emu10k1_synth.rar_synth

/* * Routines for control of EMU10K1 WaveTable synth */ #include "emu10k1_synth_local.h" #include <linux/init.h> #include <linux/module.h> MODULE_AUTHOR("Takashi Iwai"); MODULE_DESCRIPTION("Routines for control of EMU10K1 WaveTable synth"); MODULE_LICENSE("GPL"); /* * create a new hardware dependent device for Emu10k1 */ static int snd_emu10k1_synth_new_device(struct snd_seq_device *dev) { struct snd_emux *emux; struct snd_emu10k1 *hw; struct snd_emu10k1_synth_arg *arg; unsigned long flags; arg = SNDRV_SEQ_DEVICE_ARGPTR(dev); if (arg == NULL) return -EINVAL; if (arg->seq_ports <= 0) return 0; /* nothing */ if (arg->max_voices < 1) arg->max_voices = 1; else if (arg->max_voices > 64) arg->max_voices = 64; if (snd_emux_new(&emux) < 0) return -ENOMEM; snd_emu10k1_ops_setup(emux); hw = arg->hwptr; emux->hw = hw; emux->max_voices = arg->max_voices; emux->num_ports = arg->seq_ports; emux->pitch_shift = -501; emux->memhdr = hw->memhdr; /* maximum two ports */ emux->midi_ports = arg->seq_ports < 2 ? arg->seq_ports : 2; /* audigy has two external midis */ emux->midi_devidx = hw->audigy ? 2 : 1; emux->linear_panning = 0; emux->hwdep_idx = 2; /* FIXED */ if (snd_emux_register(emux, dev->card, arg->index, "Emu10k1") < 0) { snd_emux_free(emux); return -ENOMEM; } spin_lock_irqsave(&hw->voice_lock, flags); hw->synth = emux; hw->get_synth_voice = snd_emu10k1_synth_get_voice; spin_unlock_irqrestore(&hw->voice_lock, flags); dev->driver_data = emux; return 0; } static int snd_emu10k1_synth_delete_device(struct snd_seq_device *dev) { struct snd_emux *emux; struct snd_emu10k1 *hw; unsigned long flags; if (dev->driver_data == NULL) return 0; /* not registered actually */ emux = dev->driver_data; hw = emux->hw; spin_lock_irqsave(&hw->voice_lock, flags); hw->synth = NULL; hw->get_synth_voice = NULL; spin_unlock_irqrestore(&hw->voice_lock, flags); snd_emux_free(emux); return 0; } /* * INIT part */ static int __init alsa_emu10k1_synth_init(void) { static struct snd_seq_dev_ops ops = { snd_emu10k1_synth_new_device, snd_emu10k1_synth_delete_device, }; return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH, &ops, sizeof(struct snd_emu10k1_synth_arg)); } static void __exit alsa_emu10k1_synth_exit(void) { snd_seq_device_unregister_driver(SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH); } module_init(alsa_emu10k1_synth_init) module_exit(alsa_emu10k1_synth_exit)