Bug 5045498 Implementation of RemoteControlClient.MetadataEditor (4da5eeff) · Commits · e / os / android_frameworks_base

media/java/android/media/RemoteControlClient.java

+131 −88

Original line number	Diff line number	Diff line
		@@ -240,50 +240,25 @@ public class RemoteControlClient
		* Class used to modify metadata in a {@link RemoteControlClient} object.
		*/
		public class MetadataEditor {
		protected boolean mMetadataChanged;
		protected boolean mArtworkChanged;
		protected Bitmap mEditorArtwork;
		protected Bundle mEditorMetadata;
		private boolean mApplied = false;

		private MetadataEditor() { /* only use factory */ }

		public MetadataEditor putString(int key, String value) {
		return this;
		}

		public MetadataEditor putBitmap(int key, Bitmap bitmap) {
		return this;
		}

		public void clear() {

		}

		public void apply() {

		}
		}

		public MetadataEditor editMetadata(boolean startEmpty) {
		return (new MetadataEditor());
		}


		// only use RemoteControlClient.editMetadata() to get a MetadataEditor instance
		private MetadataEditor() { }
		/**
		* @hide
		* FIXME migrate this functionality under MetadataEditor
		* Start collecting information to be displayed.
		* Use {@link #commitMetadata()} to signal the end of the collection which has been created
		* through one or multiple calls to {@link #addMetadataString(int, int, String)}.
		*/
		public void startMetadata() {
		synchronized(mCacheLock) {
		mMetadata.clear();
		}
		public Object clone() throws CloneNotSupportedException {
		throw new CloneNotSupportedException();
		}

		/**
		* @hide
		* FIXME migrate this functionality under MetadataEditor
		* Adds textual information to be displayed.
		* Note that none of the information added before {@link #startMetadata()},
		* and after {@link #commitMetadata()} has been called, will be displayed.
		* Note that none of the information added after {@link #apply()} has been called,
		* will be displayed.
		* @param key the identifier of a the metadata field to set. Valid values are
		* {@link android.media.MediaMetadataRetriever#METADATA_KEY_ALBUM},
		* {@link android.media.MediaMetadataRetriever#METADATA_KEY_ALBUMARTIST},
		@@ -300,49 +275,113 @@ public class RemoteControlClient
		* {@link android.media.MediaMetadataRetriever#METADATA_KEY_TITLE},
		* {@link android.media.MediaMetadataRetriever#METADATA_KEY_WRITER},
		* {@link android.media.MediaMetadataRetriever#METADATA_KEY_YEAR}.
		* @param value the String for the field value, or null to signify there is no valid
		* @param value the text for the given key, or null to signify there is no valid
		* information for the field.
		* @return FIXME description
		*/
		public void addMetadataString(int key, String value) {
		synchronized(mCacheLock) {
		// store locally
		mMetadata.putString(String.valueOf(key), value);
		public synchronized MetadataEditor putString(int key, String value) {
		if (mApplied) {
		Log.e(TAG, "Can't edit a previously applied MetadataEditor");
		return this;
		}
		mEditorMetadata.putString(String.valueOf(key), value);
		mMetadataChanged = true;
		return this;
		}

		/**
		* @hide
		* FIXME migrate this functionality under MetadataEditor
		* Marks all the metadata previously set with {@link #addMetadataString(int, int, String)} as
		* eligible to be displayed.
		* The metadata key for the content artwork / album art.
		*/
		public void commitMetadata() {
		synchronized(mCacheLock) {
		// send to remote control display if conditions are met
		sendMetadata_syncCacheLock();
		}
		}
		public final int METADATA_KEY_ARTWORK = 100;

		/**
		* @hide
		* FIXME migrate this functionality under MetadataEditor
		* Sets the album / artwork picture to be displayed on the remote control.
		* @param artwork the bitmap for the artwork, or null if there isn't any.
		* @param key FIXME description
		* @param bitmap the bitmap for the artwork, or null if there isn't any.
		* @return FIXME description
		* @see android.graphics.Bitmap
		*/
		public void setArtwork(Bitmap artwork) {
		synchronized(mCacheLock) {
		// resize and store locally
		if (mArtworkExpectedWidth > 0) {
		mArtwork = scaleBitmapIfTooBig(artwork,
		public synchronized MetadataEditor putBitmap(int key, Bitmap bitmap) {
		if (mApplied) {
		Log.e(TAG, "Can't edit a previously applied MetadataEditor");
		return this;
		}
		if (key != METADATA_KEY_ARTWORK) {
		return this;
		}
		if ((mArtworkExpectedWidth > 0) && (mArtworkExpectedHeight > 0)) {
		mEditorArtwork = scaleBitmapIfTooBig(bitmap,
		mArtworkExpectedWidth, mArtworkExpectedHeight);
		} else {
		// no valid resize dimensions, store as is
		mArtwork = artwork;
		mEditorArtwork = bitmap;
		}
		mArtworkChanged = true;
		return this;
		}

		/**
		* FIXME description
		*/
		public synchronized void clear() {
		if (mApplied) {
		Log.e(TAG, "Can't clear a previously applied MetadataEditor");
		return;
		}
		mEditorMetadata.clear();
		mEditorArtwork = null;
		}

		/**
		* FIXME description
		*/
		public synchronized void apply() {
		if (mApplied) {
		Log.e(TAG, "Can't apply a previously applied MetadataEditor");
		return;
		}
		synchronized(mCacheLock) {
		// assign the edited data
		mMetadata = new Bundle(mEditorMetadata);
		mArtwork = mEditorArtwork;
		if (mMetadataChanged & mArtworkChanged) {
		// FIXME the following two send methods need to be combined in a single call
		// that pushes the metadata and artwork in one binder call
		// send to remote control display if conditions are met
		sendMetadata_syncCacheLock();
		// send to remote control display if conditions are met
		sendArtwork_syncCacheLock();
		} else if (mMetadataChanged) {
		// send to remote control display if conditions are met
		sendMetadata_syncCacheLock();
		} else if (mArtworkChanged) {
		// send to remote control display if conditions are met
		sendArtwork_syncCacheLock();
		}
		mApplied = true;
		}
		}
		}

		/**
		* FIXME description
		* @param startEmpty
		* @return
		*/
		public MetadataEditor editMetadata(boolean startEmpty) {
		MetadataEditor editor = new MetadataEditor();
		if (startEmpty) {
		editor.mEditorMetadata = new Bundle();
		editor.mEditorArtwork = null;
		editor.mMetadataChanged = true;
		editor.mArtworkChanged = true;
		} else {
		editor.mEditorMetadata = new Bundle(mMetadata);
		editor.mEditorArtwork = mArtwork;
		editor.mMetadataChanged = false;
		editor.mArtworkChanged = false;
		}
		return editor;
		}

		/**
		@@ -402,6 +441,9 @@ public class RemoteControlClient
		/**
		* Cache for the artwork bitmap.
		* Access synchronized on mCacheLock
		* Artwork and metadata are not kept in one Bundle because the bitmap sometimes needs to be
		* accessed to be resized, in which case a copy will be made. This would add overhead in
		* Bundle operations.
		*/
		private Bitmap mArtwork;
		private final int ARTWORK_DEFAULT_SIZE = 256;
		@@ -417,6 +459,7 @@ public class RemoteControlClient
		* Access synchronized on mCacheLock
		*/
		private Bundle mMetadata = new Bundle();

		/**
		* The current remote control client generation ID across the system
		*/