Statistics
| Branch: | Revision:

ffmpeg / libavcodec / indeo3.c @ 8a01fc47

History | View | Annotate | Download (37.7 KB)

1 deabd4fd Mike Melanson
/*
2
 * Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg
3
 * written, produced, and directed by Alan Smithee
4
 *
5
 * This library is free software; you can redistribute it and/or
6
 * modify it under the terms of the GNU Lesser General Public
7
 * License as published by the Free Software Foundation; either
8
 * version 2 of the License, or (at your option) any later version.
9
 *
10
 * This library is distributed in the hope that it will be useful,
11
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13
 * Lesser General Public License for more details.
14
 *
15
 * You should have received a copy of the GNU Lesser General Public
16
 * License along with this library; if not, write to the Free Software
17
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18
 */
19
20
#include <stdio.h>
21
#include <stdlib.h>
22
#include <string.h>
23
#include <unistd.h>
24
25
#include "common.h"
26
#include "avcodec.h"
27
#include "dsputil.h"
28
#include "mpegvideo.h"
29
30
#include "indeo3data.h"
31
32
typedef struct
33
{
34
  unsigned char *Ybuf;
35
  unsigned char *Ubuf;
36
  unsigned char *Vbuf;
37
  unsigned char *the_buf;
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
    YUVBufs iv_frame[2];
49
    YUVBufs *cur_frame;
50
    YUVBufs *ref_frame;
51
52
    unsigned char *ModPred;
53
    unsigned short *corrector_type;
54
} Indeo3DecodeContext;
55
56
static int 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 int corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 };
63
64
static void build_modpred(Indeo3DecodeContext *s) 
65
{
66
  int i, j;
67
68
  s->ModPred = (unsigned char *) av_malloc (8 * 128);
69
70
  for (i=0; i < 128; ++i) {
71
    s->ModPred[i+0*128] = (i > 126) ? 254 : 2*((i + 1) - ((i + 1) % 2));
72
    s->ModPred[i+1*128] = (i == 7)  ?  20 : ((i == 119 || i == 120)
73
                                 ? 236 : 2*((i + 2) - ((i + 1) % 3)));
74
    s->ModPred[i+2*128] = (i > 125) ? 248 : 2*((i + 2) - ((i + 2) % 4));
75
    s->ModPred[i+3*128] =                         2*((i + 1) - ((i - 3) % 5));
76
    s->ModPred[i+4*128] = (i == 8)  ?  20 : 2*((i + 1) - ((i - 3) % 6));
77
    s->ModPred[i+5*128] =                         2*((i + 4) - ((i + 3) % 7));
78
    s->ModPred[i+6*128] = (i > 123) ? 240 : 2*((i + 4) - ((i + 4) % 8));
79
    s->ModPred[i+7*128] =                         2*((i + 5) - ((i + 4) % 9));
80
  }
81
82
  s->corrector_type = (unsigned short *) av_malloc (24 * 256 * sizeof(unsigned short));
83
84
  for (i=0; i < 24; ++i) {
85
    for (j=0; j < 256; ++j) {
86
      s->corrector_type[i*256+j] = (j < corrector_type_0[i])
87
                                ? 1 : ((j < 248 || (i == 16 && j == 248))
88
                                       ? 0 : corrector_type_2[j - 248]);
89
    }
90
  }
91
}
92
93
static void iv_Decode_Chunk(Indeo3DecodeContext *s, unsigned char *cur, 
94
  unsigned char *ref, int width, int height, unsigned char *buf1, 
95
  long fflags2, unsigned char *hdr,
96
  unsigned char *buf2, int min_width_160);
97
98
#define min(a,b) ((a) < (b) ? (a) : (b))
99
100
/* ---------------------------------------------------------------------- */
101
static void iv_alloc_frames(Indeo3DecodeContext *s) 
102
{
103
  int luma_width, luma_height, luma_pixels, chroma_width, chroma_height,
104 7fea94ce Zdenek Kabelac
      chroma_pixels, i;
105
  unsigned int bufsize;
106 deabd4fd Mike Melanson
107 2ecad8bd Michael Niedermayer
  luma_width   = (s->width  + 3) & (~3);
108
  luma_height  = (s->height + 3) & (~3);
109 deabd4fd Mike Melanson
110
  s->iv_frame[0].y_w = s->iv_frame[0].y_h = 
111
    s->iv_frame[0].the_buf_size = 0;
112
  s->iv_frame[1].y_w = s->iv_frame[1].y_h = 
113
    s->iv_frame[1].the_buf_size = 0;
114
  s->iv_frame[1].the_buf = NULL;
115
116 2ecad8bd Michael Niedermayer
  chroma_width  = ((luma_width >> 2) + 3) & (~3);
117
  chroma_height = ((luma_height>> 2) + 3) & (~3);
118 deabd4fd Mike Melanson
  luma_pixels = luma_width * luma_height;
119
  chroma_pixels = chroma_width * chroma_height;
120
121
  bufsize = luma_pixels * 2 + luma_width * 3 + 
122
    (chroma_pixels + chroma_width) * 4;
123
124
  if((s->iv_frame[0].the_buf = 
125
    (s->iv_frame[0].the_buf_size == 0 ? av_malloc(bufsize) : 
126
      av_realloc(s->iv_frame[0].the_buf, bufsize))) == NULL)
127
    return;
128
  s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width;
129
  s->iv_frame[0].y_h = s->iv_frame[1].y_h = luma_height;
130
  s->iv_frame[0].uv_w = s->iv_frame[1].uv_w = chroma_width;
131
  s->iv_frame[0].uv_h = s->iv_frame[1].uv_h = chroma_height;
132
  s->iv_frame[0].the_buf_size = bufsize;
133
134
  s->iv_frame[0].Ybuf = s->iv_frame[0].the_buf + luma_width;
135
  i = luma_pixels + luma_width * 2;
136
  s->iv_frame[1].Ybuf = s->iv_frame[0].the_buf + i;
137
  i += (luma_pixels + luma_width);
138
  s->iv_frame[0].Ubuf = s->iv_frame[0].the_buf + i;
139
  i += (chroma_pixels + chroma_width);
140
  s->iv_frame[1].Ubuf = s->iv_frame[0].the_buf + i;
141
  i += (chroma_pixels + chroma_width);
142
  s->iv_frame[0].Vbuf = s->iv_frame[0].the_buf + i;
143
  i += (chroma_pixels + chroma_width);
144
  s->iv_frame[1].Vbuf = s->iv_frame[0].the_buf + i;
145
146
  for(i = 1; i <= luma_width; i++)
147
    s->iv_frame[0].Ybuf[-i] = s->iv_frame[1].Ybuf[-i] = 
148
      s->iv_frame[0].Ubuf[-i] = 0x80;
149
150
  for(i = 1; i <= chroma_width; i++) {
151
    s->iv_frame[1].Ubuf[-i] = 0x80;
152
    s->iv_frame[0].Vbuf[-i] = 0x80;
153
    s->iv_frame[1].Vbuf[-i] = 0x80;
154
    s->iv_frame[1].Vbuf[chroma_pixels+i-1] = 0x80;
155
  }
156
}
157
158
/* ---------------------------------------------------------------------- */
159
static void iv_free_func(Indeo3DecodeContext *s) 
160
{
161
  int i;
162
163
  for(i = 0 ; i < 2 ; i++) {
164
    if(s->iv_frame[i].the_buf != NULL) 
165
      av_free(s->iv_frame[i].the_buf);
166
    s->iv_frame[i].Ybuf = s->iv_frame[i].Ubuf = 
167
      s->iv_frame[i].Vbuf = NULL;
168
    s->iv_frame[i].the_buf = NULL;
169
    s->iv_frame[i].the_buf_size = 0;
170
    s->iv_frame[i].y_w = s->iv_frame[i].y_h = 0;
171
    s->iv_frame[i].uv_w = s->iv_frame[i].uv_h = 0;
172
  }
173
174
  av_free(s->ModPred);
175
  av_free(s->corrector_type);
176
}
177
178
/* ---------------------------------------------------------------------- */
179
static unsigned long iv_decode_frame(Indeo3DecodeContext *s, 
180
                                     unsigned char *buf, int buf_size) 
181
{
182
  unsigned int hdr_width, hdr_height,
183
    chroma_width, chroma_height;
184
  unsigned long fflags1, fflags2, fflags3, offs1, offs2, offs3, offs;
185
  unsigned char *hdr_pos, *buf_pos;
186
187
  buf_pos = buf;
188
  buf_pos += 18;
189
190
  fflags1 = le2me_16(*(uint16_t *)buf_pos);
191
  buf_pos += 2;
192
  fflags3 = le2me_32(*(uint32_t *)buf_pos);
193
  buf_pos += 4;
194
  fflags2 = *buf_pos++;
195
  buf_pos += 3;
196
  hdr_height = le2me_16(*(uint16_t *)buf_pos);
197
  buf_pos += 2;
198
  hdr_width = le2me_16(*(uint16_t *)buf_pos);
199
  buf_pos += 2;
200
  chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
201
  chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;
202
  offs1 = le2me_32(*(uint32_t *)buf_pos);
203
  buf_pos += 4;
204
  offs2 = le2me_32(*(uint32_t *)buf_pos);
205
  buf_pos += 4;
206
  offs3 = le2me_32(*(uint32_t *)buf_pos);
207
  buf_pos += 8;
208
  hdr_pos = buf_pos;
209
  if(fflags3 == 0x80) return 4;
210
211
  if(fflags1 & 0x200) {
212
    s->cur_frame = s->iv_frame + 1;
213
    s->ref_frame = s->iv_frame;
214
  } else {
215
    s->cur_frame = s->iv_frame;
216
    s->ref_frame = s->iv_frame + 1;
217
  }
218
219
  buf_pos = buf + 16 + offs1;
220
  offs = le2me_32(*(uint32_t *)buf_pos);
221
  buf_pos += 4;
222
223
  iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width, 
224
    hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos, 
225
    min(hdr_width, 160));
226
227 f970a8e6 Alex Beregszaszi
  if (!(s->avctx->flags & CODEC_FLAG_GRAY))
228
  {
229
230 deabd4fd Mike Melanson
  buf_pos = buf + 16 + offs2;
231
  offs = le2me_32(*(uint32_t *)buf_pos);
232
  buf_pos += 4;
233
234
  iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width, 
235
    chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos, 
236
    min(chroma_width, 40));
237
238
  buf_pos = buf + 16 + offs3;
239
  offs = le2me_32(*(uint32_t *)buf_pos);
240
  buf_pos += 4;
241
242
  iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width, 
243
    chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos, 
244
    min(chroma_width, 40));
245
246 f970a8e6 Alex Beregszaszi
  }
247
248 deabd4fd Mike Melanson
  return 8;
249
}
250
251
typedef struct {
252
  long xpos;
253
  long ypos;
254
  long width;
255
  long height;
256
  long split_flag;
257
  long split_direction;
258
  long usl7;
259
} ustr_t;
260
261
/* ---------------------------------------------------------------------- */
262
263 a44f8ccb Mike Melanson
#define LV1_CHECK(buf1,rle_v3,lv1,lp2)  \
264
  if((lv1 & 0x80) != 0) {   \
265
    if(rle_v3 != 0)         \
266
      rle_v3 = 0;           \
267
    else {                  \
268
      rle_v3 = 1;           \
269
      buf1 -= 2;            \
270
    }                       \
271
  }                         \
272
  lp2 = 4;
273
274
275
#define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)  \
276
  if(rle_v3 == 0) {         \
277
    rle_v2 = *buf1;         \
278
    rle_v1 = 1;             \
279
    if(rle_v2 > 32) {       \
280
      rle_v2 -= 32;         \
281
      rle_v1 = 0;           \
282
    }                       \
283
    rle_v3 = 1;             \
284
  }                         \
285
  buf1--;
286
287
288
#define LP2_CHECK(buf1,rle_v3,lp2)  \
289
  if(lp2 == 0 && rle_v3 != 0)     \
290
    rle_v3 = 0;           \
291
  else {                  \
292
    buf1--;               \
293
    rle_v3 = 1;           \
294
  }
295
296
297
#define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
298
  rle_v2--;             \
299
  if(rle_v2 == 0) {     \
300
    rle_v3 = 0;         \
301
    buf1 += 2;          \
302
  }                     \
303
  lp2 = 4;
304
305 deabd4fd Mike Melanson
static void iv_Decode_Chunk(Indeo3DecodeContext *s,
306
  unsigned char *cur, unsigned char *ref, int width, int height, 
307
  unsigned char *buf1, long fflags2, unsigned char *hdr,
308
  unsigned char *buf2, int min_width_160)
309
{
310
  unsigned char bit_buf;
311
  unsigned long bit_pos, lv, lv1, lv2;
312
  long *width_tbl, width_tbl_arr[10];
313
  char *ref_vectors;
314
  unsigned char *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
315 09b85c13 Fabrice Bellard
  uint32_t *cur_lp, *ref_lp;
316
  const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
317 deabd4fd Mike Melanson
  unsigned short *correction_type_sp[2];
318 a44f8ccb Mike Melanson
  ustr_t strip_tbl[20], *strip;
319 deabd4fd Mike Melanson
  int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
320
    rle_v1, rle_v2, rle_v3;
321
322
  bit_buf = 0;
323
  ref_vectors = NULL;
324
325
  width_tbl = width_tbl_arr + 1;
326
  i = (width < 0 ? width + 3 : width)/4;
327
  for(j = -1; j < 8; j++) 
328
    width_tbl[j] = i * j;
329
330 a44f8ccb Mike Melanson
  strip = strip_tbl;
331 deabd4fd Mike Melanson
332
  for(region_160_width = 0; region_160_width < (width - min_width_160); region_160_width += min_width_160);
333
334 a44f8ccb Mike Melanson
  strip->ypos = strip->xpos = 0;
335
  for(strip->width = min_width_160; width > strip->width; strip->width *= 2);
336
  strip->height = height;
337
  strip->split_direction = 0;
338
  strip->split_flag = 0;
339
  strip->usl7 = 0;
340 deabd4fd Mike Melanson
341
  bit_pos = 0;
342
343
  rle_v1 = rle_v2 = rle_v3 = 0;
344
345 a44f8ccb Mike Melanson
  while(strip >= strip_tbl) {
346 deabd4fd Mike Melanson
    if(bit_pos <= 0) {
347
      bit_pos = 8;
348
      bit_buf = *buf1++;
349
    }
350
351
    bit_pos -= 2;
352
    cmd = (bit_buf >> bit_pos) & 0x03;
353
354
    if(cmd == 0) {
355 a44f8ccb Mike Melanson
      strip++;
356
      memcpy(strip, strip-1, sizeof(ustr_t));
357
      strip->split_flag = 1;
358
      strip->split_direction = 0;
359
      strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4);
360 deabd4fd Mike Melanson
      continue;
361
    } else if(cmd == 1) {
362 a44f8ccb Mike Melanson
      strip++;
363
      memcpy(strip, strip-1, sizeof(ustr_t));
364
      strip->split_flag = 1;
365
      strip->split_direction = 1;
366
      strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4);
367 deabd4fd Mike Melanson
      continue;
368
    } else if(cmd == 2) {
369 a44f8ccb Mike Melanson
      if(strip->usl7 == 0) {
370
        strip->usl7 = 1;
371 deabd4fd Mike Melanson
        ref_vectors = NULL;
372
        continue;
373
      }
374
    } else if(cmd == 3) {
375 a44f8ccb Mike Melanson
      if(strip->usl7 == 0) {
376
        strip->usl7 = 1;
377 deabd4fd Mike Melanson
        ref_vectors = buf2 + (*buf1 * 2);
378
        buf1++;
379
        continue;
380
      }
381
    }
382
383 a44f8ccb Mike Melanson
    cur_frm_pos = cur + width * strip->ypos + strip->xpos;
384 deabd4fd Mike Melanson
385 a44f8ccb Mike Melanson
    if((blks_width = strip->width) < 0) 
386 deabd4fd Mike Melanson
      blks_width += 3;
387
    blks_width >>= 2;
388 a44f8ccb Mike Melanson
    blks_height = strip->height;
389 deabd4fd Mike Melanson
390
    if(ref_vectors != NULL) {
391 a44f8ccb Mike Melanson
      ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +
392
        ref_vectors[1] + strip->xpos;
393 deabd4fd Mike Melanson
    } else 
394
      ref_frm_pos = cur_frm_pos - width_tbl[4];
395
396
    if(cmd == 2) {
397
      if(bit_pos <= 0) {
398
        bit_pos = 8;
399
        bit_buf = *buf1++;
400
      }
401
402
      bit_pos -= 2;
403
      cmd = (bit_buf >> bit_pos) & 0x03;
404
405
      if(cmd == 0 || ref_vectors != NULL) {
406
        for(lp1 = 0; lp1 < blks_width; lp1++) {
407
          for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])
408 09b85c13 Fabrice Bellard
            ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
409 deabd4fd Mike Melanson
          cur_frm_pos += 4;
410
          ref_frm_pos += 4;
411
        }
412
      } else if(cmd != 1) 
413
        return;
414
    } else {
415
      k = *buf1 >> 4;
416
      j = *buf1 & 0x0f;
417
      buf1++;
418
      lv = j + fflags2;
419
420
      if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {
421
        cp2 = s->ModPred + ((lv - 8) << 7);
422
        cp = ref_frm_pos;
423 09b85c13 Fabrice Bellard
        for(i = 0; i < blks_width << 2; i++) { 
424
            int v = *cp >> 1;
425
            *(cp++) = cp2[v]; 
426
        }
427 deabd4fd Mike Melanson
      }
428
429
      if(k == 1 || k == 4) {
430
        lv = (hdr[j] & 0xf) + fflags2;
431
        correction_type_sp[0] = s->corrector_type + (lv << 8);
432
        correction_lp[0] = correction + (lv << 8);
433
        lv = (hdr[j] >> 4) + fflags2;
434
        correction_lp[1] = correction + (lv << 8);
435
        correction_type_sp[1] = s->corrector_type + (lv << 8);
436
      } else {
437
        correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
438
        correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
439
        correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
440
        correction_lp[0] = correction_lp[1] = correction + (lv << 8);
441
      }
442
443
      switch(k) {
444
        case 1:
445
        case 0:                    /********** CASE 0 **********/
446
          for( ; blks_height > 0; blks_height -= 4) {
447
            for(lp1 = 0; lp1 < blks_width; lp1++) {
448
              for(lp2 = 0; lp2 < 4; ) {
449
                k = *buf1++;
450 09b85c13 Fabrice Bellard
                cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];
451
                ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];
452 deabd4fd Mike Melanson
453
                switch(correction_type_sp[0][k]) {
454
                  case 0:
455
                    *cur_lp = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
456
                    lp2++;
457
                    break;
458
                  case 1:
459
                    ((unsigned short *)cur_lp)[0] = ((((unsigned short *)(ref_lp))[0] >> 1)
460
                      + correction_lp[lp2 & 0x01][*buf1++]) << 1;
461
                    ((unsigned short *)cur_lp)[1] = ((((unsigned short *)(ref_lp))[1] >> 1)
462
                      + correction_lp[lp2 & 0x01][k]) << 1;
463
                    lp2++;
464
                    break;
465
                  case 2:
466
                    if(lp2 == 0) {
467
                      for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
468
                        cur_lp[j] = ref_lp[j];
469
                      lp2 += 2;
470
                    }
471
                    break;
472
                  case 3:
473
                    if(lp2 < 2) {
474
                      for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
475
                        cur_lp[j] = ref_lp[j];
476
                      lp2 = 3;
477
                    }
478
                    break;
479
                  case 8:
480
                    if(lp2 == 0) {
481 a44f8ccb Mike Melanson
                      RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
482 deabd4fd Mike Melanson
483
                      if(rle_v1 == 1 || ref_vectors != NULL) {
484
                        for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
485
                          cur_lp[j] = ref_lp[j];
486
                      }
487
488 a44f8ccb Mike Melanson
                      RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
489 deabd4fd Mike Melanson
                      break;
490
                    } else {
491
                      rle_v1 = 1;
492
                      rle_v2 = *buf1 - 1;
493
                    }
494
                  case 5:
495 a44f8ccb Mike Melanson
                      LP2_CHECK(buf1,rle_v3,lp2)
496 deabd4fd Mike Melanson
                  case 4:
497
                    for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
498
                      cur_lp[j] = ref_lp[j];
499
                    lp2 = 4;
500
                    break;
501
502
                  case 7:
503
                    if(rle_v3 != 0) 
504
                      rle_v3 = 0;
505
                    else {
506
                      buf1--;
507
                      rle_v3 = 1;
508
                    }
509
                  case 6:
510
                    if(ref_vectors != NULL) {
511
                      for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
512
                        cur_lp[j] = ref_lp[j];
513
                    }
514
                    lp2 = 4;
515
                    break;
516
517
                  case 9:
518
                    lv1 = *buf1++;
519
                    lv = (lv1 & 0x7F) << 1;
520
                    lv += (lv << 8);
521
                    lv += (lv << 16);
522
                    for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
523
                      cur_lp[j] = lv;
524
525 a44f8ccb Mike Melanson
                    LV1_CHECK(buf1,rle_v3,lv1,lp2)
526 deabd4fd Mike Melanson
                    break;
527
                  default: 
528
                    return;
529
                }
530
              }
531
532
              cur_frm_pos += 4;
533
              ref_frm_pos += 4;
534
            }
535
536
            cur_frm_pos += ((width - blks_width) * 4);
537
            ref_frm_pos += ((width - blks_width) * 4);
538
          }
539
          break;
540
541
        case 4:
542
        case 3:                    /********** CASE 3 **********/
543
          if(ref_vectors != NULL) 
544
            return;
545
          flag1 = 1;
546
547
          for( ; blks_height > 0; blks_height -= 8) {
548
            for(lp1 = 0; lp1 < blks_width; lp1++) {
549
              for(lp2 = 0; lp2 < 4; ) {
550
                k = *buf1++;
551
552 09b85c13 Fabrice Bellard
                cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
553
                ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
554 deabd4fd Mike Melanson
555
                switch(correction_type_sp[lp2 & 0x01][k]) {
556
                  case 0:
557
                    cur_lp[width_tbl[1]] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
558 a44f8ccb Mike Melanson
                    if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
559 deabd4fd Mike Melanson
                      cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
560
                    else
561
                      cur_lp[0] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
562
                    lp2++;
563
                    break;
564
565
                  case 1:
566
                    ((unsigned short *)cur_lp)[width_tbl[2]] =
567
                      ((((unsigned short *)ref_lp)[0] >> 1) + correction_lp[lp2 & 0x01][*buf1++]) << 1;
568
                    ((unsigned short *)cur_lp)[width_tbl[2]+1] =
569
                      ((((unsigned short *)ref_lp)[1] >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
570 a44f8ccb Mike Melanson
                    if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
571 deabd4fd Mike Melanson
                      cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
572
                    else
573
                      cur_lp[0] = cur_lp[width_tbl[1]];
574
                    lp2++;
575
                    break;
576
577
                  case 2:
578
                    if(lp2 == 0) {
579
                      for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
580
                        cur_lp[j] = *ref_lp;
581
                      lp2 += 2;
582
                    }
583
                    break;
584
585
                  case 3:
586
                    if(lp2 < 2) {
587
                      for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
588
                        cur_lp[j] = *ref_lp;
589
                      lp2 = 3;
590
                    }
591
                    break;
592
593
                  case 6:
594
                    lp2 = 4;
595
                    break;
596
597
                  case 7:
598
                    if(rle_v3 != 0) 
599
                      rle_v3 = 0;
600
                    else {
601
                      buf1--;
602
                      rle_v3 = 1;
603
                    }
604
                    lp2 = 4;
605
                    break;
606
607
                  case 8:
608
                    if(lp2 == 0) {
609 a44f8ccb Mike Melanson
                      RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
610 deabd4fd Mike Melanson
611
                      if(rle_v1 == 1) {
612
                        for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
613
                          cur_lp[j] = ref_lp[j];
614
                      }
615
616 a44f8ccb Mike Melanson
                      RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
617 deabd4fd Mike Melanson
                      break;
618
                    } else {
619
                      rle_v2 = (*buf1) - 1;
620
                      rle_v1 = 1;
621
                    }
622
                  case 5:
623 a44f8ccb Mike Melanson
                      LP2_CHECK(buf1,rle_v3,lp2)
624 deabd4fd Mike Melanson
                  case 4:
625
                    for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
626
                      cur_lp[j] = *ref_lp;
627
                    lp2 = 4;
628
                    break;
629
630
                  case 9:
631 9b879566 Michel Bardiaux
                    av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
632 deabd4fd Mike Melanson
                    lv1 = *buf1++;
633
                    lv = (lv1 & 0x7F) << 1;
634
                    lv += (lv << 8);
635
                    lv += (lv << 16);
636
637
                    for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
638
                      cur_lp[j] = lv;
639
640 a44f8ccb Mike Melanson
                    LV1_CHECK(buf1,rle_v3,lv1,lp2)
641 deabd4fd Mike Melanson
                    break;
642
643
                  default: 
644
                    return;
645
                }
646
              }
647
648
              cur_frm_pos += 4;
649
            }
650
651
            cur_frm_pos += (((width * 2) - blks_width) * 4);
652
            flag1 = 0;
653
          }
654
          break;
655
656
        case 10:                    /********** CASE 10 **********/
657
          if(ref_vectors == NULL) {
658
            flag1 = 1;
659
660
            for( ; blks_height > 0; blks_height -= 8) {
661
              for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
662
                for(lp2 = 0; lp2 < 4; ) {
663
                  k = *buf1++;
664 09b85c13 Fabrice Bellard
                  cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
665
                  ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
666 deabd4fd Mike Melanson
                  lv1 = ref_lp[0];
667
                  lv2 = ref_lp[1];
668
                  if(lp2 == 0 && flag1 != 0) {
669
                    lv1 = lv1 & 0x00FF00FF;
670
                    lv1 = (lv1 << 8) | lv1;
671
                    lv2 = lv2 & 0x00FF00FF;
672
                    lv2 = (lv2 << 8) | lv2;
673
                  }
674
675
                  switch(correction_type_sp[lp2 & 0x01][k]) {
676
                    case 0:
677
                      cur_lp[width_tbl[1]] = ((lv1 >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1;
678
                      cur_lp[width_tbl[1]+1] = ((lv2 >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1;
679 a44f8ccb Mike Melanson
                      if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
680 deabd4fd Mike Melanson
                        cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
681
                        cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
682
                      } else {
683
                        cur_lp[0] = cur_lp[width_tbl[1]];
684
                        cur_lp[1] = cur_lp[width_tbl[1]+1];
685
                      }
686
                      lp2++;
687
                      break;
688
689
                    case 1:
690
                      cur_lp[width_tbl[1]] = ((lv1 >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1++]) << 1;
691
                      cur_lp[width_tbl[1]+1] = ((lv2 >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1;
692 a44f8ccb Mike Melanson
                      if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
693 deabd4fd Mike Melanson
                        cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
694
                        cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
695
                      } else {
696
                        cur_lp[0] = cur_lp[width_tbl[1]];
697
                        cur_lp[1] = cur_lp[width_tbl[1]+1];
698
                      }
699
                      lp2++;
700
                      break;
701
702
                    case 2:
703
                      if(lp2 == 0) {
704
                        if(flag1 != 0) {
705
                          for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
706
                            cur_lp[j] = lv1;
707
                            cur_lp[j+1] = lv2;
708
                          }
709
                          cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
710
                          cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
711
                        } else {
712
                          for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
713
                            cur_lp[j] = lv1;
714
                            cur_lp[j+1] = lv2;
715
                          }
716
                        }
717
                        lp2 += 2;
718
                      }
719
                      break;
720
721
                    case 3:
722
                      if(lp2 < 2) {
723
                        if(lp2 == 0 && flag1 != 0) {
724
                          for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
725
                            cur_lp[j] = lv1;
726
                            cur_lp[j+1] = lv2;
727
                          }
728
                          cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
729
                          cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
730
                        } else {
731
                          for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
732
                            cur_lp[j] = lv1;
733
                            cur_lp[j+1] = lv2;
734
                          }
735
                        }
736
                        lp2 = 3;
737
                      }
738
                      break;
739
740
                    case 8:
741
                      if(lp2 == 0) {
742 a44f8ccb Mike Melanson
                        RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
743 deabd4fd Mike Melanson
                        if(rle_v1 == 1) {
744
                          if(flag1 != 0) {
745
                            for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
746
                              cur_lp[j] = lv1;
747
                              cur_lp[j+1] = lv2;
748
                            }
749
                            cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
750
                            cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
751
                          } else {
752
                            for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
753
                              cur_lp[j] = lv1;
754
                              cur_lp[j+1] = lv2;
755
                            }
756
                          }
757
                        }
758 a44f8ccb Mike Melanson
                        RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
759 deabd4fd Mike Melanson
                        break;
760
                      } else {
761
                        rle_v1 = 1;
762
                        rle_v2 = (*buf1) - 1;
763
                      }
764
                    case 5:
765 a44f8ccb Mike Melanson
                        LP2_CHECK(buf1,rle_v3,lp2)
766 deabd4fd Mike Melanson
                    case 4:
767
                      if(lp2 == 0 && flag1 != 0) {
768
                        for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
769
                          cur_lp[j] = lv1;
770
                          cur_lp[j+1] = lv2;
771
                        }
772
                        cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
773
                        cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
774
                      } else {
775
                        for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
776
                          cur_lp[j] = lv1;
777
                          cur_lp[j+1] = lv2;
778
                        }
779
                      }
780
                      lp2 = 4;
781
                      break;
782
783
                    case 6:
784
                      lp2 = 4;
785
                      break;
786
787
                    case 7:
788
                      if(lp2 == 0) {
789
                        if(rle_v3 != 0) 
790
                          rle_v3 = 0;
791
                        else {
792
                          buf1--;
793
                          rle_v3 = 1;
794
                        }
795
                        lp2 = 4;
796
                      }
797
                      break;
798
799
                    case 9:
800 9b879566 Michel Bardiaux
                      av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
801 deabd4fd Mike Melanson
                      lv1 = *buf1;
802
                      lv = (lv1 & 0x7F) << 1;
803
                      lv += (lv << 8);
804
                      lv += (lv << 16);
805
                      for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
806
                        cur_lp[j] = lv;
807 a44f8ccb Mike Melanson
                      LV1_CHECK(buf1,rle_v3,lv1,lp2)
808 deabd4fd Mike Melanson
                      break;
809
810
                    default: 
811
                      return;
812
                  }
813
                }
814
815
                cur_frm_pos += 8;
816
              }
817
818
              cur_frm_pos += (((width * 2) - blks_width) * 4);
819
              flag1 = 0;
820
            }
821
          } else {
822
            for( ; blks_height > 0; blks_height -= 8) {
823
              for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
824
                for(lp2 = 0; lp2 < 4; ) {
825
                  k = *buf1++;
826 09b85c13 Fabrice Bellard
                  cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
827
                  ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
828 deabd4fd Mike Melanson
829
                  switch(correction_type_sp[lp2 & 0x01][k]) {
830
                    case 0:
831
                      lv1 = correctionloworder_lp[lp2 & 0x01][k];
832
                      lv2 = correctionhighorder_lp[lp2 & 0x01][k];
833
                      cur_lp[0] = ((ref_lp[0] >> 1) + lv1) << 1;
834
                      cur_lp[1] = ((ref_lp[1] >> 1) + lv2) << 1;
835
                      cur_lp[width_tbl[1]] = ((ref_lp[width_tbl[1]] >> 1) + lv1) << 1;
836
                      cur_lp[width_tbl[1]+1] = ((ref_lp[width_tbl[1]+1] >> 1) + lv2) << 1;
837
                      lp2++;
838
                      break;
839
840
                    case 1:
841
                      lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];
842
                      lv2 = correctionloworder_lp[lp2 & 0x01][k];
843
                      cur_lp[0] = ((ref_lp[0] >> 1) + lv1) << 1;
844
                      cur_lp[1] = ((ref_lp[1] >> 1) + lv2) << 1;
845
                      cur_lp[width_tbl[1]] = ((ref_lp[width_tbl[1]] >> 1) + lv1) << 1;
846
                      cur_lp[width_tbl[1]+1] = ((ref_lp[width_tbl[1]+1] >> 1) + lv2) << 1;
847
                      lp2++;
848
                      break;
849
850
                    case 2:
851
                      if(lp2 == 0) {
852
                        for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
853
                          cur_lp[j] = ref_lp[j];
854
                          cur_lp[j+1] = ref_lp[j+1];
855
                        }
856
                        lp2 += 2;
857
                      }
858
                      break;
859
860
                    case 3:
861
                      if(lp2 < 2) {
862
                        for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
863
                          cur_lp[j] = ref_lp[j];
864
                          cur_lp[j+1] = ref_lp[j+1];
865
                        }
866
                        lp2 = 3;
867
                      }
868
                      break;
869
870
                    case 8:
871
                      if(lp2 == 0) {
872 a44f8ccb Mike Melanson
                        RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
873 deabd4fd Mike Melanson
                        for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
874 09b85c13 Fabrice Bellard
                          ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
875
                          ((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1];
876 deabd4fd Mike Melanson
                        }
877 a44f8ccb Mike Melanson
                        RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
878 deabd4fd Mike Melanson
                        break;
879
                      } else {
880
                        rle_v1 = 1;
881
                        rle_v2 = (*buf1) - 1;
882
                      }
883
                    case 5:
884
                    case 7:
885 a44f8ccb Mike Melanson
                        LP2_CHECK(buf1,rle_v3,lp2)
886 deabd4fd Mike Melanson
                    case 6:
887
                    case 4:
888
                      for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
889
                        cur_lp[j] = ref_lp[j];
890
                        cur_lp[j+1] = ref_lp[j+1];
891
                      }
892
                      lp2 = 4;
893
                      break;
894
895
                    case 9:
896 9b879566 Michel Bardiaux
                      av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
897 deabd4fd Mike Melanson
                      lv1 = *buf1;
898
                      lv = (lv1 & 0x7F) << 1;
899
                      lv += (lv << 8);
900
                      lv += (lv << 16);
901
                      for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
902 09b85c13 Fabrice Bellard
                        ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv;
903 a44f8ccb Mike Melanson
                      LV1_CHECK(buf1,rle_v3,lv1,lp2)
904 deabd4fd Mike Melanson
                      break;
905
906
                    default: 
907
                      return;
908
                  }
909
                }
910
911
                cur_frm_pos += 8;
912
                ref_frm_pos += 8;
913
              }
914
915
              cur_frm_pos += (((width * 2) - blks_width) * 4);
916
              ref_frm_pos += (((width * 2) - blks_width) * 4);
917
            }
918
          }
919
          break;
920
921
        case 11:                    /********** CASE 11 **********/
922
          if(ref_vectors == NULL) 
923
            return;
924
925
          for( ; blks_height > 0; blks_height -= 8) {
926
            for(lp1 = 0; lp1 < blks_width; lp1++) {
927
              for(lp2 = 0; lp2 < 4; ) {
928
                k = *buf1++;
929 09b85c13 Fabrice Bellard
                cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
930
                ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
931 deabd4fd Mike Melanson
932
                switch(correction_type_sp[lp2 & 0x01][k]) {
933
                  case 0:
934
                    cur_lp[0] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
935
                    cur_lp[width_tbl[1]] = ((ref_lp[width_tbl[1]] >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
936
                    lp2++;
937
                    break;
938
939
                  case 1:
940
                    lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);
941
                    lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);
942
                    ((unsigned short *)cur_lp)[0] = ((((unsigned short *)ref_lp)[0] >> 1) + lv1) << 1;
943
                    ((unsigned short *)cur_lp)[1] = ((((unsigned short *)ref_lp)[1] >> 1) + lv2) << 1;
944
                    ((unsigned short *)cur_lp)[width_tbl[2]] = ((((unsigned short *)ref_lp)[width_tbl[2]] >> 1) + lv1) << 1;
945
                    ((unsigned short *)cur_lp)[width_tbl[2]+1] = ((((unsigned short *)ref_lp)[width_tbl[2]+1] >> 1) + lv2) << 1;
946
                    lp2++;
947
                    break;
948
949
                  case 2:
950
                    if(lp2 == 0) {
951
                      for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
952
                        cur_lp[j] = ref_lp[j];
953
                      lp2 += 2;
954
                    }
955
                    break;
956
957
                  case 3:
958
                    if(lp2 < 2) {
959
                      for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
960
                        cur_lp[j] = ref_lp[j];
961
                      lp2 = 3;
962
                    }
963
                    break;
964
965
                  case 8:
966
                    if(lp2 == 0) {
967 a44f8ccb Mike Melanson
                      RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
968 deabd4fd Mike Melanson
969
                      for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
970
                        cur_lp[j] = ref_lp[j];
971
972 a44f8ccb Mike Melanson
                      RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
973 deabd4fd Mike Melanson
                      break;
974
                    } else {
975
                      rle_v1 = 1;
976
                      rle_v2 = (*buf1) - 1;
977
                    }
978
                  case 5:
979
                  case 7:
980 a44f8ccb Mike Melanson
                      LP2_CHECK(buf1,rle_v3,lp2)
981 deabd4fd Mike Melanson
                  case 4:
982
                  case 6:
983
                    for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
984
                      cur_lp[j] = ref_lp[j];
985
                    lp2 = 4;
986
                    break;
987
988
                case 9:
989 9b879566 Michel Bardiaux
                  av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
990 deabd4fd Mike Melanson
                  lv1 = *buf1++;
991
                  lv = (lv1 & 0x7F) << 1;
992
                  lv += (lv << 8);
993
                  lv += (lv << 16);
994
                  for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
995
                    cur_lp[j] = lv;
996 a44f8ccb Mike Melanson
                  LV1_CHECK(buf1,rle_v3,lv1,lp2)
997 deabd4fd Mike Melanson
                  break;
998
999
                  default: 
1000
                    return;
1001
                }
1002
              }
1003
1004
              cur_frm_pos += 4;
1005
              ref_frm_pos += 4;
1006
            }
1007
1008
            cur_frm_pos += (((width * 2) - blks_width) * 4);
1009
            ref_frm_pos += (((width * 2) - blks_width) * 4);
1010
          }
1011
          break;
1012
1013
        default: 
1014
          return;
1015
      }
1016
    }
1017
1018 a44f8ccb Mike Melanson
    if(strip < strip_tbl) 
1019 deabd4fd Mike Melanson
      return;
1020
1021 a44f8ccb Mike Melanson
    for( ; strip >= strip_tbl; strip--) {
1022
      if(strip->split_flag != 0) {
1023
        strip->split_flag = 0;
1024
        strip->usl7 = (strip-1)->usl7;
1025 deabd4fd Mike Melanson
1026 a44f8ccb Mike Melanson
        if(strip->split_direction) {
1027
          strip->xpos += strip->width;
1028
          strip->width = (strip-1)->width - strip->width;
1029
          if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)
1030
            strip->width = width - strip->xpos;
1031 deabd4fd Mike Melanson
        } else {
1032 a44f8ccb Mike Melanson
          strip->ypos += strip->height;
1033
          strip->height = (strip-1)->height - strip->height;
1034 deabd4fd Mike Melanson
        }
1035
        break;
1036
      }
1037
    }
1038
  }
1039
}
1040
1041
static int indeo3_decode_init(AVCodecContext *avctx)
1042
{
1043
    Indeo3DecodeContext *s = avctx->priv_data;
1044
1045
    s->avctx = avctx;
1046
    s->width = avctx->width;
1047
    s->height = avctx->height;
1048
    avctx->pix_fmt = PIX_FMT_YUV410P;
1049
    avctx->has_b_frames = 0;
1050
1051
    build_modpred(s);
1052
    iv_alloc_frames(s);
1053
1054
    return 0;
1055
}
1056
1057
static int indeo3_decode_frame(AVCodecContext *avctx,
1058
                               void *data, int *data_size,
1059
                               unsigned char *buf, int buf_size)
1060
{
1061
    Indeo3DecodeContext *s=avctx->priv_data;
1062
    unsigned char *src, *dest;
1063
    int y;
1064
1065 fc374fe2 Michael Niedermayer
    /* no supplementary picture */
1066
    if (buf_size == 0) {
1067
        return 0;
1068
    }
1069
1070 deabd4fd Mike Melanson
    iv_decode_frame(s, buf, buf_size);
1071
1072 e20c4069 Michael Niedermayer
    if(s->frame.data[0])
1073
        avctx->release_buffer(avctx, &s->frame);
1074
1075 deabd4fd Mike Melanson
    s->frame.reference = 0;
1076
    if(avctx->get_buffer(avctx, &s->frame) < 0) {
1077 9b879566 Michel Bardiaux
        av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1078 deabd4fd Mike Melanson
        return -1;
1079
    }
1080
1081
    src = s->cur_frame->Ybuf;
1082
    dest = s->frame.data[0];
1083
    for (y = 0; y < s->height; y++) {
1084
      memcpy(dest, src, s->cur_frame->y_w);
1085
      src += s->cur_frame->y_w;
1086
      dest += s->frame.linesize[0];
1087
    }
1088
1089 f970a8e6 Alex Beregszaszi
    if (!(s->avctx->flags & CODEC_FLAG_GRAY))
1090
    {
1091 deabd4fd Mike Melanson
    src = s->cur_frame->Ubuf;
1092
    dest = s->frame.data[1];
1093
    for (y = 0; y < s->height / 4; y++) {
1094
      memcpy(dest, src, s->cur_frame->uv_w);
1095
      src += s->cur_frame->uv_w;
1096
      dest += s->frame.linesize[1];
1097
    }
1098
1099
    src = s->cur_frame->Vbuf;
1100
    dest = s->frame.data[2];
1101
    for (y = 0; y < s->height / 4; y++) {
1102
      memcpy(dest, src, s->cur_frame->uv_w);
1103
      src += s->cur_frame->uv_w;
1104
      dest += s->frame.linesize[2];
1105
    }
1106 f970a8e6 Alex Beregszaszi
    }
1107 deabd4fd Mike Melanson
1108
    *data_size=sizeof(AVFrame);
1109
    *(AVFrame*)data= s->frame;
1110
1111
    return buf_size;
1112
}
1113
1114
static int indeo3_decode_end(AVCodecContext *avctx)
1115
{
1116
    Indeo3DecodeContext *s = avctx->priv_data;
1117
1118
    iv_free_func(s);
1119
1120
    return 0;
1121
}
1122
1123
AVCodec indeo3_decoder = {
1124
    "indeo3",
1125
    CODEC_TYPE_VIDEO,
1126
    CODEC_ID_INDEO3,
1127
    sizeof(Indeo3DecodeContext),
1128
    indeo3_decode_init,
1129
    NULL,
1130
    indeo3_decode_end,
1131
    indeo3_decode_frame,
1132
    0,
1133
    NULL
1134
};