Add marker segment (PLT, PLM) and refactor TLM

src/core/jpx.js

@@ -187,11 +187,6 @@ var JpxImage = (function JpxImageClosure() {
               context.QCC = [];
               context.COC = [];
               break;
-            case 0xFF55: // Tile-part lengths, main header (TLM)
-              var Ltlm = readUint16(data, position); // Marker segment length
-              // Skip tile length markers
-              position += Ltlm;
-              break;
             case 0xFF5C: // Quantization default (QCD)
               length = readUint16(data, position);
               var qcd = {};
@@ -381,6 +376,9 @@ var JpxImage = (function JpxImageClosure() {
               length = tile.dataEnd - position;
               parseTilePackets(context, data, position, length);
               break;
+            case 0xFF55: // Tile-part lengths, main header (TLM)
+            case 0xFF57: // Packet length, main header (PLM)
+            case 0xFF58: // Packet length, tile-part header (PLT)
             case 0xFF64: // Comment (COM)
               length = readUint16(data, position);
               // skipping content
@@ -721,7 +719,7 @@ var JpxImage = (function JpxImageClosure() {
     r = 0;
     c = 0;
     p = 0;
-    
+
     this.nextPacket = function JpxImage_nextPacket() {
       // Section B.12.1.3 Resolution-position-component-layer
       for (; r <= maxDecompositionLevelsCount; r++) {
@@ -805,7 +803,7 @@ var JpxImage = (function JpxImageClosure() {
     var componentsCount = siz.Csiz;
     var precinctsSizes = getPrecinctSizesInImageScale(tile);
     var l = 0, r = 0, c = 0, px = 0, py = 0;
-    
+
     this.nextPacket = function JpxImage_nextPacket() {
       // Section B.12.1.5 Component-position-resolution-layer
       for (; c < componentsCount; ++c) {