Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/sound/core/seq/seq_ports.h b/sound/core/seq/seq_ports.h
new file mode 100644
index 0000000..89fd4416
--- /dev/null
+++ b/sound/core/seq/seq_ports.h
@@ -0,0 +1,128 @@
+/*
+ * ALSA sequencer Ports
+ * Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#ifndef __SND_SEQ_PORTS_H
+#define __SND_SEQ_PORTS_H
+
+#include <sound/seq_kernel.h>
+#include "seq_lock.h"
+
+/* list of 'exported' ports */
+
+/* Client ports that are not exported are still accessible, but are
+ anonymous ports.
+
+ If a port supports SUBSCRIPTION, that port can send events to all
+ subscribersto a special address, with address
+ (queue==SNDRV_SEQ_ADDRESS_SUBSCRIBERS). The message is then send to all
+ recipients that are registered in the subscription list. A typical
+ application for these SUBSCRIPTION events is handling of incoming MIDI
+ data. The port doesn't 'know' what other clients are interested in this
+ message. If for instance a MIDI recording application would like to receive
+ the events from that port, it will first have to subscribe with that port.
+
+*/
+
+typedef struct subscribers_t {
+ snd_seq_port_subscribe_t info; /* additional info */
+ struct list_head src_list; /* link of sources */
+ struct list_head dest_list; /* link of destinations */
+ atomic_t ref_count;
+} subscribers_t;
+
+typedef struct port_subs_info_t {
+ struct list_head list_head; /* list of subscribed ports */
+ unsigned int count; /* count of subscribers */
+ unsigned int exclusive: 1; /* exclusive mode */
+ struct rw_semaphore list_mutex;
+ rwlock_t list_lock;
+ snd_seq_kernel_port_open_t *open;
+ snd_seq_kernel_port_close_t *close;
+} port_subs_info_t;
+
+typedef struct client_port_t {
+
+ snd_seq_addr_t addr; /* client/port number */
+ struct module *owner; /* owner of this port */
+ char name[64]; /* port name */
+ struct list_head list; /* port list */
+ snd_use_lock_t use_lock;
+
+ /* subscribers */
+ port_subs_info_t c_src; /* read (sender) list */
+ port_subs_info_t c_dest; /* write (dest) list */
+
+ snd_seq_kernel_port_input_t *event_input;
+ snd_seq_kernel_port_private_free_t *private_free;
+ void *private_data;
+ unsigned int callback_all : 1;
+ unsigned int closing : 1;
+ unsigned int timestamping: 1;
+ unsigned int time_real: 1;
+ int time_queue;
+
+ /* capability, inport, output, sync */
+ unsigned int capability; /* port capability bits */
+ unsigned int type; /* port type bits */
+
+ /* supported channels */
+ int midi_channels;
+ int midi_voices;
+ int synth_voices;
+
+} client_port_t;
+
+/* return pointer to port structure and lock port */
+client_port_t *snd_seq_port_use_ptr(client_t *client, int num);
+
+/* search for next port - port is locked if found */
+client_port_t *snd_seq_port_query_nearest(client_t *client, snd_seq_port_info_t *pinfo);
+
+/* unlock the port */
+#define snd_seq_port_unlock(port) snd_use_lock_free(&(port)->use_lock)
+
+/* create a port, port number is returned (-1 on failure) */
+client_port_t *snd_seq_create_port(client_t *client, int port_index);
+
+/* delete a port */
+int snd_seq_delete_port(client_t *client, int port);
+
+/* delete all ports */
+int snd_seq_delete_all_ports(client_t *client);
+
+/* set port info fields */
+int snd_seq_set_port_info(client_port_t *port, snd_seq_port_info_t *info);
+
+/* get port info fields */
+int snd_seq_get_port_info(client_port_t *port, snd_seq_port_info_t *info);
+
+/* add subscriber to subscription list */
+int snd_seq_port_connect(client_t *caller, client_t *s, client_port_t *sp, client_t *d, client_port_t *dp, snd_seq_port_subscribe_t *info);
+
+/* remove subscriber from subscription list */
+int snd_seq_port_disconnect(client_t *caller, client_t *s, client_port_t *sp, client_t *d, client_port_t *dp, snd_seq_port_subscribe_t *info);
+
+/* subscribe port */
+int snd_seq_port_subscribe(client_port_t *port, snd_seq_port_subscribe_t *info);
+
+/* get matched subscriber */
+subscribers_t *snd_seq_port_get_subscription(port_subs_info_t *src_grp, snd_seq_addr_t *dest_addr);
+
+#endif
