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[ALSA] Control API - TLV implementation for additional information like dB scale

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This patch implements a TLV mechanism to transfer an additional information
like dB scale to the user space. The types might be extended in future.
Acked-by: Takashi Iwai <tiwai@suse.de>

Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Jaroslav Kysela
2006-06-01 18:34:01 +02:00
parent 3eeab61aa3
commit 42750b04c5
5 changed files with 96 additions and 3 deletions
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2
include/sound/control.h
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@@ -42,6 +42,7 @@ struct snd_kcontrol_new {
snd_kcontrol_info_t *info;
snd_kcontrol_get_t *get;
snd_kcontrol_put_t *put;
unsigned int *tlv;
unsigned long private_value;
};
@@ -58,6 +59,7 @@ struct snd_kcontrol {
snd_kcontrol_info_t *info;
snd_kcontrol_get_t *get;
snd_kcontrol_put_t *put;
unsigned int *tlv;
unsigned long private_value;
void *private_data;
void (*private_free)(struct snd_kcontrol *kcontrol);