tools: bmp2tiles init

diff --git a/tools/Makefile b/tools/Makefile
deleted file mode 100644 (file)
index 2d1a03a..0000000
--- a/tools/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-all:
-       cc -O2 romheader.c -o romheader
-
-clean:
-       rm romheader

diff --git a/tools/bmp2tiles/Makefile b/tools/bmp2tiles/Makefile
new file mode 100644 (file)
index 0000000..1f710ba
--- /dev/null
+++ b/tools/bmp2tiles/Makefile
@@ -0,0 +1,5 @@
+all:
+       cc -O2 bmp2tiles.c -o bmp2tiles -lSDL2
+
+clean:
+       rm bmp2tiles

diff --git a/tools/bmp2tiles/bmp2tiles.c b/tools/bmp2tiles/bmp2tiles.c
new file mode 100644 (file)
index 0000000..42a8805
--- /dev/null
+++ b/tools/bmp2tiles/bmp2tiles.c
@@ -0,0 +1,85 @@
+/**
+ * File              : bmp2tiles.c
+ * Author            : Robin Krens <robin@robinkrens.nl>
+ * Date              : 04.06.2022
+ * Last Modified Date: 12.06.2022
+ * Last Modified By  : Robin Krens <robin@robinkrens.nl>
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <SDL2/SDL_image.h>
+
+#define TILE_SZ                32
+#define FOURBBP_ROW    8
+#define FOURBPP_COL    8
+
+void bmp_info(SDL_Surface * img)
+{
+       SDL_PixelFormat * fmt;
+       fmt = img->format;
+       fprintf(stdout,"WIDTH: %d, HEIGHT: %d, BPP: %d\n", img->w, img->h, fmt->BitsPerPixel);
+}
+
+
+void generate_4bpp_tile_planar(unsigned char *buf, void * userdata, int sz)
+{
+       unsigned char * ptr = (unsigned char *) userdata;
+       for (int i = 0; i < 32; i+=4) {
+               /* fprintf(stdout, "userdata: pos: %d - %d\n", i, *ptr++); */
+               for (int j = 0; j < 4; ++j) {
+                       for (int x = 0; x < 8; ++x) {
+                               buf[i + j] = ptr[x] << j; 
+                       }
+                       /* printf("%d: %x\n", i+j, buf[i+j]); */
+               }
+               ptr += 8;
+       }
+}
+
+void generate_4bpp_tile_packed(unsigned char *buf, void * userdata, int sz)
+{
+       unsigned char * ptr = (unsigned char *) userdata;
+       for (int i = 0; i < 32; i+=4) {
+               for (int j = 0; j < 4; ++j) {
+                       buf[i+j] = ptr[0] << 4;
+                       buf[i+j] |= ptr[1];
+                       ptr += 2;
+                       printf("%d: %x\n", i+j, buf[i+j]);
+               }
+       }
+}
+
+int main(void)
+{
+       SDL_Surface * rawbmp;
+       SDL_PixelFormat * fmt;
+       char filename[] = "test.bmp";
+       rawbmp = SDL_LoadBMP(filename);
+       
+       if (!rawbmp) {
+               fprintf(stderr, "can not load .bmp file\n");
+               exit(EXIT_FAILURE);
+       }
+
+       bmp_info(rawbmp);
+
+       SDL_LockSurface(rawbmp);
+       rawbmp->userdata = rawbmp->pixels;
+       SDL_UnlockSurface(rawbmp);
+
+       unsigned char *tile_buf = malloc(sizeof(unsigned char) * TILE_SZ);
+
+       generate_4bpp_tile_packed(tile_buf, rawbmp->userdata, 64);
+       
+       /* if (rawbmp->format->BitsPerPixel != 24) {
+               fprintf(stderr, "format %d not supported\n", rawbmp->format->BitsPerPixel);
+               exit(EXIT_FAILURE);
+       } */
+
+
+       SDL_FreeSurface(rawbmp);
+
+}

diff --git a/tools/romheader.c b/tools/romheader.c
deleted file mode 100644 (file)
index 0b23559..0000000
--- a/tools/romheader.c
+++ /dev/null
@@ -1,83 +0,0 @@
-/**
- * File              : romheader.c
- * Author            : Robin Krens <robin@robinkrens.nl>
- * Date              : 04.06.2022
- * Last Modified Date: 04.06.2022
- * Last Modified By  : Robin Krens <robin@robinkrens.nl>
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-
-#define VERBOSE                1
-#define SEGMENT_SIZE   0x10000
-
-/* simple tool to pad 0xFF and to add ROM header
- * romheader structure is as follows: */
-
-struct __attribute__((__packed__)) rom_header {
-       uint8_t jmpf;
-       uint16_t label;
-       uint16_t segment;
-       uint8_t padding;
-       uint8_t dev_id;
-       uint8_t ws_type;
-       uint8_t cart_nr;
-       uint8_t padding2;
-       uint8_t romsize;
-       uint8_t ramsize;
-       uint8_t wsspec;
-       uint8_t padding3;
-       uint16_t checksum;
-};
-
-static struct rom_header header = {
-       .jmpf = 0xEA,
-       .label = 0x0,
-       .segment = 0xF000,
-       .dev_id = 0x42,
-       .ws_type = 0x01,
-       .cart_nr = 0x01,
-       .romsize = 0x03,
-       .ramsize = 0x00,
-       .wsspec = 0x04,
-       .checksum = 0x0000
-};
-
-
-int main(void)
-{
-       FILE *fp;
-       /* open for appending, so seek postion is at end */
-       fp = fopen("test.wsc", "a");
-       if (fp == NULL) {
-               perror("can not open file");
-               exit(EXIT_FAILURE);
-       }
-
-       unsigned pos = ftell(fp);
-       int gap = (SEGMENT_SIZE - pos) - sizeof(struct rom_header);
-       if (gap <= 0)
-               goto cleanup;
-
-       char dummy[SEGMENT_SIZE + 1];
-       memset(dummy, 0xFF, SEGMENT_SIZE);
-
-       unsigned wc = fwrite(dummy, sizeof(char), gap, fp);
-       wc += fwrite(&header, sizeof(char), sizeof(struct rom_header), fp);
-       
-       if (VERBOSE) {
-               printf("size of struct: %ld\n", sizeof(struct rom_header));
-               printf("pos: %d, gap to fill: %d\n", pos, gap);
-               printf("written %d\n", wc);
-       }
-
-cleanup:
-
-       printf("done\n");
-       fflush(fp);
-       fclose(fp);
-}
-