| /* |
| * libjingle |
| * Copyright 2012 Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef TALK_MEDIA_BASE_RTPDATAENGINE_H_ |
| #define TALK_MEDIA_BASE_RTPDATAENGINE_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "talk/media/base/constants.h" |
| #include "talk/media/base/mediachannel.h" |
| #include "talk/media/base/mediaengine.h" |
| #include "webrtc/base/timing.h" |
| |
| namespace cricket { |
| |
| struct DataCodec; |
| |
| class RtpDataEngine : public DataEngineInterface { |
| public: |
| RtpDataEngine(); |
| |
| virtual DataMediaChannel* CreateChannel(DataChannelType data_channel_type); |
| |
| virtual const std::vector<DataCodec>& data_codecs() { |
| return data_codecs_; |
| } |
| |
| // Mostly for testing with a fake clock. Ownership is passed in. |
| void SetTiming(rtc::Timing* timing) { |
| timing_.reset(timing); |
| } |
| |
| private: |
| std::vector<DataCodec> data_codecs_; |
| rtc::scoped_ptr<rtc::Timing> timing_; |
| }; |
| |
| // Keep track of sequence number and timestamp of an RTP stream. The |
| // sequence number starts with a "random" value and increments. The |
| // timestamp starts with a "random" value and increases monotonically |
| // according to the clockrate. |
| class RtpClock { |
| public: |
| RtpClock(int clockrate, uint16_t first_seq_num, uint32_t timestamp_offset) |
| : clockrate_(clockrate), |
| last_seq_num_(first_seq_num), |
| timestamp_offset_(timestamp_offset) {} |
| |
| // Given the current time (in number of seconds which must be |
| // monotonically increasing), Return the next sequence number and |
| // timestamp. |
| void Tick(double now, int* seq_num, uint32_t* timestamp); |
| |
| private: |
| int clockrate_; |
| uint16_t last_seq_num_; |
| uint32_t timestamp_offset_; |
| }; |
| |
| class RtpDataMediaChannel : public DataMediaChannel { |
| public: |
| // Timing* Used for the RtpClock |
| explicit RtpDataMediaChannel(rtc::Timing* timing); |
| // Sets Timing == NULL, so you'll need to call set_timer() before |
| // using it. This is needed by FakeMediaEngine. |
| RtpDataMediaChannel(); |
| virtual ~RtpDataMediaChannel(); |
| |
| void set_timing(rtc::Timing* timing) { |
| timing_ = timing; |
| } |
| |
| virtual bool SetSendParameters(const DataSendParameters& params); |
| virtual bool SetRecvParameters(const DataRecvParameters& params); |
| virtual bool AddSendStream(const StreamParams& sp); |
| virtual bool RemoveSendStream(uint32_t ssrc); |
| virtual bool AddRecvStream(const StreamParams& sp); |
| virtual bool RemoveRecvStream(uint32_t ssrc); |
| virtual bool SetSend(bool send) { |
| sending_ = send; |
| return true; |
| } |
| virtual bool SetReceive(bool receive) { |
| receiving_ = receive; |
| return true; |
| } |
| virtual void OnPacketReceived(rtc::Buffer* packet, |
| const rtc::PacketTime& packet_time); |
| virtual void OnRtcpReceived(rtc::Buffer* packet, |
| const rtc::PacketTime& packet_time) {} |
| virtual void OnReadyToSend(bool ready) {} |
| virtual bool SendData( |
| const SendDataParams& params, |
| const rtc::Buffer& payload, |
| SendDataResult* result); |
| |
| private: |
| void Construct(rtc::Timing* timing); |
| bool SetMaxSendBandwidth(int bps); |
| bool SetSendCodecs(const std::vector<DataCodec>& codecs); |
| bool SetRecvCodecs(const std::vector<DataCodec>& codecs); |
| |
| bool sending_; |
| bool receiving_; |
| rtc::Timing* timing_; |
| std::vector<DataCodec> send_codecs_; |
| std::vector<DataCodec> recv_codecs_; |
| std::vector<StreamParams> send_streams_; |
| std::vector<StreamParams> recv_streams_; |
| std::map<uint32_t, RtpClock*> rtp_clock_by_send_ssrc_; |
| rtc::scoped_ptr<rtc::RateLimiter> send_limiter_; |
| }; |
| |
| } // namespace cricket |
| |
| #endif // TALK_MEDIA_BASE_RTPDATAENGINE_H_ |