1 files changed, 163 insertions, 0 deletions
diff --git a/java/com/android/dialer/simulator/impl/SimulatorRemoteVideo.java b/java/com/android/dialer/simulator/impl/SimulatorRemoteVideo.java
new file mode 100644
index 000000000..b14bba39a
--- /dev/null
+++ b/java/com/android/dialer/simulator/impl/SimulatorRemoteVideo.java
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2017 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.dialer.simulator.impl;
+
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.os.Handler;
+import android.os.HandlerThread;
+import android.support.annotation.NonNull;
+import android.support.annotation.VisibleForTesting;
+import android.support.annotation.WorkerThread;
+import android.view.Surface;
+import com.android.dialer.common.Assert;
+import com.android.dialer.common.LogUtil;
+
+/**
+ * Used by the video provider to draw the remote party's video. The in-call UI is responsible for
+ * setting the view to draw to. Since the simulator doesn't have a remote party we simply draw a
+ * green screen with a ball bouncing around.
+ */
+final class SimulatorRemoteVideo {
+  @NonNull private final RenderThread thread;
+  private boolean isStopped;
+
+  SimulatorRemoteVideo(@NonNull Surface surface) {
+    thread = new RenderThread(new Renderer(surface));
+  }
+
+  void startVideo() {
+    LogUtil.enterBlock("SimulatorRemoteVideo.startVideo");
+    Assert.checkState(!isStopped);
+    thread.start();
+  }
+
+  void stopVideo() {
+    LogUtil.enterBlock("SimulatorRemoteVideo.stopVideo");
+    isStopped = true;
+    thread.quitSafely();
+  }
+
+  @VisibleForTesting
+  Runnable getRenderer() {
+    return thread.getRenderer();
+  }
+
+  private static class Renderer implements Runnable {
+    private static final int FRAME_DELAY_MILLIS = 33;
+    private static final float CIRCLE_STEP = 16.0f;
+
+    @NonNull private final Surface surface;
+    private float circleX;
+    private float circleY;
+    private float radius;
+    private double angle;
+
+    Renderer(@NonNull Surface surface) {
+      this.surface = Assert.isNotNull(surface);
+    }
+
+    @Override
+    public void run() {
+      drawFrame();
+      schedule();
+    }
+
+    @WorkerThread
+    void schedule() {
+      Assert.isWorkerThread();
+      new Handler().postDelayed(this, FRAME_DELAY_MILLIS);
+    }
+
+    @WorkerThread
+    private void drawFrame() {
+      Assert.isWorkerThread();
+      Canvas canvas;
+      try {
+        canvas = surface.lockCanvas(null /* dirtyRect */);
+      } catch (IllegalArgumentException e) {
+        // This can happen when the video fragment tears down.
+        LogUtil.e("SimulatorRemoteVideo.RenderThread.drawFrame", "unable to lock canvas", e);
+        return;
+      }
+
+      LogUtil.i(
+          "SimulatorRemoteVideo.RenderThread.drawFrame",
+          "size; %d x %d",
+          canvas.getWidth(),
+          canvas.getHeight());
+      canvas.drawColor(Color.GREEN);
+      moveCircle(canvas);
+      drawCircle(canvas);
+      surface.unlockCanvasAndPost(canvas);
+    }
+
+    @WorkerThread
+    private void moveCircle(Canvas canvas) {
+      Assert.isWorkerThread();
+      int width = canvas.getWidth();
+      int height = canvas.getHeight();
+      if (circleX == 0 && circleY == 0) {
+        circleX = width / 2.0f;
+        circleY = height / 2.0f;
+        angle = Math.PI / 4.0;
+        radius = Math.min(canvas.getWidth(), canvas.getHeight()) * 0.15f;
+      } else {
+        circleX += (float) Math.cos(angle) * CIRCLE_STEP;
+        circleY += (float) Math.sin(angle) * CIRCLE_STEP;
+        // Bounce the circle off the edge.
+        if (circleX + radius >= width
+            || circleX - radius <= 0
+            || circleY + radius >= height
+            || circleY - radius <= 0) {
+          angle += Math.PI / 2.0;
+        }
+      }
+    }
+
+    @WorkerThread
+    private void drawCircle(Canvas canvas) {
+      Assert.isWorkerThread();
+      Paint paint = new Paint();
+      paint.setColor(Color.MAGENTA);
+      paint.setStyle(Paint.Style.FILL);
+      canvas.drawCircle(circleX, circleY, radius, paint);
+    }
+  }
+
+  private static class RenderThread extends HandlerThread {
+    @NonNull private final Renderer renderer;
+
+    RenderThread(@NonNull Renderer renderer) {
+      super("SimulatorRemoteVideo");
+      this.renderer = Assert.isNotNull(renderer);
+    }
+
+    @Override
+    @WorkerThread
+    protected void onLooperPrepared() {
+      Assert.isWorkerThread();
+      renderer.schedule();
+    }
+
+    @VisibleForTesting
+    Runnable getRenderer() {
+      return renderer;
+    }
+  }
+}