Cast: Reshuffle files under media/cast

media/cast/transport/cast_transport_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 is the main interface for the cast transport sender.  It accepts encoded
-// frames (both audio and video), encrypts their encoded data, packetizes them
-// and feeds them into a transport (e.g., UDP).
-
-// Construction of the Cast Sender and the Cast Transport Sender should be done
-// in the following order:
-// 1. Create CastTransportSender.
-// 2. Create CastSender (accepts CastTransportSender as an input).
-// 3. Call CastTransportSender::SetPacketReceiver to ensure that the packets
-//    received by the CastTransportSender will be sent to the CastSender.
-// Steps 3 can be done interchangeably.
-
-// Destruction: The CastTransportSender is assumed to be valid as long as the
-// CastSender is alive. Therefore the CastSender should be destructed before the
-// CastTransportSender.
-// This also works when the CastSender acts as a receiver for the RTCP packets
-// due to the weak pointers in the ReceivedPacket method in cast_sender_impl.cc.
-
-#ifndef MEDIA_CAST_TRANSPORT_CAST_TRANSPORT_SENDER_H_
-#define MEDIA_CAST_TRANSPORT_CAST_TRANSPORT_SENDER_H_
-
-#include "base/basictypes.h"
-#include "base/callback.h"
-#include "base/single_thread_task_runner.h"
-#include "base/threading/non_thread_safe.h"
-#include "base/time/tick_clock.h"
-#include "media/cast/logging/logging_defines.h"
-#include "media/cast/transport/cast_transport_config.h"
-#include "media/cast/transport/cast_transport_defines.h"
-
-namespace net {
-class NetLog;
-}  // namespace net
-
-namespace media {
-namespace cast {
-namespace transport {
-
-// Following the initialization of either audio or video an initialization
-// status will be sent via this callback.
-typedef base::Callback<void(CastTransportStatus status)>
-    CastTransportStatusCallback;
-
-typedef base::Callback<void(const std::vector<PacketEvent>&)>
-    BulkRawEventsCallback;
-
-// The application should only trigger this class from the transport thread.
-class CastTransportSender : public base::NonThreadSafe {
- public:
-  static scoped_ptr<CastTransportSender> Create(
-      net::NetLog* net_log,
-      base::TickClock* clock,
-      const net::IPEndPoint& remote_end_point,
-      const CastTransportStatusCallback& status_callback,
-      const BulkRawEventsCallback& raw_events_callback,
-      base::TimeDelta raw_events_callback_interval,
-      const scoped_refptr<base::SingleThreadTaskRunner>& transport_task_runner);
-
-  virtual ~CastTransportSender() {}
-
-  // Audio/Video initialization.
-  // Encoded frames cannot be transmitted until the relevant initialize method
-  // is called. Usually called by CastSender.
-  virtual void InitializeAudio(const CastTransportRtpConfig& config) = 0;
-  virtual void InitializeVideo(const CastTransportRtpConfig& config) = 0;
-
-  // Sets the Cast packet receiver. Should be called after creation on the
-  // Cast sender. Packets won't be received until this function is called.
-  virtual void SetPacketReceiver(
-      const PacketReceiverCallback& packet_receiver) = 0;
-
-  // The following two functions handle the encoded media frames (audio and
-  // video) to be processed.
-  // Frames will be encrypted, packetized and transmitted to the network.
-  virtual void InsertCodedAudioFrame(const EncodedFrame& audio_frame) = 0;
-  virtual void InsertCodedVideoFrame(const EncodedFrame& video_frame) = 0;
-
-  // Builds an RTCP packet and sends it to the network.
-  // |ntp_seconds|, |ntp_fraction| and |rtp_timestamp| are used in the
-  // RTCP Sender Report.
-  virtual void SendRtcpFromRtpSender(uint32 packet_type_flags,
-                                     uint32 ntp_seconds,
-                                     uint32 ntp_fraction,
-                                     uint32 rtp_timestamp,
-                                     const RtcpDlrrReportBlock& dlrr,
-                                     uint32 sending_ssrc,
-                                     const std::string& c_name) = 0;
-
-  // Retransmission request.
-  // |missing_packets| includes the list of frames and packets in each
-  // frame to be re-transmitted.
-  // If |cancel_rtx_if_not_in_list| is used as an optimization to cancel
-  // pending re-transmission requests of packets not listed in
-  // |missing_packets|. If the requested packet(s) were sent recently
-  // (how long is specified by |dedupe_window|) then this re-transmit
-  // will be ignored.
-  virtual void ResendPackets(
-      bool is_audio,
-      const MissingFramesAndPacketsMap& missing_packets,
-      bool cancel_rtx_if_not_in_list,
-      base::TimeDelta dedupe_window) = 0;
-};
-
-}  // namespace transport
-}  // namespace cast
-}  // namespace media
-
-#endif  // MEDIA_CAST_TRANSPORT_CAST_TRANSPORT_SENDER_H_