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ffmpeg / libavcodec / indeo3.c @ 2029f312

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1
/*
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 * Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg
3
 * written, produced, and directed by Alan Smithee
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
10
 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
26

    
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#include "avcodec.h"
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#include "dsputil.h"
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#include "mpegvideo.h"
30

    
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#include "indeo3data.h"
32

    
33
typedef struct
34
{
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  unsigned char *Ybuf;
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  unsigned char *Ubuf;
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  unsigned char *Vbuf;
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  unsigned char *the_buf;
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  unsigned int the_buf_size;
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  unsigned short y_w, y_h;
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  unsigned short uv_w, uv_h;
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} YUVBufs;
43

    
44
typedef struct Indeo3DecodeContext {
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    AVCodecContext *avctx;
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    int width, height;
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    AVFrame frame;
48

    
49
    YUVBufs iv_frame[2];
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    YUVBufs *cur_frame;
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    YUVBufs *ref_frame;
52

    
53
    unsigned char *ModPred;
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    unsigned short *corrector_type;
55
} Indeo3DecodeContext;
56

    
57
static int corrector_type_0[24] = {
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  195, 159, 133, 115, 101,  93,  87,  77,
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  195, 159, 133, 115, 101,  93,  87,  77,
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  128,  79,  79,  79,  79,  79,  79,  79
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};
62

    
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static int corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 };
64

    
65
static void build_modpred(Indeo3DecodeContext *s)
66
{
67
  int i, j;
68

    
69
  s->ModPred = (unsigned char *) av_malloc (8 * 128);
70

    
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  for (i=0; i < 128; ++i) {
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    s->ModPred[i+0*128] = (i > 126) ? 254 : 2*((i + 1) - ((i + 1) % 2));
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    s->ModPred[i+1*128] = (i == 7)  ?  20 : ((i == 119 || i == 120)
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                                 ? 236 : 2*((i + 2) - ((i + 1) % 3)));
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    s->ModPred[i+2*128] = (i > 125) ? 248 : 2*((i + 2) - ((i + 2) % 4));
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    s->ModPred[i+3*128] =                        2*((i + 1) - ((i - 3) % 5));
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    s->ModPred[i+4*128] = (i == 8)  ?  20 : 2*((i + 1) - ((i - 3) % 6));
78
    s->ModPred[i+5*128] =                        2*((i + 4) - ((i + 3) % 7));
79
    s->ModPred[i+6*128] = (i > 123) ? 240 : 2*((i + 4) - ((i + 4) % 8));
80
    s->ModPred[i+7*128] =                        2*((i + 5) - ((i + 4) % 9));
81
  }
82

    
83
  s->corrector_type = (unsigned short *) av_malloc (24 * 256 * sizeof(unsigned short));
84

    
85
  for (i=0; i < 24; ++i) {
86
    for (j=0; j < 256; ++j) {
87
      s->corrector_type[i*256+j] = (j < corrector_type_0[i])
88
                                ? 1 : ((j < 248 || (i == 16 && j == 248))
89
                                       ? 0 : corrector_type_2[j - 248]);
90
    }
91
  }
92
}
93

    
94
static void iv_Decode_Chunk(Indeo3DecodeContext *s, unsigned char *cur,
95
  unsigned char *ref, int width, int height, unsigned char *buf1,
96
  long fflags2, unsigned char *hdr,
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  unsigned char *buf2, int min_width_160);
98

    
99
/* ---------------------------------------------------------------------- */
100
static void iv_alloc_frames(Indeo3DecodeContext *s)
101
{
102
  int luma_width, luma_height, luma_pixels, chroma_width, chroma_height,
103
      chroma_pixels, i;
104
  unsigned int bufsize;
105

    
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  luma_width   = (s->width  + 3) & (~3);
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  luma_height  = (s->height + 3) & (~3);
108

    
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  s->iv_frame[0].y_w = s->iv_frame[0].y_h =
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    s->iv_frame[0].the_buf_size = 0;
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  s->iv_frame[1].y_w = s->iv_frame[1].y_h =
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    s->iv_frame[1].the_buf_size = 0;
113
  s->iv_frame[1].the_buf = NULL;
114

    
115
  chroma_width  = ((luma_width >> 2) + 3) & (~3);
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  chroma_height = ((luma_height>> 2) + 3) & (~3);
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  luma_pixels = luma_width * luma_height;
118
  chroma_pixels = chroma_width * chroma_height;
119

    
120
  bufsize = luma_pixels * 2 + luma_width * 3 +
121
    (chroma_pixels + chroma_width) * 4;
122

    
123
  if((s->iv_frame[0].the_buf =
124
    (s->iv_frame[0].the_buf_size == 0 ? av_malloc(bufsize) :
125
      av_realloc(s->iv_frame[0].the_buf, bufsize))) == NULL)
126
    return;
127
  s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width;
128
  s->iv_frame[0].y_h = s->iv_frame[1].y_h = luma_height;
129
  s->iv_frame[0].uv_w = s->iv_frame[1].uv_w = chroma_width;
130
  s->iv_frame[0].uv_h = s->iv_frame[1].uv_h = chroma_height;
131
  s->iv_frame[0].the_buf_size = bufsize;
132

    
133
  s->iv_frame[0].Ybuf = s->iv_frame[0].the_buf + luma_width;
134
  i = luma_pixels + luma_width * 2;
135
  s->iv_frame[1].Ybuf = s->iv_frame[0].the_buf + i;
136
  i += (luma_pixels + luma_width);
137
  s->iv_frame[0].Ubuf = s->iv_frame[0].the_buf + i;
138
  i += (chroma_pixels + chroma_width);
139
  s->iv_frame[1].Ubuf = s->iv_frame[0].the_buf + i;
140
  i += (chroma_pixels + chroma_width);
141
  s->iv_frame[0].Vbuf = s->iv_frame[0].the_buf + i;
142
  i += (chroma_pixels + chroma_width);
143
  s->iv_frame[1].Vbuf = s->iv_frame[0].the_buf + i;
144

    
145
  for(i = 1; i <= luma_width; i++)
146
    s->iv_frame[0].Ybuf[-i] = s->iv_frame[1].Ybuf[-i] =
147
      s->iv_frame[0].Ubuf[-i] = 0x80;
148

    
149
  for(i = 1; i <= chroma_width; i++) {
150
    s->iv_frame[1].Ubuf[-i] = 0x80;
151
    s->iv_frame[0].Vbuf[-i] = 0x80;
152
    s->iv_frame[1].Vbuf[-i] = 0x80;
153
    s->iv_frame[1].Vbuf[chroma_pixels+i-1] = 0x80;
154
  }
155
}
156

    
157
/* ---------------------------------------------------------------------- */
158
static void iv_free_func(Indeo3DecodeContext *s)
159
{
160
  int i;
161

    
162
  for(i = 0 ; i < 2 ; i++) {
163
    if(s->iv_frame[i].the_buf != NULL)
164
      av_free(s->iv_frame[i].the_buf);
165
    s->iv_frame[i].Ybuf = s->iv_frame[i].Ubuf =
166
      s->iv_frame[i].Vbuf = NULL;
167
    s->iv_frame[i].the_buf = NULL;
168
    s->iv_frame[i].the_buf_size = 0;
169
    s->iv_frame[i].y_w = s->iv_frame[i].y_h = 0;
170
    s->iv_frame[i].uv_w = s->iv_frame[i].uv_h = 0;
171
  }
172

    
173
  av_free(s->ModPred);
174
  av_free(s->corrector_type);
175
}
176

    
177
/* ---------------------------------------------------------------------- */
178
static unsigned long iv_decode_frame(Indeo3DecodeContext *s,
179
                                     unsigned char *buf, int buf_size)
180
{
181
  unsigned int hdr_width, hdr_height,
182
    chroma_width, chroma_height;
183
  unsigned long fflags1, fflags2, fflags3, offs1, offs2, offs3, offs;
184
  unsigned char *hdr_pos, *buf_pos;
185

    
186
  buf_pos = buf;
187
  buf_pos += 18;
188

    
189
  fflags1 = le2me_16(*(uint16_t *)buf_pos);
190
  buf_pos += 2;
191
  fflags3 = le2me_32(*(uint32_t *)buf_pos);
192
  buf_pos += 4;
193
  fflags2 = *buf_pos++;
194
  buf_pos += 3;
195
  hdr_height = le2me_16(*(uint16_t *)buf_pos);
196
  buf_pos += 2;
197
  hdr_width = le2me_16(*(uint16_t *)buf_pos);
198

    
199
  if(avcodec_check_dimensions(NULL, hdr_width, hdr_height))
200
      return -1;
201

    
202
  buf_pos += 2;
203
  chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
204
  chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;
205
  offs1 = le2me_32(*(uint32_t *)buf_pos);
206
  buf_pos += 4;
207
  offs2 = le2me_32(*(uint32_t *)buf_pos);
208
  buf_pos += 4;
209
  offs3 = le2me_32(*(uint32_t *)buf_pos);
210
  buf_pos += 8;
211
  hdr_pos = buf_pos;
212
  if(fflags3 == 0x80) return 4;
213

    
214
  if(fflags1 & 0x200) {
215
    s->cur_frame = s->iv_frame + 1;
216
    s->ref_frame = s->iv_frame;
217
  } else {
218
    s->cur_frame = s->iv_frame;
219
    s->ref_frame = s->iv_frame + 1;
220
  }
221

    
222
  buf_pos = buf + 16 + offs1;
223
  offs = le2me_32(*(uint32_t *)buf_pos);
224
  buf_pos += 4;
225

    
226
  iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width,
227
    hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
228
    FFMIN(hdr_width, 160));
229

    
230
  if (!(s->avctx->flags & CODEC_FLAG_GRAY))
231
  {
232

    
233
  buf_pos = buf + 16 + offs2;
234
  offs = le2me_32(*(uint32_t *)buf_pos);
235
  buf_pos += 4;
236

    
237
  iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
238
    chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
239
    FFMIN(chroma_width, 40));
240

    
241
  buf_pos = buf + 16 + offs3;
242
  offs = le2me_32(*(uint32_t *)buf_pos);
243
  buf_pos += 4;
244

    
245
  iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
246
    chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
247
    FFMIN(chroma_width, 40));
248

    
249
  }
250

    
251
  return 8;
252
}
253

    
254
typedef struct {
255
  long xpos;
256
  long ypos;
257
  long width;
258
  long height;
259
  long split_flag;
260
  long split_direction;
261
  long usl7;
262
} ustr_t;
263

    
264
/* ---------------------------------------------------------------------- */
265

    
266
#define LV1_CHECK(buf1,rle_v3,lv1,lp2)  \
267
  if((lv1 & 0x80) != 0) {   \
268
    if(rle_v3 != 0)         \
269
      rle_v3 = 0;           \
270
    else {                  \
271
      rle_v3 = 1;           \
272
      buf1 -= 2;            \
273
    }                       \
274
  }                         \
275
  lp2 = 4;
276

    
277

    
278
#define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)  \
279
  if(rle_v3 == 0) {         \
280
    rle_v2 = *buf1;         \
281
    rle_v1 = 1;             \
282
    if(rle_v2 > 32) {       \
283
      rle_v2 -= 32;         \
284
      rle_v1 = 0;           \
285
    }                       \
286
    rle_v3 = 1;             \
287
  }                         \
288
  buf1--;
289

    
290

    
291
#define LP2_CHECK(buf1,rle_v3,lp2)  \
292
  if(lp2 == 0 && rle_v3 != 0)     \
293
    rle_v3 = 0;           \
294
  else {                  \
295
    buf1--;               \
296
    rle_v3 = 1;           \
297
  }
298

    
299

    
300
#define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
301
  rle_v2--;             \
302
  if(rle_v2 == 0) {     \
303
    rle_v3 = 0;         \
304
    buf1 += 2;          \
305
  }                     \
306
  lp2 = 4;
307

    
308
static void iv_Decode_Chunk(Indeo3DecodeContext *s,
309
  unsigned char *cur, unsigned char *ref, int width, int height,
310
  unsigned char *buf1, long fflags2, unsigned char *hdr,
311
  unsigned char *buf2, int min_width_160)
312
{
313
  unsigned char bit_buf;
314
  unsigned long bit_pos, lv, lv1, lv2;
315
  long *width_tbl, width_tbl_arr[10];
316
  signed char *ref_vectors;
317
  unsigned char *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
318
  uint32_t *cur_lp, *ref_lp;
319
  const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
320
  unsigned short *correction_type_sp[2];
321
  ustr_t strip_tbl[20], *strip;
322
  int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
323
    rle_v1, rle_v2, rle_v3;
324
  unsigned short res;
325

    
326
  bit_buf = 0;
327
  ref_vectors = NULL;
328

    
329
  width_tbl = width_tbl_arr + 1;
330
  i = (width < 0 ? width + 3 : width)/4;
331
  for(j = -1; j < 8; j++)
332
    width_tbl[j] = i * j;
333

    
334
  strip = strip_tbl;
335

    
336
  for(region_160_width = 0; region_160_width < (width - min_width_160); region_160_width += min_width_160);
337

    
338
  strip->ypos = strip->xpos = 0;
339
  for(strip->width = min_width_160; width > strip->width; strip->width *= 2);
340
  strip->height = height;
341
  strip->split_direction = 0;
342
  strip->split_flag = 0;
343
  strip->usl7 = 0;
344

    
345
  bit_pos = 0;
346

    
347
  rle_v1 = rle_v2 = rle_v3 = 0;
348

    
349
  while(strip >= strip_tbl) {
350
    if(bit_pos <= 0) {
351
      bit_pos = 8;
352
      bit_buf = *buf1++;
353
    }
354

    
355
    bit_pos -= 2;
356
    cmd = (bit_buf >> bit_pos) & 0x03;
357

    
358
    if(cmd == 0) {
359
      strip++;
360
      memcpy(strip, strip-1, sizeof(ustr_t));
361
      strip->split_flag = 1;
362
      strip->split_direction = 0;
363
      strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4);
364
      continue;
365
    } else if(cmd == 1) {
366
      strip++;
367
      memcpy(strip, strip-1, sizeof(ustr_t));
368
      strip->split_flag = 1;
369
      strip->split_direction = 1;
370
      strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4);
371
      continue;
372
    } else if(cmd == 2) {
373
      if(strip->usl7 == 0) {
374
        strip->usl7 = 1;
375
        ref_vectors = NULL;
376
        continue;
377
      }
378
    } else if(cmd == 3) {
379
      if(strip->usl7 == 0) {
380
        strip->usl7 = 1;
381
        ref_vectors = (signed char*)buf2 + (*buf1 * 2);
382
        buf1++;
383
        continue;
384
      }
385
    }
386

    
387
    cur_frm_pos = cur + width * strip->ypos + strip->xpos;
388

    
389
    if((blks_width = strip->width) < 0)
390
      blks_width += 3;
391
    blks_width >>= 2;
392
    blks_height = strip->height;
393

    
394
    if(ref_vectors != NULL) {
395
      ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +
396
        ref_vectors[1] + strip->xpos;
397
    } else
398
      ref_frm_pos = cur_frm_pos - width_tbl[4];
399

    
400
    if(cmd == 2) {
401
      if(bit_pos <= 0) {
402
        bit_pos = 8;
403
        bit_buf = *buf1++;
404
      }
405

    
406
      bit_pos -= 2;
407
      cmd = (bit_buf >> bit_pos) & 0x03;
408

    
409
      if(cmd == 0 || ref_vectors != NULL) {
410
        for(lp1 = 0; lp1 < blks_width; lp1++) {
411
          for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])
412
            ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
413
          cur_frm_pos += 4;
414
          ref_frm_pos += 4;
415
        }
416
      } else if(cmd != 1)
417
        return;
418
    } else {
419
      k = *buf1 >> 4;
420
      j = *buf1 & 0x0f;
421
      buf1++;
422
      lv = j + fflags2;
423

    
424
      if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {
425
        cp2 = s->ModPred + ((lv - 8) << 7);
426
        cp = ref_frm_pos;
427
        for(i = 0; i < blks_width << 2; i++) {
428
            int v = *cp >> 1;
429
            *(cp++) = cp2[v];
430
        }
431
      }
432

    
433
      if(k == 1 || k == 4) {
434
        lv = (hdr[j] & 0xf) + fflags2;
435
        correction_type_sp[0] = s->corrector_type + (lv << 8);
436
        correction_lp[0] = correction + (lv << 8);
437
        lv = (hdr[j] >> 4) + fflags2;
438
        correction_lp[1] = correction + (lv << 8);
439
        correction_type_sp[1] = s->corrector_type + (lv << 8);
440
      } else {
441
        correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
442
        correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
443
        correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
444
        correction_lp[0] = correction_lp[1] = correction + (lv << 8);
445
      }
446

    
447
      switch(k) {
448
        case 1:
449
        case 0:                    /********** CASE 0 **********/
450
          for( ; blks_height > 0; blks_height -= 4) {
451
            for(lp1 = 0; lp1 < blks_width; lp1++) {
452
              for(lp2 = 0; lp2 < 4; ) {
453
                k = *buf1++;
454
                cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];
455
                ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];
456

    
457
                switch(correction_type_sp[0][k]) {
458
                  case 0:
459
                    *cur_lp = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
460
                    lp2++;
461
                    break;
462
                  case 1:
463
                    res = ((le2me_16(((unsigned short *)(ref_lp))[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
464
                    ((unsigned short *)cur_lp)[0] = le2me_16(res);
465
                    res = ((le2me_16(((unsigned short *)(ref_lp))[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
466
                    ((unsigned short *)cur_lp)[1] = le2me_16(res);
467
                    buf1++;
468
                    lp2++;
469
                    break;
470
                  case 2:
471
                    if(lp2 == 0) {
472
                      for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
473
                        cur_lp[j] = ref_lp[j];
474
                      lp2 += 2;
475
                    }
476
                    break;
477
                  case 3:
478
                    if(lp2 < 2) {
479
                      for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
480
                        cur_lp[j] = ref_lp[j];
481
                      lp2 = 3;
482
                    }
483
                    break;
484
                  case 8:
485
                    if(lp2 == 0) {
486
                      RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
487

    
488
                      if(rle_v1 == 1 || ref_vectors != NULL) {
489
                        for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
490
                          cur_lp[j] = ref_lp[j];
491
                      }
492

    
493
                      RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
494
                      break;
495
                    } else {
496
                      rle_v1 = 1;
497
                      rle_v2 = *buf1 - 1;
498
                    }
499
                  case 5:
500
                      LP2_CHECK(buf1,rle_v3,lp2)
501
                  case 4:
502
                    for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
503
                      cur_lp[j] = ref_lp[j];
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
                  case 6:
515
                    if(ref_vectors != NULL) {
516
                      for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
517
                        cur_lp[j] = ref_lp[j];
518
                    }
519
                    lp2 = 4;
520
                    break;
521

    
522
                  case 9:
523
                    lv1 = *buf1++;
524
                    lv = (lv1 & 0x7F) << 1;
525
                    lv += (lv << 8);
526
                    lv += (lv << 16);
527
                    for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
528
                      cur_lp[j] = lv;
529

    
530
                    LV1_CHECK(buf1,rle_v3,lv1,lp2)
531
                    break;
532
                  default:
533
                    return;
534
                }
535
              }
536

    
537
              cur_frm_pos += 4;
538
              ref_frm_pos += 4;
539
            }
540

    
541
            cur_frm_pos += ((width - blks_width) * 4);
542
            ref_frm_pos += ((width - blks_width) * 4);
543
          }
544
          break;
545

    
546
        case 4:
547
        case 3:                    /********** CASE 3 **********/
548
          if(ref_vectors != NULL)
549
            return;
550
          flag1 = 1;
551

    
552
          for( ; blks_height > 0; blks_height -= 8) {
553
            for(lp1 = 0; lp1 < blks_width; lp1++) {
554
              for(lp2 = 0; lp2 < 4; ) {
555
                k = *buf1++;
556

    
557
                cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
558
                ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
559

    
560
                switch(correction_type_sp[lp2 & 0x01][k]) {
561
                  case 0:
562
                    cur_lp[width_tbl[1]] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
563
                    if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
564
                      cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
565
                    else
566
                      cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
567
                    lp2++;
568
                    break;
569

    
570
                  case 1:
571
                    res = ((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
572
                    ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
573
                    res = ((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
574
                    ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
575

    
576
                    if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
577
                      cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
578
                    else
579
                      cur_lp[0] = cur_lp[width_tbl[1]];
580
                    buf1++;
581
                    lp2++;
582
                    break;
583

    
584
                  case 2:
585
                    if(lp2 == 0) {
586
                      for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
587
                        cur_lp[j] = *ref_lp;
588
                      lp2 += 2;
589
                    }
590
                    break;
591

    
592
                  case 3:
593
                    if(lp2 < 2) {
594
                      for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
595
                        cur_lp[j] = *ref_lp;
596
                      lp2 = 3;
597
                    }
598
                    break;
599

    
600
                  case 6:
601
                    lp2 = 4;
602
                    break;
603

    
604
                  case 7:
605
                    if(rle_v3 != 0)
606
                      rle_v3 = 0;
607
                    else {
608
                      buf1--;
609
                      rle_v3 = 1;
610
                    }
611
                    lp2 = 4;
612
                    break;
613

    
614
                  case 8:
615
                    if(lp2 == 0) {
616
                      RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
617

    
618
                      if(rle_v1 == 1) {
619
                        for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
620
                          cur_lp[j] = ref_lp[j];
621
                      }
622

    
623
                      RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
624
                      break;
625
                    } else {
626
                      rle_v2 = (*buf1) - 1;
627
                      rle_v1 = 1;
628
                    }
629
                  case 5:
630
                      LP2_CHECK(buf1,rle_v3,lp2)
631
                  case 4:
632
                    for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
633
                      cur_lp[j] = *ref_lp;
634
                    lp2 = 4;
635
                    break;
636

    
637
                  case 9:
638
                    av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
639
                    lv1 = *buf1++;
640
                    lv = (lv1 & 0x7F) << 1;
641
                    lv += (lv << 8);
642
                    lv += (lv << 16);
643

    
644
                    for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
645
                      cur_lp[j] = lv;
646

    
647
                    LV1_CHECK(buf1,rle_v3,lv1,lp2)
648
                    break;
649

    
650
                  default:
651
                    return;
652
                }
653
              }
654

    
655
              cur_frm_pos += 4;
656
            }
657

    
658
            cur_frm_pos += (((width * 2) - blks_width) * 4);
659
            flag1 = 0;
660
          }
661
          break;
662

    
663
        case 10:                    /********** CASE 10 **********/
664
          if(ref_vectors == NULL) {
665
            flag1 = 1;
666

    
667
            for( ; blks_height > 0; blks_height -= 8) {
668
              for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
669
                for(lp2 = 0; lp2 < 4; ) {
670
                  k = *buf1++;
671
                  cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
672
                  ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
673
                  lv1 = ref_lp[0];
674
                  lv2 = ref_lp[1];
675
                  if(lp2 == 0 && flag1 != 0) {
676
#ifdef WORDS_BIGENDIAN
677
                    lv1 = lv1 & 0xFF00FF00;
678
                    lv1 = (lv1 >> 8) | lv1;
679
                    lv2 = lv2 & 0xFF00FF00;
680
                    lv2 = (lv2 >> 8) | lv2;
681
#else
682
                    lv1 = lv1 & 0x00FF00FF;
683
                    lv1 = (lv1 << 8) | lv1;
684
                    lv2 = lv2 & 0x00FF00FF;
685
                    lv2 = (lv2 << 8) | lv2;
686
#endif
687
                  }
688

    
689
                  switch(correction_type_sp[lp2 & 0x01][k]) {
690
                    case 0:
691
                      cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
692
                      cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1);
693
                      if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
694
                        cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
695
                        cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
696
                      } else {
697
                        cur_lp[0] = cur_lp[width_tbl[1]];
698
                        cur_lp[1] = cur_lp[width_tbl[1]+1];
699
                      }
700
                      lp2++;
701
                      break;
702

    
703
                    case 1:
704
                      cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1]) << 1);
705
                      cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
706
                      if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
707
                        cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
708
                        cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
709
                      } else {
710
                        cur_lp[0] = cur_lp[width_tbl[1]];
711
                        cur_lp[1] = cur_lp[width_tbl[1]+1];
712
                      }
713
                      buf1++;
714
                      lp2++;
715
                      break;
716

    
717
                    case 2:
718
                      if(lp2 == 0) {
719
                        if(flag1 != 0) {
720
                          for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
721
                            cur_lp[j] = lv1;
722
                            cur_lp[j+1] = lv2;
723
                          }
724
                          cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
725
                          cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
726
                        } else {
727
                          for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
728
                            cur_lp[j] = lv1;
729
                            cur_lp[j+1] = lv2;
730
                          }
731
                        }
732
                        lp2 += 2;
733
                      }
734
                      break;
735

    
736
                    case 3:
737
                      if(lp2 < 2) {
738
                        if(lp2 == 0 && flag1 != 0) {
739
                          for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
740
                            cur_lp[j] = lv1;
741
                            cur_lp[j+1] = lv2;
742
                          }
743
                          cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
744
                          cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
745
                        } else {
746
                          for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
747
                            cur_lp[j] = lv1;
748
                            cur_lp[j+1] = lv2;
749
                          }
750
                        }
751
                        lp2 = 3;
752
                      }
753
                      break;
754

    
755
                    case 8:
756
                      if(lp2 == 0) {
757
                        RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
758
                        if(rle_v1 == 1) {
759
                          if(flag1 != 0) {
760
                            for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
761
                              cur_lp[j] = lv1;
762
                              cur_lp[j+1] = lv2;
763
                            }
764
                            cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
765
                            cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
766
                          } else {
767
                            for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
768
                              cur_lp[j] = lv1;
769
                              cur_lp[j+1] = lv2;
770
                            }
771
                          }
772
                        }
773
                        RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
774
                        break;
775
                      } else {
776
                        rle_v1 = 1;
777
                        rle_v2 = (*buf1) - 1;
778
                      }
779
                    case 5:
780
                        LP2_CHECK(buf1,rle_v3,lp2)
781
                    case 4:
782
                      if(lp2 == 0 && flag1 != 0) {
783
                        for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
784
                          cur_lp[j] = lv1;
785
                          cur_lp[j+1] = lv2;
786
                        }
787
                        cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
788
                        cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
789
                      } else {
790
                        for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
791
                          cur_lp[j] = lv1;
792
                          cur_lp[j+1] = lv2;
793
                        }
794
                      }
795
                      lp2 = 4;
796
                      break;
797

    
798
                    case 6:
799
                      lp2 = 4;
800
                      break;
801

    
802
                    case 7:
803
                      if(lp2 == 0) {
804
                        if(rle_v3 != 0)
805
                          rle_v3 = 0;
806
                        else {
807
                          buf1--;
808
                          rle_v3 = 1;
809
                        }
810
                        lp2 = 4;
811
                      }
812
                      break;
813

    
814
                    case 9:
815
                      av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
816
                      lv1 = *buf1;
817
                      lv = (lv1 & 0x7F) << 1;
818
                      lv += (lv << 8);
819
                      lv += (lv << 16);
820
                      for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
821
                        cur_lp[j] = lv;
822
                      LV1_CHECK(buf1,rle_v3,lv1,lp2)
823
                      break;
824

    
825
                    default:
826
                      return;
827
                  }
828
                }
829

    
830
                cur_frm_pos += 8;
831
              }
832

    
833
              cur_frm_pos += (((width * 2) - blks_width) * 4);
834
              flag1 = 0;
835
            }
836
          } else {
837
            for( ; blks_height > 0; blks_height -= 8) {
838
              for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
839
                for(lp2 = 0; lp2 < 4; ) {
840
                  k = *buf1++;
841
                  cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
842
                  ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
843

    
844
                  switch(correction_type_sp[lp2 & 0x01][k]) {
845
                    case 0:
846
                      lv1 = correctionloworder_lp[lp2 & 0x01][k];
847
                      lv2 = correctionhighorder_lp[lp2 & 0x01][k];
848
                      cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
849
                      cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
850
                      cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
851
                      cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
852
                      lp2++;
853
                      break;
854

    
855
                    case 1:
856
                      lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];
857
                      lv2 = correctionloworder_lp[lp2 & 0x01][k];
858
                      cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
859
                      cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
860
                      cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
861
                      cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
862
                      lp2++;
863
                      break;
864

    
865
                    case 2:
866
                      if(lp2 == 0) {
867
                        for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
868
                          cur_lp[j] = ref_lp[j];
869
                          cur_lp[j+1] = ref_lp[j+1];
870
                        }
871
                        lp2 += 2;
872
                      }
873
                      break;
874

    
875
                    case 3:
876
                      if(lp2 < 2) {
877
                        for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
878
                          cur_lp[j] = ref_lp[j];
879
                          cur_lp[j+1] = ref_lp[j+1];
880
                        }
881
                        lp2 = 3;
882
                      }
883
                      break;
884

    
885
                    case 8:
886
                      if(lp2 == 0) {
887
                        RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
888
                        for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
889
                          ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
890
                          ((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1];
891
                        }
892
                        RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
893
                        break;
894
                      } else {
895
                        rle_v1 = 1;
896
                        rle_v2 = (*buf1) - 1;
897
                      }
898
                    case 5:
899
                    case 7:
900
                        LP2_CHECK(buf1,rle_v3,lp2)
901
                    case 6:
902
                    case 4:
903
                      for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
904
                        cur_lp[j] = ref_lp[j];
905
                        cur_lp[j+1] = ref_lp[j+1];
906
                      }
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 < 8; i++, j += width_tbl[1])
917
                        ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv;
918
                      LV1_CHECK(buf1,rle_v3,lv1,lp2)
919
                      break;
920

    
921
                    default:
922
                      return;
923
                  }
924
                }
925

    
926
                cur_frm_pos += 8;
927
                ref_frm_pos += 8;
928
              }
929

    
930
              cur_frm_pos += (((width * 2) - blks_width) * 4);
931
              ref_frm_pos += (((width * 2) - blks_width) * 4);
932
            }
933
          }
934
          break;
935

    
936
        case 11:                    /********** CASE 11 **********/
937
          if(ref_vectors == NULL)
938
            return;
939

    
940
          for( ; blks_height > 0; blks_height -= 8) {
941
            for(lp1 = 0; lp1 < blks_width; lp1++) {
942
              for(lp2 = 0; lp2 < 4; ) {
943
                k = *buf1++;
944
                cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
945
                ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
946

    
947
                switch(correction_type_sp[lp2 & 0x01][k]) {
948
                  case 0:
949
                    cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
950
                    cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
951
                    lp2++;
952
                    break;
953

    
954
                  case 1:
955
                    lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);
956
                    lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);
957
                    res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + lv1) << 1);
958
                    ((unsigned short *)cur_lp)[0] = le2me_16(res);
959
                    res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + lv2) << 1);
960
                    ((unsigned short *)cur_lp)[1] = le2me_16(res);
961
                    res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]]) >> 1) + lv1) << 1);
962
                    ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
963
                    res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]+1]) >> 1) + lv2) << 1);
964
                    ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
965
                    lp2++;
966
                    break;
967

    
968
                  case 2:
969
                    if(lp2 == 0) {
970
                      for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
971
                        cur_lp[j] = ref_lp[j];
972
                      lp2 += 2;
973
                    }
974
                    break;
975

    
976
                  case 3:
977
                    if(lp2 < 2) {
978
                      for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
979
                        cur_lp[j] = ref_lp[j];
980
                      lp2 = 3;
981
                    }
982
                    break;
983

    
984
                  case 8:
985
                    if(lp2 == 0) {
986
                      RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
987

    
988
                      for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
989
                        cur_lp[j] = ref_lp[j];
990

    
991
                      RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
992
                      break;
993
                    } else {
994
                      rle_v1 = 1;
995
                      rle_v2 = (*buf1) - 1;
996
                    }
997
                  case 5:
998
                  case 7:
999
                      LP2_CHECK(buf1,rle_v3,lp2)
1000
                  case 4:
1001
                  case 6:
1002
                    for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
1003
                      cur_lp[j] = ref_lp[j];
1004
                    lp2 = 4;
1005
                    break;
1006

    
1007
                case 9:
1008
                  av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
1009
                  lv1 = *buf1++;
1010
                  lv = (lv1 & 0x7F) << 1;
1011
                  lv += (lv << 8);
1012
                  lv += (lv << 16);
1013
                  for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
1014
                    cur_lp[j] = lv;
1015
                  LV1_CHECK(buf1,rle_v3,lv1,lp2)
1016
                  break;
1017

    
1018
                  default:
1019
                    return;
1020
                }
1021
              }
1022

    
1023
              cur_frm_pos += 4;
1024
              ref_frm_pos += 4;
1025
            }
1026

    
1027
            cur_frm_pos += (((width * 2) - blks_width) * 4);
1028
            ref_frm_pos += (((width * 2) - blks_width) * 4);
1029
          }
1030
          break;
1031

    
1032
        default:
1033
          return;
1034
      }
1035
    }
1036

    
1037
    if(strip < strip_tbl)
1038
      return;
1039

    
1040
    for( ; strip >= strip_tbl; strip--) {
1041
      if(strip->split_flag != 0) {
1042
        strip->split_flag = 0;
1043
        strip->usl7 = (strip-1)->usl7;
1044

    
1045
        if(strip->split_direction) {
1046
          strip->xpos += strip->width;
1047
          strip->width = (strip-1)->width - strip->width;
1048
          if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)
1049
            strip->width = width - strip->xpos;
1050
        } else {
1051
          strip->ypos += strip->height;
1052
          strip->height = (strip-1)->height - strip->height;
1053
        }
1054
        break;
1055
      }
1056
    }
1057
  }
1058
}
1059

    
1060
static int indeo3_decode_init(AVCodecContext *avctx)
1061
{
1062
    Indeo3DecodeContext *s = avctx->priv_data;
1063

    
1064
    s->avctx = avctx;
1065
    s->width = avctx->width;
1066
    s->height = avctx->height;
1067
    avctx->pix_fmt = PIX_FMT_YUV410P;
1068

    
1069
    build_modpred(s);
1070
    iv_alloc_frames(s);
1071

    
1072
    return 0;
1073
}
1074

    
1075
static int indeo3_decode_frame(AVCodecContext *avctx,
1076
                               void *data, int *data_size,
1077
                               unsigned char *buf, int buf_size)
1078
{
1079
    Indeo3DecodeContext *s=avctx->priv_data;
1080
    unsigned char *src, *dest;
1081
    int y;
1082

    
1083
    iv_decode_frame(s, buf, buf_size);
1084

    
1085
    if(s->frame.data[0])
1086
        avctx->release_buffer(avctx, &s->frame);
1087

    
1088
    s->frame.reference = 0;
1089
    if(avctx->get_buffer(avctx, &s->frame) < 0) {
1090
        av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1091
        return -1;
1092
    }
1093

    
1094
    src = s->cur_frame->Ybuf;
1095
    dest = s->frame.data[0];
1096
    for (y = 0; y < s->height; y++) {
1097
      memcpy(dest, src, s->cur_frame->y_w);
1098
      src += s->cur_frame->y_w;
1099
      dest += s->frame.linesize[0];
1100
    }
1101

    
1102
    if (!(s->avctx->flags & CODEC_FLAG_GRAY))
1103
    {
1104
    src = s->cur_frame->Ubuf;
1105
    dest = s->frame.data[1];
1106
    for (y = 0; y < s->height / 4; y++) {
1107
      memcpy(dest, src, s->cur_frame->uv_w);
1108
      src += s->cur_frame->uv_w;
1109
      dest += s->frame.linesize[1];
1110
    }
1111

    
1112
    src = s->cur_frame->Vbuf;
1113
    dest = s->frame.data[2];
1114
    for (y = 0; y < s->height / 4; y++) {
1115
      memcpy(dest, src, s->cur_frame->uv_w);
1116
      src += s->cur_frame->uv_w;
1117
      dest += s->frame.linesize[2];
1118
    }
1119
    }
1120

    
1121
    *data_size=sizeof(AVFrame);
1122
    *(AVFrame*)data= s->frame;
1123

    
1124
    return buf_size;
1125
}
1126

    
1127
static int indeo3_decode_end(AVCodecContext *avctx)
1128
{
1129
    Indeo3DecodeContext *s = avctx->priv_data;
1130

    
1131
    iv_free_func(s);
1132

    
1133
    return 0;
1134
}
1135

    
1136
AVCodec indeo3_decoder = {
1137
    "indeo3",
1138
    CODEC_TYPE_VIDEO,
1139
    CODEC_ID_INDEO3,
1140
    sizeof(Indeo3DecodeContext),
1141
    indeo3_decode_init,
1142
    NULL,
1143
    indeo3_decode_end,
1144
    indeo3_decode_frame,
1145
    0,
1146
    NULL
1147
};