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examples: add another example

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See #3272
This commit is contained in:
Wim Taymans 2023-06-06 19:50:58 +02:00
parent f9b2df25c7
commit de211f4e89
2 changed files with 127 additions and 0 deletions
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126
src/examples/internal.c Normal file
View file

@ -0,0 +1,126 @@
/* PipeWire */
/* SPDX-FileCopyrightText: Copyright © 2023 Wim Taymans */
/* SPDX-License-Identifier: MIT */
/*
[title]
In process pipewire graph
[title]
*/
#include <stdio.h>
#include <errno.h>
#include <signal.h>
#include <math.h>
#include <spa/utils/names.h>
#include <pipewire/pipewire.h>
#include <pipewire/impl.h>
struct data {
struct pw_main_loop *loop;
struct pw_context *context;
struct pw_core *core;
struct pw_proxy *source;
struct pw_proxy *sink;
struct pw_proxy *link;
int res;
};
static void do_quit(void *userdata, int signal_number)
{
struct data *data = userdata;
pw_main_loop_quit(data->loop);
}
int main(int argc, char *argv[])
{
struct data data = { 0, };
struct pw_properties *props;
const char *dev = "hw:0";
pw_init(&argc, &argv);
data.loop = pw_main_loop_new(NULL);
if (argc > 1)
dev = argv[1];
pw_loop_add_signal(pw_main_loop_get_loop(data.loop), SIGINT, do_quit, &data);
pw_loop_add_signal(pw_main_loop_get_loop(data.loop), SIGTERM, do_quit, &data);
data.context = pw_context_new(pw_main_loop_get_loop(data.loop),
pw_properties_new(
PW_KEY_CONFIG_NAME, "client-rt.conf",
NULL), 0);
pw_context_load_module(data.context, "libpipewire-module-spa-node-factory", NULL, NULL);
pw_context_load_module(data.context, "libpipewire-module-link-factory", NULL, NULL);
data.core = pw_context_connect_self(data.context, NULL, 0);
if (data.core == NULL) {
fprintf(stderr, "can't connect: %m\n");
data.res = -errno;
goto cleanup;
}
props = pw_properties_new(
SPA_KEY_LIBRARY_NAME, "audiotestsrc/libspa-audiotestsrc",
SPA_KEY_FACTORY_NAME, "audiotestsrc",
PW_KEY_NODE_NAME, "test_source",
"Spa:Pod:Object:Param:Props:live", "false",
NULL);
data.source = pw_core_create_object(data.core,
"spa-node-factory",
PW_TYPE_INTERFACE_Node,
PW_VERSION_NODE,
&props->dict, 0);
pw_properties_free(props);
props = pw_properties_new(
SPA_KEY_LIBRARY_NAME, "alsa/libspa-alsa",
SPA_KEY_FACTORY_NAME, SPA_NAME_API_ALSA_PCM_SINK,
PW_KEY_NODE_NAME, "alsa_sink",
"api.alsa.path", dev,
"priority.driver", "1000",
NULL);
data.sink = pw_core_create_object(data.core,
"spa-node-factory",
PW_TYPE_INTERFACE_Node,
PW_VERSION_NODE,
&props->dict, 0);
while (true) {
if (pw_proxy_get_bound_id(data.source) != SPA_ID_INVALID &&
pw_proxy_get_bound_id(data.sink) != SPA_ID_INVALID)
break;
pw_loop_iterate(pw_main_loop_get_loop(data.loop), -1);
}
pw_properties_clear(props);
pw_properties_setf(props,
PW_KEY_LINK_OUTPUT_NODE, "%d", pw_proxy_get_bound_id(data.source));
pw_properties_setf(props,
PW_KEY_LINK_INPUT_NODE, "%d", pw_proxy_get_bound_id(data.sink));
data.link = pw_core_create_object(data.core,
"link-factory",
PW_TYPE_INTERFACE_Link,
PW_VERSION_LINK,
&props->dict, 0);
pw_properties_free(props);
pw_main_loop_run(data.loop);
cleanup:
pw_context_destroy(data.context);
pw_main_loop_destroy(data.loop);
pw_deinit();
return data.res;
}

1
src/examples/meson.build
View file

@ -13,6 +13,7 @@ examples = [
'video-src-reneg',
'video-src-fixate',
'video-play-fixate',
'internal',
'export-sink',
'export-source',
'export-spa',