From 33d179715a45f8171408ae7ba0de8d5a377ae668 Mon Sep 17 00:00:00 2001
From: "Timothy B. Terriberry" <tterribe@xiph.org>
Date: Mon, 14 Dec 2015 18:38:26 -0800
Subject: [PATCH] Fix timestamp check for seek-free seek.
We avoid seeking when the seek target lies within the packets
buffered from the current page.
However, the calculation of the page start time was _adding_ the
first packet's duration to its end time, instead of subtracting
it.
---
src/opusfile.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/opusfile.c b/src/opusfile.c
index cb372e4..1acb420 100644
--- a/src/opusfile.c
+++ b/src/opusfile.c
@@ -2263,7 +2263,7 @@ static int op_pcm_seek_page(OggOpusFile *_of,
generally 1 second or less), we can loop them continuously
without seeking at all.*/
OP_ALWAYS_TRUE(!op_granpos_add(&prev_page_gp,_of->op[0].granulepos,
- op_get_packet_duration(_of->op[0].packet,_of->op[0].bytes)));
+ -op_get_packet_duration(_of->op[0].packet,_of->op[0].bytes)));
if(op_granpos_cmp(prev_page_gp,_target_gp)<=0){
/*Don't call op_decode_clear(), because it will dump our
packets.*/
--
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