1 files changed, 224 insertions, 0 deletions
diff --git a/src/modules/module-protocol-pulse/modules/module-rtp-send.c b/src/modules/module-protocol-pulse/modules/module-rtp-send.c
new file mode 100644
index 0000000..b9aad05
--- /dev/null
+++ b/src/modules/module-protocol-pulse/modules/module-rtp-send.c
@@ -0,0 +1,224 @@
+/* PipeWire
+ *
+ * Copyright © 2022 Wim Taymans <wim.taymans@gmail.com>
+ *
+ * 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.
+ */
+
+#include <spa/utils/hook.h>
+#include <pipewire/pipewire.h>
+
+#include "../defs.h"
+#include "../module.h"
+
+#define NAME "rtp-send"
+
+PW_LOG_TOPIC_STATIC(mod_topic, "mod." NAME);
+#define PW_LOG_TOPIC_DEFAULT mod_topic
+
+struct module_rtp_send_data {
+	struct module *module;
+
+	struct spa_hook mod_listener;
+	struct pw_impl_module *mod;
+
+	struct pw_properties *stream_props;
+	struct pw_properties *global_props;
+	struct spa_audio_info_raw info;
+};
+
+static void module_destroy(void *data)
+{
+	struct module_rtp_send_data *d = data;
+	spa_hook_remove(&d->mod_listener);
+	d->mod = NULL;
+	module_schedule_unload(d->module);
+}
+
+static const struct pw_impl_module_events module_events = {
+	PW_VERSION_IMPL_MODULE_EVENTS,
+	.destroy = module_destroy
+};
+
+static int module_rtp_send_load(struct module *module)
+{
+	struct module_rtp_send_data *data = module->user_data;
+	FILE *f;
+	char *args;
+	size_t size;
+	uint32_t i;
+
+	pw_properties_setf(data->stream_props, "pulse.module.id",
+			"%u", module->index);
+
+	if ((f = open_memstream(&args, &size)) == NULL)
+		return -errno;
+
+	fprintf(f, "{");
+	pw_properties_serialize_dict(f, &data->global_props->dict, 0);
+	if (data->info.format != 0)
+		fprintf(f, " \"audio.format\": \"%s\"", format_id2name(data->info.format));
+	if (data->info.rate != 0)
+		fprintf(f, " \"audio.rate\": %u,", data->info.rate);
+	if (data->info.channels != 0) {
+		fprintf(f, " \"audio.channels\": %u,", data->info.channels);
+		if (!(data->info.flags & SPA_AUDIO_FLAG_UNPOSITIONED)) {
+			fprintf(f, " \"audio.position\": [ ");
+			for (i = 0; i < data->info.channels; i++)
+				fprintf(f, "%s\"%s\"", i == 0 ? "" : ",",
+					channel_id2name(data->info.position[i]));
+			fprintf(f, " ],");
+		}
+	}
+	fprintf(f, " stream.props = {");
+	pw_properties_serialize_dict(f, &data->stream_props->dict, 0);
+	fprintf(f, " } }");
+	fclose(f);
+
+	data->mod = pw_context_load_module(module->impl->context,
+			"libpipewire-module-rtp-sink",
+			args, NULL);
+
+	free(args);
+
+	if (data->mod == NULL)
+		return -errno;
+
+	pw_impl_module_add_listener(data->mod,
+			&data->mod_listener,
+			&module_events, data);
+
+	return 0;
+}
+
+static int module_rtp_send_unload(struct module *module)
+{
+	struct module_rtp_send_data *d = module->user_data;
+
+	if (d->mod) {
+		spa_hook_remove(&d->mod_listener);
+		pw_impl_module_destroy(d->mod);
+		d->mod = NULL;
+	}
+
+	pw_properties_free(d->global_props);
+	pw_properties_free(d->stream_props);
+
+	return 0;
+}
+
+static const struct spa_dict_item module_rtp_send_info[] = {
+	{ PW_KEY_MODULE_AUTHOR, "Wim Taymans <wim.taymans@gmail.com>" },
+	{ PW_KEY_MODULE_DESCRIPTION, "Read data from source and send it to the network via RTP/SAP/SDP" },
+	{ PW_KEY_MODULE_USAGE,	"source=<name of the source> "
+				"format=<sample format> "
+				"channels=<number of channels> "
+				"rate=<sample rate> "
+				"destination_ip=<destination IP address> "
+				"source_ip=<source IP address> "
+				"port=<port number> "
+				"mtu=<maximum transfer unit> "
+				"loop=<loopback to local host?> "
+				"ttl=<ttl value> "
+				"inhibit_auto_suspend=<always|never|only_with_non_monitor_sources> "
+				"stream_name=<name of the stream> "
+				"enable_opus=<enable OPUS codec>" },
+	{ PW_KEY_MODULE_VERSION, PACKAGE_VERSION },
+};
+
+static int module_rtp_send_prepare(struct module * const module)
+{
+	struct module_rtp_send_data * const d = module->user_data;
+	struct pw_properties * const props = module->props;
+	struct pw_properties *stream_props = NULL, *global_props = NULL;
+	struct spa_audio_info_raw info = { 0 };
+	const char *str;
+	int res;
+
+	PW_LOG_TOPIC_INIT(mod_topic);
+
+	stream_props = pw_properties_new(NULL, NULL);
+	global_props = pw_properties_new(NULL, NULL);
+	if (!stream_props || !global_props) {
+		res = -errno;
+		goto out;
+	}
+
+	if ((str = pw_properties_get(props, "source")) != NULL) {
+		if (spa_strendswith(str, ".monitor")) {
+			pw_properties_setf(stream_props, PW_KEY_TARGET_OBJECT,
+					"%.*s", (int)strlen(str)-8, str);
+			pw_properties_set(stream_props, PW_KEY_STREAM_CAPTURE_SINK,
+					"true");
+		} else {
+			pw_properties_set(stream_props, PW_KEY_TARGET_OBJECT, str);
+		}
+	}
+	if (module_args_to_audioinfo(module->impl, props, &info) < 0) {
+		res = -EINVAL;
+		goto out;
+	}
+	info.format = 0;
+	if ((str = pw_properties_get(props, "format")) != NULL) {
+		if ((info.format = format_paname2id(str, strlen(str))) ==
+				SPA_AUDIO_FORMAT_UNKNOWN) {
+			pw_log_error("unknown format %s", str);
+			res = -EINVAL;
+			goto out;
+		}
+	}
+
+	if ((str = pw_properties_get(props, "destination_ip")) != NULL)
+		pw_properties_set(global_props, "destination.ip", str);
+	if ((str = pw_properties_get(props, "source_ip")) != NULL)
+		pw_properties_set(global_props, "source.ip", str);
+	if ((str = pw_properties_get(props, "port")) != NULL)
+		pw_properties_set(global_props, "destination.port", str);
+	if ((str = pw_properties_get(props, "mtu")) != NULL)
+		pw_properties_set(global_props, "net.mtu", str);
+	if ((str = pw_properties_get(props, "loop")) != NULL)
+		pw_properties_set(global_props, "net.loop",
+				module_args_parse_bool(str) ? "true" : "false");
+	if ((str = pw_properties_get(props, "ttl")) != NULL)
+		pw_properties_set(global_props, "net.ttl", str);
+	if ((str = pw_properties_get(props, "stream_name")) != NULL)
+		pw_properties_set(global_props, "sess.name", str);
+
+	d->module = module;
+	d->stream_props = stream_props;
+	d->global_props = global_props;
+	d->info = info;
+
+	return 0;
+out:
+	pw_properties_free(stream_props);
+	pw_properties_free(global_props);
+
+	return res;
+}
+
+DEFINE_MODULE_INFO(module_rtp_send) = {
+	.name = "module-rtp-send",
+	.prepare = module_rtp_send_prepare,
+	.load = module_rtp_send_load,
+	.unload = module_rtp_send_unload,
+	.properties = &SPA_DICT_INIT_ARRAY(module_rtp_send_info),
+	.data_size = sizeof(struct module_rtp_send_data),
+};