Class: PNG::Chunk
- Inherits:
-
Object
- Object
- PNG::Chunk
- Defined in:
- lib/spittle/png/chunk.rb
Instance Method Summary collapse
Instance Method Details
#chunk_name ⇒ Object
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# File 'lib/spittle/png/chunk.rb', line 3 def chunk_name raise "looks like you havn't subclassed and defined a chunk_name" end |
#to_chunk ⇒ Object
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# File 'lib/spittle/png/chunk.rb', line 7 def to_chunk to_check = chunk_name + encode [encode.length].pack("N") + to_check + [Zlib.crc32(to_check)].pack("N") end |