From 7a46c07230b8d8108c0e8e80df4522d0ac116538 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:28:17 +0200 Subject: Adding upstream version 0.3.65. Signed-off-by: Daniel Baumann --- src/modules/spa/module-device-factory.c | 281 ++++++++++++++++++++++++++++++++ 1 file changed, 281 insertions(+) create mode 100644 src/modules/spa/module-device-factory.c (limited to 'src/modules/spa/module-device-factory.c') diff --git a/src/modules/spa/module-device-factory.c b/src/modules/spa/module-device-factory.c new file mode 100644 index 0000000..fd712a2 --- /dev/null +++ b/src/modules/spa/module-device-factory.c @@ -0,0 +1,281 @@ +/* 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 +#include +#include +#include + +#include "config.h" + +#include + +#include "pipewire/impl.h" + +#include "spa-device.h" + +#define NAME "spa-device-factory" + +PW_LOG_TOPIC_STATIC(mod_topic, "mod." NAME); +#define PW_LOG_TOPIC_DEFAULT mod_topic + +#define FACTORY_USAGE SPA_KEY_FACTORY_NAME"= " \ + "["SPA_KEY_LIBRARY_NAME"=]" + +static const struct spa_dict_item module_props[] = { + { PW_KEY_MODULE_AUTHOR, "Wim Taymans " }, + { PW_KEY_MODULE_DESCRIPTION, "Provide a factory to make SPA devices" }, + { PW_KEY_MODULE_VERSION, PACKAGE_VERSION }, +}; + +struct factory_data { + struct pw_context *context; + + struct pw_impl_module *module; + struct spa_hook module_listener; + + struct pw_impl_factory *factory; + struct spa_hook factory_listener; + + struct spa_list device_list; +}; + +struct device_data { + struct spa_list link; + struct pw_impl_device *device; + struct spa_hook device_listener; + struct spa_hook resource_listener; +}; + +static void resource_destroy(void *data) +{ + struct device_data *nd = data; + pw_log_debug("device %p", nd); + spa_hook_remove(&nd->resource_listener); + if (nd->device) + pw_impl_device_destroy(nd->device); +} + +static const struct pw_resource_events resource_events = { + PW_VERSION_RESOURCE_EVENTS, + .destroy = resource_destroy +}; + +static void device_destroy(void *data) +{ + struct device_data *nd = data; + spa_list_remove(&nd->link); + spa_hook_remove(&nd->device_listener); + nd->device = NULL; +} + +static const struct pw_impl_device_events device_events = { + PW_VERSION_IMPL_DEVICE_EVENTS, + .destroy = device_destroy, +}; + +static void *create_object(void *_data, + struct pw_resource *resource, + const char *type, + uint32_t version, + struct pw_properties *properties, + uint32_t new_id) +{ + struct factory_data *data = _data; + struct pw_context *context = data->context; + struct pw_impl_device *device; + const char *str; + char *factory_name = NULL; + struct device_data *nd; + struct pw_impl_client *client; + int res; + + if (properties == NULL) + goto error_properties; + + if ((str = pw_properties_get(properties, SPA_KEY_FACTORY_NAME)) == NULL) + goto error_properties; + + if ((factory_name = strdup(str)) == NULL) + goto error_properties; + + pw_properties_setf(properties, PW_KEY_FACTORY_ID, "%d", + pw_global_get_id(pw_impl_factory_get_global(data->factory))); + + client = resource ? pw_resource_get_client(resource) : NULL; + + if (client) { + pw_properties_setf(properties, PW_KEY_CLIENT_ID, "%d", + pw_global_get_id(pw_impl_client_get_global(client))); + } + + device = pw_spa_device_load(context, + factory_name, + 0, + properties, + sizeof(struct device_data)); + if (device == NULL) { + res = -errno; + goto error_device; + } + + nd = pw_spa_device_get_user_data(device); + nd->device = device; + spa_list_append(&data->device_list, &nd->link); + + pw_impl_device_add_listener(device, &nd->device_listener, &device_events, nd); + + if (client) { + struct pw_resource *bound_resource; + + res = pw_global_bind(pw_impl_device_get_global(device), + client, + PW_PERM_ALL, version, + new_id); + if (res < 0) + goto error_bind; + + if ((bound_resource = pw_impl_client_find_resource(client, new_id)) == NULL) + goto error_bind; + + pw_resource_add_listener(bound_resource, &nd->resource_listener, &resource_events, nd); + } + free(factory_name); + return device; + +error_properties: + res = -EINVAL; + pw_resource_errorf_id(resource, new_id, res, "usage: "FACTORY_USAGE); + goto error_exit_cleanup; +error_device: + pw_resource_errorf_id(resource, new_id, res, + "can't create device %s: %s", factory_name, + spa_strerror(res)); + goto error_exit; +error_bind: + pw_resource_errorf_id(resource, new_id, res, "can't bind device"); + pw_impl_device_destroy(device); + goto error_exit; + +error_exit_cleanup: + pw_properties_free(properties); +error_exit: + free(factory_name); + errno = -res; + return NULL; +} + +static const struct pw_impl_factory_implementation factory_impl = { + PW_VERSION_IMPL_FACTORY_IMPLEMENTATION, + .create_object = create_object, +}; + +static void factory_destroy(void *data) +{ + struct factory_data *d = data; + struct device_data *nd; + + spa_hook_remove(&d->factory_listener); + + spa_list_consume(nd, &d->device_list, link) + pw_impl_device_destroy(nd->device); + + 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); + 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; + + PW_LOG_TOPIC_INIT(mod_topic); + + factory = pw_context_create_factory(context, + "spa-device-factory", + PW_TYPE_INTERFACE_Device, + PW_VERSION_DEVICE, + NULL, + sizeof(*data)); + if (factory == NULL) + return -errno; + + data = pw_impl_factory_get_user_data(factory); + data->factory = factory; + data->module = module; + data->context = context; + spa_list_init(&data->device_list); + + pw_impl_factory_add_listener(factory, &data->factory_listener, &factory_events, data); + pw_impl_factory_set_implementation(factory, &factory_impl, data); + + pw_log_debug("module %p: new", module); + pw_impl_module_update_properties(module, &SPA_DICT_INIT_ARRAY(module_props)); + + pw_impl_module_add_listener(module, &data->module_listener, &module_events, data); + + return 0; +} -- cgit v1.2.3