Cast: Added support for AES-CTR crypto.

media/cast/video_receiver/video_receiver.h

 // Copyright 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_CAST_VIDEO_RECEIVER_VIDEO_RECEIVER_H_
 #define MEDIA_CAST_VIDEO_RECEIVER_VIDEO_RECEIVER_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/time/tick_clock.h"
 #include "base/time/time.h"
 #include "media/cast/cast_config.h"
 #include "media/cast/cast_environment.h"
 #include "media/cast/cast_receiver.h"
 #include "media/cast/rtcp/rtcp.h"
 #include "media/cast/rtp_common/rtp_defines.h"
 #include "media/cast/rtp_receiver/rtp_receiver.h"
 
+namespace crypto {
+  class Encryptor;
+}
+
 namespace media {
 namespace cast {
 
 class Framer;
 class LocalRtpVideoData;
 class LocalRtpVideoFeedback;
 class PacedPacketSender;
 class PeerVideoReceiver;
 class Rtcp;
 class RtpReceiverStatistics;
@@ skipping 32 matching lines @@
  private:
   friend class LocalRtpVideoData;
   friend class LocalRtpVideoFeedback;
 
   void CastFeedback(const RtcpCastMessage& cast_message);
 
   void DecodeVideoFrame(const VideoFrameDecodedCallback& callback,
                         scoped_ptr<EncodedVideoFrame> encoded_frame,
                         const base::TimeTicks& render_time);
 
+  bool DecryptVideoFrame(scoped_ptr<EncodedVideoFrame>* video_frame);
+
   bool PullEncodedVideoFrame(uint32 rtp_timestamp,
                              bool next_frame,
                              scoped_ptr<EncodedVideoFrame>* encoded_frame,
                              base::TimeTicks* render_time);
 
   void PlayoutTimeout();
 
   // Returns Render time based on current time and the rtp timestamp.
   base::TimeTicks GetRenderTime(base::TimeTicks now, uint32 rtp_timestamp);
 
@@ skipping 17 matching lines @@
   const VideoCodec codec_;
   base::TimeDelta target_delay_delta_;
   base::TimeDelta frame_delay_;
   scoped_ptr<LocalRtpVideoData> incoming_payload_callback_;
   scoped_ptr<LocalRtpVideoFeedback> incoming_payload_feedback_;
   RtpReceiver rtp_receiver_;
   scoped_ptr<Rtcp> rtcp_;
   scoped_ptr<RtpReceiverStatistics> rtp_video_receiver_statistics_;
   base::TimeTicks time_last_sent_cast_message_;
   base::TimeDelta time_offset_;  // Sender-receiver offset estimation.
-
+  scoped_ptr<crypto::Encryptor> decryptor_;
+  std::string iv_mask_;
   std::list<VideoFrameEncodedCallback> queued_encoded_callbacks_;
-
   bool time_incoming_packet_updated_;
   base::TimeTicks time_incoming_packet_;
   uint32 incoming_rtp_timestamp_;
 
   base::WeakPtrFactory<VideoReceiver> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoReceiver);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_VIDEO_RECEIVER_VIDEO_RECEIVER_H_