ref: cd3d125861d25ab60393e29e991f55f26a3874f4
parent: f4071b2ce70cfdd204d0bae8b9f1d0a352a2f403
author: yenatch <[email protected]>
date: Sat Jun 17 20:09:25 EDT 2017
Add `gfx` tool for graphics postprocessing
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -6,7 +6,8 @@
scan_includes \
palette \
pokemon_animation \
- pokemon_animation_graphics
+ pokemon_animation_graphics \
+ gfx
@:
%: %.c
--- /dev/null
+++ b/tools/common.h
@@ -1,0 +1,37 @@
+#ifndef GUARD_COMMON_H
+#define GUARD_COMMON_H
+
+int __getopt_long_i__;
+#define getopt_long(c, v, s, l) getopt_long(c, v, s, l, &__getopt_long_i__)
+
+FILE *fopen_verbose(char *filename, char *mode) {+ FILE *f = fopen(filename, mode);
+ if (!f) {+ fprintf(stderr, "Could not open file: \"%s\"\n", filename);
+ }
+ return f;
+}
+
+uint8_t *read_u8(char *filename, int *size) {+ FILE *f = fopen_verbose(filename, "rb");
+ if (!f) {+ exit(1);
+ }
+ fseek(f, 0, SEEK_END);
+ *size = ftell(f);
+ rewind(f);
+ uint8_t *data = malloc(*size);
+ fread(data, 1, *size, f);
+ fclose(f);
+ return data;
+}
+
+void write_u8(char *filename, uint8_t *data, int size) {+ FILE *f = fopen_verbose(filename, "wb");
+ if (f) {+ fwrite(data, 1, size, f);
+ fclose(f);
+ }
+}
+
+#endif // GUARD_COMMON_H
--- /dev/null
+++ b/tools/gfx.c
@@ -1,0 +1,120 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <getopt.h>
+#include <string.h>
+
+#include "common.h"
+
+static void usage(void) {+ fprintf(stderr, "Usage: gfx [--trim-whitespace] [--remove-whitespace] [-d depth] [-h] [-o outfile] infile \n");
+}
+
+struct Options {+ int trim_whitespace;
+ int remove_whitespace;
+ int help;
+ char *outfile;
+ int depth;
+};
+
+struct Options Options = {+ .depth = 2,
+};
+
+void get_args(int argc, char *argv[]) {+ struct option long_options[] = {+ {"remove-whitespace", no_argument, &Options.remove_whitespace, 1},+ {"trim-whitespace", no_argument, &Options.trim_whitespace, 1},+ {"depth", required_argument, 0, 'd'},+ {"help", no_argument, 0, 'h'},+ {0}+ };
+ for (int opt = 0; opt != -1;) {+ switch(opt = getopt_long(argc, argv, "ho:d:", long_options)) {+ case 'h':
+ Options.help = true;
+ break;
+ case 'o':
+ Options.outfile = optarg;
+ break;
+ case 'd':
+ Options.depth = strtoul(optarg, NULL, 0);
+ break;
+ case 0:
+ case -1:
+ break;
+ default:
+ printf("ay %d", opt);+ usage();
+ exit(1);
+ break;
+ }
+ }
+}
+
+bool is_whitespace(uint8_t *tile, int tile_size) {+ uint8_t WHITESPACE = 0;
+ for (int i = 0; i < tile_size; i++) {+ if (tile[i] != WHITESPACE) {+ return false;
+ }
+ }
+ return true;
+}
+
+void trim_whitespace(char *infile, char *outfile) {+ int size;
+ uint8_t *data = read_u8(infile, &size);
+ int tile_size = Options.depth * 8;
+ for (int i = size - tile_size; i > 0; i -= tile_size) {+ if (is_whitespace(&data[i], tile_size)) {+ size = i;
+ } else {+ break;
+ }
+ }
+ write_u8(outfile, data, size);
+}
+
+void remove_whitespace(char *infile, char *outfile) {+ int size;
+ uint8_t *data = read_u8(infile, &size);
+ int tile_size = Options.depth * 8;
+ int i = 0;
+ for (int j = 0; i < size && j < size; i += tile_size, j += tile_size) {+ while (is_whitespace(&data[j], tile_size)) {+ j += tile_size;
+ }
+ if (j > i) {+ memcpy(&data[i], &data[j], tile_size);
+ }
+ }
+ size = i;
+ write_u8(outfile, data, size);
+}
+
+int main(int argc, char *argv[]) {+ get_args(argc, argv);
+ argc -= optind;
+ argv += optind;
+ if (Options.help) {+ usage();
+ return 0;
+ }
+ if (argc < 1) {+ usage();
+ exit(1);
+ }
+ char *infile = argv[0];
+ if (Options.remove_whitespace) {+ if (Options.outfile) {+ remove_whitespace(infile, Options.outfile);
+ }
+ } else if (Options.trim_whitespace) {+ if (Options.outfile) {+ trim_whitespace(infile, Options.outfile);
+ }
+ }
+ return 0;
+}