all decoders: introduce a reset() method

Move initialization code of protocol decoders from the constructor to a
new reset() helper method. The libsigrokdecode backend could run this
method several times to clear the decoder's internal state, before new
data from another acquisition gets fed to decode() calls.

1 files changed, 3 insertions, 0 deletions

diff --git a/decoders/usb_request/pd.py b/decoders/usb_request/pd.py
index 1bd2878..a480284 100644
--- a/decoders/usb_request/pd.py
+++ b/decoders/usb_request/pd.py
@@ -136,6 +136,9 @@ class Decoder(srd.Decoder):
     )
 
     def __init__(self):
+        self.reset()
+
+    def reset(self):
         self.samplerate = None
         self.request = {}
         self.request_id = 0