mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-12-29 11:08:40 -05:00
raop: add beginnings of RAOP protocol
This commit is contained in:
Wim Taymans
parent
c21536eec8
commit
9223fc2885
6 changed files with 2235 additions and 0 deletions
541
src/modules/module-raop-discover.c
Normal file
541
src/modules/module-raop-discover.c
Normal file
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@ -0,0 +1,541 @@
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/* PipeWire
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*
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* Copyright © 2021 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 <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "config.h"
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#include <spa/utils/result.h>
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#include <spa/utils/string.h>
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#include <spa/utils/json.h>
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#include <pipewire/impl.h>
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#include <pipewire/private.h>
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#include <pipewire/i18n.h>
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#include <avahi-client/lookup.h>
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#include <avahi-common/error.h>
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#include <avahi-common/malloc.h>
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#include "module-protocol-pulse/format.h"
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#include "module-zeroconf-discover/avahi-poll.h"
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/** \page page_module_zeroconf_discover PipeWire Module: Zeroconf Discover
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*/
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#define NAME "zeroconf-discover"
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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 MODULE_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, "Discover remote streams" },
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{ PW_KEY_MODULE_USAGE, MODULE_USAGE },
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{ PW_KEY_MODULE_VERSION, PACKAGE_VERSION },
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};
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#define SERVICE_TYPE_SINK "_raop._tcp"
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struct impl {
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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_work_queue *work;
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struct pw_properties *properties;
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AvahiPoll *avahi_poll;
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AvahiClient *client;
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AvahiServiceBrowser *sink_browser;
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struct spa_list tunnel_list;
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unsigned int unloading:1;
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};
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struct tunnel_info {
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AvahiIfIndex interface;
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AvahiProtocol protocol;
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const char *name;
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const char *type;
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const char *domain;
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};
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#define TUNNEL_INFO(...) (struct tunnel_info){ __VA_ARGS__ }
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struct tunnel {
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struct spa_list link;
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struct tunnel_info info;
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struct pw_impl_module *module;
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struct spa_hook module_listener;
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};
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static int start_client(struct impl *impl);
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static void do_unload_module(void *obj, void *data, int res, uint32_t id)
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{
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struct impl *impl = data;
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pw_impl_module_destroy(impl->module);
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}
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static void unload_module(struct impl *impl)
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{
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if (!impl->unloading) {
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impl->unloading = true;
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pw_work_queue_add(impl->work, impl, 0, do_unload_module, impl);
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}
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}
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static struct tunnel *make_tunnel(struct impl *impl, const struct tunnel_info *info)
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{
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struct tunnel *t;
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t = calloc(1, sizeof(*t));
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if (t == NULL)
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return NULL;
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t->info.interface = info->interface;
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t->info.protocol = info->protocol;
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t->info.name = strdup(info->name);
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t->info.type = strdup(info->type);
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t->info.domain = strdup(info->domain);
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spa_list_append(&impl->tunnel_list, &t->link);
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return t;
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}
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static struct tunnel *find_tunnel(struct impl *impl, const struct tunnel_info *info)
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{
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struct tunnel *t;
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spa_list_for_each(t, &impl->tunnel_list, link) {
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if (t->info.interface == info->interface &&
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t->info.protocol == info->protocol &&
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spa_streq(t->info.name, info->name) &&
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spa_streq(t->info.type, info->type) &&
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spa_streq(t->info.domain, info->domain))
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return t;
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}
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return NULL;
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}
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static void free_tunnel(struct tunnel *t)
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{
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pw_impl_module_destroy(t->module);
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}
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static void impl_free(struct impl *impl)
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{
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struct tunnel *t;
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spa_list_consume(t, &impl->tunnel_list, link)
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free_tunnel(t);
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if (impl->sink_browser)
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avahi_service_browser_free(impl->sink_browser);
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if (impl->client)
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avahi_client_free(impl->client);
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if (impl->avahi_poll)
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pw_avahi_poll_free(impl->avahi_poll);
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pw_properties_free(impl->properties);
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if (impl->work)
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pw_work_queue_cancel(impl->work, impl, SPA_ID_INVALID);
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free(impl);
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}
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static void module_destroy(void *data)
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{
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struct impl *impl = data;
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spa_hook_remove(&impl->module_listener);
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impl_free(impl);
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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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};
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static bool str_in_list(const char *haystack, const char *delimiters, const char *needle)
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{
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const char *s, *state = NULL;
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size_t len;
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while ((s = pw_split_walk(haystack, delimiters, &len, &state))) {
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if (spa_strneq(needle, s, len))
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return true;
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}
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return false;
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}
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static void pw_properties_from_avahi_string(const char *key, const char *value,
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struct pw_properties *props)
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{
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if (spa_streq(key, "device")) {
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pw_properties_set(props, "raop.device", value);
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}
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else if (spa_streq(key, "tp")) {
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/* transport protocol, "UDP", "TCP", "UDP,TCP" */
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if (str_in_list(value, ",", "UDP"))
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value = "udp";
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else if (str_in_list(value, ",", "TCP"))
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value = "tcp";
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pw_properties_set(props, "raop.transport", value);
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} else if (spa_streq(key, "et")) {
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/* Supported encryption types:
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* 0 = none,
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* 1 = RSA,
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* 2 = FairPlay,
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* 3 = MFiSAP,
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* 4 = FairPlay SAPv2.5. */
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if (str_in_list(value, ",", "1"))
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value = "RSA";
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else
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value = "none";
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pw_properties_set(props, "raop.encryption.type", value);
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} else if (spa_streq(key, "cn")) {
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/* Suported audio codecs:
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* 0 = PCM,
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* 1 = ALAC,
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* 2 = AAC,
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* 3 = AAC ELD. */
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if (str_in_list(value, ",", "0"))
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value = "PCM";
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else if (str_in_list(value, ",", "1"))
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value = "ALAC";
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else if (str_in_list(value, ",", "2"))
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value = "AAC";
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else if (str_in_list(value, ",", "2"))
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value = "AAC-ELD";
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else
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value = "unknown";
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pw_properties_set(props, "raop.audio.codec", value);
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} else if (spa_streq(key, "ch")) {
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/* Number of channels */
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pw_properties_set(props, PW_KEY_AUDIO_CHANNELS, value);
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} else if (spa_streq(key, "ss")) {
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/* Sample size */
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if (spa_streq(value, "16"))
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value = "S16";
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else if (spa_streq(value, "24"))
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value = "S24";
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else if (spa_streq(value, "32"))
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value = "S32";
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else
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value = "UNKNOWN";
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pw_properties_set(props, PW_KEY_AUDIO_FORMAT, value);
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} else if (spa_streq(key, "sr")) {
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/* Sample rate */
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pw_properties_set(props, PW_KEY_AUDIO_RATE, value);
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} else if (spa_streq(key, "am")) {
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/* Device model */
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pw_properties_set(props, "device.model", value);
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}
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}
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static void submodule_destroy(void *data)
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{
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struct tunnel *t = data;
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spa_list_remove(&t->link);
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spa_hook_remove(&t->module_listener);
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free((char *) t->info.name);
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free((char *) t->info.type);
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free((char *) t->info.domain);
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free(t);
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}
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static const struct pw_impl_module_events submodule_events = {
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PW_VERSION_IMPL_MODULE_EVENTS,
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.destroy = submodule_destroy,
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};
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static void resolver_cb(AvahiServiceResolver *r, AvahiIfIndex interface, AvahiProtocol protocol,
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AvahiResolverEvent event, const char *name, const char *type, const char *domain,
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const char *host_name, const AvahiAddress *a, uint16_t port, AvahiStringList *txt,
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AvahiLookupResultFlags flags, void *userdata)
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{
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struct impl *impl = userdata;
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struct tunnel *t;
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struct tunnel_info tinfo;
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const char *str;
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AvahiStringList *l;
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FILE *f;
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char *args;
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size_t size;
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struct pw_impl_module *mod;
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struct pw_properties *props = NULL;
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char at[AVAHI_ADDRESS_STR_MAX];
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if (event != AVAHI_RESOLVER_FOUND) {
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pw_log_error("Resolving of '%s' failed: %s", name,
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avahi_strerror(avahi_client_errno(impl->client)));
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goto done;
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}
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tinfo = TUNNEL_INFO(.interface = interface,
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.protocol = protocol,
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.name = name,
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.type = type,
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.domain = domain);
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props = pw_properties_new(NULL, NULL);
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if (props == NULL) {
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pw_log_error("Can't allocate properties: %m");
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goto done;
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}
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avahi_address_snprint(at, sizeof(at), a);
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pw_properties_setf(props, "raop.hostname", "%s", at);
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pw_properties_setf(props, "raop.port", "%u", port);
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|
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if ((str = strstr(name, "@"))) {
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str++;
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if (strlen(str) > 0)
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pw_properties_set(props, PW_KEY_NODE_DESCRIPTION, str);
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||||
else
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pw_properties_setf(props, PW_KEY_NODE_DESCRIPTION,
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"RAOP on %s", host_name);
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||||
}
|
||||
|
||||
for (l = txt; l; l = l->next) {
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||||
char *key, *value;
|
||||
|
||||
if (avahi_string_list_get_pair(l, &key, &value, NULL) != 0)
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||||
break;
|
||||
|
||||
pw_properties_from_avahi_string(key, value, props);
|
||||
avahi_free(key);
|
||||
avahi_free(value);
|
||||
}
|
||||
|
||||
|
||||
f = open_memstream(&args, &size);
|
||||
fprintf(f, "{");
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||||
pw_properties_serialize_dict(f, &props->dict, 0);
|
||||
fprintf(f, " stream.props = {");
|
||||
fprintf(f, " }");
|
||||
fprintf(f, "}");
|
||||
fclose(f);
|
||||
|
||||
pw_properties_free(props);
|
||||
|
||||
pw_log_info("loading module args:'%s'", args);
|
||||
mod = pw_context_load_module(impl->context,
|
||||
"libpipewire-module-raop-sink",
|
||||
args, NULL);
|
||||
free(args);
|
||||
|
||||
if (mod == NULL) {
|
||||
pw_log_error("Can't load module: %m");
|
||||
goto done;
|
||||
}
|
||||
|
||||
t = make_tunnel(impl, &tinfo);
|
||||
if (t == NULL) {
|
||||
pw_log_error("Can't make tunnel: %m");
|
||||
pw_impl_module_destroy(mod);
|
||||
goto done;
|
||||
}
|
||||
|
||||
pw_impl_module_add_listener(mod, &t->module_listener, &submodule_events, t);
|
||||
|
||||
t->module = mod;
|
||||
|
||||
done:
|
||||
avahi_service_resolver_free(r);
|
||||
}
|
||||
|
||||
|
||||
static void browser_cb(AvahiServiceBrowser *b, AvahiIfIndex interface, AvahiProtocol protocol,
|
||||
AvahiBrowserEvent event, const char *name, const char *type, const char *domain,
|
||||
AvahiLookupResultFlags flags, void *userdata)
|
||||
{
|
||||
struct impl *impl = userdata;
|
||||
struct tunnel_info info;
|
||||
struct tunnel *t;
|
||||
|
||||
if (flags & AVAHI_LOOKUP_RESULT_LOCAL)
|
||||
return;
|
||||
|
||||
info = TUNNEL_INFO(.interface = interface,
|
||||
.protocol = protocol,
|
||||
.name = name,
|
||||
.type = type,
|
||||
.domain = domain);
|
||||
|
||||
t = find_tunnel(impl, &info);
|
||||
|
||||
switch (event) {
|
||||
case AVAHI_BROWSER_NEW:
|
||||
if (t != NULL)
|
||||
return;
|
||||
if (!(avahi_service_resolver_new(impl->client,
|
||||
interface, protocol,
|
||||
name, type, domain,
|
||||
AVAHI_PROTO_UNSPEC, 0,
|
||||
resolver_cb, impl)))
|
||||
pw_log_error("can't make service resolver: %s",
|
||||
avahi_strerror(avahi_client_errno(impl->client)));
|
||||
break;
|
||||
case AVAHI_BROWSER_REMOVE:
|
||||
if (t == NULL)
|
||||
return;
|
||||
free_tunnel(t);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static struct AvahiServiceBrowser *make_browser(struct impl *impl, const char *service_type)
|
||||
{
|
||||
struct AvahiServiceBrowser *s;
|
||||
|
||||
s = avahi_service_browser_new(impl->client,
|
||||
AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC,
|
||||
service_type, NULL, 0,
|
||||
browser_cb, impl);
|
||||
if (s == NULL) {
|
||||
pw_log_error("can't make browser for %s: %s", service_type,
|
||||
avahi_strerror(avahi_client_errno(impl->client)));
|
||||
}
|
||||
return s;
|
||||
}
|
||||
|
||||
static void client_callback(AvahiClient *c, AvahiClientState state, void *userdata)
|
||||
{
|
||||
struct impl *impl = userdata;
|
||||
|
||||
impl->client = c;
|
||||
|
||||
switch (state) {
|
||||
case AVAHI_CLIENT_S_REGISTERING:
|
||||
case AVAHI_CLIENT_S_RUNNING:
|
||||
case AVAHI_CLIENT_S_COLLISION:
|
||||
if (impl->sink_browser == NULL)
|
||||
impl->sink_browser = make_browser(impl, SERVICE_TYPE_SINK);
|
||||
if (impl->sink_browser == NULL)
|
||||
goto error;
|
||||
break;
|
||||
case AVAHI_CLIENT_FAILURE:
|
||||
if (avahi_client_errno(c) == AVAHI_ERR_DISCONNECTED)
|
||||
start_client(impl);
|
||||
|
||||
SPA_FALLTHROUGH;
|
||||
case AVAHI_CLIENT_CONNECTING:
|
||||
if (impl->sink_browser) {
|
||||
avahi_service_browser_free(impl->sink_browser);
|
||||
impl->sink_browser = NULL;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return;
|
||||
error:
|
||||
unload_module(impl);
|
||||
}
|
||||
|
||||
static int start_client(struct impl *impl)
|
||||
{
|
||||
int res;
|
||||
if ((impl->client = avahi_client_new(impl->avahi_poll,
|
||||
AVAHI_CLIENT_NO_FAIL,
|
||||
client_callback, impl,
|
||||
&res)) == NULL) {
|
||||
pw_log_error("can't create client: %s", avahi_strerror(res));
|
||||
unload_module(impl);
|
||||
return -EIO;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int start_avahi(struct impl *impl)
|
||||
{
|
||||
struct pw_loop *loop;
|
||||
|
||||
loop = pw_context_get_main_loop(impl->context);
|
||||
impl->avahi_poll = pw_avahi_poll_new(loop);
|
||||
|
||||
return start_client(impl);
|
||||
}
|
||||
|
||||
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_properties *props;
|
||||
struct impl *impl;
|
||||
int res;
|
||||
|
||||
PW_LOG_TOPIC_INIT(mod_topic);
|
||||
|
||||
impl = calloc(1, sizeof(struct impl));
|
||||
if (impl == NULL)
|
||||
goto error_errno;
|
||||
|
||||
pw_log_debug("module %p: new %s", impl, args);
|
||||
|
||||
if (args == NULL)
|
||||
args = "";
|
||||
|
||||
props = pw_properties_new_string(args);
|
||||
if (props == NULL)
|
||||
goto error_errno;
|
||||
|
||||
spa_list_init(&impl->tunnel_list);
|
||||
|
||||
impl->module = module;
|
||||
impl->context = context;
|
||||
impl->properties = props;
|
||||
|
||||
impl->work = pw_context_get_work_queue(context);
|
||||
if (impl->work == NULL)
|
||||
goto error_errno;
|
||||
|
||||
pw_impl_module_add_listener(module, &impl->module_listener, &module_events, impl);
|
||||
|
||||
pw_impl_module_update_properties(module, &SPA_DICT_INIT_ARRAY(module_props));
|
||||
|
||||
start_avahi(impl);
|
||||
|
||||
return 0;
|
||||
|
||||
error_errno:
|
||||
res = -errno;
|
||||
if (impl)
|
||||
impl_free(impl);
|
||||
return res;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue