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// ==========================================================
// 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;
}
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