fix time jitter zero algorithm bug, reset when timestamp overflow.

@@ -69,25 +69,32 @@ int SrsRtmpJitter::correct(SrsSharedPtrMessage* msg, int tba, int tbv, SrsRtmpJi
 {
 {
     int ret = ERROR_SUCCESS;
     int ret = ERROR_SUCCESS;
     
     
+    // for performance issue
+    if (ag != SrsRtmpJitterAlgorithmFULL) {
         // all jitter correct features is disabled, ignore.
         // all jitter correct features is disabled, ignore.
         if (ag == SrsRtmpJitterAlgorithmOFF) {
         if (ag == SrsRtmpJitterAlgorithmOFF) {
             return ret;
             return ret;
         }
         }
     
     
-
         // start at zero, but donot ensure monotonically increasing.
         // start at zero, but donot ensure monotonically increasing.
         if (ag == SrsRtmpJitterAlgorithmZERO) {
         if (ag == SrsRtmpJitterAlgorithmZERO) {
-        if (last_pkt_correct_time <= 0) {
+            // for the first time, last_pkt_correct_time is zero.
+            // while when timestamp overflow, the timestamp become smaller, reset the last_pkt_correct_time.
+            if (last_pkt_correct_time <= 0 || last_pkt_correct_time > msg->header.timestamp) {
                 last_pkt_correct_time = msg->header.timestamp;
                 last_pkt_correct_time = msg->header.timestamp;
             }
             }
             msg->header.timestamp -= last_pkt_correct_time;
             msg->header.timestamp -= last_pkt_correct_time;
             return ret;
             return ret;
         }
         }
         
         
+        // other algorithm, ignore.
+        return ret;
+    }
+    
     // full jitter algorithm, do jitter correct.
     // full jitter algorithm, do jitter correct.
     
     
     // set to 0 for metadata.
     // set to 0 for metadata.
-    if (!msg->header.is_video() && !msg->header.is_audio()) {
+    if (!msg->header.is_audio() && !msg->header.is_video()) {
         msg->header.timestamp = 0;
         msg->header.timestamp = 0;
         return ret;
         return ret;
     }
     }

@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 // current release version
 #define VERSION_MAJOR "0"
 #define VERSION_MAJOR "0"
 #define VERSION_MINOR "9"
 #define VERSION_MINOR "9"
-#define VERSION_REVISION "133"
+#define VERSION_REVISION "134"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"
 #define RTMP_SIG_SRS_KEY "SRS"