Add WebVTT caption renderer (d43daf36) · Commits · e / os / android_frameworks_base

api/current.txt

+3 −3

Original line number	Diff line number	Diff line
		@@ -28991,12 +28991,12 @@ package android.view.accessibility {
		}

		public class CaptioningManager {
		method public void addCaptioningStateChangeListener(android.view.accessibility.CaptioningManager.CaptioningChangeListener);
		method public void addCaptioningChangeListener(android.view.accessibility.CaptioningManager.CaptioningChangeListener);
		method public final float getFontScale();
		method public final java.util.Locale getLocale();
		method public android.view.accessibility.CaptioningManager.CaptionStyle getUserStyle();
		method public final boolean isEnabled();
		method public void removeCaptioningStateChangeListener(android.view.accessibility.CaptioningManager.CaptioningChangeListener);
		method public void removeCaptioningChangeListener(android.view.accessibility.CaptioningManager.CaptioningChangeListener);
		}

		public static final class CaptioningManager.CaptionStyle {
		@@ -29010,7 +29010,7 @@ package android.view.accessibility {
		field public final int foregroundColor;
		}

		public abstract class CaptioningManager.CaptioningChangeListener {
		public static abstract class CaptioningManager.CaptioningChangeListener {
		ctor public CaptioningManager.CaptioningChangeListener();
		method public void onEnabledChanged(boolean);
		method public void onFontScaleChanged(float);

core/java/android/view/accessibility/CaptioningManager.java

+4 −4

Original line number	Diff line number	Diff line
		@@ -140,7 +140,7 @@ public class CaptioningManager {
		*
		* @param listener the listener to add
		*/
		public void addCaptioningStateChangeListener(CaptioningChangeListener listener) {
		public void addCaptioningChangeListener(CaptioningChangeListener listener) {
		synchronized (mListeners) {
		if (mListeners.isEmpty()) {
		registerObserver(Secure.ACCESSIBILITY_CAPTIONING_ENABLED);
		@@ -163,11 +163,11 @@ public class CaptioningManager {

		/**
		* Removes a listener previously added using
		* {@link #addCaptioningStateChangeListener}.
		* {@link #addCaptioningChangeListener}.
		*
		* @param listener the listener to remove
		*/
		public void removeCaptioningStateChangeListener(CaptioningChangeListener listener) {
		public void removeCaptioningChangeListener(CaptioningChangeListener listener) {
		synchronized (mListeners) {
		mListeners.remove(listener);

		@@ -366,7 +366,7 @@ public class CaptioningManager {
		* Listener for changes in captioning properties, including enabled state
		* and user style preferences.
		*/
		public abstract class CaptioningChangeListener {
		public static abstract class CaptioningChangeListener {
		/**
		* Called when the captioning enabled state changes.
		*

core/java/android/widget/VideoView.java

+68 −94

Original line number	Diff line number	Diff line
		@@ -30,6 +30,7 @@ import android.media.MediaPlayer.OnErrorListener;
		import android.media.MediaPlayer.OnInfoListener;
		import android.media.Metadata;
		import android.media.SubtitleController;
		import android.media.SubtitleTrack.RenderingWidget;
		import android.media.WebVttRenderer;
		import android.net.Uri;
		import android.util.AttributeSet;
		@@ -46,7 +47,6 @@ import android.widget.MediaController.MediaPlayerControl;

		import java.io.IOException;
		import java.io.InputStream;
		import java.util.ArrayList;
		import java.util.Map;
		import java.util.Vector;

		@@ -100,14 +100,11 @@ public class VideoView extends SurfaceView
		private boolean mCanSeekBack;
		private boolean mCanSeekForward;

		/** List of views overlaid on top of the video. */
		private ArrayList<View> mOverlays;
		/** Subtitle rendering widget overlaid on top of the video. */
		private RenderingWidget mSubtitleWidget;

		/**
		* Listener for overlay layout changes. Invalidates the video view to ensure
		* that captions are redrawn whenever their layout changes.
		*/
		private OnLayoutChangeListener mOverlayLayoutListener;
		/** Listener for changes to subtitle data, used to redraw when needed. */
		private RenderingWidget.OnChangedListener mSubtitlesChangedListener;

		public VideoView(Context context) {
		super(context);
		@@ -302,11 +299,10 @@ public class VideoView extends SurfaceView
		mMediaPlayer = new MediaPlayer();
		// TODO: create SubtitleController in MediaPlayer, but we need
		// a context for the subtitle renderers
		SubtitleController controller = new SubtitleController(
		getContext(),
		mMediaPlayer.getMediaTimeProvider(),
		mMediaPlayer);
		controller.registerRenderer(new WebVttRenderer(getContext(), null));
		final Context context = getContext();
		final SubtitleController controller = new SubtitleController(
		context, mMediaPlayer.getMediaTimeProvider(), mMediaPlayer);
		controller.registerRenderer(new WebVttRenderer(context));
		mMediaPlayer.setSubtitleAnchor(controller, this);

		if (mAudioSession != 0) {
		@@ -792,117 +788,95 @@ public class VideoView extends SurfaceView
		}

		@Override
		protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
		super.onLayout(changed, left, top, right, bottom);
		protected void onAttachedToWindow() {
		super.onAttachedToWindow();

		// Layout overlay views, if necessary.
		if (changed && mOverlays != null && !mOverlays.isEmpty()) {
		measureAndLayoutOverlays();
		if (mSubtitleWidget != null) {
		mSubtitleWidget.onAttachedToWindow();
		}
		}

		@Override
		public void draw(Canvas canvas) {
		super.draw(canvas);
		protected void onDetachedFromWindow() {
		super.onDetachedFromWindow();

		final int count = mOverlays.size();
		for (int i = 0; i < count; i++) {
		final View overlay = mOverlays.get(i);
		overlay.draw(canvas);
		if (mSubtitleWidget != null) {
		mSubtitleWidget.onDetachedFromWindow();
		}
		}

		/**
		* Adds a view to be overlaid on top of this video view. During layout, the
		* view will be forced to match the bounds, less padding, of the video view.
		* <p>
		* Overlays are drawn in the order they are added. The last added overlay
		* will be drawn on top.
		*
		* @param overlay the view to overlay
		* @see #removeOverlay(View)
		*/
		private void addOverlay(View overlay) {
		if (mOverlays == null) {
		mOverlays = new ArrayList<View>(1);
		}

		if (mOverlayLayoutListener == null) {
		mOverlayLayoutListener = new OnLayoutChangeListener() {
		@Override
		public void onLayoutChange(View v, int left, int top, int right, int bottom,
		int oldLeft, int oldTop, int oldRight, int oldBottom) {
		invalidate();
		}
		};
		}

		if (mOverlays.isEmpty()) {
		setWillNotDraw(false);
		}
		protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
		super.onLayout(changed, left, top, right, bottom);

		mOverlays.add(overlay);
		overlay.addOnLayoutChangeListener(mOverlayLayoutListener);
		measureAndLayoutOverlays();
		if (mSubtitleWidget != null) {
		measureAndLayoutSubtitleWidget();
		}

		/**
		* Removes a view previously added using {@link #addOverlay}.
		*
		* @param overlay the view to remove
		* @see #addOverlay(View)
		*/
		private void removeOverlay(View overlay) {
		if (mOverlays == null) {
		return;
		}

		overlay.removeOnLayoutChangeListener(mOverlayLayoutListener);
		mOverlays.remove(overlay);
		@Override
		public void draw(Canvas canvas) {
		super.draw(canvas);

		if (mOverlays.isEmpty()) {
		setWillNotDraw(true);
		if (mSubtitleWidget != null) {
		final int saveCount = canvas.save();
		canvas.translate(getPaddingLeft(), getPaddingTop());
		mSubtitleWidget.draw(canvas);
		canvas.restoreToCount(saveCount);
		}

		invalidate();
		}

		/**
		* Forces a measurement and layout pass for all overlaid views.
		*
		* @see #addOverlay(View)
		* @see #setSubtitleWidget(RenderingWidget)
		*/
		private void measureAndLayoutOverlays() {
		final int left = getPaddingLeft();
		final int top = getPaddingTop();
		final int right = getWidth() - left - getPaddingRight();
		final int bottom = getHeight() - top - getPaddingBottom();
		final int widthSpec = MeasureSpec.makeMeasureSpec(right - left, MeasureSpec.EXACTLY);
		final int heightSpec = MeasureSpec.makeMeasureSpec(bottom - top, MeasureSpec.EXACTLY);
		private void measureAndLayoutSubtitleWidget() {
		final int width = getWidth() - getPaddingLeft() - getPaddingRight();
		final int height = getHeight() - getPaddingTop() - getPaddingBottom();

		final int count = mOverlays.size();
		for (int i = 0; i < count; i++) {
		final View overlay = mOverlays.get(i);
		overlay.measure(widthSpec, heightSpec);
		overlay.layout(left, top, right, bottom);
		}
		mSubtitleWidget.setSize(width, height);
		}

		/** @hide */
		@Override
		public void setSubtitleView(View view) {
		if (mSubtitleView == view) {
		public void setSubtitleWidget(RenderingWidget subtitleWidget) {
		if (mSubtitleWidget == subtitleWidget) {
		return;
		}

		if (mSubtitleView != null) {
		removeOverlay(mSubtitleView);
		final boolean attachedToWindow = isAttachedToWindow();
		if (mSubtitleWidget != null) {
		if (attachedToWindow) {
		mSubtitleWidget.onDetachedFromWindow();
		}

		mSubtitleWidget.setOnChangedListener(null);
		}

		mSubtitleWidget = subtitleWidget;

		if (subtitleWidget != null) {
		if (mSubtitlesChangedListener == null) {
		mSubtitlesChangedListener = new RenderingWidget.OnChangedListener() {
		@Override
		public void onChanged(RenderingWidget renderingWidget) {
		invalidate();
		}
		};
		}
		mSubtitleView = view;
		if (mSubtitleView != null) {
		addOverlay(mSubtitleView);

		setWillNotDraw(false);
		subtitleWidget.setOnChangedListener(mSubtitlesChangedListener);

		if (attachedToWindow) {
		subtitleWidget.onAttachedToWindow();
		requestLayout();
		}
		} else {
		setWillNotDraw(true);
		}

		private View mSubtitleView;
		invalidate();
		}
		}

core/java/com/android/internal/widget/SubtitleView.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -74,6 +74,10 @@ public class SubtitleView extends View {
		private float mSpacingAdd = 0;
		private int mInnerPaddingX = 0;

		public SubtitleView(Context context) {
		this(context, null);
		}

		public SubtitleView(Context context, AttributeSet attrs) {
		this(context, attrs, 0);
		}

media/java/android/media/SubtitleController.java

+11 −15

Original line number	Diff line number	Diff line
		@@ -20,8 +20,7 @@ import java.util.Locale;
		import java.util.Vector;

		import android.content.Context;
		import android.media.MediaPlayer.OnSubtitleDataListener;
		import android.view.View;
		import android.media.SubtitleTrack.RenderingWidget;
		import android.view.accessibility.CaptioningManager;

		/**
		@@ -32,7 +31,6 @@ import android.view.accessibility.CaptioningManager;
		* @hide
		*/
		public class SubtitleController {
		private Context mContext;
		private MediaTimeProvider mTimeProvider;
		private Vector<Renderer> mRenderers;
		private Vector<SubtitleTrack> mTracks;
		@@ -50,7 +48,6 @@ public class SubtitleController {
		Context context,
		MediaTimeProvider timeProvider,
		Listener listener) {
		mContext = context;
		mTimeProvider = timeProvider;
		mListener = listener;

		@@ -79,11 +76,11 @@ public class SubtitleController {
		return mSelectedTrack;
		}

		private View getSubtitleView() {
		private RenderingWidget getRenderingWidget() {
		if (mSelectedTrack == null) {
		return null;
		}
		return mSelectedTrack.getView();
		return mSelectedTrack.getRenderingWidget();
		}

		/**
		@@ -110,7 +107,7 @@ public class SubtitleController {
		}

		mSelectedTrack = track;
		mAnchor.setSubtitleView(getSubtitleView());
		mAnchor.setSubtitleWidget(getRenderingWidget());

		if (mSelectedTrack != null) {
		mSelectedTrack.setTimeProvider(mTimeProvider);
		@@ -268,17 +265,16 @@ public class SubtitleController {
		}

		/**
		* Subtitle anchor, an object that is able to display a subtitle view,
		* Subtitle anchor, an object that is able to display a subtitle renderer,
		* e.g. a VideoView.
		*/
		public interface Anchor {
		/**
		* Anchor should set the subtitle view to the supplied view,
		* or none, if the supplied view is null.
		*
		* @param view subtitle view, or null
		* Anchor should use the supplied subtitle rendering widget, or
		* none if it is null.
		* @hide
		*/
		public void setSubtitleView(View view);
		public void setSubtitleWidget(RenderingWidget subtitleWidget);
		}

		private Anchor mAnchor;
		@@ -290,11 +286,11 @@ public class SubtitleController {
		}

		if (mAnchor != null) {
		mAnchor.setSubtitleView(null);
		mAnchor.setSubtitleWidget(null);
		}
		mAnchor = anchor;
		if (mAnchor != null) {
		mAnchor.setSubtitleView(getSubtitleView());
		mAnchor.setSubtitleWidget(getRenderingWidget());
		}
		}