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
  51 #include "wincodecs_private.h"
  52
  53 #include "wine/debug.h"
  54 #include "wine/library.h"
  55
  56 WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
  57
  58 #ifdef SONAME_LIBJPEG
  59 WINE_DECLARE_DEBUG_CHANNEL(jpeg);
  60
  61 static void *libjpeg_handle;
  62
  63 static const WCHAR wszImageQuality[] = {'I','m','a','g','e','Q','u','a','l','i','t','y',0};
  64 static const WCHAR wszBitmapTransform[] = {'B','i','t','m','a','p','T','r','a','n','s','f','o','r','m',0};
  65 static const WCHAR wszLuminance[] = {'L','u','m','i','n','a','n','c','e',0};
  66 static const WCHAR wszChrominance[] = {'C','h','r','o','m','i','n','a','n','c','e',0};
  67 static const WCHAR wszJpegYCrCbSubsampling[] = {'J','p','e','g','Y','C','r','C','b','S','u','b','s','a','m','p','l','i','n','g',0};
  68 static const WCHAR wszSuppressApp0[] = {'S','u','p','p','r','e','s','s','A','p','p','0',0};
  69
  70 #define MAKE_FUNCPTR(f) static typeof(f) * p##f
  71 MAKE_FUNCPTR(jpeg_CreateCompress);
  72 MAKE_FUNCPTR(jpeg_CreateDecompress);
  73 MAKE_FUNCPTR(jpeg_destroy_compress);
  74 MAKE_FUNCPTR(jpeg_destroy_decompress);
  75 MAKE_FUNCPTR(jpeg_finish_compress);
  76 MAKE_FUNCPTR(jpeg_read_header);
  77 MAKE_FUNCPTR(jpeg_read_scanlines);
  78 MAKE_FUNCPTR(jpeg_resync_to_restart);
  79 MAKE_FUNCPTR(jpeg_set_defaults);
  80 MAKE_FUNCPTR(jpeg_start_compress);
  81 MAKE_FUNCPTR(jpeg_start_decompress);
  82 MAKE_FUNCPTR(jpeg_std_error);
  83 MAKE_FUNCPTR(jpeg_write_scanlines);
  84 #undef MAKE_FUNCPTR
  85
  86 static void *load_libjpeg(void)
  87 {
  88     if((libjpeg_handle = wine_dlopen(SONAME_LIBJPEG, RTLD_NOW, NULL, 0)) != NULL) {
  89
  90 #define LOAD_FUNCPTR(f) \
  91     if((p##f = wine_dlsym(libjpeg_handle, #f, NULL, 0)) == NULL) { \
  92         libjpeg_handle = NULL; \
  93         return NULL; \
  94     }
  95
  96         LOAD_FUNCPTR(jpeg_CreateCompress);
  97         LOAD_FUNCPTR(jpeg_CreateDecompress);
  98         LOAD_FUNCPTR(jpeg_destroy_compress);
  99         LOAD_FUNCPTR(jpeg_destroy_decompress);
 100         LOAD_FUNCPTR(jpeg_finish_compress);
 101         LOAD_FUNCPTR(jpeg_read_header);
 102         LOAD_FUNCPTR(jpeg_read_scanlines);
 103         LOAD_FUNCPTR(jpeg_resync_to_restart);
 104         LOAD_FUNCPTR(jpeg_set_defaults);
 105         LOAD_FUNCPTR(jpeg_start_compress);
 106         LOAD_FUNCPTR(jpeg_start_decompress);
 107         LOAD_FUNCPTR(jpeg_std_error);
 108         LOAD_FUNCPTR(jpeg_write_scanlines);
 109 #undef LOAD_FUNCPTR
 110     }
 111     return libjpeg_handle;
 112 }
 113
 114 static void error_exit_fn(j_common_ptr cinfo)
 115 {
 116     char message[JMSG_LENGTH_MAX];
 117     if (ERR_ON(jpeg))
 118     {
 119         cinfo->err->format_message(cinfo, message);
 120         ERR_(jpeg)("%s\n", message);
 121     }
 122     longjmp(*(jmp_buf*)cinfo->client_data, 1);
 123 }
 124
 125 static void emit_message_fn(j_common_ptr cinfo, int msg_level)
 126 {
 127     char message[JMSG_LENGTH_MAX];
 128
 129     if (msg_level < 0 && ERR_ON(jpeg))
 130     {
 131         cinfo->err->format_message(cinfo, message);
 132         ERR_(jpeg)("%s\n", message);
 133     }
 134     else if (msg_level == 0 && WARN_ON(jpeg))
 135     {
 136         cinfo->err->format_message(cinfo, message);
 137         WARN_(jpeg)("%s\n", message);
 138     }
 139     else if (msg_level > 0 && TRACE_ON(jpeg))
 140     {
 141         cinfo->err->format_message(cinfo, message);
 142         TRACE_(jpeg)("%s\n", message);
 143     }
 144 }
 145
 146 typedef struct {
 147     IWICBitmapDecoder IWICBitmapDecoder_iface;
 148     IWICBitmapFrameDecode IWICBitmapFrameDecode_iface;
 149     IWICMetadataBlockReader IWICMetadataBlockReader_iface;
 150     LONG ref;
 151     BOOL initialized;
 152     BOOL cinfo_initialized;
 153     IStream *stream;
 154     struct jpeg_decompress_struct cinfo;
 155     struct jpeg_error_mgr jerr;
 156     struct jpeg_source_mgr source_mgr;
 157     BYTE source_buffer[1024];
 158     BYTE *image_data;
 159     CRITICAL_SECTION lock;
 160 } JpegDecoder;
 161
 162 static inline JpegDecoder *impl_from_IWICBitmapDecoder(IWICBitmapDecoder *iface)
 163 {
 164     return CONTAINING_RECORD(iface, JpegDecoder, IWICBitmapDecoder_iface);
 165 }
 166
 167 static inline JpegDecoder *impl_from_IWICBitmapFrameDecode(IWICBitmapFrameDecode *iface)
 168 {
 169     return CONTAINING_RECORD(iface, JpegDecoder, IWICBitmapFrameDecode_iface);
 170 }
 171
 172 static inline JpegDecoder *decoder_from_decompress(j_decompress_ptr decompress)
 173 {
 174     return CONTAINING_RECORD(decompress, JpegDecoder, cinfo);
 175 }
 176
 177 static inline JpegDecoder *impl_from_IWICMetadataBlockReader(IWICMetadataBlockReader *iface)
 178 {
 179     return CONTAINING_RECORD(iface, JpegDecoder, IWICMetadataBlockReader_iface);
 180 }
 181
 182 static HRESULT WINAPI JpegDecoder_QueryInterface(IWICBitmapDecoder *iface, REFIID iid,
 183     void **ppv)
 184 {
 185     JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
 186     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 187
 188     if (!ppv) return E_INVALIDARG;
 189
 190     if (IsEqualIID(&IID_IUnknown, iid) ||
 191         IsEqualIID(&IID_IWICBitmapDecoder, iid))
 192     {
 193         *ppv = &This->IWICBitmapDecoder_iface;
 194     }
 195     else
 196     {
 197         *ppv = NULL;
 198         return E_NOINTERFACE;
 199     }
 200
 201     IUnknown_AddRef((IUnknown*)*ppv);
 202     return S_OK;
 203 }
 204
 205 static ULONG WINAPI JpegDecoder_AddRef(IWICBitmapDecoder *iface)
 206 {
 207     JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
 208     ULONG ref = InterlockedIncrement(&This->ref);
 209
 210     TRACE("(%p) refcount=%u\n", iface, ref);
 211
 212     return ref;
 213 }
 214
 215 static ULONG WINAPI JpegDecoder_Release(IWICBitmapDecoder *iface)
 216 {
 217     JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
 218     ULONG ref = InterlockedDecrement(&This->ref);
 219
 220     TRACE("(%p) refcount=%u\n", iface, ref);
 221
 222     if (ref == 0)
 223     {
 224         This->lock.DebugInfo->Spare[0] = 0;
 225         DeleteCriticalSection(&This->lock);
 226         if (This->cinfo_initialized) pjpeg_destroy_decompress(&This->cinfo);
 227         if (This->stream) IStream_Release(This->stream);
 228         HeapFree(GetProcessHeap(), 0, This->image_data);
 229         HeapFree(GetProcessHeap(), 0, This);
 230     }
 231
 232     return ref;
 233 }
 234
 235 static HRESULT WINAPI JpegDecoder_QueryCapability(IWICBitmapDecoder *iface, IStream *stream,
 236     DWORD *capability)
 237 {
 238     HRESULT hr;
 239
 240     TRACE("(%p,%p,%p)\n", iface, stream, capability);
 241
 242     if (!stream || !capability) return E_INVALIDARG;
 243
 244     hr = IWICBitmapDecoder_Initialize(iface, stream, WICDecodeMetadataCacheOnDemand);
 245     if (hr != S_OK) return hr;
 246
 247     *capability = WICBitmapDecoderCapabilityCanDecodeAllImages |
 248                   WICBitmapDecoderCapabilityCanDecodeSomeImages;
 249     /* FIXME: WICBitmapDecoderCapabilityCanEnumerateMetadata */
 250     return S_OK;
 251 }
 252
 253 static void source_mgr_init_source(j_decompress_ptr cinfo)
 254 {
 255 }
 256
 257 static jpeg_boolean source_mgr_fill_input_buffer(j_decompress_ptr cinfo)
 258 {
 259     JpegDecoder *This = decoder_from_decompress(cinfo);
 260     HRESULT hr;
 261     ULONG bytesread;
 262
 263     hr = IStream_Read(This->stream, This->source_buffer, 1024, &bytesread);
 264
 265     if (FAILED(hr) || bytesread == 0)
 266     {
 267         return FALSE;
 268     }
 269     else
 270     {
 271         This->source_mgr.next_input_byte = This->source_buffer;
 272         This->source_mgr.bytes_in_buffer = bytesread;
 273         return TRUE;
 274     }
 275 }
 276
 277 static void source_mgr_skip_input_data(j_decompress_ptr cinfo, long num_bytes)
 278 {
 279     JpegDecoder *This = decoder_from_decompress(cinfo);
 280     LARGE_INTEGER seek;
 281
 282     if (num_bytes > This->source_mgr.bytes_in_buffer)
 283     {
 284         seek.QuadPart = num_bytes - This->source_mgr.bytes_in_buffer;
 285         IStream_Seek(This->stream, seek, STREAM_SEEK_CUR, NULL);
 286         This->source_mgr.bytes_in_buffer = 0;
 287     }
 288     else if (num_bytes > 0)
 289     {
 290         This->source_mgr.next_input_byte += num_bytes;
 291         This->source_mgr.bytes_in_buffer -= num_bytes;
 292     }
 293 }
 294
 295 static void source_mgr_term_source(j_decompress_ptr cinfo)
 296 {
 297 }
 298
 299 static HRESULT WINAPI JpegDecoder_Initialize(IWICBitmapDecoder *iface, IStream *pIStream,
 300     WICDecodeOptions cacheOptions)
 301 {
 302     JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
 303     int ret;
 304     LARGE_INTEGER seek;
 305     jmp_buf jmpbuf;
 306     TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOptions);
 307
 308     EnterCriticalSection(&This->lock);
 309
 310     if (This->cinfo_initialized)
 311     {
 312         LeaveCriticalSection(&This->lock);
 313         return WINCODEC_ERR_WRONGSTATE;
 314     }
 315
 316     pjpeg_std_error(&This->jerr);
 317
 318     This->jerr.error_exit = error_exit_fn;
 319     This->jerr.emit_message = emit_message_fn;
 320
 321     This->cinfo.err = &This->jerr;
 322
 323     This->cinfo.client_data = jmpbuf;
 324
 325     if (setjmp(jmpbuf))
 326     {
 327         LeaveCriticalSection(&This->lock);
 328         return E_FAIL;
 329     }
 330
 331     pjpeg_CreateDecompress(&This->cinfo, JPEG_LIB_VERSION, sizeof(struct jpeg_decompress_struct));
 332
 333     This->cinfo_initialized = TRUE;
 334
 335     This->stream = pIStream;
 336     IStream_AddRef(pIStream);
 337
 338     seek.QuadPart = 0;
 339     IStream_Seek(This->stream, seek, STREAM_SEEK_SET, NULL);
 340
 341     This->source_mgr.bytes_in_buffer = 0;
 342     This->source_mgr.init_source = source_mgr_init_source;
 343     This->source_mgr.fill_input_buffer = source_mgr_fill_input_buffer;
 344     This->source_mgr.skip_input_data = source_mgr_skip_input_data;
 345     This->source_mgr.resync_to_restart = pjpeg_resync_to_restart;
 346     This->source_mgr.term_source = source_mgr_term_source;
 347
 348     This->cinfo.src = &This->source_mgr;
 349
 350     ret = pjpeg_read_header(&This->cinfo, TRUE);
 351
 352     if (ret != JPEG_HEADER_OK) {
 353         WARN("Jpeg image in stream has bad format, read header returned %d.\n",ret);
 354         LeaveCriticalSection(&This->lock);
 355         return E_FAIL;
 356     }
 357
 358     switch (This->cinfo.jpeg_color_space)
 359     {
 360     case JCS_GRAYSCALE:
 361         This->cinfo.out_color_space = JCS_GRAYSCALE;
 362         break;
 363     case JCS_RGB:
 364     case JCS_YCbCr:
 365         This->cinfo.out_color_space = JCS_RGB;
 366         break;
 367     case JCS_CMYK:
 368     case JCS_YCCK:
 369         This->cinfo.out_color_space = JCS_CMYK;
 370         break;
 371     default:
 372         ERR("Unknown JPEG color space %i\n", This->cinfo.jpeg_color_space);
 373         LeaveCriticalSection(&This->lock);
 374         return E_FAIL;
 375     }
 376
 377     if (!pjpeg_start_decompress(&This->cinfo))
 378     {
 379         ERR("jpeg_start_decompress failed\n");
 380         LeaveCriticalSection(&This->lock);
 381         return E_FAIL;
 382     }
 383
 384     This->initialized = TRUE;
 385
 386     LeaveCriticalSection(&This->lock);
 387
 388     return S_OK;
 389 }
 390
 391 static HRESULT WINAPI JpegDecoder_GetContainerFormat(IWICBitmapDecoder *iface,
 392     GUID *pguidContainerFormat)
 393 {
 394     memcpy(pguidContainerFormat, &GUID_ContainerFormatJpeg, sizeof(GUID));
 395     return S_OK;
 396 }
 397
 398 static HRESULT WINAPI JpegDecoder_GetDecoderInfo(IWICBitmapDecoder *iface,
 399     IWICBitmapDecoderInfo **ppIDecoderInfo)
 400 {
 401     TRACE("(%p,%p)\n", iface, ppIDecoderInfo);
 402
 403     return get_decoder_info(&CLSID_WICJpegDecoder, ppIDecoderInfo);
 404 }
 405
 406 static HRESULT WINAPI JpegDecoder_CopyPalette(IWICBitmapDecoder *iface,
 407     IWICPalette *pIPalette)
 408 {
 409     TRACE("(%p,%p)\n", iface, pIPalette);
 410
 411     return WINCODEC_ERR_PALETTEUNAVAILABLE;
 412 }
 413
 414 static HRESULT WINAPI JpegDecoder_GetMetadataQueryReader(IWICBitmapDecoder *iface,
 415     IWICMetadataQueryReader **reader)
 416 {
 417     TRACE("(%p,%p)\n", iface, reader);
 418
 419     if (!reader) return E_INVALIDARG;
 420
 421     *reader = NULL;
 422     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 423 }
 424
 425 static HRESULT WINAPI JpegDecoder_GetPreview(IWICBitmapDecoder *iface,
 426     IWICBitmapSource **ppIBitmapSource)
 427 {
 428     FIXME("(%p,%p): stub\n", iface, ppIBitmapSource);
 429     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 430 }
 431
 432 static HRESULT WINAPI JpegDecoder_GetColorContexts(IWICBitmapDecoder *iface,
 433     UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
 434 {
 435     FIXME("(%p,%u,%p,%p): stub\n", iface, cCount, ppIColorContexts, pcActualCount);
 436     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 437 }
 438
 439 static HRESULT WINAPI JpegDecoder_GetThumbnail(IWICBitmapDecoder *iface,
 440     IWICBitmapSource **ppIThumbnail)
 441 {
 442     FIXME("(%p,%p): stub\n", iface, ppIThumbnail);
 443     return WINCODEC_ERR_CODECNOTHUMBNAIL;
 444 }
 445
 446 static HRESULT WINAPI JpegDecoder_GetFrameCount(IWICBitmapDecoder *iface,
 447     UINT *pCount)
 448 {
 449     if (!pCount) return E_INVALIDARG;
 450
 451     *pCount = 1;
 452     return S_OK;
 453 }
 454
 455 static HRESULT WINAPI JpegDecoder_GetFrame(IWICBitmapDecoder *iface,
 456     UINT index, IWICBitmapFrameDecode **ppIBitmapFrame)
 457 {
 458     JpegDecoder *This = impl_from_IWICBitmapDecoder(iface);
 459     TRACE("(%p,%u,%p)\n", iface, index, ppIBitmapFrame);
 460
 461     if (!This->initialized) return WINCODEC_ERR_FRAMEMISSING;
 462
 463     if (index != 0) return E_INVALIDARG;
 464
 465     IWICBitmapDecoder_AddRef(iface);
 466     *ppIBitmapFrame = &This->IWICBitmapFrameDecode_iface;
 467
 468     return S_OK;
 469 }
 470
 471 static const IWICBitmapDecoderVtbl JpegDecoder_Vtbl = {
 472     JpegDecoder_QueryInterface,
 473     JpegDecoder_AddRef,
 474     JpegDecoder_Release,
 475     JpegDecoder_QueryCapability,
 476     JpegDecoder_Initialize,
 477     JpegDecoder_GetContainerFormat,
 478     JpegDecoder_GetDecoderInfo,
 479     JpegDecoder_CopyPalette,
 480     JpegDecoder_GetMetadataQueryReader,
 481     JpegDecoder_GetPreview,
 482     JpegDecoder_GetColorContexts,
 483     JpegDecoder_GetThumbnail,
 484     JpegDecoder_GetFrameCount,
 485     JpegDecoder_GetFrame
 486 };
 487
 488 static HRESULT WINAPI JpegDecoder_Frame_QueryInterface(IWICBitmapFrameDecode *iface, REFIID iid,
 489     void **ppv)
 490 {
 491     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 492
 493     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 494
 495     if (!ppv) return E_INVALIDARG;
 496
 497     if (IsEqualIID(&IID_IUnknown, iid) ||
 498         IsEqualIID(&IID_IWICBitmapSource, iid) ||
 499         IsEqualIID(&IID_IWICBitmapFrameDecode, iid))
 500     {
 501         *ppv = &This->IWICBitmapFrameDecode_iface;
 502     }
 503     else
 504     {
 505         *ppv = NULL;
 506         return E_NOINTERFACE;
 507     }
 508
 509     IUnknown_AddRef((IUnknown*)*ppv);
 510     return S_OK;
 511 }
 512
 513 static ULONG WINAPI JpegDecoder_Frame_AddRef(IWICBitmapFrameDecode *iface)
 514 {
 515     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 516     return IWICBitmapDecoder_AddRef(&This->IWICBitmapDecoder_iface);
 517 }
 518
 519 static ULONG WINAPI JpegDecoder_Frame_Release(IWICBitmapFrameDecode *iface)
 520 {
 521     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 522     return IWICBitmapDecoder_Release(&This->IWICBitmapDecoder_iface);
 523 }
 524
 525 static HRESULT WINAPI JpegDecoder_Frame_GetSize(IWICBitmapFrameDecode *iface,
 526     UINT *puiWidth, UINT *puiHeight)
 527 {
 528     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 529     *puiWidth = This->cinfo.output_width;
 530     *puiHeight = This->cinfo.output_height;
 531     TRACE("(%p)->(%u,%u)\n", iface, *puiWidth, *puiHeight);
 532     return S_OK;
 533 }
 534
 535 static HRESULT WINAPI JpegDecoder_Frame_GetPixelFormat(IWICBitmapFrameDecode *iface,
 536     WICPixelFormatGUID *pPixelFormat)
 537 {
 538     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 539     TRACE("(%p,%p)\n", iface, pPixelFormat);
 540     if (This->cinfo.out_color_space == JCS_RGB)
 541         memcpy(pPixelFormat, &GUID_WICPixelFormat24bppBGR, sizeof(GUID));
 542     else if (This->cinfo.out_color_space == JCS_CMYK)
 543         memcpy(pPixelFormat, &GUID_WICPixelFormat32bppCMYK, sizeof(GUID));
 544     else /* This->cinfo.out_color_space == JCS_GRAYSCALE */
 545         memcpy(pPixelFormat, &GUID_WICPixelFormat8bppGray, sizeof(GUID));
 546     return S_OK;
 547 }
 548
 549 static HRESULT WINAPI JpegDecoder_Frame_GetResolution(IWICBitmapFrameDecode *iface,
 550     double *pDpiX, double *pDpiY)
 551 {
 552     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 553
 554     EnterCriticalSection(&This->lock);
 555
 556     switch (This->cinfo.density_unit)
 557     {
 558     case 2: /* pixels per centimeter */
 559         *pDpiX = This->cinfo.X_density * 2.54;
 560         *pDpiY = This->cinfo.Y_density * 2.54;
 561         break;
 562
 563     case 1: /* pixels per inch */
 564         *pDpiX = This->cinfo.X_density;
 565         *pDpiY = This->cinfo.Y_density;
 566         break;
 567
 568     case 0: /* unknown */
 569     default:
 570         *pDpiX = 96.0;
 571         *pDpiY = 96.0;
 572         break;
 573     }
 574
 575     LeaveCriticalSection(&This->lock);
 576
 577     TRACE("(%p)->(%0.2f,%0.2f)\n", iface, *pDpiX, *pDpiY);
 578
 579     return S_OK;
 580 }
 581
 582 static HRESULT WINAPI JpegDecoder_Frame_CopyPalette(IWICBitmapFrameDecode *iface,
 583     IWICPalette *pIPalette)
 584 {
 585     FIXME("(%p,%p): stub\n", iface, pIPalette);
 586     return E_NOTIMPL;
 587 }
 588
 589 static HRESULT WINAPI JpegDecoder_Frame_CopyPixels(IWICBitmapFrameDecode *iface,
 590     const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
 591 {
 592     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 593     UINT bpp;
 594     UINT stride;
 595     UINT data_size;
 596     UINT max_row_needed;
 597     jmp_buf jmpbuf;
 598     WICRect rect;
 599     TRACE("(%p,%s,%u,%u,%p)\n", iface, debug_wic_rect(prc), cbStride, cbBufferSize, pbBuffer);
 600
 601     if (!prc)
 602     {
 603         rect.X = 0;
 604         rect.Y = 0;
 605         rect.Width = This->cinfo.output_width;
 606         rect.Height = This->cinfo.output_height;
 607         prc = &rect;
 608     }
 609     else
 610     {
 611         if (prc->X < 0 || prc->Y < 0 || prc->X+prc->Width > This->cinfo.output_width ||
 612             prc->Y+prc->Height > This->cinfo.output_height)
 613             return E_INVALIDARG;
 614     }
 615
 616     if (This->cinfo.out_color_space == JCS_GRAYSCALE) bpp = 8;
 617     else if (This->cinfo.out_color_space == JCS_CMYK) bpp = 32;
 618     else bpp = 24;
 619
 620     stride = (bpp * This->cinfo.output_width + 7) / 8;
 621     data_size = stride * This->cinfo.output_height;
 622
 623     max_row_needed = prc->Y + prc->Height;
 624     if (max_row_needed > This->cinfo.output_height) return E_INVALIDARG;
 625
 626     EnterCriticalSection(&This->lock);
 627
 628     if (!This->image_data)
 629     {
 630         This->image_data = HeapAlloc(GetProcessHeap(), 0, data_size);
 631         if (!This->image_data)
 632         {
 633             LeaveCriticalSection(&This->lock);
 634             return E_OUTOFMEMORY;
 635         }
 636     }
 637
 638     This->cinfo.client_data = jmpbuf;
 639
 640     if (setjmp(jmpbuf))
 641     {
 642         LeaveCriticalSection(&This->lock);
 643         return E_FAIL;
 644     }
 645
 646     while (max_row_needed > This->cinfo.output_scanline)
 647     {
 648         UINT first_scanline = This->cinfo.output_scanline;
 649         UINT max_rows;
 650         JSAMPROW out_rows[4];
 651         UINT i;
 652         JDIMENSION ret;
 653
 654         max_rows = min(This->cinfo.output_height-first_scanline, 4);
 655         for (i=0; i<max_rows; i++)
 656             out_rows[i] = This->image_data + stride * (first_scanline+i);
 657
 658         ret = pjpeg_read_scanlines(&This->cinfo, out_rows, max_rows);
 659
 660         if (ret == 0)
 661         {
 662             ERR("read_scanlines failed\n");
 663             LeaveCriticalSection(&This->lock);
 664             return E_FAIL;
 665         }
 666
 667         if (bpp == 24)
 668         {
 669             /* libjpeg gives us RGB data and we want BGR, so byteswap the data */
 670             reverse_bgr8(3, This->image_data + stride * first_scanline,
 671                 This->cinfo.output_width, This->cinfo.output_scanline - first_scanline,
 672                 stride);
 673         }
 674
 675         if (This->cinfo.out_color_space == JCS_CMYK && This->cinfo.saw_Adobe_marker)
 676         {
 677             DWORD *pDwordData = (DWORD*) (This->image_data + stride * first_scanline);
 678             DWORD *pDwordDataEnd = (DWORD*) (This->image_data + This->cinfo.output_scanline * stride);
 679
 680             /* Adobe JPEG's have inverted CMYK data. */
 681             while(pDwordData < pDwordDataEnd)
 682                 *pDwordData++ ^= 0xffffffff;
 683         }
 684
 685     }
 686
 687     LeaveCriticalSection(&This->lock);
 688
 689     return copy_pixels(bpp, This->image_data,
 690         This->cinfo.output_width, This->cinfo.output_height, stride,
 691         prc, cbStride, cbBufferSize, pbBuffer);
 692 }
 693
 694 static HRESULT WINAPI JpegDecoder_Frame_GetMetadataQueryReader(IWICBitmapFrameDecode *iface,
 695     IWICMetadataQueryReader **ppIMetadataQueryReader)
 696 {
 697     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 698
 699     TRACE("(%p,%p)\n", iface, ppIMetadataQueryReader);
 700
 701     if (!ppIMetadataQueryReader)
 702         return E_INVALIDARG;
 703
 704     return MetadataQueryReader_CreateInstance(&This->IWICMetadataBlockReader_iface, NULL, ppIMetadataQueryReader);
 705 }
 706
 707 static HRESULT WINAPI JpegDecoder_Frame_GetColorContexts(IWICBitmapFrameDecode *iface,
 708     UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
 709 {
 710     FIXME("(%p,%u,%p,%p): stub\n", iface, cCount, ppIColorContexts, pcActualCount);
 711     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 712 }
 713
 714 static HRESULT WINAPI JpegDecoder_Frame_GetThumbnail(IWICBitmapFrameDecode *iface,
 715     IWICBitmapSource **ppIThumbnail)
 716 {
 717     FIXME("(%p,%p): stub\n", iface, ppIThumbnail);
 718     return WINCODEC_ERR_CODECNOTHUMBNAIL;
 719 }
 720
 721 static const IWICBitmapFrameDecodeVtbl JpegDecoder_Frame_Vtbl = {
 722     JpegDecoder_Frame_QueryInterface,
 723     JpegDecoder_Frame_AddRef,
 724     JpegDecoder_Frame_Release,
 725     JpegDecoder_Frame_GetSize,
 726     JpegDecoder_Frame_GetPixelFormat,
 727     JpegDecoder_Frame_GetResolution,
 728     JpegDecoder_Frame_CopyPalette,
 729     JpegDecoder_Frame_CopyPixels,
 730     JpegDecoder_Frame_GetMetadataQueryReader,
 731     JpegDecoder_Frame_GetColorContexts,
 732     JpegDecoder_Frame_GetThumbnail
 733 };
 734
 735 static HRESULT WINAPI JpegDecoder_Block_QueryInterface(IWICMetadataBlockReader *iface, REFIID iid,
 736     void **ppv)
 737 {
 738     JpegDecoder *This = impl_from_IWICMetadataBlockReader(iface);
 739     return IWICBitmapFrameDecode_QueryInterface(&This->IWICBitmapFrameDecode_iface, iid, ppv);
 740 }
 741
 742 static ULONG WINAPI JpegDecoder_Block_AddRef(IWICMetadataBlockReader *iface)
 743 {
 744     JpegDecoder *This = impl_from_IWICMetadataBlockReader(iface);
 745     return IWICBitmapDecoder_AddRef(&This->IWICBitmapDecoder_iface);
 746 }
 747
 748 static ULONG WINAPI JpegDecoder_Block_Release(IWICMetadataBlockReader *iface)
 749 {
 750     JpegDecoder *This = impl_from_IWICMetadataBlockReader(iface);
 751     return IWICBitmapDecoder_Release(&This->IWICBitmapDecoder_iface);
 752 }
 753
 754 static HRESULT WINAPI JpegDecoder_Block_GetContainerFormat(IWICMetadataBlockReader *iface,
 755     GUID *pguidContainerFormat)
 756 {
 757     TRACE("%p,%p\n", iface, pguidContainerFormat);
 758
 759     if (!pguidContainerFormat) return E_INVALIDARG;
 760
 761     memcpy(pguidContainerFormat, &GUID_ContainerFormatJpeg, sizeof(GUID));
 762
 763     return S_OK;
 764 }
 765
 766 static HRESULT WINAPI JpegDecoder_Block_GetCount(IWICMetadataBlockReader *iface,
 767     UINT *pcCount)
 768 {
 769     FIXME("%p,%p\n", iface, pcCount);
 770
 771     if (!pcCount) return E_INVALIDARG;
 772
 773     *pcCount = 0;
 774
 775     return S_OK;
 776 }
 777
 778 static HRESULT WINAPI JpegDecoder_Block_GetReaderByIndex(IWICMetadataBlockReader *iface,
 779     UINT nIndex, IWICMetadataReader **ppIMetadataReader)
 780 {
 781     FIXME("%p,%d,%p\n", iface, nIndex, ppIMetadataReader);
 782     return E_INVALIDARG;
 783 }
 784
 785 static HRESULT WINAPI JpegDecoder_Block_GetEnumerator(IWICMetadataBlockReader *iface,
 786     IEnumUnknown **ppIEnumMetadata)
 787 {
 788     FIXME("%p,%p\n", iface, ppIEnumMetadata);
 789     return E_NOTIMPL;
 790 }
 791
 792 static const IWICMetadataBlockReaderVtbl JpegDecoder_Block_Vtbl = {
 793     JpegDecoder_Block_QueryInterface,
 794     JpegDecoder_Block_AddRef,
 795     JpegDecoder_Block_Release,
 796     JpegDecoder_Block_GetContainerFormat,
 797     JpegDecoder_Block_GetCount,
 798     JpegDecoder_Block_GetReaderByIndex,
 799     JpegDecoder_Block_GetEnumerator,
 800 };
 801
 802 HRESULT JpegDecoder_CreateInstance(REFIID iid, void** ppv)
 803 {
 804     JpegDecoder *This;
 805     HRESULT ret;
 806
 807     TRACE("(%s,%p)\n", debugstr_guid(iid), ppv);
 808
 809     if (!libjpeg_handle && !load_libjpeg())
 810     {
 811         ERR("Failed reading JPEG because unable to find %s\n", SONAME_LIBJPEG);
 812         return E_FAIL;
 813     }
 814
 815     *ppv = NULL;
 816
 817     This = HeapAlloc(GetProcessHeap(), 0, sizeof(JpegDecoder));
 818     if (!This) return E_OUTOFMEMORY;
 819
 820     This->IWICBitmapDecoder_iface.lpVtbl = &JpegDecoder_Vtbl;
 821     This->IWICBitmapFrameDecode_iface.lpVtbl = &JpegDecoder_Frame_Vtbl;
 822     This->IWICMetadataBlockReader_iface.lpVtbl = &JpegDecoder_Block_Vtbl;
 823     This->ref = 1;
 824     This->initialized = FALSE;
 825     This->cinfo_initialized = FALSE;
 826     This->stream = NULL;
 827     This->image_data = NULL;
 828     InitializeCriticalSection(&This->lock);
 829     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": JpegDecoder.lock");
 830
 831     ret = IWICBitmapDecoder_QueryInterface(&This->IWICBitmapDecoder_iface, iid, ppv);
 832     IWICBitmapDecoder_Release(&This->IWICBitmapDecoder_iface);
 833
 834     return ret;
 835 }
 836
 837 typedef struct jpeg_compress_format {
 838     const WICPixelFormatGUID *guid;
 839     int bpp;
 840     int num_components;
 841     J_COLOR_SPACE color_space;
 842     int swap_rgb;
 843 } jpeg_compress_format;
 844
 845 static const jpeg_compress_format compress_formats[] = {
 846     { &GUID_WICPixelFormat24bppBGR, 24, 3, JCS_RGB, 1 },
 847     { &GUID_WICPixelFormat32bppCMYK, 32, 4, JCS_CMYK },
 848     { &GUID_WICPixelFormat8bppGray, 8, 1, JCS_GRAYSCALE },
 849     { 0 }
 850 };
 851
 852 typedef struct JpegEncoder {
 853     IWICBitmapEncoder IWICBitmapEncoder_iface;
 854     IWICBitmapFrameEncode IWICBitmapFrameEncode_iface;
 855     LONG ref;
 856     struct jpeg_compress_struct cinfo;
 857     struct jpeg_error_mgr jerr;
 858     struct jpeg_destination_mgr dest_mgr;
 859     BOOL initialized;
 860     int frame_count;
 861     BOOL frame_initialized;
 862     BOOL started_compress;
 863     int lines_written;
 864     BOOL frame_committed;
 865     BOOL committed;
 866     UINT width, height;
 867     double xres, yres;
 868     const jpeg_compress_format *format;
 869     IStream *stream;
 870     WICColor palette[256];
 871     UINT colors;
 872     CRITICAL_SECTION lock;
 873     BYTE dest_buffer[1024];
 874 } JpegEncoder;
 875
 876 static inline JpegEncoder *impl_from_IWICBitmapEncoder(IWICBitmapEncoder *iface)
 877 {
 878     return CONTAINING_RECORD(iface, JpegEncoder, IWICBitmapEncoder_iface);
 879 }
 880
 881 static inline JpegEncoder *impl_from_IWICBitmapFrameEncode(IWICBitmapFrameEncode *iface)
 882 {
 883     return CONTAINING_RECORD(iface, JpegEncoder, IWICBitmapFrameEncode_iface);
 884 }
 885
 886 static inline JpegEncoder *encoder_from_compress(j_compress_ptr compress)
 887 {
 888     return CONTAINING_RECORD(compress, JpegEncoder, cinfo);
 889 }
 890
 891 static void dest_mgr_init_destination(j_compress_ptr cinfo)
 892 {
 893     JpegEncoder *This = encoder_from_compress(cinfo);
 894
 895     This->dest_mgr.next_output_byte = This->dest_buffer;
 896     This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
 897 }
 898
 899 static jpeg_boolean dest_mgr_empty_output_buffer(j_compress_ptr cinfo)
 900 {
 901     JpegEncoder *This = encoder_from_compress(cinfo);
 902     HRESULT hr;
 903     ULONG byteswritten;
 904
 905     hr = IStream_Write(This->stream, This->dest_buffer,
 906         sizeof(This->dest_buffer), &byteswritten);
 907
 908     if (hr != S_OK || byteswritten == 0)
 909     {
 910         ERR("Failed writing data, hr=%x\n", hr);
 911         return FALSE;
 912     }
 913
 914     This->dest_mgr.next_output_byte = This->dest_buffer;
 915     This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
 916     return TRUE;
 917 }
 918
 919 static void dest_mgr_term_destination(j_compress_ptr cinfo)
 920 {
 921     JpegEncoder *This = encoder_from_compress(cinfo);
 922     ULONG byteswritten;
 923     HRESULT hr;
 924
 925     if (This->dest_mgr.free_in_buffer != sizeof(This->dest_buffer))
 926     {
 927         hr = IStream_Write(This->stream, This->dest_buffer,
 928             sizeof(This->dest_buffer) - This->dest_mgr.free_in_buffer, &byteswritten);
 929
 930         if (hr != S_OK || byteswritten == 0)
 931             ERR("Failed writing data, hr=%x\n", hr);
 932     }
 933 }
 934
 935 static HRESULT WINAPI JpegEncoder_Frame_QueryInterface(IWICBitmapFrameEncode *iface, REFIID iid,
 936     void **ppv)
 937 {
 938     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 939     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 940
 941     if (!ppv) return E_INVALIDARG;
 942
 943     if (IsEqualIID(&IID_IUnknown, iid) ||
 944         IsEqualIID(&IID_IWICBitmapFrameEncode, iid))
 945     {
 946         *ppv = &This->IWICBitmapFrameEncode_iface;
 947     }
 948     else
 949     {
 950         *ppv = NULL;
 951         return E_NOINTERFACE;
 952     }
 953
 954     IUnknown_AddRef((IUnknown*)*ppv);
 955     return S_OK;
 956 }
 957
 958 static ULONG WINAPI JpegEncoder_Frame_AddRef(IWICBitmapFrameEncode *iface)
 959 {
 960     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 961     return IWICBitmapEncoder_AddRef(&This->IWICBitmapEncoder_iface);
 962 }
 963
 964 static ULONG WINAPI JpegEncoder_Frame_Release(IWICBitmapFrameEncode *iface)
 965 {
 966     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 967     return IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
 968 }
 969
 970 static HRESULT WINAPI JpegEncoder_Frame_Initialize(IWICBitmapFrameEncode *iface,
 971     IPropertyBag2 *pIEncoderOptions)
 972 {
 973     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 974     TRACE("(%p,%p)\n", iface, pIEncoderOptions);
 975
 976     EnterCriticalSection(&This->lock);
 977
 978     if (This->frame_initialized)
 979     {
 980         LeaveCriticalSection(&This->lock);
 981         return WINCODEC_ERR_WRONGSTATE;
 982     }
 983
 984     This->frame_initialized = TRUE;
 985
 986     LeaveCriticalSection(&This->lock);
 987
 988     return S_OK;
 989 }
 990
 991 static HRESULT WINAPI JpegEncoder_Frame_SetSize(IWICBitmapFrameEncode *iface,
 992     UINT uiWidth, UINT uiHeight)
 993 {
 994     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 995     TRACE("(%p,%u,%u)\n", iface, uiWidth, uiHeight);
 996
 997     EnterCriticalSection(&This->lock);
 998
 999     if (!This->frame_initialized || This->started_compress)
1000     {
1001         LeaveCriticalSection(&This->lock);
1002         return WINCODEC_ERR_WRONGSTATE;
1003     }
1004
1005     This->width = uiWidth;
1006     This->height = uiHeight;
1007
1008     LeaveCriticalSection(&This->lock);
1009
1010     return S_OK;
1011 }
1012
1013 static HRESULT WINAPI JpegEncoder_Frame_SetResolution(IWICBitmapFrameEncode *iface,
1014     double dpiX, double dpiY)
1015 {
1016     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
1017     TRACE("(%p,%0.2f,%0.2f)\n", iface, dpiX, dpiY);
1018
1019     EnterCriticalSection(&This->lock);
1020
1021     if (!This->frame_initialized || This->started_compress)
1022     {
1023         LeaveCriticalSection(&This->lock);
1024         return WINCODEC_ERR_WRONGSTATE;
1025     }
1026
1027     This->xres = dpiX;
1028     This->yres = dpiY;
1029
1030     LeaveCriticalSection(&This->lock);
1031
1032     return S_OK;
1033 }
1034
1035 static HRESULT WINAPI JpegEncoder_Frame_SetPixelFormat(IWICBitmapFrameEncode *iface,
1036     WICPixelFormatGUID *pPixelFormat)
1037 {
1038     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
1039     int i;
1040     TRACE("(%p,%s)\n", iface, debugstr_guid(pPixelFormat));
1041
1042     EnterCriticalSection(&This->lock);
1043
1044     if (!This->frame_initialized || This->started_compress)
1045     {
1046         LeaveCriticalSection(&This->lock);
1047         return WINCODEC_ERR_WRONGSTATE;
1048     }
1049
1050     for (i=0; compress_formats[i].guid; i++)
1051     {
1052         if (memcmp(compress_formats[i].guid, pPixelFormat, sizeof(GUID)) == 0)
1053             break;
1054     }
1055
1056     if (!compress_formats[i].guid) i = 0;
1057
1058     This->format = &compress_formats[i];
1059     memcpy(pPixelFormat, This->format->guid, sizeof(GUID));
1060
1061     LeaveCriticalSection(&This->lock);
1062
1063     return S_OK;
1064 }
1065
1066 static HRESULT WINAPI JpegEncoder_Frame_SetColorContexts(IWICBitmapFrameEncode *iface,
1067     UINT cCount, IWICColorContext **ppIColorContext)
1068 {
1069     FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
1070     return E_NOTIMPL;
1071 }
1072
1073 static HRESULT WINAPI JpegEncoder_Frame_SetPalette(IWICBitmapFrameEncode *iface,
1074     IWICPalette *palette)
1075 {
1076     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
1077     HRESULT hr;
1078
1079     TRACE("(%p,%p)\n", iface, palette);
1080
1081     if (!palette) return E_INVALIDARG;
1082
1083     EnterCriticalSection(&This->lock);
1084
1085     if (This->frame_initialized)
1086         hr = IWICPalette_GetColors(palette, 256, This->palette, &This->colors);
1087     else
1088         hr = WINCODEC_ERR_NOTINITIALIZED;
1089
1090     LeaveCriticalSection(&This->lock);
1091     return hr;
1092 }
1093
1094 static HRESULT WINAPI JpegEncoder_Frame_SetThumbnail(IWICBitmapFrameEncode *iface,
1095     IWICBitmapSource *pIThumbnail)
1096 {
1097     FIXME("(%p,%p): stub\n", iface, pIThumbnail);
1098     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1099 }
1100
1101 static HRESULT WINAPI JpegEncoder_Frame_WritePixels(IWICBitmapFrameEncode *iface,
1102     UINT lineCount, UINT cbStride, UINT cbBufferSize, BYTE *pbPixels)
1103 {
1104     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
1105     jmp_buf jmpbuf;
1106     BYTE *swapped_data = NULL, *current_row;
1107     UINT line;
1108     int row_size;
1109     TRACE("(%p,%u,%u,%u,%p)\n", iface, lineCount, cbStride, cbBufferSize, pbPixels);
1110
1111     EnterCriticalSection(&This->lock);
1112
1113     if (!This->frame_initialized || !This->width || !This->height || !This->format)
1114     {
1115         LeaveCriticalSection(&This->lock);
1116         return WINCODEC_ERR_WRONGSTATE;
1117     }
1118
1119     if (lineCount == 0 || lineCount + This->lines_written > This->height)
1120     {
1121         LeaveCriticalSection(&This->lock);
1122         return E_INVALIDARG;
1123     }
1124
1125     /* set up setjmp/longjmp error handling */
1126     if (setjmp(jmpbuf))
1127     {
1128         LeaveCriticalSection(&This->lock);
1129         HeapFree(GetProcessHeap(), 0, swapped_data);
1130         return E_FAIL;
1131     }
1132     This->cinfo.client_data = jmpbuf;
1133
1134     if (!This->started_compress)
1135     {
1136         This->cinfo.image_width = This->width;
1137         This->cinfo.image_height = This->height;
1138         This->cinfo.input_components = This->format->num_components;
1139         This->cinfo.in_color_space = This->format->color_space;
1140
1141         pjpeg_set_defaults(&This->cinfo);
1142
1143         if (This->xres != 0.0 && This->yres != 0.0)
1144         {
1145             This->cinfo.density_unit = 1; /* dots per inch */
1146             This->cinfo.X_density = This->xres;
1147             This->cinfo.Y_density = This->yres;
1148         }
1149
1150         pjpeg_start_compress(&This->cinfo, TRUE);
1151
1152         This->started_compress = TRUE;
1153     }
1154
1155     row_size = This->format->bpp / 8 * This->width;
1156
1157     if (This->format->swap_rgb)
1158     {
1159         swapped_data = HeapAlloc(GetProcessHeap(), 0, row_size);
1160         if (!swapped_data)
1161         {
1162             LeaveCriticalSection(&This->lock);
1163             return E_OUTOFMEMORY;
1164         }
1165     }
1166
1167     for (line=0; line < lineCount; line++)
1168     {
1169         if (This->format->swap_rgb)
1170         {
1171             UINT x;
1172
1173             memcpy(swapped_data, pbPixels + (cbStride * line), row_size);
1174
1175             for (x=0; x < This->width; x++)
1176             {
1177                 BYTE b;
1178
1179                 b = swapped_data[x*3];
1180                 swapped_data[x*3] = swapped_data[x*3+2];
1181                 swapped_data[x*3+2] = b;
1182             }
1183
1184             current_row = swapped_data;
1185         }
1186         else
1187             current_row = pbPixels + (cbStride * line);
1188
1189         if (!pjpeg_write_scanlines(&This->cinfo, &current_row, 1))
1190         {
1191             ERR("failed writing scanlines\n");
1192             LeaveCriticalSection(&This->lock);
1193             HeapFree(GetProcessHeap(), 0, swapped_data);
1194             return E_FAIL;
1195         }
1196
1197         This->lines_written++;
1198     }
1199
1200     LeaveCriticalSection(&This->lock);
1201     HeapFree(GetProcessHeap(), 0, swapped_data);
1202
1203     return S_OK;
1204 }
1205
1206 static HRESULT WINAPI JpegEncoder_Frame_WriteSource(IWICBitmapFrameEncode *iface,
1207     IWICBitmapSource *pIBitmapSource, WICRect *prc)
1208 {
1209     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
1210     HRESULT hr;
1211     TRACE("(%p,%p,%s)\n", iface, pIBitmapSource, debug_wic_rect(prc));
1212
1213     if (!This->frame_initialized)
1214         return WINCODEC_ERR_WRONGSTATE;
1215
1216     hr = configure_write_source(iface, pIBitmapSource, prc,
1217         This->format ? This->format->guid : NULL, This->width, This->height,
1218         This->xres, This->yres);
1219
1220     if (SUCCEEDED(hr))
1221     {
1222         hr = write_source(iface, pIBitmapSource, prc,
1223             This->format->guid, This->format->bpp, This->width, This->height);
1224     }
1225
1226     return hr;
1227 }
1228
1229 static HRESULT WINAPI JpegEncoder_Frame_Commit(IWICBitmapFrameEncode *iface)
1230 {
1231     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
1232     jmp_buf jmpbuf;
1233     TRACE("(%p)\n", iface);
1234
1235     EnterCriticalSection(&This->lock);
1236
1237     if (!This->started_compress || This->lines_written != This->height || This->frame_committed)
1238     {
1239         LeaveCriticalSection(&This->lock);
1240         return WINCODEC_ERR_WRONGSTATE;
1241     }
1242
1243     /* set up setjmp/longjmp error handling */
1244     if (setjmp(jmpbuf))
1245     {
1246         LeaveCriticalSection(&This->lock);
1247         return E_FAIL;
1248     }
1249     This->cinfo.client_data = jmpbuf;
1250
1251     pjpeg_finish_compress(&This->cinfo);
1252
1253     This->frame_committed = TRUE;
1254
1255     LeaveCriticalSection(&This->lock);
1256
1257     return S_OK;
1258 }
1259
1260 static HRESULT WINAPI JpegEncoder_Frame_GetMetadataQueryWriter(IWICBitmapFrameEncode *iface,
1261     IWICMetadataQueryWriter **ppIMetadataQueryWriter)
1262 {
1263     FIXME("(%p, %p): stub\n", iface, ppIMetadataQueryWriter);
1264     return E_NOTIMPL;
1265 }
1266
1267 static const IWICBitmapFrameEncodeVtbl JpegEncoder_FrameVtbl = {
1268     JpegEncoder_Frame_QueryInterface,
1269     JpegEncoder_Frame_AddRef,
1270     JpegEncoder_Frame_Release,
1271     JpegEncoder_Frame_Initialize,
1272     JpegEncoder_Frame_SetSize,
1273     JpegEncoder_Frame_SetResolution,
1274     JpegEncoder_Frame_SetPixelFormat,
1275     JpegEncoder_Frame_SetColorContexts,
1276     JpegEncoder_Frame_SetPalette,
1277     JpegEncoder_Frame_SetThumbnail,
1278     JpegEncoder_Frame_WritePixels,
1279     JpegEncoder_Frame_WriteSource,
1280     JpegEncoder_Frame_Commit,
1281     JpegEncoder_Frame_GetMetadataQueryWriter
1282 };
1283
1284 static HRESULT WINAPI JpegEncoder_QueryInterface(IWICBitmapEncoder *iface, REFIID iid,
1285     void **ppv)
1286 {
1287     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1288     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
1289
1290     if (!ppv) return E_INVALIDARG;
1291
1292     if (IsEqualIID(&IID_IUnknown, iid) ||
1293         IsEqualIID(&IID_IWICBitmapEncoder, iid))
1294     {
1295         *ppv = &This->IWICBitmapEncoder_iface;
1296     }
1297     else
1298     {
1299         *ppv = NULL;
1300         return E_NOINTERFACE;
1301     }
1302
1303     IUnknown_AddRef((IUnknown*)*ppv);
1304     return S_OK;
1305 }
1306
1307 static ULONG WINAPI JpegEncoder_AddRef(IWICBitmapEncoder *iface)
1308 {
1309     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1310     ULONG ref = InterlockedIncrement(&This->ref);
1311
1312     TRACE("(%p) refcount=%u\n", iface, ref);
1313
1314     return ref;
1315 }
1316
1317 static ULONG WINAPI JpegEncoder_Release(IWICBitmapEncoder *iface)
1318 {
1319     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1320     ULONG ref = InterlockedDecrement(&This->ref);
1321
1322     TRACE("(%p) refcount=%u\n", iface, ref);
1323
1324     if (ref == 0)
1325     {
1326         This->lock.DebugInfo->Spare[0] = 0;
1327         DeleteCriticalSection(&This->lock);
1328         if (This->initialized) pjpeg_destroy_compress(&This->cinfo);
1329         if (This->stream) IStream_Release(This->stream);
1330         HeapFree(GetProcessHeap(), 0, This);
1331     }
1332
1333     return ref;
1334 }
1335
1336 static HRESULT WINAPI JpegEncoder_Initialize(IWICBitmapEncoder *iface,
1337     IStream *pIStream, WICBitmapEncoderCacheOption cacheOption)
1338 {
1339     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1340     jmp_buf jmpbuf;
1341
1342     TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOption);
1343
1344     EnterCriticalSection(&This->lock);
1345
1346     if (This->initialized)
1347     {
1348         LeaveCriticalSection(&This->lock);
1349         return WINCODEC_ERR_WRONGSTATE;
1350     }
1351
1352     pjpeg_std_error(&This->jerr);
1353
1354     This->jerr.error_exit = error_exit_fn;
1355     This->jerr.emit_message = emit_message_fn;
1356
1357     This->cinfo.err = &This->jerr;
1358
1359     This->cinfo.client_data = jmpbuf;
1360
1361     if (setjmp(jmpbuf))
1362     {
1363         LeaveCriticalSection(&This->lock);
1364         return E_FAIL;
1365     }
1366
1367     pjpeg_CreateCompress(&This->cinfo, JPEG_LIB_VERSION, sizeof(struct jpeg_compress_struct));
1368
1369     This->stream = pIStream;
1370     IStream_AddRef(pIStream);
1371
1372     This->dest_mgr.next_output_byte = This->dest_buffer;
1373     This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
1374
1375     This->dest_mgr.init_destination = dest_mgr_init_destination;
1376     This->dest_mgr.empty_output_buffer = dest_mgr_empty_output_buffer;
1377     This->dest_mgr.term_destination = dest_mgr_term_destination;
1378
1379     This->cinfo.dest = &This->dest_mgr;
1380
1381     This->initialized = TRUE;
1382
1383     LeaveCriticalSection(&This->lock);
1384
1385     return S_OK;
1386 }
1387
1388 static HRESULT WINAPI JpegEncoder_GetContainerFormat(IWICBitmapEncoder *iface, GUID *format)
1389 {
1390     TRACE("(%p,%p)\n", iface, format);
1391
1392     if (!format)
1393         return E_INVALIDARG;
1394
1395     memcpy(format, &GUID_ContainerFormatJpeg, sizeof(*format));
1396     return S_OK;
1397 }
1398
1399 static HRESULT WINAPI JpegEncoder_GetEncoderInfo(IWICBitmapEncoder *iface, IWICBitmapEncoderInfo **info)
1400 {
1401     IWICComponentInfo *comp_info;
1402     HRESULT hr;
1403
1404     TRACE("%p,%p\n", iface, info);
1405
1406     if (!info) return E_INVALIDARG;
1407
1408     hr = CreateComponentInfo(&CLSID_WICJpegEncoder, &comp_info);
1409     if (hr == S_OK)
1410     {
1411         hr = IWICComponentInfo_QueryInterface(comp_info, &IID_IWICBitmapEncoderInfo, (void **)info);
1412         IWICComponentInfo_Release(comp_info);
1413     }
1414     return hr;
1415 }
1416
1417 static HRESULT WINAPI JpegEncoder_SetColorContexts(IWICBitmapEncoder *iface,
1418     UINT cCount, IWICColorContext **ppIColorContext)
1419 {
1420     FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
1421     return E_NOTIMPL;
1422 }
1423
1424 static HRESULT WINAPI JpegEncoder_SetPalette(IWICBitmapEncoder *iface, IWICPalette *pIPalette)
1425 {
1426     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1427     HRESULT hr;
1428
1429     TRACE("(%p,%p)\n", iface, pIPalette);
1430
1431     EnterCriticalSection(&This->lock);
1432
1433     hr = This->initialized ? WINCODEC_ERR_UNSUPPORTEDOPERATION : WINCODEC_ERR_NOTINITIALIZED;
1434
1435     LeaveCriticalSection(&This->lock);
1436
1437     return hr;
1438 }
1439
1440 static HRESULT WINAPI JpegEncoder_SetThumbnail(IWICBitmapEncoder *iface, IWICBitmapSource *pIThumbnail)
1441 {
1442     TRACE("(%p,%p)\n", iface, pIThumbnail);
1443     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1444 }
1445
1446 static HRESULT WINAPI JpegEncoder_SetPreview(IWICBitmapEncoder *iface, IWICBitmapSource *pIPreview)
1447 {
1448     TRACE("(%p,%p)\n", iface, pIPreview);
1449     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1450 }
1451
1452 static HRESULT WINAPI JpegEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
1453     IWICBitmapFrameEncode **ppIFrameEncode, IPropertyBag2 **ppIEncoderOptions)
1454 {
1455     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1456     HRESULT hr;
1457     static const PROPBAG2 opts[6] =
1458     {
1459         { PROPBAG2_TYPE_DATA, VT_R4,            0, 0, (LPOLESTR)wszImageQuality },
1460         { PROPBAG2_TYPE_DATA, VT_UI1,           0, 0, (LPOLESTR)wszBitmapTransform },
1461         { PROPBAG2_TYPE_DATA, VT_I4 | VT_ARRAY, 0, 0, (LPOLESTR)wszLuminance },
1462         { PROPBAG2_TYPE_DATA, VT_I4 | VT_ARRAY, 0, 0, (LPOLESTR)wszChrominance },
1463         { PROPBAG2_TYPE_DATA, VT_UI1,           0, 0, (LPOLESTR)wszJpegYCrCbSubsampling },
1464         { PROPBAG2_TYPE_DATA, VT_BOOL,          0, 0, (LPOLESTR)wszSuppressApp0 },
1465     };
1466
1467     TRACE("(%p,%p,%p)\n", iface, ppIFrameEncode, ppIEncoderOptions);
1468
1469     EnterCriticalSection(&This->lock);
1470
1471     if (This->frame_count != 0)
1472     {
1473         LeaveCriticalSection(&This->lock);
1474         return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1475     }
1476
1477     if (!This->initialized)
1478     {
1479         LeaveCriticalSection(&This->lock);
1480         return WINCODEC_ERR_NOTINITIALIZED;
1481     }
1482
1483     if (ppIEncoderOptions)
1484     {
1485         hr = CreatePropertyBag2(opts, ARRAY_SIZE(opts), ppIEncoderOptions);
1486         if (FAILED(hr))
1487         {
1488             LeaveCriticalSection(&This->lock);
1489             return hr;
1490         }
1491     }
1492
1493     This->frame_count = 1;
1494
1495     LeaveCriticalSection(&This->lock);
1496
1497     IWICBitmapEncoder_AddRef(iface);
1498     *ppIFrameEncode = &This->IWICBitmapFrameEncode_iface;
1499
1500     return S_OK;
1501 }
1502
1503 static HRESULT WINAPI JpegEncoder_Commit(IWICBitmapEncoder *iface)
1504 {
1505     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1506     TRACE("(%p)\n", iface);
1507
1508     EnterCriticalSection(&This->lock);
1509
1510     if (!This->frame_committed || This->committed)
1511     {
1512         LeaveCriticalSection(&This->lock);
1513         return WINCODEC_ERR_WRONGSTATE;
1514     }
1515
1516     This->committed = TRUE;
1517
1518     LeaveCriticalSection(&This->lock);
1519
1520     return S_OK;
1521 }
1522
1523 static HRESULT WINAPI JpegEncoder_GetMetadataQueryWriter(IWICBitmapEncoder *iface,
1524     IWICMetadataQueryWriter **ppIMetadataQueryWriter)
1525 {
1526     FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryWriter);
1527     return E_NOTIMPL;
1528 }
1529
1530 static const IWICBitmapEncoderVtbl JpegEncoder_Vtbl = {
1531     JpegEncoder_QueryInterface,
1532     JpegEncoder_AddRef,
1533     JpegEncoder_Release,
1534     JpegEncoder_Initialize,
1535     JpegEncoder_GetContainerFormat,
1536     JpegEncoder_GetEncoderInfo,
1537     JpegEncoder_SetColorContexts,
1538     JpegEncoder_SetPalette,
1539     JpegEncoder_SetThumbnail,
1540     JpegEncoder_SetPreview,
1541     JpegEncoder_CreateNewFrame,
1542     JpegEncoder_Commit,
1543     JpegEncoder_GetMetadataQueryWriter
1544 };
1545
1546 HRESULT JpegEncoder_CreateInstance(REFIID iid, void** ppv)
1547 {
1548     JpegEncoder *This;
1549     HRESULT ret;
1550
1551     TRACE("(%s,%p)\n", debugstr_guid(iid), ppv);
1552
1553     *ppv = NULL;
1554
1555     if (!libjpeg_handle && !load_libjpeg())
1556     {
1557         ERR("Failed writing JPEG because unable to find %s\n",SONAME_LIBJPEG);
1558         return E_FAIL;
1559     }
1560
1561     This = HeapAlloc(GetProcessHeap(), 0, sizeof(JpegEncoder));
1562     if (!This) return E_OUTOFMEMORY;
1563
1564     This->IWICBitmapEncoder_iface.lpVtbl = &JpegEncoder_Vtbl;
1565     This->IWICBitmapFrameEncode_iface.lpVtbl = &JpegEncoder_FrameVtbl;
1566     This->ref = 1;
1567     This->initialized = FALSE;
1568     This->frame_count = 0;
1569     This->frame_initialized = FALSE;
1570     This->started_compress = FALSE;
1571     This->lines_written = 0;
1572     This->frame_committed = FALSE;
1573     This->committed = FALSE;
1574     This->width = This->height = 0;
1575     This->xres = This->yres = 0.0;
1576     This->format = NULL;
1577     This->stream = NULL;
1578     This->colors = 0;
1579     InitializeCriticalSection(&This->lock);
1580     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": JpegEncoder.lock");
1581
1582     ret = IWICBitmapEncoder_QueryInterface(&This->IWICBitmapEncoder_iface, iid, ppv);
1583     IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
1584
1585     return ret;
1586 }
1587
1588 #else /* !defined(SONAME_LIBJPEG) */
1589
1590 HRESULT JpegDecoder_CreateInstance(REFIID iid, void** ppv)
1591 {
1592     ERR("Trying to load JPEG picture, but JPEG support is not compiled in.\n");
1593     return E_FAIL;
1594 }
1595
1596 HRESULT JpegEncoder_CreateInstance(REFIID iid, void** ppv)
1597 {
1598     ERR("Trying to save JPEG picture, but JPEG support is not compiled in.\n");
1599     return E_FAIL;
1600 }
1601
1602 #endif