// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (C) 2000 Takashi Iwai <tiwai@suse.de>
 *
 *  Routines for control of EMU WaveTable chip
 */

#include <linux/wait.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <sound/core.h>
#include <sound/emux_synth.h>
#include <linux/init.h>
#include <linux/module.h>
#include "emux_voice.h"

MODULE_AUTHOR("Takashi Iwai");
MODULE_DESCRIPTION("Routines for control of EMU WaveTable chip");
MODULE_LICENSE("GPL");

/*
 * create a new hardware dependent device for Emu8000/Emu10k1
 */
int snd_emux_new(struct snd_emux **remu)
{
        struct snd_emux *emu;

        *remu = NULL;
        emu = kzalloc_obj(*emu);
        if (emu == NULL)
                return -ENOMEM;

        spin_lock_init(&emu->voice_lock);
        mutex_init(&emu->register_mutex);

        emu->client = -1;
#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
        emu->oss_synth = NULL;
#endif
        emu->max_voices = 0;
        emu->use_time = 0;

        timer_setup(&emu->tlist, snd_emux_timer_callback, 0);
        emu->timer_active = 0;

        *remu = emu;
        return 0;
}

EXPORT_SYMBOL(snd_emux_new);

/*
 */
static int sf_sample_new(void *private_data, struct snd_sf_sample *sp,
                                  struct snd_util_memhdr *hdr,
                                  const void __user *buf, long count)
{
        struct snd_emux *emu = private_data;
        return emu->ops.sample_new(emu, sp, hdr, buf, count);
        
}

static int sf_sample_free(void *private_data, struct snd_sf_sample *sp,
                                   struct snd_util_memhdr *hdr)
{
        struct snd_emux *emu = private_data;
        return emu->ops.sample_free(emu, sp, hdr);
        
}

static void sf_sample_reset(void *private_data)
{
        struct snd_emux *emu = private_data;
        emu->ops.sample_reset(emu);
}

int snd_emux_register(struct snd_emux *emu, struct snd_card *card, int index, char *name)
{
        int err;
        struct snd_sf_callback sf_cb;

        if (snd_BUG_ON(!emu->hw || emu->max_voices <= 0))
                return -EINVAL;
        if (snd_BUG_ON(!card || !name))
                return -EINVAL;

        emu->card = card;
        emu->name = kstrdup_const(name, GFP_KERNEL);
        emu->voices = kzalloc_objs(struct snd_emux_voice, emu->max_voices);
        if (emu->name == NULL || emu->voices == NULL)
                return -ENOMEM;

        /* create soundfont list */
        memset(&sf_cb, 0, sizeof(sf_cb));
        sf_cb.private_data = emu;
        sf_cb.sample_new = sf_sample_new;
        sf_cb.sample_free = sf_sample_free;
        if (emu->ops.sample_reset)
                sf_cb.sample_reset = sf_sample_reset;
        emu->sflist = snd_sf_new(&sf_cb, emu->memhdr);
        if (emu->sflist == NULL)
                return -ENOMEM;

        err = snd_emux_init_hwdep(emu);
        if (err < 0)
                return err;

        snd_emux_init_voices(emu);

        snd_emux_init_seq(emu, card, index);
#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
        snd_emux_init_seq_oss(emu);
#endif
        snd_emux_init_virmidi(emu, card);

        snd_emux_proc_init(emu, card, index);
        return 0;
}

EXPORT_SYMBOL(snd_emux_register);

/*
 */
int snd_emux_free(struct snd_emux *emu)
{
        if (! emu)
                return -EINVAL;

        timer_shutdown_sync(&emu->tlist);

        snd_emux_proc_free(emu);
        snd_emux_delete_virmidi(emu);
#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
        snd_emux_detach_seq_oss(emu);
#endif
        snd_emux_detach_seq(emu);
        snd_emux_delete_hwdep(emu);
        snd_sf_free(emu->sflist);
        kfree(emu->voices);
        kfree_const(emu->name);
        kfree(emu);
        return 0;
}

EXPORT_SYMBOL(snd_emux_free);