qcom/audio/hal: Fix ringtone playback issue on Speaker
- Start music playback on HDMI, go to settings-->sound-->ringtone
and select a ringtone for playback. The ringtone audio playback
starts only after 15sec.
- When ringtone is selected, the low latency path is switched from
HDMI to Speaker device. The low latency path uses only 2 buffers
of 10.3msec each. If the device switch takes more time, the data
filled kernel buffers meet the stop threshold and the ALSA
framework triggers auto stop on the stream. This results PCM
stream to be blocked for more than 10sec and hence no audio
heard until the write is unblocked.
- Fix the issue by setting the stop threshold to INT_MAX to avoid
auto stop.
- This change also ensures that open_output_stream fails if the
HDMI sink does not support 5.1 or 7.1 playback.
Bug: 8401042
Change-Id: I4c1e04be2c47d67087b1cdda87e2dce77bde58f1
2 files changed