commit 95511add8ad4d440c67272503559f5042c4e6f1f
author Eric Laurent <elaurent@google.com> Fri Oct 10 15:31:38 2014 -0700
committer Eric Laurent <elaurent@google.com> Fri Oct 10 15:39:14 2014 -0700
tree a605077307327ac30bf9b553ad4e48bfa300e8cf
parent f5ada6edcc83bb1b313abcd4c4fbdc4f7724f04d

audio policy: add support for ro.audio.media_deep_buffer

Bug: 17931716.
Change-Id: Ife170f20f5d02b71059fbd384bd29759fafee826

services/audiopolicy/AudioPolicyManager.cpp

diff --git a/services/audiopolicy/AudioPolicyManager.cpp b/services/audiopolicy/AudioPolicyManager.cpp
index 536987a..e4d785c 100644
--- a/services/audiopolicy/AudioPolicyManager.cpp
+++ b/services/audiopolicy/AudioPolicyManager.cpp
@@ -926,6 +926,10 @@
     if ((flags & AUDIO_OUTPUT_FLAG_HW_AV_SYNC) != 0) {
         flags = (audio_output_flags_t)(flags | AUDIO_OUTPUT_FLAG_DIRECT);
     }
+    if (mForceDeepBufferForMedia && (flags & AUDIO_OUTPUT_FLAG_DIRECT) == 0 &&
+            stream == AUDIO_STREAM_MUSIC) {
+        flags = (audio_output_flags_t)(flags | AUDIO_OUTPUT_FLAG_DEEP_BUFFER);
+    }
 
     sp<IOProfile> profile;
 
@@ -2653,8 +2657,14 @@
     mTotalEffectsCpuLoad(0), mTotalEffectsMemory(0),
     mA2dpSuspended(false),
     mSpeakerDrcEnabled(false), mNextUniqueId(1),
-    mAudioPortGeneration(1)
+    mAudioPortGeneration(1),
+    mForceDeepBufferForMedia(false)
 {
+    char propValue[PROPERTY_VALUE_MAX];
+    if (property_get("ro.audio.media_deep_buffer", propValue, "0")) {
+        mForceDeepBufferForMedia = atoi(propValue);
+    }
+
     mUidCached = getuid();
     mpClientInterface = clientInterface;