snd_pcm_mute_event_t
Information about the mute event
Synopsis:
typedef struct snd_pcm_mute_event
{
uint8_t mute;
uint8_t reason;
#define SND_PCM_MUTE_EVENT_SAME_PRIORITY 1
#define SND_PCM_MUTE_EVENT_HIGHER_PRIORITY 2
uint8_t zero[2];
} snd_pcm_mute_event_t;
Description:
The snd_pcm_mute_event structure is delivered whenever a channel is ducked to or unducked from zero and preemption isn't enabled. You can use this structure to get information to determine if you were ducked because a higher or same priority audio stream played.
The members include:
- mute
- The event indicates whether the channel was muted. A value of
1specifies that the channel was muted; otherwise the channel was unmuted. - reason
- A value of SND_PCM_MUTE_EVENT_SAME_PRIORITY specifies the audio type that caused the channel to mute is the same priority. A value of SND_PCM_MUTE_EVENT_HIGHER_PRIORITY specifies that the channel was ducked because the audio type was a higher priority.
Classification:
QNX Neutrino
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