1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.test.hwui; 18 19 import android.app.Activity; 20 import android.graphics.Bitmap; 21 import android.graphics.Matrix; 22 import android.graphics.SurfaceTexture; 23 import android.hardware.Camera; 24 import android.os.Bundle; 25 import android.os.Environment; 26 import android.view.Gravity; 27 import android.view.Surface; 28 import android.view.TextureView; 29 import android.view.View; 30 import android.widget.Button; 31 import android.widget.FrameLayout; 32 33 import java.io.BufferedOutputStream; 34 import java.io.File; 35 import java.io.FileNotFoundException; 36 import java.io.FileOutputStream; 37 import java.io.IOException; 38 39 @SuppressWarnings({"UnusedDeclaration"}) 40 public class TextureViewActivity extends Activity implements TextureView.SurfaceTextureListener { 41 private Camera mCamera; 42 private TextureView mTextureView; 43 private FrameLayout mContent; 44 private Matrix mMatrix = new Matrix(); 45 46 @Override onCreate(Bundle savedInstanceState)47 protected void onCreate(Bundle savedInstanceState) { 48 super.onCreate(savedInstanceState); 49 50 mContent = new FrameLayout(this); 51 52 mTextureView = new TextureView(this); 53 mTextureView.setSurfaceTextureListener(this); 54 mTextureView.setOnClickListener(new View.OnClickListener() { 55 @Override 56 public void onClick(View v) { 57 Bitmap b = mTextureView.getBitmap(800, 800); 58 BufferedOutputStream out = null; 59 try { 60 File dump = new File(Environment.getExternalStorageDirectory(), "out.png"); 61 out = new BufferedOutputStream(new FileOutputStream(dump)); 62 b.compress(Bitmap.CompressFormat.PNG, 100, out); 63 } catch (FileNotFoundException e) { 64 e.printStackTrace(); 65 } finally { 66 if (out != null) try { 67 out.close(); 68 } catch (IOException e) { 69 e.printStackTrace(); 70 } 71 } 72 } 73 }); 74 75 Button button = new Button(this); 76 button.setText("Remove/Add"); 77 button.setOnClickListener(new View.OnClickListener() { 78 private boolean mAdded = true; 79 80 @Override 81 public void onClick(View v) { 82 if (mAdded) { 83 mContent.removeView(mTextureView); 84 } else { 85 mContent.addView(mTextureView); 86 } 87 mAdded = !mAdded; 88 } 89 }); 90 91 mContent.addView(mTextureView, new FrameLayout.LayoutParams( 92 FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT, 93 Gravity.CENTER)); 94 mContent.addView(button, new FrameLayout.LayoutParams( 95 FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT, 96 Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM)); 97 setContentView(mContent); 98 } 99 100 @Override onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height)101 public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) { 102 mCamera = Camera.open(); 103 mCamera.setDisplayOrientation(getCameraOrientation()); 104 105 Camera.Size previewSize = mCamera.getParameters().getPreviewSize(); 106 mTextureView.setLayoutParams(new FrameLayout.LayoutParams( 107 previewSize.width, previewSize.height, Gravity.CENTER)); 108 109 try { 110 mCamera.setPreviewTexture(surface); 111 } catch (IOException t) { 112 android.util.Log.e("TextureView", "Cannot set preview texture target!", t); 113 } 114 115 mCamera.startPreview(); 116 } 117 getCameraOrientation()118 private int getCameraOrientation() { 119 Camera.CameraInfo info = new Camera.CameraInfo(); 120 for (int i = 0; i < Camera.getNumberOfCameras(); i++) { 121 Camera.getCameraInfo(i, info); 122 if (info.facing == Camera.CameraInfo.CAMERA_FACING_BACK) break; 123 } 124 125 int rotation = getDisplay().getRotation(); 126 int degrees = 0; 127 128 switch (rotation) { 129 case Surface.ROTATION_0: 130 degrees = 0; 131 break; 132 case Surface.ROTATION_90: 133 degrees = 90; 134 break; 135 case Surface.ROTATION_180: 136 degrees = 180; 137 break; 138 case Surface.ROTATION_270: 139 degrees = 270; 140 break; 141 } 142 143 return (info.orientation - degrees + 360) % 360; 144 } 145 146 @Override onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height)147 public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) { 148 // Ignored, the Camera does all the work for us 149 } 150 151 @Override onSurfaceTextureDestroyed(SurfaceTexture surface)152 public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) { 153 mCamera.stopPreview(); 154 mCamera.release(); 155 return true; 156 } 157 158 @Override onSurfaceTextureUpdated(SurfaceTexture surface)159 public void onSurfaceTextureUpdated(SurfaceTexture surface) { 160 // Ignored 161 } 162 } 163