X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=wav.c;h=c03c21dc4db47ea51b44ab352570a5e7e0bc08cf;hb=refs%2Ftags%2Fv0.3.3;hp=4933afd49443c006e4fd3d219d51cfd75856bf71;hpb=7534eaf91ca37100a7559c05add941192220a7f1;p=paraslash.git

diff --git a/wav.c b/wav.c
index 4933afd4..c03c21dc 100644
--- a/wav.c
+++ b/wav.c
@@ -48,6 +48,7 @@ static void make_wav_header(unsigned int channels, unsigned int samplerate,
 	int bytespersec = channels * samplerate * BITS / 8;
 	int align = channels * BITS / 8;
 
+	assert(channels);
 	PARA_DEBUG_LOG("writing wave header: %d channels, %d KHz\n", channels, samplerate);
 	memset(headbuf, 0, WAV_HEADER_LEN);
 	memcpy(headbuf, "RIFF", 4);
@@ -71,6 +72,8 @@ static ssize_t wav_convert(char *inbuf, size_t len, struct filter_node *fn)
 	int *bof = fn->private_data;
 
 	if (*bof) {
+		if (!len)
+			return 0;
 		make_wav_header(fn->fc->channels, fn->fc->samplerate, fn);
 		fn->loaded = WAV_HEADER_LEN;
 		*bof = 0;