oysteikt/mpd
0
0
Fork 0
Code Issues Pull Requests Releases Activity

pcm/Dsd2Pcm: use SampleTraits<SampleFormat::DSD>::SILENCE

Browse Source
This commit is contained in:
Max Kellermann 2023-03-06 18:30:01 +01:00
parent 302a571367
commit 7a1b996da9
2 changed files with 7 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/pcm/Dsd2Pcm.cxx
View File

@ -172,14 +172,9 @@ void
Dsd2Pcm::Reset() noexcept Dsd2Pcm::Reset() noexcept
{ {
/* my favorite silence pattern */ /* my favorite silence pattern */
fifo.fill(0x69); fifo.fill(SampleTraits<SampleFormat::DSD>::SILENCE);
fifopos = 0; fifopos = 0;
/* 0x69 = 01101001
* This pattern "on repeat" makes a low energy 352.8 kHz tone
* and a high energy 1.0584 MHz tone which should be filtered
* out completely by any playback system --> silence
*/
} }
inline void inline void

10
src/pcm/Traits.hxx
View File

@ -1,8 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-or-later // SPDX-License-Identifier: GPL-2.0-or-later
// Copyright The Music Player Daemon Project // Copyright The Music Player Daemon Project
#ifndef MPD_PCM_TRAITS_HXX #pragma once
#define MPD_PCM_TRAITS_HXX
#include "SampleFormat.hxx" #include "SampleFormat.hxx"
@ -150,7 +149,10 @@ struct SampleTraits<SampleFormat::DSD> {
static constexpr size_t SAMPLE_SIZE = sizeof(value_type); static constexpr size_t SAMPLE_SIZE = sizeof(value_type);
/* 0x69 = 01101001
* This pattern "on repeat" makes a low energy 352.8 kHz tone
* and a high energy 1.0584 MHz tone which should be filtered
* out completely by any playback system --> silence
*/
static constexpr value_type SILENCE = 0x69; static constexpr value_type SILENCE = 0x69;
}; };
#endif