Cast: Only ACK decodable frames

media/cast/framer/cast_message_builder.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.
 
 // Handles NACK list and manages ACK.
 
 #ifndef MEDIA_CAST_FRAMER_CAST_MESSAGE_BUILDER_H_
 #define MEDIA_CAST_FRAMER_CAST_MESSAGE_BUILDER_H_
 
+#include <deque>
 #include <map>
 
 #include "media/cast/framer/frame_id_map.h"
 #include "media/cast/rtcp/rtcp.h"
 #include "media/cast/rtp_receiver/rtp_receiver_defines.h"
 
 namespace media {
 namespace cast {
 
 class RtpPayloadFeedback;
 
 typedef std::map<uint32, base::TimeTicks> TimeLastNackMap;
 
 class CastMessageBuilder {
  public:
   CastMessageBuilder(base::TickClock* clock,
                      RtpPayloadFeedback* incoming_payload_feedback,
                      FrameIdMap* frame_id_map,
                      uint32 media_ssrc,
                      bool decoder_faster_than_max_frame_rate,
                      int max_unacked_frames);
   ~CastMessageBuilder();
 
-  void CompleteFrameReceived(uint32 frame_id, bool is_key_frame);
+  void CompleteFrameReceived(uint32 frame_id);
   bool TimeToSendNextCastMessage(base::TimeTicks* time_to_send);
   void UpdateCastMessage();
   void Reset();
 
  private:
-  bool UpdateAckMessage();
+  bool UpdateAckMessage(uint32 frame_id);
   void BuildPacketList();
   bool UpdateCastMessageInternal(RtcpCastMessage* message);
 
   base::TickClock* const clock_;  // Not owned by this class.
   RtpPayloadFeedback* const cast_feedback_;
 
   // CastMessageBuilder has only const access to the frame id mapper.
   const FrameIdMap* const frame_id_map_;
   const uint32 media_ssrc_;
   const bool decoder_faster_than_max_frame_rate_;
   const int max_unacked_frames_;
 
   RtcpCastMessage cast_msg_;
   base::TimeTicks last_update_time_;
-  bool waiting_for_key_frame_;
 
   TimeLastNackMap time_last_nacked_map_;
 
   bool slowing_down_ack_;
   bool acked_last_frame_;
   uint32 last_acked_frame_id_;
+  std::deque<uint32> ack_queue_;
 
   DISALLOW_COPY_AND_ASSIGN(CastMessageBuilder);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  //  MEDIA_CAST_FRAMER_CAST_MESSAGE_BUILDER_H_