$NetBSD: patch-ad,v 1.1 2009/01/21 15:19:27 drochner Exp $

--- libaudiofile/wave.c.orig	2004-03-06 07:39:23.000000000 +0100
+++ libaudiofile/wave.c
@@ -220,7 +220,8 @@ static status ParseFormat (AFfilehandle 
 			extraByteCount = LENDIAN_TO_HOST_INT16(extraByteCount);
 
 			af_fread(&samplesPerBlock, 1, 2, fp);
-			samplesPerBlock = LENDIAN_TO_HOST_INT16(samplesPerBlock);
+			samplesPerBlock = LENDIAN_TO_HOST_INT16(samplesPerBlock)
+				* track->f.channelCount;
 
 			af_fread(&numCoefficients, 1, 2, fp);
 			numCoefficients = LENDIAN_TO_HOST_INT16(numCoefficients);
@@ -281,6 +282,12 @@ static status ParseFormat (AFfilehandle 
 			u_int16_t	bitsPerSample, extraByteCount,
 					samplesPerBlock;
 
+			if (track->f.channelCount != 1) {
+				_af_error(AF_BAD_CHANNELS,
+					"WAVE file with IMA compression: "
+					"can only handle 1 channel");
+			}
+
 			af_fread(&bitsPerSample, 1, 2, fp);
 			bitsPerSample = LENDIAN_TO_HOST_INT16(bitsPerSample);