Add error checking to LayerRenderer::copyLayer

This method is invoked by TextureView.getBitmap() and failures must be
caught to avoid leaving the GL context in a potentially bad state.

Change-Id: I620de395ba1bc20154de58c81963223dc55cac78
diff --git a/tests/HwAccelerationTest/AndroidManifest.xml b/tests/HwAccelerationTest/AndroidManifest.xml
index d5dcd4e..c650021 100644
--- a/tests/HwAccelerationTest/AndroidManifest.xml
+++ b/tests/HwAccelerationTest/AndroidManifest.xml
@@ -31,6 +31,15 @@
         android:hardwareAccelerated="true">
 
         <activity
+                android:name="GetBitmapActivity"
+                android:label="_GetBitmap">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        
+        <activity
                 android:name="SmallCircleActivity"
                 android:label="_SmallCircle">
             <intent-filter>
diff --git a/tests/HwAccelerationTest/src/com/android/test/hwui/GetBitmapActivity.java b/tests/HwAccelerationTest/src/com/android/test/hwui/GetBitmapActivity.java
new file mode 100644
index 0000000..2e23aaa
--- /dev/null
+++ b/tests/HwAccelerationTest/src/com/android/test/hwui/GetBitmapActivity.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2011 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.graphics.SurfaceTexture;
+import android.hardware.Camera;
+import android.os.Bundle;
+import android.os.Environment;
+import android.view.Gravity;
+import android.view.TextureView;
+import android.view.View;
+import android.widget.Button;
+import android.widget.FrameLayout;
+
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+
+@SuppressWarnings({"UnusedDeclaration"})
+public class GetBitmapActivity extends Activity implements TextureView.SurfaceTextureListener {
+    private Camera mCamera;
+    private TextureView mTextureView;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        FrameLayout content = new FrameLayout(this);
+
+        mTextureView = new TextureView(this);
+        mTextureView.setSurfaceTextureListener(this);
+
+        Button button = new Button(this);
+        button.setText("Copy bitmap to /sdcard/textureview.png");
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Bitmap b = mTextureView.getBitmap();
+                try {
+                    FileOutputStream out = new FileOutputStream(
+                            Environment.getExternalStorageDirectory() + "/textureview.png");
+                    try {
+                        b.compress(Bitmap.CompressFormat.PNG, 100, out);
+                    } finally {
+                        try {
+                            out.close();
+                        } catch (IOException e) {
+                            // Ignore
+                        }
+                    }
+                } catch (FileNotFoundException e) {
+                    // Ignore
+                }
+            }
+        });
+
+        content.addView(mTextureView, 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 onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
+        mCamera = Camera.open();
+
+        try {
+            mCamera.setPreviewTexture(surface);
+        } catch (IOException t) {
+            android.util.Log.e("TextureView", "Cannot set preview texture target!", t);
+        }
+
+        mCamera.startPreview();
+    }
+
+    @Override
+    public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
+        // Ignored, the Camera does all the work for us
+    }
+
+    @Override
+    public void onSurfaceTextureDestroyed(SurfaceTexture surface) {
+        mCamera.stopPreview();
+        mCamera.release();
+    }
+}