| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except |
| * in compliance with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package androidx.leanback.app; |
| |
| import android.os.Bundle; |
| import android.view.LayoutInflater; |
| import android.view.SurfaceHolder; |
| import android.view.SurfaceView; |
| import android.view.View; |
| import android.view.ViewGroup; |
| |
| import androidx.leanback.R; |
| |
| /** |
| * Subclass of {@link PlaybackSupportFragment} that is responsible for providing a {@link SurfaceView} |
| * and rendering video. |
| */ |
| public class VideoSupportFragment extends PlaybackSupportFragment { |
| static final int SURFACE_NOT_CREATED = 0; |
| static final int SURFACE_CREATED = 1; |
| |
| SurfaceView mVideoSurface; |
| SurfaceHolder.Callback mMediaPlaybackCallback; |
| |
| int mState = SURFACE_NOT_CREATED; |
| |
| @Override |
| public View onCreateView( |
| LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { |
| ViewGroup root = (ViewGroup) super.onCreateView(inflater, container, savedInstanceState); |
| mVideoSurface = (SurfaceView) LayoutInflater.from(getContext()).inflate( |
| R.layout.lb_video_surface, root, false); |
| root.addView(mVideoSurface, 0); |
| mVideoSurface.getHolder().addCallback(new SurfaceHolder.Callback() { |
| |
| @Override |
| public void surfaceCreated(SurfaceHolder holder) { |
| if (mMediaPlaybackCallback != null) { |
| mMediaPlaybackCallback.surfaceCreated(holder); |
| } |
| mState = SURFACE_CREATED; |
| } |
| |
| @Override |
| public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { |
| if (mMediaPlaybackCallback != null) { |
| mMediaPlaybackCallback.surfaceChanged(holder, format, width, height); |
| } |
| } |
| |
| @Override |
| public void surfaceDestroyed(SurfaceHolder holder) { |
| if (mMediaPlaybackCallback != null) { |
| mMediaPlaybackCallback.surfaceDestroyed(holder); |
| } |
| mState = SURFACE_NOT_CREATED; |
| } |
| }); |
| setBackgroundType(PlaybackSupportFragment.BG_LIGHT); |
| return root; |
| } |
| |
| /** |
| * Adds {@link SurfaceHolder.Callback} to {@link android.view.SurfaceView}. |
| */ |
| public void setSurfaceHolderCallback(SurfaceHolder.Callback callback) { |
| mMediaPlaybackCallback = callback; |
| |
| if (callback != null) { |
| if (mState == SURFACE_CREATED) { |
| mMediaPlaybackCallback.surfaceCreated(mVideoSurface.getHolder()); |
| } |
| } |
| } |
| |
| @Override |
| protected void onVideoSizeChanged(int width, int height) { |
| int screenWidth = getView().getWidth(); |
| int screenHeight = getView().getHeight(); |
| |
| ViewGroup.LayoutParams p = mVideoSurface.getLayoutParams(); |
| if (screenWidth * height > width * screenHeight) { |
| // fit in screen height |
| p.height = screenHeight; |
| p.width = screenHeight * width / height; |
| } else { |
| // fit in screen width |
| p.width = screenWidth; |
| p.height = screenWidth * height / width; |
| } |
| mVideoSurface.setLayoutParams(p); |
| } |
| |
| /** |
| * Returns the surface view. |
| */ |
| public SurfaceView getSurfaceView() { |
| return mVideoSurface; |
| } |
| |
| @Override |
| public void onDestroyView() { |
| mVideoSurface = null; |
| mState = SURFACE_NOT_CREATED; |
| super.onDestroyView(); |
| } |
| } |