imginfo.cpp

空战游戏flacon源码

#include <stdio.h>
#include <stdlib.h>
#include <io.h>
#include <string.h>
#include "..\..\3Dlib\image.h"

GLint ConvertToFactorOf2 (GLint num);

int main (int argc, char* argv[])
{
	struct	_finddata_t c_file;
	long	hFile;
	char	lowerCase[_MAX_PATH];
	char	*wildcard;

	if (argc == 2) {
		wildcard = argv[1];
	} else {
		printf("Usage: ImgInfo file\n");
		printf("where file is an image file (gif, pcx, lbm, or bmp) ");
		printf ("or filename with wildcard\n");
		return -1;
	}
			

	if( (hFile = _findfirst( wildcard, &c_file )) != -1L ) {
		do {

			if(c_file.attrib & _A_SUBDIR) {
				// Skip sub directories
			} 
			else {
				strcpy( lowerCase, c_file.name );
				strlwr( lowerCase );

				CTextureFileMemory fi;
				GLint i = fi.glOpenFileMem ((GLbyte *) lowerCase);
				if (i == 1) {
					fi.imageType = CheckImageType ((GLbyte *) lowerCase);
					if (fi.imageType == IMAGE_TYPE_UNKNOWN) {
						fi.glCloseFileMem ();
					}
					else {
						fi.glReadFileMem ();
						i = ReadTextureImage (&fi);
						if (i == GOOD_READ) {
							GLint w, h;
							w = ConvertToFactorOf2 (fi.image.width);
							h = ConvertToFactorOf2 (fi.image.height);
							printf ("%-14s w = %3d, h = %3d ", 
								lowerCase, fi.image.width, fi.image.height);
							if (w != fi.image.width || h != fi.image.height)
								printf ("--> w = %3d, h = %3d", w, h);
							printf ("\n");
							glReleaseMemory ((char *) fi.image.palette);
							glReleaseMemory ((char *) fi.image.image);
						}
					}
				}
			}

		} while( _findnext( hFile, &c_file ) == 0 );
	}

	_findclose(hFile);

	return 0;
}

GLint ConvertToFactorOf2 (GLint num)
{
	if (num >= 256) return 256;
	if (num == 128) return 128;
	if (num == 64) return 64;
	if (num <= 32) return 32;
	if (num & 0x80) return 256;
	if (num & 0x40) return 128;
	if (num & 0x20) return 64;
	return 32;
}