From: Andre Noll <maan@systemlinux.org>
Date: Sat, 19 Sep 2009 08:08:59 +0000 (+0200)
Subject: vss: Honor header chunk when computing FEC group start.
X-Git-Tag: v0.3.5~1^2~7
X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=commitdiff_plain;h=f21270523b4500797f7976906998128f5ff5da72

vss: Honor header chunk when computing FEC group start.

The first chunk of an ogg vorbis file is the audio file header
which should not be included in the calculation of the FEC
group timing.
---

diff --git a/vss.c b/vss.c
index babcd24c..aae601d1 100644
--- a/vss.c
+++ b/vss.c
@@ -354,7 +354,12 @@ static int setup_next_fec_group(struct fec_client *fc, struct vss_task *vsst)
 		g->num_header_slices, data_slices
 	);
 	/* set group start */
-	tv_scale(g->first_chunk - fc->first_stream_chunk, chunk_tv, &tmp);
+	if (g->num != 0 && vsst->header_len != 0 && fc->first_stream_chunk == 0)
+		/* chunk #0 is the audio file header */
+		tv_scale(g->first_chunk - 1, chunk_tv, &tmp);
+	else
+		tv_scale(g->first_chunk - fc->first_stream_chunk,
+			chunk_tv, &tmp);
 	tv_add(&fc->stream_start, &tmp, &g->start);
 	return 1;
 }