RTC revamp (#1867)

* get this started

* implement DSi RTC commands

* set up RTC clock timer. lay down basic idea of a clock.

* make the date/time registers writable

* move RTC state to its own structure, to make it easier to deal with

* more RTC work
lay base for date/time dialog

* get the bulk of the RTC functionality going

* much simpler design for RTC stuff

* aha, that is what it is

* start working on the RTC IRQ

* implement all types of RTC IRQ

* start refining sleep mode. code still kinda sucks.

* implement keypad IRQ

* refine it some more

* shut the fuck uuuuuupppppppppppppp

10 files changed, 388 insertions, 9 deletions

diff --git a/src/frontend/qt_sdl/CMakeLists.txt b/src/frontend/qt_sdl/CMakeLists.txt
index 3923f37..cdc96dd 100644
--- a/src/frontend/qt_sdl/CMakeLists.txt
+++ b/src/frontend/qt_sdl/CMakeLists.txt
@@ -7,6 +7,7 @@ set(SOURCES_QT_SDL
     main_shaders.h
     CheatsDialog.cpp
     Config.cpp
+	DateTimeDialog.cpp
     EmuSettingsDialog.cpp
     PowerManagement/PowerManagementDialog.cpp
     PowerManagement/resources/battery.qrc
diff --git a/src/frontend/qt_sdl/Config.cpp b/src/frontend/qt_sdl/Config.cpp
index da08c28..c28f63a 100644
--- a/src/frontend/qt_sdl/Config.cpp
+++ b/src/frontend/qt_sdl/Config.cpp
@@ -19,6 +19,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <inttypes.h>
 #include "Platform.h"
 #include "Config.h"
 
@@ -140,6 +141,8 @@ int MouseHideSeconds;
 
 bool PauseLostFocus;
 
+int64_t RTCOffset;
+
 bool DSBatteryLevelOkay;
 int DSiBatteryLevel;
 bool DSiBatteryCharging;
@@ -339,6 +342,8 @@ ConfigEntry ConfigFile[] =
     {"MouseHideSeconds", 0, &MouseHideSeconds, 5, false},
     {"PauseLostFocus",   1, &PauseLostFocus,   false, false},
 
+    {"RTCOffset",       3, &RTCOffset,       (int64_t)0, true},
+
     {"DSBatteryLevelOkay",   1, &DSBatteryLevelOkay, true, true},
     {"DSiBatteryLevel",    0, &DSiBatteryLevel, 0xF, true},
     {"DSiBatteryCharging", 1, &DSiBatteryCharging, true, true},
@@ -406,6 +411,7 @@ void LoadFile(int inst)
                 case 0: *(int*)entry->Value = strtol(entryval, NULL, 10); break;
                 case 1: *(bool*)entry->Value = strtol(entryval, NULL, 10) ? true:false; break;
                 case 2: *(std::string*)entry->Value = entryval; break;
+                case 3: *(int64_t*)entry->Value = strtoll(entryval, NULL, 10); break;
                 }
 
                 break;
@@ -426,6 +432,7 @@ void Load()
         case 0: *(int*)entry->Value = std::get<int>(entry->Default); break;
         case 1: *(bool*)entry->Value = std::get<bool>(entry->Default); break;
         case 2: *(std::string*)entry->Value = std::get<std::string>(entry->Default); break;
+        case 3: *(int64_t*)entry->Value = std::get<int64_t>(entry->Default); break;
         }
     }
 
@@ -462,6 +469,7 @@ void Save()
         case 0: Platform::FileWriteFormatted(f, "%s=%d\r\n", entry->Name, *(int*)entry->Value); break;
         case 1: Platform::FileWriteFormatted(f, "%s=%d\r\n", entry->Name, *(bool*)entry->Value ? 1:0); break;
         case 2: Platform::FileWriteFormatted(f, "%s=%s\r\n", entry->Name, (*(std::string*)entry->Value).c_str()); break;
+        case 3: Platform::FileWriteFormatted(f, "%s=%" PRId64 "\r\n", entry->Name, *(int64_t*)entry->Value); break;
         }
     }
 
diff --git a/src/frontend/qt_sdl/Config.h b/src/frontend/qt_sdl/Config.h
index b1d9532..fba9bfb 100644
--- a/src/frontend/qt_sdl/Config.h
+++ b/src/frontend/qt_sdl/Config.h
@@ -57,9 +57,9 @@ namespace Config
 struct ConfigEntry
 {
     char Name[32];
-    int Type;           // 0=int 1=bool 2=string
+    int Type;           // 0=int 1=bool 2=string 3=64bit int
     void* Value;        // pointer to the value variable
-    std::variant<int, bool, std::string> Default;
+    std::variant<int, bool, std::string, int64_t> Default;
     bool InstanceUnique; // whether the setting can exist individually for each instance in multiplayer
 };
 
@@ -185,6 +185,8 @@ extern bool MouseHide;
 extern int MouseHideSeconds;
 extern bool PauseLostFocus;
 
+extern int64_t RTCOffset;
+
 extern bool DSBatteryLevelOkay;
 extern int DSiBatteryLevel;
 extern bool DSiBatteryCharging;
diff --git a/src/frontend/qt_sdl/DateTimeDialog.cpp b/src/frontend/qt_sdl/DateTimeDialog.cpp
new file mode 100644
index 0000000..2ef9688
--- /dev/null
+++ b/src/frontend/qt_sdl/DateTimeDialog.cpp
@@ -0,0 +1,91 @@
+/*
+    Copyright 2016-2022 melonDS team
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#include <stdio.h>
+
+#include "types.h"
+#include "Config.h"
+
+#include "DateTimeDialog.h"
+#include "ui_DateTimeDialog.h"
+
+DateTimeDialog* DateTimeDialog::currentDlg = nullptr;
+
+
+DateTimeDialog::DateTimeDialog(QWidget* parent) : QDialog(parent), ui(new Ui::DateTimeDialog)
+{
+    ui->setupUi(this);
+    setAttribute(Qt::WA_DeleteOnClose);
+
+    QDateTime now = QDateTime::currentDateTime();
+    customTime = now.addSecs(Config::RTCOffset);
+
+    ui->chkChangeTime->setChecked(false);
+    ui->chkResetTime->setChecked(false);
+
+    ui->lblCustomTime->setText(customTime.toString(ui->txtNewCustomTime->displayFormat()));
+    startTimer(1000);
+
+    ui->txtNewCustomTime->setEnabled(ui->chkChangeTime->isChecked());
+}
+
+DateTimeDialog::~DateTimeDialog()
+{
+    delete ui;
+}
+
+void DateTimeDialog::timerEvent(QTimerEvent* event)
+{
+    customTime = customTime.addSecs(1);
+    ui->lblCustomTime->setText(customTime.toString(ui->txtNewCustomTime->displayFormat()));
+}
+
+void DateTimeDialog::done(int r)
+{
+    if (r == QDialog::Accepted)
+    {
+        if (ui->chkChangeTime->isChecked())
+        {
+            QDateTime now = QDateTime::currentDateTime();
+            Config::RTCOffset = now.secsTo(ui->txtNewCustomTime->dateTime());
+        }
+        else if (ui->chkResetTime->isChecked())
+            Config::RTCOffset = 0;
+
+        Config::Save();
+    }
+
+    QDialog::done(r);
+
+    closeDlg();
+}
+
+void DateTimeDialog::on_chkChangeTime_clicked(bool checked)
+{
+    if (checked) ui->chkResetTime->setChecked(false);
+    ui->txtNewCustomTime->setEnabled(checked);
+}
+
+void DateTimeDialog::on_chkResetTime_clicked(bool checked)
+{
+    if (checked)
+    {
+        ui->chkChangeTime->setChecked(false);
+        ui->txtNewCustomTime->setEnabled(false);
+    }
+}
diff --git a/src/frontend/qt_sdl/DateTimeDialog.h b/src/frontend/qt_sdl/DateTimeDialog.h
new file mode 100644
index 0000000..f13dbd0
--- /dev/null
+++ b/src/frontend/qt_sdl/DateTimeDialog.h
@@ -0,0 +1,70 @@
+/*
+    Copyright 2016-2022 melonDS team
+
+    This file is part of melonDS.
+
+    melonDS is free software: you can redistribute it and/or modify it under
+    the terms of the GNU General Public License as published by the Free
+    Software Foundation, either version 3 of the License, or (at your option)
+    any later version.
+
+    melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
+    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+    FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#ifndef DATETIMEDIALOG_H
+#define DATETIMEDIALOG_H
+
+#include <QDialog>
+#include <QButtonGroup>
+#include <QDateTime>
+
+namespace Ui {class DateTimeDialog; }
+class DateTimeDialog;
+
+class DateTimeDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit DateTimeDialog(QWidget* parent);
+    ~DateTimeDialog();
+
+    static DateTimeDialog* currentDlg;
+    static DateTimeDialog* openDlg(QWidget* parent)
+    {
+        if (currentDlg)
+        {
+            currentDlg->activateWindow();
+            return currentDlg;
+        }
+
+        currentDlg = new DateTimeDialog(parent);
+        currentDlg->open();
+        return currentDlg;
+    }
+    static void closeDlg()
+    {
+        currentDlg = nullptr;
+    }
+
+protected:
+    void timerEvent(QTimerEvent* event) override;
+
+private slots:
+    void done(int r);
+
+    void on_chkChangeTime_clicked(bool checked);
+    void on_chkResetTime_clicked(bool checked);
+
+private:
+    Ui::DateTimeDialog* ui;
+
+    QDateTime customTime;
+};
+
+#endif // DATETIMEDIALOG_H
diff --git a/src/frontend/qt_sdl/DateTimeDialog.ui b/src/frontend/qt_sdl/DateTimeDialog.ui
new file mode 100644
index 0000000..59eb677
--- /dev/null
+++ b/src/frontend/qt_sdl/DateTimeDialog.ui
@@ -0,0 +1,148 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>DateTimeDialog</class>
+ <widget class="QDialog" name="DateTimeDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>357</width>
+    <height>161</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Date and time - melonDS</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QGroupBox" name="groupBox_2">
+     <property name="title">
+      <string>Date and time</string>
+     </property>
+     <layout class="QFormLayout" name="formLayout_2">
+      <item row="0" column="0">
+       <widget class="QLabel" name="label">
+        <property name="text">
+         <string>Current value:</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="1">
+       <widget class="QLabel" name="lblCustomTime">
+        <property name="text">
+         <string>[placeholder]</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="0">
+       <widget class="QLabel" name="label_2">
+        <property name="text">
+         <string/>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="0">
+       <widget class="QCheckBox" name="chkChangeTime">
+        <property name="text">
+         <string>Change to:</string>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="1">
+       <widget class="QDateTimeEdit" name="txtNewCustomTime">
+        <property name="dateTime">
+         <datetime>
+          <hour>0</hour>
+          <minute>0</minute>
+          <second>0</second>
+          <year>2000</year>
+          <month>1</month>
+          <day>1</day>
+         </datetime>
+        </property>
+        <property name="maximumDateTime">
+         <datetime>
+          <hour>23</hour>
+          <minute>59</minute>
+          <second>59</second>
+          <year>2099</year>
+          <month>12</month>
+          <day>31</day>
+         </datetime>
+        </property>
+        <property name="minimumDateTime">
+         <datetime>
+          <hour>0</hour>
+          <minute>0</minute>
+          <second>0</second>
+          <year>2000</year>
+          <month>1</month>
+          <day>1</day>
+         </datetime>
+        </property>
+        <property name="displayFormat">
+         <string>dd/MM/yyyy HH:mm:ss</string>
+        </property>
+        <property name="calendarPopup">
+         <bool>true</bool>
+        </property>
+       </widget>
+      </item>
+      <item row="3" column="0" colspan="2">
+       <widget class="QCheckBox" name="chkResetTime">
+        <property name="text">
+         <string>Reset to system date and time</string>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>DateTimeDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>DateTimeDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/src/frontend/qt_sdl/Platform.cpp b/src/frontend/qt_sdl/Platform.cpp
index 0cb9574..252594c 100644
--- a/src/frontend/qt_sdl/Platform.cpp
+++ b/src/frontend/qt_sdl/Platform.cpp
@@ -23,6 +23,7 @@
 #include <string>
 #include <QStandardPaths>
 #include <QString>
+#include <QDateTime>
 #include <QDir>
 #include <QThread>
 #include <QSemaphore>
@@ -610,6 +611,15 @@ void WriteFirmware(const SPI_Firmware::Firmware& firmware, u32 writeoffset, u32
 
 }
 
+void WriteDateTime(int year, int month, int day, int hour, int minute, int second)
+{
+    QDateTime hosttime = QDateTime::currentDateTime();
+    QDateTime time = QDateTime(QDate(year, month, day), QTime(hour, minute, second));
+
+    Config::RTCOffset = hosttime.secsTo(time);
+    Config::Save();
+}
+
 bool MP_Init()
 {
     return LocalMP::Init();
diff --git a/src/frontend/qt_sdl/ROMManager.cpp b/src/frontend/qt_sdl/ROMManager.cpp
index cc65dfd..648ab67 100644
--- a/src/frontend/qt_sdl/ROMManager.cpp
+++ b/src/frontend/qt_sdl/ROMManager.cpp
@@ -28,6 +28,8 @@
 #include <utility>
 #include <fstream>
 
+#include <QDateTime>
+
 #include <zstd.h>
 #ifdef ARCHIVE_SUPPORT_ENABLED
 #include "ArchiveUtil.h"
@@ -39,6 +41,7 @@
 #include "NDS.h"
 #include "DSi.h"
 #include "SPI.h"
+#include "RTC.h"
 #include "DSi_I2C.h"
 #include "FreeBIOS.h"
 
@@ -589,6 +592,15 @@ void SetBatteryLevels()
     }
 }
 
+void SetDateTime()
+{
+    QDateTime hosttime = QDateTime::currentDateTime();
+    QDateTime time = hosttime.addSecs(Config::RTCOffset);
+
+    RTC::SetDateTime(time.date().year(), time.date().month(), time.date().day(),
+                     time.time().hour(), time.time().minute(), time.time().second());
+}
+
 void Reset()
 {
     NDS::SetConsoleType(Config::ConsoleType);
@@ -602,6 +614,7 @@ void Reset()
     }
     NDS::Reset();
     SetBatteryLevels();
+    SetDateTime();
 
     if ((CartType != -1) && NDSSave)
     {
@@ -678,6 +691,7 @@ bool LoadBIOS()
 
     NDS::Reset();
     SetBatteryLevels();
+    SetDateTime();
     return true;
 }
 
@@ -1204,6 +1218,7 @@ bool LoadROM(QStringList filepath, bool reset)
 
         NDS::Reset();
         SetBatteryLevels();
+        SetDateTime();
     }
 
     u32 savelen = 0;
diff --git a/src/frontend/qt_sdl/main.cpp b/src/frontend/qt_sdl/main.cpp
index a6cc248..f670477 100644
--- a/src/frontend/qt_sdl/main.cpp
+++ b/src/frontend/qt_sdl/main.cpp
@@ -58,6 +58,7 @@
 #include "main.h"
 #include "Input.h"
 #include "CheatsDialog.h"
+#include "DateTimeDialog.h"
 #include "EmuSettingsDialog.h"
 #include "InputConfig/InputConfigDialog.h"
 #include "VideoSettingsDialog.h"
@@ -90,6 +91,7 @@
 #include "LocalMP.h"
 #include "Config.h"
 #include "DSi_I2C.h"
+#include "RTC.h"
 
 #include "Savestate.h"
 
@@ -313,6 +315,7 @@ void EmuThread::deinitOpenGL()
 void EmuThread::run()
 {
     u32 mainScreenPos[3];
+    Platform::FileHandle* file;
 
     NDS::Init();
 
@@ -352,6 +355,15 @@ void EmuThread::run()
     u32 winUpdateCount = 0, winUpdateFreq = 1;
     u8 dsiVolumeLevel = 0x1F;
 
+    file = Platform::OpenLocalFile("rtc.bin", Platform::FileMode::Read);
+    if (file)
+    {
+        RTC::StateData state;
+        Platform::FileRead(&state, sizeof(state), 1, file);
+        Platform::CloseFile(file);
+        RTC::SetState(state);
+    }
+
     char melontitle[100];
 
     while (EmuRunning != emuStatus_Exit)
@@ -650,6 +662,15 @@ void EmuThread::run()
         }
     }
 
+    file = Platform::OpenLocalFile("rtc.bin", Platform::FileMode::Write);
+    if (file)
+    {
+        RTC::StateData state;
+        RTC::GetState(state);
+        Platform::FileWrite(&state, sizeof(state), 1, file);
+        Platform::CloseFile(file);
+    }
+
     EmuStatus = emuStatus_Exit;
 
     GPU::DeInitRenderer();
@@ -1525,6 +1546,9 @@ MainWindow::MainWindow(QWidget* parent) : QMainWindow(parent)
         actPowerManagement = menu->addAction("Power management");
         connect(actPowerManagement, &QAction::triggered, this, &MainWindow::onOpenPowerManagement);
 
+        actDateTime = menu->addAction("Date and time");
+        connect(actDateTime, &QAction::triggered, this, &MainWindow::onOpenDateTime);
+
         menu->addSeparator();
 
         actEnableCheats = menu->addAction("Enable cheats");
@@ -1787,6 +1811,7 @@ MainWindow::MainWindow(QWidget* parent) : QMainWindow(parent)
     actStop->setEnabled(false);
     actFrameStep->setEnabled(false);
 
+    actDateTime->setEnabled(true);
     actPowerManagement->setEnabled(false);
 
     actSetupCheats->setEnabled(false);
@@ -2737,6 +2762,16 @@ void MainWindow::onFrameStep()
     emuThread->emuFrameStep();
 }
 
+void MainWindow::onOpenDateTime()
+{
+    DateTimeDialog* dlg = DateTimeDialog::openDlg(this);
+}
+
+void MainWindow::onOpenPowerManagement()
+{
+    PowerManagementDialog* dlg = PowerManagementDialog::openDlg(this);
+}
+
 void MainWindow::onEnableCheats(bool checked)
 {
     Config::EnableCheats = checked?1:0;
@@ -2824,11 +2859,6 @@ void MainWindow::onEmuSettingsDialogFinished(int res)
         actTitleManager->setEnabled(!Config::DSiNANDPath.empty());
 }
 
-void MainWindow::onOpenPowerManagement()
-{
-    PowerManagementDialog* dlg = PowerManagementDialog::openDlg(this);
-}
-
 void MainWindow::onOpenInputConfig()
 {
     emuThread->emuPause();
@@ -3148,6 +3178,7 @@ void MainWindow::onEmuStart()
     actStop->setEnabled(true);
     actFrameStep->setEnabled(true);
 
+    actDateTime->setEnabled(false);
     actPowerManagement->setEnabled(true);
 
     actTitleManager->setEnabled(false);
@@ -3169,6 +3200,7 @@ void MainWindow::onEmuStop()
     actStop->setEnabled(false);
     actFrameStep->setEnabled(false);
 
+    actDateTime->setEnabled(true);
     actPowerManagement->setEnabled(false);
 
     actTitleManager->setEnabled(!Config::DSiNANDPath.empty());
diff --git a/src/frontend/qt_sdl/main.h b/src/frontend/qt_sdl/main.h
index 073a4da..5832ed3 100644
--- a/src/frontend/qt_sdl/main.h
+++ b/src/frontend/qt_sdl/main.h
@@ -299,6 +299,8 @@ private slots:
     void onReset();
     void onStop();
     void onFrameStep();
+    void onOpenPowerManagement();
+    void onOpenDateTime();
     void onEnableCheats(bool checked);
     void onSetupCheats();
     void onCheatsDialogFinished(int res);
@@ -309,7 +311,6 @@ private slots:
 
     void onOpenEmuSettings();
     void onEmuSettingsDialogFinished(int res);
-    void onOpenPowerManagement();
     void onOpenInputConfig();
     void onInputConfigFinished(int res);
     void onOpenVideoSettings();
@@ -397,6 +398,8 @@ public:
     QAction* actReset;
     QAction* actStop;
     QAction* actFrameStep;
+    QAction* actPowerManagement;
+    QAction* actDateTime;
     QAction* actEnableCheats;
     QAction* actSetupCheats;
     QAction* actROMInfo;
@@ -408,7 +411,6 @@ public:
 #ifdef __APPLE__
     QAction* actPreferences;
 #endif
-    QAction* actPowerManagement;
     QAction* actInputConfig;
     QAction* actVideoSettings;
     QAction* actCameraSettings;