1 files changed, 107 insertions, 0 deletions
diff --git a/java/com/android/dialer/callcomposer/cameraui/CameraMediaChooserView.java b/java/com/android/dialer/callcomposer/cameraui/CameraMediaChooserView.java
new file mode 100644
index 000000000..85c64e477
--- /dev/null
+++ b/java/com/android/dialer/callcomposer/cameraui/CameraMediaChooserView.java
@@ -0,0 +1,107 @@
+/*
+ * 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.dialer.callcomposer.cameraui;
+
+import android.content.Context;
+import android.graphics.Canvas;
+import android.hardware.Camera;
+import android.os.Bundle;
+import android.os.Parcelable;
+import android.util.AttributeSet;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+import com.android.dialer.callcomposer.camera.CameraManager;
+import com.android.dialer.callcomposer.camera.HardwareCameraPreview;
+import com.android.dialer.callcomposer.camera.SoftwareCameraPreview;
+import com.android.dialer.common.LogUtil;
+
+/** Used to display the view of the camera. */
+public class CameraMediaChooserView extends FrameLayout {
+  private static final String STATE_CAMERA_INDEX = "camera_index";
+  private static final String STATE_SUPER = "super";
+
+  // True if we have at least queued an update to the view tree to support software rendering
+  // fallback
+  private boolean mIsSoftwareFallbackActive;
+
+  public CameraMediaChooserView(final Context context, final AttributeSet attrs) {
+    super(context, attrs);
+  }
+
+  @Override
+  protected Parcelable onSaveInstanceState() {
+    final Bundle bundle = new Bundle();
+    bundle.putParcelable(STATE_SUPER, super.onSaveInstanceState());
+    final int cameraIndex = CameraManager.get().getCameraIndex();
+    LogUtil.i("CameraMediaChooserView.onSaveInstanceState", "saving camera index:" + cameraIndex);
+    bundle.putInt(STATE_CAMERA_INDEX, cameraIndex);
+    return bundle;
+  }
+
+  @Override
+  protected void onRestoreInstanceState(final Parcelable state) {
+    if (!(state instanceof Bundle)) {
+      return;
+    }
+
+    final Bundle bundle = (Bundle) state;
+    final int cameraIndex = bundle.getInt(STATE_CAMERA_INDEX);
+    super.onRestoreInstanceState(bundle.getParcelable(STATE_SUPER));
+
+    LogUtil.i(
+        "CameraMediaChooserView.onRestoreInstanceState", "restoring camera index:" + cameraIndex);
+    if (cameraIndex != -1) {
+      CameraManager.get().selectCameraByIndex(cameraIndex);
+    } else {
+      resetState();
+    }
+  }
+
+  public void resetState() {
+    CameraManager.get().selectCamera(Camera.CameraInfo.CAMERA_FACING_BACK);
+  }
+
+  @Override
+  protected void onDraw(final Canvas canvas) {
+    super.onDraw(canvas);
+    // If the canvas isn't hardware accelerated, we have to replace the HardwareCameraPreview
+    // with a SoftwareCameraPreview which supports software rendering
+    if (!canvas.isHardwareAccelerated() && !mIsSoftwareFallbackActive) {
+      mIsSoftwareFallbackActive = true;
+      // Post modifying the tree since we can't modify the view tree during a draw pass
+      post(
+          new Runnable() {
+            @Override
+            public void run() {
+              final HardwareCameraPreview cameraPreview =
+                  (HardwareCameraPreview) findViewById(R.id.camera_preview);
+              if (cameraPreview == null) {
+                return;
+              }
+              final ViewGroup parent = ((ViewGroup) cameraPreview.getParent());
+              final int index = parent.indexOfChild(cameraPreview);
+              final SoftwareCameraPreview softwareCameraPreview =
+                  new SoftwareCameraPreview(getContext());
+              // Be sure to remove the hardware view before adding the software view to
+              // prevent having 2 camera previews active at the same time
+              parent.removeView(cameraPreview);
+              parent.addView(softwareCameraPreview, index);
+            }
+          });
+    }
+  }
+}