diff --git a/hgr-utils/Makefile b/hgr-utils/Makefile index b997e2d6..f1316c49 100644 --- a/hgr-utils/Makefile +++ b/hgr-utils/Makefile @@ -1,6 +1,6 @@ include ../Makefile.inc -all: pcx2hgr shape_table dump_table +all: pcx2hgr png2hgr shape_table dump_table dump_table: dump_table.o $(CC) $(LFLAGS) -o dump_table dump_table.o @@ -21,11 +21,18 @@ pcx2hgr: pcx2hgr.o pcx2hgr.o: pcx2hgr.c $(CC) $(CFLAGS) -c pcx2hgr.c +png2hgr: png2hgr.o + $(CC) $(LFLAGS) -lpng -o png2hgr png2hgr.o + +png2hgr.o: png2hgr.c + $(CC) $(CFLAGS) -c png2hgr.c + + install: - cp pcx2hgr shape_table $(INSTALL_LOC) + cp pcx2hgr shape_table png2hgr $(INSTALL_LOC) clean: - rm -f *~ *.o pcx2hgr shape_table dump_table + rm -f *~ *.o pcx2hgr shape_table dump_table png2hgr diff --git a/hgr-utils/png2hgr.c b/hgr-utils/png2hgr.c new file mode 100644 index 00000000..5f2e8bd0 --- /dev/null +++ b/hgr-utils/png2hgr.c @@ -0,0 +1,301 @@ +/* Converts 140x192 8-bit PNG file with correct palette to Apple II HGR */ + +#define VERSION "0.0.1" + +#include /* For FILE I/O */ +#include /* For strncmp */ +#include /* for open() */ +#include /* for lseek() */ +#include /* for file modes */ +#include /* free() */ + +#include + +#define OUTPUT_C 0 +#define OUTPUT_ASM 1 +#define OUTPUT_RAW 2 + +/* If you want default black a different color try the below */ +/* Useful if you are trying to xdraw to get red/blue */ +#if 0 +/* Default is BLACK0 */ +#define DEFAULT_BLACK -1 +#else +/* DEFAULT is BLACK1 */ +#define DEFAULT_BLACK 1 +#endif + +static int debug=0; + +static int convert_color(int color) { + + int c=0; + + switch(color) { + case 0x000000: c=0; break; /* black */ + case 0xe31e60: c=1; break; /* magenta */ + case 0x604ebd: c=2; break; /* dark blue */ + case 0xff44fd: c=3; break; /* purple */ + case 0x00a360: c=4; break; /* dark green */ + case 0x9c9c9c: c=5; break; /* grey 1 */ + case 0x14cffd: c=6; break; /* medium blue */ + case 0xd0c3ff: c=7; break; /* light blue */ + case 0x607203: c=8; break; /* brown */ + case 0xff6a3c: c=9; break; /* orange */ + case 0x9d9d9d: c=10; break; /* grey 2 */ + case 0xffa0d0: c=11; break; /* pink */ + case 0x14f53c: c=12; break; /* bright green */ + case 0xd0dd8d: c=13; break; /* yellow */ + case 0x72ffd0: c=14; break; /* aqua */ + case 0xffffff: c=15; break; /* white */ + default: + printf("Unknown color %x\n",color); + break; + } + + return c; +} + + + +/* expects a PNG where the xsize is *2 */ +int loadpng(char *filename, + unsigned char *image, int *xsize, int *ysize, + int high) { + + int x,y; + int color; + FILE *infile; + int debug=0; + unsigned char *out_ptr; + int width, height; + int a2_color; + + png_byte bit_depth; + png_structp png_ptr; + png_infop info_ptr; + png_bytep *row_pointers; + png_byte color_type; + + unsigned char header[8]; + + /* open file and test for it being a png */ + infile = fopen(filename, "rb"); + if (infile==NULL) { + fprintf(stderr,"Error! Could not open %s\n",filename); + return -1; + } + + /* Check the header */ + fread(header, 1, 8, infile); + if (png_sig_cmp(header, 0, 8)) { + fprintf(stderr,"Error! %s is not a PNG file\n",filename); + return -1; + } + + /* initialize stuff */ + png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); + if (!png_ptr) { + fprintf(stderr,"Error create_read_struct\n"); + exit(-1); + } + + info_ptr = png_create_info_struct(png_ptr); + if (!info_ptr) { + fprintf(stderr,"Error png_create_info_struct\n"); + exit(-1); + } + + png_init_io(png_ptr, infile); + png_set_sig_bytes(png_ptr, 8); + + png_read_info(png_ptr, info_ptr); + + width = png_get_image_width(png_ptr, info_ptr); + height = png_get_image_height(png_ptr, info_ptr); + *xsize=width; + *ysize=height/2; + + color_type = png_get_color_type(png_ptr, info_ptr); + bit_depth = png_get_bit_depth(png_ptr, info_ptr); + + + + if (debug) { + printf("PNG: width=%d height=%d depth=%d\n",width,height,bit_depth); + if (color_type==PNG_COLOR_TYPE_RGB) printf("Type RGB\n"); + else if (color_type==PNG_COLOR_TYPE_RGB_ALPHA) printf("Type RGBA\n"); + else if (color_type==PNG_COLOR_TYPE_PALETTE) printf("Type palette\n"); + } + +// number_of_passes = png_set_interlace_handling(png_ptr); + png_read_update_info(png_ptr, info_ptr); + + row_pointers = (png_bytep*) malloc(sizeof(png_bytep) * height); + for (y=0; y=argc) { + printf("ERROR: Was expecting filename!\n"); + exit(1); + } + + filename=strdup(argv[optind]); + + memset(image,0,8192); + + if (loadpng(filename,image,&xsize,&ysize,1)<0) { + fprintf(stderr,"Error loading png!\n"); + exit(-1); + } + + fprintf(stderr,"Loaded image %d by %d\n",xsize,ysize); + + for(i=0;i<8192;i++) { + fprintf(stdout,"%c",image[i]); + } + + return 0; +} + + +