Creates an instance of this class.
Describes where this data stream should go within the file. This describe the exact location, and configured when loading from PNG files. WithinIDAT will result in dumping all of them before the last theoretical IDAT chunk.
Contains the data of this chunk
Identifies the data of this chunk
Describes the exact location of
Stores ancillary data embedded into PNG files. Handling these are not vital for opening PNG files, but available for various purposes. Please be aware that certain readers might have issues with nonstandard chunks