In aaudio, when adding tracks to mixed stream, it is needed to update
audio attributes to HAL whenever the tracks are added or removed.
Currently, only the audio attributes used to open the stream will be
sent to the HAL. In that case, adding audio attributes of the clients
when starting the stream can help solve the problem. In audio flinger,
the client's audio attributes will be used to create MmapTrack.
Test: play multiple aaudio tracks, add log
Bug: 77279923
Change-Id: Ic1c536049e194a2bb7513425ee4828d52769d27f
If a sessionID other than AAUDIO_SESSION_ID_NONE is requested
then legacy data path will be forced.
SessionID is implemented for MMAP data path but not used.
It is easier to implement it now then try to figure
it out later.
Bug: 33268927
Test: test_session_id.cpp will be moved to CTS when stable
Change-Id: I3ea67f57c1cbe24a512980f1352b917ab3cb6387
Implement correct indication of client UID and PID to audio flinger
for AAudio MMAP streams in both exclusive mode and shared mode.
- Add start/stop client methods on MMAP streams used only when the MMAP
stream is in AAudio service and carries a mix of shared streams.
- Add "In Service'" indication from "client" side to AAudioServiceStreamMMAP
so that the behavior can be adapted accordingly.
- Modify logic on audio flinger side with regard to mmap tracks and
audio HAL stream activity:
- use same audio session for all clients on a same stream to match
audio policy logic to share same direct output stream for clients on same
session. This is also more consistent with current volume and effect
handling as all MMAP clients sharing the same output stream have the
same volume and use case.
- start/stop the HAL when the stream is started/stopped with the initial client
handle (returned when the stream is opened) but do not create a track.
AAudioService implementation will always send an additional start command before
first client starts and a stop command after last client stops,
in both shared and exclusive mode.
- start/stop a track only if the start/stop stream command is received
with a handle different from the initial handle.
- Allow more than one active client from the same UID on a MMAP input in audio policy.
Bug: 62950008
Test: verify playback and capture in mmap mode
Change-Id: I86151bbb637ff172d2fd5f813056eab13a7bcd3c
Added definition of MmapStreamInterface used by Oboe service
to open, configure and control MMAP streams at the audio HAl.
This interface is implemented by audioflinger and abstracts the details
of interacting with audio policy manager and audio HAL from Oboe service.
A callback interface MmapStreamCallback is also defiend to communicate
volume and routing changes back to Oboe service.
Bug: 33398120
Test: build
Change-Id: If953d44903aaa4eb17ff16f1922ca16e5e0e0a87
jiabin
Phil Burk
Eric Laurent