Add support for many new atom types.

[movie_parser.git] / AtomTester.html

diff --git a/AtomTester.html b/AtomTester.html
index d0bcbf133020e5d26f5e630ddd3b8789e1edbbfb..5d1d4dea0ebe90c73a8f3198f025a4040a32e1b5 100644 (file)
--- a/AtomTester.html
+++ b/AtomTester.html
@@ -3,45 +3,49 @@
     <title>AtomTester</title>
     <script src=Atom.js></script>
     <script>
+        // Add Blob.prototype.slice if it does not already exist:
+        if (typeof(Blob.prototype.slice) == 'undefined' && typeof(Blob.prototype.webkitSlice) != 'undefined')
+            Blob.prototype.slice = Blob.prototype.webkitSlice;
+
         var moovAtom;
         function onFileSelect(e) {
             var file = e.target.files[0];
             var reader = new FileReader();
             output.innerHTML = '';
             
-            function checkForMoovAtom(offset) {
+            function checkForAtom(offset) {
                 reader.onload = function(e) {
-                    var result = e.target.result;
-                    var basicAtom = new Atom(result);
-                    if (!basicAtom)
-                        return;
-                    else if (basicAtom.type == 'moov') 
-                        readMoovAtom(offset, basicAtom.size);
-                    else
-                        checkForMoovAtom(offset + basicAtom.size);
+                    var atom = new Atom();
+                    if (atom) {
+                        atom.parse(e.target.result, 0);
+                        readAtom(offset, atom.size);
+                    }
                 };
-                var subset = file.webkitSlice(offset, offset + 16);
+                var subset = file.slice(offset, offset + 36);
                 reader.readAsArrayBuffer(subset);
-            };
-            
-            function readMoovAtom(offset, length) {
-                reader.onload = function(e) { 
-                    moovAtom = Atom.create(e.target.result);
+            }
+
+            function readAtom(offset, length) {
+                reader.onload = function(e) {
+                    atom = Atom.create(e.target.result);
+                    if (!atom)
+                        return;
                     var output = document.getElementById('output');
-                    output.appendChild(toDOMNode(moovAtom));
+                    output.appendChild(toDOMNode(atom));
+                    if (file.size > offset + length)
+                        checkForAtom(offset + length);
                 };
-                var subset = file.webkitSlice(offset, offset + length);
+                var subset = file.slice(offset, offset + length);
                 reader.readAsArrayBuffer(subset);
-            };
+            }
             
-            checkForMoovAtom(0);
+            checkForAtom(0);
         }
-        
         function toDOMRepresentation(object)
         {
             if (object instanceof Atom)
                 return toDOMNode(object);
-            else if (object instanceof Array) {
+            else if (object instanceof Array || object instanceof Uint32Array)  {
                 var span = document.createElement('span');
                 span.appendChild(document.createTextNode('['));
                 for (var i = 0; i < object.length; ++i) {
@@ -56,13 +60,26 @@
                 return document.createTextNode('"' + object + '"');
             else if (object instanceof Date)
                 return document.createTextNode(object.toLocaleString());
-            else
+            else if (object instanceof Uint8Array) {
+                return Uint8ArrayNode(object);
+            } else if (object instanceof Object)
+                return toDOMNode(object);
+            else if (object === null)
+                               return document.createTextNode('[null]');
+                       else
                 return document.createTextNode(object.toString());
         }
         
         function toDOMNode(object)
         {
             var output = document.createElement('dl');
+            
+            if (typeof(object.description) == 'string') {
+                var div = document.createElement('div');
+                div.classList.add('description');
+                div.appendChild(document.createTextNode(object.description));
+                output.appendChild(div);
+            }
 
             for (property in object) {
                 var value = object[property];
@@ -70,7 +87,7 @@
                     continue;
                 var div = document.createElement('div');
                 var dt = document.createElement('dt');
-                dt.innerText = property;
+                dt.appendChild(document.createTextNode(property));
                 var dd = document.createElement('dd');
                 dd.appendChild(toDOMRepresentation(value));
                 div.appendChild(dt);
@@ -79,6 +96,29 @@
             }
             return output;
         }
+
+        function Uint8ArrayNode(array)
+        {
+            var table = document.createElement('table');
+            var width = 16;
+            for (var offset = 0; offset <= array.length; offset += width) {
+                var tr = document.createElement('tr');
+                table.appendChild(tr);
+
+                var th = document.createElement('th');
+                tr.appendChild(th);
+                th.innerText = ('0000000' + offset.toString(16)).substr(-8) + ':';
+
+                for (var column = 0; column < width && offset + column < array.length; column += 2) {
+                    var td = document.createElement('td');
+                    tr.appendChild(td);
+                    td.innerText = ('00' + array[offset + column].toString(16)).substr(-2);
+                    if (offset + column + 1 < array.length)
+                        td.innerText += ('00' + array[offset + column + 1].toString(16)).substr(-2);
+                }
+            }
+            return table;
+        }
         
         function setup() {
             document.getElementById('file').addEventListener('change', onFileSelect, false);
@@ -92,8 +132,10 @@
         dd dl { margin: 0; vertical-align: top }
         dd span { display: inline-block; vertical-align: top; }
 
-        dt, dd { display: inline-block; min-width: 8em; }
+        dt, dd { display: inline-block; min-width: 14em; }
         dd { margin-left: 1em; }
+        dd th { font-weight: normal; text-align: right; }
+        .description { text-align: center; font-weight: bold; }
         
         /* make the output display as a table */
         /*