fix #108: disable the time jitter for encoder non-monotonical stream. 0.9.133

@@ -241,6 +241,7 @@ Supported operating systems and hardware:
 * 2013-10-17, Created.<br/>
 
 ## History
+* v1.0, 2014-06-25, fix [#108](https://github.com/winlinvip/simple-rtmp-server/issues/108), disable the time jitter for encoder non-monotonical stream. 0.9.133
 * v1.0, 2014-06-23, support report summaries in heartbeat. 0.9.132
 * v1.0, 2014-06-22, performance refine, support [3k+](https://github.com/winlinvip/simple-rtmp-server/wiki/Performance#%E6%80%A7%E8%83%BD%E4%BE%8B%E8%A1%8C%E6%8A%A5%E5%91%8A4k) connections(270kbps). 0.9.130
 * v1.0, 2014-06-21, support edge [token traverse](https://github.com/winlinvip/simple-rtmp-server/wiki/DRM#tokentraverse), fix [#104](https://github.com/winlinvip/simple-rtmp-server/issues/104). 0.9.129

@@ -187,6 +187,18 @@ vhost dvr.srs.com {
         # the param for plan(segment), in seconds.
         # default: 30
         dvr_duration    30;
+        # about the stream monotonically increasing:
+        #   1. video timestamp is monotonically increasing, 
+        #   2. audio timestamp is monotonically increasing,
+        #   3. video and audio timestamp is interleaved monotonically increasing.
+        # it's specified by RTMP specification, @see 3. Byte Order, Alignment, and Time Format
+        # however, some encoder cannot provides this feature, please set this to off to ignore time jitter.
+        # the time jitter algorithm:
+        #   1. full, to ensure stream start at zero, and ensure stream monotonically increasing.
+        #   2. zero, only ensure sttream start at zero, ignore timestamp jitter.
+        #   3. off, disable the time jitter algorithm, like atc.
+        # default: full
+        time_jitter             full;
     }
 }
 
@@ -906,6 +918,22 @@ vhost chunksize.srs.com {
     chunk_size      128;
 }
 
+# vhost for time jitter
+vhost jitter.srs.com {
+    # about the stream monotonically increasing:
+    #   1. video timestamp is monotonically increasing, 
+    #   2. audio timestamp is monotonically increasing,
+    #   3. video and audio timestamp is interleaved monotonically increasing.
+    # it's specified by RTMP specification, @see 3. Byte Order, Alignment, and Time Format
+    # however, some encoder cannot provides this feature, please set this to off to ignore time jitter.
+    # the time jitter algorithm:
+    #   1. full, to ensure stream start at zero, and ensure stream monotonically increasing.
+    #   2. zero, only ensure sttream start at zero, ignore timestamp jitter.
+    #   3. off, disable the time jitter algorithm, like atc.
+    # default: full
+    time_jitter             full;
+}
+
 # vhost for atc.
 vhost atc.srs.com {
     # vhost for atc for hls/hds/rtmp backup.

@@ -41,6 +41,7 @@ using namespace std;
 #include <srs_kernel_log.hpp>
 #include <srs_protocol_utility.hpp>
 #include <srs_core_autofree.hpp>
+#include <srs_app_source.hpp>
 
 #define SRS_WIKI_URL_LOG "https://github.com/winlinvip/simple-rtmp-server/wiki/SrsLog"
 
@@ -947,6 +948,17 @@ int SrsConfig::reload_vhost(SrsConfDirective* old_root)
                 }
                 srs_trace("vhost %s reload queue_length success.", vhost.c_str());
             }
+            // time_jitter, only one per vhost
+            if (!srs_directive_equals(new_vhost->get("time_jitter"), old_vhost->get("time_jitter"))) {
+                for (it = subscribes.begin(); it != subscribes.end(); ++it) {
+                    ISrsReloadHandler* subscribe = *it;
+                    if ((ret = subscribe->on_reload_vhost_time_jitter(vhost)) != ERROR_SUCCESS) {
+                        srs_error("vhost %s notify subscribes time_jitter failed. ret=%d", vhost.c_str(), ret);
+                        return ret;
+                    }
+                }
+                srs_trace("vhost %s reload time_jitter success.", vhost.c_str());
+            }
             // forward, only one per vhost
             if (!srs_directive_equals(new_vhost->get("forward"), old_vhost->get("forward"))) {
                 for (it = subscribes.begin(); it != subscribes.end(); ++it) {
@@ -1788,6 +1800,23 @@ bool SrsConfig::get_atc_auto(string vhost)
     return true;
 }
 
+int SrsConfig::get_time_jitter(string vhost)
+{
+    SrsConfDirective* dvr = get_vhost(vhost);
+    
+    std::string time_jitter = SRS_CONF_DEFAULT_TIME_JITTER;
+    
+    if (dvr) {
+        SrsConfDirective* conf = dvr->get("time_jitter");
+    
+        if (conf) {
+            time_jitter = conf->arg0();
+        }
+    }
+    
+    return _srs_time_jitter_string2int(time_jitter);
+}
+
 double SrsConfig::get_queue_length(string vhost)
 {
     SrsConfDirective* conf = get_vhost(vhost);
@@ -2636,6 +2665,23 @@ int SrsConfig::get_dvr_duration(string vhost)
     return ::atoi(conf->arg0().c_str());
 }
 
+int SrsConfig::get_dvr_time_jitter(string vhost)
+{
+    SrsConfDirective* dvr = get_dvr(vhost);
+    
+    std::string time_jitter = SRS_CONF_DEFAULT_TIME_JITTER;
+    
+    if (dvr) {
+        SrsConfDirective* conf = dvr->get("time_jitter");
+    
+        if (conf) {
+            time_jitter = conf->arg0();
+        }
+    }
+    
+    return _srs_time_jitter_string2int(time_jitter);
+}
+
 SrsConfDirective* SrsConfig::get_http_api()
 {
     return root->get("http_api");

@@ -49,6 +49,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #define SRS_CONF_DEFAULT_DVR_PLAN_HSS "hss"
 #define SRS_CONF_DEFAULT_DVR_PLAN SRS_CONF_DEFAULT_DVR_PLAN_SESSION
 #define SRS_CONF_DEFAULT_DVR_DURATION 30
+#define SRS_CONF_DEFAULT_TIME_JITTER "full"
 // in ms, for HLS aac sync time.
 #define SRS_CONF_DEFAULT_AAC_SYNC 100
 // in ms, for HLS aac flush the audio
@@ -200,6 +201,7 @@ public:
     virtual bool                get_gop_cache(std::string vhost);
     virtual bool                get_atc(std::string vhost);
     virtual bool                get_atc_auto(std::string vhost);
+    virtual int                 get_time_jitter(std::string vhost);
     virtual double              get_queue_length(std::string vhost);
     virtual SrsConfDirective*   get_forward(std::string vhost);
     virtual SrsConfDirective*   get_refer(std::string vhost);
@@ -272,6 +274,7 @@ public:
     virtual std::string         get_dvr_path(std::string vhost);
     virtual std::string         get_dvr_plan(std::string vhost);
     virtual int                 get_dvr_duration(std::string vhost);
+    virtual int                 get_dvr_time_jitter(std::string vhost);
 // http api section
 private:
     virtual SrsConfDirective*   get_http_api();

@@ -70,10 +70,15 @@ SrsDvrPlan::SrsDvrPlan()
     fs = new SrsFileStream();
     enc = new SrsFlvEncoder();
     segment = new SrsFlvSegment();
+    jitter_algorithm = SrsRtmpJitterAlgorithmOFF;
+    
+    _srs_config->subscribe(this);
 }
 
 SrsDvrPlan::~SrsDvrPlan()
 {
+    _srs_config->unsubscribe(this);
+    
     srs_freep(jitter);
     srs_freep(fs);
     srs_freep(enc);
@@ -86,6 +91,8 @@ int SrsDvrPlan::initialize(SrsSource* source, SrsRequest* req)
     
     _source = source;
     _req = req;
+    
+    jitter_algorithm = (SrsRtmpJitterAlgorithm)_srs_config->get_dvr_time_jitter(_req->vhost);
 
     return ret;
 }
@@ -198,7 +205,7 @@ int SrsDvrPlan::on_audio(SrsSharedPtrMessage* audio)
         return ret;
     }
     
-    if ((jitter->correct(audio, 0, 0)) != ERROR_SUCCESS) {
+    if ((jitter->correct(audio, 0, 0, jitter_algorithm)) != ERROR_SUCCESS) {
         return ret;
     }
     
@@ -240,7 +247,7 @@ int SrsDvrPlan::on_video(SrsSharedPtrMessage* video)
     srs_verbose("dvr video is key: %d", is_key_frame);
 #endif
     
-    if ((jitter->correct(video, 0, 0)) != ERROR_SUCCESS) {
+    if ((jitter->correct(video, 0, 0, jitter_algorithm)) != ERROR_SUCCESS) {
         return ret;
     }
     
@@ -256,6 +263,15 @@ int SrsDvrPlan::on_video(SrsSharedPtrMessage* video)
     return ret;
 }
 
+int SrsDvrPlan::on_reload_vhost_dvr(std::string vhost)
+{
+    int ret = ERROR_SUCCESS;
+    
+    jitter_algorithm = (SrsRtmpJitterAlgorithm)_srs_config->get_dvr_time_jitter(_req->vhost);
+    
+    return ret;
+}
+
 int SrsDvrPlan::flv_open(string stream, string path)
 {
     int ret = ERROR_SUCCESS;

@@ -42,6 +42,9 @@ class SrsSharedPtrMessage;
 class SrsFileStream;
 class SrsFlvEncoder;
 
+#include <srs_app_source.hpp>
+#include <srs_app_reload.hpp>
+
 /**
 * a piece of flv segment.
 */
@@ -93,21 +96,23 @@ public:
 * 2. reap flv: when to reap the flv and start new piece.
 */
 // TODO: FIXME: the plan is too fat, refine me.
-class SrsDvrPlan
+class SrsDvrPlan : public ISrsReloadHandler
 {
-protected:
+private:
     /**
     * 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;
-    SrsRequest* _req;
     SrsRtmpJitter* jitter;
+    SrsRtmpJitterAlgorithm jitter_algorithm;
+protected:
     SrsFlvSegment* segment;
+    SrsRequest* _req;
+    bool dvr_enabled;
+    SrsFileStream* fs;
 public:
     SrsDvrPlan();
     virtual ~SrsDvrPlan();
@@ -118,6 +123,9 @@ public:
     virtual int on_meta_data(SrsOnMetaDataPacket* metadata);
     virtual int on_audio(SrsSharedPtrMessage* audio);
     virtual int on_video(SrsSharedPtrMessage* video);
+// interface ISrsReloadHandler
+public:
+    virtual int on_reload_vhost_dvr(std::string vhost);
 protected:
     virtual int flv_open(std::string stream, std::string path);
     virtual int flv_close();

@@ -162,7 +162,7 @@ int SrsForwarder::on_meta_data(SrsSharedPtrMessage* metadata)
 {
     int ret = ERROR_SUCCESS;
     
-    if ((ret = jitter->correct(metadata, 0, 0)) != ERROR_SUCCESS) {
+    if ((ret = jitter->correct(metadata, 0, 0, SrsRtmpJitterAlgorithmFULL)) != ERROR_SUCCESS) {
         srs_freep(metadata);
         return ret;
     }
@@ -178,7 +178,7 @@ int SrsForwarder::on_audio(SrsSharedPtrMessage* msg)
 {
     int ret = ERROR_SUCCESS;
     
-    if ((ret = jitter->correct(msg, 0, 0)) != ERROR_SUCCESS) {
+    if ((ret = jitter->correct(msg, 0, 0, SrsRtmpJitterAlgorithmFULL)) != ERROR_SUCCESS) {
         srs_freep(msg);
         return ret;
     }
@@ -194,7 +194,7 @@ int SrsForwarder::on_video(SrsSharedPtrMessage* msg)
 {
     int ret = ERROR_SUCCESS;
     
-    if ((ret = jitter->correct(msg, 0, 0)) != ERROR_SUCCESS) {
+    if ((ret = jitter->correct(msg, 0, 0, SrsRtmpJitterAlgorithmFULL)) != ERROR_SUCCESS) {
         srs_freep(msg);
         return ret;
     }

@@ -1411,7 +1411,7 @@ int SrsHls::on_audio(SrsSharedPtrMessage* audio)
         return hls_cache->on_sequence_header(muxer);
     }
     
-    if ((ret = jitter->correct(audio, 0, 0)) != ERROR_SUCCESS) {
+    if ((ret = jitter->correct(audio, 0, 0, SrsRtmpJitterAlgorithmFULL)) != ERROR_SUCCESS) {
         srs_error("rtmp jitter correct audio failed. ret=%d", ret);
         return ret;
     }
@@ -1456,7 +1456,7 @@ int SrsHls::on_video(SrsSharedPtrMessage* video)
         return hls_cache->on_sequence_header(muxer);
     }
     
-    if ((ret = jitter->correct(video, 0, 0)) != ERROR_SUCCESS) {
+    if ((ret = jitter->correct(video, 0, 0, SrsRtmpJitterAlgorithmFULL)) != ERROR_SUCCESS) {
         srs_error("rtmp jitter correct video failed. ret=%d", ret);
         return ret;
     }

@@ -120,6 +120,11 @@ int ISrsReloadHandler::on_reload_vhost_queue_length(string /*vhost*/)
     return ERROR_SUCCESS;
 }
 
+int ISrsReloadHandler::on_reload_vhost_time_jitter(string /*vhost*/)
+{
+    return ERROR_SUCCESS;
+}
+
 int ISrsReloadHandler::on_reload_vhost_forward(string /*vhost*/)
 {
     return ERROR_SUCCESS;

@@ -61,6 +61,7 @@ public:
     virtual int on_reload_vhost_atc(std::string vhost);
     virtual int on_reload_vhost_gop_cache(std::string vhost);
     virtual int on_reload_vhost_queue_length(std::string vhost);
+    virtual int on_reload_vhost_time_jitter(std::string vhost);
     virtual int on_reload_vhost_forward(std::string vhost);
     virtual int on_reload_vhost_hls(std::string vhost);
     virtual int on_reload_vhost_dvr(std::string vhost);

@@ -45,6 +45,17 @@ using namespace std;
 #define CONST_MAX_JITTER_MS         500
 #define DEFAULT_FRAME_TIME_MS         40
 
+int _srs_time_jitter_string2int(std::string time_jitter)
+{
+    if (time_jitter == "full") {
+        return SrsRtmpJitterAlgorithmFULL;
+    } else if (time_jitter == "zero") {
+        return SrsRtmpJitterAlgorithmZERO;
+    } else {
+        return SrsRtmpJitterAlgorithmOFF;
+    }
+}
+
 SrsRtmpJitter::SrsRtmpJitter()
 {
     last_pkt_correct_time = last_pkt_time = 0;
@@ -54,10 +65,27 @@ SrsRtmpJitter::~SrsRtmpJitter()
 {
 }
 
-int SrsRtmpJitter::correct(SrsSharedPtrMessage* msg, int tba, int tbv)
+int SrsRtmpJitter::correct(SrsSharedPtrMessage* msg, int tba, int tbv, SrsRtmpJitterAlgorithm ag)
 {
     int ret = ERROR_SUCCESS;
+    
+    // all jitter correct features is disabled, ignore.
+    if (ag == SrsRtmpJitterAlgorithmOFF) {
+        return ret;
+    }
+
 
+    // start at zero, but donot ensure monotonically increasing.
+    if (ag == SrsRtmpJitterAlgorithmZERO) {
+        if (last_pkt_correct_time <= 0) {
+            last_pkt_correct_time = msg->header.timestamp;
+        }
+        msg->header.timestamp -= last_pkt_correct_time;
+        return ret;
+    }
+    
+    // full jitter algorithm, do jitter correct.
+    
     // set to 0 for metadata.
     if (!msg->header.is_video() && !msg->header.is_audio()) {
         msg->header.timestamp = 0;
@@ -266,12 +294,12 @@ int SrsConsumer::get_time()
     return jitter->get_time();
 }
 
-int SrsConsumer::enqueue(SrsSharedPtrMessage* msg, bool atc, int tba, int tbv)
+int SrsConsumer::enqueue(SrsSharedPtrMessage* msg, bool atc, int tba, int tbv, SrsRtmpJitterAlgorithm ag)
 {
     int ret = ERROR_SUCCESS;
     
     if (!atc) {
-        if ((ret = jitter->correct(msg, tba, tbv)) != ERROR_SUCCESS) {
+        if ((ret = jitter->correct(msg, tba, tbv, ag)) != ERROR_SUCCESS) {
             srs_freep(msg);
             return ret;
         }
@@ -384,7 +412,7 @@ void SrsGopCache::clear()
     cached_video_count = 0;
 }
     
-int SrsGopCache::dump(SrsConsumer* consumer, bool atc, int tba, int tbv)
+int SrsGopCache::dump(SrsConsumer* consumer, bool atc, int tba, int tbv, SrsRtmpJitterAlgorithm jitter_algorithm)
 {
     int ret = ERROR_SUCCESS;
     
@@ -392,7 +420,7 @@ int SrsGopCache::dump(SrsConsumer* consumer, bool atc, int tba, int tbv)
     for (it = gop_cache.begin(); it != gop_cache.end(); ++it) {
         SrsSharedPtrMessage* msg = *it;
         SrsSharedPtrMessage* copy = msg->copy();
-        if ((ret = consumer->enqueue(copy, atc, tba, tbv)) != ERROR_SUCCESS) {
+        if ((ret = consumer->enqueue(copy, atc, tba, tbv, jitter_algorithm)) != ERROR_SUCCESS) {
             srs_error("dispatch cached gop failed. ret=%d", ret);
             return ret;
         }
@@ -464,6 +492,7 @@ void SrsSource::destroy()
 SrsSource::SrsSource(SrsRequest* req)
 {
     _req = req->copy();
+    jitter_algorithm = SrsRtmpJitterAlgorithmOFF;
     
 #ifdef SRS_AUTO_HLS
     hls = new SrsHls(this);
@@ -549,6 +578,8 @@ int SrsSource::initialize()
     double queue_size = _srs_config->get_queue_length(_req->vhost);
     publish_edge->set_queue_size(queue_size);
     
+    jitter_algorithm = (SrsRtmpJitterAlgorithm)_srs_config->get_time_jitter(_req->vhost);
+    
     return ret;
 }
 
@@ -630,6 +661,19 @@ int SrsSource::on_reload_vhost_queue_length(string vhost)
     return ret;
 }
 
+int SrsSource::on_reload_vhost_time_jitter(string vhost)
+{
+    int ret = ERROR_SUCCESS;
+    
+    if (_req->vhost != vhost) {
+        return ret;
+    }
+    
+    jitter_algorithm = (SrsRtmpJitterAlgorithm)_srs_config->get_time_jitter(_req->vhost);
+    
+    return ret;
+}
+
 int SrsSource::on_reload_vhost_forward(string vhost)
 {
     int ret = ERROR_SUCCESS;
@@ -928,7 +972,7 @@ int SrsSource::on_meta_data(SrsMessage* msg, SrsOnMetaDataPacket* metadata)
         for (it = consumers.begin(); it != consumers.end(); ++it) {
             SrsConsumer* consumer = *it;
             SrsSharedPtrMessage* copy = cache_metadata->copy();
-            if ((ret = consumer->enqueue(copy, atc, sample_rate, frame_rate)) != ERROR_SUCCESS) {
+            if ((ret = consumer->enqueue(copy, atc, sample_rate, frame_rate, jitter_algorithm)) != ERROR_SUCCESS) {
                 srs_error("dispatch the metadata failed. ret=%d", ret);
                 return ret;
             }
@@ -992,7 +1036,7 @@ int SrsSource::on_audio(SrsMessage* audio)
         for (int i = 0; i < (int)consumers.size(); i++) {
             SrsConsumer* consumer = consumers.at(i);
             SrsSharedPtrMessage* copy = msg->copy();
-            if ((ret = consumer->enqueue(copy, atc, sample_rate, frame_rate)) != ERROR_SUCCESS) {
+            if ((ret = consumer->enqueue(copy, atc, sample_rate, frame_rate, jitter_algorithm)) != ERROR_SUCCESS) {
                 srs_error("dispatch the audio failed. ret=%d", ret);
                 return ret;
             }
@@ -1082,7 +1126,7 @@ int SrsSource::on_video(SrsMessage* video)
         for (int i = 0; i < (int)consumers.size(); i++) {
             SrsConsumer* consumer = consumers.at(i);
             SrsSharedPtrMessage* copy = msg->copy();
-            if ((ret = consumer->enqueue(copy, atc, sample_rate, frame_rate)) != ERROR_SUCCESS) {
+            if ((ret = consumer->enqueue(copy, atc, sample_rate, frame_rate, jitter_algorithm)) != ERROR_SUCCESS) {
                 srs_error("dispatch the video failed. ret=%d", ret);
                 return ret;
             }
@@ -1328,28 +1372,32 @@ void SrsSource::on_unpublish()
         }
     }
 
+    int tba = sample_rate;
+    int tbv = frame_rate;
+    SrsRtmpJitterAlgorithm ag = jitter_algorithm;
+    
     // copy metadata.
-    if (cache_metadata && (ret = consumer->enqueue(cache_metadata->copy(), atc, sample_rate, frame_rate)) != ERROR_SUCCESS) {
+    if (cache_metadata && (ret = consumer->enqueue(cache_metadata->copy(), atc, tba, tbv, ag)) != ERROR_SUCCESS) {
         srs_error("dispatch metadata failed. ret=%d", ret);
         return ret;
     }
     srs_info("dispatch metadata success");
     
     // copy sequence header
-    if (cache_sh_video && (ret = consumer->enqueue(cache_sh_video->copy(), atc, sample_rate, frame_rate)) != ERROR_SUCCESS) {
+    if (cache_sh_video && (ret = consumer->enqueue(cache_sh_video->copy(), atc, tba, tbv, ag)) != ERROR_SUCCESS) {
         srs_error("dispatch video sequence header failed. ret=%d", ret);
         return ret;
     }
     srs_info("dispatch video sequence header success");
     
-    if (cache_sh_audio && (ret = consumer->enqueue(cache_sh_audio->copy(), atc, sample_rate, frame_rate)) != ERROR_SUCCESS) {
+    if (cache_sh_audio && (ret = consumer->enqueue(cache_sh_audio->copy(), atc, tba, tbv, ag)) != ERROR_SUCCESS) {
         srs_error("dispatch audio sequence header failed. ret=%d", ret);
         return ret;
     }
     srs_info("dispatch audio sequence header success");
     
     // copy gop cache to client.
-    if ((ret = gop_cache->dump(consumer, atc, sample_rate, frame_rate)) != ERROR_SUCCESS) {
+    if ((ret = gop_cache->dump(consumer, atc, tba, tbv, ag)) != ERROR_SUCCESS) {
         return ret;
     }
     

@@ -60,6 +60,20 @@ class SrsEncoder;
 class SrsStream;
 
 /**
+* the time jitter algorithm:
+* 1. full, to ensure stream start at zero, and ensure stream monotonically increasing.
+* 2. zero, only ensure sttream start at zero, ignore timestamp jitter.
+* 3. off, disable the time jitter algorithm, like atc.
+*/
+enum SrsRtmpJitterAlgorithm
+{
+    SrsRtmpJitterAlgorithmFULL = 0x01,
+    SrsRtmpJitterAlgorithmZERO,
+    SrsRtmpJitterAlgorithmOFF
+};
+int _srs_time_jitter_string2int(std::string time_jitter);
+
+/**
 * time jitter detect and correct,
 * to ensure the rtmp stream is monotonically.
 */
@@ -74,8 +88,12 @@ public:
 public:
     /**
     * detect the time jitter and correct it.
+    * @param tba, the audio timebase, used to calc the "right" delta if jitter detected.
+    * @param tbv, the video timebase, used to calc the "right" delta if jitter detected.
+    * @param start_at_zero whether ensure stream start at zero.
+    * @param mono_increasing whether ensure stream is monotonically inscreasing.
     */
-    virtual int correct(SrsSharedPtrMessage* msg, int tba, int tbv);
+    virtual int correct(SrsSharedPtrMessage* msg, int tba, int tbv, SrsRtmpJitterAlgorithm ag);
     /**
     * get current client time, the last packet time.
     */
@@ -160,8 +178,9 @@ public:
     *         used to calc the audio time delta if time-jitter detected.
     * @param tbv timebase of video.
     *        used to calc the video time delta if time-jitter detected.
+    * @param ag the algorithm of time jitter.
     */
-    virtual int enqueue(SrsSharedPtrMessage* msg, bool atc, int tba, int tbv);
+    virtual int enqueue(SrsSharedPtrMessage* msg, bool atc, int tba, int tbv, SrsRtmpJitterAlgorithm ag);
     /**
     * get packets in consumer queue.
     * @pmsgs SrsMessages*[], used to store the msgs, user must alloc it.
@@ -209,7 +228,7 @@ public:
     */
     virtual int cache(SrsSharedPtrMessage* msg);
     virtual void clear();
-    virtual int dump(SrsConsumer* consumer, bool atc, int tba, int tbv);
+    virtual int dump(SrsConsumer* consumer, bool atc, int tba, int tbv, SrsRtmpJitterAlgorithm jitter_algorithm);
     /**
     * used for atc to get the time of gop cache,
     * the atc will adjust the sequence header timestamp to gop cache.
@@ -249,6 +268,8 @@ private:
     SrsRequest* _req;
     // to delivery stream to clients.
     std::vector<SrsConsumer*> consumers;
+    // the time jitter algorithm for vhost.
+    SrsRtmpJitterAlgorithm jitter_algorithm;
     // hls handler.
 #ifdef SRS_AUTO_HLS
     SrsHls* hls;
@@ -310,6 +331,7 @@ public:
     virtual int on_reload_vhost_atc(std::string vhost);
     virtual int on_reload_vhost_gop_cache(std::string vhost);
     virtual int on_reload_vhost_queue_length(std::string vhost);
+    virtual int on_reload_vhost_time_jitter(std::string vhost);
     virtual int on_reload_vhost_forward(std::string vhost);
     virtual int on_reload_vhost_hls(std::string vhost);
     virtual int on_reload_vhost_dvr(std::string vhost);

@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR "0"
 #define VERSION_MINOR "9"
-#define VERSION_REVISION "132"
+#define VERSION_REVISION "133"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"