dlls/windowscodecs/jpegformat.c

   1 /*
   2  * Copyright 2009 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 #ifdef HAVE_UNISTD_H
  23 # include <unistd.h>
  24 #endif
  25 #include <stdarg.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <setjmp.h>
  29
  30 #ifdef SONAME_LIBJPEG
  31 /* This is a hack, so jpeglib.h does not redefine INT32 and the like*/
  32 #define XMD_H
  33 #define UINT8 JPEG_UINT8
  34 #define UINT16 JPEG_UINT16
  35 #define boolean jpeg_boolean
  36 #undef HAVE_STDLIB_H
  37 # include <jpeglib.h>
  38 #undef HAVE_STDLIB_H
  39 #define HAVE_STDLIB_H 1
  40 #undef UINT8
  41 #undef UINT16
  42 #undef boolean
  43 #endif
  44
  45 #define COBJMACROS
  46
  47 #include "windef.h"
  48 #include "winbase.h"
  49 #include "objbase.h"
  50 #include "wincodec.h"
  51
  52 #include "wincodecs_private.h"
  53
  54 #include "wine/debug.h"
  55 #include "wine/library.h"
  56
  57 WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
  58
  59 #ifdef SONAME_LIBJPEG
  60 WINE_DECLARE_DEBUG_CHANNEL(jpeg);
  61
  62 static void *libjpeg_handle;
  63
  64 #define MAKE_FUNCPTR(f) static typeof(f) * p##f
  65 MAKE_FUNCPTR(jpeg_CreateCompress);
  66 MAKE_FUNCPTR(jpeg_CreateDecompress);
  67 MAKE_FUNCPTR(jpeg_destroy_compress);
  68 MAKE_FUNCPTR(jpeg_destroy_decompress);
  69 MAKE_FUNCPTR(jpeg_finish_compress);
  70 MAKE_FUNCPTR(jpeg_read_header);
  71 MAKE_FUNCPTR(jpeg_read_scanlines);
  72 MAKE_FUNCPTR(jpeg_resync_to_restart);
  73 MAKE_FUNCPTR(jpeg_set_defaults);
  74 MAKE_FUNCPTR(jpeg_start_compress);
  75 MAKE_FUNCPTR(jpeg_start_decompress);
  76 MAKE_FUNCPTR(jpeg_std_error);
  77 MAKE_FUNCPTR(jpeg_write_scanlines);
  78 #undef MAKE_FUNCPTR
  79
  80 static void *load_libjpeg(void)
  81 {
  82     if((libjpeg_handle = wine_dlopen(SONAME_LIBJPEG, RTLD_NOW, NULL, 0)) != NULL) {
  83
  84 #define LOAD_FUNCPTR(f) \
  85     if((p##f = wine_dlsym(libjpeg_handle, #f, NULL, 0)) == NULL) { \
  86         libjpeg_handle = NULL; \
  87         return NULL; \
  88     }
  89
  90         LOAD_FUNCPTR(jpeg_CreateCompress);
  91         LOAD_FUNCPTR(jpeg_CreateDecompress);
  92         LOAD_FUNCPTR(jpeg_destroy_compress);
  93         LOAD_FUNCPTR(jpeg_destroy_decompress);
  94         LOAD_FUNCPTR(jpeg_finish_compress);
  95         LOAD_FUNCPTR(jpeg_read_header);
  96         LOAD_FUNCPTR(jpeg_read_scanlines);
  97         LOAD_FUNCPTR(jpeg_resync_to_restart);
  98         LOAD_FUNCPTR(jpeg_set_defaults);
  99         LOAD_FUNCPTR(jpeg_start_compress);
 100         LOAD_FUNCPTR(jpeg_start_decompress);
 101         LOAD_FUNCPTR(jpeg_std_error);
 102         LOAD_FUNCPTR(jpeg_write_scanlines);
 103 #undef LOAD_FUNCPTR
 104     }
 105     return libjpeg_handle;
 106 }
 107
 108 static void error_exit_fn(j_common_ptr cinfo)
 109 {
 110     char message[JMSG_LENGTH_MAX];
 111     if (ERR_ON(jpeg))
 112     {
 113         cinfo->err->format_message(cinfo, message);
 114         ERR_(jpeg)("%s\n", message);
 115     }
 116     longjmp(*(jmp_buf*)cinfo->client_data, 1);
 117 }
 118
 119 static void emit_message_fn(j_common_ptr cinfo, int msg_level)
 120 {
 121     char message[JMSG_LENGTH_MAX];
 122
 123     if (msg_level < 0 && ERR_ON(jpeg))
 124     {
 125         cinfo->err->format_message(cinfo, message);
 126         ERR_(jpeg)("%s\n", message);
 127     }
 128     else if (msg_level == 0 && WARN_ON(jpeg))
 129     {
 130         cinfo->err->format_message(cinfo, message);
 131         WARN_(jpeg)("%s\n", message);
 132     }
 133     else if (msg_level > 0 && TRACE_ON(jpeg))
 134     {
 135         cinfo->err->format_message(cinfo, message);
 136         TRACE_(jpeg)("%s\n", message);
 137     }
 138 }
 139
 140 typedef struct {
 141     IWICBitmapDecoder IWICBitmapDecoder_iface;
 142     IWICBitmapFrameDecode IWICBitmapFrameDecode_iface;
 143     LONG ref;
 144     BOOL initialized;
 145     BOOL cinfo_initialized;
 146     IStream *stream;
 147     struct jpeg_decompress_struct cinfo;
 148     struct jpeg_error_mgr jerr;
 149     struct jpeg_source_mgr source_mgr;
 150     BYTE source_buffer[1024];
 151     BYTE *image_data;
 152     CRITICAL_SECTION lock;
 153 } JpegDecoder;
 154
 155 static inline JpegDecoder *impl_from_IWICBitmapDecoder(IWICBitmapDecoder *iface)
 156 {
 157     return CONTAINING_RECORD(iface, JpegDecoder, IWICBitmapDecoder_iface);
 158 }
 159
 160 static inline JpegDecoder *impl_from_IWICBitmapFrameDecode(IWICBitmapFrameDecode *iface)
 161 {
 162     return CONTAINING_RECORD(iface, JpegDecoder, IWICBitmapFrameDecode_iface);
 163 }
 164
 165 static inline JpegDecoder *decoder_from_decompress(j_decompress_ptr decompress)
 166 {
 167     return CONTAINING_RECORD(decompress, JpegDecoder, cinfo);
 168 }
 169
 170 static HRESULT WINAPI JpegDecoder_QueryInterface(IWICBitmapDecoder *iface, REFIID iid,
 171     void **ppv)
 172 {
 173     JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
 174     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 175
 176     if (!ppv) return E_INVALIDARG;
 177
 178     if (IsEqualIID(&IID_IUnknown, iid) || IsEqualIID(&IID_IWICBitmapDecoder, iid))
 179     {
 180         *ppv = This;
 181     }
 182     else
 183     {
 184         *ppv = NULL;
 185         return E_NOINTERFACE;
 186     }
 187
 188     IUnknown_AddRef((IUnknown*)*ppv);
 189     return S_OK;
 190 }
 191
 192 static ULONG WINAPI JpegDecoder_AddRef(IWICBitmapDecoder *iface)
 193 {
 194     JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
 195     ULONG ref = InterlockedIncrement(&This->ref);
 196
 197     TRACE("(%p) refcount=%u\n", iface, ref);
 198
 199     return ref;
 200 }
 201
 202 static ULONG WINAPI JpegDecoder_Release(IWICBitmapDecoder *iface)
 203 {
 204     JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
 205     ULONG ref = InterlockedDecrement(&This->ref);
 206
 207     TRACE("(%p) refcount=%u\n", iface, ref);
 208
 209     if (ref == 0)
 210     {
 211         This->lock.DebugInfo->Spare[0] = 0;
 212         DeleteCriticalSection(&This->lock);
 213         if (This->cinfo_initialized) pjpeg_destroy_decompress(&This->cinfo);
 214         if (This->stream) IStream_Release(This->stream);
 215         HeapFree(GetProcessHeap(), 0, This->image_data);
 216         HeapFree(GetProcessHeap(), 0, This);
 217     }
 218
 219     return ref;
 220 }
 221
 222 static HRESULT WINAPI JpegDecoder_QueryCapability(IWICBitmapDecoder *iface, IStream *pIStream,
 223     DWORD *pdwCapability)
 224 {
 225     FIXME("(%p,%p,%p): stub\n", iface, pIStream, pdwCapability);
 226     return E_NOTIMPL;
 227 }
 228
 229 static void source_mgr_init_source(j_decompress_ptr cinfo)
 230 {
 231 }
 232
 233 static jpeg_boolean source_mgr_fill_input_buffer(j_decompress_ptr cinfo)
 234 {
 235     JpegDecoder *This = decoder_from_decompress(cinfo);
 236     HRESULT hr;
 237     ULONG bytesread;
 238
 239     hr = IStream_Read(This->stream, This->source_buffer, 1024, &bytesread);
 240
 241     if (hr != S_OK || bytesread == 0)
 242     {
 243         return FALSE;
 244     }
 245     else
 246     {
 247         This->source_mgr.next_input_byte = This->source_buffer;
 248         This->source_mgr.bytes_in_buffer = bytesread;
 249         return TRUE;
 250     }
 251 }
 252
 253 static void source_mgr_skip_input_data(j_decompress_ptr cinfo, long num_bytes)
 254 {
 255     JpegDecoder *This = decoder_from_decompress(cinfo);
 256     LARGE_INTEGER seek;
 257
 258     if (num_bytes > This->source_mgr.bytes_in_buffer)
 259     {
 260         seek.QuadPart = num_bytes - This->source_mgr.bytes_in_buffer;
 261         IStream_Seek(This->stream, seek, STREAM_SEEK_CUR, NULL);
 262         This->source_mgr.bytes_in_buffer = 0;
 263     }
 264     else if (num_bytes > 0)
 265     {
 266         This->source_mgr.next_input_byte += num_bytes;
 267         This->source_mgr.bytes_in_buffer -= num_bytes;
 268     }
 269 }
 270
 271 static void source_mgr_term_source(j_decompress_ptr cinfo)
 272 {
 273 }
 274
 275 static HRESULT WINAPI JpegDecoder_Initialize(IWICBitmapDecoder *iface, IStream *pIStream,
 276     WICDecodeOptions cacheOptions)
 277 {
 278     JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
 279     int ret;
 280     LARGE_INTEGER seek;
 281     jmp_buf jmpbuf;
 282     TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOptions);
 283
 284     EnterCriticalSection(&This->lock);
 285
 286     if (This->cinfo_initialized)
 287     {
 288         LeaveCriticalSection(&This->lock);
 289         return WINCODEC_ERR_WRONGSTATE;
 290     }
 291
 292     pjpeg_std_error(&This->jerr);
 293
 294     This->jerr.error_exit = error_exit_fn;
 295     This->jerr.emit_message = emit_message_fn;
 296
 297     This->cinfo.err = &This->jerr;
 298
 299     This->cinfo.client_data = jmpbuf;
 300
 301     if (setjmp(jmpbuf))
 302     {
 303         LeaveCriticalSection(&This->lock);
 304         return E_FAIL;
 305     }
 306
 307     pjpeg_CreateDecompress(&This->cinfo, JPEG_LIB_VERSION, sizeof(struct jpeg_decompress_struct));
 308
 309     This->cinfo_initialized = TRUE;
 310
 311     This->stream = pIStream;
 312     IStream_AddRef(pIStream);
 313
 314     seek.QuadPart = 0;
 315     IStream_Seek(This->stream, seek, STREAM_SEEK_SET, NULL);
 316
 317     This->source_mgr.bytes_in_buffer = 0;
 318     This->source_mgr.init_source = source_mgr_init_source;
 319     This->source_mgr.fill_input_buffer = source_mgr_fill_input_buffer;
 320     This->source_mgr.skip_input_data = source_mgr_skip_input_data;
 321     This->source_mgr.resync_to_restart = pjpeg_resync_to_restart;
 322     This->source_mgr.term_source = source_mgr_term_source;
 323
 324     This->cinfo.src = &This->source_mgr;
 325
 326     ret = pjpeg_read_header(&This->cinfo, TRUE);
 327
 328     if (ret != JPEG_HEADER_OK) {
 329         WARN("Jpeg image in stream has bad format, read header returned %d.\n",ret);
 330         LeaveCriticalSection(&This->lock);
 331         return E_FAIL;
 332     }
 333
 334     switch (This->cinfo.jpeg_color_space)
 335     {
 336     case JCS_GRAYSCALE:
 337         This->cinfo.out_color_space = JCS_GRAYSCALE;
 338         break;
 339     case JCS_RGB:
 340     case JCS_YCbCr:
 341         This->cinfo.out_color_space = JCS_RGB;
 342         break;
 343     case JCS_CMYK:
 344     case JCS_YCCK:
 345         This->cinfo.out_color_space = JCS_CMYK;
 346         break;
 347     default:
 348         ERR("Unknown JPEG color space %i\n", This->cinfo.jpeg_color_space);
 349         LeaveCriticalSection(&This->lock);
 350         return E_FAIL;
 351     }
 352
 353     if (!pjpeg_start_decompress(&This->cinfo))
 354     {
 355         ERR("jpeg_start_decompress failed\n");
 356         LeaveCriticalSection(&This->lock);
 357         return E_FAIL;
 358     }
 359
 360     This->initialized = TRUE;
 361
 362     LeaveCriticalSection(&This->lock);
 363
 364     return S_OK;
 365 }
 366
 367 static HRESULT WINAPI JpegDecoder_GetContainerFormat(IWICBitmapDecoder *iface,
 368     GUID *pguidContainerFormat)
 369 {
 370     memcpy(pguidContainerFormat, &GUID_ContainerFormatJpeg, sizeof(GUID));
 371     return S_OK;
 372 }
 373
 374 static HRESULT WINAPI JpegDecoder_GetDecoderInfo(IWICBitmapDecoder *iface,
 375     IWICBitmapDecoderInfo **ppIDecoderInfo)
 376 {
 377     HRESULT hr;
 378     IWICComponentInfo *compinfo;
 379
 380     TRACE("(%p,%p)\n", iface, ppIDecoderInfo);
 381
 382     hr = CreateComponentInfo(&CLSID_WICJpegDecoder, &compinfo);
 383     if (FAILED(hr)) return hr;
 384
 385     hr = IWICComponentInfo_QueryInterface(compinfo, &IID_IWICBitmapDecoderInfo,
 386         (void**)ppIDecoderInfo);
 387
 388     IWICComponentInfo_Release(compinfo);
 389
 390     return hr;
 391 }
 392
 393 static HRESULT WINAPI JpegDecoder_CopyPalette(IWICBitmapDecoder *iface,
 394     IWICPalette *pIPalette)
 395 {
 396     TRACE("(%p,%p)\n", iface, pIPalette);
 397
 398     return WINCODEC_ERR_PALETTEUNAVAILABLE;
 399 }
 400
 401 static HRESULT WINAPI JpegDecoder_GetMetadataQueryReader(IWICBitmapDecoder *iface,
 402     IWICMetadataQueryReader **ppIMetadataQueryReader)
 403 {
 404     FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryReader);
 405     return E_NOTIMPL;
 406 }
 407
 408 static HRESULT WINAPI JpegDecoder_GetPreview(IWICBitmapDecoder *iface,
 409     IWICBitmapSource **ppIBitmapSource)
 410 {
 411     FIXME("(%p,%p): stub\n", iface, ppIBitmapSource);
 412     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 413 }
 414
 415 static HRESULT WINAPI JpegDecoder_GetColorContexts(IWICBitmapDecoder *iface,
 416     UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
 417 {
 418     FIXME("(%p,%u,%p,%p): stub\n", iface, cCount, ppIColorContexts, pcActualCount);
 419     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 420 }
 421
 422 static HRESULT WINAPI JpegDecoder_GetThumbnail(IWICBitmapDecoder *iface,
 423     IWICBitmapSource **ppIThumbnail)
 424 {
 425     FIXME("(%p,%p): stub\n", iface, ppIThumbnail);
 426     return WINCODEC_ERR_CODECNOTHUMBNAIL;
 427 }
 428
 429 static HRESULT WINAPI JpegDecoder_GetFrameCount(IWICBitmapDecoder *iface,
 430     UINT *pCount)
 431 {
 432     *pCount = 1;
 433     return S_OK;
 434 }
 435
 436 static HRESULT WINAPI JpegDecoder_GetFrame(IWICBitmapDecoder *iface,
 437     UINT index, IWICBitmapFrameDecode **ppIBitmapFrame)
 438 {
 439     JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
 440     TRACE("(%p,%u,%p)\n", iface, index, ppIBitmapFrame);
 441
 442     if (!This->initialized) return WINCODEC_ERR_NOTINITIALIZED;
 443
 444     if (index != 0) return E_INVALIDARG;
 445
 446     IWICBitmapDecoder_AddRef(iface);
 447     *ppIBitmapFrame = &This->IWICBitmapFrameDecode_iface;
 448
 449     return S_OK;
 450 }
 451
 452 static const IWICBitmapDecoderVtbl JpegDecoder_Vtbl = {
 453     JpegDecoder_QueryInterface,
 454     JpegDecoder_AddRef,
 455     JpegDecoder_Release,
 456     JpegDecoder_QueryCapability,
 457     JpegDecoder_Initialize,
 458     JpegDecoder_GetContainerFormat,
 459     JpegDecoder_GetDecoderInfo,
 460     JpegDecoder_CopyPalette,
 461     JpegDecoder_GetMetadataQueryReader,
 462     JpegDecoder_GetPreview,
 463     JpegDecoder_GetColorContexts,
 464     JpegDecoder_GetThumbnail,
 465     JpegDecoder_GetFrameCount,
 466     JpegDecoder_GetFrame
 467 };
 468
 469 static HRESULT WINAPI JpegDecoder_Frame_QueryInterface(IWICBitmapFrameDecode *iface, REFIID iid,
 470     void **ppv)
 471 {
 472     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 473
 474     if (!ppv) return E_INVALIDARG;
 475
 476     if (IsEqualIID(&IID_IUnknown, iid) ||
 477         IsEqualIID(&IID_IWICBitmapSource, iid) ||
 478         IsEqualIID(&IID_IWICBitmapFrameDecode, iid))
 479     {
 480         *ppv = iface;
 481     }
 482     else
 483     {
 484         *ppv = NULL;
 485         return E_NOINTERFACE;
 486     }
 487
 488     IUnknown_AddRef((IUnknown*)*ppv);
 489     return S_OK;
 490 }
 491
 492 static ULONG WINAPI JpegDecoder_Frame_AddRef(IWICBitmapFrameDecode *iface)
 493 {
 494     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 495     return IUnknown_AddRef((IUnknown*)This);
 496 }
 497
 498 static ULONG WINAPI JpegDecoder_Frame_Release(IWICBitmapFrameDecode *iface)
 499 {
 500     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 501     return IUnknown_Release((IUnknown*)This);
 502 }
 503
 504 static HRESULT WINAPI JpegDecoder_Frame_GetSize(IWICBitmapFrameDecode *iface,
 505     UINT *puiWidth, UINT *puiHeight)
 506 {
 507     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 508     *puiWidth = This->cinfo.output_width;
 509     *puiHeight = This->cinfo.output_height;
 510     TRACE("(%p)->(%u,%u)\n", iface, *puiWidth, *puiHeight);
 511     return S_OK;
 512 }
 513
 514 static HRESULT WINAPI JpegDecoder_Frame_GetPixelFormat(IWICBitmapFrameDecode *iface,
 515     WICPixelFormatGUID *pPixelFormat)
 516 {
 517     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 518     TRACE("(%p,%p)\n", iface, pPixelFormat);
 519     if (This->cinfo.out_color_space == JCS_RGB)
 520         memcpy(pPixelFormat, &GUID_WICPixelFormat24bppBGR, sizeof(GUID));
 521     else if (This->cinfo.out_color_space == JCS_CMYK)
 522         memcpy(pPixelFormat, &GUID_WICPixelFormat32bppCMYK, sizeof(GUID));
 523     else /* This->cinfo.out_color_space == JCS_GRAYSCALE */
 524         memcpy(pPixelFormat, &GUID_WICPixelFormat8bppGray, sizeof(GUID));
 525     return S_OK;
 526 }
 527
 528 static HRESULT WINAPI JpegDecoder_Frame_GetResolution(IWICBitmapFrameDecode *iface,
 529     double *pDpiX, double *pDpiY)
 530 {
 531     FIXME("(%p,%p,%p): stub\n", iface, pDpiX, pDpiY);
 532     return E_NOTIMPL;
 533 }
 534
 535 static HRESULT WINAPI JpegDecoder_Frame_CopyPalette(IWICBitmapFrameDecode *iface,
 536     IWICPalette *pIPalette)
 537 {
 538     FIXME("(%p,%p): stub\n", iface, pIPalette);
 539     return E_NOTIMPL;
 540 }
 541
 542 static HRESULT WINAPI JpegDecoder_Frame_CopyPixels(IWICBitmapFrameDecode *iface,
 543     const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
 544 {
 545     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 546     UINT bpp;
 547     UINT stride;
 548     UINT data_size;
 549     UINT max_row_needed;
 550     jmp_buf jmpbuf;
 551     WICRect rect;
 552     TRACE("(%p,%p,%u,%u,%p)\n", iface, prc, cbStride, cbBufferSize, pbBuffer);
 553
 554     if (!prc)
 555     {
 556         rect.X = 0;
 557         rect.Y = 0;
 558         rect.Width = This->cinfo.output_width;
 559         rect.Height = This->cinfo.output_height;
 560         prc = &rect;
 561     }
 562     else
 563     {
 564         if (prc->X < 0 || prc->Y < 0 || prc->X+prc->Width > This->cinfo.output_width ||
 565             prc->Y+prc->Height > This->cinfo.output_height)
 566             return E_INVALIDARG;
 567     }
 568
 569     if (This->cinfo.out_color_space == JCS_GRAYSCALE) bpp = 8;
 570     else if (This->cinfo.out_color_space == JCS_CMYK) bpp = 32;
 571     else bpp = 24;
 572
 573     stride = bpp * This->cinfo.output_width;
 574     data_size = stride * This->cinfo.output_height;
 575
 576     max_row_needed = prc->Y + prc->Height;
 577     if (max_row_needed > This->cinfo.output_height) return E_INVALIDARG;
 578
 579     EnterCriticalSection(&This->lock);
 580
 581     if (!This->image_data)
 582     {
 583         This->image_data = HeapAlloc(GetProcessHeap(), 0, data_size);
 584         if (!This->image_data)
 585         {
 586             LeaveCriticalSection(&This->lock);
 587             return E_OUTOFMEMORY;
 588         }
 589     }
 590
 591     This->cinfo.client_data = jmpbuf;
 592
 593     if (setjmp(jmpbuf))
 594     {
 595         LeaveCriticalSection(&This->lock);
 596         return E_FAIL;
 597     }
 598
 599     while (max_row_needed > This->cinfo.output_scanline)
 600     {
 601         UINT first_scanline = This->cinfo.output_scanline;
 602         UINT max_rows;
 603         JSAMPROW out_rows[4];
 604         UINT i;
 605         JDIMENSION ret;
 606
 607         max_rows = min(This->cinfo.output_height-first_scanline, 4);
 608         for (i=0; i<max_rows; i++)
 609             out_rows[i] = This->image_data + stride * (first_scanline+i);
 610
 611         ret = pjpeg_read_scanlines(&This->cinfo, out_rows, max_rows);
 612
 613         if (ret == 0)
 614         {
 615             ERR("read_scanlines failed\n");
 616             LeaveCriticalSection(&This->lock);
 617             return E_FAIL;
 618         }
 619
 620         if (bpp == 24)
 621         {
 622             /* libjpeg gives us RGB data and we want BGR, so byteswap the data */
 623             reverse_bgr8(3, This->image_data + stride * first_scanline,
 624                 This->cinfo.output_width, This->cinfo.output_scanline - first_scanline,
 625                 stride);
 626         }
 627
 628         if (This->cinfo.out_color_space == JCS_CMYK && This->cinfo.saw_Adobe_marker)
 629             /* Adobe JPEG's have inverted CMYK data. */
 630             for (i=0; i<data_size; i++)
 631                 This->image_data[i] ^= 0xff;
 632     }
 633
 634     LeaveCriticalSection(&This->lock);
 635
 636     return copy_pixels(bpp, This->image_data,
 637         This->cinfo.output_width, This->cinfo.output_height, stride,
 638         prc, cbStride, cbBufferSize, pbBuffer);
 639 }
 640
 641 static HRESULT WINAPI JpegDecoder_Frame_GetMetadataQueryReader(IWICBitmapFrameDecode *iface,
 642     IWICMetadataQueryReader **ppIMetadataQueryReader)
 643 {
 644     FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryReader);
 645     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 646 }
 647
 648 static HRESULT WINAPI JpegDecoder_Frame_GetColorContexts(IWICBitmapFrameDecode *iface,
 649     UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
 650 {
 651     FIXME("(%p,%u,%p,%p): stub\n", iface, cCount, ppIColorContexts, pcActualCount);
 652     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 653 }
 654
 655 static HRESULT WINAPI JpegDecoder_Frame_GetThumbnail(IWICBitmapFrameDecode *iface,
 656     IWICBitmapSource **ppIThumbnail)
 657 {
 658     FIXME("(%p,%p): stub\n", iface, ppIThumbnail);
 659     return WINCODEC_ERR_CODECNOTHUMBNAIL;
 660 }
 661
 662 static const IWICBitmapFrameDecodeVtbl JpegDecoder_Frame_Vtbl = {
 663     JpegDecoder_Frame_QueryInterface,
 664     JpegDecoder_Frame_AddRef,
 665     JpegDecoder_Frame_Release,
 666     JpegDecoder_Frame_GetSize,
 667     JpegDecoder_Frame_GetPixelFormat,
 668     JpegDecoder_Frame_GetResolution,
 669     JpegDecoder_Frame_CopyPalette,
 670     JpegDecoder_Frame_CopyPixels,
 671     JpegDecoder_Frame_GetMetadataQueryReader,
 672     JpegDecoder_Frame_GetColorContexts,
 673     JpegDecoder_Frame_GetThumbnail
 674 };
 675
 676 HRESULT JpegDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
 677 {
 678     JpegDecoder *This;
 679     HRESULT ret;
 680
 681     TRACE("(%p,%s,%p)\n", pUnkOuter, debugstr_guid(iid), ppv);
 682
 683     if (!libjpeg_handle && !load_libjpeg())
 684     {
 685         ERR("Failed reading JPEG because unable to find %s\n", SONAME_LIBJPEG);
 686         return E_FAIL;
 687     }
 688
 689     *ppv = NULL;
 690
 691     if (pUnkOuter) return CLASS_E_NOAGGREGATION;
 692
 693     This = HeapAlloc(GetProcessHeap(), 0, sizeof(JpegDecoder));
 694     if (!This) return E_OUTOFMEMORY;
 695
 696     This->IWICBitmapDecoder_iface.lpVtbl = &JpegDecoder_Vtbl;
 697     This->IWICBitmapFrameDecode_iface.lpVtbl = &JpegDecoder_Frame_Vtbl;
 698     This->ref = 1;
 699     This->initialized = FALSE;
 700     This->cinfo_initialized = FALSE;
 701     This->stream = NULL;
 702     This->image_data = NULL;
 703     InitializeCriticalSection(&This->lock);
 704     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": JpegDecoder.lock");
 705
 706     ret = IUnknown_QueryInterface((IUnknown*)This, iid, ppv);
 707     IUnknown_Release((IUnknown*)This);
 708
 709     return ret;
 710 }
 711
 712 typedef struct jpeg_compress_format {
 713     const WICPixelFormatGUID *guid;
 714     int bpp;
 715     int num_components;
 716     J_COLOR_SPACE color_space;
 717     int swap_rgb;
 718 } jpeg_compress_format;
 719
 720 static const jpeg_compress_format compress_formats[] = {
 721     { &GUID_WICPixelFormat24bppBGR, 24, 3, JCS_RGB, 1 },
 722     { &GUID_WICPixelFormat32bppCMYK, 32, 4, JCS_CMYK },
 723     { &GUID_WICPixelFormat8bppGray, 8, 1, JCS_GRAYSCALE },
 724     { 0 }
 725 };
 726
 727 typedef struct JpegEncoder {
 728     IWICBitmapEncoder IWICBitmapEncoder_iface;
 729     IWICBitmapFrameEncode IWICBitmapFrameEncode_iface;
 730     LONG ref;
 731     struct jpeg_compress_struct cinfo;
 732     struct jpeg_error_mgr jerr;
 733     struct jpeg_destination_mgr dest_mgr;
 734     int initialized;
 735     int frame_count;
 736     int frame_initialized;
 737     int started_compress;
 738     int lines_written;
 739     int frame_committed;
 740     UINT width, height;
 741     double xres, yres;
 742     const jpeg_compress_format *format;
 743     IStream *stream;
 744     CRITICAL_SECTION lock;
 745     BYTE dest_buffer[1024];
 746 } JpegEncoder;
 747
 748 static inline JpegEncoder *impl_from_IWICBitmapEncoder(IWICBitmapEncoder *iface)
 749 {
 750     return CONTAINING_RECORD(iface, JpegEncoder, IWICBitmapEncoder_iface);
 751 }
 752
 753 static inline JpegEncoder *impl_from_IWICBitmapFrameEncode(IWICBitmapFrameEncode *iface)
 754 {
 755     return CONTAINING_RECORD(iface, JpegEncoder, IWICBitmapFrameEncode_iface);
 756 }
 757
 758 static inline JpegEncoder *encoder_from_compress(j_compress_ptr compress)
 759 {
 760     return CONTAINING_RECORD(compress, JpegEncoder, cinfo);
 761 }
 762
 763 static void dest_mgr_init_destination(j_compress_ptr cinfo)
 764 {
 765     JpegEncoder *This = encoder_from_compress(cinfo);
 766
 767     This->dest_mgr.next_output_byte = This->dest_buffer;
 768     This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
 769 }
 770
 771 static jpeg_boolean dest_mgr_empty_output_buffer(j_compress_ptr cinfo)
 772 {
 773     JpegEncoder *This = encoder_from_compress(cinfo);
 774     HRESULT hr;
 775     ULONG byteswritten;
 776
 777     hr = IStream_Write(This->stream, This->dest_buffer,
 778         sizeof(This->dest_buffer), &byteswritten);
 779
 780     if (hr != S_OK || byteswritten == 0)
 781     {
 782         ERR("Failed writing data, hr=%x\n", hr);
 783         return FALSE;
 784     }
 785
 786     This->dest_mgr.next_output_byte = This->dest_buffer;
 787     This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
 788     return TRUE;
 789 }
 790
 791 static void dest_mgr_term_destination(j_compress_ptr cinfo)
 792 {
 793     JpegEncoder *This = encoder_from_compress(cinfo);
 794     ULONG byteswritten;
 795     HRESULT hr;
 796
 797     if (This->dest_mgr.free_in_buffer != sizeof(This->dest_buffer))
 798     {
 799         hr = IStream_Write(This->stream, This->dest_buffer,
 800             sizeof(This->dest_buffer) - This->dest_mgr.free_in_buffer, &byteswritten);
 801
 802         if (hr != S_OK || byteswritten == 0)
 803             ERR("Failed writing data, hr=%x\n", hr);
 804     }
 805 }
 806
 807 static HRESULT WINAPI JpegEncoder_Frame_QueryInterface(IWICBitmapFrameEncode *iface, REFIID iid,
 808     void **ppv)
 809 {
 810     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 811     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 812
 813     if (!ppv) return E_INVALIDARG;
 814
 815     if (IsEqualIID(&IID_IUnknown, iid) ||
 816         IsEqualIID(&IID_IWICBitmapFrameEncode, iid))
 817     {
 818         *ppv = &This->IWICBitmapFrameEncode_iface;
 819     }
 820     else
 821     {
 822         *ppv = NULL;
 823         return E_NOINTERFACE;
 824     }
 825
 826     IUnknown_AddRef((IUnknown*)*ppv);
 827     return S_OK;
 828 }
 829
 830 static ULONG WINAPI JpegEncoder_Frame_AddRef(IWICBitmapFrameEncode *iface)
 831 {
 832     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 833     return IWICBitmapEncoder_AddRef(&This->IWICBitmapEncoder_iface);
 834 }
 835
 836 static ULONG WINAPI JpegEncoder_Frame_Release(IWICBitmapFrameEncode *iface)
 837 {
 838     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 839     return IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
 840 }
 841
 842 static HRESULT WINAPI JpegEncoder_Frame_Initialize(IWICBitmapFrameEncode *iface,
 843     IPropertyBag2 *pIEncoderOptions)
 844 {
 845     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 846     TRACE("(%p,%p)\n", iface, pIEncoderOptions);
 847
 848     EnterCriticalSection(&This->lock);
 849
 850     if (This->frame_initialized)
 851     {
 852         LeaveCriticalSection(&This->lock);
 853         return WINCODEC_ERR_WRONGSTATE;
 854     }
 855
 856     This->frame_initialized = TRUE;
 857
 858     LeaveCriticalSection(&This->lock);
 859
 860     return S_OK;
 861 }
 862
 863 static HRESULT WINAPI JpegEncoder_Frame_SetSize(IWICBitmapFrameEncode *iface,
 864     UINT uiWidth, UINT uiHeight)
 865 {
 866     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 867     TRACE("(%p,%u,%u)\n", iface, uiWidth, uiHeight);
 868
 869     EnterCriticalSection(&This->lock);
 870
 871     if (!This->frame_initialized || This->started_compress)
 872     {
 873         LeaveCriticalSection(&This->lock);
 874         return WINCODEC_ERR_WRONGSTATE;
 875     }
 876
 877     This->width = uiWidth;
 878     This->height = uiHeight;
 879
 880     LeaveCriticalSection(&This->lock);
 881
 882     return S_OK;
 883 }
 884
 885 static HRESULT WINAPI JpegEncoder_Frame_SetResolution(IWICBitmapFrameEncode *iface,
 886     double dpiX, double dpiY)
 887 {
 888     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 889     TRACE("(%p,%0.2f,%0.2f)\n", iface, dpiX, dpiY);
 890
 891     EnterCriticalSection(&This->lock);
 892
 893     if (!This->frame_initialized || This->started_compress)
 894     {
 895         LeaveCriticalSection(&This->lock);
 896         return WINCODEC_ERR_WRONGSTATE;
 897     }
 898
 899     This->xres = dpiX;
 900     This->yres = dpiY;
 901
 902     LeaveCriticalSection(&This->lock);
 903
 904     return S_OK;
 905 }
 906
 907 static HRESULT WINAPI JpegEncoder_Frame_SetPixelFormat(IWICBitmapFrameEncode *iface,
 908     WICPixelFormatGUID *pPixelFormat)
 909 {
 910     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 911     int i;
 912     TRACE("(%p,%s)\n", iface, debugstr_guid(pPixelFormat));
 913
 914     EnterCriticalSection(&This->lock);
 915
 916     if (!This->frame_initialized || This->started_compress)
 917     {
 918         LeaveCriticalSection(&This->lock);
 919         return WINCODEC_ERR_WRONGSTATE;
 920     }
 921
 922     for (i=0; compress_formats[i].guid; i++)
 923     {
 924         if (memcmp(compress_formats[i].guid, pPixelFormat, sizeof(GUID)) == 0)
 925             break;
 926     }
 927
 928     if (!compress_formats[i].guid) i = 0;
 929
 930     This->format = &compress_formats[i];
 931     memcpy(pPixelFormat, This->format->guid, sizeof(GUID));
 932
 933     LeaveCriticalSection(&This->lock);
 934
 935     return S_OK;
 936 }
 937
 938 static HRESULT WINAPI JpegEncoder_Frame_SetColorContexts(IWICBitmapFrameEncode *iface,
 939     UINT cCount, IWICColorContext **ppIColorContext)
 940 {
 941     FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
 942     return E_NOTIMPL;
 943 }
 944
 945 static HRESULT WINAPI JpegEncoder_Frame_SetPalette(IWICBitmapFrameEncode *iface,
 946     IWICPalette *pIPalette)
 947 {
 948     FIXME("(%p,%p): stub\n", iface, pIPalette);
 949     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 950 }
 951
 952 static HRESULT WINAPI JpegEncoder_Frame_SetThumbnail(IWICBitmapFrameEncode *iface,
 953     IWICBitmapSource *pIThumbnail)
 954 {
 955     FIXME("(%p,%p): stub\n", iface, pIThumbnail);
 956     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 957 }
 958
 959 static HRESULT WINAPI JpegEncoder_Frame_WritePixels(IWICBitmapFrameEncode *iface,
 960     UINT lineCount, UINT cbStride, UINT cbBufferSize, BYTE *pbPixels)
 961 {
 962     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 963     jmp_buf jmpbuf;
 964     BYTE *swapped_data = NULL, *current_row;
 965     int line, row_size;
 966     TRACE("(%p,%u,%u,%u,%p)\n", iface, lineCount, cbStride, cbBufferSize, pbPixels);
 967
 968     EnterCriticalSection(&This->lock);
 969
 970     if (!This->frame_initialized || !This->width || !This->height || !This->format)
 971     {
 972         LeaveCriticalSection(&This->lock);
 973         return WINCODEC_ERR_WRONGSTATE;
 974     }
 975
 976     if (lineCount == 0 || lineCount + This->lines_written > This->height)
 977     {
 978         LeaveCriticalSection(&This->lock);
 979         return E_INVALIDARG;
 980     }
 981
 982     /* set up setjmp/longjmp error handling */
 983     if (setjmp(jmpbuf))
 984     {
 985         LeaveCriticalSection(&This->lock);
 986         HeapFree(GetProcessHeap(), 0, swapped_data);
 987         return E_FAIL;
 988     }
 989     This->cinfo.client_data = &jmpbuf;
 990
 991     if (!This->started_compress)
 992     {
 993         This->cinfo.image_width = This->width;
 994         This->cinfo.image_height = This->height;
 995         This->cinfo.input_components = This->format->num_components;
 996         This->cinfo.in_color_space = This->format->color_space;
 997
 998         pjpeg_set_defaults(&This->cinfo);
 999
1000         if (This->xres != 0.0 && This->yres != 0.0)
1001         {
1002             This->cinfo.density_unit = 1; /* dots per inch */
1003             This->cinfo.X_density = This->xres;
1004             This->cinfo.Y_density = This->yres;
1005         }
1006
1007         pjpeg_start_compress(&This->cinfo, TRUE);
1008
1009         This->started_compress = 1;
1010     }
1011
1012     row_size = This->format->bpp / 8 * This->width;
1013
1014     if (This->format->swap_rgb)
1015     {
1016         swapped_data = HeapAlloc(GetProcessHeap(), 0, row_size);
1017         if (!swapped_data)
1018         {
1019             LeaveCriticalSection(&This->lock);
1020             return E_OUTOFMEMORY;
1021         }
1022     }
1023
1024     for (line=0; line < lineCount; line++)
1025     {
1026         if (This->format->swap_rgb)
1027         {
1028             int x;
1029
1030             memcpy(swapped_data, pbPixels + (cbStride * line), row_size);
1031
1032             for (x=0; x < This->width; x++)
1033             {
1034                 BYTE b;
1035
1036                 b = swapped_data[x*3];
1037                 swapped_data[x*3] = swapped_data[x*3+2];
1038                 swapped_data[x*3+2] = b;
1039             }
1040
1041             current_row = swapped_data;
1042         }
1043         else
1044             current_row = pbPixels + (cbStride * line);
1045
1046         if (!pjpeg_write_scanlines(&This->cinfo, &current_row, 1))
1047         {
1048             ERR("failed writing scanlines\n");
1049             LeaveCriticalSection(&This->lock);
1050             HeapFree(GetProcessHeap(), 0, swapped_data);
1051             return E_FAIL;
1052         }
1053
1054         This->lines_written++;
1055     }
1056
1057     LeaveCriticalSection(&This->lock);
1058     HeapFree(GetProcessHeap(), 0, swapped_data);
1059
1060     return S_OK;
1061 }
1062
1063 static HRESULT WINAPI JpegEncoder_Frame_WriteSource(IWICBitmapFrameEncode *iface,
1064     IWICBitmapSource *pIBitmapSource, WICRect *prc)
1065 {
1066     FIXME("(%p,%p,%p): stub\n", iface, pIBitmapSource, prc);
1067     return E_NOTIMPL;
1068 }
1069
1070 static HRESULT WINAPI JpegEncoder_Frame_Commit(IWICBitmapFrameEncode *iface)
1071 {
1072     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
1073     jmp_buf jmpbuf;
1074     TRACE("(%p)\n", iface);
1075
1076     EnterCriticalSection(&This->lock);
1077
1078     if (!This->started_compress || This->lines_written != This->height || This->frame_committed)
1079     {
1080         LeaveCriticalSection(&This->lock);
1081         return WINCODEC_ERR_WRONGSTATE;
1082     }
1083
1084     /* set up setjmp/longjmp error handling */
1085     if (setjmp(jmpbuf))
1086     {
1087         LeaveCriticalSection(&This->lock);
1088         return E_FAIL;
1089     }
1090     This->cinfo.client_data = &jmpbuf;
1091
1092     pjpeg_finish_compress(&This->cinfo);
1093
1094     This->frame_committed = TRUE;
1095
1096     LeaveCriticalSection(&This->lock);
1097
1098     return S_OK;
1099 }
1100
1101 static HRESULT WINAPI JpegEncoder_Frame_GetMetadataQueryWriter(IWICBitmapFrameEncode *iface,
1102     IWICMetadataQueryWriter **ppIMetadataQueryWriter)
1103 {
1104     FIXME("(%p, %p): stub\n", iface, ppIMetadataQueryWriter);
1105     return E_NOTIMPL;
1106 }
1107
1108 static const IWICBitmapFrameEncodeVtbl JpegEncoder_FrameVtbl = {
1109     JpegEncoder_Frame_QueryInterface,
1110     JpegEncoder_Frame_AddRef,
1111     JpegEncoder_Frame_Release,
1112     JpegEncoder_Frame_Initialize,
1113     JpegEncoder_Frame_SetSize,
1114     JpegEncoder_Frame_SetResolution,
1115     JpegEncoder_Frame_SetPixelFormat,
1116     JpegEncoder_Frame_SetColorContexts,
1117     JpegEncoder_Frame_SetPalette,
1118     JpegEncoder_Frame_SetThumbnail,
1119     JpegEncoder_Frame_WritePixels,
1120     JpegEncoder_Frame_WriteSource,
1121     JpegEncoder_Frame_Commit,
1122     JpegEncoder_Frame_GetMetadataQueryWriter
1123 };
1124
1125 static HRESULT WINAPI JpegEncoder_QueryInterface(IWICBitmapEncoder *iface, REFIID iid,
1126     void **ppv)
1127 {
1128     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1129     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
1130
1131     if (!ppv) return E_INVALIDARG;
1132
1133     if (IsEqualIID(&IID_IUnknown, iid) ||
1134         IsEqualIID(&IID_IWICBitmapEncoder, iid))
1135     {
1136         *ppv = This;
1137     }
1138     else
1139     {
1140         *ppv = NULL;
1141         return E_NOINTERFACE;
1142     }
1143
1144     IUnknown_AddRef((IUnknown*)*ppv);
1145     return S_OK;
1146 }
1147
1148 static ULONG WINAPI JpegEncoder_AddRef(IWICBitmapEncoder *iface)
1149 {
1150     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1151     ULONG ref = InterlockedIncrement(&This->ref);
1152
1153     TRACE("(%p) refcount=%u\n", iface, ref);
1154
1155     return ref;
1156 }
1157
1158 static ULONG WINAPI JpegEncoder_Release(IWICBitmapEncoder *iface)
1159 {
1160     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1161     ULONG ref = InterlockedDecrement(&This->ref);
1162
1163     TRACE("(%p) refcount=%u\n", iface, ref);
1164
1165     if (ref == 0)
1166     {
1167         This->lock.DebugInfo->Spare[0] = 0;
1168         DeleteCriticalSection(&This->lock);
1169         if (This->initialized) pjpeg_destroy_compress(&This->cinfo);
1170         if (This->stream) IStream_Release(This->stream);
1171         HeapFree(GetProcessHeap(), 0, This);
1172     }
1173
1174     return ref;
1175 }
1176
1177 static HRESULT WINAPI JpegEncoder_Initialize(IWICBitmapEncoder *iface,
1178     IStream *pIStream, WICBitmapEncoderCacheOption cacheOption)
1179 {
1180     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1181     jmp_buf jmpbuf;
1182
1183     TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOption);
1184
1185     EnterCriticalSection(&This->lock);
1186
1187     if (This->initialized)
1188     {
1189         LeaveCriticalSection(&This->lock);
1190         return WINCODEC_ERR_WRONGSTATE;
1191     }
1192
1193     pjpeg_std_error(&This->jerr);
1194
1195     This->jerr.error_exit = error_exit_fn;
1196     This->jerr.emit_message = emit_message_fn;
1197
1198     This->cinfo.err = &This->jerr;
1199
1200     This->cinfo.client_data = &jmpbuf;
1201
1202     if (setjmp(jmpbuf))
1203     {
1204         LeaveCriticalSection(&This->lock);
1205         return E_FAIL;
1206     }
1207
1208     pjpeg_CreateCompress(&This->cinfo, JPEG_LIB_VERSION, sizeof(struct jpeg_compress_struct));
1209
1210     This->stream = pIStream;
1211     IStream_AddRef(pIStream);
1212
1213     This->dest_mgr.next_output_byte = This->dest_buffer;
1214     This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
1215
1216     This->dest_mgr.init_destination = dest_mgr_init_destination;
1217     This->dest_mgr.empty_output_buffer = dest_mgr_empty_output_buffer;
1218     This->dest_mgr.term_destination = dest_mgr_term_destination;
1219
1220     This->cinfo.dest = &This->dest_mgr;
1221
1222     This->initialized = TRUE;
1223
1224     LeaveCriticalSection(&This->lock);
1225
1226     return S_OK;
1227 }
1228
1229 static HRESULT WINAPI JpegEncoder_GetContainerFormat(IWICBitmapEncoder *iface,
1230     GUID *pguidContainerFormat)
1231 {
1232     FIXME("(%p,%s): stub\n", iface, debugstr_guid(pguidContainerFormat));
1233     return E_NOTIMPL;
1234 }
1235
1236 static HRESULT WINAPI JpegEncoder_GetEncoderInfo(IWICBitmapEncoder *iface,
1237     IWICBitmapEncoderInfo **ppIEncoderInfo)
1238 {
1239     FIXME("(%p,%p): stub\n", iface, ppIEncoderInfo);
1240     return E_NOTIMPL;
1241 }
1242
1243 static HRESULT WINAPI JpegEncoder_SetColorContexts(IWICBitmapEncoder *iface,
1244     UINT cCount, IWICColorContext **ppIColorContext)
1245 {
1246     FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
1247     return E_NOTIMPL;
1248 }
1249
1250 static HRESULT WINAPI JpegEncoder_SetPalette(IWICBitmapEncoder *iface, IWICPalette *pIPalette)
1251 {
1252     TRACE("(%p,%p)\n", iface, pIPalette);
1253     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1254 }
1255
1256 static HRESULT WINAPI JpegEncoder_SetThumbnail(IWICBitmapEncoder *iface, IWICBitmapSource *pIThumbnail)
1257 {
1258     TRACE("(%p,%p)\n", iface, pIThumbnail);
1259     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1260 }
1261
1262 static HRESULT WINAPI JpegEncoder_SetPreview(IWICBitmapEncoder *iface, IWICBitmapSource *pIPreview)
1263 {
1264     TRACE("(%p,%p)\n", iface, pIPreview);
1265     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1266 }
1267
1268 static HRESULT WINAPI JpegEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
1269     IWICBitmapFrameEncode **ppIFrameEncode, IPropertyBag2 **ppIEncoderOptions)
1270 {
1271     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1272     HRESULT hr;
1273
1274     TRACE("(%p,%p,%p)\n", iface, ppIFrameEncode, ppIEncoderOptions);
1275
1276     EnterCriticalSection(&This->lock);
1277
1278     if (This->frame_count != 0)
1279     {
1280         LeaveCriticalSection(&This->lock);
1281         return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1282     }
1283
1284     if (!This->initialized)
1285     {
1286         LeaveCriticalSection(&This->lock);
1287         return WINCODEC_ERR_NOTINITIALIZED;
1288     }
1289
1290     hr = CreatePropertyBag2(ppIEncoderOptions);
1291     if (FAILED(hr))
1292     {
1293         LeaveCriticalSection(&This->lock);
1294         return hr;
1295     }
1296
1297     This->frame_count = 1;
1298
1299     LeaveCriticalSection(&This->lock);
1300
1301     IWICBitmapEncoder_AddRef(iface);
1302     *ppIFrameEncode = &This->IWICBitmapFrameEncode_iface;
1303
1304     return S_OK;
1305 }
1306
1307 static HRESULT WINAPI JpegEncoder_Commit(IWICBitmapEncoder *iface)
1308 {
1309     FIXME("(%p): stub\n", iface);
1310     return E_NOTIMPL;
1311 }
1312
1313 static HRESULT WINAPI JpegEncoder_GetMetadataQueryWriter(IWICBitmapEncoder *iface,
1314     IWICMetadataQueryWriter **ppIMetadataQueryWriter)
1315 {
1316     FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryWriter);
1317     return E_NOTIMPL;
1318 }
1319
1320 static const IWICBitmapEncoderVtbl JpegEncoder_Vtbl = {
1321     JpegEncoder_QueryInterface,
1322     JpegEncoder_AddRef,
1323     JpegEncoder_Release,
1324     JpegEncoder_Initialize,
1325     JpegEncoder_GetContainerFormat,
1326     JpegEncoder_GetEncoderInfo,
1327     JpegEncoder_SetColorContexts,
1328     JpegEncoder_SetPalette,
1329     JpegEncoder_SetThumbnail,
1330     JpegEncoder_SetPreview,
1331     JpegEncoder_CreateNewFrame,
1332     JpegEncoder_Commit,
1333     JpegEncoder_GetMetadataQueryWriter
1334 };
1335
1336 HRESULT JpegEncoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
1337 {
1338     JpegEncoder *This;
1339     HRESULT ret;
1340
1341     TRACE("(%p,%s,%p)\n", pUnkOuter, debugstr_guid(iid), ppv);
1342
1343     *ppv = NULL;
1344
1345     if (pUnkOuter) return CLASS_E_NOAGGREGATION;
1346
1347     if (!libjpeg_handle && !load_libjpeg())
1348     {
1349         ERR("Failed writing JPEG because unable to find %s\n",SONAME_LIBJPEG);
1350         return E_FAIL;
1351     }
1352
1353     This = HeapAlloc(GetProcessHeap(), 0, sizeof(JpegEncoder));
1354     if (!This) return E_OUTOFMEMORY;
1355
1356     This->IWICBitmapEncoder_iface.lpVtbl = &JpegEncoder_Vtbl;
1357     This->IWICBitmapFrameEncode_iface.lpVtbl = &JpegEncoder_FrameVtbl;
1358     This->ref = 1;
1359     This->initialized = 0;
1360     This->frame_count = 0;
1361     This->frame_initialized = 0;
1362     This->started_compress = 0;
1363     This->lines_written = 0;
1364     This->frame_committed = 0;
1365     This->width = This->height = 0;
1366     This->xres = This->yres = 0.0;
1367     This->format = NULL;
1368     This->stream = NULL;
1369     InitializeCriticalSection(&This->lock);
1370     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": JpegEncoder.lock");
1371
1372     ret = IUnknown_QueryInterface((IUnknown*)This, iid, ppv);
1373     IUnknown_Release((IUnknown*)This);
1374
1375     return ret;
1376 }
1377
1378 #else /* !defined(SONAME_LIBJPEG) */
1379
1380 HRESULT JpegDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
1381 {
1382     ERR("Trying to load JPEG picture, but JPEG support is not compiled in.\n");
1383     return E_FAIL;
1384 }
1385
1386 HRESULT JpegEncoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
1387 {
1388     ERR("Trying to save JPEG picture, but JPEG support is not compiled in.\n");
1389     return E_FAIL;
1390 }
1391
1392 #endif