APNG

License for all code examples : zlib license

load1png.c : loads static PNG file, using high-level png_read_png() function.

load2png.c : loads static PNG file, using low-level libpng functions.

load3apng.c : loads APNG frames "as is", no composition.

load4apng.c : loads APNG with frames composition (blend and dispose operations)

load5apng.c : loads APNG file, saves all frames as PNG, no frames composition. (!) works without apng patch (!)

load6apng.c : loads APNG file, saves all frames as PNG (32bpp), with frames composition. (!) works without apng patch (!)

rgb2gray.c : converts any APNG to greyscale APNG.

save1png.c : saves static PNG file, using regular unpatched libpng.

save2apng.c : saves animated PNG file, using apng-patched libpng.

To compile and test everything:

make

make test