reactos/dll/win32/gdiplus/image.c

   1 /*
   2  * Copyright (C) 2007 Google (Evan Stade)
   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 <stdarg.h>
  20
  21 #include "windef.h"
  22 #include "winbase.h"
  23 #include "winuser.h"
  24 #include "wingdi.h"
  25
  26 #define COBJMACROS
  27 #include "objbase.h"
  28 #include "olectl.h"
  29 #include "ole2.h"
  30
  31 #include "gdiplus.h"
  32 #include "gdiplus_private.h"
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
  36
  37 #define PIXELFORMATBPP(x) ((x) ? ((x) >> 8) & 255 : 24)
  38
  39 static INT ipicture_pixel_height(IPicture *pic)
  40 {
  41     HDC hdcref;
  42     OLE_YSIZE_HIMETRIC y;
  43
  44     IPicture_get_Height(pic, &y);
  45
  46     hdcref = GetDC(0);
  47
  48     y = MulDiv(y, GetDeviceCaps(hdcref, LOGPIXELSY), INCH_HIMETRIC);
  49     ReleaseDC(0, hdcref);
  50
  51     return y;
  52 }
  53
  54 static INT ipicture_pixel_width(IPicture *pic)
  55 {
  56     HDC hdcref;
  57     OLE_XSIZE_HIMETRIC x;
  58
  59     IPicture_get_Width(pic, &x);
  60
  61     hdcref = GetDC(0);
  62
  63     x = MulDiv(x, GetDeviceCaps(hdcref, LOGPIXELSX), INCH_HIMETRIC);
  64
  65     ReleaseDC(0, hdcref);
  66
  67     return x;
  68 }
  69
  70 GpStatus WINGDIPAPI GdipBitmapGetPixel(GpBitmap* bitmap, INT x, INT y,
  71     ARGB *color)
  72 {
  73     static int calls;
  74     TRACE("%p %d %d %p\n", bitmap, x, y, color);
  75
  76     if(!bitmap || !color)
  77         return InvalidParameter;
  78
  79     if(!(calls++))
  80         FIXME("not implemented\n");
  81
  82     *color = 0xdeadbeef;
  83
  84     return NotImplemented;
  85 }
  86
  87 /* This function returns a pointer to an array of pixels that represents the
  88  * bitmap. The *entire* bitmap is locked according to the lock mode specified by
  89  * flags.  It is correct behavior that a user who calls this function with write
  90  * privileges can write to the whole bitmap (not just the area in rect).
  91  *
  92  * FIXME: only used portion of format is bits per pixel. */
  93 GpStatus WINGDIPAPI GdipBitmapLockBits(GpBitmap* bitmap, GDIPCONST GpRect* rect,
  94     UINT flags, PixelFormat format, BitmapData* lockeddata)
  95 {
  96     BOOL bm_is_selected;
  97     INT stride, bitspp = PIXELFORMATBPP(format);
  98     OLE_HANDLE hbm;
  99     HDC hdc;
 100     HBITMAP old = NULL;
 101     BITMAPINFO bmi;
 102     BYTE *buff = NULL;
 103     UINT abs_height;
 104     GpRect act_rect; /* actual rect to be used */
 105
 106     TRACE("%p %p %d %d %p\n", bitmap, rect, flags, format, lockeddata);
 107
 108     if(!lockeddata || !bitmap)
 109         return InvalidParameter;
 110
 111     if(rect){
 112         if(rect->X < 0 || rect->Y < 0 || (rect->X + rect->Width > bitmap->width) ||
 113           (rect->Y + rect->Height > bitmap->height) || !flags)
 114             return InvalidParameter;
 115
 116         act_rect = *rect;
 117     }
 118     else{
 119         act_rect.X = act_rect.Y = 0;
 120         act_rect.Width  = bitmap->width;
 121         act_rect.Height = bitmap->height;
 122     }
 123
 124     if(flags & ImageLockModeUserInputBuf)
 125         return NotImplemented;
 126
 127     if(bitmap->lockmode)
 128         return WrongState;
 129
 130     IPicture_get_Handle(bitmap->image.picture, &hbm);
 131     IPicture_get_CurDC(bitmap->image.picture, &hdc);
 132     bm_is_selected = (hdc != 0);
 133
 134     bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
 135     bmi.bmiHeader.biBitCount = 0;
 136
 137     if(!bm_is_selected){
 138         hdc = CreateCompatibleDC(0);
 139         old = SelectObject(hdc, (HBITMAP)hbm);
 140     }
 141
 142     /* fill out bmi */
 143     GetDIBits(hdc, (HBITMAP)hbm, 0, 0, NULL, &bmi, DIB_RGB_COLORS);
 144
 145     abs_height = abs(bmi.bmiHeader.biHeight);
 146     stride = bmi.bmiHeader.biWidth * bitspp / 8;
 147     stride = (stride + 3) & ~3;
 148
 149     buff = GdipAlloc(stride * abs_height);
 150
 151     bmi.bmiHeader.biBitCount = bitspp;
 152
 153     if(buff)
 154         GetDIBits(hdc, (HBITMAP)hbm, 0, abs_height, buff, &bmi, DIB_RGB_COLORS);
 155
 156     if(!bm_is_selected){
 157         SelectObject(hdc, old);
 158         DeleteDC(hdc);
 159     }
 160
 161     if(!buff)
 162         return OutOfMemory;
 163
 164     lockeddata->Width  = act_rect.Width;
 165     lockeddata->Height = act_rect.Height;
 166     lockeddata->PixelFormat = format;
 167     lockeddata->Reserved = flags;
 168
 169     if(bmi.bmiHeader.biHeight > 0){
 170         lockeddata->Stride = -stride;
 171         lockeddata->Scan0  = buff + (bitspp / 8) * act_rect.X +
 172                              stride * (abs_height - 1 - act_rect.Y);
 173     }
 174     else{
 175         lockeddata->Stride = stride;
 176         lockeddata->Scan0  = buff + (bitspp / 8) * act_rect.X + stride * act_rect.Y;
 177     }
 178
 179     bitmap->lockmode = flags;
 180     bitmap->numlocks++;
 181
 182     bitmap->bitmapbits = buff;
 183
 184     return Ok;
 185 }
 186
 187 GpStatus WINGDIPAPI GdipBitmapUnlockBits(GpBitmap* bitmap,
 188     BitmapData* lockeddata)
 189 {
 190     OLE_HANDLE hbm;
 191     HDC hdc;
 192     HBITMAP old = NULL;
 193     BOOL bm_is_selected;
 194     BITMAPINFO bmi;
 195
 196     if(!bitmap || !lockeddata)
 197         return InvalidParameter;
 198
 199     if(!bitmap->lockmode)
 200         return WrongState;
 201
 202     if(lockeddata->Reserved & ImageLockModeUserInputBuf)
 203         return NotImplemented;
 204
 205     if(lockeddata->Reserved & ImageLockModeRead){
 206         if(!(--bitmap->numlocks))
 207             bitmap->lockmode = 0;
 208
 209         GdipFree(bitmap->bitmapbits);
 210         bitmap->bitmapbits = NULL;
 211         return Ok;
 212     }
 213
 214     IPicture_get_Handle(bitmap->image.picture, &hbm);
 215     IPicture_get_CurDC(bitmap->image.picture, &hdc);
 216     bm_is_selected = (hdc != 0);
 217
 218     bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
 219     bmi.bmiHeader.biBitCount = 0;
 220
 221     if(!bm_is_selected){
 222         hdc = CreateCompatibleDC(0);
 223         old = SelectObject(hdc, (HBITMAP)hbm);
 224     }
 225
 226     GetDIBits(hdc, (HBITMAP)hbm, 0, 0, NULL, &bmi, DIB_RGB_COLORS);
 227     bmi.bmiHeader.biBitCount = PIXELFORMATBPP(lockeddata->PixelFormat);
 228     SetDIBits(hdc, (HBITMAP)hbm, 0, abs(bmi.bmiHeader.biHeight),
 229               bitmap->bitmapbits, &bmi, DIB_RGB_COLORS);
 230
 231     if(!bm_is_selected){
 232         SelectObject(hdc, old);
 233         DeleteDC(hdc);
 234     }
 235
 236     GdipFree(bitmap->bitmapbits);
 237     bitmap->bitmapbits = NULL;
 238     bitmap->lockmode = 0;
 239
 240     return Ok;
 241 }
 242
 243 GpStatus WINGDIPAPI GdipCloneImage(GpImage *image, GpImage **cloneImage)
 244 {
 245     IStream* stream;
 246     HRESULT hr;
 247     LONG size;
 248
 249     TRACE("%p, %p\n", image, cloneImage);
 250
 251     if (!image || !cloneImage)
 252         return InvalidParameter;
 253
 254     hr = CreateStreamOnHGlobal(0, TRUE, &stream);
 255     if (FAILED(hr))
 256         return GenericError;
 257
 258     *cloneImage = GdipAlloc(sizeof(GpImage));
 259     if (!*cloneImage)
 260     {
 261         IStream_Release(stream);
 262         return OutOfMemory;
 263     }
 264     (*cloneImage)->type = image->type;
 265     (*cloneImage)->flags = image->flags;
 266
 267     hr = IPicture_SaveAsFile(image->picture, stream, FALSE, &size);
 268     if(FAILED(hr))
 269     {
 270         WARN("Failed to save image on stream\n");
 271         goto out;
 272     }
 273
 274     hr = OleLoadPicture(stream, size, FALSE, &IID_IPicture,
 275             (LPVOID*) &(*cloneImage)->picture);
 276     if (FAILED(hr))
 277     {
 278         WARN("Failed to load image from stream\n");
 279         goto out;
 280     }
 281
 282     IStream_Release(stream);
 283     return Ok;
 284 out:
 285     IStream_Release(stream);
 286     GdipFree(*cloneImage);
 287     *cloneImage = NULL;
 288     return GenericError;
 289 }
 290
 291 GpStatus WINGDIPAPI GdipCreateBitmapFromFile(GDIPCONST WCHAR* filename,
 292     GpBitmap **bitmap)
 293 {
 294     GpStatus stat;
 295     IStream *stream;
 296
 297     if(!filename || !bitmap)
 298         return InvalidParameter;
 299
 300     stat = GdipCreateStreamOnFile(filename, GENERIC_READ, &stream);
 301
 302     if(stat != Ok)
 303         return stat;
 304
 305     stat = GdipCreateBitmapFromStream(stream, bitmap);
 306
 307     IStream_Release(stream);
 308
 309     return stat;
 310 }
 311
 312 GpStatus WINGDIPAPI GdipCreateBitmapFromGdiDib(GDIPCONST BITMAPINFO* info,
 313                                                VOID *bits, GpBitmap **bitmap)
 314 {
 315     DWORD height, stride;
 316     PixelFormat format;
 317
 318     FIXME("(%p, %p, %p) - partially implemented\n", info, bits, bitmap);
 319
 320     height = abs(info->bmiHeader.biHeight);
 321     stride = ((info->bmiHeader.biWidth * info->bmiHeader.biBitCount + 31) >> 3) & ~3;
 322
 323     if(info->bmiHeader.biHeight > 0) /* bottom-up */
 324     {
 325         bits = (BYTE*)bits + (height - 1) * stride;
 326         stride = -stride;
 327     }
 328
 329     switch(info->bmiHeader.biBitCount) {
 330     case 1:
 331         format = PixelFormat1bppIndexed;
 332         break;
 333     case 4:
 334         format = PixelFormat4bppIndexed;
 335         break;
 336     case 8:
 337         format = PixelFormat8bppIndexed;
 338         break;
 339     case 24:
 340         format = PixelFormat24bppRGB;
 341         break;
 342     default:
 343         FIXME("don't know how to handle %d bpp\n", info->bmiHeader.biBitCount);
 344         *bitmap = NULL;
 345         return InvalidParameter;
 346     }
 347
 348     return GdipCreateBitmapFromScan0(info->bmiHeader.biWidth, height, stride, format,
 349                                      bits, bitmap);
 350
 351 }
 352
 353 /* FIXME: no icm */
 354 GpStatus WINGDIPAPI GdipCreateBitmapFromFileICM(GDIPCONST WCHAR* filename,
 355     GpBitmap **bitmap)
 356 {
 357     return GdipCreateBitmapFromFile(filename, bitmap);
 358 }
 359
 360 GpStatus WINGDIPAPI GdipCreateBitmapFromResource(HINSTANCE hInstance,
 361     GDIPCONST WCHAR* lpBitmapName, GpBitmap** bitmap)
 362 {
 363     HBITMAP hbm;
 364     GpStatus stat = InvalidParameter;
 365
 366     if(!lpBitmapName || !bitmap)
 367         return InvalidParameter;
 368
 369     /* load DIB */
 370     hbm = (HBITMAP)LoadImageW(hInstance,lpBitmapName,IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION);
 371
 372     if(hbm){
 373         stat = GdipCreateBitmapFromHBITMAP(hbm, NULL, bitmap);
 374         DeleteObject(hbm);
 375     }
 376
 377     return stat;
 378 }
 379
 380 GpStatus WINGDIPAPI GdipCreateHBITMAPFromBitmap(GpBitmap* bitmap,
 381     HBITMAP* hbmReturn, ARGB background)
 382 {
 383     FIXME("stub\n");
 384
 385     hbmReturn = NULL;
 386
 387     return NotImplemented;
 388 }
 389
 390 GpStatus WINGDIPAPI GdipConvertToEmfPlus(const GpGraphics* ref,
 391     GpMetafile* metafile, BOOL* succ, EmfType emfType,
 392     const WCHAR* description, GpMetafile** out_metafile)
 393 {
 394     static int calls;
 395
 396     if(!ref || !metafile || !out_metafile)
 397         return InvalidParameter;
 398
 399     *succ = FALSE;
 400     *out_metafile = NULL;
 401
 402     if(!(calls++))
 403         FIXME("not implemented\n");
 404
 405     return NotImplemented;
 406 }
 407
 408 /* FIXME: this should create a bitmap in the given size with the attributes
 409  * (resolution etc.) of the graphics object */
 410 GpStatus WINGDIPAPI GdipCreateBitmapFromGraphics(INT width, INT height,
 411     GpGraphics* target, GpBitmap** bitmap)
 412 {
 413     static int calls;
 414     GpStatus ret;
 415
 416     if(!target || !bitmap)
 417         return InvalidParameter;
 418
 419     if(!(calls++))
 420         FIXME("hacked stub\n");
 421
 422     ret = GdipCreateBitmapFromScan0(width, height, 0, PixelFormat24bppRGB,
 423                                     NULL, bitmap);
 424
 425     return ret;
 426 }
 427
 428 GpStatus WINGDIPAPI GdipCreateBitmapFromScan0(INT width, INT height, INT stride,
 429     PixelFormat format, BYTE* scan0, GpBitmap** bitmap)
 430 {
 431     BITMAPFILEHEADER *bmfh;
 432     BITMAPINFOHEADER *bmih;
 433     BYTE *buff;
 434     INT datalen, size;
 435     IStream *stream;
 436
 437     TRACE("%d %d %d %d %p %p\n", width, height, stride, format, scan0, bitmap);
 438
 439     if(!bitmap || width <= 0 || height <= 0 || (scan0 && (stride % 4))){
 440         *bitmap = NULL;
 441         return InvalidParameter;
 442     }
 443
 444     if(scan0 && !stride)
 445         return InvalidParameter;
 446
 447     /* FIXME: windows allows negative stride (reads backwards from scan0) */
 448     if(stride < 0){
 449         FIXME("negative stride\n");
 450         return InvalidParameter;
 451     }
 452
 453     *bitmap = GdipAlloc(sizeof(GpBitmap));
 454     if(!*bitmap)    return OutOfMemory;
 455
 456     if(stride == 0){
 457         stride = width * (PIXELFORMATBPP(format) / 8);
 458         stride = (stride + 3) & ~3;
 459     }
 460
 461     datalen = abs(stride * height);
 462     size = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER) + datalen;
 463     buff = GdipAlloc(size);
 464     if(!buff){
 465         GdipFree(*bitmap);
 466         return OutOfMemory;
 467     }
 468
 469     bmfh = (BITMAPFILEHEADER*) buff;
 470     bmih = (BITMAPINFOHEADER*) (bmfh + 1);
 471
 472     bmfh->bfType    = (((WORD)'M') << 8) + (WORD)'B';
 473     bmfh->bfSize    = size;
 474     bmfh->bfOffBits = size - datalen;
 475
 476     bmih->biSize            = sizeof(BITMAPINFOHEADER);
 477     bmih->biWidth           = width;
 478     bmih->biHeight          = -height;
 479     /* FIXME: use the rest of the data from format */
 480     bmih->biBitCount        = PIXELFORMATBPP(format);
 481     bmih->biCompression     = BI_RGB;
 482     bmih->biSizeImage       = datalen;
 483
 484     if(scan0)
 485         memcpy(bmih + 1, scan0, datalen);
 486     else
 487         memset(bmih + 1, 0, datalen);
 488
 489     if(CreateStreamOnHGlobal(buff, TRUE, &stream) != S_OK){
 490         ERR("could not make stream\n");
 491         GdipFree(*bitmap);
 492         GdipFree(buff);
 493         return GenericError;
 494     }
 495
 496     if(OleLoadPicture(stream, 0, FALSE, &IID_IPicture,
 497         (LPVOID*) &((*bitmap)->image.picture)) != S_OK){
 498         TRACE("Could not load picture\n");
 499         IStream_Release(stream);
 500         GdipFree(*bitmap);
 501         GdipFree(buff);
 502         return GenericError;
 503     }
 504
 505     (*bitmap)->image.type = ImageTypeBitmap;
 506     (*bitmap)->image.flags = ImageFlagsNone;
 507     (*bitmap)->width = width;
 508     (*bitmap)->height = height;
 509     (*bitmap)->format = format;
 510
 511     return Ok;
 512 }
 513
 514 GpStatus WINGDIPAPI GdipCreateBitmapFromStream(IStream* stream,
 515     GpBitmap **bitmap)
 516 {
 517     GpStatus stat;
 518
 519     stat = GdipLoadImageFromStream(stream, (GpImage**) bitmap);
 520
 521     if(stat != Ok)
 522         return stat;
 523
 524     if((*bitmap)->image.type != ImageTypeBitmap){
 525         IPicture_Release((*bitmap)->image.picture);
 526         GdipFree(bitmap);
 527         return GenericError; /* FIXME: what error to return? */
 528     }
 529
 530     return Ok;
 531 }
 532
 533 /* FIXME: no icm */
 534 GpStatus WINGDIPAPI GdipCreateBitmapFromStreamICM(IStream* stream,
 535     GpBitmap **bitmap)
 536 {
 537     return GdipCreateBitmapFromStream(stream, bitmap);
 538 }
 539
 540 GpStatus WINGDIPAPI GdipDisposeImage(GpImage *image)
 541 {
 542     HDC hdc;
 543
 544     if(!image)
 545         return InvalidParameter;
 546
 547     IPicture_get_CurDC(image->picture, &hdc);
 548     DeleteDC(hdc);
 549     IPicture_Release(image->picture);
 550     if (image->type == ImageTypeBitmap)
 551         GdipFree(((GpBitmap*)image)->bitmapbits);
 552     GdipFree(image);
 553
 554     return Ok;
 555 }
 556
 557 GpStatus WINGDIPAPI GdipFindFirstImageItem(GpImage *image, ImageItemData* item)
 558 {
 559     if(!image || !item)
 560         return InvalidParameter;
 561
 562     return NotImplemented;
 563 }
 564
 565 GpStatus WINGDIPAPI GdipGetImageBounds(GpImage *image, GpRectF *srcRect,
 566     GpUnit *srcUnit)
 567 {
 568     if(!image || !srcRect || !srcUnit)
 569         return InvalidParameter;
 570     if(image->type == ImageTypeMetafile){
 571         *srcRect = ((GpMetafile*)image)->bounds;
 572         *srcUnit = ((GpMetafile*)image)->unit;
 573     }
 574     else if(image->type == ImageTypeBitmap){
 575         srcRect->X = srcRect->Y = 0.0;
 576         srcRect->Width = (REAL) ((GpBitmap*)image)->width;
 577         srcRect->Height = (REAL) ((GpBitmap*)image)->height;
 578         *srcUnit = UnitPixel;
 579     }
 580     else{
 581         srcRect->X = srcRect->Y = 0.0;
 582         srcRect->Width = ipicture_pixel_width(image->picture);
 583         srcRect->Height = ipicture_pixel_height(image->picture);
 584         *srcUnit = UnitPixel;
 585     }
 586
 587     TRACE("returning (%f, %f) (%f, %f) unit type %d\n", srcRect->X, srcRect->Y,
 588           srcRect->Width, srcRect->Height, *srcUnit);
 589
 590     return Ok;
 591 }
 592
 593 GpStatus WINGDIPAPI GdipGetImageDimension(GpImage *image, REAL *width,
 594     REAL *height)
 595 {
 596     if(!image || !height || !width)
 597         return InvalidParameter;
 598
 599     if(image->type == ImageTypeMetafile){
 600         HDC hdc = GetDC(0);
 601
 602         *height = convert_unit(hdc, ((GpMetafile*)image)->unit) *
 603                         ((GpMetafile*)image)->bounds.Height;
 604
 605         *width = convert_unit(hdc, ((GpMetafile*)image)->unit) *
 606                         ((GpMetafile*)image)->bounds.Width;
 607
 608         ReleaseDC(0, hdc);
 609     }
 610
 611     else if(image->type == ImageTypeBitmap){
 612         *height = ((GpBitmap*)image)->height;
 613         *width = ((GpBitmap*)image)->width;
 614     }
 615     else{
 616         *height = ipicture_pixel_height(image->picture);
 617         *width = ipicture_pixel_width(image->picture);
 618     }
 619
 620     TRACE("returning (%f, %f)\n", *height, *width);
 621     return Ok;
 622 }
 623
 624 GpStatus WINGDIPAPI GdipGetImageGraphicsContext(GpImage *image,
 625     GpGraphics **graphics)
 626 {
 627     HDC hdc;
 628
 629     if(!image || !graphics)
 630         return InvalidParameter;
 631
 632     if(image->type != ImageTypeBitmap){
 633         FIXME("not implemented for image type %d\n", image->type);
 634         return NotImplemented;
 635     }
 636
 637     IPicture_get_CurDC(image->picture, &hdc);
 638
 639     if(!hdc){
 640         hdc = CreateCompatibleDC(0);
 641         IPicture_SelectPicture(image->picture, hdc, NULL, NULL);
 642     }
 643
 644     return GdipCreateFromHDC(hdc, graphics);
 645 }
 646
 647 GpStatus WINGDIPAPI GdipGetImageHeight(GpImage *image, UINT *height)
 648 {
 649     if(!image || !height)
 650         return InvalidParameter;
 651
 652     if(image->type == ImageTypeMetafile){
 653         HDC hdc = GetDC(0);
 654
 655         *height = roundr(convert_unit(hdc, ((GpMetafile*)image)->unit) *
 656                         ((GpMetafile*)image)->bounds.Height);
 657
 658         ReleaseDC(0, hdc);
 659     }
 660     else if(image->type == ImageTypeBitmap)
 661         *height = ((GpBitmap*)image)->height;
 662     else
 663         *height = ipicture_pixel_height(image->picture);
 664
 665     TRACE("returning %d\n", *height);
 666
 667     return Ok;
 668 }
 669
 670 GpStatus WINGDIPAPI GdipGetImageHorizontalResolution(GpImage *image, REAL *res)
 671 {
 672     static int calls;
 673
 674     if(!image || !res)
 675         return InvalidParameter;
 676
 677     if(!(calls++))
 678         FIXME("not implemented\n");
 679
 680     return NotImplemented;
 681 }
 682
 683 /* FIXME: test this function for non-bitmap types */
 684 GpStatus WINGDIPAPI GdipGetImagePixelFormat(GpImage *image, PixelFormat *format)
 685 {
 686     if(!image || !format)
 687         return InvalidParameter;
 688
 689     if(image->type != ImageTypeBitmap)
 690         *format = PixelFormat24bppRGB;
 691     else
 692         *format = ((GpBitmap*) image)->format;
 693
 694     return Ok;
 695 }
 696
 697 GpStatus WINGDIPAPI GdipGetImageRawFormat(GpImage *image, GUID *format)
 698 {
 699     static int calls;
 700
 701     if(!image || !format)
 702         return InvalidParameter;
 703
 704     if(!(calls++))
 705         FIXME("not implemented\n");
 706
 707     return NotImplemented;
 708 }
 709
 710 GpStatus WINGDIPAPI GdipGetImageType(GpImage *image, ImageType *type)
 711 {
 712     if(!image || !type)
 713         return InvalidParameter;
 714
 715     *type = image->type;
 716
 717     return Ok;
 718 }
 719
 720 GpStatus WINGDIPAPI GdipGetImageVerticalResolution(GpImage *image, REAL *res)
 721 {
 722     static int calls;
 723
 724     if(!image || !res)
 725         return InvalidParameter;
 726
 727     if(!(calls++))
 728         FIXME("not implemented\n");
 729
 730     return NotImplemented;
 731 }
 732
 733 GpStatus WINGDIPAPI GdipGetImageWidth(GpImage *image, UINT *width)
 734 {
 735     if(!image || !width)
 736         return InvalidParameter;
 737
 738     if(image->type == ImageTypeMetafile){
 739         HDC hdc = GetDC(0);
 740
 741         *width = roundr(convert_unit(hdc, ((GpMetafile*)image)->unit) *
 742                         ((GpMetafile*)image)->bounds.Width);
 743
 744         ReleaseDC(0, hdc);
 745     }
 746     else if(image->type == ImageTypeBitmap)
 747         *width = ((GpBitmap*)image)->width;
 748     else
 749         *width = ipicture_pixel_width(image->picture);
 750
 751     TRACE("returning %d\n", *width);
 752
 753     return Ok;
 754 }
 755
 756 GpStatus WINGDIPAPI GdipGetMetafileHeaderFromMetafile(GpMetafile * metafile,
 757     MetafileHeader * header)
 758 {
 759     static int calls;
 760
 761     if(!metafile || !header)
 762         return InvalidParameter;
 763
 764     if(!(calls++))
 765         FIXME("not implemented\n");
 766
 767     return Ok;
 768 }
 769
 770 GpStatus WINGDIPAPI GdipGetPropertyItemSize(GpImage *image, PROPID pid,
 771     UINT* size)
 772 {
 773     static int calls;
 774
 775     TRACE("%p %x %p\n", image, pid, size);
 776
 777     if(!size || !image)
 778         return InvalidParameter;
 779
 780     if(!(calls++))
 781         FIXME("not implemented\n");
 782
 783     return NotImplemented;
 784 }
 785
 786 GpStatus WINGDIPAPI GdipImageGetFrameCount(GpImage *image,
 787     GDIPCONST GUID* dimensionID, UINT* count)
 788 {
 789     static int calls;
 790
 791     if(!image || !dimensionID || !count)
 792         return InvalidParameter;
 793
 794     if(!(calls++))
 795         FIXME("not implemented\n");
 796
 797     return NotImplemented;
 798 }
 799
 800 GpStatus WINGDIPAPI GdipImageGetFrameDimensionsCount(GpImage *image,
 801     UINT* count)
 802 {
 803     if(!image || !count)
 804         return InvalidParameter;
 805
 806     *count = 1;
 807
 808     FIXME("stub\n");
 809
 810     return Ok;
 811 }
 812
 813 GpStatus WINGDIPAPI GdipImageGetFrameDimensionsList(GpImage* image,
 814     GUID* dimensionIDs, UINT count)
 815 {
 816     static int calls;
 817
 818     if(!image || !dimensionIDs)
 819         return InvalidParameter;
 820
 821     if(!(calls++))
 822         FIXME("not implemented\n");
 823
 824     return Ok;
 825 }
 826
 827 GpStatus WINGDIPAPI GdipImageSelectActiveFrame(GpImage *image,
 828     GDIPCONST GUID* dimensionID, UINT frameidx)
 829 {
 830     static int calls;
 831
 832     if(!image || !dimensionID)
 833         return InvalidParameter;
 834
 835     if(!(calls++))
 836         FIXME("not implemented\n");
 837
 838     return Ok;
 839 }
 840
 841 GpStatus WINGDIPAPI GdipLoadImageFromFile(GDIPCONST WCHAR* filename,
 842                                           GpImage **image)
 843 {
 844     GpStatus stat;
 845     IStream *stream;
 846
 847     if (!filename || !image)
 848         return InvalidParameter;
 849
 850     stat = GdipCreateStreamOnFile(filename, GENERIC_READ, &stream);
 851
 852     if (stat != Ok)
 853         return stat;
 854
 855     stat = GdipLoadImageFromStream(stream, image);
 856
 857     IStream_Release(stream);
 858
 859     return stat;
 860 }
 861
 862 /* FIXME: no icm handling */
 863 GpStatus WINGDIPAPI GdipLoadImageFromFileICM(GDIPCONST WCHAR* filename,GpImage **image)
 864 {
 865     return GdipLoadImageFromFile(filename, image);
 866 }
 867
 868 GpStatus WINGDIPAPI GdipLoadImageFromStream(IStream* stream, GpImage **image)
 869 {
 870     IPicture *pic;
 871     short type;
 872
 873     if(!stream || !image)
 874         return InvalidParameter;
 875
 876     if(OleLoadPicture(stream, 0, FALSE, &IID_IPicture,
 877         (LPVOID*) &pic) != S_OK){
 878         TRACE("Could not load picture\n");
 879         return GenericError;
 880     }
 881
 882     IPicture_get_Type(pic, &type);
 883
 884     if(type == PICTYPE_BITMAP){
 885         BITMAPINFO bmi;
 886         BITMAPCOREHEADER* bmch;
 887         OLE_HANDLE hbm;
 888         HDC hdc;
 889
 890         *image = GdipAlloc(sizeof(GpBitmap));
 891         if(!*image) return OutOfMemory;
 892         (*image)->type = ImageTypeBitmap;
 893
 894         (*((GpBitmap**) image))->width = ipicture_pixel_width(pic);
 895         (*((GpBitmap**) image))->height = ipicture_pixel_height(pic);
 896
 897         /* get the pixel format */
 898         IPicture_get_Handle(pic, &hbm);
 899         IPicture_get_CurDC(pic, &hdc);
 900
 901         ZeroMemory(&bmi, sizeof(bmi));
 902         bmch = (BITMAPCOREHEADER*) (&bmi.bmiHeader);
 903         bmch->bcSize = sizeof(BITMAPCOREHEADER);
 904
 905         if(!hdc){
 906             HBITMAP old;
 907             hdc = CreateCompatibleDC(0);
 908             old = SelectObject(hdc, (HBITMAP)hbm);
 909             GetDIBits(hdc, (HBITMAP)hbm, 0, 0, NULL, &bmi, DIB_RGB_COLORS);
 910             SelectObject(hdc, old);
 911             DeleteDC(hdc);
 912         }
 913         else
 914             GetDIBits(hdc, (HBITMAP)hbm, 0, 0, NULL, &bmi, DIB_RGB_COLORS);
 915
 916         (*((GpBitmap**) image))->format = (bmch->bcBitCount << 8) | PixelFormatGDI;
 917     }
 918     else if(type == PICTYPE_METAFILE || type == PICTYPE_ENHMETAFILE){
 919         /* FIXME: missing initialization code */
 920         *image = GdipAlloc(sizeof(GpMetafile));
 921         if(!*image) return OutOfMemory;
 922         (*image)->type = ImageTypeMetafile;
 923     }
 924     else{
 925         *image = GdipAlloc(sizeof(GpImage));
 926         if(!*image) return OutOfMemory;
 927         (*image)->type = ImageTypeUnknown;
 928     }
 929
 930     (*image)->picture = pic;
 931     (*image)->flags   = ImageFlagsNone;
 932
 933     return Ok;
 934 }
 935
 936 /* FIXME: no ICM */
 937 GpStatus WINGDIPAPI GdipLoadImageFromStreamICM(IStream* stream, GpImage **image)
 938 {
 939     return GdipLoadImageFromStream(stream, image);
 940 }
 941
 942 GpStatus WINGDIPAPI GdipRemovePropertyItem(GpImage *image, PROPID propId)
 943 {
 944     static int calls;
 945
 946     if(!image)
 947         return InvalidParameter;
 948
 949     if(!(calls++))
 950         FIXME("not implemented\n");
 951
 952     return NotImplemented;
 953 }
 954
 955 GpStatus WINGDIPAPI GdipSaveImageToFile(GpImage *image, GDIPCONST WCHAR* filename,
 956                                         GDIPCONST CLSID *clsidEncoder,
 957                                         GDIPCONST EncoderParameters *encoderParams)
 958 {
 959     GpStatus stat;
 960     IStream *stream;
 961
 962     if (!image || !filename|| !clsidEncoder)
 963         return InvalidParameter;
 964
 965     if (!(image->picture))
 966         return InvalidParameter;
 967
 968     stat = GdipCreateStreamOnFile(filename, GENERIC_WRITE, &stream);
 969     if (stat != Ok)
 970         return GenericError;
 971
 972     stat = GdipSaveImageToStream(image, stream, clsidEncoder, encoderParams);
 973
 974     IStream_Release(stream);
 975     return stat;
 976 }
 977
 978 /*************************************************************************
 979  * Encoding functions -
 980  *   These functions encode an image in different image file formats.
 981  */
 982 #define BITMAP_FORMAT_BMP   0x4d42 /* "BM" */
 983 #define BITMAP_FORMAT_JPEG  0xd8ff
 984 #define BITMAP_FORMAT_GIF   0x4947
 985 #define BITMAP_FORMAT_PNG   0x5089
 986 #define BITMAP_FORMAT_APM   0xcdd7
 987
 988 static GpStatus encode_image_BMP(LPVOID bitmap_bits, LPBITMAPINFO bitmap_info,
 989                                  void **output, unsigned int *output_size)
 990 {
 991     int num_palette_entries;
 992     BITMAPFILEHEADER *bmp_file_hdr;
 993     BITMAPINFO *bmp_info_hdr;
 994
 995     if (bitmap_info->bmiHeader.biClrUsed) {
 996         num_palette_entries = bitmap_info->bmiHeader.biClrUsed;
 997         if (num_palette_entries > 256) num_palette_entries = 256;
 998     } else {
 999         if (bitmap_info->bmiHeader.biBitCount <= 8)
1000             num_palette_entries = 1 << bitmap_info->bmiHeader.biBitCount;
1001         else
1002             num_palette_entries = 0;
1003     }
1004
1005     *output_size =
1006         sizeof(BITMAPFILEHEADER) +
1007         sizeof(BITMAPINFOHEADER) +
1008         num_palette_entries * sizeof(RGBQUAD) +
1009         bitmap_info->bmiHeader.biSizeImage;
1010
1011     *output = GdipAlloc(*output_size);
1012
1013     bmp_file_hdr = (BITMAPFILEHEADER*) *output;
1014     bmp_file_hdr->bfType = BITMAP_FORMAT_BMP;
1015     bmp_file_hdr->bfSize = *output_size;
1016     bmp_file_hdr->bfOffBits =
1017         sizeof(BITMAPFILEHEADER) +
1018         sizeof(BITMAPINFOHEADER) +
1019         num_palette_entries * sizeof (RGBQUAD);
1020
1021     bmp_info_hdr = (BITMAPINFO*) ((unsigned char*)(*output) + sizeof(BITMAPFILEHEADER));
1022     memcpy(bmp_info_hdr, bitmap_info, sizeof(BITMAPINFOHEADER) + num_palette_entries * sizeof(RGBQUAD));
1023     memcpy((unsigned char *)(*output) +
1024            sizeof(BITMAPFILEHEADER) +
1025            sizeof(BITMAPINFOHEADER) +
1026            num_palette_entries * sizeof(RGBQUAD),
1027            bitmap_bits, bitmap_info->bmiHeader.biSizeImage);
1028
1029     return Ok;
1030 }
1031
1032 typedef GpStatus encode_image_func(LPVOID bitmap_bits, LPBITMAPINFO bitmap_info,
1033                                    void **output, unsigned int *output_size);
1034
1035 typedef enum {
1036     BMP,
1037     NUM_ENCODERS_SUPPORTED
1038 } ImageFormat;
1039
1040 static const ImageCodecInfo codecs[NUM_ENCODERS_SUPPORTED];
1041 static encode_image_func *const encode_image_funcs[NUM_ENCODERS_SUPPORTED] = {
1042     encode_image_BMP,
1043 };
1044
1045 /*****************************************************************************
1046  * GdipSaveImageToStream [GDIPLUS.@]
1047  */
1048 GpStatus WINGDIPAPI GdipSaveImageToStream(GpImage *image, IStream* stream,
1049     GDIPCONST CLSID* clsid, GDIPCONST EncoderParameters* params)
1050 {
1051     GpStatus stat;
1052     HRESULT hr;
1053     short type;
1054     HBITMAP hbmp;
1055     HBITMAP old_hbmp;
1056     HDC hdc;
1057     int bm_is_selected;
1058     BITMAPINFO bmp_info;
1059     LPVOID bmp_bits;
1060     encode_image_func* encode_image;
1061     LPVOID output;
1062     unsigned int output_size;
1063     ULONG dummy;
1064     int i;
1065
1066     old_hbmp = 0;
1067     output = NULL;
1068     output_size = 0;
1069
1070     if(!image || !stream)
1071         return InvalidParameter;
1072
1073     if (!image->picture)
1074         return GenericError;
1075
1076     hr = IPicture_get_Type(image->picture, &type);
1077     if (FAILED(hr) || type != PICTYPE_BITMAP)
1078         return GenericError;
1079
1080     /* select correct encoder */
1081     encode_image = NULL;
1082     for (i = 0; i < NUM_ENCODERS_SUPPORTED; i++) {
1083         if (IsEqualCLSID(clsid, &codecs[i].Clsid))
1084             encode_image = encode_image_funcs[i];
1085     }
1086     if (encode_image == NULL)
1087         return UnknownImageFormat;
1088
1089     /* extract underlying hbitmap representation from the IPicture */
1090     hr = IPicture_get_Handle(image->picture, (OLE_HANDLE*)&hbmp);
1091     if (FAILED(hr) || !hbmp)
1092         return GenericError;
1093     hr = IPicture_get_CurDC(image->picture, &hdc);
1094     if (FAILED(hr))
1095         return GenericError;
1096     bm_is_selected = (hdc != 0);
1097     if (!bm_is_selected) {
1098         hdc = CreateCompatibleDC(0);
1099         old_hbmp = SelectObject(hdc, hbmp);
1100     }
1101
1102     /* get bits from HBITMAP */
1103     bmp_info.bmiHeader.biSize = sizeof(bmp_info.bmiHeader);
1104     bmp_info.bmiHeader.biBitCount = 0;
1105     GetDIBits(hdc, hbmp, 0, 0, NULL, &bmp_info, DIB_RGB_COLORS);
1106
1107     bmp_bits = GdipAlloc(bmp_info.bmiHeader.biSizeImage);
1108
1109     if (bmp_bits)
1110         GetDIBits(hdc, hbmp, 0, abs(bmp_info.bmiHeader.biHeight), bmp_bits, &bmp_info, DIB_RGB_COLORS);
1111
1112     if (!bm_is_selected) {
1113         SelectObject(hdc, old_hbmp);
1114         DeleteDC(hdc);
1115     }
1116
1117     if (!bmp_bits)
1118         return OutOfMemory;
1119
1120     stat = encode_image(bmp_bits, &bmp_info, &output, &output_size);
1121     if (stat == Ok)
1122         IStream_Write(stream, output, output_size, &dummy);
1123
1124     GdipFree(output);
1125     GdipFree(bmp_bits);
1126
1127     return stat;
1128 }
1129
1130 /*****************************************************************************
1131  * GdipSetImagePalette [GDIPLUS.@]
1132  */
1133 GpStatus WINGDIPAPI GdipSetImagePalette(GpImage *image,
1134     GDIPCONST ColorPalette *palette)
1135 {
1136     static int calls;
1137
1138     if(!image || !palette)
1139         return InvalidParameter;
1140
1141     if(!(calls++))
1142         FIXME("not implemented\n");
1143
1144     return NotImplemented;
1145 }
1146
1147 /*************************************************************************
1148  * Encoders -
1149  *   Structures that represent which formats we support for encoding.
1150  */
1151
1152 /* ImageCodecInfo creation routines taken from libgdiplus */
1153 static const WCHAR bmp_codecname[] = {'B', 'u', 'i','l', 't', '-','i', 'n', ' ', 'B', 'M', 'P', 0}; /* Built-in BMP */
1154 static const WCHAR bmp_extension[] = {'*','.','B', 'M', 'P',';', '*','.', 'D','I', 'B',';', '*','.', 'R', 'L', 'E',0}; /* *.BMP;*.DIB;*.RLE */
1155 static const WCHAR bmp_mimetype[] = {'i', 'm', 'a','g', 'e', '/', 'b', 'm', 'p', 0}; /* image/bmp */
1156 static const WCHAR bmp_format[] = {'B', 'M', 'P', 0}; /* BMP */
1157 static const BYTE bmp_sig_pattern[] = { 0x42, 0x4D };
1158 static const BYTE bmp_sig_mask[] = { 0xFF, 0xFF };
1159
1160 static const ImageCodecInfo codecs[NUM_ENCODERS_SUPPORTED] =
1161     {
1162         { /* BMP */
1163             /* Clsid */              { 0x557cf400, 0x1a04, 0x11d3, { 0x9a, 0x73, 0x0, 0x0, 0xf8, 0x1e, 0xf3, 0x2e } },
1164             /* FormatID */           { 0xb96b3cabU, 0x0728U, 0x11d3U, {0x9d, 0x7b, 0x00, 0x00, 0xf8, 0x1e, 0xf3, 0x2e} },
1165             /* CodecName */          bmp_codecname,
1166             /* DllName */            NULL,
1167             /* FormatDescription */  bmp_format,
1168             /* FilenameExtension */  bmp_extension,
1169             /* MimeType */           bmp_mimetype,
1170             /* Flags */              ImageCodecFlagsEncoder | ImageCodecFlagsDecoder | ImageCodecFlagsSupportBitmap | ImageCodecFlagsBuiltin,
1171             /* Version */            1,
1172             /* SigCount */           1,
1173             /* SigSize */            2,
1174             /* SigPattern */         bmp_sig_pattern,
1175             /* SigMask */            bmp_sig_mask,
1176         },
1177     };
1178
1179 /*****************************************************************************
1180  * GdipGetImageEncodersSize [GDIPLUS.@]
1181  */
1182 GpStatus WINGDIPAPI GdipGetImageEncodersSize(UINT *numEncoders, UINT *size)
1183 {
1184     if (!numEncoders || !size)
1185         return InvalidParameter;
1186
1187     *numEncoders = NUM_ENCODERS_SUPPORTED;
1188     *size = sizeof (codecs);
1189
1190     return Ok;
1191 }
1192
1193 /*****************************************************************************
1194  * GdipGetImageEncoders [GDIPLUS.@]
1195  */
1196 GpStatus WINGDIPAPI GdipGetImageEncoders(UINT numEncoders, UINT size, ImageCodecInfo *encoders)
1197 {
1198     if (!encoders ||
1199         (numEncoders != NUM_ENCODERS_SUPPORTED) ||
1200         (size != sizeof (codecs)))
1201         return GenericError;
1202
1203     memcpy(encoders, codecs, sizeof (codecs));
1204
1205     return Ok;
1206 }
1207
1208 /*****************************************************************************
1209  * GdipCreateBitmapFromHBITMAP [GDIPLUS.@]
1210  */
1211 GpStatus WINGDIPAPI GdipCreateBitmapFromHBITMAP(HBITMAP hbm, HPALETTE hpal, GpBitmap** bitmap)
1212 {
1213     BITMAP bm;
1214     GpStatus retval;
1215     PixelFormat format;
1216
1217     if(!hbm || !bitmap)
1218         return InvalidParameter;
1219
1220     /* TODO: Support for device-dependent bitmaps */
1221     if(hpal){
1222         FIXME("no support for device-dependent bitmaps\n");
1223         return NotImplemented;
1224     }
1225
1226     if (GetObjectA(hbm, sizeof(bm), &bm) != sizeof(bm))
1227             return InvalidParameter;
1228
1229     /* TODO: Figure out the correct format for 16, 32, 64 bpp */
1230     switch(bm.bmBitsPixel) {
1231         case 1:
1232             format = PixelFormat1bppIndexed;
1233             break;
1234         case 4:
1235             format = PixelFormat4bppIndexed;
1236             break;
1237         case 8:
1238             format = PixelFormat8bppIndexed;
1239             break;
1240         case 24:
1241             format = PixelFormat24bppRGB;
1242             break;
1243         case 48:
1244             format = PixelFormat48bppRGB;
1245             break;
1246         default:
1247             FIXME("don't know how to handle %d bpp\n", bm.bmBitsPixel);
1248             return InvalidParameter;
1249     }
1250
1251     retval = GdipCreateBitmapFromScan0(bm.bmWidth, bm.bmHeight, bm.bmWidthBytes,
1252         format, bm.bmBits, bitmap);
1253
1254     return retval;
1255 }
1256
1257 /*****************************************************************************
1258  * GdipSetEffectParameters [GDIPLUS.@]
1259  */
1260 GpStatus WINGDIPAPI GdipSetEffectParameters(CGpEffect *effect,
1261     const VOID *params, const UINT size)
1262 {
1263     static int calls;
1264
1265     if(!(calls++))
1266         FIXME("not implemented\n");
1267
1268     return NotImplemented;
1269 }
1270
1271 /*****************************************************************************
1272  * GdipGetImageFlags [GDIPLUS.@]
1273  */
1274 GpStatus WINGDIPAPI GdipGetImageFlags(GpImage *image, UINT *flags)
1275 {
1276     if(!image || !flags)
1277         return InvalidParameter;
1278
1279     *flags = image->flags;
1280
1281     return Ok;
1282 }