270 lines
6.7 KiB
C
270 lines
6.7 KiB
C
/* 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 <string.h>
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#include <stdio.h>
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#include <errno.h>
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#include <math.h>
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#include <time.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 <spa/utils/string.h>
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#include <spa/param/props.h>
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#include <spa/debug/pod.h>
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#include "pipewire/pipewire.h"
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#include "media-session.h"
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/** \page page_media_session_module_suspend_node Media Session Module: Suspend Node
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*/
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#define NAME "suspend-node"
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#define SESSION_KEY "suspend-node"
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#define DEFAULT_IDLE_SECONDS 3
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PW_LOG_TOPIC_STATIC(mod_topic, "ms.mod." NAME);
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#define PW_LOG_TOPIC_DEFAULT mod_topic
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struct impl {
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struct timespec now;
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struct sm_media_session *session;
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struct spa_hook listener;
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struct pw_context *context;
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struct spa_list node_list;
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int seq;
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};
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struct node {
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struct sm_node *obj;
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uint32_t id;
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struct impl *impl;
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struct spa_list link; /**< link in impl node_list */
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enum pw_direction direction;
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struct spa_hook listener;
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struct spa_source *idle_timeout;
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};
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static void remove_idle_timeout(struct node *node)
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{
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struct impl *impl = node->impl;
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struct pw_loop *main_loop = pw_context_get_main_loop(impl->context);
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if (node->idle_timeout) {
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pw_loop_destroy_source(main_loop, node->idle_timeout);
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node->idle_timeout = NULL;
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}
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}
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static void idle_timeout(void *data, uint64_t expirations)
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{
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struct node *node = data;
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struct impl *impl = node->impl;
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struct spa_command *cmd = &SPA_NODE_COMMAND_INIT(SPA_NODE_COMMAND_Suspend);
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pw_log_info("%p: node %d suspend", impl, node->id);
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remove_idle_timeout(node);
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pw_node_send_command((struct pw_node*)node->obj->obj.proxy, cmd);
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sm_object_release(&node->obj->obj);
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}
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static void add_idle_timeout(struct node *node)
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{
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struct timespec value;
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struct impl *impl = node->impl;
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struct pw_loop *main_loop = pw_context_get_main_loop(impl->context);
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const char *str;
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if (node->obj->info && node->obj->info->props &&
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(str = spa_dict_lookup(node->obj->info->props, "session.suspend-timeout-seconds")) != NULL)
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value.tv_sec = atoi(str);
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else
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value.tv_sec = DEFAULT_IDLE_SECONDS;
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if (value.tv_sec == 0)
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return;
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if (node->idle_timeout == NULL)
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node->idle_timeout = pw_loop_add_timer(main_loop, idle_timeout, node);
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value.tv_nsec = 0;
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pw_loop_update_timer(main_loop, node->idle_timeout, &value, NULL, false);
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}
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static int on_node_idle(struct impl *impl, struct node *node)
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{
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pw_log_debug("%p: node %d idle", impl, node->id);
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add_idle_timeout(node);
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return 0;
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}
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static int on_node_running(struct impl *impl, struct node *node)
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{
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pw_log_debug("%p: node %d running", impl, node->id);
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sm_object_acquire(&node->obj->obj);
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remove_idle_timeout(node);
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return 0;
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}
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static void object_update(void *data)
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{
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struct node *node = data;
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struct impl *impl = node->impl;
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pw_log_debug("%p: node %p %08x", impl, node, node->obj->obj.changed);
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if (node->obj->obj.changed & SM_NODE_CHANGE_MASK_INFO) {
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const struct pw_node_info *info = node->obj->info;
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if (info->change_mask & PW_NODE_CHANGE_MASK_STATE) {
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switch (info->state) {
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case PW_NODE_STATE_ERROR:
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case PW_NODE_STATE_IDLE:
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on_node_idle(impl, node);
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break;
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case PW_NODE_STATE_RUNNING:
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on_node_running(impl, node);
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break;
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case PW_NODE_STATE_SUSPENDED:
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break;
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default:
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break;
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}
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}
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}
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}
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static const struct sm_object_events object_events = {
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SM_VERSION_OBJECT_EVENTS,
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.update = object_update
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};
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static int
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handle_node(struct impl *impl, struct sm_object *object)
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{
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struct node *node;
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const char *media_class;
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media_class = object->props ? pw_properties_get(object->props, PW_KEY_MEDIA_CLASS) : NULL;
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if (media_class == NULL)
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return 0;
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if (!spa_strstartswith(media_class, "Audio/") &&
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(!spa_strstartswith(media_class, "Video/")))
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return 0;
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node = sm_object_add_data(object, SESSION_KEY, sizeof(struct node));
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node->obj = (struct sm_node*)object;
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node->impl = impl;
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node->id = object->id;
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spa_list_append(&impl->node_list, &node->link);
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node->obj->obj.mask |= SM_NODE_CHANGE_MASK_INFO;
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sm_object_add_listener(&node->obj->obj, &node->listener, &object_events, node);
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return 1;
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}
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static void destroy_node(struct impl *impl, struct node *node)
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{
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remove_idle_timeout(node);
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spa_list_remove(&node->link);
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spa_hook_remove(&node->listener);
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sm_object_remove_data((struct sm_object*)node->obj, SESSION_KEY);
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}
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static void session_create(void *data, struct sm_object *object)
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{
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struct impl *impl = data;
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int res;
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if (spa_streq(object->type, PW_TYPE_INTERFACE_Node))
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res = handle_node(impl, object);
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else
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res = 0;
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if (res < 0)
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pw_log_warn("%p: can't handle global %d", impl, object->id);
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}
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static void session_remove(void *data, struct sm_object *object)
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{
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struct impl *impl = data;
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pw_log_debug("%p: remove global '%d'", impl, object->id);
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if (spa_streq(object->type, PW_TYPE_INTERFACE_Node)) {
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struct node *node;
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if ((node = sm_object_get_data(object, SESSION_KEY)) != NULL)
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destroy_node(impl, node);
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}
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}
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static void session_destroy(void *data)
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{
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struct impl *impl = data;
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spa_hook_remove(&impl->listener);
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free(impl);
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}
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static const struct sm_media_session_events session_events = {
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SM_VERSION_MEDIA_SESSION_EVENTS,
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.create = session_create,
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.remove = session_remove,
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.destroy = session_destroy,
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};
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int sm_suspend_node_start(struct sm_media_session *session)
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{
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struct impl *impl;
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PW_LOG_TOPIC_INIT(mod_topic);
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impl = calloc(1, sizeof(struct impl));
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if (impl == NULL)
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return -errno;
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impl->session = session;
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impl->context = session->context;
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spa_list_init(&impl->node_list);
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sm_media_session_add_listener(impl->session, &impl->listener, &session_events, impl);
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return 0;
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}
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