Cast: Added support for AES-CTR crypto.

media/cast/framer/framer.cc

 // 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.
 
 #include "media/cast/framer/framer.h"
 
 #include "base/logging.h"
 
 namespace media {
 namespace cast {
@@ skipping 17 matching lines @@
 bool Framer::InsertPacket(const uint8* payload_data,
                           size_t payload_size,
                           const RtpCastHeader& rtp_header) {
   bool complete = false;
   if (!frame_id_map_.InsertPacket(rtp_header, &complete)) return false;
 
   // Does this packet belong to a new frame?
   FrameList::iterator it = frames_.find(rtp_header.frame_id);
   if (it == frames_.end()) {
     // New frame.
-    linked_ptr<FrameBuffer> frame_buffer(new FrameBuffer());
+    linked_ptr<FrameBuffer> frame_buffer(new FrameBuffer()); // TODO wrap count?

[Alpha Left Google, 2013/11/07 01:10:11]

What does this mean?

[pwestin, 2013/11/07 17:16:04]

I have a separate cl coming changing frame id to be 32 bits to avoid frame id to
wrap. Which is an issue for the crypto.

Removed this comment 

     frame_buffer->InsertPacket(payload_data, payload_size, rtp_header);
     frames_.insert(std::make_pair(rtp_header.frame_id, frame_buffer));
   } else {
     // Insert packet to existing frame buffer.
     it->second->InsertPacket(payload_data, payload_size, rtp_header);
   }
 
   if (complete) {
     // ACK as soon as possible.
     VLOG(1) << "Complete frame " << static_cast<int>(rtp_header.frame_id);
@@ skipping 81 matching lines @@
 bool Framer::TimeToSendNextCastMessage(base::TimeTicks* time_to_send) {
   return cast_msg_builder_->TimeToSendNextCastMessage(time_to_send);
 }
 
 void Framer::SendCastMessage() {
   cast_msg_builder_->UpdateCastMessage();
 }
 
 }  // namespace cast
 }  // namespace media