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Commit 00a122a8 authored by Amy's avatar Amy Committed by Amy Zhang
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Operation with TVs that do not support the System Audio Mode 

Note: according to HDMI spec 1.4b cec 13.15.4.2, when non-TV device
inits System Audio Mode, and the amplifier is the Active Source or is on
the Active Path, amplifier can send <Set System Audio Mode on> without
querying TV's support on SAM.

Test: manual
Bug: 80296135
Change-Id: I5c850e1c906f13e60e7c830e8d3d6d3c8e7f118f
(cherry picked from commit 6ebc6a53ae2b55db1526aac94fb754bfd52522fe)
parent bf3fd062

services/core/java/com/android/server/hdmi/HdmiCecLocalDeviceAudioSystem.java

+11 −0
Original line number Diff line number Diff line
@@ -992,6 +992,17 @@ public class HdmiCecLocalDeviceAudioSystem extends HdmiCecLocalDeviceSource { 
        }

        // Wake up device

        mService.wakeUp();

        // If Audio device is the active source or is on the active path,

        // enable system audio mode without querying TV's support on sam.

        // This is per HDMI spec 1.4b CEC 13.15.4.2.

        if (mService.pathToPortId(getActiveSource().physicalAddress)

                != Constants.INVALID_PORT_ID) {

            setSystemAudioMode(true);

            mService.sendCecCommand(

                HdmiCecMessageBuilder.buildSetSystemAudioMode(

                    mAddress, Constants.ADDR_BROADCAST, true));

            return;

        }

        // Check if TV supports System Audio Control.

        // Handle broadcasting setSystemAudioMode on or aborting message on callback.

        queryTvSystemAudioModeSupport(new TvSystemAudioModeSupportedCallback() {