Merge pull request #105 from rikvanriel/master

avoid garbage collection related stream creation failure
bastibe · Aug 14, 2020 · 97a9f2b · 97a9f2b
2 parents 878ad90 + 351094b
commit 97a9f2b
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/soundcard/pulseaudio.py b/soundcard/pulseaudio.py
@@ -644,8 +644,10 @@ def __enter__(self):
         if not _pulse._pa_sample_spec_valid(samplespec):
             raise RuntimeError('invalid sample spec')
 
-        channelmap = _ffi.new("pa_channel_map*")
-        channelmap = _pa.pa_channel_map_init_auto(channelmap, samplespec.channels, _pa.PA_CHANNEL_MAP_DEFAULT)
+        # pam and channelmap refer to the same object, but need different
+        # names to avoid garbage collection trouble on the Python/C boundary
+        pam = _ffi.new("pa_channel_map*")
+        channelmap = _pa.pa_channel_map_init_auto(pam, samplespec.channels, _pa.PA_CHANNEL_MAP_DEFAULT)
         if isinstance(self.channels, collections.Iterable):
             for idx, ch in enumerate(self.channels):
                 channelmap.map[idx] = ch+1