X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2F3dengfx%2Fsrc%2Fgfx%2Fimage.c;fp=src%2F3dengfx%2Fsrc%2Fgfx%2Fimage.c;h=bec0b6ce9a131e359b48162fcca77e8248358a35;hb=6e23259dbabaeb1711a2a5ca25b9cb421f693759;hp=0000000000000000000000000000000000000000;hpb=fe068fa879814784c45e0cb2e65dac489e8f5594;p=summerhack

diff --git a/src/3dengfx/src/gfx/image.c b/src/3dengfx/src/gfx/image.c
new file mode 100644
index 0000000..bec0b6c
--- /dev/null
+++ b/src/3dengfx/src/gfx/image.c
@@ -0,0 +1,148 @@
+/*
+This is a small image library.
+Copyright (C) 2004 John Tsiombikas <nuclear@siggraph.org>
+
+This library is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/* image file library
+ *
+ * author: John Tsiombikas 2003
+ * modified: John Tsiombikas 2004
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "image.h"
+
+#ifdef IMGLIB_USE_PNG
+int check_png(FILE *fp);
+void *load_png(FILE *fp, unsigned long *xsz, unsigned long *ysz);
+int save_png(FILE *fp, void *pixels, unsigned long xsz, unsigned long ysz);
+#endif	/* IMGLIB_USE_PNG */
+
+#ifdef IMGLIB_USE_JPEG
+int check_jpeg(FILE *fp);
+void *load_jpeg(FILE *fp, unsigned long *xsz, unsigned long *ysz);
+int save_jpeg(FILE *fp, void *pixels, unsigned long xsz, unsigned long ysz);
+#endif	/* IMGLIB_USE_JPEG */
+
+#ifdef IMGLIB_USE_TGA
+int check_tga(FILE *fp);
+void *load_tga(FILE *fp, unsigned long *xsz, unsigned long *ysz);
+int save_tga(FILE *fp, void *pixels, unsigned long xsz, unsigned long ysz);
+#endif	/* IMGLIB_USE_TGA */
+
+#ifdef IMGLIB_USE_PPM
+int check_ppm(FILE *fp);
+void *load_ppm(FILE *fp, unsigned long *xsz, unsigned long *ysz);
+int save_ppm(FILE *fp, void *pixels, unsigned long xsz, unsigned long ysz);
+#endif	/* IMGLIB_USE_PPM */
+
+
+static unsigned long save_flags;
+
+
+void *load_image(const char *fname, unsigned long *xsz, unsigned long *ysz) {
+	FILE *file;
+
+	if(!(file = fopen(fname, "rb"))) {
+		fprintf(stderr, "Image loading error: could not open file %s\n", fname);
+		return 0;
+	}
+	
+#ifdef IMGLIB_USE_PNG
+	if(check_png(file)) {
+		return load_png(file, xsz, ysz);
+	}
+#endif	/* IMGLIB_USE_PNG */
+	
+#ifdef IMGLIB_USE_JPEG
+	if(check_jpeg(file)) {
+		return load_jpeg(file, xsz, ysz);
+	}
+#endif	/* IMGLIB_USE_JPEG */
+	
+#ifdef IMGLIB_USE_TGA
+	if(check_tga(file)) {
+		return load_tga(file, xsz, ysz);
+	}
+#endif	/* IMGLIB_USE_TGA */
+
+#ifdef IMGLIB_USE_PPM
+	if(check_ppm(file)) {
+		return load_ppm(file, xsz, ysz);
+	}
+#endif	/* IMGLIB_USE_PPM */
+
+	fclose(file);
+	return 0;
+}
+
+void free_image(void *img) {
+	free(img);
+}
+
+int save_image(const char *fname, void *pixels, unsigned long xsz, unsigned long ysz, enum image_file_format fmt) {
+	FILE *fp;
+
+	if(!(fp = fopen(fname, "wb"))) {
+		fprintf(stderr, "Image saving error: could not open file %s for writing\n", fname);
+		return -1;
+	}
+
+	switch(fmt) {
+	case IMG_FMT_PNG:
+#ifdef IMGLIB_USE_PNG
+		save_png(fp, pixels, xsz, ysz);
+		break;
+#endif	/* IMGLIB_USE_PNG */
+
+	case IMG_FMT_JPEG:
+#ifdef IMGLIB_USE_JPEG
+		save_jpeg(fp, pixels, xsz, ysz);
+#endif	/* IMGLIB_USE_JPEG */
+		break;
+		
+	case IMG_FMT_TGA:
+#ifdef IMGLIB_USE_TGA
+		save_tga(fp, pixels, xsz, ysz);
+#endif	/* IMGLIB_USE_TGA */
+		break;
+
+	case IMG_FMT_PPM:
+#ifdef IMGLIB_USE_PPM
+		save_ppm(fp, pixels, xsz, ysz);
+#endif	/* IMGLIB_USE_PPM */
+		break;
+
+	default:
+		fprintf(stderr, "Image saving error: error saving %s, invalid format specification", fname);
+		break;
+	}
+
+	fclose(fp);
+	
+	return 0;
+}
+
+
+void set_image_save_flags(unsigned int flags) {
+	save_flags = flags;
+}
+
+unsigned int get_image_save_flags(void) {
+	return save_flags;
+}