2004-11-30 Thomas Fitzsimmons <fitzsim@redhat.com>

[pf3gnuchains/gcc-fork.git] / libjava / java / awt / image / Raster.java

diff --git a/libjava/java/awt/image/Raster.java b/libjava/java/awt/image/Raster.java
index 4fd194e..0fad4ba 100644 (file)
--- a/libjava/java/awt/image/Raster.java
+++ b/libjava/java/awt/image/Raster.java
@@ -128,8 +128,8 @@ public class Raster
                                                  int w, int h, int bands,
                                                  Point location)
   {
-    // FIXME: Implement;
-    throw new UnsupportedOperationException("not implemented yet");
+    SampleModel sm = new BandedSampleModel(dataType, w, h, bands);
+    return createWritableRaster(sm, location);
   }
 
   public static WritableRaster createBandedRaster(int dataType,
@@ -139,8 +139,9 @@ public class Raster
                                                  int[] bandOffsets,
                                                  Point location)
   {
-    // FIXME: Implement;
-    throw new UnsupportedOperationException("not implemented yet");
+    SampleModel sm = new BandedSampleModel(dataType, w, h, scanlineStride,
+                                          bankIndices, bandOffsets);
+    return createWritableRaster(sm, location);
   }
   
   public static WritableRaster createPackedRaster(int dataType,
@@ -154,6 +155,35 @@ public class Raster
     return createWritableRaster(sm, location);
   }
 
+  public static WritableRaster createPackedRaster(int dataType,
+                                                 int w, int h,
+                                                 int bands, int bitsPerBand,
+                                                 Point location)
+  {
+    if (bands <= 0 || (bands * bitsPerBand > getTypeBits(dataType)))
+      throw new IllegalArgumentException();
+
+    SampleModel sm;
+
+    if (bands == 1)
+       sm = new MultiPixelPackedSampleModel(dataType, w, h, bitsPerBand);
+    else
+      {
+       int[] bandMasks = new int[bands];
+       int mask = 0x1;
+       for (int bits = bitsPerBand; --bits != 0;)
+         mask = (mask << 1) | 0x1;
+       for (int i = 0; i < bands; i++)
+         {
+           bandMasks[i] = mask;
+           mask <<= bitsPerBand;
+         }
+         
+       sm = new SinglePixelPackedSampleModel(dataType, w, h, bandMasks);
+      }
+    return createWritableRaster(sm, location);
+  }
+
   public static WritableRaster
   createInterleavedRaster(DataBuffer dataBuffer, int w, int h,
                          int scanlineStride, int pixelStride,
@@ -175,8 +205,10 @@ public class Raster
                                    int[] bandOffsets,
                                    Point location)
   {
-    // FIXME: Implement;
-    throw new UnsupportedOperationException("not implemented yet");
+    SampleModel sm = new BandedSampleModel(dataBuffer.getDataType(),
+                                          w, h, scanlineStride,
+                                          bankIndices, bandOffsets);
+    return createWritableRaster(sm, dataBuffer, location);
   }
   
   public static WritableRaster
@@ -184,7 +216,8 @@ public class Raster
                     int w, int h,
                     int scanlineStride,
                     int[] bandMasks,
-                    Point location) {
+                    Point location)
+ {
     SampleModel sm =
       new SinglePixelPackedSampleModel(dataBuffer.getDataType(),
                                       w, h,
@@ -192,6 +225,19 @@ public class Raster
                                       bandMasks);
     return createWritableRaster(sm, dataBuffer, location);
   }
+  
+  public static WritableRaster
+  createPackedRaster(DataBuffer dataBuffer,
+                    int w, int h,
+                    int bitsPerPixel,
+                    Point location)
+  {
+    SampleModel sm =
+      new MultiPixelPackedSampleModel(dataBuffer.getDataType(),
+                                      w, h,
+                                      bitsPerPixel);
+    return createWritableRaster(sm, dataBuffer, location);
+  }
     
   public static Raster createRaster(SampleModel sm, DataBuffer db,
                                    Point location)
@@ -329,6 +375,11 @@ public class Raster
     return height;
   }
 
+  public final int getNumBands()
+  {
+    return numBands;
+  }
+    
   public final int getNumDataElements()
   {
     return numDataElements;
@@ -472,5 +523,24 @@ public class Raster
     
     return result.toString();
   }
-  
+
+  // Map from datatype to bits
+  private static int getTypeBits(int dataType)
+  {
+    switch (dataType)
+      {
+      case DataBuffer.TYPE_BYTE:
+       return 8;
+      case DataBuffer.TYPE_USHORT:
+      case DataBuffer.TYPE_SHORT:
+       return 16;
+      case DataBuffer.TYPE_INT:
+      case DataBuffer.TYPE_FLOAT:
+       return 32;
+      case DataBuffer.TYPE_DOUBLE:
+       return 64;
+      default:
+       return 0;
+      }
+  }
 }