Android Tango depth camera capture support.

media/capture/video/android/java/src/org/chromium/media/VideoCaptureTango.java

Index: media/capture/video/android/java/src/org/chromium/media/VideoCaptureTango.java
diff --git a/media/capture/video/android/java/src/org/chromium/media/VideoCaptureTango.java b/media/capture/video/android/java/src/org/chromium/media/VideoCaptureTango.java
new file mode 100644
index 0000000000000000000000000000000000000000..43f26d8bd8deafd870b19262a1ee81e0f2e39c6a
--- /dev/null
+++ b/media/capture/video/android/java/src/org/chromium/media/VideoCaptureTango.java
@@ -0,0 +1,77 @@
+// Copyright 2017 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.media;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.os.IBinder;
+
+import org.chromium.base.ContextUtils;
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.base.annotations.JNINamespace;
+
+/**
+ * This class used for establishing connection to Tango service. Most of the code implementing Tango
+ *capture is native, in VideoCaptureDevicetangoAndroid class.
+ **/
+@JNINamespace("media")
+public class VideoCaptureTango {
+    private static final String TAG = "cr.mediatango";
+
+    // Native callback context variable.
+    private final long mNativeVideoCaptureDeviceTangoAndroid;
+    private boolean mBound = false;
+
+    private ServiceConnection mTangoServiceConnection = new ServiceConnection() {
+        public void onServiceConnected(ComponentName name, IBinder service) {
+            mBound = true;
+            nativeOnTangoServiceConnected(mNativeVideoCaptureDeviceTangoAndroid, service);
+        }
+
+        public void onServiceDisconnected(ComponentName name) {
+            mBound = false;
+        }
+    };
+
+    private static final boolean bindTangoService(
+            final Context context, ServiceConnection connection) {
+        Intent intent = new Intent();
+        intent.setClassName("com.google.tango", "com.google.atap.tango.TangoService");
+
+        if (context.getPackageManager().resolveService(intent, 0) == null) return false;
+        return context.bindService(intent, connection, Context.BIND_AUTO_CREATE);
+    }
+
+    VideoCaptureTango(long nativeVideoCaptureDeviceTangoAndroid) {
+        mNativeVideoCaptureDeviceTangoAndroid = nativeVideoCaptureDeviceTangoAndroid;
+    }
+
+    @CalledByNative
+    public boolean startCapture() {
+        final Context context = ContextUtils.getApplicationContext();
+        return bindTangoService(context, mTangoServiceConnection);
+    }
+
+    @CalledByNative
+    public void stopCapture() {
+        nativeTangoDisconnect(mNativeVideoCaptureDeviceTangoAndroid);
+        if (mBound) {
+            ContextUtils.getApplicationContext().unbindService(mTangoServiceConnection);
+            mBound = false;
+        }
+    }
+
+    // Factory method.
+    @CalledByNative
+    static VideoCaptureTango create(long nativeVideoCaptureDeviceTangoAndroid) {
+        return new VideoCaptureTango(nativeVideoCaptureDeviceTangoAndroid);
+    }
+
+    public native void nativeOnTangoServiceConnected(
+            long nativeVideoCaptureDeviceTangoAndroid, IBinder service);
+    public native void nativeTangoDisconnect(long nativeVideoCaptureDeviceTangoAndroid);
+}