CDROM: Add option to speed up double speed reads

src/core/cdrom.cpp

@@ -620,6 +620,10 @@ TickCount CDROM::GetAckDelayForCommand(Command command)
 TickCount CDROM::GetTicksForRead()
 {
   const TickCount tps = System::GetTicksPerSecond();
+
+  if (g_settings.cdrom_read_speedup > 1 && !m_mode.cdda && !m_mode.xa_enable && m_mode.double_speed)
+    return tps / (150 * g_settings.cdrom_read_speedup);
+
   return m_mode.double_speed ? (tps / 150) : (tps / 75);
 }
 

src/core/host_interface.cpp

@@ -457,6 +457,7 @@ void HostInterface::SetDefaultSettings(SettingsInterface& si)
   si.SetBoolValue("CDROM", "RegionCheck", true);
   si.SetBoolValue("CDROM", "LoadImageToRAM", false);
   si.SetBoolValue("CDROM", "MuteCDAudio", false);
+  si.SetIntValue("CDROM", "ReadSpeedup", 1);
 
   si.SetStringValue("Audio", "Backend", Settings::GetAudioBackendName(Settings::DEFAULT_AUDIO_BACKEND));
   si.SetIntValue("Audio", "OutputVolume", 100);

src/core/settings.cpp

@@ -176,6 +176,7 @@ void Settings::Load(SettingsInterface& si)
   cdrom_region_check = si.GetBoolValue("CDROM", "RegionCheck", true);
   cdrom_load_image_to_ram = si.GetBoolValue("CDROM", "LoadImageToRAM", false);
   cdrom_mute_cd_audio = si.GetBoolValue("CDROM", "MuteCDAudio", false);
+  cdrom_read_speedup = si.GetIntValue("CDROM", "ReadSpeedup", 1);
 
   audio_backend =
     ParseAudioBackend(si.GetStringValue("Audio", "Backend", GetAudioBackendName(DEFAULT_AUDIO_BACKEND)).c_str())
@@ -296,6 +297,7 @@ void Settings::Save(SettingsInterface& si) const
   si.SetBoolValue("CDROM", "RegionCheck", cdrom_region_check);
   si.SetBoolValue("CDROM", "LoadImageToRAM", cdrom_load_image_to_ram);
   si.SetBoolValue("CDROM", "MuteCDAudio", cdrom_mute_cd_audio);
+  si.SetIntValue("CDROM", "ReadSpeedup", cdrom_read_speedup);
 
   si.SetStringValue("Audio", "Backend", GetAudioBackendName(audio_backend));
   si.SetIntValue("Audio", "OutputVolume", audio_output_volume);

src/core/settings.h

@@ -123,6 +123,7 @@ struct Settings
   bool cdrom_region_check = true;
   bool cdrom_load_image_to_ram = false;
   bool cdrom_mute_cd_audio = false;
+  u32 cdrom_read_speedup = 1;
 
   AudioBackend audio_backend = AudioBackend::Cubeb;
   s32 audio_output_volume = 100;

src/duckstation-libretro/libretro_host_interface.cpp

@@ -445,7 +445,7 @@ void LibretroHostInterface::OnSystemDestroyed()
   m_using_hardware_renderer = false;
 }
 
-static std::array<retro_core_option_definition, 35> s_option_definitions = {{
+static std::array<retro_core_option_definition, 36> s_option_definitions = {{
   {"duckstation_Console.Region",
    "Console Region",
    "Determines which region/hardware to emulate. Auto-Detect will use the region of the disc inserted.",
@@ -481,6 +481,21 @@ static std::array<retro_core_option_definition, 35> s_option_definitions = {{
    "Forcibly mutes both CD-DA and XA audio from the CD-ROM. Can be used to disable background music in some games.",
    {{"true", "Enabled"}, {"false", "Disabled"}},
    "false"},
+  {"duckstation_CDROM.ReadSpeedup",
+   "Mute CD Audio",
+   "Speeds up CD-ROM reads by the specified factor. Only applies to double-speed reads, and is ignored when audio "
+   "is playing. May improve loading speeds in some games, at the cost of breaking others.",
+   {{"1", "None (Double Speed)"},
+    {"2", "2x (Quad Speed)"},
+    {"3", "3x (6x Speed)"},
+    {"4", "4x (8x Speed)"},
+    {"5", "5x (10x Speed)"},
+    {"6", "6x (12x Speed)"},
+    {"7", "7x (14x Speed)"},
+    {"8", "8x (16x Speed)"},
+    {"9", "9x (18x Speed)"},
+    {"10", "10x (20x Speed)"}},
+   "1"},
   {"duckstation_CPU.ExecutionMode",
    "CPU Execution Mode",
    "Which mode to use for CPU emulation. Recompiler provides the best performance.",

src/duckstation-qt/consolesettingswidget.cpp

@@ -39,11 +39,19 @@ ConsoleSettingsWidget::ConsoleSettingsWidget(QtHostInterface* host_interface, QW
     m_ui.cdromLoadImageToRAM, tr("Preload Image to RAM"), tr("Unchecked"),
     tr("Loads the game image into RAM. Useful for network paths that may become unreliable during gameplay. In some "
        "cases also eliminates stutter when games initiate audio track playback."));
+  dialog->registerWidgetHelp(
+    m_ui.cdromReadSpeedup, tr("CDROM Read Speedup"), tr("None (Double Speed"),
+    tr("Speeds up CD-ROM reads by the specified factor. Only applies to double-speed reads, and is ignored when audio "
+       "is playing. May improve loading speeds in some games, at the cost of breaking others."));
 
   m_ui.cpuClockSpeed->setEnabled(m_ui.enableCPUClockSpeedControl->checkState() == Qt::Checked);
+  m_ui.cdromReadSpeedup->setCurrentIndex(m_host_interface->GetIntSettingValue("CDROM", "ReadSpeedup", 1) - 1);
+
   connect(m_ui.enableCPUClockSpeedControl, &QCheckBox::stateChanged, this,
           &ConsoleSettingsWidget::onEnableCPUClockSpeedControlChecked);
   connect(m_ui.cpuClockSpeed, &QSlider::valueChanged, this, &ConsoleSettingsWidget::onCPUClockSpeedValueChanged);
+  connect(m_ui.cdromReadSpeedup, QOverload<int>::of(&QComboBox::currentIndexChanged), this,
+          &ConsoleSettingsWidget::onCDROMReadSpeedupValueChanged);
 
   calculateCPUClockValue();
 }
@@ -95,6 +103,12 @@ void ConsoleSettingsWidget::updateCPUClockSpeedLabel()
   m_ui.cpuClockSpeedLabel->setText(tr("%1% (%2MHz)").arg(percent).arg(frequency / 1000000.0, 0, 'f', 2));
 }
 
+void ConsoleSettingsWidget::onCDROMReadSpeedupValueChanged(int value)
+{
+  m_host_interface->SetIntSettingValue("CDROM", "ReadSpeedup", value + 1);
+  m_host_interface->applySettings();
+}
+
 void ConsoleSettingsWidget::calculateCPUClockValue()
 {
   const u32 numerator = static_cast<u32>(m_host_interface->GetIntSettingValue("CPU", "OverclockNumerator", 1));

src/duckstation-qt/consolesettingswidget.h

@@ -19,6 +19,7 @@ private Q_SLOTS:
   void onEnableCPUClockSpeedControlChecked(int state);
   void onCPUClockSpeedValueChanged(int value);
   void updateCPUClockSpeedLabel();
+  void onCDROMReadSpeedupValueChanged(int value);
 
 private:
   void calculateCPUClockValue();

src/duckstation-qt/consolesettingswidget.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>541</width>
+    <width>648</width>
-    <height>351</height>
+    <height>401</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -132,30 +132,91 @@
    <item>
     <widget class="QGroupBox" name="groupBox_4">
      <property name="title">
-      <string>CDROM Emulation</string>
+      <string>CD-ROM Emulation</string>
      </property>
      <layout class="QFormLayout" name="formLayout_4">
-      <item row="0" column="0" colspan="2">
+      <item row="1" column="0" colspan="2">
        <widget class="QCheckBox" name="cdromReadThread">
         <property name="text">
          <string>Use Read Thread (Asynchronous)</string>
         </property>
        </widget>
       </item>
-      <item row="1" column="0" colspan="2">
+      <item row="2" column="0" colspan="2">
        <widget class="QCheckBox" name="cdromRegionCheck">
         <property name="text">
          <string>Enable Region Check</string>
         </property>
        </widget>
       </item>
-      <item row="2" column="0" colspan="2">
+      <item row="3" column="0" colspan="2">
        <widget class="QCheckBox" name="cdromLoadImageToRAM">
         <property name="text">
          <string>Preload Image To RAM</string>
         </property>
        </widget>
       </item>
+      <item row="0" column="0">
+       <widget class="QLabel" name="label_2">
+        <property name="text">
+         <string>Read Speedup:</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="1">
+       <widget class="QComboBox" name="cdromReadSpeedup">
+        <item>
+         <property name="text">
+          <string>None (Double Speed)</string>
+         </property>
+        </item>
+        <item>
+         <property name="text">
+          <string>2x (Quad Speed)</string>
+         </property>
+        </item>
+        <item>
+         <property name="text">
+          <string>3x (6x Speed)</string>
+         </property>
+        </item>
+        <item>
+         <property name="text">
+          <string>4x (8x Speed)</string>
+         </property>
+        </item>
+        <item>
+         <property name="text">
+          <string>5x (10x Speed)</string>
+         </property>
+        </item>
+        <item>
+         <property name="text">
+          <string>6x (12x Speed)</string>
+         </property>
+        </item>
+        <item>
+         <property name="text">
+          <string>7x (14x Speed)</string>
+         </property>
+        </item>
+        <item>
+         <property name="text">
+          <string>8x (16x Speed)</string>
+         </property>
+        </item>
+        <item>
+         <property name="text">
+          <string>9x (18x Speed)</string>
+         </property>
+        </item>
+        <item>
+         <property name="text">
+          <string>10x (20x Speed)</string>
+         </property>
+        </item>
+       </widget>
+      </item>
      </layout>
     </widget>
    </item>