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Commit f7f608cc authored by James Wei's avatar James Wei
Browse files

MTP: media info can not be retrieved via MTP 

Under the new MtpStorageManager design of Android P,
media info like MP3 Track title, album and artist, Genre, etc
can not be retrieved via MTP
by Windows Media Player, Linux Rhythmbox and BMW Car Kit

Bug: 112635346
Test: Windows Media Player
Test: Linux Rhythmbox

Change-Id: Ibbdaff52a24fa36c6090e799323b767dd5692207
(cherry picked from commit 7784da12b9b3394beb791b16befcd33075668270)
parent 9aac06cc

media/java/android/mtp/MtpDatabase.java

+6 −1
Original line number Diff line number Diff line
@@ -538,8 +538,13 @@ public class MtpDatabase implements AutoCloseable { 
        MtpPropertyGroup propertyGroup;

        for (MtpStorageManager.MtpObject obj : objs) {

            if (property == 0xffffffff) {

                if (format == 0 && handle != 0 && handle != 0xffffffff) {

                    // return properties based on the object's format

                    format = obj.getFormat();

                }

                // Get all properties supported by this object

                propertyGroup = mPropertyGroupsByFormat.get(obj.getFormat());

                // format should be the same between get & put

                propertyGroup = mPropertyGroupsByFormat.get(format);

                if (propertyGroup == null) {

                    int[] propertyList = getSupportedObjectProperties(format);

                    propertyGroup = new MtpPropertyGroup(mMediaProvider, mVolumeName,