e7a5f7bfae
MediaChannel accepted the RtpPacket buffers through non-const pointer. This is both unclear and introduces questions regarding if the buffer is actually copied or not. This change modifies the method to accept by value to reduce ambiguity. Usage of the non-const data() method which could potentially copy the buffer contents is also reduced in favor of cdata() which never copies. Bug: None Change-Id: I3b2daef0d31cb6aacceb46c86da3a40ce836242b Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/127340 Reviewed-by: Steve Anton <steveanton@webrtc.org> Reviewed-by: Seth Hampson <shampson@webrtc.org> Commit-Queue: Amit Hilbuch <amithi@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27090}
112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MEDIA_BASE_RTP_DATA_ENGINE_H_
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#define MEDIA_BASE_RTP_DATA_ENGINE_H_
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#include <map>
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#include <memory>
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#include <string>
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#include <vector>
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#include "media/base/media_channel.h"
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#include "media/base/media_constants.h"
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#include "media/base/media_engine.h"
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namespace rtc {
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class DataRateLimiter;
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}
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namespace cricket {
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struct DataCodec;
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class RtpDataEngine : public DataEngineInterface {
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public:
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RtpDataEngine();
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virtual DataMediaChannel* CreateChannel(const MediaConfig& config);
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virtual const std::vector<DataCodec>& data_codecs() { return data_codecs_; }
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private:
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std::vector<DataCodec> data_codecs_;
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};
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// Keep track of sequence number and timestamp of an RTP stream. The
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// sequence number starts with a "random" value and increments. The
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// timestamp starts with a "random" value and increases monotonically
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// according to the clockrate.
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class RtpClock {
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public:
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RtpClock(int clockrate, uint16_t first_seq_num, uint32_t timestamp_offset)
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: clockrate_(clockrate),
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last_seq_num_(first_seq_num),
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timestamp_offset_(timestamp_offset) {}
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// Given the current time (in number of seconds which must be
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// monotonically increasing), Return the next sequence number and
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// timestamp.
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void Tick(double now, int* seq_num, uint32_t* timestamp);
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private:
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int clockrate_;
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uint16_t last_seq_num_;
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uint32_t timestamp_offset_;
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};
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class RtpDataMediaChannel : public DataMediaChannel {
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public:
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explicit RtpDataMediaChannel(const MediaConfig& config);
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virtual ~RtpDataMediaChannel();
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virtual bool SetSendParameters(const DataSendParameters& params);
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virtual bool SetRecvParameters(const DataRecvParameters& params);
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virtual bool AddSendStream(const StreamParams& sp);
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virtual bool RemoveSendStream(uint32_t ssrc);
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virtual bool AddRecvStream(const StreamParams& sp);
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virtual bool RemoveRecvStream(uint32_t ssrc);
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virtual bool SetSend(bool send) {
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sending_ = send;
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return true;
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}
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virtual bool SetReceive(bool receive) {
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receiving_ = receive;
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return true;
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}
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virtual void OnPacketReceived(rtc::CopyOnWriteBuffer packet,
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int64_t packet_time_us);
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virtual void OnRtcpReceived(rtc::CopyOnWriteBuffer packet,
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int64_t packet_time_us) {}
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virtual void OnReadyToSend(bool ready) {}
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virtual bool SendData(const SendDataParams& params,
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const rtc::CopyOnWriteBuffer& payload,
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SendDataResult* result);
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private:
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void Construct();
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bool SetMaxSendBandwidth(int bps);
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bool SetSendCodecs(const std::vector<DataCodec>& codecs);
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bool SetRecvCodecs(const std::vector<DataCodec>& codecs);
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bool sending_;
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bool receiving_;
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std::vector<DataCodec> send_codecs_;
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std::vector<DataCodec> recv_codecs_;
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std::vector<StreamParams> send_streams_;
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std::vector<StreamParams> recv_streams_;
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std::map<uint32_t, RtpClock*> rtp_clock_by_send_ssrc_;
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std::unique_ptr<rtc::DataRateLimiter> send_limiter_;
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};
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} // namespace cricket
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#endif // MEDIA_BASE_RTP_DATA_ENGINE_H_
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