Basic camera preview on Camera1

Change-Id: Iace32d2a230016229b60084bfe060c4ec7bca8b5

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.1.0-alpha3'
+        classpath 'com.android.tools.build:gradle:2.1.0-alpha4'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

demo/src/main/AndroidManifest.xml

@@ -14,12 +14,14 @@
 <manifest package="com.google.android.cameraview.demo"
           xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <uses-permission android:name="android.permission.CAMERA"/>
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme">
+        android:theme="@style/Theme.Demo">
 
         <activity android:name=".MainActivity">
             <intent-filter>

demo/src/main/java/com/google/android/cameraview/demo/MainActivity.java

@@ -16,15 +16,34 @@
 
 package com.google.android.cameraview.demo;
 
+import com.google.android.cameraview.CameraView;
+
 import android.os.Bundle;
 import android.support.v7.app.AppCompatActivity;
 
 public class MainActivity extends AppCompatActivity {
 
+    private CameraView mCameraView;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+        mCameraView = (CameraView) findViewById(R.id.camera);
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        mCameraView.onResume();
+        mCameraView.startPreview();
+    }
+
+    @Override
+    protected void onPause() {
+        mCameraView.stopPreview();
+        mCameraView.onPause();
+        super.onPause();
     }
 
 }

demo/src/main/res/values/styles.xml

@@ -14,7 +14,7 @@
 <resources>
 
     <!-- Base application theme. -->
-    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+    <style name="Theme.Demo" parent="Theme.AppCompat.Light.NoActionBar">
         <!-- Customize your theme here. -->
         <item name="colorPrimary">@color/primary</item>
         <item name="colorPrimaryDark">@color/primaryDark</item>

library/build.gradle

@@ -29,6 +29,11 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+    sourceSets {
+        main.java.srcDirs += 'src/main/base'
+        main.java.srcDirs += 'src/main/camera1'
+        main.java.srcDirs += 'src/main/camera2'
+    }
 }
 
 dependencies {

library/src/androidTest/AndroidManifest.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    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.
+-->
+<manifest package="com.google.android.cameraview"
+          xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <uses-permission android:name="android.permission.CAMERA"/>
+
+    <application>
+        <activity android:name=".CameraViewActivity"/>
+    </application>
+
+</manifest>

library/src/androidTest/java/com/google/android/cameraview/CameraViewActivity.java

@@ -0,0 +1,47 @@
+/*
+ * 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.google.android.cameraview;
+
+import android.app.Activity;
+import android.os.Bundle;
+
+public class CameraViewActivity extends Activity {
+
+    private CameraView mCameraView;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_camera_view);
+        mCameraView = (CameraView) findViewById(R.id.camera);
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        mCameraView.onResume();
+        mCameraView.startPreview();
+    }
+
+    @Override
+    protected void onPause() {
+        mCameraView.stopPreview();
+        mCameraView.onPause();
+        super.onPause();
+    }
+
+}

library/src/androidTest/java/com/google/android/cameraview/CameraViewTest.java

@@ -16,30 +16,83 @@
 
 package com.google.android.cameraview;
 
+import org.hamcrest.Matcher;
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.runner.RunWith;
 
-import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.annotation.UiThreadTest;
-import android.support.test.rule.UiThreadTestRule;
+import android.graphics.Bitmap;
+import android.os.SystemClock;
+import android.support.test.espresso.NoMatchingViewException;
+import android.support.test.espresso.UiController;
+import android.support.test.espresso.ViewAction;
+import android.support.test.espresso.ViewAssertion;
+import android.support.test.rule.ActivityTestRule;
+import android.support.test.runner.AndroidJUnit4;
+import android.view.TextureView;
+import android.view.View;
 
-import static org.hamcrest.CoreMatchers.is;
-import static org.junit.Assert.assertThat;
+import static android.support.test.espresso.Espresso.onView;
+import static android.support.test.espresso.assertion.ViewAssertions.matches;
+import static android.support.test.espresso.matcher.ViewMatchers.isDisplayed;
+import static android.support.test.espresso.matcher.ViewMatchers.withId;
+import static junit.framework.Assert.assertFalse;
 
+@RunWith(AndroidJUnit4.class)
 public class CameraViewTest {
 
-    public final UiThreadTestRule rule;
+    @Rule
+    public final ActivityTestRule<CameraViewActivity> rule;
 
     public CameraViewTest() {
-        rule = new UiThreadTestRule();
+        rule = new ActivityTestRule<>(CameraViewActivity.class);
     }
 
     @Test
-    @UiThreadTest
-    public void testConstructor() {
-        Context context = InstrumentationRegistry.getTargetContext();
-        CameraView cameraView = new CameraView(context);
-        assertThat(cameraView.getChildCount(), is(0));
+    public void testSetup() {
+        onView(withId(R.id.camera))
+                .check(matches(isDisplayed()));
+        onView(withId(R.id.texture_view))
+                .check(matches(isDisplayed()));
+    }
+
+    @Test
+    public void preview_isShowing() {
+        onView(withId(R.id.texture_view))
+                .check(matches(isDisplayed()))
+                // TODO: Replace below with an IdlingCallback when state listener is implemented
+                .perform(new WaitAction())
+                .check(new ViewAssertion() {
+                    @Override
+                    public void check(View view, NoMatchingViewException noViewFoundException) {
+                        TextureView textureView = (TextureView) view;
+                        Bitmap bitmap = textureView.getBitmap();
+                        int topLeft = bitmap.getPixel(0, 0);
+                        int topRight = bitmap.getPixel(0, bitmap.getHeight() - 1);
+                        int bottomLeft = bitmap.getPixel(bitmap.getWidth() - 1, 0);
+                        assertFalse(topLeft == topRight && topRight == bottomLeft);
+                    }
+                });
+    }
+
+    // A temporary workaround
+    private static class WaitAction implements ViewAction {
+
+        @Override
+        public Matcher<View> getConstraints() {
+            return isDisplayed();
+        }
+
+        @Override
+        public String getDescription() {
+            return "aaa";
+        }
+
+        @Override
+        public void perform(UiController uiController, View view) {
+            SystemClock.sleep(1000);
+        }
+
     }
 
 }

library/src/main/base/com/google/android/cameraview/CameraViewImpl.java

@@ -0,0 +1,33 @@
+/*
+ * 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.google.android.cameraview;
+
+import android.view.TextureView;
+
+abstract class CameraViewImpl {
+
+    abstract TextureView.SurfaceTextureListener getSurfaceTextureListener();
+
+    abstract void onResume();
+
+    abstract void onPause();
+
+    abstract void startPreview();
+
+    abstract void stopPreview();
+
+}