修复HLS点播时下载切片过快的bug (#2635 #2628)

Co-authored-by: xia-chu <771730766@qq.com>

src/Http/HlsPlayer.cpp

@@ -71,6 +71,11 @@ void HlsPlayer::teardown() {
 
 void HlsPlayer::fetchSegment() {
     if (_ts_list.empty()) {
+        // 如果是点播文件，播放列表为空代表文件播放结束，关闭播放器: #2628
+        if(!HlsParser::isLive()){
+            teardown();
+            return;
+        }
         //播放列表为空，那么立即重新下载m3u8文件
         _timer.reset();
         fetchIndexFile();
@@ -125,14 +130,17 @@ void HlsPlayer::fetchSegment() {
                 strong_self->_timeout_multiple = MAX(strong_self->_timeout_multiple - 1, MIN_TIMEOUT_MULTIPLE);
             }
         }
-        //提前半秒下载好
-        auto delay = duration - ticker.elapsedTime() / 1000.0f - 0.5;
-        if (delay <= 0) {
+        // 提前0.5秒下载好，支持点播文件控制下载速度: #2628
+        auto delay = duration - 0.5 - ticker.elapsedTime() / 1000.0f;
+        if (delay > 2.0) {
+            // 提前1秒下载
+            delay -= 1.0;
+        } else if (delay <= 0) {
             // 延时最小10ms
-            delay = 10;
+            delay = 0.01;
         }
         // 延时下载下一个切片
-        strong_self->_timer_ts.reset(new Timer(delay / 1000.0f, [weak_self]() {
+        strong_self->_timer_ts.reset(new Timer(delay, [weak_self]() {
             auto strong_self = weak_self.lock();
             if (strong_self) {
                 strong_self->fetchSegment();

tests/test_bench_forward.cpp

@@ -0,0 +1,267 @@
+/*	
+ * Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.	
+ *	
+ * This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).	
+ *	
+ * 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.	
+ */
+
+#include <signal.h>
+#include <atomic>
+#include <iostream>
+#include <vector>
+#include "Util/logger.h"
+#include "Util/onceToken.h"
+#include "Util/CMD.h"
+#include "Util/File.h"
+#include "Common/config.h"
+#include "Common/Parser.h"
+#include "Rtsp/Rtsp.h"
+#include "Thread/WorkThreadPool.h"
+#include "Pusher/MediaPusher.h"
+#include "Player/PlayerProxy.h"
+
+using namespace std;
+using namespace toolkit;
+using namespace mediakit;
+
+class CMD_main : public CMD {
+public:
+    CMD_main() {
+        _parser.reset(new OptionParser(nullptr));
+
+        (*_parser) << Option('l',/*该选项简称，如果是\x00则说明无简称*/
+                             "level",/*该选项全称,每个选项必须有全称；不得为null或空字符串*/
+                             Option::ArgRequired,/*该选项后面必须跟值*/
+                             to_string(LTrace).data(),/*该选项默认值*/
+                             false,/*该选项是否必须赋值，如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
+                             "日志等级,LTrace~LError(0~4)",/*该选项说明文字*/
+                             nullptr);
+
+
+        (*_parser) << Option('t',/*该选项简称，如果是\x00则说明无简称*/
+                             "threads",/*该选项全称,每个选项必须有全称；不得为null或空字符串*/
+                             Option::ArgRequired,/*该选项后面必须跟值*/
+                             to_string(thread::hardware_concurrency()).data(),/*该选项默认值*/
+                             false,/*该选项是否必须赋值，如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
+                             "启动事件触发线程数",/*该选项说明文字*/
+                             nullptr);
+
+        (*_parser) << Option('i',/*该选项简称，如果是\x00则说明无简称*/
+                             "inputs",/*该选项全称,每个选项必须有全称；不得为null或空字符串*/
+                             Option::ArgRequired,/*该选项后面必须跟值*/
+                             "/tmp/inputs.txt",/*该选项默认值*/
+                             false,/*该选项是否必须赋值，如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
+                             "拉流地址配置文件，支持rtmp、rtsp, hls，多个地址以 \"换行符\" 分割",/*该选项说明文字*/
+                             nullptr);
+
+        (*_parser) << Option('o',/*该选项简称，如果是\x00则说明无简称*/
+                             "outputs",/*该选项全称,每个选项必须有全称；不得为null或空字符串*/
+                             Option::ArgRequired,/*该选项后面必须跟值*/
+                             "/tmp/outputs.txt",/*该选项默认值*/
+                             false,/*该选项是否必须赋值，如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
+                             "推流地址配置文件，支持rtmp、rtsp，多个地址以 \"换行符\" 分割",/*该选项说明文字*/
+                             nullptr);
+
+        (*_parser) << Option('d',/*该选项简称，如果是\x00则说明无简称*/
+                             "delay",/*该选项全称,每个选项必须有全称；不得为null或空字符串*/
+                             Option::ArgRequired,/*该选项后面必须跟值*/
+                             "50",/*该选项默认值*/
+                             true,/*该选项是否必须赋值，如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
+                             "启动拉流代理间隔,单位毫秒",/*该选项说明文字*/
+                             nullptr);
+
+        (*_parser) << Option('m',/*该选项简称，如果是\x00则说明无简称*/
+                             "merge",/*该选项全称,每个选项必须有全称；不得为null或空字符串*/
+                             Option::ArgRequired,/*该选项后面必须跟值*/
+                             "300",/*该选项默认值*/
+                             true,/*该选项是否必须赋值，如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
+                             "合并写毫秒,合并写能提高性能",/*该选项说明文字*/
+                             nullptr);
+
+        (*_parser) << Option('T',/*该选项简称，如果是\x00则说明无简称*/
+                             "rtp",/*该选项全称,每个选项必须有全称；不得为null或空字符串*/
+                             Option::ArgRequired,/*该选项后面必须跟值*/
+                             to_string((int) (Rtsp::RTP_TCP)).data(),/*该选项默认值*/
+                             true,/*该选项是否必须赋值，如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
+                             "rtsp拉流方式,支持tcp/udp/multicast:0/1/2",/*该选项说明文字*/
+                             nullptr);
+
+    }
+
+    ~CMD_main() override {}
+
+    const char *description() const override {
+        return "主程序命令参数";
+    }
+};
+
+
+//此程序为zlm的转推性能测试工具，用于测试拉流代理转推性能	
+int main(int argc, char *argv[]) {
+    CMD_main cmd_main;
+    try {
+        cmd_main.operator()(argc, argv);
+    } catch (ExitException &) {
+        return 0;
+    } catch (std::exception &ex) {
+        cout << ex.what() << endl;
+        return -1;
+    }
+
+    int threads = cmd_main["threads"];
+    LogLevel logLevel = (LogLevel) cmd_main["level"].as<int>();
+    logLevel = MIN(MAX(logLevel, LTrace), LError);
+    auto in_urls = cmd_main["inputs"];
+    auto out_urls = cmd_main["outputs"];
+    auto rtp_type = cmd_main["rtp"].as<int>();
+    auto delay_ms = cmd_main["delay"].as<int>();
+    auto merge_ms = cmd_main["merge"].as<int>();
+
+    //设置日志	
+    Logger::Instance().add(std::make_shared<ConsoleChannel>("ConsoleChannel", logLevel));
+    //启动异步日志线程	
+    Logger::Instance().setWriter(std::make_shared<AsyncLogWriter>());
+
+    //设置线程数	
+    EventPollerPool::setPoolSize(threads);
+    WorkThreadPool::setPoolSize(threads);
+
+    //设置合并写	
+    mINI::Instance()[General::kMergeWriteMS] = merge_ms;
+
+
+    std::vector<std::string> input_urls;
+    std::vector<std::string> output_urls;
+
+    auto parse_urls = [&]() {
+        // 获取输入源列表	
+        auto inputs = ::split(toolkit::File::loadFile(in_urls.c_str()), "\n");
+        for(auto &url : inputs){
+            if(url.empty() || url.find("://") == std::string::npos) {
+                continue;
+            }
+            auto input_url = ::trim(url);
+            input_urls.emplace_back(input_url);
+        }
+        // 获取输出源列表	
+        auto outputs = ::split(toolkit::File::loadFile(out_urls.c_str()), "\n");
+        for(auto &url : outputs){
+            if(url.empty() || url.find("://") == std::string::npos){
+                continue;
+            }
+            auto output_url = ::trim(url);
+            output_urls.emplace_back(output_url);
+        }
+
+        if(input_urls.empty() || input_urls.size() != output_urls.size()){
+            return -1;
+        }
+
+        for(size_t i = 0; i < input_urls.size(); i++){
+            InfoL << "拉流地址: " << input_urls[i] << ",推流地址：" << output_urls[i];
+        }
+        return 0;
+    };
+
+    if (0 != parse_urls()){
+        cout << "请检查inputs和outputs文件是否正确！" << endl;
+        return -1;
+    }
+
+    //推流器map	
+    recursive_mutex mtx;
+    unordered_map<int, PlayerProxy::Ptr> proxy_map;
+    unordered_map<int, MediaPusher::Ptr> pusher_map;
+
+    auto add_pusher = [&](const MediaSource::Ptr &src, const string &url, int index) {
+        auto pusher = std::make_shared<MediaPusher>(src);
+        pusher->setOnCreateSocket([](const EventPoller::Ptr &poller) {
+            //socket关闭互斥锁，提高性能	
+            return std::make_shared<Socket>(poller, false);
+        });
+        //设置推流失败监听	
+        pusher->setOnPublished([&mtx, &pusher_map, index](const SockException &ex) {
+            if (ex) {
+                //推流失败，移除之	
+                lock_guard<recursive_mutex> lck(mtx);
+                pusher_map.erase(index);
+            }
+        });
+        //设置推流中途断开监听	
+        pusher->setOnShutdown([&mtx, &pusher_map, index](const SockException &ex) {
+            //推流中途失败，移除之	
+            lock_guard<recursive_mutex> lck(mtx);
+            pusher_map.erase(index);
+        });
+        //设置rtsp推流方式(在rtsp推流时有效)	
+        (*pusher)[Client::kRtpType] = rtp_type;
+        pusher->publish(url);
+        //保持对象不销毁	
+        lock_guard<recursive_mutex> lck(mtx);
+        pusher_map.emplace(index, std::move(pusher));
+        //休眠后再启动下一个推流，防止短时间海量链接	
+        if (delay_ms > 0) {
+            usleep(1000 * delay_ms);
+        }
+    };
+
+    // 添加转推任务	
+    for(size_t i = 0; i < input_urls.size(); i++) {
+        //休眠一秒打印	
+        sleep(1);
+        auto schema = findSubString(output_urls[i].data(), nullptr, "://");
+        if (schema != RTSP_SCHEMA && schema != RTMP_SCHEMA) {
+            cout << "推流协议只支持rtsp或rtmp！" << endl;
+            return -1;
+        }
+        ProtocolOption option;
+        option.enable_ts = false;
+        option.enable_fmp4 = false;
+        option.enable_hls = false;
+        option.enable_mp4 = false;
+        option.modify_stamp = (int)ProtocolOption::kModifyStampRelative;
+        //添加拉流代理	
+        auto proxy = std::make_shared<PlayerProxy>(DEFAULT_VHOST, "app", std::to_string(i), option, -1, nullptr, 1);
+        //开始拉流代理	
+        proxy->play(input_urls[i]);
+        proxy_map.emplace(i, std::move(proxy));
+    }
+
+    // 设置退出信号	
+    static bool exit_flag = false;
+    signal(SIGINT, [](int) { exit_flag = true; });
+    while (!exit_flag) {
+        //休眠一秒打印	
+        sleep(1);
+
+        size_t alive_pusher = 0;
+        {
+            lock_guard<recursive_mutex> lck(mtx);
+            alive_pusher = pusher_map.size();
+        }
+        InfoL << "在线转推器个数:" << alive_pusher;
+
+        auto find_pusher = [&](int index){
+            lock_guard<recursive_mutex> lck(mtx);
+            auto it = pusher_map.find(index);
+            if (it == pusher_map.end()){
+                return false;
+            }
+            return true;
+        };
+        for(size_t i = 0; i < input_urls.size(); i++) {
+            if (!find_pusher(i)){
+                auto input_url = input_urls[i];
+                auto src = MediaSource::find(RTMP_SCHEMA, DEFAULT_VHOST, "app", std::to_string(i), false);
+                if (src != nullptr){
+                    add_pusher(src,output_urls[i],i);
+                }
+            }
+        }
+    }
+
+    return 0;
+}