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/* 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;
}
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