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-rw-r--r--src/tools/pw-reserve.c253
1 files changed, 253 insertions, 0 deletions
diff --git a/src/tools/pw-reserve.c b/src/tools/pw-reserve.c
new file mode 100644
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--- /dev/null
+++ b/src/tools/pw-reserve.c
@@ -0,0 +1,253 @@
+/* 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 "config.h"
+
+#include <getopt.h>
+#include <signal.h>
+#include <locale.h>
+
+#include <dbus/dbus.h>
+
+#include <spa/utils/result.h>
+#include <spa/support/dbus.h>
+
+#include "pipewire/pipewire.h"
+#include "pipewire/log.h"
+
+#include "reserve.h"
+
+struct impl {
+ struct pw_main_loop *mainloop;
+ struct pw_loop *loop;
+ struct pw_context *context;
+
+ struct spa_dbus *dbus;
+ struct spa_dbus_connection *dbus_connection;
+ DBusConnection *conn;
+
+ struct rd_device *device;
+};
+
+static void reserve_acquired(void *data, struct rd_device *d)
+{
+ printf("reserve acquired\n");
+}
+
+static void reserve_release(void *data, struct rd_device *d, int forced)
+{
+ struct impl *impl = data;
+ printf("reserve release\n");
+ rd_device_complete_release(impl->device, true);
+}
+
+static void reserve_busy(void *data, struct rd_device *d, const char *name, int32_t prio)
+{
+ printf("reserve busy %s, prio %d\n", name, prio);
+}
+
+static void reserve_available(void *data, struct rd_device *d, const char *name)
+{
+ printf("reserve available %s\n", name);
+}
+
+static const struct rd_device_callbacks reserve_callbacks = {
+ .acquired = reserve_acquired,
+ .release = reserve_release,
+ .busy = reserve_busy,
+ .available = reserve_available,
+};
+
+static void do_quit(void *data, int signal_number)
+{
+ struct impl *impl = data;
+ pw_main_loop_quit(impl->mainloop);
+}
+
+#define DEFAULT_APPNAME "pw-reserve"
+#define DEFAULT_PRIORITY 0
+
+static void show_help(const char *name, bool error)
+{
+ fprintf(error ? stderr : stdout, "%s [options]\n"
+ " -h, --help Show this help\n"
+ " --version Show version\n"
+ " -n, --name Name to reserve (Audio0, Midi0, Video0, ..)\n"
+ " -a, --appname Application Name (default %s)\n"
+ " -p, --priority Priority (default %d)\n"
+ " -m, --monitor Monitor only, don't try to acquire\n"
+ " -r, --release Request release when busy\n",
+ name, DEFAULT_APPNAME, DEFAULT_PRIORITY);
+}
+
+int main(int argc, char *argv[])
+{
+ struct impl impl = { 0, };
+ const struct spa_support *support;
+ uint32_t n_support;
+ const char *opt_name = NULL;
+ const char *opt_appname = DEFAULT_APPNAME;
+ bool opt_monitor = false;
+ bool opt_release = false;
+ int opt_priority= DEFAULT_PRIORITY;
+
+ int res = 0, c;
+ static const struct option long_options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, 'V' },
+ { "name", required_argument, NULL, 'n' },
+ { "app", required_argument, NULL, 'a' },
+ { "priority", required_argument, NULL, 'p' },
+ { "monitor", no_argument, NULL, 'm' },
+ { "release", no_argument, NULL, 'r' },
+ { NULL, 0, NULL, 0}
+ };
+
+ setlinebuf(stdout);
+
+ setlocale(LC_ALL, "");
+ pw_init(&argc, &argv);
+
+ while ((c = getopt_long(argc, argv, "hVn:a:p:mr", long_options, NULL)) != -1) {
+ switch (c) {
+ case 'h':
+ show_help(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 'n':
+ opt_name = optarg;
+ break;
+ case 'a':
+ opt_appname = optarg;
+ break;
+ case 'p':
+ opt_priority = atoi(optarg);
+ break;
+ case 'm':
+ opt_monitor = true;
+ break;
+ case 'r':
+ opt_release = true;
+ break;
+ default:
+ show_help(argv[0], true);
+ return -1;
+ }
+ }
+ if (opt_name == NULL) {
+ fprintf(stderr, "name must be given\n");
+ return -1;
+ }
+
+ impl.mainloop = pw_main_loop_new(NULL);
+ if (impl.mainloop == NULL) {
+ fprintf(stderr, "can't create mainloop: %m\n");
+ res = -errno;
+ goto exit;
+ }
+ impl.loop = pw_main_loop_get_loop(impl.mainloop);
+
+ pw_loop_add_signal(impl.loop, SIGINT, do_quit, &impl);
+ pw_loop_add_signal(impl.loop, SIGTERM, do_quit, &impl);
+
+ impl.context = pw_context_new(impl.loop, NULL, 0);
+ if (impl.context == NULL) {
+ fprintf(stderr, "can't create context: %m\n");
+ res = -errno;
+ goto exit;
+ }
+
+ support = pw_context_get_support(impl.context, &n_support);
+
+ impl.dbus = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_DBus);
+ if (impl.dbus)
+ impl.dbus_connection = spa_dbus_get_connection(impl.dbus, SPA_DBUS_TYPE_SESSION);
+ if (impl.dbus_connection == NULL) {
+ fprintf(stderr, "no dbus connection: %m\n");
+ res = -errno;
+ goto exit;
+ }
+ impl.conn = spa_dbus_connection_get(impl.dbus_connection);
+ if (impl.conn == NULL) {
+ fprintf(stderr, "no dbus connection: %m\n");
+ res = -errno;
+ goto exit;
+ }
+
+ /* XXX: we don't handle dbus reconnection yet, so ref the handle instead */
+ dbus_connection_ref(impl.conn);
+
+ impl.device = rd_device_new(impl.conn,
+ opt_name,
+ opt_appname,
+ opt_priority,
+ &reserve_callbacks, &impl);
+
+ if (!opt_monitor) {
+ res = rd_device_acquire(impl.device);
+ if (res == -EBUSY) {
+ printf("device %s is busy\n", opt_name);
+ if (opt_release) {
+ printf("doing RequestRelease on %s\n", opt_name);
+ res = rd_device_request_release(impl.device);
+ } else {
+ printf("use -r to attempt to release\n");
+ }
+ } else if (res < 0) {
+ printf("Device %s can not be acquired: %s\n", opt_name,
+ spa_strerror(res));
+ }
+ }
+
+ if (res >= 0)
+ pw_main_loop_run(impl.mainloop);
+
+ if (!opt_monitor) {
+ if (opt_release) {
+ printf("doing Release on %s\n", opt_name);
+ rd_device_release(impl.device);
+ }
+ }
+
+exit:
+ if (impl.conn)
+ dbus_connection_unref(impl.conn);
+ if (impl.dbus)
+ spa_dbus_connection_destroy(impl.dbus_connection);
+ if (impl.context)
+ pw_context_destroy(impl.context);
+ if (impl.mainloop)
+ pw_main_loop_destroy(impl.mainloop);
+
+ pw_deinit();
+
+ return res;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 12:55:22 +0000