diff options
Diffstat (limited to 'src/modules/module-client-node.c')
| -rw-r--r-- | src/modules/module-client-node.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/src/modules/module-client-node.c b/src/modules/module-client-node.c new file mode 100644 index 0000000..4dc9bf8 --- /dev/null +++ b/src/modules/module-client-node.c @@ -0,0 +1,229 @@ +/* PipeWire + * + * Copyright © 2018 Wim Taymans + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include <string.h> +#include <stdio.h> +#include <errno.h> +#include <dlfcn.h> + +#include "config.h" + +#include <spa/utils/result.h> + +#include <pipewire/impl.h> + +#include "module-client-node/v0/client-node.h" +#include "module-client-node/client-node.h" + +/** \page page_module_client_node PipeWire Module: Client Node + */ + +#define NAME "client-node" + +PW_LOG_TOPIC(mod_topic, "mod." NAME); +#define PW_LOG_TOPIC_DEFAULT mod_topic + +static const struct spa_dict_item module_props[] = { + { PW_KEY_MODULE_AUTHOR, "Wim Taymans <wim.taymans@gmail.com>" }, + { PW_KEY_MODULE_DESCRIPTION, "Allow clients to create and control remote nodes" }, + { PW_KEY_MODULE_VERSION, PACKAGE_VERSION }, +}; + +struct pw_proxy *pw_core_node_export(struct pw_core *core, + const char *type, const struct spa_dict *props, void *object, size_t user_data_size); +struct pw_proxy *pw_core_spa_node_export(struct pw_core *core, + const char *type, const struct spa_dict *props, void *object, size_t user_data_size); + +struct pw_protocol *pw_protocol_native_ext_client_node_init(struct pw_context *context); +struct pw_protocol *pw_protocol_native_ext_client_node0_init(struct pw_context *context); + +struct factory_data { + struct pw_impl_factory *factory; + struct spa_hook factory_listener; + + struct pw_impl_module *module; + struct spa_hook module_listener; + + struct pw_export_type export_node; + struct pw_export_type export_spanode; +}; + +static void *create_object(void *_data, + struct pw_resource *resource, + const char *type, + uint32_t version, + struct pw_properties *properties, + uint32_t new_id) +{ + void *result; + struct pw_resource *node_resource; + struct pw_impl_client *client; + int res; + + if (resource == NULL) { + res = -EINVAL; + goto error_exit; + } + + client = pw_resource_get_client(resource); + node_resource = pw_resource_new(client, new_id, PW_PERM_ALL, type, version, 0); + if (node_resource == NULL) { + res = -errno; + goto error_resource; + } + + if (version == 0) { + result = pw_impl_client_node0_new(node_resource, properties); + } else { + result = pw_impl_client_node_new(node_resource, properties, true); + } + if (result == NULL) { + res = -errno; + goto error_node; + } + return result; + +error_resource: + pw_log_error("can't create resource: %s", spa_strerror(res)); + pw_resource_errorf_id(resource, new_id, res, "can't create resource: %s", spa_strerror(res)); + goto error_exit; +error_node: + pw_log_error("can't create node: %s", spa_strerror(res)); + pw_resource_errorf_id(resource, new_id, res, "can't create node: %s", spa_strerror(res)); + goto error_exit; +error_exit: + errno = -res; + return NULL; +} + +static const struct pw_impl_factory_implementation impl_factory = { + PW_VERSION_IMPL_FACTORY_IMPLEMENTATION, + .create_object = create_object, +}; + +static void factory_destroy(void *data) +{ + struct factory_data *d = data; + spa_hook_remove(&d->factory_listener); + d->factory = NULL; + if (d->module) + pw_impl_module_destroy(d->module); +} + +static const struct pw_impl_factory_events factory_events = { + PW_VERSION_IMPL_FACTORY_EVENTS, + .destroy = factory_destroy, +}; + +static void module_destroy(void *data) +{ + struct factory_data *d = data; + + spa_hook_remove(&d->module_listener); + spa_list_remove(&d->export_node.link); + spa_list_remove(&d->export_spanode.link); + + d->module = NULL; + if (d->factory) + pw_impl_factory_destroy(d->factory); +} + +static void module_registered(void *data) +{ + struct factory_data *d = data; + struct pw_impl_module *module = d->module; + struct pw_impl_factory *factory = d->factory; + struct spa_dict_item items[1]; + char id[16]; + int res; + + snprintf(id, sizeof(id), "%d", pw_global_get_id(pw_impl_module_get_global(module))); + items[0] = SPA_DICT_ITEM_INIT(PW_KEY_MODULE_ID, id); + pw_impl_factory_update_properties(factory, &SPA_DICT_INIT(items, 1)); + + if ((res = pw_impl_factory_register(factory, NULL)) < 0) { + pw_log_error("%p: can't register factory: %s", factory, spa_strerror(res)); + } +} + +static const struct pw_impl_module_events module_events = { + PW_VERSION_IMPL_MODULE_EVENTS, + .destroy = module_destroy, + .registered = module_registered, +}; + +SPA_EXPORT +int pipewire__module_init(struct pw_impl_module *module, const char *args) +{ + struct pw_context *context = pw_impl_module_get_context(module); + struct pw_impl_factory *factory; + struct factory_data *data; + int res; + + PW_LOG_TOPIC_INIT(mod_topic); + + factory = pw_context_create_factory(context, + "client-node", + PW_TYPE_INTERFACE_ClientNode, + PW_VERSION_CLIENT_NODE, + NULL, + sizeof(*data)); + if (factory == NULL) + return -errno; + + data = pw_impl_factory_get_user_data(factory); + data->factory = factory; + data->module = module; + + pw_log_debug("module %p: new", module); + + pw_impl_factory_set_implementation(factory, + &impl_factory, + data); + + data->export_node.type = PW_TYPE_INTERFACE_Node; + data->export_node.func = pw_core_node_export; + if ((res = pw_context_register_export_type(context, &data->export_node)) < 0) + goto error; + + data->export_spanode.type = SPA_TYPE_INTERFACE_Node; + data->export_spanode.func = pw_core_spa_node_export; + if ((res = pw_context_register_export_type(context, &data->export_spanode)) < 0) + goto error_remove; + + pw_protocol_native_ext_client_node_init(context); + pw_protocol_native_ext_client_node0_init(context); + + pw_impl_factory_add_listener(factory, &data->factory_listener, &factory_events, data); + pw_impl_module_add_listener(module, &data->module_listener, &module_events, data); + + pw_impl_module_update_properties(module, &SPA_DICT_INIT_ARRAY(module_props)); + + return 0; +error_remove: + spa_list_remove(&data->export_node.link); +error: + pw_impl_factory_destroy(data->factory); + return res; +} |