source: titan/titan/mute.h

#ifndef MUTE_H
#define MUTE_H

//screen and node are needed if funktion is called from rc handle
//flag 1 = no blit
//flag 2 = no framebuffer lock
//flag 3 = no framebuffer lock and no blit
void screenmute(struct skin* screen, struct skin* node, int flag)
{
        struct skin* framebuffer = getscreen("framebuffer");
        struct skin* mute = getscreen("mute");

#ifdef MIPSEL
        if(getconfigint("ForwardVolume", NULL) == 1)
        {
                forwardKey(getrcconfigint("rcmute", NULL));
                return;
        }
#endif
        
        if(getconfig("stepmute", NULL) == NULL)
                addconfig("stepmute", "0");
                
        if(status.mute == 0 && atoi(getconfig("stepmute", NULL)) == 1)
                setmute(2);
        else if(status.mute == 0 || status.mute == 2)
        {
                m_lock(&status.vfdmutex, 3);
                if(status.mute == 2)
                        setvol(getconfigint("vol", NULL));
                setmute(1);
#ifndef MIPSEL
//#ifdef SH4
                system("amixer -c 1 set HDMI mute &");
                system("amixer -c 1 set Analog mute &");
                system("amixer -c 1 set SPDIF mute &");
                audiostop(status.aktservice->audiodev);
#endif
                setnodeattr(mute, framebuffer, 0);
                if(status.drawallwaysbg[0] != NULL)
                {
                        free(status.drawallwaysbg[0]);
                        status.drawallwaysbg[0] = NULL;
                }
                status.drawallwaysbg[0] = savescreen(mute);
                if(flag == 2 || flag == 3)
                        drawscreen(mute, 0, 2);
                else
                        drawscreen(mute, 0, 0);
                status.drawallways[0] = mute;
                m_unlock(&status.vfdmutex, 3);
        }
        else
        {
#ifndef MIPSEL
//#ifdef SH4
                audioplay(status.aktservice->audiodev);
                system("amixer -c 1 set HDMI unmute &");
                system("amixer -c 1 set Analog unmute &");
                system("amixer -c 1 set SPDIF unmute &");
#endif
                m_lock(&status.vfdmutex, 3);
                setmute(0);
                if(flag == 2 || flag == 3)
                        clearscreennolock(mute);
                else
                        clearscreen(mute);
                if(status.drawallwaysbg[0] != NULL)
                {
                        restorescreen(status.drawallwaysbg[0], mute);
                        status.drawallwaysbg[0] = NULL;
                }
                status.drawallways[0] = NULL;
                if(flag == 0 || flag == 2)
                        blitfb(0);
                m_unlock(&status.vfdmutex, 3);
        }
}

#endif