dlls/windowscodecs/tiffformat.c

   1 /*
   2  * Copyright 2010 Vincent Povirk for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20 #include "wine/port.h"
  21
  22 #include <stdarg.h>
  23 #ifdef HAVE_UNISTD_H
  24 #include <unistd.h>
  25 #endif
  26 #ifdef HAVE_TIFFIO_H
  27 #include <tiffio.h>
  28 #endif
  29
  30 #define COBJMACROS
  31
  32 #include "windef.h"
  33 #include "winbase.h"
  34 #include "objbase.h"
  35 #include "wincodec.h"
  36 #include "wincodecsdk.h"
  37
  38 #include "wincodecs_private.h"
  39
  40 #include "wine/debug.h"
  41 #include "wine/library.h"
  42
  43 WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
  44
  45 #ifdef SONAME_LIBTIFF
  46
  47 static CRITICAL_SECTION init_tiff_cs;
  48 static CRITICAL_SECTION_DEBUG init_tiff_cs_debug =
  49 {
  50     0, 0, &init_tiff_cs,
  51     { &init_tiff_cs_debug.ProcessLocksList,
  52       &init_tiff_cs_debug.ProcessLocksList },
  53     0, 0, { (DWORD_PTR)(__FILE__ ": init_tiff_cs") }
  54 };
  55 static CRITICAL_SECTION init_tiff_cs = { &init_tiff_cs_debug, -1, 0, 0, 0, 0 };
  56
  57 static const WCHAR wszTiffCompressionMethod[] = {'T','i','f','f','C','o','m','p','r','e','s','s','i','o','n','M','e','t','h','o','d',0};
  58 static const WCHAR wszCompressionQuality[] = {'C','o','m','p','r','e','s','s','i','o','n','Q','u','a','l','i','t','y',0};
  59
  60 static void *libtiff_handle;
  61 #define MAKE_FUNCPTR(f) static typeof(f) * p##f
  62 MAKE_FUNCPTR(TIFFClientOpen);
  63 MAKE_FUNCPTR(TIFFClose);
  64 MAKE_FUNCPTR(TIFFCurrentDirOffset);
  65 MAKE_FUNCPTR(TIFFGetField);
  66 MAKE_FUNCPTR(TIFFIsByteSwapped);
  67 MAKE_FUNCPTR(TIFFNumberOfDirectories);
  68 MAKE_FUNCPTR(TIFFReadDirectory);
  69 MAKE_FUNCPTR(TIFFReadEncodedStrip);
  70 MAKE_FUNCPTR(TIFFReadEncodedTile);
  71 MAKE_FUNCPTR(TIFFSetDirectory);
  72 MAKE_FUNCPTR(TIFFSetField);
  73 MAKE_FUNCPTR(TIFFWriteDirectory);
  74 MAKE_FUNCPTR(TIFFWriteScanline);
  75 #undef MAKE_FUNCPTR
  76
  77 static void *load_libtiff(void)
  78 {
  79     void *result;
  80
  81     EnterCriticalSection(&init_tiff_cs);
  82
  83     if (!libtiff_handle &&
  84         (libtiff_handle = wine_dlopen(SONAME_LIBTIFF, RTLD_NOW, NULL, 0)) != NULL)
  85     {
  86         void * (*pTIFFSetWarningHandler)(void *);
  87         void * (*pTIFFSetWarningHandlerExt)(void *);
  88
  89 #define LOAD_FUNCPTR(f) \
  90     if((p##f = wine_dlsym(libtiff_handle, #f, NULL, 0)) == NULL) { \
  91         ERR("failed to load symbol %s\n", #f); \
  92         libtiff_handle = NULL; \
  93         LeaveCriticalSection(&init_tiff_cs); \
  94         return NULL; \
  95     }
  96         LOAD_FUNCPTR(TIFFClientOpen);
  97         LOAD_FUNCPTR(TIFFClose);
  98         LOAD_FUNCPTR(TIFFCurrentDirOffset);
  99         LOAD_FUNCPTR(TIFFGetField);
 100         LOAD_FUNCPTR(TIFFIsByteSwapped);
 101         LOAD_FUNCPTR(TIFFNumberOfDirectories);
 102         LOAD_FUNCPTR(TIFFReadDirectory);
 103         LOAD_FUNCPTR(TIFFReadEncodedStrip);
 104         LOAD_FUNCPTR(TIFFReadEncodedTile);
 105         LOAD_FUNCPTR(TIFFSetDirectory);
 106         LOAD_FUNCPTR(TIFFSetField);
 107         LOAD_FUNCPTR(TIFFWriteDirectory);
 108         LOAD_FUNCPTR(TIFFWriteScanline);
 109 #undef LOAD_FUNCPTR
 110
 111         if ((pTIFFSetWarningHandler = wine_dlsym(libtiff_handle, "TIFFSetWarningHandler", NULL, 0)))
 112             pTIFFSetWarningHandler(NULL);
 113         if ((pTIFFSetWarningHandlerExt = wine_dlsym(libtiff_handle, "TIFFSetWarningHandlerExt", NULL, 0)))
 114             pTIFFSetWarningHandlerExt(NULL);
 115     }
 116
 117     result = libtiff_handle;
 118
 119     LeaveCriticalSection(&init_tiff_cs);
 120     return result;
 121 }
 122
 123 static tsize_t tiff_stream_read(thandle_t client_data, tdata_t data, tsize_t size)
 124 {
 125     IStream *stream = (IStream*)client_data;
 126     ULONG bytes_read;
 127     HRESULT hr;
 128
 129     hr = IStream_Read(stream, data, size, &bytes_read);
 130     if (FAILED(hr)) bytes_read = 0;
 131     return bytes_read;
 132 }
 133
 134 static tsize_t tiff_stream_write(thandle_t client_data, tdata_t data, tsize_t size)
 135 {
 136     IStream *stream = (IStream*)client_data;
 137     ULONG bytes_written;
 138     HRESULT hr;
 139
 140     hr = IStream_Write(stream, data, size, &bytes_written);
 141     if (FAILED(hr)) bytes_written = 0;
 142     return bytes_written;
 143 }
 144
 145 static toff_t tiff_stream_seek(thandle_t client_data, toff_t offset, int whence)
 146 {
 147     IStream *stream = (IStream*)client_data;
 148     LARGE_INTEGER move;
 149     DWORD origin;
 150     ULARGE_INTEGER new_position;
 151     HRESULT hr;
 152
 153     move.QuadPart = offset;
 154     switch (whence)
 155     {
 156         case SEEK_SET:
 157             origin = STREAM_SEEK_SET;
 158             break;
 159         case SEEK_CUR:
 160             origin = STREAM_SEEK_CUR;
 161             break;
 162         case SEEK_END:
 163             origin = STREAM_SEEK_END;
 164             break;
 165         default:
 166             ERR("unknown whence value %i\n", whence);
 167             return -1;
 168     }
 169
 170     hr = IStream_Seek(stream, move, origin, &new_position);
 171     if (SUCCEEDED(hr)) return new_position.QuadPart;
 172     else return -1;
 173 }
 174
 175 static int tiff_stream_close(thandle_t client_data)
 176 {
 177     /* Caller is responsible for releasing the stream object. */
 178     return 0;
 179 }
 180
 181 static toff_t tiff_stream_size(thandle_t client_data)
 182 {
 183     IStream *stream = (IStream*)client_data;
 184     STATSTG statstg;
 185     HRESULT hr;
 186
 187     hr = IStream_Stat(stream, &statstg, STATFLAG_NONAME);
 188
 189     if (SUCCEEDED(hr)) return statstg.cbSize.QuadPart;
 190     else return -1;
 191 }
 192
 193 static int tiff_stream_map(thandle_t client_data, tdata_t *addr, toff_t *size)
 194 {
 195     /* Cannot mmap streams */
 196     return 0;
 197 }
 198
 199 static void tiff_stream_unmap(thandle_t client_data, tdata_t addr, toff_t size)
 200 {
 201     /* No need to ever do this, since we can't map things. */
 202 }
 203
 204 static TIFF* tiff_open_stream(IStream *stream, const char *mode)
 205 {
 206     LARGE_INTEGER zero;
 207
 208     zero.QuadPart = 0;
 209     IStream_Seek(stream, zero, STREAM_SEEK_SET, NULL);
 210
 211     return pTIFFClientOpen("<IStream object>", mode, stream, tiff_stream_read,
 212         tiff_stream_write, tiff_stream_seek, tiff_stream_close,
 213         tiff_stream_size, tiff_stream_map, tiff_stream_unmap);
 214 }
 215
 216 typedef struct {
 217     IWICBitmapDecoder IWICBitmapDecoder_iface;
 218     LONG ref;
 219     IStream *stream;
 220     CRITICAL_SECTION lock; /* Must be held when tiff is used or initiailzed is set */
 221     TIFF *tiff;
 222     BOOL initialized;
 223 } TiffDecoder;
 224
 225 typedef struct {
 226     const WICPixelFormatGUID *format;
 227     int bps;
 228     int samples;
 229     int bpp;
 230     int planar;
 231     int indexed;
 232     int reverse_bgr;
 233     int invert_grayscale;
 234     UINT width, height;
 235     UINT tile_width, tile_height;
 236     UINT tile_stride;
 237     UINT tile_size;
 238     int tiled;
 239     UINT tiles_across;
 240     UINT resolution_unit;
 241     float xres, yres;
 242 } tiff_decode_info;
 243
 244 typedef struct {
 245     IWICBitmapFrameDecode IWICBitmapFrameDecode_iface;
 246     IWICMetadataBlockReader IWICMetadataBlockReader_iface;
 247     LONG ref;
 248     TiffDecoder *parent;
 249     UINT index;
 250     tiff_decode_info decode_info;
 251     INT cached_tile_x, cached_tile_y;
 252     BYTE *cached_tile;
 253 } TiffFrameDecode;
 254
 255 static const IWICBitmapFrameDecodeVtbl TiffFrameDecode_Vtbl;
 256 static const IWICMetadataBlockReaderVtbl TiffFrameDecode_BlockVtbl;
 257
 258 static inline TiffDecoder *impl_from_IWICBitmapDecoder(IWICBitmapDecoder *iface)
 259 {
 260     return CONTAINING_RECORD(iface, TiffDecoder, IWICBitmapDecoder_iface);
 261 }
 262
 263 static inline TiffFrameDecode *impl_from_IWICBitmapFrameDecode(IWICBitmapFrameDecode *iface)
 264 {
 265     return CONTAINING_RECORD(iface, TiffFrameDecode, IWICBitmapFrameDecode_iface);
 266 }
 267
 268 static inline TiffFrameDecode *impl_from_IWICMetadataBlockReader(IWICMetadataBlockReader *iface)
 269 {
 270     return CONTAINING_RECORD(iface, TiffFrameDecode, IWICMetadataBlockReader_iface);
 271 }
 272
 273 static HRESULT tiff_get_decode_info(TIFF *tiff, tiff_decode_info *decode_info)
 274 {
 275     uint16 photometric, bps, samples, planar;
 276     uint16 extra_sample_count, extra_sample, *extra_samples;
 277     int ret;
 278
 279     decode_info->indexed = 0;
 280     decode_info->reverse_bgr = 0;
 281     decode_info->invert_grayscale = 0;
 282     decode_info->tiled = 0;
 283
 284     ret = pTIFFGetField(tiff, TIFFTAG_PHOTOMETRIC, &photometric);
 285     if (!ret)
 286     {
 287         WARN("missing PhotometricInterpretation tag\n");
 288         return E_FAIL;
 289     }
 290
 291     ret = pTIFFGetField(tiff, TIFFTAG_BITSPERSAMPLE, &bps);
 292     if (!ret) bps = 1;
 293     decode_info->bps = bps;
 294
 295     ret = pTIFFGetField(tiff, TIFFTAG_SAMPLESPERPIXEL, &samples);
 296     if (!ret) samples = 1;
 297     decode_info->samples = samples;
 298
 299     if (samples == 1)
 300         planar = 1;
 301     else
 302     {
 303         ret = pTIFFGetField(tiff, TIFFTAG_PLANARCONFIG, &planar);
 304         if (!ret) planar = 1;
 305         if (planar != 1)
 306         {
 307             FIXME("unhandled planar configuration %u\n", planar);
 308             return E_FAIL;
 309         }
 310     }
 311     decode_info->planar = planar;
 312
 313     switch(photometric)
 314     {
 315     case 0: /* WhiteIsZero */
 316         decode_info->invert_grayscale = 1;
 317         /* fall through */
 318     case 1: /* BlackIsZero */
 319         if (samples != 1)
 320         {
 321             FIXME("unhandled grayscale sample count %u\n", samples);
 322             return E_FAIL;
 323         }
 324
 325         decode_info->bpp = bps;
 326         switch (bps)
 327         {
 328         case 1:
 329             decode_info->format = &GUID_WICPixelFormatBlackWhite;
 330             break;
 331         case 4:
 332             decode_info->format = &GUID_WICPixelFormat4bppGray;
 333             break;
 334         case 8:
 335             decode_info->format = &GUID_WICPixelFormat8bppGray;
 336             break;
 337         default:
 338             FIXME("unhandled greyscale bit count %u\n", bps);
 339             return E_FAIL;
 340         }
 341         break;
 342     case 2: /* RGB */
 343         decode_info->bpp = bps * samples;
 344
 345         if (samples == 4)
 346         {
 347             ret = pTIFFGetField(tiff, TIFFTAG_EXTRASAMPLES, &extra_sample_count, &extra_samples);
 348             if (!ret)
 349             {
 350                 extra_sample_count = 1;
 351                 extra_sample = 0;
 352                 extra_samples = &extra_sample;
 353             }
 354         }
 355         else if (samples != 3)
 356         {
 357             FIXME("unhandled RGB sample count %u\n", samples);
 358             return E_FAIL;
 359         }
 360
 361         switch(bps)
 362         {
 363         case 8:
 364             decode_info->reverse_bgr = 1;
 365             if (samples == 3)
 366                 decode_info->format = &GUID_WICPixelFormat24bppBGR;
 367             else
 368                 switch(extra_samples[0])
 369                 {
 370                 case 1: /* Associated (pre-multiplied) alpha data */
 371                     decode_info->format = &GUID_WICPixelFormat32bppPBGRA;
 372                     break;
 373                 case 0: /* Unspecified data */
 374                 case 2: /* Unassociated alpha data */
 375                     decode_info->format = &GUID_WICPixelFormat32bppBGRA;
 376                     break;
 377                 default:
 378                     FIXME("unhandled extra sample type %i\n", extra_samples[0]);
 379                     return E_FAIL;
 380                 }
 381             break;
 382         case 16:
 383             if (samples == 3)
 384                 decode_info->format = &GUID_WICPixelFormat48bppRGB;
 385             else
 386                 switch(extra_samples[0])
 387                 {
 388                 case 1: /* Associated (pre-multiplied) alpha data */
 389                     decode_info->format = &GUID_WICPixelFormat64bppPRGBA;
 390                     break;
 391                 case 0: /* Unspecified data */
 392                 case 2: /* Unassociated alpha data */
 393                     decode_info->format = &GUID_WICPixelFormat64bppRGBA;
 394                     break;
 395                 default:
 396                     FIXME("unhandled extra sample type %i\n", extra_samples[0]);
 397                     return E_FAIL;
 398                 }
 399             break;
 400         default:
 401             FIXME("unhandled RGB bit count %u\n", bps);
 402             return E_FAIL;
 403         }
 404         break;
 405     case 3: /* RGB Palette */
 406         if (samples != 1)
 407         {
 408             FIXME("unhandled indexed sample count %u\n", samples);
 409             return E_FAIL;
 410         }
 411
 412         decode_info->indexed = 1;
 413         decode_info->bpp = bps;
 414         switch (bps)
 415         {
 416         case 4:
 417             decode_info->format = &GUID_WICPixelFormat4bppIndexed;
 418             break;
 419         case 8:
 420             decode_info->format = &GUID_WICPixelFormat8bppIndexed;
 421             break;
 422         default:
 423             FIXME("unhandled indexed bit count %u\n", bps);
 424             return E_FAIL;
 425         }
 426         break;
 427     case 4: /* Transparency mask */
 428     case 5: /* CMYK */
 429     case 6: /* YCbCr */
 430     case 8: /* CIELab */
 431     default:
 432         FIXME("unhandled PhotometricInterpretation %u\n", photometric);
 433         return E_FAIL;
 434     }
 435
 436     ret = pTIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &decode_info->width);
 437     if (!ret)
 438     {
 439         WARN("missing image width\n");
 440         return E_FAIL;
 441     }
 442
 443     ret = pTIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &decode_info->height);
 444     if (!ret)
 445     {
 446         WARN("missing image length\n");
 447         return E_FAIL;
 448     }
 449
 450     if ((ret = pTIFFGetField(tiff, TIFFTAG_TILEWIDTH, &decode_info->tile_width)))
 451     {
 452         decode_info->tiled = 1;
 453
 454         ret = pTIFFGetField(tiff, TIFFTAG_TILELENGTH, &decode_info->tile_height);
 455         if (!ret)
 456         {
 457             WARN("missing tile height\n");
 458             return E_FAIL;
 459         }
 460
 461         decode_info->tile_stride = ((decode_info->bpp * decode_info->tile_width + 7)/8);
 462         decode_info->tile_size = decode_info->tile_height * decode_info->tile_stride;
 463         decode_info->tiles_across = (decode_info->width + decode_info->tile_width - 1) / decode_info->tile_width;
 464     }
 465     else if ((ret = pTIFFGetField(tiff, TIFFTAG_ROWSPERSTRIP, &decode_info->tile_height)))
 466     {
 467         if (decode_info->tile_height > decode_info->height)
 468             decode_info->tile_height = decode_info->height;
 469         decode_info->tile_width = decode_info->width;
 470         decode_info->tile_stride = ((decode_info->bpp * decode_info->tile_width + 7)/8);
 471         decode_info->tile_size = decode_info->tile_height * decode_info->tile_stride;
 472     }
 473     else
 474     {
 475         /* Some broken TIFF files have a single strip and lack the RowsPerStrip tag */
 476         decode_info->tile_height = decode_info->height;
 477         decode_info->tile_width = decode_info->width;
 478         decode_info->tile_stride = ((decode_info->bpp * decode_info->tile_width + 7)/8);
 479         decode_info->tile_size = decode_info->tile_height * decode_info->tile_stride;
 480     }
 481
 482     decode_info->resolution_unit = 0;
 483     pTIFFGetField(tiff, TIFFTAG_RESOLUTIONUNIT, &decode_info->resolution_unit);
 484     if (decode_info->resolution_unit != 0)
 485     {
 486         ret = pTIFFGetField(tiff, TIFFTAG_XRESOLUTION, &decode_info->xres);
 487         if (!ret)
 488         {
 489             WARN("missing X resolution\n");
 490             decode_info->resolution_unit = 0;
 491         }
 492
 493         ret = pTIFFGetField(tiff, TIFFTAG_YRESOLUTION, &decode_info->yres);
 494         if (!ret)
 495         {
 496             WARN("missing Y resolution\n");
 497             decode_info->resolution_unit = 0;
 498         }
 499     }
 500
 501     return S_OK;
 502 }
 503
 504 static HRESULT WINAPI TiffDecoder_QueryInterface(IWICBitmapDecoder *iface, REFIID iid,
 505     void **ppv)
 506 {
 507     TiffDecoder *This = impl_from_IWICBitmapDecoder(iface);
 508     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 509
 510     if (!ppv) return E_INVALIDARG;
 511
 512     if (IsEqualIID(&IID_IUnknown, iid) ||
 513         IsEqualIID(&IID_IWICBitmapDecoder, iid))
 514     {
 515         *ppv = &This->IWICBitmapDecoder_iface;
 516     }
 517     else
 518     {
 519         *ppv = NULL;
 520         return E_NOINTERFACE;
 521     }
 522
 523     IUnknown_AddRef((IUnknown*)*ppv);
 524     return S_OK;
 525 }
 526
 527 static ULONG WINAPI TiffDecoder_AddRef(IWICBitmapDecoder *iface)
 528 {
 529     TiffDecoder *This = impl_from_IWICBitmapDecoder(iface);
 530     ULONG ref = InterlockedIncrement(&This->ref);
 531
 532     TRACE("(%p) refcount=%u\n", iface, ref);
 533
 534     return ref;
 535 }
 536
 537 static ULONG WINAPI TiffDecoder_Release(IWICBitmapDecoder *iface)
 538 {
 539     TiffDecoder *This = impl_from_IWICBitmapDecoder(iface);
 540     ULONG ref = InterlockedDecrement(&This->ref);
 541
 542     TRACE("(%p) refcount=%u\n", iface, ref);
 543
 544     if (ref == 0)
 545     {
 546         if (This->tiff) pTIFFClose(This->tiff);
 547         if (This->stream) IStream_Release(This->stream);
 548         This->lock.DebugInfo->Spare[0] = 0;
 549         DeleteCriticalSection(&This->lock);
 550         HeapFree(GetProcessHeap(), 0, This);
 551     }
 552
 553     return ref;
 554 }
 555
 556 static HRESULT WINAPI TiffDecoder_QueryCapability(IWICBitmapDecoder *iface, IStream *stream,
 557     DWORD *capability)
 558 {
 559     HRESULT hr;
 560
 561     TRACE("(%p,%p,%p)\n", iface, stream, capability);
 562
 563     if (!stream || !capability) return E_INVALIDARG;
 564
 565     hr = IWICBitmapDecoder_Initialize(iface, stream, WICDecodeMetadataCacheOnDemand);
 566     if (hr != S_OK) return hr;
 567
 568     *capability = WICBitmapDecoderCapabilityCanDecodeAllImages |
 569                   WICBitmapDecoderCapabilityCanDecodeSomeImages |
 570                   WICBitmapDecoderCapabilityCanEnumerateMetadata;
 571     return S_OK;
 572 }
 573
 574 static HRESULT WINAPI TiffDecoder_Initialize(IWICBitmapDecoder *iface, IStream *pIStream,
 575     WICDecodeOptions cacheOptions)
 576 {
 577     TiffDecoder *This = impl_from_IWICBitmapDecoder(iface);
 578     TIFF *tiff;
 579     HRESULT hr=S_OK;
 580
 581     TRACE("(%p,%p,%x): stub\n", iface, pIStream, cacheOptions);
 582
 583     EnterCriticalSection(&This->lock);
 584
 585     if (This->initialized)
 586     {
 587         hr = WINCODEC_ERR_WRONGSTATE;
 588         goto exit;
 589     }
 590
 591     tiff = tiff_open_stream(pIStream, "r");
 592
 593     if (!tiff)
 594     {
 595         hr = E_FAIL;
 596         goto exit;
 597     }
 598
 599     This->tiff = tiff;
 600     This->stream = pIStream;
 601     IStream_AddRef(pIStream);
 602     This->initialized = TRUE;
 603
 604 exit:
 605     LeaveCriticalSection(&This->lock);
 606     return hr;
 607 }
 608
 609 static HRESULT WINAPI TiffDecoder_GetContainerFormat(IWICBitmapDecoder *iface,
 610     GUID *pguidContainerFormat)
 611 {
 612     if (!pguidContainerFormat) return E_INVALIDARG;
 613
 614     memcpy(pguidContainerFormat, &GUID_ContainerFormatTiff, sizeof(GUID));
 615     return S_OK;
 616 }
 617
 618 static HRESULT WINAPI TiffDecoder_GetDecoderInfo(IWICBitmapDecoder *iface,
 619     IWICBitmapDecoderInfo **ppIDecoderInfo)
 620 {
 621     HRESULT hr;
 622     IWICComponentInfo *compinfo;
 623
 624     TRACE("(%p,%p)\n", iface, ppIDecoderInfo);
 625
 626     hr = CreateComponentInfo(&CLSID_WICTiffDecoder, &compinfo);
 627     if (FAILED(hr)) return hr;
 628
 629     hr = IWICComponentInfo_QueryInterface(compinfo, &IID_IWICBitmapDecoderInfo,
 630         (void**)ppIDecoderInfo);
 631
 632     IWICComponentInfo_Release(compinfo);
 633
 634     return hr;
 635 }
 636
 637 static HRESULT WINAPI TiffDecoder_CopyPalette(IWICBitmapDecoder *iface,
 638     IWICPalette *pIPalette)
 639 {
 640     FIXME("(%p,%p): stub\n", iface, pIPalette);
 641     return E_NOTIMPL;
 642 }
 643
 644 static HRESULT WINAPI TiffDecoder_GetMetadataQueryReader(IWICBitmapDecoder *iface,
 645     IWICMetadataQueryReader **ppIMetadataQueryReader)
 646 {
 647     FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryReader);
 648     return E_NOTIMPL;
 649 }
 650
 651 static HRESULT WINAPI TiffDecoder_GetPreview(IWICBitmapDecoder *iface,
 652     IWICBitmapSource **ppIBitmapSource)
 653 {
 654     TRACE("(%p,%p)\n", iface, ppIBitmapSource);
 655
 656     if (!ppIBitmapSource) return E_INVALIDARG;
 657
 658     *ppIBitmapSource = NULL;
 659     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 660 }
 661
 662 static HRESULT WINAPI TiffDecoder_GetColorContexts(IWICBitmapDecoder *iface,
 663     UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
 664 {
 665     FIXME("(%p,%u,%p,%p)\n", iface, cCount, ppIColorContexts, pcActualCount);
 666     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 667 }
 668
 669 static HRESULT WINAPI TiffDecoder_GetThumbnail(IWICBitmapDecoder *iface,
 670     IWICBitmapSource **ppIThumbnail)
 671 {
 672     TRACE("(%p,%p)\n", iface, ppIThumbnail);
 673
 674     if (!ppIThumbnail) return E_INVALIDARG;
 675
 676     *ppIThumbnail = NULL;
 677     return WINCODEC_ERR_CODECNOTHUMBNAIL;
 678 }
 679
 680 static HRESULT WINAPI TiffDecoder_GetFrameCount(IWICBitmapDecoder *iface,
 681     UINT *pCount)
 682 {
 683     TiffDecoder *This = impl_from_IWICBitmapDecoder(iface);
 684
 685     if (!pCount) return E_INVALIDARG;
 686
 687     EnterCriticalSection(&This->lock);
 688     *pCount = This->tiff ? pTIFFNumberOfDirectories(This->tiff) : 0;
 689     LeaveCriticalSection(&This->lock);
 690
 691     TRACE("(%p) <-- %i\n", iface, *pCount);
 692
 693     return S_OK;
 694 }
 695
 696 static HRESULT WINAPI TiffDecoder_GetFrame(IWICBitmapDecoder *iface,
 697     UINT index, IWICBitmapFrameDecode **ppIBitmapFrame)
 698 {
 699     TiffDecoder *This = impl_from_IWICBitmapDecoder(iface);
 700     TiffFrameDecode *result;
 701     int res;
 702     tiff_decode_info decode_info;
 703     HRESULT hr;
 704
 705     TRACE("(%p,%u,%p)\n", iface, index, ppIBitmapFrame);
 706
 707     if (!This->tiff)
 708         return WINCODEC_ERR_FRAMEMISSING;
 709
 710     EnterCriticalSection(&This->lock);
 711     res = pTIFFSetDirectory(This->tiff, index);
 712     if (!res) hr = E_INVALIDARG;
 713     else hr = tiff_get_decode_info(This->tiff, &decode_info);
 714     LeaveCriticalSection(&This->lock);
 715
 716     if (SUCCEEDED(hr))
 717     {
 718         result = HeapAlloc(GetProcessHeap(), 0, sizeof(TiffFrameDecode));
 719
 720         if (result)
 721         {
 722             result->IWICBitmapFrameDecode_iface.lpVtbl = &TiffFrameDecode_Vtbl;
 723             result->IWICMetadataBlockReader_iface.lpVtbl = &TiffFrameDecode_BlockVtbl;
 724             result->ref = 1;
 725             result->parent = This;
 726             result->index = index;
 727             result->decode_info = decode_info;
 728             result->cached_tile_x = -1;
 729             result->cached_tile = HeapAlloc(GetProcessHeap(), 0, decode_info.tile_size);
 730
 731             if (result->cached_tile)
 732                 *ppIBitmapFrame = &result->IWICBitmapFrameDecode_iface;
 733             else
 734             {
 735                 hr = E_OUTOFMEMORY;
 736                 HeapFree(GetProcessHeap(), 0, result);
 737             }
 738         }
 739         else hr = E_OUTOFMEMORY;
 740     }
 741
 742     if (FAILED(hr)) *ppIBitmapFrame = NULL;
 743
 744     return hr;
 745 }
 746
 747 static const IWICBitmapDecoderVtbl TiffDecoder_Vtbl = {
 748     TiffDecoder_QueryInterface,
 749     TiffDecoder_AddRef,
 750     TiffDecoder_Release,
 751     TiffDecoder_QueryCapability,
 752     TiffDecoder_Initialize,
 753     TiffDecoder_GetContainerFormat,
 754     TiffDecoder_GetDecoderInfo,
 755     TiffDecoder_CopyPalette,
 756     TiffDecoder_GetMetadataQueryReader,
 757     TiffDecoder_GetPreview,
 758     TiffDecoder_GetColorContexts,
 759     TiffDecoder_GetThumbnail,
 760     TiffDecoder_GetFrameCount,
 761     TiffDecoder_GetFrame
 762 };
 763
 764 static HRESULT WINAPI TiffFrameDecode_QueryInterface(IWICBitmapFrameDecode *iface, REFIID iid,
 765     void **ppv)
 766 {
 767     TiffFrameDecode *This = impl_from_IWICBitmapFrameDecode(iface);
 768     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 769
 770     if (!ppv) return E_INVALIDARG;
 771
 772     if (IsEqualIID(&IID_IUnknown, iid) ||
 773         IsEqualIID(&IID_IWICBitmapSource, iid) ||
 774         IsEqualIID(&IID_IWICBitmapFrameDecode, iid))
 775     {
 776         *ppv = &This->IWICBitmapFrameDecode_iface;
 777     }
 778     else if (IsEqualIID(&IID_IWICMetadataBlockReader, iid))
 779     {
 780         *ppv = &This->IWICMetadataBlockReader_iface;
 781     }
 782     else
 783     {
 784         *ppv = NULL;
 785         return E_NOINTERFACE;
 786     }
 787
 788     IUnknown_AddRef((IUnknown*)*ppv);
 789     return S_OK;
 790 }
 791
 792 static ULONG WINAPI TiffFrameDecode_AddRef(IWICBitmapFrameDecode *iface)
 793 {
 794     TiffFrameDecode *This = impl_from_IWICBitmapFrameDecode(iface);
 795     ULONG ref = InterlockedIncrement(&This->ref);
 796
 797     TRACE("(%p) refcount=%u\n", iface, ref);
 798
 799     return ref;
 800 }
 801
 802 static ULONG WINAPI TiffFrameDecode_Release(IWICBitmapFrameDecode *iface)
 803 {
 804     TiffFrameDecode *This = impl_from_IWICBitmapFrameDecode(iface);
 805     ULONG ref = InterlockedDecrement(&This->ref);
 806
 807     TRACE("(%p) refcount=%u\n", iface, ref);
 808
 809     if (ref == 0)
 810     {
 811         HeapFree(GetProcessHeap(), 0, This->cached_tile);
 812         HeapFree(GetProcessHeap(), 0, This);
 813     }
 814
 815     return ref;
 816 }
 817
 818 static HRESULT WINAPI TiffFrameDecode_GetSize(IWICBitmapFrameDecode *iface,
 819     UINT *puiWidth, UINT *puiHeight)
 820 {
 821     TiffFrameDecode *This = impl_from_IWICBitmapFrameDecode(iface);
 822
 823     *puiWidth = This->decode_info.width;
 824     *puiHeight = This->decode_info.height;
 825
 826     TRACE("(%p) <-- %ux%u\n", iface, *puiWidth, *puiHeight);
 827
 828     return S_OK;
 829 }
 830
 831 static HRESULT WINAPI TiffFrameDecode_GetPixelFormat(IWICBitmapFrameDecode *iface,
 832     WICPixelFormatGUID *pPixelFormat)
 833 {
 834     TiffFrameDecode *This = impl_from_IWICBitmapFrameDecode(iface);
 835
 836     memcpy(pPixelFormat, This->decode_info.format, sizeof(GUID));
 837
 838     TRACE("(%p) <-- %s\n", This, debugstr_guid(This->decode_info.format));
 839
 840     return S_OK;
 841 }
 842
 843 static HRESULT WINAPI TiffFrameDecode_GetResolution(IWICBitmapFrameDecode *iface,
 844     double *pDpiX, double *pDpiY)
 845 {
 846     TiffFrameDecode *This = impl_from_IWICBitmapFrameDecode(iface);
 847
 848     switch (This->decode_info.resolution_unit)
 849     {
 850     default:
 851         FIXME("unknown resolution unit %i\n", This->decode_info.resolution_unit);
 852         /* fall through */
 853     case 0: /* Not set */
 854         *pDpiX = *pDpiY = 96.0;
 855         break;
 856     case 1: /* Relative measurements */
 857         *pDpiX = 96.0;
 858         *pDpiY = 96.0 * This->decode_info.yres / This->decode_info.xres;
 859         break;
 860     case 2: /* Inch */
 861         *pDpiX = This->decode_info.xres;
 862         *pDpiY = This->decode_info.yres;
 863         break;
 864     case 3: /* Centimeter */
 865         *pDpiX = This->decode_info.xres / 2.54;
 866         *pDpiY = This->decode_info.yres / 2.54;
 867         break;
 868     }
 869
 870     TRACE("(%p) <-- %f,%f unit=%i\n", iface, *pDpiX, *pDpiY, This->decode_info.resolution_unit);
 871
 872     return S_OK;
 873 }
 874
 875 static HRESULT WINAPI TiffFrameDecode_CopyPalette(IWICBitmapFrameDecode *iface,
 876     IWICPalette *pIPalette)
 877 {
 878     TiffFrameDecode *This = impl_from_IWICBitmapFrameDecode(iface);
 879     uint16 *red, *green, *blue;
 880     WICColor colors[256];
 881     int color_count, ret, i;
 882
 883     TRACE("(%p,%p)\n", iface, pIPalette);
 884
 885     color_count = 1<<This->decode_info.bps;
 886
 887     EnterCriticalSection(&This->parent->lock);
 888     ret = pTIFFGetField(This->parent->tiff, TIFFTAG_COLORMAP, &red, &green, &blue);
 889     LeaveCriticalSection(&This->parent->lock);
 890
 891     if (!ret)
 892     {
 893         WARN("Couldn't read color map\n");
 894         return WINCODEC_ERR_PALETTEUNAVAILABLE;
 895     }
 896
 897     for (i=0; i<color_count; i++)
 898     {
 899         colors[i] = 0xff000000 |
 900             ((red[i]<<8) & 0xff0000) |
 901             (green[i] & 0xff00) |
 902             ((blue[i]>>8) & 0xff);
 903     }
 904
 905     return IWICPalette_InitializeCustom(pIPalette, colors, color_count);
 906 }
 907
 908 static HRESULT TiffFrameDecode_ReadTile(TiffFrameDecode *This, UINT tile_x, UINT tile_y)
 909 {
 910     HRESULT hr=S_OK;
 911     tsize_t ret;
 912     int swap_bytes;
 913
 914     swap_bytes = pTIFFIsByteSwapped(This->parent->tiff);
 915
 916     ret = pTIFFSetDirectory(This->parent->tiff, This->index);
 917
 918     if (ret == -1)
 919         hr = E_FAIL;
 920
 921     if (hr == S_OK)
 922     {
 923         if (This->decode_info.tiled)
 924         {
 925             ret = pTIFFReadEncodedTile(This->parent->tiff, tile_x + tile_y * This->decode_info.tiles_across, This->cached_tile, This->decode_info.tile_size);
 926         }
 927         else
 928         {
 929             ret = pTIFFReadEncodedStrip(This->parent->tiff, tile_y, This->cached_tile, This->decode_info.tile_size);
 930         }
 931
 932         if (ret == -1)
 933             hr = E_FAIL;
 934     }
 935
 936     if (hr == S_OK && This->decode_info.reverse_bgr)
 937     {
 938         if (This->decode_info.bps == 8)
 939         {
 940             UINT sample_count = This->decode_info.samples;
 941
 942             reverse_bgr8(sample_count, This->cached_tile, This->decode_info.tile_width,
 943                 This->decode_info.tile_height, This->decode_info.tile_width * sample_count);
 944         }
 945     }
 946
 947     if (hr == S_OK && swap_bytes && This->decode_info.bps > 8)
 948     {
 949         UINT row, i, samples_per_row;
 950         BYTE *sample, temp;
 951
 952         samples_per_row = This->decode_info.tile_width * This->decode_info.samples;
 953
 954         switch(This->decode_info.bps)
 955         {
 956         case 16:
 957             for (row=0; row<This->decode_info.tile_height; row++)
 958             {
 959                 sample = This->cached_tile + row * This->decode_info.tile_stride;
 960                 for (i=0; i<samples_per_row; i++)
 961                 {
 962                     temp = sample[1];
 963                     sample[1] = sample[0];
 964                     sample[0] = temp;
 965                     sample += 2;
 966                 }
 967             }
 968             break;
 969         default:
 970             ERR("unhandled bps for byte swap %u\n", This->decode_info.bps);
 971             return E_FAIL;
 972         }
 973     }
 974
 975     if (hr == S_OK && This->decode_info.invert_grayscale)
 976     {
 977         BYTE *byte, *end;
 978
 979         if (This->decode_info.samples != 1)
 980         {
 981             ERR("cannot invert grayscale image with %u samples\n", This->decode_info.samples);
 982             return E_FAIL;
 983         }
 984
 985         end = This->cached_tile+This->decode_info.tile_size;
 986
 987         for (byte = This->cached_tile; byte != end; byte++)
 988             *byte = ~(*byte);
 989     }
 990
 991     if (hr == S_OK)
 992     {
 993         This->cached_tile_x = tile_x;
 994         This->cached_tile_y = tile_y;
 995     }
 996
 997     return hr;
 998 }
 999
1000 static HRESULT WINAPI TiffFrameDecode_CopyPixels(IWICBitmapFrameDecode *iface,
1001     const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
1002 {
1003     TiffFrameDecode *This = impl_from_IWICBitmapFrameDecode(iface);
1004     UINT min_tile_x, max_tile_x, min_tile_y, max_tile_y;
1005     UINT tile_x, tile_y;
1006     WICRect rc;
1007     HRESULT hr=S_OK;
1008     BYTE *dst_tilepos;
1009     UINT bytesperrow;
1010     WICRect rect;
1011
1012     TRACE("(%p,%p,%u,%u,%p)\n", iface, prc, cbStride, cbBufferSize, pbBuffer);
1013
1014     if (!prc)
1015     {
1016         rect.X = 0;
1017         rect.Y = 0;
1018         rect.Width = This->decode_info.width;
1019         rect.Height = This->decode_info.height;
1020         prc = &rect;
1021     }
1022     else
1023     {
1024         if (prc->X < 0 || prc->Y < 0 || prc->X+prc->Width > This->decode_info.width ||
1025             prc->Y+prc->Height > This->decode_info.height)
1026             return E_INVALIDARG;
1027     }
1028
1029     bytesperrow = ((This->decode_info.bpp * prc->Width)+7)/8;
1030
1031     if (cbStride < bytesperrow)
1032         return E_INVALIDARG;
1033
1034     if ((cbStride * prc->Height) > cbBufferSize)
1035         return E_INVALIDARG;
1036
1037     min_tile_x = prc->X / This->decode_info.tile_width;
1038     min_tile_y = prc->Y / This->decode_info.tile_height;
1039     max_tile_x = (prc->X+prc->Width-1) / This->decode_info.tile_width;
1040     max_tile_y = (prc->Y+prc->Height-1) / This->decode_info.tile_height;
1041
1042     EnterCriticalSection(&This->parent->lock);
1043
1044     for (tile_x=min_tile_x; tile_x <= max_tile_x; tile_x++)
1045     {
1046         for (tile_y=min_tile_y; tile_y <= max_tile_y; tile_y++)
1047         {
1048             if (tile_x != This->cached_tile_x || tile_y != This->cached_tile_y)
1049             {
1050                 hr = TiffFrameDecode_ReadTile(This, tile_x, tile_y);
1051             }
1052
1053             if (SUCCEEDED(hr))
1054             {
1055                 if (prc->X < tile_x * This->decode_info.tile_width)
1056                     rc.X = 0;
1057                 else
1058                     rc.X = prc->X - tile_x * This->decode_info.tile_width;
1059
1060                 if (prc->Y < tile_y * This->decode_info.tile_height)
1061                     rc.Y = 0;
1062                 else
1063                     rc.Y = prc->Y - tile_y * This->decode_info.tile_height;
1064
1065                 if (prc->X+prc->Width > (tile_x+1) * This->decode_info.tile_width)
1066                     rc.Width = This->decode_info.tile_width - rc.X;
1067                 else if (prc->X < tile_x * This->decode_info.tile_width)
1068                     rc.Width = prc->Width + prc->X - tile_x * This->decode_info.tile_width;
1069                 else
1070                     rc.Width = prc->Width;
1071
1072                 if (prc->Y+prc->Height > (tile_y+1) * This->decode_info.tile_height)
1073                     rc.Height = This->decode_info.tile_height - rc.Y;
1074                 else if (prc->Y < tile_y * This->decode_info.tile_height)
1075                     rc.Height = prc->Height + prc->Y - tile_y * This->decode_info.tile_height;
1076                 else
1077                     rc.Height = prc->Height;
1078
1079                 dst_tilepos = pbBuffer + (cbStride * ((rc.Y + tile_y * This->decode_info.tile_height) - prc->Y)) +
1080                     ((This->decode_info.bpp * ((rc.X + tile_x * This->decode_info.tile_width) - prc->X) + 7) / 8);
1081
1082                 hr = copy_pixels(This->decode_info.bpp, This->cached_tile,
1083                     This->decode_info.tile_width, This->decode_info.tile_height, This->decode_info.tile_stride,
1084                     &rc, cbStride, cbBufferSize, dst_tilepos);
1085             }
1086
1087             if (FAILED(hr))
1088             {
1089                 LeaveCriticalSection(&This->parent->lock);
1090                 TRACE("<-- 0x%x\n", hr);
1091                 return hr;
1092             }
1093         }
1094     }
1095
1096     LeaveCriticalSection(&This->parent->lock);
1097
1098     return S_OK;
1099 }
1100
1101 static HRESULT WINAPI TiffFrameDecode_GetMetadataQueryReader(IWICBitmapFrameDecode *iface,
1102     IWICMetadataQueryReader **ppIMetadataQueryReader)
1103 {
1104     FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryReader);
1105     return E_NOTIMPL;
1106 }
1107
1108 static HRESULT WINAPI TiffFrameDecode_GetColorContexts(IWICBitmapFrameDecode *iface,
1109     UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
1110 {
1111     TiffFrameDecode *This = impl_from_IWICBitmapFrameDecode(iface);
1112     const BYTE *profile;
1113     UINT len;
1114     HRESULT hr;
1115
1116     TRACE("(%p,%u,%p,%p)\n", iface, cCount, ppIColorContexts, pcActualCount);
1117
1118     EnterCriticalSection(&This->parent->lock);
1119
1120     if (pTIFFGetField(This->parent->tiff, TIFFTAG_ICCPROFILE, &len, &profile))
1121     {
1122         if (cCount && ppIColorContexts)
1123         {
1124             hr = IWICColorContext_InitializeFromMemory(*ppIColorContexts, profile, len);
1125             if (FAILED(hr))
1126             {
1127                 LeaveCriticalSection(&This->parent->lock);
1128                 return hr;
1129             }
1130         }
1131         *pcActualCount = 1;
1132     }
1133     else
1134         *pcActualCount = 0;
1135
1136     LeaveCriticalSection(&This->parent->lock);
1137
1138     return S_OK;
1139 }
1140
1141 static HRESULT WINAPI TiffFrameDecode_GetThumbnail(IWICBitmapFrameDecode *iface,
1142     IWICBitmapSource **ppIThumbnail)
1143 {
1144     TRACE("(%p,%p)\n", iface, ppIThumbnail);
1145
1146     if (!ppIThumbnail) return E_INVALIDARG;
1147
1148     *ppIThumbnail = NULL;
1149     return WINCODEC_ERR_CODECNOTHUMBNAIL;
1150 }
1151
1152 static const IWICBitmapFrameDecodeVtbl TiffFrameDecode_Vtbl = {
1153     TiffFrameDecode_QueryInterface,
1154     TiffFrameDecode_AddRef,
1155     TiffFrameDecode_Release,
1156     TiffFrameDecode_GetSize,
1157     TiffFrameDecode_GetPixelFormat,
1158     TiffFrameDecode_GetResolution,
1159     TiffFrameDecode_CopyPalette,
1160     TiffFrameDecode_CopyPixels,
1161     TiffFrameDecode_GetMetadataQueryReader,
1162     TiffFrameDecode_GetColorContexts,
1163     TiffFrameDecode_GetThumbnail
1164 };
1165
1166 static HRESULT WINAPI TiffFrameDecode_Block_QueryInterface(IWICMetadataBlockReader *iface,
1167     REFIID iid, void **ppv)
1168 {
1169     TiffFrameDecode *This = impl_from_IWICMetadataBlockReader(iface);
1170     return IWICBitmapFrameDecode_QueryInterface(&This->IWICBitmapFrameDecode_iface, iid, ppv);
1171 }
1172
1173 static ULONG WINAPI TiffFrameDecode_Block_AddRef(IWICMetadataBlockReader *iface)
1174 {
1175     TiffFrameDecode *This = impl_from_IWICMetadataBlockReader(iface);
1176     return IWICBitmapFrameDecode_AddRef(&This->IWICBitmapFrameDecode_iface);
1177 }
1178
1179 static ULONG WINAPI TiffFrameDecode_Block_Release(IWICMetadataBlockReader *iface)
1180 {
1181     TiffFrameDecode *This = impl_from_IWICMetadataBlockReader(iface);
1182     return IWICBitmapFrameDecode_Release(&This->IWICBitmapFrameDecode_iface);
1183 }
1184
1185 static HRESULT WINAPI TiffFrameDecode_Block_GetContainerFormat(IWICMetadataBlockReader *iface,
1186     GUID *guid)
1187 {
1188     TRACE("(%p,%p)\n", iface, guid);
1189
1190     if (!guid) return E_INVALIDARG;
1191
1192     *guid = GUID_ContainerFormatTiff;
1193     return S_OK;
1194 }
1195
1196 static HRESULT WINAPI TiffFrameDecode_Block_GetCount(IWICMetadataBlockReader *iface,
1197     UINT *count)
1198 {
1199     TRACE("%p,%p\n", iface, count);
1200
1201     if (!count) return E_INVALIDARG;
1202
1203     *count = 1;
1204     return S_OK;
1205 }
1206
1207 static HRESULT create_metadata_reader(TiffFrameDecode *This, IWICMetadataReader **reader)
1208 {
1209     HRESULT hr;
1210     LARGE_INTEGER dir_offset;
1211     IWICMetadataReader *metadata_reader;
1212     IWICPersistStream *persist;
1213
1214     /* FIXME: Use IWICComponentFactory_CreateMetadataReader once it's implemented */
1215
1216     hr = CoCreateInstance(&CLSID_WICIfdMetadataReader, NULL, CLSCTX_INPROC_SERVER,
1217                           &IID_IWICMetadataReader, (void **)&metadata_reader);
1218     if (FAILED(hr)) return hr;
1219
1220     hr = IWICMetadataReader_QueryInterface(metadata_reader, &IID_IWICPersistStream, (void **)&persist);
1221     if (FAILED(hr))
1222     {
1223         IWICMetadataReader_Release(metadata_reader);
1224         return hr;
1225     }
1226
1227     EnterCriticalSection(&This->parent->lock);
1228
1229     dir_offset.QuadPart = pTIFFCurrentDirOffset(This->parent->tiff);
1230     hr = IStream_Seek(This->parent->stream, dir_offset, STREAM_SEEK_SET, NULL);
1231     if (SUCCEEDED(hr))
1232     {
1233         BOOL byte_swapped = pTIFFIsByteSwapped(This->parent->tiff);
1234 #ifdef WORDS_BIGENDIAN
1235         DWORD persist_options = byte_swapped ? WICPersistOptionsLittleEndian : WICPersistOptionsBigEndian;
1236 #else
1237         DWORD persist_options = byte_swapped ? WICPersistOptionsBigEndian : WICPersistOptionsLittleEndian;
1238 #endif
1239         persist_options |= WICPersistOptionsNoCacheStream;
1240         hr = IWICPersistStream_LoadEx(persist, This->parent->stream, NULL, persist_options);
1241         if (FAILED(hr))
1242             ERR("IWICPersistStream_LoadEx error %#x\n", hr);
1243     }
1244
1245     LeaveCriticalSection(&This->parent->lock);
1246
1247     IWICPersistStream_Release(persist);
1248
1249     if (FAILED(hr))
1250     {
1251         IWICMetadataReader_Release(metadata_reader);
1252         return hr;
1253     }
1254
1255     *reader = metadata_reader;
1256     return S_OK;
1257 }
1258
1259 static HRESULT WINAPI TiffFrameDecode_Block_GetReaderByIndex(IWICMetadataBlockReader *iface,
1260     UINT index, IWICMetadataReader **reader)
1261 {
1262     TiffFrameDecode *This = impl_from_IWICMetadataBlockReader(iface);
1263
1264     TRACE("(%p,%u,%p)\n", iface, index, reader);
1265
1266     if (!reader || index != 0) return E_INVALIDARG;
1267
1268     return create_metadata_reader(This, reader);
1269 }
1270
1271 static HRESULT WINAPI TiffFrameDecode_Block_GetEnumerator(IWICMetadataBlockReader *iface,
1272     IEnumUnknown **enum_metadata)
1273 {
1274     FIXME("(%p,%p): stub\n", iface, enum_metadata);
1275     return E_NOTIMPL;
1276 }
1277
1278 static const IWICMetadataBlockReaderVtbl TiffFrameDecode_BlockVtbl =
1279 {
1280     TiffFrameDecode_Block_QueryInterface,
1281     TiffFrameDecode_Block_AddRef,
1282     TiffFrameDecode_Block_Release,
1283     TiffFrameDecode_Block_GetContainerFormat,
1284     TiffFrameDecode_Block_GetCount,
1285     TiffFrameDecode_Block_GetReaderByIndex,
1286     TiffFrameDecode_Block_GetEnumerator
1287 };
1288
1289 HRESULT TiffDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
1290 {
1291     HRESULT ret;
1292     TiffDecoder *This;
1293
1294     TRACE("(%p,%s,%p)\n", pUnkOuter, debugstr_guid(iid), ppv);
1295
1296     *ppv = NULL;
1297
1298     if (pUnkOuter) return CLASS_E_NOAGGREGATION;
1299
1300     if (!load_libtiff())
1301     {
1302         ERR("Failed reading TIFF because unable to load %s\n",SONAME_LIBTIFF);
1303         return E_FAIL;
1304     }
1305
1306     This = HeapAlloc(GetProcessHeap(), 0, sizeof(TiffDecoder));
1307     if (!This) return E_OUTOFMEMORY;
1308
1309     This->IWICBitmapDecoder_iface.lpVtbl = &TiffDecoder_Vtbl;
1310     This->ref = 1;
1311     This->stream = NULL;
1312     InitializeCriticalSection(&This->lock);
1313     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": TiffDecoder.lock");
1314     This->tiff = NULL;
1315     This->initialized = FALSE;
1316
1317     ret = IWICBitmapDecoder_QueryInterface(&This->IWICBitmapDecoder_iface, iid, ppv);
1318     IWICBitmapDecoder_Release(&This->IWICBitmapDecoder_iface);
1319
1320     return ret;
1321 }
1322
1323 struct tiff_encode_format {
1324     const WICPixelFormatGUID *guid;
1325     int photometric;
1326     int bps;
1327     int samples;
1328     int bpp;
1329     int extra_sample;
1330     int extra_sample_type;
1331     int reverse_bgr;
1332 };
1333
1334 static const struct tiff_encode_format formats[] = {
1335     {&GUID_WICPixelFormat24bppBGR, 2, 8, 3, 24, 0, 0, 1},
1336     {&GUID_WICPixelFormat24bppRGB, 2, 8, 3, 24, 0, 0, 0},
1337     {&GUID_WICPixelFormatBlackWhite, 1, 1, 1, 1, 0, 0, 0},
1338     {&GUID_WICPixelFormat4bppGray, 1, 4, 1, 4, 0, 0, 0},
1339     {&GUID_WICPixelFormat8bppGray, 1, 8, 1, 8, 0, 0, 0},
1340     {&GUID_WICPixelFormat32bppBGRA, 2, 8, 4, 32, 1, 2, 1},
1341     {&GUID_WICPixelFormat32bppPBGRA, 2, 8, 4, 32, 1, 1, 1},
1342     {&GUID_WICPixelFormat48bppRGB, 2, 16, 3, 48, 0, 0, 0},
1343     {&GUID_WICPixelFormat64bppRGBA, 2, 16, 4, 64, 1, 2, 0},
1344     {&GUID_WICPixelFormat64bppPRGBA, 2, 16, 4, 64, 1, 1, 0},
1345     {0}
1346 };
1347
1348 typedef struct TiffEncoder {
1349     IWICBitmapEncoder IWICBitmapEncoder_iface;
1350     LONG ref;
1351     IStream *stream;
1352     CRITICAL_SECTION lock; /* Must be held when tiff is used or fields below are set */
1353     TIFF *tiff;
1354     BOOL initialized;
1355     BOOL committed;
1356     ULONG num_frames;
1357     ULONG num_frames_committed;
1358 } TiffEncoder;
1359
1360 static inline TiffEncoder *impl_from_IWICBitmapEncoder(IWICBitmapEncoder *iface)
1361 {
1362     return CONTAINING_RECORD(iface, TiffEncoder, IWICBitmapEncoder_iface);
1363 }
1364
1365 typedef struct TiffFrameEncode {
1366     IWICBitmapFrameEncode IWICBitmapFrameEncode_iface;
1367     LONG ref;
1368     TiffEncoder *parent;
1369     /* fields below are protected by parent->lock */
1370     BOOL initialized;
1371     BOOL info_written;
1372     BOOL committed;
1373     const struct tiff_encode_format *format;
1374     UINT width, height;
1375     double xres, yres;
1376     UINT lines_written;
1377 } TiffFrameEncode;
1378
1379 static inline TiffFrameEncode *impl_from_IWICBitmapFrameEncode(IWICBitmapFrameEncode *iface)
1380 {
1381     return CONTAINING_RECORD(iface, TiffFrameEncode, IWICBitmapFrameEncode_iface);
1382 }
1383
1384 static HRESULT WINAPI TiffFrameEncode_QueryInterface(IWICBitmapFrameEncode *iface, REFIID iid,
1385     void **ppv)
1386 {
1387     TiffFrameEncode *This = impl_from_IWICBitmapFrameEncode(iface);
1388     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
1389
1390     if (!ppv) return E_INVALIDARG;
1391
1392     if (IsEqualIID(&IID_IUnknown, iid) ||
1393         IsEqualIID(&IID_IWICBitmapFrameEncode, iid))
1394     {
1395         *ppv = &This->IWICBitmapFrameEncode_iface;
1396     }
1397     else
1398     {
1399         *ppv = NULL;
1400         return E_NOINTERFACE;
1401     }
1402
1403     IUnknown_AddRef((IUnknown*)*ppv);
1404     return S_OK;
1405 }
1406
1407 static ULONG WINAPI TiffFrameEncode_AddRef(IWICBitmapFrameEncode *iface)
1408 {
1409     TiffFrameEncode *This = impl_from_IWICBitmapFrameEncode(iface);
1410     ULONG ref = InterlockedIncrement(&This->ref);
1411
1412     TRACE("(%p) refcount=%u\n", iface, ref);
1413
1414     return ref;
1415 }
1416
1417 static ULONG WINAPI TiffFrameEncode_Release(IWICBitmapFrameEncode *iface)
1418 {
1419     TiffFrameEncode *This = impl_from_IWICBitmapFrameEncode(iface);
1420     ULONG ref = InterlockedDecrement(&This->ref);
1421
1422     TRACE("(%p) refcount=%u\n", iface, ref);
1423
1424     if (ref == 0)
1425     {
1426         IWICBitmapEncoder_Release(&This->parent->IWICBitmapEncoder_iface);
1427         HeapFree(GetProcessHeap(), 0, This);
1428     }
1429
1430     return ref;
1431 }
1432
1433 static HRESULT WINAPI TiffFrameEncode_Initialize(IWICBitmapFrameEncode *iface,
1434     IPropertyBag2 *pIEncoderOptions)
1435 {
1436     TiffFrameEncode *This = impl_from_IWICBitmapFrameEncode(iface);
1437     TRACE("(%p,%p)\n", iface, pIEncoderOptions);
1438
1439     EnterCriticalSection(&This->parent->lock);
1440
1441     if (This->initialized)
1442     {
1443         LeaveCriticalSection(&This->parent->lock);
1444         return WINCODEC_ERR_WRONGSTATE;
1445     }
1446
1447     This->initialized = TRUE;
1448
1449     LeaveCriticalSection(&This->parent->lock);
1450
1451     return S_OK;
1452 }
1453
1454 static HRESULT WINAPI TiffFrameEncode_SetSize(IWICBitmapFrameEncode *iface,
1455     UINT uiWidth, UINT uiHeight)
1456 {
1457     TiffFrameEncode *This = impl_from_IWICBitmapFrameEncode(iface);
1458     TRACE("(%p,%u,%u)\n", iface, uiWidth, uiHeight);
1459
1460     EnterCriticalSection(&This->parent->lock);
1461
1462     if (!This->initialized || This->info_written)
1463     {
1464         LeaveCriticalSection(&This->parent->lock);
1465         return WINCODEC_ERR_WRONGSTATE;
1466     }
1467
1468     This->width = uiWidth;
1469     This->height = uiHeight;
1470
1471     LeaveCriticalSection(&This->parent->lock);
1472
1473     return S_OK;
1474 }
1475
1476 static HRESULT WINAPI TiffFrameEncode_SetResolution(IWICBitmapFrameEncode *iface,
1477     double dpiX, double dpiY)
1478 {
1479     TiffFrameEncode *This = impl_from_IWICBitmapFrameEncode(iface);
1480     TRACE("(%p,%0.2f,%0.2f)\n", iface, dpiX, dpiY);
1481
1482     EnterCriticalSection(&This->parent->lock);
1483
1484     if (!This->initialized || This->info_written)
1485     {
1486         LeaveCriticalSection(&This->parent->lock);
1487         return WINCODEC_ERR_WRONGSTATE;
1488     }
1489
1490     This->xres = dpiX;
1491     This->yres = dpiY;
1492
1493     LeaveCriticalSection(&This->parent->lock);
1494
1495     return S_OK;
1496 }
1497
1498 static HRESULT WINAPI TiffFrameEncode_SetPixelFormat(IWICBitmapFrameEncode *iface,
1499     WICPixelFormatGUID *pPixelFormat)
1500 {
1501     TiffFrameEncode *This = impl_from_IWICBitmapFrameEncode(iface);
1502     int i;
1503
1504     TRACE("(%p,%s)\n", iface, debugstr_guid(pPixelFormat));
1505
1506     EnterCriticalSection(&This->parent->lock);
1507
1508     if (!This->initialized || This->info_written)
1509     {
1510         LeaveCriticalSection(&This->parent->lock);
1511         return WINCODEC_ERR_WRONGSTATE;
1512     }
1513
1514     for (i=0; formats[i].guid; i++)
1515     {
1516         if (memcmp(formats[i].guid, pPixelFormat, sizeof(GUID)) == 0)
1517             break;
1518     }
1519
1520     if (!formats[i].guid) i = 0;
1521
1522     This->format = &formats[i];
1523     memcpy(pPixelFormat, This->format->guid, sizeof(GUID));
1524
1525     LeaveCriticalSection(&This->parent->lock);
1526
1527     return S_OK;
1528 }
1529
1530 static HRESULT WINAPI TiffFrameEncode_SetColorContexts(IWICBitmapFrameEncode *iface,
1531     UINT cCount, IWICColorContext **ppIColorContext)
1532 {
1533     FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
1534     return E_NOTIMPL;
1535 }
1536
1537 static HRESULT WINAPI TiffFrameEncode_SetPalette(IWICBitmapFrameEncode *iface,
1538     IWICPalette *pIPalette)
1539 {
1540     FIXME("(%p,%p): stub\n", iface, pIPalette);
1541     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1542 }
1543
1544 static HRESULT WINAPI TiffFrameEncode_SetThumbnail(IWICBitmapFrameEncode *iface,
1545     IWICBitmapSource *pIThumbnail)
1546 {
1547     FIXME("(%p,%p): stub\n", iface, pIThumbnail);
1548     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1549 }
1550
1551 static HRESULT WINAPI TiffFrameEncode_WritePixels(IWICBitmapFrameEncode *iface,
1552     UINT lineCount, UINT cbStride, UINT cbBufferSize, BYTE *pbPixels)
1553 {
1554     TiffFrameEncode *This = impl_from_IWICBitmapFrameEncode(iface);
1555     BYTE *row_data, *swapped_data = NULL;
1556     UINT i, j, line_size;
1557
1558     TRACE("(%p,%u,%u,%u,%p)\n", iface, lineCount, cbStride, cbBufferSize, pbPixels);
1559
1560     EnterCriticalSection(&This->parent->lock);
1561
1562     if (!This->initialized || !This->width || !This->height || !This->format)
1563     {
1564         LeaveCriticalSection(&This->parent->lock);
1565         return WINCODEC_ERR_WRONGSTATE;
1566     }
1567
1568     if (lineCount == 0 || lineCount + This->lines_written > This->height)
1569     {
1570         LeaveCriticalSection(&This->parent->lock);
1571         return E_INVALIDARG;
1572     }
1573
1574     line_size = ((This->width * This->format->bpp)+7)/8;
1575
1576     if (This->format->reverse_bgr)
1577     {
1578         swapped_data = HeapAlloc(GetProcessHeap(), 0, line_size);
1579         if (!swapped_data)
1580         {
1581             LeaveCriticalSection(&This->parent->lock);
1582             return E_OUTOFMEMORY;
1583         }
1584     }
1585
1586     if (!This->info_written)
1587     {
1588         pTIFFSetField(This->parent->tiff, TIFFTAG_PHOTOMETRIC, (uint16)This->format->photometric);
1589         pTIFFSetField(This->parent->tiff, TIFFTAG_PLANARCONFIG, (uint16)1);
1590         pTIFFSetField(This->parent->tiff, TIFFTAG_BITSPERSAMPLE, (uint16)This->format->bps);
1591         pTIFFSetField(This->parent->tiff, TIFFTAG_SAMPLESPERPIXEL, (uint16)This->format->samples);
1592
1593         if (This->format->extra_sample)
1594         {
1595             uint16 extra_samples;
1596             extra_samples = This->format->extra_sample_type;
1597
1598             pTIFFSetField(This->parent->tiff, TIFFTAG_EXTRASAMPLES, (uint16)1, &extra_samples);
1599         }
1600
1601         pTIFFSetField(This->parent->tiff, TIFFTAG_IMAGEWIDTH, (uint32)This->width);
1602         pTIFFSetField(This->parent->tiff, TIFFTAG_IMAGELENGTH, (uint32)This->height);
1603
1604         if (This->xres != 0.0 && This->yres != 0.0)
1605         {
1606             pTIFFSetField(This->parent->tiff, TIFFTAG_RESOLUTIONUNIT, (uint16)2); /* Inch */
1607             pTIFFSetField(This->parent->tiff, TIFFTAG_XRESOLUTION, (float)This->xres);
1608             pTIFFSetField(This->parent->tiff, TIFFTAG_YRESOLUTION, (float)This->yres);
1609         }
1610
1611         This->info_written = TRUE;
1612     }
1613
1614     for (i=0; i<lineCount; i++)
1615     {
1616         row_data = pbPixels + i * cbStride;
1617
1618         if (This->format->reverse_bgr && This->format->bps == 8)
1619         {
1620             memcpy(swapped_data, row_data, line_size);
1621             for (j=0; j<line_size; j += This->format->samples)
1622             {
1623                 BYTE temp;
1624                 temp = swapped_data[j];
1625                 swapped_data[j] = swapped_data[j+2];
1626                 swapped_data[j+2] = temp;
1627             }
1628             row_data = swapped_data;
1629         }
1630
1631         pTIFFWriteScanline(This->parent->tiff, (tdata_t)row_data, i+This->lines_written, 0);
1632     }
1633
1634     This->lines_written += lineCount;
1635
1636     LeaveCriticalSection(&This->parent->lock);
1637
1638     HeapFree(GetProcessHeap(), 0, swapped_data);
1639
1640     return S_OK;
1641 }
1642
1643 static HRESULT WINAPI TiffFrameEncode_WriteSource(IWICBitmapFrameEncode *iface,
1644     IWICBitmapSource *pIBitmapSource, WICRect *prc)
1645 {
1646     TiffFrameEncode *This = impl_from_IWICBitmapFrameEncode(iface);
1647     HRESULT hr;
1648     WICRect rc;
1649     WICPixelFormatGUID guid;
1650     UINT stride;
1651     BYTE *pixeldata;
1652
1653     TRACE("(%p,%p,%p)\n", iface, pIBitmapSource, prc);
1654
1655     if (!This->initialized || !This->width || !This->height)
1656         return WINCODEC_ERR_WRONGSTATE;
1657
1658     if (!This->format)
1659     {
1660         hr = IWICBitmapSource_GetPixelFormat(pIBitmapSource, &guid);
1661         if (FAILED(hr)) return hr;
1662         hr = IWICBitmapFrameEncode_SetPixelFormat(iface, &guid);
1663         if (FAILED(hr)) return hr;
1664     }
1665
1666     hr = IWICBitmapSource_GetPixelFormat(pIBitmapSource, &guid);
1667     if (FAILED(hr)) return hr;
1668     if (memcmp(&guid, This->format->guid, sizeof(GUID)) != 0)
1669     {
1670         /* FIXME: should use WICConvertBitmapSource to convert */
1671         ERR("format %s unsupported\n", debugstr_guid(&guid));
1672         return E_FAIL;
1673     }
1674
1675     if (This->xres == 0.0 || This->yres == 0.0)
1676     {
1677         double xres, yres;
1678         hr = IWICBitmapSource_GetResolution(pIBitmapSource, &xres, &yres);
1679         if (FAILED(hr)) return hr;
1680         hr = IWICBitmapFrameEncode_SetResolution(iface, xres, yres);
1681         if (FAILED(hr)) return hr;
1682     }
1683
1684     if (!prc)
1685     {
1686         UINT width, height;
1687         hr = IWICBitmapSource_GetSize(pIBitmapSource, &width, &height);
1688         if (FAILED(hr)) return hr;
1689         rc.X = 0;
1690         rc.Y = 0;
1691         rc.Width = width;
1692         rc.Height = height;
1693         prc = &rc;
1694     }
1695
1696     if (prc->Width != This->width) return E_INVALIDARG;
1697
1698     stride = (This->format->bpp * This->width + 7)/8;
1699
1700     pixeldata = HeapAlloc(GetProcessHeap(), 0, stride * prc->Height);
1701     if (!pixeldata) return E_OUTOFMEMORY;
1702
1703     hr = IWICBitmapSource_CopyPixels(pIBitmapSource, prc, stride,
1704         stride*prc->Height, pixeldata);
1705
1706     if (SUCCEEDED(hr))
1707     {
1708         hr = IWICBitmapFrameEncode_WritePixels(iface, prc->Height, stride,
1709             stride*prc->Height, pixeldata);
1710     }
1711
1712     HeapFree(GetProcessHeap(), 0, pixeldata);
1713
1714     return S_OK;
1715 }
1716
1717 static HRESULT WINAPI TiffFrameEncode_Commit(IWICBitmapFrameEncode *iface)
1718 {
1719     TiffFrameEncode *This = impl_from_IWICBitmapFrameEncode(iface);
1720
1721     TRACE("(%p)\n", iface);
1722
1723     EnterCriticalSection(&This->parent->lock);
1724
1725     if (!This->info_written || This->lines_written != This->height || This->committed)
1726     {
1727         LeaveCriticalSection(&This->parent->lock);
1728         return WINCODEC_ERR_WRONGSTATE;
1729     }
1730
1731     /* libtiff will commit the data when creating a new frame or closing the file */
1732
1733     This->committed = TRUE;
1734     This->parent->num_frames_committed++;
1735
1736     LeaveCriticalSection(&This->parent->lock);
1737
1738     return S_OK;
1739 }
1740
1741 static HRESULT WINAPI TiffFrameEncode_GetMetadataQueryWriter(IWICBitmapFrameEncode *iface,
1742     IWICMetadataQueryWriter **ppIMetadataQueryWriter)
1743 {
1744     FIXME("(%p, %p): stub\n", iface, ppIMetadataQueryWriter);
1745     return E_NOTIMPL;
1746 }
1747
1748 static const IWICBitmapFrameEncodeVtbl TiffFrameEncode_Vtbl = {
1749     TiffFrameEncode_QueryInterface,
1750     TiffFrameEncode_AddRef,
1751     TiffFrameEncode_Release,
1752     TiffFrameEncode_Initialize,
1753     TiffFrameEncode_SetSize,
1754     TiffFrameEncode_SetResolution,
1755     TiffFrameEncode_SetPixelFormat,
1756     TiffFrameEncode_SetColorContexts,
1757     TiffFrameEncode_SetPalette,
1758     TiffFrameEncode_SetThumbnail,
1759     TiffFrameEncode_WritePixels,
1760     TiffFrameEncode_WriteSource,
1761     TiffFrameEncode_Commit,
1762     TiffFrameEncode_GetMetadataQueryWriter
1763 };
1764
1765 static HRESULT WINAPI TiffEncoder_QueryInterface(IWICBitmapEncoder *iface, REFIID iid,
1766     void **ppv)
1767 {
1768     TiffEncoder *This = impl_from_IWICBitmapEncoder(iface);
1769     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
1770
1771     if (!ppv) return E_INVALIDARG;
1772
1773     if (IsEqualIID(&IID_IUnknown, iid) ||
1774         IsEqualIID(&IID_IWICBitmapEncoder, iid))
1775     {
1776         *ppv = &This->IWICBitmapEncoder_iface;
1777     }
1778     else
1779     {
1780         *ppv = NULL;
1781         return E_NOINTERFACE;
1782     }
1783
1784     IUnknown_AddRef((IUnknown*)*ppv);
1785     return S_OK;
1786 }
1787
1788 static ULONG WINAPI TiffEncoder_AddRef(IWICBitmapEncoder *iface)
1789 {
1790     TiffEncoder *This = impl_from_IWICBitmapEncoder(iface);
1791     ULONG ref = InterlockedIncrement(&This->ref);
1792
1793     TRACE("(%p) refcount=%u\n", iface, ref);
1794
1795     return ref;
1796 }
1797
1798 static ULONG WINAPI TiffEncoder_Release(IWICBitmapEncoder *iface)
1799 {
1800     TiffEncoder *This = impl_from_IWICBitmapEncoder(iface);
1801     ULONG ref = InterlockedDecrement(&This->ref);
1802
1803     TRACE("(%p) refcount=%u\n", iface, ref);
1804
1805     if (ref == 0)
1806     {
1807         if (This->tiff) pTIFFClose(This->tiff);
1808         if (This->stream) IStream_Release(This->stream);
1809         This->lock.DebugInfo->Spare[0] = 0;
1810         DeleteCriticalSection(&This->lock);
1811         HeapFree(GetProcessHeap(), 0, This);
1812     }
1813
1814     return ref;
1815 }
1816
1817 static HRESULT WINAPI TiffEncoder_Initialize(IWICBitmapEncoder *iface,
1818     IStream *pIStream, WICBitmapEncoderCacheOption cacheOption)
1819 {
1820     TiffEncoder *This = impl_from_IWICBitmapEncoder(iface);
1821     TIFF *tiff;
1822     HRESULT hr=S_OK;
1823
1824     TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOption);
1825
1826     EnterCriticalSection(&This->lock);
1827
1828     if (This->initialized || This->committed)
1829     {
1830         hr = WINCODEC_ERR_WRONGSTATE;
1831         goto exit;
1832     }
1833
1834     tiff = tiff_open_stream(pIStream, "w");
1835
1836     if (!tiff)
1837     {
1838         hr = E_FAIL;
1839         goto exit;
1840     }
1841
1842     This->tiff = tiff;
1843     This->stream = pIStream;
1844     IStream_AddRef(pIStream);
1845     This->initialized = TRUE;
1846
1847 exit:
1848     LeaveCriticalSection(&This->lock);
1849     return hr;
1850 }
1851
1852 static HRESULT WINAPI TiffEncoder_GetContainerFormat(IWICBitmapEncoder *iface,
1853     GUID *pguidContainerFormat)
1854 {
1855     memcpy(pguidContainerFormat, &GUID_ContainerFormatTiff, sizeof(GUID));
1856     return S_OK;
1857 }
1858
1859 static HRESULT WINAPI TiffEncoder_GetEncoderInfo(IWICBitmapEncoder *iface,
1860     IWICBitmapEncoderInfo **ppIEncoderInfo)
1861 {
1862     FIXME("(%p,%p): stub\n", iface, ppIEncoderInfo);
1863     return E_NOTIMPL;
1864 }
1865
1866 static HRESULT WINAPI TiffEncoder_SetColorContexts(IWICBitmapEncoder *iface,
1867     UINT cCount, IWICColorContext **ppIColorContext)
1868 {
1869     FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
1870     return E_NOTIMPL;
1871 }
1872
1873 static HRESULT WINAPI TiffEncoder_SetPalette(IWICBitmapEncoder *iface, IWICPalette *pIPalette)
1874 {
1875     TRACE("(%p,%p)\n", iface, pIPalette);
1876     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1877 }
1878
1879 static HRESULT WINAPI TiffEncoder_SetThumbnail(IWICBitmapEncoder *iface, IWICBitmapSource *pIThumbnail)
1880 {
1881     TRACE("(%p,%p)\n", iface, pIThumbnail);
1882     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1883 }
1884
1885 static HRESULT WINAPI TiffEncoder_SetPreview(IWICBitmapEncoder *iface, IWICBitmapSource *pIPreview)
1886 {
1887     TRACE("(%p,%p)\n", iface, pIPreview);
1888     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1889 }
1890
1891 static HRESULT WINAPI TiffEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
1892     IWICBitmapFrameEncode **ppIFrameEncode, IPropertyBag2 **ppIEncoderOptions)
1893 {
1894     TiffEncoder *This = impl_from_IWICBitmapEncoder(iface);
1895     TiffFrameEncode *result;
1896
1897     HRESULT hr=S_OK;
1898
1899     TRACE("(%p,%p,%p)\n", iface, ppIFrameEncode, ppIEncoderOptions);
1900
1901     EnterCriticalSection(&This->lock);
1902
1903     if (!This->initialized || This->committed)
1904     {
1905         hr = WINCODEC_ERR_WRONGSTATE;
1906     }
1907     else if (This->num_frames != This->num_frames_committed)
1908     {
1909         FIXME("New frame created before previous frame was committed\n");
1910         hr = E_FAIL;
1911     }
1912
1913     if (SUCCEEDED(hr))
1914     {
1915         PROPBAG2 opts[2]= {{0}};
1916         opts[0].pstrName = (LPOLESTR)wszTiffCompressionMethod;
1917         opts[0].vt = VT_UI1;
1918         opts[0].dwType = PROPBAG2_TYPE_DATA;
1919
1920         opts[1].pstrName = (LPOLESTR)wszCompressionQuality;
1921         opts[1].vt = VT_R4;
1922         opts[1].dwType = PROPBAG2_TYPE_DATA;
1923
1924         hr = CreatePropertyBag2(opts, 2, ppIEncoderOptions);
1925
1926         if (SUCCEEDED(hr))
1927         {
1928             VARIANT v;
1929             VariantInit(&v);
1930             V_VT(&v) = VT_UI1;
1931             V_UNION(&v, bVal) = WICTiffCompressionDontCare;
1932             hr = IPropertyBag2_Write(*ppIEncoderOptions, 1, opts, &v);
1933             VariantClear(&v);
1934             if (FAILED(hr))
1935             {
1936                 IPropertyBag2_Release(*ppIEncoderOptions);
1937                 *ppIEncoderOptions = NULL;
1938             }
1939         }
1940     }
1941
1942     if (SUCCEEDED(hr))
1943     {
1944         result = HeapAlloc(GetProcessHeap(), 0, sizeof(*result));
1945
1946         if (result)
1947         {
1948             result->IWICBitmapFrameEncode_iface.lpVtbl = &TiffFrameEncode_Vtbl;
1949             result->ref = 1;
1950             result->parent = This;
1951             result->initialized = FALSE;
1952             result->info_written = FALSE;
1953             result->committed = FALSE;
1954             result->format = NULL;
1955             result->width = 0;
1956             result->height = 0;
1957             result->xres = 0.0;
1958             result->yres = 0.0;
1959             result->lines_written = 0;
1960
1961             IWICBitmapEncoder_AddRef(iface);
1962             *ppIFrameEncode = &result->IWICBitmapFrameEncode_iface;
1963
1964             if (This->num_frames != 0)
1965                 pTIFFWriteDirectory(This->tiff);
1966
1967             This->num_frames++;
1968         }
1969         else
1970             hr = E_OUTOFMEMORY;
1971
1972         if (FAILED(hr))
1973         {
1974             IPropertyBag2_Release(*ppIEncoderOptions);
1975             *ppIEncoderOptions = NULL;
1976         }
1977     }
1978
1979     LeaveCriticalSection(&This->lock);
1980
1981     return hr;
1982 }
1983
1984 static HRESULT WINAPI TiffEncoder_Commit(IWICBitmapEncoder *iface)
1985 {
1986     TiffEncoder *This = impl_from_IWICBitmapEncoder(iface);
1987
1988     TRACE("(%p)\n", iface);
1989
1990     EnterCriticalSection(&This->lock);
1991
1992     if (!This->initialized || This->committed)
1993     {
1994         LeaveCriticalSection(&This->lock);
1995         return WINCODEC_ERR_WRONGSTATE;
1996     }
1997
1998     pTIFFClose(This->tiff);
1999     IStream_Release(This->stream);
2000     This->stream = NULL;
2001     This->tiff = NULL;
2002
2003     This->committed = TRUE;
2004
2005     LeaveCriticalSection(&This->lock);
2006
2007     return S_OK;
2008 }
2009
2010 static HRESULT WINAPI TiffEncoder_GetMetadataQueryWriter(IWICBitmapEncoder *iface,
2011     IWICMetadataQueryWriter **ppIMetadataQueryWriter)
2012 {
2013     FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryWriter);
2014     return E_NOTIMPL;
2015 }
2016
2017 static const IWICBitmapEncoderVtbl TiffEncoder_Vtbl = {
2018     TiffEncoder_QueryInterface,
2019     TiffEncoder_AddRef,
2020     TiffEncoder_Release,
2021     TiffEncoder_Initialize,
2022     TiffEncoder_GetContainerFormat,
2023     TiffEncoder_GetEncoderInfo,
2024     TiffEncoder_SetColorContexts,
2025     TiffEncoder_SetPalette,
2026     TiffEncoder_SetThumbnail,
2027     TiffEncoder_SetPreview,
2028     TiffEncoder_CreateNewFrame,
2029     TiffEncoder_Commit,
2030     TiffEncoder_GetMetadataQueryWriter
2031 };
2032
2033 HRESULT TiffEncoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
2034 {
2035     TiffEncoder *This;
2036     HRESULT ret;
2037
2038     TRACE("(%p,%s,%p)\n", pUnkOuter, debugstr_guid(iid), ppv);
2039
2040     *ppv = NULL;
2041
2042     if (pUnkOuter) return CLASS_E_NOAGGREGATION;
2043
2044     if (!load_libtiff())
2045     {
2046         ERR("Failed writing TIFF because unable to load %s\n",SONAME_LIBTIFF);
2047         return E_FAIL;
2048     }
2049
2050     This = HeapAlloc(GetProcessHeap(), 0, sizeof(TiffEncoder));
2051     if (!This) return E_OUTOFMEMORY;
2052
2053     This->IWICBitmapEncoder_iface.lpVtbl = &TiffEncoder_Vtbl;
2054     This->ref = 1;
2055     This->stream = NULL;
2056     InitializeCriticalSection(&This->lock);
2057     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": TiffEncoder.lock");
2058     This->tiff = NULL;
2059     This->initialized = FALSE;
2060     This->num_frames = 0;
2061     This->num_frames_committed = 0;
2062     This->committed = FALSE;
2063
2064     ret = IWICBitmapEncoder_QueryInterface(&This->IWICBitmapEncoder_iface, iid, ppv);
2065     IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
2066
2067     return ret;
2068 }
2069
2070 #else /* !SONAME_LIBTIFF */
2071
2072 HRESULT TiffDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
2073 {
2074     ERR("Trying to load TIFF picture, but Wine was compiled without TIFF support.\n");
2075     return E_FAIL;
2076 }
2077
2078 HRESULT TiffEncoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
2079 {
2080     ERR("Trying to save TIFF picture, but Wine was compiled without TIFF support.\n");
2081     return E_FAIL;
2082 }
2083
2084 #endif