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doc: move modules around to add to docs
This commit is contained in:
Wim Taymans
parent
636c5373c7
commit
5765ac61ab
6 changed files with 41 additions and 40 deletions
265
src/modules/module-spa-device-factory.c
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265
src/modules/module-spa-device-factory.c
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/* PipeWire */
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/* SPDX-FileCopyrightText: Copyright © 2018 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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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 <dlfcn.h>
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#include "config.h"
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#include <spa/utils/result.h>
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#include "pipewire/impl.h"
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#include "spa/spa-device.h"
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/** \page page_module_spa_device_factory SPA Device factory
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*
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* Provide a factory to create SPA devices.
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*/
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#define NAME "spa-device-factory"
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PW_LOG_TOPIC_STATIC(mod_topic, "mod." NAME);
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#define PW_LOG_TOPIC_DEFAULT mod_topic
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#define FACTORY_USAGE SPA_KEY_FACTORY_NAME"=<factory-name> " \
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"["SPA_KEY_LIBRARY_NAME"=<library-name>]"
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static const struct spa_dict_item module_props[] = {
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{ PW_KEY_MODULE_AUTHOR, "Wim Taymans <wim.taymans@gmail.com>" },
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{ PW_KEY_MODULE_DESCRIPTION, "Provide a factory to make SPA devices" },
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{ PW_KEY_MODULE_VERSION, PACKAGE_VERSION },
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};
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struct factory_data {
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struct pw_context *context;
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struct pw_impl_module *module;
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struct spa_hook module_listener;
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struct pw_impl_factory *factory;
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struct spa_hook factory_listener;
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struct spa_list device_list;
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};
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struct device_data {
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struct spa_list link;
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struct pw_impl_device *device;
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struct spa_hook device_listener;
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struct spa_hook resource_listener;
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};
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static void resource_destroy(void *data)
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{
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struct device_data *nd = data;
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pw_log_debug("device %p", nd);
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spa_hook_remove(&nd->resource_listener);
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if (nd->device)
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pw_impl_device_destroy(nd->device);
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}
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static const struct pw_resource_events resource_events = {
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PW_VERSION_RESOURCE_EVENTS,
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.destroy = resource_destroy
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};
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static void device_destroy(void *data)
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{
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struct device_data *nd = data;
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spa_list_remove(&nd->link);
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spa_hook_remove(&nd->device_listener);
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nd->device = NULL;
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}
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static const struct pw_impl_device_events device_events = {
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PW_VERSION_IMPL_DEVICE_EVENTS,
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.destroy = device_destroy,
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};
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static void *create_object(void *_data,
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struct pw_resource *resource,
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const char *type,
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uint32_t version,
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struct pw_properties *properties,
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uint32_t new_id)
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{
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struct factory_data *data = _data;
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struct pw_context *context = data->context;
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struct pw_impl_device *device;
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const char *str;
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char *factory_name = NULL;
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struct device_data *nd;
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struct pw_impl_client *client;
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int res;
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if (properties == NULL)
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goto error_properties;
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if ((str = pw_properties_get(properties, SPA_KEY_FACTORY_NAME)) == NULL)
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goto error_properties;
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if ((factory_name = strdup(str)) == NULL)
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goto error_properties;
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pw_properties_setf(properties, PW_KEY_FACTORY_ID, "%d",
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pw_global_get_id(pw_impl_factory_get_global(data->factory)));
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client = resource ? pw_resource_get_client(resource) : NULL;
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if (client) {
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pw_properties_setf(properties, PW_KEY_CLIENT_ID, "%d",
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pw_global_get_id(pw_impl_client_get_global(client)));
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}
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device = pw_spa_device_load(context,
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factory_name,
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0,
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properties,
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sizeof(struct device_data));
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if (device == NULL) {
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res = -errno;
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goto error_device;
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}
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nd = pw_spa_device_get_user_data(device);
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nd->device = device;
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spa_list_append(&data->device_list, &nd->link);
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pw_impl_device_add_listener(device, &nd->device_listener, &device_events, nd);
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if (client) {
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struct pw_resource *bound_resource;
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res = pw_global_bind(pw_impl_device_get_global(device),
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client,
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PW_PERM_ALL, version,
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new_id);
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if (res < 0)
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goto error_bind;
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if ((bound_resource = pw_impl_client_find_resource(client, new_id)) == NULL)
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goto error_bind;
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pw_resource_add_listener(bound_resource, &nd->resource_listener, &resource_events, nd);
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}
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free(factory_name);
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return device;
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error_properties:
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res = -EINVAL;
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pw_resource_errorf_id(resource, new_id, res, "usage: "FACTORY_USAGE);
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goto error_exit_cleanup;
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error_device:
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pw_resource_errorf_id(resource, new_id, res,
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"can't create device %s: %s", factory_name,
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spa_strerror(res));
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goto error_exit;
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error_bind:
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pw_resource_errorf_id(resource, new_id, res, "can't bind device");
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pw_impl_device_destroy(device);
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goto error_exit;
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error_exit_cleanup:
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pw_properties_free(properties);
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error_exit:
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free(factory_name);
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errno = -res;
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return NULL;
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}
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static const struct pw_impl_factory_implementation factory_impl = {
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PW_VERSION_IMPL_FACTORY_IMPLEMENTATION,
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.create_object = create_object,
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};
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static void factory_destroy(void *data)
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{
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struct factory_data *d = data;
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struct device_data *nd;
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spa_hook_remove(&d->factory_listener);
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spa_list_consume(nd, &d->device_list, link)
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pw_impl_device_destroy(nd->device);
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d->factory = NULL;
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if (d->module)
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pw_impl_module_destroy(d->module);
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}
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static const struct pw_impl_factory_events factory_events = {
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PW_VERSION_IMPL_FACTORY_EVENTS,
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.destroy = factory_destroy,
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};
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static void module_destroy(void *data)
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{
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struct factory_data *d = data;
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spa_hook_remove(&d->module_listener);
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d->module = NULL;
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if (d->factory)
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pw_impl_factory_destroy(d->factory);
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}
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static void module_registered(void *data)
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{
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struct factory_data *d = data;
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struct pw_impl_module *module = d->module;
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struct pw_impl_factory *factory = d->factory;
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struct spa_dict_item items[1];
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char id[16];
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int res;
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snprintf(id, sizeof(id), "%d", pw_global_get_id(pw_impl_module_get_global(module)));
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items[0] = SPA_DICT_ITEM_INIT(PW_KEY_MODULE_ID, id);
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pw_impl_factory_update_properties(factory, &SPA_DICT_INIT(items, 1));
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if ((res = pw_impl_factory_register(factory, NULL)) < 0) {
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pw_log_error("%p: can't register factory: %s", factory, spa_strerror(res));
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}
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}
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static const struct pw_impl_module_events module_events = {
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PW_VERSION_IMPL_MODULE_EVENTS,
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.destroy = module_destroy,
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.registered = module_registered,
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};
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SPA_EXPORT
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int pipewire__module_init(struct pw_impl_module *module, const char *args)
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{
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struct pw_context *context = pw_impl_module_get_context(module);
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struct pw_impl_factory *factory;
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struct factory_data *data;
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PW_LOG_TOPIC_INIT(mod_topic);
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factory = pw_context_create_factory(context,
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"spa-device-factory",
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PW_TYPE_INTERFACE_Device,
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PW_VERSION_DEVICE,
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NULL,
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sizeof(*data));
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if (factory == NULL)
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return -errno;
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data = pw_impl_factory_get_user_data(factory);
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data->factory = factory;
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data->module = module;
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data->context = context;
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spa_list_init(&data->device_list);
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pw_impl_factory_add_listener(factory, &data->factory_listener, &factory_events, data);
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pw_impl_factory_set_implementation(factory, &factory_impl, data);
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pw_log_debug("module %p: new", module);
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pw_impl_module_update_properties(module, &SPA_DICT_INIT_ARRAY(module_props));
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pw_impl_module_add_listener(module, &data->module_listener, &module_events, data);
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return 0;
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}
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