1 files changed, 86 insertions, 0 deletions
diff --git a/chromium/media/cast/transport/rtp_sender/rtp_packetizer/rtp_packetizer.h b/chromium/media/cast/transport/rtp_sender/rtp_packetizer/rtp_packetizer.h
new file mode 100644
index 00000000000..ebdbf010183
--- /dev/null
+++ b/chromium/media/cast/transport/rtp_sender/rtp_packetizer/rtp_packetizer.h
@@ -0,0 +1,86 @@
+// 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_TRANSPORT_RTP_SENDER_RTP_PACKETIZER_RTP_PACKETIZER_H_
+#define MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_PACKETIZER_RTP_PACKETIZER_H_
+
+#include <cmath>
+#include <list>
+#include <map>
+
+#include "base/time/time.h"
+#include "media/cast/transport/rtp_sender/packet_storage/packet_storage.h"
+
+namespace base {
+class TickClock;
+}
+
+namespace media {
+namespace cast {
+
+namespace transport {
+
+class PacedSender;
+
+struct RtpPacketizerConfig {
+  RtpPacketizerConfig();
+  ~RtpPacketizerConfig();
+
+  // General.
+  bool audio;
+  int payload_type;
+  uint16 max_payload_length;
+  uint16 sequence_number;
+  int frequency;
+
+  // SSRC.
+  unsigned int ssrc;
+
+  // Video.
+  VideoCodec video_codec;
+
+  // Audio.
+  uint8 channels;
+  AudioCodec audio_codec;
+};
+
+// This object is only called from the main cast thread.
+// This class break encoded audio and video frames into packets and add an RTP
+// header to each packet.
+class RtpPacketizer {
+ public:
+  RtpPacketizer(PacedSender* const transport,
+                PacketStorage* packet_storage,
+                RtpPacketizerConfig rtp_packetizer_config);
+  ~RtpPacketizer();
+
+  void SendFrameAsPackets(const EncodedFrame& frame);
+
+  // Return the next sequence number, and increment by one. Enables unique
+  // incremental sequence numbers for every packet (including retransmissions).
+  uint16 NextSequenceNumber();
+
+  size_t send_packet_count() const { return send_packet_count_; }
+  size_t send_octet_count() const { return send_octet_count_; }
+
+ private:
+  void BuildCommonRTPheader(Packet* packet, bool marker_bit, uint32 time_stamp);
+
+  RtpPacketizerConfig config_;
+  PacedSender* const transport_;  // Not owned by this class.
+  PacketStorage* packet_storage_;
+
+  uint16 sequence_number_;
+  uint32 rtp_timestamp_;
+  uint16 packet_id_;
+
+  size_t send_packet_count_;
+  size_t send_octet_count_;
+};
+
+}  // namespace transport
+}  // namespace cast
+}  // namespace media
+
+#endif  // MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_PACKETIZER_RTP_PACKETIZER_H_