mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-06 13:30:01 -05:00
Barnabás Pőcze
parent
b2ec1fb60a
commit
49d31ea0af
14 changed files with 1044 additions and 665 deletions
291
src/modules/module-protocol-pulse/client.c
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291
src/modules/module-protocol-pulse/client.c
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/* PipeWire
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*
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* Copyright © 2020 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 <stdbool.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#include <spa/utils/defs.h>
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#include <spa/utils/list.h>
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#include <pipewire/core.h>
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#include <pipewire/log.h>
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#include <pipewire/loop.h>
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#include <pipewire/map.h>
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#include <pipewire/properties.h>
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#include "client.h"
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#include "commands.h"
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#include "defs.h"
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#include "internal.h"
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#include "manager.h"
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#include "message.h"
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#include "operation.h"
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#include "pending-sample.h"
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#include "stream.h"
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static int client_free_stream(void *item, void *data)
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{
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struct stream *s = item;
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stream_free(s);
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return 0;
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}
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/*
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* tries to detach the client from the server,
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* but it does not drop the server's reference
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*/
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bool client_detach(struct client *client)
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{
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struct impl *impl = client->impl;
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struct server *server = client->server;
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if (server == NULL)
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return false;
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pw_log_debug("client %p: detaching from server %p", client, server);
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/* remove from the `server->clients` list */
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spa_list_remove(&client->link);
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server->n_clients--;
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if (server->wait_clients > 0 && --server->wait_clients == 0) {
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int mask = server->source->mask;
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SPA_FLAG_SET(mask, SPA_IO_IN);
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pw_loop_update_io(impl->loop, server->source, mask);
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}
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client->server = NULL;
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return true;
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}
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void client_disconnect(struct client *client)
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{
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struct impl *impl = client->impl;
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if (client->disconnect)
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return;
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/* the client must be detached from the server to disconnect */
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spa_assert(client->server == NULL);
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client->disconnect = true;
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spa_list_append(&impl->cleanup_clients, &client->link);
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pw_map_for_each(&client->streams, client_free_stream, client);
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if (client->source)
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pw_loop_destroy_source(impl->loop, client->source);
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if (client->manager)
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pw_manager_destroy(client->manager);
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}
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void client_free(struct client *client)
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{
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struct impl *impl = client->impl;
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struct pending_sample *p;
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struct message *msg;
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struct operation *o;
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pw_log_debug("client %p: free", client);
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client_detach(client);
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client_disconnect(client);
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/* remove from the `impl->cleanup_clients` list */
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spa_list_remove(&client->link);
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spa_list_consume(p, &client->pending_samples, link)
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pending_sample_free(p);
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spa_list_consume(msg, &client->out_messages, link)
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message_free(impl, msg, true, false);
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spa_list_consume(o, &client->operations, link)
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operation_free(o);
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if (client->core) {
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client->disconnecting = true;
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pw_core_disconnect(client->core);
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}
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pw_map_clear(&client->streams);
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free(client->default_sink);
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free(client->default_source);
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if (client->props)
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pw_properties_free(client->props);
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if (client->routes)
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pw_properties_free(client->routes);
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free(client);
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}
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int client_queue_message(struct client *client, struct message *msg)
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{
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struct impl *impl = client->impl;
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int res, mask;
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if (msg == NULL)
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return -EINVAL;
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if (msg->length == 0) {
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res = 0;
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goto error;
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} else if (msg->length > msg->allocated) {
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res = -ENOMEM;
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goto error;
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}
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msg->offset = 0;
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spa_list_append(&client->out_messages, &msg->link);
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mask = client->source->mask;
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if (!SPA_FLAG_IS_SET(mask, SPA_IO_OUT)) {
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client->need_flush = true;
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SPA_FLAG_SET(mask, SPA_IO_OUT);
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pw_loop_update_io(impl->loop, client->source, mask);
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}
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return 0;
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error:
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message_free(impl, msg, false, false);
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return res;
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}
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int client_flush_messages(struct client *client)
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{
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struct impl *impl = client->impl;
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int res;
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while (true) {
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struct message *m;
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struct descriptor desc;
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void *data;
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size_t size;
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if (spa_list_is_empty(&client->out_messages))
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break;
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m = spa_list_first(&client->out_messages, struct message, link);
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if (client->out_index < sizeof(desc)) {
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desc.length = htonl(m->length);
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desc.channel = htonl(m->channel);
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desc.offset_hi = 0;
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desc.offset_lo = 0;
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desc.flags = 0;
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data = SPA_PTROFF(&desc, client->out_index, void);
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size = sizeof(desc) - client->out_index;
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} else if (client->out_index < m->length + sizeof(desc)) {
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uint32_t idx = client->out_index - sizeof(desc);
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data = m->data + idx;
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size = m->length - idx;
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} else {
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if (debug_messages && m->channel == SPA_ID_INVALID)
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message_dump(SPA_LOG_LEVEL_INFO, m);
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message_free(impl, m, true, false);
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client->out_index = 0;
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continue;
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}
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while (true) {
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res = send(client->source->fd, data, size, MSG_NOSIGNAL | MSG_DONTWAIT);
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if (res < 0) {
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res = -errno;
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if (res == -EINTR)
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continue;
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if (res != -EAGAIN && res != -EWOULDBLOCK)
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pw_log_warn("client %p: send channel:%d %zu, error %d: %m",
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client, m->channel, size, res);
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return res;
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}
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client->out_index += res;
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break;
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}
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}
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return 0;
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}
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int client_queue_subscribe_event(struct client *client, uint32_t mask, uint32_t event, uint32_t id)
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{
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struct impl *impl = client->impl;
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struct message *reply, *m, *t;
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if (!(client->subscribed & mask))
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return 0;
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pw_log_debug("client %p: SUBSCRIBE event:%08x id:%u", client, event, id);
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if ((event & SUBSCRIPTION_EVENT_TYPE_MASK) != SUBSCRIPTION_EVENT_NEW) {
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spa_list_for_each_safe_reverse(m, t, &client->out_messages, link) {
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if (m->extra[0] != COMMAND_SUBSCRIBE_EVENT)
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continue;
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if ((m->extra[1] ^ event) & SUBSCRIPTION_EVENT_FACILITY_MASK)
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continue;
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if (m->extra[2] != id)
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continue;
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if ((event & SUBSCRIPTION_EVENT_TYPE_MASK) == SUBSCRIPTION_EVENT_REMOVE) {
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/* This object is being removed, hence there is
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* point in keeping the old events regarding
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* entry in the queue. */
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message_free(impl, m, true, false);
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pw_log_debug("client %p: dropped redundant event due to remove event", client);
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continue;
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}
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if ((event & SUBSCRIPTION_EVENT_TYPE_MASK) == SUBSCRIPTION_EVENT_CHANGE) {
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/* This object has changed. If a "new" or "change" event for
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* this object is still in the queue we can exit. */
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pw_log_debug("client %p: dropped redundant event due to change event", client);
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return 0;
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}
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}
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}
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reply = message_alloc(impl, -1, 0);
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reply->extra[0] = COMMAND_SUBSCRIBE_EVENT,
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reply->extra[1] = event,
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reply->extra[2] = id,
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message_put(reply,
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TAG_U32, COMMAND_SUBSCRIBE_EVENT,
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TAG_U32, -1,
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TAG_U32, event,
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TAG_U32, id,
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TAG_INVALID);
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return client_queue_message(client, reply);
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}
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