Added framer to cast.

media/cast/framer/framer.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.
+
+#ifndef MEDIA_CAST_FRAMER_FRAMER_H_
+#define MEDIA_CAST_FRAMER_FRAMER_H_
+
+#include <map>
+
+#include "base/basictypes.h"
+#include "base/memory/linked_ptr.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/time/default_tick_clock.h"
+#include "base/time/tick_clock.h"
+#include "base/time/time.h"
+#include "media/cast/framer/cast_message_builder.h"
+#include "media/cast/framer/frame_buffer.h"
+#include "media/cast/framer/frame_id_map.h"
+#include "media/cast/rtcp/rtcp.h"
+#include "media/cast/rtp_common/rtp_defines.h"
+
+namespace media {
+namespace cast {
+
+typedef std::map<uint8, linked_ptr<FrameBuffer> > FrameList;
+
+class Framer {
+ public:
+  Framer(RtpPayloadFeedback* incoming_payload_feedback,
+         uint32 ssrc,
+         bool decoder_faster_than_max_frame_rate,
+         int max_unacked_frames);
+  ~Framer();
+
+  void InsertPacket(const uint8* payload_data,
+                    int payload_size,
+                    const RtpCastHeader& rtp_header);
+
+  // Extracts a complete encoded frame - will only return a complete continuous
+  // frame.
+  // Returns false if the frame does not exist or if the frame is not complete
+  // within the given time frame.
+  bool GetEncodedVideoFrame(const base::TimeTicks& timeout,
+                            EncodedVideoFrame* video_frame,
+                            uint32* rtp_timestamp,
+                            bool* next_frame);
+
+  bool GetEncodedAudioFrame(const base::TimeTicks& timeout,
+                            EncodedAudioFrame* audio_frame,
+                            uint32* rtp_timestamp,
+                            bool* next_frame);
+
+  void ReleaseFrame(uint8 frame_id);
+
+  // Reset framer state to original state and flush all pending buffers.
+  void Reset();
+  bool TimeToSendNextCastMessage(base::TimeTicks* time_to_send);
+  void SendCastMessage();
+
+  void set_clock(base::TickClock* clock) {
+    clock_ = clock;
+    cast_msg_builder_->set_clock(clock);
+  }
+
+ private:
+  // Return true if we should wait.
+  bool WaitForNextFrame(const base::TimeTicks& timeout) const;
+
+  const bool decoder_faster_than_max_frame_rate_;
+  FrameList frames_;
+  FrameIdMap frame_id_map_;
+
+  base::DefaultTickClock default_tick_clock_;
+  base::TickClock* clock_;
+
+  scoped_ptr<CastMessageBuilder> cast_msg_builder_;
+
+  DISALLOW_COPY_AND_ASSIGN(Framer);
+};
+
+}  //  namespace cast
+}  //  namespace media
+
+#endif  // MEDIA_CAST_FRAMER_FRAMER_H_