Adding upstream version 0.3.65.upstream/0.3.65upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 183 insertions, 0 deletions

diff --git a/src/examples/export-spa.c b/src/examples/export-spa.c
new file mode 100644
index 0000000..e2f27cf
--- /dev/null
+++ b/src/examples/export-spa.c
@@ -0,0 +1,183 @@
+/* PipeWire
+ *
+ * Copyright © 2018 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ [title]
+ Exporting and loading a SPA node, using \ref api_pw_core.
+ [title]
+ */
+
+#include <stdio.h>
+#include <sys/mman.h>
+#include <signal.h>
+
+#include <spa/utils/result.h>
+#include <spa/param/video/format-utils.h>
+#include <spa/param/props.h>
+
+#include <pipewire/impl.h>
+
+struct data {
+	struct pw_main_loop *loop;
+
+	struct pw_context *context;
+
+	struct pw_core *core;
+	struct spa_hook core_listener;
+
+	struct spa_node *node;
+	const char *library;
+	const char *factory;
+	const char *path;
+
+	struct pw_proxy *proxy;
+	struct spa_hook proxy_listener;
+	uint32_t id;
+};
+
+static void proxy_event_bound(void *_data, uint32_t global_id)
+{
+	struct data *data = _data;
+	if (data->id != global_id) {
+		printf("node id: %u\n", global_id);
+		data->id = global_id;
+	}
+}
+
+static const struct pw_proxy_events proxy_events = {
+	PW_VERSION_PROXY_EVENTS,
+	.bound = proxy_event_bound,
+};
+
+static int make_node(struct data *data)
+{
+	struct pw_properties *props;
+	struct spa_handle *hndl;
+	void *iface;
+	int res;
+
+        props = pw_properties_new(SPA_KEY_LIBRARY_NAME, data->library,
+                                  SPA_KEY_FACTORY_NAME, data->factory,
+				  NULL);
+
+
+	hndl = pw_context_load_spa_handle(data->context, data->factory, &props->dict);
+	if (hndl == NULL)
+		return -errno;
+
+	if ((res = spa_handle_get_interface(hndl, SPA_TYPE_INTERFACE_Node, &iface)) < 0)
+		return res;
+
+	data->node = iface;
+
+	if (data->path) {
+		pw_properties_set(props, PW_KEY_NODE_AUTOCONNECT, "true");
+		pw_properties_set(props, PW_KEY_TARGET_OBJECT, data->path);
+	}
+
+	data->proxy = pw_core_export(data->core,
+			SPA_TYPE_INTERFACE_Node, &props->dict,
+			data->node, 0);
+	pw_properties_free(props);
+
+	if (data->proxy == NULL)
+		return -errno;
+
+	pw_proxy_add_listener(data->proxy,
+			&data->proxy_listener, &proxy_events, data);
+
+	return 0;
+}
+
+static void on_core_error(void *data, uint32_t id, int seq, int res, const char *message)
+{
+	struct data *d = data;
+
+	pw_log_error("error id:%u seq:%d res:%d (%s): %s",
+			id, seq, res, spa_strerror(res), message);
+
+	if (id == PW_ID_CORE)
+		pw_main_loop_quit(d->loop);
+}
+
+static const struct pw_core_events core_events = {
+	PW_VERSION_CORE_EVENTS,
+	.error = on_core_error,
+};
+
+static void do_quit(void *data, int signal_number)
+{
+        struct data *d = data;
+	pw_main_loop_quit(d->loop);
+}
+
+int main(int argc, char *argv[])
+{
+	struct data data = { 0, };
+	struct pw_loop *l;
+
+	pw_init(&argc, &argv);
+
+	if (argc < 3) {
+		fprintf(stderr, "usage: %s <library> <factory> [path]\n\n"
+				"\texample: %s v4l2/libspa-v4l2 api.v4l2.source\n\n",
+				argv[0], argv[0]);
+		return -1;
+	}
+
+	data.loop = pw_main_loop_new(NULL);
+	l = pw_main_loop_get_loop(data.loop);
+        pw_loop_add_signal(l, SIGINT, do_quit, &data);
+        pw_loop_add_signal(l, SIGTERM, do_quit, &data);
+	data.context = pw_context_new(l, NULL, 0);
+	data.library = argv[1];
+	data.factory = argv[2];
+	if (argc > 3)
+		data.path = argv[3];
+
+	pw_context_load_module(data.context, "libpipewire-module-spa-node-factory", NULL, NULL);
+
+        data.core = pw_context_connect(data.context, NULL, 0);
+	if (data.core == NULL) {
+		printf("can't connect: %m\n");
+		return -1;
+	}
+	pw_core_add_listener(data.core,
+				   &data.core_listener,
+				   &core_events, &data);
+
+	if (make_node(&data) < 0) {
+		pw_log_error("can't make node");
+		return -1;
+	}
+
+	pw_main_loop_run(data.loop);
+
+	pw_proxy_destroy(data.proxy);
+	pw_core_disconnect(data.core);
+	pw_context_destroy(data.context);
+	pw_main_loop_destroy(data.loop);
+
+	return 0;
+}