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Make mTvSystemAudioModeSupport originally null and fix related logic

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Note that before the Android device queries if the TV supports SAM, we
should set mTvSystemAudioModeSupport to null. After quried, set it to
true or false accordingly.
Also we devices goes to standby or loses its logical address, this
boolean should be reset to null

Test: manual
Change-Id: Id39dc2a9b0ee9de010268914a745a6aaae0287ea
(cherry picked from commit 05f01112f9931a058d9fcecb956c1ff35630ed0c)
This commit is contained in:
Amy
2019-03-22 16:53:59 -07:00
committed by Amy Zhang
parent 65e18e43a2
commit 613330ef61
1 changed files with 12 additions and 5 deletions
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17
services/core/java/com/android/server/hdmi/HdmiCecLocalDeviceAudioSystem.java
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@@ -74,7 +74,15 @@ public class HdmiCecLocalDeviceAudioSystem extends HdmiCecLocalDeviceSource {
@GuardedBy("mLock")
private boolean mSystemAudioControlFeatureEnabled;
private boolean mTvSystemAudioModeSupport;
/**
* Indicates if the TV that the current device is connected to supports System Audio Mode or not
*
* <p>If the current device has no information on this, keep mTvSystemAudioModeSupport null
*
* <p>The boolean will be reset to null every time when the current device goes to standby
* or loses its physical address.
*/
private Boolean mTvSystemAudioModeSupport = null;
// Whether ARC is available or not. "true" means that ARC is established between TV and
// AVR as audio receiver.
@@ -321,7 +329,7 @@ public class HdmiCecLocalDeviceAudioSystem extends HdmiCecLocalDeviceSource {
@ServiceThreadOnly
protected void onStandby(boolean initiatedByCec, int standbyAction) {
assertRunOnServiceThread();
mTvSystemAudioModeSupport = false;
mTvSystemAudioModeSupport = null;
// Record the last state of System Audio Control before going to standby
synchronized (mLock) {
mService.writeStringSystemProperty(
@@ -1029,12 +1037,11 @@ public class HdmiCecLocalDeviceAudioSystem extends HdmiCecLocalDeviceSource {
* <p>The result of the query may be cached until Audio device type is put in standby or loses
* its physical address.
*/
// TODO(amyjojo): making mTvSystemAudioModeSupport null originally and fix the logic.
void queryTvSystemAudioModeSupport(TvSystemAudioModeSupportedCallback callback) {
if (!mTvSystemAudioModeSupport) {
if (mTvSystemAudioModeSupport == null) {
addAndStartAction(new DetectTvSystemAudioModeSupportAction(this, callback));
} else {
callback.onResult(true);
callback.onResult(mTvSystemAudioModeSupport);
}
}