/*

 *  Sequencer Interface - main file

 *  Copyright (c) 2000 by Jaroslav Kysela <perex@perex.cz>

 *                        Abramo Bagnara <abramo@alsa-project.org>

 *

 *

 *   This library is free software; you can redistribute it and/or modify

 *   it under the terms of the GNU Lesser General Public License as

 *   published by the Free Software Foundation; either version 2.1 of

 *   the License, or (at your option) any later version.

 *

 *   This program is distributed in the hope that it will be useful,

 *   but WITHOUT ANY WARRANTY; without even the implied warranty of

 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *   GNU Lesser General Public License for more details.

 *

 *   You should have received a copy of the GNU Lesser General Public

 *   License along with this library; if not, write to the Free Software

 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 *

 */

#include <fcntl.h>

#include <sys/ioctl.h>

#include "seq_local.h"

#ifndef PIC

/* entry for static linking */

const char *_snd_module_seq_hw = "";

#endif

#ifndef DOC_HIDDEN

#define SNDRV_FILE_SEQ		ALSA_DEVICE_DIRECTORY "seq"

#define SNDRV_FILE_ALOADSEQ	ALOAD_DEVICE_DIRECTORY "aloadSEQ"

#define SNDRV_SEQ_VERSION_MAX	SNDRV_PROTOCOL_VERSION(1, 0, 2)

typedef struct {

	int fd;

	int version;

} snd_seq_hw_t;

#endif /* DOC_HIDDEN */

static int snd_seq_hw_close(snd_seq_t *seq)

{

	snd_seq_hw_t *hw = seq->private_data;

	int err = 0;

	if (close(hw->fd)) {

		err = -errno;

		SYSERR("close failed\n");

	}

	free(hw);

	return err;

}

static int snd_seq_hw_nonblock(snd_seq_t *seq, int nonblock)

{

	snd_seq_hw_t *hw = seq->private_data;

	long flags;

	if ((flags = fcntl(hw->fd, F_GETFL)) < 0) {

		SYSERR("F_GETFL failed");

		return -errno;

	}

	if (nonblock)

		flags |= O_NONBLOCK;

	else

		flags &= ~O_NONBLOCK;

	if (fcntl(hw->fd, F_SETFL, flags) < 0) {

		SYSERR("F_SETFL for O_NONBLOCK failed");

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_client_id(snd_seq_t *seq)

{

	snd_seq_hw_t *hw = seq->private_data;

	int client;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_CLIENT_ID, &client) < 0) {

		SYSERR("SNDRV_SEQ_IOCTL_CLIENT_ID failed");

		return -errno;

	}

	return client;

}

static int snd_seq_hw_system_info(snd_seq_t *seq, snd_seq_system_info_t * info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_SYSTEM_INFO, info) < 0) {

		SYSERR("SNDRV_SEQ_IOCTL_SYSTEM_INFO failed");

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_get_client_info(snd_seq_t *seq, snd_seq_client_info_t * info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_GET_CLIENT_INFO, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_GET_CLIENT_INFO failed");*/

		return -errno;

	}

	if (hw->version < SNDRV_PROTOCOL_VERSION(1, 0, 2)) {

		info->card = -1;

		info->pid = -1;

	}

	return 0;

}

static int snd_seq_hw_set_client_info(snd_seq_t *seq, snd_seq_client_info_t * info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_SET_CLIENT_INFO, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_SET_CLIENT_INFO failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_create_port(snd_seq_t *seq, snd_seq_port_info_t * port)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_CREATE_PORT, port) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_CREATE_PORT failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_delete_port(snd_seq_t *seq, snd_seq_port_info_t * port)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_DELETE_PORT, port) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_DELETE_PORT failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_get_port_info(snd_seq_t *seq, snd_seq_port_info_t * info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_GET_PORT_INFO, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_GET_PORT_INFO failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_set_port_info(snd_seq_t *seq, snd_seq_port_info_t * info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_SET_PORT_INFO, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_SET_PORT_INFO failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_get_port_subscription(snd_seq_t *seq, snd_seq_port_subscribe_t * sub)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION, sub) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_GET_SUBSCRIPTION failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_subscribe_port(snd_seq_t *seq, snd_seq_port_subscribe_t * sub)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT, sub) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_unsubscribe_port(snd_seq_t *seq, snd_seq_port_subscribe_t * sub)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT, sub) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_UNSUBSCRIBE_PORT failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_query_port_subscribers(snd_seq_t *seq, snd_seq_query_subscribe_t * subs)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_QUERY_SUBS, subs) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_QUERY_SUBS failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_get_queue_status(snd_seq_t *seq, snd_seq_queue_status_t * status)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, status) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_get_queue_tempo(snd_seq_t *seq, snd_seq_queue_tempo_t * tempo)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO, tempo) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_GET_QUEUE_TEMPO failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_set_queue_tempo(snd_seq_t *seq, snd_seq_queue_tempo_t * tempo)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO, tempo) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_SET_QUEUE_TEMPO failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_get_queue_timer(snd_seq_t *seq, snd_seq_queue_timer_t * timer)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER, timer) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_GET_QUEUE_TIMER failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_set_queue_timer(snd_seq_t *seq, snd_seq_queue_timer_t * timer)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER, timer) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_get_queue_client(snd_seq_t *seq, snd_seq_queue_client_t * info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_GET_QUEUE_CLIENT failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_set_queue_client(snd_seq_t *seq, snd_seq_queue_client_t * info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_create_queue(snd_seq_t *seq, snd_seq_queue_info_t *info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_CREATE_QUEUE, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_CREATE_QUEUE failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_delete_queue(snd_seq_t *seq, snd_seq_queue_info_t *info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_DELETE_QUEUE, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_DELETE_QUEUE failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_get_queue_info(snd_seq_t *seq, snd_seq_queue_info_t *info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_GET_QUEUE_INFO, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_GET_QUEUE_INFO failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_set_queue_info(snd_seq_t *seq, snd_seq_queue_info_t *info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_SET_QUEUE_INFO, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_SET_QUEUE_INFO failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_get_named_queue(snd_seq_t *seq, snd_seq_queue_info_t *info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_GET_NAMED_QUEUE failed");*/

		return -errno;

	}

	return 0;

}

static ssize_t snd_seq_hw_write(snd_seq_t *seq, void *buf, size_t len)

{

	snd_seq_hw_t *hw = seq->private_data;

	ssize_t result = write(hw->fd, buf, len);

	if (result < 0)

		return -errno;

	return result;

}

static ssize_t snd_seq_hw_read(snd_seq_t *seq, void *buf, size_t len)

{

	snd_seq_hw_t *hw = seq->private_data;

	ssize_t result = read(hw->fd, buf, len);

	if (result < 0)

		return -errno;

	return result;

}

static int snd_seq_hw_remove_events(snd_seq_t *seq, snd_seq_remove_events_t *rmp)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_REMOVE_EVENTS, rmp) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_REMOVE_EVENTS failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_get_client_pool(snd_seq_t *seq, snd_seq_client_pool_t *info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_GET_CLIENT_POOL, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_GET_CLIENT_POOL failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_set_client_pool(snd_seq_t *seq, snd_seq_client_pool_t *info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_SET_CLIENT_POOL, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_SET_CLIENT_POOL failed");*/

		return -errno;

	}

	return 0;

}

static int snd_seq_hw_query_next_client(snd_seq_t *seq, snd_seq_client_info_t *info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT failed");*/

		return -errno;

	}

	if (hw->version < SNDRV_PROTOCOL_VERSION(1, 0, 2)) {

		info->card = -1;

		info->pid = -1;

	}

	return 0;

}

static int snd_seq_hw_query_next_port(snd_seq_t *seq, snd_seq_port_info_t *info)

{

	snd_seq_hw_t *hw = seq->private_data;

	if (ioctl(hw->fd, SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT, info) < 0) {

		/*SYSERR("SNDRV_SEQ_IOCTL_QUERY_NEXT_PORT failed");*/

		return -errno;

	}

	return 0;

}

static const snd_seq_ops_t snd_seq_hw_ops = {

	.close = snd_seq_hw_close,

	.nonblock = snd_seq_hw_nonblock,

	.system_info = snd_seq_hw_system_info,

	.get_client_info = snd_seq_hw_get_client_info,

	.set_client_info = snd_seq_hw_set_client_info,

	.create_port = snd_seq_hw_create_port,

	.delete_port = snd_seq_hw_delete_port,

	.get_port_info = snd_seq_hw_get_port_info,

	.set_port_info = snd_seq_hw_set_port_info,

	.get_port_subscription = snd_seq_hw_get_port_subscription,

	.subscribe_port = snd_seq_hw_subscribe_port,

	.unsubscribe_port = snd_seq_hw_unsubscribe_port,

	.query_port_subscribers = snd_seq_hw_query_port_subscribers,

	.get_queue_status = snd_seq_hw_get_queue_status,

	.get_queue_tempo = snd_seq_hw_get_queue_tempo,

	.set_queue_tempo = snd_seq_hw_set_queue_tempo,

	.get_queue_timer = snd_seq_hw_get_queue_timer,

	.set_queue_timer = snd_seq_hw_set_queue_timer,

	.get_queue_client = snd_seq_hw_get_queue_client,

	.set_queue_client = snd_seq_hw_set_queue_client,

	.create_queue = snd_seq_hw_create_queue,

	.delete_queue = snd_seq_hw_delete_queue,

	.get_queue_info = snd_seq_hw_get_queue_info,

	.set_queue_info = snd_seq_hw_set_queue_info,

	.get_named_queue = snd_seq_hw_get_named_queue,

	.write = snd_seq_hw_write,

	.read = snd_seq_hw_read,

	.remove_events = snd_seq_hw_remove_events,

	.get_client_pool = snd_seq_hw_get_client_pool,

	.set_client_pool = snd_seq_hw_set_client_pool,

	.query_next_client = snd_seq_hw_query_next_client,

	.query_next_port = snd_seq_hw_query_next_port,

};

int snd_seq_hw_open(snd_seq_t **handle, const char *name, int streams, int mode)

{

	int fd, ver, client, fmode, ret;

	const char *filename;

	snd_seq_t *seq;

	snd_seq_hw_t *hw;

	*handle = NULL;

	switch (streams) {

	case SND_SEQ_OPEN_OUTPUT:

		fmode = O_WRONLY;

		break;

	case SND_SEQ_OPEN_INPUT:

		fmode = O_RDONLY;

		break;

	case SND_SEQ_OPEN_DUPLEX:

		fmode = O_RDWR;

		break;

	default:

		assert(0);

		return -EINVAL;

	}

	if (mode & SND_SEQ_NONBLOCK)

		fmode |= O_NONBLOCK;

	filename = SNDRV_FILE_SEQ;

	fd = snd_open_device(filename, fmode);

#ifdef SUPPORT_ALOAD

	if (fd < 0) {

		fd = snd_open_device(SNDRV_FILE_ALOADSEQ, fmode);

		if (fd >= 0)

			close(fd);

		fd = snd_open_device(filename, fmode);

	}

#endif

	if (fd < 0) {

		SYSERR("open %s failed", filename);

		return -errno;

	}

	if (ioctl(fd, SNDRV_SEQ_IOCTL_PVERSION, &ver) < 0) {

		SYSERR("SNDRV_SEQ_IOCTL_PVERSION failed");

		ret = -errno;

		close(fd);

		return ret;

	}

	if (SNDRV_PROTOCOL_INCOMPATIBLE(ver, SNDRV_SEQ_VERSION_MAX)) {

		close(fd);

		return -SND_ERROR_INCOMPATIBLE_VERSION;

	}

	hw = calloc(1, sizeof(snd_seq_hw_t));

	if (hw == NULL) {

		close(fd);

		return -ENOMEM;

	}

	seq = calloc(1, sizeof(snd_seq_t));

	if (seq == NULL) {

		free(hw);

		close(fd);

		return -ENOMEM;

	}

	hw->fd = fd;

	hw->version = ver;

	if (streams & SND_SEQ_OPEN_OUTPUT) {

		seq->obuf = (char *) malloc(seq->obufsize = SND_SEQ_OBUF_SIZE);

		if (!seq->obuf) {

			free(hw);

			free(seq);

			close(fd);

			return -ENOMEM;

		}

	}

	if (streams & SND_SEQ_OPEN_INPUT) {

		seq->ibuf = (snd_seq_event_t *) calloc(sizeof(snd_seq_event_t), seq->ibufsize = SND_SEQ_IBUF_SIZE);

		if (!seq->ibuf) {

			free(seq->obuf);

			free(hw);

			free(seq);

			close(fd);

			return -ENOMEM;

		}

	}

	if (name)

		seq->name = strdup(name);

	seq->type = SND_SEQ_TYPE_HW;

	seq->streams = streams;

	seq->mode = mode;

	seq->tmpbuf = NULL;

	seq->tmpbufsize = 0;

	seq->poll_fd = fd;

	seq->ops = &snd_seq_hw_ops;

	seq->private_data = hw;

	client = snd_seq_hw_client_id(seq);

	if (client < 0) {

		snd_seq_close(seq);

		return client;

	} else

		seq->client = client;

#ifdef SNDRV_SEQ_IOCTL_RUNNING_MODE

	{

		struct snd_seq_running_info run_mode;

		/* check running mode */

		memset(&run_mode, 0, sizeof(run_mode));

		run_mode.client = client;

#ifdef SNDRV_BIG_ENDIAN

		run_mode.big_endian = 1;

#else

		run_mode.big_endian = 0;

#endif

		run_mode.cpu_mode = sizeof(long);

		ioctl(fd, SNDRV_SEQ_IOCTL_RUNNING_MODE, &run_mode);

	}

#endif

	*handle = seq;

	return 0;

}

int _snd_seq_hw_open(snd_seq_t **handlep, char *name,

		     snd_config_t *root ATTRIBUTE_UNUSED, snd_config_t *conf,

		     int streams, int mode)

{

	snd_config_iterator_t i, next;

	snd_config_for_each(i, next, conf) {

		snd_config_t *n = snd_config_iterator_entry(i);

		const char *id;

		if (snd_config_get_id(n, &id) < 0)

			continue;

		if (_snd_conf_generic_id(id))

			continue;

		return -EINVAL;

	}

	return snd_seq_hw_open(handlep, name, streams, mode);

}

SND_DLSYM_BUILD_VERSION(_snd_seq_hw_open, SND_SEQ_DLSYM_VERSION);