diff options
Diffstat (limited to 'decoders/ir_irmp/pd.py')
| -rw-r--r-- | decoders/ir_irmp/pd.py | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/decoders/ir_irmp/pd.py b/decoders/ir_irmp/pd.py index cb69fd0..979c1e0 100644 --- a/decoders/ir_irmp/pd.py +++ b/decoders/ir_irmp/pd.py @@ -24,6 +24,9 @@ import sigrokdecode as srd class SamplerateError(Exception): pass +class LibraryError(Exception): + pass + class Decoder(srd.Decoder): api_version = 3 id = 'ir_irmp' @@ -90,12 +93,11 @@ class Decoder(srd.Decoder): self.put(ss, es, self.out_ann, [0, txts]) def __init__(self): - self.irmp = irmp_library.IrmpLibrary() - self.lib_rate = self.irmp.get_sample_rate() + self.irmp = None self.reset() def reset(self): - self.irmp.reset_state() + self.want_reset = True def start(self): self.out_ann = self.register(srd.OUTPUT_ANN) @@ -105,11 +107,24 @@ class Decoder(srd.Decoder): self.samplerate = value def decode(self): + if not self.irmp: + try: + self.irmp = irmp_library.IrmpLibrary() + except Exception as e: + txt = e.args[0] + raise LibraryError(txt) + if self.irmp: + self.lib_rate = self.irmp.get_sample_rate() + if not self.irmp or not self.lib_rate: + raise LibraryError('Cannot access IRMP library. One instance limit exceeded?') if not self.samplerate: raise SamplerateError('Cannot decode without samplerate.') if self.samplerate % self.lib_rate: - raise SamplerateError('capture samplerate must be multiple of library samplerate ({})'.format(self.lib_rate)) + raise SamplerateError('Capture samplerate must be multiple of library samplerate ({})'.format(self.lib_rate)) self.rate_factor = int(self.samplerate / self.lib_rate) + if self.want_reset: + self.irmp.reset_state() + self.want_reset = False self.active = 0 if self.options['polarity'] == 'active-low' else 1 ir, = self.wait() |