gentpl

3 files changed, 92 insertions, 0 deletions

diff --git a/gentpl/Makefile b/gentpl/Makefile
new file mode 100644
index 0000000..4d92b53
--- /dev/null
+++ b/gentpl/Makefile
@@ -0,0 +1,4 @@
+gentpl: gentpl.c
+	gcc -o gentpl gentpl.c -lgd -std=gnu99
+clean:
+	rm -f gentpl
\ No newline at end of file
diff --git a/gentpl/gentpl.c b/gentpl/gentpl.c
new file mode 100644
index 0000000..b0cdfdc
--- /dev/null
+++ b/gentpl/gentpl.c
@@ -0,0 +1,88 @@
+#include <gd.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <arpa/inet.h>
+struct texthead {
+    unsigned short height;
+    unsigned short width;
+    unsigned int format;
+    unsigned int offs;
+    unsigned int wrap_s;
+    unsigned int wrap_t;
+    unsigned int min;
+    unsigned int mag;
+    float lod_bias;
+    unsigned char edge_lod;
+    unsigned char min_lod;
+    unsigned char max_lod;
+    unsigned char unpacked;
+};
+int main(int argc, char **argv) {
+    if(argc != 3) {
+        printf("Usage: gentpl <input.png> <output.tpl>\n");
+        exit(1);
+    }
+    gdImagePtr im;
+    FILE *in = fopen(argv[1], "rb");
+    if(!in) {
+        printf("Failed to open %s\n", argv[1]); // why strerror not working?
+        exit(1);
+    }
+    im = gdImageCreateFromPng(in);
+    fclose(in);
+    FILE *out = fopen(argv[2], "wb");
+    if(!out) {
+        printf("Failed to open %s\n", argv[2]); // why strerror not working?
+        exit(1);
+    }
+    
+    if(gdImageSX(im) % 4 != 0 || gdImageSY(im) % 4 != 0) {
+        printf("Bad dimensions\n");
+        exit(1);
+    }
+    
+    char magic[] = {0x00, 0x20, 0xaf, 0x30};
+    fwrite(magic, 1, 4, out);
+    
+    unsigned int stuff[] = {htonl(1), htonl(0xc), htonl(0x14), 0};
+    fwrite(stuff, 4, 4, out);
+    
+    struct texthead h;
+    memset(&h, 0, sizeof(h));
+    
+    h.format = htonl(6);
+    h.offs = htonl(0x14 + sizeof(h));
+    printf("%dx%d\n", gdImageSX(im), gdImageSY(im));
+    h.width = htons(gdImageSX(im));
+    h.height = htons(gdImageSY(im));
+    
+    fwrite(&h, sizeof(h), 1, out);
+    
+    for(int y = 0; y < gdImageSY(im); y += 4) {
+        for(int x = 0; x < gdImageSX(im); x += 4) {
+            for(int y1 = y; y1 < y + 4; y1++) {
+                for(int x1 = x; x1 < x + 4; x1++) {
+                    int p = gdImageGetPixel(im, x1, y1);
+                    unsigned char a = 254 - 2*((unsigned char) gdImageAlpha(im, p));
+                    if(a == 254) a++;
+                    unsigned char b = (unsigned char) gdImageRed(im, p);
+                    fputc(a, out);
+                    fputc(b, out);                }
+            }
+        
+            for(int y1 = y; y1 < y + 4; y1++) {
+                for(int x1 = x; x1 < x + 4; x1++) {
+                    int p = gdImageGetPixel(im, x1, y1);
+                    unsigned char a = (unsigned char) gdImageGreen(im, p);
+                    unsigned char b = (unsigned char) gdImageBlue(im, p);
+                    fputc(a, out);
+                    fputc(b, out);
+                }
+            }
+        }
+    }
+    
+    fclose(out);
+    gdImageDestroy(im);
+}
\ No newline at end of file
diff --git a/gentpl/test.png b/gentpl/test.png
new file mode 100644
index 0000000..b1c851a
--- /dev/null
+++ b/gentpl/test.png