commit 1433cc64e2cfdf01dc84d4655497caaf5ce18107
author Mingming Yin <mingming@codeaurora.org> Mon Jan 04 14:58:00 2016 -0800
committer Gerrit - the friendly Code Review server <code-review@localhost> Thu Jan 21 02:09:18 2016 -0800
tree beba066a965169b85523e0841c223decf00ba371
parent 61f9adf9fa0e709ecc6e5c42a185fe0a155c4a9a

policy_hal: fix for volume burst during FM device switch

- Issue: Volume burst is heard during device switch
  (headphone and speaker) for FM playback
- Root cause: delayMs passed to CheckAndSetVolume is
  not applied for FM playback
- Fix: Double delayMs and apply FM volume with this delay

Change-Id: Ifa0b214d16527973277a5c84b8a4f3fbd0760d07

policy_hal/AudioPolicyManager.cpp

diff --git a/policy_hal/AudioPolicyManager.cpp b/policy_hal/AudioPolicyManager.cpp
index ac814cd..26e2929 100644
--- a/policy_hal/AudioPolicyManager.cpp
+++ b/policy_hal/AudioPolicyManager.cpp
@@ -1277,7 +1277,8 @@
             mPrevFMVolumeDb = volumeDb;
             AudioParameter param = AudioParameter();
             param.addFloat(String8("fm_volume"), Volume::DbToAmpl(volumeDb));
-            mpClientInterface->setParameters(mPrimaryOutput->mIoHandle, param.toString(), delayMs);
+            //Double delayMs to avoid sound burst while device switch.
+            mpClientInterface->setParameters(mPrimaryOutput->mIoHandle, param.toString(), delayMs*2);
         }
 #endif /* FM_POWER_OPT end */
     }