diff options
Diffstat (limited to 'src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkIHDR.java')
| -rw-r--r-- | src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkIHDR.java | 41 |
1 files changed, 26 insertions, 15 deletions
diff --git a/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkIHDR.java b/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkIHDR.java index fcb4150ff..94bfedd38 100644 --- a/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkIHDR.java +++ b/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkIHDR.java @@ -3,14 +3,20 @@ package jogamp.opengl.util.pngj.chunks; import java.io.ByteArrayInputStream;
import jogamp.opengl.util.pngj.ImageInfo;
-import jogamp.opengl.util.pngj.PngHelper;
+import jogamp.opengl.util.pngj.PngHelperInternal;
import jogamp.opengl.util.pngj.PngjException;
/**
- * this is a special chunk!
+ * IHDR chunk.
+ * <p>
+ * see http://www.w3.org/TR/PNG/#11IHDR
+ * <p>
+ * This is a special critical Chunk.
*/
-public class PngChunkIHDR extends PngChunk {
+public class PngChunkIHDR extends PngChunkSingle {
+ public final static String ID = ChunkHelper.IHDR;
+
private int cols;
private int rows;
private int bitspc;
@@ -22,16 +28,21 @@ public class PngChunkIHDR extends PngChunk { // http://www.w3.org/TR/PNG/#11IHDR
//
public PngChunkIHDR(ImageInfo info) {
- super(ChunkHelper.IHDR, info);
+ super(ID, info);
+ }
+
+ @Override
+ public ChunkOrderingConstraint getOrderingConstraint() {
+ return ChunkOrderingConstraint.NA;
}
@Override
- public ChunkRaw createChunk() {
+ public ChunkRaw createRawChunk() {
ChunkRaw c = new ChunkRaw(13, ChunkHelper.b_IHDR, true);
int offset = 0;
- PngHelper.writeInt4tobytes(cols, c.data, offset);
+ PngHelperInternal.writeInt4tobytes(cols, c.data, offset);
offset += 4;
- PngHelper.writeInt4tobytes(rows, c.data, offset);
+ PngHelperInternal.writeInt4tobytes(rows, c.data, offset);
offset += 4;
c.data[offset++] = (byte) bitspc;
c.data[offset++] = (byte) colormodel;
@@ -42,18 +53,18 @@ public class PngChunkIHDR extends PngChunk { }
@Override
- public void parseFromChunk(ChunkRaw c) {
+ public void parseFromRaw(ChunkRaw c) {
if (c.len != 13)
throw new PngjException("Bad IDHR len " + c.len);
ByteArrayInputStream st = c.getAsByteStream();
- cols = PngHelper.readInt4(st);
- rows = PngHelper.readInt4(st);
+ cols = PngHelperInternal.readInt4(st);
+ rows = PngHelperInternal.readInt4(st);
// bit depth: number of bits per channel
- bitspc = PngHelper.readByte(st);
- colormodel = PngHelper.readByte(st);
- compmeth = PngHelper.readByte(st);
- filmeth = PngHelper.readByte(st);
- interlaced = PngHelper.readByte(st);
+ bitspc = PngHelperInternal.readByte(st);
+ colormodel = PngHelperInternal.readByte(st);
+ compmeth = PngHelperInternal.readByte(st);
+ filmeth = PngHelperInternal.readByte(st);
+ interlaced = PngHelperInternal.readByte(st);
}
@Override
|