/src/FreeImage/Source/FreeImage/PluginCUT.cpp
https://bitbucket.org/cabalistic/ogredeps/ · C++ · 240 lines · 151 code · 50 blank · 39 comment · 28 complexity · cafb02db2dfdb001b0e775b93b2ac552 MD5 · raw file
- // ==========================================================
- // CUT Loader
- //
- // Design and implementation by
- // - Floris van den Berg (flvdberg@wxs.nl)
- //
- // 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!
- // ==========================================================
- #include "FreeImage.h"
- #include "Utilities.h"
- // ----------------------------------------------------------
- // Constants + headers
- // ----------------------------------------------------------
- #ifdef _WIN32
- #pragma pack(push, 1)
- #else
- #pragma pack(1)
- #endif
- typedef struct tagCUTHEADER {
- WORD width;
- WORD height;
- LONG dummy;
- } CUTHEADER;
- #ifdef _WIN32
- #pragma pack(pop)
- #else
- #pragma pack()
- #endif
- // ==========================================================
- // Plugin Interface
- // ==========================================================
- static int s_format_id;
- // ==========================================================
- // Plugin Implementation
- // ==========================================================
- static const char * DLL_CALLCONV
- Format() {
- return "CUT";
- }
- static const char * DLL_CALLCONV
- Description() {
- return "Dr. Halo";
- }
- static const char * DLL_CALLCONV
- Extension() {
- return "cut";
- }
- static const char * DLL_CALLCONV
- RegExpr() {
- return NULL;
- }
- static const char * DLL_CALLCONV
- MimeType() {
- return "image/x-cut";
- }
- static BOOL DLL_CALLCONV
- Validate(FreeImageIO *io, fi_handle handle) {
- return FALSE;
- }
- static BOOL DLL_CALLCONV
- SupportsExportDepth(int depth) {
- return FALSE;
- }
- static BOOL DLL_CALLCONV
- SupportsExportType(FREE_IMAGE_TYPE type) {
- return FALSE;
- }
- static BOOL DLL_CALLCONV
- SupportsNoPixels() {
- return TRUE;
- }
- // ----------------------------------------------------------
- static FIBITMAP * DLL_CALLCONV
- Load(FreeImageIO *io, fi_handle handle, int page, int flags, void *data) {
- FIBITMAP *dib = NULL;
- if(!handle) {
- return NULL;
- }
- try {
- CUTHEADER header;
- BOOL header_only = (flags & FIF_LOAD_NOPIXELS) == FIF_LOAD_NOPIXELS;
- // read the cut header
- if(io->read_proc(&header, 1, sizeof(CUTHEADER), handle) != sizeof(CUTHEADER)) {
- throw FI_MSG_ERROR_PARSING;
- }
- #ifdef FREEIMAGE_BIGENDIAN
- SwapShort((WORD *)&header.width);
- SwapShort((WORD *)&header.height);
- #endif
- if ((header.width == 0) || (header.height == 0)) {
- return NULL;
- }
- // allocate a new bitmap
- dib = FreeImage_AllocateHeader(header_only, header.width, header.height, 8);
- if (dib == NULL) {
- throw FI_MSG_ERROR_DIB_MEMORY;
- }
- // stuff it with a palette
- RGBQUAD *palette = FreeImage_GetPalette(dib);
- for (int j = 0; j < 256; ++j) {
- palette[j].rgbBlue = palette[j].rgbGreen = palette[j].rgbRed = (BYTE)j;
- }
-
- if(header_only) {
- // header only mode
- return dib;
- }
- // unpack the RLE bitmap bits
- BYTE *bits = FreeImage_GetScanLine(dib, header.height - 1);
- unsigned i = 0, k = 0;
- unsigned pitch = FreeImage_GetPitch(dib);
- unsigned size = header.width * header.height;
- BYTE count = 0, run = 0;
- while (i < size) {
- if(io->read_proc(&count, 1, sizeof(BYTE), handle) != 1) {
- throw FI_MSG_ERROR_PARSING;
- }
- if (count == 0) {
- k = 0;
- bits -= pitch;
- // paint shop pro adds two useless bytes here...
- io->read_proc(&count, 1, sizeof(BYTE), handle);
- io->read_proc(&count, 1, sizeof(BYTE), handle);
- continue;
- }
- if (count & 0x80) {
- count &= ~(0x80);
- if(io->read_proc(&run, 1, sizeof(BYTE), handle) != 1) {
- throw FI_MSG_ERROR_PARSING;
- }
- if(k + count <= header.width) {
- memset(bits + k, run, count);
- } else {
- throw FI_MSG_ERROR_PARSING;
- }
- } else {
- if(k + count <= header.width) {
- if(io->read_proc(&bits[k], count, sizeof(BYTE), handle) != 1) {
- throw FI_MSG_ERROR_PARSING;
- }
- } else {
- throw FI_MSG_ERROR_PARSING;
- }
- }
- k += count;
- i += count;
- }
- return dib;
- } catch(const char* text) {
- if(dib) {
- FreeImage_Unload(dib);
- }
- FreeImage_OutputMessageProc(s_format_id, text);
- return NULL;
- }
- }
- // ==========================================================
- // Init
- // ==========================================================
- void DLL_CALLCONV
- InitCUT(Plugin *plugin, int format_id) {
- s_format_id = format_id;
- plugin->format_proc = Format;
- plugin->description_proc = Description;
- plugin->extension_proc = Extension;
- plugin->regexpr_proc = RegExpr;
- plugin->open_proc = NULL;
- plugin->close_proc = NULL;
- plugin->pagecount_proc = NULL;
- plugin->pagecapability_proc = NULL;
- plugin->load_proc = Load;
- plugin->save_proc = NULL;
- plugin->validate_proc = Validate;
- plugin->mime_proc = MimeType;
- plugin->supports_export_bpp_proc = SupportsExportDepth;
- plugin->supports_export_type_proc = SupportsExportType;
- plugin->supports_icc_profiles_proc = NULL;
- plugin->supports_no_pixels_proc = SupportsNoPixels;
- }