git.oblomov.eu Git - wine/blob - 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 (hr != S_OK || 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     if (This->cinfo.density_unit == 2) /* pixels per centimeter */
 552     {
 553         *pDpiX = This->cinfo.X_density * 2.54;
 554         *pDpiY = This->cinfo.Y_density * 2.54;
 555     }
 556     else
 557     {
 558         /* 1 = pixels per inch, 0 = unknown */
 559         *pDpiX = This->cinfo.X_density;
 560         *pDpiY = This->cinfo.Y_density;
 561     }
 562
 563     LeaveCriticalSection(&This->lock);
 564
 565     TRACE("(%p)->(%0.2f,%0.2f)\n", iface, *pDpiX, *pDpiY);
 566
 567     return S_OK;
 568 }
 569
 570 static HRESULT WINAPI JpegDecoder_Frame_CopyPalette(IWICBitmapFrameDecode *iface,
 571     IWICPalette *pIPalette)
 572 {
 573     FIXME("(%p,%p): stub\n", iface, pIPalette);
 574     return E_NOTIMPL;
 575 }
 576
 577 static HRESULT WINAPI JpegDecoder_Frame_CopyPixels(IWICBitmapFrameDecode *iface,
 578     const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
 579 {
 580     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 581     UINT bpp;
 582     UINT stride;
 583     UINT data_size;
 584     UINT max_row_needed;
 585     jmp_buf jmpbuf;
 586     WICRect rect;
 587     TRACE("(%p,%p,%u,%u,%p)\n", iface, prc, cbStride, cbBufferSize, pbBuffer);
 588
 589     if (!prc)
 590     {
 591         rect.X = 0;
 592         rect.Y = 0;
 593         rect.Width = This->cinfo.output_width;
 594         rect.Height = This->cinfo.output_height;
 595         prc = &rect;
 596     }
 597     else
 598     {
 599         if (prc->X < 0 || prc->Y < 0 || prc->X+prc->Width > This->cinfo.output_width ||
 600             prc->Y+prc->Height > This->cinfo.output_height)
 601             return E_INVALIDARG;
 602     }
 603
 604     if (This->cinfo.out_color_space == JCS_GRAYSCALE) bpp = 8;
 605     else if (This->cinfo.out_color_space == JCS_CMYK) bpp = 32;
 606     else bpp = 24;
 607
 608     stride = bpp * This->cinfo.output_width;
 609     data_size = stride * This->cinfo.output_height;
 610
 611     max_row_needed = prc->Y + prc->Height;
 612     if (max_row_needed > This->cinfo.output_height) return E_INVALIDARG;
 613
 614     EnterCriticalSection(&This->lock);
 615
 616     if (!This->image_data)
 617     {
 618         This->image_data = HeapAlloc(GetProcessHeap(), 0, data_size);
 619         if (!This->image_data)
 620         {
 621             LeaveCriticalSection(&This->lock);
 622             return E_OUTOFMEMORY;
 623         }
 624     }
 625
 626     This->cinfo.client_data = jmpbuf;
 627
 628     if (setjmp(jmpbuf))
 629     {
 630         LeaveCriticalSection(&This->lock);
 631         return E_FAIL;
 632     }
 633
 634     while (max_row_needed > This->cinfo.output_scanline)
 635     {
 636         UINT first_scanline = This->cinfo.output_scanline;
 637         UINT max_rows;
 638         JSAMPROW out_rows[4];
 639         UINT i;
 640         JDIMENSION ret;
 641
 642         max_rows = min(This->cinfo.output_height-first_scanline, 4);
 643         for (i=0; i<max_rows; i++)
 644             out_rows[i] = This->image_data + stride * (first_scanline+i);
 645
 646         ret = pjpeg_read_scanlines(&This->cinfo, out_rows, max_rows);
 647
 648         if (ret == 0)
 649         {
 650             ERR("read_scanlines failed\n");
 651             LeaveCriticalSection(&This->lock);
 652             return E_FAIL;
 653         }
 654
 655         if (bpp == 24)
 656         {
 657             /* libjpeg gives us RGB data and we want BGR, so byteswap the data */
 658             reverse_bgr8(3, This->image_data + stride * first_scanline,
 659                 This->cinfo.output_width, This->cinfo.output_scanline - first_scanline,
 660                 stride);
 661         }
 662
 663         if (This->cinfo.out_color_space == JCS_CMYK && This->cinfo.saw_Adobe_marker)
 664             /* Adobe JPEG's have inverted CMYK data. */
 665             for (i=0; i<data_size; i++)
 666                 This->image_data[i] ^= 0xff;
 667     }
 668
 669     LeaveCriticalSection(&This->lock);
 670
 671     return copy_pixels(bpp, This->image_data,
 672         This->cinfo.output_width, This->cinfo.output_height, stride,
 673         prc, cbStride, cbBufferSize, pbBuffer);
 674 }
 675
 676 static HRESULT WINAPI JpegDecoder_Frame_GetMetadataQueryReader(IWICBitmapFrameDecode *iface,
 677     IWICMetadataQueryReader **ppIMetadataQueryReader)
 678 {
 679     FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryReader);
 680     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 681 }
 682
 683 static HRESULT WINAPI JpegDecoder_Frame_GetColorContexts(IWICBitmapFrameDecode *iface,
 684     UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
 685 {
 686     FIXME("(%p,%u,%p,%p): stub\n", iface, cCount, ppIColorContexts, pcActualCount);
 687     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 688 }
 689
 690 static HRESULT WINAPI JpegDecoder_Frame_GetThumbnail(IWICBitmapFrameDecode *iface,
 691     IWICBitmapSource **ppIThumbnail)
 692 {
 693     FIXME("(%p,%p): stub\n", iface, ppIThumbnail);
 694     return WINCODEC_ERR_CODECNOTHUMBNAIL;
 695 }
 696
 697 static const IWICBitmapFrameDecodeVtbl JpegDecoder_Frame_Vtbl = {
 698     JpegDecoder_Frame_QueryInterface,
 699     JpegDecoder_Frame_AddRef,
 700     JpegDecoder_Frame_Release,
 701     JpegDecoder_Frame_GetSize,
 702     JpegDecoder_Frame_GetPixelFormat,
 703     JpegDecoder_Frame_GetResolution,
 704     JpegDecoder_Frame_CopyPalette,
 705     JpegDecoder_Frame_CopyPixels,
 706     JpegDecoder_Frame_GetMetadataQueryReader,
 707     JpegDecoder_Frame_GetColorContexts,
 708     JpegDecoder_Frame_GetThumbnail
 709 };
 710
 711 HRESULT JpegDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
 712 {
 713     JpegDecoder *This;
 714     HRESULT ret;
 715
 716     TRACE("(%p,%s,%p)\n", pUnkOuter, debugstr_guid(iid), ppv);
 717
 718     if (!libjpeg_handle && !load_libjpeg())
 719     {
 720         ERR("Failed reading JPEG because unable to find %s\n", SONAME_LIBJPEG);
 721         return E_FAIL;
 722     }
 723
 724     *ppv = NULL;
 725
 726     if (pUnkOuter) return CLASS_E_NOAGGREGATION;
 727
 728     This = HeapAlloc(GetProcessHeap(), 0, sizeof(JpegDecoder));
 729     if (!This) return E_OUTOFMEMORY;
 730
 731     This->IWICBitmapDecoder_iface.lpVtbl = &JpegDecoder_Vtbl;
 732     This->IWICBitmapFrameDecode_iface.lpVtbl = &JpegDecoder_Frame_Vtbl;
 733     This->ref = 1;
 734     This->initialized = FALSE;
 735     This->cinfo_initialized = FALSE;
 736     This->stream = NULL;
 737     This->image_data = NULL;
 738     InitializeCriticalSection(&This->lock);
 739     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": JpegDecoder.lock");
 740
 741     ret = IWICBitmapDecoder_QueryInterface(&This->IWICBitmapDecoder_iface, iid, ppv);
 742     IWICBitmapDecoder_Release(&This->IWICBitmapDecoder_iface);
 743
 744     return ret;
 745 }
 746
 747 typedef struct jpeg_compress_format {
 748     const WICPixelFormatGUID *guid;
 749     int bpp;
 750     int num_components;
 751     J_COLOR_SPACE color_space;
 752     int swap_rgb;
 753 } jpeg_compress_format;
 754
 755 static const jpeg_compress_format compress_formats[] = {
 756     { &GUID_WICPixelFormat24bppBGR, 24, 3, JCS_RGB, 1 },
 757     { &GUID_WICPixelFormat32bppCMYK, 32, 4, JCS_CMYK },
 758     { &GUID_WICPixelFormat8bppGray, 8, 1, JCS_GRAYSCALE },
 759     { 0 }
 760 };
 761
 762 typedef struct JpegEncoder {
 763     IWICBitmapEncoder IWICBitmapEncoder_iface;
 764     IWICBitmapFrameEncode IWICBitmapFrameEncode_iface;
 765     LONG ref;
 766     struct jpeg_compress_struct cinfo;
 767     struct jpeg_error_mgr jerr;
 768     struct jpeg_destination_mgr dest_mgr;
 769     int initialized;
 770     int frame_count;
 771     int frame_initialized;
 772     int started_compress;
 773     int lines_written;
 774     int frame_committed;
 775     int committed;
 776     UINT width, height;
 777     double xres, yres;
 778     const jpeg_compress_format *format;
 779     IStream *stream;
 780     CRITICAL_SECTION lock;
 781     BYTE dest_buffer[1024];
 782 } JpegEncoder;
 783
 784 static inline JpegEncoder *impl_from_IWICBitmapEncoder(IWICBitmapEncoder *iface)
 785 {
 786     return CONTAINING_RECORD(iface, JpegEncoder, IWICBitmapEncoder_iface);
 787 }
 788
 789 static inline JpegEncoder *impl_from_IWICBitmapFrameEncode(IWICBitmapFrameEncode *iface)
 790 {
 791     return CONTAINING_RECORD(iface, JpegEncoder, IWICBitmapFrameEncode_iface);
 792 }
 793
 794 static inline JpegEncoder *encoder_from_compress(j_compress_ptr compress)
 795 {
 796     return CONTAINING_RECORD(compress, JpegEncoder, cinfo);
 797 }
 798
 799 static void dest_mgr_init_destination(j_compress_ptr cinfo)
 800 {
 801     JpegEncoder *This = encoder_from_compress(cinfo);
 802
 803     This->dest_mgr.next_output_byte = This->dest_buffer;
 804     This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
 805 }
 806
 807 static jpeg_boolean dest_mgr_empty_output_buffer(j_compress_ptr cinfo)
 808 {
 809     JpegEncoder *This = encoder_from_compress(cinfo);
 810     HRESULT hr;
 811     ULONG byteswritten;
 812
 813     hr = IStream_Write(This->stream, This->dest_buffer,
 814         sizeof(This->dest_buffer), &byteswritten);
 815
 816     if (hr != S_OK || byteswritten == 0)
 817     {
 818         ERR("Failed writing data, hr=%x\n", hr);
 819         return FALSE;
 820     }
 821
 822     This->dest_mgr.next_output_byte = This->dest_buffer;
 823     This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
 824     return TRUE;
 825 }
 826
 827 static void dest_mgr_term_destination(j_compress_ptr cinfo)
 828 {
 829     JpegEncoder *This = encoder_from_compress(cinfo);
 830     ULONG byteswritten;
 831     HRESULT hr;
 832
 833     if (This->dest_mgr.free_in_buffer != sizeof(This->dest_buffer))
 834     {
 835         hr = IStream_Write(This->stream, This->dest_buffer,
 836             sizeof(This->dest_buffer) - This->dest_mgr.free_in_buffer, &byteswritten);
 837
 838         if (hr != S_OK || byteswritten == 0)
 839             ERR("Failed writing data, hr=%x\n", hr);
 840     }
 841 }
 842
 843 static HRESULT WINAPI JpegEncoder_Frame_QueryInterface(IWICBitmapFrameEncode *iface, REFIID iid,
 844     void **ppv)
 845 {
 846     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 847     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 848
 849     if (!ppv) return E_INVALIDARG;
 850
 851     if (IsEqualIID(&IID_IUnknown, iid) ||
 852         IsEqualIID(&IID_IWICBitmapFrameEncode, iid))
 853     {
 854         *ppv = &This->IWICBitmapFrameEncode_iface;
 855     }
 856     else
 857     {
 858         *ppv = NULL;
 859         return E_NOINTERFACE;
 860     }
 861
 862     IUnknown_AddRef((IUnknown*)*ppv);
 863     return S_OK;
 864 }
 865
 866 static ULONG WINAPI JpegEncoder_Frame_AddRef(IWICBitmapFrameEncode *iface)
 867 {
 868     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 869     return IWICBitmapEncoder_AddRef(&This->IWICBitmapEncoder_iface);
 870 }
 871
 872 static ULONG WINAPI JpegEncoder_Frame_Release(IWICBitmapFrameEncode *iface)
 873 {
 874     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 875     return IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
 876 }
 877
 878 static HRESULT WINAPI JpegEncoder_Frame_Initialize(IWICBitmapFrameEncode *iface,
 879     IPropertyBag2 *pIEncoderOptions)
 880 {
 881     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 882     TRACE("(%p,%p)\n", iface, pIEncoderOptions);
 883
 884     EnterCriticalSection(&This->lock);
 885
 886     if (This->frame_initialized)
 887     {
 888         LeaveCriticalSection(&This->lock);
 889         return WINCODEC_ERR_WRONGSTATE;
 890     }
 891
 892     This->frame_initialized = TRUE;
 893
 894     LeaveCriticalSection(&This->lock);
 895
 896     return S_OK;
 897 }
 898
 899 static HRESULT WINAPI JpegEncoder_Frame_SetSize(IWICBitmapFrameEncode *iface,
 900     UINT uiWidth, UINT uiHeight)
 901 {
 902     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 903     TRACE("(%p,%u,%u)\n", iface, uiWidth, uiHeight);
 904
 905     EnterCriticalSection(&This->lock);
 906
 907     if (!This->frame_initialized || This->started_compress)
 908     {
 909         LeaveCriticalSection(&This->lock);
 910         return WINCODEC_ERR_WRONGSTATE;
 911     }
 912
 913     This->width = uiWidth;
 914     This->height = uiHeight;
 915
 916     LeaveCriticalSection(&This->lock);
 917
 918     return S_OK;
 919 }
 920
 921 static HRESULT WINAPI JpegEncoder_Frame_SetResolution(IWICBitmapFrameEncode *iface,
 922     double dpiX, double dpiY)
 923 {
 924     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 925     TRACE("(%p,%0.2f,%0.2f)\n", iface, dpiX, dpiY);
 926
 927     EnterCriticalSection(&This->lock);
 928
 929     if (!This->frame_initialized || This->started_compress)
 930     {
 931         LeaveCriticalSection(&This->lock);
 932         return WINCODEC_ERR_WRONGSTATE;
 933     }
 934
 935     This->xres = dpiX;
 936     This->yres = dpiY;
 937
 938     LeaveCriticalSection(&This->lock);
 939
 940     return S_OK;
 941 }
 942
 943 static HRESULT WINAPI JpegEncoder_Frame_SetPixelFormat(IWICBitmapFrameEncode *iface,
 944     WICPixelFormatGUID *pPixelFormat)
 945 {
 946     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 947     int i;
 948     TRACE("(%p,%s)\n", iface, debugstr_guid(pPixelFormat));
 949
 950     EnterCriticalSection(&This->lock);
 951
 952     if (!This->frame_initialized || This->started_compress)
 953     {
 954         LeaveCriticalSection(&This->lock);
 955         return WINCODEC_ERR_WRONGSTATE;
 956     }
 957
 958     for (i=0; compress_formats[i].guid; i++)
 959     {
 960         if (memcmp(compress_formats[i].guid, pPixelFormat, sizeof(GUID)) == 0)
 961             break;
 962     }
 963
 964     if (!compress_formats[i].guid) i = 0;
 965
 966     This->format = &compress_formats[i];
 967     memcpy(pPixelFormat, This->format->guid, sizeof(GUID));
 968
 969     LeaveCriticalSection(&This->lock);
 970
 971     return S_OK;
 972 }
 973
 974 static HRESULT WINAPI JpegEncoder_Frame_SetColorContexts(IWICBitmapFrameEncode *iface,
 975     UINT cCount, IWICColorContext **ppIColorContext)
 976 {
 977     FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
 978     return E_NOTIMPL;
 979 }
 980
 981 static HRESULT WINAPI JpegEncoder_Frame_SetPalette(IWICBitmapFrameEncode *iface,
 982     IWICPalette *pIPalette)
 983 {
 984     FIXME("(%p,%p): stub\n", iface, pIPalette);
 985     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 986 }
 987
 988 static HRESULT WINAPI JpegEncoder_Frame_SetThumbnail(IWICBitmapFrameEncode *iface,
 989     IWICBitmapSource *pIThumbnail)
 990 {
 991     FIXME("(%p,%p): stub\n", iface, pIThumbnail);
 992     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 993 }
 994
 995 static HRESULT WINAPI JpegEncoder_Frame_WritePixels(IWICBitmapFrameEncode *iface,
 996     UINT lineCount, UINT cbStride, UINT cbBufferSize, BYTE *pbPixels)
 997 {
 998     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 999     jmp_buf jmpbuf;
1000     BYTE *swapped_data = NULL, *current_row;
1001     UINT line;
1002     int row_size;
1003     TRACE("(%p,%u,%u,%u,%p)\n", iface, lineCount, cbStride, cbBufferSize, pbPixels);
1004
1005     EnterCriticalSection(&This->lock);
1006
1007     if (!This->frame_initialized || !This->width || !This->height || !This->format)
1008     {
1009         LeaveCriticalSection(&This->lock);
1010         return WINCODEC_ERR_WRONGSTATE;
1011     }
1012
1013     if (lineCount == 0 || lineCount + This->lines_written > This->height)
1014     {
1015         LeaveCriticalSection(&This->lock);
1016         return E_INVALIDARG;
1017     }
1018
1019     /* set up setjmp/longjmp error handling */
1020     if (setjmp(jmpbuf))
1021     {
1022         LeaveCriticalSection(&This->lock);
1023         HeapFree(GetProcessHeap(), 0, swapped_data);
1024         return E_FAIL;
1025     }
1026     This->cinfo.client_data = jmpbuf;
1027
1028     if (!This->started_compress)
1029     {
1030         This->cinfo.image_width = This->width;
1031         This->cinfo.image_height = This->height;
1032         This->cinfo.input_components = This->format->num_components;
1033         This->cinfo.in_color_space = This->format->color_space;
1034
1035         pjpeg_set_defaults(&This->cinfo);
1036
1037         if (This->xres != 0.0 && This->yres != 0.0)
1038         {
1039             This->cinfo.density_unit = 1; /* dots per inch */
1040             This->cinfo.X_density = This->xres;
1041             This->cinfo.Y_density = This->yres;
1042         }
1043
1044         pjpeg_start_compress(&This->cinfo, TRUE);
1045
1046         This->started_compress = 1;
1047     }
1048
1049     row_size = This->format->bpp / 8 * This->width;
1050
1051     if (This->format->swap_rgb)
1052     {
1053         swapped_data = HeapAlloc(GetProcessHeap(), 0, row_size);
1054         if (!swapped_data)
1055         {
1056             LeaveCriticalSection(&This->lock);
1057             return E_OUTOFMEMORY;
1058         }
1059     }
1060
1061     for (line=0; line < lineCount; line++)
1062     {
1063         if (This->format->swap_rgb)
1064         {
1065             UINT x;
1066
1067             memcpy(swapped_data, pbPixels + (cbStride * line), row_size);
1068
1069             for (x=0; x < This->width; x++)
1070             {
1071                 BYTE b;
1072
1073                 b = swapped_data[x*3];
1074                 swapped_data[x*3] = swapped_data[x*3+2];
1075                 swapped_data[x*3+2] = b;
1076             }
1077
1078             current_row = swapped_data;
1079         }
1080         else
1081             current_row = pbPixels + (cbStride * line);
1082
1083         if (!pjpeg_write_scanlines(&This->cinfo, &current_row, 1))
1084         {
1085             ERR("failed writing scanlines\n");
1086             LeaveCriticalSection(&This->lock);
1087             HeapFree(GetProcessHeap(), 0, swapped_data);
1088             return E_FAIL;
1089         }
1090
1091         This->lines_written++;
1092     }
1093
1094     LeaveCriticalSection(&This->lock);
1095     HeapFree(GetProcessHeap(), 0, swapped_data);
1096
1097     return S_OK;
1098 }
1099
1100 static HRESULT WINAPI JpegEncoder_Frame_WriteSource(IWICBitmapFrameEncode *iface,
1101     IWICBitmapSource *pIBitmapSource, WICRect *prc)
1102 {
1103     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
1104     HRESULT hr;
1105     WICRect rc;
1106     WICPixelFormatGUID guid;
1107     UINT stride;
1108     BYTE *pixeldata;
1109     TRACE("(%p,%p,%p)\n", iface, pIBitmapSource, prc);
1110
1111     if (!This->frame_initialized || !This->width || !This->height)
1112         return WINCODEC_ERR_WRONGSTATE;
1113
1114     if (!This->format)
1115     {
1116         hr = IWICBitmapSource_GetPixelFormat(pIBitmapSource, &guid);
1117         if (FAILED(hr)) return hr;
1118         hr = IWICBitmapFrameEncode_SetPixelFormat(iface, &guid);
1119         if (FAILED(hr)) return hr;
1120     }
1121
1122     hr = IWICBitmapSource_GetPixelFormat(pIBitmapSource, &guid);
1123     if (FAILED(hr)) return hr;
1124     if (memcmp(&guid, This->format->guid, sizeof(GUID)) != 0)
1125     {
1126         /* FIXME: should use WICConvertBitmapSource to convert */
1127         ERR("format %s unsupported\n", debugstr_guid(&guid));
1128         return E_FAIL;
1129     }
1130
1131     if (This->xres == 0.0 || This->yres == 0.0)
1132     {
1133         double xres, yres;
1134         hr = IWICBitmapSource_GetResolution(pIBitmapSource, &xres, &yres);
1135         if (FAILED(hr)) return hr;
1136         hr = IWICBitmapFrameEncode_SetResolution(iface, xres, yres);
1137         if (FAILED(hr)) return hr;
1138     }
1139
1140     if (!prc)
1141     {
1142         UINT width, height;
1143         hr = IWICBitmapSource_GetSize(pIBitmapSource, &width, &height);
1144         if (FAILED(hr)) return hr;
1145         rc.X = 0;
1146         rc.Y = 0;
1147         rc.Width = width;
1148         rc.Height = height;
1149         prc = &rc;
1150     }
1151
1152     if (prc->Width != This->width) return E_INVALIDARG;
1153
1154     stride = (This->format->bpp * This->width + 7)/8;
1155
1156     pixeldata = HeapAlloc(GetProcessHeap(), 0, stride * prc->Height);
1157     if (!pixeldata) return E_OUTOFMEMORY;
1158
1159     hr = IWICBitmapSource_CopyPixels(pIBitmapSource, prc, stride,
1160         stride*prc->Height, pixeldata);
1161
1162     if (SUCCEEDED(hr))
1163     {
1164         hr = IWICBitmapFrameEncode_WritePixels(iface, prc->Height, stride,
1165             stride*prc->Height, pixeldata);
1166     }
1167
1168     HeapFree(GetProcessHeap(), 0, pixeldata);
1169
1170     return hr;
1171 }
1172
1173 static HRESULT WINAPI JpegEncoder_Frame_Commit(IWICBitmapFrameEncode *iface)
1174 {
1175     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
1176     jmp_buf jmpbuf;
1177     TRACE("(%p)\n", iface);
1178
1179     EnterCriticalSection(&This->lock);
1180
1181     if (!This->started_compress || This->lines_written != This->height || This->frame_committed)
1182     {
1183         LeaveCriticalSection(&This->lock);
1184         return WINCODEC_ERR_WRONGSTATE;
1185     }
1186
1187     /* set up setjmp/longjmp error handling */
1188     if (setjmp(jmpbuf))
1189     {
1190         LeaveCriticalSection(&This->lock);
1191         return E_FAIL;
1192     }
1193     This->cinfo.client_data = jmpbuf;
1194
1195     pjpeg_finish_compress(&This->cinfo);
1196
1197     This->frame_committed = TRUE;
1198
1199     LeaveCriticalSection(&This->lock);
1200
1201     return S_OK;
1202 }
1203
1204 static HRESULT WINAPI JpegEncoder_Frame_GetMetadataQueryWriter(IWICBitmapFrameEncode *iface,
1205     IWICMetadataQueryWriter **ppIMetadataQueryWriter)
1206 {
1207     FIXME("(%p, %p): stub\n", iface, ppIMetadataQueryWriter);
1208     return E_NOTIMPL;
1209 }
1210
1211 static const IWICBitmapFrameEncodeVtbl JpegEncoder_FrameVtbl = {
1212     JpegEncoder_Frame_QueryInterface,
1213     JpegEncoder_Frame_AddRef,
1214     JpegEncoder_Frame_Release,
1215     JpegEncoder_Frame_Initialize,
1216     JpegEncoder_Frame_SetSize,
1217     JpegEncoder_Frame_SetResolution,
1218     JpegEncoder_Frame_SetPixelFormat,
1219     JpegEncoder_Frame_SetColorContexts,
1220     JpegEncoder_Frame_SetPalette,
1221     JpegEncoder_Frame_SetThumbnail,
1222     JpegEncoder_Frame_WritePixels,
1223     JpegEncoder_Frame_WriteSource,
1224     JpegEncoder_Frame_Commit,
1225     JpegEncoder_Frame_GetMetadataQueryWriter
1226 };
1227
1228 static HRESULT WINAPI JpegEncoder_QueryInterface(IWICBitmapEncoder *iface, REFIID iid,
1229     void **ppv)
1230 {
1231     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1232     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
1233
1234     if (!ppv) return E_INVALIDARG;
1235
1236     if (IsEqualIID(&IID_IUnknown, iid) ||
1237         IsEqualIID(&IID_IWICBitmapEncoder, iid))
1238     {
1239         *ppv = &This->IWICBitmapEncoder_iface;
1240     }
1241     else
1242     {
1243         *ppv = NULL;
1244         return E_NOINTERFACE;
1245     }
1246
1247     IUnknown_AddRef((IUnknown*)*ppv);
1248     return S_OK;
1249 }
1250
1251 static ULONG WINAPI JpegEncoder_AddRef(IWICBitmapEncoder *iface)
1252 {
1253     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1254     ULONG ref = InterlockedIncrement(&This->ref);
1255
1256     TRACE("(%p) refcount=%u\n", iface, ref);
1257
1258     return ref;
1259 }
1260
1261 static ULONG WINAPI JpegEncoder_Release(IWICBitmapEncoder *iface)
1262 {
1263     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1264     ULONG ref = InterlockedDecrement(&This->ref);
1265
1266     TRACE("(%p) refcount=%u\n", iface, ref);
1267
1268     if (ref == 0)
1269     {
1270         This->lock.DebugInfo->Spare[0] = 0;
1271         DeleteCriticalSection(&This->lock);
1272         if (This->initialized) pjpeg_destroy_compress(&This->cinfo);
1273         if (This->stream) IStream_Release(This->stream);
1274         HeapFree(GetProcessHeap(), 0, This);
1275     }
1276
1277     return ref;
1278 }
1279
1280 static HRESULT WINAPI JpegEncoder_Initialize(IWICBitmapEncoder *iface,
1281     IStream *pIStream, WICBitmapEncoderCacheOption cacheOption)
1282 {
1283     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1284     jmp_buf jmpbuf;
1285
1286     TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOption);
1287
1288     EnterCriticalSection(&This->lock);
1289
1290     if (This->initialized)
1291     {
1292         LeaveCriticalSection(&This->lock);
1293         return WINCODEC_ERR_WRONGSTATE;
1294     }
1295
1296     pjpeg_std_error(&This->jerr);
1297
1298     This->jerr.error_exit = error_exit_fn;
1299     This->jerr.emit_message = emit_message_fn;
1300
1301     This->cinfo.err = &This->jerr;
1302
1303     This->cinfo.client_data = jmpbuf;
1304
1305     if (setjmp(jmpbuf))
1306     {
1307         LeaveCriticalSection(&This->lock);
1308         return E_FAIL;
1309     }
1310
1311     pjpeg_CreateCompress(&This->cinfo, JPEG_LIB_VERSION, sizeof(struct jpeg_compress_struct));
1312
1313     This->stream = pIStream;
1314     IStream_AddRef(pIStream);
1315
1316     This->dest_mgr.next_output_byte = This->dest_buffer;
1317     This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
1318
1319     This->dest_mgr.init_destination = dest_mgr_init_destination;
1320     This->dest_mgr.empty_output_buffer = dest_mgr_empty_output_buffer;
1321     This->dest_mgr.term_destination = dest_mgr_term_destination;
1322
1323     This->cinfo.dest = &This->dest_mgr;
1324
1325     This->initialized = TRUE;
1326
1327     LeaveCriticalSection(&This->lock);
1328
1329     return S_OK;
1330 }
1331
1332 static HRESULT WINAPI JpegEncoder_GetContainerFormat(IWICBitmapEncoder *iface,
1333     GUID *pguidContainerFormat)
1334 {
1335     FIXME("(%p,%s): stub\n", iface, debugstr_guid(pguidContainerFormat));
1336     return E_NOTIMPL;
1337 }
1338
1339 static HRESULT WINAPI JpegEncoder_GetEncoderInfo(IWICBitmapEncoder *iface,
1340     IWICBitmapEncoderInfo **ppIEncoderInfo)
1341 {
1342     FIXME("(%p,%p): stub\n", iface, ppIEncoderInfo);
1343     return E_NOTIMPL;
1344 }
1345
1346 static HRESULT WINAPI JpegEncoder_SetColorContexts(IWICBitmapEncoder *iface,
1347     UINT cCount, IWICColorContext **ppIColorContext)
1348 {
1349     FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
1350     return E_NOTIMPL;
1351 }
1352
1353 static HRESULT WINAPI JpegEncoder_SetPalette(IWICBitmapEncoder *iface, IWICPalette *pIPalette)
1354 {
1355     TRACE("(%p,%p)\n", iface, pIPalette);
1356     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1357 }
1358
1359 static HRESULT WINAPI JpegEncoder_SetThumbnail(IWICBitmapEncoder *iface, IWICBitmapSource *pIThumbnail)
1360 {
1361     TRACE("(%p,%p)\n", iface, pIThumbnail);
1362     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1363 }
1364
1365 static HRESULT WINAPI JpegEncoder_SetPreview(IWICBitmapEncoder *iface, IWICBitmapSource *pIPreview)
1366 {
1367     TRACE("(%p,%p)\n", iface, pIPreview);
1368     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1369 }
1370
1371 static HRESULT WINAPI JpegEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
1372     IWICBitmapFrameEncode **ppIFrameEncode, IPropertyBag2 **ppIEncoderOptions)
1373 {
1374     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1375     HRESULT hr;
1376
1377     TRACE("(%p,%p,%p)\n", iface, ppIFrameEncode, ppIEncoderOptions);
1378
1379     EnterCriticalSection(&This->lock);
1380
1381     if (This->frame_count != 0)
1382     {
1383         LeaveCriticalSection(&This->lock);
1384         return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1385     }
1386
1387     if (!This->initialized)
1388     {
1389         LeaveCriticalSection(&This->lock);
1390         return WINCODEC_ERR_NOTINITIALIZED;
1391     }
1392
1393     hr = CreatePropertyBag2(NULL, 0, ppIEncoderOptions);
1394     if (FAILED(hr))
1395     {
1396         LeaveCriticalSection(&This->lock);
1397         return hr;
1398     }
1399
1400     This->frame_count = 1;
1401
1402     LeaveCriticalSection(&This->lock);
1403
1404     IWICBitmapEncoder_AddRef(iface);
1405     *ppIFrameEncode = &This->IWICBitmapFrameEncode_iface;
1406
1407     return S_OK;
1408 }
1409
1410 static HRESULT WINAPI JpegEncoder_Commit(IWICBitmapEncoder *iface)
1411 {
1412     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1413     TRACE("(%p)\n", iface);
1414
1415     EnterCriticalSection(&This->lock);
1416
1417     if (!This->frame_committed || This->committed)
1418     {
1419         LeaveCriticalSection(&This->lock);
1420         return WINCODEC_ERR_WRONGSTATE;
1421     }
1422
1423     This->committed = TRUE;
1424
1425     LeaveCriticalSection(&This->lock);
1426
1427     return S_OK;
1428 }
1429
1430 static HRESULT WINAPI JpegEncoder_GetMetadataQueryWriter(IWICBitmapEncoder *iface,
1431     IWICMetadataQueryWriter **ppIMetadataQueryWriter)
1432 {
1433     FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryWriter);
1434     return E_NOTIMPL;
1435 }
1436
1437 static const IWICBitmapEncoderVtbl JpegEncoder_Vtbl = {
1438     JpegEncoder_QueryInterface,
1439     JpegEncoder_AddRef,
1440     JpegEncoder_Release,
1441     JpegEncoder_Initialize,
1442     JpegEncoder_GetContainerFormat,
1443     JpegEncoder_GetEncoderInfo,
1444     JpegEncoder_SetColorContexts,
1445     JpegEncoder_SetPalette,
1446     JpegEncoder_SetThumbnail,
1447     JpegEncoder_SetPreview,
1448     JpegEncoder_CreateNewFrame,
1449     JpegEncoder_Commit,
1450     JpegEncoder_GetMetadataQueryWriter
1451 };
1452
1453 HRESULT JpegEncoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
1454 {
1455     JpegEncoder *This;
1456     HRESULT ret;
1457
1458     TRACE("(%p,%s,%p)\n", pUnkOuter, debugstr_guid(iid), ppv);
1459
1460     *ppv = NULL;
1461
1462     if (pUnkOuter) return CLASS_E_NOAGGREGATION;
1463
1464     if (!libjpeg_handle && !load_libjpeg())
1465     {
1466         ERR("Failed writing JPEG because unable to find %s\n",SONAME_LIBJPEG);
1467         return E_FAIL;
1468     }
1469
1470     This = HeapAlloc(GetProcessHeap(), 0, sizeof(JpegEncoder));
1471     if (!This) return E_OUTOFMEMORY;
1472
1473     This->IWICBitmapEncoder_iface.lpVtbl = &JpegEncoder_Vtbl;
1474     This->IWICBitmapFrameEncode_iface.lpVtbl = &JpegEncoder_FrameVtbl;
1475     This->ref = 1;
1476     This->initialized = 0;
1477     This->frame_count = 0;
1478     This->frame_initialized = 0;
1479     This->started_compress = 0;
1480     This->lines_written = 0;
1481     This->frame_committed = 0;
1482     This->committed = 0;
1483     This->width = This->height = 0;
1484     This->xres = This->yres = 0.0;
1485     This->format = NULL;
1486     This->stream = NULL;
1487     InitializeCriticalSection(&This->lock);
1488     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": JpegEncoder.lock");
1489
1490     ret = IWICBitmapEncoder_QueryInterface(&This->IWICBitmapEncoder_iface, iid, ppv);
1491     IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
1492
1493     return ret;
1494 }
1495
1496 #else /* !defined(SONAME_LIBJPEG) */
1497
1498 HRESULT JpegDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
1499 {
1500     ERR("Trying to load JPEG picture, but JPEG support is not compiled in.\n");
1501     return E_FAIL;
1502 }
1503
1504 HRESULT JpegEncoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
1505 {
1506     ERR("Trying to save JPEG picture, but JPEG support is not compiled in.\n");
1507     return E_FAIL;
1508 }
1509
1510 #endif