tools/capture-test.py: Fix ALSA parameter

This was a usage goof, the final "dir" argument to
snd_pcm_hw_params_set_rate() is not specifying the direction of the
stream, it's specifying the "direction" in which the code will err if
it has to pick a non-matching value.

In this case the parameter had a value of zero ("exact match", what we
want) anyway, so it was an invisible noop.

Signed-off-by: Andy Ross <andyross@google.com>

Author: andyross

tools/capture-test.py

@@ -112,7 +112,7 @@ def pcm_init_stream(pcm, rate, chans, fmt, access):
     alsa.snd_pcm_hw_params_any(pcm, hwp)
     alsa.snd_pcm_hw_params_set_format(pcm, hwp, fmt)
     alsa.snd_pcm_hw_params_set_channels(pcm, hwp, chans)
-    alsa.snd_pcm_hw_params_set_rate(pcm, hwp, rate, alsa.PCM_STREAM_PLAYBACK)
+    alsa.snd_pcm_hw_params_set_rate(pcm, hwp, rate, 0)
     alsa.snd_pcm_hw_params_set_access(pcm, hwp, access)
     alsa.snd_pcm_hw_params(pcm, hwp)