refactor mutexes for audio effects in audio flinger and audio policy
Remove effect specific mutex (mEffectLock) in AudioPolicyService: Due to
concurrent capture (among other reasons), it is necessary that the audio
policy manager state preserved by mLock includes audio effects
registration and enabling.
Moved all audio policy API calls from audio flinger out of locked regions
for audio flinger, thread and effects mutexes to avoid cross deadlocks
between audioflinger and audio policy manager:
- centralized audio policy API calls in EffectModule::updatePolicyState()
- the enabled state now reflects the state requested by the controlling
handle, not the actual effect processing state: a suspended effect is
now considered enabled.
A new audio policy manager API moveEffectsToIo() is added to atomically
handle moving effects to a new input or output without having to call
unregister > register > enable sequence.
Also fix assert in setStreamVolume to match volume group refactoring
in audio policy manager.
Bug: 128419018
Test: CTS tests for audio effects.
Test: manual tests with Duo calls, Play Music, Youtube, notifications
with and without Bluetooth and wired headset.
Change-Id: I8bd3af81026c55b6be283b3a9b41fe4998e060fd
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 18cb361..37b2d08 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -315,6 +315,7 @@
sp<EffectChain> getEffectChain(audio_session_t sessionId);
// same as getEffectChain() but must be called with ThreadBase mutex locked
sp<EffectChain> getEffectChain_l(audio_session_t sessionId) const;
+ std::vector<int> getEffectIds_l(audio_session_t sessionId);
// add an effect chain to the chain list (mEffectChains)
virtual status_t addEffectChain_l(const sp<EffectChain>& chain) = 0;
// remove an effect chain from the chain list (mEffectChains)
@@ -334,7 +335,8 @@
sp<AudioFlinger::EffectModule> getEffect(audio_session_t sessionId, int effectId);
sp<AudioFlinger::EffectModule> getEffect_l(audio_session_t sessionId, int effectId);
// add and effect module. Also creates the effect chain is none exists for
- // the effects audio session
+ // the effects audio session. Only called in a context of moving an effect
+ // from one thread to another
status_t addEffect_l(const sp< EffectModule>& effect);
// remove and effect module. Also removes the effect chain is this was the last
// effect