mute.c

来自「蓝牙耳机软件源代码」· C语言 代码 · 共 48 行

#include "demohs.h"

#include <audio.h>


static const audio_note mute_beep[] =
{
    AUDIO_TEMPO(80), AUDIO_VOLUME(32), AUDIO_TIMBRE(sine),
    AUDIO_NOTE(G5, QUAVER),
    AUDIO_END
};


static Delay delayMuteBeepPlay(TimerHandle h)
{
    h = h;
    hsState.AudioRingHandle = AudioPlay(mute_beep);
    return MUTE_BEEP_DELAY;
}


/*
    muteRequest

    Toggles the current mute state i.e. if mute was on turns it off and vice versa
*/
void muteRequest(void)
{
    uint16 want = hsState.isMuted ^ 1;
    if(AudioMuteMicrophone(want))
        hsState.isMuted = want;
        
    if (!hsState.isMuted)
    {
        /* Stop playing beeps */
        (void) AudioStop(hsState.AudioRingHandle);
        (void) TimerCancelCallback(delayMuteBeepPlay);
    }
    else if (hsState.scoConnected)
    {
        /* 
            If we have a SCO connected and the mic is muted play beeps 
            until it is unmuted. Reuse the ring handle for now.
        */
        (void) TimerAdd(D_mSEC(MUTE_BEEP_DELAY), delayMuteBeepPlay);        
    }    
}