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Use remote to join nodes on remote graphs

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Make a new method that can take a local node and run it in a remote
pipeline. This basically replaces all functionality of the streams
and more.
Add 2 examples for exporting a sink and a v4l2 node
Make some more things const
Cleanups
Make it possible to do things when the node needs scheduling. The
default node will schedule the local pipeline but the remote node might
also schedule the remote pipeline.
This commit is contained in:
Wim Taymans 2017-07-25 19:52:31 +02:00
parent 589e3d977c
commit 3d9f28c676
40 changed files with 1591 additions and 138 deletions
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140
src/examples/export-v4l2.c Normal file
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/* PipeWire
* Copyright (C) 2017 Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <sys/mman.h>
#include <SDL2/SDL.h>
#include <spa/type-map.h>
#include <spa/format-utils.h>
#include <spa/video/format-utils.h>
#include <spa/format-builder.h>
#include <spa/props.h>
#include <spa/lib/debug.h>
#include <pipewire/pipewire.h>
#include <pipewire/sig.h>
#include <pipewire/module.h>
#include <pipewire/node-factory.h>
struct type {
uint32_t format;
uint32_t props;
struct spa_type_meta meta;
struct spa_type_data data;
struct spa_type_media_type media_type;
struct spa_type_media_subtype media_subtype;
struct spa_type_format_video format_video;
struct spa_type_video_format video_format;
};
static inline void init_type(struct type *type, struct spa_type_map *map)
{
type->format = spa_type_map_get_id(map, SPA_TYPE__Format);
type->props = spa_type_map_get_id(map, SPA_TYPE__Props);
spa_type_meta_map(map, &type->meta);
spa_type_data_map(map, &type->data);
spa_type_media_type_map(map, &type->media_type);
spa_type_media_subtype_map(map, &type->media_subtype);
spa_type_format_video_map(map, &type->format_video);
spa_type_video_format_map(map, &type->video_format);
}
struct data {
struct type type;
bool running;
struct pw_loop *loop;
struct pw_core *core;
struct pw_remote *remote;
struct pw_listener on_state_changed;
struct pw_node *node;
};
static void make_node(struct data *data)
{
struct pw_node_factory *factory;
struct pw_properties *props;
factory = pw_core_find_node_factory(data->core, "spa-node-factory");
props = pw_properties_new("spa.library.name", "v4l2/libspa-v4l2",
"spa.factory.name", "v4l2-source", NULL);
data->node = pw_node_factory_create_node(factory, NULL, "v4l2-source", props);
pw_node_export(data->node);
pw_remote_export(data->remote, data->node);
}
static void on_state_changed(struct pw_listener *listener, struct pw_remote *remote)
{
struct data *data = SPA_CONTAINER_OF(listener, struct data, on_state_changed);
switch (remote->state) {
case PW_REMOTE_STATE_ERROR:
printf("remote error: %s\n", remote->error);
data->running = false;
break;
case PW_REMOTE_STATE_CONNECTED:
make_node(data);
break;
default:
printf("remote state: \"%s\"\n", pw_remote_state_as_string(remote->state));
break;
}
}
int main(int argc, char *argv[])
{
struct data data = { 0, };
pw_init(&argc, &argv);
data.loop = pw_loop_new();
data.running = true;
data.core = pw_core_new(data.loop, NULL);
data.remote = pw_remote_new(data.core, NULL);
pw_module_load(data.core, "libpipewire-module-spa-node-factory", NULL);
init_type(&data.type, data.core->type.map);
spa_debug_set_type_map(data.core->type.map);
pw_signal_add(&data.remote->state_changed, &data.on_state_changed, on_state_changed);
pw_remote_connect(data.remote);
pw_loop_enter(data.loop);
while (data.running) {
pw_loop_iterate(data.loop, -1);
}
pw_loop_leave(data.loop);
pw_loop_destroy(data.loop);
return 0;
}