Android Tango depth camera capture support.

media/capture/video/android/video_capture_device_android.h

 // Copyright (c) 2013 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.
 
 #ifndef MEDIA_CAPTURE_VIDEO_ANDROID_VIDEO_CAPTURE_DEVICE_ANDROID_H_
 #define MEDIA_CAPTURE_VIDEO_ANDROID_VIDEO_CAPTURE_DEVICE_ANDROID_H_
 
 #include <jni.h>
 #include <string>
 
@@ skipping 88 matching lines @@
   void OnPhotoTaken(JNIEnv* env,
                     const base::android::JavaParamRef<jobject>& obj,
                     jlong callback_id,
                     const base::android::JavaParamRef<jbyteArray>& data);
 
   // Implement org.chromium.media.VideoCapture.nativeOnStarted.
   void OnStarted(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
 
   void ConfigureForTesting();
 
- private:
+ protected:
   enum InternalState {
     kIdle,        // The device is opened but not in use.
     kConfigured,  // The device has been AllocateAndStart()ed.
     kError        // Hit error. User needs to recover by destroying the object.
   };
 
-  VideoPixelFormat GetColorspace();
+  // Helper code executed when the frame is available; if it is the first frame,
+  // setup time fluctuation control and process any pending photo requests.
+  void ProcessFirstFrameAvailable(base::TimeTicks current_time);
+
+  // Check if there is client and if the state is valid.
+  bool IsClientConfiguredForIncomingData();
+
+  // Check if the incoming frame didn't arrived too, advance the next frame
+  // expectation time and return true;
+  bool AdvanceToNextFrameTime(base::TimeTicks current_time);
+  void SendIncomingDataToClient(const uint8_t* data,
+                                int length,
+                                int rotation,
+                                base::TimeTicks reference_time,
+                                base::TimeDelta timestamp);
   void SetErrorState(const tracked_objects::Location& from_here,
                      const std::string& reason);
 
+  VideoCaptureFormat capture_format_;
+  // Java VideoCaptureAndroid instance.
+  base::android::ScopedJavaLocalRef<jobject> j_capture_;
+
+  // |lock_| protects |state_|, |client_|, |got_first_frame_| and
+  // |photo_requests_queue_| from concurrent access.
+  base::Lock lock_;
+  InternalState state_ = kIdle;
+  std::unique_ptr<VideoCaptureDevice::Client> client_;
+  bool got_first_frame_ = false;
+  base::TimeDelta frame_interval_;
+
+ private:
+  VideoPixelFormat GetColorspace();
   void DoGetPhotoState(GetPhotoStateCallback callback);
   void DoSetPhotoOptions(mojom::PhotoSettingsPtr settings,
                          SetPhotoOptionsCallback callback);
   void DoTakePhoto(TakePhotoCallback callback);
 
   // Thread on which we are created.
   const scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
 
-  // |lock_| protects |state_|, |client_|, |got_first_frame_| and
-  // |photo_requests_queue_| from concurrent access.
-  base::Lock lock_;
-  InternalState state_;
-  std::unique_ptr<VideoCaptureDevice::Client> client_;
-  bool got_first_frame_;
   // Photo-related requests waiting for |got_first_frame_| to be served. Android
   // APIs need the device capturing or nearly-capturing to be fully oeprational.
   std::list<base::Closure> photo_requests_queue_;
 
   base::TimeTicks expected_next_frame_time_;
-  base::TimeDelta frame_interval_;
 
   // List of |photo_callbacks_| in flight, being served in Java side.
   base::Lock photo_callbacks_lock_;
   std::list<std::unique_ptr<TakePhotoCallback>> photo_callbacks_;
 
   const VideoCaptureDeviceDescriptor device_descriptor_;
-  VideoCaptureFormat capture_format_;
-
-  // Java VideoCaptureAndroid instance.
-  base::android::ScopedJavaLocalRef<jobject> j_capture_;
 
   base::WeakPtrFactory<VideoCaptureDeviceAndroid> weak_ptr_factory_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceAndroid);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_CAPTURE_VIDEO_ANDROID_VIDEO_CAPTURE_DEVICE_ANDROID_H_