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 short y_w, y_h;
  39     unsigned short uv_w, uv_h;
  40 } YUVBufs;
  41
  42 typedef struct Indeo3DecodeContext {
  43     AVCodecContext *avctx;
  44     int width, height;
  45     AVFrame frame;
  46
  47     uint8_t *buf;
  48     YUVBufs iv_frame[2];
  49     YUVBufs *cur_frame;
  50     YUVBufs *ref_frame;
  51
  52     uint8_t *ModPred;
  53     uint8_t *corrector_type;
  54 } Indeo3DecodeContext;
  55
  56 static const uint8_t corrector_type_0[24] = {
  57     195, 159, 133, 115, 101,  93,  87,  77,
  58     195, 159, 133, 115, 101,  93,  87,  77,
  59     128,  79,  79,  79,  79,  79,  79,  79
  60 };
  61
  62 static const uint8_t corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 };
  63
  64 static av_cold int build_modpred(Indeo3DecodeContext *s)
  65 {
  66     int i, j;
  67
  68     if (!(s->ModPred = av_malloc(8 * 128)))
  69         return AVERROR(ENOMEM);
  70
  71     for (i=0; i < 128; ++i) {
  72         s->ModPred[i+0*128] = i >  126 ? 254 : 2*(i + 1 - ((i + 1) % 2));
  73         s->ModPred[i+1*128] = i ==   7 ?  20 :
  74                               i == 119 ||
  75                               i == 120 ? 236 : 2*(i + 2 - ((i + 1) % 3));
  76         s->ModPred[i+2*128] = i >  125 ? 248 : 2*(i + 2 - ((i + 2) % 4));
  77         s->ModPred[i+3*128] =                  2*(i + 1 - ((i - 3) % 5));
  78         s->ModPred[i+4*128] = i ==   8 ?  20 : 2*(i + 1 - ((i - 3) % 6));
  79         s->ModPred[i+5*128] =                  2*(i + 4 - ((i + 3) % 7));
  80         s->ModPred[i+6*128] = i >  123 ? 240 : 2*(i + 4 - ((i + 4) % 8));
  81         s->ModPred[i+7*128] =                  2*(i + 5 - ((i + 4) % 9));
  82     }
  83
  84     if (!(s->corrector_type = av_malloc(24 * 256)))
  85         return AVERROR(ENOMEM);
  86
  87     for (i=0; i < 24; ++i) {
  88         for (j=0; j < 256; ++j) {
  89             s->corrector_type[i*256+j] = j < corrector_type_0[i]          ? 1 :
  90                                          j < 248 || (i == 16 && j == 248) ? 0 :
  91                                          corrector_type_2[j - 248];
  92         }
  93     }
  94
  95   return 0;
  96 }
  97
  98 static av_cold int iv_alloc_frames(Indeo3DecodeContext *s)
  99 {
 100     int luma_width    = (s->width           + 3) & ~3,
 101         luma_height   = (s->height          + 3) & ~3,
 102         chroma_width  = ((luma_width  >> 2) + 3) & ~3,
 103         chroma_height = ((luma_height >> 2) + 3) & ~3,
 104         luma_pixels   = luma_width   * luma_height,
 105         chroma_pixels = chroma_width * chroma_height,
 106         i;
 107     unsigned int bufsize = luma_pixels * 2 + luma_width * 3 +
 108                           (chroma_pixels   + chroma_width) * 4;
 109
 110     if(!(s->buf = av_malloc(bufsize)))
 111         return AVERROR(ENOMEM);
 112     s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width;
 113     s->iv_frame[0].y_h = s->iv_frame[1].y_h = luma_height;
 114     s->iv_frame[0].uv_w = s->iv_frame[1].uv_w = chroma_width;
 115     s->iv_frame[0].uv_h = s->iv_frame[1].uv_h = chroma_height;
 116
 117     s->iv_frame[0].Ybuf = s->buf + luma_width;
 118     i = luma_pixels + luma_width * 2;
 119     s->iv_frame[1].Ybuf = s->buf + i;
 120     i += (luma_pixels + luma_width);
 121     s->iv_frame[0].Ubuf = s->buf + i;
 122     i += (chroma_pixels + chroma_width);
 123     s->iv_frame[1].Ubuf = s->buf + i;
 124     i += (chroma_pixels + chroma_width);
 125     s->iv_frame[0].Vbuf = s->buf + i;
 126     i += (chroma_pixels + chroma_width);
 127     s->iv_frame[1].Vbuf = s->buf + i;
 128
 129     for(i = 1; i <= luma_width; i++)
 130         s->iv_frame[0].Ybuf[-i] = s->iv_frame[1].Ybuf[-i] =
 131             s->iv_frame[0].Ubuf[-i] = 0x80;
 132
 133     for(i = 1; i <= chroma_width; i++) {
 134         s->iv_frame[1].Ubuf[-i] = 0x80;
 135         s->iv_frame[0].Vbuf[-i] = 0x80;
 136         s->iv_frame[1].Vbuf[-i] = 0x80;
 137         s->iv_frame[1].Vbuf[chroma_pixels+i-1] = 0x80;
 138     }
 139
 140     return 0;
 141 }
 142
 143 static av_cold void iv_free_func(Indeo3DecodeContext *s)
 144 {
 145     av_free(s->buf);
 146     av_free(s->ModPred);
 147     av_free(s->corrector_type);
 148 }
 149
 150 struct ustr {
 151     long xpos;
 152     long ypos;
 153     long width;
 154     long height;
 155     long split_flag;
 156     long split_direction;
 157     long usl7;
 158 };
 159
 160
 161 #define LV1_CHECK(buf1,rle_v3,lv1,lp2)  \
 162     if((lv1 & 0x80) != 0) {             \
 163         if(rle_v3 != 0)                 \
 164             rle_v3 = 0;                 \
 165         else {                          \
 166             rle_v3 = 1;                 \
 167             buf1 -= 2;                  \
 168         }                               \
 169     }                                   \
 170     lp2 = 4;
 171
 172
 173 #define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)  \
 174     if(rle_v3 == 0) {                            \
 175         rle_v2 = *buf1;                          \
 176         rle_v1 = 1;                              \
 177         if(rle_v2 > 32) {                        \
 178             rle_v2 -= 32;                        \
 179             rle_v1 = 0;                          \
 180         }                                        \
 181         rle_v3 = 1;                              \
 182     }                                            \
 183     buf1--;
 184
 185
 186 #define LP2_CHECK(buf1,rle_v3,lp2)  \
 187     if(lp2 == 0 && rle_v3 != 0)     \
 188         rle_v3 = 0;                 \
 189     else {                          \
 190         buf1--;                     \
 191         rle_v3 = 1;                 \
 192     }
 193
 194
 195 #define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
 196     rle_v2--;                                 \
 197     if(rle_v2 == 0) {                         \
 198         rle_v3 = 0;                           \
 199         buf1 += 2;                            \
 200     }                                         \
 201     lp2 = 4;
 202
 203 static void iv_Decode_Chunk(Indeo3DecodeContext *s,
 204         uint8_t *cur, uint8_t *ref, int width, int height,
 205         const uint8_t *buf1, long cb_offset, const uint8_t *hdr,
 206         const uint8_t *buf2, int min_width_160)
 207 {
 208     uint8_t bit_buf;
 209     unsigned long bit_pos, lv, lv1, lv2;
 210     long *width_tbl, width_tbl_arr[10];
 211     const signed char *ref_vectors;
 212     uint8_t *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
 213     uint32_t *cur_lp, *ref_lp;
 214     const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
 215     uint8_t *correction_type_sp[2];
 216     struct ustr strip_tbl[20], *strip;
 217     int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
 218         rle_v1, rle_v2, rle_v3;
 219     unsigned short res;
 220
 221     bit_buf = 0;
 222     ref_vectors = NULL;
 223
 224     width_tbl = width_tbl_arr + 1;
 225     i = (width < 0 ? width + 3 : width)/4;
 226     for(j = -1; j < 8; j++)
 227         width_tbl[j] = i * j;
 228
 229     strip = strip_tbl;
 230
 231     for(region_160_width = 0; region_160_width < (width - min_width_160); region_160_width += min_width_160);
 232
 233     strip->ypos = strip->xpos = 0;
 234     for(strip->width = min_width_160; width > strip->width; strip->width *= 2);
 235     strip->height = height;
 236     strip->split_direction = 0;
 237     strip->split_flag = 0;
 238     strip->usl7 = 0;
 239
 240     bit_pos = 0;
 241
 242     rle_v1 = rle_v2 = rle_v3 = 0;
 243
 244     while(strip >= strip_tbl) {
 245         if(bit_pos <= 0) {
 246             bit_pos = 8;
 247             bit_buf = *buf1++;
 248         }
 249
 250         bit_pos -= 2;
 251         cmd = (bit_buf >> bit_pos) & 0x03;
 252
 253         if(cmd == 0) {
 254             strip++;
 255             if(strip >= strip_tbl + FF_ARRAY_ELEMS(strip_tbl)) {
 256                 av_log(s->avctx, AV_LOG_WARNING, "out of range strip\n");
 257                 break;
 258             }
 259             memcpy(strip, strip-1, sizeof(*strip));
 260             strip->split_flag = 1;
 261             strip->split_direction = 0;
 262             strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4);
 263             continue;
 264         } else if(cmd == 1) {
 265             strip++;
 266             if(strip >= strip_tbl + FF_ARRAY_ELEMS(strip_tbl)) {
 267                 av_log(s->avctx, AV_LOG_WARNING, "out of range strip\n");
 268                 break;
 269             }
 270             memcpy(strip, strip-1, sizeof(*strip));
 271             strip->split_flag = 1;
 272             strip->split_direction = 1;
 273             strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4);
 274             continue;
 275         } else if(cmd == 2) {
 276             if(strip->usl7 == 0) {
 277                 strip->usl7 = 1;
 278                 ref_vectors = NULL;
 279                 continue;
 280             }
 281         } else if(cmd == 3) {
 282             if(strip->usl7 == 0) {
 283                 strip->usl7 = 1;
 284                 ref_vectors = (const signed char*)buf2 + (*buf1 * 2);
 285                 buf1++;
 286                 continue;
 287             }
 288         }
 289
 290         cur_frm_pos = cur + width * strip->ypos + strip->xpos;
 291
 292         if((blks_width = strip->width) < 0)
 293             blks_width += 3;
 294         blks_width >>= 2;
 295         blks_height = strip->height;
 296
 297         if(ref_vectors != NULL) {
 298             ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +
 299                 ref_vectors[1] + strip->xpos;
 300         } else
 301             ref_frm_pos = cur_frm_pos - width_tbl[4];
 302
 303         if(cmd == 2) {
 304             if(bit_pos <= 0) {
 305                 bit_pos = 8;
 306                 bit_buf = *buf1++;
 307             }
 308
 309             bit_pos -= 2;
 310             cmd = (bit_buf >> bit_pos) & 0x03;
 311
 312             if(cmd == 0 || ref_vectors != NULL) {
 313                 for(lp1 = 0; lp1 < blks_width; lp1++) {
 314                     for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])
 315                         ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
 316                     cur_frm_pos += 4;
 317                     ref_frm_pos += 4;
 318                 }
 319             } else if(cmd != 1)
 320                 return;
 321         } else {
 322             k = *buf1 >> 4;
 323             j = *buf1 & 0x0f;
 324             buf1++;
 325             lv = j + cb_offset;
 326
 327             if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {
 328                 cp2 = s->ModPred + ((lv - 8) << 7);
 329                 cp = ref_frm_pos;
 330                 for(i = 0; i < blks_width << 2; i++) {
 331                     int v = *cp >> 1;
 332                     *(cp++) = cp2[v];
 333                 }
 334             }
 335
 336             if(k == 1 || k == 4) {
 337                 lv = (hdr[j] & 0xf) + cb_offset;
 338                 correction_type_sp[0] = s->corrector_type + (lv << 8);
 339                 correction_lp[0] = correction + (lv << 8);
 340                 lv = (hdr[j] >> 4) + cb_offset;
 341                 correction_lp[1] = correction + (lv << 8);
 342                 correction_type_sp[1] = s->corrector_type + (lv << 8);
 343             } else {
 344                 correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
 345                 correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
 346                 correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
 347                 correction_lp[0] = correction_lp[1] = correction + (lv << 8);
 348             }
 349
 350             switch(k) {
 351             case 1:
 352             case 0:                    /********** CASE 0 **********/
 353                 for( ; blks_height > 0; blks_height -= 4) {
 354                     for(lp1 = 0; lp1 < blks_width; lp1++) {
 355                         for(lp2 = 0; lp2 < 4; ) {
 356                             k = *buf1++;
 357                             cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];
 358                             ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];
 359
 360                             switch(correction_type_sp[0][k]) {
 361                             case 0:
 362                                 *cur_lp = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
 363                                 lp2++;
 364                                 break;
 365                             case 1:
 366                                 res = ((le2me_16(((unsigned short *)(ref_lp))[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
 367                                 ((unsigned short *)cur_lp)[0] = le2me_16(res);
 368                                 res = ((le2me_16(((unsigned short *)(ref_lp))[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
 369                                 ((unsigned short *)cur_lp)[1] = le2me_16(res);
 370                                 buf1++;
 371                                 lp2++;
 372                                 break;
 373                             case 2:
 374                                 if(lp2 == 0) {
 375                                     for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
 376                                         cur_lp[j] = ref_lp[j];
 377                                     lp2 += 2;
 378                                 }
 379                                 break;
 380                             case 3:
 381                                 if(lp2 < 2) {
 382                                     for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
 383                                         cur_lp[j] = ref_lp[j];
 384                                     lp2 = 3;
 385                                 }
 386                                 break;
 387                             case 8:
 388                                 if(lp2 == 0) {
 389                                     RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
 390
 391                                     if(rle_v1 == 1 || ref_vectors != NULL) {
 392                                         for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 393                                             cur_lp[j] = ref_lp[j];
 394                                     }
 395
 396                                     RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
 397                                     break;
 398                                 } else {
 399                                     rle_v1 = 1;
 400                                     rle_v2 = *buf1 - 1;
 401                                 }
 402                             case 5:
 403                                 LP2_CHECK(buf1,rle_v3,lp2)
 404                             case 4:
 405                                 for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
 406                                     cur_lp[j] = ref_lp[j];
 407                                 lp2 = 4;
 408                                 break;
 409
 410                             case 7:
 411                                 if(rle_v3 != 0)
 412                                     rle_v3 = 0;
 413                                 else {
 414                                     buf1--;
 415                                     rle_v3 = 1;
 416                                 }
 417                             case 6:
 418                                 if(ref_vectors != NULL) {
 419                                     for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 420                                         cur_lp[j] = ref_lp[j];
 421                                 }
 422                                 lp2 = 4;
 423                                 break;
 424
 425                             case 9:
 426                                 lv1 = *buf1++;
 427                                 lv = (lv1 & 0x7F) << 1;
 428                                 lv += (lv << 8);
 429                                 lv += (lv << 16);
 430                                 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 431                                     cur_lp[j] = lv;
 432
 433                                 LV1_CHECK(buf1,rle_v3,lv1,lp2)
 434                                 break;
 435                             default:
 436                                 return;
 437                             }
 438                         }
 439
 440                         cur_frm_pos += 4;
 441                         ref_frm_pos += 4;
 442                     }
 443
 444                     cur_frm_pos += ((width - blks_width) * 4);
 445                     ref_frm_pos += ((width - blks_width) * 4);
 446                 }
 447                 break;
 448
 449             case 4:
 450             case 3:                    /********** CASE 3 **********/
 451                 if(ref_vectors != NULL)
 452                     return;
 453                 flag1 = 1;
 454
 455                 for( ; blks_height > 0; blks_height -= 8) {
 456                     for(lp1 = 0; lp1 < blks_width; lp1++) {
 457                         for(lp2 = 0; lp2 < 4; ) {
 458                             k = *buf1++;
 459
 460                             cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
 461                             ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
 462
 463                             switch(correction_type_sp[lp2 & 0x01][k]) {
 464                             case 0:
 465                                 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
 466                                 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
 467                                     cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 468                                 else
 469                                     cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
 470                                 lp2++;
 471                                 break;
 472
 473                             case 1:
 474                                 res = ((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
 475                                 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
 476                                 res = ((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
 477                                 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
 478
 479                                 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
 480                                     cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 481                                 else
 482                                     cur_lp[0] = cur_lp[width_tbl[1]];
 483                                 buf1++;
 484                                 lp2++;
 485                                 break;
 486
 487                             case 2:
 488                                 if(lp2 == 0) {
 489                                     for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 490                                         cur_lp[j] = *ref_lp;
 491                                     lp2 += 2;
 492                                 }
 493                                 break;
 494
 495                             case 3:
 496                                 if(lp2 < 2) {
 497                                     for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
 498                                         cur_lp[j] = *ref_lp;
 499                                     lp2 = 3;
 500                                 }
 501                                 break;
 502
 503                             case 6:
 504                                 lp2 = 4;
 505                                 break;
 506
 507                             case 7:
 508                                 if(rle_v3 != 0)
 509                                     rle_v3 = 0;
 510                                 else {
 511                                     buf1--;
 512                                     rle_v3 = 1;
 513                                 }
 514                                 lp2 = 4;
 515                                 break;
 516
 517                             case 8:
 518                                 if(lp2 == 0) {
 519                                     RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
 520
 521                                     if(rle_v1 == 1) {
 522                                         for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
 523                                             cur_lp[j] = ref_lp[j];
 524                                     }
 525
 526                                     RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
 527                                     break;
 528                                 } else {
 529                                     rle_v2 = (*buf1) - 1;
 530                                     rle_v1 = 1;
 531                                 }
 532                             case 5:
 533                                 LP2_CHECK(buf1,rle_v3,lp2)
 534                             case 4:
 535                                 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
 536                                     cur_lp[j] = *ref_lp;
 537                                 lp2 = 4;
 538                                 break;
 539
 540                             case 9:
 541                                 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
 542                                 lv1 = *buf1++;
 543                                 lv = (lv1 & 0x7F) << 1;
 544                                 lv += (lv << 8);
 545                                 lv += (lv << 16);
 546
 547                                 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 548                                     cur_lp[j] = lv;
 549
 550                                 LV1_CHECK(buf1,rle_v3,lv1,lp2)
 551                                 break;
 552
 553                             default:
 554                                 return;
 555                             }
 556                         }
 557
 558                         cur_frm_pos += 4;
 559                     }
 560
 561                     cur_frm_pos += (((width * 2) - blks_width) * 4);
 562                     flag1 = 0;
 563                 }
 564                 break;
 565
 566             case 10:                    /********** CASE 10 **********/
 567                 if(ref_vectors == NULL) {
 568                     flag1 = 1;
 569
 570                     for( ; blks_height > 0; blks_height -= 8) {
 571                         for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
 572                             for(lp2 = 0; lp2 < 4; ) {
 573                                 k = *buf1++;
 574                                 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
 575                                 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
 576                                 lv1 = ref_lp[0];
 577                                 lv2 = ref_lp[1];
 578                                 if(lp2 == 0 && flag1 != 0) {
 579 #ifdef WORDS_BIGENDIAN
 580                                     lv1 = lv1 & 0xFF00FF00;
 581                                     lv1 = (lv1 >> 8) | lv1;
 582                                     lv2 = lv2 & 0xFF00FF00;
 583                                     lv2 = (lv2 >> 8) | lv2;
 584 #else
 585                                     lv1 = lv1 & 0x00FF00FF;
 586                                     lv1 = (lv1 << 8) | lv1;
 587                                     lv2 = lv2 & 0x00FF00FF;
 588                                     lv2 = (lv2 << 8) | lv2;
 589 #endif
 590                                 }
 591
 592                                 switch(correction_type_sp[lp2 & 0x01][k]) {
 593                                 case 0:
 594                                     cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
 595                                     cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1);
 596                                     if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
 597                                         cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 598                                         cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
 599                                     } else {
 600                                         cur_lp[0] = cur_lp[width_tbl[1]];
 601                                         cur_lp[1] = cur_lp[width_tbl[1]+1];
 602                                     }
 603                                     lp2++;
 604                                     break;
 605
 606                                 case 1:
 607                                     cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1]) << 1);
 608                                     cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
 609                                     if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
 610                                         cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 611                                         cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
 612                                     } else {
 613                                         cur_lp[0] = cur_lp[width_tbl[1]];
 614                                         cur_lp[1] = cur_lp[width_tbl[1]+1];
 615                                     }
 616                                     buf1++;
 617                                     lp2++;
 618                                     break;
 619
 620                                 case 2:
 621                                     if(lp2 == 0) {
 622                                         if(flag1 != 0) {
 623                                             for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
 624                                                 cur_lp[j] = lv1;
 625                                                 cur_lp[j+1] = lv2;
 626                                             }
 627                                             cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 628                                             cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
 629                                         } else {
 630                                             for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
 631                                                 cur_lp[j] = lv1;
 632                                                 cur_lp[j+1] = lv2;
 633                                             }
 634                                         }
 635                                         lp2 += 2;
 636                                     }
 637                                     break;
 638
 639                                 case 3:
 640                                     if(lp2 < 2) {
 641                                         if(lp2 == 0 && flag1 != 0) {
 642                                             for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
 643                                                 cur_lp[j] = lv1;
 644                                                 cur_lp[j+1] = lv2;
 645                                             }
 646                                             cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 647                                             cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
 648                                         } else {
 649                                             for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
 650                                                 cur_lp[j] = lv1;
 651                                                 cur_lp[j+1] = lv2;
 652                                             }
 653                                         }
 654                                         lp2 = 3;
 655                                     }
 656                                     break;
 657
 658                                 case 8:
 659                                     if(lp2 == 0) {
 660                                         RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
 661                                         if(rle_v1 == 1) {
 662                                             if(flag1 != 0) {
 663                                                 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
 664                                                     cur_lp[j] = lv1;
 665                                                     cur_lp[j+1] = lv2;
 666                                                 }
 667                                                 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 668                                                 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
 669                                             } else {
 670                                                 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
 671                                                     cur_lp[j] = lv1;
 672                                                     cur_lp[j+1] = lv2;
 673                                                 }
 674                                             }
 675                                         }
 676                                         RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
 677                                         break;
 678                                     } else {
 679                                         rle_v1 = 1;
 680                                         rle_v2 = (*buf1) - 1;
 681                                     }
 682                                 case 5:
 683                                     LP2_CHECK(buf1,rle_v3,lp2)
 684                                 case 4:
 685                                     if(lp2 == 0 && flag1 != 0) {
 686                                         for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
 687                                             cur_lp[j] = lv1;
 688                                             cur_lp[j+1] = lv2;
 689                                         }
 690                                         cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
 691                                         cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
 692                                     } else {
 693                                         for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
 694                                             cur_lp[j] = lv1;
 695                                             cur_lp[j+1] = lv2;
 696                                         }
 697                                     }
 698                                     lp2 = 4;
 699                                     break;
 700
 701                                 case 6:
 702                                     lp2 = 4;
 703                                     break;
 704
 705                                 case 7:
 706                                     if(lp2 == 0) {
 707                                         if(rle_v3 != 0)
 708                                             rle_v3 = 0;
 709                                         else {
 710                                             buf1--;
 711                                             rle_v3 = 1;
 712                                         }
 713                                         lp2 = 4;
 714                                     }
 715                                     break;
 716
 717                                 case 9:
 718                                     av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
 719                                     lv1 = *buf1;
 720                                     lv = (lv1 & 0x7F) << 1;
 721                                     lv += (lv << 8);
 722                                     lv += (lv << 16);
 723                                     for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
 724                                         cur_lp[j] = lv;
 725                                     LV1_CHECK(buf1,rle_v3,lv1,lp2)
 726                                     break;
 727
 728                                 default:
 729                                     return;
 730                                 }
 731                             }
 732
 733                             cur_frm_pos += 8;
 734                         }
 735
 736                         cur_frm_pos += (((width * 2) - blks_width) * 4);
 737                         flag1 = 0;
 738                     }
 739                 } else {
 740                     for( ; blks_height > 0; blks_height -= 8) {
 741                         for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
 742                             for(lp2 = 0; lp2 < 4; ) {
 743                                 k = *buf1++;
 744                                 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
 745                                 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
 746
 747                                 switch(correction_type_sp[lp2 & 0x01][k]) {
 748                                 case 0:
 749                                     lv1 = correctionloworder_lp[lp2 & 0x01][k];
 750                                     lv2 = correctionhighorder_lp[lp2 & 0x01][k];
 751                                     cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
 752                                     cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
 753                                     cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
 754                                     cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
 755                                     lp2++;
 756                                     break;
 757
 758                                 case 1:
 759                                     lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];
 760                                     lv2 = correctionloworder_lp[lp2 & 0x01][k];
 761                                     cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
 762                                     cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
 763                                     cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
 764                                     cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
 765                                     lp2++;
 766                                     break;
 767
 768                                 case 2:
 769                                     if(lp2 == 0) {
 770                                         for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
 771                                             cur_lp[j] = ref_lp[j];
 772                                             cur_lp[j+1] = ref_lp[j+1];
 773                                         }
 774                                         lp2 += 2;
 775                                     }
 776                                     break;
 777
 778                                 case 3:
 779                                     if(lp2 < 2) {
 780                                         for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
 781                                             cur_lp[j] = ref_lp[j];
 782                                             cur_lp[j+1] = ref_lp[j+1];
 783                                         }
 784                                         lp2 = 3;
 785                                     }
 786                                     break;
 787
 788                                 case 8:
 789                                     if(lp2 == 0) {
 790                                         RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
 791                                         for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
 792                                             ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
 793                                             ((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1];
 794                                         }
 795                                         RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
 796                                         break;
 797                                     } else {
 798                                         rle_v1 = 1;
 799                                         rle_v2 = (*buf1) - 1;
 800                                     }
 801                                 case 5:
 802                                 case 7:
 803                                     LP2_CHECK(buf1,rle_v3,lp2)
 804                                 case 6:
 805                                 case 4:
 806                                     for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
 807                                         cur_lp[j] = ref_lp[j];
 808                                         cur_lp[j+1] = ref_lp[j+1];
 809                                     }
 810                                     lp2 = 4;
 811                                     break;
 812
 813                                 case 9:
 814                                     av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
 815                                     lv1 = *buf1;
 816                                     lv = (lv1 & 0x7F) << 1;
 817                                     lv += (lv << 8);
 818                                     lv += (lv << 16);
 819                                     for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
 820                                         ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv;
 821                                     LV1_CHECK(buf1,rle_v3,lv1,lp2)
 822                                     break;
 823
 824                                 default:
 825                                     return;
 826                                 }
 827                             }
 828
 829                             cur_frm_pos += 8;
 830                             ref_frm_pos += 8;
 831                         }
 832
 833                         cur_frm_pos += (((width * 2) - blks_width) * 4);
 834                         ref_frm_pos += (((width * 2) - blks_width) * 4);
 835                     }
 836                 }
 837                 break;
 838
 839             case 11:                    /********** CASE 11 **********/
 840                 if(ref_vectors == NULL)
 841                     return;
 842
 843                 for( ; blks_height > 0; blks_height -= 8) {
 844                     for(lp1 = 0; lp1 < blks_width; lp1++) {
 845                         for(lp2 = 0; lp2 < 4; ) {
 846                             k = *buf1++;
 847                             cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
 848                             ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
 849
 850                             switch(correction_type_sp[lp2 & 0x01][k]) {
 851                             case 0:
 852                                 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
 853                                 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
 854                                 lp2++;
 855                                 break;
 856
 857                             case 1:
 858                                 lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);
 859                                 lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);
 860                                 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + lv1) << 1);
 861                                 ((unsigned short *)cur_lp)[0] = le2me_16(res);
 862                                 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + lv2) << 1);
 863                                 ((unsigned short *)cur_lp)[1] = le2me_16(res);
 864                                 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]]) >> 1) + lv1) << 1);
 865                                 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
 866                                 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]+1]) >> 1) + lv2) << 1);
 867                                 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
 868                                 lp2++;
 869                                 break;
 870
 871                             case 2:
 872                                 if(lp2 == 0) {
 873                                     for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 874                                         cur_lp[j] = ref_lp[j];
 875                                     lp2 += 2;
 876                                 }
 877                                 break;
 878
 879                             case 3:
 880                                 if(lp2 < 2) {
 881                                     for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
 882                                         cur_lp[j] = ref_lp[j];
 883                                     lp2 = 3;
 884                                 }
 885                                 break;
 886
 887                             case 8:
 888                                 if(lp2 == 0) {
 889                                     RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
 890
 891                                     for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
 892                                         cur_lp[j] = ref_lp[j];
 893
 894                                     RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
 895                                     break;
 896                                 } else {
 897                                     rle_v1 = 1;
 898                                     rle_v2 = (*buf1) - 1;
 899                                 }
 900                             case 5:
 901                             case 7:
 902                                 LP2_CHECK(buf1,rle_v3,lp2)
 903                             case 4:
 904                             case 6:
 905                                 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
 906                                     cur_lp[j] = ref_lp[j];
 907                                 lp2 = 4;
 908                                 break;
 909
 910                             case 9:
 911                                 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
 912                                 lv1 = *buf1++;
 913                                 lv = (lv1 & 0x7F) << 1;
 914                                 lv += (lv << 8);
 915                                 lv += (lv << 16);
 916                                 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
 917                                     cur_lp[j] = lv;
 918                                 LV1_CHECK(buf1,rle_v3,lv1,lp2)
 919                                 break;
 920
 921                             default:
 922                                 return;
 923                             }
 924                         }
 925
 926                         cur_frm_pos += 4;
 927                         ref_frm_pos += 4;
 928                     }
 929
 930                     cur_frm_pos += (((width * 2) - blks_width) * 4);
 931                     ref_frm_pos += (((width * 2) - blks_width) * 4);
 932                 }
 933                 break;
 934
 935             default:
 936                 return;
 937             }
 938         }
 939
 940         for( ; strip >= strip_tbl; strip--) {
 941             if(strip->split_flag != 0) {
 942                 strip->split_flag = 0;
 943                 strip->usl7 = (strip-1)->usl7;
 944
 945                 if(strip->split_direction) {
 946                     strip->xpos += strip->width;
 947                     strip->width = (strip-1)->width - strip->width;
 948                     if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)
 949                         strip->width = width - strip->xpos;
 950                 } else {
 951                     strip->ypos += strip->height;
 952                     strip->height = (strip-1)->height - strip->height;
 953                 }
 954                 break;
 955             }
 956         }
 957     }
 958 }
 959
 960 static av_cold int indeo3_decode_init(AVCodecContext *avctx)
 961 {
 962     Indeo3DecodeContext *s = avctx->priv_data;
 963     int ret = 0;
 964
 965     s->avctx = avctx;
 966     s->width = avctx->width;
 967     s->height = avctx->height;
 968     avctx->pix_fmt = PIX_FMT_YUV410P;
 969
 970     if (!(ret = build_modpred(s)))
 971         ret = iv_alloc_frames(s);
 972     if (ret)
 973         iv_free_func(s);
 974
 975     return ret;
 976 }
 977
 978 static int iv_decode_frame(Indeo3DecodeContext *s,
 979                            const uint8_t *buf, int buf_size)
 980 {
 981     unsigned int image_width, image_height,
 982                  chroma_width, chroma_height;
 983     unsigned long flags, cb_offset, data_size,
 984                   y_offset, v_offset, u_offset, mc_vector_count;
 985     const uint8_t *hdr_pos, *buf_pos;
 986
 987     buf_pos = buf;
 988     buf_pos += 18; /* skip OS header (16 bytes) and version number */
 989
 990     flags = bytestream_get_le16(&buf_pos);
 991     data_size = bytestream_get_le32(&buf_pos);
 992     cb_offset = *buf_pos++;
 993     buf_pos += 3; /* skip reserved byte and checksum */
 994     image_height = bytestream_get_le16(&buf_pos);
 995     image_width  = bytestream_get_le16(&buf_pos);
 996
 997     if(avcodec_check_dimensions(NULL, image_width, image_height))
 998         return -1;
 999
1000     chroma_height = ((image_height >> 2) + 3) & 0x7ffc;
1001     chroma_width = ((image_width >> 2) + 3) & 0x7ffc;
1002     y_offset = bytestream_get_le32(&buf_pos);
1003     v_offset = bytestream_get_le32(&buf_pos);
1004     u_offset = bytestream_get_le32(&buf_pos);
1005     buf_pos += 4; /* reserved */
1006     hdr_pos = buf_pos;
1007     if(data_size == 0x80) return 4;
1008
1009     if(FFMAX3(y_offset, v_offset, u_offset) >= buf_size-16) {
1010         av_log(s->avctx, AV_LOG_ERROR, "y/u/v offset outside buffer\n");
1011         return -1;
1012     }
1013
1014     if(flags & 0x200) {
1015         s->cur_frame = s->iv_frame + 1;
1016         s->ref_frame = s->iv_frame;
1017     } else {
1018         s->cur_frame = s->iv_frame;
1019         s->ref_frame = s->iv_frame + 1;
1020     }
1021
1022     buf_pos = buf + 16 + y_offset;
1023     mc_vector_count = bytestream_get_le32(&buf_pos);
1024     if(2LL*mc_vector_count >= buf_size-16-y_offset) {
1025         av_log(s->avctx, AV_LOG_ERROR, "mc_vector_count too large\n");
1026         return -1;
1027     }
1028
1029     iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, image_width,
1030                     image_height, buf_pos + mc_vector_count * 2, cb_offset, hdr_pos, buf_pos,
1031                     FFMIN(image_width, 160));
1032
1033     if (!(s->avctx->flags & CODEC_FLAG_GRAY))
1034     {
1035
1036         buf_pos = buf + 16 + v_offset;
1037         mc_vector_count = bytestream_get_le32(&buf_pos);
1038         if(2LL*mc_vector_count >= buf_size-16-v_offset) {
1039             av_log(s->avctx, AV_LOG_ERROR, "mc_vector_count too large\n");
1040             return -1;
1041         }
1042
1043         iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
1044                 chroma_height, buf_pos + mc_vector_count * 2, cb_offset, hdr_pos, buf_pos,
1045                 FFMIN(chroma_width, 40));
1046
1047         buf_pos = buf + 16 + u_offset;
1048         mc_vector_count = bytestream_get_le32(&buf_pos);
1049         if(2LL*mc_vector_count >= buf_size-16-u_offset) {
1050             av_log(s->avctx, AV_LOG_ERROR, "mc_vector_count too large\n");
1051             return -1;
1052         }
1053
1054         iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
1055                 chroma_height, buf_pos + mc_vector_count * 2, cb_offset, hdr_pos, buf_pos,
1056                 FFMIN(chroma_width, 40));
1057
1058     }
1059
1060     return 8;
1061 }
1062
1063 static int indeo3_decode_frame(AVCodecContext *avctx,
1064                                void *data, int *data_size,
1065                                AVPacket *avpkt)
1066 {
1067     const uint8_t *buf = avpkt->data;
1068     int buf_size = avpkt->size;
1069     Indeo3DecodeContext *s=avctx->priv_data;
1070     uint8_t *src, *dest;
1071     int y;
1072
1073     if (iv_decode_frame(s, buf, buf_size) < 0)
1074         return -1;
1075
1076     if(s->frame.data[0])
1077         avctx->release_buffer(avctx, &s->frame);
1078
1079     s->frame.reference = 0;
1080     if(avctx->get_buffer(avctx, &s->frame) < 0) {
1081         av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1082         return -1;
1083     }
1084
1085     src = s->cur_frame->Ybuf;
1086     dest = s->frame.data[0];
1087     for (y = 0; y < s->height; y++) {
1088         memcpy(dest, src, s->cur_frame->y_w);
1089         src += s->cur_frame->y_w;
1090         dest += s->frame.linesize[0];
1091     }
1092
1093     if (!(s->avctx->flags & CODEC_FLAG_GRAY))
1094     {
1095         src = s->cur_frame->Ubuf;
1096         dest = s->frame.data[1];
1097         for (y = 0; y < s->height / 4; y++) {
1098             memcpy(dest, src, s->cur_frame->uv_w);
1099             src += s->cur_frame->uv_w;
1100             dest += s->frame.linesize[1];
1101         }
1102
1103         src = s->cur_frame->Vbuf;
1104         dest = s->frame.data[2];
1105         for (y = 0; y < s->height / 4; y++) {
1106             memcpy(dest, src, s->cur_frame->uv_w);
1107             src += s->cur_frame->uv_w;
1108             dest += s->frame.linesize[2];
1109         }
1110     }
1111
1112     *data_size=sizeof(AVFrame);
1113     *(AVFrame*)data= s->frame;
1114
1115     return buf_size;
1116 }
1117
1118 static av_cold int indeo3_decode_end(AVCodecContext *avctx)
1119 {
1120     Indeo3DecodeContext *s = avctx->priv_data;
1121
1122     iv_free_func(s);
1123
1124     return 0;
1125 }
1126
1127 AVCodec indeo3_decoder = {
1128     "indeo3",
1129     CODEC_TYPE_VIDEO,
1130     CODEC_ID_INDEO3,
1131     sizeof(Indeo3DecodeContext),
1132     indeo3_decode_init,
1133     NULL,
1134     indeo3_decode_end,
1135     indeo3_decode_frame,
1136     0,
1137     NULL,
1138     .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo 3"),
1139 };