mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
synced 2025-11-04 13:30:12 -05:00
Make simple node policy
Make it possible to run the session manager without endpoint modules. Add a simple node policy that links nodes. Move the session-manager implementation and startup of the endpoint monitors to a separate module. Handle async set_param on the device
This commit is contained in:
Wim Taymans
parent
3b05896cd6
commit
b312e77385
9 changed files with 1570 additions and 134 deletions
512
src/examples/media-session/policy-node.c
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512
src/examples/media-session/policy-node.c
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/* PipeWire
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*
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* Copyright © 2019 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/param/audio/format-utils.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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#define NAME "policy-node"
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#define SESSION_KEY "policy-node"
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#define DEFAULT_CHANNELS 2
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#define DEFAULT_SAMPLERATE 48000
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#define DEFAULT_IDLE_SECONDS 3
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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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uint32_t linked;
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uint32_t client_id;
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int32_t priority;
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#define NODE_TYPE_UNKNOWN 0
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#define NODE_TYPE_STREAM 1
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#define NODE_TYPE_DEVICE 2
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uint32_t type;
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char *media;
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struct spa_audio_info format;
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uint64_t plugged;
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unsigned int active:1;
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unsigned int exclusive:1;
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unsigned int enabled:1;
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unsigned int busy:1;
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};
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static int activate_node(struct node *node)
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{
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struct impl *impl = node->impl;
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struct sm_param *p;
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char buf[1024];
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struct spa_pod_builder b = { 0, };
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struct spa_pod *param;
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pw_log_debug(NAME" %p: node %p activate", impl, node);
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spa_list_for_each(p, &node->obj->param_list, link) {
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struct spa_audio_info info = { 0, };
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if (p->id != SPA_PARAM_EnumFormat)
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continue;
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if (spa_format_parse(p->param, &info.media_type, &info.media_subtype) < 0)
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continue;
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if (info.media_type != SPA_MEDIA_TYPE_audio ||
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info.media_subtype != SPA_MEDIA_SUBTYPE_raw)
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continue;
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spa_pod_object_fixate((struct spa_pod_object*)p->param);
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if (pw_log_level_enabled(SPA_LOG_LEVEL_DEBUG))
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spa_debug_pod(2, NULL, p->param);
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if (spa_format_audio_raw_parse(p->param, &info.info.raw) < 0)
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continue;
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if (node->format.info.raw.channels < info.info.raw.channels)
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node->format = info;
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}
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node->format.info.raw.rate = 48000;
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spa_pod_builder_init(&b, buf, sizeof(buf));
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param = spa_format_audio_raw_build(&b, SPA_PARAM_Format, &node->format.info.raw);
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param = spa_pod_builder_add_object(&b,
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SPA_TYPE_OBJECT_ParamPortConfig, SPA_PARAM_PortConfig,
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SPA_PARAM_PORT_CONFIG_direction, SPA_POD_Id(node->direction),
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SPA_PARAM_PORT_CONFIG_mode, SPA_POD_Id(SPA_PARAM_PORT_CONFIG_MODE_dsp),
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SPA_PARAM_PORT_CONFIG_monitor, SPA_POD_Bool(true),
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SPA_PARAM_PORT_CONFIG_format, SPA_POD_Pod(param));
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if (pw_log_level_enabled(SPA_LOG_LEVEL_DEBUG))
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spa_debug_pod(2, NULL, param);
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pw_node_set_param((struct pw_node*)node->obj->obj.proxy,
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SPA_PARAM_PortConfig, 0, param);
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node->active = true;
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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(NAME" %p: node %p %08x", impl, node, node->obj->obj.changed);
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if (node->obj->obj.avail & SM_NODE_CHANGE_MASK_PARAMS &&
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!node->active)
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activate_node(node);
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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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const char *str, *media_class;
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enum pw_direction direction;
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struct node *node;
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uint32_t client_id = SPA_ID_INVALID;
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if (object->props) {
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if ((str = pw_properties_get(object->props, PW_KEY_CLIENT_ID)) != NULL)
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client_id = atoi(str);
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}
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media_class = object->props ? pw_properties_get(object->props, PW_KEY_MEDIA_CLASS) : NULL;
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pw_log_debug(NAME" %p: node "PW_KEY_MEDIA_CLASS" %s", impl, media_class);
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if (media_class == NULL)
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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->id = object->id;
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node->impl = impl;
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node->client_id = client_id;
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node->type = NODE_TYPE_UNKNOWN;
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node->enabled = true;
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spa_list_append(&impl->node_list, &node->link);
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if (strstr(media_class, "Stream/") == media_class) {
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media_class += strlen("Stream/");
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if (strstr(media_class, "Output/") == media_class) {
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direction = PW_DIRECTION_OUTPUT;
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media_class += strlen("Output/");
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}
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else if (strstr(media_class, "Input/") == media_class) {
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direction = PW_DIRECTION_INPUT;
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media_class += strlen("Input/");
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}
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else
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return 0;
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node->direction = direction;
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node->type = NODE_TYPE_STREAM;
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node->media = strdup(media_class);
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pw_log_debug(NAME "%p: node %d is stream %s", impl, object->id, node->media);
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}
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else {
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const char *media;
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if (strstr(media_class, "Audio/") == media_class) {
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media_class += strlen("Audio/");
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media = "Audio";
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}
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else if (strstr(media_class, "Video/") == media_class) {
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media_class += strlen("Video/");
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media = "Video";
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}
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else
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return 0;
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if (strcmp(media_class, "Sink") == 0)
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direction = PW_DIRECTION_INPUT;
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else if (strcmp(media_class, "Source") == 0)
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direction = PW_DIRECTION_OUTPUT;
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else
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return 0;
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node->direction = direction;
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node->type = NODE_TYPE_DEVICE;
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node->media = strdup(media);
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pw_log_debug(NAME" %p: node %d '%s' prio:%d", impl,
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object->id, node->media, node->priority);
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}
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node->obj->obj.mask |= SM_NODE_CHANGE_MASK_PARAMS;
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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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spa_list_remove(&node->link);
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free(node->media);
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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 (strcmp(object->type, PW_TYPE_INTERFACE_Node) == 0)
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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(NAME" %p: can't handle global %d", impl, object->id);
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}
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else
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sm_media_session_schedule_rescan(impl->session);
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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(NAME " %p: remove global '%d'", impl, object->id);
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if (strcmp(object->type, PW_TYPE_INTERFACE_Node) == 0) {
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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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sm_media_session_schedule_rescan(impl->session);
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}
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struct find_data {
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struct impl *impl;
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struct node *target;
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struct node *node;
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bool exclusive;
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int priority;
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uint64_t plugged;
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};
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static int find_node(void *data, struct node *node)
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{
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struct find_data *find = data;
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struct impl *impl = find->impl;
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int priority = 0;
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uint64_t plugged = 0;
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pw_log_debug(NAME " %p: looking at node '%d' enabled:%d busy:%d exclusive:%d",
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impl, node->id, node->enabled, node->busy, node->exclusive);
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if (!node->enabled || node->type == NODE_TYPE_UNKNOWN)
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return 0;
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if (node->direction == find->target->direction) {
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pw_log_debug(".. same direction");
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return 0;
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}
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if (strcmp(node->media, find->target->media) != 0) {
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pw_log_debug(".. incompatible media %s <-> %s", node->media, find->target->media);
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return 0;
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}
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plugged = node->plugged;
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priority = node->priority;
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if ((find->exclusive && node->busy) || node->exclusive) {
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pw_log_debug(NAME " %p: node '%d' in use", impl, node->id);
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return 0;
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}
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pw_log_debug(NAME " %p: found node '%d' %"PRIu64" prio:%d", impl,
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node->id, plugged, priority);
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if (find->node == NULL ||
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priority > find->priority ||
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(priority == find->priority && plugged > find->plugged)) {
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pw_log_debug(NAME " %p: new best %d %" PRIu64, impl, priority, plugged);
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find->node = node;
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find->priority = priority;
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find->plugged = plugged;
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}
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return 0;
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}
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static int link_nodes(struct node *node, struct node *peer)
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{
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struct impl *impl = node->impl;
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struct pw_properties *props;
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pw_log_debug(NAME " %p: link nodes %d %d", impl, node->id, peer->id);
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if (node->direction == PW_DIRECTION_INPUT) {
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struct node *t = node;
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node = peer;
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peer = t;
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}
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props = pw_properties_new(NULL, NULL);
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pw_properties_setf(props, PW_KEY_LINK_OUTPUT_NODE, "%d", node->id);
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pw_properties_setf(props, PW_KEY_LINK_INPUT_NODE, "%d", peer->id);
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pw_log_debug(NAME " %p: node %d -> node %d", impl,
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node->id, peer->id);
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sm_media_session_create_links(impl->session, &props->dict);
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pw_properties_free(props);
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node->linked++;
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peer->linked++;
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return 0;
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}
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static int rescan_node(struct impl *impl, struct node *n)
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{
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struct spa_dict *props;
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const char *str;
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bool exclusive;
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struct find_data find;
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struct pw_node_info *info;
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struct node *peer;
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struct sm_object *obj;
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if (n->type == NODE_TYPE_DEVICE)
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return 0;
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if (!n->active)
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return 0;
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if (n->obj->info == NULL || n->obj->info->props == NULL) {
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pw_log_debug(NAME " %p: node %d has no properties", impl, n->id);
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return 0;
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}
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if (n->linked > 0) {
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pw_log_debug(NAME " %p: node %d is already linked", impl, n->id);
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return 0;
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}
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info = n->obj->info;
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props = info->props;
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str = spa_dict_lookup(props, PW_KEY_NODE_AUTOCONNECT);
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if (str == NULL || !pw_properties_parse_bool(str)) {
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pw_log_debug(NAME" %p: node %d does not need autoconnect", impl, n->id);
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return 0;
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}
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if (n->media == NULL) {
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pw_log_debug(NAME" %p: node %d has unknown media", impl, n->id);
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return 0;
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}
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|
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spa_zero(find);
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|
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if ((str = spa_dict_lookup(props, PW_KEY_NODE_EXCLUSIVE)) != NULL)
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exclusive = pw_properties_parse_bool(str);
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else
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exclusive = false;
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find.impl = impl;
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find.target = n;
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find.exclusive = exclusive;
|
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|
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pw_log_info(NAME " %p: exclusive:%d", impl, exclusive);
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|
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str = spa_dict_lookup(props, PW_KEY_NODE_TARGET);
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if (str != NULL) {
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uint32_t path_id = atoi(str);
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pw_log_info(NAME " %p: target:%d", impl, path_id);
|
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|
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if ((obj = sm_media_session_find_object(impl->session, path_id)) != NULL) {
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if (strcmp(obj->type, PW_TYPE_INTERFACE_Node) == 0) {
|
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peer = sm_object_get_data(obj, SESSION_KEY);
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goto do_link;
|
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}
|
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}
|
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}
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|
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spa_list_for_each(peer, &impl->node_list, link)
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find_node(&find, peer);
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|
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if (find.node == NULL) {
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struct sm_object *obj;
|
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|
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pw_log_warn(NAME " %p: no node found for %d", impl, n->id);
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str = spa_dict_lookup(props, PW_KEY_NODE_DONT_RECONNECT);
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if (str != NULL && pw_properties_parse_bool(str)) {
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// pw_registry_destroy(impl->registry, n->id);
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}
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obj = sm_media_session_find_object(impl->session, n->client_id);
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if (obj && strcmp(obj->type, PW_TYPE_INTERFACE_Client) == 0) {
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pw_client_error((struct pw_client*)obj->proxy,
|
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n->id, -ENOENT, "no node available");
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}
|
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return -ENOENT;
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||||
}
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peer = find.node;
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|
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if (exclusive && peer->busy) {
|
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pw_log_warn(NAME" %p: node %d busy, can't get exclusive access", impl, peer->id);
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return -EBUSY;
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}
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peer->exclusive = exclusive;
|
||||
|
||||
pw_log_debug(NAME" %p: linking to node '%d'", impl, peer->id);
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||||
|
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peer->busy = true;
|
||||
|
||||
do_link:
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||||
link_nodes(n, peer);
|
||||
return 1;
|
||||
}
|
||||
|
||||
static void session_rescan(void *data, int seq)
|
||||
{
|
||||
struct impl *impl = data;
|
||||
struct node *node;
|
||||
|
||||
clock_gettime(CLOCK_MONOTONIC, &impl->now);
|
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pw_log_debug(NAME" %p: rescan", impl);
|
||||
|
||||
spa_list_for_each(node, &impl->node_list, link)
|
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rescan_node(impl, node);
|
||||
}
|
||||
|
||||
static void session_destroy(void *data)
|
||||
{
|
||||
struct impl *impl = data;
|
||||
spa_hook_remove(&impl->listener);
|
||||
free(impl);
|
||||
}
|
||||
|
||||
static const struct sm_media_session_events session_events = {
|
||||
SM_VERSION_MEDIA_SESSION_EVENTS,
|
||||
.create = session_create,
|
||||
.remove = session_remove,
|
||||
.rescan = session_rescan,
|
||||
.destroy = session_destroy,
|
||||
};
|
||||
|
||||
int sm_policy_node_start(struct sm_media_session *session)
|
||||
{
|
||||
struct impl *impl;
|
||||
|
||||
impl = calloc(1, sizeof(struct impl));
|
||||
if (impl == NULL)
|
||||
return -errno;
|
||||
|
||||
impl->session = session;
|
||||
impl->context = session->context;
|
||||
|
||||
spa_list_init(&impl->node_list);
|
||||
|
||||
sm_media_session_add_listener(impl->session, &impl->listener, &session_events, impl);
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue