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pipewire/pinos/modules/spa/spa-alsa-monitor.c
Wim Taymans 3f4ccaaea2 More hacking 
Add connection message for PORT_COMMAND
Add rtkit support to ask for realtime priority
work on stream states and improve negotiation
Rework of port linking works, keep separate state for realtime threads
and use message passing to update the state.
Don't try to link nodes that are removed.
Open the device in the ALSA monitor to detect source or sink
Implement send_command as async methods on the plugins, use async
replies to sync start and stop.
Work on alsa sink.
Implement async PAUSE/START on v4l2 src. move the STREAMON/OFF calls to
the mainloop because they have high latency, add the poll descriptors
from the data loop.
2016-10-28 16:56:33 +02:00

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/* Pinos
* Copyright (C) 2015 Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <dlfcn.h>
#include <errno.h>
#include <poll.h>
#include <string.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>
#include <gio/gio.h>
#include <spa/include/spa/node.h>
#include <spa/include/spa/monitor.h>
#include "spa-alsa-monitor.h"
#define PINOS_SPA_ALSA_MONITOR_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), PINOS_TYPE_SPA_ALSA_MONITOR, PinosSpaALSAMonitorPrivate))
typedef struct {
uint32_t node;
uint32_t clock;
} URI;
struct _PinosSpaALSAMonitorPrivate
{
PinosDaemon *daemon;
SpaHandle *handle;
SpaMonitor *monitor;
URI uri;
GHashTable *nodes;
};
enum
{
PROP_0,
PROP_DAEMON,
PROP_MONITOR,
};
G_DEFINE_TYPE (PinosSpaALSAMonitor, pinos_spa_alsa_monitor, G_TYPE_OBJECT);
static SpaResult
make_handle (PinosDaemon *daemon, SpaHandle **handle, const char *lib, const char *name, const SpaDict *info)
{
SpaResult res;
void *hnd, *state = NULL;
SpaEnumHandleFactoryFunc enum_func;
if ((hnd = dlopen (lib, RTLD_NOW)) == NULL) {
g_error ("can't load %s: %s", lib, dlerror());
return SPA_RESULT_ERROR;
}
if ((enum_func = dlsym (hnd, "spa_enum_handle_factory")) == NULL) {
g_error ("can't find enum function");
return SPA_RESULT_ERROR;
}
while (true) {
const SpaHandleFactory *factory;
if ((res = enum_func (&factory, &state)) < 0) {
if (res != SPA_RESULT_ENUM_END)
g_error ("can't enumerate factories: %d", res);
break;
}
if (strcmp (factory->name, name))
continue;
*handle = g_malloc0 (factory->size);
if ((res = spa_handle_factory_init (factory, *handle, info, daemon->support, daemon->n_support)) < 0) {
g_error ("can't make factory instance: %d", res);
return res;
}
return SPA_RESULT_OK;
}
return SPA_RESULT_ERROR;
}
static void
add_item (PinosSpaALSAMonitor *this, SpaMonitorItem *item)
{
PinosSpaALSAMonitorPrivate *priv = this->priv;
SpaResult res;
SpaHandle *handle;
PinosNode *node;
void *node_iface, *clock_iface;
PinosProperties *props = NULL;
g_debug ("alsa-monitor %p: add: \"%s\" (%s)", this, item->name, item->id);
handle = calloc (1, item->factory->size);
if ((res = spa_handle_factory_init (item->factory,
handle,
item->info,
priv->daemon->support,
priv->daemon->n_support)) < 0) {
g_error ("can't make factory instance: %d", res);
return;
}
if ((res = spa_handle_get_interface (handle, priv->uri.node, &node_iface)) < 0) {
g_error ("can't get NODE interface: %d", res);
return;
}
if ((res = spa_handle_get_interface (handle, priv->uri.clock, &clock_iface)) < 0) {
g_debug ("can't get CLOCK interface: %d", res);
clock_iface = NULL;
}
if (item->info) {
unsigned int i;
props = pinos_properties_new (NULL, NULL);
for (i = 0; i < item->info->n_items; i++)
pinos_properties_set (props,
item->info->items[i].key,
item->info->items[i].value);
}
node = g_object_new (PINOS_TYPE_NODE,
"daemon", priv->daemon,
"name", item->factory->name,
"node", node_iface,
"clock", clock_iface,
"properties", props,
NULL);
g_hash_table_insert (priv->nodes, g_strdup (item->id), node);
}
static void
remove_item (PinosSpaALSAMonitor *this, SpaMonitorItem *item)
{
PinosSpaALSAMonitorPrivate *priv = this->priv;
PinosNode *node;
g_debug ("alsa-monitor %p: remove: \"%s\" (%s)", this, item->name, item->id);
node = g_hash_table_lookup (priv->nodes, item->id);
if (node) {
pinos_node_remove (node);
g_hash_table_remove (priv->nodes, item->id);
}
}
static void
on_monitor_event (SpaMonitor *monitor,
SpaMonitorEvent *event,
void *user_data)
{
PinosSpaALSAMonitor *this = user_data;
switch (event->type) {
case SPA_MONITOR_EVENT_TYPE_ADDED:
{
SpaMonitorItem *item = (SpaMonitorItem *) event;
add_item (this, item);
break;
}
case SPA_MONITOR_EVENT_TYPE_REMOVED:
{
SpaMonitorItem *item = (SpaMonitorItem *) event;
remove_item (this, item);
}
case SPA_MONITOR_EVENT_TYPE_CHANGED:
{
SpaMonitorItem *item = (SpaMonitorItem *) event;
g_debug ("alsa-monitor %p: changed: \"%s\"", this, item->name);
break;
}
default:
break;
}
}
static void
monitor_constructed (GObject * object)
{
PinosSpaALSAMonitor *this = PINOS_SPA_ALSA_MONITOR (object);
PinosSpaALSAMonitorPrivate *priv = this->priv;
SpaResult res;
void *state = NULL;
g_debug ("spa-monitor %p: constructed", this);
G_OBJECT_CLASS (pinos_spa_alsa_monitor_parent_class)->constructed (object);
priv->uri.node = spa_id_map_get_id (priv->daemon->map, SPA_NODE_URI);
priv->uri.clock = spa_id_map_get_id (priv->daemon->map, SPA_CLOCK_URI);
while (TRUE) {
SpaMonitorItem *item;
if ((res = spa_monitor_enum_items (priv->monitor, &item, &state)) < 0) {
if (res != SPA_RESULT_ENUM_END)
g_debug ("spa_monitor_enum_items: got error %d\n", res);
break;
}
add_item (this, item);
}
spa_monitor_set_event_callback (priv->monitor, on_monitor_event, this);
}
static void
monitor_get_property (GObject *_object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
PinosSpaALSAMonitor *this = PINOS_SPA_ALSA_MONITOR (_object);
PinosSpaALSAMonitorPrivate *priv = this->priv;
switch (prop_id) {
case PROP_DAEMON:
g_value_set_object (value, priv->daemon);
break;
case PROP_MONITOR:
g_value_set_pointer (value, priv->monitor);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (this, prop_id, pspec);
break;
}
}
static void
monitor_set_property (GObject *_object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
PinosSpaALSAMonitor *this = PINOS_SPA_ALSA_MONITOR (_object);
PinosSpaALSAMonitorPrivate *priv = this->priv;
switch (prop_id) {
case PROP_DAEMON:
priv->daemon = g_value_dup_object (value);
break;
case PROP_MONITOR:
priv->monitor = g_value_get_pointer (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (this, prop_id, pspec);
break;
}
}
static void
monitor_finalize (GObject * object)
{
PinosSpaALSAMonitor *this = PINOS_SPA_ALSA_MONITOR (object);
PinosSpaALSAMonitorPrivate *priv = this->priv;
g_debug ("spa-monitor %p: dispose", this);
spa_handle_clear (priv->handle);
g_free (priv->handle);
g_hash_table_unref (priv->nodes);
G_OBJECT_CLASS (pinos_spa_alsa_monitor_parent_class)->finalize (object);
}
static void
pinos_spa_alsa_monitor_class_init (PinosSpaALSAMonitorClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (PinosSpaALSAMonitorPrivate));
gobject_class->constructed = monitor_constructed;
gobject_class->finalize = monitor_finalize;
gobject_class->set_property = monitor_set_property;
gobject_class->get_property = monitor_get_property;
g_object_class_install_property (gobject_class,
PROP_DAEMON,
g_param_spec_object ("daemon",
"Daemon",
"The Daemon",
PINOS_TYPE_DAEMON,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_MONITOR,
g_param_spec_pointer ("monitor",
"Monitor",
"The SPA monitor",
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
}
static void
pinos_spa_alsa_monitor_init (PinosSpaALSAMonitor * this)
{
PinosSpaALSAMonitorPrivate *priv = this->priv = PINOS_SPA_ALSA_MONITOR_GET_PRIVATE (this);
priv->nodes = g_hash_table_new_full (g_str_hash,
g_str_equal,
g_free,
g_object_unref);
}
GObject *
pinos_spa_alsa_monitor_new (PinosDaemon *daemon)
{
GObject *monitor;
SpaHandle *handle;
SpaResult res;
void *iface;
if ((res = make_handle (daemon, &handle,
"build/spa/plugins/alsa/libspa-alsa.so",
"alsa-monitor",
NULL)) < 0) {
g_error ("can't create alsa-monitor: %d", res);
return NULL;
}
if ((res = spa_handle_get_interface (handle,
spa_id_map_get_id (daemon->map, SPA_MONITOR_URI),
&iface)) < 0) {
g_free (handle);
g_error ("can't get MONITOR interface: %d", res);
return NULL;
}
monitor = g_object_new (PINOS_TYPE_SPA_ALSA_MONITOR,
"daemon", daemon,
"monitor", iface,
NULL);
return monitor;
}
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