pipewire: make pipewire a generic launcher

It uses the basename as the config file so you can symlink to it
and make new custom servers.

src/daemon/meson.build

@@ -1,5 +1,5 @@
 pipewire_daemon_sources = [
-  'main.c',
+  'pipewire.c',
 ]
 
 pipewire_c_args = [
@@ -54,7 +54,7 @@ executable('pipewire',
 )
 
 executable('pipewire-pulse',
-  'pipewire-pulse.c',
+  pipewire_daemon_sources,
   install: true,
   c_args : pipewire_c_args,
   include_directories : [configinc, spa_inc],

src/daemon/pipewire-pulse.c

@@ -1,117 +0,0 @@
-/* PipeWire
- *
- * Copyright © 2020 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.
- */
-
-#include <signal.h>
-#include <getopt.h>
-
-#include <spa/utils/result.h>
-
-#include <pipewire/pipewire.h>
-
-#include "config.h"
-
-static const char *config_name = "pipewire-pulse.conf";
-
-static void do_quit(void *data, int signal_number)
-{
-	struct pw_main_loop *loop = data;
-	pw_main_loop_quit(loop);
-}
-
-static void show_help(const char *name)
-{
-	fprintf(stdout, "%s [options]\n\n"
-		"Start a pulseaudio compatible daemon.\n\n"
-		"  -h, --help                            Show this help\n"
-		"      --version                         Show version\n"
-		"  -c, --config                          Load config (Default %s)\n",
-		name,
-		config_name);
-}
-
-int main(int argc, char *argv[])
-{
-	struct pw_context *context;
-	struct pw_main_loop *loop;
-	struct pw_properties *properties;
-	static const struct option long_options[] = {
-		{ "help",	no_argument,		NULL, 'h' },
-		{ "version",	no_argument,		NULL, 'V' },
-		{ "config",	required_argument,	NULL, 'c' },
-		{ NULL, 0, NULL, 0}
-	};
-	int c;
-
-	pw_init(&argc, &argv);
-
-	while ((c = getopt_long(argc, argv, "hVc:", long_options, NULL)) != -1) {
-		switch (c) {
-		case 'h':
-			show_help(argv[0]);
-			return 0;
-		case 'V':
-			fprintf(stdout, "%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 'c':
-			config_name = optarg;
-			break;
-		default:
-			return -1;
-		}
-	}
-
-	properties = pw_properties_new(
-				PW_KEY_CONFIG_NAME, config_name,
-				NULL);
-
-	loop = pw_main_loop_new(&properties->dict);
-	if (loop == NULL) {
-		pw_log_error("failed to create main-loop: %m");
-		return -1;
-	}
-
-	pw_loop_add_signal(pw_main_loop_get_loop(loop), SIGINT, do_quit, loop);
-	pw_loop_add_signal(pw_main_loop_get_loop(loop), SIGTERM, do_quit, loop);
-
-	context = pw_context_new(pw_main_loop_get_loop(loop), properties, 0);
-	if (context == NULL) {
-		pw_log_error("failed to create context: %m");
-		return -1;
-	}
-
-	pw_log_info("start main loop");
-	pw_main_loop_run(loop);
-	pw_log_info("leave main loop");
-
-	pw_context_destroy(context);
-	pw_main_loop_destroy(loop);
-	pw_deinit();
-
-	return 0;
-}

src/daemon/pipewire.c

@@ -22,6 +22,7 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
+#include <limits.h>
 #include <signal.h>
 #include <getopt.h>
 
@@ -30,15 +31,13 @@
 
 #include "config.h"
 
-static const char *config_name = "pipewire.conf";
-
 static void do_quit(void *data, int signal_number)
 {
 	struct pw_main_loop *loop = data;
 	pw_main_loop_quit(loop);
 }
 
-static void show_help(const char *name)
+static void show_help(const char *name, const char *config_name)
 {
 	fprintf(stdout, "%s [options]\n"
 		"  -h, --help                            Show this help\n"
@@ -61,16 +60,21 @@ int main(int argc, char *argv[])
 		{ NULL, 0, NULL, 0}
 	};
 	int c;
+	char path[PATH_MAX];
+	const char *config_name;
 
 	if (setenv("PIPEWIRE_INTERNAL", "1", 1) < 0)
 		fprintf(stderr, "can't set PIPEWIRE_INTERNAL env: %m");
 
+	snprintf(path, sizeof(path), "%s.conf", argv[0]);
+	config_name = basename(path);
+
 	pw_init(&argc, &argv);
 
 	while ((c = getopt_long(argc, argv, "hVc:", long_options, NULL)) != -1) {
 		switch (c) {
 		case 'h':
-			show_help(argv[0]);
+			show_help(argv[0], config_name);
 			return 0;
 		case 'V':
 			fprintf(stdout, "%s\n"