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https://github.com/RetroDECK/Duckstation.git
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138 lines
4 KiB
C++
138 lines
4 KiB
C++
// SPDX-FileCopyrightText: 2019-2023 Connor McLaughlin <stenzek@gmail.com> and contributors.
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// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
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#include "input_manager.h"
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#include "platform_misc.h"
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#include "common/log.h"
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#include "common/scoped_guard.h"
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#include "common/small_string.h"
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#include <cinttypes>
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#include <spawn.h>
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#include <unistd.h>
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#include <dbus/dbus.h>
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Log_SetChannel(PlatformMisc);
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static bool SetScreensaverInhibitDBus(const bool inhibit_requested, const char* program_name, const char* reason)
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{
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static dbus_uint32_t s_cookie;
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const char* bus_method = (inhibit_requested) ? "Inhibit" : "UnInhibit";
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DBusError error;
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DBusConnection* connection = nullptr;
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static DBusConnection* s_comparison_connection;
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DBusMessage* message = nullptr;
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DBusMessage* response = nullptr;
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DBusMessageIter message_itr;
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ScopedGuard cleanup = [&]() {
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if (dbus_error_is_set(&error))
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{
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Log_ErrorPrintf("SetScreensaverInhibitDBus error: %s", error.message);
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dbus_error_free(&error);
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}
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if (message)
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dbus_message_unref(message);
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if (response)
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dbus_message_unref(response);
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};
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dbus_error_init(&error);
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// Calling dbus_bus_get() after the first time returns a pointer to the existing connection.
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connection = dbus_bus_get(DBUS_BUS_SESSION, &error);
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if (!connection || (dbus_error_is_set(&error)))
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return false;
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if (s_comparison_connection != connection)
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{
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dbus_connection_set_exit_on_disconnect(connection, false);
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s_cookie = 0;
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s_comparison_connection = connection;
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}
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message = dbus_message_new_method_call("org.freedesktop.ScreenSaver", "/org/freedesktop/ScreenSaver",
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"org.freedesktop.ScreenSaver", bus_method);
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if (!message)
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return false;
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// Initialize an append iterator for the message, gets freed with the message.
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dbus_message_iter_init_append(message, &message_itr);
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if (inhibit_requested)
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{
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// Guard against repeat inhibitions which would add extra inhibitors each generating a different cookie.
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if (s_cookie)
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return false;
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// Append process/window name.
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if (!dbus_message_iter_append_basic(&message_itr, DBUS_TYPE_STRING, &program_name))
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return false;
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// Append reason for inhibiting the screensaver.
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if (!dbus_message_iter_append_basic(&message_itr, DBUS_TYPE_STRING, &reason))
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return false;
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}
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else
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{
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// Only Append the cookie.
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if (!dbus_message_iter_append_basic(&message_itr, DBUS_TYPE_UINT32, &s_cookie))
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return false;
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}
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// Send message and get response.
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response = dbus_connection_send_with_reply_and_block(connection, message, DBUS_TIMEOUT_USE_DEFAULT, &error);
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if (!response || dbus_error_is_set(&error))
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return false;
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s_cookie = 0;
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if (inhibit_requested)
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{
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// Get the cookie from the response message.
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if (!dbus_message_get_args(response, &error, DBUS_TYPE_UINT32, &s_cookie, DBUS_TYPE_INVALID) ||
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dbus_error_is_set(&error))
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return false;
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}
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return true;
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}
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static bool SetScreensaverInhibit(bool inhibit)
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{
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return SetScreensaverInhibitDBus(inhibit, "DuckStation", "DuckStation VM is running.");
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}
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static bool s_screensaver_suspended;
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void PlatformMisc::SuspendScreensaver()
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{
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if (s_screensaver_suspended)
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return;
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if (!SetScreensaverInhibit(true))
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{
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Log_ErrorPrintf("Failed to suspend screensaver.");
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return;
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}
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s_screensaver_suspended = true;
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}
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void PlatformMisc::ResumeScreensaver()
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{
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if (!s_screensaver_suspended)
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return;
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if (!SetScreensaverInhibit(false))
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Log_ErrorPrint("Failed to resume screensaver.");
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s_screensaver_suspended = false;
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}
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bool PlatformMisc::PlaySoundAsync(const char* path)
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{
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#ifdef __linux__
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// This is... pretty awful. But I can't think of a better way without linking to e.g. gstreamer.
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const char* cmdname = "aplay";
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const char* argv[] = {cmdname, path, nullptr};
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pid_t pid;
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// Since we set SA_NOCLDWAIT in Qt, we don't need to wait here.
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int res = posix_spawnp(&pid, cmdname, nullptr, nullptr, const_cast<char**>(argv), environ);
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return (res == 0);
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#else
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return false;
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#endif
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}
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