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Commit d88bcb6d authored by Iván Budnik's avatar Iván Budnik
Browse files

Add logging to MediaSessionStack 

This logs changes to the session priority stack.

Bug: 205124386
Test: adb shell dumpsys media_session
Change-Id: I996f4fc7ea5bcb8e5fcb5f7c317021d1df405753
parent a102938c

services/core/java/com/android/server/media/MediaSessionStack.java

+23 −0
Original line number Diff line number Diff line
@@ -24,6 +24,8 @@ import android.os.UserHandle; 
import android.util.Log;

import android.util.SparseArray;



import com.android.server.utils.EventLogger;



import java.io.PrintWriter;

import java.util.ArrayList;

import java.util.List;
@@ -38,6 +40,8 @@ class MediaSessionStack { 
    private static final boolean DEBUG = MediaSessionService.DEBUG;

    private static final String TAG = "MediaSessionStack";



    private static final int DUMP_EVENTS_MAX_COUNT = 70;



    /**

     * Listen the change in the media button session.

     */
@@ -57,6 +61,8 @@ class MediaSessionStack { 
    private final AudioPlayerStateMonitor mAudioPlayerStateMonitor;

    private final OnMediaButtonSessionChangedListener mOnMediaButtonSessionChangedListener;



    private final EventLogger mEventLogger = new EventLogger(DUMP_EVENTS_MAX_COUNT, TAG);



    /**

     * The media button session which receives media key events.

     * It could be null if the previous media button session is released.
@@ -80,6 +86,11 @@ class MediaSessionStack { 
     * @param record The record to add.

     */

    public void addSession(MediaSessionRecordImpl record) {

        mEventLogger.enqueue(EventLogger.StringEvent.from(

                "addSession() (to bottom of stack)",

                "record: %s",

                record

        ));

        mSessions.add(record);

        clearCache(record.getUserId());
@@ -95,6 +106,11 @@ class MediaSessionStack { 
     * @param record The record to remove.

     */

    public void removeSession(MediaSessionRecordImpl record) {

        mEventLogger.enqueue(EventLogger.StringEvent.from(

                "removeSession()",

                "record: %s",

                record

        ));

        mSessions.remove(record);

        if (mMediaButtonSession == record) {

            // When the media button session is removed, nullify the media button session and do not
@@ -140,6 +156,11 @@ class MediaSessionStack { 
    public void onPlaybackStateChanged(

            MediaSessionRecordImpl record, boolean shouldUpdatePriority) {

        if (shouldUpdatePriority) {

            mEventLogger.enqueue(EventLogger.StringEvent.from(

                    "onPlaybackStateChanged() - Pushing session to top",

                    "record: %s",

                    record

            ));

            mSessions.remove(record);

            mSessions.add(0, record);

            clearCache(record.getUserId());
@@ -344,6 +365,8 @@ class MediaSessionStack { 
        for (MediaSessionRecordImpl record : mSessions) {

            record.dump(pw, indent);

        }

        pw.println(prefix + "Session stack events:");

        mEventLogger.dump(pw, indent);

    }



    /**