libavcodec/imgconvert.c

   1 /*
   2  * Misc image convertion 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 imgconvert.c
  24  * Misc image convertion 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
  36 #ifdef USE_FASTMEMCPY
  37 #include "libvo/fastmemcpy.h"
  38 #endif
  39
  40 #ifdef HAVE_MMX
  41 #include "i386/mmx.h"
  42 #endif
  43
  44 #define xglue(x, y) x ## y
  45 #define glue(x, y) xglue(x, y)
  46
  47 #define FF_COLOR_RGB      0 /**< RGB color space */
  48 #define FF_COLOR_GRAY     1 /**< gray color space */
  49 #define FF_COLOR_YUV      2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
  50 #define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
  51
  52 #define FF_PIXEL_PLANAR   0 /**< each channel has one component in AVPicture */
  53 #define FF_PIXEL_PACKED   1 /**< only one components containing all the channels */
  54 #define FF_PIXEL_PALETTE  2  /**< one components containing indexes for a palette */
  55
  56 typedef struct PixFmtInfo {
  57     const char *name;
  58     uint8_t nb_channels;     /**< number of channels (including alpha) */
  59     uint8_t color_type;      /**< color type (see FF_COLOR_xxx constants) */
  60     uint8_t pixel_type;      /**< pixel storage type (see FF_PIXEL_xxx constants) */
  61     uint8_t is_alpha : 1;    /**< true if alpha can be specified */
  62     uint8_t x_chroma_shift;  /**< X chroma subsampling factor is 2 ^ shift */
  63     uint8_t y_chroma_shift;  /**< Y chroma subsampling factor is 2 ^ shift */
  64     uint8_t depth;           /**< bit depth of the color components */
  65 } PixFmtInfo;
  66
  67 /* this table gives more information about formats */
  68 static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
  69     /* YUV formats */
  70     [PIX_FMT_YUV420P] = {
  71         .name = "yuv420p",
  72         .nb_channels = 3,
  73         .color_type = FF_COLOR_YUV,
  74         .pixel_type = FF_PIXEL_PLANAR,
  75         .depth = 8,
  76         .x_chroma_shift = 1, .y_chroma_shift = 1,
  77     },
  78     [PIX_FMT_YUV422P] = {
  79         .name = "yuv422p",
  80         .nb_channels = 3,
  81         .color_type = FF_COLOR_YUV,
  82         .pixel_type = FF_PIXEL_PLANAR,
  83         .depth = 8,
  84         .x_chroma_shift = 1, .y_chroma_shift = 0,
  85     },
  86     [PIX_FMT_YUV444P] = {
  87         .name = "yuv444p",
  88         .nb_channels = 3,
  89         .color_type = FF_COLOR_YUV,
  90         .pixel_type = FF_PIXEL_PLANAR,
  91         .depth = 8,
  92         .x_chroma_shift = 0, .y_chroma_shift = 0,
  93     },
  94     [PIX_FMT_YUYV422] = {
  95         .name = "yuyv422",
  96         .nb_channels = 1,
  97         .color_type = FF_COLOR_YUV,
  98         .pixel_type = FF_PIXEL_PACKED,
  99         .depth = 8,
 100         .x_chroma_shift = 1, .y_chroma_shift = 0,
 101     },
 102     [PIX_FMT_UYVY422] = {
 103         .name = "uyvy422",
 104         .nb_channels = 1,
 105         .color_type = FF_COLOR_YUV,
 106         .pixel_type = FF_PIXEL_PACKED,
 107         .depth = 8,
 108         .x_chroma_shift = 1, .y_chroma_shift = 0,
 109     },
 110     [PIX_FMT_YUV410P] = {
 111         .name = "yuv410p",
 112         .nb_channels = 3,
 113         .color_type = FF_COLOR_YUV,
 114         .pixel_type = FF_PIXEL_PLANAR,
 115         .depth = 8,
 116         .x_chroma_shift = 2, .y_chroma_shift = 2,
 117     },
 118     [PIX_FMT_YUV411P] = {
 119         .name = "yuv411p",
 120         .nb_channels = 3,
 121         .color_type = FF_COLOR_YUV,
 122         .pixel_type = FF_PIXEL_PLANAR,
 123         .depth = 8,
 124         .x_chroma_shift = 2, .y_chroma_shift = 0,
 125     },
 126
 127     /* JPEG YUV */
 128     [PIX_FMT_YUVJ420P] = {
 129         .name = "yuvj420p",
 130         .nb_channels = 3,
 131         .color_type = FF_COLOR_YUV_JPEG,
 132         .pixel_type = FF_PIXEL_PLANAR,
 133         .depth = 8,
 134         .x_chroma_shift = 1, .y_chroma_shift = 1,
 135     },
 136     [PIX_FMT_YUVJ422P] = {
 137         .name = "yuvj422p",
 138         .nb_channels = 3,
 139         .color_type = FF_COLOR_YUV_JPEG,
 140         .pixel_type = FF_PIXEL_PLANAR,
 141         .depth = 8,
 142         .x_chroma_shift = 1, .y_chroma_shift = 0,
 143     },
 144     [PIX_FMT_YUVJ444P] = {
 145         .name = "yuvj444p",
 146         .nb_channels = 3,
 147         .color_type = FF_COLOR_YUV_JPEG,
 148         .pixel_type = FF_PIXEL_PLANAR,
 149         .depth = 8,
 150         .x_chroma_shift = 0, .y_chroma_shift = 0,
 151     },
 152
 153     /* RGB formats */
 154     [PIX_FMT_RGB24] = {
 155         .name = "rgb24",
 156         .nb_channels = 3,
 157         .color_type = FF_COLOR_RGB,
 158         .pixel_type = FF_PIXEL_PACKED,
 159         .depth = 8,
 160         .x_chroma_shift = 0, .y_chroma_shift = 0,
 161     },
 162     [PIX_FMT_BGR24] = {
 163         .name = "bgr24",
 164         .nb_channels = 3,
 165         .color_type = FF_COLOR_RGB,
 166         .pixel_type = FF_PIXEL_PACKED,
 167         .depth = 8,
 168         .x_chroma_shift = 0, .y_chroma_shift = 0,
 169     },
 170     [PIX_FMT_RGB32] = {
 171         .name = "rgb32",
 172         .nb_channels = 4, .is_alpha = 1,
 173         .color_type = FF_COLOR_RGB,
 174         .pixel_type = FF_PIXEL_PACKED,
 175         .depth = 8,
 176         .x_chroma_shift = 0, .y_chroma_shift = 0,
 177     },
 178     [PIX_FMT_RGB565] = {
 179         .name = "rgb565",
 180         .nb_channels = 3,
 181         .color_type = FF_COLOR_RGB,
 182         .pixel_type = FF_PIXEL_PACKED,
 183         .depth = 5,
 184         .x_chroma_shift = 0, .y_chroma_shift = 0,
 185     },
 186     [PIX_FMT_RGB555] = {
 187         .name = "rgb555",
 188         .nb_channels = 3,
 189         .color_type = FF_COLOR_RGB,
 190         .pixel_type = FF_PIXEL_PACKED,
 191         .depth = 5,
 192         .x_chroma_shift = 0, .y_chroma_shift = 0,
 193     },
 194
 195     /* gray / mono formats */
 196     [PIX_FMT_GRAY16BE] = {
 197         .name = "gray16be",
 198         .nb_channels = 1,
 199         .color_type = FF_COLOR_GRAY,
 200         .pixel_type = FF_PIXEL_PLANAR,
 201         .depth = 16,
 202     },
 203     [PIX_FMT_GRAY16LE] = {
 204         .name = "gray16le",
 205         .nb_channels = 1,
 206         .color_type = FF_COLOR_GRAY,
 207         .pixel_type = FF_PIXEL_PLANAR,
 208         .depth = 16,
 209     },
 210     [PIX_FMT_GRAY8] = {
 211         .name = "gray",
 212         .nb_channels = 1,
 213         .color_type = FF_COLOR_GRAY,
 214         .pixel_type = FF_PIXEL_PLANAR,
 215         .depth = 8,
 216     },
 217     [PIX_FMT_MONOWHITE] = {
 218         .name = "monow",
 219         .nb_channels = 1,
 220         .color_type = FF_COLOR_GRAY,
 221         .pixel_type = FF_PIXEL_PLANAR,
 222         .depth = 1,
 223     },
 224     [PIX_FMT_MONOBLACK] = {
 225         .name = "monob",
 226         .nb_channels = 1,
 227         .color_type = FF_COLOR_GRAY,
 228         .pixel_type = FF_PIXEL_PLANAR,
 229         .depth = 1,
 230     },
 231
 232     /* paletted formats */
 233     [PIX_FMT_PAL8] = {
 234         .name = "pal8",
 235         .nb_channels = 4, .is_alpha = 1,
 236         .color_type = FF_COLOR_RGB,
 237         .pixel_type = FF_PIXEL_PALETTE,
 238         .depth = 8,
 239     },
 240     [PIX_FMT_XVMC_MPEG2_MC] = {
 241         .name = "xvmcmc",
 242     },
 243     [PIX_FMT_XVMC_MPEG2_IDCT] = {
 244         .name = "xvmcidct",
 245     },
 246     [PIX_FMT_UYYVYY411] = {
 247         .name = "uyyvyy411",
 248         .nb_channels = 1,
 249         .color_type = FF_COLOR_YUV,
 250         .pixel_type = FF_PIXEL_PACKED,
 251         .depth = 8,
 252         .x_chroma_shift = 2, .y_chroma_shift = 0,
 253     },
 254     [PIX_FMT_BGR32] = {
 255         .name = "bgr32",
 256         .nb_channels = 4, .is_alpha = 1,
 257         .color_type = FF_COLOR_RGB,
 258         .pixel_type = FF_PIXEL_PACKED,
 259         .depth = 8,
 260         .x_chroma_shift = 0, .y_chroma_shift = 0,
 261     },
 262     [PIX_FMT_BGR565] = {
 263         .name = "bgr565",
 264         .nb_channels = 3,
 265         .color_type = FF_COLOR_RGB,
 266         .pixel_type = FF_PIXEL_PACKED,
 267         .depth = 5,
 268         .x_chroma_shift = 0, .y_chroma_shift = 0,
 269     },
 270     [PIX_FMT_BGR555] = {
 271         .name = "bgr555",
 272         .nb_channels = 3,
 273         .color_type = FF_COLOR_RGB,
 274         .pixel_type = FF_PIXEL_PACKED,
 275         .depth = 5,
 276         .x_chroma_shift = 0, .y_chroma_shift = 0,
 277     },
 278     [PIX_FMT_RGB8] = {
 279         .name = "rgb8",
 280         .nb_channels = 1,
 281         .color_type = FF_COLOR_RGB,
 282         .pixel_type = FF_PIXEL_PACKED,
 283         .depth = 8,
 284         .x_chroma_shift = 0, .y_chroma_shift = 0,
 285     },
 286     [PIX_FMT_RGB4] = {
 287         .name = "rgb4",
 288         .nb_channels = 1,
 289         .color_type = FF_COLOR_RGB,
 290         .pixel_type = FF_PIXEL_PACKED,
 291         .depth = 4,
 292         .x_chroma_shift = 0, .y_chroma_shift = 0,
 293     },
 294     [PIX_FMT_RGB4_BYTE] = {
 295         .name = "rgb4_byte",
 296         .nb_channels = 1,
 297         .color_type = FF_COLOR_RGB,
 298         .pixel_type = FF_PIXEL_PACKED,
 299         .depth = 8,
 300         .x_chroma_shift = 0, .y_chroma_shift = 0,
 301     },
 302     [PIX_FMT_BGR8] = {
 303         .name = "bgr8",
 304         .nb_channels = 1,
 305         .color_type = FF_COLOR_RGB,
 306         .pixel_type = FF_PIXEL_PACKED,
 307         .depth = 8,
 308         .x_chroma_shift = 0, .y_chroma_shift = 0,
 309     },
 310     [PIX_FMT_BGR4] = {
 311         .name = "bgr4",
 312         .nb_channels = 1,
 313         .color_type = FF_COLOR_RGB,
 314         .pixel_type = FF_PIXEL_PACKED,
 315         .depth = 4,
 316         .x_chroma_shift = 0, .y_chroma_shift = 0,
 317     },
 318     [PIX_FMT_BGR4_BYTE] = {
 319         .name = "bgr4_byte",
 320         .nb_channels = 1,
 321         .color_type = FF_COLOR_RGB,
 322         .pixel_type = FF_PIXEL_PACKED,
 323         .depth = 8,
 324         .x_chroma_shift = 0, .y_chroma_shift = 0,
 325     },
 326     [PIX_FMT_NV12] = {
 327         .name = "nv12",
 328         .nb_channels = 2,
 329         .color_type = FF_COLOR_YUV,
 330         .pixel_type = FF_PIXEL_PLANAR,
 331         .depth = 8,
 332         .x_chroma_shift = 1, .y_chroma_shift = 1,
 333     },
 334     [PIX_FMT_NV21] = {
 335         .name = "nv12",
 336         .nb_channels = 2,
 337         .color_type = FF_COLOR_YUV,
 338         .pixel_type = FF_PIXEL_PLANAR,
 339         .depth = 8,
 340         .x_chroma_shift = 1, .y_chroma_shift = 1,
 341     },
 342
 343     [PIX_FMT_BGR32_1] = {
 344         .name = "bgr32_1",
 345         .nb_channels = 4, .is_alpha = 1,
 346         .color_type = FF_COLOR_RGB,
 347         .pixel_type = FF_PIXEL_PACKED,
 348         .depth = 8,
 349         .x_chroma_shift = 0, .y_chroma_shift = 0,
 350     },
 351     [PIX_FMT_RGB32_1] = {
 352         .name = "rgb32_1",
 353         .nb_channels = 4, .is_alpha = 1,
 354         .color_type = FF_COLOR_RGB,
 355         .pixel_type = FF_PIXEL_PACKED,
 356         .depth = 8,
 357         .x_chroma_shift = 0, .y_chroma_shift = 0,
 358     },
 359 };
 360
 361 void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift)
 362 {
 363     *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
 364     *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
 365 }
 366
 367 const char *avcodec_get_pix_fmt_name(int pix_fmt)
 368 {
 369     if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
 370         return "???";
 371     else
 372         return pix_fmt_info[pix_fmt].name;
 373 }
 374
 375 enum PixelFormat avcodec_get_pix_fmt(const char* name)
 376 {
 377     int i;
 378
 379     for (i=0; i < PIX_FMT_NB; i++)
 380          if (!strcmp(pix_fmt_info[i].name, name))
 381              break;
 382     return i;
 383 }
 384
 385 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
 386                    int pix_fmt, int width, int height)
 387 {
 388     int size, w2, h2, size2;
 389     const PixFmtInfo *pinfo;
 390
 391     if(avcodec_check_dimensions(NULL, width, height))
 392         goto fail;
 393
 394     pinfo = &pix_fmt_info[pix_fmt];
 395     size = width * height;
 396     switch(pix_fmt) {
 397     case PIX_FMT_YUV420P:
 398     case PIX_FMT_YUV422P:
 399     case PIX_FMT_YUV444P:
 400     case PIX_FMT_YUV410P:
 401     case PIX_FMT_YUV411P:
 402     case PIX_FMT_YUVJ420P:
 403     case PIX_FMT_YUVJ422P:
 404     case PIX_FMT_YUVJ444P:
 405         w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
 406         h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
 407         size2 = w2 * h2;
 408         picture->data[0] = ptr;
 409         picture->data[1] = picture->data[0] + size;
 410         picture->data[2] = picture->data[1] + size2;
 411         picture->linesize[0] = width;
 412         picture->linesize[1] = w2;
 413         picture->linesize[2] = w2;
 414         return size + 2 * size2;
 415     case PIX_FMT_NV12:
 416     case PIX_FMT_NV21:
 417         w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
 418         h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
 419         size2 = w2 * h2 * 2;
 420         picture->data[0] = ptr;
 421         picture->data[1] = picture->data[0] + size;
 422         picture->data[2] = NULL;
 423         picture->linesize[0] = width;
 424         picture->linesize[1] = w2;
 425         picture->linesize[2] = 0;
 426         return size + 2 * size2;
 427     case PIX_FMT_RGB24:
 428     case PIX_FMT_BGR24:
 429         picture->data[0] = ptr;
 430         picture->data[1] = NULL;
 431         picture->data[2] = NULL;
 432         picture->linesize[0] = width * 3;
 433         return size * 3;
 434     case PIX_FMT_RGB32:
 435     case PIX_FMT_BGR32:
 436     case PIX_FMT_RGB32_1:
 437     case PIX_FMT_BGR32_1:
 438         picture->data[0] = ptr;
 439         picture->data[1] = NULL;
 440         picture->data[2] = NULL;
 441         picture->linesize[0] = width * 4;
 442         return size * 4;
 443     case PIX_FMT_GRAY16BE:
 444     case PIX_FMT_GRAY16LE:
 445     case PIX_FMT_BGR555:
 446     case PIX_FMT_BGR565:
 447     case PIX_FMT_RGB555:
 448     case PIX_FMT_RGB565:
 449     case PIX_FMT_YUYV422:
 450         picture->data[0] = ptr;
 451         picture->data[1] = NULL;
 452         picture->data[2] = NULL;
 453         picture->linesize[0] = width * 2;
 454         return size * 2;
 455     case PIX_FMT_UYVY422:
 456         picture->data[0] = ptr;
 457         picture->data[1] = NULL;
 458         picture->data[2] = NULL;
 459         picture->linesize[0] = width * 2;
 460         return size * 2;
 461     case PIX_FMT_UYYVYY411:
 462         picture->data[0] = ptr;
 463         picture->data[1] = NULL;
 464         picture->data[2] = NULL;
 465         picture->linesize[0] = width + width/2;
 466         return size + size/2;
 467     case PIX_FMT_RGB8:
 468     case PIX_FMT_BGR8:
 469     case PIX_FMT_RGB4_BYTE:
 470     case PIX_FMT_BGR4_BYTE:
 471     case PIX_FMT_GRAY8:
 472         picture->data[0] = ptr;
 473         picture->data[1] = NULL;
 474         picture->data[2] = NULL;
 475         picture->linesize[0] = width;
 476         return size;
 477     case PIX_FMT_RGB4:
 478     case PIX_FMT_BGR4:
 479         picture->data[0] = ptr;
 480         picture->data[1] = NULL;
 481         picture->data[2] = NULL;
 482         picture->linesize[0] = width / 2;
 483         return size / 2;
 484     case PIX_FMT_MONOWHITE:
 485     case PIX_FMT_MONOBLACK:
 486         picture->data[0] = ptr;
 487         picture->data[1] = NULL;
 488         picture->data[2] = NULL;
 489         picture->linesize[0] = (width + 7) >> 3;
 490         return picture->linesize[0] * height;
 491     case PIX_FMT_PAL8:
 492         size2 = (size + 3) & ~3;
 493         picture->data[0] = ptr;
 494         picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
 495         picture->data[2] = NULL;
 496         picture->linesize[0] = width;
 497         picture->linesize[1] = 4;
 498         return size2 + 256 * 4;
 499     default:
 500 fail:
 501         picture->data[0] = NULL;
 502         picture->data[1] = NULL;
 503         picture->data[2] = NULL;
 504         picture->data[3] = NULL;
 505         return -1;
 506     }
 507 }
 508
 509 int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
 510                      unsigned char *dest, int dest_size)
 511 {
 512     const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
 513     int i, j, w, h, data_planes;
 514     const unsigned char* s;
 515     int size = avpicture_get_size(pix_fmt, width, height);
 516
 517     if (size > dest_size || size < 0)
 518         return -1;
 519
 520     if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
 521         if (pix_fmt == PIX_FMT_YUYV422 ||
 522             pix_fmt == PIX_FMT_UYVY422 ||
 523             pix_fmt == PIX_FMT_BGR565 ||
 524             pix_fmt == PIX_FMT_BGR555 ||
 525             pix_fmt == PIX_FMT_RGB565 ||
 526             pix_fmt == PIX_FMT_RGB555)
 527             w = width * 2;
 528         else if (pix_fmt == PIX_FMT_UYYVYY411)
 529           w = width + width/2;
 530         else if (pix_fmt == PIX_FMT_PAL8)
 531           w = width;
 532         else
 533           w = width * (pf->depth * pf->nb_channels / 8);
 534
 535         data_planes = 1;
 536         h = height;
 537     } else {
 538         data_planes = pf->nb_channels;
 539         w = (width*pf->depth + 7)/8;
 540         h = height;
 541     }
 542
 543     for (i=0; i<data_planes; i++) {
 544          if (i == 1) {
 545              w = width >> pf->x_chroma_shift;
 546              h = height >> pf->y_chroma_shift;
 547          }
 548          s = src->data[i];
 549          for(j=0; j<h; j++) {
 550              memcpy(dest, s, w);
 551              dest += w;
 552              s += src->linesize[i];
 553          }
 554     }
 555
 556     if (pf->pixel_type == FF_PIXEL_PALETTE)
 557         memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
 558
 559     return size;
 560 }
 561
 562 int avpicture_get_size(int pix_fmt, int width, int height)
 563 {
 564     AVPicture dummy_pict;
 565     return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
 566 }
 567
 568 int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
 569                              int has_alpha)
 570 {
 571     const PixFmtInfo *pf, *ps;
 572     int loss;
 573
 574     ps = &pix_fmt_info[src_pix_fmt];
 575     pf = &pix_fmt_info[dst_pix_fmt];
 576
 577     /* compute loss */
 578     loss = 0;
 579     pf = &pix_fmt_info[dst_pix_fmt];
 580     if (pf->depth < ps->depth ||
 581         (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
 582         loss |= FF_LOSS_DEPTH;
 583     if (pf->x_chroma_shift > ps->x_chroma_shift ||
 584         pf->y_chroma_shift > ps->y_chroma_shift)
 585         loss |= FF_LOSS_RESOLUTION;
 586     switch(pf->color_type) {
 587     case FF_COLOR_RGB:
 588         if (ps->color_type != FF_COLOR_RGB &&
 589             ps->color_type != FF_COLOR_GRAY)
 590             loss |= FF_LOSS_COLORSPACE;
 591         break;
 592     case FF_COLOR_GRAY:
 593         if (ps->color_type != FF_COLOR_GRAY)
 594             loss |= FF_LOSS_COLORSPACE;
 595         break;
 596     case FF_COLOR_YUV:
 597         if (ps->color_type != FF_COLOR_YUV)
 598             loss |= FF_LOSS_COLORSPACE;
 599         break;
 600     case FF_COLOR_YUV_JPEG:
 601         if (ps->color_type != FF_COLOR_YUV_JPEG &&
 602             ps->color_type != FF_COLOR_YUV &&
 603             ps->color_type != FF_COLOR_GRAY)
 604             loss |= FF_LOSS_COLORSPACE;
 605         break;
 606     default:
 607         /* fail safe test */
 608         if (ps->color_type != pf->color_type)
 609             loss |= FF_LOSS_COLORSPACE;
 610         break;
 611     }
 612     if (pf->color_type == FF_COLOR_GRAY &&
 613         ps->color_type != FF_COLOR_GRAY)
 614         loss |= FF_LOSS_CHROMA;
 615     if (!pf->is_alpha && (ps->is_alpha && has_alpha))
 616         loss |= FF_LOSS_ALPHA;
 617     if (pf->pixel_type == FF_PIXEL_PALETTE &&
 618         (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
 619         loss |= FF_LOSS_COLORQUANT;
 620     return loss;
 621 }
 622
 623 static int avg_bits_per_pixel(int pix_fmt)
 624 {
 625     int bits;
 626     const PixFmtInfo *pf;
 627
 628     pf = &pix_fmt_info[pix_fmt];
 629     switch(pf->pixel_type) {
 630     case FF_PIXEL_PACKED:
 631         switch(pix_fmt) {
 632         case PIX_FMT_YUYV422:
 633         case PIX_FMT_UYVY422:
 634         case PIX_FMT_RGB565:
 635         case PIX_FMT_RGB555:
 636         case PIX_FMT_BGR565:
 637         case PIX_FMT_BGR555:
 638             bits = 16;
 639             break;
 640         case PIX_FMT_UYYVYY411:
 641             bits = 12;
 642             break;
 643         default:
 644             bits = pf->depth * pf->nb_channels;
 645             break;
 646         }
 647         break;
 648     case FF_PIXEL_PLANAR:
 649         if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
 650             bits = pf->depth * pf->nb_channels;
 651         } else {
 652             bits = pf->depth + ((2 * pf->depth) >>
 653                                 (pf->x_chroma_shift + pf->y_chroma_shift));
 654         }
 655         break;
 656     case FF_PIXEL_PALETTE:
 657         bits = 8;
 658         break;
 659     default:
 660         bits = -1;
 661         break;
 662     }
 663     return bits;
 664 }
 665
 666 static int avcodec_find_best_pix_fmt1(int pix_fmt_mask,
 667                                       int src_pix_fmt,
 668                                       int has_alpha,
 669                                       int loss_mask)
 670 {
 671     int dist, i, loss, min_dist, dst_pix_fmt;
 672
 673     /* find exact color match with smallest size */
 674     dst_pix_fmt = -1;
 675     min_dist = 0x7fffffff;
 676     for(i = 0;i < PIX_FMT_NB; i++) {
 677         if (pix_fmt_mask & (1 << i)) {
 678             loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
 679             if (loss == 0) {
 680                 dist = avg_bits_per_pixel(i);
 681                 if (dist < min_dist) {
 682                     min_dist = dist;
 683                     dst_pix_fmt = i;
 684                 }
 685             }
 686         }
 687     }
 688     return dst_pix_fmt;
 689 }
 690
 691 int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
 692                               int has_alpha, int *loss_ptr)
 693 {
 694     int dst_pix_fmt, loss_mask, i;
 695     static const int loss_mask_order[] = {
 696         ~0, /* no loss first */
 697         ~FF_LOSS_ALPHA,
 698         ~FF_LOSS_RESOLUTION,
 699         ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
 700         ~FF_LOSS_COLORQUANT,
 701         ~FF_LOSS_DEPTH,
 702         0,
 703     };
 704
 705     /* try with successive loss */
 706     i = 0;
 707     for(;;) {
 708         loss_mask = loss_mask_order[i++];
 709         dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
 710                                                  has_alpha, loss_mask);
 711         if (dst_pix_fmt >= 0)
 712             goto found;
 713         if (loss_mask == 0)
 714             break;
 715     }
 716     return -1;
 717  found:
 718     if (loss_ptr)
 719         *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
 720     return dst_pix_fmt;
 721 }
 722
 723 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
 724                            const uint8_t *src, int src_wrap,
 725                            int width, int height)
 726 {
 727     if((!dst) || (!src))
 728         return;
 729     for(;height > 0; height--) {
 730         memcpy(dst, src, width);
 731         dst += dst_wrap;
 732         src += src_wrap;
 733     }
 734 }
 735
 736 void av_picture_copy(AVPicture *dst, const AVPicture *src,
 737               int pix_fmt, int width, int height)
 738 {
 739     int bwidth, bits, i;
 740     const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
 741
 742     pf = &pix_fmt_info[pix_fmt];
 743     switch(pf->pixel_type) {
 744     case FF_PIXEL_PACKED:
 745         switch(pix_fmt) {
 746         case PIX_FMT_YUYV422:
 747         case PIX_FMT_UYVY422:
 748         case PIX_FMT_RGB565:
 749         case PIX_FMT_RGB555:
 750         case PIX_FMT_BGR565:
 751         case PIX_FMT_BGR555:
 752             bits = 16;
 753             break;
 754         case PIX_FMT_UYYVYY411:
 755             bits = 12;
 756             break;
 757         default:
 758             bits = pf->depth * pf->nb_channels;
 759             break;
 760         }
 761         bwidth = (width * bits + 7) >> 3;
 762         ff_img_copy_plane(dst->data[0], dst->linesize[0],
 763                        src->data[0], src->linesize[0],
 764                        bwidth, height);
 765         break;
 766     case FF_PIXEL_PLANAR:
 767         for(i = 0; i < pf->nb_channels; i++) {
 768             int w, h;
 769             w = width;
 770             h = height;
 771             if (i == 1 || i == 2) {
 772                 w >>= pf->x_chroma_shift;
 773                 h >>= pf->y_chroma_shift;
 774             }
 775             bwidth = (w * pf->depth + 7) >> 3;
 776             ff_img_copy_plane(dst->data[i], dst->linesize[i],
 777                            src->data[i], src->linesize[i],
 778                            bwidth, h);
 779         }
 780         break;
 781     case FF_PIXEL_PALETTE:
 782         ff_img_copy_plane(dst->data[0], dst->linesize[0],
 783                        src->data[0], src->linesize[0],
 784                        width, height);
 785         /* copy the palette */
 786         ff_img_copy_plane(dst->data[1], dst->linesize[1],
 787                        src->data[1], src->linesize[1],
 788                        4, 256);
 789         break;
 790     }
 791 }
 792
 793 /* XXX: totally non optimized */
 794
 795 static void yuyv422_to_yuv420p(AVPicture *dst, const AVPicture *src,
 796                               int width, int height)
 797 {
 798     const uint8_t *p, *p1;
 799     uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
 800     int w;
 801
 802     p1 = src->data[0];
 803     lum1 = dst->data[0];
 804     cb1 = dst->data[1];
 805     cr1 = dst->data[2];
 806
 807     for(;height >= 1; height -= 2) {
 808         p = p1;
 809         lum = lum1;
 810         cb = cb1;
 811         cr = cr1;
 812         for(w = width; w >= 2; w -= 2) {
 813             lum[0] = p[0];
 814             cb[0] = p[1];
 815             lum[1] = p[2];
 816             cr[0] = p[3];
 817             p += 4;
 818             lum += 2;
 819             cb++;
 820             cr++;
 821         }
 822         if (w) {
 823             lum[0] = p[0];
 824             cb[0] = p[1];
 825             cr[0] = p[3];
 826             cb++;
 827             cr++;
 828         }
 829         p1 += src->linesize[0];
 830         lum1 += dst->linesize[0];
 831         if (height>1) {
 832             p = p1;
 833             lum = lum1;
 834             for(w = width; w >= 2; w -= 2) {
 835                 lum[0] = p[0];
 836                 lum[1] = p[2];
 837                 p += 4;
 838                 lum += 2;
 839             }
 840             if (w) {
 841                 lum[0] = p[0];
 842             }
 843             p1 += src->linesize[0];
 844             lum1 += dst->linesize[0];
 845         }
 846         cb1 += dst->linesize[1];
 847         cr1 += dst->linesize[2];
 848     }
 849 }
 850
 851 static void uyvy422_to_yuv420p(AVPicture *dst, const AVPicture *src,
 852                               int width, int height)
 853 {
 854     const uint8_t *p, *p1;
 855     uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
 856     int w;
 857
 858     p1 = src->data[0];
 859
 860     lum1 = dst->data[0];
 861     cb1 = dst->data[1];
 862     cr1 = dst->data[2];
 863
 864     for(;height >= 1; height -= 2) {
 865         p = p1;
 866         lum = lum1;
 867         cb = cb1;
 868         cr = cr1;
 869         for(w = width; w >= 2; w -= 2) {
 870             lum[0] = p[1];
 871             cb[0] = p[0];
 872             lum[1] = p[3];
 873             cr[0] = p[2];
 874             p += 4;
 875             lum += 2;
 876             cb++;
 877             cr++;
 878         }
 879         if (w) {
 880             lum[0] = p[1];
 881             cb[0] = p[0];
 882             cr[0] = p[2];
 883             cb++;
 884             cr++;
 885         }
 886         p1 += src->linesize[0];
 887         lum1 += dst->linesize[0];
 888         if (height>1) {
 889             p = p1;
 890             lum = lum1;
 891             for(w = width; w >= 2; w -= 2) {
 892                 lum[0] = p[1];
 893                 lum[1] = p[3];
 894                 p += 4;
 895                 lum += 2;
 896             }
 897             if (w) {
 898                 lum[0] = p[1];
 899             }
 900             p1 += src->linesize[0];
 901             lum1 += dst->linesize[0];
 902         }
 903         cb1 += dst->linesize[1];
 904         cr1 += dst->linesize[2];
 905     }
 906 }
 907
 908
 909 static void uyvy422_to_yuv422p(AVPicture *dst, const AVPicture *src,
 910                               int width, int height)
 911 {
 912     const uint8_t *p, *p1;
 913     uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
 914     int w;
 915
 916     p1 = src->data[0];
 917     lum1 = dst->data[0];
 918     cb1 = dst->data[1];
 919     cr1 = dst->data[2];
 920     for(;height > 0; height--) {
 921         p = p1;
 922         lum = lum1;
 923         cb = cb1;
 924         cr = cr1;
 925         for(w = width; w >= 2; w -= 2) {
 926             lum[0] = p[1];
 927             cb[0] = p[0];
 928             lum[1] = p[3];
 929             cr[0] = p[2];
 930             p += 4;
 931             lum += 2;
 932             cb++;
 933             cr++;
 934         }
 935         p1 += src->linesize[0];
 936         lum1 += dst->linesize[0];
 937         cb1 += dst->linesize[1];
 938         cr1 += dst->linesize[2];
 939     }
 940 }
 941
 942
 943 static void yuyv422_to_yuv422p(AVPicture *dst, const AVPicture *src,
 944                               int width, int height)
 945 {
 946     const uint8_t *p, *p1;
 947     uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
 948     int w;
 949
 950     p1 = src->data[0];
 951     lum1 = dst->data[0];
 952     cb1 = dst->data[1];
 953     cr1 = dst->data[2];
 954     for(;height > 0; height--) {
 955         p = p1;
 956         lum = lum1;
 957         cb = cb1;
 958         cr = cr1;
 959         for(w = width; w >= 2; w -= 2) {
 960             lum[0] = p[0];
 961             cb[0] = p[1];
 962             lum[1] = p[2];
 963             cr[0] = p[3];
 964             p += 4;
 965             lum += 2;
 966             cb++;
 967             cr++;
 968         }
 969         p1 += src->linesize[0];
 970         lum1 += dst->linesize[0];
 971         cb1 += dst->linesize[1];
 972         cr1 += dst->linesize[2];
 973     }
 974 }
 975
 976 static void yuv422p_to_yuyv422(AVPicture *dst, const AVPicture *src,
 977                               int width, int height)
 978 {
 979     uint8_t *p, *p1;
 980     const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
 981     int w;
 982
 983     p1 = dst->data[0];
 984     lum1 = src->data[0];
 985     cb1 = src->data[1];
 986     cr1 = src->data[2];
 987     for(;height > 0; height--) {
 988         p = p1;
 989         lum = lum1;
 990         cb = cb1;
 991         cr = cr1;
 992         for(w = width; w >= 2; w -= 2) {
 993             p[0] = lum[0];
 994             p[1] = cb[0];
 995             p[2] = lum[1];
 996             p[3] = cr[0];
 997             p += 4;
 998             lum += 2;
 999             cb++;
1000             cr++;
1001         }
1002         p1 += dst->linesize[0];
1003         lum1 += src->linesize[0];
1004         cb1 += src->linesize[1];
1005         cr1 += src->linesize[2];
1006     }
1007 }
1008
1009 static void yuv422p_to_uyvy422(AVPicture *dst, const AVPicture *src,
1010                               int width, int height)
1011 {
1012     uint8_t *p, *p1;
1013     const uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1014     int w;
1015
1016     p1 = dst->data[0];
1017     lum1 = src->data[0];
1018     cb1 = src->data[1];
1019     cr1 = src->data[2];
1020     for(;height > 0; height--) {
1021         p = p1;
1022         lum = lum1;
1023         cb = cb1;
1024         cr = cr1;
1025         for(w = width; w >= 2; w -= 2) {
1026             p[1] = lum[0];
1027             p[0] = cb[0];
1028             p[3] = lum[1];
1029             p[2] = cr[0];
1030             p += 4;
1031             lum += 2;
1032             cb++;
1033             cr++;
1034         }
1035         p1 += dst->linesize[0];
1036         lum1 += src->linesize[0];
1037         cb1 += src->linesize[1];
1038         cr1 += src->linesize[2];
1039     }
1040 }
1041
1042 static void uyyvyy411_to_yuv411p(AVPicture *dst, const AVPicture *src,
1043                               int width, int height)
1044 {
1045     const uint8_t *p, *p1;
1046     uint8_t *lum, *cr, *cb, *lum1, *cr1, *cb1;
1047     int w;
1048
1049     p1 = src->data[0];
1050     lum1 = dst->data[0];
1051     cb1 = dst->data[1];
1052     cr1 = dst->data[2];
1053     for(;height > 0; height--) {
1054         p = p1;
1055         lum = lum1;
1056         cb = cb1;
1057         cr = cr1;
1058         for(w = width; w >= 4; w -= 4) {
1059             cb[0] = p[0];
1060             lum[0] = p[1];
1061             lum[1] = p[2];
1062             cr[0] = p[3];
1063             lum[2] = p[4];
1064             lum[3] = p[5];
1065             p += 6;
1066             lum += 4;
1067             cb++;
1068             cr++;
1069         }
1070         p1 += src->linesize[0];
1071         lum1 += dst->linesize[0];
1072         cb1 += dst->linesize[1];
1073         cr1 += dst->linesize[2];
1074     }
1075 }
1076
1077
1078 static void yuv420p_to_yuyv422(AVPicture *dst, const AVPicture *src,
1079                               int width, int height)
1080 {
1081     int w, h;
1082     uint8_t *line1, *line2, *linesrc = dst->data[0];
1083     uint8_t *lum1, *lum2, *lumsrc = src->data[0];
1084     uint8_t *cb1, *cb2 = src->data[1];
1085     uint8_t *cr1, *cr2 = src->data[2];
1086
1087     for(h = height / 2; h--;) {
1088         line1 = linesrc;
1089         line2 = linesrc + dst->linesize[0];
1090
1091         lum1 = lumsrc;
1092         lum2 = lumsrc + src->linesize[0];
1093
1094         cb1 = cb2;
1095         cr1 = cr2;
1096
1097         for(w = width / 2; w--;) {
1098                 *line1++ = *lum1++; *line2++ = *lum2++;
1099                 *line1++ =          *line2++ = *cb1++;
1100                 *line1++ = *lum1++; *line2++ = *lum2++;
1101                 *line1++ =          *line2++ = *cr1++;
1102         }
1103
1104         linesrc += dst->linesize[0] * 2;
1105         lumsrc += src->linesize[0] * 2;
1106         cb2 += src->linesize[1];
1107         cr2 += src->linesize[2];
1108     }
1109 }
1110
1111 static void yuv420p_to_uyvy422(AVPicture *dst, const AVPicture *src,
1112                               int width, int height)
1113 {
1114     int w, h;
1115     uint8_t *line1, *line2, *linesrc = dst->data[0];
1116     uint8_t *lum1, *lum2, *lumsrc = src->data[0];
1117     uint8_t *cb1, *cb2 = src->data[1];
1118     uint8_t *cr1, *cr2 = src->data[2];
1119
1120     for(h = height / 2; h--;) {
1121         line1 = linesrc;
1122         line2 = linesrc + dst->linesize[0];
1123
1124         lum1 = lumsrc;
1125         lum2 = lumsrc + src->linesize[0];
1126
1127         cb1 = cb2;
1128         cr1 = cr2;
1129
1130         for(w = width / 2; w--;) {
1131                 *line1++ =          *line2++ = *cb1++;
1132                 *line1++ = *lum1++; *line2++ = *lum2++;
1133                 *line1++ =          *line2++ = *cr1++;
1134                 *line1++ = *lum1++; *line2++ = *lum2++;
1135         }
1136
1137         linesrc += dst->linesize[0] * 2;
1138         lumsrc += src->linesize[0] * 2;
1139         cb2 += src->linesize[1];
1140         cr2 += src->linesize[2];
1141     }
1142 }
1143
1144 #define SCALEBITS 10
1145 #define ONE_HALF  (1 << (SCALEBITS - 1))
1146 #define FIX(x)    ((int) ((x) * (1<<SCALEBITS) + 0.5))
1147
1148 #define YUV_TO_RGB1_CCIR(cb1, cr1)\
1149 {\
1150     cb = (cb1) - 128;\
1151     cr = (cr1) - 128;\
1152     r_add = FIX(1.40200*255.0/224.0) * cr + ONE_HALF;\
1153     g_add = - FIX(0.34414*255.0/224.0) * cb - FIX(0.71414*255.0/224.0) * cr + \
1154             ONE_HALF;\
1155     b_add = FIX(1.77200*255.0/224.0) * cb + ONE_HALF;\
1156 }
1157
1158 #define YUV_TO_RGB2_CCIR(r, g, b, y1)\
1159 {\
1160     y = ((y1) - 16) * FIX(255.0/219.0);\
1161     r = cm[(y + r_add) >> SCALEBITS];\
1162     g = cm[(y + g_add) >> SCALEBITS];\
1163     b = cm[(y + b_add) >> SCALEBITS];\
1164 }
1165
1166 #define YUV_TO_RGB1(cb1, cr1)\
1167 {\
1168     cb = (cb1) - 128;\
1169     cr = (cr1) - 128;\
1170     r_add = FIX(1.40200) * cr + ONE_HALF;\
1171     g_add = - FIX(0.34414) * cb - FIX(0.71414) * cr + ONE_HALF;\
1172     b_add = FIX(1.77200) * cb + ONE_HALF;\
1173 }
1174
1175 #define YUV_TO_RGB2(r, g, b, y1)\
1176 {\
1177     y = (y1) << SCALEBITS;\
1178     r = cm[(y + r_add) >> SCALEBITS];\
1179     g = cm[(y + g_add) >> SCALEBITS];\
1180     b = cm[(y + b_add) >> SCALEBITS];\
1181 }
1182
1183 #define Y_CCIR_TO_JPEG(y)\
1184  cm[((y) * FIX(255.0/219.0) + (ONE_HALF - 16 * FIX(255.0/219.0))) >> SCALEBITS]
1185
1186 #define Y_JPEG_TO_CCIR(y)\
1187  (((y) * FIX(219.0/255.0) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
1188
1189 #define C_CCIR_TO_JPEG(y)\
1190  cm[(((y) - 128) * FIX(127.0/112.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS]
1191
1192 /* NOTE: the clamp is really necessary! */
1193 static inline int C_JPEG_TO_CCIR(int y) {
1194     y = (((y - 128) * FIX(112.0/127.0) + (ONE_HALF + (128 << SCALEBITS))) >> SCALEBITS);
1195     if (y < 16)
1196         y = 16;
1197     return y;
1198 }
1199
1200
1201 #define RGB_TO_Y(r, g, b) \
1202 ((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
1203   FIX(0.11400) * (b) + ONE_HALF) >> SCALEBITS)
1204
1205 #define RGB_TO_U(r1, g1, b1, shift)\
1206 (((- FIX(0.16874) * r1 - FIX(0.33126) * g1 +         \
1207      FIX(0.50000) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1208
1209 #define RGB_TO_V(r1, g1, b1, shift)\
1210 (((FIX(0.50000) * r1 - FIX(0.41869) * g1 -           \
1211    FIX(0.08131) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1212
1213 #define RGB_TO_Y_CCIR(r, g, b) \
1214 ((FIX(0.29900*219.0/255.0) * (r) + FIX(0.58700*219.0/255.0) * (g) + \
1215   FIX(0.11400*219.0/255.0) * (b) + (ONE_HALF + (16 << SCALEBITS))) >> SCALEBITS)
1216
1217 #define RGB_TO_U_CCIR(r1, g1, b1, shift)\
1218 (((- FIX(0.16874*224.0/255.0) * r1 - FIX(0.33126*224.0/255.0) * g1 +         \
1219      FIX(0.50000*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1220
1221 #define RGB_TO_V_CCIR(r1, g1, b1, shift)\
1222 (((FIX(0.50000*224.0/255.0) * r1 - FIX(0.41869*224.0/255.0) * g1 -           \
1223    FIX(0.08131*224.0/255.0) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
1224
1225 static uint8_t y_ccir_to_jpeg[256];
1226 static uint8_t y_jpeg_to_ccir[256];
1227 static uint8_t c_ccir_to_jpeg[256];
1228 static uint8_t c_jpeg_to_ccir[256];
1229
1230 /* init various conversion tables */
1231 static void img_convert_init(void)
1232 {
1233     int i;
1234     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1235
1236     for(i = 0;i < 256; i++) {
1237         y_ccir_to_jpeg[i] = Y_CCIR_TO_JPEG(i);
1238         y_jpeg_to_ccir[i] = Y_JPEG_TO_CCIR(i);
1239         c_ccir_to_jpeg[i] = C_CCIR_TO_JPEG(i);
1240         c_jpeg_to_ccir[i] = C_JPEG_TO_CCIR(i);
1241     }
1242 }
1243
1244 /* apply to each pixel the given table */
1245 static void img_apply_table(uint8_t *dst, int dst_wrap,
1246                             const uint8_t *src, int src_wrap,
1247                             int width, int height, const uint8_t *table1)
1248 {
1249     int n;
1250     const uint8_t *s;
1251     uint8_t *d;
1252     const uint8_t *table;
1253
1254     table = table1;
1255     for(;height > 0; height--) {
1256         s = src;
1257         d = dst;
1258         n = width;
1259         while (n >= 4) {
1260             d[0] = table[s[0]];
1261             d[1] = table[s[1]];
1262             d[2] = table[s[2]];
1263             d[3] = table[s[3]];
1264             d += 4;
1265             s += 4;
1266             n -= 4;
1267         }
1268         while (n > 0) {
1269             d[0] = table[s[0]];
1270             d++;
1271             s++;
1272             n--;
1273         }
1274         dst += dst_wrap;
1275         src += src_wrap;
1276     }
1277 }
1278
1279 /* XXX: use generic filter ? */
1280 /* XXX: in most cases, the sampling position is incorrect */
1281
1282 /* 4x1 -> 1x1 */
1283 static void shrink41(uint8_t *dst, int dst_wrap,
1284                      const uint8_t *src, int src_wrap,
1285                      int width, int height)
1286 {
1287     int w;
1288     const uint8_t *s;
1289     uint8_t *d;
1290
1291     for(;height > 0; height--) {
1292         s = src;
1293         d = dst;
1294         for(w = width;w > 0; w--) {
1295             d[0] = (s[0] + s[1] + s[2] + s[3] + 2) >> 2;
1296             s += 4;
1297             d++;
1298         }
1299         src += src_wrap;
1300         dst += dst_wrap;
1301     }
1302 }
1303
1304 /* 2x1 -> 1x1 */
1305 static void shrink21(uint8_t *dst, int dst_wrap,
1306                      const uint8_t *src, int src_wrap,
1307                      int width, int height)
1308 {
1309     int w;
1310     const uint8_t *s;
1311     uint8_t *d;
1312
1313     for(;height > 0; height--) {
1314         s = src;
1315         d = dst;
1316         for(w = width;w > 0; w--) {
1317             d[0] = (s[0] + s[1]) >> 1;
1318             s += 2;
1319             d++;
1320         }
1321         src += src_wrap;
1322         dst += dst_wrap;
1323     }
1324 }
1325
1326 /* 1x2 -> 1x1 */
1327 static void shrink12(uint8_t *dst, int dst_wrap,
1328                      const uint8_t *src, int src_wrap,
1329                      int width, int height)
1330 {
1331     int w;
1332     uint8_t *d;
1333     const uint8_t *s1, *s2;
1334
1335     for(;height > 0; height--) {
1336         s1 = src;
1337         s2 = s1 + src_wrap;
1338         d = dst;
1339         for(w = width;w >= 4; w-=4) {
1340             d[0] = (s1[0] + s2[0]) >> 1;
1341             d[1] = (s1[1] + s2[1]) >> 1;
1342             d[2] = (s1[2] + s2[2]) >> 1;
1343             d[3] = (s1[3] + s2[3]) >> 1;
1344             s1 += 4;
1345             s2 += 4;
1346             d += 4;
1347         }
1348         for(;w > 0; w--) {
1349             d[0] = (s1[0] + s2[0]) >> 1;
1350             s1++;
1351             s2++;
1352             d++;
1353         }
1354         src += 2 * src_wrap;
1355         dst += dst_wrap;
1356     }
1357 }
1358
1359 /* 2x2 -> 1x1 */
1360 void ff_shrink22(uint8_t *dst, int dst_wrap,
1361                      const uint8_t *src, int src_wrap,
1362                      int width, int height)
1363 {
1364     int w;
1365     const uint8_t *s1, *s2;
1366     uint8_t *d;
1367
1368     for(;height > 0; height--) {
1369         s1 = src;
1370         s2 = s1 + src_wrap;
1371         d = dst;
1372         for(w = width;w >= 4; w-=4) {
1373             d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1374             d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1375             d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1376             d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1377             s1 += 8;
1378             s2 += 8;
1379             d += 4;
1380         }
1381         for(;w > 0; w--) {
1382             d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1383             s1 += 2;
1384             s2 += 2;
1385             d++;
1386         }
1387         src += 2 * src_wrap;
1388         dst += dst_wrap;
1389     }
1390 }
1391
1392 /* 4x4 -> 1x1 */
1393 void ff_shrink44(uint8_t *dst, int dst_wrap,
1394                      const uint8_t *src, int src_wrap,
1395                      int width, int height)
1396 {
1397     int w;
1398     const uint8_t *s1, *s2, *s3, *s4;
1399     uint8_t *d;
1400
1401     for(;height > 0; height--) {
1402         s1 = src;
1403         s2 = s1 + src_wrap;
1404         s3 = s2 + src_wrap;
1405         s4 = s3 + src_wrap;
1406         d = dst;
1407         for(w = width;w > 0; w--) {
1408             d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1409                     s2[0] + s2[1] + s2[2] + s2[3] +
1410                     s3[0] + s3[1] + s3[2] + s3[3] +
1411                     s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1412             s1 += 4;
1413             s2 += 4;
1414             s3 += 4;
1415             s4 += 4;
1416             d++;
1417         }
1418         src += 4 * src_wrap;
1419         dst += dst_wrap;
1420     }
1421 }
1422
1423 /* 8x8 -> 1x1 */
1424 void ff_shrink88(uint8_t *dst, int dst_wrap,
1425                      const uint8_t *src, int src_wrap,
1426                      int width, int height)
1427 {
1428     int w, i;
1429
1430     for(;height > 0; height--) {
1431         for(w = width;w > 0; w--) {
1432             int tmp=0;
1433             for(i=0; i<8; i++){
1434                 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1435                 src += src_wrap;
1436             }
1437             *(dst++) = (tmp + 32)>>6;
1438             src += 8 - 8*src_wrap;
1439         }
1440         src += 8*src_wrap - 8*width;
1441         dst += dst_wrap - width;
1442     }
1443 }
1444
1445 static void grow21_line(uint8_t *dst, const uint8_t *src,
1446                         int width)
1447 {
1448     int w;
1449     const uint8_t *s1;
1450     uint8_t *d;
1451
1452     s1 = src;
1453     d = dst;
1454     for(w = width;w >= 4; w-=4) {
1455         d[1] = d[0] = s1[0];
1456         d[3] = d[2] = s1[1];
1457         s1 += 2;
1458         d += 4;
1459     }
1460     for(;w >= 2; w -= 2) {
1461         d[1] = d[0] = s1[0];
1462         s1 ++;
1463         d += 2;
1464     }
1465     /* only needed if width is not a multiple of two */
1466     /* XXX: veryfy that */
1467     if (w) {
1468         d[0] = s1[0];
1469     }
1470 }
1471
1472 static void grow41_line(uint8_t *dst, const uint8_t *src,
1473                         int width)
1474 {
1475     int w, v;
1476     const uint8_t *s1;
1477     uint8_t *d;
1478
1479     s1 = src;
1480     d = dst;
1481     for(w = width;w >= 4; w-=4) {
1482         v = s1[0];
1483         d[0] = v;
1484         d[1] = v;
1485         d[2] = v;
1486         d[3] = v;
1487         s1 ++;
1488         d += 4;
1489     }
1490 }
1491
1492 /* 1x1 -> 2x1 */
1493 static void grow21(uint8_t *dst, int dst_wrap,
1494                    const uint8_t *src, int src_wrap,
1495                    int width, int height)
1496 {
1497     for(;height > 0; height--) {
1498         grow21_line(dst, src, width);
1499         src += src_wrap;
1500         dst += dst_wrap;
1501     }
1502 }
1503
1504 /* 1x1 -> 2x2 */
1505 static void grow22(uint8_t *dst, int dst_wrap,
1506                    const uint8_t *src, int src_wrap,
1507                    int width, int height)
1508 {
1509     for(;height > 0; height--) {
1510         grow21_line(dst, src, width);
1511         if (height%2)
1512             src += src_wrap;
1513         dst += dst_wrap;
1514     }
1515 }
1516
1517 /* 1x1 -> 4x1 */
1518 static void grow41(uint8_t *dst, int dst_wrap,
1519                    const uint8_t *src, int src_wrap,
1520                    int width, int height)
1521 {
1522     for(;height > 0; height--) {
1523         grow41_line(dst, src, width);
1524         src += src_wrap;
1525         dst += dst_wrap;
1526     }
1527 }
1528
1529 /* 1x1 -> 4x4 */
1530 static void grow44(uint8_t *dst, int dst_wrap,
1531                    const uint8_t *src, int src_wrap,
1532                    int width, int height)
1533 {
1534     for(;height > 0; height--) {
1535         grow41_line(dst, src, width);
1536         if ((height & 3) == 1)
1537             src += src_wrap;
1538         dst += dst_wrap;
1539     }
1540 }
1541
1542 /* 1x2 -> 2x1 */
1543 static void conv411(uint8_t *dst, int dst_wrap,
1544                     const uint8_t *src, int src_wrap,
1545                     int width, int height)
1546 {
1547     int w, c;
1548     const uint8_t *s1, *s2;
1549     uint8_t *d;
1550
1551     width>>=1;
1552
1553     for(;height > 0; height--) {
1554         s1 = src;
1555         s2 = src + src_wrap;
1556         d = dst;
1557         for(w = width;w > 0; w--) {
1558             c = (s1[0] + s2[0]) >> 1;
1559             d[0] = c;
1560             d[1] = c;
1561             s1++;
1562             s2++;
1563             d += 2;
1564         }
1565         src += src_wrap * 2;
1566         dst += dst_wrap;
1567     }
1568 }
1569
1570 /* XXX: add jpeg quantize code */
1571
1572 #define TRANSP_INDEX (6*6*6)
1573
1574 /* this is maybe slow, but allows for extensions */
1575 static inline unsigned char gif_clut_index(uint8_t r, uint8_t g, uint8_t b)
1576 {
1577     return ((((r)/47)%6)*6*6+(((g)/47)%6)*6+(((b)/47)%6));
1578 }
1579
1580 static void build_rgb_palette(uint8_t *palette, int has_alpha)
1581 {
1582     uint32_t *pal;
1583     static const uint8_t pal_value[6] = { 0x00, 0x33, 0x66, 0x99, 0xcc, 0xff };
1584     int i, r, g, b;
1585
1586     pal = (uint32_t *)palette;
1587     i = 0;
1588     for(r = 0; r < 6; r++) {
1589         for(g = 0; g < 6; g++) {
1590             for(b = 0; b < 6; b++) {
1591                 pal[i++] = (0xff << 24) | (pal_value[r] << 16) |
1592                     (pal_value[g] << 8) | pal_value[b];
1593             }
1594         }
1595     }
1596     if (has_alpha)
1597         pal[i++] = 0;
1598     while (i < 256)
1599         pal[i++] = 0xff000000;
1600 }
1601
1602 /* copy bit n to bits 0 ... n - 1 */
1603 static inline unsigned int bitcopy_n(unsigned int a, int n)
1604 {
1605     int mask;
1606     mask = (1 << n) - 1;
1607     return (a & (0xff & ~mask)) | ((-((a >> n) & 1)) & mask);
1608 }
1609
1610 /* rgb555 handling */
1611
1612 #define RGB_NAME rgb555
1613
1614 #define RGB_IN(r, g, b, s)\
1615 {\
1616     unsigned int v = ((const uint16_t *)(s))[0];\
1617     r = bitcopy_n(v >> (10 - 3), 3);\
1618     g = bitcopy_n(v >> (5 - 3), 3);\
1619     b = bitcopy_n(v << 3, 3);\
1620 }
1621
1622
1623 #define RGB_OUT(d, r, g, b)\
1624 {\
1625     ((uint16_t *)(d))[0] = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);\
1626 }
1627
1628 #define BPP 2
1629
1630 #include "imgconvert_template.h"
1631
1632 /* rgb565 handling */
1633
1634 #define RGB_NAME rgb565
1635
1636 #define RGB_IN(r, g, b, s)\
1637 {\
1638     unsigned int v = ((const uint16_t *)(s))[0];\
1639     r = bitcopy_n(v >> (11 - 3), 3);\
1640     g = bitcopy_n(v >> (5 - 2), 2);\
1641     b = bitcopy_n(v << 3, 3);\
1642 }
1643
1644 #define RGB_OUT(d, r, g, b)\
1645 {\
1646     ((uint16_t *)(d))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);\
1647 }
1648
1649 #define BPP 2
1650
1651 #include "imgconvert_template.h"
1652
1653 /* bgr24 handling */
1654
1655 #define RGB_NAME bgr24
1656
1657 #define RGB_IN(r, g, b, s)\
1658 {\
1659     b = (s)[0];\
1660     g = (s)[1];\
1661     r = (s)[2];\
1662 }
1663
1664 #define RGB_OUT(d, r, g, b)\
1665 {\
1666     (d)[0] = b;\
1667     (d)[1] = g;\
1668     (d)[2] = r;\
1669 }
1670
1671 #define BPP 3
1672
1673 #include "imgconvert_template.h"
1674
1675 #undef RGB_IN
1676 #undef RGB_OUT
1677 #undef BPP
1678
1679 /* rgb24 handling */
1680
1681 #define RGB_NAME rgb24
1682 #define FMT_RGB24
1683
1684 #define RGB_IN(r, g, b, s)\
1685 {\
1686     r = (s)[0];\
1687     g = (s)[1];\
1688     b = (s)[2];\
1689 }
1690
1691 #define RGB_OUT(d, r, g, b)\
1692 {\
1693     (d)[0] = r;\
1694     (d)[1] = g;\
1695     (d)[2] = b;\
1696 }
1697
1698 #define BPP 3
1699
1700 #include "imgconvert_template.h"
1701
1702 /* rgb32 handling */
1703
1704 #define RGB_NAME rgb32
1705 #define FMT_RGB32
1706
1707 #define RGB_IN(r, g, b, s)\
1708 {\
1709     unsigned int v = ((const uint32_t *)(s))[0];\
1710     r = (v >> 16) & 0xff;\
1711     g = (v >> 8) & 0xff;\
1712     b = v & 0xff;\
1713 }
1714
1715 #define RGBA_IN(r, g, b, a, s)\
1716 {\
1717     unsigned int v = ((const uint32_t *)(s))[0];\
1718     a = (v >> 24) & 0xff;\
1719     r = (v >> 16) & 0xff;\
1720     g = (v >> 8) & 0xff;\
1721     b = v & 0xff;\
1722 }
1723
1724 #define RGBA_OUT(d, r, g, b, a)\
1725 {\
1726     ((uint32_t *)(d))[0] = (a << 24) | (r << 16) | (g << 8) | b;\
1727 }
1728
1729 #define BPP 4
1730
1731 #include "imgconvert_template.h"
1732
1733 static void mono_to_gray(AVPicture *dst, const AVPicture *src,
1734                          int width, int height, int xor_mask)
1735 {
1736     const unsigned char *p;
1737     unsigned char *q;
1738     int v, dst_wrap, src_wrap;
1739     int y, w;
1740
1741     p = src->data[0];
1742     src_wrap = src->linesize[0] - ((width + 7) >> 3);
1743
1744     q = dst->data[0];
1745     dst_wrap = dst->linesize[0] - width;
1746     for(y=0;y<height;y++) {
1747         w = width;
1748         while (w >= 8) {
1749             v = *p++ ^ xor_mask;
1750             q[0] = -(v >> 7);
1751             q[1] = -((v >> 6) & 1);
1752             q[2] = -((v >> 5) & 1);
1753             q[3] = -((v >> 4) & 1);
1754             q[4] = -((v >> 3) & 1);
1755             q[5] = -((v >> 2) & 1);
1756             q[6] = -((v >> 1) & 1);
1757             q[7] = -((v >> 0) & 1);
1758             w -= 8;
1759             q += 8;
1760         }
1761         if (w > 0) {
1762             v = *p++ ^ xor_mask;
1763             do {
1764                 q[0] = -((v >> 7) & 1);
1765                 q++;
1766                 v <<= 1;
1767             } while (--w);
1768         }
1769         p += src_wrap;
1770         q += dst_wrap;
1771     }
1772 }
1773
1774 static void monowhite_to_gray(AVPicture *dst, const AVPicture *src,
1775                                int width, int height)
1776 {
1777     mono_to_gray(dst, src, width, height, 0xff);
1778 }
1779
1780 static void monoblack_to_gray(AVPicture *dst, const AVPicture *src,
1781                                int width, int height)
1782 {
1783     mono_to_gray(dst, src, width, height, 0x00);
1784 }
1785
1786 static void gray_to_mono(AVPicture *dst, const AVPicture *src,
1787                          int width, int height, int xor_mask)
1788 {
1789     int n;
1790     const uint8_t *s;
1791     uint8_t *d;
1792     int j, b, v, n1, src_wrap, dst_wrap, y;
1793
1794     s = src->data[0];
1795     src_wrap = src->linesize[0] - width;
1796
1797     d = dst->data[0];
1798     dst_wrap = dst->linesize[0] - ((width + 7) >> 3);
1799
1800     for(y=0;y<height;y++) {
1801         n = width;
1802         while (n >= 8) {
1803             v = 0;
1804             for(j=0;j<8;j++) {
1805                 b = s[0];
1806                 s++;
1807                 v = (v << 1) | (b >> 7);
1808             }
1809             d[0] = v ^ xor_mask;
1810             d++;
1811             n -= 8;
1812         }
1813         if (n > 0) {
1814             n1 = n;
1815             v = 0;
1816             while (n > 0) {
1817                 b = s[0];
1818                 s++;
1819                 v = (v << 1) | (b >> 7);
1820                 n--;
1821             }
1822             d[0] = (v << (8 - (n1 & 7))) ^ xor_mask;
1823             d++;
1824         }
1825         s += src_wrap;
1826         d += dst_wrap;
1827     }
1828 }
1829
1830 static void gray_to_monowhite(AVPicture *dst, const AVPicture *src,
1831                               int width, int height)
1832 {
1833     gray_to_mono(dst, src, width, height, 0xff);
1834 }
1835
1836 static void gray_to_monoblack(AVPicture *dst, const AVPicture *src,
1837                               int width, int height)
1838 {
1839     gray_to_mono(dst, src, width, height, 0x00);
1840 }
1841
1842 static void gray_to_gray16(AVPicture *dst, const AVPicture *src,
1843                               int width, int height)
1844 {
1845     int x, y, src_wrap, dst_wrap;
1846     uint8_t *s, *d;
1847     s = src->data[0];
1848     src_wrap = src->linesize[0] - width;
1849     d = dst->data[0];
1850     dst_wrap = dst->linesize[0] - width * 2;
1851     for(y=0; y<height; y++){
1852         for(x=0; x<width; x++){
1853             *d++ = *s;
1854             *d++ = *s++;
1855         }
1856         s += src_wrap;
1857         d += dst_wrap;
1858     }
1859 }
1860
1861 static void gray16_to_gray(AVPicture *dst, const AVPicture *src,
1862                               int width, int height)
1863 {
1864     int x, y, src_wrap, dst_wrap;
1865     uint8_t *s, *d;
1866     s = src->data[0];
1867     src_wrap = src->linesize[0] - width * 2;
1868     d = dst->data[0];
1869     dst_wrap = dst->linesize[0] - width;
1870     for(y=0; y<height; y++){
1871         for(x=0; x<width; x++){
1872             *d++ = *s;
1873             s += 2;
1874         }
1875         s += src_wrap;
1876         d += dst_wrap;
1877     }
1878 }
1879
1880 static void gray16be_to_gray(AVPicture *dst, const AVPicture *src,
1881                               int width, int height)
1882 {
1883     gray16_to_gray(dst, src, width, height);
1884 }
1885
1886 static void gray16le_to_gray(AVPicture *dst, const AVPicture *src,
1887                               int width, int height)
1888 {
1889     gray16_to_gray(dst, src + 1, width, height);
1890 }
1891
1892 static void gray16_to_gray16(AVPicture *dst, const AVPicture *src,
1893                               int width, int height)
1894 {
1895     int x, y, src_wrap, dst_wrap;
1896     uint16_t *s, *d;
1897     s = src->data[0];
1898     src_wrap = (src->linesize[0] - width * 2)/2;
1899     d = dst->data[0];
1900     dst_wrap = (dst->linesize[0] - width * 2)/2;
1901     for(y=0; y<height; y++){
1902         for(x=0; x<width; x++){
1903             *d++ = bswap_16(*s++);
1904         }
1905         s += src_wrap;
1906         d += dst_wrap;
1907     }
1908 }
1909
1910
1911 typedef struct ConvertEntry {
1912     void (*convert)(AVPicture *dst,
1913                     const AVPicture *src, int width, int height);
1914 } ConvertEntry;
1915
1916 /* Add each new convertion function in this table. In order to be able
1917    to convert from any format to any format, the following constraints
1918    must be satisfied:
1919
1920    - all FF_COLOR_RGB formats must convert to and from PIX_FMT_RGB24
1921
1922    - all FF_COLOR_GRAY formats must convert to and from PIX_FMT_GRAY8
1923
1924    - all FF_COLOR_RGB formats with alpha must convert to and from PIX_FMT_RGB32
1925
1926    - PIX_FMT_YUV444P and PIX_FMT_YUVJ444P must convert to and from
1927      PIX_FMT_RGB24.
1928
1929    - PIX_FMT_422 must convert to and from PIX_FMT_422P.
1930
1931    The other conversion functions are just optimisations for common cases.
1932 */
1933 static const ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
1934     [PIX_FMT_YUV420P] = {
1935         [PIX_FMT_YUYV422] = {
1936             .convert = yuv420p_to_yuyv422,
1937         },
1938         [PIX_FMT_RGB555] = {
1939             .convert = yuv420p_to_rgb555
1940         },
1941         [PIX_FMT_RGB565] = {
1942             .convert = yuv420p_to_rgb565
1943         },
1944         [PIX_FMT_BGR24] = {
1945             .convert = yuv420p_to_bgr24
1946         },
1947         [PIX_FMT_RGB24] = {
1948             .convert = yuv420p_to_rgb24
1949         },
1950         [PIX_FMT_RGB32] = {
1951             .convert = yuv420p_to_rgb32
1952         },
1953         [PIX_FMT_UYVY422] = {
1954             .convert = yuv420p_to_uyvy422,
1955         },
1956     },
1957     [PIX_FMT_YUV422P] = {
1958         [PIX_FMT_YUYV422] = {
1959             .convert = yuv422p_to_yuyv422,
1960         },
1961         [PIX_FMT_UYVY422] = {
1962             .convert = yuv422p_to_uyvy422,
1963         },
1964     },
1965     [PIX_FMT_YUV444P] = {
1966         [PIX_FMT_RGB24] = {
1967             .convert = yuv444p_to_rgb24
1968         },
1969     },
1970     [PIX_FMT_YUVJ420P] = {
1971         [PIX_FMT_RGB555] = {
1972             .convert = yuvj420p_to_rgb555
1973         },
1974         [PIX_FMT_RGB565] = {
1975             .convert = yuvj420p_to_rgb565
1976         },
1977         [PIX_FMT_BGR24] = {
1978             .convert = yuvj420p_to_bgr24
1979         },
1980         [PIX_FMT_RGB24] = {
1981             .convert = yuvj420p_to_rgb24
1982         },
1983         [PIX_FMT_RGB32] = {
1984             .convert = yuvj420p_to_rgb32
1985         },
1986     },
1987     [PIX_FMT_YUVJ444P] = {
1988         [PIX_FMT_RGB24] = {
1989             .convert = yuvj444p_to_rgb24
1990         },
1991     },
1992     [PIX_FMT_YUYV422] = {
1993         [PIX_FMT_YUV420P] = {
1994             .convert = yuyv422_to_yuv420p,
1995         },
1996         [PIX_FMT_YUV422P] = {
1997             .convert = yuyv422_to_yuv422p,
1998         },
1999     },
2000     [PIX_FMT_UYVY422] = {
2001         [PIX_FMT_YUV420P] = {
2002             .convert = uyvy422_to_yuv420p,
2003         },
2004         [PIX_FMT_YUV422P] = {
2005             .convert = uyvy422_to_yuv422p,
2006         },
2007     },
2008     [PIX_FMT_RGB24] = {
2009         [PIX_FMT_YUV420P] = {
2010             .convert = rgb24_to_yuv420p
2011         },
2012         [PIX_FMT_RGB565] = {
2013             .convert = rgb24_to_rgb565
2014         },
2015         [PIX_FMT_RGB555] = {
2016             .convert = rgb24_to_rgb555
2017         },
2018         [PIX_FMT_RGB32] = {
2019             .convert = rgb24_to_rgb32
2020         },
2021         [PIX_FMT_BGR24] = {
2022             .convert = rgb24_to_bgr24
2023         },
2024         [PIX_FMT_GRAY8] = {
2025             .convert = rgb24_to_gray
2026         },
2027         [PIX_FMT_PAL8] = {
2028             .convert = rgb24_to_pal8
2029         },
2030         [PIX_FMT_YUV444P] = {
2031             .convert = rgb24_to_yuv444p
2032         },
2033         [PIX_FMT_YUVJ420P] = {
2034             .convert = rgb24_to_yuvj420p
2035         },
2036         [PIX_FMT_YUVJ444P] = {
2037             .convert = rgb24_to_yuvj444p
2038         },
2039     },
2040     [PIX_FMT_RGB32] = {
2041         [PIX_FMT_RGB24] = {
2042             .convert = rgb32_to_rgb24
2043         },
2044         [PIX_FMT_BGR24] = {
2045             .convert = rgb32_to_bgr24
2046         },
2047         [PIX_FMT_RGB565] = {
2048             .convert = rgb32_to_rgb565
2049         },
2050         [PIX_FMT_RGB555] = {
2051             .convert = rgb32_to_rgb555
2052         },
2053         [PIX_FMT_PAL8] = {
2054             .convert = rgb32_to_pal8
2055         },
2056         [PIX_FMT_YUV420P] = {
2057             .convert = rgb32_to_yuv420p
2058         },
2059         [PIX_FMT_GRAY8] = {
2060             .convert = rgb32_to_gray
2061         },
2062     },
2063     [PIX_FMT_BGR24] = {
2064         [PIX_FMT_RGB32] = {
2065             .convert = bgr24_to_rgb32
2066         },
2067         [PIX_FMT_RGB24] = {
2068             .convert = bgr24_to_rgb24
2069         },
2070         [PIX_FMT_YUV420P] = {
2071             .convert = bgr24_to_yuv420p
2072         },
2073         [PIX_FMT_GRAY8] = {
2074             .convert = bgr24_to_gray
2075         },
2076     },
2077     [PIX_FMT_RGB555] = {
2078         [PIX_FMT_RGB24] = {
2079             .convert = rgb555_to_rgb24
2080         },
2081         [PIX_FMT_RGB32] = {
2082             .convert = rgb555_to_rgb32
2083         },
2084         [PIX_FMT_YUV420P] = {
2085             .convert = rgb555_to_yuv420p
2086         },
2087         [PIX_FMT_GRAY8] = {
2088             .convert = rgb555_to_gray
2089         },
2090     },
2091     [PIX_FMT_RGB565] = {
2092         [PIX_FMT_RGB32] = {
2093             .convert = rgb565_to_rgb32
2094         },
2095         [PIX_FMT_RGB24] = {
2096             .convert = rgb565_to_rgb24
2097         },
2098         [PIX_FMT_YUV420P] = {
2099             .convert = rgb565_to_yuv420p
2100         },
2101         [PIX_FMT_GRAY8] = {
2102             .convert = rgb565_to_gray
2103         },
2104     },
2105     [PIX_FMT_GRAY16BE] = {
2106         [PIX_FMT_GRAY8] = {
2107             .convert = gray16be_to_gray
2108         },
2109         [PIX_FMT_GRAY16LE] = {
2110             .convert = gray16_to_gray16
2111         },
2112     },
2113     [PIX_FMT_GRAY16LE] = {
2114         [PIX_FMT_GRAY8] = {
2115             .convert = gray16le_to_gray
2116         },
2117         [PIX_FMT_GRAY16BE] = {
2118             .convert = gray16_to_gray16
2119         },
2120     },
2121     [PIX_FMT_GRAY8] = {
2122         [PIX_FMT_RGB555] = {
2123             .convert = gray_to_rgb555
2124         },
2125         [PIX_FMT_RGB565] = {
2126             .convert = gray_to_rgb565
2127         },
2128         [PIX_FMT_RGB24] = {
2129             .convert = gray_to_rgb24
2130         },
2131         [PIX_FMT_BGR24] = {
2132             .convert = gray_to_bgr24
2133         },
2134         [PIX_FMT_RGB32] = {
2135             .convert = gray_to_rgb32
2136         },
2137         [PIX_FMT_MONOWHITE] = {
2138             .convert = gray_to_monowhite
2139         },
2140         [PIX_FMT_MONOBLACK] = {
2141             .convert = gray_to_monoblack
2142         },
2143         [PIX_FMT_GRAY16LE] = {
2144             .convert = gray_to_gray16
2145         },
2146         [PIX_FMT_GRAY16BE] = {
2147             .convert = gray_to_gray16
2148         },
2149     },
2150     [PIX_FMT_MONOWHITE] = {
2151         [PIX_FMT_GRAY8] = {
2152             .convert = monowhite_to_gray
2153         },
2154     },
2155     [PIX_FMT_MONOBLACK] = {
2156         [PIX_FMT_GRAY8] = {
2157             .convert = monoblack_to_gray
2158         },
2159     },
2160     [PIX_FMT_PAL8] = {
2161         [PIX_FMT_RGB555] = {
2162             .convert = pal8_to_rgb555
2163         },
2164         [PIX_FMT_RGB565] = {
2165             .convert = pal8_to_rgb565
2166         },
2167         [PIX_FMT_BGR24] = {
2168             .convert = pal8_to_bgr24
2169         },
2170         [PIX_FMT_RGB24] = {
2171             .convert = pal8_to_rgb24
2172         },
2173         [PIX_FMT_RGB32] = {
2174             .convert = pal8_to_rgb32
2175         },
2176     },
2177     [PIX_FMT_UYYVYY411] = {
2178         [PIX_FMT_YUV411P] = {
2179             .convert = uyyvyy411_to_yuv411p,
2180         },
2181     },
2182
2183 };
2184
2185 int avpicture_alloc(AVPicture *picture,
2186                            int pix_fmt, int width, int height)
2187 {
2188     int size;
2189     void *ptr;
2190
2191     size = avpicture_get_size(pix_fmt, width, height);
2192     if(size<0)
2193         goto fail;
2194     ptr = av_malloc(size);
2195     if (!ptr)
2196         goto fail;
2197     avpicture_fill(picture, ptr, pix_fmt, width, height);
2198     return 0;
2199  fail:
2200     memset(picture, 0, sizeof(AVPicture));
2201     return -1;
2202 }
2203
2204 void avpicture_free(AVPicture *picture)
2205 {
2206     av_free(picture->data[0]);
2207 }
2208
2209 /* return true if yuv planar */
2210 static inline int is_yuv_planar(const PixFmtInfo *ps)
2211 {
2212     return (ps->color_type == FF_COLOR_YUV ||
2213             ps->color_type == FF_COLOR_YUV_JPEG) &&
2214         ps->pixel_type == FF_PIXEL_PLANAR;
2215 }
2216
2217 int av_picture_crop(AVPicture *dst, const AVPicture *src,
2218               int pix_fmt, int top_band, int left_band)
2219 {
2220     int y_shift;
2221     int x_shift;
2222
2223     if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
2224         return -1;
2225
2226     y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
2227     x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
2228
2229     dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
2230     dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
2231     dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
2232
2233     dst->linesize[0] = src->linesize[0];
2234     dst->linesize[1] = src->linesize[1];
2235     dst->linesize[2] = src->linesize[2];
2236     return 0;
2237 }
2238
2239 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
2240             int pix_fmt, int padtop, int padbottom, int padleft, int padright,
2241             int *color)
2242 {
2243     uint8_t *optr;
2244     int y_shift;
2245     int x_shift;
2246     int yheight;
2247     int i, y;
2248
2249     if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
2250         !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
2251
2252     for (i = 0; i < 3; i++) {
2253         x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
2254         y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
2255
2256         if (padtop || padleft) {
2257             memset(dst->data[i], color[i],
2258                 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
2259         }
2260
2261         if (padleft || padright) {
2262             optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
2263                 (dst->linesize[i] - (padright >> x_shift));
2264             yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
2265             for (y = 0; y < yheight; y++) {
2266                 memset(optr, color[i], (padleft + padright) >> x_shift);
2267                 optr += dst->linesize[i];
2268             }
2269         }
2270
2271         if (src) { /* first line */
2272             uint8_t *iptr = src->data[i];
2273             optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
2274                     (padleft >> x_shift);
2275             memcpy(optr, iptr, src->linesize[i]);
2276             iptr += src->linesize[i];
2277             optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
2278                 (dst->linesize[i] - (padright >> x_shift));
2279             yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
2280             for (y = 0; y < yheight; y++) {
2281                 memset(optr, color[i], (padleft + padright) >> x_shift);
2282                 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
2283                     src->linesize[i]);
2284                 iptr += src->linesize[i];
2285                 optr += dst->linesize[i];
2286             }
2287         }
2288
2289         if (padbottom || padright) {
2290             optr = dst->data[i] + dst->linesize[i] *
2291                 ((height - padbottom) >> y_shift) - (padright >> x_shift);
2292             memset(optr, color[i],dst->linesize[i] *
2293                 (padbottom >> y_shift) + (padright >> x_shift));
2294         }
2295     }
2296     return 0;
2297 }
2298
2299 #if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
2300 void img_copy(AVPicture *dst, const AVPicture *src,
2301               int pix_fmt, int width, int height)
2302 {
2303     av_picture_copy(dst, src, pix_fmt, width, height);
2304 }
2305
2306 int img_crop(AVPicture *dst, const AVPicture *src,
2307               int pix_fmt, int top_band, int left_band)
2308 {
2309     return av_picture_crop(dst, src, pix_fmt, top_band, left_band);
2310 }
2311
2312 int img_pad(AVPicture *dst, const AVPicture *src, int height, int width,
2313             int pix_fmt, int padtop, int padbottom, int padleft, int padright,
2314             int *color)
2315 {
2316     return av_picture_pad(dst, src, height, width, pix_fmt, padtop, padbottom, padleft, padright, color);
2317 }
2318 #endif
2319
2320 #ifndef CONFIG_SWSCALER
2321 /* XXX: always use linesize. Return -1 if not supported */
2322 int img_convert(AVPicture *dst, int dst_pix_fmt,
2323                 const AVPicture *src, int src_pix_fmt,
2324                 int src_width, int src_height)
2325 {
2326     static int inited;
2327     int i, ret, dst_width, dst_height, int_pix_fmt;
2328     const PixFmtInfo *src_pix, *dst_pix;
2329     const ConvertEntry *ce;
2330     AVPicture tmp1, *tmp = &tmp1;
2331
2332     if (src_pix_fmt < 0 || src_pix_fmt >= PIX_FMT_NB ||
2333         dst_pix_fmt < 0 || dst_pix_fmt >= PIX_FMT_NB)
2334         return -1;
2335     if (src_width <= 0 || src_height <= 0)
2336         return 0;
2337
2338     if (!inited) {
2339         inited = 1;
2340         img_convert_init();
2341     }
2342
2343     dst_width = src_width;
2344     dst_height = src_height;
2345
2346     dst_pix = &pix_fmt_info[dst_pix_fmt];
2347     src_pix = &pix_fmt_info[src_pix_fmt];
2348     if (src_pix_fmt == dst_pix_fmt) {
2349         /* no conversion needed: just copy */
2350         av_picture_copy(dst, src, dst_pix_fmt, dst_width, dst_height);
2351         return 0;
2352     }
2353
2354     ce = &convert_table[src_pix_fmt][dst_pix_fmt];
2355     if (ce->convert) {
2356         /* specific conversion routine */
2357         ce->convert(dst, src, dst_width, dst_height);
2358         return 0;
2359     }
2360
2361     /* gray to YUV */
2362     if (is_yuv_planar(dst_pix) &&
2363         src_pix_fmt == PIX_FMT_GRAY8) {
2364         int w, h, y;
2365         uint8_t *d;
2366
2367         if (dst_pix->color_type == FF_COLOR_YUV_JPEG) {
2368             ff_img_copy_plane(dst->data[0], dst->linesize[0],
2369                      src->data[0], src->linesize[0],
2370                      dst_width, dst_height);
2371         } else {
2372             img_apply_table(dst->data[0], dst->linesize[0],
2373                             src->data[0], src->linesize[0],
2374                             dst_width, dst_height,
2375                             y_jpeg_to_ccir);
2376         }
2377         /* fill U and V with 128 */
2378         w = dst_width;
2379         h = dst_height;
2380         w >>= dst_pix->x_chroma_shift;
2381         h >>= dst_pix->y_chroma_shift;
2382         for(i = 1; i <= 2; i++) {
2383             d = dst->data[i];
2384             for(y = 0; y< h; y++) {
2385                 memset(d, 128, w);
2386                 d += dst->linesize[i];
2387             }
2388         }
2389         return 0;
2390     }
2391
2392     /* YUV to gray */
2393     if (is_yuv_planar(src_pix) &&
2394         dst_pix_fmt == PIX_FMT_GRAY8) {
2395         if (src_pix->color_type == FF_COLOR_YUV_JPEG) {
2396             ff_img_copy_plane(dst->data[0], dst->linesize[0],
2397                      src->data[0], src->linesize[0],
2398                      dst_width, dst_height);
2399         } else {
2400             img_apply_table(dst->data[0], dst->linesize[0],
2401                             src->data[0], src->linesize[0],
2402                             dst_width, dst_height,
2403                             y_ccir_to_jpeg);
2404         }
2405         return 0;
2406     }
2407
2408     /* YUV to YUV planar */
2409     if (is_yuv_planar(dst_pix) && is_yuv_planar(src_pix)) {
2410         int x_shift, y_shift, w, h, xy_shift;
2411         void (*resize_func)(uint8_t *dst, int dst_wrap,
2412                             const uint8_t *src, int src_wrap,
2413                             int width, int height);
2414
2415         /* compute chroma size of the smallest dimensions */
2416         w = dst_width;
2417         h = dst_height;
2418         if (dst_pix->x_chroma_shift >= src_pix->x_chroma_shift)
2419             w >>= dst_pix->x_chroma_shift;
2420         else
2421             w >>= src_pix->x_chroma_shift;
2422         if (dst_pix->y_chroma_shift >= src_pix->y_chroma_shift)
2423             h >>= dst_pix->y_chroma_shift;
2424         else
2425             h >>= src_pix->y_chroma_shift;
2426
2427         x_shift = (dst_pix->x_chroma_shift - src_pix->x_chroma_shift);
2428         y_shift = (dst_pix->y_chroma_shift - src_pix->y_chroma_shift);
2429         xy_shift = ((x_shift & 0xf) << 4) | (y_shift & 0xf);
2430         /* there must be filters for conversion at least from and to
2431            YUV444 format */
2432         switch(xy_shift) {
2433         case 0x00:
2434             resize_func = ff_img_copy_plane;
2435             break;
2436         case 0x10:
2437             resize_func = shrink21;
2438             break;
2439         case 0x20:
2440             resize_func = shrink41;
2441             break;
2442         case 0x01:
2443             resize_func = shrink12;
2444             break;
2445         case 0x11:
2446             resize_func = ff_shrink22;
2447             break;
2448         case 0x22:
2449             resize_func = ff_shrink44;
2450             break;
2451         case 0xf0:
2452             resize_func = grow21;
2453             break;
2454         case 0xe0:
2455             resize_func = grow41;
2456             break;
2457         case 0xff:
2458             resize_func = grow22;
2459             break;
2460         case 0xee:
2461             resize_func = grow44;
2462             break;
2463         case 0xf1:
2464             resize_func = conv411;
2465             break;
2466         default:
2467             /* currently not handled */
2468             goto no_chroma_filter;
2469         }
2470
2471         ff_img_copy_plane(dst->data[0], dst->linesize[0],
2472                        src->data[0], src->linesize[0],
2473                        dst_width, dst_height);
2474
2475         for(i = 1;i <= 2; i++)
2476             resize_func(dst->data[i], dst->linesize[i],
2477                         src->data[i], src->linesize[i],
2478                         dst_width>>dst_pix->x_chroma_shift, dst_height>>dst_pix->y_chroma_shift);
2479         /* if yuv color space conversion is needed, we do it here on
2480            the destination image */
2481         if (dst_pix->color_type != src_pix->color_type) {
2482             const uint8_t *y_table, *c_table;
2483             if (dst_pix->color_type == FF_COLOR_YUV) {
2484                 y_table = y_jpeg_to_ccir;
2485                 c_table = c_jpeg_to_ccir;
2486             } else {
2487                 y_table = y_ccir_to_jpeg;
2488                 c_table = c_ccir_to_jpeg;
2489             }
2490             img_apply_table(dst->data[0], dst->linesize[0],
2491                             dst->data[0], dst->linesize[0],
2492                             dst_width, dst_height,
2493                             y_table);
2494
2495             for(i = 1;i <= 2; i++)
2496                 img_apply_table(dst->data[i], dst->linesize[i],
2497                                 dst->data[i], dst->linesize[i],
2498                                 dst_width>>dst_pix->x_chroma_shift,
2499                                 dst_height>>dst_pix->y_chroma_shift,
2500                                 c_table);
2501         }
2502         return 0;
2503     }
2504  no_chroma_filter:
2505
2506     /* try to use an intermediate format */
2507     if (src_pix_fmt == PIX_FMT_YUYV422 ||
2508         dst_pix_fmt == PIX_FMT_YUYV422) {
2509         /* specific case: convert to YUV422P first */
2510         int_pix_fmt = PIX_FMT_YUV422P;
2511     } else if (src_pix_fmt == PIX_FMT_UYVY422 ||
2512         dst_pix_fmt == PIX_FMT_UYVY422) {
2513         /* specific case: convert to YUV422P first */
2514         int_pix_fmt = PIX_FMT_YUV422P;
2515     } else if (src_pix_fmt == PIX_FMT_UYYVYY411 ||
2516         dst_pix_fmt == PIX_FMT_UYYVYY411) {
2517         /* specific case: convert to YUV411P first */
2518         int_pix_fmt = PIX_FMT_YUV411P;
2519     } else if ((src_pix->color_type == FF_COLOR_GRAY &&
2520                 src_pix_fmt != PIX_FMT_GRAY8) ||
2521                (dst_pix->color_type == FF_COLOR_GRAY &&
2522                 dst_pix_fmt != PIX_FMT_GRAY8)) {
2523         /* gray8 is the normalized format */
2524         int_pix_fmt = PIX_FMT_GRAY8;
2525     } else if ((is_yuv_planar(src_pix) &&
2526                 src_pix_fmt != PIX_FMT_YUV444P &&
2527                 src_pix_fmt != PIX_FMT_YUVJ444P)) {
2528         /* yuv444 is the normalized format */
2529         if (src_pix->color_type == FF_COLOR_YUV_JPEG)
2530             int_pix_fmt = PIX_FMT_YUVJ444P;
2531         else
2532             int_pix_fmt = PIX_FMT_YUV444P;
2533     } else if ((is_yuv_planar(dst_pix) &&
2534                 dst_pix_fmt != PIX_FMT_YUV444P &&
2535                 dst_pix_fmt != PIX_FMT_YUVJ444P)) {
2536         /* yuv444 is the normalized format */
2537         if (dst_pix->color_type == FF_COLOR_YUV_JPEG)
2538             int_pix_fmt = PIX_FMT_YUVJ444P;
2539         else
2540             int_pix_fmt = PIX_FMT_YUV444P;
2541     } else {
2542         /* the two formats are rgb or gray8 or yuv[j]444p */
2543         if (src_pix->is_alpha && dst_pix->is_alpha)
2544             int_pix_fmt = PIX_FMT_RGB32;
2545         else
2546             int_pix_fmt = PIX_FMT_RGB24;
2547     }
2548     if (avpicture_alloc(tmp, int_pix_fmt, dst_width, dst_height) < 0)
2549         return -1;
2550     ret = -1;
2551     if (img_convert(tmp, int_pix_fmt,
2552                     src, src_pix_fmt, src_width, src_height) < 0)
2553         goto fail1;
2554     if (img_convert(dst, dst_pix_fmt,
2555                     tmp, int_pix_fmt, dst_width, dst_height) < 0)
2556         goto fail1;
2557     ret = 0;
2558  fail1:
2559     avpicture_free(tmp);
2560     return ret;
2561 }
2562 #endif
2563
2564 /* NOTE: we scan all the pixels to have an exact information */
2565 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
2566 {
2567     const unsigned char *p;
2568     int src_wrap, ret, x, y;
2569     unsigned int a;
2570     uint32_t *palette = (uint32_t *)src->data[1];
2571
2572     p = src->data[0];
2573     src_wrap = src->linesize[0] - width;
2574     ret = 0;
2575     for(y=0;y<height;y++) {
2576         for(x=0;x<width;x++) {
2577             a = palette[p[0]] >> 24;
2578             if (a == 0x00) {
2579                 ret |= FF_ALPHA_TRANSP;
2580             } else if (a != 0xff) {
2581                 ret |= FF_ALPHA_SEMI_TRANSP;
2582             }
2583             p++;
2584         }
2585         p += src_wrap;
2586     }
2587     return ret;
2588 }
2589
2590 int img_get_alpha_info(const AVPicture *src,
2591                        int pix_fmt, int width, int height)
2592 {
2593     const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
2594     int ret;
2595
2596     pf = &pix_fmt_info[pix_fmt];
2597     /* no alpha can be represented in format */
2598     if (!pf->is_alpha)
2599         return 0;
2600     switch(pix_fmt) {
2601     case PIX_FMT_RGB32:
2602         ret = get_alpha_info_rgb32(src, width, height);
2603         break;
2604     case PIX_FMT_PAL8:
2605         ret = get_alpha_info_pal8(src, width, height);
2606         break;
2607     default:
2608         /* we do not know, so everything is indicated */
2609         ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
2610         break;
2611     }
2612     return ret;
2613 }
2614
2615 #ifdef HAVE_MMX
2616 #define DEINT_INPLACE_LINE_LUM \
2617                     movd_m2r(lum_m4[0],mm0);\
2618                     movd_m2r(lum_m3[0],mm1);\
2619                     movd_m2r(lum_m2[0],mm2);\
2620                     movd_m2r(lum_m1[0],mm3);\
2621                     movd_m2r(lum[0],mm4);\
2622                     punpcklbw_r2r(mm7,mm0);\
2623                     movd_r2m(mm2,lum_m4[0]);\
2624                     punpcklbw_r2r(mm7,mm1);\
2625                     punpcklbw_r2r(mm7,mm2);\
2626                     punpcklbw_r2r(mm7,mm3);\
2627                     punpcklbw_r2r(mm7,mm4);\
2628                     paddw_r2r(mm3,mm1);\
2629                     psllw_i2r(1,mm2);\
2630                     paddw_r2r(mm4,mm0);\
2631                     psllw_i2r(2,mm1);\
2632                     paddw_r2r(mm6,mm2);\
2633                     paddw_r2r(mm2,mm1);\
2634                     psubusw_r2r(mm0,mm1);\
2635                     psrlw_i2r(3,mm1);\
2636                     packuswb_r2r(mm7,mm1);\
2637                     movd_r2m(mm1,lum_m2[0]);
2638
2639 #define DEINT_LINE_LUM \
2640                     movd_m2r(lum_m4[0],mm0);\
2641                     movd_m2r(lum_m3[0],mm1);\
2642                     movd_m2r(lum_m2[0],mm2);\
2643                     movd_m2r(lum_m1[0],mm3);\
2644                     movd_m2r(lum[0],mm4);\
2645                     punpcklbw_r2r(mm7,mm0);\
2646                     punpcklbw_r2r(mm7,mm1);\
2647                     punpcklbw_r2r(mm7,mm2);\
2648                     punpcklbw_r2r(mm7,mm3);\
2649                     punpcklbw_r2r(mm7,mm4);\
2650                     paddw_r2r(mm3,mm1);\
2651                     psllw_i2r(1,mm2);\
2652                     paddw_r2r(mm4,mm0);\
2653                     psllw_i2r(2,mm1);\
2654                     paddw_r2r(mm6,mm2);\
2655                     paddw_r2r(mm2,mm1);\
2656                     psubusw_r2r(mm0,mm1);\
2657                     psrlw_i2r(3,mm1);\
2658                     packuswb_r2r(mm7,mm1);\
2659                     movd_r2m(mm1,dst[0]);
2660 #endif
2661
2662 /* filter parameters: [-1 4 2 4 -1] // 8 */
2663 static void deinterlace_line(uint8_t *dst,
2664                              const uint8_t *lum_m4, const uint8_t *lum_m3,
2665                              const uint8_t *lum_m2, const uint8_t *lum_m1,
2666                              const uint8_t *lum,
2667                              int size)
2668 {
2669 #ifndef HAVE_MMX
2670     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
2671     int sum;
2672
2673     for(;size > 0;size--) {
2674         sum = -lum_m4[0];
2675         sum += lum_m3[0] << 2;
2676         sum += lum_m2[0] << 1;
2677         sum += lum_m1[0] << 2;
2678         sum += -lum[0];
2679         dst[0] = cm[(sum + 4) >> 3];
2680         lum_m4++;
2681         lum_m3++;
2682         lum_m2++;
2683         lum_m1++;
2684         lum++;
2685         dst++;
2686     }
2687 #else
2688
2689     {
2690         mmx_t rounder;
2691         rounder.uw[0]=4;
2692         rounder.uw[1]=4;
2693         rounder.uw[2]=4;
2694         rounder.uw[3]=4;
2695         pxor_r2r(mm7,mm7);
2696         movq_m2r(rounder,mm6);
2697     }
2698     for (;size > 3; size-=4) {
2699         DEINT_LINE_LUM
2700         lum_m4+=4;
2701         lum_m3+=4;
2702         lum_m2+=4;
2703         lum_m1+=4;
2704         lum+=4;
2705         dst+=4;
2706     }
2707 #endif
2708 }
2709 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
2710                              int size)
2711 {
2712 #ifndef HAVE_MMX
2713     uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
2714     int sum;
2715
2716     for(;size > 0;size--) {
2717         sum = -lum_m4[0];
2718         sum += lum_m3[0] << 2;
2719         sum += lum_m2[0] << 1;
2720         lum_m4[0]=lum_m2[0];
2721         sum += lum_m1[0] << 2;
2722         sum += -lum[0];
2723         lum_m2[0] = cm[(sum + 4) >> 3];
2724         lum_m4++;
2725         lum_m3++;
2726         lum_m2++;
2727         lum_m1++;
2728         lum++;
2729     }
2730 #else
2731
2732     {
2733         mmx_t rounder;
2734         rounder.uw[0]=4;
2735         rounder.uw[1]=4;
2736         rounder.uw[2]=4;
2737         rounder.uw[3]=4;
2738         pxor_r2r(mm7,mm7);
2739         movq_m2r(rounder,mm6);
2740     }
2741     for (;size > 3; size-=4) {
2742         DEINT_INPLACE_LINE_LUM
2743         lum_m4+=4;
2744         lum_m3+=4;
2745         lum_m2+=4;
2746         lum_m1+=4;
2747         lum+=4;
2748     }
2749 #endif
2750 }
2751
2752 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
2753    top field is copied as is, but the bottom field is deinterlaced
2754    against the top field. */
2755 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
2756                                     const uint8_t *src1, int src_wrap,
2757                                     int width, int height)
2758 {
2759     const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
2760     int y;
2761
2762     src_m2 = src1;
2763     src_m1 = src1;
2764     src_0=&src_m1[src_wrap];
2765     src_p1=&src_0[src_wrap];
2766     src_p2=&src_p1[src_wrap];
2767     for(y=0;y<(height-2);y+=2) {
2768         memcpy(dst,src_m1,width);
2769         dst += dst_wrap;
2770         deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
2771         src_m2 = src_0;
2772         src_m1 = src_p1;
2773         src_0 = src_p2;
2774         src_p1 += 2*src_wrap;
2775         src_p2 += 2*src_wrap;
2776         dst += dst_wrap;
2777     }
2778     memcpy(dst,src_m1,width);
2779     dst += dst_wrap;
2780     /* do last line */
2781     deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
2782 }
2783
2784 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
2785                                              int width, int height)
2786 {
2787     uint8_t *src_m1, *src_0, *src_p1, *src_p2;
2788     int y;
2789     uint8_t *buf;
2790     buf = (uint8_t*)av_malloc(width);
2791
2792     src_m1 = src1;
2793     memcpy(buf,src_m1,width);
2794     src_0=&src_m1[src_wrap];
2795     src_p1=&src_0[src_wrap];
2796     src_p2=&src_p1[src_wrap];
2797     for(y=0;y<(height-2);y+=2) {
2798         deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
2799         src_m1 = src_p1;
2800         src_0 = src_p2;
2801         src_p1 += 2*src_wrap;
2802         src_p2 += 2*src_wrap;
2803     }
2804     /* do last line */
2805     deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
2806     av_free(buf);
2807 }
2808
2809 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
2810                           int pix_fmt, int width, int height)
2811 {
2812     int i;
2813
2814     if (pix_fmt != PIX_FMT_YUV420P &&
2815         pix_fmt != PIX_FMT_YUV422P &&
2816         pix_fmt != PIX_FMT_YUV444P &&
2817         pix_fmt != PIX_FMT_YUV411P)
2818         return -1;
2819     if ((width & 3) != 0 || (height & 3) != 0)
2820         return -1;
2821
2822     for(i=0;i<3;i++) {
2823         if (i == 1) {
2824             switch(pix_fmt) {
2825             case PIX_FMT_YUV420P:
2826                 width >>= 1;
2827                 height >>= 1;
2828                 break;
2829             case PIX_FMT_YUV422P:
2830                 width >>= 1;
2831                 break;
2832             case PIX_FMT_YUV411P:
2833                 width >>= 2;
2834                 break;
2835             default:
2836                 break;
2837             }
2838         }
2839         if (src == dst) {
2840             deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
2841                                  width, height);
2842         } else {
2843             deinterlace_bottom_field(dst->data[i],dst->linesize[i],
2844                                         src->data[i], src->linesize[i],
2845                                         width, height);
2846         }
2847     }
2848 #ifdef HAVE_MMX
2849     emms();
2850 #endif
2851     return 0;
2852 }
2853
2854 #undef FIX