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     switch (This->cinfo.density_unit)
 552     {
 553     case 2: /* pixels per centimeter */
 554         *pDpiX = This->cinfo.X_density * 2.54;
 555         *pDpiY = This->cinfo.Y_density * 2.54;
 556         break;
 557
 558     case 1: /* pixels per inch */
 559         *pDpiX = This->cinfo.X_density;
 560         *pDpiY = This->cinfo.Y_density;
 561         break;
 562
 563     case 0: /* unknown */
 564     default:
 565         *pDpiX = 96.0;
 566         *pDpiY = 96.0;
 567         break;
 568     }
 569
 570     LeaveCriticalSection(&This->lock);
 571
 572     TRACE("(%p)->(%0.2f,%0.2f)\n", iface, *pDpiX, *pDpiY);
 573
 574     return S_OK;
 575 }
 576
 577 static HRESULT WINAPI JpegDecoder_Frame_CopyPalette(IWICBitmapFrameDecode *iface,
 578     IWICPalette *pIPalette)
 579 {
 580     FIXME("(%p,%p): stub\n", iface, pIPalette);
 581     return E_NOTIMPL;
 582 }
 583
 584 static HRESULT WINAPI JpegDecoder_Frame_CopyPixels(IWICBitmapFrameDecode *iface,
 585     const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
 586 {
 587     JpegDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
 588     UINT bpp;
 589     UINT stride;
 590     UINT data_size;
 591     UINT max_row_needed;
 592     jmp_buf jmpbuf;
 593     WICRect rect;
 594     TRACE("(%p,%p,%u,%u,%p)\n", iface, prc, cbStride, cbBufferSize, pbBuffer);
 595
 596     if (!prc)
 597     {
 598         rect.X = 0;
 599         rect.Y = 0;
 600         rect.Width = This->cinfo.output_width;
 601         rect.Height = This->cinfo.output_height;
 602         prc = &rect;
 603     }
 604     else
 605     {
 606         if (prc->X < 0 || prc->Y < 0 || prc->X+prc->Width > This->cinfo.output_width ||
 607             prc->Y+prc->Height > This->cinfo.output_height)
 608             return E_INVALIDARG;
 609     }
 610
 611     if (This->cinfo.out_color_space == JCS_GRAYSCALE) bpp = 8;
 612     else if (This->cinfo.out_color_space == JCS_CMYK) bpp = 32;
 613     else bpp = 24;
 614
 615     stride = bpp * This->cinfo.output_width;
 616     data_size = stride * This->cinfo.output_height;
 617
 618     max_row_needed = prc->Y + prc->Height;
 619     if (max_row_needed > This->cinfo.output_height) return E_INVALIDARG;
 620
 621     EnterCriticalSection(&This->lock);
 622
 623     if (!This->image_data)
 624     {
 625         This->image_data = HeapAlloc(GetProcessHeap(), 0, data_size);
 626         if (!This->image_data)
 627         {
 628             LeaveCriticalSection(&This->lock);
 629             return E_OUTOFMEMORY;
 630         }
 631     }
 632
 633     This->cinfo.client_data = jmpbuf;
 634
 635     if (setjmp(jmpbuf))
 636     {
 637         LeaveCriticalSection(&This->lock);
 638         return E_FAIL;
 639     }
 640
 641     while (max_row_needed > This->cinfo.output_scanline)
 642     {
 643         UINT first_scanline = This->cinfo.output_scanline;
 644         UINT max_rows;
 645         JSAMPROW out_rows[4];
 646         UINT i;
 647         JDIMENSION ret;
 648
 649         max_rows = min(This->cinfo.output_height-first_scanline, 4);
 650         for (i=0; i<max_rows; i++)
 651             out_rows[i] = This->image_data + stride * (first_scanline+i);
 652
 653         ret = pjpeg_read_scanlines(&This->cinfo, out_rows, max_rows);
 654
 655         if (ret == 0)
 656         {
 657             ERR("read_scanlines failed\n");
 658             LeaveCriticalSection(&This->lock);
 659             return E_FAIL;
 660         }
 661
 662         if (bpp == 24)
 663         {
 664             /* libjpeg gives us RGB data and we want BGR, so byteswap the data */
 665             reverse_bgr8(3, This->image_data + stride * first_scanline,
 666                 This->cinfo.output_width, This->cinfo.output_scanline - first_scanline,
 667                 stride);
 668         }
 669
 670         if (This->cinfo.out_color_space == JCS_CMYK && This->cinfo.saw_Adobe_marker)
 671             /* Adobe JPEG's have inverted CMYK data. */
 672             for (i=0; i<data_size; i++)
 673                 This->image_data[i] ^= 0xff;
 674     }
 675
 676     LeaveCriticalSection(&This->lock);
 677
 678     return copy_pixels(bpp, This->image_data,
 679         This->cinfo.output_width, This->cinfo.output_height, stride,
 680         prc, cbStride, cbBufferSize, pbBuffer);
 681 }
 682
 683 static HRESULT WINAPI JpegDecoder_Frame_GetMetadataQueryReader(IWICBitmapFrameDecode *iface,
 684     IWICMetadataQueryReader **ppIMetadataQueryReader)
 685 {
 686     FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryReader);
 687     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 688 }
 689
 690 static HRESULT WINAPI JpegDecoder_Frame_GetColorContexts(IWICBitmapFrameDecode *iface,
 691     UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
 692 {
 693     FIXME("(%p,%u,%p,%p): stub\n", iface, cCount, ppIColorContexts, pcActualCount);
 694     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 695 }
 696
 697 static HRESULT WINAPI JpegDecoder_Frame_GetThumbnail(IWICBitmapFrameDecode *iface,
 698     IWICBitmapSource **ppIThumbnail)
 699 {
 700     FIXME("(%p,%p): stub\n", iface, ppIThumbnail);
 701     return WINCODEC_ERR_CODECNOTHUMBNAIL;
 702 }
 703
 704 static const IWICBitmapFrameDecodeVtbl JpegDecoder_Frame_Vtbl = {
 705     JpegDecoder_Frame_QueryInterface,
 706     JpegDecoder_Frame_AddRef,
 707     JpegDecoder_Frame_Release,
 708     JpegDecoder_Frame_GetSize,
 709     JpegDecoder_Frame_GetPixelFormat,
 710     JpegDecoder_Frame_GetResolution,
 711     JpegDecoder_Frame_CopyPalette,
 712     JpegDecoder_Frame_CopyPixels,
 713     JpegDecoder_Frame_GetMetadataQueryReader,
 714     JpegDecoder_Frame_GetColorContexts,
 715     JpegDecoder_Frame_GetThumbnail
 716 };
 717
 718 HRESULT JpegDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
 719 {
 720     JpegDecoder *This;
 721     HRESULT ret;
 722
 723     TRACE("(%p,%s,%p)\n", pUnkOuter, debugstr_guid(iid), ppv);
 724
 725     if (!libjpeg_handle && !load_libjpeg())
 726     {
 727         ERR("Failed reading JPEG because unable to find %s\n", SONAME_LIBJPEG);
 728         return E_FAIL;
 729     }
 730
 731     *ppv = NULL;
 732
 733     if (pUnkOuter) return CLASS_E_NOAGGREGATION;
 734
 735     This = HeapAlloc(GetProcessHeap(), 0, sizeof(JpegDecoder));
 736     if (!This) return E_OUTOFMEMORY;
 737
 738     This->IWICBitmapDecoder_iface.lpVtbl = &JpegDecoder_Vtbl;
 739     This->IWICBitmapFrameDecode_iface.lpVtbl = &JpegDecoder_Frame_Vtbl;
 740     This->ref = 1;
 741     This->initialized = FALSE;
 742     This->cinfo_initialized = FALSE;
 743     This->stream = NULL;
 744     This->image_data = NULL;
 745     InitializeCriticalSection(&This->lock);
 746     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": JpegDecoder.lock");
 747
 748     ret = IWICBitmapDecoder_QueryInterface(&This->IWICBitmapDecoder_iface, iid, ppv);
 749     IWICBitmapDecoder_Release(&This->IWICBitmapDecoder_iface);
 750
 751     return ret;
 752 }
 753
 754 typedef struct jpeg_compress_format {
 755     const WICPixelFormatGUID *guid;
 756     int bpp;
 757     int num_components;
 758     J_COLOR_SPACE color_space;
 759     int swap_rgb;
 760 } jpeg_compress_format;
 761
 762 static const jpeg_compress_format compress_formats[] = {
 763     { &GUID_WICPixelFormat24bppBGR, 24, 3, JCS_RGB, 1 },
 764     { &GUID_WICPixelFormat32bppCMYK, 32, 4, JCS_CMYK },
 765     { &GUID_WICPixelFormat8bppGray, 8, 1, JCS_GRAYSCALE },
 766     { 0 }
 767 };
 768
 769 typedef struct JpegEncoder {
 770     IWICBitmapEncoder IWICBitmapEncoder_iface;
 771     IWICBitmapFrameEncode IWICBitmapFrameEncode_iface;
 772     LONG ref;
 773     struct jpeg_compress_struct cinfo;
 774     struct jpeg_error_mgr jerr;
 775     struct jpeg_destination_mgr dest_mgr;
 776     BOOL initialized;
 777     int frame_count;
 778     BOOL frame_initialized;
 779     BOOL started_compress;
 780     int lines_written;
 781     BOOL frame_committed;
 782     BOOL committed;
 783     UINT width, height;
 784     double xres, yres;
 785     const jpeg_compress_format *format;
 786     IStream *stream;
 787     CRITICAL_SECTION lock;
 788     BYTE dest_buffer[1024];
 789 } JpegEncoder;
 790
 791 static inline JpegEncoder *impl_from_IWICBitmapEncoder(IWICBitmapEncoder *iface)
 792 {
 793     return CONTAINING_RECORD(iface, JpegEncoder, IWICBitmapEncoder_iface);
 794 }
 795
 796 static inline JpegEncoder *impl_from_IWICBitmapFrameEncode(IWICBitmapFrameEncode *iface)
 797 {
 798     return CONTAINING_RECORD(iface, JpegEncoder, IWICBitmapFrameEncode_iface);
 799 }
 800
 801 static inline JpegEncoder *encoder_from_compress(j_compress_ptr compress)
 802 {
 803     return CONTAINING_RECORD(compress, JpegEncoder, cinfo);
 804 }
 805
 806 static void dest_mgr_init_destination(j_compress_ptr cinfo)
 807 {
 808     JpegEncoder *This = encoder_from_compress(cinfo);
 809
 810     This->dest_mgr.next_output_byte = This->dest_buffer;
 811     This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
 812 }
 813
 814 static jpeg_boolean dest_mgr_empty_output_buffer(j_compress_ptr cinfo)
 815 {
 816     JpegEncoder *This = encoder_from_compress(cinfo);
 817     HRESULT hr;
 818     ULONG byteswritten;
 819
 820     hr = IStream_Write(This->stream, This->dest_buffer,
 821         sizeof(This->dest_buffer), &byteswritten);
 822
 823     if (hr != S_OK || byteswritten == 0)
 824     {
 825         ERR("Failed writing data, hr=%x\n", hr);
 826         return FALSE;
 827     }
 828
 829     This->dest_mgr.next_output_byte = This->dest_buffer;
 830     This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
 831     return TRUE;
 832 }
 833
 834 static void dest_mgr_term_destination(j_compress_ptr cinfo)
 835 {
 836     JpegEncoder *This = encoder_from_compress(cinfo);
 837     ULONG byteswritten;
 838     HRESULT hr;
 839
 840     if (This->dest_mgr.free_in_buffer != sizeof(This->dest_buffer))
 841     {
 842         hr = IStream_Write(This->stream, This->dest_buffer,
 843             sizeof(This->dest_buffer) - This->dest_mgr.free_in_buffer, &byteswritten);
 844
 845         if (hr != S_OK || byteswritten == 0)
 846             ERR("Failed writing data, hr=%x\n", hr);
 847     }
 848 }
 849
 850 static HRESULT WINAPI JpegEncoder_Frame_QueryInterface(IWICBitmapFrameEncode *iface, REFIID iid,
 851     void **ppv)
 852 {
 853     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 854     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 855
 856     if (!ppv) return E_INVALIDARG;
 857
 858     if (IsEqualIID(&IID_IUnknown, iid) ||
 859         IsEqualIID(&IID_IWICBitmapFrameEncode, iid))
 860     {
 861         *ppv = &This->IWICBitmapFrameEncode_iface;
 862     }
 863     else
 864     {
 865         *ppv = NULL;
 866         return E_NOINTERFACE;
 867     }
 868
 869     IUnknown_AddRef((IUnknown*)*ppv);
 870     return S_OK;
 871 }
 872
 873 static ULONG WINAPI JpegEncoder_Frame_AddRef(IWICBitmapFrameEncode *iface)
 874 {
 875     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 876     return IWICBitmapEncoder_AddRef(&This->IWICBitmapEncoder_iface);
 877 }
 878
 879 static ULONG WINAPI JpegEncoder_Frame_Release(IWICBitmapFrameEncode *iface)
 880 {
 881     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 882     return IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
 883 }
 884
 885 static HRESULT WINAPI JpegEncoder_Frame_Initialize(IWICBitmapFrameEncode *iface,
 886     IPropertyBag2 *pIEncoderOptions)
 887 {
 888     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 889     TRACE("(%p,%p)\n", iface, pIEncoderOptions);
 890
 891     EnterCriticalSection(&This->lock);
 892
 893     if (This->frame_initialized)
 894     {
 895         LeaveCriticalSection(&This->lock);
 896         return WINCODEC_ERR_WRONGSTATE;
 897     }
 898
 899     This->frame_initialized = TRUE;
 900
 901     LeaveCriticalSection(&This->lock);
 902
 903     return S_OK;
 904 }
 905
 906 static HRESULT WINAPI JpegEncoder_Frame_SetSize(IWICBitmapFrameEncode *iface,
 907     UINT uiWidth, UINT uiHeight)
 908 {
 909     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 910     TRACE("(%p,%u,%u)\n", iface, uiWidth, uiHeight);
 911
 912     EnterCriticalSection(&This->lock);
 913
 914     if (!This->frame_initialized || This->started_compress)
 915     {
 916         LeaveCriticalSection(&This->lock);
 917         return WINCODEC_ERR_WRONGSTATE;
 918     }
 919
 920     This->width = uiWidth;
 921     This->height = uiHeight;
 922
 923     LeaveCriticalSection(&This->lock);
 924
 925     return S_OK;
 926 }
 927
 928 static HRESULT WINAPI JpegEncoder_Frame_SetResolution(IWICBitmapFrameEncode *iface,
 929     double dpiX, double dpiY)
 930 {
 931     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 932     TRACE("(%p,%0.2f,%0.2f)\n", iface, dpiX, dpiY);
 933
 934     EnterCriticalSection(&This->lock);
 935
 936     if (!This->frame_initialized || This->started_compress)
 937     {
 938         LeaveCriticalSection(&This->lock);
 939         return WINCODEC_ERR_WRONGSTATE;
 940     }
 941
 942     This->xres = dpiX;
 943     This->yres = dpiY;
 944
 945     LeaveCriticalSection(&This->lock);
 946
 947     return S_OK;
 948 }
 949
 950 static HRESULT WINAPI JpegEncoder_Frame_SetPixelFormat(IWICBitmapFrameEncode *iface,
 951     WICPixelFormatGUID *pPixelFormat)
 952 {
 953     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
 954     int i;
 955     TRACE("(%p,%s)\n", iface, debugstr_guid(pPixelFormat));
 956
 957     EnterCriticalSection(&This->lock);
 958
 959     if (!This->frame_initialized || This->started_compress)
 960     {
 961         LeaveCriticalSection(&This->lock);
 962         return WINCODEC_ERR_WRONGSTATE;
 963     }
 964
 965     for (i=0; compress_formats[i].guid; i++)
 966     {
 967         if (memcmp(compress_formats[i].guid, pPixelFormat, sizeof(GUID)) == 0)
 968             break;
 969     }
 970
 971     if (!compress_formats[i].guid) i = 0;
 972
 973     This->format = &compress_formats[i];
 974     memcpy(pPixelFormat, This->format->guid, sizeof(GUID));
 975
 976     LeaveCriticalSection(&This->lock);
 977
 978     return S_OK;
 979 }
 980
 981 static HRESULT WINAPI JpegEncoder_Frame_SetColorContexts(IWICBitmapFrameEncode *iface,
 982     UINT cCount, IWICColorContext **ppIColorContext)
 983 {
 984     FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
 985     return E_NOTIMPL;
 986 }
 987
 988 static HRESULT WINAPI JpegEncoder_Frame_SetPalette(IWICBitmapFrameEncode *iface,
 989     IWICPalette *pIPalette)
 990 {
 991     FIXME("(%p,%p): stub\n", iface, pIPalette);
 992     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
 993 }
 994
 995 static HRESULT WINAPI JpegEncoder_Frame_SetThumbnail(IWICBitmapFrameEncode *iface,
 996     IWICBitmapSource *pIThumbnail)
 997 {
 998     FIXME("(%p,%p): stub\n", iface, pIThumbnail);
 999     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1000 }
1001
1002 static HRESULT WINAPI JpegEncoder_Frame_WritePixels(IWICBitmapFrameEncode *iface,
1003     UINT lineCount, UINT cbStride, UINT cbBufferSize, BYTE *pbPixels)
1004 {
1005     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
1006     jmp_buf jmpbuf;
1007     BYTE *swapped_data = NULL, *current_row;
1008     UINT line;
1009     int row_size;
1010     TRACE("(%p,%u,%u,%u,%p)\n", iface, lineCount, cbStride, cbBufferSize, pbPixels);
1011
1012     EnterCriticalSection(&This->lock);
1013
1014     if (!This->frame_initialized || !This->width || !This->height || !This->format)
1015     {
1016         LeaveCriticalSection(&This->lock);
1017         return WINCODEC_ERR_WRONGSTATE;
1018     }
1019
1020     if (lineCount == 0 || lineCount + This->lines_written > This->height)
1021     {
1022         LeaveCriticalSection(&This->lock);
1023         return E_INVALIDARG;
1024     }
1025
1026     /* set up setjmp/longjmp error handling */
1027     if (setjmp(jmpbuf))
1028     {
1029         LeaveCriticalSection(&This->lock);
1030         HeapFree(GetProcessHeap(), 0, swapped_data);
1031         return E_FAIL;
1032     }
1033     This->cinfo.client_data = jmpbuf;
1034
1035     if (!This->started_compress)
1036     {
1037         This->cinfo.image_width = This->width;
1038         This->cinfo.image_height = This->height;
1039         This->cinfo.input_components = This->format->num_components;
1040         This->cinfo.in_color_space = This->format->color_space;
1041
1042         pjpeg_set_defaults(&This->cinfo);
1043
1044         if (This->xres != 0.0 && This->yres != 0.0)
1045         {
1046             This->cinfo.density_unit = 1; /* dots per inch */
1047             This->cinfo.X_density = This->xres;
1048             This->cinfo.Y_density = This->yres;
1049         }
1050
1051         pjpeg_start_compress(&This->cinfo, TRUE);
1052
1053         This->started_compress = TRUE;
1054     }
1055
1056     row_size = This->format->bpp / 8 * This->width;
1057
1058     if (This->format->swap_rgb)
1059     {
1060         swapped_data = HeapAlloc(GetProcessHeap(), 0, row_size);
1061         if (!swapped_data)
1062         {
1063             LeaveCriticalSection(&This->lock);
1064             return E_OUTOFMEMORY;
1065         }
1066     }
1067
1068     for (line=0; line < lineCount; line++)
1069     {
1070         if (This->format->swap_rgb)
1071         {
1072             UINT x;
1073
1074             memcpy(swapped_data, pbPixels + (cbStride * line), row_size);
1075
1076             for (x=0; x < This->width; x++)
1077             {
1078                 BYTE b;
1079
1080                 b = swapped_data[x*3];
1081                 swapped_data[x*3] = swapped_data[x*3+2];
1082                 swapped_data[x*3+2] = b;
1083             }
1084
1085             current_row = swapped_data;
1086         }
1087         else
1088             current_row = pbPixels + (cbStride * line);
1089
1090         if (!pjpeg_write_scanlines(&This->cinfo, &current_row, 1))
1091         {
1092             ERR("failed writing scanlines\n");
1093             LeaveCriticalSection(&This->lock);
1094             HeapFree(GetProcessHeap(), 0, swapped_data);
1095             return E_FAIL;
1096         }
1097
1098         This->lines_written++;
1099     }
1100
1101     LeaveCriticalSection(&This->lock);
1102     HeapFree(GetProcessHeap(), 0, swapped_data);
1103
1104     return S_OK;
1105 }
1106
1107 static HRESULT WINAPI JpegEncoder_Frame_WriteSource(IWICBitmapFrameEncode *iface,
1108     IWICBitmapSource *pIBitmapSource, WICRect *prc)
1109 {
1110     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
1111     HRESULT hr;
1112     WICRect rc;
1113     WICPixelFormatGUID guid;
1114     UINT stride;
1115     BYTE *pixeldata;
1116     TRACE("(%p,%p,%p)\n", iface, pIBitmapSource, prc);
1117
1118     if (!This->frame_initialized || !This->width || !This->height)
1119         return WINCODEC_ERR_WRONGSTATE;
1120
1121     if (!This->format)
1122     {
1123         hr = IWICBitmapSource_GetPixelFormat(pIBitmapSource, &guid);
1124         if (FAILED(hr)) return hr;
1125         hr = IWICBitmapFrameEncode_SetPixelFormat(iface, &guid);
1126         if (FAILED(hr)) return hr;
1127     }
1128
1129     hr = IWICBitmapSource_GetPixelFormat(pIBitmapSource, &guid);
1130     if (FAILED(hr)) return hr;
1131     if (memcmp(&guid, This->format->guid, sizeof(GUID)) != 0)
1132     {
1133         /* FIXME: should use WICConvertBitmapSource to convert */
1134         ERR("format %s unsupported\n", debugstr_guid(&guid));
1135         return E_FAIL;
1136     }
1137
1138     if (This->xres == 0.0 || This->yres == 0.0)
1139     {
1140         double xres, yres;
1141         hr = IWICBitmapSource_GetResolution(pIBitmapSource, &xres, &yres);
1142         if (FAILED(hr)) return hr;
1143         hr = IWICBitmapFrameEncode_SetResolution(iface, xres, yres);
1144         if (FAILED(hr)) return hr;
1145     }
1146
1147     if (!prc)
1148     {
1149         UINT width, height;
1150         hr = IWICBitmapSource_GetSize(pIBitmapSource, &width, &height);
1151         if (FAILED(hr)) return hr;
1152         rc.X = 0;
1153         rc.Y = 0;
1154         rc.Width = width;
1155         rc.Height = height;
1156         prc = &rc;
1157     }
1158
1159     if (prc->Width != This->width) return E_INVALIDARG;
1160
1161     stride = (This->format->bpp * This->width + 7)/8;
1162
1163     pixeldata = HeapAlloc(GetProcessHeap(), 0, stride * prc->Height);
1164     if (!pixeldata) return E_OUTOFMEMORY;
1165
1166     hr = IWICBitmapSource_CopyPixels(pIBitmapSource, prc, stride,
1167         stride*prc->Height, pixeldata);
1168
1169     if (SUCCEEDED(hr))
1170     {
1171         hr = IWICBitmapFrameEncode_WritePixels(iface, prc->Height, stride,
1172             stride*prc->Height, pixeldata);
1173     }
1174
1175     HeapFree(GetProcessHeap(), 0, pixeldata);
1176
1177     return hr;
1178 }
1179
1180 static HRESULT WINAPI JpegEncoder_Frame_Commit(IWICBitmapFrameEncode *iface)
1181 {
1182     JpegEncoder *This = impl_from_IWICBitmapFrameEncode(iface);
1183     jmp_buf jmpbuf;
1184     TRACE("(%p)\n", iface);
1185
1186     EnterCriticalSection(&This->lock);
1187
1188     if (!This->started_compress || This->lines_written != This->height || This->frame_committed)
1189     {
1190         LeaveCriticalSection(&This->lock);
1191         return WINCODEC_ERR_WRONGSTATE;
1192     }
1193
1194     /* set up setjmp/longjmp error handling */
1195     if (setjmp(jmpbuf))
1196     {
1197         LeaveCriticalSection(&This->lock);
1198         return E_FAIL;
1199     }
1200     This->cinfo.client_data = jmpbuf;
1201
1202     pjpeg_finish_compress(&This->cinfo);
1203
1204     This->frame_committed = TRUE;
1205
1206     LeaveCriticalSection(&This->lock);
1207
1208     return S_OK;
1209 }
1210
1211 static HRESULT WINAPI JpegEncoder_Frame_GetMetadataQueryWriter(IWICBitmapFrameEncode *iface,
1212     IWICMetadataQueryWriter **ppIMetadataQueryWriter)
1213 {
1214     FIXME("(%p, %p): stub\n", iface, ppIMetadataQueryWriter);
1215     return E_NOTIMPL;
1216 }
1217
1218 static const IWICBitmapFrameEncodeVtbl JpegEncoder_FrameVtbl = {
1219     JpegEncoder_Frame_QueryInterface,
1220     JpegEncoder_Frame_AddRef,
1221     JpegEncoder_Frame_Release,
1222     JpegEncoder_Frame_Initialize,
1223     JpegEncoder_Frame_SetSize,
1224     JpegEncoder_Frame_SetResolution,
1225     JpegEncoder_Frame_SetPixelFormat,
1226     JpegEncoder_Frame_SetColorContexts,
1227     JpegEncoder_Frame_SetPalette,
1228     JpegEncoder_Frame_SetThumbnail,
1229     JpegEncoder_Frame_WritePixels,
1230     JpegEncoder_Frame_WriteSource,
1231     JpegEncoder_Frame_Commit,
1232     JpegEncoder_Frame_GetMetadataQueryWriter
1233 };
1234
1235 static HRESULT WINAPI JpegEncoder_QueryInterface(IWICBitmapEncoder *iface, REFIID iid,
1236     void **ppv)
1237 {
1238     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1239     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
1240
1241     if (!ppv) return E_INVALIDARG;
1242
1243     if (IsEqualIID(&IID_IUnknown, iid) ||
1244         IsEqualIID(&IID_IWICBitmapEncoder, iid))
1245     {
1246         *ppv = &This->IWICBitmapEncoder_iface;
1247     }
1248     else
1249     {
1250         *ppv = NULL;
1251         return E_NOINTERFACE;
1252     }
1253
1254     IUnknown_AddRef((IUnknown*)*ppv);
1255     return S_OK;
1256 }
1257
1258 static ULONG WINAPI JpegEncoder_AddRef(IWICBitmapEncoder *iface)
1259 {
1260     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1261     ULONG ref = InterlockedIncrement(&This->ref);
1262
1263     TRACE("(%p) refcount=%u\n", iface, ref);
1264
1265     return ref;
1266 }
1267
1268 static ULONG WINAPI JpegEncoder_Release(IWICBitmapEncoder *iface)
1269 {
1270     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1271     ULONG ref = InterlockedDecrement(&This->ref);
1272
1273     TRACE("(%p) refcount=%u\n", iface, ref);
1274
1275     if (ref == 0)
1276     {
1277         This->lock.DebugInfo->Spare[0] = 0;
1278         DeleteCriticalSection(&This->lock);
1279         if (This->initialized) pjpeg_destroy_compress(&This->cinfo);
1280         if (This->stream) IStream_Release(This->stream);
1281         HeapFree(GetProcessHeap(), 0, This);
1282     }
1283
1284     return ref;
1285 }
1286
1287 static HRESULT WINAPI JpegEncoder_Initialize(IWICBitmapEncoder *iface,
1288     IStream *pIStream, WICBitmapEncoderCacheOption cacheOption)
1289 {
1290     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1291     jmp_buf jmpbuf;
1292
1293     TRACE("(%p,%p,%u)\n", iface, pIStream, cacheOption);
1294
1295     EnterCriticalSection(&This->lock);
1296
1297     if (This->initialized)
1298     {
1299         LeaveCriticalSection(&This->lock);
1300         return WINCODEC_ERR_WRONGSTATE;
1301     }
1302
1303     pjpeg_std_error(&This->jerr);
1304
1305     This->jerr.error_exit = error_exit_fn;
1306     This->jerr.emit_message = emit_message_fn;
1307
1308     This->cinfo.err = &This->jerr;
1309
1310     This->cinfo.client_data = jmpbuf;
1311
1312     if (setjmp(jmpbuf))
1313     {
1314         LeaveCriticalSection(&This->lock);
1315         return E_FAIL;
1316     }
1317
1318     pjpeg_CreateCompress(&This->cinfo, JPEG_LIB_VERSION, sizeof(struct jpeg_compress_struct));
1319
1320     This->stream = pIStream;
1321     IStream_AddRef(pIStream);
1322
1323     This->dest_mgr.next_output_byte = This->dest_buffer;
1324     This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
1325
1326     This->dest_mgr.init_destination = dest_mgr_init_destination;
1327     This->dest_mgr.empty_output_buffer = dest_mgr_empty_output_buffer;
1328     This->dest_mgr.term_destination = dest_mgr_term_destination;
1329
1330     This->cinfo.dest = &This->dest_mgr;
1331
1332     This->initialized = TRUE;
1333
1334     LeaveCriticalSection(&This->lock);
1335
1336     return S_OK;
1337 }
1338
1339 static HRESULT WINAPI JpegEncoder_GetContainerFormat(IWICBitmapEncoder *iface,
1340     GUID *pguidContainerFormat)
1341 {
1342     FIXME("(%p,%s): stub\n", iface, debugstr_guid(pguidContainerFormat));
1343     return E_NOTIMPL;
1344 }
1345
1346 static HRESULT WINAPI JpegEncoder_GetEncoderInfo(IWICBitmapEncoder *iface,
1347     IWICBitmapEncoderInfo **ppIEncoderInfo)
1348 {
1349     FIXME("(%p,%p): stub\n", iface, ppIEncoderInfo);
1350     return E_NOTIMPL;
1351 }
1352
1353 static HRESULT WINAPI JpegEncoder_SetColorContexts(IWICBitmapEncoder *iface,
1354     UINT cCount, IWICColorContext **ppIColorContext)
1355 {
1356     FIXME("(%p,%u,%p): stub\n", iface, cCount, ppIColorContext);
1357     return E_NOTIMPL;
1358 }
1359
1360 static HRESULT WINAPI JpegEncoder_SetPalette(IWICBitmapEncoder *iface, IWICPalette *pIPalette)
1361 {
1362     TRACE("(%p,%p)\n", iface, pIPalette);
1363     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1364 }
1365
1366 static HRESULT WINAPI JpegEncoder_SetThumbnail(IWICBitmapEncoder *iface, IWICBitmapSource *pIThumbnail)
1367 {
1368     TRACE("(%p,%p)\n", iface, pIThumbnail);
1369     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1370 }
1371
1372 static HRESULT WINAPI JpegEncoder_SetPreview(IWICBitmapEncoder *iface, IWICBitmapSource *pIPreview)
1373 {
1374     TRACE("(%p,%p)\n", iface, pIPreview);
1375     return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1376 }
1377
1378 static HRESULT WINAPI JpegEncoder_CreateNewFrame(IWICBitmapEncoder *iface,
1379     IWICBitmapFrameEncode **ppIFrameEncode, IPropertyBag2 **ppIEncoderOptions)
1380 {
1381     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1382     HRESULT hr;
1383
1384     TRACE("(%p,%p,%p)\n", iface, ppIFrameEncode, ppIEncoderOptions);
1385
1386     EnterCriticalSection(&This->lock);
1387
1388     if (This->frame_count != 0)
1389     {
1390         LeaveCriticalSection(&This->lock);
1391         return WINCODEC_ERR_UNSUPPORTEDOPERATION;
1392     }
1393
1394     if (!This->initialized)
1395     {
1396         LeaveCriticalSection(&This->lock);
1397         return WINCODEC_ERR_NOTINITIALIZED;
1398     }
1399
1400     hr = CreatePropertyBag2(NULL, 0, ppIEncoderOptions);
1401     if (FAILED(hr))
1402     {
1403         LeaveCriticalSection(&This->lock);
1404         return hr;
1405     }
1406
1407     This->frame_count = 1;
1408
1409     LeaveCriticalSection(&This->lock);
1410
1411     IWICBitmapEncoder_AddRef(iface);
1412     *ppIFrameEncode = &This->IWICBitmapFrameEncode_iface;
1413
1414     return S_OK;
1415 }
1416
1417 static HRESULT WINAPI JpegEncoder_Commit(IWICBitmapEncoder *iface)
1418 {
1419     JpegEncoder *This = impl_from_IWICBitmapEncoder(iface);
1420     TRACE("(%p)\n", iface);
1421
1422     EnterCriticalSection(&This->lock);
1423
1424     if (!This->frame_committed || This->committed)
1425     {
1426         LeaveCriticalSection(&This->lock);
1427         return WINCODEC_ERR_WRONGSTATE;
1428     }
1429
1430     This->committed = TRUE;
1431
1432     LeaveCriticalSection(&This->lock);
1433
1434     return S_OK;
1435 }
1436
1437 static HRESULT WINAPI JpegEncoder_GetMetadataQueryWriter(IWICBitmapEncoder *iface,
1438     IWICMetadataQueryWriter **ppIMetadataQueryWriter)
1439 {
1440     FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryWriter);
1441     return E_NOTIMPL;
1442 }
1443
1444 static const IWICBitmapEncoderVtbl JpegEncoder_Vtbl = {
1445     JpegEncoder_QueryInterface,
1446     JpegEncoder_AddRef,
1447     JpegEncoder_Release,
1448     JpegEncoder_Initialize,
1449     JpegEncoder_GetContainerFormat,
1450     JpegEncoder_GetEncoderInfo,
1451     JpegEncoder_SetColorContexts,
1452     JpegEncoder_SetPalette,
1453     JpegEncoder_SetThumbnail,
1454     JpegEncoder_SetPreview,
1455     JpegEncoder_CreateNewFrame,
1456     JpegEncoder_Commit,
1457     JpegEncoder_GetMetadataQueryWriter
1458 };
1459
1460 HRESULT JpegEncoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
1461 {
1462     JpegEncoder *This;
1463     HRESULT ret;
1464
1465     TRACE("(%p,%s,%p)\n", pUnkOuter, debugstr_guid(iid), ppv);
1466
1467     *ppv = NULL;
1468
1469     if (pUnkOuter) return CLASS_E_NOAGGREGATION;
1470
1471     if (!libjpeg_handle && !load_libjpeg())
1472     {
1473         ERR("Failed writing JPEG because unable to find %s\n",SONAME_LIBJPEG);
1474         return E_FAIL;
1475     }
1476
1477     This = HeapAlloc(GetProcessHeap(), 0, sizeof(JpegEncoder));
1478     if (!This) return E_OUTOFMEMORY;
1479
1480     This->IWICBitmapEncoder_iface.lpVtbl = &JpegEncoder_Vtbl;
1481     This->IWICBitmapFrameEncode_iface.lpVtbl = &JpegEncoder_FrameVtbl;
1482     This->ref = 1;
1483     This->initialized = FALSE;
1484     This->frame_count = 0;
1485     This->frame_initialized = FALSE;
1486     This->started_compress = FALSE;
1487     This->lines_written = 0;
1488     This->frame_committed = FALSE;
1489     This->committed = FALSE;
1490     This->width = This->height = 0;
1491     This->xres = This->yres = 0.0;
1492     This->format = NULL;
1493     This->stream = NULL;
1494     InitializeCriticalSection(&This->lock);
1495     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": JpegEncoder.lock");
1496
1497     ret = IWICBitmapEncoder_QueryInterface(&This->IWICBitmapEncoder_iface, iid, ppv);
1498     IWICBitmapEncoder_Release(&This->IWICBitmapEncoder_iface);
1499
1500     return ret;
1501 }
1502
1503 #else /* !defined(SONAME_LIBJPEG) */
1504
1505 HRESULT JpegDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
1506 {
1507     ERR("Trying to load JPEG picture, but JPEG support is not compiled in.\n");
1508     return E_FAIL;
1509 }
1510
1511 HRESULT JpegEncoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
1512 {
1513     ERR("Trying to save JPEG picture, but JPEG support is not compiled in.\n");
1514     return E_FAIL;
1515 }
1516
1517 #endif