#include <sound/asound.h>
/** version of the sequencer */
-#define SNDRV_SEQ_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 2)
+#define SNDRV_SEQ_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 3)
/**
* definition of sequencer event types
#define SNDRV_SEQ_PRIORITY_HIGH (1<<4) /* event should be processed before others */
#define SNDRV_SEQ_PRIORITY_MASK (1<<4)
+#define SNDRV_SEQ_EVENT_UMP (1<<5) /* event holds a UMP packet */
/* note event */
struct snd_seq_ev_note {
struct snd_seq_event *event; /* quoted event */
} __attribute__((packed));
+union snd_seq_event_data { /* event data... */
+ struct snd_seq_ev_note note;
+ struct snd_seq_ev_ctrl control;
+ struct snd_seq_ev_raw8 raw8;
+ struct snd_seq_ev_raw32 raw32;
+ struct snd_seq_ev_ext ext;
+ struct snd_seq_ev_queue_control queue;
+ union snd_seq_timestamp time;
+ struct snd_seq_addr addr;
+ struct snd_seq_connect connect;
+ struct snd_seq_result result;
+ struct snd_seq_ev_quote quote;
+};
/* sequencer event */
struct snd_seq_event {
unsigned char queue; /* schedule queue */
union snd_seq_timestamp time; /* schedule time */
-
struct snd_seq_addr source; /* source address */
struct snd_seq_addr dest; /* destination address */
- union { /* event data... */
- struct snd_seq_ev_note note;
- struct snd_seq_ev_ctrl control;
- struct snd_seq_ev_raw8 raw8;
- struct snd_seq_ev_raw32 raw32;
- struct snd_seq_ev_ext ext;
- struct snd_seq_ev_queue_control queue;
- union snd_seq_timestamp time;
- struct snd_seq_addr addr;
- struct snd_seq_connect connect;
- struct snd_seq_result result;
- struct snd_seq_ev_quote quote;
- } data;
+ union snd_seq_event_data data;
};
+ /* (compatible) event for UMP-capable clients */
+struct snd_seq_ump_event {
+ snd_seq_event_type_t type; /* event type */
+ unsigned char flags; /* event flags */
+ char tag;
+ unsigned char queue; /* schedule queue */
+ union snd_seq_timestamp time; /* schedule time */
+ struct snd_seq_addr source; /* source address */
+ struct snd_seq_addr dest; /* destination address */
+
+ union {
+ union snd_seq_event_data data;
+ unsigned int ump[4];
+ };
+};
/*
* bounce event - stored as variable size data
int event_lost; /* number of lost events */
int card; /* RO: card number[kernel] */
int pid; /* RO: pid[user] */
- char reserved[56]; /* for future use */
+ unsigned int midi_version; /* MIDI version */
+ char reserved[52]; /* for future use */
};
+/* MIDI version numbers in client info */
+#define SNDRV_SEQ_CLIENT_LEGACY_MIDI 0 /* Legacy client */
+#define SNDRV_SEQ_CLIENT_UMP_MIDI_1_0 1 /* UMP MIDI 1.0 */
+#define SNDRV_SEQ_CLIENT_UMP_MIDI_2_0 2 /* UMP MIDI 2.0 */
/* client pool size */
struct snd_seq_client_pool {
return 0;
}
+static bool event_is_compatible(const struct snd_seq_client *client,
+ const struct snd_seq_event *ev)
+{
+ if (snd_seq_ev_is_ump(ev) && !client->midi_version)
+ return false;
+ if (snd_seq_ev_is_ump(ev) && snd_seq_ev_is_variable(ev))
+ return false;
+ return true;
+}
/* handle client read() */
/* possible error values:
{
struct snd_seq_client *client = file->private_data;
struct snd_seq_fifo *fifo;
+ size_t aligned_size;
int err;
long result = 0;
struct snd_seq_event_cell *cell;
err = 0;
snd_seq_fifo_lock(fifo);
+ if (client->midi_version > 0)
+ aligned_size = sizeof(struct snd_seq_ump_event);
+ else
+ aligned_size = sizeof(struct snd_seq_event);
+
/* while data available in queue */
- while (count >= sizeof(struct snd_seq_event)) {
+ while (count >= aligned_size) {
int nonblock;
nonblock = (file->f_flags & O_NONBLOCK) || result > 0;
err = snd_seq_fifo_cell_out(fifo, &cell, nonblock);
if (err < 0)
break;
+ if (!event_is_compatible(client, &cell->event)) {
+ snd_seq_cell_free(cell);
+ cell = NULL;
+ continue;
+ }
if (snd_seq_ev_is_variable(&cell->event)) {
- struct snd_seq_event tmpev;
- tmpev = cell->event;
+ struct snd_seq_ump_event tmpev;
+
+ memcpy(&tmpev, &cell->event, aligned_size);
tmpev.data.ext.len &= ~SNDRV_SEQ_EXT_MASK;
- if (copy_to_user(buf, &tmpev, sizeof(struct snd_seq_event))) {
+ if (copy_to_user(buf, &tmpev, aligned_size)) {
err = -EFAULT;
break;
}
- count -= sizeof(struct snd_seq_event);
- buf += sizeof(struct snd_seq_event);
+ count -= aligned_size;
+ buf += aligned_size;
err = snd_seq_expand_var_event(&cell->event, count,
(char __force *)buf, 0,
- sizeof(struct snd_seq_event));
+ aligned_size);
if (err < 0)
break;
result += err;
count -= err;
buf += err;
} else {
- if (copy_to_user(buf, &cell->event, sizeof(struct snd_seq_event))) {
+ if (copy_to_user(buf, &cell->event, aligned_size)) {
err = -EFAULT;
break;
}
- count -= sizeof(struct snd_seq_event);
- buf += sizeof(struct snd_seq_event);
+ count -= aligned_size;
+ buf += aligned_size;
}
snd_seq_cell_free(cell);
cell = NULL; /* to be sure */
- result += sizeof(struct snd_seq_event);
+ result += aligned_size;
}
if (err < 0) {
{
struct snd_seq_subscribers *subs;
int err, result = 0, num_ev = 0;
- struct snd_seq_event event_saved;
struct snd_seq_client_port *src_port;
+ union __snd_seq_event event_saved;
+ size_t saved_size;
struct snd_seq_port_subs_info *grp;
src_port = snd_seq_port_use_ptr(client, event->source.port);
if (src_port == NULL)
return -EINVAL; /* invalid source port */
/* save original event record */
- event_saved = *event;
+ saved_size = snd_seq_event_packet_size(event);
+ memcpy(&event_saved, event, saved_size);
grp = &src_port->c_src;
/* lock list */
}
num_ev++;
/* restore original event record */
- *event = event_saved;
+ memcpy(event, &event_saved, saved_size);
}
if (atomic)
read_unlock(&grp->list_lock);
else
up_read(&grp->list_mutex);
- *event = event_saved; /* restore */
- snd_seq_port_unlock(src_port);
+ memcpy(event, &event_saved, saved_size);
return (result < 0) ? result : num_ev;
}
return -EINVAL;
}
- if (cell->event.type == SNDRV_SEQ_EVENT_NOTE) {
+ if (!snd_seq_ev_is_ump(&cell->event) &&
+ cell->event.type == SNDRV_SEQ_EVENT_NOTE) {
/* NOTE event:
* the event cell is re-used as a NOTE-OFF event and
* enqueued again.
/* add the duration time */
switch (ev->flags & SNDRV_SEQ_TIME_STAMP_MASK) {
case SNDRV_SEQ_TIME_STAMP_TICK:
- ev->time.tick += ev->data.note.duration;
+ cell->event.time.tick += ev->data.note.duration;
break;
case SNDRV_SEQ_TIME_STAMP_REAL:
/* unit for duration is ms */
/* direct event processing without enqueued */
if (snd_seq_ev_is_direct(event)) {
- if (event->type == SNDRV_SEQ_EVENT_NOTE)
+ if (!snd_seq_ev_is_ump(event) &&
+ event->type == SNDRV_SEQ_EVENT_NOTE)
return -EINVAL; /* this event must be enqueued! */
return snd_seq_deliver_event(client, event, atomic, hop);
}
struct snd_seq_client *client = file->private_data;
int written = 0, len;
int err, handled;
- struct snd_seq_event event;
+ union __snd_seq_event __event;
+ struct snd_seq_event *ev = &__event.legacy;
if (!(snd_seq_file_flags(file) & SNDRV_SEQ_LFLG_OUTPUT))
return -ENXIO;
err = -EINVAL;
while (count >= sizeof(struct snd_seq_event)) {
/* Read in the event header from the user */
- len = sizeof(event);
- if (copy_from_user(&event, buf, len)) {
+ len = sizeof(struct snd_seq_event);
+ if (copy_from_user(ev, buf, len)) {
err = -EFAULT;
break;
}
- event.source.client = client->number; /* fill in client number */
+ /* read in the rest bytes for UMP events */
+ if (snd_seq_ev_is_ump(ev)) {
+ if (count < sizeof(struct snd_seq_ump_event))
+ break;
+ if (copy_from_user((char *)ev + len, buf + len,
+ sizeof(struct snd_seq_ump_event) - len)) {
+ err = -EFAULT;
+ break;
+ }
+ len = sizeof(struct snd_seq_ump_event);
+ }
+
+ ev->source.client = client->number; /* fill in client number */
/* Check for extension data length */
- if (check_event_type_and_length(&event)) {
+ if (check_event_type_and_length(ev)) {
err = -EINVAL;
break;
}
- /* check for special events */
- if (event.type == SNDRV_SEQ_EVENT_NONE)
- goto __skip_event;
- else if (snd_seq_ev_is_reserved(&event)) {
+ if (!event_is_compatible(client, ev)) {
err = -EINVAL;
break;
}
- if (snd_seq_ev_is_variable(&event)) {
- int extlen = event.data.ext.len & ~SNDRV_SEQ_EXT_MASK;
+ /* check for special events */
+ if (!snd_seq_ev_is_ump(ev)) {
+ if (ev->type == SNDRV_SEQ_EVENT_NONE)
+ goto __skip_event;
+ else if (snd_seq_ev_is_reserved(ev)) {
+ err = -EINVAL;
+ break;
+ }
+ }
+
+ if (snd_seq_ev_is_variable(ev)) {
+ int extlen = ev->data.ext.len & ~SNDRV_SEQ_EXT_MASK;
if ((size_t)(extlen + len) > count) {
/* back out, will get an error this time or next */
err = -EINVAL;
break;
}
/* set user space pointer */
- event.data.ext.len = extlen | SNDRV_SEQ_EXT_USRPTR;
- event.data.ext.ptr = (char __force *)buf
- + sizeof(struct snd_seq_event);
+ ev->data.ext.len = extlen | SNDRV_SEQ_EXT_USRPTR;
+ ev->data.ext.ptr = (char __force *)buf + len;
len += extlen; /* increment data length */
} else {
#ifdef CONFIG_COMPAT
- if (client->convert32 && snd_seq_ev_is_varusr(&event)) {
- void *ptr = (void __force *)compat_ptr(event.data.raw32.d[1]);
- event.data.ext.ptr = ptr;
- }
+ if (client->convert32 && snd_seq_ev_is_varusr(ev))
+ ev->data.ext.ptr =
+ (void __force *)compat_ptr(ev->data.raw32.d[1]);
#endif
}
/* ok, enqueue it */
- err = snd_seq_client_enqueue_event(client, &event, file,
+ err = snd_seq_client_enqueue_event(client, ev, file,
!(file->f_flags & O_NONBLOCK),
0, 0, &client->ioctl_mutex);
if (err < 0)
else
info->card = -1;
+ info->midi_version = cptr->midi_version;
memset(info->reserved, 0, sizeof(info->reserved));
}
if (client->type != client_info->type)
return -EINVAL;
+ /* check validity of midi_version field */
+ if (client->user_pversion >= SNDRV_PROTOCOL_VERSION(1, 0, 3) &&
+ client_info->midi_version > SNDRV_SEQ_CLIENT_UMP_MIDI_2_0)
+ return -EINVAL;
+
/* fill the info fields */
if (client_info->name[0])
strscpy(client->name, client_info->name, sizeof(client->name));
client->filter = client_info->filter;
client->event_lost = client_info->event_lost;
+ if (client->user_pversion >= SNDRV_PROTOCOL_VERSION(1, 0, 3))
+ client->midi_version = client_info->midi_version;
memcpy(client->event_filter, client_info->event_filter, 32);
return 0;
if (snd_BUG_ON(!ev))
return -EINVAL;
- if (ev->type == SNDRV_SEQ_EVENT_NONE)
- return 0; /* ignore this */
- if (ev->type == SNDRV_SEQ_EVENT_KERNEL_ERROR)
- return -EINVAL; /* quoted events can't be enqueued */
+ if (!snd_seq_ev_is_ump(ev)) {
+ if (ev->type == SNDRV_SEQ_EVENT_NONE)
+ return 0; /* ignore this */
+ if (ev->type == SNDRV_SEQ_EVENT_KERNEL_ERROR)
+ return -EINVAL; /* quoted events can't be enqueued */
+ }
/* fill in client number */
ev->source.client = client;
mutex_unlock(&client->ports_mutex);
}
+static const char *midi_version_string(unsigned int version)
+{
+ switch (version) {
+ case SNDRV_SEQ_CLIENT_LEGACY_MIDI:
+ return "Legacy";
+ case SNDRV_SEQ_CLIENT_UMP_MIDI_1_0:
+ return "UMP MIDI1";
+ case SNDRV_SEQ_CLIENT_UMP_MIDI_2_0:
+ return "UMP MIDI2";
+ default:
+ return "Unknown";
+ }
+}
/* exported to seq_info.c */
void snd_seq_info_clients_read(struct snd_info_entry *entry,
continue;
}
- snd_iprintf(buffer, "Client %3d : \"%s\" [%s]\n",
+ snd_iprintf(buffer, "Client %3d : \"%s\" [%s %s]\n",
c, client->name,
- client->type == USER_CLIENT ? "User" : "Kernel");
+ client->type == USER_CLIENT ? "User" : "Kernel",
+ midi_version_string(client->midi_version));
snd_seq_info_dump_ports(buffer, client);
if (snd_seq_write_pool_allocated(client)) {
snd_iprintf(buffer, " Output pool :\n");
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