Ticket #1637: adaptive_audio_only.patch

src/com/longtailvideo/adaptive/muxing/AAC.as

@@ -15 +15 @@
         public static const SYNCWORD_2:uint =  0xFFF9;
         /** ADTS/ADIF sample rates index. **/
         public static const RATES:Array = 
-            [96000,88200,64000,48000,44100,32000,24000,22050,16000,12000,11025];
+            [96000,88200,64000,48000,44100,32000,24000,22050,16000,12000,11025,8000];
         /** ADIF profile index (ADTS doesn't have Null). **/
         public static const PROFILES:Array = ['Null','Main','LC','SSR','LTP','SBR'];
 

src/com/longtailvideo/adaptive/muxing/TS.as

@@ -44 +44 @@
             while(data.bytesAvailable) {
                 _readPacket(data);
             }
-            if (_videoPES.length == 0 || _audioPES.length == 0 ) {
-                throw new Error("No AAC audio or AVC video stream found.");
+            if (_videoPES.length == 0 && _audioPES.length == 0 ) {
+                throw new Error("No AAC audio and no AVC video stream found.");
             }
             // Extract the ADTS or MPEG audio frames.
             if(_aacId > 0) {
@@ -71 +71 @@
         /** Get video configuration data. **/
         public function getAVCC():ByteArray {
             if(_firstKey == -1) {
-                throw new Error("Cannot parse stream: no keyframe found in TS fragment.");
+                return new ByteArray();
             }
             return AVC.getAVCC(_videoPES[_firstKey].data,_videoPES[_firstKey].payload);
         };

src/com/longtailvideo/adaptive/streaming/Loader.as

@@ -124 +124 @@
             }
             // Push codecprivate tags only when switching.
             if(_switched) {
-                var avccTag:Tag = new Tag(Tag.AVC_HEADER,ts.videoTags[0].stamp,true,_level,_fragment);
-                avccTag.push(_levels[_level].avcc,0,_levels[_level].avcc.length);
-                tags.push(avccTag);
+                if (ts.videoTags.length > 0) {
+                        // Audio only file don't have videoTags[0]
+                        var avccTag:Tag = new Tag(Tag.AVC_HEADER,ts.videoTags[0].stamp,true,_level,_fragment);
+                        avccTag.push(_levels[_level].avcc,0,_levels[_level].avcc.length);
+                        tags.push(avccTag);
+                }
                 if(ts.audioTags[0].type == Tag.AAC_RAW) {
                     var adifTag:Tag = new Tag(Tag.AAC_HEADER,ts.audioTags[0].stamp,true,_level,_fragment);
                     adifTag.push(_levels[_level].adif,0,2)
@@ -159 +162 @@
                 }
             }
             if(level == -1) {
-                _adaptive.dispatchEvent(new AdaptiveEvent(AdaptiveEvent.ERROR,
-                    "None of the quality levels in this stream can be played."));
+                Log.txt("No other quality levels are available");
+                return;
             }
             // Then update with highest possible level.
             for(var j:Number = _levels.length - 1; j > 0; j--) {