static char *get_mixer_device(void){ char *name; if (oss_cfg.use_alt_mixer_device && oss_cfg.alt_mixer_device) name = g_strdup(oss_cfg.alt_mixer_device); else if (oss_cfg.mixer_device > 0) name = g_strdup_printf("%s%d", DEV_MIXER, oss_cfg.mixer_device); else name = g_strdup(DEV_MIXER); return name;}voidoss_get_volume(int *l, int *r){ int fd, v, devs; long cmd; gchar *devname; devname = get_mixer_device(); fd = open(devname, O_RDONLY); g_free(devname); /* * We dont show any errors if this fails, as this is called * rather often */ if (fd != -1) { ioctl(fd, SOUND_MIXER_READ_DEVMASK, &devs); if ((devs & SOUND_MASK_PCM) && (oss_cfg.use_master == 0)) cmd = SOUND_MIXER_READ_PCM; else if ((devs & SOUND_MASK_VOLUME) && (oss_cfg.use_master == 1)) cmd = SOUND_MIXER_READ_VOLUME; else { close(fd); return; } ioctl(fd, cmd, &v); *r = (v & 0xFF00) >> 8; *l = (v & 0x00FF); close(fd); }}