HLS: Support config hls_ctx to disable HLS streaming.

trunk/conf/full.conf

@@ -1499,6 +1499,14 @@ vhost hls.srs.com {
         # the key root URL, use this can support https.
         # @remark It's optional.
         hls_key_url       https://localhost:8080;
+	# Whether enable hls_ctx.
+	# hls_ctx used to keep track of subsequent m3u8 requests.
+	# if on, hls client info can be collected in stat module,
+	# if on, on_play/on_stop can be called in http hook module.
+	# otherwise not;
+	# When request stopped, http hook or stat with special time effected, that is 2*hls_window, 
+	# Default: off
+	hls_ctx		on;
 
         # Special control controls.
         ###########################################

trunk/src/app/srs_app_config.cpp

@@ -2701,7 +2701,7 @@ srs_error_t SrsConfig::check_normal_config()
                         && m != "hls_storage" && m != "hls_mount" && m != "hls_td_ratio" && m != "hls_aof_ratio" && m != "hls_acodec" && m != "hls_vcodec"
                         && m != "hls_m3u8_file" && m != "hls_ts_file" && m != "hls_ts_floor" && m != "hls_cleanup" && m != "hls_nb_notify"
                         && m != "hls_wait_keyframe" && m != "hls_dispose" && m != "hls_keys" && m != "hls_fragments_per_key" && m != "hls_key_file"
-                        && m != "hls_key_file_path" && m != "hls_key_url" && m != "hls_dts_directly") {
+                        && m != "hls_key_file_path" && m != "hls_key_url" && m != "hls_dts_directly" && m != "hls_ctx") {
                         return srs_error_new(ERROR_SYSTEM_CONFIG_INVALID, "illegal vhost.hls.%s of %s", m.c_str(), vhost->arg0().c_str());
                     }
                     
@@ -6388,6 +6388,23 @@ bool SrsConfig::get_vhost_hls_dts_directly(string vhost)
     return SRS_CONF_PERFER_TRUE(conf->arg0());
 }
 
+bool SrsConfig::get_hls_ctx_enabled(std::string vhost)
+{
+    static bool DEFAULT = false;
+
+    SrsConfDirective* conf = get_hls(vhost);
+    if (!conf) {
+        return DEFAULT;
+    }
+
+    conf = conf->get("hls_ctx");
+    if (!conf || conf->arg0().empty()) {
+        return DEFAULT;
+    }
+
+    return SRS_CONF_PERFER_TRUE(conf->arg0());
+}
+
 bool SrsConfig::get_hls_cleanup(string vhost)
 {
     static bool DEFAULT = true;

trunk/src/app/srs_app_config.hpp

@@ -956,6 +956,8 @@ public:
     virtual int get_vhost_hls_nb_notify(std::string vhost);
     // Whether turn the FLV timestamp to TS DTS.
     virtual bool get_vhost_hls_dts_directly(std::string vhost);
+    // Whether enable hls_ctx
+    virtual bool get_hls_ctx_enabled(std::string vhost);
 // hds section
 private:
     // Get the hds directive of vhost.

trunk/src/app/srs_app_http_static.cpp

@@ -202,6 +202,10 @@ srs_error_t SrsVodStream::serve_m3u8_ctx(ISrsHttpResponseWriter * w, ISrsHttpMes
     }
 
     SrsAutoFree(SrsRequest, req);
+    
+    if (!_srs_config->get_hls_ctx_enabled(req->vhost)) {
+        return SrsHttpFileServer::serve_m3u8_ctx(w, r, fullpath);
+    }
 
     string ctx = hr->query_get(SRS_CONTEXT_IN_HLS);
     if (!ctx.empty() && ctx_is_exist(ctx)) {