diff options
Diffstat (limited to 'src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkGAMA.java')
| -rw-r--r-- | src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkGAMA.java | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkGAMA.java b/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkGAMA.java new file mode 100644 index 000000000..184ee9ffa --- /dev/null +++ b/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkGAMA.java @@ -0,0 +1,56 @@ +package jogamp.opengl.util.pngj.chunks;
+
+import jogamp.opengl.util.pngj.ImageInfo;
+import jogamp.opengl.util.pngj.PngHelper;
+import jogamp.opengl.util.pngj.PngjException;
+
+/*
+ */
+public class PngChunkGAMA extends PngChunk {
+ // http://www.w3.org/TR/PNG/#11gAMA
+ private double gamma;
+
+ public PngChunkGAMA(ImageInfo info) {
+ super(ChunkHelper.gAMA, info);
+ }
+
+ @Override
+ public boolean mustGoBeforeIDAT() {
+ return true;
+ }
+
+ @Override
+ public boolean mustGoBeforePLTE() {
+ return true;
+ }
+
+ @Override
+ public ChunkRaw createChunk() {
+ ChunkRaw c = createEmptyChunk(4, true);
+ int g = (int) (gamma * 100000 + 0.5);
+ PngHelper.writeInt4tobytes(g, c.data, 0);
+ return c;
+ }
+
+ @Override
+ public void parseFromChunk(ChunkRaw chunk) {
+ if (chunk.len != 4)
+ throw new PngjException("bad chunk " + chunk);
+ int g = PngHelper.readInt4fromBytes(chunk.data, 0);
+ gamma = ((double) g) / 100000.0;
+ }
+
+ @Override
+ public void cloneDataFromRead(PngChunk other) {
+ gamma = ((PngChunkGAMA) other).gamma;
+ }
+
+ public double getGamma() {
+ return gamma;
+ }
+
+ public void setGamma(double gamma) {
+ this.gamma = gamma;
+ }
+
+}
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