Add a helper function for getting the super prototype of an object.

[movie_parser.git] / Atom.js

diff --git a/Atom.js b/Atom.js
index 7d15c3e2cf47579c14794fe3781b6f0a3f655cc1..52e9e59ab28031776fb70bf6bd4c89993c166f1a 100644 (file)
--- a/Atom.js
+++ b/Atom.js
@@ -38,6 +38,10 @@ Atom.create = function(buffer, offset) {
     }
 }
 
+Atom.prototype.super = function(object) {
+    return Object.getPrototypeOf(object.prototype);
+}
+
 Atom.prototype.setDefaults = function() {
     Object.defineProperty(this, "is64bit", {
             value: false,
@@ -133,13 +137,13 @@ Atom.prototype.getAtomsByType = function(type) {
 };
 
 var FileTypeAtom = function(buffer, offset) {
-    Object.getPrototypeOf(FileTypeAtom.prototype).constructor.call(this, buffer, offset);
+    this.super(FileTypeAtom).constructor.call(this, buffer, offset);
 }
 
 FileTypeAtom.prototype = Object.create(Atom.prototype);
 
 FileTypeAtom.prototype.setDefaults = function() {
-    Object.getPrototypeOf(FileTypeAtom.prototype).setDefaults.call(this);
+    this.super(FileTypeAtom).setDefaults.call(this);
     this.minimumSize = 16;
     this.brand = "";
     this.version = 0;
@@ -147,7 +151,7 @@ FileTypeAtom.prototype.setDefaults = function() {
 }
 
 FileTypeAtom.prototype.parse = function(buffer, offset) {
-    var headerOffset = Object.getPrototypeOf(FileTypeAtom.prototype).parse.call(this, buffer, offset);
+    var headerOffset = this.super(FileTypeAtom).parse.call(this, buffer, offset);
     if (!headerOffset)
         return 0;
 
@@ -170,18 +174,18 @@ FileTypeAtom.prototype.parse = function(buffer, offset) {
 }
 
 var ContainerAtom = function(buffer, offset) {
-    Object.getPrototypeOf(ContainerAtom.prototype).constructor.call(this, buffer, offset);
+    this.super(ContainerAtom).constructor.call(this, buffer, offset);
 }
 
 ContainerAtom.prototype = Object.create(Atom.prototype);
 
 ContainerAtom.prototype.setDefaults = function() {
-    Object.getPrototypeOf(ContainerAtom.prototype).setDefaults.call(this);
+    this.super(ContainerAtom).setDefaults.call(this);
     this.childAtoms = [];
 }
 
 ContainerAtom.prototype.parse = function(buffer, offset) {
-    var headerOffset = Object.getPrototypeOf(ContainerAtom.prototype).parse.call(this, buffer, offset);
+    var headerOffset = this.super(ContainerAtom).parse.call(this, buffer, offset);
     if (!headerOffset)
         return 0;
 
@@ -196,19 +200,19 @@ ContainerAtom.prototype.parse = function(buffer, offset) {
 }
 
 var VersionFlagsAtom = function(buffer, offset) {
-    Object.getPrototypeOf(VersionFlagsAtom.prototype).constructor.call(this, buffer, offset);
+    this.super(VersionFlagsAtom).constructor.call(this, buffer, offset);
 }
 
 VersionFlagsAtom.prototype = Object.create(Atom.prototype);
 
 VersionFlagsAtom.prototype.setDefaults = function() {
-    Object.getPrototypeOf(VersionFlagsAtom.prototype).setDefaults.call(this);
+    this.super(VersionFlagsAtom).setDefaults.call(this);
     this.version = 0;
     this.flags = 0;
 }
 
 VersionFlagsAtom.prototype.parse = function(buffer, offset) {
-    var headerOffset = Object.getPrototypeOf(VersionFlagsAtom.prototype).parse.call(this, buffer, offset);
+    var headerOffset = this.super(VersionFlagsAtom).parse.call(this, buffer, offset);
     if (!headerOffset)
         return 0;
 
@@ -225,13 +229,13 @@ VersionFlagsAtom.prototype.parse = function(buffer, offset) {
 }
 
 var MovieHeaderAtom = function(buffer, offset) {
-    return Object.getPrototypeOf(MovieHeaderAtom.prototype).constructor.call(this, buffer, offset);
+    return this.super(MovieHeaderAtom).constructor.call(this, buffer, offset);
 }
 
 MovieHeaderAtom.prototype = Object.create(VersionFlagsAtom.prototype);
 
 MovieHeaderAtom.prototype.setDefaults = function() {
-    Object.getPrototypeOf(MovieHeaderAtom.prototype).setDefaults.call(this);
+    this.super(MovieHeaderAtom).setDefaults.call(this);
     this.creationTime = 0;
     this.modificationTime = 0;
     this.timeScale = 0;
@@ -247,7 +251,7 @@ MovieHeaderAtom.prototype.setDefaults = function() {
 }
 
 MovieHeaderAtom.prototype.parse = function(buffer, offset) {
-    var headerOffset = Object.getPrototypeOf(MovieHeaderAtom.prototype).parse.call(this, buffer, offset);
+    var headerOffset = this.super(MovieHeaderAtom).parse.call(this, buffer, offset);
     if (!headerOffset)
         return 0;
 
@@ -325,13 +329,13 @@ MovieHeaderAtom.prototype.parse = function(buffer, offset) {
 }
 
 var TrackHeaderAtom = function(buffer, offset) {
-    Object.getPrototypeOf(TrackHeaderAtom.prototype).constructor.call(this, buffer, offset);
+    this.super(TrackHeaderAtom).constructor.call(this, buffer, offset);
 }
 
 TrackHeaderAtom.prototype = Object.create(Atom.prototype);
 
 TrackHeaderAtom.prototype.setDefaults = function() {
-    Object.getPrototypeOf(TrackHeaderAtom.prototype).setDefaults.call(this);
+    this.super(TrackHeaderAtom).setDefaults.call(this);
 
     this.creationTime = 0;
     this.modificationTime = 0;
@@ -346,7 +350,7 @@ TrackHeaderAtom.prototype.setDefaults = function() {
 }
 
 TrackHeaderAtom.prototype.parse = function(buffer, offset) {
-    var headerOffset = Object.getPrototypeOf(TrackHeaderAtom.prototype).parse.call(this, buffer, offset);
+    var headerOffset = this.super(TrackHeaderAtom).parse.call(this, buffer, offset);
     if (!headerOffset)
         return 0;
 
@@ -421,13 +425,13 @@ TrackHeaderAtom.prototype.parse = function(buffer, offset) {
 }
 
 var MediaHeaderAtom = function(buffer, offset) {
-    Object.getPrototypeOf(MediaHeaderAtom.prototype).constructor.call(this, buffer, offset);
+    this.super(MediaHeaderAtom).constructor.call(this, buffer, offset);
 }
 
 MediaHeaderAtom.prototype = Object.create(VersionFlagsAtom.prototype);
 
 MediaHeaderAtom.prototype.setDefaults = function() {
-    Object.getPrototypeOf(MediaHeaderAtom.prototype).setDefaults.call(this);
+    this.super(MediaHeaderAtom).setDefaults.call(this);
 
     this.creationTime = 0;
     this.modificationTime = 0;
@@ -438,7 +442,7 @@ MediaHeaderAtom.prototype.setDefaults = function() {
 }
 
 MediaHeaderAtom.prototype.parse = function(buffer, offset) {
-    var headerOffset = Object.getPrototypeOf(MediaHeaderAtom.prototype).parse.call(this, buffer, offset);
+    var headerOffset = this.super(MediaHeaderAtom).parse.call(this, buffer, offset);
     if (!headerOffset)
         return 0;
 
@@ -464,13 +468,13 @@ MediaHeaderAtom.prototype.parse = function(buffer, offset) {
 }
 
 var SyncSampleAtom = function(buffer, offset) {
-    Object.getPrototypeOf(SyncSampleAtom.prototype).constructor.call(this, buffer, offset);
+    this.super(SyncSampleAtom).constructor.call(this, buffer, offset);
 }
 
 SyncSampleAtom.prototype = Object.create(Atom.prototype);
 
 SyncSampleAtom.prototype.setDefaults = function() {
-    Object.getPrototypeOf(SyncSampleAtom.prototype).setDefaults.call(this);
+    this.super(SyncSampleAtom).setDefaults.call(this);
 
     this.version = 0;
     this.flags = 0;
@@ -479,7 +483,7 @@ SyncSampleAtom.prototype.setDefaults = function() {
 }
 
 SyncSampleAtom.prototype.parse = function(buffer, offset) {
-    var headerOffset = Object.getPrototypeOf(SyncSampleAtom.prototype).parse.call(this, buffer, offset);
+    var headerOffset = this.super(SyncSampleAtom).parse.call(this, buffer, offset);
     if (!headerOffset)
         return 0;
 
@@ -503,13 +507,13 @@ SyncSampleAtom.prototype.parse = function(buffer, offset) {
 }
 
 var TimeToSampleAtom = function(buffer, offset) {
-    Object.getPrototypeOf(TimeToSampleAtom.prototype).constructor.call(this, buffer, offset);
+    this.super(TimeToSampleAtom).constructor.call(this, buffer, offset);
 }
 
 TimeToSampleAtom.prototype = Object.create(VersionFlagsAtom.prototype);
 
 TimeToSampleAtom.prototype.setDefaults = function() {
-    Object.getPrototypeOf(TimeToSampleAtom.prototype).setDefaults.call(this);
+    this.super(TimeToSampleAtom).setDefaults.call(this);
 
     this.entries = 0;
     
@@ -522,7 +526,7 @@ TimeToSampleAtom.prototype.setDefaults = function() {
 }
 
 TimeToSampleAtom.prototype.parse = function(buffer, offset) {
-    var headerOffset = Object.getPrototypeOf(TimeToSampleAtom.prototype).parse.call(this, buffer, offset);
+    var headerOffset = this.super(TimeToSampleAtom).parse.call(this, buffer, offset);
     if (!headerOffset)
         return 0;