Merge pull request #626 from marcobitplane/master

Get decompressed chunks
jamesmudd · Sep 24, 2024 · ac7b13f · ac7b13f
2 parents 5ffd065 + faf0d3a
commit ac7b13f
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diff --git a/jhdf/src/main/java/io/jhdf/api/dataset/ChunkedDataset.java b/jhdf/src/main/java/io/jhdf/api/dataset/ChunkedDataset.java
@@ -37,4 +37,13 @@ public interface ChunkedDataset extends Dataset {
 	 */
 	ByteBuffer getRawChunkBuffer(int[] chunkOffset);
 
+	/**
+	 * Gets the decompressed byte array for the specified chunk.
+	 *
+	 * @param chunkOffset the offset of the required chunk
+	 * @return the decompressed byte array for this chunk
+	 * @throws HdfException If the chunk offset is not valid for this dataset
+	 */
+	byte[] getDecompressedChunk(int[] chunkOffset);
+
 }
diff --git a/jhdf/src/main/java/io/jhdf/dataset/chunked/ChunkedDatasetBase.java b/jhdf/src/main/java/io/jhdf/dataset/chunked/ChunkedDatasetBase.java
@@ -291,6 +291,16 @@ public ByteBuffer getRawChunkBuffer(int[] chunkOffset) {
 		return getDataBuffer(chunk);
 	}
 
+	@Override
+	public byte[] getDecompressedChunk(int[] chunkOffset) {
+		final Chunk chunk = getChunk(new ChunkOffset(chunkOffset));
+		if (chunk == null) {
+			throw new HdfException("No chunk with offset " + Arrays.toString(chunkOffset) +
+				" in dataset: " + getPath());
+		}
+		return decompressChunk(chunk);
+	}
+
 	private Collection<Chunk> getAllChunks() {
 		return getChunkLookup().values();
 	}