mirror of
https://github.com/rfc2822/GfxTablet
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51d862cf45
doc/protocol.txt: Replaced type names with architecture independent aliases, fixed 'type' size which is a byte, and recorded that it uses "big endian", or "network byte order" convention.
27 lines
727 B
Text
27 lines
727 B
Text
Network protocol used by GfxTablet
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Version 1
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---------
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GfxTablet app sends UDP packets to port 40118 of the destination host.
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Packet structure, uses network byte order (big endian):
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9 bytes "GfxTablet"
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1 word version number
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1 byte type:
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0 motion event (hovering)
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1 button event (finger, pen etc. touches surface)
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1 word x (using full range: 0..65535)
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1 word y (using full range: 0..65535)
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1 word pressure (using full range 0..65535, 32768 == pressure 1.0f on Android device)
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when type == button event:
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1 byte number of button, starting with 0
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1 byte button status:
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0 button is down
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1 button is up
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