From ba8e579e9b8126a694d1125e001acddbeb494299 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Fri, 1 Jul 2016 21:22:21 +0200
Subject: [PATCH] pcm/Volume: use 0x69 to generate DSD silence
---
src/pcm/Volume.cxx | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/src/pcm/Volume.cxx b/src/pcm/Volume.cxx
index b12d8fd41..37f90c582 100644
--- a/src/pcm/Volume.cxx
+++ b/src/pcm/Volume.cxx
@@ -134,9 +134,11 @@ PcmVolume::Apply(ConstBuffer<void> src)
if (volume == 0) {
/* optimized special case: 0% volume = memset(0) */
- /* TODO: is this valid for all sample formats? What
- about floating point? */
- memset(data, 0, src.size);
+ uint8_t pattern = 0;
+ if (format == SampleFormat::DSD)
+ pattern = 0x69;
+
+ memset(data, pattern, src.size);
return { data, src.size };
}