falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
8969 Commits
32 Branches
2.1GB
Tree: e62b3dd210
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from 'e62b3dd210'
${ noResults }
FFmpeg/libavcodec/indeo3.c

1150 lines
39KB
Raw Blame History 

  1. /*

  2.  * Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg

  3.  * written, produced, and directed by Alan Smithee

  4.  *

  5.  * This file is part of FFmpeg.

  6.  *

  7.  * FFmpeg is free software; you can redistribute it and/or

  8.  * modify it under the terms of the GNU Lesser General Public

  9.  * License as published by the Free Software Foundation; either

  10.  * version 2.1 of the License, or (at your option) any later version.

  11.  *

  12.  * FFmpeg is distributed in the hope that it will be useful,

  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  15.  * Lesser General Public License for more details.

  16.  *

  17.  * You should have received a copy of the GNU Lesser General Public

  18.  * License along with FFmpeg; if not, write to the Free Software

  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  20.  */

  21. 

  22. #include <stdio.h>

  23. #include <stdlib.h>

  24. #include <string.h>

  25. #include <unistd.h>

  26. 

  27. #include "common.h"

  28. #include "avcodec.h"

  29. #include "dsputil.h"

  30. #include "mpegvideo.h"

  31. 

  32. #include "indeo3data.h"

  33. 

  34. typedef struct

  35. {

  36.   unsigned char *Ybuf;

  37.   unsigned char *Ubuf;

  38.   unsigned char *Vbuf;

  39.   unsigned char *the_buf;

  40.   unsigned int the_buf_size;

  41.   unsigned short y_w, y_h;

  42.   unsigned short uv_w, uv_h;

  43. } YUVBufs;

  44. 

  45. typedef struct Indeo3DecodeContext {

  46.     AVCodecContext *avctx;

  47.     int width, height;

  48.     AVFrame frame;

  49. 

  50.     YUVBufs iv_frame[2];

  51.     YUVBufs *cur_frame;

  52.     YUVBufs *ref_frame;

  53. 

  54.     unsigned char *ModPred;

  55.     unsigned short *corrector_type;

  56. } Indeo3DecodeContext;

  57. 

  58. static int corrector_type_0[24] = {

  59.   195, 159, 133, 115, 101,  93,  87,  77,

  60.   195, 159, 133, 115, 101,  93,  87,  77,

  61.   128,  79,  79,  79,  79,  79,  79,  79

  62. };

  63. 

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

  65. 

  66. static void build_modpred(Indeo3DecodeContext *s)

  67. {

  68.   int i, j;

  69. 

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

  71. 

  72.   for (i=0; i < 128; ++i) {

  73.     s->ModPred[i+0*128] = (i > 126) ? 254 : 2*((i + 1) - ((i + 1) % 2));

  74.     s->ModPred[i+1*128] = (i == 7)  ?  20 : ((i == 119 || i == 120)

  75.                                  ? 236 : 2*((i + 2) - ((i + 1) % 3)));

  76.     s->ModPred[i+2*128] = (i > 125) ? 248 : 2*((i + 2) - ((i + 2) % 4));

  77.     s->ModPred[i+3*128] =                        2*((i + 1) - ((i - 3) % 5));

  78.     s->ModPred[i+4*128] = (i == 8)  ?  20 : 2*((i + 1) - ((i - 3) % 6));

  79.     s->ModPred[i+5*128] =                        2*((i + 4) - ((i + 3) % 7));

  80.     s->ModPred[i+6*128] = (i > 123) ? 240 : 2*((i + 4) - ((i + 4) % 8));

  81.     s->ModPred[i+7*128] =                        2*((i + 5) - ((i + 4) % 9));

  82.   }

  83. 

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

  85. 

  86.   for (i=0; i < 24; ++i) {

  87.     for (j=0; j < 256; ++j) {

  88.       s->corrector_type[i*256+j] = (j < corrector_type_0[i])

  89.                                 ? 1 : ((j < 248 || (i == 16 && j == 248))

  90.                                        ? 0 : corrector_type_2[j - 248]);

  91.     }

  92.   }

  93. }

  94. 

  95. static void iv_Decode_Chunk(Indeo3DecodeContext *s, unsigned char *cur,

  96.   unsigned char *ref, int width, int height, unsigned char *buf1,

  97.   long fflags2, unsigned char *hdr,

  98.   unsigned char *buf2, int min_width_160);

  99. 

  100. /* ---------------------------------------------------------------------- */

  101. static void iv_alloc_frames(Indeo3DecodeContext *s)

  102. {

  103.   int luma_width, luma_height, luma_pixels, chroma_width, chroma_height,

  104.       chroma_pixels, i;

  105.   unsigned int bufsize;

  106. 

  107.   luma_width   = (s->width  + 3) & (~3);

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

  109. 

  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.   chroma_width  = ((luma_width >> 2) + 3) & (~3);

  117.   chroma_height = ((luma_height>> 2) + 3) & (~3);

  118.   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. 

  200.   if(avcodec_check_dimensions(NULL, hdr_width, hdr_height))

  201.       return -1;

  202. 

  203.   buf_pos += 2;

  204.   chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;

  205.   chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;

  206.   offs1 = le2me_32(*(uint32_t *)buf_pos);

  207.   buf_pos += 4;

  208.   offs2 = le2me_32(*(uint32_t *)buf_pos);

  209.   buf_pos += 4;

  210.   offs3 = le2me_32(*(uint32_t *)buf_pos);

  211.   buf_pos += 8;

  212.   hdr_pos = buf_pos;

  213.   if(fflags3 == 0x80) return 4;

  214. 

  215.   if(fflags1 & 0x200) {

  216.     s->cur_frame = s->iv_frame + 1;

  217.     s->ref_frame = s->iv_frame;

  218.   } else {

  219.     s->cur_frame = s->iv_frame;

  220.     s->ref_frame = s->iv_frame + 1;

  221.   }

  222. 

  223.   buf_pos = buf + 16 + offs1;

  224.   offs = le2me_32(*(uint32_t *)buf_pos);

  225.   buf_pos += 4;

  226. 

  227.   iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width,

  228.     hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,

  229.     FFMIN(hdr_width, 160));

  230. 

  231.   if (!(s->avctx->flags & CODEC_FLAG_GRAY))

  232.   {

  233. 

  234.   buf_pos = buf + 16 + offs2;

  235.   offs = le2me_32(*(uint32_t *)buf_pos);

  236.   buf_pos += 4;

  237. 

  238.   iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,

  239.     chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,

  240.     FFMIN(chroma_width, 40));

  241. 

  242.   buf_pos = buf + 16 + offs3;

  243.   offs = le2me_32(*(uint32_t *)buf_pos);

  244.   buf_pos += 4;

  245. 

  246.   iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,

  247.     chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,

  248.     FFMIN(chroma_width, 40));

  249. 

  250.   }

  251. 

  252.   return 8;

  253. }

  254. 

  255. typedef struct {

  256.   long xpos;

  257.   long ypos;

  258.   long width;

  259.   long height;

  260.   long split_flag;

  261.   long split_direction;

  262.   long usl7;

  263. } ustr_t;

  264. 

  265. /* ---------------------------------------------------------------------- */

  266. 

  267. #define LV1_CHECK(buf1,rle_v3,lv1,lp2)  \

  268.   if((lv1 & 0x80) != 0) {   \

  269.     if(rle_v3 != 0)         \

  270.       rle_v3 = 0;           \

  271.     else {                  \

  272.       rle_v3 = 1;           \

  273.       buf1 -= 2;            \

  274.     }                       \

  275.   }                         \

  276.   lp2 = 4;

  277. 

  278. 

  279. #define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)  \

  280.   if(rle_v3 == 0) {         \

  281.     rle_v2 = *buf1;         \

  282.     rle_v1 = 1;             \

  283.     if(rle_v2 > 32) {       \

  284.       rle_v2 -= 32;         \

  285.       rle_v1 = 0;           \

  286.     }                       \

  287.     rle_v3 = 1;             \

  288.   }                         \

  289.   buf1--;

  290. 

  291. 

  292. #define LP2_CHECK(buf1,rle_v3,lp2)  \

  293.   if(lp2 == 0 && rle_v3 != 0)     \

  294.     rle_v3 = 0;           \

  295.   else {                  \

  296.     buf1--;               \

  297.     rle_v3 = 1;           \

  298.   }

  299. 

  300. 

  301. #define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \

  302.   rle_v2--;             \

  303.   if(rle_v2 == 0) {     \

  304.     rle_v3 = 0;         \

  305.     buf1 += 2;          \

  306.   }                     \

  307.   lp2 = 4;

  308. 

  309. static void iv_Decode_Chunk(Indeo3DecodeContext *s,

  310.   unsigned char *cur, unsigned char *ref, int width, int height,

  311.   unsigned char *buf1, long fflags2, unsigned char *hdr,

  312.   unsigned char *buf2, int min_width_160)

  313. {

  314.   unsigned char bit_buf;

  315.   unsigned long bit_pos, lv, lv1, lv2;

  316.   long *width_tbl, width_tbl_arr[10];

  317.   signed char *ref_vectors;

  318.   unsigned char *cur_frm_pos, *ref_frm_pos, *cp, *cp2;

  319.   uint32_t *cur_lp, *ref_lp;

  320.   const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];

  321.   unsigned short *correction_type_sp[2];

  322.   ustr_t strip_tbl[20], *strip;

  323.   int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,

  324.     rle_v1, rle_v2, rle_v3;

  325.   unsigned short res;

  326. 

  327.   bit_buf = 0;

  328.   ref_vectors = NULL;

  329. 

  330.   width_tbl = width_tbl_arr + 1;

  331.   i = (width < 0 ? width + 3 : width)/4;

  332.   for(j = -1; j < 8; j++)

  333.     width_tbl[j] = i * j;

  334. 

  335.   strip = strip_tbl;

  336. 

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

  338. 

  339.   strip->ypos = strip->xpos = 0;

  340.   for(strip->width = min_width_160; width > strip->width; strip->width *= 2);

  341.   strip->height = height;

  342.   strip->split_direction = 0;

  343.   strip->split_flag = 0;

  344.   strip->usl7 = 0;

  345. 

  346.   bit_pos = 0;

  347. 

  348.   rle_v1 = rle_v2 = rle_v3 = 0;

  349. 

  350.   while(strip >= strip_tbl) {

  351.     if(bit_pos <= 0) {

  352.       bit_pos = 8;

  353.       bit_buf = *buf1++;

  354.     }

  355. 

  356.     bit_pos -= 2;

  357.     cmd = (bit_buf >> bit_pos) & 0x03;

  358. 

  359.     if(cmd == 0) {

  360.       strip++;

  361.       memcpy(strip, strip-1, sizeof(ustr_t));

  362.       strip->split_flag = 1;

  363.       strip->split_direction = 0;

  364.       strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4);

  365.       continue;

  366.     } else if(cmd == 1) {

  367.       strip++;

  368.       memcpy(strip, strip-1, sizeof(ustr_t));

  369.       strip->split_flag = 1;

  370.       strip->split_direction = 1;

  371.       strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4);

  372.       continue;

  373.     } else if(cmd == 2) {

  374.       if(strip->usl7 == 0) {

  375.         strip->usl7 = 1;

  376.         ref_vectors = NULL;

  377.         continue;

  378.       }

  379.     } else if(cmd == 3) {

  380.       if(strip->usl7 == 0) {

  381.         strip->usl7 = 1;

  382.         ref_vectors = (signed char*)buf2 + (*buf1 * 2);

  383.         buf1++;

  384.         continue;

  385.       }

  386.     }

  387. 

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

  389. 

  390.     if((blks_width = strip->width) < 0)

  391.       blks_width += 3;

  392.     blks_width >>= 2;

  393.     blks_height = strip->height;

  394. 

  395.     if(ref_vectors != NULL) {

  396.       ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +

  397.         ref_vectors[1] + strip->xpos;

  398.     } else

  399.       ref_frm_pos = cur_frm_pos - width_tbl[4];

  400. 

  401.     if(cmd == 2) {

  402.       if(bit_pos <= 0) {

  403.         bit_pos = 8;

  404.         bit_buf = *buf1++;

  405.       }

  406. 

  407.       bit_pos -= 2;

  408.       cmd = (bit_buf >> bit_pos) & 0x03;

  409. 

  410.       if(cmd == 0 || ref_vectors != NULL) {

  411.         for(lp1 = 0; lp1 < blks_width; lp1++) {

  412.           for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])

  413.             ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];

  414.           cur_frm_pos += 4;

  415.           ref_frm_pos += 4;

  416.         }

  417.       } else if(cmd != 1)

  418.         return;

  419.     } else {

  420.       k = *buf1 >> 4;

  421.       j = *buf1 & 0x0f;

  422.       buf1++;

  423.       lv = j + fflags2;

  424. 

  425.       if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {

  426.         cp2 = s->ModPred + ((lv - 8) << 7);

  427.         cp = ref_frm_pos;

  428.         for(i = 0; i < blks_width << 2; i++) {

  429.             int v = *cp >> 1;

  430.             *(cp++) = cp2[v];

  431.         }

  432.       }

  433. 

  434.       if(k == 1 || k == 4) {

  435.         lv = (hdr[j] & 0xf) + fflags2;

  436.         correction_type_sp[0] = s->corrector_type + (lv << 8);

  437.         correction_lp[0] = correction + (lv << 8);

  438.         lv = (hdr[j] >> 4) + fflags2;

  439.         correction_lp[1] = correction + (lv << 8);

  440.         correction_type_sp[1] = s->corrector_type + (lv << 8);

  441.       } else {

  442.         correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);

  443.         correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);

  444.         correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);

  445.         correction_lp[0] = correction_lp[1] = correction + (lv << 8);

  446.       }

  447. 

  448.       switch(k) {

  449.         case 1:

  450.         case 0:                    /********** CASE 0 **********/

  451.           for( ; blks_height > 0; blks_height -= 4) {

  452.             for(lp1 = 0; lp1 < blks_width; lp1++) {

  453.               for(lp2 = 0; lp2 < 4; ) {

  454.                 k = *buf1++;

  455.                 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];

  456.                 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];

  457. 

  458.                 switch(correction_type_sp[0][k]) {

  459.                   case 0:

  460.                     *cur_lp = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);

  461.                     lp2++;

  462.                     break;

  463.                   case 1:

  464.                     res = ((le2me_16(((unsigned short *)(ref_lp))[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;

  465.                     ((unsigned short *)cur_lp)[0] = le2me_16(res);

  466.                     res = ((le2me_16(((unsigned short *)(ref_lp))[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;

  467.                     ((unsigned short *)cur_lp)[1] = le2me_16(res);

  468.                     buf1++;

  469.                     lp2++;

  470.                     break;

  471.                   case 2:

  472.                     if(lp2 == 0) {

  473.                       for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])

  474.                         cur_lp[j] = ref_lp[j];

  475.                       lp2 += 2;

  476.                     }

  477.                     break;

  478.                   case 3:

  479.                     if(lp2 < 2) {

  480.                       for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])

  481.                         cur_lp[j] = ref_lp[j];

  482.                       lp2 = 3;

  483.                     }

  484.                     break;

  485.                   case 8:

  486.                     if(lp2 == 0) {

  487.                       RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)

  488. 

  489.                       if(rle_v1 == 1 || ref_vectors != NULL) {

  490.                         for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])

  491.                           cur_lp[j] = ref_lp[j];

  492.                       }

  493. 

  494.                       RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)

  495.                       break;

  496.                     } else {

  497.                       rle_v1 = 1;

  498.                       rle_v2 = *buf1 - 1;

  499.                     }

  500.                   case 5:

  501.                       LP2_CHECK(buf1,rle_v3,lp2)

  502.                   case 4:

  503.                     for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])

  504.                       cur_lp[j] = ref_lp[j];

  505.                     lp2 = 4;

  506.                     break;

  507. 

  508.                   case 7:

  509.                     if(rle_v3 != 0)

  510.                       rle_v3 = 0;

  511.                     else {

  512.                       buf1--;

  513.                       rle_v3 = 1;

  514.                     }

  515.                   case 6:

  516.                     if(ref_vectors != NULL) {

  517.                       for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])

  518.                         cur_lp[j] = ref_lp[j];

  519.                     }

  520.                     lp2 = 4;

  521.                     break;

  522. 

  523.                   case 9:

  524.                     lv1 = *buf1++;

  525.                     lv = (lv1 & 0x7F) << 1;

  526.                     lv += (lv << 8);

  527.                     lv += (lv << 16);

  528.                     for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])

  529.                       cur_lp[j] = lv;

  530. 

  531.                     LV1_CHECK(buf1,rle_v3,lv1,lp2)

  532.                     break;

  533.                   default:

  534.                     return;

  535.                 }

  536.               }

  537. 

  538.               cur_frm_pos += 4;

  539.               ref_frm_pos += 4;

  540.             }

  541. 

  542.             cur_frm_pos += ((width - blks_width) * 4);

  543.             ref_frm_pos += ((width - blks_width) * 4);

  544.           }

  545.           break;

  546. 

  547.         case 4:

  548.         case 3:                    /********** CASE 3 **********/

  549.           if(ref_vectors != NULL)

  550.             return;

  551.           flag1 = 1;

  552. 

  553.           for( ; blks_height > 0; blks_height -= 8) {

  554.             for(lp1 = 0; lp1 < blks_width; lp1++) {

  555.               for(lp2 = 0; lp2 < 4; ) {

  556.                 k = *buf1++;

  557. 

  558.                 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];

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

  560. 

  561.                 switch(correction_type_sp[lp2 & 0x01][k]) {

  562.                   case 0:

  563.                     cur_lp[width_tbl[1]] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);

  564.                     if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)

  565.                       cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;

  566.                     else

  567.                       cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);

  568.                     lp2++;

  569.                     break;

  570. 

  571.                   case 1:

  572.                     res = ((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;

  573.                     ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);

  574.                     res = ((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;

  575.                     ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);

  576. 

  577.                     if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)

  578.                       cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;

  579.                     else

  580.                       cur_lp[0] = cur_lp[width_tbl[1]];

  581.                     buf1++;

  582.                     lp2++;

  583.                     break;

  584. 

  585.                   case 2:

  586.                     if(lp2 == 0) {

  587.                       for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])

  588.                         cur_lp[j] = *ref_lp;

  589.                       lp2 += 2;

  590.                     }

  591.                     break;

  592. 

  593.                   case 3:

  594.                     if(lp2 < 2) {

  595.                       for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])

  596.                         cur_lp[j] = *ref_lp;

  597.                       lp2 = 3;

  598.                     }

  599.                     break;

  600. 

  601.                   case 6:

  602.                     lp2 = 4;

  603.                     break;

  604. 

  605.                   case 7:

  606.                     if(rle_v3 != 0)

  607.                       rle_v3 = 0;

  608.                     else {

  609.                       buf1--;

  610.                       rle_v3 = 1;

  611.                     }

  612.                     lp2 = 4;

  613.                     break;

  614. 

  615.                   case 8:

  616.                     if(lp2 == 0) {

  617.                       RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)

  618. 

  619.                       if(rle_v1 == 1) {

  620.                         for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])

  621.                           cur_lp[j] = ref_lp[j];

  622.                       }

  623. 

  624.                       RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)

  625.                       break;

  626.                     } else {

  627.                       rle_v2 = (*buf1) - 1;

  628.                       rle_v1 = 1;

  629.                     }

  630.                   case 5:

  631.                       LP2_CHECK(buf1,rle_v3,lp2)

  632.                   case 4:

  633.                     for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])

  634.                       cur_lp[j] = *ref_lp;

  635.                     lp2 = 4;

  636.                     break;

  637. 

  638.                   case 9:

  639.                     av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");

  640.                     lv1 = *buf1++;

  641.                     lv = (lv1 & 0x7F) << 1;

  642.                     lv += (lv << 8);

  643.                     lv += (lv << 16);

  644. 

  645.                     for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])

  646.                       cur_lp[j] = lv;

  647. 

  648.                     LV1_CHECK(buf1,rle_v3,lv1,lp2)

  649.                     break;

  650. 

  651.                   default:

  652.                     return;

  653.                 }

  654.               }

  655. 

  656.               cur_frm_pos += 4;

  657.             }

  658. 

  659.             cur_frm_pos += (((width * 2) - blks_width) * 4);

  660.             flag1 = 0;

  661.           }

  662.           break;

  663. 

  664.         case 10:                    /********** CASE 10 **********/

  665.           if(ref_vectors == NULL) {

  666.             flag1 = 1;

  667. 

  668.             for( ; blks_height > 0; blks_height -= 8) {

  669.               for(lp1 = 0; lp1 < blks_width; lp1 += 2) {

  670.                 for(lp2 = 0; lp2 < 4; ) {

  671.                   k = *buf1++;

  672.                   cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];

  673.                   ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];

  674.                   lv1 = ref_lp[0];

  675.                   lv2 = ref_lp[1];

  676.                   if(lp2 == 0 && flag1 != 0) {

  677. #ifdef WORDS_BIGENDIAN

  678.                     lv1 = lv1 & 0xFF00FF00;

  679.                     lv1 = (lv1 >> 8) | lv1;

  680.                     lv2 = lv2 & 0xFF00FF00;

  681.                     lv2 = (lv2 >> 8) | lv2;

  682. #else

  683.                     lv1 = lv1 & 0x00FF00FF;

  684.                     lv1 = (lv1 << 8) | lv1;

  685.                     lv2 = lv2 & 0x00FF00FF;

  686.                     lv2 = (lv2 << 8) | lv2;

  687. #endif

  688.                   }

  689. 

  690.                   switch(correction_type_sp[lp2 & 0x01][k]) {

  691.                     case 0:

  692.                       cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);

  693.                       cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1);

  694.                       if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {

  695.                         cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;

  696.                         cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;

  697.                       } else {

  698.                         cur_lp[0] = cur_lp[width_tbl[1]];

  699.                         cur_lp[1] = cur_lp[width_tbl[1]+1];

  700.                       }

  701.                       lp2++;

  702.                       break;

  703. 

  704.                     case 1:

  705.                       cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1]) << 1);

  706.                       cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);

  707.                       if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {

  708.                         cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;

  709.                         cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;

  710.                       } else {

  711.                         cur_lp[0] = cur_lp[width_tbl[1]];

  712.                         cur_lp[1] = cur_lp[width_tbl[1]+1];

  713.                       }

  714.                       buf1++;

  715.                       lp2++;

  716.                       break;

  717. 

  718.                     case 2:

  719.                       if(lp2 == 0) {

  720.                         if(flag1 != 0) {

  721.                           for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {

  722.                             cur_lp[j] = lv1;

  723.                             cur_lp[j+1] = lv2;

  724.                           }

  725.                           cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;

  726.                           cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;

  727.                         } else {

  728.                           for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {

  729.                             cur_lp[j] = lv1;

  730.                             cur_lp[j+1] = lv2;

  731.                           }

  732.                         }

  733.                         lp2 += 2;

  734.                       }

  735.                       break;

  736. 

  737.                     case 3:

  738.                       if(lp2 < 2) {

  739.                         if(lp2 == 0 && flag1 != 0) {

  740.                           for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {

  741.                             cur_lp[j] = lv1;

  742.                             cur_lp[j+1] = lv2;

  743.                           }

  744.                           cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;

  745.                           cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;

  746.                         } else {

  747.                           for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {

  748.                             cur_lp[j] = lv1;

  749.                             cur_lp[j+1] = lv2;

  750.                           }

  751.                         }

  752.                         lp2 = 3;

  753.                       }

  754.                       break;

  755. 

  756.                     case 8:

  757.                       if(lp2 == 0) {

  758.                         RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)

  759.                         if(rle_v1 == 1) {

  760.                           if(flag1 != 0) {

  761.                             for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {

  762.                               cur_lp[j] = lv1;

  763.                               cur_lp[j+1] = lv2;

  764.                             }

  765.                             cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;

  766.                             cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;

  767.                           } else {

  768.                             for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {

  769.                               cur_lp[j] = lv1;

  770.                               cur_lp[j+1] = lv2;

  771.                             }

  772.                           }

  773.                         }

  774.                         RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)

  775.                         break;

  776.                       } else {

  777.                         rle_v1 = 1;

  778.                         rle_v2 = (*buf1) - 1;

  779.                       }

  780.                     case 5:

  781.                         LP2_CHECK(buf1,rle_v3,lp2)

  782.                     case 4:

  783.                       if(lp2 == 0 && flag1 != 0) {

  784.                         for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {

  785.                           cur_lp[j] = lv1;

  786.                           cur_lp[j+1] = lv2;

  787.                         }

  788.                         cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;

  789.                         cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;

  790.                       } else {

  791.                         for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {

  792.                           cur_lp[j] = lv1;

  793.                           cur_lp[j+1] = lv2;

  794.                         }

  795.                       }

  796.                       lp2 = 4;

  797.                       break;

  798. 

  799.                     case 6:

  800.                       lp2 = 4;

  801.                       break;

  802. 

  803.                     case 7:

  804.                       if(lp2 == 0) {

  805.                         if(rle_v3 != 0)

  806.                           rle_v3 = 0;

  807.                         else {

  808.                           buf1--;

  809.                           rle_v3 = 1;

  810.                         }

  811.                         lp2 = 4;

  812.                       }

  813.                       break;

  814. 

  815.                     case 9:

  816.                       av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");

  817.                       lv1 = *buf1;

  818.                       lv = (lv1 & 0x7F) << 1;

  819.                       lv += (lv << 8);

  820.                       lv += (lv << 16);

  821.                       for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])

  822.                         cur_lp[j] = lv;

  823.                       LV1_CHECK(buf1,rle_v3,lv1,lp2)

  824.                       break;

  825. 

  826.                     default:

  827.                       return;

  828.                   }

  829.                 }

  830. 

  831.                 cur_frm_pos += 8;

  832.               }

  833. 

  834.               cur_frm_pos += (((width * 2) - blks_width) * 4);

  835.               flag1 = 0;

  836.             }

  837.           } else {

  838.             for( ; blks_height > 0; blks_height -= 8) {

  839.               for(lp1 = 0; lp1 < blks_width; lp1 += 2) {

  840.                 for(lp2 = 0; lp2 < 4; ) {

  841.                   k = *buf1++;

  842.                   cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];

  843.                   ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];

  844. 

  845.                   switch(correction_type_sp[lp2 & 0x01][k]) {

  846.                     case 0:

  847.                       lv1 = correctionloworder_lp[lp2 & 0x01][k];

  848.                       lv2 = correctionhighorder_lp[lp2 & 0x01][k];

  849.                       cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);

  850.                       cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);

  851.                       cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);

  852.                       cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);

  853.                       lp2++;

  854.                       break;

  855. 

  856.                     case 1:

  857.                       lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];

  858.                       lv2 = correctionloworder_lp[lp2 & 0x01][k];

  859.                       cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);

  860.                       cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);

  861.                       cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);

  862.                       cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);

  863.                       lp2++;

  864.                       break;

  865. 

  866.                     case 2:

  867.                       if(lp2 == 0) {

  868.                         for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {

  869.                           cur_lp[j] = ref_lp[j];

  870.                           cur_lp[j+1] = ref_lp[j+1];

  871.                         }

  872.                         lp2 += 2;

  873.                       }

  874.                       break;

  875. 

  876.                     case 3:

  877.                       if(lp2 < 2) {

  878.                         for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {

  879.                           cur_lp[j] = ref_lp[j];

  880.                           cur_lp[j+1] = ref_lp[j+1];

  881.                         }

  882.                         lp2 = 3;

  883.                       }

  884.                       break;

  885. 

  886.                     case 8:

  887.                       if(lp2 == 0) {

  888.                         RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)

  889.                         for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {

  890.                           ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];

  891.                           ((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1];

  892.                         }

  893.                         RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)

  894.                         break;

  895.                       } else {

  896.                         rle_v1 = 1;

  897.                         rle_v2 = (*buf1) - 1;

  898.                       }

  899.                     case 5:

  900.                     case 7:

  901.                         LP2_CHECK(buf1,rle_v3,lp2)

  902.                     case 6:

  903.                     case 4:

  904.                       for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {

  905.                         cur_lp[j] = ref_lp[j];

  906.                         cur_lp[j+1] = ref_lp[j+1];

  907.                       }

  908.                       lp2 = 4;

  909.                       break;

  910. 

  911.                     case 9:

  912.                       av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");

  913.                       lv1 = *buf1;

  914.                       lv = (lv1 & 0x7F) << 1;

  915.                       lv += (lv << 8);

  916.                       lv += (lv << 16);

  917.                       for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])

  918.                         ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv;

  919.                       LV1_CHECK(buf1,rle_v3,lv1,lp2)

  920.                       break;

  921. 

  922.                     default:

  923.                       return;

  924.                   }

  925.                 }

  926. 

  927.                 cur_frm_pos += 8;

  928.                 ref_frm_pos += 8;

  929.               }

  930. 

  931.               cur_frm_pos += (((width * 2) - blks_width) * 4);

  932.               ref_frm_pos += (((width * 2) - blks_width) * 4);

  933.             }

  934.           }

  935.           break;

  936. 

  937.         case 11:                    /********** CASE 11 **********/

  938.           if(ref_vectors == NULL)

  939.             return;

  940. 

  941.           for( ; blks_height > 0; blks_height -= 8) {

  942.             for(lp1 = 0; lp1 < blks_width; lp1++) {

  943.               for(lp2 = 0; lp2 < 4; ) {

  944.                 k = *buf1++;

  945.                 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];

  946.                 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];

  947. 

  948.                 switch(correction_type_sp[lp2 & 0x01][k]) {

  949.                   case 0:

  950.                     cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);

  951.                     cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);

  952.                     lp2++;

  953.                     break;

  954. 

  955.                   case 1:

  956.                     lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);

  957.                     lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);

  958.                     res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + lv1) << 1);

  959.                     ((unsigned short *)cur_lp)[0] = le2me_16(res);

  960.                     res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + lv2) << 1);

  961.                     ((unsigned short *)cur_lp)[1] = le2me_16(res);

  962.                     res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]]) >> 1) + lv1) << 1);

  963.                     ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);

  964.                     res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]+1]) >> 1) + lv2) << 1);

  965.                     ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);

  966.                     lp2++;

  967.                     break;

  968. 

  969.                   case 2:

  970.                     if(lp2 == 0) {

  971.                       for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])

  972.                         cur_lp[j] = ref_lp[j];

  973.                       lp2 += 2;

  974.                     }

  975.                     break;

  976. 

  977.                   case 3:

  978.                     if(lp2 < 2) {

  979.                       for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])

  980.                         cur_lp[j] = ref_lp[j];

  981.                       lp2 = 3;

  982.                     }

  983.                     break;

  984. 

  985.                   case 8:

  986.                     if(lp2 == 0) {

  987.                       RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)

  988. 

  989.                       for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])

  990.                         cur_lp[j] = ref_lp[j];

  991. 

  992.                       RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)

  993.                       break;

  994.                     } else {

  995.                       rle_v1 = 1;

  996.                       rle_v2 = (*buf1) - 1;

  997.                     }

  998.                   case 5:

  999.                   case 7:

  1000.                       LP2_CHECK(buf1,rle_v3,lp2)

  1001.                   case 4:

  1002.                   case 6:

  1003.                     for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])

  1004.                       cur_lp[j] = ref_lp[j];

  1005.                     lp2 = 4;

  1006.                     break;

  1007. 

  1008.                 case 9:

  1009.                   av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");

  1010.                   lv1 = *buf1++;

  1011.                   lv = (lv1 & 0x7F) << 1;

  1012.                   lv += (lv << 8);

  1013.                   lv += (lv << 16);

  1014.                   for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])

  1015.                     cur_lp[j] = lv;

  1016.                   LV1_CHECK(buf1,rle_v3,lv1,lp2)

  1017.                   break;

  1018. 

  1019.                   default:

  1020.                     return;

  1021.                 }

  1022.               }

  1023. 

  1024.               cur_frm_pos += 4;

  1025.               ref_frm_pos += 4;

  1026.             }

  1027. 

  1028.             cur_frm_pos += (((width * 2) - blks_width) * 4);

  1029.             ref_frm_pos += (((width * 2) - blks_width) * 4);

  1030.           }

  1031.           break;

  1032. 

  1033.         default:

  1034.           return;

  1035.       }

  1036.     }

  1037. 

  1038.     if(strip < strip_tbl)

  1039.       return;

  1040. 

  1041.     for( ; strip >= strip_tbl; strip--) {

  1042.       if(strip->split_flag != 0) {

  1043.         strip->split_flag = 0;

  1044.         strip->usl7 = (strip-1)->usl7;

  1045. 

  1046.         if(strip->split_direction) {

  1047.           strip->xpos += strip->width;

  1048.           strip->width = (strip-1)->width - strip->width;

  1049.           if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)

  1050.             strip->width = width - strip->xpos;

  1051.         } else {

  1052.           strip->ypos += strip->height;

  1053.           strip->height = (strip-1)->height - strip->height;

  1054.         }

  1055.         break;

  1056.       }

  1057.     }

  1058.   }

  1059. }

  1060. 

  1061. static int indeo3_decode_init(AVCodecContext *avctx)

  1062. {

  1063.     Indeo3DecodeContext *s = avctx->priv_data;

  1064. 

  1065.     s->avctx = avctx;

  1066.     s->width = avctx->width;

  1067.     s->height = avctx->height;

  1068.     avctx->pix_fmt = PIX_FMT_YUV410P;

  1069.     avctx->has_b_frames = 0;

  1070. 

  1071.     build_modpred(s);

  1072.     iv_alloc_frames(s);

  1073. 

  1074.     return 0;

  1075. }

  1076. 

  1077. static int indeo3_decode_frame(AVCodecContext *avctx,

  1078.                                void *data, int *data_size,

  1079.                                unsigned char *buf, int buf_size)

  1080. {

  1081.     Indeo3DecodeContext *s=avctx->priv_data;

  1082.     unsigned char *src, *dest;

  1083.     int y;

  1084. 

  1085.     iv_decode_frame(s, buf, buf_size);

  1086. 

  1087.     if(s->frame.data[0])

  1088.         avctx->release_buffer(avctx, &s->frame);

  1089. 

  1090.     s->frame.reference = 0;

  1091.     if(avctx->get_buffer(avctx, &s->frame) < 0) {

  1092.         av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");

  1093.         return -1;

  1094.     }

  1095. 

  1096.     src = s->cur_frame->Ybuf;

  1097.     dest = s->frame.data[0];

  1098.     for (y = 0; y < s->height; y++) {

  1099.       memcpy(dest, src, s->cur_frame->y_w);

  1100.       src += s->cur_frame->y_w;

  1101.       dest += s->frame.linesize[0];

  1102.     }

  1103. 

  1104.     if (!(s->avctx->flags & CODEC_FLAG_GRAY))

  1105.     {

  1106.     src = s->cur_frame->Ubuf;

  1107.     dest = s->frame.data[1];

  1108.     for (y = 0; y < s->height / 4; y++) {

  1109.       memcpy(dest, src, s->cur_frame->uv_w);

  1110.       src += s->cur_frame->uv_w;

  1111.       dest += s->frame.linesize[1];

  1112.     }

  1113. 

  1114.     src = s->cur_frame->Vbuf;

  1115.     dest = s->frame.data[2];

  1116.     for (y = 0; y < s->height / 4; y++) {

  1117.       memcpy(dest, src, s->cur_frame->uv_w);

  1118.       src += s->cur_frame->uv_w;

  1119.       dest += s->frame.linesize[2];

  1120.     }

  1121.     }

  1122. 

  1123.     *data_size=sizeof(AVFrame);

  1124.     *(AVFrame*)data= s->frame;

  1125. 

  1126.     return buf_size;

  1127. }

  1128. 

  1129. static int indeo3_decode_end(AVCodecContext *avctx)

  1130. {

  1131.     Indeo3DecodeContext *s = avctx->priv_data;

  1132. 

  1133.     iv_free_func(s);

  1134. 

  1135.     return 0;

  1136. }

  1137. 

  1138. AVCodec indeo3_decoder = {

  1139.     "indeo3",

  1140.     CODEC_TYPE_VIDEO,

  1141.     CODEC_ID_INDEO3,

  1142.     sizeof(Indeo3DecodeContext),

  1143.     indeo3_decode_init,

  1144.     NULL,

  1145.     indeo3_decode_end,

  1146.     indeo3_decode_frame,

  1147.     0,

  1148.     NULL

  1149. };