mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-30 15:36:57 +08:00
74 lines
2.0 KiB
C++
74 lines
2.0 KiB
C++
/*
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
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*
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* Use of this source code is governed by MIT license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef ZLMEDIAKIT_G711_H
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#define ZLMEDIAKIT_G711_H
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#include "Frame.h"
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#include "Track.h"
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namespace mediakit{
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/**
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* G711音频通道
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*/
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class G711Track : public AudioTrackImp{
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public:
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typedef std::shared_ptr<G711Track> Ptr;
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G711Track(CodecId codecId,int sample_rate, int channels, int sample_bit) : AudioTrackImp(codecId,sample_rate,channels,sample_bit){}
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private:
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//克隆该Track
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Track::Ptr clone() override {
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return std::make_shared<std::remove_reference<decltype(*this)>::type >(*this);
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}
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//生成sdp
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Sdp::Ptr getSdp() override ;
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};
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/**
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* G711类型SDP
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*/
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class G711Sdp : public Sdp {
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public:
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/**
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* G711采样率固定为8000
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* @param codecId G711A G711U
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* @param sample_rate 音频采样率
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* @param payload_type rtp payload
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* @param bitrate 比特率
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*/
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G711Sdp(CodecId codecId,
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int sample_rate,
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int channels,
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int bitrate = 128,
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int payload_type = 98) : Sdp(sample_rate,payload_type), _codecId(codecId){
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_printer << "m=audio 0 RTP/AVP " << payload_type << "\r\n";
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if (bitrate) {
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_printer << "b=AS:" << bitrate << "\r\n";
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}
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_printer << "a=rtpmap:" << payload_type << (codecId == CodecG711A ? " PCMA/" : " PCMU/") << sample_rate << "/" << channels << "\r\n";
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_printer << "a=control:trackID=" << (int)TrackAudio << "\r\n";
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}
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string getSdp() const override {
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return _printer;
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}
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CodecId getCodecId() const override {
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return _codecId;
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}
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private:
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_StrPrinter _printer;
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CodecId _codecId;
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};
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}//namespace mediakit
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#endif //ZLMEDIAKIT_G711_H
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