Is it impossible to write tEXt chunk data to PNG on iOS? I successfully read the chunk data and modified it to add tEXt data to the chunk and saved it as an image in Gallery, But the tEXt data keeps disappearing when I read the chunk data from the image in the Gallery. Does iOS p...
By looking at the code it seems there is no way to prevent png_read_info() from calling longjmp if a png file contains a chunk larger than the maximum defined alloc size (with the exception of png_IDAT chunks). There was a reason for 347...