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