[WIP] more on that demux fun!

tweaked liboggz to reenable forward reconstruction of
vorbis granulepos, which slightly shaves down the demuxing
time which peaks when pulling apart a bunch of tiny vorbis
packets between frames.

Mostly an issue on very slow machines like 32-bit iOS
(tested iPad 3) where it can be ~15ms at best and 30-60ms
spikes are not uncommon.

demo/demo.js

@@ -837,7 +837,8 @@
 				maxmem = 1024 * 1024 * 128;
 			}
 			//var debugFilter = /setting a timer|ready to draw frame|decode frame|decoded frame|drew frame/;
-			var debugFilter = /drew frame.*mux: [^0]|audio checkin/;
+			var debugFilter = /drew frame.*mux: [^0]/;
+			//var debugFilter = /drew frame.*mux: [^0]|audio checkin/;
 			if (playerBackend == 'js') {
 				player = new OGVPlayer({
 					debug: true,

src/js/OGVPlayer.js

@@ -1360,7 +1360,7 @@ var OGVPlayer = function(options) {
 			// @todo networkState == NETWORK_LOADING
 			stream = new StreamFile({
 				url: self.src,
-				bufferSize: 512, //4096, // 32768, //65536 * 4,
+				bufferSize: 32768, //65536 * 4,
 				onstart: function() {
 					waitingOnInput = false;
 					loading = false;

src/js/OGVWrapperCodec.js

@@ -264,7 +264,7 @@ var OGVWrapperCodec = (function(options) {
 		function doProcessData() {
 			if (inputQueue.length) {
 				var data = inputQueue.shift();
-				console.log('demuxing ' + data.byteLength);
+				//console.log('demuxing ' + data.byteLength);
 				demuxer.process(data, finish);
 			} else {
 				// out of data! ask for more

src/js/modules/ogv-demuxer.js

@@ -26,7 +26,9 @@ function time(func) {
 	var start = getTimestamp(),
 		ret;
 	ret = func();
-	Module.cpuTime += (getTimestamp() - start);
+	var delta = (getTimestamp() - start);
+	Module.cpuTime += delta;
+	console.log('demux time ' + delta);
 	return ret;
 }