Commit 6786b13f authored by Julian Bouzas's avatar Julian Bouzas

bluez: add new module to monitor bluetooth devices

parent aa07ec09
......@@ -61,6 +61,17 @@ shared_library(
dependencies : [wp_dep, pipewire_dep],
)
shared_library(
'wireplumber-module-pw-bluez',
[
'module-pw-bluez.c',
],
c_args : [common_c_args, '-DG_LOG_DOMAIN="m-pw-bluez"'],
install : true,
install_dir : wireplumber_module_dir,
dependencies : [wp_dep, pipewire_dep],
)
shared_library(
'wireplumber-module-pw-audio-softdsp-endpoint',
[
......
/* WirePlumber
*
* Copyright © 2019 Collabora Ltd.
* @author Julian Bouzas <julian.bouzas@collabora.com>
*
* SPDX-License-Identifier: MIT
*/
/**
* module-pw-bluez provides bluetooth device detection through pipewire
* and automatically creates pipewire audio nodes to play and capture audio
*/
#include <spa/utils/names.h>
#include <spa/monitor/monitor.h>
#include <pipewire/pipewire.h>
#include <wp/wp.h>
struct monitor {
struct spa_handle *handle;
struct spa_monitor *monitor;
struct spa_list device_list;
};
struct impl {
WpModule *module;
WpRemotePipewire *remote_pipewire;
/* The bluez monitor */
struct monitor monitor;
};
struct device {
struct impl *impl;
struct spa_list link;
uint32_t id;
struct pw_properties *props;
struct spa_handle *handle;
struct pw_proxy *proxy;
struct spa_device *device;
struct spa_hook device_listener;
struct spa_list node_list;
};
struct node {
struct impl *impl;
struct device *device;
struct spa_list link;
uint32_t id;
struct pw_properties *props;
struct pw_node *adapter;
struct pw_proxy *proxy;
};
static struct node *
create_node(struct impl *impl, struct device *dev, uint32_t id,
const struct spa_device_object_info *info)
{
struct node *node;
const char *str;
struct pw_properties *props = NULL;
struct pw_factory *factory = NULL;
struct pw_node *adapter = NULL;
struct pw_proxy *proxy = NULL;
/* Check if the type is a node */
if (info->type != SPA_TYPE_INTERFACE_Node)
return NULL;
/* Create the properties */
props = pw_properties_new_dict(info->props);
str = pw_properties_get(dev->props, SPA_KEY_DEVICE_DESCRIPTION);
if (str == NULL)
str = pw_properties_get(dev->props, SPA_KEY_DEVICE_NAME);
if (str == NULL)
str = pw_properties_get(dev->props, SPA_KEY_DEVICE_NICK);
if (str == NULL)
str = pw_properties_get(dev->props, SPA_KEY_DEVICE_ALIAS);
if (str == NULL)
str = "bluetooth-device";
pw_properties_setf(props, PW_KEY_NODE_NAME, "%s.%s", info->factory_name, str);
pw_properties_set(props, PW_KEY_NODE_DESCRIPTION, str);
pw_properties_set(props, "factory.name", info->factory_name);
/* Find the factory */
factory = wp_remote_pipewire_find_factory(impl->remote_pipewire, "adapter");
g_return_val_if_fail (factory, NULL);
/* Create the adapter */
adapter = pw_factory_create_object(factory, NULL, PW_TYPE_INTERFACE_Node,
PW_VERSION_NODE_PROXY, props, 0);
g_return_val_if_fail (adapter, NULL);
/* Create the proxy */
proxy = wp_remote_pipewire_export(impl->remote_pipewire,
PW_TYPE_INTERFACE_Node, props, adapter, 0);
g_return_val_if_fail (proxy, NULL);
/* Create the node */
node = g_slice_new0(struct node);
node->impl = impl;
node->device = dev;
node->id = id;
node->props = props;
node->adapter = adapter;
node->proxy = proxy;
/* Add the node to the list */
spa_list_append(&dev->node_list, &node->link);
return node;
}
static void
update_node(struct impl *impl, struct device *dev, struct node *node,
const struct spa_device_object_info *info)
{
/* Just update the properties */
pw_properties_update(node->props, info->props);
}
static void destroy_node(struct impl *impl, struct device *dev, struct node *node)
{
/* Remove the node from the list */
spa_list_remove(&node->link);
/* Destroy the proxy node */
pw_proxy_destroy(node->proxy);
/* Destroy the node */
g_slice_free (struct node, node);
}
static struct node *
find_node(struct device *dev, uint32_t id)
{
struct node *node;
/* Find the node in the list */
spa_list_for_each(node, &dev->node_list, link) {
if (node->id == id)
return node;
}
return NULL;
}
static void
device_object_info(void *data, uint32_t id,
const struct spa_device_object_info *info)
{
struct device *dev = data;
struct impl *impl = dev->impl;
struct node *node = NULL;
/* Find the node */
node = find_node(dev, id);
if (info) {
/* Just update the node if it already exits, otherwise create it */
if (node)
update_node(impl, dev, node, info);
else
create_node(impl, dev, id, info);
} else {
/* Just remove the node if it already exists */
if (node)
destroy_node(impl, dev, node);
}
}
static const struct spa_device_events device_events = {
SPA_VERSION_DEVICE_EVENTS,
.object_info = device_object_info
};
static struct device*
create_device(struct impl *impl, uint32_t id,
const struct spa_monitor_object_info *info) {
struct device *dev;
struct spa_handle *handle;
int res;
void *iface;
/* Check if the type is a device */
if (info->type != SPA_TYPE_INTERFACE_Device)
return NULL;
/* Load the device handle */
handle = (struct spa_handle *)wp_remote_pipewire_load_spa_handle (
impl->remote_pipewire, info->factory_name, info->props);
if (!handle)
return NULL;
/* Get the handle interface */
res = spa_handle_get_interface(handle, info->type, &iface);
if (res < 0) {
pw_unload_spa_handle(handle);
return NULL;
}
/* Create the device */
dev = g_slice_new0(struct device);
dev->impl = impl;
dev->id = id;
dev->handle = handle;
dev->device = iface;
dev->props = pw_properties_new_dict(info->props);
dev->proxy = wp_remote_pipewire_export (impl->remote_pipewire, info->type, dev->props, dev->device, 0);
if (!dev->proxy) {
pw_unload_spa_handle(handle);
return NULL;
}
spa_list_init(&dev->node_list);
/* Add device listener for events */
spa_device_add_listener(dev->device, &dev->device_listener, &device_events,
dev);
/* Add the device to the list */
spa_list_append(&impl->monitor.device_list, &dev->link);
return dev;
}
static void
update_device(struct impl *impl, struct device *dev,
const struct spa_monitor_object_info *info)
{
/* Update the properties of the device */
pw_properties_update(dev->props, info->props);
}
static void
destroy_device(struct impl *impl, struct device *dev)
{
/* Remove the device from the list */
spa_list_remove(&dev->link);
/* Remove the device listener */
spa_hook_remove(&dev->device_listener);
/* Destroy the device proxy */
pw_proxy_destroy(dev->proxy);
/* Unload the device handle */
pw_unload_spa_handle(dev->handle);
/* Destroy the object */
g_slice_free (struct device, dev);
}
static struct device *
find_device(struct impl *impl, uint32_t id)
{
struct device *dev;
/* Find the device in the list */
spa_list_for_each(dev, &impl->monitor.device_list, link) {
if (dev->id == id)
return dev;
}
return NULL;
}
static int
monitor_object_info(gpointer data, uint32_t id,
const struct spa_monitor_object_info *info)
{
struct impl *impl = data;
struct device *dev = NULL;
/* Find the device */
dev = find_device(impl, id);
if (info) {
/* Just update the device if it already exits, otherwise create it */
if (dev)
update_device(impl, dev, info);
else
if (!create_device(impl, id, info))
return -ENOMEM;
} else {
/* Just remove the device if it already exists, otherwise return error */
if (dev)
destroy_device(impl, dev);
else
return -ENODEV;
}
return 0;
}
static const struct spa_monitor_callbacks monitor_callbacks =
{
SPA_VERSION_MONITOR_CALLBACKS,
.object_info = monitor_object_info,
};
static void
start_monitor (WpRemotePipewire *remote, WpRemoteState state, gpointer data)
{
struct impl *impl = data;
struct spa_handle *handle;
int res;
void *iface;
/* Load the monitor handle */
handle = (struct spa_handle *)wp_remote_pipewire_load_spa_handle (
impl->remote_pipewire, SPA_NAME_API_BLUEZ5_MONITOR, NULL);
g_return_if_fail (handle);
/* Get the handle interface */
res = spa_handle_get_interface(handle, SPA_TYPE_INTERFACE_Monitor, &iface);
if (res < 0) {
g_critical ("module-pw-alsa-udev cannot get monitor interface");
pw_unload_spa_handle(handle);
return;
}
/* Init the monitor data */
impl->monitor.handle = handle;
impl->monitor.monitor = iface;
spa_list_init(&impl->monitor.device_list);
/* Set the monitor callbacks */
spa_monitor_set_callbacks(impl->monitor.monitor, &monitor_callbacks, impl);
}
static void
module_destroy (gpointer data)
{
struct impl *impl = data;
/* Set to NULL module and remote pipewire as we don't own the reference */
impl->module = NULL;
impl->remote_pipewire = NULL;
/* Clean up */
g_slice_free (struct impl, impl);
}
void
wireplumber__module_init (WpModule * module, WpCore * core, GVariant * args)
{
struct impl *impl;
WpRemotePipewire *rp;
/* Make sure the remote pipewire is valid */
rp = wp_core_get_global (core, WP_GLOBAL_REMOTE_PIPEWIRE);
if (!rp) {
g_critical ("module-pw-bluez cannot be loaded without a registered "
"WpRemotePipewire object");
return;
}
/* Create the module data */
impl = g_slice_new0(struct impl);
impl->module = module;
impl->remote_pipewire = rp;
/* Set destroy callback for impl */
wp_module_set_destroy_callback (module, module_destroy, impl);
/* Add the spa lib */
wp_remote_pipewire_add_spa_lib (rp, "api.bluez5.*", "bluez5/libspa-bluez5");
/* Start the monitor when the connected callback is triggered */
g_signal_connect(rp, "state-changed::connected", (GCallback)start_monitor, impl);
}
......@@ -24,6 +24,10 @@ load-module C libwireplumber-module-pw-alsa-udev {
"streams": <["Multimedia", "Navigation", "Communication", "Emergency"]>
}
# Monitors the bluetooth devices that are discovered via bluez
# and creates the endpoints for each one of them
load-module C libwireplumber-module-pw-bluez
# Monitors the Audio clients that are discovered via pipewire
# and creates simple-endpoints for each one of them
load-module C libwireplumber-module-pw-audio-client
......
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