ZLMediaKit/src/Record/HlsRecorder.h

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/*
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
*
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
*
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* Use of this source code is governed by MIT license that can be found in the
* LICENSE file in the root of the source tree. All contributing project authors
* may be found in the AUTHORS file in the root of the source tree.
*/
#ifndef HLSRECORDER_H
#define HLSRECORDER_H
#include "HlsMakerImp.h"
#include "TsMuxer.h"
namespace mediakit {
class HlsRecorder : public MediaSourceEventInterceptor, public TsMuxer, public std::enable_shared_from_this<HlsRecorder> {
public:
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typedef std::shared_ptr<HlsRecorder> Ptr;
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HlsRecorder(const string &m3u8_file, const string &params){
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GET_CONFIG(uint32_t, hlsNum, Hls::kSegmentNum);
GET_CONFIG(uint32_t, hlsBufSize, Hls::kFileBufSize);
GET_CONFIG(uint32_t, hlsDuration, Hls::kSegmentDuration);
_hls = std::make_shared<HlsMakerImp>(m3u8_file, params, hlsBufSize, hlsDuration, hlsNum);
//清空上次的残余文件
_hls->clearCache();
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}
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~HlsRecorder(){}
void setMediaSource(const string &vhost, const string &app, const string &stream_id) {
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_hls->setMediaSource(vhost, app, stream_id);
}
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void setListener(const std::weak_ptr<MediaSourceEvent> &listener) {
_listener = listener;
_hls->getMediaSource()->setListener(shared_from_this());
//先注册媒体流,后续可以按需生成
_hls->getMediaSource()->registHls();
}
int readerCount() {
return _hls->getMediaSource()->readerCount();
}
void onReaderChanged(MediaSource &sender, int size) override {
//hls保留切片个数为0时代表为hls录制(不删除切片)那么不管有无观看者都一直生成hls
_enabled = _hls->isLive() ? size : true;
if (!size && _hls->isLive()) {
//hls直播时如果无人观看就删除视频缓存目的是为了防止视频跳跃
_clear_cache = true;
}
MediaSourceEventInterceptor::onReaderChanged(sender, size);
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}
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bool isEnabled() {
//缓存尚未清空时还允许触发inputFrame函数以便及时清空缓存
return _clear_cache ? true : _enabled;
}
void inputFrame(const Frame::Ptr &frame) override{
if (_clear_cache) {
_clear_cache = false;
_hls->clearCache();
}
if (_enabled) {
TsMuxer::inputFrame(frame);
}
}
private:
void onTs(const void *packet, int bytes, uint32_t timestamp, bool is_idr_fast_packet) override {
_hls->inputData((char *) packet, bytes, timestamp, is_idr_fast_packet);
}
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private:
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//默认不生成hls文件有播放器时再生成
bool _enabled = false;
bool _clear_cache = false;
std::shared_ptr<HlsMakerImp> _hls;
};
}//namespace mediakit
#endif //HLSRECORDER_H