Adding upstream version 0.3.65.upstream/0.3.65upstream

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

1 files changed, 284 insertions, 0 deletions

diff --git a/src/tools/pw-loopback.c b/src/tools/pw-loopback.c
new file mode 100644
index 0000000..5f39be6
--- /dev/null
+++ b/src/tools/pw-loopback.c
@@ -0,0 +1,284 @@
+/* PipeWire
+ *
+ * Copyright © 2021 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 <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <getopt.h>
+#include <limits.h>
+#include <math.h>
+#include <locale.h>
+
+#include <spa/utils/result.h>
+#include <spa/pod/builder.h>
+#include <spa/param/audio/format-utils.h>
+#include <spa/param/audio/raw.h>
+#include <spa/utils/json.h>
+
+#include <pipewire/pipewire.h>
+#include <pipewire/impl.h>
+
+#define DEFAULT_RATE		48000
+#define DEFAULT_CHANNELS	2
+#define DEFAULT_CHANNEL_MAP	"[ FL, FR ]"
+
+struct data {
+	struct pw_main_loop *loop;
+	struct pw_context *context;
+
+	struct pw_impl_module *module;
+	struct spa_hook module_listener;
+
+	const char *opt_node_name;
+	const char *opt_group_name;
+	const char *opt_channel_map;
+
+	uint32_t channels;
+	uint32_t latency;
+	float delay;
+
+	struct pw_properties *capture_props;
+	struct pw_properties *playback_props;
+};
+
+static void do_quit(void *data, int signal_number)
+{
+	struct data *d = data;
+	pw_main_loop_quit(d->loop);
+}
+
+static void module_destroy(void *data)
+{
+	struct data *d = data;
+	spa_hook_remove(&d->module_listener);
+	d->module = NULL;
+	pw_main_loop_quit(d->loop);
+}
+
+static const struct pw_impl_module_events module_events = {
+	PW_VERSION_IMPL_MODULE_EVENTS,
+	.destroy = module_destroy
+};
+
+
+static void show_help(struct data *data, const char *name, bool error)
+{
+        fprintf(error ? stderr : stdout, "%s [options]\n"
+		"  -h, --help                            Show this help\n"
+		"      --version                         Show version\n"
+		"  -r, --remote                          Remote daemon name\n"
+		"  -n, --name                            Node name (default '%s')\n"
+		"  -g, --group                           Node group (default '%s')\n"
+		"  -c, --channels                        Number of channels (default %d)\n"
+		"  -m, --channel-map                     Channel map (default '%s')\n"
+		"  -l, --latency                         Desired latency in ms\n"
+		"  -d, --delay                           Desired delay in float s\n"
+		"  -C  --capture                         Capture source to connect to (name or serial)\n"
+		"      --capture-props                   Capture stream properties\n"
+		"  -P  --playback                        Playback sink to connect to (name or serial)\n"
+		"      --playback-props                  Playback stream properties\n",
+		name,
+		data->opt_node_name,
+		data->opt_group_name,
+		data->channels,
+		data->opt_channel_map);
+}
+
+int main(int argc, char *argv[])
+{
+	struct data data = { 0 };
+	struct pw_loop *l;
+	const char *opt_remote = NULL;
+	char cname[256], value[256];
+	char *args;
+	size_t size;
+	FILE *f;
+	static const struct option long_options[] = {
+		{ "help",		no_argument,		NULL, 'h' },
+		{ "version",		no_argument,		NULL, 'V' },
+		{ "remote",		required_argument,	NULL, 'r' },
+		{ "group",		required_argument,	NULL, 'g' },
+		{ "name",		required_argument,	NULL, 'n' },
+		{ "channels",		required_argument,	NULL, 'c' },
+		{ "latency",		required_argument,	NULL, 'l' },
+		{ "delay",		required_argument,	NULL, 'd' },
+		{ "capture",		required_argument,	NULL, 'C' },
+		{ "playback",		required_argument,	NULL, 'P' },
+		{ "capture-props",	required_argument,	NULL, 'i' },
+		{ "playback-props",	required_argument,	NULL, 'o' },
+		{ NULL, 0, NULL, 0}
+	};
+	int c, res = -1;
+
+	setlocale(LC_ALL, "");
+	pw_init(&argc, &argv);
+
+	data.channels = DEFAULT_CHANNELS;
+	data.opt_channel_map = DEFAULT_CHANNEL_MAP;
+	data.opt_group_name = pw_get_client_name();
+	if (snprintf(cname, sizeof(cname), "%s-%zd", argv[0], (size_t) getpid()) > 0)
+		data.opt_group_name = cname;
+	data.opt_node_name = data.opt_group_name;
+
+	data.capture_props = pw_properties_new(NULL, NULL);
+	data.playback_props = pw_properties_new(NULL, NULL);
+	if (data.capture_props == NULL || data.playback_props == NULL) {
+		fprintf(stderr, "can't create properties: %m\n");
+		goto exit;
+	}
+
+	while ((c = getopt_long(argc, argv, "hVr:n:g:c:m:l:d:C:P:i:o:", long_options, NULL)) != -1) {
+		switch (c) {
+		case 'h':
+			show_help(&data, argv[0], false);
+			return 0;
+		case 'V':
+			printf("%s\n"
+				"Compiled with libpipewire %s\n"
+				"Linked with libpipewire %s\n",
+				argv[0],
+				pw_get_headers_version(),
+				pw_get_library_version());
+			return 0;
+		case 'r':
+			opt_remote = optarg;
+			break;
+		case 'n':
+			data.opt_node_name = optarg;
+			break;
+		case 'g':
+			data.opt_group_name = optarg;
+			break;
+		case 'c':
+			data.channels = atoi(optarg);
+			break;
+		case 'm':
+			data.opt_channel_map = optarg;
+			break;
+		case 'l':
+			data.latency = atoi(optarg) * DEFAULT_RATE / SPA_MSEC_PER_SEC;
+			break;
+		case 'd':
+			data.delay = atof(optarg);
+			break;
+		case 'C':
+			pw_properties_set(data.capture_props, PW_KEY_TARGET_OBJECT, optarg);
+			break;
+		case 'P':
+			pw_properties_set(data.playback_props, PW_KEY_TARGET_OBJECT, optarg);
+			break;
+		case 'i':
+			pw_properties_update_string(data.capture_props, optarg, strlen(optarg));
+			break;
+		case 'o':
+			pw_properties_update_string(data.playback_props, optarg, strlen(optarg));
+			break;
+		default:
+			show_help(&data, argv[0], true);
+			return -1;
+		}
+	}
+
+	data.loop = pw_main_loop_new(NULL);
+	if (data.loop == NULL) {
+		fprintf(stderr, "can't create main loop: %m\n");
+		goto exit;
+	}
+
+	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);
+	if (data.context == NULL) {
+		fprintf(stderr, "can't create context: %m\n");
+		goto exit;
+	}
+
+
+        if ((f = open_memstream(&args, &size)) == NULL) {
+		fprintf(stderr, "can't open memstream: %m\n");
+		goto exit;
+	}
+
+	fprintf(f, "{");
+
+	if (opt_remote != NULL)
+		fprintf(f, " remote.name = \"%s\"", opt_remote);
+	if (data.latency != 0)
+		fprintf(f, " node.latency = %u/%u", data.latency, DEFAULT_RATE);
+	if (data.delay != 0.0f)
+		fprintf(f, " target.delay.sec = %s",
+				spa_json_format_float(value, sizeof(value), data.delay));
+	if (data.channels != 0)
+		fprintf(f, " audio.channels = %u", data.channels);
+	if (data.opt_channel_map != NULL)
+		fprintf(f, " audio.position = %s", data.opt_channel_map);
+	if (data.opt_node_name != NULL)
+		fprintf(f, " node.name = %s", data.opt_node_name);
+
+	if (data.opt_group_name != NULL) {
+		pw_properties_set(data.capture_props, PW_KEY_NODE_GROUP, data.opt_group_name);
+		pw_properties_set(data.playback_props, PW_KEY_NODE_GROUP, data.opt_group_name);
+	}
+
+	fprintf(f, " capture.props = {");
+	pw_properties_serialize_dict(f, &data.capture_props->dict, 0);
+	fprintf(f, " } playback.props = {");
+	pw_properties_serialize_dict(f, &data.playback_props->dict, 0);
+	fprintf(f, " } }");
+	fclose(f);
+
+	pw_log_info("loading module with %s", args);
+
+	data.module = pw_context_load_module(data.context,
+			"libpipewire-module-loopback", args,
+			NULL);
+	free(args);
+
+	if (data.module == NULL) {
+		fprintf(stderr, "can't load module: %m\n");
+		goto exit;
+	}
+
+	pw_impl_module_add_listener(data.module,
+			&data.module_listener, &module_events, &data);
+
+	pw_main_loop_run(data.loop);
+
+	res = 0;
+exit:
+	if (data.module)
+		pw_impl_module_destroy(data.module);
+	if (data.context)
+		pw_context_destroy(data.context);
+	if (data.loop)
+		pw_main_loop_destroy(data.loop);
+	pw_properties_free(data.capture_props);
+	pw_properties_free(data.playback_props);
+	pw_deinit();
+
+	return res;
+}