type (see FF_COLOR_xxx constants) */
  58     uint8_t pixel_type;      /**< pixel storage type (see FF_PIXEL_xxx constants) */
  59     uint8_t is_alpha : 1;    /**< true if alpha can be specified */
  60     uint8_t is_hwaccel : 1;  /**< true if this is an HW accelerated format */
  61     uint8_t x_chroma_shift;  /**< X chroma subsampling factor is 2 ^ shift */
  62     uint8_t y_chroma_shift;  /**< Y chroma subsampling factor is 2 ^ shift */
  63     uint8_t depth;           /**< bit depth of the color components */
  64 } PixFmtInfo;
  65
  66 /* this table gives more information about formats */
  67 static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
  68     /* YUV formats */
  69     [PIX_FMT_YUV420P] = {
  70         .name = "yuv420p",
  71         .nb_channels = 3,
  72         .color_type = FF_COLOR_YUV,
  73         .pixel_type = FF_PIXEL_PLANAR,
  74         .depth = 8,
  75         .x_chroma_shift = 1, .y_chroma_shift = 1,
  76     },
  77     [PIX_FMT_YUV422P] = {
  78         .name = "yuv422p",
  79         .nb_channels = 3,
  80         .color_type = FF_COLOR_YUV,
  81         .pixel_type = FF_PIXEL_PLANAR,
  82         .depth = 8,
  83         .x_chroma_shift = 1, .y_chroma_shift = 0,
  84     },
  85     [PIX_FMT_YUV444P] = {
  86         .name = "yuv444p",
  87         .nb_channels = 3,
  88         .color_type = FF_COLOR_YUV,
  89         .pixel_type = FF_PIXEL_PLANAR,
  90         .depth = 8,
  91         .x_chroma_shift = 0, .y_chroma_shift = 0,
  92     },
  93     [PIX_FMT_YUYV422] = {
  94         .name = "yuyv422",
  95         .nb_channels = 1,
  96         .color_type = FF_COLOR_YUV,
  97         .pixel_type = FF_PIXEL_PACKED,
  98         .depth = 8,
  99         .x_chroma_shift = 1, .y_chroma_shift = 0,
 100     },
 101     [PIX_FMT_UYVY422] = {
 102         .name = "uyvy422",
 103         .nb_channels = 1,
 104         .color_type = FF_COLOR_YUV,
 105         .pixel_type = FF_PIXEL_PACKED,
 106         .depth = 8,
 107         .x_chroma_shift = 1, .y_chroma_shift = 0,
 108     },
 109     [PIX_FMT_YUV410P] = {
 110         .name = "yuv410p",
 111         .nb_channels = 3,
 112         .color_type = FF_COLOR_YUV,
 113         .pixel_type = FF_PIXEL_PLANAR,
 114         .depth = 8,
 115         .x_chroma_shift = 2, .y_chroma_shift = 2,
 116     },
 117     [PIX_FMT_YUV411P] = {
 118         .name = "yuv411p",
 119         .nb_channels = 3,
 120         .color_type = FF_COLOR_YUV,
 121         .pixel_type = FF_PIXEL_PLANAR,
 122         .depth = 8,
 123         .x_chroma_shift = 2, .y_chroma_shift = 0,
 124     },
 125     [PIX_FMT_YUV440P] = {
 126         .name = "yuv440p",
 127         .nb_channels = 3,
 128         .color_type = FF_COLOR_YUV,
 129         .pixel_type = FF_PIXEL_PLANAR,
 130         .depth = 8,
 131         .x_chroma_shift = 0, .y_chroma_shift = 1,
 132     },
 133
 134     /* YUV formats with alpha plane */
 135     [PIX_FMT_YUVA420P] = {
 136         .name = "yuva420p",
 137         .nb_channels = 4,
 138         .color_type = FF_COLOR_YUV,
 139         .pixel_type = FF_PIXEL_PLANAR,
 140         .depth = 8,
 141         .x_chroma_shift = 1, .y_chroma_shift = 1,
 142     },
 143
 144     /* JPEG YUV */
 145     [PIX_FMT_YUVJ420P] = {
 146         .name = "yuvj420p",
 147         .nb_channels = 3,
 148         .color_type = FF_COLOR_YUV_JPEG,
 149         .pixel_type = FF_PIXEL_PLANAR,
 150         .depth = 8,
 151         .x_chroma_shift = 1, .y_chroma_shift = 1,
 152     },
 153     [PIX_FMT_YUVJ422P] = {
 154         .name = "yuvj422p",
 155         .nb_channels = 3,
 156         .color_type = FF_COLOR_YUV_JPEG,
 157         .pixel_type = FF_PIXEL_PLANAR,
 158         .depth = 8,
 159         .x_chroma_shift = 1, .y_chroma_shift = 0,
 160     },
 161     [PIX_FMT_YUVJ444P] = {
 162         .name = "yuvj444p",
 163         .nb_channels = 3,
 164         .color_type = FF_COLOR_YUV_JPEG,
 165         .pixel_type = FF_PIXEL_PLANAR,
 166         .depth = 8,
 167         .x_chroma_shift = 0, .y_chroma_shift = 0,
 168     },
 169     [PIX_FMT_YUVJ440P] = {
 170         .name = "yuvj440p",
 171         .nb_channels = 3,
 172         .color_type = FF_COLOR_YUV_JPEG,
 173         .pixel_type = FF_PIXEL_PLANAR,
 174         .depth = 8,
 175         .x_chroma_shift = 0, .y_chroma_shift = 1,
 176     },
 177
 178     /* RGB formats */
 179     [PIX_FMT_RGB24] = {
 180         .name = "rgb24",
 181         .nb_channels = 3,
 182         .color_type = FF_COLOR_RGB,
 183         .pixel_type = FF_PIXEL_PACKED,
 184         .depth = 8,
 185         .x_chroma_shift = 0, .y_chroma_shift = 0,
 186     },
 187     [PIX_FMT_BGR24] = {
 188         .name = "bgr24",
 189         .nb_channels = 3,
 190         .color_type = FF_COLOR_RGB,
 191         .pixel_type = FF_PIXEL_PACKED,
 192         .depth = 8,
 193         .x_chroma_shift = 0, .y_chroma_shift = 0,
 194     },
 195     [PIX_FMT_ARGB] = {
 196         .name = "argb",
 197         .nb_channels = 4, .is_alpha = 1,
 198         .color_type = FF_COLOR_RGB,
 199         .pixel_type = FF_PIXEL_PACKED,
 200         .depth = 8,
 201         .x_chroma_shift = 0, .y_chroma_shift = 0,
 202     },
 203     [PIX_FMT_RGB48BE] = {
 204         .name = "rgb48be",
 205         .nb_channels = 3,
 206         .color_type = FF_COLOR_RGB,
 207         .pixel_type = FF_PIXEL_PACKED,
 208         .depth = 16,
 209         .x_chroma_shift = 0, .y_chroma_shift = 0,
 210     },
 211     [PIX_FMT_RGB48LE] = {
 212         .name = "rgb48le",
 213         .nb_channels = 3,
 214         .color_type = FF_COLOR_RGB,
 215         .pixel_type = FF_PIXEL_PACKED,
 216         .depth = 16,
 217         .x_chroma_shift = 0, .y_chroma_shift = 0,
 218     },
 219     [PIX_FMT_RGB565BE] = {
 220         .name = "rgb565be",
 221         .nb_channels = 3,
 222         .color_type = FF_COLOR_RGB,
 223         .pixel_type = FF_PIXEL_PACKED,
 224         .depth = 5,
 225         .x_chroma_shift = 0, .y_chroma_shift = 0,
 226     },
 227     [PIX_FMT_RGB565LE] = {
 228         .name = "rgb565le",
 229         .nb_channels = 3,
 230         .color_type = FF_COLOR_RGB,
 231         .pixel_type = FF_PIXEL_PACKED,
 232         .depth = 5,
 233         .x_chroma_shift = 0, .y_chroma_shift = 0,
 234     },
 235     [PIX_FMT_RGB555BE] = {
 236         .name = "rgb555be",
 237         .nb_channels = 3,
 238         .color_type = FF_COLOR_RGB,
 239         .pixel_type = FF_PIXEL_PACKED,
 240         .depth = 5,
 241         .x_chroma_shift = 0, .y_chroma_shift = 0,
 242     },
 243     [PIX_FMT_RGB555LE] = {
 244         .name = "rgb555le",
 245         .nb_channels = 3,
 246         .color_type = FF_COLOR_RGB,
 247         .pixel_type = FF_PIXEL_PACKED,
 248         .depth = 5,
 249         .x_chroma_shift = 0, .y_chroma_shift = 0,
 250     },
 251
 252     /* gray / mono formats */
 253     [PIX_FMT_GRAY16BE] = {
 254         .name = "gray16be",
 255         .nb_channels = 1,
 256         .color_type = FF_COLOR_GRAY,
 257         .pixel_type = FF_PIXEL_PLANAR,
 258         .depth = 16,
 259     },
 260     [PIX_FMT_GRAY16LE] = {
 261         .name = "gray16le",
 262         .nb_channels = 1,
 263         .color_type = FF_COLOR_GRAY,
 264         .pixel_type = FF_PIXEL_PLANAR,
 265         .depth = 16,
 266     },
 267     [PIX_FMT_GRAY8] = {
 268         .name = "gray",
 269         .nb_channels = 1,
 270         .color_type = FF_COLOR_GRAY,
 271         .pixel_type = FF_PIXEL_PLANAR,
 272         .depth = 8,
 273     },
 274     [PIX_FMT_MONOWHITE] = {
 275         .name = "monow",
 276         .nb_channels = 1,
 277         .color_type = FF_COLOR_GRAY,
 278         .pixel_type = FF_PIXEL_PLANAR,
 279         .depth = 1,
 280     },
 281     [PIX_FMT_MONOBLACK] = {
 282         .name = "monob",
 283         .nb_channels = 1,
 284         .color_type = FF_COLOR_GRAY,
 285         .pixel_type = FF_PIXEL_PLANAR,
 286         .depth = 1,
 287     },
 288
 289     /* paletted formats */
 290     [PIX_FMT_PAL8] = {
 291         .name = "pal8",
 292         .nb_channels = 4, .is_alpha = 1,
 293         .color_type = FF_COLOR_RGB,
 294         .pixel_type = FF_PIXEL_PALETTE,
 295         .depth = 8,
 296     },
 297     [PIX_FMT_XVMC_MPEG2_MC] = {
 298         .name = "xvmcmc",
 299         .is_hwaccel = 1,
 300     },
 301     [PIX_FMT_XVMC_MPEG2_IDCT] = {
 302         .name = "xvmcidct",
 303         .is_hwaccel = 1,
 304     },
 305     [PIX_FMT_VDPAU_MPEG1] = {
 306         .name = "vdpau_mpeg1",
 307         .is_hwaccel = 1,
 308         .x_chroma_shift = 1, .y_chroma_shift = 1,
 309     },
 310     [PIX_FMT_VDPAU_MPEG2] = {
 311         .name = "vdpau_mpeg2",
 312         .is_hwaccel = 1,
 313         .x_chroma_shift = 1, .y_chroma_shift = 1,
 314     },
 315     [PIX_FMT_VDPAU_H264] = {
 316         .name = "vdpau_h264",
 317         .is_hwaccel = 1,
 318         .x_chroma_shift = 1, .y_chroma_shift = 1,
 319     },
 320     [PIX_FMT_VDPAU_WMV3] = {
 321         .name = "vdpau_wmv3",
 322         .is_hwaccel = 1,
 323         .x_chroma_shift = 1, .y_chroma_shift = 1,
 324     },
 325     [PIX_FMT_VDPAU_VC1] = {
 326         .name = "vdpau_vc1",
 327         .is_hwaccel = 1,
 328         .x_chroma_shift = 1, .y_chroma_shift = 1,
 329     },
 330     [PIX_FMT_UYYVYY411] = {
 331         .name = "uyyvyy411",
 332         .nb_channels = 1,
 333         .color_type = FF_COLOR_YUV,
 334         .pixel_type = FF_PIXEL_PACKED,
 335         .depth = 8,
 336         .x_chroma_shift = 2, .y_chroma_shift = 0,
 337     },
 338     [PIX_FMT_ABGR] = {
 339         .name = "abgr",
 340         .nb_channels = 4, .is_alpha = 1,
 341         .color_type = FF_COLOR_RGB,
 342         .pixel_type = FF_PIXEL_PACKED,
 343         .depth = 8,
 344         .x_chroma_shift = 0, .y_chroma_shift = 0,
 345     },
 346     [PIX_FMT_BGR565BE] = {
 347         .name = "bgr565be",
 348         .nb_channels = 3,
 349         .color_type = FF_COLOR_RGB,
 350         .pixel_type = FF_PIXEL_PACKED,
 351         .depth = 5,
 352         .x_chroma_shift = 0, .y_chroma_shift = 0,
 353     },
 354     [PIX_FMT_BGR565LE] = {
 355         .name = "bgr565le",
 356         .nb_channels = 3,
 357         .color_type = FF_COLOR_RGB,
 358         .pixel_type = FF_PIXEL_PACKED,
 359         .depth = 5,
 360         .x_chroma_shift = 0, .y_chroma_shift = 0,
 361     },
 362     [PIX_FMT_BGR555BE] = {
 363         .name = "bgr555be",
 364         .nb_channels = 3,
 365         .color_type = FF_COLOR_RGB,
 366         .pixel_type = FF_PIXEL_PACKED,
 367         .depth = 5,
 368         .x_chroma_shift = 0, .y_chroma_shift = 0,
 369     },
 370     [PIX_FMT_BGR555LE] = {
 371         .name = "bgr555le",
 372         .nb_channels = 3,
 373         .color_type = FF_COLOR_RGB,
 374         .pixel_type = FF_PIXEL_PACKED,
 375         .depth = 5,
 376         .x_chroma_shift = 0, .y_chroma_shift = 0,
 377     },
 378     [PIX_FMT_RGB8] = {
 379         .name = "rgb8",
 380         .nb_channels = 1,
 381         .color_type = FF_COLOR_RGB,
 382         .pixel_type = FF_PIXEL_PACKED,
 383         .depth = 8,
 384         .x_chroma_shift = 0, .y_chroma_shift = 0,
 385     },
 386     [PIX_FMT_RGB4] = {
 387         .name = "rgb4",
 388         .nb_channels = 1,
 389         .color_type = FF_COLOR_RGB,
 390         .pixel_type = FF_PIXEL_PACKED,
 391         .depth = 4,
 392         .x_chroma_shift = 0, .y_chroma_shift = 0,
 393     },
 394     [PIX_FMT_RGB4_BYTE] = {
 395         .name = "rgb4_byte",
 396         .nb_channels = 1,
 397         .color_type = FF_COLOR_RGB,
 398         .pixel_type = FF_PIXEL_PACKED,
 399         .depth = 8,
 400         .x_chroma_shift = 0, .y_chroma_shift = 0,
 401     },
 402     [PIX_FMT_BGR8] = {
 403         .name = "bgr8",
 404         .nb_channels = 1,
 405         .color_type = FF_COLOR_RGB,
 406         .pixel_type = FF_PIXEL_PACKED,
 407         .depth = 8,
 408         .x_chroma_shift = 0, .y_chroma_shift = 0,
 409     },
 410     [PIX_FMT_BGR4] = {
 411         .name = "bgr4",
 412         .nb_channels = 1,
 413         .color_type = FF_COLOR_RGB,
 414         .pixel_type = FF_PIXEL_PACKED,
 415         .depth = 4,
 416         .x_chroma_shift = 0, .y_chroma_shift = 0,
 417     },
 418     [PIX_FMT_BGR4_BYTE] = {
 419         .name = "bgr4_byte",
 420         .nb_channels = 1,
 421         .color_type = FF_COLOR_RGB,
 422         .pixel_type = FF_PIXEL_PACKED,
 423         .depth = 8,
 424         .x_chroma_shift = 0, .y_chroma_shift = 0,
 425     },
 426     [PIX_FMT_NV12] = {
 427         .name = "nv12",
 428         .nb_channels = 2,
 429         .color_type = FF_COLOR_YUV,
 430         .pixel_type = FF_PIXEL_PLANAR,
 431         .depth = 8,
 432         .x_chroma_shift = 1, .y_chroma_shift = 1,
 433     },
 434     [PIX_FMT_NV21] = {
 435         .name = "nv12",
 436         .nb_channels = 2,
 437         .color_type = FF_COLOR_YUV,
 438         .pixel_type = FF_PIXEL_PLANAR,
 439         .depth = 8,
 440         .x_chroma_shift = 1, .y_chroma_shift = 1,
 441     },
 442
 443     [PIX_FMT_BGRA] = {
 444         .name = "bgra",
 445         .nb_channels = 4, .is_alpha = 1,
 446         .color_type = FF_COLOR_RGB,
 447         .pixel_type = FF_PIXEL_PACKED,
 448         .depth = 8,
 449         .x_chroma_shift = 0, .y_chroma_shift = 0,
 450     },
 451     [PIX_FMT_RGBA] = {
 452         .name = "rgba",
 453         .nb_channels = 4, .is_alpha = 1,
 454         .color_type = FF_COLOR_RGB,
 455         .pixel_type = FF_PIXEL_PACKED,
 456         .depth = 8,
 457         .x_chroma_shift = 0, .y_chroma_shift = 0,
 458     },
 459
 460     /* VA API formats */
 461     [PIX_FMT_VAAPI_MOCO] = {
 462         .name = "vaapi_moco",
 463         .is_hwaccel = 1,
 464         .x_chroma_shift = 1, .y_chroma_shift = 1,
 465     },
 466     [PIX_FMT_VAAPI_IDCT] = {
 467         .name = "vaapi_idct",
 468         .is_hwaccel = 1,
 469         .x_chroma_shift = 1, .y_chroma_shift = 1,
 470     },
 471     [PIX_FMT_VAAPI_VLD] = {
 472         .name = "vaapi_vld",
 473         .is_hwaccel = 1,
 474         .x_chroma_shift = 1, .y_chroma_shift = 1,
 475     },
 476 };
 477
 478 void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
 479 {
 480     *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
 481     *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
 482 }
 483
 484 const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
 485 {
 486     if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
 487         return NULL;
 488     else
 489         return pix_fmt_info[pix_fmt].name;
 490 }
 491
 492 static enum PixelFormat avcodec_get_pix_fmt_internal(const char *name)
 493 {
 494     int i;
 495
 496     for (i=0; i < PIX_FMT_NB; i++)
 497         if (pix_fmt_info[i].name && !strcmp(pix_fmt_info[i].name, name))
 498              return i;
 499     return PIX_FMT_NONE;
 500 }
 501
 502 #ifdef WORDS_BIGENDIAN
 503 #   define X_NE(be, le) be
 504 #else
 505 #   define X_NE(be, le) le
 506 #endif
 507
 508 enum PixelFormat avcodec_get_pix_fmt(const char *name)
 509 {
 510     enum PixelFormat pix_fmt;
 511
 512     if (!strcmp(name, "rgb32"))
 513         name = X_NE("argb", "bgra");
 514     else if (!strcmp(name, "bgr32"))
 515         name = X_NE("abgr", "rgba");
 516
 517     pix_fmt = avcodec_get_pix_fmt_internal(name);
 518     if (pix_fmt == PIX_FMT_NONE) {
 519         char name2[32];
 520         snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le"));
 521         pix_fmt = avcodec_get_pix_fmt_internal(name2);
 522     }
 523     return pix_fmt;
 524 }
 525
 526 void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
 527 {
 528     /* print header */
 529     if (pix_fmt < 0)
 530         snprintf (buf, buf_size,
 531                   "name      " " nb_channels" " depth" " is_alpha"
 532             );
 533     else{
 534         PixFmtInfo info= pix_fmt_info[pix_fmt];
 535
 536         char is_alpha_char= info.is_alpha ? 'y' : 'n';
 537
 538         snprintf (buf, buf_size,
 539                   "%-10s" "      %1d     " "   %2d " "     %c   ",
 540                   info.name,
 541                   info.nb_channels,
 542                   info.depth,
 543                   is_alpha_char
 544             );
 545     }
 546 }
 547
 548 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
 549 {
 550     return pix_fmt_info[pix_fmt].is_hwaccel;
 551 }
 552
 553 int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
 554     int i;
 555
 556     for(i=0; i<256; i++){
 557         int r,g,b;
 558
 559         switch(pix_fmt) {
 560         case PIX_FMT_RGB8:
 561             r= (i>>5    )*36;
 562             g= ((i>>2)&7)*36;
 563             b= (i&3     )*85;
 564             break;
 565         case PIX_FMT_BGR8:
 566             b= (i>>6    )*85;
 567             g= ((i>>3)&7)*36;
 568             r= (i&7     )*36;
 569             break;
 570         case PIX_FMT_RGB4_BYTE:
 571             r= (i>>3    )*255;
 572             g= ((i>>1)&3)*85;
 573             b= (i&1     )*255;
 574             break;
 575         case PIX_FMT_BGR4_BYTE:
 576             b= (i>>3    )*255;
 577             g= ((i>>1)&3)*85;
 578             r= (i&1     )*255;
 579             break;
 580         case PIX_FMT_GRAY8:
 581             r=b=g= i;
 582             break;
 583         default:
 584             return -1;
 585         }
 586         pal[i] =  b + (g<<8) + (r<<16);
 587     }
 588
 589     return 0;
 590 }
 591
 592 int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
 593 {
 594     int w2;
 595     const PixFmtInfo *pinfo;
 596
 597     memset(picture->linesize, 0, sizeof(picture->linesize));
 598
 599     pinfo = &pix_fmt_info[pix_fmt];
 600     switch(pix_fmt) {
 601     case PIX_FMT_YUV420P:
 602     case PIX_FMT_YUV422P:
 603     case PIX_FMT_YUV444P:
 604     case PIX_FMT_YUV410P:
 605     case PIX_FMT_YUV411P:
 606     case PIX_FMT_YUV440P:
 607     case PIX_FMT_YUVJ420P:
 608     case PIX_FMT_YUVJ422P:
 609     case PIX_FMT_YUVJ444P:
 610     case PIX_FMT_YUVJ440P:
 611         w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
 612         picture->linesize[0] = width;
 613         picture->linesize[1] = w2;
 614         picture->linesize[2] = w2;
 615         break;
 616     case PIX_FMT_YUVA420P:
 617         w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
 618         picture->linesize[0] = width;
 619         picture->linesize[1] = w2;
 620         picture->linesize[2] = w2;
 621         picture->linesize[3] = width;
 622         break;
 623     case PIX_FMT_NV12:
 624     case PIX_FMT_NV21:
 625         w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
 626         picture->linesize[0] = width;
 627         picture->linesize[1] = w2;
 628         break;
 629     case PIX_FMT_RGB24:
 630     case PIX_FMT_BGR24:
 631         picture->linesize[0] = width * 3;
 632         break;
 633     case PIX_FMT_ARGB:
 634     case PIX_FMT_ABGR:
 635     case PIX_FMT_RGBA:
 636     case PIX_FMT_BGRA:
 637         picture->linesize[0] = width * 4;
 638         break;
 639     case PIX_FMT_RGB48BE:
 640     case PIX_FMT_RGB48LE:
 641         picture->linesize[0] = width * 6;
 642         break;
 643     case PIX_FMT_GRAY16BE:
 644     case PIX_FMT_GRAY16LE:
 645     case PIX_FMT_BGR555:
 646     case PIX_FMT_BGR565:
 647     case PIX_FMT_RGB555:
 648     case PIX_FMT_RGB565:
 649     case PIX_FMT_YUYV422:
 650         picture->linesize[0] = width * 2;
 651         break;
 652     case PIX_FMT_UYVY422:
 653         picture->linesize[0] = width * 2;
 654         break;
 655     case PIX_FMT_UYYVYY411:
 656         picture->linesize[0] = width + width/2;
 657         break;
 658     case PIX_FMT_RGB4:
 659     case PIX_FMT_BGR4:
 660         picture->linesize[0] = width / 2;
 661         break;
 662     case PIX_FMT_MONOWHITE:
 663     case PIX_FMT_MONOBLACK:
 664         picture->linesize[0] = (width + 7) >> 3;
 665         break;
 666     case PIX_FMT_PAL8:
 667     case PIX_FMT_RGB8:
 668     case PIX_FMT_BGR8:
 669     case PIX_FMT_RGB4_BYTE:
 670     case PIX_FMT_BGR4_BYTE:
 671     case PIX_FMT_GRAY8:
 672         picture->linesize[0] = width;
 673         break;
 674     default:
 675         return -1;
 676     }
 677     return 0;
 678 }
 679
 680 int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
 681                     int height)
 682 {
 683     int size, h2, size2;
 684     const PixFmtInfo *pinfo;
 685
 686     pinfo = &pix_fmt_info[pix_fmt];
 687     size = picture->linesize[0] * height;
 688     switch(pix_fmt) {
 689     case PIX_FMT_YUV420P:
 690     case PIX_FMT_YUV422P:
 691     case PIX_FMT_YUV444P:
 692     case PIX_FMT_YUV410P:
 693     case PIX_FMT_YUV411P:
 694     case PIX_FMT_YUV440P:
 695     case PIX_FMT_YUVJ420P:
 696     case PIX_FMT_YUVJ422P:
 697     case PIX_FMT_YUVJ444P:
 698     case PIX_FMT_YUVJ440P:
 699         h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
 700         size2 = picture->linesize[1] * h2;
 701         picture->data[0] = ptr;
 702         picture->data[1] = picture->data[0] + size;
 703         picture->data[2] = picture->data[1] + size2;
 704         picture->data[3] = NULL;
 705         return size + 2 * size2;
 706     case PIX_FMT_YUVA420P:
 707         h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
 708         size2 = picture->linesize[1] * h2;
 709         picture->data[0] = ptr;
 710         picture->data[1] = picture->data[0] + size;
 711         picture->data[2] = picture->data[1] + size2;
 712         picture->data[3] = picture->data[1] + size2 + size2;
 713         return 2 * size + 2 * size2;
 714     case PIX_FMT_NV12:
 715     case PIX_FMT_NV21:
 716         h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
 717         size2 = picture->linesize[1] * h2 * 2;
 718         picture->data[0] = ptr;
 719         picture->data[1] = picture->data[0] + size;
 720         picture->data[2] = NULL;
 721         picture->data[3] = NULL;
 722         return size + 2 * size2;
 723     case PIX_FMT_RGB24:
 724     case PIX_FMT_BGR24:
 725     case PIX_FMT_ARGB:
 726     case PIX_FMT_ABGR:
 727     case PIX_FMT_RGBA:
 728     case PIX_FMT_BGRA:
 729     case PIX_FMT_RGB48BE:
 730     case PIX_FMT_RGB48LE:
 731     case PIX_FMT_GRAY16BE:
 732     case PIX_FMT_GRAY16LE:
 733     case PIX_FMT_BGR555:
 734     case PIX_FMT_BGR565:
 735     case PIX_FMT_RGB555:
 736     case PIX_FMT_RGB565:
 737     case PIX_FMT_YUYV422:
 738     case PIX_FMT_UYVY422:
 739     case PIX_FMT_UYYVYY411:
 740     case PIX_FMT_RGB4:
 741     case PIX_FMT_BGR4:
 742     case PIX_FMT_MONOWHITE:
 743     case PIX_FMT_MONOBLACK:
 744         picture->data[0] = ptr;
 745         picture->data[1] = NULL;
 746         picture->data[2] = NULL;
 747         picture->data[3] = NULL;
 748         return size;
 749     case PIX_FMT_PAL8:
 750     case PIX_FMT_RGB8:
 751     case PIX_FMT_BGR8:
 752     case PIX_FMT_RGB4_BYTE:
 753     case PIX_FMT_BGR4_BYTE:
 754     case PIX_FMT_GRAY8:
 755         size2 = (size + 3) & ~3;
 756         picture->data[0] = ptr;
 757         picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
 758         picture->data[2] = NULL;
 759         picture->data[3] = NULL;
 760         return size2 + 256 * 4;
 761     default:
 762         picture->data[0] = NULL;
 763         picture->data[1] = NULL;
 764         picture->data[2] = NULL;
 765         picture->data[3] = NULL;
 766         return -1;
 767     }
 768 }
 769
 770 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
 771                    enum PixelFormat pix_fmt, int width, int height)
 772 {
 773
 774     if(avcodec_check_dimensions(NULL, width, height))
 775         return -1;
 776
 777     if (ff_fill_linesize(picture, pix_fmt, width))
 778         return -1;
 779
 780     return ff_fill_pointer(picture, ptr, pix_fmt, height);
 781 }
 782
 783 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
 784                      unsigned char *dest, int dest_size)
 785 {
 786     const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
 787     int i, j, w, ow, h, oh, data_planes;
 788     const unsigned char* s;
 789     int size = avpicture_get_size(pix_fmt, width, height);
 790
 791     if (size > dest_size || size < 0)
 792         return -1;
 793
 794     if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
 795         if (pix_fmt == PIX_FMT_YUYV422 ||
 796             pix_fmt == PIX_FMT_UYVY422 ||
 797             pix_fmt == PIX_FMT_BGR565 ||
 798             pix_fmt == PIX_FMT_BGR555 ||
 799             pix_fmt == PIX_FMT_RGB565 ||
 800             pix_fmt == PIX_FMT_RGB555)
 801             w = width * 2;
 802         else if (pix_fmt == PIX_FMT_UYYVYY411)
 803           w = width + width/2;
 804         else if (pix_fmt == PIX_FMT_PAL8)
 805           w = width;
 806         else
 807           w = width * (pf->depth * pf->nb_channels / 8);
 808
 809         data_planes = 1;
 810         h = height;
 811     } else {
 812         data_planes = pf->nb_channels;
 813         w = (width*pf->depth + 7)/8;
 814         h = height;
 815     }
 816
 817     ow = w;
 818     oh = h;
 819
 820     for (i=0; i<data_planes; i++) {
 821          if (i == 1) {
 822              w = width >> pf->x_chroma_shift;
 823              h = height >> pf->y_chroma_shift;
 824          } else if (i == 3) {
 825              w = ow;
 826              h = oh;
 827          }
 828          s = src->data[i];
 829          for(j=0; j<h; j++) {
 830              memcpy(dest, s, w);
 831              dest += w;
 832              s += src->linesize[i];
 833          }
 834     }
 835
 836     if (pf->pixel_type == FF_PIXEL_PALETTE)
 837         memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
 838
 839     return size;
 840 }
 841
 842 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
 843 {
 844     AVPicture dummy_pict;
 845     if(avcodec_check_dimensions(NULL, width, height))
 846         return -1;
 847     switch (pix_fmt) {
 848     case PIX_FMT_RGB8:
 849     case PIX_FMT_BGR8:
 850     case PIX_FMT_RGB4_BYTE:
 851     case PIX_FMT_BGR4_BYTE:
 852     case PIX_FMT_GRAY8:
 853         // do not include palette for these pseudo-paletted formats
 854         return width * height;
 855     }
 856     return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
 857 }
 858
 859 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
 860                              int has_alpha)
 861 {
 862     const PixFmtInfo *pf, *ps;
 863     int loss;
 864
 865     ps = &pix_fmt_info[src_pix_fmt];
 866     pf = &pix_fmt_info[dst_pix_fmt];
 867
 868     /* compute loss */
 869     loss = 0;
 870     pf = &pix_fmt_info[dst_pix_fmt];
 871     if (pf->depth < ps->depth ||
 872         (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
 873         loss |= FF_LOSS_DEPTH;
 874     if (pf->x_chroma_shift > ps->x_chroma_shift ||
 875         pf->y_chroma_shift > ps->y_chroma_shift)
 876         loss |= FF_LOSS_RESOLUTION;
 877     switch(pf->color_type) {
 878     case FF_COLOR_RGB:
 879         if (ps->color_type != FF_COLOR_RGB &&
 880             ps->color_type != FF_COLOR_GRAY)
 881             loss |= FF_LOSS_COLORSPACE;
 882         break;
 883     case FF_COLOR_GRAY:
 884         if (ps->color_type != FF_COLOR_GRAY)
 885             loss |= FF_LOSS_COLORSPACE;
 886         break;
 887     case FF_COLOR_YUV:
 888         if (ps->color_type != FF_COLOR_YUV)
 889             loss |= FF_LOSS_COLORSPACE;
 890         break;
 891     case FF_COLOR_YUV_JPEG:
 892         if (ps->color_type != FF_COLOR_YUV_JPEG &&
 893             ps->color_type != FF_COLOR_YUV &&
 894             ps->color_type != FF_COLOR_GRAY)
 895             loss |= FF_LOSS_COLORSPACE;
 896         break;
 897     default:
 898         /* fail safe test */
 899         if (ps->color_type != pf->color_type)
 900             loss |= FF_LOSS_COLORSPACE;
 901         break;
 902     }
 903     if (pf->color_type == FF_COLOR_GRAY &&
 904         ps->color_type != FF_COLOR_GRAY)
 905         loss |= FF_LOSS_CHROMA;
 906     if (!pf->is_alpha && (ps->is_alpha && has_alpha))
 907         loss |= FF_LOSS_ALPHA;
 908     if (pf->pixel_type == FF_PIXEL_PALETTE &&
 909         (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
 910         loss |= FF_LOSS_COLORQUANT;
 911     return loss;
 912 }
 913
 914 static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
 915 {
 916     int bits;
 917     const PixFmtInfo *pf;
 918
 919     pf = &pix_fmt_info[pix_fmt];
 920     switch(pf->pixel_type) {
 921     case FF_PIXEL_PACKED:
 922         switch(pix_fmt) {
 923         case PIX_FMT_YUYV422:
 924         case PIX_FMT_UYVY422:
 925         case PIX_FMT_RGB565:
 926         case PIX_FMT_RGB555:
 927         case PIX_FMT_BGR565:
 928         case PIX_FMT_BGR555:
 929             bits = 16;
 930             break;
 931         case PIX_FMT_UYYVYY411:
 932             bits = 12;
 933             break;
 934         default:
 935             bits = pf->depth * pf->nb_channels;
 936             break;
 937         }
 938         break;
 939     case FF_PIXEL_PLANAR:
 940         if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
 941             bits = pf->depth * pf->nb_channels;
 942         } else {
 943             bits = pf->depth + ((2 * pf->depth) >>
 944                                 (pf->x_chroma_shift + pf->y_chroma_shift));
 945         }
 946         break;
 947     case FF_PIXEL_PALETTE:
 948         bits = 8;
 949         break;
 950     default:
 951         bits = -1;
 952         break;
 953     }
 954     return bits;
 955 }
 956
 957 static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
 958                                       enum PixelFormat src_pix_fmt,
 959                                       int has_alpha,
 960                                       int loss_mask)
 961 {
 962     int dist, i, loss, min_dist;
 963     enum PixelFormat dst_pix_fmt;
 964
 965     /* find exact color match with smallest size */
 966     dst_pix_fmt = -1;
 967     min_dist = 0x7fffffff;
 968     for(i = 0;i < PIX_FMT_NB; i++) {
 969         if (pix_fmt_mask & (1ULL << i)) {
 970             loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
 971             if (loss == 0) {
 972                 dist = avg_bits_per_pixel(i);
 973                 if (dist < min_dist) {
 974                     min_dist = dist;
 975                     dst_pix_fmt = i;
 976                 }
 977             }
 978         }
 979     }
 980     return dst_pix_fmt;
 981 }
 982
 983 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
 984                               int has_alpha, int *loss_ptr)
 985 {
 986     enum PixelFormat dst_pix_fmt;
 987     int loss_mask, i;
 988     static const int loss_mask_order[] = {
 989         ~0, /* no loss first */
 990         ~FF_LOSS_ALPHA,
 991         ~FF_LOSS_RESOLUTION,
 992         ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
 993         ~FF_LOSS_COLORQUANT,
 994         ~FF_LOSS_DEPTH,
 995         0,
 996     };
 997
 998     /* try with successive loss */
 999     i = 0;
1000     for(;;) {
1001         loss_mask = loss_mask_order[i++];
1002         dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
1003                                                  has_alpha, loss_mask);
1004         if (dst_pix_fmt >= 0)
1005             goto found;
1006         if (loss_mask == 0)
1007             break;
1008     }
1009     return -1;
1010  found:
1011     if (loss_ptr)
1012         *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
1013     return dst_pix_fmt;
1014 }
1015
1016 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
1017                            const uint8_t *src, int src_wrap,
1018                            int width, int height)
1019 {
1020     if((!dst) || (!src))
1021         return;
1022     for(;height > 0; height--) {
1023         memcpy(dst, src, width);
1024         dst += dst_wrap;
1025         src += src_wrap;
1026     }
1027 }
1028
1029 int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
1030 {
1031     int bits;
1032     const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1033
1034     pf = &pix_fmt_info[pix_fmt];
1035     switch(pf->pixel_type) {
1036     case FF_PIXEL_PACKED:
1037         switch(pix_fmt) {
1038         case PIX_FMT_YUYV422:
1039         case PIX_FMT_UYVY422:
1040         case PIX_FMT_RGB565:
1041         case PIX_FMT_RGB555:
1042         case PIX_FMT_BGR565:
1043         case PIX_FMT_BGR555:
1044             bits = 16;
1045             break;
1046         case PIX_FMT_UYYVYY411:
1047             bits = 12;
1048             break;
1049         default:
1050             bits = pf->depth * pf->nb_channels;
1051             break;
1052         }
1053         return (width * bits + 7) >> 3;
1054         break;
1055     case FF_PIXEL_PLANAR:
1056             if (plane == 1 || plane == 2)
1057                 width= -((-width)>>pf->x_chroma_shift);
1058
1059             return (width * pf->depth + 7) >> 3;
1060         break;
1061     case FF_PIXEL_PALETTE:
1062         if (plane == 0)
1063             return width;
1064         break;
1065     }
1066
1067     return -1;
1068 }
1069
1070 void av_picture_copy(AVPicture *dst, const AVPicture *src,
1071                      enum PixelFormat pix_fmt, int width, int height)
1072 {
1073     int i;
1074     const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1075
1076     pf = &pix_fmt_info[pix_fmt];
1077     switch(pf->pixel_type) {
1078     case FF_PIXEL_PACKED:
1079     case FF_PIXEL_PLANAR:
1080         for(i = 0; i < pf->nb_channels; i++) {
1081             int h;
1082             int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
1083             h = height;
1084             if (i == 1 || i == 2) {
1085                 h= -((-height)>>pf->y_chroma_shift);
1086             }
1087             ff_img_copy_plane(dst->data[i], dst->linesize[i],
1088                            src->data[i], src->linesize[i],
1089                            bwidth, h);
1090         }
1091         break;
1092     case FF_PIXEL_PALETTE:
1093         ff_img_copy_plane(dst->data[0], dst->linesize[0],
1094                        src->data[0], src->linesize[0],
1095                        width, height);
1096         /* copy the palette */
1097         ff_img_copy_plane(dst->data[1], dst->linesize[1],
1098                        src->data[1], src->linesize[1],
1099                        4, 256);
1100         break;
1101     }
1102 }
1103
1104 /* 2x2 -> 1x1 */
1105 void ff_shrink22(uint8_t *dst, int dst_wrap,
1106                      const uint8_t *src, int src_wrap,
1107                      int width, int height)
1108 {
1109     int w;
1110     const uint8_t *s1, *s2;
1111     uint8_t *d;
1112
1113     for(;height > 0; height--) {
1114         s1 = src;
1115         s2 = s1 + src_wrap;
1116         d = dst;
1117         for(w = width;w >= 4; w-=4) {
1118             d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1119             d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1120             d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1121             d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1122             s1 += 8;
1123             s2 += 8;
1124             d += 4;
1125         }
1126         for(;w > 0; w--) {
1127             d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1128             s1 += 2;
1129             s2 += 2;
1130             d++;
1131         }
1132         src += 2 * src_wrap;
1133         dst += dst_wrap;
1134     }
1135 }
1136
1137 /* 4x4 -> 1x1 */
1138 void ff_shrink44(uint8_t *dst, int dst_wrap,
1139                      const uint8_t *src, int src_wrap,
1140                      int width, int height)
1141 {
1142     int w;
1143     const uint8_t *s1, *s2, *s3, *s4;
1144     uint8_t *d;
1145
1146     for(;height > 0; height--) {
1147         s1 = src;
1148         s2 = s1 + src_wrap;
1149         s3 = s2 + src_wrap;
1150         s4 = s3 + src_wrap;
1151         d = dst;
1152         for(w = width;w > 0; w--) {
1153             d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1154                     s2[0] + s2[1] + s2[2] + s2[3] +
1155                     s3[0] + s3[1] + s3[2] + s3[3] +
1156                     s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1157             s1 += 4;
1158             s2 += 4;
1159             s3 += 4;
1160             s4 += 4;
1161             d++;
1162         }
1163         src += 4 * src_wrap;
1164         dst += dst_wrap;
1165     }
1166 }
1167
1168 /* 8x8 -> 1x1 */
1169 void ff_shrink88(uint8_t *dst, int dst_wrap,
1170                      const uint8_t *src, int src_wrap,
1171                      int width, int height)
1172 {
1173     int w, i;
1174
1175     for(;height > 0; height--) {
1176         for(w = width;w > 0; w--) {
1177             int tmp=0;
1178             for(i=0; i<8; i++){
1179                 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1180                 src += src_wrap;
1181             }
1182             *(dst++) = (tmp + 32)>>6;
1183             src += 8 - 8*src_wrap;
1184         }
1185         src += 8*src_wrap - 8*width;
1186         dst += dst_wrap - width;
1187     }
1188 }
1189
1190
1191 int avpicture_alloc(AVPicture *picture,
1192                     enum PixelFormat pix_fmt, int width, int height)
1193 {
1194     int size;
1195     void *ptr;
1196
1197     size = avpicture_fill(picture, NULL, pix_fmt, width, height);
1198     if(size<0)
1199         goto fail;
1200     ptr = av_malloc(size);
1201     if (!ptr)
1202         goto fail;
1203     avpicture_fill(picture, ptr, pix_fmt, width, height);
1204     if(picture->data[1] && !picture->data[2])
1205         ff_set_systematic_pal((uint32_t*)picture->data[1], pix_fmt);
1206
1207     return 0;
1208  fail:
1209     memset(picture, 0, sizeof(AVPicture));
1210     return -1;
1211 }
1212
1213 void avpicture_free(AVPicture *picture)
1214 {
1215     av_free(picture->data[0]);
1216 }
1217
1218 /* return true if yuv planar */
1219 static inline int is_yuv_planar(const PixFmtInfo *ps)
1220 {
1221     return (ps->color_type == FF_COLOR_YUV ||
1222             ps->color_type == FF_COLOR_YUV_JPEG) &&
1223         ps->pixel_type == FF_PIXEL_PLANAR;
1224 }
1225
1226 int av_picture_crop(AVPicture *dst, const AVPicture *src,
1227               int pix_fmt, int top_band, int left_band)
1228 {
1229     int y_shift;
1230     int x_shift;
1231
1232     if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
1233         return -1;
1234
1235     y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
1236     x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
1237
1238     dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
1239     dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
1240     dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
1241
1242     dst->linesize[0] = src->linesize[0];
1243     dst->linesize[1] = src->linesize[1];
1244     dst->linesize[2] = src->linesize[2];
1245     return 0;
1246 }
1247
1248 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
1249                    enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
1250             int *color)
1251 {
1252     uint8_t *optr;
1253     int y_shift;
1254     int x_shift;
1255     int yheight;
1256     int i, y;
1257
1258     if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
1259         !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
1260
1261     for (i = 0; i < 3; i++) {
1262         x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
1263         y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
1264
1265         if (padtop || padleft) {
1266             memset(dst->data[i], color[i],
1267                 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
1268         }
1269
1270         if (padleft || padright) {
1271             optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1272                 (dst->linesize[i] - (padright >> x_shift));
1273             yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1274             for (y = 0; y < yheight; y++) {
1275                 memset(optr, color[i], (padleft + padright) >> x_shift);
1276                 optr += dst->linesize[i];
1277             }
1278         }
1279
1280         if (src) { /* first line */
1281             uint8_t *iptr = src->data[i];
1282             optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1283                     (padleft >> x_shift);
1284             memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
1285             iptr += src->linesize[i];
1286             optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1287                 (dst->linesize[i] - (padright >> x_shift));
1288             yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1289             for (y = 0; y < yheight; y++) {
1290                 memset(optr, color[i], (padleft + padright) >> x_shift);
1291                 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
1292                        (width - padleft - padright) >> x_shift);
1293                 iptr += src->linesize[i];
1294                 optr += dst->linesize[i];
1295             }
1296         }
1297
1298         if (padbottom || padright) {
1299             optr = dst->data[i] + dst->linesize[i] *
1300                 ((height - padbottom) >> y_shift) - (padright >> x_shift);
1301             memset(optr, color[i],dst->linesize[i] *
1302                 (padbottom >> y_shift) + (padright >> x_shift));
1303         }
1304     }
1305     return 0;
1306 }
1307
1308 /* NOTE: we scan all the pixels to have an exact information */
1309 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
1310 {
1311     const unsigned char *p;
1312     int src_wrap, ret, x, y;
1313     unsigned int a;
1314     uint32_t *palette = (uint32_t *)src->data[1];
1315
1316     p = src->data[0];
1317     src_wrap = src->linesize[0] - width;
1318     ret = 0;
1319     for(y=0;y<height;y++) {
1320         for(x=0;x<width;x++) {
1321             a = palette[p[0]] >> 24;
1322             if (a == 0x00) {
1323                 ret |= FF_ALPHA_TRANSP;
1324             } else if (a != 0xff) {
1325                 ret |= FF_ALPHA_SEMI_TRANSP;
1326             }
1327             p++;
1328         }
1329         p += src_wrap;
1330     }
1331     return ret;
1332 }
1333
1334 int img_get_alpha_info(const AVPicture *src,
1335                        enum PixelFormat pix_fmt, int width, int height)
1336 {
1337     const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1338     int ret;
1339
1340     pf = &pix_fmt_info[pix_fmt];
1341     /* no alpha can be represented in format */
1342     if (!pf->is_alpha)
1343         return 0;
1344     switch(pix_fmt) {
1345     case PIX_FMT_PAL8:
1346         ret = get_alpha_info_pal8(src, width, height);
1347         break;
1348     default:
1349         /* we do not know, so everything is indicated */
1350         ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
1351         break;
1352     }
1353     return ret;
1354 }
1355
1356 #if HAVE_MMX
1357 #define DEINT_INPLACE_LINE_LUM \
1358                     movd_m2r(lum_m4[0],mm0);\
1359                     movd_m2r(lum_m3[0],mm1);\
1360                     movd_m2r(lum_m2[0],mm2);\
1361                     movd_m2r(lum_m1[0],mm3);\
1362                     movd_m2r(lum[0],mm4);\
1363                     punpcklbw_r2r(mm7,mm0);\
1364                     movd_r2m(mm2,lum_m4[0]);\
1365                     punpcklbw_r2r(mm7,mm1);\
1366                     punpcklbw_r2r(mm7,mm2);\
1367                     punpcklbw_r2r(mm7,mm3);\
1368                     punpcklbw_r2r(mm7,mm4);\
1369                     paddw_r2r(mm3,mm1);\
1370                     psllw_i2r(1,mm2);\
1371                     paddw_r2r(mm4,mm0);\
1372                     psllw_i2r(2,mm1);\
1373                     paddw_r2r(mm6,mm2);\
1374                     paddw_r2r(mm2,mm1);\
1375                     psubusw_r2r(mm0,mm1);\
1376                     psrlw_i2r(3,mm1);\
1377                     packuswb_r2r(mm7,mm1);\
1378                     movd_r2m(mm1,lum_m2[0]);
1379
1380 #define DEINT_LINE_LUM \
1381                     movd_m2r(lum_m4[0],mm0);\
1382                     movd_m2r(lum_m3[0],mm1);\
1383                     movd_m2r(lum_m2[0],mm2);\
1384                     movd_m2r(lum_m1[0],mm3);\
1385                     movd_m2r(lum[0],mm4);\
1386                     punpcklbw_r2r(mm7,mm0);\
1387                     punpcklbw_r2r(mm7,mm1);\
1388                     punpcklbw_r2r(mm7,mm2);\
1389                     punpcklbw_r2r(mm7,mm3);\
1390                     punpcklbw_r2r(mm7,mm4);\
1391                     paddw_r2r(mm3,mm1);\
1392                     psllw_i2r(1,mm2);\
1393                     paddw_r2r(mm4,mm0);\
1394                     psllw_i2r(2,mm1);\
1395                     paddw_r2r(mm6,mm2);\
1396                     paddw_r2r(mm2,mm1);\
1397                     psubusw_r2r(mm0,mm1);\
1398                     psrlw_i2r(3,mm1);\
1399                     packuswb_r2r(mm7,mm1);\
1400                     movd_r2m(mm1,dst[0]);
1401 #endif
1402
1403 /* filter parameters: [-1 4 2 4 -1] // 8 */
1404 static void deinterlace_line(uint8_t *dst,
1405                              const uint8_t *lum_m4, const uint8_t *lum_m3,
1406                              const uint8_t *lum_m2, const uint8_t *lum_m1,
1407                              const uint8_t *lum,
1408                              int size)
1409 {
1410 #if !HAVE_MMX
1411     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1412     int sum;
1413
1414     for(;size > 0;size--) {
1415         sum = -lum_m4[0];
1416         sum += lum_m3[0] << 2;
1417         sum += lum_m2[0] << 1;
1418         sum += lum_m1[0] << 2;
1419         sum += -lum[0];
1420         dst[0] = cm[(sum + 4) >> 3];
1421         lum_m4++;
1422         lum_m3++;
1423         lum_m2++;
1424         lum_m1++;
1425         lum++;
1426         dst++;
1427     }
1428 #else
1429
1430     {
1431         pxor_r2r(mm7,mm7);
1432         movq_m2r(ff_pw_4,mm6);
1433     }
1434     for (;size > 3; size-=4) {
1435         DEINT_LINE_LUM
1436         lum_m4+=4;
1437         lum_m3+=4;
1438         lum_m2+=4;
1439         lum_m1+=4;
1440         lum+=4;
1441         dst+=4;
1442     }
1443 #endif
1444 }
1445 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
1446                              int size)
1447 {
1448 #if !HAVE_MMX
1449     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1450     int sum;
1451
1452     for(;size > 0;size--) {
1453         sum = -lum_m4[0];
1454         sum += lum_m3[0] << 2;
1455         sum += lum_m2[0] << 1;
1456         lum_m4[0]=lum_m2[0];
1457         sum += lum_m1[0] << 2;
1458         sum += -lum[0];
1459         lum_m2[0] = cm[(sum + 4) >> 3];
1460         lum_m4++;
1461         lum_m3++;
1462         lum_m2++;
1463         lum_m1++;
1464         lum++;
1465     }
1466 #else
1467
1468     {
1469         pxor_r2r(mm7,mm7);
1470         movq_m2r(ff_pw_4,mm6);
1471     }
1472     for (;size > 3; size-=4) {
1473         DEINT_INPLACE_LINE_LUM
1474         lum_m4+=4;
1475         lum_m3+=4;
1476         lum_m2+=4;
1477         lum_m1+=4;
1478         lum+=4;
1479     }
1480 #endif
1481 }
1482
1483 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
1484    top field is copied as is, but the bottom field is deinterlaced
1485    against the top field. */
1486 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
1487                                     const uint8_t *src1, int src_wrap,
1488                                     int width, int height)
1489 {
1490     const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
1491     int y;
1492
1493     src_m2 = src1;
1494     src_m1 = src1;
1495     src_0=&src_m1[src_wrap];
1496     src_p1=&src_0[src_wrap];
1497     src_p2=&src_p1[src_wrap];
1498     for(y=0;y<(height-2);y+=2) {
1499         memcpy(dst,src_m1,width);
1500         dst += dst_wrap;
1501         deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
1502         src_m2 = src_0;
1503         src_m1 = src_p1;
1504         src_0 = src_p2;
1505         src_p1 += 2*src_wrap;
1506         src_p2 += 2*src_wrap;
1507         dst += dst_wrap;
1508     }
1509     memcpy(dst,src_m1,width);
1510     dst += dst_wrap;
1511     /* do last line */
1512     deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
1513 }
1514
1515 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
1516                                              int width, int height)
1517 {
1518     uint8_t *src_m1, *src_0, *src_p1, *src_p2;
1519     int y;
1520     uint8_t *buf;
1521     buf = (uint8_t*)av_malloc(width);
1522
1523     src_m1 = src1;
1524     memcpy(buf,src_m1,width);
1525     src_0=&src_m1[src_wrap];
1526     src_p1=&src_0[src_wrap];
1527     src_p2=&src_p1[src_wrap];
1528     for(y=0;y<(height-2);y+=2) {
1529         deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
1530         src_m1 = src_p1;
1531         src_0 = src_p2;
1532         src_p1 += 2*src_wrap;
1533         src_p2 += 2*src_wrap;
1534     }
1535     /* do last line */
1536     deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
1537     av_free(buf);
1538 }
1539
1540 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1541                           enum PixelFormat pix_fmt, int width, int height)
1542 {
1543     int i;
1544
1545     if (pix_fmt != PIX_FMT_YUV420P &&
1546         pix_fmt != PIX_FMT_YUV422P &&
1547         pix_fmt != PIX_FMT_YUV444P &&
1548         pix_fmt != PIX_FMT_YUV411P &&
1549         pix_fmt != PIX_FMT_GRAY8)
1550         return -1;
1551     if ((width & 3) != 0 || (height & 3) != 0)
1552         return -1;
1553
1554     for(i=0;i<3;i++) {
1555         if (i == 1) {
1556             switch(pix_fmt) {
1557             case PIX_FMT_YUV420P:
1558                 width >>= 1;
1559                 height >>= 1;
1560                 break;
1561             case PIX_FMT_YUV422P:
1562                 width >>= 1;
1563                 break;
1564             case PIX_FMT_YUV411P:
1565                 width >>= 2;
1566                 break;
1567             default:
1568                 break;
1569             }
1570             if (pix_fmt == PIX_FMT_GRAY8) {
1571                 break;
1572             }
1573         }
1574         if (src == dst) {
1575             deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
1576                                  width, height);
1577         } else {
1578             deinterlace_bottom_field(dst->data[i],dst->linesize[i],
1579                                         src->data[i], src->linesize[i],
1580                                         width, height);
1581         }
1582     }
1583     emms_c();
1584     return 0;
1585 }
1586