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