[qt_common] fix build on QuaZip <= 1.4 (#2744)

Signed-off-by: crueter <crueter@eden-emu.dev>
Reviewed-on: #2744

.reuse/dep5

@@ -13,12 +13,13 @@ Copyright: yuzu Emulator Project
 License: GPL-2.0-or-later
 
 Files: dist/qt_themes/default/icons/256x256/eden.png
+       dist/qt_themes/default/icons/256x256/eden_named.png
        dist/yuzu.bmp
-       dist/yuzu.icns
+       dist/eden.icns
        dist/eden.ico
-       dist/eden.svg
-Copyright: yuzu Emulator Project
-License: GPL-2.0-or-later
+       dist/dev.eden_emu.eden.svg
+Copyright: 2025 Eden Emulator Project
+License: GPL-3.0-or-later
 
 Files: dist/qt_themes/qdarkstyle*/LICENSE.*
        dist/qt_themes/qdarkstyle*/style.qrc
@@ -155,3 +156,39 @@ License: BSD-3-Clause
 Files: src/android/app/debug.keystore
 Copyright: 2023 yuzu Emulator Project
 License: GPL-3.0-or-later
+
+Files: dist/qt_themes/colorful/icons/48x48/user-trash.png
+       dist/qt_themes/colorful/icons/48x48/upload.png
+       dist/qt_themes/colorful/icons/48x48/download.png
+Copyright: 2014 Uri Herrera
+           1996-2025 KDE Software Foundation
+License: LGPL-2.0-or-later
+
+Files: dist/qt_themes/default/icons/48x48/user-trash.png
+       dist/qt_themes/default/icons/48x48/upload.png
+       dist/qt_themes/default/icons/48x48/download.png
+       dist/qt_themes/default_dark/icons/48x48/user-trash.png
+       dist/qt_themes/default_dark/icons/48x48/upload.png
+       dist/qt_themes/default_dark/icons/48x48/download.png
+Copyright: 2025 Fonticons, Inc.
+License: CC-BY-4.0
+Comment: All of these icons have been modified by crueter <crueter@crueter.xyz>
+
+Files: CMakeModules/CPM.cmake
+Copyright: 2019-2023 Lars Melchior
+License: MIT
+
+Files: CMakeModules/CPMUtil.cmake
+       CMakeModules/CPM.cmake
+       CMakeModules/GetSCMRev.cmake
+       CMakeModules/DetectArchitecture.cmake
+       tools/cpm/*
+       tools/update-cpm.sh
+       tools/shellcheck.sh
+       docs/CPMUtil.md
+       **cpmfile.json
+Copyright: 2025 crueter <crueter@crueter.xyz>
+License: GPL-3.0-or-later
+Comment: CPM.cmake has had additional modifications from crueter to better work with CPMUtil
+         https://git.crueter.xyz/CMake/CPMUtil
+         https://git.crueter.xyz/CMake/Modules

CMakeLists.txt

@@ -573,11 +573,12 @@ if (ARCHITECTURE_x86 OR ARCHITECTURE_x86_64)
     find_package(xbyak)
 endif()
 
-if (ENABLE_WEB_SERVICE)
-    find_package(httplib)
+if (ENABLE_WEB_SERVICE OR ENABLE_QT_UPDATE_CHECKER)
+    # Workaround: httplib will kill itself if you attempt to do a find_package propagation
+    # find_package(httplib CONFIG)
 endif()
 
-if (ENABLE_WEB_SERVICE OR ENABLE_QT_UPDATE_CHECKER)
+if (ENABLE_WEB_SERVICE)
     find_package(cpp-jwt)
 endif()
 

dist/qt_themes/colorful/style.qrc

@@ -18,6 +18,9 @@ SPDX-License-Identifier: GPL-2.0-or-later
         <file alias="48x48/bad_folder.png">icons/48x48/bad_folder.png</file>
         <file alias="48x48/chip.png">icons/48x48/chip.png</file>
         <file alias="48x48/folder.png">icons/48x48/folder.png</file>
+        <file alias="48x48/user-trash.png">icons/48x48/user-trash.png</file>
+        <file alias="48x48/download.png">icons/48x48/download.png</file>
+        <file alias="48x48/upload.png">icons/48x48/upload.png</file>
         <file alias="48x48/list-add.png">icons/48x48/list-add.png</file>
         <file alias="48x48/no_avatar.png">icons/48x48/no_avatar.png</file>
         <file alias="48x48/sd_card.png">icons/48x48/sd_card.png</file>

dist/qt_themes/colorful_midnight_blue/style.qrc

@@ -11,6 +11,9 @@ SPDX-License-Identifier: GPL-2.0-or-later
         <file alias="48x48/bad_folder.png">../colorful/icons/48x48/bad_folder.png</file>
         <file alias="48x48/chip.png">../colorful/icons/48x48/chip.png</file>
         <file alias="48x48/folder.png">../colorful/icons/48x48/folder.png</file>
+        <file alias="48x48/user-trash.png">../colorful/icons/48x48/user-trash.png</file>
+        <file alias="48x48/download.png">../colorful/icons/48x48/download.png</file>
+        <file alias="48x48/upload.png">../colorful/icons/48x48/upload.png</file>
         <file alias="48x48/list-add.png">../colorful/icons/48x48/list-add.png</file>
         <file alias="48x48/sd_card.png">../colorful/icons/48x48/sd_card.png</file>
         <file alias="256x256/plus_folder.png">../colorful/icons/256x256/plus_folder.png</file>

dist/qt_themes/default/default.qrc

@@ -14,6 +14,9 @@ SPDX-License-Identifier: GPL-2.0-or-later
         <file alias="48x48/bad_folder.png">icons/48x48/bad_folder.png</file>
         <file alias="48x48/chip.png">icons/48x48/chip.png</file>
         <file alias="48x48/folder.png">icons/48x48/folder.png</file>
+        <file alias="48x48/user-trash.png">icons/48x48/user-trash.png</file>
+        <file alias="48x48/download.png">icons/48x48/download.png</file>
+        <file alias="48x48/upload.png">icons/48x48/upload.png</file>
         <file alias="48x48/list-add.png">icons/48x48/list-add.png</file>
         <file alias="48x48/sd_card.png">icons/48x48/sd_card.png</file>
         <file alias="48x48/star.png">icons/48x48/star.png</file>

dist/qt_themes/default_dark/style.qrc

@@ -13,6 +13,9 @@ SPDX-License-Identifier: GPL-2.0-or-later
         <file alias="48x48/bad_folder.png">../colorful/icons/48x48/bad_folder.png</file>
         <file alias="48x48/chip.png">../colorful/icons/48x48/chip.png</file>
         <file alias="48x48/folder.png">../colorful/icons/48x48/folder.png</file>
+        <file alias="48x48/user-trash.png">../colorful/icons/48x48/user-trash.png</file>
+        <file alias="48x48/download.png">../colorful/icons/48x48/download.png</file>
+        <file alias="48x48/upload.png">../colorful/icons/48x48/upload.png</file>
         <file alias="48x48/no_avatar.png">../qdarkstyle/icons/48x48/no_avatar.png</file>
         <file alias="48x48/list-add.png">../colorful/icons/48x48/list-add.png</file>
         <file alias="48x48/sd_card.png">../colorful/icons/48x48/sd_card.png</file>

dist/qt_themes/qdarkstyle/style.qrc

@@ -9,6 +9,9 @@
     <file alias="48x48/bad_folder.png">icons/48x48/bad_folder.png</file>
     <file alias="48x48/chip.png">icons/48x48/chip.png</file>
     <file alias="48x48/folder.png">icons/48x48/folder.png</file>
+    <file alias="48x48/user-trash.png">icons/48x48/user-trash.png</file>
+    <file alias="48x48/download.png">icons/48x48/download.png</file>
+    <file alias="48x48/upload.png">icons/48x48/upload.png</file>
     <file alias="48x48/no_avatar.png">icons/48x48/no_avatar.png</file>
     <file alias="48x48/list-add.png">icons/48x48/list-add.png</file>
     <file alias="48x48/sd_card.png">icons/48x48/sd_card.png</file>

dist/qt_themes/qdarkstyle_midnight_blue/style.qrc

@@ -6,6 +6,9 @@
     <file alias="48x48/bad_folder.png">../qdarkstyle/icons/48x48/bad_folder.png</file>
     <file alias="48x48/chip.png">../qdarkstyle/icons/48x48/chip.png</file>
     <file alias="48x48/folder.png">../qdarkstyle/icons/48x48/folder.png</file>
+    <file alias="48x48/user-trash.png">../qdarkstyle/icons/48x48/user-trash.png</file>
+    <file alias="48x48/download.png">../qdarkstyle/icons/48x48/download.png</file>
+    <file alias="48x48/upload.png">../qdarkstyle/icons/48x48/upload.png</file>
     <file alias="48x48/no_avatar.png">../qdarkstyle/icons/48x48/no_avatar.png</file>
     <file alias="48x48/list-add.png">../qdarkstyle/icons/48x48/list-add.png</file>
     <file alias="48x48/sd_card.png">../qdarkstyle/icons/48x48/sd_card.png</file>

externals/cpmfile.json

@@ -29,7 +29,8 @@
         "repo": "yhirose/cpp-httplib",
         "tag": "v%VERSION%",
         "hash": "b364500f76e2ecb0fe21b032d831272e3f1dfeea71af74e325f8fc4ce9dcdb3c941b97a5b422bdeafb9facd058597b90f8bfc284fb9afe3c33fefa15dd5a010b",
-        "git_version": "0.26.0"
+        "git_version": "0.26.0",
+        "find_args": "MODULE GLOBAL"
     },
     "cpp-jwt": {
         "version": "1.4",

src/android/app/build.gradle.kts

@@ -58,8 +58,7 @@ android {
 
     defaultConfig {
         applicationId = "dev.eden.eden_emulator"
-
-        minSdk = 28
+        minSdk = 24
         targetSdk = 36
         versionName = getGitVersion()
 

src/android/app/src/main/java/org/yuzu/yuzu_emu/activities/EmulationActivity.kt

@@ -230,7 +230,9 @@ class EmulationActivity : AppCompatActivity(), SensorEventListener {
 
     override fun dispatchKeyEvent(event: KeyEvent): Boolean {
         if (event.source and InputDevice.SOURCE_JOYSTICK != InputDevice.SOURCE_JOYSTICK &&
-            event.source and InputDevice.SOURCE_GAMEPAD != InputDevice.SOURCE_GAMEPAD
+            event.source and InputDevice.SOURCE_GAMEPAD != InputDevice.SOURCE_GAMEPAD &&
+            event.source and InputDevice.SOURCE_KEYBOARD != InputDevice.SOURCE_KEYBOARD &&
+            event.source and InputDevice.SOURCE_MOUSE != InputDevice.SOURCE_MOUSE
         ) {
             return super.dispatchKeyEvent(event)
         }
@@ -244,7 +246,9 @@ class EmulationActivity : AppCompatActivity(), SensorEventListener {
 
     override fun dispatchGenericMotionEvent(event: MotionEvent): Boolean {
         if (event.source and InputDevice.SOURCE_JOYSTICK != InputDevice.SOURCE_JOYSTICK &&
-            event.source and InputDevice.SOURCE_GAMEPAD != InputDevice.SOURCE_GAMEPAD
+            event.source and InputDevice.SOURCE_GAMEPAD != InputDevice.SOURCE_GAMEPAD &&
+            event.source and InputDevice.SOURCE_KEYBOARD != InputDevice.SOURCE_KEYBOARD &&
+            event.source and InputDevice.SOURCE_MOUSE != InputDevice.SOURCE_MOUSE
         ) {
             return super.dispatchGenericMotionEvent(event)
         }

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/InputDialogFragment.kt

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -149,7 +152,9 @@ class InputDialogFragment : DialogFragment() {
 
     private fun onKeyEvent(event: KeyEvent): Boolean {
         if (event.source and InputDevice.SOURCE_JOYSTICK != InputDevice.SOURCE_JOYSTICK &&
-            event.source and InputDevice.SOURCE_GAMEPAD != InputDevice.SOURCE_GAMEPAD
+            event.source and InputDevice.SOURCE_GAMEPAD != InputDevice.SOURCE_GAMEPAD &&
+            event.source and InputDevice.SOURCE_KEYBOARD != InputDevice.SOURCE_KEYBOARD &&
+            event.source and InputDevice.SOURCE_MOUSE != InputDevice.SOURCE_MOUSE
         ) {
             return false
         }
@@ -173,7 +178,9 @@ class InputDialogFragment : DialogFragment() {
 
     private fun onMotionEvent(event: MotionEvent): Boolean {
         if (event.source and InputDevice.SOURCE_JOYSTICK != InputDevice.SOURCE_JOYSTICK &&
-            event.source and InputDevice.SOURCE_GAMEPAD != InputDevice.SOURCE_GAMEPAD
+            event.source and InputDevice.SOURCE_GAMEPAD != InputDevice.SOURCE_GAMEPAD &&
+            event.source and InputDevice.SOURCE_KEYBOARD != InputDevice.SOURCE_KEYBOARD &&
+            event.source and InputDevice.SOURCE_MOUSE != InputDevice.SOURCE_MOUSE
         ) {
             return false
         }

src/android/app/src/main/java/org/yuzu/yuzu_emu/overlay/InputOverlay.kt

@@ -1039,7 +1039,7 @@ class InputOverlay(context: Context, attrs: AttributeSet?) :
             scale /= 100f
 
             // Apply individual scale
-            scale *= overlayControlData.individualScale
+            scale *= overlayControlData.individualScale.let { if (it > 0f) it else 1f }
 
             // Initialize the InputOverlayDrawableButton.
             val defaultStateBitmap = getBitmap(context, defaultResId, scale)
@@ -1114,7 +1114,7 @@ class InputOverlay(context: Context, attrs: AttributeSet?) :
 
             // Apply individual scale
             if (dpadData != null) {
-                scale *= dpadData.individualScale
+                scale *= dpadData.individualScale.let { if (it > 0f) it else 1f }
             }
 
             // Initialize the InputOverlayDrawableDpad.
@@ -1191,7 +1191,7 @@ class InputOverlay(context: Context, attrs: AttributeSet?) :
             scale /= 100f
 
             // Apply individual scale
-            scale *= overlayControlData.individualScale
+            scale *= overlayControlData.individualScale.let { if (it > 0f) it else 1f }
 
             // Initialize the InputOverlayDrawableJoystick.
             val bitmapOuter = getBitmap(context, resOuter, scale)

src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/AddonUtil.kt

@@ -1,8 +1,11 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 package org.yuzu.yuzu_emu.utils
 
 object AddonUtil {
-    val validAddonDirectories = listOf("cheats", "exefs", "romfs")
+    val validAddonDirectories = listOf("cheats", "exefs", "romfs", "romfslite")
 }

src/audio_core/common/feature_support.h

@@ -16,7 +16,7 @@
 #include <ranges>
 
 namespace AudioCore {
-constexpr u32 CurrentRevision = 16;
+constexpr u32 CurrentRevision = 15;
 
 enum class SupportTags {
     CommandProcessingTimeEstimatorVersion4,
@@ -47,6 +47,10 @@ enum class SupportTags {
     DelayChannelMappingChange,
     ReverbChannelMappingChange,
     I3dl2ReverbChannelMappingChange,
+    SplitterPrevVolumeReset,
+    SplitterBiquadFilterParameter,
+    SplitterDestinationV2b,
+    VoiceInParameterV2,
 
     // Not a real tag, just here to get the count.
     Size
@@ -91,6 +95,10 @@ constexpr bool CheckFeatureSupported(SupportTags tag, u32 user_revision) {
             {SupportTags::DelayChannelMappingChange, 11},
             {SupportTags::ReverbChannelMappingChange, 11},
             {SupportTags::I3dl2ReverbChannelMappingChange, 11},
+            {SupportTags::SplitterBiquadFilterParameter, 12},
+            {SupportTags::SplitterPrevVolumeReset, 13},
+            {SupportTags::SplitterDestinationV2b, 15},
+            {SupportTags::VoiceInParameterV2, 15},
         }};
 
     const auto& feature =

src/audio_core/renderer/behavior/behavior_info.cpp

@@ -193,4 +193,20 @@ bool BehaviorInfo::IsI3dl2ReverbChannelMappingChanged() const {
     return CheckFeatureSupported(SupportTags::I3dl2ReverbChannelMappingChange, user_revision);
 }
 
+bool BehaviorInfo::IsSplitterPrevVolumeResetSupported() const {
+    return CheckFeatureSupported(SupportTags::SplitterPrevVolumeReset, user_revision);
+}
+
+bool BehaviorInfo::IsSplitterDestinationV2bSupported() const {
+    return CheckFeatureSupported(SupportTags::SplitterDestinationV2b, user_revision);
+}
+
+bool BehaviorInfo::IsVoiceInParameterV2Supported() const {
+    return CheckFeatureSupported(SupportTags::VoiceInParameterV2, user_revision);
+}
+
+bool BehaviorInfo::IsBiquadFilterParameterForSplitterEnabled() const {
+    return CheckFeatureSupported(SupportTags::SplitterBiquadFilterParameter, user_revision);
+}
+
 } // namespace AudioCore::Renderer

src/audio_core/renderer/behavior/behavior_info.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -361,6 +364,38 @@ public:
      */
     bool IsI3dl2ReverbChannelMappingChanged() const;
 
+    /**
+     * Check if explicit previous mix volume reset is supported for splitters.
+     * This allows splitters to explicitly reset their previous mix volumes instead of
+     * doing so implicitly on first use.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsSplitterPrevVolumeResetSupported() const;
+
+    /**
+     * Check if splitter destination v2b parameter format is supported (revision 15+).
+     * This uses the extended parameter format with biquad filter fields.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsSplitterDestinationV2bSupported() const;
+
+    /**
+     * Check if voice input parameter v2 format is supported (revision 15+).
+     * This uses the extended parameter format with float biquad filters.
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsVoiceInParameterV2Supported() const;
+
+    /**
+     * Check if splitter destinations can carry biquad filter parameters (revision 12+).
+     *
+     * @return True if supported, otherwise false.
+     */
+    bool IsBiquadFilterParameterForSplitterEnabled() const;
+
     /// Host version
     u32 process_revision;
     /// User version

src/audio_core/renderer/behavior/info_updater.cpp

@@ -64,8 +64,6 @@ Result InfoUpdater::UpdateVoices(VoiceContext& voice_context,
     const PoolMapper pool_mapper(process_handle, memory_pools, memory_pool_count,
                                  behaviour.IsMemoryForceMappingEnabled());
     const auto voice_count{voice_context.GetCount()};
-    std::span<const VoiceInfo::InParameter> in_params{
-        reinterpret_cast<const VoiceInfo::InParameter*>(input), voice_count};
     std::span<VoiceInfo::OutStatus> out_params{reinterpret_cast<VoiceInfo::OutStatus*>(output),
                                                voice_count};
 
@@ -76,8 +74,104 @@ Result InfoUpdater::UpdateVoices(VoiceContext& voice_context,
 
     u32 new_voice_count{0};
 
+    // Two input formats exist: legacy (0x170) and v2 with float biquad (0x188).
+    const bool use_v2 = behaviour.IsVoiceInParameterV2Supported();
+    const u32 in_stride = use_v2 ? 0x188u : static_cast<u32>(sizeof(VoiceInfo::InParameter));
+
     for (u32 i = 0; i < voice_count; i++) {
-        const auto& in_param{in_params[i]};
+        VoiceInfo::InParameter local_in{};
+        std::array<VoiceInfo::BiquadFilterParameter2, MaxBiquadFilters> float_biquads{};
+
+        if (!use_v2) {
+            const auto* in_param_ptr = reinterpret_cast<const VoiceInfo::InParameter*>(
+                input + i * sizeof(VoiceInfo::InParameter));
+            local_in = *in_param_ptr;
+        } else {
+            struct VoiceInParameterV2 {
+                u32 id;
+                u32 node_id;
+                bool is_new;
+                bool in_use;
+                PlayState play_state;
+                SampleFormat sample_format;
+                u32 sample_rate;
+                u32 priority;
+                u32 sort_order;
+                u32 channel_count;
+                f32 pitch;
+                f32 volume;
+                // Two BiquadFilterParameter2 (0x18 each) -> ignored/converted
+                struct BiquadV2 {
+                    bool enable;
+                    u8 r1;
+                    u8 r2;
+                    u8 r3;
+                    std::array<f32, 3> b;
+                    std::array<f32, 2> a;
+                } biquads[2];
+                u32 wave_buffer_count;
+                u32 wave_buffer_index;
+                u32 reserved1;
+                u64 src_data_address;
+                u64 src_data_size;
+                s32 mix_id;
+                u32 splitter_id;
+                std::array<VoiceInfo::WaveBufferInternal, MaxWaveBuffers> wavebuffers;
+                std::array<u32, MaxChannels> channel_resource_ids;
+                bool clear_voice_drop;
+                u8 flush_wave_buffer_count;
+                u16 reserved2;
+                VoiceInfo::Flags flags;
+                SrcQuality src_quality;
+                u32 external_ctx;
+                u32 external_ctx_size;
+                u32 reserved3[2];
+            };
+            const auto* vin = reinterpret_cast<const VoiceInParameterV2*>(input + i * in_stride);
+            local_in.id = vin->id;
+            local_in.node_id = vin->node_id;
+            local_in.is_new = vin->is_new;
+            local_in.in_use = vin->in_use;
+            local_in.play_state = vin->play_state;
+            local_in.sample_format = vin->sample_format;
+            local_in.sample_rate = vin->sample_rate;
+            local_in.priority = static_cast<s32>(vin->priority);
+            local_in.sort_order = static_cast<s32>(vin->sort_order);
+            local_in.channel_count = vin->channel_count;
+            local_in.pitch = vin->pitch;
+            local_in.volume = vin->volume;
+
+            // For REV15+, we keep float coefficients separate and only convert for compatibility
+            for (size_t filter_idx = 0; filter_idx < MaxBiquadFilters; filter_idx++) {
+                const auto& src = vin->biquads[filter_idx];
+                auto& dst = local_in.biquads[filter_idx];
+                dst.enabled = src.enable;
+                // Convert float coefficients to fixed-point Q2.14 for legacy path
+                dst.b[0] = static_cast<s16>(std::clamp(src.b[0] * 16384.0f, -32768.0f, 32767.0f));
+                dst.b[1] = static_cast<s16>(std::clamp(src.b[1] * 16384.0f, -32768.0f, 32767.0f));
+                dst.b[2] = static_cast<s16>(std::clamp(src.b[2] * 16384.0f, -32768.0f, 32767.0f));
+                dst.a[0] = static_cast<s16>(std::clamp(src.a[0] * 16384.0f, -32768.0f, 32767.0f));
+                dst.a[1] = static_cast<s16>(std::clamp(src.a[1] * 16384.0f, -32768.0f, 32767.0f));
+
+                // Also store the native float version
+                float_biquads[filter_idx].enabled = src.enable;
+                float_biquads[filter_idx].numerator = src.b;
+                float_biquads[filter_idx].denominator = src.a;
+            }
+            local_in.wave_buffer_count = vin->wave_buffer_count;
+            local_in.wave_buffer_index = static_cast<u16>(vin->wave_buffer_index);
+            local_in.src_data_address = static_cast<CpuAddr>(vin->src_data_address);
+            local_in.src_data_size = vin->src_data_size;
+            local_in.mix_id = static_cast<u32>(vin->mix_id);
+            local_in.splitter_id = vin->splitter_id;
+            local_in.wave_buffer_internal = vin->wavebuffers;
+            local_in.channel_resource_ids = vin->channel_resource_ids;
+            local_in.clear_voice_drop = vin->clear_voice_drop;
+            local_in.flush_buffer_count = vin->flush_wave_buffer_count;
+            local_in.flags = vin->flags;
+            local_in.src_quality = vin->src_quality;
+        }
+        const auto& in_param = local_in;
         std::array<VoiceState*, MaxChannels> voice_states{};
 
         if (!in_param.in_use) {
@@ -101,6 +195,14 @@ Result InfoUpdater::UpdateVoices(VoiceContext& voice_context,
         BehaviorInfo::ErrorInfo update_error{};
         voice_info.UpdateParameters(update_error, in_param, pool_mapper, behaviour);
 
+        // For REV15+, store the native float biquad coefficients
+        if (use_v2) {
+            voice_info.use_float_biquads = true;
+            voice_info.biquads_float = float_biquads;
+        } else {
+            voice_info.use_float_biquads = false;
+        }
+
         if (!update_error.error_code.IsSuccess()) {
             behaviour.AppendError(update_error);
         }
@@ -121,7 +223,7 @@ Result InfoUpdater::UpdateVoices(VoiceContext& voice_context,
         new_voice_count += in_param.channel_count;
     }
 
-    auto consumed_input_size{voice_count * static_cast<u32>(sizeof(VoiceInfo::InParameter))};
+    auto consumed_input_size{voice_count * in_stride};
     auto consumed_output_size{voice_count * static_cast<u32>(sizeof(VoiceInfo::OutStatus))};
     if (consumed_input_size != in_header->voices_size) {
         LOG_ERROR(Service_Audio, "Consumed an incorrect voices size, header size={}, consumed={}",
@@ -257,18 +359,31 @@ Result InfoUpdater::UpdateMixes(MixContext& mix_context, const u32 mix_buffer_co
                                 EffectContext& effect_context, SplitterContext& splitter_context) {
     s32 mix_count{0};
     u32 consumed_input_size{0};
+    u32 input_mix_size{0};
 
     if (behaviour.IsMixInParameterDirtyOnlyUpdateSupported()) {
         auto in_dirty_params{reinterpret_cast<const MixInfo::InDirtyParameter*>(input)};
         mix_count = in_dirty_params->count;
+
+        // Validate against expected header size to ensure structure is correct
+        if (mix_count < 0 || mix_count > 0x100) {
+            LOG_ERROR(
+                Service_Audio,
+                "Invalid mix count from dirty parameter: count={}, magic=0x{:X}, expected_size={}",
+                mix_count, in_dirty_params->magic, in_header->mix_size);
+            return Service::Audio::ResultInvalidUpdateInfo;
+        }
+
+        consumed_input_size += static_cast<u32>(sizeof(MixInfo::InDirtyParameter));
         input += sizeof(MixInfo::InDirtyParameter);
-        consumed_input_size = static_cast<u32>(sizeof(MixInfo::InDirtyParameter) +
-                                               mix_count * sizeof(MixInfo::InParameter));
     } else {
         mix_count = mix_context.GetCount();
-        consumed_input_size = static_cast<u32>(mix_count * sizeof(MixInfo::InParameter));
     }
 
+    input_mix_size = static_cast<u32>(mix_count * sizeof(MixInfo::InParameter));
+    consumed_input_size += input_mix_size;
+
+
     if (mix_buffer_count == 0) {
         return Service::Audio::ResultInvalidUpdateInfo;
     }

src/audio_core/renderer/command/command_buffer.cpp

@@ -237,6 +237,13 @@ void CommandBuffer::GenerateBiquadFilterCommand(const s32 node_id, VoiceInfo& vo
 
     cmd.biquad = voice_info.biquads[biquad_index];
 
+    if (voice_info.use_float_biquads) {
+        cmd.biquad_float = voice_info.biquads_float[biquad_index];
+        cmd.use_float_coefficients = true;
+    } else {
+        cmd.use_float_coefficients = false;
+    }
+
     cmd.state = memory_pool->Translate(CpuAddr(voice_state.biquad_states[biquad_index].data()),
                                        MaxBiquadFilters * sizeof(VoiceState::BiquadFilterState));
 
@@ -263,6 +270,9 @@ void CommandBuffer::GenerateBiquadFilterCommand(const s32 node_id, EffectInfoBas
     cmd.biquad.b = parameter.b;
     cmd.biquad.a = parameter.a;
 
+    // Effects use legacy fixed-point format
+    cmd.use_float_coefficients = false;
+
     cmd.state = memory_pool->Translate(CpuAddr(state),
                                        MaxBiquadFilters * sizeof(VoiceState::BiquadFilterState));
 
@@ -658,6 +668,13 @@ void CommandBuffer::GenerateMultitapBiquadFilterCommand(const s32 node_id, Voice
     cmd.output = buffer_count + channel;
     cmd.biquads = voice_info.biquads;
 
+    if (voice_info.use_float_biquads) {
+        cmd.biquads_float = voice_info.biquads_float;
+        cmd.use_float_coefficients = true;
+    } else {
+        cmd.use_float_coefficients = false;
+    }
+
     cmd.states[0] =
         memory_pool->Translate(CpuAddr(voice_state.biquad_states[0].data()),
                                MaxBiquadFilters * sizeof(VoiceState::BiquadFilterState));

src/audio_core/renderer/command/effect/biquad_filter.cpp

@@ -51,6 +51,40 @@ void ApplyBiquadFilterFloat(std::span<s32> output, std::span<const s32> input,
     state.s3 = Common::BitCast<s64>(s[3]);
 }
 
+/**
+ * Biquad filter float implementation with native float coefficients.
+ */
+void ApplyBiquadFilterFloat2(std::span<s32> output, std::span<const s32> input,
+                             std::array<f32, 3>& b, std::array<f32, 2>& a,
+                             VoiceState::BiquadFilterState& state, const u32 sample_count) {
+    constexpr f64 min{std::numeric_limits<s32>::min()};
+    constexpr f64 max{std::numeric_limits<s32>::max()};
+
+    std::array<f64, 3> b_double{static_cast<f64>(b[0]), static_cast<f64>(b[1]),
+                                static_cast<f64>(b[2])};
+    std::array<f64, 2> a_double{static_cast<f64>(a[0]), static_cast<f64>(a[1])};
+    std::array<f64, 4> s{Common::BitCast<f64>(state.s0), Common::BitCast<f64>(state.s1),
+                         Common::BitCast<f64>(state.s2), Common::BitCast<f64>(state.s3)};
+
+    for (u32 i = 0; i < sample_count; i++) {
+        f64 in_sample{static_cast<f64>(input[i])};
+        auto sample{in_sample * b_double[0] + s[0] * b_double[1] + s[1] * b_double[2] +
+                    s[2] * a_double[0] + s[3] * a_double[1]};
+
+        output[i] = static_cast<s32>(std::clamp(sample, min, max));
+
+        s[1] = s[0];
+        s[0] = in_sample;
+        s[3] = s[2];
+        s[2] = sample;
+    }
+
+    state.s0 = Common::BitCast<s64>(s[0]);
+    state.s1 = Common::BitCast<s64>(s[1]);
+    state.s2 = Common::BitCast<s64>(s[2]);
+    state.s3 = Common::BitCast<s64>(s[3]);
+}
+
 /**
  * Biquad filter s32 implementation.
  *
@@ -98,8 +132,14 @@ void BiquadFilterCommand::Process(const AudioRenderer::CommandListProcessor& pro
         processor.mix_buffers.subspan(output * processor.sample_count, processor.sample_count)};
 
     if (use_float_processing) {
-        ApplyBiquadFilterFloat(output_buffer, input_buffer, biquad.b, biquad.a, *state_,
-                               processor.sample_count);
+        // REV15+: Use native float coefficients if available
+        if (use_float_coefficients) {
+            ApplyBiquadFilterFloat2(output_buffer, input_buffer, biquad_float.numerator,
+                                    biquad_float.denominator, *state_, processor.sample_count);
+        } else {
+            ApplyBiquadFilterFloat(output_buffer, input_buffer, biquad.b, biquad.a, *state_,
+                                   processor.sample_count);
+        }
     } else {
         ApplyBiquadFilterInt(output_buffer, input_buffer, biquad.b, biquad.a, *state_,
                              processor.sample_count);

src/audio_core/renderer/command/effect/biquad_filter.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -50,12 +53,16 @@ struct BiquadFilterCommand : ICommand {
     s16 output;
     /// Input parameters for biquad
     VoiceInfo::BiquadFilterParameter biquad;
+    /// Input parameters for biquad (REV15+ native float)
+    VoiceInfo::BiquadFilterParameter2 biquad_float;
     /// Biquad state, updated each call
     CpuAddr state;
     /// If true, reset the state
     bool needs_init;
     /// If true, use float processing rather than int
     bool use_float_processing;
+    /// If true, use native float coefficients (REV15+)
+    bool use_float_coefficients;
 };
 
 /**
@@ -72,4 +79,18 @@ void ApplyBiquadFilterFloat(std::span<s32> output, std::span<const s32> input,
                             std::array<s16, 3>& b, std::array<s16, 2>& a,
                             VoiceState::BiquadFilterState& state, const u32 sample_count);
 
+/**
+ * Biquad filter float implementation with native float coefficients (SDK REV15+).
+ *
+ * @param output       - Output container for filtered samples.
+ * @param input        - Input container for samples to be filtered.
+ * @param b            - Feedforward coefficients (float).
+ * @param a            - Feedback coefficients (float).
+ * @param state        - State to track previous samples.
+ * @param sample_count - Number of samples to process.
+ */
+void ApplyBiquadFilterFloat2(std::span<s32> output, std::span<const s32> input,
+                             std::array<f32, 3>& b, std::array<f32, 2>& a,
+                             VoiceState::BiquadFilterState& state, const u32 sample_count);
+
 } // namespace AudioCore::Renderer

src/audio_core/renderer/command/effect/multi_tap_biquad_filter.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -33,8 +36,14 @@ void MultiTapBiquadFilterCommand::Process(const AudioRenderer::CommandListProces
             *state = {};
         }
 
-        ApplyBiquadFilterFloat(output_buffer, input_buffer, biquads[i].b, biquads[i].a, *state,
-                               processor.sample_count);
+        // REV15+: Use native float coefficients if available
+        if (use_float_coefficients) {
+            ApplyBiquadFilterFloat2(output_buffer, input_buffer, biquads_float[i].numerator,
+                                    biquads_float[i].denominator, *state, processor.sample_count);
+        } else {
+            ApplyBiquadFilterFloat(output_buffer, input_buffer, biquads[i].b, biquads[i].a, *state,
+                                   processor.sample_count);
+        }
     }
 }
 

src/audio_core/renderer/command/effect/multi_tap_biquad_filter.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -49,12 +52,16 @@ struct MultiTapBiquadFilterCommand : ICommand {
     s16 output;
     /// Biquad parameters
     std::array<VoiceInfo::BiquadFilterParameter, MaxBiquadFilters> biquads;
+    /// Biquad parameters (REV15+ native float)
+    std::array<VoiceInfo::BiquadFilterParameter2, MaxBiquadFilters> biquads_float;
     /// Biquad states, updated each call
     std::array<CpuAddr, MaxBiquadFilters> states;
     /// If each biquad needs initialisation
     std::array<bool, MaxBiquadFilters> needs_init;
     /// Number of active biquads
     u8 filter_tap_count;
+    /// If true, use native float coefficients (REV15+)
+    bool use_float_coefficients;
 };
 
 } // namespace AudioCore::Renderer

src/audio_core/renderer/splitter/splitter_context.cpp

@@ -35,12 +35,16 @@ SplitterDestinationData& SplitterContext::GetData(const u32 index) {
 
 void SplitterContext::Setup(std::span<SplitterInfo> splitter_infos_, const u32 splitter_info_count_,
                             SplitterDestinationData* splitter_destinations_,
-                            const u32 destination_count_, const bool splitter_bug_fixed_) {
+                            const u32 destination_count_, const bool splitter_bug_fixed_,
+                            const BehaviorInfo& behavior) {
     splitter_infos = splitter_infos_;
     info_count = splitter_info_count_;
     splitter_destinations = splitter_destinations_;
     destinations_count = destination_count_;
     splitter_bug_fixed = splitter_bug_fixed_;
+    splitter_prev_volume_reset_supported = behavior.IsSplitterPrevVolumeResetSupported();
+    splitter_biquad_param_supported = behavior.IsBiquadFilterParameterForSplitterEnabled();
+    splitter_float_coeff_supported = behavior.IsSplitterDestinationV2bSupported();
 }
 
 bool SplitterContext::UsingSplitter() const {
@@ -84,7 +88,7 @@ bool SplitterContext::Initialize(const BehaviorInfo& behavior,
         }
 
         Setup(splitter_infos, params.splitter_infos, splitter_destinations,
-              params.splitter_destinations, behavior.IsSplitterBugFixed());
+              params.splitter_destinations, behavior.IsSplitterBugFixed(), behavior);
     }
     return true;
 }
@@ -137,19 +141,104 @@ u32 SplitterContext::UpdateInfo(const u8* input, u32 offset, const u32 splitter_
 
 u32 SplitterContext::UpdateData(const u8* input, u32 offset, const u32 count) {
     for (u32 i = 0; i < count; i++) {
-        auto data_header{
-            reinterpret_cast<const SplitterDestinationData::InParameter*>(input + offset)};
+        // Version selection based on feature flags:
+        // - REV12: integer biquad params (Version2a)
+        // - REV15: float coeff/biquad v2b
+        // - older: no biquad fields
+        if (!splitter_biquad_param_supported) {
+            const auto* data_header =
+                reinterpret_cast<const SplitterDestinationData::InParameter*>(input + offset);
 
-        if (data_header->magic != GetSplitterSendDataMagic()) {
-            continue;
+            if (data_header->magic != GetSplitterSendDataMagic()) {
+                continue;
+            }
+            if (data_header->id < 0 || data_header->id > destinations_count) {
+                continue;
+            }
+
+            auto modified_params = *data_header;
+            if (!splitter_prev_volume_reset_supported) {
+                modified_params.reset_prev_volume = false;
+            }
+            splitter_destinations[data_header->id].Update(modified_params);
+            offset += sizeof(SplitterDestinationData::InParameter);
+        } else if (!splitter_float_coeff_supported) {
+            // Version 2a: struct contains legacy fixed-point biquad filter fields (REV12+)
+            const auto* data_header_v2a =
+                reinterpret_cast<const SplitterDestinationData::InParameterVersion2a*>(input +
+                                                                                       offset);
+
+            if (data_header_v2a->magic != GetSplitterSendDataMagic()) {
+                continue;
+            }
+            if (data_header_v2a->id < 0 || data_header_v2a->id > destinations_count) {
+                continue;
+            }
+
+            // Map common fields to the base format
+            SplitterDestinationData::InParameter mapped{};
+            mapped.magic = data_header_v2a->magic;
+            mapped.id = data_header_v2a->id;
+            mapped.mix_volumes = data_header_v2a->mix_volumes;
+            mapped.mix_id = data_header_v2a->mix_id;
+            mapped.in_use = data_header_v2a->in_use;
+            mapped.reset_prev_volume =
+                splitter_prev_volume_reset_supported ? data_header_v2a->reset_prev_volume : false;
+
+            auto& destination = splitter_destinations[data_header_v2a->id];
+            destination.Update(mapped);
+
+            // Convert legacy fixed-point biquad params into float representation
+            auto biquad_filters = destination.GetBiquadFilters();
+            for (size_t filter_idx = 0; filter_idx < MaxBiquadFilters; filter_idx++) {
+                const auto& legacy = data_header_v2a->biquad_filters[filter_idx];
+                auto& out = biquad_filters[filter_idx];
+                out.enabled = legacy.enabled;
+                // s16 fixed-point scale: use Q14 like voices (b and a are s16, 1.0 ~= 1<<14)
+                constexpr float scale = 1.0f / static_cast<float>(1 << 14);
+                out.numerator[0] = static_cast<float>(legacy.b[0]) * scale;
+                out.numerator[1] = static_cast<float>(legacy.b[1]) * scale;
+                out.numerator[2] = static_cast<float>(legacy.b[2]) * scale;
+                out.denominator[0] = static_cast<float>(legacy.a[0]) * scale;
+                out.denominator[1] = static_cast<float>(legacy.a[1]) * scale;
+            }
+
+            offset += static_cast<u32>(sizeof(SplitterDestinationData::InParameterVersion2a));
+        } else {
+            // Version 2b: struct contains extra biquad filter fields with float coeffs
+            const auto* data_header_v2b =
+                reinterpret_cast<const SplitterDestinationData::InParameterVersion2b*>(input +
+                                                                                       offset);
+
+            if (data_header_v2b->magic != GetSplitterSendDataMagic()) {
+                continue;
+            }
+            if (data_header_v2b->id < 0 || data_header_v2b->id > destinations_count) {
+                continue;
+            }
+
+            // Map common fields to the old format
+            SplitterDestinationData::InParameter mapped{};
+            mapped.magic = data_header_v2b->magic;
+            mapped.id = data_header_v2b->id;
+            mapped.mix_volumes = data_header_v2b->mix_volumes;
+            mapped.mix_id = data_header_v2b->mix_id;
+            mapped.in_use = data_header_v2b->in_use;
+            mapped.reset_prev_volume =
+                splitter_prev_volume_reset_supported ? data_header_v2b->reset_prev_volume : false;
+
+            // Store biquad filters from V2b (REV15+)
+            auto& destination = splitter_destinations[data_header_v2b->id];
+            destination.Update(mapped);
+
+            // Copy biquad filter parameters
+            auto biquad_filters = destination.GetBiquadFilters();
+            for (size_t filter_idx = 0; filter_idx < MaxBiquadFilters; filter_idx++) {
+                biquad_filters[filter_idx] = data_header_v2b->biquad_filters[filter_idx];
+            }
+
+            offset += static_cast<u32>(sizeof(SplitterDestinationData::InParameterVersion2b));
         }
-
-        if (data_header->id < 0 || data_header->id > destinations_count) {
-            continue;
-        }
-
-        splitter_destinations[data_header->id].Update(*data_header);
-        offset += sizeof(SplitterDestinationData::InParameter);
     }
 
     return offset;

src/audio_core/renderer/splitter/splitter_context.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -168,10 +171,11 @@ private:
      * @param splitter_destinations - Workbuffer for splitter destinations.
      * @param destination_count     - Number of destinations in the workbuffer.
      * @param splitter_bug_fixed    - Is the splitter bug fixed?
+     * @param behavior               - Behavior info for feature support.
      */
     void Setup(std::span<SplitterInfo> splitter_infos, u32 splitter_info_count,
                SplitterDestinationData* splitter_destinations, u32 destination_count,
-               bool splitter_bug_fixed);
+               bool splitter_bug_fixed, const BehaviorInfo& behavior);
 
     /// Workbuffer for splitters
     std::span<SplitterInfo> splitter_infos{};
@@ -183,6 +187,12 @@ private:
     s32 destinations_count{};
     /// Is the splitter bug fixed?
     bool splitter_bug_fixed{};
+    /// Is explicit previous mix volume reset supported?
+    bool splitter_prev_volume_reset_supported{};
+    /// Is biquad filter parameter for splitter (REV12) supported?
+    bool splitter_biquad_param_supported{};
+    /// Is float coefficient/biquad filter v2b parameter supported?
+    bool splitter_float_coeff_supported{};
 };
 
 } // namespace Renderer

src/audio_core/renderer/splitter/splitter_destinations_data.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -84,4 +87,14 @@ void SplitterDestinationData::SetNext(SplitterDestinationData* next_) {
     next = next_;
 }
 
+std::span<SplitterDestinationData::BiquadFilterParameter2>
+SplitterDestinationData::GetBiquadFilters() {
+    return biquad_filters;
+}
+
+std::span<const SplitterDestinationData::BiquadFilterParameter2>
+SplitterDestinationData::GetBiquadFilters() const {
+    return biquad_filters;
+}
+
 } // namespace AudioCore::Renderer

src/audio_core/renderer/splitter/splitter_destinations_data.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -16,16 +19,72 @@ namespace AudioCore::Renderer {
  */
 class SplitterDestinationData {
 public:
+    /**
+     * Biquad filter parameter with float coefficients (SDK REV15+).
+     * Defined here to avoid circular dependency with VoiceInfo.
+     */
+    struct BiquadFilterParameter2 {
+        /* 0x00 */ bool enabled;
+        /* 0x01 */ u8 reserved1;
+        /* 0x02 */ u8 reserved2;
+        /* 0x03 */ u8 reserved3;
+        /* 0x04 */ std::array<f32, 3> numerator;   // b0, b1, b2
+        /* 0x10 */ std::array<f32, 2> denominator; // a1, a2 (a0 = 1)
+    };
+    static_assert(sizeof(BiquadFilterParameter2) == 0x18,
+                  "BiquadFilterParameter2 has the wrong size!");
+
+    /**
+     * Legacy biquad filter parameter with fixed-point coefficients (SDK REV12+ for splitters).
+     * Matches the old voice biquad format.
+     */
+    struct BiquadFilterParameterLegacy {
+        /* 0x00 */ bool enabled;
+        /* 0x02 */ std::array<s16, 3> b; // numerator
+        /* 0x08 */ std::array<s16, 2> a; // denominator (a0 = 1)
+    };
+    static_assert(sizeof(BiquadFilterParameterLegacy) == 0xC,
+                  "BiquadFilterParameterLegacy has the wrong size!");
+
     struct InParameter {
         /* 0x00 */ u32 magic; // 'SNDD'
         /* 0x04 */ s32 id;
         /* 0x08 */ std::array<f32, MaxMixBuffers> mix_volumes;
         /* 0x68 */ u32 mix_id;
         /* 0x6C */ bool in_use;
+        /* 0x6D */ bool reset_prev_volume;
     };
     static_assert(sizeof(InParameter) == 0x70,
                   "SplitterDestinationData::InParameter has the wrong size!");
 
+    struct InParameterVersion2a {
+        /* 0x00 */ u32 magic; // 'SNDD'
+        /* 0x04 */ s32 id;
+        /* 0x08 */ std::array<f32, MaxMixBuffers> mix_volumes;
+        /* 0x68 */ u32 mix_id;
+        /* 0x6C */ std::array<SplitterDestinationData::BiquadFilterParameterLegacy, MaxBiquadFilters>
+            biquad_filters;
+        /* 0x84 */ bool in_use;
+        /* 0x85 */ bool reset_prev_volume; // only effective if supported
+        /* 0x86 */ u8 reserved[10];
+    };
+    static_assert(sizeof(InParameterVersion2a) == 0x90,
+                  "SplitterDestinationData::InParameterVersion2a has the wrong size!");
+
+    struct InParameterVersion2b {
+        /* 0x00 */ u32 magic; // 'SNDD'
+        /* 0x04 */ s32 id;
+        /* 0x08 */ std::array<f32, MaxMixBuffers> mix_volumes;
+        /* 0x68 */ u32 mix_id;
+        /* 0x6C */ std::array<SplitterDestinationData::BiquadFilterParameter2, MaxBiquadFilters>
+            biquad_filters;
+        /* 0x9C */ bool in_use;
+        /* 0x9D */ bool reset_prev_volume;
+        /* 0x9E */ u8 reserved[10];
+    };
+    static_assert(sizeof(InParameterVersion2b) == 0xA8,
+                  "SplitterDestinationData::InParameterVersion2b has the wrong size!");
+
     SplitterDestinationData(s32 id);
 
     /**
@@ -78,7 +137,7 @@ public:
     f32 GetMixVolumePrev(u32 index) const;
 
     /**
-     * Get the previous mix volumes for all mix buffers in this destination.
+     * Get the previous mix volumes for all mix buffers.
      *
      * @return Span of previous mix buffer volumes.
      */
@@ -115,6 +174,20 @@ public:
      */
     void SetNext(SplitterDestinationData* next);
 
+    /**
+     * Get biquad filter parameters for this destination (REV15+ or mapped from REV12).
+     *
+     * @return Span of biquad filter parameters.
+     */
+    std::span<BiquadFilterParameter2> GetBiquadFilters();
+
+    /**
+     * Get const biquad filter parameters for this destination (REV15+ or mapped from REV12).
+     *
+     * @return Const span of biquad filter parameters.
+     */
+    std::span<const BiquadFilterParameter2> GetBiquadFilters() const;
+
 private:
     /// Id of this destination
     const s32 id;
@@ -124,6 +197,8 @@ private:
     std::array<f32, MaxMixBuffers> mix_volumes{0.0f};
     /// Previous mix volumes
     std::array<f32, MaxMixBuffers> prev_mix_volumes{0.0f};
+    /// Biquad filter parameters (REV15+ or mapped from REV12)
+    std::array<BiquadFilterParameter2, MaxBiquadFilters> biquad_filters{};
     /// Next destination in the mix chain
     SplitterDestinationData* next{};
     /// Is this destination in use?

src/audio_core/renderer/voice/voice_info.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -135,6 +138,17 @@ public:
     static_assert(sizeof(BiquadFilterParameter) == 0xC,
                   "VoiceInfo::BiquadFilterParameter has the wrong size!");
 
+    struct BiquadFilterParameter2 {
+        /* 0x00 */ bool enabled;
+        /* 0x01 */ u8 reserved1;
+        /* 0x02 */ u8 reserved2;
+        /* 0x03 */ u8 reserved3;
+        /* 0x04 */ std::array<f32, 3> numerator;   // b0, b1, b2
+        /* 0x10 */ std::array<f32, 2> denominator; // a1, a2 (a0 = 1)
+    };
+    static_assert(sizeof(BiquadFilterParameter2) == 0x18,
+                  "VoiceInfo::BiquadFilterParameter2 has the wrong size!");
+
     struct InParameter {
         /* 0x000 */ u32 id;
         /* 0x004 */ u32 node_id;
@@ -168,6 +182,43 @@ public:
     };
     static_assert(sizeof(InParameter) == 0x170, "VoiceInfo::InParameter has the wrong size!");
 
+    struct InParameter2 {
+        /* 0x000 */ u32 id;
+        /* 0x004 */ u32 node_id;
+        /* 0x008 */ bool is_new;
+        /* 0x009 */ bool in_use;
+        /* 0x00A */ PlayState play_state;
+        /* 0x00B */ SampleFormat sample_format;
+        /* 0x00C */ u32 sample_rate;
+        /* 0x010 */ s32 priority;
+        /* 0x014 */ s32 sort_order;
+        /* 0x018 */ u32 channel_count;
+        /* 0x01C */ f32 pitch;
+        /* 0x020 */ f32 volume;
+        /* 0x024 */ std::array<BiquadFilterParameter2, MaxBiquadFilters> biquads;
+        /* 0x054 */ u32 wave_buffer_count;
+        /* 0x058 */ u32 wave_buffer_index;
+        /* 0x05C */ u32 reserved1;
+        /* 0x060 */ CpuAddr src_data_address;
+        /* 0x068 */ u64 src_data_size;
+        /* 0x070 */ u32 mix_id;
+        /* 0x074 */ u32 splitter_id;
+        /* 0x078 */ std::array<WaveBufferInternal, MaxWaveBuffers> wave_buffer_internal;
+        /* 0x158 */ std::array<s32, MaxChannels> channel_resource_ids;
+        /* 0x170 */ bool clear_voice_drop;
+        /* 0x171 */ u8 flush_buffer_count;
+        /* 0x172 */ u16 reserved2;
+        /* 0x174 */ Flags flags;
+        /* 0x175 */ u8 reserved3;
+        /* 0x176 */ SrcQuality src_quality;
+        /* 0x177 */ u8 reserved4;
+        /* 0x178 */ u32 external_context;
+        /* 0x17C */ u32 external_context_size;
+        /* 0x180 */ u32 reserved5;
+        /* 0x184 */ u32 reserved6;
+    };
+    static_assert(sizeof(InParameter2) == 0x188, "VoiceInfo::InParameter2 has the wrong size!");
+
     struct OutStatus {
         /* 0x00 */ u64 played_sample_count;
         /* 0x08 */ u32 wave_buffers_consumed;
@@ -349,6 +400,10 @@ public:
     f32 prev_volume{};
     /// Biquad filters for generating filter commands on this voice
     std::array<BiquadFilterParameter, MaxBiquadFilters> biquads{};
+    /// Float biquad filters for REV15+ (native float coefficients)
+    std::array<BiquadFilterParameter2, MaxBiquadFilters> biquads_float{};
+    /// Use float biquad coefficients (REV15+)
+    bool use_float_biquads{};
     /// Number of active wavebuffers
     u32 wave_buffer_count{};
     /// Current playing wavebuffer index

src/common/settings.h

@@ -161,7 +161,7 @@ struct Values {
                                          Category::LibraryApplet};
     Setting<AppletMode> photo_viewer_applet_mode{
                                                  linkage, AppletMode::LLE, "photo_viewer_applet_mode", Category::LibraryApplet};
-    Setting<AppletMode> offline_web_applet_mode{linkage, AppletMode::HLE, "offline_web_applet_mode",
+    Setting<AppletMode> offline_web_applet_mode{linkage, AppletMode::LLE, "offline_web_applet_mode",
                                                 Category::LibraryApplet};
     Setting<AppletMode> login_share_applet_mode{linkage, AppletMode::HLE, "login_share_applet_mode",
                                                 Category::LibraryApplet};
@@ -735,6 +735,7 @@ struct Values {
     Setting<bool> enable_all_controllers{linkage, false, "enable_all_controllers",
                                          Category::Debugging};
     Setting<bool> perform_vulkan_check{linkage, true, "perform_vulkan_check", Category::Debugging};
+    Setting<bool> disable_web_applet{linkage, true, "disable_web_applet", Category::Debugging};
 
     // Miscellaneous
     Setting<std::string> log_filter{linkage, "*:Info", "log_filter", Category::Miscellaneous};

src/core/file_sys/patch_manager.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -379,6 +382,11 @@ static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType t
         if (romfs_dir != nullptr)
             layers.emplace_back(std::make_shared<CachedVfsDirectory>(std::move(romfs_dir)));
 
+        // Support for romfslite introduced in Atmosphere 1.9.5
+        auto romfslite_dir = FindSubdirectoryCaseless(subdir, "romfslite");
+        if (romfslite_dir != nullptr)
+            layers.emplace_back(std::make_shared<CachedVfsDirectory>(std::move(romfslite_dir)));
+
         auto ext_dir = FindSubdirectoryCaseless(subdir, "romfs_ext");
         if (ext_dir != nullptr)
             layers_ext.emplace_back(std::make_shared<CachedVfsDirectory>(std::move(ext_dir)));
@@ -537,7 +545,8 @@ std::vector<Patch> PatchManager::GetPatches(VirtualFile update_raw) const {
                 if (layeredfs)
                     AppendCommaIfNotEmpty(types, "LayeredExeFS");
             }
-            if (IsDirValidAndNonEmpty(FindSubdirectoryCaseless(mod, "romfs")))
+            if (IsDirValidAndNonEmpty(FindSubdirectoryCaseless(mod, "romfs")) ||
+                IsDirValidAndNonEmpty(FindSubdirectoryCaseless(mod, "romfslite")))
                 AppendCommaIfNotEmpty(types, "LayeredFS");
             if (IsDirValidAndNonEmpty(FindSubdirectoryCaseless(mod, "cheats")))
                 AppendCommaIfNotEmpty(types, "Cheats");
@@ -563,7 +572,8 @@ std::vector<Patch> PatchManager::GetPatches(VirtualFile update_raw) const {
         if (IsDirValidAndNonEmpty(FindSubdirectoryCaseless(sdmc_mod_dir, "exefs"))) {
             AppendCommaIfNotEmpty(types, "LayeredExeFS");
         }
-        if (IsDirValidAndNonEmpty(FindSubdirectoryCaseless(sdmc_mod_dir, "romfs"))) {
+        if (IsDirValidAndNonEmpty(FindSubdirectoryCaseless(sdmc_mod_dir, "romfs")) ||
+            IsDirValidAndNonEmpty(FindSubdirectoryCaseless(sdmc_mod_dir, "romfslite"))) {
             AppendCommaIfNotEmpty(types, "LayeredFS");
         }
 

src/core/hle/service/am/frontend/applet_controller.cpp

@@ -134,6 +134,7 @@ void Controller::Initialize() {
             break;
         case ControllerAppletVersion::Version7:
         case ControllerAppletVersion::Version8:
+        case ControllerAppletVersion::Version9:
             ASSERT(user_arg.size() == sizeof(ControllerSupportArgNew));
             std::memcpy(&controller_user_arg_new, user_arg.data(), user_arg.size());
             break;

src/core/hle/service/am/frontend/applet_controller.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -30,6 +33,7 @@ enum class ControllerAppletVersion : u32_le {
     Version5 = 0x5, // 6.0.0 - 7.0.1
     Version7 = 0x7, // 8.0.0 - 10.2.0
     Version8 = 0x8, // 11.0.0+
+    Version9 = 0x9,
 };
 
 enum class ControllerSupportMode : u8 {

src/core/hle/service/am/frontend/applet_web_browser.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -6,6 +9,7 @@
 #include "common/fs/fs.h"
 #include "common/fs/path_util.h"
 #include "common/logging/log.h"
+#include "common/settings.h"
 #include "common/string_util.h"
 #include "core/core.h"
 #include "core/file_sys/content_archive.h"
@@ -232,6 +236,11 @@ WebBrowser::WebBrowser(Core::System& system_, std::shared_ptr<Applet> applet_,
 WebBrowser::~WebBrowser() = default;
 
 void WebBrowser::Initialize() {
+    if (Settings::values.disable_web_applet) {
+        LOG_INFO(Service_AM, "Web Browser Applet disabled, skipping.");
+        return;
+    }
+
     FrontendApplet::Initialize();
 
     LOG_INFO(Service_AM, "Initializing Web Browser Applet.");
@@ -295,6 +304,11 @@ void WebBrowser::ExecuteInteractive() {
 }
 
 void WebBrowser::Execute() {
+    if (Settings::values.disable_web_applet) {
+        WebBrowserExit(WebExitReason::EndButtonPressed);
+        return;
+    }
+
     switch (web_arg_header.shim_kind) {
     case ShimKind::Shop:
         ExecuteShop();

src/core/hle/service/am/service/library_applet_accessor.cpp

@@ -28,6 +28,7 @@ ILibraryAppletAccessor::ILibraryAppletAccessor(Core::System& system_,
         {30, D<&ILibraryAppletAccessor::GetResult>, "GetResult"},
         {50, nullptr, "SetOutOfFocusApplicationSuspendingEnabled"},
         {60, D<&ILibraryAppletAccessor::PresetLibraryAppletGpuTimeSliceZero>, "PresetLibraryAppletGpuTimeSliceZero"},
+        {90, D<&ILibraryAppletAccessor::Unknown90>, "Unknown90"},
         {100, D<&ILibraryAppletAccessor::PushInData>, "PushInData"},
         {101, D<&ILibraryAppletAccessor::PopOutData>, "PopOutData"},
         {102, nullptr, "PushExtraStorage"},
@@ -96,6 +97,11 @@ Result ILibraryAppletAccessor::Terminate() {
     R_SUCCEED();
 }
 
+Result ILibraryAppletAccessor::Unknown90() {
+    LOG_WARNING(Service_AM, "(STUBBED) called");
+    R_SUCCEED();
+}
+
 Result ILibraryAppletAccessor::PushInData(SharedPointer<IStorage> storage) {
     LOG_DEBUG(Service_AM, "called");
     m_broker->GetInData().Push(storage);

src/core/hle/service/am/service/library_applet_accessor.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -26,6 +29,7 @@ private:
     Result Start();
     Result RequestExit();
     Result Terminate();
+    Result Unknown90();
     Result PushInData(SharedPointer<IStorage> storage);
     Result PopOutData(Out<SharedPointer<IStorage>> out_storage);
     Result PushInteractiveInData(SharedPointer<IStorage> storage);

src/core/hle/service/am/service/library_applet_creator.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -175,6 +178,7 @@ ILibraryAppletCreator::ILibraryAppletCreator(Core::System& system_, std::shared_
         {0, D<&ILibraryAppletCreator::CreateLibraryApplet>, "CreateLibraryApplet"},
         {1, nullptr, "TerminateAllLibraryApplets"},
         {2, nullptr, "AreAnyLibraryAppletsLeft"},
+        {3, D<&ILibraryAppletCreator::CreateLibraryAppletEx>, "CreateLibraryAppletEx"},
         {10, D<&ILibraryAppletCreator::CreateStorage>, "CreateStorage"},
         {11, D<&ILibraryAppletCreator::CreateTransferMemoryStorage>, "CreateTransferMemoryStorage"},
         {12, D<&ILibraryAppletCreator::CreateHandleStorage>, "CreateHandleStorage"},
@@ -210,6 +214,32 @@ Result ILibraryAppletCreator::CreateLibraryApplet(
     R_SUCCEED();
 }
 
+Result ILibraryAppletCreator::CreateLibraryAppletEx(
+    Out<SharedPointer<ILibraryAppletAccessor>> out_library_applet_accessor, AppletId applet_id,
+    LibraryAppletMode library_applet_mode, u64 thread_id) {
+    LOG_DEBUG(Service_AM, "called with applet_id={} applet_mode={} thread_id={}", applet_id,
+              library_applet_mode, thread_id);
+
+    std::shared_ptr<ILibraryAppletAccessor> library_applet;
+    if (ShouldCreateGuestApplet(applet_id)) {
+        library_applet =
+            CreateGuestApplet(system, m_window_system, m_applet, applet_id, library_applet_mode);
+    }
+    if (!library_applet) {
+        library_applet =
+            CreateFrontendApplet(system, m_window_system, m_applet, applet_id, library_applet_mode);
+    }
+    if (!library_applet) {
+        LOG_ERROR(Service_AM, "Applet doesn't exist! applet_id={}", applet_id);
+        R_THROW(ResultUnknown);
+    }
+
+    // Applet is created, can now be launched.
+    m_applet->library_applet_launchable_event.Signal();
+    *out_library_applet_accessor = library_applet;
+    R_SUCCEED();
+}
+
 Result ILibraryAppletCreator::CreateStorage(Out<SharedPointer<IStorage>> out_storage, s64 size) {
     LOG_DEBUG(Service_AM, "called, size={}", size);
 

src/core/hle/service/am/service/library_applet_creator.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -24,6 +27,9 @@ private:
     Result CreateLibraryApplet(
         Out<SharedPointer<ILibraryAppletAccessor>> out_library_applet_accessor, AppletId applet_id,
         LibraryAppletMode library_applet_mode);
+    Result CreateLibraryAppletEx(
+        Out<SharedPointer<ILibraryAppletAccessor>> out_library_applet_accessor, AppletId applet_id,
+        LibraryAppletMode library_applet_mode, u64 thread_id);
     Result CreateStorage(Out<SharedPointer<IStorage>> out_storage, s64 size);
     Result CreateTransferMemoryStorage(
         Out<SharedPointer<IStorage>> out_storage, bool is_writable, s64 size,

src/core/hle/service/ns/application_manager_interface.cpp

@@ -128,6 +128,7 @@ IApplicationManagerInterface::IApplicationManagerInterface(Core::System& system_
         {406, nullptr, "GetApplicationControlProperty"},
         {407, nullptr, "ListApplicationTitle"},
         {408, nullptr, "ListApplicationIcon"},
+        {419, D<&IApplicationManagerInterface::RequestDownloadApplicationControlDataInBackground>, "RequestDownloadApplicationControlDataInBackground"},
         {502, nullptr, "RequestCheckGameCardRegistration"},
         {503, nullptr, "RequestGameCardRegistrationGoldPoint"},
         {504, nullptr, "RequestRegisterGameCard"},
@@ -210,6 +211,7 @@ IApplicationManagerInterface::IApplicationManagerInterface(Core::System& system_
         {1703, nullptr, "GetApplicationViewDownloadErrorContext"},
         {1704, D<&IApplicationManagerInterface::GetApplicationViewWithPromotionInfo>, "GetApplicationViewWithPromotionInfo"},
         {1705, nullptr, "IsPatchAutoDeletableApplication"},
+        {1706, D<&IApplicationManagerInterface::Unknown1706>, "Unknown1706"},
         {1800, nullptr, "IsNotificationSetupCompleted"},
         {1801, nullptr, "GetLastNotificationInfoCount"},
         {1802, nullptr, "ListLastNotificationInfo"},
@@ -309,6 +311,7 @@ IApplicationManagerInterface::IApplicationManagerInterface(Core::System& system_
         {4022, D<&IApplicationManagerInterface::Unknown4022>, "Unknown4022"},
         {4023, D<&IApplicationManagerInterface::Unknown4023>, "Unknown4023"},
         {4088, D<&IApplicationManagerInterface::Unknown4022>, "Unknown4088"},
+        {4053, D<&IApplicationManagerInterface::Unknown4053>, "Unknown4053"},
         {9999, nullptr, "GetApplicationCertificate"},
     };
     // clang-format on
@@ -526,6 +529,37 @@ Result IApplicationManagerInterface::GetApplicationTerminateResult(Out<Result> o
     R_SUCCEED();
 }
 
+Result IApplicationManagerInterface::RequestDownloadApplicationControlDataInBackground(
+    u64 unk, u64 application_id) {
+    LOG_WARNING(Service_NS, "(STUBBED), app={:016X} unk={}", application_id, unk);
+    R_SUCCEED();
+}
+
+Result IApplicationManagerInterface::Unknown1706(
+    OutBuffer<BufferAttr_HipcAutoSelect> out_buffer_58,
+    InBuffer<BufferAttr_HipcMapAlias> in_buffer_8) {
+    LOG_WARNING(Service_NS, "(STUBBED) Unknown1706 called: out_size={} in_size={}",
+                out_buffer_58.size(), in_buffer_8.size());
+
+    if (out_buffer_58.size() < 0x58 || in_buffer_8.size() < 0x8) {
+        R_THROW(ResultUnknown);
+    }
+
+    u64 application_id = 0;
+    std::memcpy(&application_id, in_buffer_8.data(), sizeof(u64));
+
+    ApplicationView view{};
+    view.application_id = application_id;
+    view.unk = 0x70000;
+    view.flags = 0x401f17;
+
+    std::memset(out_buffer_58.data(), 0, out_buffer_58.size());
+    std::memcpy(out_buffer_58.data(), &view, sizeof(ApplicationView));
+
+
+    R_SUCCEED();
+}
+
 Result IApplicationManagerInterface::Unknown4022(
     OutCopyHandle<Kernel::KReadableEvent> out_event) {
     LOG_WARNING(Service_NS, "(STUBBED) called");
@@ -539,4 +573,9 @@ Result IApplicationManagerInterface::Unknown4023(Out<u64> out_result) {
     R_SUCCEED();
 }
 
+Result IApplicationManagerInterface::Unknown4053() {
+    LOG_WARNING(Service_NS, "(STUBBED) called.");
+    R_SUCCEED();
+}
+
 } // namespace Service::NS

src/core/hle/service/ns/application_manager_interface.h

@@ -55,6 +55,12 @@ public:
     Result GetApplicationTerminateResult(Out<Result> out_result, u64 application_id);
     Result Unknown4022(OutCopyHandle<Kernel::KReadableEvent> out_event);
     Result Unknown4023(Out<u64> out_result);
+    Result Unknown4053();
+
+    Result RequestDownloadApplicationControlDataInBackground(u64 unk,
+                                                             u64 application_id);
+    Result Unknown1706(OutBuffer<BufferAttr_HipcAutoSelect> out_buffer_58,
+                       InBuffer<BufferAttr_HipcMapAlias> in_buffer_8);
 
 private:
     KernelHelpers::ServiceContext service_context;

src/core/hle/service/ns/ns_types.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -81,10 +84,11 @@ static_assert(sizeof(PromotionInfo) == 0x20, "PromotionInfo has incorrect size."
 
 /// NsApplicationViewWithPromotionInfo
 struct ApplicationViewWithPromotionInfo {
-    ApplicationView view;    ///< \ref NsApplicationView
-    PromotionInfo promotion; ///< \ref NsPromotionInfo
+    ApplicationView view;           ///< \ref NsApplicationView
+    PromotionInfo promotion;        ///< \ref NsPromotionInfo
+    std::array<u8, 0x8> padding{};  ///< Extra padding for newer HOS versions
 };
-static_assert(sizeof(ApplicationViewWithPromotionInfo) == 0x70,
+static_assert(sizeof(ApplicationViewWithPromotionInfo) == 0x78,
               "ApplicationViewWithPromotionInfo has incorrect size.");
 
 struct ApplicationOccupiedSizeEntity {
@@ -113,4 +117,10 @@ struct Uid {
 };
 static_assert(sizeof(Uid) == 0x10, "Uid has incorrect size.");
 
+struct ApplicationDisplayData {
+    std::array<char, 0x200> application_name;
+    std::array<char, 0x100> developer_name;
+};
+static_assert(sizeof(ApplicationDisplayData) == 0x300, "ApplicationDisplayData has incorrect size.");
+
 } // namespace Service::NS

src/core/hle/service/ns/read_only_application_control_data_interface.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -7,6 +10,7 @@
 #include "core/file_sys/vfs/vfs.h"
 #include "core/hle/service/cmif_serialization.h"
 #include "core/hle/service/ns/language.h"
+#include "core/hle/service/ns/ns_types.h"
 #include "core/hle/service/ns/ns_results.h"
 #include "core/hle/service/ns/read_only_application_control_data_interface.h"
 #include "core/hle/service/set/settings_server.h"
@@ -23,6 +27,7 @@ IReadOnlyApplicationControlDataInterface::IReadOnlyApplicationControlDataInterfa
         {2, D<&IReadOnlyApplicationControlDataInterface::ConvertApplicationLanguageToLanguageCode>, "ConvertApplicationLanguageToLanguageCode"},
         {3, nullptr, "ConvertLanguageCodeToApplicationLanguage"},
         {4, nullptr, "SelectApplicationDesiredLanguage"},
+        {5, D<&IReadOnlyApplicationControlDataInterface::GetApplicationDisplayData>, "GetApplicationDisplayData"},
     };
     // clang-format on
 
@@ -119,4 +124,33 @@ Result IReadOnlyApplicationControlDataInterface::ConvertApplicationLanguageToLan
     R_SUCCEED();
 }
 
+Result IReadOnlyApplicationControlDataInterface::GetApplicationDisplayData(
+    OutBuffer<BufferAttr_HipcMapAlias> out_buffer, Out<u64> out_size, u64 language_code,
+    u64 application_id) {
+    LOG_INFO(Service_NS, "called with application_id={:016X}, language_code={:016X}",
+             application_id, language_code);
+
+    constexpr u64 payload_size = sizeof(ApplicationDisplayData);
+
+    if (out_buffer.size() < payload_size) {
+        LOG_ERROR(Service_NS, "output buffer is too small! (actual={}, expected_min={})",
+                  out_buffer.size(), payload_size);
+        R_THROW(ResultUnknown);
+    }
+
+    const FileSys::PatchManager pm{application_id, system.GetFileSystemController(),
+                                   system.GetContentProvider()};
+    const auto control = pm.GetControlMetadata();
+
+    ApplicationDisplayData display_data{};
+
+    std::memset(display_data.application_name.data(), 0, display_data.application_name.size());
+    std::memset(display_data.developer_name.data(), 0, display_data.developer_name.size());
+
+    std::memcpy(out_buffer.data(), &display_data, payload_size);
+    *out_size = payload_size;
+
+    R_SUCCEED();
+}
+
 } // namespace Service::NS

src/core/hle/service/ns/read_only_application_control_data_interface.h

@@ -1,12 +1,15 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #pragma once
 
 #include "core/hle/service/cmif_types.h"
+#include "core/hle/service/service.h"
 #include "core/hle/service/ns/language.h"
 #include "core/hle/service/ns/ns_types.h"
-#include "core/hle/service/service.h"
 
 namespace Service::NS {
 
@@ -16,7 +19,6 @@ public:
     explicit IReadOnlyApplicationControlDataInterface(Core::System& system_);
     ~IReadOnlyApplicationControlDataInterface() override;
 
-public:
     Result GetApplicationControlData(OutBuffer<BufferAttr_HipcMapAlias> out_buffer,
                                      Out<u32> out_actual_size,
                                      ApplicationControlSource application_control_source,
@@ -25,6 +27,10 @@ public:
                                          u32 supported_languages);
     Result ConvertApplicationLanguageToLanguageCode(Out<u64> out_language_code,
                                                     ApplicationLanguage application_language);
+
+    Result GetApplicationDisplayData(OutBuffer<BufferAttr_HipcMapAlias> out_buffer,
+                                     Out<u64> out_size, u64 language_code,
+                                     u64 application_id);
 };
 
 } // namespace Service::NS

src/core/hle/service/ns/read_only_application_record_interface.cpp

@@ -1,8 +1,13 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include "core/hle/service/cmif_serialization.h"
 #include "core/hle/service/ns/read_only_application_record_interface.h"
+#include "core/hle/service/ns/ns_types.h"
+#include "core/hle/service/ns/application_manager_interface.h"
 
 namespace Service::NS {
 
@@ -13,6 +18,8 @@ IReadOnlyApplicationRecordInterface::IReadOnlyApplicationRecordInterface(Core::S
         {1, nullptr, "NotifyApplicationFailure"},
         {2, D<&IReadOnlyApplicationRecordInterface::IsDataCorruptedResult>,
          "IsDataCorruptedResult"},
+        {3, D<&IReadOnlyApplicationRecordInterface::ListApplicationRecord>,
+         "ListApplicationRecord"},
     };
     // clang-format on
 
@@ -35,4 +42,14 @@ Result IReadOnlyApplicationRecordInterface::IsDataCorruptedResult(
     R_SUCCEED();
 }
 
+Result IReadOnlyApplicationRecordInterface::ListApplicationRecord(
+    OutArray<ApplicationRecord, BufferAttr_HipcMapAlias> out_records, Out<s32> out_count,
+    s32 entry_offset) {
+    LOG_DEBUG(Service_NS, "delegating to IApplicationManagerInterface::ListApplicationRecord, offset={} limit={}",
+              entry_offset, out_records.size());
+
+    R_RETURN(IApplicationManagerInterface(system).ListApplicationRecord(out_records, out_count,
+                                                                        entry_offset));
+}
+
 } // namespace Service::NS

src/core/hle/service/ns/read_only_application_record_interface.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -5,6 +8,7 @@
 
 #include "core/hle/service/cmif_types.h"
 #include "core/hle/service/service.h"
+#include "core/hle/service/ns/ns_types.h"
 
 namespace Service::NS {
 
@@ -17,6 +21,9 @@ public:
 private:
     Result HasApplicationRecord(Out<bool> out_has_application_record, u64 program_id);
     Result IsDataCorruptedResult(Out<bool> out_is_data_corrupted_result, Result result);
+    Result ListApplicationRecord(
+        OutArray<ApplicationRecord, BufferAttr_HipcMapAlias> out_records, Out<s32> out_count,
+        s32 entry_offset);
 };
 
 } // namespace Service::NS

src/core/hle/service/pctl/parental_control_service.cpp

@@ -38,6 +38,7 @@ IParentalControlService::IParentalControlService(Core::System& system_, Capabili
         {1016, nullptr, "ConfirmShowNewsPermission"},
         {1017, D<&IParentalControlService::EndFreeCommunication>, "EndFreeCommunication"},
         {1018, D<&IParentalControlService::IsFreeCommunicationAvailable>, "IsFreeCommunicationAvailable"},
+        {1019, D<&IParentalControlService::ConfirmLaunchApplicationPermission>, "ConfirmLaunchApplicationPermission"},
         {1031, D<&IParentalControlService::IsRestrictionEnabled>, "IsRestrictionEnabled"},
         {1032, D<&IParentalControlService::GetSafetyLevel>, "GetSafetyLevel"},
         {1033, nullptr, "SetSafetyLevel"},

src/frontend_common/CMakeLists.txt

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 # SPDX-FileCopyrightText: 2023 yuzu Emulator Project
 # SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -7,6 +10,7 @@ add_library(frontend_common STATIC
     content_manager.h
     firmware_manager.h
     firmware_manager.cpp
+    data_manager.h data_manager.cpp
 )
 
 create_target_directory_groups(frontend_common)

src/frontend_common/data_manager.cpp

@@ -0,0 +1,77 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "data_manager.h"
+#include "common/assert.h"
+#include "common/fs/path_util.h"
+#include <filesystem>
+#include <fmt/format.h>
+
+namespace FrontendCommon::DataManager {
+
+namespace fs = std::filesystem;
+
+const std::string GetDataDir(DataDir dir, const std::string &user_id)
+{
+    const fs::path nand_dir = Common::FS::GetEdenPath(Common::FS::EdenPath::NANDDir);
+
+    switch (dir) {
+    case DataDir::Saves:
+        return (nand_dir / "user" / "save" / "0000000000000000" / user_id).string();
+    case DataDir::UserNand:
+        return (nand_dir / "user" / "Contents" / "registered").string();
+    case DataDir::SysNand:
+        // NB: do NOT delete save
+        // that contains profile data and other stuff
+        return (nand_dir / "system" / "Contents" / "registered").string();
+    case DataDir::Mods:
+        return Common::FS::GetEdenPathString(Common::FS::EdenPath::LoadDir);
+    case DataDir::Shaders:
+        return Common::FS::GetEdenPathString(Common::FS::EdenPath::ShaderDir);
+    default:
+        UNIMPLEMENTED();
+    }
+
+    return "";
+}
+
+u64 ClearDir(DataDir dir, const std::string &user_id)
+{
+    fs::path data_dir = GetDataDir(dir, user_id);
+    u64 result = fs::remove_all(data_dir);
+
+    // mkpath at the end just so it actually exists
+    fs::create_directories(data_dir);
+    return result;
+}
+
+const std::string ReadableBytesSize(u64 size)
+{
+    static constexpr std::array units{"B", "KiB", "MiB", "GiB", "TiB", "PiB"};
+    if (size == 0) {
+        return "0 B";
+    }
+
+    const int digit_groups = (std::min) (static_cast<int>(std::log10(size) / std::log10(1024)),
+                                         static_cast<int>(units.size()));
+    return fmt::format("{:.1f} {}", size / std::pow(1024, digit_groups), units[digit_groups]);
+}
+
+u64 DataDirSize(DataDir dir)
+{
+    fs::path data_dir = GetDataDir(dir);
+    u64 size = 0;
+
+    if (!fs::exists(data_dir))
+        return 0;
+
+    for (const auto& entry : fs::recursive_directory_iterator(data_dir)) {
+        if (!entry.is_directory()) {
+            size += entry.file_size();
+        }
+    }
+
+    return size;
+}
+
+}

src/frontend_common/data_manager.h

@@ -0,0 +1,24 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef DATA_MANAGER_H
+#define DATA_MANAGER_H
+
+#include "common/common_types.h"
+#include <string>
+
+namespace FrontendCommon::DataManager {
+
+enum class DataDir { Saves, UserNand, SysNand, Mods, Shaders };
+
+const std::string GetDataDir(DataDir dir, const std::string &user_id = "");
+
+u64 ClearDir(DataDir dir, const std::string &user_id = "");
+
+const std::string ReadableBytesSize(u64 size);
+
+u64 DataDirSize(DataDir dir);
+
+}; // namespace FrontendCommon::DataManager
+
+#endif // DATA_MANAGER_H

src/hid_core/resources/npad/npad_types.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -159,6 +162,17 @@ struct NpadGcTriggerState {
 };
 static_assert(sizeof(NpadGcTriggerState) == 0x10, "NpadGcTriggerState is an invalid size");
 
+// This is nn::hid::NpadCondition (global controller condition structure)
+struct NpadCondition {
+    u32 _00{};
+    u32 is_initialized{1};
+    u32 hold_type{static_cast<u32>(NpadJoyHoldType::Horizontal)};
+    u32 is_valid{1};
+};
+static_assert(sizeof(NpadCondition) == 0x10, "NpadCondition is an invalid size");
+
+
+
 // This is nn::hid::NpadSystemProperties
 struct NPadSystemProperties {
     union {

src/hid_core/resources/ring_lifo.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -44,8 +47,7 @@ struct Lifo {
             buffer_count++;
         }
         buffer_tail = GetNextEntryIndex();
-        const auto& previous_entry = ReadPreviousEntry();
-        entries[buffer_tail].sampling_number = previous_entry.sampling_number + 1;
+        entries[buffer_tail].sampling_number = new_state.sampling_number << 1;
         entries[buffer_tail].state = new_state;
     }
 };

src/hid_core/resources/shared_memory_format.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -201,7 +204,9 @@ static_assert(sizeof(ConsoleSixAxisSensorSharedMemoryFormat) == 0x20,
 
 // This is nn::hid::detail::SharedMemoryFormat
 struct SharedMemoryFormat {
-    void Initialize() {}
+    void Initialize() {
+        npad_condition = NpadCondition{};
+    }
 
     DebugPadSharedMemoryFormat debug_pad;
     TouchScreenSharedMemoryFormat touch_screen;
@@ -218,7 +223,9 @@ struct SharedMemoryFormat {
     ConsoleSixAxisSensorSharedMemoryFormat console;
     INSERT_PADDING_BYTES(0x19E0);
     MouseSharedMemoryFormat debug_mouse;
-    INSERT_PADDING_BYTES(0x2000);
+    INSERT_PADDING_BYTES(0x200);
+    NpadCondition npad_condition;
+    INSERT_PADDING_BYTES(0x1DF0);
 };
 static_assert(offsetof(SharedMemoryFormat, debug_pad) == 0x0, "debug_pad has wrong offset");
 static_assert(offsetof(SharedMemoryFormat, touch_screen) == 0x400, "touch_screen has wrong offset");
@@ -236,6 +243,8 @@ static_assert(offsetof(SharedMemoryFormat, npad) == 0x9A00, "npad has wrong offs
 static_assert(offsetof(SharedMemoryFormat, gesture) == 0x3BA00, "gesture has wrong offset");
 static_assert(offsetof(SharedMemoryFormat, console) == 0x3C200, "console has wrong offset");
 static_assert(offsetof(SharedMemoryFormat, debug_mouse) == 0x3DC00, "debug_mouse has wrong offset");
+static_assert(offsetof(SharedMemoryFormat, npad_condition) == 0x3E200,
+              "npad_condition has wrong offset");
 static_assert(sizeof(SharedMemoryFormat) == 0x40000, "SharedMemoryFormat is an invalid size");
 
 } // namespace Service::HID

src/qt_common/CMakeLists.txt

@@ -1,50 +1,82 @@
 # SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-# SPDX-FileCopyrightText: 2023 yuzu Emulator Project
-# SPDX-License-Identifier: GPL-2.0-or-later
-
-find_package(Qt6 REQUIRED COMPONENTS Core)
-find_package(Qt6 REQUIRED COMPONENTS Core)
-
 add_library(qt_common STATIC
     qt_common.h
     qt_common.cpp
 
-    uisettings.cpp
-    uisettings.h
+    config/uisettings.cpp
+    config/uisettings.h
+    config/qt_config.cpp
+    config/qt_config.h
+    config/shared_translation.cpp
+    config/shared_translation.h
 
-    qt_config.cpp
-    qt_config.h
+    util/path.h util/path.cpp
+    util/game.h util/game.cpp
+    util/meta.h util/meta.cpp
+    util/content.h util/content.cpp
+    util/rom.h util/rom.cpp
+    util/applet.h util/applet.cpp
+    util/compress.h util/compress.cpp
 
-    shared_translation.cpp
-    shared_translation.h
-    qt_path_util.h qt_path_util.cpp
-    qt_game_util.h qt_game_util.cpp
-    qt_frontend_util.h qt_frontend_util.cpp
-    qt_meta.h qt_meta.cpp
-    qt_content_util.h qt_content_util.cpp
-    qt_rom_util.h qt_rom_util.cpp
-    qt_applet_util.h qt_applet_util.cpp
-    qt_progress_dialog.h qt_progress_dialog.cpp
+    abstract/qt_frontend_util.h abstract/qt_frontend_util.cpp
+    abstract/qt_progress_dialog.h abstract/qt_progress_dialog.cpp
 
+    qt_string_lookup.h
+    qt_compat.h
+
+    discord/discord.h
 )
 
 create_target_directory_groups(qt_common)
 
+if (USE_DISCORD_PRESENCE)
+    target_sources(qt_common PRIVATE
+        discord/discord_impl.cpp
+        discord/discord_impl.h
+    )
+    target_link_libraries(qt_common PUBLIC DiscordRPC::discord-rpc Qt6::Network)
+    target_compile_definitions(qt_common PUBLIC USE_DISCORD_PRESENCE)
+endif()
+
 # TODO(crueter)
 if (ENABLE_QT)
     target_link_libraries(qt_common PRIVATE Qt6::Widgets)
 endif()
 
+target_compile_definitions(qt_common PUBLIC
+    # Use QStringBuilder for string concatenation to reduce
+    # the overall number of temporary strings created.
+    QT_USE_QSTRINGBUILDER
+
+    # Disable implicit conversions from/to C strings
+    QT_NO_CAST_FROM_ASCII
+    QT_NO_CAST_TO_ASCII
+
+    # Disable implicit type narrowing in signal/slot connect() calls.
+    QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
+
+    # Disable unsafe overloads of QProcess' start() function.
+    QT_NO_PROCESS_COMBINED_ARGUMENT_START
+
+    # Disable implicit QString->QUrl conversions to enforce use of proper resolving functions.
+    QT_NO_URL_CAST_FROM_STRING
+)
+
 add_subdirectory(externals)
 
-target_link_libraries(qt_common PRIVATE core Qt6::Core SimpleIni::SimpleIni QuaZip::QuaZip)
+target_link_libraries(qt_common PRIVATE core Qt6::Core Qt6::Concurrent SimpleIni::SimpleIni QuaZip::QuaZip)
+target_link_libraries(qt_common PUBLIC frozen::frozen)
 
 if (NOT APPLE AND ENABLE_OPENGL)
     target_compile_definitions(qt_common PUBLIC HAS_OPENGL)
 endif()
 
-if (NOT WIN32)
-    target_include_directories(qt_common PRIVATE ${Qt6Gui_PRIVATE_INCLUDE_DIRS})
+if (UNIX AND NOT APPLE)
+    if (TARGET Qt6::GuiPrivate)
+        target_link_libraries(qt_common PRIVATE Qt6::GuiPrivate)
+    else()
+        target_include_directories(qt_common PRIVATE ${Qt6Gui_PRIVATE_INCLUDE_DIRS})
+    endif()
 endif()

src/qt_common/abstract/qt_frontend_util.cpp

@@ -32,4 +32,15 @@ const QString GetOpenFileName(const QString &title,
 #endif
 }
 
+const QString GetSaveFileName(const QString &title,
+                              const QString &dir,
+                              const QString &filter,
+                              QString *selectedFilter,
+                              Options options)
+{
+#ifdef YUZU_QT_WIDGETS
+    return QFileDialog::getSaveFileName((QWidget *) rootObject, title, dir, filter, selectedFilter, options);
+#endif
+}
+
 } // namespace QtCommon::Frontend

src/qt_common/abstract/qt_frontend_util.h

@@ -97,10 +97,10 @@ Q_ENUM_NS(Icon)
 
 // TODO(crueter) widgets-less impl, choices et al.
 StandardButton ShowMessage(Icon icon,
-                                        const QString &title,
-                                        const QString &text,
-                                        StandardButtons buttons = StandardButton::NoButton,
-                                        QObject *parent = nullptr);
+                           const QString &title,
+                           const QString &text,
+                           StandardButtons buttons = StandardButton::NoButton,
+                           QObject *parent = nullptr);
 
 #define UTIL_OVERRIDES(level) \
     inline StandardButton level(QObject *parent, \
@@ -110,21 +110,6 @@ StandardButton ShowMessage(Icon icon,
     { \
         return ShowMessage(Icon::level, title, text, buttons, parent); \
     } \
-    inline StandardButton level(QObject *parent, \
-                                             const char *title, \
-                                             const char *text, \
-                                             StandardButtons buttons \
-                                             = StandardButton::Ok) \
-    { \
-        return ShowMessage(Icon::level, tr(title), tr(text), buttons, parent); \
-    } \
-    inline StandardButton level(const char *title, \
-                                             const char *text, \
-                                             StandardButtons buttons \
-                                             = StandardButton::Ok) \
-    { \
-        return ShowMessage(Icon::level, tr(title), tr(text), buttons, rootObject); \
-    } \
     inline StandardButton level(const QString title, \
                                              const QString &text, \
                                              StandardButtons buttons \
@@ -144,5 +129,11 @@ const QString GetOpenFileName(const QString &title,
                               QString *selectedFilter = nullptr,
                               Options options = Options());
 
+const QString GetSaveFileName(const QString &title,
+                              const QString &dir,
+                              const QString &filter,
+                              QString *selectedFilter = nullptr,
+                              Options options = Options());
+
 } // namespace QtCommon::Frontend
 #endif // QT_FRONTEND_UTIL_H

src/qt_common/config/shared_translation.cpp

@@ -14,7 +14,7 @@
 #include "common/settings_enums.h"
 #include "common/settings_setting.h"
 #include "common/time_zone.h"
-#include "qt_common/uisettings.h"
+#include "qt_common/config/uisettings.h"
 #include <map>
 #include <memory>
 #include <utility>

src/qt_common/config/uisettings.cpp

@@ -7,7 +7,7 @@
 #include <QSettings>
 #include "common/fs/fs.h"
 #include "common/fs/path_util.h"
-#include "qt_common/uisettings.h"
+#include "qt_common/config/uisettings.h"
 
 #ifndef CANNOT_EXPLICITLY_INSTANTIATE
 namespace Settings {

src/qt_common/config/uisettings.h

@@ -17,7 +17,7 @@
 #include "common/common_types.h"
 #include "common/settings.h"
 #include "common/settings_enums.h"
-#include "qt_common/qt_config.h"
+#include "qt_common/config/qt_config.h"
 
 using Settings::Category;
 using Settings::ConfirmStop;
@@ -139,7 +139,7 @@ struct Values {
                                       Settings::Specialization::Default,
                                       true,
                                       true};
-    Setting<bool> disable_web_applet{linkage, true, "disable_web_applet", Category::Ui};
+
     Setting<bool> check_for_updates{linkage, true, "check_for_updates", Category::UiGeneral};
 
     // Discord RPC

src/qt_common/discord/discord.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2018 Citra Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 

src/qt_common/discord/discord_impl.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2018 Citra Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -15,13 +18,13 @@
 #include "common/string_util.h"
 #include "core/core.h"
 #include "core/loader/loader.h"
-#include "yuzu/discord_impl.h"
+#include "qt_common/discord/discord_impl.h"
 
 namespace DiscordRPC {
 
 DiscordImpl::DiscordImpl(Core::System& system_) : system{system_} {
     DiscordEventHandlers handlers{};
-    // The number is the client ID for yuzu, it's used for images and the
+    // The number is the client ID for Eden, it's used for images and the
     // application name
     Discord_Initialize("1397286652128264252", &handlers, 1, nullptr);
 }
@@ -61,7 +64,7 @@ std::string DiscordImpl::GetGameString(const std::string& title) {
 }
 
 void DiscordImpl::UpdateGameStatus(bool use_default) {
-    const std::string default_text = "eden is an emulator for the Nintendo Switch";
+    const std::string default_text = "Eden is an emulator for the Nintendo Switch";
     const std::string default_image = "https://git.eden-emu.dev/eden-emu/eden/raw/branch/master/"
                                       "dist/qt_themes/default/icons/256x256/eden_named.png";
     const std::string url = use_default ? default_image : game_url;
@@ -81,7 +84,7 @@ void DiscordImpl::UpdateGameStatus(bool use_default) {
 }
 
 void DiscordImpl::Update() {
-    const std::string default_text = "eden is an emulator for the Nintendo Switch";
+    const std::string default_text = "Eden is an emulator for the Nintendo Switch";
     const std::string default_image = "https://git.eden-emu.dev/eden-emu/eden/raw/branch/master/"
                                       "dist/qt_themes/default/icons/256x256/eden_named.png";
 

src/qt_common/discord/discord_impl.h

@@ -1,9 +1,14 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: 2018 Citra Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #pragma once
 
-#include "yuzu/discord.h"
+#include "discord.h"
+
+#include <string>
 
 namespace Core {
 class System;

src/qt_common/externals/CMakeLists.txt

@@ -16,5 +16,4 @@ set_directory_properties(PROPERTIES EXCLUDE_FROM_ALL ON)
 AddJsonPackage(quazip)
 
 # frozen
-# TODO(crueter): Qt String Lookup
-# AddJsonPackage(frozen)
+AddJsonPackage(frozen)

src/qt_common/qt_compat.h

@@ -0,0 +1,14 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <QtVersionChecks>
+
+#if QT_VERSION < QT_VERSION_CHECK(6, 9, 0)
+#define STATE_CHANGED stateChanged
+#define CHECKSTATE_TYPE int
+#else
+#define STATE_CHANGED checkStateChanged
+#define CHECKSTATE_TYPE Qt::CheckState
+#endif

src/qt_common/qt_string_lookup.h

@@ -0,0 +1,38 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <QString>
+#include <frozen/string.h>
+#include <frozen/unordered_map.h>
+#include <qobjectdefs.h>
+#include <qtmetamacros.h>
+
+namespace QtCommon::StringLookup {
+
+Q_NAMESPACE
+
+// TODO(crueter): QML interface
+enum StringKey {
+    SavesTooltip,
+    ShadersTooltip,
+    UserNandTooltip,
+    SysNandTooltip,
+    ModsTooltip,
+};
+
+static constexpr const frozen::unordered_map<StringKey, frozen::string, 5> strings = {
+    {SavesTooltip, "Contains game save data. DO NOT REMOVE UNLESS YOU KNOW WHAT YOU'RE DOING!"},
+    {ShadersTooltip, "Contains Vulkan and OpenGL pipeline caches. Generally safe to remove."},
+    {UserNandTooltip, "Contains updates and DLC for games."},
+    {SysNandTooltip, "Contains firmware and applet data."},
+    {ModsTooltip, "Contains game mods, patches, and cheats."},
+};
+
+static inline const QString Lookup(StringKey key)
+{
+    return QString::fromStdString(strings.at(key).data());
+}
+
+}

src/qt_common/util/applet.cpp

@@ -1,4 +1,4 @@
 // SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#include "qt_applet_util.h"
+#include "qt_common/util/applet.h"

src/qt_common/util/compress.cpp

@@ -0,0 +1,355 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "compress.h"
+#include "quazipfileinfo.h"
+
+#include <QDirIterator>
+#include <quazipfile.h>
+
+/** This is a modified version of JlCompress **/
+namespace QtCommon::Compress {
+
+bool compressDir(QString fileCompressed,
+                 QString dir,
+                 const Options &options,
+                 QtCommon::QtProgressCallback callback)
+{
+    // Create zip
+    QuaZip zip(fileCompressed);
+    QDir().mkpath(QFileInfo(fileCompressed).absolutePath());
+    if (!zip.open(QuaZip::mdCreate)) {
+        QFile::remove(fileCompressed);
+        return false;
+    }
+
+    // See how big the overall fs structure is
+    // good approx. of total progress
+    // TODO(crueter): QDirListing impl... or fs::recursive_dir_iterator
+    QDirIterator iter(dir,
+                      QDir::NoDotAndDotDot | QDir::Hidden | QDir::Files,
+                      QDirIterator::Subdirectories);
+
+    std::size_t total = 0;
+    while (iter.hasNext()) {
+        total += iter.nextFileInfo().size();
+    }
+
+    std::size_t progress = 0;
+    callback(total, progress);
+
+    // Add the files and subdirectories
+    if (!compressSubDir(&zip, dir, dir, options, total, progress, callback)) {
+        QFile::remove(fileCompressed);
+        return false;
+    }
+
+    // Close zip
+    zip.close();
+    if (zip.getZipError() != 0) {
+        QFile::remove(fileCompressed);
+        return false;
+    }
+
+    return true;
+}
+
+bool compressSubDir(QuaZip *zip,
+                    QString dir,
+                    QString origDir,
+                    const Options &options,
+                    std::size_t total,
+                    std::size_t &progress,
+                    QtProgressCallback callback)
+{
+    // zip: object where to add the file
+    // dir: current real directory
+    // origDir: original real directory
+    // (path(dir)-path(origDir)) = path inside the zip object
+
+    if (!zip)
+        return false;
+    if (zip->getMode() != QuaZip::mdCreate && zip->getMode() != QuaZip::mdAppend
+        && zip->getMode() != QuaZip::mdAdd)
+        return false;
+
+    QDir directory(dir);
+    if (!directory.exists())
+        return false;
+
+
+    QDir origDirectory(origDir);
+    if (dir != origDir) {
+        QuaZipFile dirZipFile(zip);
+        std::unique_ptr<QuaZipNewInfo> qzni;
+        if (options.getDateTime().isNull()) {
+            qzni = std::make_unique<QuaZipNewInfo>(origDirectory.relativeFilePath(dir)
+                                                       + QLatin1String("/"),
+                                                   dir);
+        } else {
+            qzni = std::make_unique<QuaZipNewInfo>(origDirectory.relativeFilePath(dir)
+                                                       + QLatin1String("/"),
+                                                   dir,
+                                                   options.getDateTime());
+        }
+        if (!dirZipFile.open(QIODevice::WriteOnly, *qzni, nullptr, 0, 0)) {
+            return false;
+        }
+        dirZipFile.close();
+    }
+
+    // For each subfolder
+    QFileInfoList subfiles = directory.entryInfoList(QDir::AllDirs | QDir::NoDotAndDotDot
+                                                     | QDir::Hidden | QDir::Dirs);
+    for (const auto &file : std::as_const(subfiles)) {
+        if (!compressSubDir(
+                zip, file.absoluteFilePath(), origDir, options, total, progress, callback)) {
+            return false;
+        }
+    }
+
+    // For each file in directory
+    QFileInfoList files = directory.entryInfoList(QDir::Hidden | QDir::Files);
+    for (const auto &file : std::as_const(files)) {
+        // If it's not a file or it's the compressed file being created
+        if (!file.isFile() || file.absoluteFilePath() == zip->getZipName())
+            continue;
+
+        // Create relative name for the compressed file
+        QString filename = origDirectory.relativeFilePath(file.absoluteFilePath());
+
+        // Compress the file
+        if (!compressFile(zip, file.absoluteFilePath(), filename, options, total, progress, callback)) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+bool compressFile(QuaZip *zip,
+                  QString fileName,
+                  QString fileDest,
+                  const Options &options,
+                  std::size_t total,
+                  std::size_t &progress,
+                  QtCommon::QtProgressCallback callback)
+{
+    // zip: object where to add the file
+    // fileName: real file name
+    // fileDest: file name inside the zip object
+
+    if (!zip)
+        return false;
+    if (zip->getMode() != QuaZip::mdCreate && zip->getMode() != QuaZip::mdAppend
+        && zip->getMode() != QuaZip::mdAdd)
+        return false;
+
+    QuaZipFile outFile(zip);
+    if (options.getDateTime().isNull()) {
+        if (!outFile.open(QIODevice::WriteOnly,
+                          QuaZipNewInfo(fileDest, fileName),
+                          nullptr,
+                          0,
+                          options.getCompressionMethod(),
+                          options.getCompressionLevel()))
+            return false;
+    } else {
+        if (!outFile.open(QIODevice::WriteOnly,
+                          QuaZipNewInfo(fileDest, fileName, options.getDateTime()),
+                          nullptr,
+                          0,
+                          options.getCompressionMethod(),
+                          options.getCompressionLevel()))
+            return false;
+    }
+
+    QFileInfo input(fileName);
+    if (quazip_is_symlink(input)) {
+        // Not sure if we should use any specialized codecs here.
+        // After all, a symlink IS just a byte array. And
+        // this is mostly for Linux, where UTF-8 is ubiquitous these days.
+        QString path = quazip_symlink_target(input);
+        QString relativePath = input.dir().relativeFilePath(path);
+        outFile.write(QFile::encodeName(relativePath));
+    } else {
+        QFile inFile;
+        inFile.setFileName(fileName);
+        if (!inFile.open(QIODevice::ReadOnly)) {
+            return false;
+        }
+        if (!copyData(inFile, outFile, total, progress, callback) || outFile.getZipError() != UNZ_OK) {
+            return false;
+        }
+        inFile.close();
+    }
+
+    outFile.close();
+    return outFile.getZipError() == UNZ_OK;
+}
+
+bool copyData(QIODevice &inFile,
+              QIODevice &outFile,
+              std::size_t total,
+              std::size_t &progress,
+              QtProgressCallback callback)
+{
+    while (!inFile.atEnd()) {
+        char buf[4096];
+        qint64 readLen = inFile.read(buf, 4096);
+        if (readLen <= 0)
+            return false;
+        if (outFile.write(buf, readLen) != readLen)
+            return false;
+
+        progress += readLen;
+        if (!callback(total, progress)) {
+            return false;
+        }
+    }
+    return true;
+}
+
+QStringList extractDir(QString fileCompressed, QString dir, QtCommon::QtProgressCallback callback)
+{
+    // Open zip
+    QuaZip zip(fileCompressed);
+    return extractDir(zip, dir, callback);
+}
+
+QStringList extractDir(QuaZip &zip, const QString &dir, QtCommon::QtProgressCallback callback)
+{
+    if (!zip.open(QuaZip::mdUnzip)) {
+        return QStringList();
+    }
+    QString cleanDir = QDir::cleanPath(dir);
+    QDir directory(cleanDir);
+    QString absCleanDir = directory.absolutePath();
+    if (!absCleanDir.endsWith(QLatin1Char('/'))) // It only ends with / if it's the FS root.
+        absCleanDir += QLatin1Char('/');
+    QStringList extracted;
+    if (!zip.goToFirstFile()) {
+        return QStringList();
+    }
+
+    std::size_t total = 0;
+    for (const QuaZipFileInfo64 &info : zip.getFileInfoList64()) {
+        total += info.uncompressedSize;
+    }
+
+    std::size_t progress = 0;
+    callback(total, progress);
+
+    do {
+        QString name = zip.getCurrentFileName();
+        QString absFilePath = directory.absoluteFilePath(name);
+        QString absCleanPath = QDir::cleanPath(absFilePath);
+        if (!absCleanPath.startsWith(absCleanDir))
+            continue;
+        if (!extractFile(&zip, QLatin1String(""), absFilePath, total, progress, callback)) {
+            removeFile(extracted);
+            return QStringList();
+        }
+        extracted.append(absFilePath);
+    } while (zip.goToNextFile());
+
+    // Close zip
+    zip.close();
+    if (zip.getZipError() != 0) {
+        removeFile(extracted);
+        return QStringList();
+    }
+
+    return extracted;
+}
+
+bool extractFile(QuaZip *zip,
+                 QString fileName,
+                 QString fileDest,
+                 std::size_t total,
+                 std::size_t &progress,
+                 QtCommon::QtProgressCallback callback)
+{
+    // zip: object where to add the file
+    // filename: real file name
+    // fileincompress: file name of the compressed file
+
+    if (!zip)
+        return false;
+    if (zip->getMode() != QuaZip::mdUnzip)
+        return false;
+
+    if (!fileName.isEmpty())
+        zip->setCurrentFile(fileName);
+    QuaZipFile inFile(zip);
+    if (!inFile.open(QIODevice::ReadOnly) || inFile.getZipError() != UNZ_OK)
+        return false;
+
+    // Check existence of resulting file
+    QDir curDir;
+    if (fileDest.endsWith(QLatin1String("/"))) {
+        if (!curDir.mkpath(fileDest)) {
+            return false;
+        }
+    } else {
+        if (!curDir.mkpath(QFileInfo(fileDest).absolutePath())) {
+            return false;
+        }
+    }
+
+    QuaZipFileInfo64 info;
+    if (!zip->getCurrentFileInfo(&info))
+        return false;
+
+    QFile::Permissions srcPerm = info.getPermissions();
+    if (fileDest.endsWith(QLatin1String("/")) && QFileInfo(fileDest).isDir()) {
+        if (srcPerm != 0) {
+            QFile(fileDest).setPermissions(srcPerm);
+        }
+        return true;
+    }
+
+    if (info.isSymbolicLink()) {
+        QString target = QFile::decodeName(inFile.readAll());
+        return QFile::link(target, fileDest);
+    }
+
+    // Open resulting file
+    QFile outFile;
+    outFile.setFileName(fileDest);
+    if (!outFile.open(QIODevice::WriteOnly))
+        return false;
+
+    // Copy data
+    if (!copyData(inFile, outFile, total, progress, callback) || inFile.getZipError() != UNZ_OK) {
+        outFile.close();
+        removeFile(QStringList(fileDest));
+        return false;
+    }
+    outFile.close();
+
+    // Close file
+    inFile.close();
+    if (inFile.getZipError() != UNZ_OK) {
+        removeFile(QStringList(fileDest));
+        return false;
+    }
+
+    if (srcPerm != 0) {
+        outFile.setPermissions(srcPerm);
+    }
+    return true;
+}
+
+bool removeFile(QStringList listFile)
+{
+    bool ret = true;
+    // For each file
+    for (int i = 0; i < listFile.count(); i++) {
+        // Remove
+        ret = ret && QFile::remove(listFile.at(i));
+    }
+    return ret;
+}
+
+} // namespace QtCommon::Compress

src/qt_common/util/compress.h

@@ -0,0 +1,144 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <QDir>
+#include <QString>
+#include "qt_common/qt_common.h"
+#include <quazip.h>
+#include <zlib.h>
+
+/** This is a modified version of JlCompress **/
+namespace QtCommon::Compress {
+
+class Options {
+public:
+    /**
+         * The enum values refer to the comments in the open function of the quazipfile.h file.
+         *
+         * The value is represented by two hexadecimal characters,
+         * the left character indicating the compression method,
+         * and the right character indicating the compression level.
+         *
+         * method == 0 indicates that the file is not compressed but rather stored as is.
+         * method == 8(Z_DEFLATED) indicates that zlib compression is used.
+         *
+         * A higher value of level indicates a smaller size of the compressed file,
+         * although it also implies more time consumed during the compression process.
+         */
+    enum CompressionStrategy
+    {
+        /// Storage without compression
+        Storage  = 0x00, // Z_NO_COMPRESSION 0
+        /// The fastest compression speed
+        Fastest  = 0x81, // Z_BEST_SPEED 1
+        /// Relatively fast compression speed
+        Faster   = 0x83,
+        /// Standard compression speed and ratio
+        Standard = 0x86,
+        /// Better compression ratio
+        Better   = 0x87,
+        /// The best compression ratio
+        Best     = 0x89, // Z_BEST_COMPRESSION 9
+        /// The default compression strategy, according to the open function of quazipfile.h,
+        /// the value of method is Z_DEFLATED, and the value of level is Z_DEFAULT_COMPRESSION -1 (equals lvl 6)
+        Default  = 0xff
+    };
+
+public:
+    explicit Options(const CompressionStrategy& strategy)
+        : m_compressionStrategy(strategy) {}
+
+    explicit Options(const QDateTime& dateTime = QDateTime(), const CompressionStrategy& strategy = Default)
+        : m_dateTime(dateTime), m_compressionStrategy(strategy) {}
+
+    QDateTime getDateTime() const {
+        return m_dateTime;
+    }
+
+    void setDateTime(const QDateTime &dateTime) {
+        m_dateTime = dateTime;
+    }
+
+    CompressionStrategy getCompressionStrategy() const {
+        return m_compressionStrategy;
+    }
+
+    int getCompressionMethod() const {
+        return m_compressionStrategy != Default ? m_compressionStrategy >> 4 : Z_DEFLATED;
+    }
+
+    int getCompressionLevel() const {
+        return m_compressionStrategy != Default ? m_compressionStrategy & 0x0f : Z_DEFAULT_COMPRESSION;
+    }
+
+    void setCompressionStrategy(const CompressionStrategy &strategy) {
+        m_compressionStrategy = strategy;
+    }
+
+private:
+    // If set, used as last modified on file inside the archive.
+    // If compressing a directory, used for all files.
+    QDateTime m_dateTime;
+    CompressionStrategy m_compressionStrategy;
+};
+
+/**
+ * @brief Compress an entire directory and report its progress.
+ * @param fileCompressed Destination file
+ * @param dir            The directory to compress
+ * @param options        Compression level, etc
+ * @param callback       Callback that takes in two std::size_t (total, progress) and returns false if the current operation should be cancelled.
+ */
+bool compressDir(QString fileCompressed,
+                 QString dir,
+                 const Options& options = Options(),
+                 QtCommon::QtProgressCallback callback = {});
+
+// Internal //
+bool compressSubDir(QuaZip *zip,
+                    QString dir,
+                    QString origDir,
+                    const Options &options,
+                    std::size_t total,
+                    std::size_t &progress,
+                    QtCommon::QtProgressCallback callback);
+
+bool compressFile(QuaZip *zip,
+                  QString fileName,
+                  QString fileDest,
+                  const Options &options,
+                  std::size_t total,
+                  std::size_t &progress,
+                  QtCommon::QtProgressCallback callback);
+
+bool copyData(QIODevice &inFile,
+              QIODevice &outFile,
+              std::size_t total,
+              std::size_t &progress,
+              QtCommon::QtProgressCallback callback);
+
+// Extract //
+
+/**
+ * @brief Extract a zip file and report its progress.
+ * @param fileCompressed Compressed file
+ * @param dir            The directory to push the results to
+ * @param callback       Callback that takes in two std::size_t (total, progress) and returns false if the current operation should be cancelled.
+ */
+QStringList extractDir(QString fileCompressed, QString dir, QtCommon::QtProgressCallback callback = {});
+
+// Internal //
+QStringList extractDir(QuaZip &zip, const QString &dir, QtCommon::QtProgressCallback callback);
+
+bool extractFile(QuaZip *zip,
+                 QString fileName,
+                 QString fileDest,
+                 std::size_t total,
+                 std::size_t &progress,
+                 QtCommon::QtProgressCallback callback);
+
+bool removeFile(QStringList listFile);
+
+}

src/qt_common/util/content.cpp

@@ -1,17 +1,24 @@
 // SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#include "qt_common/qt_game_util.h"
-#include "qt_content_util.h"
+#include "qt_common/util/content.h"
+#include "qt_common/util/game.h"
+
 #include "common/fs/fs.h"
 #include "core/hle/service/acc/profile_manager.h"
 #include "frontend_common/content_manager.h"
+#include "frontend_common/data_manager.h"
 #include "frontend_common/firmware_manager.h"
-#include "qt_common/qt_common.h"
-#include "qt_common/qt_progress_dialog.h"
-#include "qt_frontend_util.h"
 
+#include "qt_common/qt_common.h"
+#include "compress.h"
+#include "qt_common/abstract/qt_progress_dialog.h"
+#include "qt_common/abstract/qt_frontend_util.h"
+
+#include <QFuture>
+#include <QtConcurrentRun>
 #include <JlCompress.h>
+#include <QFutureWatcher>
 
 namespace QtCommon::Content {
 
@@ -21,10 +28,10 @@ bool CheckGameFirmware(u64 program_id, QObject* parent)
         && !FirmwareManager::CheckFirmwarePresence(*system)) {
         auto result = QtCommon::Frontend::ShowMessage(
             QMessageBox::Warning,
-            "Game Requires Firmware",
-            "The game you are trying to launch requires firmware to boot or to get past the "
-            "opening menu. Please <a href='https://yuzu-mirror.github.io/help/quickstart'>"
-            "dump and install firmware</a>, or press \"OK\" to launch anyways.",
+            tr("Game Requires Firmware"),
+            tr("The game you are trying to launch requires firmware to boot or to get past the "
+               "opening menu. Please <a href='https://yuzu-mirror.github.io/help/quickstart'>"
+               "dump and install firmware</a>, or press \"OK\" to launch anyways."),
             QMessageBox::Ok | QMessageBox::Cancel,
             parent);
 
@@ -60,8 +67,8 @@ void InstallFirmware(const QString& location, bool recursive)
 
     const auto ShowMessage = [&]() {
         QtCommon::Frontend::ShowMessage(icon,
-                                        failedTitle,
-                                        GetFirmwareInstallResultString(result));
+                                        tr(failedTitle),
+                                        tr(GetFirmwareInstallResultString(result)));
     };
 
     LOG_INFO(Frontend, "Installing firmware from {}", location.toStdString());
@@ -125,8 +132,8 @@ void InstallFirmware(const QString& location, bool recursive)
         i++;
         auto firmware_src_vfile = vfs->OpenFile(firmware_src_path.generic_string(),
                                                 FileSys::OpenMode::Read);
-        auto firmware_dst_vfile = firmware_vdir
-                                      ->CreateFileRelative(firmware_src_path.filename().string());
+        auto firmware_dst_vfile = firmware_vdir->CreateFileRelative(
+            firmware_src_path.filename().string());
 
         if (!VfsRawCopy(firmware_src_vfile, firmware_dst_vfile)) {
             LOG_ERROR(Frontend,
@@ -168,9 +175,9 @@ void InstallFirmware(const QString& location, bool recursive)
         const auto failed_names = QString::fromStdString(
             fmt::format("{}", fmt::join(results, "\n")));
         progress.close();
-        QtCommon::Frontend::Critical(tr("Firmware integrity verification failed!"),
-                                     tr("Verification failed for the following files:\n\n%1")
-                                         .arg(failed_names));
+        QtCommon::Frontend::Critical(
+            tr("Firmware integrity verification failed!"),
+            tr("Verification failed for the following files:\n\n%1").arg(failed_names));
         return;
     }
 
@@ -181,10 +188,10 @@ void InstallFirmware(const QString& location, bool recursive)
     const std::string display_version(firmware_data.display_version.data());
 
     result = FirmwareInstallResult::Success;
-    QtCommon::Frontend::Information(rootObject,
-                                    tr(successTitle),
-                                    tr(GetFirmwareInstallResultString(result))
-                                        .arg(QString::fromStdString(display_version)));
+    QtCommon::Frontend::Information(
+        rootObject,
+        tr(successTitle),
+        tr(GetFirmwareInstallResultString(result)).arg(QString::fromStdString(display_version)));
 }
 
 QString UnzipFirmwareToTmp(const QString& location)
@@ -193,7 +200,7 @@ QString UnzipFirmwareToTmp(const QString& location)
     fs::path tmp{fs::temp_directory_path()};
 
     if (!fs::create_directories(tmp / "eden" / "firmware")) {
-        return "";
+        return QString();
     }
 
     tmp /= "eden";
@@ -203,9 +210,10 @@ QString UnzipFirmwareToTmp(const QString& location)
 
     QFile zip(location);
 
+    // TODO(crueter): use QtCompress
     QStringList result = JlCompress::extractDir(&zip, qCacheDir);
     if (result.isEmpty()) {
-        return "";
+        return QString();
     }
 
     return qCacheDir;
@@ -264,9 +272,8 @@ void InstallKeys()
         return;
     }
 
-    FirmwareManager::KeyInstallResult result = FirmwareManager::InstallKeys(key_source_location
-                                                                                .toStdString(),
-                                                                            "keys");
+    FirmwareManager::KeyInstallResult result
+        = FirmwareManager::InstallKeys(key_source_location.toStdString(), "keys");
 
     system->GetFileSystemController().CreateFactories(*QtCommon::vfs);
 
@@ -282,9 +289,14 @@ void InstallKeys()
     }
 }
 
-void VerifyInstalledContents() {
+void VerifyInstalledContents()
+{
     // Initialize a progress dialog.
-    QtCommon::Frontend::QtProgressDialog progress(tr("Verifying integrity..."), tr("Cancel"), 0, 100, QtCommon::rootObject);
+    QtCommon::Frontend::QtProgressDialog progress(tr("Verifying integrity..."),
+                                                  tr("Cancel"),
+                                                  0,
+                                                  100,
+                                                  QtCommon::rootObject);
     progress.setWindowModality(Qt::WindowModal);
     progress.setMinimumDuration(100);
     progress.setAutoClose(false);
@@ -296,16 +308,17 @@ void VerifyInstalledContents() {
         return progress.wasCanceled();
     };
 
-    const std::vector<std::string> result =
-        ContentManager::VerifyInstalledContents(*QtCommon::system, *QtCommon::provider, QtProgressCallback);
+    const std::vector<std::string> result
+        = ContentManager::VerifyInstalledContents(*QtCommon::system,
+                                                  *QtCommon::provider,
+                                                  QtProgressCallback);
     progress.close();
 
     if (result.empty()) {
         QtCommon::Frontend::Information(tr("Integrity verification succeeded!"),
                                         tr("The operation completed successfully."));
     } else {
-        const auto failed_names =
-            QString::fromStdString(fmt::format("{}", fmt::join(result, "\n")));
+        const auto failed_names = QString::fromStdString(fmt::format("{}", fmt::join(result, "\n")));
         QtCommon::Frontend::Critical(
             tr("Integrity verification failed!"),
             tr("Verification failed for the following files:\n\n%1").arg(failed_names));
@@ -332,7 +345,7 @@ void FixProfiles()
     qorphaned.reserve(8 * 33);
 
     for (const std::string& s : orphaned) {
-        qorphaned += "\n" + QString::fromStdString(s);
+        qorphaned = qorphaned % QStringLiteral("\n") % QString::fromStdString(s);
     }
 
     QtCommon::Frontend::Critical(
@@ -348,4 +361,184 @@ void FixProfiles()
     QtCommon::Game::OpenSaveFolder();
 }
 
+void ClearDataDir(FrontendCommon::DataManager::DataDir dir, const std::string& user_id)
+{
+    auto result = QtCommon::Frontend::Warning(tr("Really clear data?"),
+                                              tr("Important data may be lost!"),
+                                              QMessageBox::Yes | QMessageBox::No);
+
+    if (result != QMessageBox::Yes)
+        return;
+
+    result = QtCommon::Frontend::Warning(
+        tr("Are you REALLY sure?"),
+        tr("Once deleted, your data will NOT come back!\n"
+           "Only do this if you're 100% sure you want to delete this data."),
+        QMessageBox::Yes | QMessageBox::No);
+
+    if (result != QMessageBox::Yes)
+        return;
+
+    QtCommon::Frontend::QtProgressDialog dialog(tr("Clearing..."), QString(), 0, 0);
+    dialog.show();
+
+    FrontendCommon::DataManager::ClearDir(dir, user_id);
+
+    dialog.close();
+}
+
+void ExportDataDir(FrontendCommon::DataManager::DataDir data_dir,
+                   const std::string& user_id,
+                   const QString& name,
+                   std::function<void()> callback)
+{
+    using namespace QtCommon::Frontend;
+    const std::string dir = FrontendCommon::DataManager::GetDataDir(data_dir, user_id);
+
+    const QString zip_dump_location = GetSaveFileName(tr("Select Export Location"),
+                                                      tr("%1.zip").arg(name),
+                                                      tr("Zipped Archives (*.zip)"));
+
+    if (zip_dump_location.isEmpty())
+        return;
+
+    QtProgressDialog* progress = new QtProgressDialog(
+        tr("Exporting data. This may take a while..."), tr("Cancel"), 0, 100, rootObject);
+
+    progress->setWindowTitle(tr("Exporting"));
+    progress->setWindowModality(Qt::WindowModal);
+    progress->setMinimumDuration(100);
+    progress->setAutoClose(false);
+    progress->setAutoReset(false);
+    progress->show();
+
+    QGuiApplication::processEvents();
+
+    auto progress_callback = [=](size_t total_size, size_t processed_size) {
+        QMetaObject::invokeMethod(progress,
+                                  &QtProgressDialog::setValue,
+                                  static_cast<int>((processed_size * 100) / total_size));
+
+        return !progress->wasCanceled();
+    };
+
+    QFuture<bool> future = QtConcurrent::run([=]() {
+        return QtCommon::Compress::compressDir(zip_dump_location,
+                                               QString::fromStdString(dir),
+                                               QtCommon::Compress::Options(),
+                                               progress_callback);
+    });
+
+    QFutureWatcher<bool>* watcher = new QFutureWatcher<bool>(rootObject);
+
+    QObject::connect(watcher, &QFutureWatcher<bool>::finished, rootObject, [=]() {
+        progress->close();
+
+        if (watcher->result()) {
+            Information(tr("Exported Successfully"), tr("Data was exported successfully."));
+        } else if (progress->wasCanceled()) {
+            Information(tr("Export Cancelled"), tr("Export was cancelled by the user."));
+        } else {
+            Critical(
+                tr("Export Failed"),
+                tr("Ensure you have write permissions on the targeted directory and try again."));
+        }
+
+        progress->deleteLater();
+        watcher->deleteLater();
+        if (callback)
+            callback();
+    });
+
+    watcher->setFuture(future);
+}
+
+void ImportDataDir(FrontendCommon::DataManager::DataDir data_dir,
+                   const std::string& user_id,
+                   std::function<void()> callback)
+{
+    const std::string dir = FrontendCommon::DataManager::GetDataDir(data_dir, user_id);
+
+    using namespace QtCommon::Frontend;
+
+    const QString zip_dump_location = GetOpenFileName(tr("Select Import Location"),
+                                                      {},
+                                                      tr("Zipped Archives (*.zip)"));
+
+    if (zip_dump_location.isEmpty())
+        return;
+
+    StandardButton button = Warning(
+        tr("Import Warning"),
+        tr("All previous data in this directory will be deleted. Are you sure you wish to "
+           "proceed?"),
+        StandardButton::Yes | StandardButton::No);
+
+    if (button != QMessageBox::Yes)
+        return;
+
+    QtProgressDialog* progress = new QtProgressDialog(
+        tr("Importing data. This may take a while..."), tr("Cancel"), 0, 100, rootObject);
+
+    progress->setWindowTitle(tr("Importing"));
+    progress->setWindowModality(Qt::WindowModal);
+    progress->setMinimumDuration(100);
+    progress->setAutoClose(false);
+    progress->setAutoReset(false);
+    progress->show();
+    progress->setValue(0);
+
+    QGuiApplication::processEvents();
+
+    // to prevent GUI mangling we have to run this in a thread as well
+    QFuture<bool> delete_future = QtConcurrent::run([=]() {
+        FrontendCommon::DataManager::ClearDir(data_dir, user_id);
+        return !progress->wasCanceled();
+    });
+
+    QFutureWatcher<bool>* delete_watcher = new QFutureWatcher<bool>(rootObject);
+    delete_watcher->setFuture(delete_future);
+
+    QObject::connect(delete_watcher, &QFutureWatcher<bool>::finished, rootObject, [=]() {
+        auto progress_callback = [=](size_t total_size, size_t processed_size) {
+            QMetaObject::invokeMethod(progress,
+                                      &QtProgressDialog::setValue,
+                                      static_cast<int>((processed_size * 100) / total_size));
+
+            return !progress->wasCanceled();
+        };
+
+        QFuture<bool> future = QtConcurrent::run([=]() {
+            return !QtCommon::Compress::extractDir(zip_dump_location,
+                                                   QString::fromStdString(dir),
+                                                   progress_callback)
+                        .empty();
+        });
+
+        QFutureWatcher<bool>* watcher = new QFutureWatcher<bool>(rootObject);
+
+        QObject::connect(watcher, &QFutureWatcher<bool>::finished, rootObject, [=]() {
+            progress->close();
+
+            // this sucks
+            if (watcher->result()) {
+                Information(tr("Imported Successfully"), tr("Data was imported successfully."));
+            } else if (progress->wasCanceled()) {
+                Information(tr("Import Cancelled"), tr("Import was cancelled by the user."));
+            } else {
+                Critical(tr("Import Failed"),
+                         tr("Ensure you have read permissions on the targeted directory and try "
+                            "again."));
+            }
+
+            progress->deleteLater();
+            watcher->deleteLater();
+            if (callback)
+                callback();
+        });
+
+        watcher->setFuture(future);
+    });
+}
+
 } // namespace QtCommon::Content

src/qt_common/util/content.h

@@ -6,6 +6,7 @@
 
 #include <QObject>
 #include "common/common_types.h"
+#include "frontend_common/data_manager.h"
 
 namespace QtCommon::Content {
 
@@ -46,6 +47,13 @@ void InstallKeys();
 void VerifyGameContents(const std::string &game_path);
 void VerifyInstalledContents();
 
+void ClearDataDir(FrontendCommon::DataManager::DataDir dir, const std::string &user_id = "");
+void ExportDataDir(FrontendCommon::DataManager::DataDir dir,
+                   const std::string &user_id = "",
+                   const QString &name = QStringLiteral("export"),
+                   std::function<void()> callback = {});
+void ImportDataDir(FrontendCommon::DataManager::DataDir dir, const std::string &user_id = "", std::function<void()> callback = {});
+
 // Profiles //
 void FixProfiles();
 }

src/qt_common/util/game.cpp

@@ -1,15 +1,16 @@
 // SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#include "qt_game_util.h"
+#include "qt_common/util/game.h"
+
 #include "common/fs/fs.h"
 #include "common/fs/path_util.h"
 #include "core/file_sys/savedata_factory.h"
 #include "core/hle/service/am/am_types.h"
 #include "frontend_common/content_manager.h"
-#include "qt_common.h"
-#include "qt_common/uisettings.h"
-#include "qt_frontend_util.h"
+#include "qt_common/qt_common.h"
+#include "qt_common/config/uisettings.h"
+#include "qt_common/abstract/qt_frontend_util.h"
 #include "yuzu/util/util.h"
 
 #include <QDesktopServices>
@@ -220,8 +221,8 @@ void RemoveBaseContent(u64 program_id, InstalledEntryType type)
                                                        program_id);
     if (res) {
         QtCommon::Frontend::Information(rootObject,
-                                        "Successfully Removed",
-                                        "Successfully removed the installed base game.");
+                                        tr("Successfully Removed"),
+                                        tr("Successfully removed the installed base game."));
     } else {
         QtCommon::Frontend::Warning(
             rootObject,
@@ -235,8 +236,8 @@ void RemoveUpdateContent(u64 program_id, InstalledEntryType type)
     const auto res = ContentManager::RemoveUpdate(system->GetFileSystemController(), program_id);
     if (res) {
         QtCommon::Frontend::Information(rootObject,
-                                        "Successfully Removed",
-                                        "Successfully removed the installed update.");
+                                        tr("Successfully Removed"),
+                                        tr("Successfully removed the installed update."));
     } else {
         QtCommon::Frontend::Warning(rootObject,
                                     GetGameListErrorRemoving(type),

src/qt_common/util/meta.cpp

@@ -1,7 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#include "qt_meta.h"
+#include "qt_common/util/meta.h"
 #include "common/common_types.h"
 #include "core/core.h"
 #include "core/frontend/applets/cabinet.h"

src/qt_common/util/path.cpp

@@ -1,13 +1,13 @@
 // SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#include "qt_path_util.h"
+#include "qt_common/util/path.h"
 #include <QDesktopServices>
 #include <QString>
 #include <QUrl>
 #include "common/fs/fs.h"
 #include "common/fs/path_util.h"
-#include "qt_common/qt_frontend_util.h"
+#include "qt_common/abstract/qt_frontend_util.h"
 #include <fmt/format.h>
 
 namespace QtCommon::Path {
@@ -17,7 +17,12 @@ bool OpenShaderCache(u64 program_id, QObject *parent)
     const auto shader_cache_dir = Common::FS::GetEdenPath(Common::FS::EdenPath::ShaderDir);
     const auto shader_cache_folder_path{shader_cache_dir / fmt::format("{:016x}", program_id)};
     if (!Common::FS::CreateDirs(shader_cache_folder_path)) {
-        QtCommon::Frontend::ShowMessage(QMessageBox::Warning, "Error Opening Shader Cache", "Failed to create or open shader cache for this title, ensure your app data directory has write permissions.", QMessageBox::Ok, parent);
+        QtCommon::Frontend::ShowMessage(QMessageBox::Warning,
+                                        tr("Error Opening Shader Cache"),
+                                        tr("Failed to create or open shader cache for this title, "
+                                        "ensure your app data directory has write permissions."),
+                                        QMessageBox::Ok,
+                                        parent);
     }
 
     const auto shader_path_string{Common::FS::PathToUTF8String(shader_cache_folder_path)};

src/qt_common/util/rom.cpp

@@ -1,7 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#include "qt_rom_util.h"
+#include "qt_common/util/rom.h"
 
 #include <QCoreApplication>
 

src/video_core/buffer_cache/buffer_cache.h

@@ -386,11 +386,9 @@ void BufferCache<P>::BindHostComputeBuffers() {
 template <class P>
 void BufferCache<P>::SetUniformBuffersState(const std::array<u32, NUM_STAGES>& mask,
                                             const UniformBufferSizes* sizes) {
-    if constexpr (HAS_PERSISTENT_UNIFORM_BUFFER_BINDINGS) {
-        if (channel_state->enabled_uniform_buffer_masks != mask) {
-            if constexpr (IS_OPENGL) {
-                channel_state->fast_bound_uniform_buffers.fill(0);
-            }
+    if (channel_state->enabled_uniform_buffer_masks != mask) {
+        channel_state->fast_bound_uniform_buffers.fill(0);
+        if constexpr (HAS_PERSISTENT_UNIFORM_BUFFER_BINDINGS) {
             channel_state->dirty_uniform_buffers.fill(~u32{0});
             channel_state->uniform_buffer_binding_sizes.fill({});
         }
@@ -806,7 +804,7 @@ void BufferCache<P>::BindHostGraphicsUniformBuffer(size_t stage, u32 index, u32
                     channel_state->uniform_buffer_binding_sizes[stage][binding_index] != size;
                 if (should_fast_bind) {
                     // We only have to bind when the currently bound buffer is not the fast version
-                    channel_state->fast_bound_uniform_buffers[stage] |= 1U << binding_index;
+                    channel_state->fast_bound_uniform_buffers[stage] |= 1u << binding_index;
                     channel_state->uniform_buffer_binding_sizes[stage][binding_index] = size;
                     runtime.BindFastUniformBuffer(stage, binding_index, size);
                 }
@@ -815,10 +813,8 @@ void BufferCache<P>::BindHostGraphicsUniformBuffer(size_t stage, u32 index, u32
                 return;
             }
         }
-        if constexpr (IS_OPENGL) {
-            channel_state->fast_bound_uniform_buffers[stage] |= 1U << binding_index;
-            channel_state->uniform_buffer_binding_sizes[stage][binding_index] = size;
-        }
+        channel_state->fast_bound_uniform_buffers[stage] |= 1u << binding_index;
+        channel_state->uniform_buffer_binding_sizes[stage][binding_index] = size;
         // Stream buffer path to avoid stalling on non-Nvidia drivers or Vulkan
         const std::span<u8> span = runtime.BindMappedUniformBuffer(stage, binding_index, size);
         device_memory.ReadBlockUnsafe(device_addr, span.data(), size);
@@ -839,9 +835,6 @@ void BufferCache<P>::BindHostGraphicsUniformBuffer(size_t stage, u32 index, u32
     }
     const u32 offset = buffer.Offset(device_addr);
     if constexpr (IS_OPENGL) {
-        // Fast buffer will be unbound
-        channel_state->fast_bound_uniform_buffers[stage] &= ~(1U << binding_index);
-
         // Mark the index as dirty if offset doesn't match
         const bool is_copy_bind = offset != 0 && !runtime.SupportsNonZeroUniformOffset();
         channel_state->dirty_uniform_buffers[stage] |= (is_copy_bind ? 1U : 0U) << index;
@@ -855,6 +848,7 @@ void BufferCache<P>::BindHostGraphicsUniformBuffer(size_t stage, u32 index, u32
     } else {
         runtime.BindUniformBuffer(buffer, offset, size);
     }
+    channel_state->fast_bound_uniform_buffers[stage] &= ~(1u << binding_index);
 }
 
 template <class P>
@@ -1789,12 +1783,7 @@ std::span<u8> BufferCache<P>::ImmediateBuffer(size_t wanted_capacity) {
 
 template <class P>
 bool BufferCache<P>::HasFastUniformBufferBound(size_t stage, u32 binding_index) const noexcept {
-    if constexpr (IS_OPENGL) {
-        return ((channel_state->fast_bound_uniform_buffers[stage] >> binding_index) & 1) != 0;
-    } else {
-        // Only OpenGL has fast uniform buffers
-        return false;
-    }
+    return ((channel_state->fast_bound_uniform_buffers[stage] >> binding_index) & 1u) != 0;
 }
 
 template <class P>