git.oblomov.eu Git - wine/blob - 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 #define compare_fourcc(fcc1, fcc2) (((fcc1)^(fcc2))&~0x20202020)
  61
  62 #define DBUG    0
  63 #define MAX_STRIPS 32
  64
  65 /* ------------------------------------------------------------------------ */
  66 typedef struct
  67 {
  68     unsigned char y0, y1, y2, y3;
  69     char u, v;
  70     unsigned char r[4], g[4], b[4];
  71 } cvid_codebook;
  72
  73 typedef struct {
  74     cvid_codebook *v4_codebook[MAX_STRIPS];
  75     cvid_codebook *v1_codebook[MAX_STRIPS];
  76     unsigned int strip_num;
  77 } cinepak_info;
  78
  79 typedef struct _ICCVID_Info
  80 {
  81     DWORD         dwMagic;
  82     int           bits_per_pixel;
  83     cinepak_info *cvinfo;
  84 } ICCVID_Info;
  85
  86 static inline LPVOID heap_alloc( size_t size )
  87 {
  88     return HeapAlloc( GetProcessHeap(), 0, size );
  89 }
  90
  91 static inline BOOL heap_free( LPVOID ptr )
  92 {
  93     return HeapFree( GetProcessHeap(), 0, ptr );
  94 }
  95
  96
  97 /* ------------------------------------------------------------------------ */
  98 static unsigned char *in_buffer, uiclip[1024], *uiclp = NULL;
  99
 100 #define get_byte() *(in_buffer++)
 101 #define skip_byte() in_buffer++
 102 #define get_word() ((unsigned short)(in_buffer += 2, \
 103     (in_buffer[-2] << 8 | in_buffer[-1])))
 104 #define get_long() ((unsigned long)(in_buffer += 4, \
 105     (in_buffer[-4] << 24 | in_buffer[-3] << 16 | in_buffer[-2] << 8 | in_buffer[-1])))
 106
 107
 108 /* ---------------------------------------------------------------------- */
 109 static inline void read_codebook(cvid_codebook *c, int mode)
 110 {
 111 int uvr, uvg, uvb;
 112
 113     if(mode)        /* black and white */
 114         {
 115         c->y0 = get_byte();
 116         c->y1 = get_byte();
 117         c->y2 = get_byte();
 118         c->y3 = get_byte();
 119         c->u = c->v = 0;
 120
 121         c->r[0] = c->g[0] = c->b[0] = c->y0;
 122         c->r[1] = c->g[1] = c->b[1] = c->y1;
 123         c->r[2] = c->g[2] = c->b[2] = c->y2;
 124         c->r[3] = c->g[3] = c->b[3] = c->y3;
 125         }
 126     else            /* colour */
 127         {
 128         c->y0 = get_byte();  /* luma */
 129         c->y1 = get_byte();
 130         c->y2 = get_byte();
 131         c->y3 = get_byte();
 132         c->u = get_byte(); /* chroma */
 133         c->v = get_byte();
 134
 135         uvr = c->v << 1;
 136         uvg = -((c->u+1) >> 1) - c->v;
 137         uvb = c->u << 1;
 138
 139         c->r[0] = uiclp[c->y0 + uvr]; c->g[0] = uiclp[c->y0 + uvg]; c->b[0] = uiclp[c->y0 + uvb];
 140         c->r[1] = uiclp[c->y1 + uvr]; c->g[1] = uiclp[c->y1 + uvg]; c->b[1] = uiclp[c->y1 + uvb];
 141         c->r[2] = uiclp[c->y2 + uvr]; c->g[2] = uiclp[c->y2 + uvg]; c->b[2] = uiclp[c->y2 + uvb];
 142         c->r[3] = uiclp[c->y3 + uvr]; c->g[3] = uiclp[c->y3 + uvg]; c->b[3] = uiclp[c->y3 + uvb];
 143         }
 144 }
 145
 146
 147 #define MAKECOLOUR32(r,g,b) (((r) << 16) | ((g) << 8) | (b))
 148 /*#define MAKECOLOUR24(r,g,b) (((r) << 16) | ((g) << 8) | (b))*/
 149 #define MAKECOLOUR16(r,g,b) (((r) >> 3) << 11)| (((g) >> 2) << 5)| (((b) >> 3) << 0)
 150 #define MAKECOLOUR15(r,g,b) (((r) >> 3) << 10)| (((g) >> 3) << 5)| (((b) >> 3) << 0)
 151
 152 /* ------------------------------------------------------------------------ */
 153 static void cvid_v1_32(unsigned char *frm, unsigned char *limit, int stride, cvid_codebook *cb)
 154 {
 155 unsigned long *vptr = (unsigned long *)frm;
 156 #ifndef ORIGINAL
 157 int row_inc = -stride/4;
 158 #else
 159 int row_inc = stride/4;
 160 #endif
 161 int x, y;
 162
 163     /* fill 4x4 block of pixels with colour values from codebook */
 164     for (y = 0; y < 4; y++)
 165     {
 166         if (&vptr[y*row_inc] < (unsigned long *)limit) return;
 167         for (x = 0; x < 4; x++)
 168             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]);
 169     }
 170 }
 171
 172
 173 /* ------------------------------------------------------------------------ */
 174 static void cvid_v4_32(unsigned char *frm, unsigned char *limit, int stride, cvid_codebook *cb0,
 175     cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3)
 176 {
 177 unsigned long *vptr = (unsigned long *)frm;
 178 #ifndef ORIGINAL
 179 int row_inc = -stride/4;
 180 #else
 181 int row_inc = stride/4;
 182 #endif
 183 int x, y;
 184 cvid_codebook * cb[] = {cb0,cb1,cb2,cb3};
 185
 186     /* fill 4x4 block of pixels with colour values from codebooks */
 187     for (y = 0; y < 4; y++)
 188     {
 189         if (&vptr[y*row_inc] < (unsigned long *)limit) return;
 190         for (x = 0; x < 4; x++)
 191             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]);
 192     }
 193 }
 194
 195
 196 /* ------------------------------------------------------------------------ */
 197 static void cvid_v1_24(unsigned char *vptr, unsigned char *limit, int stride, cvid_codebook *cb)
 198 {
 199 #ifndef ORIGINAL
 200 int row_inc = -stride;
 201 #else
 202 int row_inc = stride;
 203 #endif
 204 int x, y;
 205
 206     /* fill 4x4 block of pixels with colour values from codebook */
 207     for (y = 0; y < 4; y++)
 208     {
 209         if (&vptr[y*row_inc] < limit) return;
 210         for (x = 0; x < 4; x++)
 211         {
 212             vptr[y*row_inc + x*3 + 0] = cb->b[x/2+(y/2)*2];
 213             vptr[y*row_inc + x*3 + 1] = cb->g[x/2+(y/2)*2];
 214             vptr[y*row_inc + x*3 + 2] = cb->r[x/2+(y/2)*2];
 215         }
 216     }
 217 }
 218
 219
 220 /* ------------------------------------------------------------------------ */
 221 static void cvid_v4_24(unsigned char *vptr, unsigned char *limit, int stride, cvid_codebook *cb0,
 222     cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3)
 223 {
 224 #ifndef ORIGINAL
 225 int row_inc = -stride;
 226 #else
 227 int row_inc = stride;
 228 #endif
 229 cvid_codebook * cb[] = {cb0,cb1,cb2,cb3};
 230 int x, y;
 231
 232     /* fill 4x4 block of pixels with colour values from codebooks */
 233     for (y = 0; y < 4; y++)
 234     {
 235         if (&vptr[y*row_inc] < limit) return;
 236         for (x = 0; x < 4; x++)
 237         {
 238             vptr[y*row_inc + x*3 + 0] = cb[x/2+(y/2)*2]->b[x%2+(y%2)*2];
 239             vptr[y*row_inc + x*3 + 1] = cb[x/2+(y/2)*2]->g[x%2+(y%2)*2];
 240             vptr[y*row_inc + x*3 + 2] = cb[x/2+(y/2)*2]->r[x%2+(y%2)*2];
 241         }
 242     }
 243 }
 244
 245
 246 /* ------------------------------------------------------------------------ */
 247 static void cvid_v1_16(unsigned char *frm, unsigned char *limit, int stride, cvid_codebook *cb)
 248 {
 249 unsigned short *vptr = (unsigned short *)frm;
 250 #ifndef ORIGINAL
 251 int row_inc = -stride/2;
 252 #else
 253 int row_inc = stride/2;
 254 #endif
 255 int x, y;
 256
 257     /* fill 4x4 block of pixels with colour values from codebook */
 258     for (y = 0; y < 4; y++)
 259     {
 260         if (&vptr[y*row_inc] < (unsigned short *)limit) return;
 261         for (x = 0; x < 4; x++)
 262             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]);
 263     }
 264 }
 265
 266
 267 /* ------------------------------------------------------------------------ */
 268 static void cvid_v4_16(unsigned char *frm, unsigned char *limit, int stride, cvid_codebook *cb0,
 269     cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3)
 270 {
 271 unsigned short *vptr = (unsigned short *)frm;
 272 #ifndef ORIGINAL
 273 int row_inc = -stride/2;
 274 #else
 275 int row_inc = stride/2;
 276 #endif
 277 cvid_codebook * cb[] = {cb0,cb1,cb2,cb3};
 278 int x, y;
 279
 280     /* fill 4x4 block of pixels with colour values from codebooks */
 281     for (y = 0; y < 4; y++)
 282     {
 283         if (&vptr[y*row_inc] < (unsigned short *)limit) return;
 284         for (x = 0; x < 4; x++)
 285             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]);
 286     }
 287 }
 288
 289 /* ------------------------------------------------------------------------ */
 290 static void cvid_v1_15(unsigned char *frm, unsigned char *limit, int stride, cvid_codebook *cb)
 291 {
 292 unsigned short *vptr = (unsigned short *)frm;
 293 #ifndef ORIGINAL
 294 int row_inc = -stride/2;
 295 #else
 296 int row_inc = stride/2;
 297 #endif
 298 int x, y;
 299
 300     /* fill 4x4 block of pixels with colour values from codebook */
 301     for (y = 0; y < 4; y++)
 302     {
 303         if (&vptr[y*row_inc] < (unsigned short *)limit) return;
 304         for (x = 0; x < 4; x++)
 305             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]);
 306     }
 307 }
 308
 309
 310 /* ------------------------------------------------------------------------ */
 311 static void cvid_v4_15(unsigned char *frm, unsigned char *limit, int stride, cvid_codebook *cb0,
 312     cvid_codebook *cb1, cvid_codebook *cb2, cvid_codebook *cb3)
 313 {
 314 unsigned short *vptr = (unsigned short *)frm;
 315 #ifndef ORIGINAL
 316 int row_inc = -stride/2;
 317 #else
 318 int row_inc = stride/2;
 319 #endif
 320 cvid_codebook * cb[] = {cb0,cb1,cb2,cb3};
 321 int x, y;
 322
 323     /* fill 4x4 block of pixels with colour values from codebooks */
 324     for (y = 0; y < 4; y++)
 325     {
 326         if (&vptr[y*row_inc] < (unsigned short *)limit) return;
 327         for (x = 0; x < 4; x++)
 328             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]);
 329     }
 330 }
 331
 332
 333 /* ------------------------------------------------------------------------
 334  * Call this function once at the start of the sequence and save the
 335  * returned context for calls to decode_cinepak().
 336  */
 337 static cinepak_info *decode_cinepak_init(void)
 338 {
 339     cinepak_info *cvinfo;
 340     int i;
 341
 342     cvinfo = heap_alloc( sizeof (cinepak_info) );
 343     if( !cvinfo )
 344         return NULL;
 345     cvinfo->strip_num = 0;
 346
 347     if(uiclp == NULL)
 348     {
 349         uiclp = uiclip+512;
 350         for(i = -512; i < 512; i++)
 351             uiclp[i] = (i < 0 ? 0 : (i > 255 ? 255 : i));
 352     }
 353
 354     return cvinfo;
 355 }
 356
 357 static void free_cvinfo( cinepak_info *cvinfo )
 358 {
 359     unsigned int i;
 360
 361     for( i=0; i<cvinfo->strip_num; i++ )
 362     {
 363         heap_free(cvinfo->v4_codebook[i]);
 364         heap_free(cvinfo->v1_codebook[i]);
 365     }
 366     heap_free( cvinfo );
 367 }
 368
 369 typedef void (*fn_cvid_v1)(unsigned char *frm, unsigned char *limit,
 370                            int stride, cvid_codebook *cb);
 371 typedef void (*fn_cvid_v4)(unsigned char *frm, unsigned char *limit, int stride,
 372                            cvid_codebook *cb0, cvid_codebook *cb1,
 373                            cvid_codebook *cb2, cvid_codebook *cb3);
 374
 375 /* ------------------------------------------------------------------------
 376  * This function decodes a buffer containing a Cinepak encoded frame.
 377  *
 378  * context - the context created by decode_cinepak_init().
 379  * buf - the input buffer to be decoded
 380  * size - the size of the input buffer
 381  * frame - the output frame buffer (24 or 32 bit per pixel)
 382  * width - the width of the output frame
 383  * height - the height of the output frame
 384  * bit_per_pixel - the number of bits per pixel allocated to the output
 385  *   frame (only 24 or 32 bpp are supported)
 386  */
 387 static void decode_cinepak(cinepak_info *cvinfo, unsigned char *buf, int size,
 388            unsigned char *frame, unsigned int width, unsigned int height, int bit_per_pixel)
 389 {
 390     cvid_codebook *v4_codebook, *v1_codebook, *codebook = NULL;
 391     unsigned long x, y, y_bottom, frame_flags, strips, cv_width, cv_height,
 392                   cnum, strip_id, chunk_id, x0, y0, x1, y1, ci, flag, mask;
 393     long len, top_size, chunk_size;
 394     unsigned char *frm_ptr;
 395     unsigned int i, cur_strip;
 396     int d0, d1, d2, d3, frm_stride, bpp = 3;
 397     fn_cvid_v1 cvid_v1 = cvid_v1_24;
 398     fn_cvid_v4 cvid_v4 = cvid_v4_24;
 399
 400     y = 0;
 401     y_bottom = 0;
 402     in_buffer = buf;
 403
 404     frame_flags = get_byte();
 405     len = get_byte() << 16;
 406     len |= get_byte() << 8;
 407     len |= get_byte();
 408
 409     switch(bit_per_pixel)
 410         {
 411         case 15:
 412             bpp = 2;
 413             cvid_v1 = cvid_v1_15;
 414             cvid_v4 = cvid_v4_15;
 415             break;
 416         case 16:
 417             bpp = 2;
 418             cvid_v1 = cvid_v1_16;
 419             cvid_v4 = cvid_v4_16;
 420             break;
 421         case 24:
 422             bpp = 3;
 423             cvid_v1 = cvid_v1_24;
 424             cvid_v4 = cvid_v4_24;
 425             break;
 426         case 32:
 427             bpp = 4;
 428             cvid_v1 = cvid_v1_32;
 429             cvid_v4 = cvid_v4_32;
 430             break;
 431         }
 432
 433     frm_stride = width * bpp;
 434     frm_ptr = frame;
 435
 436     if(len != size)
 437         {
 438         if(len & 0x01) len++; /* AVIs tend to have a size mismatch */
 439         if(len != size)
 440             {
 441             ERR("CVID: corruption %d (QT/AVI) != %ld (CV)\n", size, len);
 442             /* return; */
 443             }
 444         }
 445
 446     cv_width = get_word();
 447     cv_height = get_word();
 448     strips = get_word();
 449
 450     if(strips > cvinfo->strip_num)
 451         {
 452         if(strips >= MAX_STRIPS)
 453             {
 454             ERR("CVID: strip overflow (more than %d)\n", MAX_STRIPS);
 455             return;
 456             }
 457
 458         for(i = cvinfo->strip_num; i < strips; i++)
 459             {
 460             if((cvinfo->v4_codebook[i] = heap_alloc(sizeof(cvid_codebook) * 260)) == NULL)
 461                 {
 462                 ERR("CVID: codebook v4 alloc err\n");
 463                 return;
 464                 }
 465
 466             if((cvinfo->v1_codebook[i] = heap_alloc(sizeof(cvid_codebook) * 260)) == NULL)
 467                 {
 468                 ERR("CVID: codebook v1 alloc err\n");
 469                 return;
 470                 }
 471             }
 472         }
 473     cvinfo->strip_num = strips;
 474
 475     TRACE("CVID: <%ld,%ld> strips %ld\n", cv_width, cv_height, strips);
 476
 477     for(cur_strip = 0; cur_strip < strips; cur_strip++)
 478         {
 479         v4_codebook = cvinfo->v4_codebook[cur_strip];
 480         v1_codebook = cvinfo->v1_codebook[cur_strip];
 481
 482         if((cur_strip > 0) && (!(frame_flags & 0x01)))
 483             {
 484             memcpy(cvinfo->v4_codebook[cur_strip], cvinfo->v4_codebook[cur_strip-1], 260 * sizeof(cvid_codebook));
 485             memcpy(cvinfo->v1_codebook[cur_strip], cvinfo->v1_codebook[cur_strip-1], 260 * sizeof(cvid_codebook));
 486             }
 487
 488         strip_id = get_word();        /* 1000 = key strip, 1100 = iter strip */
 489         top_size = get_word();
 490         y0 = get_word();        /* FIXME: most of these are ignored at the moment */
 491         x0 = get_word();
 492         y1 = get_word();
 493         x1 = get_word();
 494
 495         y_bottom += y1;
 496         top_size -= 12;
 497         x = 0;
 498         if(x1 != width)
 499             WARN("CVID: Warning x1 (%ld) != width (%d)\n", x1, width);
 500
 501         TRACE("   %d) %04lx %04ld <%ld,%ld> <%ld,%ld> yt %ld\n",
 502               cur_strip, strip_id, top_size, x0, y0, x1, y1, y_bottom);
 503
 504         while(top_size > 0)
 505             {
 506             chunk_id  = get_word();
 507             chunk_size = get_word();
 508
 509             TRACE("        %04lx %04ld\n", chunk_id, chunk_size);
 510             top_size -= chunk_size;
 511             chunk_size -= 4;
 512
 513             switch(chunk_id)
 514                 {
 515                     /* -------------------- Codebook Entries -------------------- */
 516                 case 0x2000:
 517                 case 0x2200:
 518                     codebook = (chunk_id == 0x2200 ? v1_codebook : v4_codebook);
 519                     cnum = chunk_size/6;
 520                     for(i = 0; i < cnum; i++) read_codebook(codebook+i, 0);
 521                     break;
 522
 523                 case 0x2400:
 524                 case 0x2600:        /* 8 bit per pixel */
 525                     codebook = (chunk_id == 0x2600 ? v1_codebook : v4_codebook);
 526                     cnum = chunk_size/4;
 527                     for(i = 0; i < cnum; i++) read_codebook(codebook+i, 1);
 528                     break;
 529
 530                 case 0x2100:
 531                 case 0x2300:
 532                     codebook = (chunk_id == 0x2300 ? v1_codebook : v4_codebook);
 533
 534                     ci = 0;
 535                     while(chunk_size > 0)
 536                         {
 537                         flag = get_long();
 538                         chunk_size -= 4;
 539
 540                         for(i = 0; i < 32; i++)
 541                             {
 542                             if(flag & 0x80000000)
 543                                 {
 544                                 chunk_size -= 6;
 545                                 read_codebook(codebook+ci, 0);
 546                                 }
 547
 548                             ci++;
 549                             flag <<= 1;
 550                             }
 551                         }
 552                     while(chunk_size > 0) { skip_byte(); chunk_size--; }
 553                     break;
 554
 555                 case 0x2500:
 556                 case 0x2700:        /* 8 bit per pixel */
 557                     codebook = (chunk_id == 0x2700 ? v1_codebook : v4_codebook);
 558
 559                     ci = 0;
 560                     while(chunk_size > 0)
 561                         {
 562                         flag = get_long();
 563                         chunk_size -= 4;
 564
 565                         for(i = 0; i < 32; i++)
 566                             {
 567                             if(flag & 0x80000000)
 568                                 {
 569                                 chunk_size -= 4;
 570                                 read_codebook(codebook+ci, 1);
 571                                 }
 572
 573                             ci++;
 574                             flag <<= 1;
 575                             }
 576                         }
 577                     while(chunk_size > 0) { skip_byte(); chunk_size--; }
 578                     break;
 579
 580                     /* -------------------- Frame -------------------- */
 581                 case 0x3000:
 582                     while((chunk_size > 0) && (y < y_bottom))
 583                         {
 584                         flag = get_long();
 585                         chunk_size -= 4;
 586
 587                         for(i = 0; i < 32; i++)
 588                             {
 589                             if(y >= y_bottom) break;
 590                             if(flag & 0x80000000)    /* 4 bytes per block */
 591                                 {
 592                                 d0 = get_byte();
 593                                 d1 = get_byte();
 594                                 d2 = get_byte();
 595                                 d3 = get_byte();
 596                                 chunk_size -= 4;
 597 #ifdef ORIGINAL
 598                                 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);
 599 #else
 600                                 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);
 601 #endif
 602                                 }
 603                             else        /* 1 byte per block */
 604                                 {
 605 #ifdef ORIGINAL
 606                                 cvid_v1(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v1_codebook + get_byte());
 607 #else
 608                                 cvid_v1(frm_ptr + ((height - 1 - y) * frm_stride + x * bpp), frame, frm_stride, v1_codebook + get_byte());
 609 #endif
 610                                 chunk_size--;
 611                                 }
 612
 613                             x += 4;
 614                             if(x >= width)
 615                                 {
 616                                 x = 0;
 617                                 y += 4;
 618                                 }
 619                             flag <<= 1;
 620                             }
 621                         }
 622                     while(chunk_size > 0) { skip_byte(); chunk_size--; }
 623                     break;
 624
 625                 case 0x3100:
 626                     while((chunk_size > 0) && (y < y_bottom))
 627                         {
 628                             /* ---- flag bits: 0 = SKIP, 10 = V1, 11 = V4 ---- */
 629                         flag = get_long();
 630                         chunk_size -= 4;
 631                         mask = 0x80000000;
 632
 633                         while((mask) && (y < y_bottom))
 634                             {
 635                             if(flag & mask)
 636                                 {
 637                                 if(mask == 1)
 638                                     {
 639                                     if(chunk_size < 0) break;
 640                                     flag = get_long();
 641                                     chunk_size -= 4;
 642                                     mask = 0x80000000;
 643                                     }
 644                                 else mask >>= 1;
 645
 646                                 if(flag & mask)        /* V4 */
 647                                     {
 648                                     d0 = get_byte();
 649                                     d1 = get_byte();
 650                                     d2 = get_byte();
 651                                     d3 = get_byte();
 652                                     chunk_size -= 4;
 653 #ifdef ORIGINAL
 654                                     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);
 655 #else
 656                                     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);
 657 #endif
 658                                     }
 659                                 else        /* V1 */
 660                                     {
 661                                     chunk_size--;
 662 #ifdef ORIGINAL
 663                                     cvid_v1(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v1_codebook + get_byte());
 664 #else
 665                                     cvid_v1(frm_ptr + ((height - 1 - y) * frm_stride + x * bpp), frame, frm_stride, v1_codebook + get_byte());
 666 #endif
 667                                     }
 668                                 }        /* else SKIP */
 669
 670                             mask >>= 1;
 671                             x += 4;
 672                             if(x >= width)
 673                                 {
 674                                 x = 0;
 675                                 y += 4;
 676                                 }
 677                             }
 678                         }
 679
 680                     while(chunk_size > 0) { skip_byte(); chunk_size--; }
 681                     break;
 682
 683                 case 0x3200:        /* each byte is a V1 codebook */
 684                     while((chunk_size > 0) && (y < y_bottom))
 685                         {
 686 #ifdef ORIGINAL
 687                         cvid_v1(frm_ptr + (y * frm_stride + x * bpp), frm_end, frm_stride, v1_codebook + get_byte());
 688 #else
 689                         cvid_v1(frm_ptr + ((height - 1 - y) * frm_stride + x * bpp), frame, frm_stride, v1_codebook + get_byte());
 690 #endif
 691                         chunk_size--;
 692                         x += 4;
 693                         if(x >= width)
 694                             {
 695                             x = 0;
 696                             y += 4;
 697                             }
 698                         }
 699                     while(chunk_size > 0) { skip_byte(); chunk_size--; }
 700                     break;
 701
 702                 default:
 703                     ERR("CVID: unknown chunk_id %08lx\n", chunk_id);
 704                     while(chunk_size > 0) { skip_byte(); chunk_size--; }
 705                     break;
 706                 }
 707             }
 708         }
 709
 710     if(len != size)
 711         {
 712         if(len & 0x01) len++; /* AVIs tend to have a size mismatch */
 713         if(len != size)
 714             {
 715             long xlen;
 716             skip_byte();
 717             xlen = get_byte() << 16;
 718             xlen |= get_byte() << 8;
 719             xlen |= get_byte(); /* Read Len */
 720             WARN("CVID: END INFO chunk size %d cvid size1 %ld cvid size2 %ld\n",
 721                   size, len, xlen);
 722             }
 723         }
 724 }
 725
 726 static void ICCVID_dump_BITMAPINFO(const BITMAPINFO * bmi)
 727 {
 728     TRACE(
 729         "planes = %d\n"
 730         "bpp    = %d\n"
 731         "height = %d\n"
 732         "width  = %d\n"
 733         "compr  = %s\n",
 734         bmi->bmiHeader.biPlanes,
 735         bmi->bmiHeader.biBitCount,
 736         bmi->bmiHeader.biHeight,
 737         bmi->bmiHeader.biWidth,
 738         debugstr_an( (const char *)&bmi->bmiHeader.biCompression, 4 ) );
 739 }
 740
 741 static inline int ICCVID_CheckMask(RGBQUAD bmiColors[3], COLORREF redMask, COLORREF blueMask, COLORREF greenMask)
 742 {
 743     COLORREF realRedMask = MAKECOLOUR32(bmiColors[0].rgbRed, bmiColors[0].rgbGreen, bmiColors[0].rgbBlue);
 744     COLORREF realBlueMask = MAKECOLOUR32(bmiColors[1].rgbRed, bmiColors[1].rgbGreen, bmiColors[1].rgbBlue);
 745     COLORREF realGreenMask = MAKECOLOUR32(bmiColors[2].rgbRed, bmiColors[2].rgbGreen, bmiColors[2].rgbBlue);
 746
 747     TRACE("\nbmiColors[0] = 0x%08x\nbmiColors[1] = 0x%08x\nbmiColors[2] = 0x%08x\n",
 748         realRedMask, realBlueMask, realGreenMask);
 749
 750     if ((realRedMask == redMask) &&
 751         (realBlueMask == blueMask) &&
 752         (realGreenMask == greenMask))
 753         return TRUE;
 754     return FALSE;
 755 }
 756
 757 static LRESULT ICCVID_DecompressQuery( ICCVID_Info *info, LPBITMAPINFO in, LPBITMAPINFO out )
 758 {
 759     TRACE("ICM_DECOMPRESS_QUERY %p %p %p\n", info, in, out);
 760
 761     if( (info==NULL) || (info->dwMagic!=ICCVID_MAGIC) )
 762         return ICERR_BADPARAM;
 763
 764     TRACE("in: ");
 765     ICCVID_dump_BITMAPINFO(in);
 766
 767     if( in->bmiHeader.biCompression != ICCVID_MAGIC )
 768         return ICERR_BADFORMAT;
 769
 770     if( out )
 771     {
 772         TRACE("out: ");
 773         ICCVID_dump_BITMAPINFO(out);
 774
 775         if( in->bmiHeader.biPlanes != out->bmiHeader.biPlanes )
 776             return ICERR_BADFORMAT;
 777         if( in->bmiHeader.biHeight != out->bmiHeader.biHeight )
 778             return ICERR_BADFORMAT;
 779         if( in->bmiHeader.biWidth != out->bmiHeader.biWidth )
 780             return ICERR_BADFORMAT;
 781
 782         switch( out->bmiHeader.biBitCount )
 783         {
 784         case 16:
 785             if ( out->bmiHeader.biCompression == BI_BITFIELDS )
 786             {
 787                 if ( !ICCVID_CheckMask(out->bmiColors, 0x7C00, 0x03E0, 0x001F) &&
 788                      !ICCVID_CheckMask(out->bmiColors, 0xF800, 0x07E0, 0x001F) )
 789                 {
 790                     TRACE("unsupported output bit field(s) for 16-bit colors\n");
 791                     return ICERR_BADFORMAT;
 792                 }
 793             }
 794             break;
 795         case 24:
 796         case 32:
 797             break;
 798         default:
 799             TRACE("unsupported output bitcount = %d\n", out->bmiHeader.biBitCount );
 800             return ICERR_BADFORMAT;
 801         }
 802     }
 803
 804     return ICERR_OK;
 805 }
 806
 807 static LRESULT ICCVID_DecompressGetFormat( ICCVID_Info *info, LPBITMAPINFO in, LPBITMAPINFO out )
 808 {
 809     DWORD size;
 810
 811     TRACE("ICM_DECOMPRESS_GETFORMAT %p %p %p\n", info, in, out);
 812
 813     if( (info==NULL) || (info->dwMagic!=ICCVID_MAGIC) )
 814         return ICERR_BADPARAM;
 815
 816     size = in->bmiHeader.biSize;
 817     if (in->bmiHeader.biBitCount <= 8)
 818         size += in->bmiHeader.biClrUsed * sizeof(RGBQUAD);
 819
 820     if( out )
 821     {
 822         memcpy( out, in, size );
 823         out->bmiHeader.biCompression = BI_RGB;
 824         out->bmiHeader.biSizeImage = in->bmiHeader.biHeight
 825                                    * in->bmiHeader.biWidth *4;
 826         return ICERR_OK;
 827     }
 828     return size;
 829 }
 830
 831 static LRESULT ICCVID_DecompressBegin( ICCVID_Info *info, LPBITMAPINFO in, LPBITMAPINFO out )
 832 {
 833     TRACE("ICM_DECOMPRESS_BEGIN %p %p %p\n", info, in, out);
 834
 835     if( (info==NULL) || (info->dwMagic!=ICCVID_MAGIC) )
 836         return ICERR_BADPARAM;
 837
 838     info->bits_per_pixel = out->bmiHeader.biBitCount;
 839
 840     if (info->bits_per_pixel == 16)
 841     {
 842         if ( out->bmiHeader.biCompression == BI_BITFIELDS )
 843         {
 844             if ( ICCVID_CheckMask(out->bmiColors, 0x7C00, 0x03E0, 0x001F) )
 845                 info->bits_per_pixel = 15;
 846             else if ( ICCVID_CheckMask(out->bmiColors, 0xF800, 0x07E0, 0x001F) )
 847                 info->bits_per_pixel = 16;
 848             else
 849             {
 850                 TRACE("unsupported output bit field(s) for 16-bit colors\n");
 851                 return ICERR_UNSUPPORTED;
 852             }
 853         }
 854         else
 855             info->bits_per_pixel = 15;
 856     }
 857
 858     TRACE("bit_per_pixel = %d\n", info->bits_per_pixel);
 859
 860     if( info->cvinfo )
 861         free_cvinfo( info->cvinfo );
 862     info->cvinfo = decode_cinepak_init();
 863
 864     return ICERR_OK;
 865 }
 866
 867 static LRESULT ICCVID_Decompress( ICCVID_Info *info, ICDECOMPRESS *icd, DWORD size )
 868 {
 869     LONG width, height;
 870
 871     TRACE("ICM_DECOMPRESS %p %p %d\n", info, icd, size);
 872
 873     if( (info==NULL) || (info->dwMagic!=ICCVID_MAGIC) )
 874         return ICERR_BADPARAM;
 875     if (info->cvinfo==NULL)
 876     {
 877         ERR("ICM_DECOMPRESS sent after ICM_DECOMPRESS_END\n");
 878         return ICERR_BADPARAM;
 879     }
 880
 881     width  = icd->lpbiInput->biWidth;
 882     height = icd->lpbiInput->biHeight;
 883
 884     decode_cinepak(info->cvinfo, icd->lpInput, icd->lpbiInput->biSizeImage,
 885                    icd->lpOutput, width, height, info->bits_per_pixel);
 886
 887     return ICERR_OK;
 888 }
 889
 890 static LRESULT ICCVID_DecompressEx( ICCVID_Info *info, ICDECOMPRESSEX *icd, DWORD size )
 891 {
 892     LONG width, height;
 893
 894     TRACE("ICM_DECOMPRESSEX %p %p %d\n", info, icd, size);
 895
 896     if( (info==NULL) || (info->dwMagic!=ICCVID_MAGIC) )
 897         return ICERR_BADPARAM;
 898     if (info->cvinfo==NULL)
 899     {
 900         ERR("ICM_DECOMPRESSEX sent after ICM_DECOMPRESS_END\n");
 901         return ICERR_BADPARAM;
 902     }
 903
 904     /* FIXME: flags are ignored */
 905
 906     width  = icd->lpbiSrc->biWidth;
 907     height = icd->lpbiSrc->biHeight;
 908
 909     decode_cinepak(info->cvinfo, icd->lpSrc, icd->lpbiSrc->biSizeImage,
 910                    icd->lpDst, width, height, info->bits_per_pixel);
 911
 912     return ICERR_OK;
 913 }
 914
 915 static LRESULT ICCVID_Close( ICCVID_Info *info )
 916 {
 917     if( (info==NULL) || (info->dwMagic!=ICCVID_MAGIC) )
 918         return 0;
 919     if( info->cvinfo )
 920         free_cvinfo( info->cvinfo );
 921     heap_free( info );
 922     return 1;
 923 }
 924
 925 static LRESULT ICCVID_GetInfo( ICCVID_Info *info, ICINFO *icinfo, DWORD dwSize )
 926 {
 927     if (!icinfo) return sizeof(ICINFO);
 928     if (dwSize < sizeof(ICINFO)) return 0;
 929
 930     icinfo->dwSize = sizeof(ICINFO);
 931     icinfo->fccType = ICTYPE_VIDEO;
 932     icinfo->fccHandler = info ? info->dwMagic : ICCVID_MAGIC;
 933     icinfo->dwFlags = 0;
 934     icinfo->dwVersion = ICVERSION;
 935     icinfo->dwVersionICM = ICVERSION;
 936
 937     LoadStringW(ICCVID_hModule, IDS_NAME, icinfo->szName, sizeof(icinfo->szName)/sizeof(WCHAR));
 938     LoadStringW(ICCVID_hModule, IDS_DESCRIPTION, icinfo->szDescription, sizeof(icinfo->szDescription)/sizeof(WCHAR));
 939     /* msvfw32 will fill icinfo->szDriver for us */
 940
 941     return sizeof(ICINFO);
 942 }
 943
 944 static LRESULT ICCVID_DecompressEnd( ICCVID_Info *info )
 945 {
 946     if( info->cvinfo )
 947     {
 948         free_cvinfo( info->cvinfo );
 949         info->cvinfo = NULL;
 950     }
 951     return ICERR_OK;
 952 }
 953
 954 LRESULT WINAPI ICCVID_DriverProc( DWORD_PTR dwDriverId, HDRVR hdrvr, UINT msg,
 955                                   LPARAM lParam1, LPARAM lParam2)
 956 {
 957     ICCVID_Info *info = (ICCVID_Info *) dwDriverId;
 958
 959     TRACE("%ld %p %d %ld %ld\n", dwDriverId, hdrvr, msg, lParam1, lParam2);
 960
 961     switch( msg )
 962     {
 963     case DRV_LOAD:
 964         TRACE("Loaded\n");
 965         return 1;
 966     case DRV_ENABLE:
 967         return 0;
 968     case DRV_DISABLE:
 969         return 0;
 970     case DRV_FREE:
 971         return 0;
 972
 973     case DRV_OPEN:
 974     {
 975         ICINFO *icinfo = (ICINFO *)lParam2;
 976
 977         TRACE("Opened\n");
 978
 979         if (icinfo && compare_fourcc(icinfo->fccType, ICTYPE_VIDEO)) return 0;
 980
 981         info = heap_alloc( sizeof (ICCVID_Info) );
 982         if( info )
 983         {
 984             info->dwMagic = ICCVID_MAGIC;
 985             info->cvinfo = NULL;
 986         }
 987         return (LRESULT) info;
 988     }
 989
 990     case DRV_CLOSE:
 991         return ICCVID_Close( info );
 992
 993     case ICM_GETINFO:
 994         return ICCVID_GetInfo( info, (ICINFO *)lParam1, (DWORD)lParam2 );
 995
 996     case ICM_DECOMPRESS_QUERY:
 997         return ICCVID_DecompressQuery( info, (LPBITMAPINFO) lParam1,
 998                                        (LPBITMAPINFO) lParam2 );
 999     case ICM_DECOMPRESS_GET_FORMAT:
1000         return ICCVID_DecompressGetFormat( info, (LPBITMAPINFO) lParam1,
1001                                        (LPBITMAPINFO) lParam2 );
1002     case ICM_DECOMPRESS_BEGIN:
1003         return ICCVID_DecompressBegin( info, (LPBITMAPINFO) lParam1,
1004                                        (LPBITMAPINFO) lParam2 );
1005     case ICM_DECOMPRESS:
1006         return ICCVID_Decompress( info, (ICDECOMPRESS*) lParam1,
1007                                   (DWORD) lParam2 );
1008     case ICM_DECOMPRESSEX:
1009         return ICCVID_DecompressEx( info, (ICDECOMPRESSEX*) lParam1,
1010                                   (DWORD) lParam2 );
1011
1012     case ICM_DECOMPRESS_END:
1013         return ICCVID_DecompressEnd( info );
1014
1015     case ICM_COMPRESS_QUERY:
1016         FIXME("compression not implemented\n");
1017         return ICERR_BADFORMAT;
1018
1019     case ICM_CONFIGURE:
1020         return ICERR_UNSUPPORTED;
1021
1022     default:
1023         FIXME("Unknown message: %04x %ld %ld\n", msg, lParam1, lParam2);
1024     }
1025     return ICERR_UNSUPPORTED;
1026 }
1027
1028 BOOL WINAPI DllMain(HINSTANCE hModule, DWORD dwReason, LPVOID lpReserved)
1029 {
1030     TRACE("(%p,%d,%p)\n", hModule, dwReason, lpReserved);
1031
1032     switch (dwReason)
1033     {
1034     case DLL_PROCESS_ATTACH:
1035         DisableThreadLibraryCalls(hModule);
1036         ICCVID_hModule = hModule;
1037         break;
1038
1039     case DLL_PROCESS_DETACH:
1040         break;
1041     }
1042     return TRUE;
1043 }