audio policy: update output delayMs in setPhoneState

- Issue: When call is connected in HDMI while playing music,
  Playback is routed to phone shortly
- Cause: delayMs is not updated correctly, and no delay is
  set when setOutputDevice is called
- Fix: update delayMs with biggest mOutput latency and mute
  STRATEGY_MEDIA on all outputs

Bug: 7268860
Change-Id: I12b75443a29ab8485314bd0cbfe5ee4789be5c29
Signed-off-by: Iliyan Malchev <malchev@google.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/audio/AudioPolicyManagerBase.cpp b/audio/AudioPolicyManagerBase.cpp
index e878f3a..4682e39 100644
--- a/audio/AudioPolicyManagerBase.cpp
+++ b/audio/AudioPolicyManagerBase.cpp
@@ -341,6 +341,22 @@ void AudioPolicyManagerBase::setPhoneState(int state)
         setStreamMute(AudioSystem::RING, true, mPrimaryOutput);
     }
 
+    if (isStateInCall(state)) {
+        for (size_t i = 0; i < mOutputs.size(); i++) {
+            AudioOutputDescriptor *desc = mOutputs.valueAt(i);
+            //take the biggest latency for all outputs
+            if (delayMs < desc->mLatency*2) {
+                delayMs = desc->mLatency*2;
+            }
+            //mute STRATEGY_MEDIA on all outputs
+            if (desc->strategyRefCount(STRATEGY_MEDIA) != 0) {
+                setStrategyMute(STRATEGY_MEDIA, true, mOutputs.keyAt(i));
+                setStrategyMute(STRATEGY_MEDIA, false, mOutputs.keyAt(i), MUTE_TIME_MS,
+                    getDeviceForStrategy(STRATEGY_MEDIA, true /*fromCache*/));
+            }
+        }
+    }
+
     // change routing is necessary
     setOutputDevice(mPrimaryOutput, newDevice, force, delayMs);