From 052f3a683676c4aee671b2c8d81ab4c8cba35ec1 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Fri, 6 Dec 2019 23:13:20 +0100
Subject: Speed up seeking in mp3s

---
 libs/ardour/mp3fileimportable.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'libs')

diff --git a/libs/ardour/mp3fileimportable.cc b/libs/ardour/mp3fileimportable.cc
index 202ad8493c..99fc0a6384 100644
--- a/libs/ardour/mp3fileimportable.cc
+++ b/libs/ardour/mp3fileimportable.cc
@@ -158,7 +158,12 @@ Mp3FileImportableSource::seek (samplepos_t pos)
 	}
 
 	while (_read_position + _n_frames <= pos) {
-		if (!decode_mp3 ()) {
+		/* skip ahead, until the frame before the target,
+		 * then start decoding. This provides sufficient
+		 * context to prevent audible hiccups, while still
+		 * providing fast and accurate seeking.
+		 */
+		if (!decode_mp3 (_read_position + 3 * _n_frames <= pos)) {
 			break;
 		}
 		_read_position += _n_frames;
-- 
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