dlls/windowscodecs/palette.c

   1 /*
   2  * Copyright 2009 Vincent Povirk for CodeWeavers
   3  * Copyright 2012 Dmitry Timoshkov
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "config.h"
  21
  22 #include <stdarg.h>
  23
  24 #define COBJMACROS
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winreg.h"
  29 #include "objbase.h"
  30 #include "wincodec.h"
  31
  32 #include "wincodecs_private.h"
  33
  34 #include "wine/debug.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
  37
  38 typedef struct {
  39     IWICPalette IWICPalette_iface;
  40     LONG ref;
  41     UINT count;
  42     WICColor *colors;
  43     WICBitmapPaletteType type;
  44     CRITICAL_SECTION lock; /* must be held when count, colors, or type is accessed */
  45 } PaletteImpl;
  46
  47 static inline PaletteImpl *impl_from_IWICPalette(IWICPalette *iface)
  48 {
  49     return CONTAINING_RECORD(iface, PaletteImpl, IWICPalette_iface);
  50 }
  51
  52 static HRESULT WINAPI PaletteImpl_QueryInterface(IWICPalette *iface, REFIID iid,
  53     void **ppv)
  54 {
  55     PaletteImpl *This = impl_from_IWICPalette(iface);
  56     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
  57
  58     if (!ppv) return E_INVALIDARG;
  59
  60     if (IsEqualIID(&IID_IUnknown, iid) || IsEqualIID(&IID_IWICPalette, iid))
  61     {
  62         *ppv = &This->IWICPalette_iface;
  63     }
  64     else
  65     {
  66         *ppv = NULL;
  67         return E_NOINTERFACE;
  68     }
  69
  70     IUnknown_AddRef((IUnknown*)*ppv);
  71     return S_OK;
  72 }
  73
  74 static ULONG WINAPI PaletteImpl_AddRef(IWICPalette *iface)
  75 {
  76     PaletteImpl *This = impl_from_IWICPalette(iface);
  77     ULONG ref = InterlockedIncrement(&This->ref);
  78
  79     TRACE("(%p) refcount=%u\n", iface, ref);
  80
  81     return ref;
  82 }
  83
  84 static ULONG WINAPI PaletteImpl_Release(IWICPalette *iface)
  85 {
  86     PaletteImpl *This = impl_from_IWICPalette(iface);
  87     ULONG ref = InterlockedDecrement(&This->ref);
  88
  89     TRACE("(%p) refcount=%u\n", iface, ref);
  90
  91     if (ref == 0)
  92     {
  93         This->lock.DebugInfo->Spare[0] = 0;
  94         DeleteCriticalSection(&This->lock);
  95         HeapFree(GetProcessHeap(), 0, This->colors);
  96         HeapFree(GetProcessHeap(), 0, This);
  97     }
  98
  99     return ref;
 100 }
 101
 102 static WICColor *generate_gray16_palette(UINT *count)
 103 {
 104     WICColor *entries;
 105     UINT i;
 106
 107     *count = 16;
 108     entries = HeapAlloc(GetProcessHeap(), 0, 16 * sizeof(WICColor));
 109     if (!entries) return NULL;
 110
 111     for (i = 0; i < 16; i++)
 112     {
 113         entries[i] = 0xff000000;
 114         entries[i] |= (i<<20) | (i<<16) | (i<<12) | (i<<8) | (i<<4) | i;
 115     }
 116     return entries;
 117 }
 118
 119 static WICColor *generate_gray256_palette(UINT *count)
 120 {
 121     WICColor *entries;
 122     UINT i;
 123
 124     *count = 256;
 125     entries = HeapAlloc(GetProcessHeap(), 0, 256 * sizeof(WICColor));
 126     if (!entries) return NULL;
 127
 128     for (i = 0; i < 256; i++)
 129     {
 130         entries[i] = 0xff000000;
 131         entries[i] |= (i<<16) | (i<<8) | i;
 132     }
 133     return entries;
 134 }
 135
 136 static WICColor *generate_halftone8_palette(UINT *count, BOOL add_transparent)
 137 {
 138     WICColor *entries;
 139     UINT i;
 140
 141     *count = add_transparent ? 17 : 16;
 142     entries = HeapAlloc(GetProcessHeap(), 0, *count * sizeof(WICColor));
 143     if (!entries) return NULL;
 144
 145     for (i = 0; i < 8; i++)
 146     {
 147         entries[i] = 0xff000000;
 148         if (i & 1) entries[i] |= 0xff;
 149         if (i & 2) entries[i] |= 0xff00;
 150         if (i & 4) entries[i] |= 0xff0000;
 151     }
 152
 153     for (i = 8; i < 16; i++)
 154     {
 155         static const DWORD halftone[8] = { 0xc0c0c0, 0x808080, 0x800000, 0x008000,
 156                                            0x000080, 0x808000, 0x800080, 0x008080 };
 157         entries[i] = 0xff000000;
 158         entries[i] |= halftone[i-8];
 159     }
 160
 161     if (add_transparent)
 162         entries[i] = 0;
 163
 164     return entries;
 165 }
 166
 167 static WICColor *generate_halftone27_palette(UINT *count, BOOL add_transparent)
 168 {
 169     WICColor *entries;
 170     UINT i;
 171
 172     *count = add_transparent ? 29 : 28;
 173     entries = HeapAlloc(GetProcessHeap(), 0, *count * sizeof(WICColor));
 174     if (!entries) return NULL;
 175
 176     for (i = 0; i < 27; i++)
 177     {
 178         static const BYTE halftone_values[4] = { 0x00,0x80,0xff };
 179         entries[i] = 0xff000000;
 180         entries[i] |= halftone_values[i%3];
 181         entries[i] |= halftone_values[(i/3)%3] << 8;
 182         entries[i] |= halftone_values[(i/9)%3] << 16;
 183     }
 184
 185     entries[i++] = 0xffc0c0c0;
 186     if (add_transparent)
 187         entries[i] = 0;
 188
 189     return entries;
 190 }
 191
 192 static WICColor *generate_halftone64_palette(UINT *count, BOOL add_transparent)
 193 {
 194     WICColor *entries;
 195     UINT i;
 196
 197     *count = add_transparent ? 73 : 72;
 198     entries = HeapAlloc(GetProcessHeap(), 0, *count * sizeof(WICColor));
 199     if (!entries) return NULL;
 200
 201     for (i = 0; i < 64; i++)
 202     {
 203         static const BYTE halftone_values[4] = { 0x00,0x55,0xaa,0xff };
 204         entries[i] = 0xff000000;
 205         entries[i] |= halftone_values[i%4];
 206         entries[i] |= halftone_values[(i/4)%4] << 8;
 207         entries[i] |= halftone_values[(i/16)%4] << 16;
 208     }
 209
 210     for (i = 64; i < 72; i++)
 211     {
 212         static const DWORD halftone[8] = { 0xc0c0c0, 0x808080, 0x800000, 0x008000,
 213                                            0x000080, 0x808000, 0x800080, 0x008080 };
 214         entries[i] = 0xff000000;
 215         entries[i] |= halftone[i-64];
 216     }
 217
 218     if (add_transparent)
 219         entries[i] = 0;
 220
 221     return entries;
 222 }
 223
 224 static WICColor *generate_halftone125_palette(UINT *count, BOOL add_transparent)
 225 {
 226     WICColor *entries;
 227     UINT i;
 228
 229     *count = add_transparent ? 127 : 126;
 230     entries = HeapAlloc(GetProcessHeap(), 0, *count * sizeof(WICColor));
 231     if (!entries) return NULL;
 232
 233     for (i = 0; i < 125; i++)
 234     {
 235         static const BYTE halftone_values[5] = { 0x00,0x40,0x80,0xbf,0xff };
 236         entries[i] = 0xff000000;
 237         entries[i] |= halftone_values[i%5];
 238         entries[i] |= halftone_values[(i/5)%5] << 8;
 239         entries[i] |= halftone_values[(i/25)%5] << 16;
 240     }
 241
 242     entries[i++] = 0xffc0c0c0;
 243     if (add_transparent)
 244         entries[i] = 0;
 245
 246     return entries;
 247 }
 248
 249 static WICColor *generate_halftone216_palette(UINT *count, BOOL add_transparent)
 250 {
 251     WICColor *entries;
 252     UINT i;
 253
 254     *count = add_transparent ? 225 : 224;
 255     entries = HeapAlloc(GetProcessHeap(), 0, *count * sizeof(WICColor));
 256     if (!entries) return NULL;
 257
 258     for (i = 0; i < 216; i++)
 259     {
 260         static const BYTE halftone_values[6] = { 0x00,0x33,0x66,0x99,0xcc,0xff };
 261         entries[i] = 0xff000000;
 262         entries[i] |= halftone_values[i%6];
 263         entries[i] |= halftone_values[(i/6)%6] << 8;
 264         entries[i] |= halftone_values[(i/36)%6] << 16;
 265     }
 266
 267     for (i = 216; i < 224; i++)
 268     {
 269         static const DWORD halftone[8] = { 0xc0c0c0, 0x808080, 0x800000, 0x008000,
 270                                            0x000080, 0x808000, 0x800080, 0x008080 };
 271         entries[i] = 0xff000000;
 272         entries[i] |= halftone[i-216];
 273     }
 274
 275     if (add_transparent)
 276         entries[i] = 0;
 277
 278     return entries;
 279 }
 280
 281 static WICColor *generate_halftone252_palette(UINT *count, BOOL add_transparent)
 282 {
 283     WICColor *entries;
 284     UINT i;
 285
 286     *count = add_transparent ? 253 : 252;
 287     entries = HeapAlloc(GetProcessHeap(), 0, *count * sizeof(WICColor));
 288     if (!entries) return NULL;
 289
 290     for (i = 0; i < 252; i++)
 291     {
 292         static const BYTE halftone_values_rb[6] = { 0x00,0x33,0x66,0x99,0xcc,0xff };
 293         static const BYTE halftone_values_g[7] = { 0x00,0x2b,0x55,0x80,0xaa,0xd5,0xff };
 294         entries[i] = 0xff000000;
 295         entries[i] |= halftone_values_rb[i%6];
 296         entries[i] |= halftone_values_g[(i/6)%7] << 8;
 297         entries[i] |= halftone_values_rb[(i/42)%6] << 16;
 298     }
 299
 300     if (add_transparent)
 301         entries[i] = 0;
 302
 303     return entries;
 304 }
 305
 306 static WICColor *generate_halftone256_palette(UINT *count, BOOL add_transparent)
 307 {
 308     WICColor *entries;
 309     UINT i;
 310
 311     *count = 256;
 312     entries = HeapAlloc(GetProcessHeap(), 0, 256 * sizeof(WICColor));
 313     if (!entries) return NULL;
 314
 315     for (i = 0; i < 256; i++)
 316     {
 317         static const BYTE halftone_values_b[4] = { 0x00,0x55,0xaa,0xff };
 318         static const BYTE halftone_values_gr[8] = { 0x00,0x24,0x49,0x6d,0x92,0xb6,0xdb,0xff };
 319         entries[i] = 0xff000000;
 320         entries[i] |= halftone_values_b[i%4];
 321         entries[i] |= halftone_values_gr[(i/4)%8] << 8;
 322         entries[i] |= halftone_values_gr[(i/32)%8] << 16;
 323     }
 324
 325     if (add_transparent)
 326         entries[255] = 0;
 327
 328     return entries;
 329 }
 330
 331 static HRESULT WINAPI PaletteImpl_InitializePredefined(IWICPalette *iface,
 332     WICBitmapPaletteType type, BOOL add_transparent)
 333 {
 334     PaletteImpl *This = impl_from_IWICPalette(iface);
 335     WICColor *colors;
 336     UINT count;
 337
 338     TRACE("(%p,%u,%d)\n", iface, type, add_transparent);
 339
 340     switch (type)
 341     {
 342     case WICBitmapPaletteTypeFixedBW:
 343         count = 2;
 344         colors = HeapAlloc(GetProcessHeap(), 0, count * sizeof(WICColor));
 345         if (!colors) return E_OUTOFMEMORY;
 346         colors[0] = 0xff000000;
 347         colors[1] = 0xffffffff;
 348         break;
 349
 350     case WICBitmapPaletteTypeFixedGray4:
 351         count = 4;
 352         colors = HeapAlloc(GetProcessHeap(), 0, count * sizeof(WICColor));
 353         if (!colors) return E_OUTOFMEMORY;
 354         colors[0] = 0xff000000;
 355         colors[1] = 0xff555555;
 356         colors[2] = 0xffaaaaaa;
 357         colors[3] = 0xffffffff;
 358         break;
 359
 360     case WICBitmapPaletteTypeFixedGray16:
 361         colors = generate_gray16_palette(&count);
 362         if (!colors) return E_OUTOFMEMORY;
 363         break;
 364
 365     case WICBitmapPaletteTypeFixedGray256:
 366         colors = generate_gray256_palette(&count);
 367         if (!colors) return E_OUTOFMEMORY;
 368         break;
 369
 370     case WICBitmapPaletteTypeFixedHalftone8:
 371         colors = generate_halftone8_palette(&count, add_transparent);
 372         if (!colors) return E_OUTOFMEMORY;
 373         break;
 374
 375     case WICBitmapPaletteTypeFixedHalftone27:
 376         colors = generate_halftone27_palette(&count, add_transparent);
 377         if (!colors) return E_OUTOFMEMORY;
 378         break;
 379
 380     case WICBitmapPaletteTypeFixedHalftone64:
 381         colors = generate_halftone64_palette(&count, add_transparent);
 382         if (!colors) return E_OUTOFMEMORY;
 383         break;
 384
 385     case WICBitmapPaletteTypeFixedHalftone125:
 386         colors = generate_halftone125_palette(&count, add_transparent);
 387         if (!colors) return E_OUTOFMEMORY;
 388         break;
 389
 390     case WICBitmapPaletteTypeFixedHalftone216:
 391         colors = generate_halftone216_palette(&count, add_transparent);
 392         if (!colors) return E_OUTOFMEMORY;
 393         break;
 394
 395     case WICBitmapPaletteTypeFixedHalftone252:
 396         colors = generate_halftone252_palette(&count, add_transparent);
 397         if (!colors) return E_OUTOFMEMORY;
 398         break;
 399
 400     case WICBitmapPaletteTypeFixedHalftone256:
 401         colors = generate_halftone256_palette(&count, add_transparent);
 402         if (!colors) return E_OUTOFMEMORY;
 403         break;
 404
 405     default:
 406         WARN("invalid palette type %u\n", type);
 407         return E_INVALIDARG;
 408     }
 409
 410     EnterCriticalSection(&This->lock);
 411     HeapFree(GetProcessHeap(), 0, This->colors);
 412     This->colors = colors;
 413     This->count = count;
 414     This->type = type;
 415     LeaveCriticalSection(&This->lock);
 416
 417     return S_OK;
 418 }
 419
 420 static HRESULT WINAPI PaletteImpl_InitializeCustom(IWICPalette *iface,
 421     WICColor *pColors, UINT colorCount)
 422 {
 423     PaletteImpl *This = impl_from_IWICPalette(iface);
 424     WICColor *new_colors;
 425
 426     TRACE("(%p,%p,%u)\n", iface, pColors, colorCount);
 427
 428     if (colorCount == 0)
 429     {
 430         new_colors = NULL;
 431     }
 432     else
 433     {
 434         if (!pColors) return E_INVALIDARG;
 435         new_colors = HeapAlloc(GetProcessHeap(), 0, sizeof(WICColor) * colorCount);
 436         if (!new_colors) return E_OUTOFMEMORY;
 437         memcpy(new_colors, pColors, sizeof(WICColor) * colorCount);
 438     }
 439
 440     EnterCriticalSection(&This->lock);
 441     HeapFree(GetProcessHeap(), 0, This->colors);
 442     This->colors = new_colors;
 443     This->count = colorCount;
 444     This->type = WICBitmapPaletteTypeCustom;
 445     LeaveCriticalSection(&This->lock);
 446
 447     return S_OK;
 448 }
 449
 450 static HRESULT WINAPI PaletteImpl_InitializeFromBitmap(IWICPalette *iface,
 451     IWICBitmapSource *pISurface, UINT colorCount, BOOL fAddTransparentColor)
 452 {
 453     FIXME("(%p,%p,%u,%i): stub\n", iface, pISurface, colorCount, fAddTransparentColor);
 454     return E_NOTIMPL;
 455 }
 456
 457 static HRESULT WINAPI PaletteImpl_InitializeFromPalette(IWICPalette *iface,
 458     IWICPalette *source)
 459 {
 460     PaletteImpl *This = impl_from_IWICPalette(iface);
 461     UINT count;
 462     WICColor *colors = NULL;
 463     WICBitmapPaletteType type;
 464     HRESULT hr;
 465
 466     TRACE("(%p,%p)\n", iface, source);
 467
 468     if (!source) return E_INVALIDARG;
 469
 470     hr = IWICPalette_GetType(source, &type);
 471     if (hr != S_OK) return hr;
 472     hr = IWICPalette_GetColorCount(source, &count);
 473     if (hr != S_OK) return hr;
 474     if (count)
 475     {
 476         colors = HeapAlloc(GetProcessHeap(), 0, sizeof(WICColor) * count);
 477         if (!colors) return E_OUTOFMEMORY;
 478         hr = IWICPalette_GetColors(source, count, colors, &count);
 479         if (hr != S_OK)
 480         {
 481             HeapFree(GetProcessHeap(), 0, colors);
 482             return hr;
 483         }
 484     }
 485
 486     EnterCriticalSection(&This->lock);
 487     HeapFree(GetProcessHeap(), 0, This->colors);
 488     This->colors = colors;
 489     This->count = count;
 490     This->type = type;
 491     LeaveCriticalSection(&This->lock);
 492
 493     return S_OK;
 494 }
 495
 496 static HRESULT WINAPI PaletteImpl_GetType(IWICPalette *iface,
 497     WICBitmapPaletteType *pePaletteType)
 498 {
 499     PaletteImpl *This = impl_from_IWICPalette(iface);
 500
 501     TRACE("(%p,%p)\n", iface, pePaletteType);
 502
 503     if (!pePaletteType) return E_INVALIDARG;
 504
 505     EnterCriticalSection(&This->lock);
 506     *pePaletteType = This->type;
 507     LeaveCriticalSection(&This->lock);
 508
 509     return S_OK;
 510 }
 511
 512 static HRESULT WINAPI PaletteImpl_GetColorCount(IWICPalette *iface, UINT *pcCount)
 513 {
 514     PaletteImpl *This = impl_from_IWICPalette(iface);
 515
 516     TRACE("(%p,%p)\n", iface, pcCount);
 517
 518     if (!pcCount) return E_INVALIDARG;
 519
 520     EnterCriticalSection(&This->lock);
 521     *pcCount = This->count;
 522     LeaveCriticalSection(&This->lock);
 523
 524     return S_OK;
 525 }
 526
 527 static HRESULT WINAPI PaletteImpl_GetColors(IWICPalette *iface, UINT colorCount,
 528     WICColor *pColors, UINT *pcActualColors)
 529 {
 530     PaletteImpl *This = impl_from_IWICPalette(iface);
 531
 532     TRACE("(%p,%i,%p,%p)\n", iface, colorCount, pColors, pcActualColors);
 533
 534     if (!pColors || !pcActualColors) return E_INVALIDARG;
 535
 536     EnterCriticalSection(&This->lock);
 537
 538     if (This->count < colorCount) colorCount = This->count;
 539
 540     memcpy(pColors, This->colors, sizeof(WICColor) * colorCount);
 541
 542     *pcActualColors = colorCount;
 543
 544     LeaveCriticalSection(&This->lock);
 545
 546     return S_OK;
 547 }
 548
 549 static HRESULT WINAPI PaletteImpl_IsBlackWhite(IWICPalette *iface, BOOL *pfIsBlackWhite)
 550 {
 551     PaletteImpl *This = impl_from_IWICPalette(iface);
 552
 553     TRACE("(%p,%p)\n", iface, pfIsBlackWhite);
 554
 555     if (!pfIsBlackWhite) return E_INVALIDARG;
 556
 557     EnterCriticalSection(&This->lock);
 558     if (This->type == WICBitmapPaletteTypeFixedBW)
 559         *pfIsBlackWhite = TRUE;
 560     else
 561         *pfIsBlackWhite = FALSE;
 562     LeaveCriticalSection(&This->lock);
 563
 564     return S_OK;
 565 }
 566
 567 static HRESULT WINAPI PaletteImpl_IsGrayscale(IWICPalette *iface, BOOL *pfIsGrayscale)
 568 {
 569     PaletteImpl *This = impl_from_IWICPalette(iface);
 570
 571     TRACE("(%p,%p)\n", iface, pfIsGrayscale);
 572
 573     if (!pfIsGrayscale) return E_INVALIDARG;
 574
 575     EnterCriticalSection(&This->lock);
 576     switch(This->type)
 577     {
 578         case WICBitmapPaletteTypeFixedBW:
 579         case WICBitmapPaletteTypeFixedGray4:
 580         case WICBitmapPaletteTypeFixedGray16:
 581         case WICBitmapPaletteTypeFixedGray256:
 582             *pfIsGrayscale = TRUE;
 583             break;
 584         default:
 585             *pfIsGrayscale = FALSE;
 586     }
 587     LeaveCriticalSection(&This->lock);
 588
 589     return S_OK;
 590 }
 591
 592 static HRESULT WINAPI PaletteImpl_HasAlpha(IWICPalette *iface, BOOL *pfHasAlpha)
 593 {
 594     PaletteImpl *This = impl_from_IWICPalette(iface);
 595     UINT i;
 596
 597     TRACE("(%p,%p)\n", iface, pfHasAlpha);
 598
 599     if (!pfHasAlpha) return E_INVALIDARG;
 600
 601     *pfHasAlpha = FALSE;
 602
 603     EnterCriticalSection(&This->lock);
 604     for (i=0; i<This->count; i++)
 605         if ((This->colors[i]&0xff000000) != 0xff000000)
 606         {
 607             *pfHasAlpha = TRUE;
 608             break;
 609         }
 610     LeaveCriticalSection(&This->lock);
 611
 612     return S_OK;
 613 }
 614
 615 static const IWICPaletteVtbl PaletteImpl_Vtbl = {
 616     PaletteImpl_QueryInterface,
 617     PaletteImpl_AddRef,
 618     PaletteImpl_Release,
 619     PaletteImpl_InitializePredefined,
 620     PaletteImpl_InitializeCustom,
 621     PaletteImpl_InitializeFromBitmap,
 622     PaletteImpl_InitializeFromPalette,
 623     PaletteImpl_GetType,
 624     PaletteImpl_GetColorCount,
 625     PaletteImpl_GetColors,
 626     PaletteImpl_IsBlackWhite,
 627     PaletteImpl_IsGrayscale,
 628     PaletteImpl_HasAlpha
 629 };
 630
 631 HRESULT PaletteImpl_Create(IWICPalette **palette)
 632 {
 633     PaletteImpl *This;
 634
 635     This = HeapAlloc(GetProcessHeap(), 0, sizeof(PaletteImpl));
 636     if (!This) return E_OUTOFMEMORY;
 637
 638     This->IWICPalette_iface.lpVtbl = &PaletteImpl_Vtbl;
 639     This->ref = 1;
 640     This->count = 0;
 641     This->colors = NULL;
 642     This->type = WICBitmapPaletteTypeCustom;
 643     InitializeCriticalSection(&This->lock);
 644     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": PaletteImpl.lock");
 645
 646     *palette = &This->IWICPalette_iface;
 647
 648     return S_OK;
 649 }