From 52ae4377ddc9676fda5eb8f9ac5d93b0521e8aba Mon Sep 17 00:00:00 2001
From: Matthew Harris <matthew.john.harris@gmail.com>
Date: Wed, 6 Jan 2016 16:28:32 +0100
Subject: Ensure that only the size of sample data chunk is loaded, rather than
 entire remaining buffer. Copes with WAV files that have metadata appended to
 the end after the data RIFF chunk.

---
 src/java/com/jogamp/openal/util/WAVData.java   | 9 ++++++---
 src/java/com/jogamp/openal/util/WAVLoader.java | 6 ++++--
 2 files changed, 10 insertions(+), 5 deletions(-)

(limited to 'src/java')

diff --git a/src/java/com/jogamp/openal/util/WAVData.java b/src/java/com/jogamp/openal/util/WAVData.java
index 94dd002..a69782a 100644
--- a/src/java/com/jogamp/openal/util/WAVData.java
+++ b/src/java/com/jogamp/openal/util/WAVData.java
@@ -89,7 +89,8 @@ public final class WAVData {
      * @param bits
      * @param sampleRate
      * @param byteOrder
-     * @param stream An InputStream for the .WAV stream
+     * @param aIn An InputStream for the .WAV stream
+     * @param size Amount of data to load from buffer (or zero for all available)
      *
      * @return a WAVData object containing the audio data
      *
@@ -98,7 +99,7 @@ public final class WAVData {
      * @throws IOException If the file can no be found or some other IO error
      *                     occurs
      */
-    public static WAVData loadFromStream(InputStream aIn, final int initialCapacity, final int numChannels, final int bits, final int sampleRate, final ByteOrder byteOrder, final boolean loop)
+    public static WAVData loadFromStream(InputStream aIn, final int initialCapacity, final int numChannels, final int bits, final int sampleRate, final ByteOrder byteOrder, final boolean loop, int size)
       throws IOException {
         if( !(aIn instanceof BufferedInputStream) ) {
             aIn = new BufferedInputStream(aIn);
@@ -116,7 +117,9 @@ public final class WAVData {
             format = ALConstants.AL_FORMAT_STEREO16;
         }
         final ByteBuffer buffer = IOUtil.copyStream2ByteBuffer(aIn, initialCapacity);
-        final int size = buffer.limit();
+        if (size==0) {
+            size = buffer.limit();
+        }
 
         // Must byte swap in case endianess mismatch
         if ( bits == 16 && ByteOrder.nativeOrder() != byteOrder ) {
diff --git a/src/java/com/jogamp/openal/util/WAVLoader.java b/src/java/com/jogamp/openal/util/WAVLoader.java
index ef8d12a..48ff62a 100644
--- a/src/java/com/jogamp/openal/util/WAVLoader.java
+++ b/src/java/com/jogamp/openal/util/WAVLoader.java
@@ -123,6 +123,7 @@ public class WAVLoader {
 		    short sChannels = 0, sSampleSizeInBits = 0;
 		    long sampleRate = 0;
 		    long chunkLength = 0;
+            int dataLength = 0;
 
 			while (!foundData) {
 				final int chunkId = (int)bs.readUInt32(true /* bigEndian */);
@@ -150,6 +151,7 @@ public class WAVLoader {
 						throw new ALException("WAV fmt chunks must be before data chunks: "+bs);
 					}
 					foundData = true;
+                    dataLength = Bitstream.uint32LongToInt(chunkLength);
 					break;
 				default:
 					// unrecognized chunk, skips it
@@ -160,8 +162,8 @@ public class WAVLoader {
 			final int channels = sChannels;
 			final int sampleSizeInBits = sSampleSizeInBits;
 			final float fSampleRate = sampleRate;
-			return WAVData.loadFromStream(bs.getSubStream(), riffLenI, channels, sampleSizeInBits,
-					Math.round(fSampleRate), bigEndian ? ByteOrder.BIG_ENDIAN : ByteOrder.LITTLE_ENDIAN, false);
+			return WAVData.loadFromStream(bs.getSubStream(), dataLength, channels, sampleSizeInBits,
+					Math.round(fSampleRate), bigEndian ? ByteOrder.BIG_ENDIAN : ByteOrder.LITTLE_ENDIAN, false, dataLength);
 		} finally {
 			bs.close();
 		}
-- 
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