void IZMachineIO.PlaySoundSample(ushort number, SoundAction action, byte volume, byte repeats,
SoundFinishedCallback callback)
{
switch (action)
{
case SoundAction.Prepare:
Glk.glk_sound_load_hint(number, true);
break;
case SoundAction.FinishWith:
Glk.glk_sound_load_hint(number, false);
break;
case SoundAction.Start:
if (soundChannel.IsNull)
{
soundChannel = Glk.glk_schannel_create(0);
}
if (!soundChannel.IsNull)
{
volume = Math.Min(volume, (byte)8);
Glk.glk_schannel_set_volume(soundChannel, (uint)(volume << 13));
soundCallback = callback;
Glk.glk_schannel_play_ext(soundChannel, number, repeats, 1);
}
break;
case SoundAction.Stop:
if (!soundChannel.IsNull)
{
Glk.glk_schannel_stop(soundChannel);
soundChannel = schanid_t.Null;
soundCallback = null;
}
break;
}
}
public static extern void glk_schannel_set_volume(schanid_t chan, uint vol);
public static extern void glk_schannel_stop(schanid_t chan);
public static extern uint glk_schannel_play_ext(schanid_t chan, uint snd, uint repeats,
uint notify);
public static extern uint glk_schannel_play(schanid_t chan, uint snd);
public static extern uint glk_schannel_get_rock(schanid_t chan);
public static extern schanid_t glk_schannel_iterate(schanid_t chan, out uint rockptr);
public static extern void glk_schannel_destroy(schanid_t chan);
