refine code, rename the sync call to common class.

@@ -31,65 +31,65 @@ using namespace std;
 // the sleep interval for http async callback.
 #define SRS_AUTO_ASYNC_CALLBACL_SLEEP_US 300000
 
-ISrsDvrAsyncCall::ISrsDvrAsyncCall()
+ISrsAsyncCallTask::ISrsAsyncCallTask()
 {
 }
 
-ISrsDvrAsyncCall::~ISrsDvrAsyncCall()
+ISrsAsyncCallTask::~ISrsAsyncCallTask()
 {
 }
 
-SrsDvrAsyncCallThread::SrsDvrAsyncCallThread()
+SrsAsyncCallWorker::SrsAsyncCallWorker()
 {
     pthread = new SrsThread("async", this, SRS_AUTO_ASYNC_CALLBACL_SLEEP_US, true);
 }
 
-SrsDvrAsyncCallThread::~SrsDvrAsyncCallThread()
+SrsAsyncCallWorker::~SrsAsyncCallWorker()
 {
     stop();
     srs_freep(pthread);
 
-    std::vector<ISrsDvrAsyncCall*>::iterator it;
-    for (it = callbacks.begin(); it != callbacks.end(); ++it) {
-        ISrsDvrAsyncCall* call = *it;
-        srs_freep(call);
+    std::vector<ISrsAsyncCallTask*>::iterator it;
+    for (it = tasks.begin(); it != tasks.end(); ++it) {
+        ISrsAsyncCallTask* task = *it;
+        srs_freep(task);
     }
-    callbacks.clear();
+    tasks.clear();
 }
 
-int SrsDvrAsyncCallThread::call(ISrsDvrAsyncCall* c)
+int SrsAsyncCallWorker::execute(ISrsAsyncCallTask* t)
 {
     int ret = ERROR_SUCCESS;
 
-    callbacks.push_back(c);
+    tasks.push_back(t);
 
     return ret;
 }
 
-int SrsDvrAsyncCallThread::start()
+int SrsAsyncCallWorker::start()
 {
     return pthread->start();
 }
 
-void SrsDvrAsyncCallThread::stop()
+void SrsAsyncCallWorker::stop()
 {
     pthread->stop();
 }
 
-int SrsDvrAsyncCallThread::cycle()
+int SrsAsyncCallWorker::cycle()
 {
     int ret = ERROR_SUCCESS;
     
-    std::vector<ISrsDvrAsyncCall*> copies = callbacks;
-    callbacks.clear();
+    std::vector<ISrsAsyncCallTask*> copies = tasks;
+    tasks.clear();
 
-    std::vector<ISrsDvrAsyncCall*>::iterator it;
+    std::vector<ISrsAsyncCallTask*>::iterator it;
     for (it = copies.begin(); it != copies.end(); ++it) {
-        ISrsDvrAsyncCall* call = *it;
-        if ((ret = call->call()) != ERROR_SUCCESS) {
-            srs_warn("ignore async callback %s, ret=%d", call->to_string().c_str(), ret);
+        ISrsAsyncCallTask* task = *it;
+        if ((ret = task->call()) != ERROR_SUCCESS) {
+            srs_warn("ignore async callback %s, ret=%d", task->to_string().c_str(), ret);
         }
-        srs_freep(call);
+        srs_freep(task);
     }
 
     return ret;

@@ -42,29 +42,31 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  * a video and pass it to the dvr again.
  * futhurmore, the aync call never block the main worker thread.
  */
-class ISrsDvrAsyncCall
+class ISrsAsyncCallTask
 {
 public:
-    ISrsDvrAsyncCall();
-    virtual ~ISrsDvrAsyncCall();
+    ISrsAsyncCallTask();
+    virtual ~ISrsAsyncCallTask();
 public:
     virtual int call() = 0;
     virtual std::string to_string() = 0;
 };
 
 /**
-* the async callback for dvr.
-*/
-class SrsDvrAsyncCallThread : public ISrsThreadHandler
+ * the async callback for dvr.
+ * when worker call with the task, the worker will do it in isolate thread.
+ * that is, the task is execute/call in async mode.
+ */
+class SrsAsyncCallWorker : public ISrsThreadHandler
 {
 private:
     SrsThread* pthread;
-    std::vector<ISrsDvrAsyncCall*> callbacks;
+    std::vector<ISrsAsyncCallTask*> tasks;
 public:
-    SrsDvrAsyncCallThread();
-    virtual ~SrsDvrAsyncCallThread();
+    SrsAsyncCallWorker();
+    virtual ~SrsAsyncCallWorker();
 public:
-    virtual int call(ISrsDvrAsyncCall* c);
+    virtual int execute(ISrsAsyncCallTask* t);
 public:
     virtual int start();
     virtual void stop();

@@ -548,7 +548,7 @@ SrsDvrPlan::SrsDvrPlan()
 
     dvr_enabled = false;
     segment = new SrsFlvSegment(this);
-    async = new SrsDvrAsyncCallThread();
+    async = new SrsAsyncCallWorker();
 }
 
 SrsDvrPlan::~SrsDvrPlan()
@@ -629,7 +629,7 @@ int SrsDvrPlan::on_reap_segment()
 {
     int ret = ERROR_SUCCESS;
 
-    if ((ret = async->call(new SrsDvrAsyncCallOnDvr(req, segment->get_path()))) != ERROR_SUCCESS) {
+    if ((ret = async->execute(new SrsDvrAsyncCallOnDvr(req, segment->get_path()))) != ERROR_SUCCESS) {
         return ret;
     }
 

@@ -178,7 +178,7 @@ public:
 /**
 * the dvr async call.
 */
-class SrsDvrAsyncCallOnDvr : public ISrsDvrAsyncCall
+class SrsDvrAsyncCallOnDvr : public ISrsAsyncCallTask
 {
 private:
     std::string path;
@@ -206,7 +206,7 @@ public:
     SrsRequest* req;
 protected:
     SrsFlvSegment* segment;
-    SrsDvrAsyncCallThread* async;
+    SrsAsyncCallWorker* async;
     bool dvr_enabled;
 public:
     SrsDvrPlan();

@@ -286,7 +286,7 @@ SrsHlsMuxer::SrsHlsMuxer()
     acodec = SrsCodecAudioReserved1;
     should_write_cache = false;
     should_write_file = true;
-    async = new SrsDvrAsyncCallThread();
+    async = new SrsAsyncCallWorker();
     context = new SrsTsContext();
 }
 
@@ -669,7 +669,7 @@ int SrsHlsMuxer::segment_close(string log_desc)
         segments.push_back(current);
         
         // use async to call the http hooks, for it will cause thread switch.
-        if ((ret = async->call(new SrsDvrAsyncCallOnHls(req,
+        if ((ret = async->execute(new SrsDvrAsyncCallOnHls(req,
             current->full_path, current->uri, m3u8, m3u8_url,
             current->sequence_no, current->duration))) != ERROR_SUCCESS)
         {
@@ -677,7 +677,7 @@ int SrsHlsMuxer::segment_close(string log_desc)
         }
         
         // use async to call the http hooks, for it will cause thread switch.
-        if ((ret = async->call(new SrsDvrAsyncCallOnHlsNotify(req, current->uri))) != ERROR_SUCCESS) {
+        if ((ret = async->execute(new SrsDvrAsyncCallOnHlsNotify(req, current->uri))) != ERROR_SUCCESS) {
             return ret;
         }
     

@@ -159,7 +159,7 @@ public:
 /**
  * the hls async call: on_hls
  */
-class SrsDvrAsyncCallOnHls : public ISrsDvrAsyncCall
+class SrsDvrAsyncCallOnHls : public ISrsAsyncCallTask
 {
 private:
     std::string path;
@@ -180,7 +180,7 @@ public:
 /**
  * the hls async call: on_hls_notify
  */
-class SrsDvrAsyncCallOnHlsNotify : public ISrsDvrAsyncCall
+class SrsDvrAsyncCallOnHlsNotify : public ISrsAsyncCallTask
 {
 private:
     std::string ts_url;
@@ -215,7 +215,7 @@ private:
     double hls_aof_ratio;
     double hls_fragment;
     double hls_window;
-    SrsDvrAsyncCallThread* async;
+    SrsAsyncCallWorker* async;
 private:
     // whether use floor algorithm for timestamp.
     bool hls_ts_floor;