722 lines
17 KiB
C
722 lines
17 KiB
C
/* 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <unistd.h>
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#include <limits.h>
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#include <stdio.h>
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#ifndef __FreeBSD__
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#include <sys/prctl.h>
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#endif
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#include <pwd.h>
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#include <errno.h>
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#include <dlfcn.h>
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#include <locale.h>
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#include <libintl.h>
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#include <spa/utils/names.h>
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#include <spa/utils/string.h>
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#include <spa/support/cpu.h>
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#include <spa/support/i18n.h>
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#include "pipewire.h"
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#include "private.h"
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#define MAX_SUPPORT 32
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#define SUPPORTLIB "support/libspa-support"
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static struct spa_i18n *_pipewire_i18n = NULL;
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struct plugin {
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struct spa_list link;
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char *filename;
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void *hnd;
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spa_handle_factory_enum_func_t enum_func;
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struct spa_list handles;
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int ref;
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};
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struct handle {
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struct spa_list link;
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struct plugin *plugin;
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char *factory_name;
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int ref;
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struct spa_handle handle SPA_ALIGNED(8);
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};
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struct registry {
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struct spa_list plugins;
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};
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struct support {
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char **categories;
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const char *plugin_dir;
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const char *support_lib;
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struct registry *registry;
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char *i18n_domain;
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struct spa_interface i18n_iface;
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struct spa_support support[MAX_SUPPORT];
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uint32_t n_support;
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unsigned int in_valgrind:1;
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};
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static struct registry global_registry;
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static struct support global_support;
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static struct plugin *
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find_plugin(struct registry *registry, const char *filename)
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{
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struct plugin *p;
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spa_list_for_each(p, ®istry->plugins, link) {
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if (spa_streq(p->filename, filename))
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return p;
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}
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return NULL;
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}
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static struct plugin *
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open_plugin(struct registry *registry,
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const char *path, const char *lib)
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{
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struct plugin *plugin;
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char *filename;
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void *hnd;
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spa_handle_factory_enum_func_t enum_func;
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int res;
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if ((filename = spa_aprintf("%s/%s.so", path, lib)) == NULL) {
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res = -errno;
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goto error_out;
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}
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if ((plugin = find_plugin(registry, filename)) != NULL) {
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free(filename);
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plugin->ref++;
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return plugin;
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}
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if ((hnd = dlopen(filename, RTLD_NOW)) == NULL) {
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res = -ENOENT;
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pw_log_debug("can't load %s: %s", filename, dlerror());
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goto error_free_filename;
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}
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if ((enum_func = dlsym(hnd, SPA_HANDLE_FACTORY_ENUM_FUNC_NAME)) == NULL) {
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res = -ENOSYS;
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pw_log_debug("can't find enum function: %s", dlerror());
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goto error_dlclose;
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}
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if ((plugin = calloc(1, sizeof(struct plugin))) == NULL) {
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res = -errno;
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goto error_dlclose;
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}
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pw_log_debug("loaded plugin:'%s'", filename);
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plugin->ref = 1;
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plugin->filename = filename;
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plugin->hnd = hnd;
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plugin->enum_func = enum_func;
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spa_list_init(&plugin->handles);
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spa_list_append(®istry->plugins, &plugin->link);
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return plugin;
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error_dlclose:
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dlclose(hnd);
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error_free_filename:
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free(filename);
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error_out:
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errno = -res;
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return NULL;
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}
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static void
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unref_plugin(struct plugin *plugin)
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{
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if (--plugin->ref == 0) {
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spa_list_remove(&plugin->link);
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pw_log_debug("unloaded plugin:'%s'", plugin->filename);
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if (!global_support.in_valgrind)
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dlclose(plugin->hnd);
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free(plugin->filename);
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free(plugin);
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}
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}
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static const struct spa_handle_factory *find_factory(struct plugin *plugin, const char *factory_name)
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{
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int res = -ENOENT;
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uint32_t index;
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const struct spa_handle_factory *factory;
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for (index = 0;;) {
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if ((res = plugin->enum_func(&factory, &index)) <= 0) {
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if (res == 0)
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break;
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goto out;
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}
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if (factory->version < 1) {
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pw_log_warn("factory version %d < 1 not supported",
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factory->version);
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continue;
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}
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if (spa_streq(factory->name, factory_name))
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return factory;
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}
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res = -ENOENT;
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out:
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pw_log_debug("can't find factory %s: %s", factory_name, spa_strerror(res));
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errno = -res;
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return NULL;
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}
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static void unref_handle(struct handle *handle)
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{
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if (--handle->ref == 0) {
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spa_list_remove(&handle->link);
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pw_log_debug("clear handle '%s'", handle->factory_name);
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spa_handle_clear(&handle->handle);
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unref_plugin(handle->plugin);
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free(handle->factory_name);
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free(handle);
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}
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}
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static void configure_debug(struct support *support, const char *str)
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{
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char **level;
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int n_tokens;
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level = pw_split_strv(str, ":", INT_MAX, &n_tokens);
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if (n_tokens > 0)
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pw_log_set_level(atoi(level[0]));
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if (n_tokens > 1)
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support->categories = pw_split_strv(level[1], ",", INT_MAX, &n_tokens);
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if (level)
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pw_free_strv(level);
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}
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SPA_EXPORT
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uint32_t pw_get_support(struct spa_support *support, uint32_t max_support)
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{
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uint32_t i, n = SPA_MIN(global_support.n_support, max_support);
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for (i = 0; i < n; i++)
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support[i] = global_support.support[i];
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return n;
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}
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SPA_EXPORT
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struct spa_handle *pw_load_spa_handle(const char *lib,
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const char *factory_name,
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const struct spa_dict *info,
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uint32_t n_support,
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const struct spa_support support[])
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{
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struct support *sup = &global_support;
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struct plugin *plugin;
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struct handle *handle;
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const struct spa_handle_factory *factory;
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int res;
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if (factory_name == NULL) {
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res = -EINVAL;
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goto error_out;
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}
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if (lib == NULL)
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lib = sup->support_lib;
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pw_log_debug("load lib:'%s' factory-name:'%s'", lib, factory_name);
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if ((plugin = open_plugin(sup->registry, sup->plugin_dir, lib)) == NULL) {
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res = -errno;
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goto error_out;
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}
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factory = find_factory(plugin, factory_name);
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if (factory == NULL) {
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res = -errno;
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goto error_unref_plugin;
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}
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handle = calloc(1, sizeof(struct handle) + spa_handle_factory_get_size(factory, info));
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if (handle == NULL) {
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res = -errno;
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goto error_unref_plugin;
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}
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if ((res = spa_handle_factory_init(factory,
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&handle->handle, info,
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support, n_support)) < 0) {
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pw_log_debug("can't make factory instance '%s': %d (%s)",
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factory_name, res, spa_strerror(res));
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goto error_free_handle;
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}
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handle->ref = 1;
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handle->plugin = plugin;
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handle->factory_name = strdup(factory_name);
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spa_list_append(&plugin->handles, &handle->link);
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return &handle->handle;
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error_free_handle:
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free(handle);
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error_unref_plugin:
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unref_plugin(plugin);
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error_out:
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errno = -res;
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return NULL;
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}
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static struct handle *find_handle(struct spa_handle *handle)
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{
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struct registry *registry = global_support.registry;
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struct plugin *p;
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struct handle *h;
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spa_list_for_each(p, ®istry->plugins, link) {
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spa_list_for_each(h, &p->handles, link) {
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if (&h->handle == handle)
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return h;
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}
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}
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return NULL;
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}
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SPA_EXPORT
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int pw_unload_spa_handle(struct spa_handle *handle)
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{
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struct handle *h;
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if ((h = find_handle(handle)) == NULL)
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return -ENOENT;
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unref_handle(h);
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return 0;
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}
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static void *add_interface(struct support *support,
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const char *factory_name,
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const char *type,
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const struct spa_dict *info)
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{
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struct spa_handle *handle;
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void *iface = NULL;
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int res = -ENOENT;
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handle = pw_load_spa_handle(support->support_lib,
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factory_name, info,
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support->n_support, support->support);
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if (handle == NULL ||
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(res = spa_handle_get_interface(handle, type, &iface)) < 0) {
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pw_log_error("can't get %s interface %d", type, res);
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} else {
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support->support[support->n_support++] =
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SPA_SUPPORT_INIT(type, iface);
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}
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return iface;
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}
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SPA_EXPORT
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int pw_set_domain(const char *domain)
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{
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struct support *support = &global_support;
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free(support->i18n_domain);
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if (domain == NULL)
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support->i18n_domain = NULL;
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else if ((support->i18n_domain = strdup(domain)) == NULL)
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return -errno;
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return 0;
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}
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SPA_EXPORT
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const char *pw_get_domain(void)
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{
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struct support *support = &global_support;
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return support->i18n_domain;
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}
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static const char *i18n_text(void *object, const char *msgid)
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{
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struct support *support = object;
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return dgettext(support->i18n_domain, msgid);
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}
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static const char *i18n_ntext(void *object, const char *msgid, const char *msgid_plural,
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unsigned long int n)
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{
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struct support *support = object;
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return dngettext(support->i18n_domain, msgid, msgid_plural, n);
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}
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static void init_i18n(struct support *support)
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{
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/* Load locale from the environment. */
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setlocale(LC_ALL, "");
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/* Set LC_NUMERIC to C so that floating point strings are consistently
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* formatted and parsed across locales. */
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setlocale(LC_NUMERIC, "C");
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bindtextdomain(GETTEXT_PACKAGE, LOCALEDIR);
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bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
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pw_set_domain(GETTEXT_PACKAGE);
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}
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static void *add_i18n(struct support *support)
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{
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static struct spa_i18n_methods i18n_methods = {
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SPA_VERSION_I18N_METHODS,
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.text = i18n_text,
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.ntext = i18n_ntext,
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};
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support->i18n_iface = SPA_INTERFACE_INIT(
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SPA_TYPE_INTERFACE_I18N,
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SPA_VERSION_I18N,
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&i18n_methods, support);
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_pipewire_i18n = (struct spa_i18n*) &support->i18n_iface;
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support->support[support->n_support++] =
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SPA_SUPPORT_INIT(SPA_TYPE_INTERFACE_I18N, _pipewire_i18n);
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return 0;
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}
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SPA_EXPORT
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const char *pw_gettext(const char *msgid)
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{
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return spa_i18n_text(_pipewire_i18n, msgid);
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}
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SPA_EXPORT
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const char *pw_ngettext(const char *msgid, const char *msgid_plural, unsigned long int n)
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{
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return spa_i18n_ntext(_pipewire_i18n, msgid, msgid_plural, n);
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}
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#ifdef HAVE_SYSTEMD
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static struct spa_log *load_journal_logger(struct support *support)
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{
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struct spa_handle *handle;
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void *iface = NULL;
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int res = -ENOENT;
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struct spa_dict info;
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struct spa_dict_item items[1];
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char level[32];
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uint32_t i;
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/* is the journal even available? */
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if (access("/run/systemd/journal/socket", F_OK) != 0)
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return NULL;
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snprintf(level, sizeof(level), "%d", pw_log_level);
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items[0] = SPA_DICT_ITEM_INIT(SPA_KEY_LOG_LEVEL, level);
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info = SPA_DICT_INIT(items, 1);
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handle = pw_load_spa_handle("support/libspa-journal",
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SPA_NAME_SUPPORT_LOG, &info,
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support->n_support, support->support);
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if (handle == NULL ||
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(res = spa_handle_get_interface(handle, SPA_TYPE_INTERFACE_Log, &iface)) < 0) {
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pw_log_error("can't get log interface %d", res);
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} else {
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/* look for an existing logger, and
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* replace it with the journal logger */
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for (i = 0; i < support->n_support; i++) {
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if (spa_streq(support->support[i].type, SPA_TYPE_INTERFACE_Log)) {
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support->support[i].data = iface;
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break;
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}
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}
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}
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return (struct spa_log *) iface;
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}
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#endif
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/** Initialize PipeWire
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*
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* \param argc pointer to argc
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* \param argv pointer to argv
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*
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* Initialize the PipeWire system, parse and modify any parameters given
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* by \a argc and \a argv and set up debugging.
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*
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* The environment variable \a PIPEWIRE_DEBUG
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*
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* \memberof pw_pipewire
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*/
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SPA_EXPORT
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void pw_init(int *argc, char **argv[])
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{
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const char *str;
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struct spa_dict_item items[5];
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uint32_t n_items;
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struct spa_dict info;
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struct support *support = &global_support;
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struct spa_log *log;
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char level[32];
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if (support->registry != NULL)
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return;
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if ((str = getenv("VALGRIND")))
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support->in_valgrind = pw_properties_parse_bool(str);
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if ((str = getenv("PIPEWIRE_DEBUG")))
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configure_debug(support, str);
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init_i18n(support);
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if ((str = getenv("SPA_PLUGIN_DIR")) == NULL)
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str = PLUGINDIR;
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support->plugin_dir = str;
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if ((str = getenv("SPA_SUPPORT_LIB")) == NULL)
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str = SUPPORTLIB;
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support->support_lib = str;
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spa_list_init(&global_registry.plugins);
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support->registry = &global_registry;
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if (pw_log_is_default()) {
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n_items = 0;
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if (getenv("NO_COLOR") == NULL)
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items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_LOG_COLORS, "true");
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items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_LOG_TIMESTAMP, "true");
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items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_LOG_LINE, "true");
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snprintf(level, sizeof(level), "%d", pw_log_level);
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items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_LOG_LEVEL, level);
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if ((str = getenv("PIPEWIRE_LOG")) != NULL)
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items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_LOG_FILE, str);
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info = SPA_DICT_INIT(items, n_items);
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log = add_interface(support, SPA_NAME_SUPPORT_LOG, SPA_TYPE_INTERFACE_Log, &info);
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if (log)
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pw_log_set(log);
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#ifdef HAVE_SYSTEMD
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if ((str = getenv("PIPEWIRE_LOG_SYSTEMD")) == NULL || spa_atob(str)) {
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log = load_journal_logger(support);
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if (log)
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pw_log_set(log);
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}
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#endif
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} else {
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support->support[support->n_support++] =
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SPA_SUPPORT_INIT(SPA_TYPE_INTERFACE_Log, pw_log_get());
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}
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n_items = 0;
|
|
if ((str = getenv("PIPEWIRE_CPU")))
|
|
items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_CPU_FORCE, str);
|
|
if ((str = getenv("PIPEWIRE_VM")))
|
|
items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_CPU_VM_TYPE, str);
|
|
info = SPA_DICT_INIT(items, n_items);
|
|
|
|
add_interface(support, SPA_NAME_SUPPORT_CPU, SPA_TYPE_INTERFACE_CPU, &info);
|
|
|
|
add_i18n(support);
|
|
|
|
pw_log_info("version %s", pw_get_library_version());
|
|
}
|
|
|
|
SPA_EXPORT
|
|
void pw_deinit(void)
|
|
{
|
|
struct support *support = &global_support;
|
|
struct registry *registry = &global_registry;
|
|
struct plugin *p;
|
|
|
|
pw_log_set(NULL);
|
|
spa_list_consume(p, ®istry->plugins, link) {
|
|
struct handle *h;
|
|
p->ref++;
|
|
spa_list_consume(h, &p->handles, link)
|
|
unref_handle(h);
|
|
unref_plugin(p);
|
|
}
|
|
if (support->categories)
|
|
pw_free_strv(support->categories);
|
|
free(support->i18n_domain);
|
|
spa_zero(global_support);
|
|
spa_zero(global_registry);
|
|
|
|
}
|
|
|
|
/** Check if a debug category is enabled
|
|
*
|
|
* \param name the name of the category to check
|
|
* \return true if enabled
|
|
*
|
|
* Debugging categories can be enabled by using the PIPEWIRE_DEBUG
|
|
* environment variable
|
|
*
|
|
* \memberof pw_pipewire
|
|
*/
|
|
SPA_EXPORT
|
|
bool pw_debug_is_category_enabled(const char *name)
|
|
{
|
|
int i;
|
|
|
|
if (global_support.categories == NULL)
|
|
return false;
|
|
|
|
for (i = 0; global_support.categories[i]; i++) {
|
|
if (spa_streq(global_support.categories[i], name))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/** Get the application name \memberof pw_pipewire */
|
|
SPA_EXPORT
|
|
const char *pw_get_application_name(void)
|
|
{
|
|
errno = ENOTSUP;
|
|
return NULL;
|
|
}
|
|
|
|
/** Get the program name \memberof pw_pipewire */
|
|
SPA_EXPORT
|
|
const char *pw_get_prgname(void)
|
|
{
|
|
static char prgname[PATH_MAX];
|
|
spa_memzero(prgname, sizeof(prgname));
|
|
#if defined(__linux__) || defined(__FreeBSD_kernel__)
|
|
{
|
|
ssize_t len;
|
|
if ((len = readlink("/proc/self/exe", prgname, sizeof(prgname)-1)) > 0)
|
|
return strrchr(prgname, '/') + 1;
|
|
}
|
|
#endif
|
|
#if defined __FreeBSD__
|
|
{
|
|
ssize_t len;
|
|
spa_memzero(prgname, sizeof(prgname));
|
|
if ((len = readlink("/proc/curproc/file", prgname, sizeof(prgname)-1)) > 0)
|
|
return strrchr(prgname, '/') + 1;
|
|
}
|
|
#endif
|
|
#ifndef __FreeBSD__
|
|
{
|
|
if (prctl(PR_GET_NAME, (unsigned long) prgname, 0, 0, 0) == 0)
|
|
return prgname;
|
|
}
|
|
#endif
|
|
snprintf(prgname, sizeof(prgname), "pid-%d", getpid());
|
|
return prgname;
|
|
}
|
|
|
|
/** Get the user name \memberof pw_pipewire */
|
|
SPA_EXPORT
|
|
const char *pw_get_user_name(void)
|
|
{
|
|
struct passwd *pw;
|
|
|
|
if ((pw = getpwuid(getuid())))
|
|
return pw->pw_name;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/** Get the host name \memberof pw_pipewire */
|
|
SPA_EXPORT
|
|
const char *pw_get_host_name(void)
|
|
{
|
|
static char hname[256];
|
|
|
|
if (gethostname(hname, 256) < 0)
|
|
return NULL;
|
|
|
|
hname[255] = 0;
|
|
return hname;
|
|
}
|
|
|
|
SPA_EXPORT
|
|
bool pw_in_valgrind(void)
|
|
{
|
|
return global_support.in_valgrind;
|
|
}
|
|
|
|
/** Get the client name
|
|
*
|
|
* Make a new PipeWire client name that can be used to construct a remote.
|
|
*
|
|
* \memberof pw_pipewire
|
|
*/
|
|
SPA_EXPORT
|
|
const char *pw_get_client_name(void)
|
|
{
|
|
const char *cc;
|
|
static char cname[256];
|
|
|
|
if ((cc = pw_get_application_name()))
|
|
return cc;
|
|
else if ((cc = pw_get_prgname()))
|
|
return cc;
|
|
else {
|
|
if (snprintf(cname, sizeof(cname), "pipewire-pid-%zd", (size_t) getpid()) < 0)
|
|
return NULL;
|
|
return cname;
|
|
}
|
|
}
|
|
|
|
/** Reverse the direction \memberof pw_pipewire */
|
|
SPA_EXPORT
|
|
enum pw_direction pw_direction_reverse(enum pw_direction direction)
|
|
{
|
|
if (direction == PW_DIRECTION_INPUT)
|
|
return PW_DIRECTION_OUTPUT;
|
|
else if (direction == PW_DIRECTION_OUTPUT)
|
|
return PW_DIRECTION_INPUT;
|
|
return direction;
|
|
}
|
|
|
|
/** Get the currently running version */
|
|
SPA_EXPORT
|
|
const char* pw_get_library_version(void)
|
|
{
|
|
return pw_get_headers_version();
|
|
}
|
|
|
|
static const struct spa_type_info type_info[] = {
|
|
{ SPA_ID_INVALID, SPA_ID_INVALID, "spa_types", spa_types },
|
|
{ 0, 0, NULL, NULL },
|
|
};
|
|
|
|
SPA_EXPORT
|
|
const struct spa_type_info * pw_type_info(void)
|
|
{
|
|
return type_info;
|
|
}
|