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From: Pavel Hofman <pavel.hofman@ivitera.com>
To: alsa-devel@alsa-project.org
Cc: Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.de>,
	Pavel Hofman <pavel.hofman@ivitera.com>
Subject: [PATCH 1/3] ALSA:aloop: add DSD formats
Date: Tue, 16 Apr 2024 14:17:24 +0200	[thread overview]
Message-ID: <20240416121726.628679-2-pavel.hofman@ivitera.com> (raw)
In-Reply-To: <20240416121726.628679-1-pavel.hofman@ivitera.com>

The snd-aloop loopback driver does not modify or access the actual samples
in any way, defines no volume or mute controls, it's strictly bitperfect.
Therefore DSD formats can be supported without any modification.

Add all DSD formats to the list of supported formats.

Signed-off-by: Pavel Hofman <pavel.hofman@ivitera.com>
---
 sound/drivers/aloop.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c
index 892c4e29c0a3..44ee2a4bc2b0 100644
--- a/sound/drivers/aloop.c
+++ b/sound/drivers/aloop.c
@@ -927,7 +927,10 @@ static const struct snd_pcm_hardware loopback_pcm_hardware =
 			 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |
 			 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
 			 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE |
-			 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE),
+			 SNDRV_PCM_FMTBIT_FLOAT_LE | SNDRV_PCM_FMTBIT_FLOAT_BE |
+			 SNDRV_PCM_FMTBIT_DSD_U8 |
+			 SNDRV_PCM_FMTBIT_DSD_U16_LE | SNDRV_PCM_FMTBIT_DSD_U16_BE |
+			 SNDRV_PCM_FMTBIT_DSD_U32_LE | SNDRV_PCM_FMTBIT_DSD_U32_BE),
 	.rates =	SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_192000,
 	.rate_min =		8000,
 	.rate_max =		192000,
-- 
2.25.1


  reply	other threads:[~2024-04-16 12:18 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-16 12:17 [PATCH 0/3] adding 705.6/768kHz rates; DSD and 768kHz in aloop Pavel Hofman
2024-04-16 12:17 ` Pavel Hofman [this message]
2024-04-16 12:17 ` [PATCH 2/3] ALSA:pcm: add support for 705.6kHz and 768kHz sample rates Pavel Hofman
2024-04-16 12:17 ` [PATCH 3/3] ALSA:aloop: add support for up to 768kHz sample rate Pavel Hofman
2024-04-16 13:49 ` [PATCH 0/3] adding 705.6/768kHz rates; DSD and 768kHz in aloop Jaroslav Kysela
2024-04-18  7:31 ` Takashi Iwai

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