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https://gitlab.freedesktop.org/pipewire/pipewire.git
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adapter: add adapter node
An adapter is like an audio-dsp node and client-stream combined. It allows tighter control with the device (for rate control and variable buffer sizes), software volume. The idea is to also implement the client-stream with this eventually.
This commit is contained in:
Wim Taymans
parent
0726a608df
commit
aba81455ff
5 changed files with 2783 additions and 0 deletions
259
src/modules/module-adapter.c
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259
src/modules/module-adapter.c
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/* PipeWire
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*
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* Copyright © 2018 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 <dlfcn.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 <pipewire/pipewire.h>
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#include "pipewire/private.h"
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#include "modules/spa/spa-node.h"
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#include "module-adapter/adapter.h"
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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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ADAPTER_USAGE
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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, "Manage adapter nodes" },
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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_factory *this;
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struct spa_list node_list;
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struct pw_module *module;
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struct spa_hook module_listener;
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};
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struct node_data {
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struct factory_data *data;
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struct spa_list link;
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struct pw_node *adapter;
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struct spa_hook adapter_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 node_data *nd = data;
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spa_hook_remove(&nd->resource_listener);
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if (nd->adapter)
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pw_node_destroy(nd->adapter);
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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 node_destroy(void *data)
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{
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struct node_data *nd = data;
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spa_list_remove(&nd->link);
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nd->adapter = NULL;
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}
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static const struct pw_node_events node_events = {
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PW_VERSION_NODE_EVENTS,
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.destroy = node_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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uint32_t 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 *d = _data;
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struct pw_client *client = pw_resource_get_client(resource);
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struct pw_node *adapter, *slave;
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const char *factory_name;
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int res;
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struct node_data *nd;
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struct pw_resource *bound_resource;
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if (resource == NULL)
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goto error_resource;
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if (properties == NULL)
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goto error_properties;
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factory_name = pw_properties_get(properties, SPA_KEY_FACTORY_NAME);
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if (factory_name == NULL)
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goto error_properties;
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slave = pw_spa_node_load(client->core,
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NULL,
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pw_factory_get_global(d->this),
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factory_name,
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"slave-node",
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PW_SPA_NODE_FLAG_ACTIVATE |
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PW_SPA_NODE_FLAG_NO_REGISTER,
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pw_properties_copy(properties), 0);
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if (slave == NULL)
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goto error_no_mem;
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adapter = pw_adapter_new(pw_module_get_core(d->module),
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slave,
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properties,
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sizeof(struct node_data));
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properties = NULL;
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if (adapter == NULL) {
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if (errno == ENOMEM)
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goto error_no_mem;
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else
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goto error_usage;
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}
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nd = pw_adapter_get_user_data(adapter);
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nd->data = d;
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nd->adapter = adapter;
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spa_list_append(&d->node_list, &nd->link);
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client = pw_resource_get_client(resource);
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pw_node_register(adapter, client, pw_module_get_global(d->module), NULL);
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pw_node_add_listener(adapter, &nd->adapter_listener, &node_events, nd);
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res = pw_global_bind(pw_node_get_global(adapter), client,
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PW_PERM_RWX, PW_VERSION_NODE_PROXY, new_id);
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if (res < 0)
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goto error_bind;
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if ((bound_resource = pw_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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pw_node_set_active(adapter, true);
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return adapter;
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error_resource:
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res = -EINVAL;
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pw_log_error("adapter needs a resource");
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goto error_cleanup;
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error_properties:
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res = -EINVAL;
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pw_log_error("factory %p: usage: " FACTORY_USAGE, d->this);
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pw_resource_error(resource, res, "usage: " FACTORY_USAGE);
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goto error_cleanup;
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error_no_mem:
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res = -errno;
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pw_log_error("can't create node: %m");
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pw_resource_error(resource, res, "can't create node: %s", spa_strerror(res));
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goto error_cleanup;
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error_usage:
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res = -EINVAL;
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pw_log_error("usage: "ADAPTER_USAGE);
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pw_resource_error(resource, res, "usage: "ADAPTER_USAGE);
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goto error_cleanup;
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error_bind:
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pw_resource_error(resource, res, "can't bind adapter node");
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goto error_cleanup;
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error_cleanup:
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if (properties)
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pw_properties_free(properties);
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errno = -res;
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return NULL;
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}
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static const struct pw_factory_implementation impl_factory = {
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PW_VERSION_FACTORY_IMPLEMENTATION,
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.create_object = create_object,
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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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struct node_data *nd, *t;
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spa_hook_remove(&d->module_listener);
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spa_list_for_each_safe(nd, t, &d->node_list, link)
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pw_node_destroy(nd->adapter);
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pw_factory_destroy(d->this);
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}
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static const struct pw_module_events module_events = {
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PW_VERSION_MODULE_EVENTS,
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.destroy = module_destroy,
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};
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static int module_init(struct pw_module *module, struct pw_properties *properties)
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{
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struct pw_core *core = pw_module_get_core(module);
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struct pw_factory *factory;
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struct factory_data *data;
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factory = pw_factory_new(core,
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"adapter",
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PW_TYPE_INTERFACE_Node,
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PW_VERSION_NODE_PROXY,
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pw_properties_new(
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PW_KEY_FACTORY_USAGE, FACTORY_USAGE,
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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_factory_get_user_data(factory);
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data->this = factory;
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data->module = module;
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spa_list_init(&data->node_list);
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pw_log_debug("module %p: new", module);
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pw_factory_set_implementation(factory,
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&impl_factory,
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data);
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pw_factory_register(factory, NULL, pw_module_get_global(module), NULL);
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pw_module_add_listener(module, &data->module_listener, &module_events, data);
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pw_module_update_properties(module, &SPA_DICT_INIT_ARRAY(module_props));
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return 0;
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}
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SPA_EXPORT
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int pipewire__module_init(struct pw_module *module, const char *args)
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{
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return module_init(module, NULL);
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}
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