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ALSA: pcm: Fix the silence data for DSD formats 

Right now we set 0 as the silence data for DSD_U8 and DSD_U16 formats,
but this is actually wrong.  0 is rather the most negative value.
Alternatively, we may take the repeating 0x69 pattern like ffmpeg
deploys.

Reference: https://ffmpeg.org/pipermail/ffmpeg-cvslog/2014-April/076427.html
Suggested-by: Alexander E. Patrakov <patrakov@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2014-08-22 11:18:48 +02:00
parent ee3043b2d7
commit 94a988a8ab
1 changed files with 2 additions and 2 deletions
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4
sound/core/pcm_misc.c
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@ -142,11 +142,11 @@ static struct pcm_format_data pcm_formats[(INT)SNDRV_PCM_FORMAT_LAST+1] = {
},
[SNDRV_PCM_FORMAT_DSD_U8] = {
.width = 8, .phys = 8, .le = 1, .signd = 0,
.silence = {},
.silence = { 0x69 },
},
[SNDRV_PCM_FORMAT_DSD_U16_LE] = {
.width = 16, .phys = 16, .le = 1, .signd = 0,
.silence = {},
.silence = { 0x69, 0x69 },
},
/* FIXME: the following three formats are not defined properly yet */
[SNDRV_PCM_FORMAT_MPEG] = {