add buffer time and play time display

 /**
+* padding the output.
+* padding(3, 5, '0') is 00003
+* padding(3, 5, 'x') is xxxx3
+* @see http://blog.csdn.net/win_lin/article/details/12065413
+*/
+function padding(number, length, prefix) {
+    if(String(number).length >= length){
+        return String(number);
+    }
+    return padding(prefix+number, length, prefix);
+}
+
+/**
 * update the navigator, add same query string.
 */
 function update_nav() {
@@ -88,7 +101,7 @@ function srs_init(rtmp_url, hls_url) {
 /**
 * the SrsPlayer object.
 */
-function SrsPlayer(container, stream_url, width, height, buffer_time) {
+function SrsPlayer(container, stream_url, width, height) {
     if (!SrsPlayer.__id) {
         SrsPlayer.__id = 100;
     }
@@ -102,12 +115,14 @@ function SrsPlayer(container, stream_url, width, height, buffer_time) {
     this.stream_url = stream_url;
     this.width = width;
     this.height = height;
-    this.buffer_time = buffer_time;
     this.id = SrsPlayer.__id++;
     this.callbackObj = null;
+    this.buffer_time = 0.8; // default to 0.8
     
     // callback set the following values.
     this.meatadata = {}; // for on_player_metadata
+    this.time = 0; // current stream time.
+    this.buffer_length = 0; // current stream buffer length.
 }
 /**
 * user can set some callback, then start the player.
@@ -121,6 +136,7 @@ SrsPlayer.prototype.start = function() {
     flashvars.id = this.id;
     flashvars.on_player_ready = "__srs_on_player_ready";
     flashvars.on_player_metadata = "__srs_on_player_metadata";
+    flashvars.on_player_timer = "__srs_on_player_timer";
     
     var params = {};
     params.wmode = "opaque";
@@ -144,7 +160,7 @@ SrsPlayer.prototype.start = function() {
     return this;
 }
 SrsPlayer.prototype.play = function() {
-    return this.callbackObj.ref.__play(this.stream_url, this.width, this.height, this.buffer_time);
+    this.callbackObj.ref.__play(this.stream_url, this.width, this.height, this.buffer_time);
 }
 SrsPlayer.prototype.stop = function() {
     for (var i = 0; i < SrsPlayer.__players.length; i++) {
@@ -157,13 +173,14 @@ SrsPlayer.prototype.stop = function() {
         SrsPlayer.__players.splice(i, 1);
         break;
     }
-    return this.callbackObj.ref.__stop();
+    
+    this.callbackObj.ref.__stop();
 }
 SrsPlayer.prototype.pause = function() {
-    return this.callbackObj.ref.__pause();
+    this.callbackObj.ref.__pause();
 }
 SrsPlayer.prototype.resume = function() {
-    return this.callbackObj.ref.__resume();
+    this.callbackObj.ref.__resume();
 }
 /**
 * to set the DAR, for example, DAR=16:9
@@ -175,7 +192,7 @@ SrsPlayer.prototype.resume = function() {
 *       use user specified width if -1.
 */
 SrsPlayer.prototype.dar = function(num, den) {
-    return this.callbackObj.ref.__dar(num, den);
+    this.callbackObj.ref.__dar(num, den);
 }
 /**
 * set the fullscreen size data.
@@ -186,13 +203,24 @@ SrsPlayer.prototype.dar = function(num, den) {
 *       100 means 100%.
 */
 SrsPlayer.prototype.set_fs = function(refer, percent) {
-    return this.callbackObj.ref.__set_fs(refer, percent);
+    this.callbackObj.ref.__set_fs(refer, percent);
+}
+/**
+* set the stream buffer time in seconds.
+* @buffer_time the buffer time in seconds.
+*/
+SrsPlayer.prototype.set_bt = function(buffer_time) {
+    this.buffer_time = buffer_time;
+    this.callbackObj.ref.__set_bt(buffer_time);
 }
 SrsPlayer.prototype.on_player_ready = function() {
-    return this.play();
+    this.play();
 }
 SrsPlayer.prototype.on_player_metadata = function(metadata) {
-    return 0;
+    // ignore.
+}
+SrsPlayer.prototype.on_player_timer = function(time, buffer_length) {
+    // ignore.
 }
 function __srs_on_player_ready(id) {
     for (var i = 0; i < SrsPlayer.__players.length; i++) {
@@ -202,7 +230,8 @@ function __srs_on_player_ready(id) {
             continue;
         }
         
-        return player.on_player_ready();
+        player.on_player_ready();
+        return;
     }
     
     throw new Error("player not found. id=" + id);
@@ -219,7 +248,30 @@ function __srs_on_player_metadata(id, metadata) {
         // so set the data before invoke it.
         player.metadata = metadata;
         
-        return player.on_player_metadata(metadata);
+        player.on_player_metadata(metadata);
+        return;
+    }
+    
+    throw new Error("player not found. id=" + id);
+}
+function __srs_on_player_timer(id, time, buffer_length) {
+    for (var i = 0; i < SrsPlayer.__players.length; i++) {
+        var player = SrsPlayer.__players[i];
+        
+        if (player.id != id) {
+            continue;
+        }
+        
+        buffer_length = Math.max(0, buffer_length);
+        buffer_length = Math.min(player.buffer_time, buffer_length);
+        
+        // user may override the on_player_timer, 
+        // so set the data before invoke it.
+        player.time = time;
+        player.buffer_length = buffer_length;
+        
+        player.on_player_timer(time, buffer_length);
+        return;
     }
     
     throw new Error("player not found. id=" + id);

@@ -40,6 +40,18 @@
             __active_size.addClass("active");
         }
         
+        var __active_bt = null;
+        function select_buffer_time(bt_id, buffer_time) {
+            srs_player.set_bt(buffer_time);
+            
+            if (__active_bt) {
+                __active_bt.removeClass("active");
+            }
+            
+            __active_bt = $(bt_id).parent();
+            __active_bt.addClass("active");
+        }
+        
         $(function(){
             // get the vhost and port to set the default url.
             // for example: http://192.168.1.213/players/jwplayer6.html?port=1935&vhost=demo
@@ -68,15 +80,38 @@
                 
                 var url = $("#txt_url").val();
                 
-                srs_player = new SrsPlayer("player_id", url, 530, 300, 0.8);
+                srs_player = new SrsPlayer("player_id", url, 530, 300);
                 srs_player.on_player_ready = function() {
-                    return srs_player.play();
+                    srs_player.play();
                 }
                 srs_player.on_player_metadata = function(metadata) {
                     $("#btn_dar_original").text("视频原始比例" + "(" + metadata.width + ":" + metadata.height + ")");
                     select_dar("#btn_dar_original", 0, 0);
                     select_fs_size("#btn_fs_size_screen_100", "screen", 100);
-                    return 0;
+                    select_buffer_time("#btn_bt_0_8", 0.8);
+                }
+                srs_player.on_player_timer = function(time, buffer_length) {
+                    var buffer = buffer_length / srs_player.buffer_time * 100;
+                    $("#pb_buffer").width(Number(buffer).toFixed(1) + "%");
+                    
+                    $("#pb_buffer_bg").attr("title", 
+                        "缓冲区长度:" + Number(buffer_length).toFixed(1) + "秒(" 
+                        + Number(buffer).toFixed(1) + "%)");
+                    
+                    var time_str = "";
+                    // day
+                    time_str = padding(parseInt(time / 24 / 3600), 2, '0') + " ";
+                    // hour
+                    time = time % (24 * 3600);
+                    time_str += padding(parseInt(time / 3600), 2, '0') + ":";
+                    // minute
+                    time = time % (3600);
+                    time_str += padding(parseInt(time / 60), 2, '0') + ":";
+                    // seconds
+                    time = time % (60);
+                    time_str += padding(parseInt(time), 2, '0');
+                    // show
+                    $("#txt_time").val(time_str);
                 }
                 srs_player.start();
             });
@@ -97,11 +132,11 @@
             });
             
             $("#btn_pause").click(function(){
-                if ($("#btn_pause").text() == "暂停播放") {
-                    $("#btn_pause").text("继续播放");
+                if ($("#btn_pause").text() == "暂停") {
+                    $("#btn_pause").text("继续");
                     srs_player.pause();
                 } else {
-                    $("#btn_pause").text("暂停播放");
+                    $("#btn_pause").text("暂停");
                     srs_player.resume();
                 }
             });
@@ -144,6 +179,33 @@
                     select_fs_size("#btn_fs_size_screen_50", "screen", 50);
                 });
             }
+            
+            if (true) {
+                $("#btn_bt_0_5").click(function(){
+                    select_buffer_time("#btn_bt_0_5", 0.5);
+                });
+                $("#btn_bt_0_8").click(function(){
+                    select_buffer_time("#btn_bt_0_8", 0.8);
+                });
+                $("#btn_bt_1").click(function(){
+                    select_buffer_time("#btn_bt_1", 1);
+                });
+                $("#btn_bt_2").click(function(){
+                    select_buffer_time("#btn_bt_2", 2);
+                });
+                $("#btn_bt_3").click(function(){
+                    select_buffer_time("#btn_bt_3", 3);
+                });
+                $("#btn_bt_5").click(function(){
+                    select_buffer_time("#btn_bt_5", 5);
+                });
+                $("#btn_bt_10").click(function(){
+                    select_buffer_time("#btn_bt_10", 10);
+                });
+                $("#btn_bt_30").click(function(){
+                    select_buffer_time("#btn_bt_30", 30);
+                });
+            }
         });
     </script>
 </head>
@@ -180,15 +242,23 @@
             <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
             <h3>SrsPlayer</h3>
         </div>
-        <div class="modal-body" id="player">
+        <div class="modal-body">
+            <div id="player"></div>
+            <div class="progress progress-striped active" id="pb_buffer_bg">
+                <div class="bar" style="width: 0%;" id="pb_buffer"></div>
+            </div>
         </div>
-        <div class="modal-footer">
+        <div class="modal-footer" style="margin-top:-20px;">
+            <div class="input-prepend" style="margin-top: 10px;">
+              <span class="add-on" title="播放时长">@T</span>
+              <input class="span2" style="width:85px" id="txt_time" type="text" placeholder="天 时:分:秒">
+            </div>
             <div class="btn-group dropup">
                 <button class="btn dropdown-toggle" data-toggle="dropdown">
                     <a id="fs_tips" href="#" data-toggle="tooltip" data-placement="top" title="">
                         <img src="img/tooltip.png"/>
                     </a>
-                    全屏大小<span class="caret"></span>
+                    大小<span class="caret"></span>
                 </button>
                 <ul class="dropdown-menu">
                     <li><a id="btn_fs_size_screen_100" href="#">屏幕大小(100%)</a></li>
@@ -200,7 +270,7 @@
                 </ul>
             </div>
             <div class="btn-group dropup">
-                <button class="btn dropdown-toggle" data-toggle="dropdown">显示比例<span class="caret"></span></button>
+                <button class="btn dropdown-toggle" data-toggle="dropdown">比例<span class="caret"></span></button>
                 <ul class="dropdown-menu">
                     <li><a id="btn_dar_original" href="#">视频原始比例</a></li>
                     <li><a id="btn_dar_21_9" href="#">宽屏影院(21:9)</a></li>
@@ -210,7 +280,20 @@
                 </ul>
             </div>
             <div class="btn-group dropup">
-                <button id="btn_pause" class="btn">暂停播放</button>
+                <button class="btn dropdown-toggle" data-toggle="dropdown">缓冲区<span class="caret"></span></button>
+                <ul class="dropdown-menu">
+                    <li><a id="btn_bt_0_5" href="#">0.5秒(实时)</a></li>
+                    <li><a id="btn_bt_0_8" href="#">0.8秒(会议)</a></li>
+                    <li><a id="btn_bt_1" href="#">1秒(低延迟)</a></li>
+                    <li><a id="btn_bt_2" href="#">2秒(较低延时)</a></li>
+                    <li><a id="btn_bt_3" href="#">3秒(流畅播放)</a></li>
+                    <li><a id="btn_bt_5" href="#">5秒(网速较低)</a></li>
+                    <li><a id="btn_bt_10" href="#">10秒(无所谓延迟)</a></li>
+                    <li><a id="btn_bt_30" href="#">30秒(流畅第一)</a></li>
+                </ul>
+            </div>
+            <div class="btn-group dropup">
+                <button id="btn_pause" class="btn">暂停</button>
             </div>
             <div class="btn-group dropup">
                 <button class="btn btn-primary" data-dismiss="modal" aria-hidden="true">关闭</button>

@@ -8,6 +8,7 @@ package
     import flash.events.FullScreenEvent;
     import flash.events.MouseEvent;
     import flash.events.NetStatusEvent;
+    import flash.events.TimerEvent;
     import flash.external.ExternalInterface;
     import flash.media.Video;
     import flash.net.NetConnection;
@@ -15,6 +16,7 @@ package
     import flash.system.Security;
     import flash.ui.ContextMenu;
     import flash.ui.ContextMenuItem;
+    import flash.utils.Timer;
     import flash.utils.setTimeout;
     
     public class srs_player extends Sprite
@@ -24,6 +26,7 @@ package
         // user set callback
         private var on_player_ready:String = null;
         private var on_player_metadata:String = null;
+        private var on_player_timer:String = null;
         
         // play param url.
         private var url:String = null;
@@ -41,6 +44,7 @@ package
         private var stream:NetStream = null;
         private var video:Video = null;
         private var metadata:Object = {};
+        private var timer:Timer = new Timer(300);
         
         // flash donot allow js to set to fullscreen,
         // only allow user click to enter fullscreen.
@@ -82,10 +86,25 @@ package
             this.id = flashvars.id;
             this.on_player_ready = flashvars.on_player_ready;
             this.on_player_metadata = flashvars.on_player_metadata;
+            this.on_player_timer = flashvars.on_player_timer;
+            
+            this.timer.addEventListener(TimerEvent.TIMER, this.on_timer);
+            this.timer.start();
             
             flash.utils.setTimeout(this.on_js_ready, 0);
         }
         
+        private function on_timer(evt:TimerEvent):void {
+            if (!this.stream) {
+                trace("stream is null, ignore timer event.");
+                return;
+            }
+            
+            trace("notify js the timer event.");
+            flash.external.ExternalInterface.call(
+                this.on_player_timer, this.id, this.stream.time, this.stream.bufferLength);
+        }
+        
         private function on_stage_fullscreen(evt:FullScreenEvent):void {
             if (!evt.fullScreen) {
                 execute_user_set_dar();
@@ -107,25 +126,21 @@ package
             flash.external.ExternalInterface.addCallback("__resume", this.js_call_resume);
             flash.external.ExternalInterface.addCallback("__dar", this.js_call_dar);
             flash.external.ExternalInterface.addCallback("__set_fs", this.js_call_set_fs_size);
+            flash.external.ExternalInterface.addCallback("__set_bt", this.js_call_set_bt);
             
-            var code:int = flash.external.ExternalInterface.call(this.on_player_ready, this.id);
-            if (code != 0) {
-                throw new Error("callback on_player_ready failed. code=" + code);
-            }
+            flash.external.ExternalInterface.call(this.on_player_ready, this.id);
         }
         
-        private function js_call_pause():int {
+        private function js_call_pause():void {
             if (this.stream) {
                 this.stream.pause();
             }
-            return 0;
         }
         
-        private function js_call_resume():int {
+        private function js_call_resume():void {
             if (this.stream) {
                 this.stream.resume();
             }
-            return 0;
         }
         
         /**
@@ -137,12 +152,11 @@ package
          *       use metadata width if 0.
          *       use user specified width if -1.
          */
-        private function js_call_dar(num:int, den:int):int {
+        private function js_call_dar(num:int, den:int):void {
             dar_num = num;
             dar_den = den;
             
             flash.utils.setTimeout(execute_user_set_dar, 0);
-            return 0;
         }
         
         /**
@@ -153,11 +167,9 @@ package
          * @param percent, the rescale percent, where
          *       100 means 100%.
          */
-        private function js_call_set_fs_size(refer:String, percent:int):int {
+        private function js_call_set_fs_size(refer:String, percent:int):void {
             fs_refer = refer;
             fs_percent = percent;
-            
-            return 0;
         }
         /**
         * js cannot enter the fullscreen mode, user must click to.
@@ -176,7 +188,17 @@ package
             }
         }
         
-        private function js_call_stop():int {
+        /**
+         * set the stream buffer time in seconds.
+         * @buffer_time the buffer time in seconds.
+         */
+        private function js_call_set_bt(buffer_time:Number):void {
+            if (this.stream) {
+                this.stream.bufferTime = buffer_time;
+            }
+        }
+        
+        private function js_call_stop():void {
             if (this.stream) {
                 this.stream.close();
                 this.stream = null;
@@ -189,8 +211,6 @@ package
                 this.removeChild(this.video);
                 this.video = null;
             }
-            
-            return 0;
         }
         
         private function draw_black_background(_width:int, _height:int):void {
@@ -205,7 +225,7 @@ package
             this.fs_mask.graphics.endFill();
         }
         
-        private function js_call_play(url:String, _width:int, _height:int, _buffer_time:Number):int {
+        private function js_call_play(url:String, _width:int, _height:int, _buffer_time:Number):void {
             this.url = url;
             this.w = _width;
             this.h = _height;
@@ -218,6 +238,8 @@ package
             this.conn.client.onBWDone = function():void {};
             this.conn.addEventListener(NetStatusEvent.NET_STATUS, function(evt:NetStatusEvent):void {
                 trace ("NetConnection: code=" + evt.info.code);
+                
+                // TODO: FIXME: failed event.
                 if (evt.info.code != "NetConnection.Connect.Success") {
                     return;
                 }
@@ -232,8 +254,12 @@ package
                     if (evt.info.code == "NetStream.Video.DimensionChange") {
                         on_metadata(metadata);
                     }
+                    
+                    // TODO: FIXME: failed event.
                 });
-                stream.play(url.substr(url.lastIndexOf("/")));
+                
+                var streamName:String = url.substr(url.lastIndexOf("/"));
+                stream.play(streamName);
                 
                 video = new Video();
                 video.width = _width;
@@ -247,9 +273,9 @@ package
                 // lowest layer, for mask to cover it.
                 setChildIndex(video, 0);
             });
-            this.conn.connect(this.url.substr(0, this.url.lastIndexOf("/")));
             
-            return 0;
+            var tcUrl:String = this.url.substr(0, this.url.lastIndexOf("/"));
+            this.conn.connect(tcUrl);
         }
         
         private function on_metadata(metadata:Object):void {