重写mp4录制驱动机制

src/Record/Recorder.cpp

@@ -26,13 +26,6 @@
 
 #include "Recorder.h"
 #include "Common/config.h"
-#include "Http/HttpSession.h"
-#include "Util/util.h"
-#include "Util/mini.h"
-#include "Network/sockutil.h"
-#include "HlsMakerImp.h"
-#include "Player/PlayerBase.h"
-#include "Common/MediaSink.h"
 #include "MP4Recorder.h"
 #include "HlsRecorder.h"
 
@@ -40,7 +33,7 @@ using namespace toolkit;
 
 namespace mediakit {
 
-MediaSinkInterface *Recorder::createHlsRecorder(const string &strVhost_tmp, const string &strApp, const string &strId) {
+MediaSinkInterface *createHlsRecorder(const string &strVhost_tmp, const string &strApp, const string &strId) {
 #if defined(ENABLE_HLS)
     GET_CONFIG(bool, enableVhost, General::kEnableVhost);
     GET_CONFIG(string, hlsPath, Hls::kFilePath);
@@ -66,7 +59,7 @@ MediaSinkInterface *Recorder::createHlsRecorder(const string &strVhost_tmp, cons
 #endif //defined(ENABLE_HLS)
 }
 
-MediaSinkInterface *Recorder::createMP4Recorder(const string &strVhost_tmp, const string &strApp, const string &strId) {
+MediaSinkInterface *createMP4Recorder(const string &strVhost_tmp, const string &strApp, const string &strId) {
 #if defined(ENABLE_MP4RECORD)
     GET_CONFIG(bool, enableVhost, General::kEnableVhost);
     GET_CONFIG(string, recordPath, Record::kFilePath);
@@ -91,5 +84,286 @@ MediaSinkInterface *Recorder::createMP4Recorder(const string &strVhost_tmp, cons
 #endif //defined(ENABLE_MP4RECORD)
 }
 
+////////////////////////////////////////////////////////////////////////////////////////
+
+class RecorderHelper {
+public:
+    typedef std::shared_ptr<RecorderHelper> Ptr;
+
+    /**
+     * 构建函数
+     * @param bContinueRecord false表明hls录制从头开始录制(意味着hls临时文件在媒体反注册时会被删除)
+     */
+    RecorderHelper(const MediaSinkInterface::Ptr &recorder, vector<Track::Ptr> &&tracks , bool bContinueRecord, const string &schema) {
+        _recorder = recorder;
+        _continueRecord = bContinueRecord;
+        _schema = schema;
+        attachTracks(std::move(tracks));
+    }
+
+    ~RecorderHelper() {
+        resetTracks();
+    }
+
+    // 附则于track上
+    void attachTracks(vector<Track::Ptr> &&tracks){
+        if(isTracksSame(tracks)){
+            return;
+        }
+        resetTracks();
+        _tracks = std::move(tracks);
+        for (auto &track : _tracks) {
+            _recorder->addTrack(track);
+            track->addDelegate(_recorder);
+        }
+    }
+
+
+    // 判断新的tracks是否与之前的一致
+    bool isTracksSame(const vector<Track::Ptr> &tracks){
+        if(tracks.size() != _tracks.size()) {
+            return false;
+        }
+        int i = 0;
+        for(auto &track : tracks){
+            if(track != _tracks[i++]){
+                return false;
+            }
+        }
+        return true;
+    }
+
+    // 重置所有track
+    void resetTracks(){
+        if(_tracks.empty()){
+            return;
+        }
+        for (auto &track : _tracks) {
+            track->delDelegate(_recorder.get());
+        }
+        _tracks.clear();
+        _recorder->resetTracks();
+    }
+
+    // 返回false表明hls录制从头开始录制(意味着hls临时文件在媒体反注册时会被删除)
+    bool continueRecord(){
+        return _continueRecord;
+    }
+
+    bool isRecording() {
+        return !_tracks.empty();
+    }
+
+    const string &getSchema() const{
+        return _schema;
+    }
+private:
+    MediaSinkInterface::Ptr _recorder;
+    vector<Track::Ptr> _tracks;
+    bool _continueRecord;
+    string _schema;
+};
+
+
+template<Recorder::type type>
+class MediaSourceWatcher {
+public:
+    static MediaSourceWatcher& Instance(){
+        static MediaSourceWatcher instance;
+        return instance;
+    }
+
+    Recorder::status getRecordStatus(const string &vhost, const string &app, const string &stream_id) {
+        return getRecordStatus_l(getRecorderKey(vhost, app, stream_id));
+    }
+
+    int startRecord(const string &vhost, const string &app, const string &stream_id, bool waitForRecord, bool continueRecord) {
+        auto key = getRecorderKey(vhost, app, stream_id);
+        lock_guard<decltype(_recorder_mtx)> lck(_recorder_mtx);
+        if (getRecordStatus_l(key) != Recorder::status_not_record) {
+            // 已经在录制了
+            return 0;
+        }
+
+        string schema;
+        auto tracks = findTracks(vhost, app, stream_id,schema);
+        if (!waitForRecord && tracks.empty()) {
+            // 暂时无法开启录制
+            return -1;
+        }
+
+        auto recorder = MediaSinkInterface::Ptr(createRecorder(vhost, app, stream_id));
+        if (!recorder) {
+            // 创建录制器失败
+            return -2;
+        }
+        _recorder_map[key] = std::make_shared<RecorderHelper>(recorder, std::move(tracks), continueRecord, schema);
+        return 0;
+    }
+
+    void stopRecord(const string &vhost, const string &app, const string &stream_id) {
+        lock_guard<decltype(_recorder_mtx)> lck(_recorder_mtx);
+        _recorder_map.erase(getRecorderKey(vhost, app, stream_id));
+    }
+
+private:
+    MediaSourceWatcher(){
+        NoticeCenter::Instance().addListener(this,Broadcast::kBroadcastMediaChanged,[this](BroadcastMediaChangedArgs){
+            if(bRegist){
+                onRegist(schema,vhost,app,stream,sender);
+            }else{
+                onUnRegist(schema,vhost,app,stream,sender);
+            }
+        });
+        NoticeCenter::Instance().addListener(this,Broadcast::kBroadcastMediaResetTracks,[this](BroadcastMediaResetTracksArgs){
+            onRegist(schema,vhost,app,stream,sender);
+        });
+    }
+
+    ~MediaSourceWatcher(){
+        NoticeCenter::Instance().delListener(this,Broadcast::kBroadcastMediaChanged);
+        NoticeCenter::Instance().delListener(this,Broadcast::kBroadcastMediaResetTracks);
+    }
+
+    void onRegist(const string &schema,const string &vhost,const string &app,const string &stream,MediaSource &sender){
+        auto key = getRecorderKey(vhost,app,stream);
+        lock_guard<decltype(_recorder_mtx)> lck(_recorder_mtx);
+        auto it = _recorder_map.find(key);
+        if(it == _recorder_map.end()){
+            // 录像记录不存在
+            return;
+        }
+
+        auto tracks = sender.getTracks(true);
+        if (tracks.empty()) {
+            // 无有效的tracks
+            return;
+        }
+
+        auto &helper = it->second;
+        if(!helper){
+            // 对象不存在,创建之
+            auto recorder = MediaSinkInterface::Ptr(createRecorder(vhost, app, stream));
+            if (recorder) {
+                _recorder_map[key] = std::make_shared<RecorderHelper>(recorder, std::move(tracks), false, schema);
+            }
+            return;
+        }
+
+        if(helper->getSchema() == schema){
+            // 对象存在且绑定的协议一致,替换tracks
+            helper->attachTracks(std::move(tracks));
+        }
+
+    }
+
+    void onUnRegist(const string &schema,const string &vhost,const string &app,const string &stream,MediaSource &sender){
+        auto key = getRecorderKey(vhost,app,stream);
+        lock_guard<decltype(_recorder_mtx)> lck(_recorder_mtx);
+        auto it = _recorder_map.find(key);
+        if(it == _recorder_map.end()){
+            // 录像记录不存在
+            return;
+        }
+
+        if(!it->second){
+            // 录像对象为空,已经停止录制
+            return;
+        }
+        if(it->second->continueRecord()){
+            // 如果可以继续录制，那么只重置tracks,不删除对象
+            it->second->resetTracks();
+        }else{
+            // 删除对象(意味着可能删除hls临时文件)
+            it->second.reset();
+        }
+    }
+
+    Recorder::status getRecordStatus_l(const string &key) {
+        auto it = _recorder_map.find(key);
+        if (it == _recorder_map.end()) {
+            return Recorder::status_not_record;
+        }
+        if (it->second && it->second->isRecording()) {
+            return Recorder::status_recording;
+        }
+
+        return Recorder::status_wait_record;
+    }
+
+    // 查找MediaSource以便录制
+    vector<Track::Ptr> findTracks(const string &vhost, const string &app, const string &stream_id,string &schema) {
+        auto src = MediaSource::find(RTMP_SCHEMA, vhost, app, stream_id);
+        if (src) {
+            auto ret = src->getTracks(true);
+            if (!ret.empty()) {
+                schema = RTMP_SCHEMA;
+                return std::move(ret);
+            }
+        }
+
+        src = MediaSource::find(RTSP_SCHEMA, vhost, app, stream_id);
+        if (src) {
+            schema = RTSP_SCHEMA;
+            return src->getTracks(true);
+        }
+        return vector<Track::Ptr>();
+    }
+
+    string getRecorderKey(const string &vhost, const string &app, const string &stream_id) {
+        return vhost + "/" + app + "/" + stream_id;
+    }
+
+    MediaSinkInterface *createRecorder(const string &vhost, const string &app, const string &stream_id) {
+        MediaSinkInterface *ret = nullptr;
+        switch (type) {
+            case Recorder::type_hls:
+                ret = createHlsRecorder(vhost, app, stream_id);
+                break;
+            case Recorder::type_mp4:
+                ret = createMP4Recorder(vhost, app, stream_id);
+                break;
+            default:
+                break;
+        }
+        if(!ret){
+            WarnL << "can not recorder of: " << type;
+        }
+        return ret;
+    }
+private:
+    recursive_mutex _recorder_mtx;
+    unordered_map<string, RecorderHelper::Ptr> _recorder_map;
+};
+
+
+Recorder::status Recorder::getRecordStatus(Recorder::type type, const string &vhost, const string &app, const string &stream_id) {
+    switch (type){
+        case type_mp4:
+            return MediaSourceWatcher<type_mp4>::Instance().getRecordStatus(vhost,app,stream_id);
+        case type_hls:
+            return MediaSourceWatcher<type_hls>::Instance().getRecordStatus(vhost,app,stream_id);
+    }
+    return status_not_record;
+}
+
+int Recorder::startRecord(Recorder::type type, const string &vhost, const string &app, const string &stream_id, bool waitForRecord, bool continueRecord) {
+    switch (type){
+        case type_mp4:
+            return MediaSourceWatcher<type_mp4>::Instance().startRecord(vhost,app,stream_id,waitForRecord,continueRecord);
+        case type_hls:
+            return MediaSourceWatcher<type_hls>::Instance().startRecord(vhost,app,stream_id,waitForRecord,continueRecord);
+    }
+    return -3;
+}
+
+void Recorder::stopRecord(Recorder::type type, const string &vhost, const string &app, const string &stream_id) {
+    switch (type){
+        case type_mp4:
+            return MediaSourceWatcher<type_mp4>::Instance().stopRecord(vhost,app,stream_id);
+        case type_hls:
+            return MediaSourceWatcher<type_hls>::Instance().stopRecord(vhost,app,stream_id);
+    }
+}
 
 } /* namespace mediakit */