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snes: add tools for generating "compressed" tilemaps
This commit is contained in:
Vince Weaver
parent
e0208e2ad1
commit
75fccd3ce8
@ -5,6 +5,7 @@ LFLAGS =
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all: bin2byte color_convert convert_font convert_font_bin \
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dump_font make_pal \
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pcx_to_tiles_4bpp pcx_to_tiles_8bpp \
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pcx_to_compressed_tilemap_8bpp \
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ansi_to_tile string_to_bytes convert_font_4bpp \
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snes_checksum
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@ -79,6 +80,13 @@ pcx_to_tiles_8bpp.o: pcx_to_tiles_8bpp.c
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$(CC) $(CFLAGS) -c pcx_to_tiles_8bpp.c
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pcx_to_compressed_tilemp_8bpp: pcx_to_compressed_tilemap_8bpp.o
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$(CC) $(LFLAGS) -o pcx_to_compressed_tilemap_8bpp pcx_to_compressed_tilemap_8bpp.o
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pcx_to_compressed_tilemap_8bpp.o: pcx_to_compressed_tilemap_8bpp.c
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$(CC) $(CFLAGS) -c pcx_to_compressed_tilemap_8bpp.c
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string_to_bytes: string_to_bytes.o
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$(CC) $(LFLAGS) -o string_to_bytes string_to_bytes.o
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@ -98,7 +106,8 @@ clean:
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rm -f *.o *~ bin2byte color_convert convert_font \
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convert_font_bin dump_font make_pal \
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pcx_to_tiles_4bpp pcx_to_tiles_8bpp \
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ansi_to_tile string_to_bytes \
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pcx_to_compressed_tilemap_8bpp \
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ansi_to_tile string_to_bytes \
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convert_font_4bpp snes_checksum
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291
tb_snes/tools/pcx_to_compressed_tilemap_8bpp.c
Normal file
291
tb_snes/tools/pcx_to_compressed_tilemap_8bpp.c
Normal file
@ -0,0 +1,291 @@
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/* Converts a 24-bit PCX file to 256-color SNES background tiles */
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#include <stdio.h> /* For FILE I/O */
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#include <string.h> /* For strncmp */
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#include <fcntl.h> /* for open() */
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#include <unistd.h> /* for lseek() */
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#include <sys/stat.h> /* for file modes */
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#include <stdlib.h> /* exit() */
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/* Convert to 15-bpp bgr */
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static int rgb2bgr(int r,int g, int b) {
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int r2,g2,b2,bgr;
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r2=(r>>3)&0x1f;
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g2=(g>>3)&0x1f;
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b2=(b>>3)&0x1f;
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bgr=(b2<<10)|(g2<<5)|r2;
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return bgr;
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}
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static char symbol_name[BUFSIZ]="temp";
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#define MAX_TILE_X 32
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#define MAX_TILE_Y 32
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static unsigned short tilemap[MAX_TILE_X*MAX_TILE_Y]; /* 2k */
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static int uncompressed_size=0;
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static int compressed_size=0;
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static unsigned short tiledata[MAX_TILE_X][MAX_TILE_Y][8][4];
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static unsigned short tiledata_hflip[MAX_TILE_X][MAX_TILE_Y][8][4];
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static unsigned short temp_tile[8][4];
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static int total_tiles=0;
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static int compressed_tiles=0;
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/* File already open */
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static int vmwLoadPCX(int pcx_fd) {
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int debug=1,bpp;
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int x,y;
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int i,numacross,planes=0;
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int xsize,ysize,plane;
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int xmin,ymin,xmax,ymax,version;
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unsigned char pcx_header[128];
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unsigned char temp_byte;
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/*************** DECODE THE HEADER *************************/
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read(pcx_fd,&pcx_header,128);
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xmin=(pcx_header[5]<<8)+pcx_header[4];
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ymin=(pcx_header[7]<<8)+pcx_header[6];
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xmax=(pcx_header[9]<<8)+pcx_header[8];
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ymax=(pcx_header[11]<<8)+pcx_header[10];
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version=pcx_header[1];
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bpp=pcx_header[3];
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if (debug) {
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fprintf(stderr,"Manufacturer: ");
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if (pcx_header[0]==10) fprintf(stderr,"Zsoft\n");
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else fprintf(stderr,"Unknown %i\n",pcx_header[0]);
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fprintf(stderr,"Version: ");
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switch(version) {
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case 0: fprintf(stderr,"2.5\n"); break;
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case 2: fprintf(stderr,"2.8 w palette\n"); break;
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case 3: fprintf(stderr,"2.8 w/o palette\n"); break;
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case 4: fprintf(stderr,"Paintbrush for Windows\n"); break;
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case 5: fprintf(stderr,"3.0+\n"); break;
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default: fprintf(stderr,"Unknown %i\n",version);
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}
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fprintf(stderr,"Encoding: ");
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if (pcx_header[2]==1) fprintf(stderr,"RLE\n");
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else fprintf(stderr,"Unknown %i\n",pcx_header[2]);
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fprintf(stderr,"BitsPerPixelPerPlane: %i\n",bpp);
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fprintf(stderr,"File goes from %i,%i to %i,%i\n",xmin,ymin,xmax,ymax);
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fprintf(stderr,"Horizontal DPI: %i\n",(pcx_header[13]<<8)+pcx_header[12]);
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fprintf(stderr,"Vertical DPI: %i\n",(pcx_header[15]<<8)+pcx_header[14]);
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fprintf(stderr,"Number of colored planes: %i\n",pcx_header[65]);
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fprintf(stderr,"Bytes per line: %i\n",(pcx_header[67]<<8)+pcx_header[66]);
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fprintf(stderr,"Palette Type: %i\n",(pcx_header[69]<<8)+pcx_header[68]);
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fprintf(stderr,"Hscreen Size: %i\n",(pcx_header[71]<<8)+pcx_header[70]);
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fprintf(stderr,"Vscreen Size: %i\n",(pcx_header[73]<<8)+pcx_header[72]);
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}
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planes=pcx_header[65];
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xsize=((xmax-xmin)+1);
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ysize=((ymax-ymin)+1);
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char *output;
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output=calloc((xsize*ysize),sizeof(unsigned int));
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if (output==NULL) return -1;
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x=0; y=0;
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while(y<ysize) {
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for(plane=0;plane<planes;plane++) {
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x=0;
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while (x<xsize) {
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read(pcx_fd,&temp_byte,1);
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if (0xc0 == (temp_byte&0xc0)) {
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numacross=temp_byte&0x3f;
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read(pcx_fd,&temp_byte,1);
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// fprintf(stderr,"%i pixels of %i\n",numacross,temp_byte);
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for(i=0;i<numacross;i++) {
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output[(y*xsize)+x]=temp_byte;
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// printf("%x ",temp_byte);
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x++;
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}
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}
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else {
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// fprintf(stderr,"%i, %i Color=%i\n",x,y,temp_byte);
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// printf("%x ",temp_byte);
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output[(y*xsize)+x]=temp_byte;
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x++;
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}
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}
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}
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y++;
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}
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#define X_CHUNKSIZE 8
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#define Y_CHUNKSIZE 8
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unsigned int plane0,plane1,plane2,plane3;
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unsigned int plane4,plane5,plane6,plane7,offset;
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printf("%s_tile_data:\n",symbol_name);
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int ychunk,xchunk;
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for(ychunk=0;ychunk<ysize/Y_CHUNKSIZE;ychunk++) {
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for(xchunk=0;xchunk<xsize/X_CHUNKSIZE;xchunk++) {
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// printf("\t; Tile %d %d, Plane 0 Plane 1\n",xchunk,ychunk);
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for(y=0;y<Y_CHUNKSIZE;y++){
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plane0=0;plane1=0;
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for(x=0;x<X_CHUNKSIZE;x++) {
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plane0<<=1;
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plane1<<=1;
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offset=((ychunk*Y_CHUNKSIZE+y)*xsize)+(xchunk*X_CHUNKSIZE)+x;
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plane0|=(output[offset])&1;
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plane1|=(((output[offset])&2)>>1);
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}
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temp_tile[y][0]=(plane1<<8)|plane0;
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// printf("\t.word $%02x%02x\n",plane1,plane0);
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}
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// printf("\t; Plane 2 Plane 3\n");
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for(y=0;y<Y_CHUNKSIZE;y++){
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plane2=0;plane3=0;
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for(x=0;x<X_CHUNKSIZE;x++) {
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plane2<<=1;
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plane3<<=1;
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offset=((ychunk*Y_CHUNKSIZE+y)*xsize)+(xchunk*X_CHUNKSIZE)+x;
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plane2|=(((output[offset])&4)>>2);
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plane3|=(((output[offset])&8)>>3);
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}
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temp_tile[y][1]=(plane3<<8)|plane2;
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// printf("\t.word $%02x%02x\n",plane3,plane2);
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}
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// printf("\t; Plane 4 Plane 5\n");
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for(y=0;y<Y_CHUNKSIZE;y++){
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plane4=0;plane5=0;
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for(x=0;x<X_CHUNKSIZE;x++) {
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plane4<<=1;
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plane5<<=1;
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offset=((ychunk*Y_CHUNKSIZE+y)*xsize)+(xchunk*X_CHUNKSIZE)+x;
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plane4|=(((output[offset])&16)>>4);
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plane5|=(((output[offset])&32)>>5);
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}
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temp_tile[y][2]=(plane5<<8)|plane4;
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// printf("\t.word $%02x%02x\n",plane5,plane4);
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}
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// printf("\t; Plane 6 Plane 7\n");
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for(y=0;y<Y_CHUNKSIZE;y++){
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plane6=0;plane7=0;
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for(x=0;x<X_CHUNKSIZE;x++) {
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plane6<<=1;
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plane7<<=1;
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offset=((ychunk*Y_CHUNKSIZE+y)*xsize)+(xchunk*X_CHUNKSIZE)+x;
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plane6|=(((output[offset])&64)>>6);
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plane7|=(((output[offset])&128)>>7);
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}
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temp_tile[y][3]=(plane7<<8)|plane6;
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// printf("\t.word $%02x%02x\n",plane7,plane6);
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}
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for(x=0;x<4;x++) {
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printf("\t; Tile %d %d, Plane %d Plane %d\n",xchunk,ychunk,
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x*2,(x*2)+1);
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for(y=0;y<Y_CHUNKSIZE;y++) {
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printf("\t.word $%04x\n",temp_tile[y][x]);
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}
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}
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int v=0,h=0,o=0,pal=0;
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tilemap[total_tiles]=
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( ((v&1)<<15) |
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((h&1)<<14) |
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((o&1)<<13) |
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((pal&7)<<10) |
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(total_tiles&0x3ff));
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total_tiles++;
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compressed_tiles++;
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}
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}
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fprintf(stderr,"Total tiles: %d Compressed tiles %d\n",
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total_tiles,compressed_tiles);
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fprintf(stderr,"Original size\t= %d bytes\n",total_tiles*2*8*4);
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fprintf(stderr,"Compressed size\t= %d bytes\n",
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(compressed_tiles*2*8*4)+(total_tiles*2));
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printf("%s_tilemap:\n",symbol_name);
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for(x=0;x<total_tiles;x++) {
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printf("\t.word $%04x\t; %dv %dh %do %dp %d\n",
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tilemap[x],
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(tilemap[x]>>15)&1,
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(tilemap[x]>>14)&1,
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(tilemap[x]>>13)&1,
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(tilemap[x]>>10)&7,
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(tilemap[x])&0x3ff);
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}
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printf("%s_palette:\n",symbol_name);
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/* read in palette */
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read(pcx_fd,&temp_byte,1);
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if (temp_byte!=12) {
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fprintf(stderr,"Error! No palette found!\n");
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}
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else {
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int r,g,b;
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for(i=0;i<256;i++) {
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read(pcx_fd,&temp_byte,1);
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r=temp_byte;
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read(pcx_fd,&temp_byte,1);
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g=temp_byte;
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read(pcx_fd,&temp_byte,1);
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b=temp_byte;
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printf("\t.word $%x\t; r=%x g=%x b=%x\n",rgb2bgr(r,g,b),r,g,b);
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}
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}
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return 0;
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}
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int main(int argc, char **argv) {
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int result;
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if (argc>1) {
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strncpy(symbol_name,argv[1],BUFSIZ);
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}
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/* read from stdin */
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result=vmwLoadPCX(fileno(stdin));
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if (result<0) {
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fprintf(stderr,"Error reading PCX from stdin\n");
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exit(1);
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}
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return 0;
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}
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