8357287: Unify usage of ICC profile "header size" constants in CMM-related code

Reviewed-by: honkar, prr

Author: mrserb

src/java.desktop/share/classes/java/awt/color/ICC_Profile.java

@@ -57,6 +57,8 @@
 import sun.java2d.cmm.ProfileDataVerifier;
 import sun.java2d.cmm.ProfileDeferralInfo;
 
+import static sun.java2d.cmm.ProfileDataVerifier.HEADER_SIZE;
+
 /**
  * A representation of color profile data for device independent and device
  * dependent color spaces based on the International Color Consortium
@@ -764,8 +766,6 @@ private interface BuiltInProfile {
      */
     public static final int icXYZNumberX = 8;
 
-    private static final int HEADER_SIZE = 128;
-
     /**
      * Constructs an {@code ICC_Profile} object with a given ID.
      */
@@ -913,11 +913,11 @@ public static ICC_Profile getInstance(InputStream s) throws IOException {
 
     static byte[] getProfileDataFromStream(InputStream s) throws IOException {
         BufferedInputStream bis = new BufferedInputStream(s);
-        bis.mark(128); // 128 is the length of the ICC profile header
+        bis.mark(HEADER_SIZE);
 
-        byte[] header = bis.readNBytes(128);
-        if (header.length < 128 || header[36] != 0x61 || header[37] != 0x63 ||
-            header[38] != 0x73 || header[39] != 0x70) {
+        byte[] header = bis.readNBytes(HEADER_SIZE);
+        if (header.length < HEADER_SIZE || header[36] != 0x61 ||
+            header[37] != 0x63 || header[38] != 0x73 || header[39] != 0x70) {
             return null;   /* not a valid profile */
         }
         int profileSize = intFromBigEndian(header, 0);

src/java.desktop/share/classes/sun/java2d/cmm/ProfileDataVerifier.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -106,7 +106,7 @@ private static int readInt32(byte[] data, int off) {
      */
     private static final int MAX_TAG_COUNT = 100;
 
-    private static final int HEADER_SIZE = 128;
+    public static final int HEADER_SIZE = 128;
     private static final int TOC_OFFSET = HEADER_SIZE + 4;
     private static final int TOC_RECORD_SIZE = 12;