dvr support plan and default session plan

@@ -288,39 +288,32 @@ int SrsFlvEncoder::write_tag(char* header, int header_size, char* tag, int tag_s
     return ret;
 }
 
-SrsDvr::SrsDvr(SrsSource* source)
+SrsDvrPlan::SrsDvrPlan()
 {
-    _source = source;
+    _source = NULL;
     dvr_enabled = false;
     fs = new SrsFileStream();
     enc = new SrsFlvEncoder();
 }
 
-SrsDvr::~SrsDvr()
+SrsDvrPlan::~SrsDvrPlan()
 {
     srs_freep(fs);
     srs_freep(enc);
 }
 
-int SrsDvr::on_publish(SrsRequest* req)
+int SrsDvrPlan::initialize(SrsSource* source)
 {
     int ret = ERROR_SUCCESS;
     
-    // support multiple publish.
-    if (dvr_enabled) {
-        return ret;
-    }
+    _source = source;
 
-    if (!_srs_config->get_dvr_enabled(req->vhost)) {
-        return ret;
-    }
-    
-    std::string path = _srs_config->get_dvr_path(req->vhost);
-    path += "/";
-    path += req->app;
-    path += "/";
-    path += req->stream;
-    path += ".flv";
+    return ret;
+}
+
+int SrsDvrPlan::flv_open(string stream, string path)
+{
+    int ret = ERROR_SUCCESS;
     
     if ((ret = fs->open(path)) != ERROR_SUCCESS) {
         srs_error("open file stream for file %s failed. ret=%d", path.c_str(), ret);
@@ -341,26 +334,16 @@ int SrsDvr::on_publish(SrsRequest* req)
         return ret;
     }
     
-    srs_trace("dvr stream %s to file %s", req->get_stream_url().c_str(), path.c_str());
-    dvr_enabled = true;
-    
+    srs_trace("dvr stream %s to file %s", stream.c_str(), path.c_str());
     return ret;
 }
 
-void SrsDvr::on_unpublish()
+int SrsDvrPlan::flv_close()
 {
-    // support multiple publish.
-    if (!dvr_enabled) {
-        return;
-    }
-    
-    // ignore error.
-    fs->close();
-    
-    dvr_enabled = false;
+    return fs->close();
 }
 
-int SrsDvr::on_meta_data(SrsOnMetaDataPacket* metadata)
+int SrsDvrPlan::on_meta_data(SrsOnMetaDataPacket* metadata)
 {
     int ret = ERROR_SUCCESS;
     
@@ -382,12 +365,10 @@ int SrsDvr::on_meta_data(SrsOnMetaDataPacket* metadata)
     return ret;
 }
 
-int SrsDvr::on_audio(SrsSharedPtrMessage* audio)
+int SrsDvrPlan::on_audio(SrsSharedPtrMessage* audio)
 {
     int ret = ERROR_SUCCESS;
     
-    SrsAutoFree(SrsSharedPtrMessage, audio, false);
-    
     if (!dvr_enabled) {
         return ret;
     }
@@ -402,12 +383,10 @@ int SrsDvr::on_audio(SrsSharedPtrMessage* audio)
     return ret;
 }
 
-int SrsDvr::on_video(SrsSharedPtrMessage* video)
+int SrsDvrPlan::on_video(SrsSharedPtrMessage* video)
 {
     int ret = ERROR_SUCCESS;
     
-    SrsAutoFree(SrsSharedPtrMessage, video, false);
-    
     if (!dvr_enabled) {
         return ret;
     }
@@ -422,5 +401,140 @@ int SrsDvr::on_video(SrsSharedPtrMessage* video)
     return ret;
 }
 
+SrsDvrPlan* SrsDvrPlan::create_plan()
+{
+    return new SrsDvrSessionPlan();
+}
+
+SrsDvrSessionPlan::SrsDvrSessionPlan()
+{
+}
+
+SrsDvrSessionPlan::~SrsDvrSessionPlan()
+{
+}
+
+int SrsDvrSessionPlan::on_publish(SrsRequest* req)
+{
+    int ret = ERROR_SUCCESS;
+    
+    // support multiple publish.
+    if (dvr_enabled) {
+        return ret;
+    }
+
+    if (!_srs_config->get_dvr_enabled(req->vhost)) {
+        return ret;
+    }
+    
+    std::string path = _srs_config->get_dvr_path(req->vhost);
+    path += "/";
+    path += req->app;
+    path += "/";
+    path += req->stream;
+    path += ".flv";
+    
+    if ((ret = flv_open(req->get_stream_url(), path)) != ERROR_SUCCESS) {
+        return ret;
+    }
+    dvr_enabled = true;
+    
+    return ret;
+}
+
+void SrsDvrSessionPlan::on_unpublish()
+{
+    // support multiple publish.
+    if (!dvr_enabled) {
+        return;
+    }
+    
+    // ignore error.
+    int ret = flv_close();
+    if (ret != ERROR_SUCCESS) {
+        srs_warn("ignore flv close error. ret=%d", ret);
+    }
+    
+    dvr_enabled = false;
+}
+
+SrsDvr::SrsDvr(SrsSource* source)
+{
+    _source = source;
+    plan = NULL;
+}
+
+SrsDvr::~SrsDvr()
+{
+    srs_freep(plan);
+}
+
+int SrsDvr::initialize()
+{
+    int ret = ERROR_SUCCESS;
+    
+    srs_freep(plan);
+    plan = SrsDvrPlan::create_plan();
+
+    if ((ret = plan->initialize(_source)) != ERROR_SUCCESS) {
+        return ret;
+    }
+    
+    return ret;
+}
+
+int SrsDvr::on_publish(SrsRequest* req)
+{
+    int ret = ERROR_SUCCESS;
+    
+    if ((ret = plan->on_publish(req)) != ERROR_SUCCESS) {
+        return ret;
+    }
+    
+    return ret;
+}
+
+void SrsDvr::on_unpublish()
+{
+    plan->on_unpublish();
+}
+
+int SrsDvr::on_meta_data(SrsOnMetaDataPacket* metadata)
+{
+    int ret = ERROR_SUCCESS;
+    
+    if ((ret = plan->on_meta_data(metadata)) != ERROR_SUCCESS) {
+        return ret;
+    }
+    
+    return ret;
+}
+
+int SrsDvr::on_audio(SrsSharedPtrMessage* audio)
+{
+    int ret = ERROR_SUCCESS;
+    
+    SrsAutoFree(SrsSharedPtrMessage, audio, false);
+    
+    if ((ret = plan->on_audio(audio)) != ERROR_SUCCESS) {
+        return ret;
+    }
+    
+    return ret;
+}
+
+int SrsDvr::on_video(SrsSharedPtrMessage* video)
+{
+    int ret = ERROR_SUCCESS;
+    
+    SrsAutoFree(SrsSharedPtrMessage, video, false);
+    
+    if ((ret = plan->on_video(video)) != ERROR_SUCCESS) {
+        return ret;
+    }
+    
+    return ret;
+}
+
 #endif
 

@@ -106,6 +106,57 @@ private:
 };
 
 /**
+* the plan for dvr.
+* use to control the following dvr params:
+* 1. filename: the filename for record file.
+* 2. reap flv: when to reap the flv and start new piece.
+*/
+class SrsDvrPlan
+{
+protected:
+    /**
+    * the underlayer dvr stream.
+    * if close, the flv is reap and closed.
+    * if open, new flv file is crote.
+    */
+    SrsFileStream* fs;
+    SrsFlvEncoder* enc;
+    bool dvr_enabled;
+    SrsSource* _source;
+public:
+    SrsDvrPlan();
+    virtual ~SrsDvrPlan();
+public:
+    virtual int initialize(SrsSource* source);
+    virtual int on_publish(SrsRequest* req) = 0;
+    virtual void on_unpublish() = 0;
+    virtual int on_meta_data(SrsOnMetaDataPacket* metadata);
+    virtual int on_audio(SrsSharedPtrMessage* audio);
+    virtual int on_video(SrsSharedPtrMessage* video);
+protected:
+    virtual int flv_open(std::string stream, std::string path);
+    virtual int flv_close();
+public:
+    static SrsDvrPlan* create_plan();
+};
+
+/**
+* default session plan:
+* 1. start dvr when session start(publish).
+* 2. stop dvr when session stop(unpublish).
+* 3. always dvr to file: dvr_path/app/stream.flv
+*/
+class SrsDvrSessionPlan : public SrsDvrPlan
+{
+public:
+    SrsDvrSessionPlan();
+    virtual ~SrsDvrSessionPlan();
+public:
+    virtual int on_publish(SrsRequest* req);
+    virtual void on_unpublish();
+};
+
+/**
 * dvr(digital video recorder) to record RTMP stream to flv file.
 * TODO: FIXME: add utest for it.
 */
@@ -114,14 +165,18 @@ class SrsDvr
 private:
     SrsSource* _source;
 private:
-    bool dvr_enabled;
-    SrsFileStream* fs;
-    SrsFlvEncoder* enc;
+    SrsDvrPlan* plan;
 public:
     SrsDvr(SrsSource* source);
     virtual ~SrsDvr();
 public:
     /**
+    * initialize dvr, create dvr plan.
+    * when system initialize(encoder publish at first time, or reload),
+    * initialize the dvr will reinitialize the plan, the whole dvr framework.
+    */
+    virtual int initialize();
+    /**
     * publish stream event, 
     * when encoder start to publish RTMP stream.
     */

@@ -276,7 +276,10 @@ int SrsRtmpConn::stream_service_cycle()
     srs_trace("set chunk_size=%d success", chunk_size);
     
     // find a source to serve.
-    SrsSource* source = SrsSource::find(req);
+    SrsSource* source = NULL;
+    if ((ret = SrsSource::find(req, &source)) != ERROR_SUCCESS) {
+        return ret;
+    }
     srs_assert(source != NULL);
     
     // check publish available.

@@ -413,17 +413,27 @@ int64_t SrsGopCache::get_start_time()
 
 std::map<std::string, SrsSource*> SrsSource::pool;
 
-SrsSource* SrsSource::find(SrsRequest* req)
+int SrsSource::find(SrsRequest* req, SrsSource** ppsource)
 {
+    int ret = ERROR_SUCCESS;
+    
     string stream_url = req->get_stream_url();
     string vhost = req->vhost;
     
     if (pool.find(stream_url) == pool.end()) {
-        pool[stream_url] = new SrsSource(req);
+        SrsSource* source = new SrsSource(req);
+        if ((ret = source->initialize()) != ERROR_SUCCESS) {
+            srs_freep(source);
+            return ret;
+        }
+        
+        pool[stream_url] = source;
         srs_info("create new source for url=%s, vhost=%s", stream_url.c_str(), vhost.c_str());
     }
     
-    return pool[stream_url];
+    *ppsource = pool[stream_url];
+    
+    return ret;
 }
 
 SrsSource::SrsSource(SrsRequest* _req)
@@ -492,6 +502,19 @@ SrsSource::~SrsSource()
     srs_freep(req);
 }
 
+int SrsSource::initialize()
+{
+    int ret = ERROR_SUCCESS;
+    
+#ifdef SRS_AUTO_DVR
+    if ((ret = dvr->initialize()) != ERROR_SUCCESS) {
+        return ret;
+    }
+#endif
+    
+    return ret;
+}
+
 int SrsSource::on_reload_vhost_atc(string vhost)
 {
     int ret = ERROR_SUCCESS;
@@ -614,11 +637,20 @@ int SrsSource::on_reload_vhost_dvr(string vhost)
     }
     
 #ifdef SRS_AUTO_DVR
+    // cleanup dvr
     dvr->on_unpublish();
+
+    // reinitialize the dvr, update plan.
+    if ((ret = dvr->initialize()) != ERROR_SUCCESS) {
+        return ret;
+    }
+
+    // start to publish by new plan.
     if ((ret = dvr->on_publish(req)) != ERROR_SUCCESS) {
         srs_error("dvr publish failed. ret=%d", ret);
         return ret;
     }
+    
     srs_trace("vhost %s dvr reload success", vhost.c_str());
 #endif
     

@@ -213,10 +213,10 @@ public:
     /**
     * find stream by vhost/app/stream.
     * @param req the client request.
-    * @return the matched source, never be NULL.
+    * @param ppsource the matched source, if success never be NULL.
     * @remark stream_url should without port and schema.
     */
-    static SrsSource* find(SrsRequest* req);
+    static int find(SrsRequest* req, SrsSource** ppsource);
 private:
     // deep copy of client request.
     SrsRequest* req;
@@ -271,6 +271,8 @@ public:
     */
     SrsSource(SrsRequest* _req);
     virtual ~SrsSource();
+public:
+    virtual int initialize();
 // interface ISrsReloadHandler
 public:
     virtual int on_reload_vhost_atc(std::string vhost);