Cast: Fix two video freezing problems

media/cast/transport/rtp_sender/rtp_sender.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.
 
 // This file contains the interface to the cast RTP sender.
 
 #ifndef MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_SENDER_H_
 #define MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_SENDER_H_
 
 #include <map>
@@ skipping 23 matching lines @@
 class RtpSender {
  public:
   RtpSender(
       base::TickClock* clock,
       const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner,
       PacedSender* const transport);
 
   ~RtpSender();
 
   // Initialize audio stack. Audio must be initialized prior to sending encoded
-  // audio frames.
-  void InitializeAudio(const CastTransportAudioConfig& config);
+  // audio frames. Returns false if configuration is invalid.
+  bool InitializeAudio(const CastTransportAudioConfig& config);
 
   // Initialize video stack. Video must be initialized prior to sending encoded
-  // video frames.
-  void InitializeVideo(const CastTransportVideoConfig& config);
+  // video frames. Returns false if configuration is invalid.
+  bool InitializeVideo(const CastTransportVideoConfig& config);
 
   // The video_frame objects ownership is handled by the main cast thread.
   void IncomingEncodedVideoFrame(const EncodedVideoFrame* video_frame,
                                  const base::TimeTicks& capture_time);
 
   // The audio_frame objects ownership is handled by the main cast thread.
   void IncomingEncodedAudioFrame(const EncodedAudioFrame* audio_frame,
                                  const base::TimeTicks& recorded_time);
 
   void ResendPackets(const MissingFramesAndPacketsMap& missing_packets);
@@ skipping 20 matching lines @@
   base::WeakPtrFactory<RtpSender> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RtpSender);
 };
 
 }  // namespace transport
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_SENDER_H_