1 files changed, 85 insertions, 0 deletions
diff --git a/graphics/gd1/files/gdcmpgif.c b/graphics/gd1/files/gdcmpgif.c
new file mode 100644
index 000000000000..13c243014d2b
--- /dev/null
+++ b/graphics/gd1/files/gdcmpgif.c
@@ -0,0 +1,85 @@
+#include <stdio.h>
+#include <unistd.h> /* For unlink function */
+#include "gd.h"
+
+/* A short program which converts a .png file into a .gd file, for
+	your convenience in creating images on the fly from a
+	basis image that must be loaded quickly. The .gd format
+	is not intended to be a general-purpose format. */
+
+void CompareImages(char *msg, gdImagePtr im1, gdImagePtr im2);
+
+
+int main(int argc, char **argv)
+{
+	gdImagePtr im1, im2;
+	FILE *in;
+
+	if (argc != 3) {
+		fprintf(stderr, "Usage: gdcmpgif filename.gif filename.gif\n");
+		exit(1);
+	}
+	in = fopen(argv[1], "rb");
+	if (!in) {
+		fprintf(stderr, "Input file does not exist!\n");
+		exit(1);
+	}
+	im1 = gdImageCreateFromGif(in);
+	fclose(in);
+
+	if (!im1) {
+		fprintf(stderr, "Input is not in GIF format!\n");
+		exit(1);
+	}
+
+	in = fopen(argv[2], "rb");
+	if (!in) {
+		fprintf(stderr, "Input file 2 does not exist!\n");
+		exit(1);
+	}
+	im2 = gdImageCreateFromGif(in);
+	fclose(in);
+
+	if (!im2) {
+		fprintf(stderr, "Input 2 is not in GIF format!\n");
+		exit(1);
+	}
+
+	CompareImages("gdcmpgif", im1, im2);
+
+	gdImageDestroy(im1);
+        gdImageDestroy(im2);
+
+	return 0;
+}
+
+void CompareImages(char *msg, gdImagePtr im1, gdImagePtr im2)
+{
+	int cmpRes;
+
+	cmpRes = gdImageCompare(im1, im2);
+
+	if (cmpRes & GD_CMP_IMAGE) {
+		printf("%%%s: ERROR images differ: BAD\n",msg);
+	} else if (cmpRes != 0) {
+		printf("%%%s: WARNING images differ: WARNING - Probably OK\n",msg);
+	} else {
+		printf("%%%s: OK\n",msg);
+		return;
+	}
+
+	if (cmpRes & (GD_CMP_SIZE_X + GD_CMP_SIZE_Y)) {
+		printf("-%s: INFO image sizes differ\n",msg);
+	}
+
+	if (cmpRes & GD_CMP_NUM_COLORS) {
+		printf("-%s: INFO number of pallette entries differ %d Vs. %d\n",msg,
+			im1->colorsTotal, im2->colorsTotal);
+	}
+
+	if (cmpRes & GD_CMP_COLOR) {
+		printf("-%s: INFO actual colours of pixels differ\n",msg);
+	}
+}
+
+