IO.cpp

#pragma once
#include "IO.h"

FIBITMAP* IO::GenericLoader(const char* Path, int flag) {
	FREE_IMAGE_FORMAT fif = FIF_UNKNOWN;

	// check the file signature and deduce its format
	// (the second argument is currently not used by FreeImage)
	fif = FreeImage_GetFileType(Path, 0);
	if (fif == FIF_UNKNOWN) {
		// no signature ?
		// try to guess the file format from the file extension
		fif = FreeImage_GetFIFFromFilename(Path);
	}
	// check that the plugin has reading capabilities ...
	if ((fif != FIF_UNKNOWN) && FreeImage_FIFSupportsReading(fif)) {
		// ok, let's load the file
		FIBITMAP* dib = FreeImage_Load(fif, Path, flag);
		// unless a bad file format, we are done !
		return dib;
	}
	return NULL;
}

bool IO::GenericWriter(FIBITMAP* dib, const char* Path, int flag) {
	FREE_IMAGE_FORMAT fif = FIF_UNKNOWN;
	BOOL bSuccess = FALSE;

	if (dib) {
		// try to guess the file format from the file extension
		fif = FreeImage_GetFIFFromFilename(Path);
		if (fif == FIF_PNG) {
			// check that the plugin has sufficient writing and export capabilities ...
			WORD bpp = FreeImage_GetBPP(dib);
			if (FreeImage_FIFSupportsWriting(fif) && FreeImage_FIFSupportsExportBPP(fif, bpp)) {
				// ok, we can save the file
				bSuccess = FreeImage_Save(fif, dib, Path, flag);
				// unless an abnormal bug, we are done !
			}
		}
	}
	return (bSuccess == TRUE) ? true : false;
}