Cast: Fix two video freezing problems

media/cast/transport/transport_audio_sender.cc

 // Copyright 2014 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.
 
 #include "media/cast/transport/transport_audio_sender.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "media/cast/transport/rtp_sender/rtp_sender.h"
 
 namespace media {
 namespace cast {
 namespace transport {
 
 TransportAudioSender::TransportAudioSender(
     const CastTransportAudioConfig& config,
     base::TickClock* clock,
     const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner,
     PacedSender* const paced_packet_sender)
     : rtp_sender_(clock, transport_task_runner, paced_packet_sender),
       encryptor_() {
-  rtp_sender_.InitializeAudio(config);
-  initialized_ =
-      encryptor_.Initialize(config.base.aes_key, config.base.aes_iv_mask);
+  initialized_ = rtp_sender_.InitializeAudio(config) &&
+      encryptor_.Initialize(config.rtp.config.aes_key,
+                            config.rtp.config.aes_iv_mask);
 }
 
 TransportAudioSender::~TransportAudioSender() {}
 
 void TransportAudioSender::InsertCodedAudioFrame(
     const EncodedAudioFrame* audio_frame,
     const base::TimeTicks& recorded_time) {
+  if (!initialized_) {
+    return;
+  }
   if (encryptor_.initialized()) {
     EncodedAudioFrame encrypted_frame;
     if (!EncryptAudioFrame(*audio_frame, &encrypted_frame)) {
       return;
     }
     rtp_sender_.IncomingEncodedAudioFrame(&encrypted_frame, recorded_time);
   } else {
     rtp_sender_.IncomingEncodedAudioFrame(audio_frame, recorded_time);
   }
 }
 
 bool TransportAudioSender::EncryptAudioFrame(
     const EncodedAudioFrame& audio_frame,
     EncodedAudioFrame* encrypted_frame) {
+  if (!initialized_) {
+    return false;
+  }
   if (!encryptor_.Encrypt(
           audio_frame.frame_id, audio_frame.data, &encrypted_frame->data))
     return false;
 
   encrypted_frame->codec = audio_frame.codec;
   encrypted_frame->frame_id = audio_frame.frame_id;
   encrypted_frame->rtp_timestamp = audio_frame.rtp_timestamp;
   return true;
 }
 
 void TransportAudioSender::ResendPackets(
     const MissingFramesAndPacketsMap& missing_frames_and_packets) {
+  if (!initialized_) {
+    return;
+  }
   rtp_sender_.ResendPackets(missing_frames_and_packets);
 }
 
 void TransportAudioSender::SubscribeAudioRtpStatsCallback(
     const CastTransportRtpStatistics& callback) {
   rtp_sender_.SubscribeRtpStatsCallback(callback);
 }
 
 }  // namespace transport
 }  // namespace cast
 }  // namespace media