BOOL fipImage::loadFromMemory(fipMemoryIO& memIO, int flag) {
FREE_IMAGE_FORMAT fif = FIF_UNKNOWN;
// check the file signature and get its format
fif = memIO.getFileType();
if((fif != FIF_UNKNOWN) && FreeImage_FIFSupportsReading(fif)) {
// Free the previous dib
if(_dib) {
FreeImage_Unload(_dib);
}
// Load the file
_dib = memIO.load(fif, flag);
_bHasChanged = TRUE;
if(_dib == NULL)
return FALSE;
return TRUE;
}
return FALSE;
}
BOOL fipMultiPage::open(fipMemoryIO& memIO, int flags) {
// try to guess the file format from the filename
FREE_IMAGE_FORMAT fif = memIO.getFileType();
// check for supported file types
if((fif == FIF_UNKNOWN) || (fif != FIF_TIFF) && (fif != FIF_ICO) && (fif != FIF_GIF))
return FALSE;
// open the stream
_mpage = FreeImage_LoadMultiBitmapFromMemory(fif, memIO, flags);
return (NULL != _mpage ) ? TRUE : FALSE;
}
BOOL fipImage::saveToMemory(FREE_IMAGE_FORMAT fif, fipMemoryIO& memIO, int flag) const {
BOOL bSuccess = FALSE;
if(fif != FIF_UNKNOWN ) {
// Check that the dib can be saved in this format
BOOL bCanSave;
FREE_IMAGE_TYPE image_type = FreeImage_GetImageType(_dib);
if(image_type == FIT_BITMAP) {
// standard bitmap type
WORD bpp = FreeImage_GetBPP(_dib);
bCanSave = (FreeImage_FIFSupportsWriting(fif) && FreeImage_FIFSupportsExportBPP(fif, bpp));
} else {
// special bitmap type
bCanSave = FreeImage_FIFSupportsExportType(fif, image_type);
}
if(bCanSave) {
bSuccess = memIO.save(fif, _dib, flag);
return bSuccess;
}
}
return bSuccess;
}