tree c87127ff35a768a9b4eac61e3d4c2b7386a6b010
parent b0f5bfd12c03317d179e1cec64149f3216756af5
author Eric Laurent <elaurent@google.com> 1542313471 -0800
committer Eric Laurent <elaurent@google.com> 1544812433 -0800

audio HAL: support multiple active input streams

Implement support for more than one active input streams.
New implementation is limited to one active stream per capture use
case as there is one PCM ALSA device per front end and use case.
Note that the number of active sound trigger sessions is limited by the
soundtrigger implementation, not the number of PCM ALSA devices.
We do not enforce a max number of open streams per use case as this is
done by the audio_polcy_configuration file.

Bug: 111438757
Test: manual audio smoke tests for capture.
Change-Id: I1a372bca154d1ee034526f2b6b3ddeeae93a71f2