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Commit bbfd31a5 authored by John Spurlock's avatar John Spurlock
Browse files

AudioAttributes: introduce new flags to bypass audio restrictions. 

 - New @hidden @SystemApi FLAG_BYPASS_INTERRUPTION_POLICY, request
   to ignore any current audio restrictions, such as zen mode
   content-based notification filtering.
 - Wire up FLAG_BYPASS_INTERRUPTION_POLICY to the existing
   audio restriction checks in the framework.

 - New @hidden @SystemApi FLAG_BYPASS_MUTE, request to play
   audibly, even if the underlying stream is muted.
 - Wiring up to audio framework TBD.

 - Use both of these new flags on the inline volume slider
   controls used in Settings, ensuring playback is heard
   regardless of the current device filter state.

Bug: 19407114
Change-Id: I3d44394931592ccbc1b61ddd9a4d1cc984da17cc
parent fadfc4e1

api/system-current.txt

+2 −0
Original line number Diff line number Diff line
@@ -15118,6 +15118,8 @@ package android.media { 
    field public static final android.os.Parcelable.Creator<android.media.AudioAttributes> CREATOR;

    field public static final int FLAG_AUDIBILITY_ENFORCED = 1; // 0x1

    field public static final int FLAG_BEACON = 8; // 0x8

    field public static final int FLAG_BYPASS_INTERRUPTION_POLICY = 64; // 0x40

    field public static final int FLAG_BYPASS_MUTE = 128; // 0x80

    field public static final int FLAG_HW_AV_SYNC = 16; // 0x10

    field public static final int FLAG_HW_HOTWORD = 32; // 0x20

    field public static final int USAGE_ALARM = 4; // 0x4

core/java/android/preference/SeekBarVolumizer.java

+6 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ import android.content.Context; 
import android.content.Intent;

import android.content.IntentFilter;

import android.database.ContentObserver;

import android.media.AudioAttributes;

import android.media.AudioManager;

import android.media.Ringtone;

import android.media.RingtoneManager;
@@ -174,6 +175,11 @@ public class SeekBarVolumizer implements OnSeekBarChangeListener, Handler.Callba 
            }

            if (mRingtone != null) {

                try {

                    mRingtone.setAudioAttributes(new AudioAttributes.Builder(mRingtone

                            .getAudioAttributes())

                            .setFlags(AudioAttributes.FLAG_BYPASS_INTERRUPTION_POLICY |

                                    AudioAttributes.FLAG_BYPASS_MUTE)

                            .build());

                    mRingtone.play();

                } catch (Throwable e) {

                    Log.w(TAG, "Error playing ringtone, stream " + mStreamType, e);

media/java/android/media/AudioAttributes.java

+16 −1
Original line number Diff line number Diff line
@@ -209,8 +209,23 @@ public final class AudioAttributes implements Parcelable { 
    @SystemApi

    public final static int FLAG_HW_HOTWORD = 0x1 << 5;



    /**

     * @hide

     * Flag requesting audible playback even under limited interruptions.

     */

    @SystemApi

    public final static int FLAG_BYPASS_INTERRUPTION_POLICY = 0x1 << 6;



    /**

     * @hide

     * Flag requesting audible playback even when the underlying stream is muted.

     */

    @SystemApi

    public final static int FLAG_BYPASS_MUTE = 0x1 << 7;



    private final static int FLAG_ALL = FLAG_AUDIBILITY_ENFORCED | FLAG_SECURE | FLAG_SCO |

            FLAG_BEACON | FLAG_HW_AV_SYNC | FLAG_HW_HOTWORD;

            FLAG_BEACON | FLAG_HW_AV_SYNC | FLAG_HW_HOTWORD | FLAG_BYPASS_INTERRUPTION_POLICY |

            FLAG_BYPASS_MUTE;

    private final static int FLAG_ALL_PUBLIC = FLAG_AUDIBILITY_ENFORCED | FLAG_HW_AV_SYNC;



    private int mUsage = USAGE_UNKNOWN;

media/java/android/media/AudioTrack.java

+3 −0
Original line number Diff line number Diff line
@@ -1178,6 +1178,9 @@ public class AudioTrack 
    }



    private boolean isRestricted() {

        if ((mAttributes.getFlags() & AudioAttributes.FLAG_BYPASS_INTERRUPTION_POLICY) != 0) {

            return false;

        }

        try {

            final int usage = AudioAttributes.usageForLegacyStreamType(mStreamType);

            final int mode = mAppOps.checkAudioOperation(AppOpsManager.OP_PLAY_AUDIO, usage,

media/java/android/media/MediaPlayer.java

+6 −0
Original line number Diff line number Diff line
@@ -604,6 +604,7 @@ public class MediaPlayer implements SubtitleController.Listener 
    private final IAppOpsService mAppOps;

    private int mStreamType = AudioManager.USE_DEFAULT_STREAM_TYPE;

    private int mUsage = -1;

    private boolean mBypassInterruptionPolicy;



    /**

     * Default constructor. Consider using one of the create() methods for
@@ -1169,6 +1170,9 @@ public class MediaPlayer implements SubtitleController.Listener 
    private native void _start() throws IllegalStateException;



    private boolean isRestricted() {

        if (mBypassInterruptionPolicy) {

            return false;

        }

        try {

            final int usage = mUsage != -1 ? mUsage

                    : AudioAttributes.usageForLegacyStreamType(getAudioStreamType());
@@ -1560,6 +1564,8 @@ public class MediaPlayer implements SubtitleController.Listener 
            throw new IllegalArgumentException(msg);

        }

        mUsage = attributes.getUsage();

        mBypassInterruptionPolicy = (attributes.getFlags()

                & AudioAttributes.FLAG_BYPASS_INTERRUPTION_POLICY) != 0;

        Parcel pattributes = Parcel.obtain();

        attributes.writeToParcel(pattributes, AudioAttributes.FLATTEN_TAGS);

        setParameter(KEY_PARAMETER_AUDIO_ATTRIBUTES, pattributes);