Use MutableInteger as context for LASreadItem.read() and LASreadItemC…

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItem.java

@@ -12,5 +12,5 @@
 
 public abstract class LASreadItem {
 
-    public abstract PointDataRecord read(int context);
+    public abstract PointDataRecord read(MutableInteger context);
 }

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed.java

@@ -12,6 +12,6 @@
 
 public abstract class LASreadItemCompressed extends LASreadItem {
 
-    public abstract void init(PointDataRecord seedItem, int context);
+    public abstract void init(PointDataRecord seedItem, MutableInteger context);
     public abstract boolean chunk_sizes();
 }

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_BYTE14_v3.java

@@ -93,7 +93,7 @@ public LASreadItemCompressed_BYTE14_v3(IByteStreamInProvider instreamProvider, i
     }
 
     @Override
-    public void init(PointDataRecord seedItem, int context) {
+    public void init(PointDataRecord seedItem, MutableInteger context) {
 
         int i;
 
@@ -183,7 +183,7 @@ public void init(PointDataRecord seedItem, int context) {
 
         /* set scanner channel as current context */
 
-        current_context = context; // all other items use context set by POINT14 reader
+        current_context = context.get(); // all other items use context set by POINT14 reader
 
         /* create and init models and decompressors */
 
@@ -206,22 +206,22 @@ public boolean chunk_sizes() {
     }
 
     @Override
-    public PointDataRecord read(int context) {
+    public PointDataRecord read(MutableInteger context) {
         // get last
 
         PointDataRecordBytes last_item = contexts[current_context].last_item;
 
         // check for context switch
 
-        if (current_context != context)
+        if (current_context != context.get())
         {
-            current_context = context; // all other items use context set by POINT14 reader
+            current_context = context.get(); // all other items use context set by POINT14 reader
             if (contexts[current_context].unused)
             {
                 createAndInitModelsAndDecompressors(current_context, last_item);
+                last_item = contexts[current_context].last_item;
             }
-            last_item = contexts[current_context].last_item;
-          }
+        }
 
         // decompress
         PointDataRecordBytes result = new PointDataRecordBytes(number);

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_BYTE_v1.java

@@ -29,7 +29,7 @@ public LASreadItemCompressed_BYTE_v1(ArithmeticDecoder dec, int number)
     }
 
     @Override	
-    public void init(PointDataRecord seedItem, int notUsed)
+    public void init(PointDataRecord seedItem, MutableInteger notUsed)
     {
         /* init state */
 
@@ -41,7 +41,7 @@ public void init(PointDataRecord seedItem, int notUsed)
     }
 
     @Override	
-    public PointDataRecord read(int notUsed)
+    public PointDataRecord read(MutableInteger notUsed)
     {
         PointDataRecordBytes result = new PointDataRecordBytes(number);
 

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_BYTE_v2.java

@@ -39,7 +39,7 @@ public LASreadItemCompressed_BYTE_v2(ArithmeticDecoder dec, int number)
     }
 
     @Override	
-    public void init(PointDataRecord seedItem, int notUsed)
+    public void init(PointDataRecord seedItem, MutableInteger notUsed)
     {
         int i;
         /* init state */
@@ -54,7 +54,7 @@ public void init(PointDataRecord seedItem, int notUsed)
     }
 
     @Override	
-    public PointDataRecord read(int notUsed)
+    public PointDataRecord read(MutableInteger notUsed)
     {
         PointDataRecordBytes result = new PointDataRecordBytes(number);
 

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_GPSTIME11_v1.java

@@ -37,7 +37,7 @@ public LASreadItemCompressed_GPSTIME11_v1(ArithmeticDecoder dec)
     }
 
     @Override
-    public void init(PointDataRecord seedItem, int notUsed)
+    public void init(PointDataRecord seedItem, MutableInteger notUsed)
     {
         /* init state */
         last_gpstime_diff = 0;
@@ -52,7 +52,7 @@ public void init(PointDataRecord seedItem, int notUsed)
     }
 
     @Override
-    public PointDataRecordGpsTime read(int notUsed)
+    public PointDataRecordGpsTime read(MutableInteger notUsed)
     {
         int multi;
         if (last_gpstime_diff == 0) // if the last integer difference was zero

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_GPSTIME11_v2.java

@@ -42,7 +42,7 @@ public LASreadItemCompressed_GPSTIME11_v2(ArithmeticDecoder dec)
     }
 
     @Override
-    public void init(PointDataRecord seedItem, int notUsed)
+    public void init(PointDataRecord seedItem, MutableInteger notUsed)
     {
         /* init state */
         last = 0; next = 0;
@@ -68,7 +68,7 @@ public void init(PointDataRecord seedItem, int notUsed)
     }
 
     @Override
-    public PointDataRecord read(int notUsed)
+    public PointDataRecord read(MutableInteger notUsed)
     {
         PointDataRecordGpsTime result = new PointDataRecordGpsTime();
 

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_POINT10_v1.java

@@ -53,7 +53,7 @@ public LASreadItemCompressed_POINT10_v1(ArithmeticDecoder dec) {
     }
 
     @Override
-    public void init(PointDataRecord seedItem, int notUsed) {
+    public void init(PointDataRecord seedItem, MutableInteger notUsed) {
 
         int i;
 
@@ -81,7 +81,7 @@ public void init(PointDataRecord seedItem, int notUsed) {
     }
 
     @Override
-    public PointDataRecord read(int notUsed) {
+    public PointDataRecord read(MutableInteger notUsed) {
 
         // find median difference for x and y from 3 preceding differences
         int median_x;

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_POINT10_v2.java

@@ -62,7 +62,7 @@ public LASreadItemCompressed_POINT10_v2(ArithmeticDecoder dec)
     }
 
     @Override	
-    public void init(PointDataRecord seedItem, int notUsed)
+    public void init(PointDataRecord seedItem, MutableInteger notUsed)
     {
         int i; // unsigned
 
@@ -99,7 +99,7 @@ public void init(PointDataRecord seedItem, int notUsed)
     }
 
     @Override	
-    public PointDataRecord read(int notUsed)
+    public PointDataRecord read(MutableInteger notUsed)
     {
         int r, n, m, l; // unsigned
         int k_bits; // unsigned

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_POINT14_v3.java

@@ -154,7 +154,7 @@ public LASreadItemCompressed_POINT14_v3(IByteStreamInProvider instreamProvider,
     }
 
     @Override
-    public void init(PointDataRecord seedItem, int notUsed) {
+    public void init(PointDataRecord seedItem, MutableInteger context) {
 
         ByteStreamIn instream = instreamProvider.getByteStreamIn();
 
@@ -404,14 +404,15 @@ public void init(PointDataRecord seedItem, int notUsed) {
         /* set scanner channel as current context */
 
         current_context = ((PointDataRecordPoint14)seedItem).getScannerChannel();
+        context.set(current_context); // the POINT14 reader sets context for all other items
 
         /* create and init models and decompressors */
 
         createAndInitModelsAndDecompressors(current_context, (PointDataRecordPoint14)seedItem);
     }
 
     @Override
-    public PointDataRecord read(int context) 
+    public PointDataRecord read(MutableInteger context)
     {
         // get last
 
@@ -449,6 +450,7 @@ public PointDataRecord read(int context)
             }
             // switch context to current scanner channel
             current_context = scanner_channel;
+            context.set(current_context); // the POINT14 reader sets context for all other items
 
             // get last for new context
             last_item = contexts[current_context].last_item;

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_RGB12_v1.java

@@ -32,7 +32,7 @@ public LASreadItemCompressed_RGB12_v1(ArithmeticDecoder dec)
     }
 
     @Override	
-    public void init(PointDataRecord seedItem, int notUsed)
+    public void init(PointDataRecord seedItem, MutableInteger notUsed)
     {
         /* init state */
 
@@ -44,7 +44,7 @@ public void init(PointDataRecord seedItem, int notUsed)
     }
 
     @Override	
-    public PointDataRecord read(int notUsed)
+    public PointDataRecord read(MutableInteger notUsed)
     {       
         PointDataRecordRGB result = new PointDataRecordRGB();
 

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_RGB12_v2.java

@@ -43,7 +43,7 @@ public LASreadItemCompressed_RGB12_v2(ArithmeticDecoder dec)
     }
 
     @Override
-    public void init(PointDataRecord seedItem, int notUsed)
+    public void init(PointDataRecord seedItem, MutableInteger notUsed)
     {
         /* init state */
 
@@ -60,7 +60,7 @@ public void init(PointDataRecord seedItem, int notUsed)
     }
 
     @Override
-    public PointDataRecord read(int notUsed)
+    public PointDataRecord read(MutableInteger notUsed)
     {
         int corr;
         int diff = 0;

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_RGB14_v3.java

@@ -51,7 +51,7 @@ public LASreadItemCompressed_RGB14_v3(IByteStreamInProvider instreamProvider, in
   }
 
   @Override
-  public void init(PointDataRecord seedItem, int context) {
+  public void init(PointDataRecord seedItem, MutableInteger context) {
 
     ByteStreamIn instream = instreamProvider.getByteStreamIn();
 
@@ -101,7 +101,7 @@ public void init(PointDataRecord seedItem, int context) {
         contexts[c].unused = true;
     }
 
-    current_context = context; // all other items use context set by POINT14 reader
+    current_context = context.get(); // all other items use context set by POINT14 reader
 
     createAndInitModelsAndDecompressors(current_context, (PointDataRecordRGB)seedItem);
   }
@@ -118,7 +118,7 @@ public boolean chunk_sizes() {
   }
 
   @Override
-  public PointDataRecord read(int context) {
+  public PointDataRecord read(MutableInteger context) {
 
     PointDataRecordRGB result = new PointDataRecordRGB();
 
@@ -127,14 +127,14 @@ public PointDataRecord read(int context) {
 
     // check for context switch
 
-    if (current_context != context)
+    if (current_context != context.get())
     {
-        current_context = context; // all other items use context set by POINT14 reader
+        current_context = context.get(); // all other items use context set by POINT14 reader
         if (contexts[current_context].unused)
         {
             createAndInitModelsAndDecompressors(current_context, last_item);
+            last_item = contexts[current_context].last_item;
         }
-        last_item = contexts[current_context].last_item;
     }
 
     // decompress

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_RGBNIR14_v3.java

@@ -76,7 +76,7 @@ public LASreadItemCompressed_RGBNIR14_v3(IByteStreamInProvider instreamProvider,
     }
 
     @Override
-    public void init(PointDataRecord seedItem, int context) {
+    public void init(PointDataRecord seedItem, MutableInteger context) {
 
         ByteStreamIn instream = instreamProvider.getByteStreamIn();
 
@@ -156,7 +156,7 @@ public void init(PointDataRecord seedItem, int context) {
 
         /* set scanner channel as current context */
 
-        current_context = context; // all other items use context set by POINT14 reader
+        current_context = context.get(); // all other items use context set by POINT14 reader
 
         /* create and init models and decompressors */
 
@@ -176,22 +176,22 @@ public boolean chunk_sizes() {
     }
 
     @Override
-    public PointDataRecord read(int context) {
+    public PointDataRecord read(MutableInteger context) {
 
         // get last
 
         PointDataRecordRgbNIR last_item = contexts[current_context].last_item;
 
         // check for context switch
 
-        if (current_context != context)
+        if (current_context != context.get())
         {
-            current_context = context; // all other items use context set by POINT14 reader
+            current_context = context.get(); // all other items use context set by POINT14 reader
             if (contexts[current_context].unused)
             {
                 createAndInitModelsAndDecompressors(current_context, last_item);
+                last_item = contexts[current_context].last_item;
             }
-            last_item = contexts[current_context].last_item;
         }
 
         // decompress

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_WAVEPACKET13_v1.java

@@ -45,7 +45,7 @@ public LASreadItemCompressed_WAVEPACKET13_v1(ArithmeticDecoder dec)
         last_item = null;
     }
 
-    public void init(PointDataRecord seedItem, int notUsed)
+    public void init(PointDataRecord seedItem, MutableInteger notUsed)
     {
         /* init state */
         last_diff_32 = 0;
@@ -66,7 +66,7 @@ public void init(PointDataRecord seedItem, int notUsed)
         last_item = new PointDataRecordWavepacket((PointDataRecordWavepacket)seedItem);
     }
 
-    public PointDataRecord read(int notUsed)
+    public PointDataRecord read(MutableInteger notUsed)
     {
         PointDataRecordWavepacket result = new PointDataRecordWavepacket();
         result.DescriptorIndex = (short)dec.decodeSymbol(m_packet_index);

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemCompressed_WAVEPACKET14_v3.java

@@ -61,7 +61,7 @@ public LASreadItemCompressed_WAVEPACKET14_v3(IByteStreamInProvider instreamProvi
     }
 
     @Override
-    public void init(PointDataRecord seedItem, int context) {
+    public void init(PointDataRecord seedItem, MutableInteger context) {
 
         ByteStreamIn instream = instreamProvider.getByteStreamIn();
 
@@ -114,7 +114,7 @@ public void init(PointDataRecord seedItem, int context) {
 
         /* set scanner channel as current context */
 
-        current_context = context; // all other items use context set by POINT14 reader
+        current_context = context.get(); // all other items use context set by POINT14 reader
 
         /* create and init models and decompressors */
 
@@ -134,21 +134,21 @@ public boolean chunk_sizes() {
     }
 
     @Override
-    public PointDataRecord read(int context) {
+    public PointDataRecord read(MutableInteger context) {
         // get last
 
         PointDataRecordWavepacket last_item = contexts[current_context].last_item;
 
         // check for context switch
 
-        if (current_context != context)
+        if (current_context != context.get())
         {
-            current_context = context; // all other items use context set by POINT14 reader
+            current_context = context.get(); // all other items use context set by POINT14 reader
             if (contexts[current_context].unused)
             {
                 createAndInitModelsAndDecompressors(current_context, last_item);
+                last_item = contexts[current_context].last_item;
             }
-            last_item = contexts[current_context].last_item;
         }
 
         // decompress

src/main/java/com/github/mreutegg/laszip4j/laszip/LASreadItemRaw_BYTE.java

@@ -19,7 +19,7 @@ public LASreadItemRaw_BYTE(int byteCount) {
     }
 
     @Override
-    public PointDataRecordBytes read(int notUsed) {
+    public PointDataRecordBytes read(MutableInteger notUsed) {
 
         PointDataRecordBytes result = new PointDataRecordBytes(byteCount);
         instream.getBytes(result.Bytes, byteCount);