libavcodec/indeo3.c

   1 /*
   2  * Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg
   3  * written, produced, and directed by Alan Smithee
   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 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <unistd.h>
  26
  27 #include "avcodec.h"
  28 #include "dsputil.h"
  29 #include "bytestream.h"
  30
  31 #include "indeo3data.h"
  32
  33 typedef struct
  34 {
  35     uint8_t *Ybuf;
  36     uint8_t *Ubuf;
  37     uint8_t *Vbuf;
  38     unsigned int the_buf_size;
  39     unsigned short y_w, y_h;
  40     unsigned short uv_w, uv_h;
  41 } YUVBufs;
  42
  43 typedef struct Indeo3DecodeContext {
  44     AVCodecContext *avctx;
  45     int width, height;
  46     AVFrame frame;
  47
  48     uint8_t *buf;
  49     YUVBufs iv_frame[2];
  50     YUVBufs *cur_frame;
  51     YUVBufs *ref_frame;
  52
  53     uint8_t *ModPred;
  54     uint8_t *corrector_type;
  55 } Indeo3DecodeContext;
  56
  57 static const uint8_t corrector_type_0[24] = {
  58     195, 159, 133, 115, 101,  93,  87,  77,
  59     195, 159, 133, 115, 101,  93,  87,  77,
  60     128,  79,  79,  79,  79,  79,  79,  79
  61 };
  62
  63 static const uint8_t corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 };
  64
  65 static av_cold int build_modpred(Indeo3DecodeContext *s)
  66 {
  67     int i, j;
  68
  69     if (!(s->ModPred = av_malloc(8 * 128)))
  70         return AVERROR(ENOMEM);
  71
  72     for (i=0; i < 128; ++i) {
  73         s->ModPred[i+0*128] = i >  126 ? 254 : 2*(i + 1 - ((i + 1) % 2));
  74         s->ModPred[i+1*128] = i ==   7 ?  20 :
  75                               i == 119 ||
  76                               i == 120 ? 236 : 2*(i + 2 - ((i + 1) % 3));
  77         s->ModPred[i+2*128] = i >  125 ? 248 : 2*(i + 2 - ((i + 2) % 4));
  78         s->ModPred[i+3*128] =                  2*(i + 1 - ((i - 3) % 5));
  79         s->ModPred[i+4*128] = i ==   8 ?  20 : 2*(i + 1 - ((i - 3) % 6));
  80         s->ModPred[i+5*128] =                  2*(i + 4 - ((i + 3) % 7));
  81         s->ModPred[i+6*128] = i >  123 ? 240 : 2*(i + 4 - ((i + 4) % 8));
  82         s->ModPred[i+7*128] =                  2*(i + 5 - ((i + 4) % 9));
  83     }
  84
  85     if (!(s->corrector_type = av_malloc(24 * 256)))
  86         return AVERROR(ENOMEM);
  87
  88     for (i=0; i < 24; ++i) {
  89         for (j=0; j < 256; ++j) {
  90             s->corrector_type[i*256+j] = j < corrector_type_0[i]          ? 1 :
  91                                          j < 248 || (i == 16 && j == 248) ? 0 :
  92                                          corrector_type_2[j - 248];
  93         }
  94     }
  95
  96   return 0;
  97 }
  98
  99 static void iv_Decode_Chunk(Indeo3DecodeContext *s, uint8_t *cur,
 100         uint8_t *ref, int width, int height, const uint8_t *buf1,
 101         long fflags2, const uint8_t *hdr,
 102         const uint8_t *buf2, int min_width_160);
 103
 104 /* ---------------------------------------------------------------------- */
 105 static av_cold int iv_alloc_frames(Indeo3DecodeContext *s)
 106 {
 107     int luma_width, luma_height, luma_pixels, chroma_width, chroma_height,
 108         chroma_pixels, i;
 109     unsigned int bufsize;
 110
 111     luma_width   = (s->width  + 3) & (~3);
 112     luma_height  = (s->height + 3) & (~3);
 113     chroma_width  = ((luma_width >> 2) + 3) & (~3);
 114     chroma_height = ((luma_height>> 2) + 3) & (~3);
 115     luma_pixels = luma_width * luma_height;
 116     chroma_pixels = chroma_width * chroma_height;
 117
 118     bufsize = luma_pixels * 2 + luma_width * 3 +
 119         (chroma_pixels + chroma_width) * 4;
 120
 121     if(!(s->buf = av_malloc(bufsize)))
 122         return AVERROR(ENOMEM);
 123     s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width;
 124     s->iv_frame[0].y_h = s->iv_frame[1].y_h = luma_height;
 125     s->iv_frame[0].uv_w = s->iv_frame[1].uv_w = chroma_width;
 126     s->iv_frame[0].uv_h = s->iv_frame[1].uv_h = chroma_height;
 127     s->iv_frame[0].the_buf_size = bufsize;
 128
 129     s->iv_frame[0].Ybuf = s->buf + luma_width;
 130     i = luma_pixels + luma_width * 2;
 131     s->iv_frame[1].Ybuf = s->buf + i;
 132     i += (luma_pixels + luma_width);
 133     s->iv_frame[0].Ubuf = s->buf + i;
 134     i += (chroma_pixels + chroma_width);
 135     s->iv_frame[1].Ubuf = s->buf + i;
 136     i += (chroma_pixels + chroma_width);
 137     s->iv_frame[0].Vbuf = s->buf + i;
 138     i += (chroma_pixels + chroma_width);
 139     s->iv_frame[1].Vbuf = s->buf + i;
 140
 141     for(i = 1; i <= luma_width; i++)
 142         s->iv_frame[0].Ybuf[-i] = s->iv_frame[1].Ybuf[-i] =
 143             s->iv_frame[0].Ubuf[-i] = 0x80;
 144
 145     for(i = 1; i <= chroma_width; i++) {
 146         s->iv_frame[1].Ubuf[-i] = 0x80;
 147         s->iv_frame[0].Vbuf[-i] = 0x80;
 148         s->iv_frame[1].Vbuf[-i] = 0x80;
 149         s->iv_frame[1].Vbuf[chroma_pixels+i-1] = 0x80;
 150     }
 151
 152     return 0;
 153 }
 154
 155 /* ---------------------------------------------------------------------- */
 156 static av_cold void iv_free_func(Indeo3DecodeContext *s)
 157 {
 158     av_free(s->buf);
 159     av_free(s->ModPred);
 160     av_free(s->corrector_type);
 161 }
 162
 163 /* ---------------------------------------------------------------------- */
 164 static unsigned long iv_decode_frame(Indeo3DecodeContext *s,
 165                                      const uint8_t *buf, int buf_size)
 166 {
 167     unsigned int hdr_width, hdr_height,
 168                  chroma_width, chroma_height;
 169     unsigned long fflags1, fflags2, fflags3, offs1, offs2, offs3, offs;
 170     const uint8_t *hdr_pos, *buf_pos;
 171
 172     buf_pos = buf;
 173     buf_pos += 18;
 174
 175     fflags1 = bytestream_get_le16(&buf_pos);
 176     fflags3 = bytestream_get_le32(&buf_pos);
 177     fflags2 = *buf_pos++;
 178     buf_pos += 3;
 179     hdr_height = bytestream_get_le16(&buf_pos);
 180     hdr_width  = bytestream_get_le16(&buf_pos);
 181
 182     if(avcodec_check_dimensions(NULL, hdr_width, hdr_height))
 183         return -1;
 184
 185     chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
 186     chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;
 187     offs1 = bytestream_get_le32(&buf_pos);
 188     offs2 = bytestream_get_le32(&buf_pos);
 189     offs3 = bytestream_get_le32(&buf_pos);
 190     buf_pos += 4;
 191     hdr_pos = buf_pos;
 192     if(fflags3 == 0x80) return 4;
 193
 194     if(fflags1 & 0x200) {
 195         s->cur_frame = s->iv_frame + 1;
 196         s->ref_frame = s->iv_frame;
 197     } else {
 198         s->cur_frame = s->iv_frame;
 199         s->ref_frame = s->iv_frame + 1;
 200     }
 201
 202     buf_pos = buf + 16 + offs1;
 203     offs = bytestream_get_le32(&buf_pos);
 204
 205     iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width,
 206                     hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
 207                     FFMIN(hdr_width, 160));
 208
 209     if (!(s->avctx->flags & CODEC_FLAG_GRAY))
 210     {
 211
 212         buf_pos = buf + 16 + offs2;
 213         offs = bytestream_get_le32(&buf_pos);
 214
 215         iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
 216                 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
 217                 FFMIN(chroma_width, 40));
 218
 219         buf_pos = buf + 16 + offs3;
 220         offs = bytestream_get_le32(&buf_pos);
 221
 222         iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
 223                 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
 224                 FFMIN(chroma_width, 40));
 225
 226     }
 227
 228     return 8;
 229 }
 230
 231 typedef struct {
 232     long xpos;
 233     long ypos;
 234     long width;
 235     long height;
 236     long split_flag;
 237     long split_direction;
 238     long usl7;
 239 } ustr_t;
 240
 241 /* ---------------------------------------------------------------------- */
 242
 243 #define LV1_CHECK(buf1,rle_v3,lv1,lp2)  \
 244     if((lv1 & 0x80) != 0) {             \
 245         if(rle_v3 != 0)                 \
 246             rle_v3 = 0;                 \
 247         else {                          \
 248             rle_v3 = 1;                 \
 249             buf1 -= 2;                  \
 250         }                               \
 251     }                                   \
 252     lp2 = 4;
 253
 254
 255 #define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)  \
 256     if(rle_v3 == 0) {                            \
 257         rle_v2 = *buf1;                          \
 258         rle_v1 = 1;                              \
 259         if(rle_v2 > 32) {                        \
 260             rle_v2 -= 32;                        \
 261             rle_v1 = 0;                          \
 262         }                                        \
 263         rle_v3 = 1;                              \
 264     }                                            \
 265     buf1--;
 266
 267
 268 #define LP2_CHECK(buf1,rle_v3,lp2)  \
 269     if(lp2 == 0 && rle_v3 != 0)     \
 270         rle_v3 = 0;                 \
 271     else {                          \
 272         buf1--;                     \
 273         rle_v3 = 1;                 \
 274     }
 275
 276
 277 #define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
 278     rle_v2--;                                 \
 279     if(rle_v2 == 0) {                         \
 280         rle_v3 = 0;                           \
 281         buf1 += 2;                            \
 282     }                                         \
 283     lp2 = 4;
 284
 285 static void iv_Decode_Chunk(Indeo3DecodeContext *s,
 286         uint8_t *cur, uint8_t *ref, int width, int height,
 287         const uint8_t *buf1, long fflags2, const uint8_t *hdr,
 288         const uint8_t *buf2, int min_width_160)
 289 {
 290     uint8_t bit_buf;
 291     unsigned long bit_pos, lv, lv1, lv2;
 292     long *width_tbl, width_tbl_arr[10];
 293     const signed char *ref_vectors;
 294     uint8_t *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
 295     uint32_t *cur_lp, *ref_lp;
 296     const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
 297     uint8_t *correction_type_sp[2];
 298     ustr_t strip_tbl[20], *strip;
 299     int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
 300         rle_v1, rle_v2, rle_v3;
 301     unsigned short res;
 302
 303     bit_buf = 0;
 304     ref_vectors = NULL;
 305
 306     width_tbl = width_tbl_arr + 1;
 307     i = (width < 0 ? width + 3 : width)/4;
 308     for(j = -1; j < 8; j++)
 309         width_tbl[j] = i * j;
 310
 311     strip = strip_tbl;
 312
 313     for(region_160_width = 0; region_160_width < (width - min_width_160); region_160_width += min_width_160);
 314
 315     strip->ypos = strip->xpos = 0;
 316     for(strip->width = min_width_160; width > strip->width; strip->width *= 2);
 317     strip->height = height;
 318     strip->split_direction = 0;
 319     strip->split_flag = 0;
 320     strip->usl7 = 0;
 321
 322     bit_pos = 0;
 323
 324     rle_v1 = rle_v2 = rle_v3 = 0;
 325
 326     while(strip >= strip_tbl) {
 327         if(bit_pos <= 0) {
 328             bit_pos = 8;
 329             bit_buf = *buf1++;
 330         }
 331
 332         bit_pos -= 2;
 333         cmd = (bit_buf >> bit_pos) & 0x03;
 334
 335         if(cmd == 0) {
 336             strip++;
 337             memcpy(strip, strip-1, sizeof(ustr_t));
 338             strip->split_flag = 1;
 339             strip->split_direction = 0;
 340             strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4);
 341             continue;
 342         } else if(cmd == 1) {
 343             strip++;
 344             memcpy(strip, strip-1, sizeof(ustr_t));
 345             strip->split_flag = 1;
 346             strip->split_direction = 1;
 347             strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4);
 348             continue;
 349         } else if(cmd == 2) {
 350             if(strip->usl7 == 0) {
 351                 strip->usl7 = 1;
 352                 ref_vectors = NULL;
 353                 continue;
 354             }
 355         } else if(cmd == 3) {
 356             if(strip->usl7 == 0) {
 357                 strip->usl7 = 1;
 358                 ref_vectors = (const signed char*)buf2 + (*buf1 * 2);
 359                 buf1++;
 360                 continue;
 361             }
 362         }
 363
 364         cur_frm_pos = cur + width * strip->ypos + strip->xpos;
 365
 366         if((blks_width = strip->width) < 0)
 367             blks_width += 3;
 368         blks_width >>= 2;
 369         blks_height = strip->height;
 370
 371         if(ref_vectors != NULL) {
 372             ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +
 373                 ref_vectors[1] + strip->xpos;
 374         } else
 375             ref_frm_pos = cur_frm_pos - width_tbl[4];
 376
 377         if(cmd == 2) {
 378             if(bit_pos <= 0) {
 379                 bit_pos = 8;
 380                 bit_buf = *buf1++;
 381             }
 382
 383             bit_pos -= 2;
 384             cmd = (bit_buf >> bit_pos) & 0x03;
 385
 386             if(cmd == 0 || ref_vectors != NULL) {
 387                 for(lp1 = 0; lp1 < blks_width; lp1++) {
 388                     for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])
 389                         ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
 390                     cur_frm_pos += 4;
 391                     ref_frm_pos += 4;
 392                 }
 393             } else if(cmd != 1)
 394                 return;
 395         } else {
 396             k = *buf1 >> 4;
 397             j = *buf1 & 0x0f;
 398             buf1++;
 399             lv = j + fflags2;
 400
 401             if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {
 402                 cp2 = s->ModPred + ((lv - 8) << 7);
 403                 cp = ref_frm_pos;
 404                 for(i = 0; i < blks_width << 2; i++) {
 405                     int v = *cp >> 1;
 406                     *(cp++) = cp2[v];
 407                 }
 408             }
 409
 410             if(k == 1 || k == 4) {
 411                 lv = (hdr[j] & 0xf) + fflags2;
 412                 correction_type_sp[0] = s->corrector_type + (lv << 8);
 413                 correction_lp[0] = correction + (lv << 8);
 414                 lv = (hdr[j] >> 4) + fflags2;
 415                 correction_lp[1] = correction + (lv << 8);
 416                 correction_type_sp[1] = s->corrector_type + (lv << 8);
 417             } else {
 418                 correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
 419                 correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
 420                 correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
 421                 correction_lp[0] = correction_lp[1] = correction + (lv << 8);
 422             }
 423
 424             switch(k) {
 425             case 1:
 426             case 0:                    /********** CASE 0 **********/
 427                 for( ; blks_height > 0; blks_height -= 4) {
 428                     for(lp1 = 0; lp1 < blks_width; lp1++) {
 429                         for(lp2 = 0; lp2 < 4; ) {
 430                             k = *buf1++;
 431                             cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];
 432                             ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];
 433
 434                             switch(correction_type_sp[0][k]) {
 435                             case 0:
 436                                 *cur_lp = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
 437                                 lp2++;
 438                                 break;
 439                             case 1:
 440                                 res = ((le2me_16(((unsigned short *)(ref_lp))[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
 441                                 ((unsigned short *)cur_lp)[0] = le2me_16(res);
 442                                 res = ((le2me_16(((unsigned short *)(ref_lp))[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
 443                                 ((unsigned short *)cur_lp)[1] = le2me_16(res);
 444                                 buf1++;
 445                                 lp2++;
 446                                 break;
 447                             case 2:
 448                                 if(lp2 == 0) {
 449                                     for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
 450                                         cur_lp[j] = ref_lp[j];
 451                                     lp2 += 2;
 452                                 }
 453                                 break;
 454                             case 3:
 455                                 if(lp2 < 2) {
 456                                     for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
 457                                         cur_lp[j] = ref_lp[j];
 458                                     lp2 = 3;
 459                                 }
 460                                 break;
 461                             case 8:
 462                                 if(lp2 == 0) {
 463                                     RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
 464
 465                                         if(rle_v1 == 1 || ref_vectors != NULL) {
 466                                             for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 467                                                 cur_lp[j] = ref_lp[j];
 468                                         }
 469
 470                                     RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
 471                                         break;
 472                                 } else {
 473                                     rle_v1 = 1;
 474                                     rle_v2 = *buf1 - 1;
 475                                 }
 476                             case 5:
 477                                 LP2_CHECK(buf1,rle_v3,lp2)
 478                             case 4:
 479                                 for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
 480                                     cur_lp[j] = ref_lp[j];
 481                                 lp2 = 4;
 482                                 break;
 483
 484                             case 7:
 485                                 if(rle_v3 != 0)
 486                                     rle_v3 = 0;
 487                                 else {
 488                                     buf1--;
 489                                     rle_v3 = 1;
 490                                 }
 491                             case 6:
 492                                 if(ref_vectors != NULL) {
 493                                     for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 494                                         cur_lp[j] = ref_lp[j];
 495                                 }
 496                                 lp2 = 4;
 497                                 break;
 498
 499                             case 9:
 500                                 lv1 = *buf1++;
 501                                 lv = (lv1 & 0x7F) << 1;
 502                                 lv += (lv << 8);
 503                                 lv += (lv << 16);
 504                                 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 505                                     cur_lp[j] = lv;
 506
 507                                 LV1_CHECK(buf1,rle_v3,lv1,lp2)
 508                                     break;
 509                             default:
 510                                 return;
 511                             }
 512                         }
 513
 514                         cur_frm_pos += 4;
 515                         ref_frm_pos += 4;
 516                     }
 517
 518                     cur_frm_pos += ((width - blks_width) * 4);
 519                     ref_frm_pos += ((width - blks_width) * 4);
 520                 }
 521                 break;
 522
 523             case 4:
 524             case 3:                    /********** CASE 3 **********/
 525                 if(ref_vectors != NULL)
 526                     return;
 527                 flag1 = 1;
 528
 529                 for( ; blks_height > 0; blks_height -= 8) {
 530                     for(lp1 = 0; lp1 < blks_width; lp1++) {
 531                         for(lp2 = 0; lp2 < 4; ) {
 532                             k = *buf1++;
 533
 534                             cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
 535                             ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
 536
 537                             switch(correction_type_sp[lp2 & 0x01][k]) {
 538                             case 0:
 539                                 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
 540                                 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
 541                                     cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 542                                 else
 543                                     cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
 544                                 lp2++;
 545                                 break;
 546
 547                             case 1:
 548                                 res = ((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
 549                                 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
 550                                 res = ((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
 551                                 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
 552
 553                                 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
 554                                     cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 555                                 else
 556                                     cur_lp[0] = cur_lp[width_tbl[1]];
 557                                 buf1++;
 558                                 lp2++;
 559                                 break;
 560
 561                             case 2:
 562                                 if(lp2 == 0) {
 563                                     for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 564                                         cur_lp[j] = *ref_lp;
 565                                     lp2 += 2;
 566                                 }
 567                                 break;
 568
 569                             case 3:
 570                                 if(lp2 < 2) {
 571                                     for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
 572                                         cur_lp[j] = *ref_lp;
 573                                     lp2 = 3;
 574                                 }
 575                                 break;
 576
 577                             case 6:
 578                                 lp2 = 4;
 579                                 break;
 580
 581                             case 7:
 582                                 if(rle_v3 != 0)
 583                                     rle_v3 = 0;
 584                                 else {
 585                                     buf1--;
 586                                     rle_v3 = 1;
 587                                 }
 588                                 lp2 = 4;
 589                                 break;
 590
 591                             case 8:
 592                                 if(lp2 == 0) {
 593                                     RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
 594
 595                                     if(rle_v1 == 1) {
 596                                         for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
 597                                             cur_lp[j] = ref_lp[j];
 598                                     }
 599
 600                                     RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
 601                                     break;
 602                                 } else {
 603                                     rle_v2 = (*buf1) - 1;
 604                                     rle_v1 = 1;
 605                                 }
 606                             case 5:
 607                                 LP2_CHECK(buf1,rle_v3,lp2)
 608                             case 4:
 609                                 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
 610                                     cur_lp[j] = *ref_lp;
 611                                 lp2 = 4;
 612                                 break;
 613
 614                             case 9:
 615                                 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
 616                                 lv1 = *buf1++;
 617                                 lv = (lv1 & 0x7F) << 1;
 618                                 lv += (lv << 8);
 619                                 lv += (lv << 16);
 620
 621                                 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 622                                     cur_lp[j] = lv;
 623
 624                                 LV1_CHECK(buf1,rle_v3,lv1,lp2)
 625                                 break;
 626
 627                             default:
 628                                 return;
 629                             }
 630                         }
 631
 632                         cur_frm_pos += 4;
 633                     }
 634
 635                     cur_frm_pos += (((width * 2) - blks_width) * 4);
 636                     flag1 = 0;
 637                 }
 638                 break;
 639
 640             case 10:                    /********** CASE 10 **********/
 641                 if(ref_vectors == NULL) {
 642                     flag1 = 1;
 643
 644                     for( ; blks_height > 0; blks_height -= 8) {
 645                         for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
 646                             for(lp2 = 0; lp2 < 4; ) {
 647                                 k = *buf1++;
 648                                 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
 649                                 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
 650                                 lv1 = ref_lp[0];
 651                                 lv2 = ref_lp[1];
 652                                 if(lp2 == 0 && flag1 != 0) {
 653 #ifdef WORDS_BIGENDIAN
 654                                     lv1 = lv1 & 0xFF00FF00;
 655                                     lv1 = (lv1 >> 8) | lv1;
 656                                     lv2 = lv2 & 0xFF00FF00;
 657                                     lv2 = (lv2 >> 8) | lv2;
 658 #else
 659                                     lv1 = lv1 & 0x00FF00FF;
 660                                     lv1 = (lv1 << 8) | lv1;
 661                                     lv2 = lv2 & 0x00FF00FF;
 662                                     lv2 = (lv2 << 8) | lv2;
 663 #endif
 664                                 }
 665
 666                                 switch(correction_type_sp[lp2 & 0x01][k]) {
 667                                 case 0:
 668                                     cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
 669                                     cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1);
 670                                     if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
 671                                         cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 672                                         cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
 673                                     } else {
 674                                         cur_lp[0] = cur_lp[width_tbl[1]];
 675                                         cur_lp[1] = cur_lp[width_tbl[1]+1];
 676                                     }
 677                                     lp2++;
 678                                     break;
 679
 680                                 case 1:
 681                                     cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1]) << 1);
 682                                     cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
 683                                     if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
 684                                         cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 685                                         cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
 686                                     } else {
 687                                         cur_lp[0] = cur_lp[width_tbl[1]];
 688                                         cur_lp[1] = cur_lp[width_tbl[1]+1];
 689                                     }
 690                                     buf1++;
 691                                     lp2++;
 692                                     break;
 693
 694                                 case 2:
 695                                     if(lp2 == 0) {
 696                                         if(flag1 != 0) {
 697                                             for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
 698                                                 cur_lp[j] = lv1;
 699                                                 cur_lp[j+1] = lv2;
 700                                             }
 701                                             cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 702                                             cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
 703                                         } else {
 704                                             for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
 705                                                 cur_lp[j] = lv1;
 706                                                 cur_lp[j+1] = lv2;
 707                                             }
 708                                         }
 709                                         lp2 += 2;
 710                                     }
 711                                     break;
 712
 713                                 case 3:
 714                                     if(lp2 < 2) {
 715                                         if(lp2 == 0 && flag1 != 0) {
 716                                             for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
 717                                                 cur_lp[j] = lv1;
 718                                                 cur_lp[j+1] = lv2;
 719                                             }
 720                                             cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 721                                             cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
 722                                         } else {
 723                                             for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
 724                                                 cur_lp[j] = lv1;
 725                                                 cur_lp[j+1] = lv2;
 726                                             }
 727                                         }
 728                                         lp2 = 3;
 729                                     }
 730                                     break;
 731
 732                                 case 8:
 733                                     if(lp2 == 0) {
 734                                         RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
 735                                         if(rle_v1 == 1) {
 736                                             if(flag1 != 0) {
 737                                                 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
 738                                                     cur_lp[j] = lv1;
 739                                                     cur_lp[j+1] = lv2;
 740                                                 }
 741                                                 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 742                                                 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
 743                                             } else {
 744                                                 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
 745                                                     cur_lp[j] = lv1;
 746                                                     cur_lp[j+1] = lv2;
 747                                                 }
 748                                             }
 749                                         }
 750                                         RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
 751                                         break;
 752                                     } else {
 753                                         rle_v1 = 1;
 754                                         rle_v2 = (*buf1) - 1;
 755                                     }
 756                                 case 5:
 757                                     LP2_CHECK(buf1,rle_v3,lp2)
 758                                 case 4:
 759                                     if(lp2 == 0 && flag1 != 0) {
 760                                         for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
 761                                             cur_lp[j] = lv1;
 762                                             cur_lp[j+1] = lv2;
 763                                         }
 764                                         cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 765                                         cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
 766                                     } else {
 767                                         for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
 768                                             cur_lp[j] = lv1;
 769                                             cur_lp[j+1] = lv2;
 770                                         }
 771                                     }
 772                                     lp2 = 4;
 773                                     break;
 774
 775                                 case 6:
 776                                     lp2 = 4;
 777                                     break;
 778
 779                                 case 7:
 780                                     if(lp2 == 0) {
 781                                         if(rle_v3 != 0)
 782                                             rle_v3 = 0;
 783                                         else {
 784                                             buf1--;
 785                                             rle_v3 = 1;
 786                                         }
 787                                         lp2 = 4;
 788                                     }
 789                                     break;
 790
 791                                 case 9:
 792                                     av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
 793                                     lv1 = *buf1;
 794                                     lv = (lv1 & 0x7F) << 1;
 795                                     lv += (lv << 8);
 796                                     lv += (lv << 16);
 797                                     for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
 798                                         cur_lp[j] = lv;
 799                                     LV1_CHECK(buf1,rle_v3,lv1,lp2)
 800                                     break;
 801
 802                                 default:
 803                                     return;
 804                                 }
 805                             }
 806
 807                             cur_frm_pos += 8;
 808                         }
 809
 810                         cur_frm_pos += (((width * 2) - blks_width) * 4);
 811                         flag1 = 0;
 812                     }
 813                 } else {
 814                     for( ; blks_height > 0; blks_height -= 8) {
 815                         for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
 816                             for(lp2 = 0; lp2 < 4; ) {
 817                                 k = *buf1++;
 818                                 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
 819                                 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
 820
 821                                 switch(correction_type_sp[lp2 & 0x01][k]) {
 822                                 case 0:
 823                                     lv1 = correctionloworder_lp[lp2 & 0x01][k];
 824                                     lv2 = correctionhighorder_lp[lp2 & 0x01][k];
 825                                     cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
 826                                     cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
 827                                     cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
 828                                     cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
 829                                     lp2++;
 830                                     break;
 831
 832                                 case 1:
 833                                     lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];
 834                                     lv2 = correctionloworder_lp[lp2 & 0x01][k];
 835                                     cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
 836                                     cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
 837                                     cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
 838                                     cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
 839                                     lp2++;
 840                                     break;
 841
 842                                 case 2:
 843                                     if(lp2 == 0) {
 844                                         for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
 845                                             cur_lp[j] = ref_lp[j];
 846                                             cur_lp[j+1] = ref_lp[j+1];
 847                                         }
 848                                         lp2 += 2;
 849                                     }
 850                                     break;
 851
 852                                 case 3:
 853                                     if(lp2 < 2) {
 854                                         for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
 855                                             cur_lp[j] = ref_lp[j];
 856                                             cur_lp[j+1] = ref_lp[j+1];
 857                                         }
 858                                         lp2 = 3;
 859                                     }
 860                                     break;
 861
 862                                 case 8:
 863                                     if(lp2 == 0) {
 864                                         RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
 865                                         for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
 866                                             ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
 867                                             ((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1];
 868                                         }
 869                                         RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
 870                                         break;
 871                                     } else {
 872                                         rle_v1 = 1;
 873                                         rle_v2 = (*buf1) - 1;
 874                                     }
 875                                 case 5:
 876                                 case 7:
 877                                     LP2_CHECK(buf1,rle_v3,lp2)
 878                                 case 6:
 879                                 case 4:
 880                                     for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
 881                                         cur_lp[j] = ref_lp[j];
 882                                         cur_lp[j+1] = ref_lp[j+1];
 883                                     }
 884                                     lp2 = 4;
 885                                     break;
 886
 887                                 case 9:
 888                                     av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
 889                                     lv1 = *buf1;
 890                                     lv = (lv1 & 0x7F) << 1;
 891                                     lv += (lv << 8);
 892                                     lv += (lv << 16);
 893                                     for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
 894                                         ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv;
 895                                     LV1_CHECK(buf1,rle_v3,lv1,lp2)
 896                                     break;
 897
 898                                 default:
 899                                     return;
 900                                 }
 901                             }
 902
 903                             cur_frm_pos += 8;
 904                             ref_frm_pos += 8;
 905                         }
 906
 907                         cur_frm_pos += (((width * 2) - blks_width) * 4);
 908                         ref_frm_pos += (((width * 2) - blks_width) * 4);
 909                     }
 910                 }
 911                 break;
 912
 913             case 11:                    /********** CASE 11 **********/
 914                 if(ref_vectors == NULL)
 915                     return;
 916
 917                 for( ; blks_height > 0; blks_height -= 8) {
 918                     for(lp1 = 0; lp1 < blks_width; lp1++) {
 919                         for(lp2 = 0; lp2 < 4; ) {
 920                             k = *buf1++;
 921                             cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
 922                             ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
 923
 924                             switch(correction_type_sp[lp2 & 0x01][k]) {
 925                             case 0:
 926                                 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
 927                                 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
 928                                 lp2++;
 929                                 break;
 930
 931                             case 1:
 932                                 lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);
 933                                 lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);
 934                                 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + lv1) << 1);
 935                                 ((unsigned short *)cur_lp)[0] = le2me_16(res);
 936                                 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + lv2) << 1);
 937                                 ((unsigned short *)cur_lp)[1] = le2me_16(res);
 938                                 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]]) >> 1) + lv1) << 1);
 939                                 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
 940                                 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]+1]) >> 1) + lv2) << 1);
 941                                 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
 942                                 lp2++;
 943                                 break;
 944
 945                             case 2:
 946                                 if(lp2 == 0) {
 947                                     for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 948                                         cur_lp[j] = ref_lp[j];
 949                                     lp2 += 2;
 950                                 }
 951                                 break;
 952
 953                             case 3:
 954                                 if(lp2 < 2) {
 955                                     for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
 956                                         cur_lp[j] = ref_lp[j];
 957                                     lp2 = 3;
 958                                 }
 959                                 break;
 960
 961                             case 8:
 962                                 if(lp2 == 0) {
 963                                     RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
 964
 965                                     for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
 966                                         cur_lp[j] = ref_lp[j];
 967
 968                                     RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
 969                                     break;
 970                                 } else {
 971                                     rle_v1 = 1;
 972                                     rle_v2 = (*buf1) - 1;
 973                                 }
 974                             case 5:
 975                             case 7:
 976                                 LP2_CHECK(buf1,rle_v3,lp2)
 977                             case 4:
 978                             case 6:
 979                                 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
 980                                     cur_lp[j] = ref_lp[j];
 981                                 lp2 = 4;
 982                                 break;
 983
 984                             case 9:
 985                                 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
 986                                 lv1 = *buf1++;
 987                                 lv = (lv1 & 0x7F) << 1;
 988                                 lv += (lv << 8);
 989                                 lv += (lv << 16);
 990                                 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 991                                     cur_lp[j] = lv;
 992                                 LV1_CHECK(buf1,rle_v3,lv1,lp2)
 993                                 break;
 994
 995                             default:
 996                                 return;
 997                             }
 998                         }
 999
1000                         cur_frm_pos += 4;
1001                         ref_frm_pos += 4;
1002                     }
1003
1004                     cur_frm_pos += (((width * 2) - blks_width) * 4);
1005                     ref_frm_pos += (((width * 2) - blks_width) * 4);
1006                 }
1007                 break;
1008
1009             default:
1010                 return;
1011             }
1012         }
1013
1014         if(strip < strip_tbl)
1015             return;
1016
1017         for( ; strip >= strip_tbl; strip--) {
1018             if(strip->split_flag != 0) {
1019                 strip->split_flag = 0;
1020                 strip->usl7 = (strip-1)->usl7;
1021
1022                 if(strip->split_direction) {
1023                     strip->xpos += strip->width;
1024                     strip->width = (strip-1)->width - strip->width;
1025                     if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)
1026                         strip->width = width - strip->xpos;
1027                 } else {
1028                     strip->ypos += strip->height;
1029                     strip->height = (strip-1)->height - strip->height;
1030                 }
1031                 break;
1032             }
1033         }
1034     }
1035 }
1036
1037 static av_cold int indeo3_decode_init(AVCodecContext *avctx)
1038 {
1039     Indeo3DecodeContext *s = avctx->priv_data;
1040     int ret = 0;
1041
1042     s->avctx = avctx;
1043     s->width = avctx->width;
1044     s->height = avctx->height;
1045     avctx->pix_fmt = PIX_FMT_YUV410P;
1046
1047     if (!(ret = build_modpred(s)))
1048         ret = iv_alloc_frames(s);
1049     if (ret)
1050         iv_free_func(s);
1051
1052     return ret;
1053 }
1054
1055 static int indeo3_decode_frame(AVCodecContext *avctx,
1056                                void *data, int *data_size,
1057                                const uint8_t *buf, int buf_size)
1058 {
1059     Indeo3DecodeContext *s=avctx->priv_data;
1060     uint8_t *src, *dest;
1061     int y;
1062
1063     iv_decode_frame(s, buf, buf_size);
1064
1065     if(s->frame.data[0])
1066         avctx->release_buffer(avctx, &s->frame);
1067
1068     s->frame.reference = 0;
1069     if(avctx->get_buffer(avctx, &s->frame) < 0) {
1070         av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1071         return -1;
1072     }
1073
1074     src = s->cur_frame->Ybuf;
1075     dest = s->frame.data[0];
1076     for (y = 0; y < s->height; y++) {
1077         memcpy(dest, src, s->cur_frame->y_w);
1078         src += s->cur_frame->y_w;
1079         dest += s->frame.linesize[0];
1080     }
1081
1082     if (!(s->avctx->flags & CODEC_FLAG_GRAY))
1083     {
1084         src = s->cur_frame->Ubuf;
1085         dest = s->frame.data[1];
1086         for (y = 0; y < s->height / 4; y++) {
1087             memcpy(dest, src, s->cur_frame->uv_w);
1088             src += s->cur_frame->uv_w;
1089             dest += s->frame.linesize[1];
1090         }
1091
1092         src = s->cur_frame->Vbuf;
1093         dest = s->frame.data[2];
1094         for (y = 0; y < s->height / 4; y++) {
1095             memcpy(dest, src, s->cur_frame->uv_w);
1096             src += s->cur_frame->uv_w;
1097             dest += s->frame.linesize[2];
1098         }
1099     }
1100
1101     *data_size=sizeof(AVFrame);
1102     *(AVFrame*)data= s->frame;
1103
1104     return buf_size;
1105 }
1106
1107 static av_cold int indeo3_decode_end(AVCodecContext *avctx)
1108 {
1109     Indeo3DecodeContext *s = avctx->priv_data;
1110
1111     iv_free_func(s);
1112
1113     return 0;
1114 }
1115
1116 AVCodec indeo3_decoder = {
1117     "indeo3",
1118     CODEC_TYPE_VIDEO,
1119     CODEC_ID_INDEO3,
1120     sizeof(Indeo3DecodeContext),
1121     indeo3_decode_init,
1122     NULL,
1123     indeo3_decode_end,
1124     indeo3_decode_frame,
1125     0,
1126     NULL,
1127     .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo 3"),
1128 };