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pcm: add SND_CTL_EINTR open mode

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Add possibility to return -EINTR instead waiting for the event. The
applications may want to handle -EINTR condition themselves.

BugLink: https://github.com/alsa-project/alsa-lib/issues/228
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2023-05-03 11:48:35 +02:00
parent d6d5982d3a
commit 507d906abb
8 changed files with 13 additions and 8 deletions
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3
include/control.h
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@ -356,6 +356,9 @@ typedef enum _snd_ctl_type {
/** Read only (flag for open mode) \hideinitializer */
#define SND_CTL_READONLY 0x0004
/** Return EINTR instead blocking (flag for open mode) \hideinitializer */
#define SND_CTL_EINTR 0x0080
/** CTL handle */
typedef struct _snd_ctl snd_ctl_t;