2005-04-16 16:20:36 -06:00
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/*
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* ALSA sequencer Timing queue handling
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* Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* MAJOR CHANGES
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* Nov. 13, 1999 Takashi Iwai <iwai@ww.uni-erlangen.de>
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* - Queues are allocated dynamically via ioctl.
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* - When owner client is deleted, all owned queues are deleted, too.
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* - Owner of unlocked queue is kept unmodified even if it is
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* manipulated by other clients.
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* - Owner field in SET_QUEUE_OWNER ioctl must be identical with the
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* caller client. i.e. Changing owner to a third client is not
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* allowed.
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*
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* Aug. 30, 2000 Takashi Iwai
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* - Queues are managed in static array again, but with better way.
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* The API itself is identical.
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2005-11-17 06:04:02 -07:00
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* - The queue is locked when struct snd_seq_queue pointer is returned via
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2005-04-16 16:20:36 -06:00
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* queueptr(). This pointer *MUST* be released afterward by
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* queuefree(ptr).
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* - Addition of experimental sync support.
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*/
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <sound/core.h>
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#include "seq_memory.h"
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#include "seq_queue.h"
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#include "seq_clientmgr.h"
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#include "seq_fifo.h"
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#include "seq_timer.h"
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#include "seq_info.h"
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/* list of allocated queues */
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2005-11-17 06:04:02 -07:00
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static struct snd_seq_queue *queue_list[SNDRV_SEQ_MAX_QUEUES];
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2005-04-16 16:20:36 -06:00
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static DEFINE_SPINLOCK(queue_list_lock);
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/* number of queues allocated */
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static int num_queues;
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int snd_seq_queue_get_cur_queues(void)
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{
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return num_queues;
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}
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/*----------------------------------------------------------------*/
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/* assign queue id and insert to list */
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2005-11-17 06:04:02 -07:00
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static int queue_list_add(struct snd_seq_queue *q)
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2005-04-16 16:20:36 -06:00
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{
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int i;
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unsigned long flags;
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spin_lock_irqsave(&queue_list_lock, flags);
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for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) {
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if (! queue_list[i]) {
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queue_list[i] = q;
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q->queue = i;
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num_queues++;
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spin_unlock_irqrestore(&queue_list_lock, flags);
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return i;
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}
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}
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spin_unlock_irqrestore(&queue_list_lock, flags);
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return -1;
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}
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2005-11-17 06:04:02 -07:00
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static struct snd_seq_queue *queue_list_remove(int id, int client)
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2005-04-16 16:20:36 -06:00
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{
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2005-11-17 06:04:02 -07:00
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struct snd_seq_queue *q;
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2005-04-16 16:20:36 -06:00
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unsigned long flags;
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spin_lock_irqsave(&queue_list_lock, flags);
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q = queue_list[id];
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if (q) {
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spin_lock(&q->owner_lock);
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if (q->owner == client) {
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/* found */
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q->klocked = 1;
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spin_unlock(&q->owner_lock);
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queue_list[id] = NULL;
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num_queues--;
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spin_unlock_irqrestore(&queue_list_lock, flags);
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return q;
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}
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spin_unlock(&q->owner_lock);
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}
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spin_unlock_irqrestore(&queue_list_lock, flags);
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return NULL;
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}
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/*----------------------------------------------------------------*/
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/* create new queue (constructor) */
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2005-11-17 06:04:02 -07:00
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static struct snd_seq_queue *queue_new(int owner, int locked)
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2005-04-16 16:20:36 -06:00
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{
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2005-11-17 06:04:02 -07:00
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struct snd_seq_queue *q;
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2005-04-16 16:20:36 -06:00
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2005-09-09 06:20:49 -06:00
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q = kzalloc(sizeof(*q), GFP_KERNEL);
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2015-03-10 08:41:18 -06:00
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if (!q)
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2005-04-16 16:20:36 -06:00
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return NULL;
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spin_lock_init(&q->owner_lock);
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spin_lock_init(&q->check_lock);
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2006-01-16 08:29:08 -07:00
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mutex_init(&q->timer_mutex);
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2005-04-16 16:20:36 -06:00
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snd_use_lock_init(&q->use_lock);
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q->queue = -1;
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q->tickq = snd_seq_prioq_new();
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q->timeq = snd_seq_prioq_new();
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q->timer = snd_seq_timer_new();
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if (q->tickq == NULL || q->timeq == NULL || q->timer == NULL) {
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snd_seq_prioq_delete(&q->tickq);
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snd_seq_prioq_delete(&q->timeq);
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snd_seq_timer_delete(&q->timer);
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kfree(q);
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return NULL;
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}
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q->owner = owner;
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q->locked = locked;
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q->klocked = 0;
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return q;
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}
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/* delete queue (destructor) */
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2005-11-17 06:04:02 -07:00
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static void queue_delete(struct snd_seq_queue *q)
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2005-04-16 16:20:36 -06:00
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{
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/* stop and release the timer */
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snd_seq_timer_stop(q->timer);
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snd_seq_timer_close(q);
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/* wait until access free */
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snd_use_lock_sync(&q->use_lock);
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/* release resources... */
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snd_seq_prioq_delete(&q->tickq);
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snd_seq_prioq_delete(&q->timeq);
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snd_seq_timer_delete(&q->timer);
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kfree(q);
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}
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/*----------------------------------------------------------------*/
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/* setup queues */
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int __init snd_seq_queues_init(void)
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{
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/*
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memset(queue_list, 0, sizeof(queue_list));
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num_queues = 0;
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*/
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return 0;
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}
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/* delete all existing queues */
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void __exit snd_seq_queues_delete(void)
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{
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int i;
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/* clear list */
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for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) {
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if (queue_list[i])
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queue_delete(queue_list[i]);
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}
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}
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/* allocate a new queue -
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* return queue index value or negative value for error
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*/
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int snd_seq_queue_alloc(int client, int locked, unsigned int info_flags)
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{
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2005-11-17 06:04:02 -07:00
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struct snd_seq_queue *q;
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2005-04-16 16:20:36 -06:00
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q = queue_new(client, locked);
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if (q == NULL)
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return -ENOMEM;
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q->info_flags = info_flags;
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if (queue_list_add(q) < 0) {
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queue_delete(q);
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return -ENOMEM;
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}
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snd_seq_queue_use(q->queue, client, 1); /* use this queue */
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return q->queue;
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}
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/* delete a queue - queue must be owned by the client */
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int snd_seq_queue_delete(int client, int queueid)
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{
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2005-11-17 06:04:02 -07:00
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struct snd_seq_queue *q;
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2005-04-16 16:20:36 -06:00
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if (queueid < 0 || queueid >= SNDRV_SEQ_MAX_QUEUES)
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return -EINVAL;
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q = queue_list_remove(queueid, client);
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if (q == NULL)
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return -EINVAL;
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queue_delete(q);
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return 0;
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}
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/* return pointer to queue structure for specified id */
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2005-11-17 06:04:02 -07:00
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struct snd_seq_queue *queueptr(int queueid)
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2005-04-16 16:20:36 -06:00
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{
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2005-11-17 06:04:02 -07:00
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struct snd_seq_queue *q;
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2005-04-16 16:20:36 -06:00
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unsigned long flags;
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if (queueid < 0 || queueid >= SNDRV_SEQ_MAX_QUEUES)
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return NULL;
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spin_lock_irqsave(&queue_list_lock, flags);
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q = queue_list[queueid];
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if (q)
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snd_use_lock_use(&q->use_lock);
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spin_unlock_irqrestore(&queue_list_lock, flags);
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return q;
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}
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/* return the (first) queue matching with the specified name */
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2005-11-17 06:04:02 -07:00
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struct snd_seq_queue *snd_seq_queue_find_name(char *name)
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2005-04-16 16:20:36 -06:00
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{
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int i;
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2005-11-17 06:04:02 -07:00
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struct snd_seq_queue *q;
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2005-04-16 16:20:36 -06:00
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for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) {
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if ((q = queueptr(i)) != NULL) {
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if (strncmp(q->name, name, sizeof(q->name)) == 0)
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return q;
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queuefree(q);
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}
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}
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return NULL;
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}
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/* -------------------------------------------------------- */
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2005-11-17 06:04:02 -07:00
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void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop)
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2005-04-16 16:20:36 -06:00
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{
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unsigned long flags;
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2005-11-17 06:04:02 -07:00
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struct snd_seq_event_cell *cell;
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2005-04-16 16:20:36 -06:00
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if (q == NULL)
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return;
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/* make this function non-reentrant */
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spin_lock_irqsave(&q->check_lock, flags);
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if (q->check_blocked) {
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q->check_again = 1;
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spin_unlock_irqrestore(&q->check_lock, flags);
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return; /* other thread is already checking queues */
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}
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q->check_blocked = 1;
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spin_unlock_irqrestore(&q->check_lock, flags);
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__again:
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/* Process tick queue... */
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while ((cell = snd_seq_prioq_cell_peek(q->tickq)) != NULL) {
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2005-11-17 06:04:02 -07:00
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if (snd_seq_compare_tick_time(&q->timer->tick.cur_tick,
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&cell->event.time.tick)) {
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2005-04-16 16:20:36 -06:00
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cell = snd_seq_prioq_cell_out(q->tickq);
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if (cell)
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snd_seq_dispatch_event(cell, atomic, hop);
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} else {
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/* event remains in the queue */
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break;
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}
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}
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/* Process time queue... */
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while ((cell = snd_seq_prioq_cell_peek(q->timeq)) != NULL) {
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2005-11-17 06:04:02 -07:00
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if (snd_seq_compare_real_time(&q->timer->cur_time,
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&cell->event.time.time)) {
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2005-04-16 16:20:36 -06:00
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cell = snd_seq_prioq_cell_out(q->timeq);
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if (cell)
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snd_seq_dispatch_event(cell, atomic, hop);
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} else {
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/* event remains in the queue */
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break;
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}
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}
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/* free lock */
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spin_lock_irqsave(&q->check_lock, flags);
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if (q->check_again) {
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q->check_again = 0;
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spin_unlock_irqrestore(&q->check_lock, flags);
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goto __again;
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}
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q->check_blocked = 0;
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spin_unlock_irqrestore(&q->check_lock, flags);
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}
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/* enqueue a event to singe queue */
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2005-11-17 06:04:02 -07:00
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int snd_seq_enqueue_event(struct snd_seq_event_cell *cell, int atomic, int hop)
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2005-04-16 16:20:36 -06:00
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{
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int dest, err;
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2005-11-17 06:04:02 -07:00
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struct snd_seq_queue *q;
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2005-04-16 16:20:36 -06:00
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2008-08-08 09:09:09 -06:00
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if (snd_BUG_ON(!cell))
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return -EINVAL;
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2005-04-16 16:20:36 -06:00
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dest = cell->event.queue; /* destination queue */
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q = queueptr(dest);
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if (q == NULL)
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return -EINVAL;
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/* handle relative time stamps, convert them into absolute */
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if ((cell->event.flags & SNDRV_SEQ_TIME_MODE_MASK) == SNDRV_SEQ_TIME_MODE_REL) {
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switch (cell->event.flags & SNDRV_SEQ_TIME_STAMP_MASK) {
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case SNDRV_SEQ_TIME_STAMP_TICK:
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cell->event.time.tick += q->timer->tick.cur_tick;
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break;
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case SNDRV_SEQ_TIME_STAMP_REAL:
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2005-11-17 06:04:02 -07:00
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snd_seq_inc_real_time(&cell->event.time.time,
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&q->timer->cur_time);
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2005-04-16 16:20:36 -06:00
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break;
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}
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cell->event.flags &= ~SNDRV_SEQ_TIME_MODE_MASK;
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cell->event.flags |= SNDRV_SEQ_TIME_MODE_ABS;
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}
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/* enqueue event in the real-time or midi queue */
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switch (cell->event.flags & SNDRV_SEQ_TIME_STAMP_MASK) {
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case SNDRV_SEQ_TIME_STAMP_TICK:
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err = snd_seq_prioq_cell_in(q->tickq, cell);
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break;
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case SNDRV_SEQ_TIME_STAMP_REAL:
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default:
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|
|
err = snd_seq_prioq_cell_in(q->timeq, cell);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (err < 0) {
|
|
|
|
queuefree(q); /* unlock */
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* trigger dispatching */
|
|
|
|
snd_seq_check_queue(q, atomic, hop);
|
|
|
|
|
|
|
|
queuefree(q); /* unlock */
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*----------------------------------------------------------------*/
|
|
|
|
|
2005-11-17 06:04:02 -07:00
|
|
|
static inline int check_access(struct snd_seq_queue *q, int client)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
return (q->owner == client) || (!q->locked && !q->klocked);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* check if the client has permission to modify queue parameters.
|
|
|
|
* if it does, lock the queue
|
|
|
|
*/
|
2005-11-17 06:04:02 -07:00
|
|
|
static int queue_access_lock(struct snd_seq_queue *q, int client)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
int access_ok;
|
|
|
|
|
|
|
|
spin_lock_irqsave(&q->owner_lock, flags);
|
|
|
|
access_ok = check_access(q, client);
|
|
|
|
if (access_ok)
|
|
|
|
q->klocked = 1;
|
|
|
|
spin_unlock_irqrestore(&q->owner_lock, flags);
|
|
|
|
return access_ok;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* unlock the queue */
|
2005-11-17 06:04:02 -07:00
|
|
|
static inline void queue_access_unlock(struct snd_seq_queue *q)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
spin_lock_irqsave(&q->owner_lock, flags);
|
|
|
|
q->klocked = 0;
|
|
|
|
spin_unlock_irqrestore(&q->owner_lock, flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* exported - only checking permission */
|
|
|
|
int snd_seq_queue_check_access(int queueid, int client)
|
|
|
|
{
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *q = queueptr(queueid);
|
2005-04-16 16:20:36 -06:00
|
|
|
int access_ok;
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
if (! q)
|
|
|
|
return 0;
|
|
|
|
spin_lock_irqsave(&q->owner_lock, flags);
|
|
|
|
access_ok = check_access(q, client);
|
|
|
|
spin_unlock_irqrestore(&q->owner_lock, flags);
|
|
|
|
queuefree(q);
|
|
|
|
return access_ok;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*----------------------------------------------------------------*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* change queue's owner and permission
|
|
|
|
*/
|
|
|
|
int snd_seq_queue_set_owner(int queueid, int client, int locked)
|
|
|
|
{
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *q = queueptr(queueid);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
if (q == NULL)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (! queue_access_lock(q, client)) {
|
|
|
|
queuefree(q);
|
|
|
|
return -EPERM;
|
|
|
|
}
|
|
|
|
|
|
|
|
q->locked = locked ? 1 : 0;
|
|
|
|
q->owner = client;
|
|
|
|
queue_access_unlock(q);
|
|
|
|
queuefree(q);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*----------------------------------------------------------------*/
|
|
|
|
|
|
|
|
/* open timer -
|
|
|
|
* q->use mutex should be down before calling this function to avoid
|
|
|
|
* confliction with snd_seq_queue_use()
|
|
|
|
*/
|
|
|
|
int snd_seq_queue_timer_open(int queueid)
|
|
|
|
{
|
|
|
|
int result = 0;
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *queue;
|
|
|
|
struct snd_seq_timer *tmr;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
queue = queueptr(queueid);
|
|
|
|
if (queue == NULL)
|
|
|
|
return -EINVAL;
|
|
|
|
tmr = queue->timer;
|
|
|
|
if ((result = snd_seq_timer_open(queue)) < 0) {
|
|
|
|
snd_seq_timer_defaults(tmr);
|
|
|
|
result = snd_seq_timer_open(queue);
|
|
|
|
}
|
|
|
|
queuefree(queue);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* close timer -
|
|
|
|
* q->use mutex should be down before calling this function
|
|
|
|
*/
|
|
|
|
int snd_seq_queue_timer_close(int queueid)
|
|
|
|
{
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *queue;
|
2005-04-16 16:20:36 -06:00
|
|
|
int result = 0;
|
|
|
|
|
|
|
|
queue = queueptr(queueid);
|
|
|
|
if (queue == NULL)
|
|
|
|
return -EINVAL;
|
|
|
|
snd_seq_timer_close(queue);
|
|
|
|
queuefree(queue);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* change queue tempo and ppq */
|
2005-11-17 06:04:02 -07:00
|
|
|
int snd_seq_queue_timer_set_tempo(int queueid, int client,
|
|
|
|
struct snd_seq_queue_tempo *info)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *q = queueptr(queueid);
|
2005-04-16 16:20:36 -06:00
|
|
|
int result;
|
|
|
|
|
|
|
|
if (q == NULL)
|
|
|
|
return -EINVAL;
|
|
|
|
if (! queue_access_lock(q, client)) {
|
|
|
|
queuefree(q);
|
|
|
|
return -EPERM;
|
|
|
|
}
|
|
|
|
|
|
|
|
result = snd_seq_timer_set_tempo(q->timer, info->tempo);
|
|
|
|
if (result >= 0)
|
|
|
|
result = snd_seq_timer_set_ppq(q->timer, info->ppq);
|
|
|
|
if (result >= 0 && info->skew_base > 0)
|
2005-11-17 06:04:02 -07:00
|
|
|
result = snd_seq_timer_set_skew(q->timer, info->skew_value,
|
|
|
|
info->skew_base);
|
2005-04-16 16:20:36 -06:00
|
|
|
queue_access_unlock(q);
|
|
|
|
queuefree(q);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* use or unuse this queue -
|
|
|
|
* if it is the first client, starts the timer.
|
|
|
|
* if it is not longer used by any clients, stop the timer.
|
|
|
|
*/
|
|
|
|
int snd_seq_queue_use(int queueid, int client, int use)
|
|
|
|
{
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *queue;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
queue = queueptr(queueid);
|
|
|
|
if (queue == NULL)
|
|
|
|
return -EINVAL;
|
2006-01-16 08:29:08 -07:00
|
|
|
mutex_lock(&queue->timer_mutex);
|
2005-04-16 16:20:36 -06:00
|
|
|
if (use) {
|
|
|
|
if (!test_and_set_bit(client, queue->clients_bitmap))
|
|
|
|
queue->clients++;
|
|
|
|
} else {
|
|
|
|
if (test_and_clear_bit(client, queue->clients_bitmap))
|
|
|
|
queue->clients--;
|
|
|
|
}
|
|
|
|
if (queue->clients) {
|
|
|
|
if (use && queue->clients == 1)
|
|
|
|
snd_seq_timer_defaults(queue->timer);
|
|
|
|
snd_seq_timer_open(queue);
|
|
|
|
} else {
|
|
|
|
snd_seq_timer_close(queue);
|
|
|
|
}
|
2006-01-16 08:29:08 -07:00
|
|
|
mutex_unlock(&queue->timer_mutex);
|
2005-04-16 16:20:36 -06:00
|
|
|
queuefree(queue);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* check if queue is used by the client
|
|
|
|
* return negative value if the queue is invalid.
|
|
|
|
* return 0 if not used, 1 if used.
|
|
|
|
*/
|
|
|
|
int snd_seq_queue_is_used(int queueid, int client)
|
|
|
|
{
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *q;
|
2005-04-16 16:20:36 -06:00
|
|
|
int result;
|
|
|
|
|
|
|
|
q = queueptr(queueid);
|
|
|
|
if (q == NULL)
|
|
|
|
return -EINVAL; /* invalid queue */
|
|
|
|
result = test_bit(client, q->clients_bitmap) ? 1 : 0;
|
|
|
|
queuefree(q);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*----------------------------------------------------------------*/
|
|
|
|
|
|
|
|
/* notification that client has left the system -
|
|
|
|
* stop the timer on all queues owned by this client
|
|
|
|
*/
|
|
|
|
void snd_seq_queue_client_termination(int client)
|
|
|
|
{
|
|
|
|
unsigned long flags;
|
|
|
|
int i;
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *q;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) {
|
|
|
|
if ((q = queueptr(i)) == NULL)
|
|
|
|
continue;
|
|
|
|
spin_lock_irqsave(&q->owner_lock, flags);
|
|
|
|
if (q->owner == client)
|
|
|
|
q->klocked = 1;
|
|
|
|
spin_unlock_irqrestore(&q->owner_lock, flags);
|
|
|
|
if (q->owner == client) {
|
|
|
|
if (q->timer->running)
|
|
|
|
snd_seq_timer_stop(q->timer);
|
|
|
|
snd_seq_timer_reset(q->timer);
|
|
|
|
}
|
|
|
|
queuefree(q);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* final stage notification -
|
|
|
|
* remove cells for no longer exist client (for non-owned queue)
|
|
|
|
* or delete this queue (for owned queue)
|
|
|
|
*/
|
|
|
|
void snd_seq_queue_client_leave(int client)
|
|
|
|
{
|
|
|
|
int i;
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *q;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* delete own queues from queue list */
|
|
|
|
for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) {
|
|
|
|
if ((q = queue_list_remove(i, client)) != NULL)
|
|
|
|
queue_delete(q);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* remove cells from existing queues -
|
|
|
|
* they are not owned by this client
|
|
|
|
*/
|
|
|
|
for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) {
|
|
|
|
if ((q = queueptr(i)) == NULL)
|
|
|
|
continue;
|
|
|
|
if (test_bit(client, q->clients_bitmap)) {
|
|
|
|
snd_seq_prioq_leave(q->tickq, client, 0);
|
|
|
|
snd_seq_prioq_leave(q->timeq, client, 0);
|
|
|
|
snd_seq_queue_use(q->queue, client, 0);
|
|
|
|
}
|
|
|
|
queuefree(q);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*----------------------------------------------------------------*/
|
|
|
|
|
|
|
|
/* remove cells from all queues */
|
|
|
|
void snd_seq_queue_client_leave_cells(int client)
|
|
|
|
{
|
|
|
|
int i;
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *q;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) {
|
|
|
|
if ((q = queueptr(i)) == NULL)
|
|
|
|
continue;
|
|
|
|
snd_seq_prioq_leave(q->tickq, client, 0);
|
|
|
|
snd_seq_prioq_leave(q->timeq, client, 0);
|
|
|
|
queuefree(q);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* remove cells based on flush criteria */
|
2005-11-17 06:04:02 -07:00
|
|
|
void snd_seq_queue_remove_cells(int client, struct snd_seq_remove_events *info)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
int i;
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *q;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) {
|
|
|
|
if ((q = queueptr(i)) == NULL)
|
|
|
|
continue;
|
|
|
|
if (test_bit(client, q->clients_bitmap) &&
|
|
|
|
(! (info->remove_mode & SNDRV_SEQ_REMOVE_DEST) ||
|
|
|
|
q->queue == info->queue)) {
|
|
|
|
snd_seq_prioq_remove_events(q->tickq, client, info);
|
|
|
|
snd_seq_prioq_remove_events(q->timeq, client, info);
|
|
|
|
}
|
|
|
|
queuefree(q);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*----------------------------------------------------------------*/
|
|
|
|
|
|
|
|
/*
|
|
|
|
* send events to all subscribed ports
|
|
|
|
*/
|
2005-11-17 06:04:02 -07:00
|
|
|
static void queue_broadcast_event(struct snd_seq_queue *q, struct snd_seq_event *ev,
|
|
|
|
int atomic, int hop)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_event sev;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
sev = *ev;
|
|
|
|
|
|
|
|
sev.flags = SNDRV_SEQ_TIME_STAMP_TICK|SNDRV_SEQ_TIME_MODE_ABS;
|
|
|
|
sev.time.tick = q->timer->tick.cur_tick;
|
|
|
|
sev.queue = q->queue;
|
|
|
|
sev.data.queue.queue = q->queue;
|
|
|
|
|
|
|
|
/* broadcast events from Timer port */
|
|
|
|
sev.source.client = SNDRV_SEQ_CLIENT_SYSTEM;
|
|
|
|
sev.source.port = SNDRV_SEQ_PORT_SYSTEM_TIMER;
|
|
|
|
sev.dest.client = SNDRV_SEQ_ADDRESS_SUBSCRIBERS;
|
|
|
|
snd_seq_kernel_client_dispatch(SNDRV_SEQ_CLIENT_SYSTEM, &sev, atomic, hop);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* process a received queue-control event.
|
|
|
|
* this function is exported for seq_sync.c.
|
|
|
|
*/
|
2005-11-17 06:04:02 -07:00
|
|
|
static void snd_seq_queue_process_event(struct snd_seq_queue *q,
|
|
|
|
struct snd_seq_event *ev,
|
2005-05-18 10:02:04 -06:00
|
|
|
int atomic, int hop)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
switch (ev->type) {
|
|
|
|
case SNDRV_SEQ_EVENT_START:
|
|
|
|
snd_seq_prioq_leave(q->tickq, ev->source.client, 1);
|
|
|
|
snd_seq_prioq_leave(q->timeq, ev->source.client, 1);
|
|
|
|
if (! snd_seq_timer_start(q->timer))
|
|
|
|
queue_broadcast_event(q, ev, atomic, hop);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SNDRV_SEQ_EVENT_CONTINUE:
|
|
|
|
if (! snd_seq_timer_continue(q->timer))
|
|
|
|
queue_broadcast_event(q, ev, atomic, hop);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SNDRV_SEQ_EVENT_STOP:
|
|
|
|
snd_seq_timer_stop(q->timer);
|
|
|
|
queue_broadcast_event(q, ev, atomic, hop);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SNDRV_SEQ_EVENT_TEMPO:
|
|
|
|
snd_seq_timer_set_tempo(q->timer, ev->data.queue.param.value);
|
|
|
|
queue_broadcast_event(q, ev, atomic, hop);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SNDRV_SEQ_EVENT_SETPOS_TICK:
|
|
|
|
if (snd_seq_timer_set_position_tick(q->timer, ev->data.queue.param.time.tick) == 0) {
|
|
|
|
queue_broadcast_event(q, ev, atomic, hop);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SNDRV_SEQ_EVENT_SETPOS_TIME:
|
|
|
|
if (snd_seq_timer_set_position_time(q->timer, ev->data.queue.param.time.time) == 0) {
|
|
|
|
queue_broadcast_event(q, ev, atomic, hop);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case SNDRV_SEQ_EVENT_QUEUE_SKEW:
|
|
|
|
if (snd_seq_timer_set_skew(q->timer,
|
|
|
|
ev->data.queue.param.skew.value,
|
|
|
|
ev->data.queue.param.skew.base) == 0) {
|
|
|
|
queue_broadcast_event(q, ev, atomic, hop);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Queue control via timer control port:
|
|
|
|
* this function is exported as a callback of timer port.
|
|
|
|
*/
|
2005-11-17 06:04:02 -07:00
|
|
|
int snd_seq_control_queue(struct snd_seq_event *ev, int atomic, int hop)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *q;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2008-08-08 09:09:09 -06:00
|
|
|
if (snd_BUG_ON(!ev))
|
|
|
|
return -EINVAL;
|
2005-04-16 16:20:36 -06:00
|
|
|
q = queueptr(ev->data.queue.queue);
|
|
|
|
|
|
|
|
if (q == NULL)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (! queue_access_lock(q, ev->source.client)) {
|
|
|
|
queuefree(q);
|
|
|
|
return -EPERM;
|
|
|
|
}
|
|
|
|
|
|
|
|
snd_seq_queue_process_event(q, ev, atomic, hop);
|
|
|
|
|
|
|
|
queue_access_unlock(q);
|
|
|
|
queuefree(q);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*----------------------------------------------------------------*/
|
|
|
|
|
2015-05-27 05:45:45 -06:00
|
|
|
#ifdef CONFIG_SND_PROC_FS
|
2005-04-16 16:20:36 -06:00
|
|
|
/* exported to seq_info.c */
|
2005-11-17 06:04:02 -07:00
|
|
|
void snd_seq_info_queues_read(struct snd_info_entry *entry,
|
|
|
|
struct snd_info_buffer *buffer)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
int i, bpm;
|
2005-11-17 06:04:02 -07:00
|
|
|
struct snd_seq_queue *q;
|
|
|
|
struct snd_seq_timer *tmr;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) {
|
|
|
|
if ((q = queueptr(i)) == NULL)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
tmr = q->timer;
|
|
|
|
if (tmr->tempo)
|
|
|
|
bpm = 60000000 / tmr->tempo;
|
|
|
|
else
|
|
|
|
bpm = 0;
|
|
|
|
|
|
|
|
snd_iprintf(buffer, "queue %d: [%s]\n", q->queue, q->name);
|
|
|
|
snd_iprintf(buffer, "owned by client : %d\n", q->owner);
|
|
|
|
snd_iprintf(buffer, "lock status : %s\n", q->locked ? "Locked" : "Free");
|
|
|
|
snd_iprintf(buffer, "queued time events : %d\n", snd_seq_prioq_avail(q->timeq));
|
|
|
|
snd_iprintf(buffer, "queued tick events : %d\n", snd_seq_prioq_avail(q->tickq));
|
|
|
|
snd_iprintf(buffer, "timer state : %s\n", tmr->running ? "Running" : "Stopped");
|
|
|
|
snd_iprintf(buffer, "timer PPQ : %d\n", tmr->ppq);
|
|
|
|
snd_iprintf(buffer, "current tempo : %d\n", tmr->tempo);
|
|
|
|
snd_iprintf(buffer, "current BPM : %d\n", bpm);
|
|
|
|
snd_iprintf(buffer, "current time : %d.%09d s\n", tmr->cur_time.tv_sec, tmr->cur_time.tv_nsec);
|
|
|
|
snd_iprintf(buffer, "current tick : %d\n", tmr->tick.cur_tick);
|
|
|
|
snd_iprintf(buffer, "\n");
|
|
|
|
queuefree(q);
|
|
|
|
}
|
|
|
|
}
|
2015-05-27 05:45:45 -06:00
|
|
|
#endif /* CONFIG_SND_PROC_FS */
|
2005-12-01 02:43:51 -07:00
|
|
|
|