| // ========================================================== |
| // FreeImage implementation |
| // |
| // Design and implementation by |
| // - Floris van den Berg (flvdberg@wxs.nl) |
| // - Hervé Drolon (drolon@infonie.fr) |
| // - Detlev Vendt (detlev.vendt@brillit.de) |
| // - Petr Supina (psup@centrum.cz) |
| // - Carsten Klein (c.klein@datagis.com) |
| // |
| // This file is part of FreeImage 3 |
| // |
| // COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY |
| // OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES |
| // THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE |
| // OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED |
| // CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT |
| // THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY |
| // SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL |
| // PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER |
| // THIS DISCLAIMER. |
| // |
| // Use at your own risk! |
| // ========================================================== |
| |
| #ifdef _MSC_VER |
| #pragma warning (disable : 4786) // identifier was truncated to 'number' characters |
| #endif |
| |
| #include <stdlib.h> |
| #if defined(_WIN32) || defined(_WIN64) || defined(__MINGW32__) |
| #include <malloc.h> |
| #endif // _WIN32 || _WIN64 || __MINGW32__ |
| |
| #include "FreeImage.h" |
| #include "FreeImageIO.h" |
| #include "Utilities.h" |
| |
| #include "../Metadata/FreeImageTag.h" |
| |
| // ---------------------------------------------------------- |
| // Metadata definitions |
| // ---------------------------------------------------------- |
| |
| // helper for map<key, value> where value is a pointer to a FreeImage tag |
| typedef std::map<std::string, FITAG*> TAGMAP; |
| |
| // helper for map<FREE_IMAGE_MDMODEL, TAGMAP*> |
| typedef std::map<int, TAGMAP*> METADATAMAP; |
| |
| // helper for metadata iterator |
| FI_STRUCT (METADATAHEADER) { |
| long pos; // current position when iterating the map |
| TAGMAP *tagmap; // pointer to the tag map |
| }; |
| |
| // ---------------------------------------------------------- |
| // FIBITMAP definition |
| // ---------------------------------------------------------- |
| |
| FI_STRUCT (FREEIMAGEHEADER) { |
| FREE_IMAGE_TYPE type; // data type - bitmap, array of long, double, complex, etc |
| |
| unsigned red_mask; // bit layout of the red components |
| unsigned green_mask; // bit layout of the green components |
| unsigned blue_mask; // bit layout of the blue components |
| |
| RGBQUAD bkgnd_color; // background color used for RGB transparency |
| |
| BOOL transparent; // why another table? for easy transparency table retrieval! |
| int transparency_count; // transparency could be stored in the palette, which is better |
| BYTE transparent_table[256]; // overall, but it requires quite some changes and it will render |
| // FreeImage_GetTransparencyTable obsolete in its current form; |
| FIICCPROFILE iccProfile; // space to hold ICC profile |
| |
| METADATAMAP *metadata; // contains a list of metadata models attached to the bitmap |
| |
| //BYTE filler[1]; // fill to 32-bit alignment |
| }; |
| |
| // ---------------------------------------------------------- |
| // Memory allocation on a specified alignment boundary |
| // ---------------------------------------------------------- |
| |
| #if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__) |
| |
| void* FreeImage_Aligned_Malloc(size_t amount, size_t alignment) { |
| assert(alignment == FIBITMAP_ALIGNMENT); |
| return _aligned_malloc(amount, alignment); |
| } |
| |
| void FreeImage_Aligned_Free(void* mem) { |
| _aligned_free(mem); |
| } |
| |
| #elif defined (__MINGW32__) |
| |
| void* FreeImage_Aligned_Malloc(size_t amount, size_t alignment) { |
| assert(alignment == FIBITMAP_ALIGNMENT); |
| return __mingw_aligned_malloc (amount, alignment); |
| } |
| |
| void FreeImage_Aligned_Free(void* mem) { |
| __mingw_aligned_free (mem); |
| } |
| |
| #else |
| |
| void* FreeImage_Aligned_Malloc(size_t amount, size_t alignment) { |
| assert(alignment == FIBITMAP_ALIGNMENT); |
| /* |
| In some rare situations, the malloc routines can return misaligned memory. |
| The routine FreeImage_Aligned_Malloc allocates a bit more memory to do |
| aligned writes. Normally, it *should* allocate "alignment" extra memory and then writes |
| one dword back the true pointer. But if the memory manager returns a |
| misaligned block that is less than a dword from the next alignment, |
| then the writing back one dword will corrupt memory. |
| |
| For example, suppose that alignment is 16 and malloc returns the address 0xFFFF. |
| |
| 16 - 0xFFFF % 16 + 0xFFFF = 16 - 15 + 0xFFFF = 0x10000. |
| |
| Now, you subtract one dword from that and write and that will corrupt memory. |
| |
| That's why the code below allocates *two* alignments instead of one. |
| */ |
| void* mem_real = malloc(amount + 2 * alignment); |
| if(!mem_real) return NULL; |
| char* mem_align = (char*)((unsigned long)(2 * alignment - (unsigned long)mem_real % (unsigned long)alignment) + (unsigned long)mem_real); |
| *((long*)mem_align - 1) = (long)mem_real; |
| return mem_align; |
| } |
| |
| void FreeImage_Aligned_Free(void* mem) { |
| free((void*)*((long*)mem - 1)); |
| } |
| |
| #endif // _WIN32 || _WIN64 |
| |
| // ---------------------------------------------------------- |
| // DIB information functions |
| // ---------------------------------------------------------- |
| |
| /** |
| Calculate the size of a FreeImage image. |
| Align the palette and the pixels on a FIBITMAP_ALIGNMENT bytes alignment boundary. |
| */ |
| static unsigned |
| FreeImage_GetImageSize(int width, int height, int bpp) { |
| unsigned dib_size = sizeof(FREEIMAGEHEADER); |
| dib_size += (dib_size % FIBITMAP_ALIGNMENT ? FIBITMAP_ALIGNMENT - dib_size % FIBITMAP_ALIGNMENT : 0); |
| dib_size += FIBITMAP_ALIGNMENT - sizeof(BITMAPINFOHEADER) % FIBITMAP_ALIGNMENT; |
| dib_size += sizeof(BITMAPINFOHEADER); |
| // palette is aligned on a 16 bytes boundary |
| dib_size += sizeof(RGBQUAD) * CalculateUsedPaletteEntries(bpp); |
| dib_size += (dib_size % FIBITMAP_ALIGNMENT ? FIBITMAP_ALIGNMENT - dib_size % FIBITMAP_ALIGNMENT : 0); |
| // pixels are aligned on a 16 bytes boundary |
| dib_size += CalculatePitch(CalculateLine(width, bpp)) * height; |
| |
| return dib_size; |
| } |
| |
| FIBITMAP * DLL_CALLCONV |
| FreeImage_Allocate(int width, int height, int bpp, unsigned red_mask, unsigned green_mask, unsigned blue_mask) { |
| return FreeImage_AllocateT(FIT_BITMAP, width, height, bpp, red_mask, green_mask, blue_mask); |
| } |
| |
| FIBITMAP * DLL_CALLCONV |
| FreeImage_AllocateT(FREE_IMAGE_TYPE type, int width, int height, int bpp, unsigned red_mask, unsigned green_mask, unsigned blue_mask) { |
| FIBITMAP *bitmap = (FIBITMAP *)malloc(sizeof(FIBITMAP)); |
| |
| if (bitmap != NULL) { |
| height = abs(height); |
| |
| // check pixel bit depth |
| switch(type) { |
| case FIT_BITMAP: |
| switch(bpp) { |
| case 1: |
| case 4: |
| case 8: |
| case 16: |
| case 24: |
| case 32: |
| break; |
| default: |
| bpp = 8; |
| break; |
| } |
| break; |
| case FIT_UINT16: |
| bpp = 8 * sizeof(unsigned short); |
| break; |
| case FIT_INT16: |
| bpp = 8 * sizeof(short); |
| break; |
| case FIT_UINT32: |
| bpp = 8 * sizeof(unsigned long); |
| break; |
| case FIT_INT32: |
| bpp = 8 * sizeof(long); |
| break; |
| case FIT_FLOAT: |
| bpp = 8 * sizeof(float); |
| break; |
| case FIT_DOUBLE: |
| bpp = 8 * sizeof(double); |
| break; |
| case FIT_COMPLEX: |
| bpp = 8 * sizeof(FICOMPLEX); |
| break; |
| case FIT_RGB16: |
| bpp = 8 * sizeof(FIRGB16); |
| break; |
| case FIT_RGBA16: |
| bpp = 8 * sizeof(FIRGBA16); |
| break; |
| case FIT_RGBF: |
| bpp = 8 * sizeof(FIRGBF); |
| break; |
| case FIT_RGBAF: |
| bpp = 8 * sizeof(FIRGBAF); |
| break; |
| default: |
| free(bitmap); |
| return NULL; |
| } |
| |
| // calculate the size of a FreeImage image |
| // align the palette and the pixels on a FIBITMAP_ALIGNMENT bytes alignment boundary |
| // palette is aligned on a 16 bytes boundary |
| // pixels are aligned on a 16 bytes boundary |
| |
| unsigned dib_size = FreeImage_GetImageSize(width, height, bpp); |
| |
| bitmap->data = (BYTE *)FreeImage_Aligned_Malloc(dib_size * sizeof(BYTE), FIBITMAP_ALIGNMENT); |
| |
| if (bitmap->data != NULL) { |
| memset(bitmap->data, 0, dib_size); |
| |
| // write out the FREEIMAGEHEADER |
| |
| FREEIMAGEHEADER *fih = (FREEIMAGEHEADER *)bitmap->data; |
| fih->type = type; |
| |
| fih->red_mask = red_mask; |
| fih->green_mask = green_mask; |
| fih->blue_mask = blue_mask; |
| |
| memset(&fih->bkgnd_color, 0, sizeof(RGBQUAD)); |
| |
| fih->transparent = FALSE; |
| fih->transparency_count = 0; |
| memset(fih->transparent_table, 0xff, 256); |
| |
| // initialize FIICCPROFILE link |
| |
| FIICCPROFILE *iccProfile = FreeImage_GetICCProfile(bitmap); |
| iccProfile->size = 0; |
| iccProfile->data = 0; |
| iccProfile->flags = 0; |
| |
| // initialize metadata models list |
| |
| fih->metadata = new METADATAMAP; |
| |
| // write out the BITMAPINFOHEADER |
| |
| BITMAPINFOHEADER *bih = FreeImage_GetInfoHeader(bitmap); |
| bih->biSize = sizeof(BITMAPINFOHEADER); |
| bih->biWidth = width; |
| bih->biHeight = height; |
| bih->biPlanes = 1; |
| bih->biCompression = 0; |
| bih->biBitCount = (WORD)bpp; |
| bih->biClrUsed = CalculateUsedPaletteEntries(bpp); |
| bih->biClrImportant = bih->biClrUsed; |
| bih->biXPelsPerMeter = 2835; // 72 dpi |
| bih->biYPelsPerMeter = 2835; // 72 dpi |
| |
| return bitmap; |
| } |
| |
| free(bitmap); |
| } |
| |
| return NULL; |
| } |
| |
| void DLL_CALLCONV |
| FreeImage_Unload(FIBITMAP *dib) { |
| if (NULL != dib) { |
| if (NULL != dib->data) { |
| // delete possible icc profile ... |
| if (FreeImage_GetICCProfile(dib)->data) |
| free(FreeImage_GetICCProfile(dib)->data); |
| |
| // delete metadata models |
| METADATAMAP *metadata = ((FREEIMAGEHEADER *)dib->data)->metadata; |
| |
| for(METADATAMAP::iterator i = (*metadata).begin(); i != (*metadata).end(); i++) { |
| TAGMAP *tagmap = (*i).second; |
| |
| if(tagmap) { |
| for(TAGMAP::iterator j = tagmap->begin(); j != tagmap->end(); j++) { |
| FITAG *tag = (*j).second; |
| FreeImage_DeleteTag(tag); |
| } |
| |
| delete tagmap; |
| } |
| } |
| |
| delete metadata; |
| |
| // delete bitmap ... |
| FreeImage_Aligned_Free(dib->data); |
| } |
| free(dib); // ... and the wrapper |
| } |
| } |
| |
| // ---------------------------------------------------------- |
| |
| FIBITMAP * DLL_CALLCONV |
| FreeImage_Clone(FIBITMAP *dib) { |
| if(!dib) return NULL; |
| |
| unsigned width = FreeImage_GetWidth(dib); |
| unsigned height = FreeImage_GetHeight(dib); |
| unsigned bpp = FreeImage_GetBPP(dib); |
| |
| // allocate a new dib |
| FIBITMAP *new_dib = FreeImage_AllocateT(FreeImage_GetImageType(dib), width, height, bpp, |
| FreeImage_GetRedMask(dib), FreeImage_GetGreenMask(dib), FreeImage_GetBlueMask(dib)); |
| |
| if (new_dib) { |
| // save ICC profile links |
| FIICCPROFILE *src_iccProfile = FreeImage_GetICCProfile(dib); |
| FIICCPROFILE *dst_iccProfile = FreeImage_GetICCProfile(new_dib); |
| |
| // save metadata links |
| METADATAMAP *src_metadata = ((FREEIMAGEHEADER *)dib->data)->metadata; |
| METADATAMAP *dst_metadata = ((FREEIMAGEHEADER *)new_dib->data)->metadata; |
| |
| // calculate the size of a FreeImage image |
| // align the palette and the pixels on a FIBITMAP_ALIGNMENT bytes alignment boundary |
| // palette is aligned on a 16 bytes boundary |
| // pixels are aligned on a 16 bytes boundary |
| |
| unsigned dib_size = FreeImage_GetImageSize(width, height, bpp); |
| |
| // copy the bitmap + internal pointers (remember to restore new_dib internal pointers later) |
| memcpy(new_dib->data, dib->data, dib_size); |
| |
| // reset ICC profile link for new_dib |
| memset(dst_iccProfile, 0, sizeof(FIICCPROFILE)); |
| |
| // restore metadata link for new_dib |
| ((FREEIMAGEHEADER *)new_dib->data)->metadata = dst_metadata; |
| |
| // copy possible ICC profile |
| FreeImage_CreateICCProfile(new_dib, src_iccProfile->data, src_iccProfile->size); |
| dst_iccProfile->flags = src_iccProfile->flags; |
| |
| // copy metadata models |
| for(METADATAMAP::iterator i = (*src_metadata).begin(); i != (*src_metadata).end(); i++) { |
| int model = (*i).first; |
| TAGMAP *src_tagmap = (*i).second; |
| |
| if(src_tagmap) { |
| // create a metadata model |
| TAGMAP *dst_tagmap = new TAGMAP(); |
| |
| // fill the model |
| for(TAGMAP::iterator j = src_tagmap->begin(); j != src_tagmap->end(); j++) { |
| std::string dst_key = (*j).first; |
| FITAG *dst_tag = FreeImage_CloneTag( (*j).second ); |
| |
| // assign key and tag value |
| (*dst_tagmap)[dst_key] = dst_tag; |
| } |
| |
| // assign model and tagmap |
| (*dst_metadata)[model] = dst_tagmap; |
| } |
| } |
| |
| return new_dib; |
| } |
| |
| return NULL; |
| } |
| |
| // ---------------------------------------------------------- |
| |
| FREE_IMAGE_COLOR_TYPE DLL_CALLCONV |
| FreeImage_GetColorType(FIBITMAP *dib) { |
| RGBQUAD *rgb; |
| |
| const FREE_IMAGE_TYPE image_type = FreeImage_GetImageType(dib); |
| |
| // special bitmap type |
| if(image_type != FIT_BITMAP) { |
| switch(image_type) { |
| case FIT_RGB16: |
| case FIT_RGBF: |
| return FIC_RGB; |
| case FIT_RGBA16: |
| case FIT_RGBAF: |
| return FIC_RGBALPHA; |
| } |
| |
| return FIC_MINISBLACK; |
| } |
| |
| // standard image type |
| switch (FreeImage_GetBPP(dib)) { |
| case 1: |
| { |
| rgb = FreeImage_GetPalette(dib); |
| |
| if ((rgb->rgbRed == 0) && (rgb->rgbGreen == 0) && (rgb->rgbBlue == 0)) { |
| rgb++; |
| |
| if ((rgb->rgbRed == 255) && (rgb->rgbGreen == 255) && (rgb->rgbBlue == 255)) |
| return FIC_MINISBLACK; |
| } |
| |
| if ((rgb->rgbRed == 255) && (rgb->rgbGreen == 255) && (rgb->rgbBlue == 255)) { |
| rgb++; |
| |
| if ((rgb->rgbRed == 0) && (rgb->rgbGreen == 0) && (rgb->rgbBlue == 0)) |
| return FIC_MINISWHITE; |
| } |
| |
| return FIC_PALETTE; |
| } |
| |
| case 4: |
| case 8: // Check if the DIB has a color or a greyscale palette |
| { |
| int ncolors = FreeImage_GetColorsUsed(dib); |
| int minisblack = 1; |
| rgb = FreeImage_GetPalette(dib); |
| |
| for (int i = 0; i < ncolors; i++) { |
| if ((rgb->rgbRed != rgb->rgbGreen) || (rgb->rgbRed != rgb->rgbBlue)) |
| return FIC_PALETTE; |
| |
| // The DIB has a color palette if the greyscale isn't a linear ramp |
| // Take care of reversed grey images |
| if (rgb->rgbRed != i) { |
| if ((ncolors-i-1) != rgb->rgbRed) |
| return FIC_PALETTE; |
| else |
| minisblack = 0; |
| } |
| |
| rgb++; |
| } |
| |
| return minisblack ? FIC_MINISBLACK : FIC_MINISWHITE; |
| } |
| |
| case 16: |
| case 24: |
| return FIC_RGB; |
| |
| case 32: |
| { |
| if (FreeImage_GetICCProfile(dib)->flags & FIICC_COLOR_IS_CMYK) |
| return FIC_CMYK; |
| |
| for (unsigned y = 0; y < FreeImage_GetHeight(dib); y++) { |
| rgb = (RGBQUAD *)FreeImage_GetScanLine(dib, y); |
| |
| for (unsigned x = 0; x < FreeImage_GetWidth(dib); x++) |
| if (rgb[x].rgbReserved != 0xFF) |
| return FIC_RGBALPHA; |
| } |
| |
| return FIC_RGB; |
| } |
| |
| default : |
| return FIC_MINISBLACK; |
| } |
| } |
| |
| // ---------------------------------------------------------- |
| |
| FREE_IMAGE_TYPE DLL_CALLCONV |
| FreeImage_GetImageType(FIBITMAP *dib) { |
| return (dib != NULL) ? ((FREEIMAGEHEADER *)dib->data)->type : FIT_UNKNOWN; |
| } |
| |
| // ---------------------------------------------------------- |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetRedMask(FIBITMAP *dib) { |
| return dib ? ((FREEIMAGEHEADER *)dib->data)->red_mask : 0; |
| } |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetGreenMask(FIBITMAP *dib) { |
| return dib ? ((FREEIMAGEHEADER *)dib->data)->green_mask : 0; |
| } |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetBlueMask(FIBITMAP *dib) { |
| return dib ? ((FREEIMAGEHEADER *)dib->data)->blue_mask : 0; |
| } |
| |
| // ---------------------------------------------------------- |
| |
| BOOL DLL_CALLCONV |
| FreeImage_HasBackgroundColor(FIBITMAP *dib) { |
| if(dib) { |
| RGBQUAD *bkgnd_color = &((FREEIMAGEHEADER *)dib->data)->bkgnd_color; |
| return (bkgnd_color->rgbReserved != 0) ? TRUE : FALSE; |
| } |
| return FALSE; |
| } |
| |
| BOOL DLL_CALLCONV |
| FreeImage_GetBackgroundColor(FIBITMAP *dib, RGBQUAD *bkcolor) { |
| if(dib && bkcolor) { |
| if(FreeImage_HasBackgroundColor(dib)) { |
| // get the background color |
| RGBQUAD *bkgnd_color = &((FREEIMAGEHEADER *)dib->data)->bkgnd_color; |
| memcpy(bkcolor, bkgnd_color, sizeof(RGBQUAD)); |
| // get the background index |
| if(FreeImage_GetBPP(dib) == 8) { |
| RGBQUAD *pal = FreeImage_GetPalette(dib); |
| for(unsigned i = 0; i < FreeImage_GetColorsUsed(dib); i++) { |
| if(bkgnd_color->rgbRed == pal[i].rgbRed) { |
| if(bkgnd_color->rgbGreen == pal[i].rgbGreen) { |
| if(bkgnd_color->rgbBlue == pal[i].rgbBlue) { |
| bkcolor->rgbReserved = (BYTE)i; |
| return TRUE; |
| } |
| } |
| } |
| } |
| } |
| |
| bkcolor->rgbReserved = 0; |
| |
| return TRUE; |
| } |
| } |
| |
| return FALSE; |
| } |
| |
| BOOL DLL_CALLCONV |
| FreeImage_SetBackgroundColor(FIBITMAP *dib, RGBQUAD *bkcolor) { |
| if(dib) { |
| RGBQUAD *bkgnd_color = &((FREEIMAGEHEADER *)dib->data)->bkgnd_color; |
| if(bkcolor) { |
| // set the background color |
| memcpy(bkgnd_color, bkcolor, sizeof(RGBQUAD)); |
| // enable the file background color |
| bkgnd_color->rgbReserved = 1; |
| } else { |
| // clear and disable the file background color |
| memset(bkgnd_color, 0, sizeof(RGBQUAD)); |
| } |
| return TRUE; |
| } |
| |
| return FALSE; |
| } |
| |
| // ---------------------------------------------------------- |
| |
| BOOL DLL_CALLCONV |
| FreeImage_IsTransparent(FIBITMAP *dib) { |
| if(dib) { |
| if(FreeImage_GetBPP(dib) == 32) { |
| if(FreeImage_GetColorType(dib) == FIC_RGBALPHA) { |
| return TRUE; |
| } |
| } else { |
| return ((FREEIMAGEHEADER *)dib->data)->transparent ? TRUE : FALSE; |
| } |
| } |
| return FALSE; |
| } |
| |
| BYTE * DLL_CALLCONV |
| FreeImage_GetTransparencyTable(FIBITMAP *dib) { |
| return dib ? ((FREEIMAGEHEADER *)dib->data)->transparent_table : NULL; |
| } |
| |
| void DLL_CALLCONV |
| FreeImage_SetTransparent(FIBITMAP *dib, BOOL enabled) { |
| if (dib) { |
| if ((FreeImage_GetBPP(dib) <= 8) || (FreeImage_GetBPP(dib) == 32)) { |
| ((FREEIMAGEHEADER *)dib->data)->transparent = enabled; |
| } else { |
| ((FREEIMAGEHEADER *)dib->data)->transparent = FALSE; |
| } |
| } |
| } |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetTransparencyCount(FIBITMAP *dib) { |
| return dib ? ((FREEIMAGEHEADER *)dib->data)->transparency_count : 0; |
| } |
| |
| void DLL_CALLCONV |
| FreeImage_SetTransparencyTable(FIBITMAP *dib, BYTE *table, int count) { |
| if (dib) { |
| if (FreeImage_GetBPP(dib) <= 8) { |
| ((FREEIMAGEHEADER *)dib->data)->transparent = TRUE; |
| ((FREEIMAGEHEADER *)dib->data)->transparency_count = count; |
| |
| if (table) { |
| memcpy(((FREEIMAGEHEADER *)dib->data)->transparent_table, table, count); |
| } else { |
| memset(((FREEIMAGEHEADER *)dib->data)->transparent_table, 0xff, count); |
| } |
| } |
| } |
| } |
| |
| /** @brief Sets the index of the palette entry to be used as transparent color |
| for the image specified. Does nothing on high color images. |
| |
| This method sets the index of the palette entry to be used as single transparent |
| color for the image specified. This works on palletised images only and does |
| nothing for high color images. |
| |
| Although it is possible for palletised images to have more than one transparent |
| color, this method sets the palette entry specified as the single transparent |
| color for the image. All other colors will be set to be non-transparent by this |
| method. |
| |
| As with FreeImage_SetTransparencyTable(), this method also sets the image's |
| transparency property to TRUE (as it is set and obtained by |
| FreeImage_SetTransparent() and FreeImage_IsTransparent() respectively) for |
| palletised images. |
| |
| @param dib Input image, whose transparent color is to be set. |
| @param index The index of the palette entry to be set as transparent color. |
| */ |
| void DLL_CALLCONV |
| FreeImage_SetTransparentIndex(FIBITMAP *dib, int index) { |
| if (dib) { |
| int count = FreeImage_GetColorsUsed(dib); |
| if (count) { |
| BYTE *new_tt = (BYTE *)malloc(count * sizeof(BYTE)); |
| memset(new_tt, 0xFF, count); |
| if ((index >= 0) && (index < count)) { |
| new_tt[index] = 0x00; |
| } |
| FreeImage_SetTransparencyTable(dib, new_tt, count); |
| free(new_tt); |
| } |
| } |
| } |
| |
| /** @brief Returns the palette entry used as transparent color for the image |
| specified. Works for palletised images only and returns -1 for high color |
| images or if the image has no color set to be transparent. |
| |
| Although it is possible for palletised images to have more than one transparent |
| color, this function always returns the index of the first palette entry, set |
| to be transparent. |
| |
| @param dib Input image, whose transparent color is to be returned. |
| @return Returns the index of the palette entry used as transparent color for |
| the image specified or -1 if there is no transparent color found (e.g. the image |
| is a high color image). |
| */ |
| int DLL_CALLCONV |
| FreeImage_GetTransparentIndex(FIBITMAP *dib) { |
| int count = FreeImage_GetTransparencyCount(dib); |
| BYTE *tt = FreeImage_GetTransparencyTable(dib); |
| for (int i = 0; i < count; i++) { |
| if (tt[i] == 0) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| // ---------------------------------------------------------- |
| |
| FIICCPROFILE * DLL_CALLCONV |
| FreeImage_GetICCProfile(FIBITMAP *dib) { |
| FIICCPROFILE *profile = (dib) ? (FIICCPROFILE *)&((FREEIMAGEHEADER *)dib->data)->iccProfile : NULL; |
| return profile; |
| } |
| |
| FIICCPROFILE * DLL_CALLCONV |
| FreeImage_CreateICCProfile(FIBITMAP *dib, void *data, long size) { |
| // clear the profile but preserve profile->flags |
| FreeImage_DestroyICCProfile(dib); |
| // create the new profile |
| FIICCPROFILE *profile = FreeImage_GetICCProfile(dib); |
| if(size && profile) { |
| profile->data = malloc(size); |
| if(profile->data) { |
| memcpy(profile->data, data, profile->size = size); |
| } |
| } |
| return profile; |
| } |
| |
| void DLL_CALLCONV |
| FreeImage_DestroyICCProfile(FIBITMAP *dib) { |
| FIICCPROFILE *profile = FreeImage_GetICCProfile(dib); |
| if(profile) { |
| if (profile->data) { |
| free (profile->data); |
| } |
| // clear the profile but preserve profile->flags |
| profile->data = NULL; |
| profile->size = 0; |
| } |
| } |
| |
| // ---------------------------------------------------------- |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetWidth(FIBITMAP *dib) { |
| return dib ? FreeImage_GetInfoHeader(dib)->biWidth : 0; |
| } |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetHeight(FIBITMAP *dib) { |
| return (dib) ? FreeImage_GetInfoHeader(dib)->biHeight : 0; |
| } |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetBPP(FIBITMAP *dib) { |
| return dib ? FreeImage_GetInfoHeader(dib)->biBitCount : 0; |
| } |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetLine(FIBITMAP *dib) { |
| return dib ? ((FreeImage_GetWidth(dib) * FreeImage_GetBPP(dib)) + 7) / 8 : 0; |
| } |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetPitch(FIBITMAP *dib) { |
| return dib ? FreeImage_GetLine(dib) + 3 & ~3 : 0; |
| } |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetColorsUsed(FIBITMAP *dib) { |
| return dib ? FreeImage_GetInfoHeader(dib)->biClrUsed : 0; |
| } |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetDIBSize(FIBITMAP *dib) { |
| return (dib) ? sizeof(BITMAPINFOHEADER) + (FreeImage_GetColorsUsed(dib) * sizeof(RGBQUAD)) + (FreeImage_GetPitch(dib) * FreeImage_GetHeight(dib)) : 0; |
| } |
| |
| RGBQUAD * DLL_CALLCONV |
| FreeImage_GetPalette(FIBITMAP *dib) { |
| return (dib && FreeImage_GetBPP(dib) < 16) ? (RGBQUAD *)(((BYTE *)FreeImage_GetInfoHeader(dib)) + sizeof(BITMAPINFOHEADER)) : NULL; |
| } |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetDotsPerMeterX(FIBITMAP *dib) { |
| return (dib) ? FreeImage_GetInfoHeader(dib)->biXPelsPerMeter : 0; |
| } |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetDotsPerMeterY(FIBITMAP *dib) { |
| return (dib) ? FreeImage_GetInfoHeader(dib)->biYPelsPerMeter : 0; |
| } |
| |
| void DLL_CALLCONV |
| FreeImage_SetDotsPerMeterX(FIBITMAP *dib, unsigned res) { |
| if(dib) { |
| FreeImage_GetInfoHeader(dib)->biXPelsPerMeter = res; |
| } |
| } |
| |
| void DLL_CALLCONV |
| FreeImage_SetDotsPerMeterY(FIBITMAP *dib, unsigned res) { |
| if(dib) { |
| FreeImage_GetInfoHeader(dib)->biYPelsPerMeter = res; |
| } |
| } |
| |
| BITMAPINFOHEADER * DLL_CALLCONV |
| FreeImage_GetInfoHeader(FIBITMAP *dib) { |
| if(!dib) return NULL; |
| size_t lp = (size_t)dib->data + sizeof(FREEIMAGEHEADER); |
| lp += (lp % FIBITMAP_ALIGNMENT ? FIBITMAP_ALIGNMENT - lp % FIBITMAP_ALIGNMENT : 0); |
| lp += FIBITMAP_ALIGNMENT - sizeof(BITMAPINFOHEADER) % FIBITMAP_ALIGNMENT; |
| return (BITMAPINFOHEADER *)lp; |
| } |
| |
| BITMAPINFO * DLL_CALLCONV |
| FreeImage_GetInfo(FIBITMAP *dib) { |
| return (BITMAPINFO *)FreeImage_GetInfoHeader(dib); |
| } |
| |
| // ---------------------------------------------------------- |
| // Metadata routines |
| // ---------------------------------------------------------- |
| |
| FIMETADATA * DLL_CALLCONV |
| FreeImage_FindFirstMetadata(FREE_IMAGE_MDMODEL model, FIBITMAP *dib, FITAG **tag) { |
| if(!dib) |
| return NULL; |
| |
| // get the metadata model |
| METADATAMAP *metadata = ((FREEIMAGEHEADER *)dib->data)->metadata; |
| TAGMAP *tagmap = NULL; |
| if( (*metadata).find(model) != (*metadata).end() ) { |
| tagmap = (*metadata)[model]; |
| } |
| if(tagmap) { |
| // allocate a handle |
| FIMETADATA *handle = (FIMETADATA *)malloc(sizeof(FIMETADATA)); |
| if(handle) { |
| // calculate the size of a METADATAHEADER |
| int header_size = sizeof(METADATAHEADER); |
| |
| handle->data = (BYTE *)malloc(header_size * sizeof(BYTE)); |
| |
| if(handle->data) { |
| memset(handle->data, 0, header_size * sizeof(BYTE)); |
| |
| // write out the METADATAHEADER |
| METADATAHEADER *mdh = (METADATAHEADER *)handle->data; |
| |
| mdh->pos = 1; |
| mdh->tagmap = tagmap; |
| |
| // get the first element |
| TAGMAP::iterator i = tagmap->begin(); |
| *tag = (*i).second; |
| |
| return handle; |
| } |
| |
| free(handle); |
| } |
| } |
| |
| return NULL; |
| } |
| |
| BOOL DLL_CALLCONV |
| FreeImage_FindNextMetadata(FIMETADATA *mdhandle, FITAG **tag) { |
| if(!mdhandle) |
| return FALSE; |
| |
| METADATAHEADER *mdh = (METADATAHEADER *)mdhandle->data; |
| TAGMAP *tagmap = mdh->tagmap; |
| |
| int current_pos = mdh->pos; |
| int mapsize = (int)tagmap->size(); |
| |
| if(current_pos < mapsize) { |
| // get the tag element at position pos |
| int count = 0; |
| |
| for(TAGMAP::iterator i = tagmap->begin(); i != tagmap->end(); i++) { |
| if(count == current_pos) { |
| *tag = (*i).second; |
| mdh->pos++; |
| break; |
| } |
| count++; |
| } |
| |
| return TRUE; |
| } |
| |
| return FALSE; |
| } |
| |
| void DLL_CALLCONV |
| FreeImage_FindCloseMetadata(FIMETADATA *mdhandle) { |
| if (NULL != mdhandle) { // delete the handle |
| if (NULL != mdhandle->data) { |
| free(mdhandle->data); |
| } |
| free(mdhandle); // ... and the wrapper |
| } |
| } |
| |
| |
| // ---------------------------------------------------------- |
| |
| BOOL DLL_CALLCONV |
| FreeImage_CloneMetadata(FIBITMAP *dst, FIBITMAP *src) { |
| if(!src || !dst) return FALSE; |
| |
| // get metadata links |
| METADATAMAP *src_metadata = ((FREEIMAGEHEADER *)src->data)->metadata; |
| METADATAMAP *dst_metadata = ((FREEIMAGEHEADER *)dst->data)->metadata; |
| |
| // copy metadata models, *except* the FIMD_ANIMATION model |
| for(METADATAMAP::iterator i = (*src_metadata).begin(); i != (*src_metadata).end(); i++) { |
| int model = (*i).first; |
| if(model == (int)FIMD_ANIMATION) { |
| continue; |
| } |
| TAGMAP *src_tagmap = (*i).second; |
| |
| if(src_tagmap) { |
| if( dst_metadata->find(model) != dst_metadata->end() ) { |
| // destroy dst model |
| FreeImage_SetMetadata((FREE_IMAGE_MDMODEL)model, dst, NULL, NULL); |
| } |
| |
| // create a metadata model |
| TAGMAP *dst_tagmap = new TAGMAP(); |
| |
| // fill the model |
| for(TAGMAP::iterator j = src_tagmap->begin(); j != src_tagmap->end(); j++) { |
| std::string dst_key = (*j).first; |
| FITAG *dst_tag = FreeImage_CloneTag( (*j).second ); |
| |
| // assign key and tag value |
| (*dst_tagmap)[dst_key] = dst_tag; |
| } |
| |
| // assign model and tagmap |
| (*dst_metadata)[model] = dst_tagmap; |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| // ---------------------------------------------------------- |
| |
| BOOL DLL_CALLCONV |
| FreeImage_SetMetadata(FREE_IMAGE_MDMODEL model, FIBITMAP *dib, const char *key, FITAG *tag) { |
| if(!dib) |
| return FALSE; |
| |
| TAGMAP *tagmap = NULL; |
| |
| // get the metadata model |
| METADATAMAP *metadata = ((FREEIMAGEHEADER *)dib->data)->metadata; |
| METADATAMAP::iterator model_iterator = metadata->find(model); |
| if (model_iterator != metadata->end()) { |
| tagmap = model_iterator->second; |
| } |
| |
| if(key != NULL) { |
| |
| if(!tagmap) { |
| // this model, doesn't exist: create it |
| tagmap = new TAGMAP(); |
| (*metadata)[model] = tagmap; |
| } |
| |
| if(tag) { |
| // first check the tag |
| if(FreeImage_GetTagKey(tag) == NULL) { |
| FreeImage_SetTagKey(tag, key); |
| } else if(strcmp(key, FreeImage_GetTagKey(tag)) != 0) { |
| // set the tag key |
| FreeImage_SetTagKey(tag, key); |
| } |
| if(FreeImage_GetTagCount(tag) * FreeImage_TagDataWidth((WORD)FreeImage_GetTagType(tag)) != FreeImage_GetTagLength(tag)) { |
| FreeImage_OutputMessageProc(FIF_UNKNOWN, "Invalid data count for tag '%s'", key); |
| return FALSE; |
| } |
| |
| // fill the tag ID if possible and if it's needed |
| TagLib& tag_lib = TagLib::instance(); |
| switch(model) { |
| case FIMD_IPTC: |
| { |
| int id = tag_lib.getTagID(TagLib::IPTC, key); |
| /* |
| if(id == -1) { |
| FreeImage_OutputMessageProc(FIF_UNKNOWN, "IPTC: Invalid key '%s'", key); |
| } |
| */ |
| FreeImage_SetTagID(tag, (WORD)id); |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| // delete existing tag |
| FITAG *old_tag = (*tagmap)[key]; |
| if(old_tag) { |
| FreeImage_DeleteTag(old_tag); |
| } |
| |
| // create a new tag |
| (*tagmap)[key] = FreeImage_CloneTag(tag); |
| } |
| else { |
| // delete existing tag |
| TAGMAP::iterator i = tagmap->find(key); |
| if(i != tagmap->end()) { |
| FITAG *old_tag = (*i).second; |
| FreeImage_DeleteTag(old_tag); |
| tagmap->erase(key); |
| } |
| } |
| } |
| else { |
| // destroy the metadata model |
| if(tagmap) { |
| for(TAGMAP::iterator i = tagmap->begin(); i != tagmap->end(); i++) { |
| FITAG *tag = (*i).second; |
| FreeImage_DeleteTag(tag); |
| } |
| |
| delete tagmap; |
| metadata->erase(model_iterator); |
| } |
| } |
| |
| return TRUE; |
| } |
| |
| BOOL DLL_CALLCONV |
| FreeImage_GetMetadata(FREE_IMAGE_MDMODEL model, FIBITMAP *dib, const char *key, FITAG **tag) { |
| if(!dib || !key || !tag) |
| return FALSE; |
| |
| TAGMAP *tagmap = NULL; |
| *tag = NULL; |
| |
| // get the metadata model |
| METADATAMAP *metadata = ((FREEIMAGEHEADER *)dib->data)->metadata; |
| if(!(*metadata).empty()) { |
| METADATAMAP::iterator model_iterator = metadata->find(model); |
| if (model_iterator != metadata->end() ) { |
| // this model exists : try to get the requested tag |
| tagmap = model_iterator->second; |
| TAGMAP::iterator tag_iterator = tagmap->find(key); |
| if (tag_iterator != tagmap->end() ) { |
| // get the requested tag |
| *tag = tag_iterator->second; |
| } |
| } |
| } |
| |
| return (*tag != NULL) ? TRUE : FALSE; |
| } |
| |
| // ---------------------------------------------------------- |
| |
| unsigned DLL_CALLCONV |
| FreeImage_GetMetadataCount(FREE_IMAGE_MDMODEL model, FIBITMAP *dib) { |
| if(!dib) |
| return FALSE; |
| |
| TAGMAP *tagmap = NULL; |
| |
| // get the metadata model |
| METADATAMAP *metadata = ((FREEIMAGEHEADER *)dib->data)->metadata; |
| if( (*metadata).find(model) != (*metadata).end() ) { |
| tagmap = (*metadata)[model]; |
| } |
| if(!tagmap) { |
| // this model, doesn't exist: return |
| return 0; |
| } |
| |
| // get the tag count |
| return (unsigned)tagmap->size(); |
| } |
| |
| // ---------------------------------------------------------- |
| |
| |