| /* |
| * 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 com.android.test.hwui; |
| |
| import android.app.Activity; |
| import android.graphics.Bitmap; |
| import android.hardware.Camera; |
| import android.os.Bundle; |
| import android.os.Environment; |
| import android.view.Gravity; |
| import android.view.PixelCopy; |
| import android.view.Surface; |
| import android.view.SurfaceHolder; |
| import android.view.SurfaceView; |
| import android.view.View; |
| import android.widget.Button; |
| import android.widget.FrameLayout; |
| import android.widget.Toast; |
| |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| |
| public class GetBitmapSurfaceViewActivity extends Activity implements SurfaceHolder.Callback { |
| private Camera mCamera; |
| private SurfaceView mSurfaceView; |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| FrameLayout content = new FrameLayout(this); |
| |
| mSurfaceView = new SurfaceView(this); |
| mSurfaceView.getHolder().addCallback(this); |
| |
| Button button = new Button(this); |
| button.setText("Copy bitmap to /sdcard/surfaceview.png"); |
| button.setOnClickListener((View v) -> { |
| final Bitmap b = Bitmap.createBitmap( |
| mSurfaceView.getWidth(), mSurfaceView.getHeight(), |
| Bitmap.Config.ARGB_8888); |
| PixelCopy.request(mSurfaceView, b, |
| (int result) -> { |
| if (result != PixelCopy.SUCCESS) { |
| Toast.makeText(GetBitmapSurfaceViewActivity.this, |
| "Failed to copy", Toast.LENGTH_SHORT).show(); |
| return; |
| } |
| try { |
| try (FileOutputStream out = new FileOutputStream( |
| Environment.getExternalStorageDirectory() + "/surfaceview.png");) { |
| b.compress(Bitmap.CompressFormat.PNG, 100, out); |
| } |
| } catch (Exception e) { |
| // Ignore |
| } |
| }, mSurfaceView.getHandler()); |
| }); |
| |
| content.addView(mSurfaceView, new FrameLayout.LayoutParams(500, 400, Gravity.CENTER)); |
| content.addView(button, new FrameLayout.LayoutParams( |
| FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT, |
| Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM)); |
| setContentView(content); |
| } |
| |
| @Override |
| public void surfaceCreated(SurfaceHolder holder) { |
| mCamera = Camera.open(); |
| |
| try { |
| mCamera.setPreviewSurface(holder.getSurface()); |
| } catch (IOException t) { |
| android.util.Log.e("TextureView", "Cannot set preview texture target!", t); |
| } |
| |
| setCameraDisplayOrientation(this, 0, mCamera); |
| mCamera.startPreview(); |
| } |
| |
| public static void setCameraDisplayOrientation(Activity activity, |
| int cameraId, android.hardware.Camera camera) { |
| android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo(); |
| android.hardware.Camera.getCameraInfo(cameraId, info); |
| int rotation = activity.getWindowManager().getDefaultDisplay() |
| .getRotation(); |
| int degrees = 0; |
| switch (rotation) { |
| case Surface.ROTATION_0: |
| degrees = 0; |
| break; |
| case Surface.ROTATION_90: |
| degrees = 90; |
| break; |
| case Surface.ROTATION_180: |
| degrees = 180; |
| break; |
| case Surface.ROTATION_270: |
| degrees = 270; |
| break; |
| } |
| |
| int result; |
| if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { |
| result = (info.orientation + degrees) % 360; |
| result = (360 - result) % 360; // compensate the mirror |
| } else { // back-facing |
| result = (info.orientation - degrees + 360) % 360; |
| } |
| camera.setDisplayOrientation(result); |
| } |
| |
| @Override |
| public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { |
| } |
| |
| @Override |
| public void surfaceDestroyed(SurfaceHolder holder) { |
| mCamera.stopPreview(); |
| mCamera.release(); |
| } |
| } |