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Fix compilation of gifanalyzer on old GCC versions

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0b00000 is not standard C, use 0x00 litterals.
Also fix printf format
This commit is contained in:
Thomas Bernard 2018-01-30 13:28:42 +01:00
parent c36729b5bc
commit a4b80c75e1
2 changed files with 25 additions and 14 deletions
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7
tools/gifanalyzer/Makefile
View File

@ -1,4 +1,11 @@
CFLAGS=-Wall
#LDLIBS=-lm
.PHONY: all clean
all: gifanalyzer
clean:
$(RM) *.o gifanalyzer
gifanalyzer: gifanalyzer.o

22
tools/gifanalyzer/gifanalyzer.c
View File

@ -27,24 +27,28 @@
int main(int argc, char* argv[])
{
FILE* theFile;
uint8_t buffer[256];
uint16_t w,h;
if(argc != 2)
if(argc < 2)
{
printf("%s file.gif\n",argv[0]);
exit(-1);
}
theFile = fopen(argv[1], "r");
uint8_t buffer[256];
if (theFile == NULL)
{
fprintf(stderr, "Failed to open file '%s'.\n", argv[1]);
exit(1);
}
fread(buffer, 1, 6, theFile);
buffer[6] = 0;
printf("Signature: %6s\n", buffer);
uint16_t w,h;
fread(&w,2,1,theFile);
fread(&h,2,1,theFile);
@ -52,13 +56,13 @@ int main(int argc, char* argv[])
fread(buffer,1,3,theFile);
int colors = 1 << (((buffer[0]&0b01110000)>>4)+1);
int colors = 1 << (((buffer[0] & 0x70)>>4)+1); // 0x70 == 0b01110000
int color_table_size = 1 << ((buffer[0]&0x7)+1);
printf("Color palette: %#02.2x\n",buffer[0]&0xFF);
if (buffer[0] & 0b10000000) {
printf("Color palette: 0x%02x\n",buffer[0]&0xFF);
if (buffer[0] & 0x80) { // 0x80 == 0b10000000
printf("\tGlobal palette");
if(buffer[0] & 0b00001000)
if(buffer[0] & 0x08) // 0x08 == 0b00001000
printf(" SORTED");
printf("\n");
}