Example #1
0
/*
 * ioctl
 */
static int
snd_emux_hwdep_ioctl(struct snd_hwdep * hw, struct file *file,
		     unsigned int cmd, unsigned long arg)
{
	struct snd_emux *emu = hw->private_data;

	switch (cmd) {
	case SNDRV_EMUX_IOCTL_VERSION:
		return put_user(SNDRV_EMUX_VERSION, (unsigned int __user *)arg);
	case SNDRV_EMUX_IOCTL_LOAD_PATCH:
		return snd_emux_hwdep_load_patch(emu, (void __user *)arg);
	case SNDRV_EMUX_IOCTL_RESET_SAMPLES:
		snd_soundfont_remove_samples(emu->sflist);
		break;
	case SNDRV_EMUX_IOCTL_REMOVE_LAST_SAMPLES:
		snd_soundfont_remove_unlocked(emu->sflist);
		break;
	case SNDRV_EMUX_IOCTL_MEM_AVAIL:
		if (emu->memhdr) {
			int size = snd_util_mem_avail(emu->memhdr);
			return put_user(size, (unsigned int __user *)arg);
		}
		break;
	case SNDRV_EMUX_IOCTL_MISC_MODE:
		return snd_emux_hwdep_misc_mode(emu, (void __user *)arg);
	}

	return 0;
}
/*
 * OSS/AWE driver specific h/w controls
 */
static void
emuspec_control(struct snd_emux *emu, struct snd_emux_port *port, int cmd,
		unsigned char *event, int atomic, int hop)
{
	int voice;
	unsigned short p1;
	short p2;
	int i;
	struct snd_midi_channel *chan;

	voice = event[3];
	if (voice < 0 || voice >= port->chset.max_channels)
		chan = NULL;
	else
		chan = &port->chset.channels[voice];

	p1 = *(unsigned short *) &event[4];
	p2 = *(short *) &event[6];

	switch (cmd) {
#if 0 /* don't do this atomically */
	case _EMUX_OSS_REMOVE_LAST_SAMPLES:
		snd_soundfont_remove_unlocked(emu->sflist);
		break;
#endif
	case _EMUX_OSS_SEND_EFFECT:
		if (chan)
			snd_emux_send_effect_oss(port, chan, p1, p2);
		break;
		
	case _EMUX_OSS_TERMINATE_ALL:
		snd_emux_terminate_all(emu);
		break;

	case _EMUX_OSS_TERMINATE_CHANNEL:
		/*snd_emux_mute_channel(emu, chan);*/
		break;
	case _EMUX_OSS_RESET_CHANNEL:
		/*snd_emux_channel_init(chset, chan);*/
		break;

	case _EMUX_OSS_RELEASE_ALL:
		fake_event(emu, port, voice, MIDI_CTL_ALL_NOTES_OFF, 0, atomic, hop);
		break;
	case _EMUX_OSS_NOTEOFF_ALL:
		fake_event(emu, port, voice, MIDI_CTL_ALL_SOUNDS_OFF, 0, atomic, hop);
		break;

	case _EMUX_OSS_INITIAL_VOLUME:
		if (p2) {
			port->volume_atten = (short)p1;
			snd_emux_update_port(port, SNDRV_EMUX_UPDATE_VOLUME);
		}
		break;

	case _EMUX_OSS_CHN_PRESSURE:
		if (chan) {
			chan->midi_pressure = p1;
			snd_emux_update_channel(port, chan, SNDRV_EMUX_UPDATE_FMMOD|SNDRV_EMUX_UPDATE_FM2FRQ2);
		}
		break;

	case _EMUX_OSS_CHANNEL_MODE:
		reset_port_mode(port, p1);
		snd_emux_reset_port(port);
		break;

	case _EMUX_OSS_DRUM_CHANNELS:
		port->drum_flags = *(unsigned int*)&event[4];
		for (i = 0; i < port->chset.max_channels; i++) {
			chan = &port->chset.channels[i];
			chan->drum_channel = ((port->drum_flags >> i) & 1) ? 1 : 0;
		}
		break;

	case _EMUX_OSS_MISC_MODE:
		if (p1 < EMUX_MD_END)
			port->ctrls[p1] = p2;
		break;
	case _EMUX_OSS_DEBUG_MODE:
		break;

	default:
		if (emu->ops.oss_ioctl)
			emu->ops.oss_ioctl(emu, cmd, p1, p2);
		break;
	}
}