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png2rle: add raw target

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turns out RLE is better compressing than lz4 in many cases
This commit is contained in:
Vince Weaver 2018-09-27 21:10:08 -04:00
parent cdcd274923
commit fa36d30d8b
2 changed files with 46 additions and 15 deletions
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1
gr-utils/png2gr.c
View File

@ -17,7 +17,6 @@ int main(int argc, char **argv) {
int row=0;
int col=0;
int enough=0;
int x;
unsigned char out_buffer[1024];

60
gr-utils/png2rle.c
View File

@ -11,6 +11,7 @@
#define OUTPUT_C 0
#define OUTPUT_ASM 1
#define OUTPUT_RAW 2
/* Converts a PNG to RLE compressed data */
@ -32,7 +33,7 @@ int rle_original(int out_type, char *varname,
fprintf(stdout,"unsigned char %s[]={\n",varname);
fprintf(stdout,"\t0x%X,0x%X,",xsize,ysize);
}
else {
else if (out_type==OUTPUT_ASM) {
fprintf(stdout,"%s:",varname);
fprintf(stdout,"\t.byte $%X,$%X",xsize,ysize);
}
@ -59,7 +60,7 @@ int rle_original(int out_type, char *varname,
printf("\n\t");
}
}
else {
else if (out_type==OUTPUT_ASM) {
if (count==0) {
printf("\n\t.byte ");
}
@ -71,9 +72,14 @@ int rle_original(int out_type, char *varname,
if (out_type==OUTPUT_C) {
printf("0x%02X,0x%02X, ",run,last);
}
else {
else if (out_type==OUTPUT_ASM) {
printf("$%02X,$%02X",run,last);
}
else {
printf("%c",run);
printf("%c",last);
}
size+=2;
count++;
@ -91,7 +97,7 @@ int rle_original(int out_type, char *varname,
if (out_type==OUTPUT_C) {
printf("0x%02X,0x%02X, ",run,last);
}
else {
else if (out_type==OUTPUT_ASM) {
if (count==0) {
printf("\n\t.byte ");
}
@ -99,6 +105,9 @@ int rle_original(int out_type, char *varname,
printf(", ");
}
printf("$%02X,$%02X\n",run,last);
} else {
printf("%c",run);
printf("%c",last);
}
size+=2;
}
@ -115,7 +124,7 @@ int rle_original(int out_type, char *varname,
if (out_type==OUTPUT_C) {
fprintf(stdout,"0xFF,0xFF,");
fprintf(stdout,"\t};\n");
} else {
} else if (out_type==OUTPUT_ASM) {
fprintf(stdout,"\t.byte $FF,$FF\n");
}
@ -138,14 +147,14 @@ static int print_run(int count, int out_type, int run, int last) {
if (out_type==OUTPUT_C) {
printf("\n\t");
}
else {
else if (out_type==OUTPUT_ASM) {
printf("\n\t.byte ");
}
}
else {
if (out_type==OUTPUT_C) {
}
else {
else if (out_type==OUTPUT_ASM) {
printf(", ");
}
}
@ -154,18 +163,25 @@ static int print_run(int count, int out_type, int run, int last) {
if (out_type==OUTPUT_C) {
printf("0x%02X,",last);
}
else {
else if (out_type==OUTPUT_ASM) {
printf("$%02X",last);
}
else {
printf("%c",last);
}
size++;
}
if (run==2) {
if (out_type==OUTPUT_C) {
printf("0x%02X,0x%02X,",last,last);
}
else {
else if (out_type==OUTPUT_ASM) {
printf("$%02X,$%02X",last,last);
}
else {
printf("%c",last);
printf("%c",last);
}
size+=2;
}
@ -173,9 +189,13 @@ static int print_run(int count, int out_type, int run, int last) {
if (out_type==OUTPUT_C) {
printf("0x%02X,0x%02X,",0xA0|run,last);
}
else {
else if (out_type==OUTPUT_ASM) {
printf("$%02X,$%02X",0xA0|run,last);
}
else {
printf("%c",0xA0|run);
printf("%c",last);
}
size+=2;
}
@ -183,9 +203,14 @@ static int print_run(int count, int out_type, int run, int last) {
if (out_type==OUTPUT_C) {
printf("0x%02X,0x%02X,0x%02X,",0xA0,run,last);
}
else {
else if (out_type==OUTPUT_ASM) {
printf("$%02X,$%02X,$%02X",0xA0,run,last);
}
else {
printf("%c",0xA0);
printf("%c",run);
printf("%c",last);
}
size+=3;
}
@ -211,9 +236,11 @@ int rle_smaller(int out_type, char *varname,
fprintf(stdout,"unsigned char %s[]={\n",varname);
fprintf(stdout,"\t0x%X, /* ysize=%d */",xsize,ysize);
}
else {
else if (out_type==OUTPUT_ASM) {
fprintf(stdout,"%s:",varname);
fprintf(stdout,"\t.byte $%X ; ysize=%d",xsize,ysize);
} else {
fprintf(stdout,"%c",xsize);
}
size+=2;
@ -267,8 +294,10 @@ int rle_smaller(int out_type, char *varname,
if (out_type==OUTPUT_C) {
fprintf(stdout,"0xA1,");
fprintf(stdout,"\t};\n");
} else {
} else if (out_type==OUTPUT_ASM) {
fprintf(stdout,"\n\t.byte $A1\n");
} else {
fprintf(stdout,"%c",0xA1);
}
size+=1;
@ -289,7 +318,7 @@ int main(int argc, char **argv) {
if (argc<4) {
fprintf(stderr,"Usage:\t%s type INFILE varname\n\n",argv[0]);
fprintf(stderr,"\ttype: c or asm\n");
fprintf(stderr,"\ttype: c or asm or raw\n");
fprintf(stderr,"\tvarname: label for graphic\n");
fprintf(stderr,"\n");
@ -302,6 +331,9 @@ int main(int argc, char **argv) {
else if (!strcmp(argv[1],"asm")) {
out_type=OUTPUT_ASM;
}
else if (!strcmp(argv[1],"raw")) {
out_type=OUTPUT_RAW;
}
if (loadpng(argv[2],&image,&xsize,&ysize)<0) {
fprintf(stderr,"Error loading png!\n");