dlls/iccvid/iccvid.c

   1 /*
   2  * Radius Cinepak Video Decoder
   3  *
   4  * Copyright 2001 Dr. Tim Ferguson (see below)
   5  * Portions Copyright 2003 Mike McCormack for CodeWeavers
   6  *
   7  * This library 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  * This library 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 this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 /* Copyright notice from original source:
  23  * ------------------------------------------------------------------------
  24  * Radius Cinepak Video Decoder
  25  *
  26  * Dr. Tim Ferguson, 2001.
  27  * For more details on the algorithm:
  28  *         http://www.csse.monash.edu.au/~timf/videocodec.html
  29  *
  30  * This is basically a vector quantiser with adaptive vector density.  The
  31  * frame is segmented into 4x4 pixel blocks, and each block is coded using
  32  * either 1 or 4 vectors.
  33  *
  34  * There are still some issues with this code yet to be resolved.  In
  35  * particular with decoding in the strip boundaries.  However, I have not
  36  * yet found a sequence it doesn't work on.  Ill keep trying :)
  37  *
  38  * You may freely use this source code.  I only ask that you reference its
  39  * source in your projects documentation:
  40  *       Tim Ferguson: http://www.csse.monash.edu.au/~timf/
  41  * ------------------------------------------------------------------------ */
  42
  43 #include <stdarg.h>
  44 #include "windef.h"
  45 #include "winbase.h"
  46 #include "wingdi.h"
  47 #include "winuser.h"
  48 #include "commdlg.h"
  49 #include "vfw.h"
  50 #include "mmsystem.h"
  51 #include "iccvid_private.h"
  52
  53 #include "wine/debug.h"
  54
  55 WINE_DEFAULT_DEBUG_CHANNEL(iccvid);
  56
  57 static HINSTANCE ICCVID_hModule;
  58
  59 #define ICCVID_MAGIC mmioFOURCC('c', 'v', 'i', 'd')
  60
  61 #define DBUG    0
  62 #define MAX_STRIPS 32
  63
  64 /* ------------------------------------------------------------------------ */
  65 typedef struct
  66 {
  67     unsigned char y0, y1, y2, y3;
  68     char u, v;
  69     unsigned char r[4], g[4], b[4];
  70 } cvid_codebook;
  71
  72 typedef struct {
  73     cvid_codebook *v4_codebook[MAX_STRIPS];
  74     cvid_codebook *v1_codebook[MAX_STRIPS];
  75     unsigned int strip_num;
  76 } cinepak_info;
  77
  78 typedef struct _ICCVID_Info
  79 {
  80     DWORD         dwMagic;
  81     int           bits_per_pixel;
  82     cinepak_info *cvinfo;
  83 } ICCVID_Info;
  84
  85 static inline LPVOID heap_alloc( size_t size )
  86 {
  87     return HeapAlloc( GetProcessHeap(), 0, size );
  88 }
  89
  90 static inline BOOL heap_free( LPVOID ptr )
  91 {
  92     return HeapFree( GetProcessHeap(), 0, ptr );
  93 }
  94
  95
  96 /* ------------------------------------------------------------------------ */
  97 static unsigned char *in_buffer, uiclip[1024], *uiclp = NULL;
  98
  99 #define get_byte() *(in_buffer++)
 100 #define skip_byte() in_buffer++
 101 #define get_word() ((unsigned short)(in_buffer += 2, \
 102     (in_buffer[-2] << 8 | in_buffer[-1])))
 103 #define get_long() ((unsigned long)(in_buffer += 4, \
 104     (in_buffer[-4] << 24 | in_buffer[-3] << 16 | in_buffer[-2] << 8 | in_buffer[-1])))
 105
 106
 107 /* ---------------------------------------------------------------------- */
 108 static inline void read_codebook(cvid_codebook *c, int mode)
 109 {
 110 int uvr, uvg, uvb;
 111
 112     if(mode)        /* black and white */
 113         {
 114         c->y0 = get_byte();
 115         c->y1 = get_byte();
 116         c->y2 = get_byte();
 117         c->y3 = get_byte();
 118         c->u = c->v = 0;
 119
 120         c->r[0] = c->g[0] = c->b[0] = c->y0;
 121         c->r[1] = c->g[1] = c->b[1] = c->y1;
 122         c->r[2] = c->g[2] = c->b[2] = c->y2;
 123         c->r[3] = c->g[3] = c->b[3] = c->y3;
 124         }
 125     else            /* colour */
 126         {
 127         c->y0 = get_byte();  /* luma */
 128         c->y1 = get_byte();
 129         c->y2 = get_byte();
 130         c->y3 = get_byte();
 131         c->u = get_byte(); /* chroma */
 132         c->v = get_byte();
 133
 134         uvr = c->v << 1;
 135         uvg = -((c->u+1) >> 1) - c->v;
 136         uvb = c->u << 1;
 137
 138         c->r[0] = uiclp[c->y0 + uvr]; c->g[0] = uiclp[c->y0 + uvg]; c->b[0] = uiclp[c->y0 + uvb];
 139         c->r[1] = uiclp[c->y1 + uvr]; c->g[1] = uiclp[c->y1 + uvg]; c->b[1] = uiclp[c->y1 + uvb];
 140         c->r[2] = uiclp[c->y2 + uvr]; c->g[2] = uiclp[c->y2 + uvg]; c->b[2] = uiclp[c->y2 + uvb];
 141         c->r[3] = uiclp[c->y3 + uvr]; c->g[3] = uiclp[c->y3 + uvg]; c->b[3] = uiclp[c->y3 + uvb];
 142         }
 143 }
 144
 145
 146 #define MAKECOLOUR32(r,g,b) (((r) << 16) | ((g) << 8) | (b))
 147 /*#define MAKECOLOUR24(r,g,b) (((r) << 16) | ((g) << 8) | (b))*/
 148 #define MAKECOLOUR16(r,g,b) (((r) >> 3) << 11)| (((g) >> 2) << 5)| (((b) >> 3) << 0)
 149 #define MAKECOLOUR15(r,g,b) (((r) >> 3) << 10)| (((g) >> 3) << 5)| (((b) >> 3) << 0)
 150
 151 /* ------------------------------------------------------------------------ */
 152 static void cvid_v1_32(unsigned char *frm, unsigned char *limit, int stride, cvid_codebook *cb)
 153 {
 154 unsigned long *vptr = (unsigned long *)frm;
 155 #ifndef ORIGINAL
 156 int row_inc = -stride/4;
 157 #else
 158 int row_inc = stride/4;
 159 #endif
 160 int x, y;
 161
 162     /* fill 4x4 block of pixels with colour values from codebook */
 163     for (y = 0; y < 4; y++)
 164     {
 165         if (&vptr[y*row_inc] < (unsigned long *)limit) return;
 166         for (x = 0; x < 4; x++)
 167             vptr[y*row_inc + x] = MAKECOLOUR32(cb->r[x/2+(y/2)*2], cb->g[x/2+(y/2)*2], cb->b[x/2+(y/2)*2]);
 168     }
 169 }
 170
 171
 172 /* ------------------------------------------------------------------------ */
 173 static void cvid_v4_32(unsigned char *frm, unsigned char *limit, int stride, cvid_codebook *cb0,
 174     cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3)
 175 {
 176 unsigned long *vptr = (unsigned long *)frm;
 177 #ifndef ORIGINAL
 178 int row_inc = -stride/4;
 179 #else
 180 int row_inc = stride/4;
 181 #endif
 182 int x, y;
 183 cvid_codebook * cb[] = {cb0,cb1,cb2,cb3};
 184
 185     /* fill 4x4 block of pixels with colour values from codebooks */
 186     for (y = 0; y < 4; y++)
 187     {
 188         if (&vptr[y*row_inc] < (unsigned long *)limit) return;
 189         for (x = 0; x < 4; x++)
 190             vptr[y*row_inc + x] = MAKECOLOUR32(cb[x/2+(y/2)*2]->r[x%2+(y%2)*2], cb[x/2+(y/2)*2]->g[x%2+(y%2)*2], cb[x/2+(y/2)*2]->b[x%2+(y%2)*2]);
 191     }
 192 }
 193
 194
 195 /* ------------------------------------------------------------------------ */
 196 static void cvid_v1_24(unsigned char *vptr, unsigned char *limit, int stride, cvid_codebook *cb)
 197 {
 198 #ifndef ORIGINAL
 199 int row_inc = -stride;
 200 #else
 201 int row_inc = stride;
 202 #endif
 203 int x, y;
 204
 205     /* fill 4x4 block of pixels with colour values from codebook */
 206     for (y = 0; y < 4; y++)
 207     {
 208         if (&vptr[y*row_inc] < limit) return;
 209         for (x = 0; x < 4; x++)
 210         {
 211             vptr[y*row_inc + x*3 + 0] = cb->b[x/2+(y/2)*2];
 212             vptr[y*row_inc + x*3 + 1] = cb->g[x/2+(y/2)*2];
 213             vptr[y*row_inc + x*3 + 2] = cb->r[x/2+(y/2)*2];
 214         }
 215     }
 216 }
 217
 218
 219 /* ------------------------------------------------------------------------ */
 220 static void cvid_v4_24(unsigned char *vptr, unsigned char *limit, int stride, cvid_codebook *cb0,
 221     cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3)
 222 {
 223 #ifndef ORIGINAL
 224 int row_inc = -stride;
 225 #else
 226 int row_inc = stride;
 227 #endif
 228 cvid_codebook * cb[] = {cb0,cb1,cb2,cb3};
 229 int x, y;
 230
 231     /* fill 4x4 block of pixels with colour values from codebooks */
 232     for (y = 0; y < 4; y++)
 233     {
 234         if (&vptr[y*row_inc] < limit) return;
 235         for (x = 0; x < 4; x++)
 236         {
 237             vptr[y*row_inc + x*3 + 0] = cb[x/2+(y/2)*2]->b[x%2+(y%2)*2];
 238             vptr[y*row_inc + x*3 + 1] = cb[x/2+(y/2)*2]->g[x%2+(y%2)*2];
 239             vptr[y*row_inc + x*3 + 2] = cb[x/2+(y/2)*2]->r[x%2+(y%2)*2];
 240         }
 241     }
 242 }
 243
 244
 245 /* ------------------------------------------------------------------------ */
 246 static void cvid_v1_16(unsigned char *frm, unsigned char *limit, int stride, cvid_codebook *cb)
 247 {
 248 unsigned short *vptr = (unsigned short *)frm;
 249 #ifndef ORIGINAL
 250 int row_inc = -stride/2;
 251 #else
 252 int row_inc = stride/2;
 253 #endif
 254 int x, y;
 255
 256     /* fill 4x4 block of pixels with colour values from codebook */
 257     for (y = 0; y < 4; y++)
 258     {
 259         if (&vptr[y*row_inc] < (unsigned short *)limit) return;
 260         for (x = 0; x < 4; x++)
 261             vptr[y*row_inc + x] = MAKECOLOUR16(cb->r[x/2+(y/2)*2], cb->g[x/2+(y/2)*2], cb->b[x/2+(y/2)*2]);
 262     }
 263 }
 264
 265
 266 /* ------------------------------------------------------------------------ */
 267 static void cvid_v4_16(unsigned char *frm, unsigned char *limit, int stride, cvid_codebook *cb0,
 268     cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3)
 269 {
 270 unsigned short *vptr = (unsigned short *)frm;
 271 #ifndef ORIGINAL
 272 int row_inc = -stride/2;
 273 #else
 274 int row_inc = stride/2;
 275 #endif
 276 cvid_codebook * cb[] = {cb0,cb1,cb2,cb3};
 277 int x, y;
 278
 279     /* fill 4x4 block of pixels with colour values from codebooks */
 280     for (y = 0; y < 4; y++)
 281     {
 282         if (&vptr[y*row_inc] < (unsigned short *)limit) return;
 283         for (x = 0; x < 4; x++)
 284             vptr[y*row_inc + x] = MAKECOLOUR16(cb[x/2+(y/2)*2]->r[x%2+(y%2)*2], cb[x/2+(y/2)*2]->g[x%2+(y%2)*2], cb[x/2+(y/2)*2]->b[x%2+(y%2)*2]);
 285     }
 286 }
 287
 288 /* ------------------------------------------------------------------------ */
 289 static void cvid_v1_15(unsigned char *frm, unsigned char *limit, int stride, cvid_codebook *cb)
 290 {
 291 unsigned short *vptr = (unsigned short *)frm;
 292 #ifndef ORIGINAL
 293 int row_inc = -stride/2;
 294 #else
 295 int row_inc = stride/2;
 296 #endif
 297 int x, y;
 298
 299     /* fill 4x4 block of pixels with colour values from codebook */
 300     for (y = 0; y < 4; y++)
 301     {
 302         if (&vptr[y*row_inc] < (unsigned short *)limit) return;
 303         for (x = 0; x < 4; x++)
 304             vptr[y*row_inc + x] = MAKECOLOUR15(cb->r[x/2+(y/2)*2], cb->g[x/2+(y/2)*2], cb->b[x/2+(y/2)*2]);
 305     }
 306 }
 307
 308
 309 /* ------------------------------------------------------------------------ */
 310 static void cvid_v4_15(unsigned char *frm, unsigned char *limit, int stride, cvid_codebook *cb0,
 311     cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3)
 312 {
 313 unsigned short *vptr = (unsigned short *)frm;
 314 #ifndef ORIGINAL
 315 int row_inc = -stride/2;
 316 #else
 317 int row_inc = stride/2;
 318 #endif
 319 cvid_codebook * cb[] = {cb0,cb1,cb2,cb3};
 320 int x, y;
 321
 322     /* fill 4x4 block of pixels with colour values from codebooks */
 323     for (y = 0; y < 4; y++)
 324     {
 325         if (&vptr[y*row_inc] < (unsigned short *)limit) return;
 326         for (x = 0; x < 4; x++)
 327             vptr[y*row_inc + x] = MAKECOLOUR15(cb[x/2+(y/2)*2]->r[x%2+(y%2)*2], cb[x/2+(y/2)*2]->g[x%2+(y%2)*2], cb[x/2+(y/2)*2]->b[x%2+(y%2)*2]);
 328     }
 329 }
 330
 331
 332 /* ------------------------------------------------------------------------
 333  * Call this function once at the start of the sequence and save the
 334  * returned context for calls to decode_cinepak().
 335  */
 336 static cinepak_info *decode_cinepak_init(void)
 337 {
 338     cinepak_info *cvinfo;
 339     int i;
 340
 341     cvinfo = heap_alloc( sizeof (cinepak_info) );
 342     if( !cvinfo )
 343         return NULL;
 344     cvinfo->strip_num = 0;
 345
 346     if(uiclp == NULL)
 347     {
 348         uiclp = uiclip+512;
 349         for(i = -512; i < 512; i++)
 350             uiclp[i] = (i < 0 ? 0 : (i > 255 ? 255 : i));
 351     }
 352
 353     return cvinfo;
 354 }
 355
 356 static void free_cvinfo( cinepak_info *cvinfo )
 357 {
 358     unsigned int i;
 359
 360     for( i=0; i<cvinfo->strip_num; i++ )
 361     {
 362         heap_free(cvinfo->v4_codebook[i]);
 363         heap_free(cvinfo->v1_codebook[i]);
 364     }
 365     heap_free( cvinfo );
 366 }
 367
 368 typedef void (*fn_cvid_v1)(unsigned char *frm, unsigned char *limit,
 369                            int stride, cvid_codebook *cb);
 370 typedef void (*fn_cvid_v4)(unsigned char *frm, unsigned char *limit, int stride,
 371                            cvid_codebook *cb0, cvid_codebook *cb1,
 372                            cvid_codebook *cb2, cvid_codebook *cb3);
 373
 374 /* ------------------------------------------------------------------------
 375  * This function decodes a buffer containing a Cinepak encoded frame.
 376  *
 377  * context - the context created by decode_cinepak_init().
 378  * buf - the input buffer to be decoded
 379  * size - the size of the input buffer
 380  * frame - the output frame buffer (24 or 32 bit per pixel)
 381  * width - the width of the output frame
 382  * height - the height of the output frame
 383  * bit_per_pixel - the number of bits per pixel allocated to the output
 384  *   frame (only 24 or 32 bpp are supported)
 385  */
 386 static void decode_cinepak(cinepak_info *cvinfo, unsigned char *buf, int size,
 387            unsigned char *frame, unsigned int width, unsigned int height, int bit_per_pixel)
 388 {
 389     cvid_codebook *v4_codebook, *v1_codebook, *codebook = NULL;
 390     unsigned long x, y, y_bottom, frame_flags, strips, cv_width, cv_height,
 391                   cnum, strip_id, chunk_id, x0, y0, x1, y1, ci, flag, mask;
 392     long len, top_size, chunk_size;
 393     unsigned char *frm_ptr;
 394     unsigned int i, cur_strip;
 395     int d0, d1, d2, d3, frm_stride, bpp = 3;
 396     fn_cvid_v1 cvid_v1 = cvid_v1_24;
 397     fn_cvid_v4 cvid_v4 = cvid_v4_24;
 398
 399     y = 0;
 400     y_bottom = 0;
 401     in_buffer = buf;
 402
 403     frame_flags = get_byte();
 404     len = get_byte() << 16;
 405     len |= get_byte() << 8;
 406     len |= get_byte();
 407
 408     switch(bit_per_pixel)
 409         {
 410         case 15:
 411             bpp = 2;
 412             cvid_v1 = cvid_v1_15;
 413             cvid_v4 = cvid_v4_15;
 414             break;
 415         case 16:
 416             bpp = 2;
 417             cvid_v1 = cvid_v1_16;
 418             cvid_v4 = cvid_v4_16;
 419             break;
 420         case 24:
 421             bpp = 3;
 422             cvid_v1 = cvid_v1_24;
 423             cvid_v4 = cvid_v4_24;
 424             break;
 425         case 32:
 426             bpp = 4;
 427             cvid_v1 = cvid_v1_32;
 428             cvid_v4 = cvid_v4_32;
 429             break;
 430         }
 431
 432     frm_stride = width * bpp;
 433     frm_ptr = frame;
 434
 435     if(len != size)
 436         {
 437         if(len & 0x01) len++; /* AVIs tend to have a size mismatch */
 438         if(len != size)
 439             {
 440             ERR("CVID: corruption %d (QT/AVI) != %ld (CV)\n", size, len);
 441             /* return; */
 442             }
 443         }
 444
 445     cv_width = get_word();
 446     cv_height = get_word();
 447     strips = get_word();
 448
 449     if(strips > cvinfo->strip_num)
 450         {
 451         if(strips >= MAX_STRIPS)
 452             {
 453             ERR("CVID: strip overflow (more than %d)\n", MAX_STRIPS);
 454             return;
 455             }
 456
 457         for(i = cvinfo->strip_num; i < strips; i++)
 458             {
 459             if((cvinfo->v4_codebook[i] = heap_alloc(sizeof(cvid_codebook) * 260)) == NULL)
 460                 {
 461                 ERR("CVID: codebook v4 alloc err\n");
 462                 return;
 463                 }
 464
 465             if((cvinfo->v1_codebook[i] = heap_alloc(sizeof(cvid_codebook) * 260)) == NULL)
 466                 {
 467                 ERR("CVID: codebook v1 alloc err\n");
 468                 return;
 469                 }
 470             }
 471         }
 472     cvinfo->strip_num = strips;
 473
 474     TRACE("CVID: <%ld,%ld> strips %ld\n", cv_width, cv_height, strips);
 475
 476     for(cur_strip = 0; cur_strip < strips; cur_strip++)
 477         {
 478         v4_codebook = cvinfo->v4_codebook[cur_strip];
 479         v1_codebook = cvinfo->v1_codebook[cur_strip];
 480
 481         if((cur_strip > 0) && (!(frame_flags & 0x01)))
 482             {
 483             memcpy(cvinfo->v4_codebook[cur_strip], cvinfo->v4_codebook[cur_strip-1], 260 * sizeof(cvid_codebook));
 484             memcpy(cvinfo->v1_codebook[cur_strip], cvinfo->v1_codebook[cur_strip-1], 260 * sizeof(cvid_codebook));
 485             }
 486
 487         strip_id = get_word();        /* 1000 = key strip, 1100 = iter strip */
 488         top_size = get_word();
 489         y0 = get_word();        /* FIXME: most of these are ignored at the moment */
 490         x0 = get_word();
 491         y1 = get_word();
 492         x1 = get_word();
 493
 494         y_bottom += y1;
 495         top_size -= 12;
 496         x = 0;
 497         if(x1 != width)
 498             WARN("CVID: Warning x1 (%ld) != width (%d)\n", x1, width);
 499
 500         TRACE("   %d) %04lx %04ld <%ld,%ld> <%ld,%ld> yt %ld\n",
 501               cur_strip, strip_id, top_size, x0, y0, x1, y1, y_bottom);
 502
 503         while(top_size > 0)
 504             {
 505             chunk_id  = get_word();
 506             chunk_size = get_word();
 507
 508             TRACE("        %04lx %04ld\n", chunk_id, chunk_size);
 509             top_size -= chunk_size;
 510             chunk_size -= 4;
 511
 512             switch(chunk_id)
 513                 {
 514                     /* -------------------- Codebook Entries -------------------- */
 515                 case 0x2000:
 516                 case 0x2200:
 517                     codebook = (chunk_id == 0x2200 ? v1_codebook : v4_codebook);
 518                     cnum = chunk_size/6;
 519                     for(i = 0; i < cnum; i++) read_codebook(codebook+i, 0);
 520                     break;
 521
 522                 case 0x2400:
 523                 case 0x2600:        /* 8 bit per pixel */
 524                     codebook = (chunk_id == 0x2600 ? v1_codebook : v4_codebook);
 525                     cnum = chunk_size/4;
 526                     for(i = 0; i < cnum; i++) read_codebook(codebook+i, 1);
 527                     break;
 528
 529                 case 0x2100:
 530                 case 0x2300:
 531                     codebook = (chunk_id == 0x2300 ? v1_codebook : v4_codebook);
 532
 533                     ci = 0;
 534                     while(chunk_size > 0)
 535                         {
 536                         flag = get_long();
 537                         chunk_size -= 4;
 538
 539                         for(i = 0; i < 32; i++)
 540                             {
 541                             if(flag & 0x80000000)
 542                                 {
 543                                 chunk_size -= 6;
 544                                 read_codebook(codebook+ci, 0);
 545                                 }
 546
 547                             ci++;
 548                             flag <<= 1;
 549                             }
 550                         }
 551                     while(chunk_size > 0) { skip_byte(); chunk_size--; }
 552                     break;
 553
 554                 case 0x2500:
 555                 case 0x2700:        /* 8 bit per pixel */
 556                     codebook = (chunk_id == 0x2700 ? v1_codebook : v4_codebook);
 557
 558                     ci = 0;
 559                     while(chunk_size > 0)
 560                         {
 561                         flag = get_long();
 562                         chunk_size -= 4;
 563
 564                         for(i = 0; i < 32; i++)
 565                             {
 566                             if(flag & 0x80000000)
 567                                 {
 568                                 chunk_size -= 4;
 569                                 read_codebook(codebook+ci, 1);
 570                                 }
 571
 572                             ci++;
 573                             flag <<= 1;
 574                             }
 575                         }
 576                     while(chunk_size > 0) { skip_byte(); chunk_size--; }
 577                     break;
 578
 579                     /* -------------------- Frame -------------------- */
 580                 case 0x3000:
 581                     while((chunk_size > 0) && (y < y_bottom))
 582                         {
 583                         flag = get_long();
 584                         chunk_size -= 4;
 585
 586                         for(i = 0; i < 32; i++)
 587                             {
 588                             if(y >= y_bottom) break;
 589                             if(flag & 0x80000000)    /* 4 bytes per block */
 590                                 {
 591                                 d0 = get_byte();
 592                                 d1 = get_byte();
 593                                 d2 = get_byte();
 594                                 d3 = get_byte();
 595                                 chunk_size -= 4;
 596 #ifdef ORIGINAL
 597                                 cvid_v4(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v4_codebook+d0, v4_codebook+d1, v4_codebook+d2, v4_codebook+d3);
 598 #else
 599                                 cvid_v4(frm_ptr + ((height - 1 - y) * frm_stride + x * bpp), frame, frm_stride, v4_codebook+d0, v4_codebook+d1, v4_codebook+d2, v4_codebook+d3);
 600 #endif
 601                                 }
 602                             else        /* 1 byte per block */
 603                                 {
 604 #ifdef ORIGINAL
 605                                 cvid_v1(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v1_codebook + get_byte());
 606 #else
 607                                 cvid_v1(frm_ptr + ((height - 1 - y) * frm_stride + x * bpp), frame, frm_stride, v1_codebook + get_byte());
 608 #endif
 609                                 chunk_size--;
 610                                 }
 611
 612                             x += 4;
 613                             if(x >= width)
 614                                 {
 615                                 x = 0;
 616                                 y += 4;
 617                                 }
 618                             flag <<= 1;
 619                             }
 620                         }
 621                     while(chunk_size > 0) { skip_byte(); chunk_size--; }
 622                     break;
 623
 624                 case 0x3100:
 625                     while((chunk_size > 0) && (y < y_bottom))
 626                         {
 627                             /* ---- flag bits: 0 = SKIP, 10 = V1, 11 = V4 ---- */
 628                         flag = get_long();
 629                         chunk_size -= 4;
 630                         mask = 0x80000000;
 631
 632                         while((mask) && (y < y_bottom))
 633                             {
 634                             if(flag & mask)
 635                                 {
 636                                 if(mask == 1)
 637                                     {
 638                                     if(chunk_size < 0) break;
 639                                     flag = get_long();
 640                                     chunk_size -= 4;
 641                                     mask = 0x80000000;
 642                                     }
 643                                 else mask >>= 1;
 644
 645                                 if(flag & mask)        /* V4 */
 646                                     {
 647                                     d0 = get_byte();
 648                                     d1 = get_byte();
 649                                     d2 = get_byte();
 650                                     d3 = get_byte();
 651                                     chunk_size -= 4;
 652 #ifdef ORIGINAL
 653                                     cvid_v4(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v4_codebook+d0, v4_codebook+d1, v4_codebook+d2, v4_codebook+d3);
 654 #else
 655                                     cvid_v4(frm_ptr + ((height - 1 - y) * frm_stride + x * bpp), frame, frm_stride, v4_codebook+d0, v4_codebook+d1, v4_codebook+d2, v4_codebook+d3);
 656 #endif
 657                                     }
 658                                 else        /* V1 */
 659                                     {
 660                                     chunk_size--;
 661 #ifdef ORIGINAL
 662                                     cvid_v1(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v1_codebook + get_byte());
 663 #else
 664                                     cvid_v1(frm_ptr + ((height - 1 - y) * frm_stride + x * bpp), frame, frm_stride, v1_codebook + get_byte());
 665 #endif
 666                                     }
 667                                 }        /* else SKIP */
 668
 669                             mask >>= 1;
 670                             x += 4;
 671                             if(x >= width)
 672                                 {
 673                                 x = 0;
 674                                 y += 4;
 675                                 }
 676                             }
 677                         }
 678
 679                     while(chunk_size > 0) { skip_byte(); chunk_size--; }
 680                     break;
 681
 682                 case 0x3200:        /* each byte is a V1 codebook */
 683                     while((chunk_size > 0) && (y < y_bottom))
 684                         {
 685 #ifdef ORIGINAL
 686                         cvid_v1(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v1_codebook + get_byte());
 687 #else
 688                         cvid_v1(frm_ptr + ((height - 1 - y) * frm_stride + x * bpp), frame, frm_stride, v1_codebook + get_byte());
 689 #endif
 690                         chunk_size--;
 691                         x += 4;
 692                         if(x >= width)
 693                             {
 694                             x = 0;
 695                             y += 4;
 696                             }
 697                         }
 698                     while(chunk_size > 0) { skip_byte(); chunk_size--; }
 699                     break;
 700
 701                 default:
 702                     ERR("CVID: unknown chunk_id %08lx\n", chunk_id);
 703                     while(chunk_size > 0) { skip_byte(); chunk_size--; }
 704                     break;
 705                 }
 706             }
 707         }
 708
 709     if(len != size)
 710         {
 711         if(len & 0x01) len++; /* AVIs tend to have a size mismatch */
 712         if(len != size)
 713             {
 714             long xlen;
 715             skip_byte();
 716             xlen = get_byte() << 16;
 717             xlen |= get_byte() << 8;
 718             xlen |= get_byte(); /* Read Len */
 719             WARN("CVID: END INFO chunk size %d cvid size1 %ld cvid size2 %ld\n",
 720                   size, len, xlen);
 721             }
 722         }
 723 }
 724
 725 static void ICCVID_dump_BITMAPINFO(const BITMAPINFO * bmi)
 726 {
 727     TRACE(
 728         "planes = %d\n"
 729         "bpp    = %d\n"
 730         "height = %d\n"
 731         "width  = %d\n"
 732         "compr  = %s\n",
 733         bmi->bmiHeader.biPlanes,
 734         bmi->bmiHeader.biBitCount,
 735         bmi->bmiHeader.biHeight,
 736         bmi->bmiHeader.biWidth,
 737         debugstr_an( (const char *)&bmi->bmiHeader.biCompression, 4 ) );
 738 }
 739
 740 static inline int ICCVID_CheckMask(RGBQUAD bmiColors[3], COLORREF redMask, COLORREF blueMask, COLORREF greenMask)
 741 {
 742     COLORREF realRedMask = MAKECOLOUR32(bmiColors[0].rgbRed, bmiColors[0].rgbGreen, bmiColors[0].rgbBlue);
 743     COLORREF realBlueMask = MAKECOLOUR32(bmiColors[1].rgbRed, bmiColors[1].rgbGreen, bmiColors[1].rgbBlue);
 744     COLORREF realGreenMask = MAKECOLOUR32(bmiColors[2].rgbRed, bmiColors[2].rgbGreen, bmiColors[2].rgbBlue);
 745
 746     TRACE("\nbmiColors[0] = 0x%08x\nbmiColors[1] = 0x%08x\nbmiColors[2] = 0x%08x\n",
 747         realRedMask, realBlueMask, realGreenMask);
 748
 749     if ((realRedMask == redMask) &&
 750         (realBlueMask == blueMask) &&
 751         (realGreenMask == greenMask))
 752         return TRUE;
 753     return FALSE;
 754 }
 755
 756 static LRESULT ICCVID_DecompressQuery( ICCVID_Info *info, LPBITMAPINFO in, LPBITMAPINFO out )
 757 {
 758     TRACE("ICM_DECOMPRESS_QUERY %p %p %p\n", info, in, out);
 759
 760     if( (info==NULL) || (info->dwMagic!=ICCVID_MAGIC) )
 761         return ICERR_BADPARAM;
 762
 763     TRACE("in: ");
 764     ICCVID_dump_BITMAPINFO(in);
 765
 766     if( in->bmiHeader.biCompression != ICCVID_MAGIC )
 767         return ICERR_BADFORMAT;
 768
 769     if( out )
 770     {
 771         TRACE("out: ");
 772         ICCVID_dump_BITMAPINFO(out);
 773
 774         if( in->bmiHeader.biPlanes != out->bmiHeader.biPlanes )
 775             return ICERR_BADFORMAT;
 776         if( in->bmiHeader.biHeight != out->bmiHeader.biHeight )
 777             return ICERR_BADFORMAT;
 778         if( in->bmiHeader.biWidth != out->bmiHeader.biWidth )
 779             return ICERR_BADFORMAT;
 780
 781         switch( out->bmiHeader.biBitCount )
 782         {
 783         case 16:
 784             if ( out->bmiHeader.biCompression == BI_BITFIELDS )
 785             {
 786                 if ( !ICCVID_CheckMask(out->bmiColors, 0x7C00, 0x03E0, 0x001F) &&
 787                      !ICCVID_CheckMask(out->bmiColors, 0xF800, 0x07E0, 0x001F) )
 788                 {
 789                     TRACE("unsupported output bit field(s) for 16-bit colors\n");
 790                     return ICERR_BADFORMAT;
 791                 }
 792             }
 793             break;
 794         case 24:
 795         case 32:
 796             break;
 797         default:
 798             TRACE("unsupported output bitcount = %d\n", out->bmiHeader.biBitCount );
 799             return ICERR_BADFORMAT;
 800         }
 801     }
 802
 803     return ICERR_OK;
 804 }
 805
 806 static LRESULT ICCVID_DecompressGetFormat( ICCVID_Info *info, LPBITMAPINFO in, LPBITMAPINFO out )
 807 {
 808     DWORD size;
 809
 810     TRACE("ICM_DECOMPRESS_GETFORMAT %p %p %p\n", info, in, out);
 811
 812     if( (info==NULL) || (info->dwMagic!=ICCVID_MAGIC) )
 813         return ICERR_BADPARAM;
 814
 815     size = in->bmiHeader.biSize;
 816     if (in->bmiHeader.biBitCount <= 8)
 817         size += in->bmiHeader.biClrUsed * sizeof(RGBQUAD);
 818
 819     if( out )
 820     {
 821         memcpy( out, in, size );
 822         out->bmiHeader.biCompression = BI_RGB;
 823         out->bmiHeader.biSizeImage = in->bmiHeader.biHeight
 824                                    * in->bmiHeader.biWidth *4;
 825         return ICERR_OK;
 826     }
 827     return size;
 828 }
 829
 830 static LRESULT ICCVID_DecompressBegin( ICCVID_Info *info, LPBITMAPINFO in, LPBITMAPINFO out )
 831 {
 832     TRACE("ICM_DECOMPRESS_BEGIN %p %p %p\n", info, in, out);
 833
 834     if( (info==NULL) || (info->dwMagic!=ICCVID_MAGIC) )
 835         return ICERR_BADPARAM;
 836
 837     info->bits_per_pixel = out->bmiHeader.biBitCount;
 838
 839     if (info->bits_per_pixel == 16)
 840     {
 841         if ( out->bmiHeader.biCompression == BI_BITFIELDS )
 842         {
 843             if ( ICCVID_CheckMask(out->bmiColors, 0x7C00, 0x03E0, 0x001F) )
 844                 info->bits_per_pixel = 15;
 845             else if ( ICCVID_CheckMask(out->bmiColors, 0xF800, 0x07E0, 0x001F) )
 846                 info->bits_per_pixel = 16;
 847             else
 848             {
 849                 TRACE("unsupported output bit field(s) for 16-bit colors\n");
 850                 return ICERR_UNSUPPORTED;
 851             }
 852         }
 853         else
 854             info->bits_per_pixel = 15;
 855     }
 856
 857     TRACE("bit_per_pixel = %d\n", info->bits_per_pixel);
 858
 859     if( info->cvinfo )
 860         free_cvinfo( info->cvinfo );
 861     info->cvinfo = decode_cinepak_init();
 862
 863     return ICERR_OK;
 864 }
 865
 866 static LRESULT ICCVID_Decompress( ICCVID_Info *info, ICDECOMPRESS *icd, DWORD size )
 867 {
 868     LONG width, height;
 869
 870     TRACE("ICM_DECOMPRESS %p %p %d\n", info, icd, size);
 871
 872     if( (info==NULL) || (info->dwMagic!=ICCVID_MAGIC) )
 873         return ICERR_BADPARAM;
 874     if (info->cvinfo==NULL)
 875     {
 876         ERR("ICM_DECOMPRESS sent after ICM_DECOMPRESS_END\n");
 877         return ICERR_BADPARAM;
 878     }
 879
 880     width  = icd->lpbiInput->biWidth;
 881     height = icd->lpbiInput->biHeight;
 882
 883     decode_cinepak(info->cvinfo, icd->lpInput, icd->lpbiInput->biSizeImage,
 884                    icd->lpOutput, width, height, info->bits_per_pixel);
 885
 886     return ICERR_OK;
 887 }
 888
 889 static LRESULT ICCVID_DecompressEx( ICCVID_Info *info, ICDECOMPRESSEX *icd, DWORD size )
 890 {
 891     LONG width, height;
 892
 893     TRACE("ICM_DECOMPRESSEX %p %p %d\n", info, icd, size);
 894
 895     if( (info==NULL) || (info->dwMagic!=ICCVID_MAGIC) )
 896         return ICERR_BADPARAM;
 897     if (info->cvinfo==NULL)
 898     {
 899         ERR("ICM_DECOMPRESSEX sent after ICM_DECOMPRESS_END\n");
 900         return ICERR_BADPARAM;
 901     }
 902
 903     /* FIXME: flags are ignored */
 904
 905     width  = icd->lpbiSrc->biWidth;
 906     height = icd->lpbiSrc->biHeight;
 907
 908     decode_cinepak(info->cvinfo, icd->lpSrc, icd->lpbiSrc->biSizeImage,
 909                    icd->lpDst, width, height, info->bits_per_pixel);
 910
 911     return ICERR_OK;
 912 }
 913
 914 static LRESULT ICCVID_Close( ICCVID_Info *info )
 915 {
 916     if( (info==NULL) || (info->dwMagic!=ICCVID_MAGIC) )
 917         return 0;
 918     if( info->cvinfo )
 919         free_cvinfo( info->cvinfo );
 920     heap_free( info );
 921     return 1;
 922 }
 923
 924 static LRESULT ICCVID_GetInfo( ICCVID_Info *info, ICINFO *icinfo, DWORD dwSize )
 925 {
 926     if (!icinfo) return sizeof(ICINFO);
 927     if (dwSize < sizeof(ICINFO)) return 0;
 928
 929     icinfo->dwSize = sizeof(ICINFO);
 930     icinfo->fccType = ICTYPE_VIDEO;
 931     icinfo->fccHandler = info ? info->dwMagic : ICCVID_MAGIC;
 932     icinfo->dwFlags = 0;
 933     icinfo->dwVersion = ICVERSION;
 934     icinfo->dwVersionICM = ICVERSION;
 935
 936     LoadStringW(ICCVID_hModule, IDS_NAME, icinfo->szName, sizeof(icinfo->szName)/sizeof(WCHAR));
 937     LoadStringW(ICCVID_hModule, IDS_DESCRIPTION, icinfo->szDescription, sizeof(icinfo->szDescription)/sizeof(WCHAR));
 938     /* msvfw32 will fill icinfo->szDriver for us */
 939
 940     return sizeof(ICINFO);
 941 }
 942
 943 static LRESULT ICCVID_DecompressEnd( ICCVID_Info *info )
 944 {
 945     if( info->cvinfo )
 946     {
 947         free_cvinfo( info->cvinfo );
 948         info->cvinfo = NULL;
 949     }
 950     return ICERR_OK;
 951 }
 952
 953 LRESULT WINAPI ICCVID_DriverProc( DWORD_PTR dwDriverId, HDRVR hdrvr, UINT msg,
 954                                   LPARAM lParam1, LPARAM lParam2)
 955 {
 956     ICCVID_Info *info = (ICCVID_Info *) dwDriverId;
 957
 958     TRACE("%ld %p %d %ld %ld\n", dwDriverId, hdrvr, msg, lParam1, lParam2);
 959
 960     switch( msg )
 961     {
 962     case DRV_LOAD:
 963         TRACE("Loaded\n");
 964         return 1;
 965     case DRV_ENABLE:
 966         return 0;
 967     case DRV_DISABLE:
 968         return 0;
 969     case DRV_FREE:
 970         return 0;
 971
 972     case DRV_OPEN:
 973     {
 974         ICINFO *icinfo = (ICINFO *)lParam2;
 975
 976         TRACE("Opened\n");
 977
 978         if (icinfo && icinfo->fccType != ICTYPE_VIDEO) return 0;
 979
 980         info = heap_alloc( sizeof (ICCVID_Info) );
 981         if( info )
 982         {
 983             info->dwMagic = ICCVID_MAGIC;
 984             info->cvinfo = NULL;
 985         }
 986         return (LRESULT) info;
 987     }
 988
 989     case DRV_CLOSE:
 990         return ICCVID_Close( info );
 991
 992     case ICM_GETINFO:
 993         return ICCVID_GetInfo( info, (ICINFO *)lParam1, (DWORD)lParam2 );
 994
 995     case ICM_DECOMPRESS_QUERY:
 996         return ICCVID_DecompressQuery( info, (LPBITMAPINFO) lParam1,
 997                                        (LPBITMAPINFO) lParam2 );
 998     case ICM_DECOMPRESS_GET_FORMAT:
 999         return ICCVID_DecompressGetFormat( info, (LPBITMAPINFO) lParam1,
1000                                        (LPBITMAPINFO) lParam2 );
1001     case ICM_DECOMPRESS_BEGIN:
1002         return ICCVID_DecompressBegin( info, (LPBITMAPINFO) lParam1,
1003                                        (LPBITMAPINFO) lParam2 );
1004     case ICM_DECOMPRESS:
1005         return ICCVID_Decompress( info, (ICDECOMPRESS*) lParam1,
1006                                   (DWORD) lParam2 );
1007     case ICM_DECOMPRESSEX:
1008         return ICCVID_DecompressEx( info, (ICDECOMPRESSEX*) lParam1,
1009                                   (DWORD) lParam2 );
1010
1011     case ICM_DECOMPRESS_END:
1012         return ICCVID_DecompressEnd( info );
1013
1014     case ICM_COMPRESS_QUERY:
1015         FIXME("compression not implemented\n");
1016         return ICERR_BADFORMAT;
1017
1018     case ICM_CONFIGURE:
1019         return ICERR_UNSUPPORTED;
1020
1021     default:
1022         FIXME("Unknown message: %04x %ld %ld\n", msg, lParam1, lParam2);
1023     }
1024     return ICERR_UNSUPPORTED;
1025 }
1026
1027 BOOL WINAPI DllMain(HINSTANCE hModule, DWORD dwReason, LPVOID lpReserved)
1028 {
1029     TRACE("(%p,%d,%p)\n", hModule, dwReason, lpReserved);
1030
1031     switch (dwReason)
1032     {
1033     case DLL_PROCESS_ATTACH:
1034         DisableThreadLibraryCalls(hModule);
1035         ICCVID_hModule = hModule;
1036         break;
1037
1038     case DLL_PROCESS_DETACH:
1039         break;
1040     }
1041     return TRUE;
1042 }