mirror of
https://github.com/moparisthebest/uinput-mapper
synced 2024-11-25 00:52:14 -05:00
120 lines
3.4 KiB
Python
120 lines
3.4 KiB
Python
# encoding: utf-8
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import cinput
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"""
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Module to help out with config parsing and input mapping
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"""
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def parse_conf(f, devname):
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"""
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Reads in input devices and returns a config that contains all the events
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exported by the device.
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devname specificies the idx of this input device
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"""
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conf = {}
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e = f.get_exposed_events()
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for k, v in e.iteritems():
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t = cinput.events[k]
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if t == cinput.EV_SYN:
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continue
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conf[(devname, t)] = {}
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for key in v:
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tt = cinput.event_keys[t][key]
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conf[(devname, t)][tt] = {
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'type' : (devname, t),
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'code' : tt,
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'value' : None
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#'value' : lambda x: x
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}
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if t == cinput.EV_ABS:
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p = f.get_absprop(tt)
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conf[(devname, t)][tt]['prop'] = {
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'max' : p.maximum,
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'min' : p.minimum,
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'fuzz' : p.fuzz,
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'flat' : p.flat
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}
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return conf
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def pretty_conf_print(c):
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"""
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Function to print an entire configuration
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"""
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for k, v in c.iteritems():
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print 'Input:', k[0], 'Type:', cinput.rev_events[k[1]]
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for kk, vv in v.iteritems():
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n_ev_d, n_ev_t = vv['type']
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print ' ' * 4,
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print cinput.rev_event_keys[k[1]][kk],
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print ' → ([%d, %s], %s)' % (n_ev_d,
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cinput.rev_events[n_ev_t],
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cinput.rev_event_keys[n_ev_t][vv['code']])
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if n_ev_t == cinput.EV_ABS:
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print 'Properties: Max: %d Min: %d Fuzz: %d Flat: %d' % (
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vv['prop']['max'], vv['prop']['min'],
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vv['prop']['fuzz'], vv['prop']['flat'])
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def get_exported_device_count(c):
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"""
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Iterate dictionary to find out how many devices are exported.
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(Rather simple at the moment)
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"""
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m = 0
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for _, v in c.iteritems():
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for _, o in v.iteritems():
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m = max(m, o['type'][0])
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return m + 1
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class KeyMapper(object):
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def __init__(self, config):
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self._config = config
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def map_event(self, ev, fd):
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"""
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Maps an event *ev* from fd *fd* to a possibly different event and output
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fd *ofd*.
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"""
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_type = ev.type
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ofd = fd
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if (fd, _type) in self._config:
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typemaps = self._config[(fd, _type)]
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if ev.code in typemaps:
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info = typemaps[ev.code]
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ofd, ev.type = info['type']
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ev.code = info['code']
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if info['value'] is not None:
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ev.value = info['value'](ev.value)
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else:
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ev.value = ev.value
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return ofd, ev
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def expose(self, d, fd):
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"""
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Expose exposes events to a uinput-device *d* with index *fd* from the
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config passed to __init__.
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"""
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for (n, evt), v in self._config.iteritems():
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for code, dat in v.iteritems():
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ofd, t = dat['type']
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if ofd != fd:
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continue
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d.expose_event_type(t)
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d.expose_event(t, dat['code'])
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if t == cinput.EV_ABS:
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p = dat['prop']
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d.set_absprop(dat['code'], _max=p['max'], _min=p['min'],
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fuzz=p['fuzz'], flat=p['flat'])
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