-Add a mojo service to get video frames from the camera through an android service

services/camera/src/org/chromium/services/camera/CameraApp.java

Index: services/camera/src/org/chromium/services/camera/CameraApp.java
diff --git a/services/camera/src/org/chromium/services/camera/CameraApp.java b/services/camera/src/org/chromium/services/camera/CameraApp.java
new file mode 100644
index 0000000000000000000000000000000000000000..6f359a30f5c98871d44e7588cc1821814c73cafe
--- /dev/null
+++ b/services/camera/src/org/chromium/services/camera/CameraApp.java
@@ -0,0 +1,58 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.services.camera;
+
+import android.content.Context;
+
+import org.chromium.mojo.application.ApplicationConnection;
+import org.chromium.mojo.application.ApplicationDelegate;
+import org.chromium.mojo.application.ApplicationRunner;
+import org.chromium.mojo.application.ServiceFactoryBinder;
+import org.chromium.mojo.bindings.InterfaceRequest;
+import org.chromium.mojo.system.Core;
+import org.chromium.mojo.system.MessagePipeHandle;
+import org.chromium.mojom.mojo.CameraVideoService;
+import org.chromium.mojom.mojo.Shell;
+
+class CameraApp implements ApplicationDelegate {
+    private final Context mCtx;
+    private final Core mCore;
+    private Shell mShell;
+
+    public CameraApp(Context context, Core core) {
+        mCtx = context;
+        mCore = core;
+    }
+
+    @Override
+    public void initialize(Shell shell, String[] args, String url) {
+        mShell = shell;
+    }
+
+    @Override
+    public boolean configureIncomingConnection(final ApplicationConnection connection) {
+        connection.addService(new ServiceFactoryBinder<CameraVideoService>() {
+            @Override
+            public void bind(InterfaceRequest<CameraVideoService> req) {
+                CameraVideoService.MANAGER.bind(new CameraServiceImpl(mCtx, mCore, mShell), req);

[alhaad1, 2015/10/02 06:33:27]

We are creating a new instance of CameraServiceImpl for every incoming
connection. This will cause us to have multiple objects trying to access the
device camera if multiple connections are made to this applications.

Instead can we have a single access to the device camera and just multiplex the
image to all the requesting incoming connection?

[gautham, 2015/10/02 22:29:12]

I thought the shell already only opened one instance of the app. I've changed it
to create one instance of CameraServiceImpl.

+            }
+
+            @Override
+            public String getInterfaceName() {
+                return CameraVideoService.MANAGER.getName();
+            }
+        });
+        return true;
+    }
+
+    @Override
+    public void quit() {
+    }
+
+    public static void mojoMain(Context context, Core core,
+                                MessagePipeHandle applicationRequestHandle) {
+        ApplicationRunner.run(new CameraApp(context, core), core, applicationRequestHandle);
+    }
+}