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Commit 09f0cc86 authored by Yan Han's avatar Yan Han
Browse files

On TV, use default SAD for ARC when none was given by the Amplifier. 

Bug: 306316058
Test: Manual, using setup described in b/297946051
Change-Id: I8c2d323ef09d9772a6bff5b5d96c49e1047de170
parent 4e42ebe6

services/core/java/com/android/server/audio/AudioService.java

+31 −0
Original line number Diff line number Diff line
@@ -92,6 +92,7 @@ import android.hardware.usb.UsbManager; 
import android.hidl.manager.V1_0.IServiceManager;

import android.media.AudioAttributes;

import android.media.AudioAttributes.AttributeSystemUsage;

import android.media.AudioDescriptor;

import android.media.AudioDeviceAttributes;

import android.media.AudioDeviceInfo;

import android.media.AudioDeviceVolumeManager;
@@ -104,6 +105,7 @@ import android.media.AudioManager.AudioDeviceCategory; 
import android.media.AudioManagerInternal;

import android.media.AudioMixerAttributes;

import android.media.AudioPlaybackConfiguration;

import android.media.AudioProfile;

import android.media.AudioRecordingConfiguration;

import android.media.AudioRoutesInfo;

import android.media.AudioSystem;
@@ -230,6 +232,7 @@ import java.text.SimpleDateFormat; 
import java.util.ArrayList;

import java.util.Arrays;

import java.util.Collection;

import java.util.Collections;

import java.util.Date;

import java.util.HashMap;

import java.util.HashSet;
@@ -7600,6 +7603,13 @@ public class AudioService extends IAudioService.Stub 
    @Retention(RetentionPolicy.SOURCE)

    public @interface ConnectionState {}













    /**













     * Default SAD for a TV using ARC, used when the Amplifier didn't report any SADs.













     * Represents 2-channel LPCM including all defined sample rates and bit depths.













     * For the format definition, see Table 34 in the CEA standard CEA-861-D.













     */













    private static final byte[] DEFAULT_ARC_AUDIO_DESCRIPTOR = new byte[]{0x09, 0x7f, 0x07};



























    @android.annotation.EnforcePermission(android.Manifest.permission.MODIFY_AUDIO_ROUTING)















    /**















     * see AudioManager.setWiredDeviceConnectionState()









@@ -7611,6 +7621,27 @@ public class AudioService extends IAudioService.Stub



























        attributes = retrieveBluetoothAddress(attributes);



























        // When using ARC, a TV should use default 2 channel LPCM if the Amplifier didn't













        // report any SADs. See section 13.15.3 of the HDMI-CEC spec version 1.4b.













        if (attributes.getType() == AudioDeviceInfo.TYPE_HDMI_ARC













                && attributes.getRole() == AudioDeviceAttributes.ROLE_OUTPUT













                && attributes.getAudioDescriptors().isEmpty()) {













            attributes = new AudioDeviceAttributes(













                    attributes.getRole(),













                    attributes.getType(),













                    attributes.getAddress(),













                    attributes.getName(),













                    attributes.getAudioProfiles(),













                    new ArrayList<AudioDescriptor>(Collections.singletonList(













                            new AudioDescriptor(













                                    AudioDescriptor.STANDARD_EDID,













                                    AudioProfile.AUDIO_ENCAPSULATION_TYPE_NONE,













                                    DEFAULT_ARC_AUDIO_DESCRIPTOR













                            )













                    ))













            );













        }



























        if (state != CONNECTION_STATE_CONNECTED















                && state != CONNECTION_STATE_DISCONNECTED) {















            throw new IllegalArgumentException("Invalid state " + state);