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How to I view in image, based on code? libpng...c... not sure...?
I have a file, *.c file, that I believe is an image....but its in this format... I know libpng has something to do with it. When I open it in VS, I get the following....
"const unsigned char background_png[] __attribute__ ((section (".cdat"))) = {
0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52,
0x00, 0x00, 0x00, 0xc8, 0x00, 0x00, 0x00, 0x94, 0x08, 0x02, 0x00, 0x00, 0x00, 0x59, 0x76, 0xf1,
0x45, 0x00, 0x00, 0x00, 0x04, 0x67, 0x41, 0x4d, 0x41, 0x00, 0x00, 0xb1, 0x8f, 0x0b, 0xfc, 0x61,...............
.......0x9d, 0x96, 0x52, 0x2b, 0x9e, 0xd8, 0xc3, 0x00, 0x00, 0x00, 0x00, 0x49, 0x45, 0x4e, 0x44, 0xae,
0x42, 0x60, 0x82
};
const int background_png_size = sizeof background_png;"
Basically, I wanna know a way to compile this into an editable image.
I have multiple other images like this as well....
Any help with a program or whatever to figure this out would be awesome!
2 Answers
- satsumoLv 51 decade agoFavorite Answer
It is a PNG image. The first 8 bytes are 'PNG\r\n \n' which is a PNG file signature. The next four bytes are the size of the header chunk followed by 'IHDR'. All of that says it a PNG file.
The code describes a PNG file as data in memory, if you compiled it you would get a C object file, which has lots of other data beside the compiled code. It wouldn't be a PNG file.
Easiest way I can think of is to just add a bit of code that writes the data to disk. Something like this -
#include <stdio.h>
int main (void)
{
FILE *fp = fopen ("background.png", "wb");
if ((fp)
{
fwrite (background_png, background_png_size, 1, fp);
fclose (fp);
}
return 1;
}
Make an executable from that and run it. It will make the PNG file.
- 1 decade ago
maybe the file cant be compiled. But it is read by a specific program. it does have the pixel information (the "0xc8" and so, i think) so you need to convert that one into a pixel (write a program to redraw it by using the above information)
