mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-03 09:01:54 -05:00
example: add example external bluez devices
Add an example for how to monitor devices, and make nodes that can be used to stream bluetooth out of the daemon process.
This commit is contained in:
Wim Taymans
parent
e1cbdaed0b
commit
de51046fd5
2 changed files with 430 additions and 0 deletions
423
src/examples/bluez-session.c
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423
src/examples/bluez-session.c
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@ -0,0 +1,423 @@
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/* PipeWire
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*
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* Copyright © 2019 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <string.h>
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#include <stdio.h>
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#include <errno.h>
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#include <math.h>
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#include <time.h>
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#include "config.h"
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#include <spa/node/node.h>
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#include <spa/utils/hook.h>
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#include <spa/param/audio/format-utils.h>
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#include <spa/param/props.h>
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#include <spa/debug/dict.h>
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#include "pipewire/pipewire.h"
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#include "pipewire/private.h"
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#define NAME "media-session"
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struct impl;
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struct object;
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struct node {
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struct impl *impl;
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struct object *object;
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struct spa_list link;
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uint32_t id;
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struct spa_handle *handle;
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struct pw_proxy *proxy;
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struct spa_node *node;
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};
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struct object {
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struct impl *impl;
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struct spa_list link;
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uint32_t id;
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struct spa_handle *handle;
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struct pw_proxy *proxy;
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struct spa_device *device;
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struct spa_hook device_listener;
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struct spa_list node_list;
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};
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struct impl {
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struct timespec now;
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struct pw_main_loop *loop;
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struct pw_core *core;
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struct pw_remote *remote;
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struct spa_hook remote_listener;
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struct spa_handle *monitor_handle;
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struct spa_monitor *monitor;
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struct spa_hook monitor_listener;
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struct spa_list object_list;
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};
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static struct node *find_node(struct object *obj, uint32_t id)
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{
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struct node *node;
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spa_list_for_each(node, &obj->node_list, link) {
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if (node->id == id)
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return node;
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}
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return NULL;
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}
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static void update_node(struct object *obj, struct node *node,
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const struct spa_device_object_info *info)
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{
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pw_log_debug("update node %u", node->id);
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spa_debug_dict(0, info->props);
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}
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static struct node *create_node(struct object *obj, uint32_t id,
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const struct spa_device_object_info *info)
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{
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struct node *node;
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struct impl *impl = obj->impl;
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const struct spa_support *support;
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uint32_t n_support;
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struct spa_handle *handle;
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int res;
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void *iface;
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pw_log_debug("new node %u", id);
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if (info->type != SPA_TYPE_INTERFACE_Node)
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return NULL;
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support = pw_core_get_support(impl->core, &n_support);
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handle = calloc(1, spa_handle_factory_get_size(info->factory, NULL));
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if ((res = spa_handle_factory_init(info->factory,
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handle,
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info->props,
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support,
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n_support)) < 0) {
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pw_log_error("can't make factory instance: %d", res);
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goto free_handle;
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}
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if ((res = spa_handle_get_interface(handle, info->type, &iface)) < 0) {
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pw_log_error("can't get %d interface: %d", info->type, res);
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goto clean_handle;
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}
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node = calloc(1, sizeof(*node));
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if (node == NULL)
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goto clean_handle;
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node->impl = impl;
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node->object = obj;
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node->id = id;
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node->handle = handle;
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node->node = iface;
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node->proxy = pw_remote_export(impl->remote,
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info->type, pw_properties_new_dict(info->props), node->node, 0);
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if (node->proxy == NULL)
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goto clean_node;
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spa_list_append(&obj->node_list, &node->link);
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update_node(obj, node, info);
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return node;
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clean_node:
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free(node);
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clean_handle:
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spa_handle_clear(handle);
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free_handle:
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free(handle);
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return NULL;
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}
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static void remove_node(struct object *obj, struct node *node)
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{
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pw_log_debug("remove node %u", node->id);
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spa_list_remove(&node->link);
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pw_proxy_destroy(node->proxy);
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free(node->handle);
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free(node);
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}
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static void device_object_info(void *data, uint32_t id,
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const struct spa_device_object_info *info)
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{
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struct object *obj = data;
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struct node *node;
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node = find_node(obj, id);
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if (info == NULL) {
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if (node == NULL) {
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pw_log_warn("object %p: unknown node %u", obj, id);
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return;
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}
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remove_node(obj, node);
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} else if (node == NULL) {
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create_node(obj, id, info);
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} else {
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update_node(obj, node, info);
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}
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}
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static const struct spa_device_events device_events = {
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SPA_VERSION_DEVICE_EVENTS,
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.object_info = device_object_info
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};
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static struct object *find_object(struct impl *impl, uint32_t id)
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{
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struct object *obj;
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spa_list_for_each(obj, &impl->object_list, link) {
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if (obj->id == id)
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return obj;
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}
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return NULL;
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}
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static void update_object(struct impl *impl, struct object *obj,
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const struct spa_monitor_object_info *info)
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{
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pw_log_debug("update object %u", obj->id);
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spa_debug_dict(0, info->props);
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}
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static struct object *create_object(struct impl *impl, uint32_t id,
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const struct spa_monitor_object_info *info)
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{
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struct object *obj;
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const struct spa_support *support;
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uint32_t n_support;
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struct spa_handle *handle;
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int res;
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void *iface;
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pw_log_debug("new object %u", id);
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if (info->type != SPA_TYPE_INTERFACE_Device)
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return NULL;
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support = pw_core_get_support(impl->core, &n_support);
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handle = calloc(1, spa_handle_factory_get_size(info->factory, NULL));
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if ((res = spa_handle_factory_init(info->factory,
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handle,
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info->props,
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support,
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n_support)) < 0) {
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pw_log_error("can't make factory instance: %d", res);
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goto free_handle;
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}
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if ((res = spa_handle_get_interface(handle, info->type, &iface)) < 0) {
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pw_log_error("can't get %d interface: %d", info->type, res);
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goto clean_handle;
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}
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obj = calloc(1, sizeof(*obj));
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if (obj == NULL)
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goto clean_handle;
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obj->impl = impl;
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obj->id = id;
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obj->handle = handle;
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obj->device = iface;
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obj->proxy = pw_remote_export(impl->remote,
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info->type, pw_properties_new_dict(info->props), obj->device, 0);
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if (obj->proxy == NULL)
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goto clean_object;
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spa_list_init(&obj->node_list);
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spa_device_add_listener(obj->device,
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&obj->device_listener, &device_events, obj);
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spa_list_append(&impl->object_list, &obj->link);
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update_object(impl, obj, info);
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return obj;
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clean_object:
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free(obj);
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clean_handle:
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spa_handle_clear(handle);
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free_handle:
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free(handle);
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return NULL;
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}
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static void remove_object(struct impl *impl, struct object *obj)
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{
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pw_log_debug("remove object %u", obj->id);
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spa_list_remove(&obj->link);
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spa_hook_remove(&obj->device_listener);
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pw_proxy_destroy(obj->proxy);
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free(obj->handle);
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free(obj);
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}
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static int monitor_object_info(void *data, uint32_t id,
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const struct spa_monitor_object_info *info)
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{
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struct impl *impl = data;
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struct object *obj;
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obj = find_object(impl, id);
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if (info == NULL) {
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if (obj == NULL)
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return -ENODEV;
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remove_object(impl, obj);
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} else if (obj == NULL) {
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if ((obj = create_object(impl, id, info)) == NULL)
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return -ENOMEM;
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} else {
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update_object(impl, obj, info);
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}
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return 0;
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}
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static const struct spa_monitor_callbacks monitor_callbacks =
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{
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SPA_VERSION_MONITOR_CALLBACKS,
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.object_info = monitor_object_info,
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};
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static int start_monitor(struct impl *impl)
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{
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const struct spa_support *support;
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uint32_t n_support;
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struct spa_handle *handle;
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int res;
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void *iface;
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support = pw_core_get_support(impl->core, &n_support);
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handle = pw_load_spa_handle("bluez5/libspa-bluez5",
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"bluez5-monitor",
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NULL,
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n_support, support);
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if (handle == NULL)
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goto no_mem;
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if ((res = spa_handle_get_interface(handle, SPA_TYPE_INTERFACE_Monitor, &iface)) < 0) {
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pw_log_error("can't get MONITOR interface: %d", res);
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goto interface_failed;
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}
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impl->monitor_handle = handle;
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impl->monitor = iface;
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spa_monitor_set_callbacks(impl->monitor, &monitor_callbacks, impl);
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return 0;
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interface_failed:
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pw_unload_spa_handle(handle);
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return res;
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no_mem:
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return -ENOMEM;
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}
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static void on_state_changed(void *_data, enum pw_remote_state old, enum pw_remote_state state, const char *error)
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{
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struct impl *impl = _data;
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int res;
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switch (state) {
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case PW_REMOTE_STATE_ERROR:
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pw_log_error(NAME" %p: remote error: %s", impl, error);
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pw_main_loop_quit(impl->loop);
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break;
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case PW_REMOTE_STATE_CONNECTED:
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pw_log_info(NAME" %p: connected", impl);
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if ((res = start_monitor(impl)) < 0) {
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pw_log_debug("error starting monitor: %s", spa_strerror(res));
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pw_main_loop_quit(impl->loop);
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}
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break;
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case PW_REMOTE_STATE_UNCONNECTED:
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pw_log_info(NAME" %p: disconnected", impl);
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pw_main_loop_quit(impl->loop);
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break;
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default:
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printf("remote state: \"%s\"\n", pw_remote_state_as_string(state));
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break;
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}
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}
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static const struct pw_remote_events remote_events = {
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PW_VERSION_REMOTE_EVENTS,
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.state_changed = on_state_changed,
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};
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int main(int argc, char *argv[])
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{
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struct impl impl = { 0, };
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pw_init(&argc, &argv);
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impl.loop = pw_main_loop_new(NULL);
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impl.core = pw_core_new(pw_main_loop_get_loop(impl.loop), NULL, 0);
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impl.remote = pw_remote_new(impl.core, NULL, 0);
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pw_module_load(impl.core, "libpipewire-module-client-device", NULL, NULL, NULL, NULL);
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clock_gettime(CLOCK_MONOTONIC, &impl.now);
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spa_list_init(&impl.object_list);
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pw_remote_add_listener(impl.remote,
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&impl.remote_listener,
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&remote_events, &impl);
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if (pw_remote_connect(impl.remote) < 0)
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return -1;
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pw_main_loop_run(impl.loop);
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pw_core_destroy(impl.core);
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pw_main_loop_destroy(impl.loop);
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return 0;
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}
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@ -38,6 +38,13 @@ executable('media-session',
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dependencies : [pipewire_dep, mathlib],
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)
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executable('bluez-session',
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'bluez-session.c',
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c_args : [ '-D_GNU_SOURCE' ],
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install: false,
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dependencies : [pipewire_dep, mathlib],
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)
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if sdl_dep.found()
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executable('video-play',
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'video-play.c',
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