[core, *] support bundled application program IDs

[service, nvhost] added machinery to allow microsleep between nvdec read requests to avoid guest panic in some games (#4316 )
- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions). - [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md) - [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability. ------------------- This one deserves a long story, but imma try to resume: During investigating Absolum 1.2 black screen of death upon loading intro video, i've discovered guest was aborting for failing to allocate room for the video. By logging everything prior to crash and decoding guest side instructions managed to confirm its media allocator was reading data faster than it was updating free available bucket list. Since the IStorage::Read was happening 247 times before the crash, i've decided to add a very small sleep there, and boom, not only Absolum but some other titles got the same issue fixed. But i was unsatisfied with the sleep and kept tracking guest instructions upstream in order to find a sync point for the read worker and the memory allocation update. But unfortunately the media allocator helpers live in guest, accessing memory directly via MMU, so any sync signaling would need to come from some dynarmic hack. It's been 6 days now, so i've decided to polish the sleep: Moved it upstream to where i could have access for proper predicate, and added machinery to service and nvhost to support that. Now the sleep is restricted only for nvdec istorage reads. Any other reads will flow normally. TL;DR: currently our code is so blazing async that guest is capable to request reads before its very self refresh it have freed room to do so. The sleep accepted as broadly stable was 600 us (MICROseconds), and it affects ONLY nvdec chunk reading. Reports confirm that now videos are smoother now. Code was polished at my knowledge limits. Mostly machinery to track when a request comes from a process with nvdec active, and is istorage read. I can provide more details if it comes to be needed. Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4316 Reviewed-by: MaranBr <maranbr@eden-emu.dev> Reviewed-by: Samuel <lizzie@eden-emu.dev>
2026-08-29 18:08:08 +00:00 · 2026-08-29 12:39:26 -03:00 · 2026-08-29 14:22:09 +02:00
55 changed files with 1130 additions and 552 deletions
@@ -0,0 +1,28 @@
+From cc15da16e533b2a801934eab2dfeaf3c3949a1dc Mon Sep 17 00:00:00 2001
+From: crueter <crueter@eden-emu.dev>
+Date: Mon, 8 Sep 2025 12:28:55 -0400
+Subject: [PATCH] [cmake] disable NEON runtime check on clang-cl
+
+When enabling runtime NEON checking for clang-cl, the linker would error out with `undefined symbol: __emit`, since clang doesn't actually implement this instruction. Therefore it makes sense to disable the runtime check by default on this platform, until either this is fixed or a clang-cl compatible intrinsic check is added (I don't have enough knowledge of MSVC to do this)
+---
+ cmake/OpusConfig.cmake | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/cmake/OpusConfig.cmake b/cmake/OpusConfig.cmake
+index e9319fbad..d0f459e88 100644
+--- a/cmake/OpusConfig.cmake
+++ b/cmake/OpusConfig.cmake
+@@ -71,7 +71,12 @@ elseif(OPUS_CPU_ARM AND NOT OPUS_DISABLE_INTRINSICS)
+   opus_detect_neon(COMPILER_SUPPORT_NEON)
+   if(COMPILER_SUPPORT_NEON)
+     option(OPUS_USE_NEON "Option to enable NEON" ON)
+-    option(OPUS_MAY_HAVE_NEON "Does runtime check for neon support" ON)
+    if (MSVC AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+      set(NEON_RUNTIME_CHECK_DEFAULT OFF)
+    else()
+      set(NEON_RUNTIME_CHECK_DEFAULT ON)
+    endif()
+    option(OPUS_MAY_HAVE_NEON "Does runtime check for neon support" ${NEON_RUNTIME_CHECK_DEFAULT})
+     option(OPUS_PRESUME_NEON "Assume target CPU has NEON support" OFF)
+     if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
+       set(OPUS_PRESUME_NEON ON)
@@ -0,0 +1,153 @@
+From bf455b67b4eaa446ffae5d25410b141b7b1b1082 Mon Sep 17 00:00:00 2001
+From: crueter <crueter@eden-emu.dev>
+Date: Mon, 8 Sep 2025 12:08:20 -0400
+Subject: [PATCH] [cmake] `OPUS_INSTALL` option; only default install if root
+ project
+
+Signed-off-by: crueter <crueter@eden-emu.dev>
+---
+ CMakeLists.txt | 112 ++++++++++++++++++++++++++++---------------------
+ 1 file changed, 64 insertions(+), 48 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index fcf034b19..08b5e16f8 100644
+--- a/CMakeLists.txt
+++ b/CMakeLists.txt
+@@ -4,6 +4,13 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
+ include(OpusPackageVersion)
+ get_package_version(PACKAGE_VERSION PROJECT_VERSION)
+ 
+# root project detection
+if(DEFINED PROJECT_NAME)
+  set(root_project OFF)
+else()
+  set(root_project ON)
+endif()
+
+ project(Opus LANGUAGES C VERSION ${PROJECT_VERSION})
+ 
+ include(OpusFunctions)
+@@ -83,12 +90,16 @@ set(OPUS_DNN_FLOAT_DEBUG_HELP_STR "Run DNN computations as float for debugging p
+ option(OPUS_DNN_FLOAT_DEBUG ${OPUS_DNN_FLOAT_DEBUG_HELP_STR} OFF)
+ add_feature_info(OPUS_DNN_FLOAT_DEBUG OPUS_DNN_FLOAT_DEBUG ${OPUS_DNN_FLOAT_DEBUG_HELP_STR})
+ 
+set(OPUS_INSTALL_HELP_STR "Install Opus targets")
+option(OPUS_INSTALL ${OPUS_INSTALL_HELP_STR} ${root_project})
+add_feature_info(OPUS_INSTALL OPUS_INSTALL ${OPUS_INSTALL_HELP_STR})
+
+ set(OPUS_INSTALL_PKG_CONFIG_MODULE_HELP_STR "install pkg-config module.")
+-option(OPUS_INSTALL_PKG_CONFIG_MODULE ${OPUS_INSTALL_PKG_CONFIG_MODULE_HELP_STR} ON)
+option(OPUS_INSTALL_PKG_CONFIG_MODULE ${OPUS_INSTALL_PKG_CONFIG_MODULE_HELP_STR} ${OPUS_INSTALL})
+ add_feature_info(OPUS_INSTALL_PKG_CONFIG_MODULE OPUS_INSTALL_PKG_CONFIG_MODULE ${OPUS_INSTALL_PKG_CONFIG_MODULE_HELP_STR})
+ 
+ set(OPUS_INSTALL_CMAKE_CONFIG_MODULE_HELP_STR "install CMake package config module.")
+-option(OPUS_INSTALL_CMAKE_CONFIG_MODULE ${OPUS_INSTALL_CMAKE_CONFIG_MODULE_HELP_STR} ON)
+option(OPUS_INSTALL_CMAKE_CONFIG_MODULE ${OPUS_INSTALL_CMAKE_CONFIG_MODULE_HELP_STR} ${OPUS_INSTALL})
+ add_feature_info(OPUS_INSTALL_CMAKE_CONFIG_MODULE OPUS_INSTALL_CMAKE_CONFIG_MODULE ${OPUS_INSTALL_CMAKE_CONFIG_MODULE_HELP_STR})
+ 
+ set(OPUS_DRED_HELP_STR "enable DRED.")
+@@ -613,53 +624,58 @@ if(OPUS_BUILD_FRAMEWORK)
+                         OUTPUT_NAME Opus)
+ endif()
+ 
+-install(TARGETS opus
+-        EXPORT OpusTargets
+-        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+-        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+-        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+-        FRAMEWORK DESTINATION ${CMAKE_INSTALL_PREFIX}
+-        PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/opus)
+-
+-if(OPUS_INSTALL_PKG_CONFIG_MODULE)
+-  set(prefix ${CMAKE_INSTALL_PREFIX})
+-  set(exec_prefix ${CMAKE_INSTALL_PREFIX})
+-  set(libdir ${CMAKE_INSTALL_FULL_LIBDIR})
+-  set(includedir ${CMAKE_INSTALL_FULL_INCLUDEDIR})
+-  set(VERSION ${PACKAGE_VERSION})
+-  if(HAVE_LIBM)
+-    set(LIBM "-lm")
+if (OPUS_INSTALL)
+  install(TARGETS opus
+          EXPORT OpusTargets
+          ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+          LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+          RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+          FRAMEWORK DESTINATION ${CMAKE_INSTALL_PREFIX}
+          PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/opus)
+
+  if(OPUS_INSTALL_PKG_CONFIG_MODULE)
+    set(prefix ${CMAKE_INSTALL_PREFIX})
+    set(exec_prefix ${CMAKE_INSTALL_PREFIX})
+    set(libdir ${CMAKE_INSTALL_FULL_LIBDIR})
+    set(includedir ${CMAKE_INSTALL_FULL_INCLUDEDIR})
+    set(VERSION ${PACKAGE_VERSION})
+    if(HAVE_LIBM)
+      set(LIBM "-lm")
+    endif()
+    configure_file(opus.pc.in opus.pc)
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/opus.pc
+            DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+  endif()
+
+  if(OPUS_INSTALL_CMAKE_CONFIG_MODULE)
+    set(CPACK_GENERATOR TGZ)
+    include(CPack)
+    set(CMAKE_INSTALL_PACKAGEDIR ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME})
+    install(EXPORT OpusTargets
+            NAMESPACE Opus::
+            DESTINATION ${CMAKE_INSTALL_PACKAGEDIR})
+
+    include(CMakePackageConfigHelpers)
+
+    set(INCLUDE_INSTALL_DIR ${CMAKE_INSTALL_INCLUDEDIR})
+    configure_package_config_file(
+      ${PROJECT_SOURCE_DIR}/cmake/OpusConfig.cmake.in
+      OpusConfig.cmake
+      INSTALL_DESTINATION
+      ${CMAKE_INSTALL_PACKAGEDIR}
+      PATH_VARS
+      INCLUDE_INSTALL_DIR
+      INSTALL_PREFIX
+      ${CMAKE_INSTALL_PREFIX})
+
+    write_basic_package_version_file(OpusConfigVersion.cmake
+                                    VERSION ${PROJECT_VERSION}
+                                    COMPATIBILITY SameMajorVersion)
+
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/OpusConfig.cmake
+                  ${CMAKE_CURRENT_BINARY_DIR}/OpusConfigVersion.cmake
+            DESTINATION ${CMAKE_INSTALL_PACKAGEDIR})
+   endif()
+-  configure_file(opus.pc.in opus.pc)
+-  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/opus.pc
+-          DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+-endif()
+-
+-if(OPUS_INSTALL_CMAKE_CONFIG_MODULE)
+-  set(CPACK_GENERATOR TGZ)
+-  include(CPack)
+-  set(CMAKE_INSTALL_PACKAGEDIR ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME})
+-  install(EXPORT OpusTargets
+-          NAMESPACE Opus::
+-          DESTINATION ${CMAKE_INSTALL_PACKAGEDIR})
+-
+-  include(CMakePackageConfigHelpers)
+-
+-  set(INCLUDE_INSTALL_DIR ${CMAKE_INSTALL_INCLUDEDIR})
+-  configure_package_config_file(${PROJECT_SOURCE_DIR}/cmake/OpusConfig.cmake.in
+-                                OpusConfig.cmake
+-                                INSTALL_DESTINATION
+-                                ${CMAKE_INSTALL_PACKAGEDIR}
+-                                PATH_VARS
+-                                INCLUDE_INSTALL_DIR
+-                                INSTALL_PREFIX
+-                                ${CMAKE_INSTALL_PREFIX})
+-  write_basic_package_version_file(OpusConfigVersion.cmake
+-                                   VERSION ${PROJECT_VERSION}
+-                                   COMPATIBILITY SameMajorVersion)
+-  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/OpusConfig.cmake
+-                ${CMAKE_CURRENT_BINARY_DIR}/OpusConfigVersion.cmake
+-          DESTINATION ${CMAKE_INSTALL_PACKAGEDIR})
+ endif()
+ 
+ if(OPUS_BUILD_PROGRAMS)
@@ -461,6 +461,21 @@ if (NOT YUZU_STATIC_ROOM)
    if (ZLIB_ADDED)
        add_library(ZLIB::ZLIB ALIAS zlibstatic)
    endif()
+
+    # Opus
+    AddJsonPackage(opus)
+
+    if (Opus_ADDED)
+        if (MSVC AND CXX_CLANG)
+            target_compile_options(opus PRIVATE
+                $<$<COMPILE_LANGUAGE:C,CXX>:-Wno-implicit-function-declaration>
+            )
+        endif()
+    endif()
+
+    if (NOT TARGET Opus::opus)
+        add_library(Opus::opus ALIAS opus)
+    endif()
 endif()

 if(NOT TARGET Boost::headers)
@@ -0,0 +1,22 @@
+# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# SPDX-FileCopyrightText: 2022 yuzu Emulator Project
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+find_package(PkgConfig QUIET)
+pkg_search_module(OPUS QUIET IMPORTED_TARGET opus)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(Opus
+    REQUIRED_VARS OPUS_LINK_LIBRARIES
+    VERSION_VAR OPUS_VERSION
+)
+
+if (MSYS2)
+    FixMsysPath(PkgConfig::OPUS)
+endif()
+
+if (Opus_FOUND AND NOT TARGET Opus::opus)
+    add_library(Opus::opus ALIAS PkgConfig::OPUS)
+endif()
@@ -218,6 +218,21 @@
        "repo": "jimmy-park/openssl-cmake",
        "version": "3.6.2"
    },
+    "opus": {
+        "find_args": "MODULE",
+        "hash": "9506147b0de35befda8633ff272981cc2575c860874791bd455b752f797fd7dbd1079f0ba42ccdd7bb1fe6773fa5e84b3d75667c2883dd1fb2d0e4a5fa4f8387",
+        "min_version": "1.3",
+        "options": [
+            "OPUS_PRESUME_NEON ON"
+        ],
+        "package": "Opus",
+        "patches": [
+            "0001-disable-clang-runtime-neon.patch",
+            "0002-no-install.patch"
+        ],
+        "repo": "xiph/opus",
+        "version": "a3f0ec02b3"
+    },
    "quazip": {
        "hash": "609c240c7f029ac26a37d8fbab51bc16284e05e128b78b9b9c0e95d083538c36047a67d682759ac990e4adb0eeb90f04f1ea7fe2253bbda7e7e3bcce32e53dd8",
        "min_version": "1.3",
@@ -60,6 +60,7 @@ All other dependencies will be downloaded and built by [CPM](https://github.com/
 * [ZLIB](https://www.zlib.net/) 1.2+
 * [zstd](https://facebook.github.io/zstd/) 1.5+
 * [enet](http://enet.bespin.org/) 1.3+
+* [Opus](https://opus-codec.org/) 1.3+

 Vulkan 1.3.274+ is also needed:

@@ -121,7 +122,7 @@ sudo emerge -a \
    dev-libs/unordered_dense dev-libs/boost dev-libs/openssl dev-libs/discord-rpc \
    dev-util/spirv-tools dev-util/spirv-headers dev-util/vulkan-headers \
    dev-util/vulkan-utility-libraries dev-util/glslang \
-    media-gfx/renderdoc media-libs/libva media-video/ffmpeg \
+    media-gfx/renderdoc media-libs/libva media-libs/opus media-video/ffmpeg \
    media-libs/VulkanMemoryAllocator media-libs/libsdl3 media-libs/cubeb \
    net-libs/enet \
    sys-libs/zlib \
@@ -153,7 +154,7 @@ Required USE flags:
 <summary>Arch Linux</summary>

 ```sh
-sudo pacman -Syu --needed base-devel boost catch2 cmake enet ffmpeg fmt git glslang libzip lz4 ninja nlohmann-json openssl qt6-base qt6-multimedia qt6-charts sdl3 zlib zstd zip unzip vulkan-headers vulkan-utility-libraries libusb spirv-tools spirv-headers
+sudo pacman -Syu --needed base-devel boost catch2 cmake enet ffmpeg fmt git glslang libzip lz4 ninja nlohmann-json openssl opus qt6-base qt6-multimedia qt6-charts sdl3 zlib zstd zip unzip vulkan-headers vulkan-utility-libraries libusb spirv-tools spirv-headers
 ```

 * Building with QT Web Engine requires `qt6-webengine` as well.
@@ -166,7 +167,7 @@ sudo pacman -Syu --needed base-devel boost catch2 cmake enet ffmpeg fmt git glsl
 <summary>Ubuntu, Debian, Mint Linux</summary>

 ```sh
-sudo apt-get install autoconf cmake g++ gcc git glslang-tools libglu1-mesa-dev libhidapi-dev libpulse-dev libtool libudev-dev libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-render-util0 libxcb-xinerama0 libxcb-xkb1 libxext-dev libxkbcommon-x11-0 mesa-common-dev nasm ninja-build qt6-base-private-dev catch2 libfmt-dev liblz4-dev nlohmann-json3-dev libzstd-dev libssl-dev libavfilter-dev libavcodec-dev libswscale-dev pkg-config zlib1g-dev libva-dev libvdpau-dev qt6-tools-dev qt6-charts-dev libvulkan-dev spirv-tools spirv-headers libusb-1.0-0-dev libxbyak-dev libboost-dev libboost-fiber-dev libboost-context-dev libsdl3-dev libasound2t64 vulkan-utility-libraries-dev
+sudo apt-get install autoconf cmake g++ gcc git glslang-tools libglu1-mesa-dev libhidapi-dev libpulse-dev libtool libudev-dev libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-render-util0 libxcb-xinerama0 libxcb-xkb1 libxext-dev libxkbcommon-x11-0 mesa-common-dev nasm ninja-build qt6-base-private-dev catch2 libfmt-dev liblz4-dev nlohmann-json3-dev libzstd-dev libssl-dev libavfilter-dev libavcodec-dev libswscale-dev pkg-config zlib1g-dev libva-dev libvdpau-dev qt6-tools-dev qt6-charts-dev libvulkan-dev spirv-tools spirv-headers libusb-1.0-0-dev libxbyak-dev libboost-dev libboost-fiber-dev libboost-context-dev libsdl3-dev libopus-dev libasound2t64 vulkan-utility-libraries-dev
 ```

 * Ubuntu 26.04, Linux Mint 22.3, or Debian 13 or later is required.
@@ -213,7 +214,7 @@ First, enable the community repository; [see here](https://wiki.alpinelinux.org/
 # Enable the community repository
 setup-apkrepos -c
 # Install
-apk add g++ git cmake make mesa-dev qt6-qtbase-dev qt6-qtbase-private-dev libquazip1-qt6 ffmpeg-dev qt6-charts-dev libusb-dev libtool boost-dev sdl3-dev zstd-dev vulkan-utility-libraries spirv-tools-dev openssl-dev nlohmann-json lz4-dev  jq patch
+apk add g++ git cmake make mesa-dev qt6-qtbase-dev qt6-qtbase-private-dev libquazip1-qt6 ffmpeg-dev qt6-charts-dev libusb-dev libtool boost-dev sdl3-dev zstd-dev vulkan-utility-libraries spirv-tools-dev openssl-dev nlohmann-json lz4-dev opus-dev jq patch
 ```

 </details>
@@ -259,7 +260,7 @@ brew install molten-vk
 <details>
 <summary>FreeBSD</summary>

-As root run: `pkg install devel/cmake sdl3 devel/boost-libs devel/catch2 devel/libfmt devel/nlohmann-json devel/ninja devel/nasm devel/autoconf devel/pkgconf devel/qt6-base devel/qt6-charts devel/simpleini net/enet multimedia/ffnvcodec-headers multimedia/ffmpeg archivers/liblz4 lang/gcc12 graphics/glslang graphics/vulkan-utility-libraries graphics/spirv-tools www/cpp-httplib devel/unordered-dense vulkan-headers quazip-qt6`
+As root run: `pkg install devel/cmake sdl3 devel/boost-libs devel/catch2 devel/libfmt devel/nlohmann-json devel/ninja devel/nasm devel/autoconf devel/pkgconf devel/qt6-base devel/qt6-charts devel/simpleini net/enet multimedia/ffnvcodec-headers multimedia/ffmpeg audio/opus archivers/liblz4 lang/gcc12 graphics/glslang graphics/vulkan-utility-libraries graphics/spirv-tools www/cpp-httplib devel/unordered-dense vulkan-headers quazip-qt6`

 If using FreeBSD 12 or prior, use `devel/pkg-config` instead.

@@ -272,7 +273,7 @@ If using FreeBSD 12 or prior, use `devel/pkg-config` instead.
 For NetBSD +10.1:

 ```sh
-pkgin install git cmake boost fmtlib SDL3 catch2 libjwt spirv-headers spirv-tools ffmpeg7 libva nlohmann-json jq qt6 cpp-httplib lz4 vulkan-headers nasm autoconf enet pkg-config libusb1 libcxx frozen
+pkgin install git cmake boost fmtlib SDL3 catch2 libjwt spirv-headers spirv-tools ffmpeg7 libva nlohmann-json jq libopus qt6 cpp-httplib lz4 vulkan-headers nasm autoconf enet pkg-config libusb1 libcxx frozen
 ```

 [Caveats](./Caveats.md#netbsd).
@@ -303,7 +304,7 @@ pkg install gcc14 git cmake unzip nasm autoconf bash pkgconf ffmpeg glslang gmak
 <summary>OpenIndiana</summary>

 ```sh
-sudo pkg install git cmake qt6 boost glslang libzip library/lz4 libusb-1 nlohmann-json openssl sdl3 zlib compress/zstd unzip pkg-config nasm autoconf mesa library/libdrm header-drm developer/fmt
+sudo pkg install git cmake qt6 boost glslang libzip library/lz4 libusb-1 nlohmann-json openssl opus sdl3 zlib compress/zstd unzip pkg-config nasm autoconf mesa library/libdrm header-drm developer/fmt
 ```

 [Caveats](./Caveats.md#openindiana).
@@ -327,7 +328,7 @@ sudo pkgin install git cmake autoconf build-essential libusb-1 nasm gcc13

 ```sh
 BASE="git make autoconf libtool automake-wrapper jq patch"
-MINGW="qt6-base qt6-charts qt6-tools qt6-translations qt6-svg cmake toolchain clang python-pip openssl vulkan-memory-allocator vulkan-devel glslang boost fmt lz4 nlohmann-json zlib zstd enet libusb unordered_dense openssl SDL3"
+MINGW="qt6-base qt6-charts qt6-tools qt6-translations qt6-svg cmake toolchain clang python-pip openssl vulkan-memory-allocator vulkan-devel glslang boost fmt lz4 nlohmann-json zlib zstd enet opus libusb unordered_dense openssl SDL3"
 # Either x86_64 or clang-aarch64 (Windows on ARM)
 packages="$BASE"
 for pkg in $MINGW; do
@@ -353,7 +354,7 @@ pacman -Syuu --needed --noconfirm $packages
 <summary>HaikuOS</summary>

 ```sh
-pkgman install git cmake patch libfmt_devel nlohmann_json lz4_devel boost1.90_devel vulkan_devel qt6_base_devel qt6_declarative_devel libsdl3_devel ffmpeg7_devel libx11_devel enet_devel catch2_devel quazip1_qt5_devel qt6_5compat_devel glslang qt6_devel qt6_charts_devel cubeb_devel simpleini quazip_qt6_devel
+pkgman install git cmake patch libfmt_devel nlohmann_json lz4_devel opus_devel boost1.90_devel vulkan_devel qt6_base_devel qt6_declarative_devel libsdl3_devel ffmpeg7_devel libx11_devel enet_devel catch2_devel quazip1_qt5_devel qt6_5compat_devel glslang qt6_devel qt6_charts_devel cubeb_devel simpleini quazip_qt6_devel
 ```

 [Caveats](./Caveats.md#haikuos).
@@ -12,7 +12,7 @@ pkgs.mkShellNoCC {
    git cmake clang gnumake patch jq pkg-config
    # libraries
    openssl boost fmt nlohmann_json lz4 zlib zstd
-    enet vulkan-headers vulkan-utility-libraries
+    enet libopus vulkan-headers vulkan-utility-libraries
    spirv-tools spirv-headers vulkan-loader unzip
    glslang python3 httplib cpp-jwt ffmpeg-headless
    libusb1 cubeb
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 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

@@ -24,6 +27,6 @@ object SettingsFile {

    fun loadCustomConfig(game: Game) {
        val fileName = FileUtil.getFilename(Uri.parse(game.path))
-        NativeConfig.initializePerGameConfig(game.programId, fileName)
+        NativeConfig.initializePerGameConfig(game.applicationId, fileName)
    }
 }
@@ -189,7 +189,7 @@ class AddonsFragment : Fragment() {
                fragmentManager = parentFragmentManager,
                addonViewModel = addonViewModel,
                documents = documents,
-                programId = args.game.programId
+                programId = args.game.applicationId
            )
        }

@@ -347,7 +347,7 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback {
        }
        try {
            if (GpuDriverHelper.isAdrenoGpu()) {
-                val programIdHex = game!!.programIdHex
+                val programIdHex = game!!.applicationIdHex
                if (NativeFreedrenoConfig.loadPerGameConfigWithGlobalFallback(programIdHex)) {
                    Log.info("[EmulationFragment] Loaded per-game Freedreno config for $programIdHex")
                } else {
@@ -59,7 +59,7 @@ class FreedrenoSettingsFragment : Fragment() {
        NativeFreedrenoConfig.initializeFreedrenoConfig()

        if (isPerGameConfig) {
-            NativeFreedrenoConfig.loadPerGameConfig(game!!.programIdHex)
+            NativeFreedrenoConfig.loadPerGameConfig(game!!.applicationIdHex)
        } else {
            NativeFreedrenoConfig.reloadFreedrenoConfig()
        }
@@ -157,7 +157,7 @@ class FreedrenoSettingsFragment : Fragment() {

        binding.buttonSave.setOnClickListener {
            if (isPerGameConfig) {
-                NativeFreedrenoConfig.savePerGameConfig(game!!.programIdHex)
+                NativeFreedrenoConfig.savePerGameConfig(game!!.applicationIdHex)
                showSnackbar(getString(R.string.freedreno_per_game_saved))
            } else {
                NativeFreedrenoConfig.saveFreedrenoConfig()
@@ -455,7 +455,7 @@ class GamePropertiesFragment : Fragment() {

                val shaderCacheDir = File(
                    DirectoryInitialization.userDirectory +
-                        "/cache/shader/" + args.game.settingsName.lowercase()
+                        "/cache/shader/" + args.game.shaderCacheName.lowercase()
                )
                if (shaderCacheDir.exists()) {
                    add(
@@ -600,7 +600,7 @@ class GamePropertiesFragment : Fragment() {
                    val files = cacheSaveDir.listFiles()
                    var savesFolderFile: File? = null
                    if (files != null) {
-                        val savesFolderName = args.game.programIdHex
+                        val savesFolderName = args.game.applicationIdHex
                        for (file in files) {
                            if (file.isDirectory && file.name == savesFolderName) {
                                savesFolderFile = file
@@ -232,7 +232,7 @@ class InstallableFragment : Fragment() {
                fragmentManager = parentFragmentManager,
                addonViewModel = addonViewModel,
                documents = documents,
-                programId = addonViewModel.game?.programId
+                programId = addonViewModel.game?.applicationId
            )
        }

@@ -79,6 +79,13 @@ class LicensesFragment : Fragment() {
                R.string.license_ffmpeg_copyright,
                R.string.license_ffmpeg_text
            ),
+            License(
+                R.string.license_opus,
+                R.string.license_opus_description,
+                R.string.license_opus_link,
+                R.string.license_opus_copyright,
+                R.string.license_opus_text
+            ),
            License(
                R.string.license_sirit,
                R.string.license_sirit_description,
@@ -142,10 +142,11 @@ class AddonViewModel : ViewModel() {
    }

    fun onDeleteAddon(patch: Patch) {
+        val currentGame = game ?: return
        when (PatchType.from(patch.type)) {
-            PatchType.Update -> NativeLibrary.removeUpdate(patch.programId)
-            PatchType.DLC -> NativeLibrary.removeDLC(patch.programId)
-            PatchType.Mod -> NativeLibrary.removeMod(patch.programId, patch.name)
+            PatchType.Update -> NativeLibrary.removeUpdate(currentGame.programId)
+            PatchType.DLC -> NativeLibrary.removeDLC(currentGame.applicationId)
+            PatchType.Mod -> NativeLibrary.removeMod(currentGame.programId, patch.name)
        }
        refreshAddons(force = true)
    }
@@ -165,7 +166,7 @@ class AddonViewModel : ViewModel() {
        }

        NativeConfig.setDisabledAddons(
-            currentGame.programId,
+            currentGame.applicationId,
            currentList.mapNotNull {
                if (it.enabled) {
                    null
@@ -199,6 +200,6 @@ class AddonViewModel : ViewModel() {
    }

    private fun gameKey(game: Game): String {
-        return "${game.programId}|${game.path}"
+        return "${game.applicationId}|${game.path}"
    }
 }
@@ -150,7 +150,7 @@ class DriverViewModel : ViewModel() {
                    ?: return@withContext
                val shaderDir = File(
                    externalFilesDir.absolutePath +
-                    "/shader/" + game.settingsName.lowercase()
+                    "/shader/" + game.shaderCacheName.lowercase()
                )
                if (shaderDir.exists()) {
                    shaderDir.deleteRecursively()
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later

 // SPDX-FileCopyrightText: 2023 yuzu Emulator Project
@@ -35,19 +35,26 @@ class Game(
    val keyAddedToLibraryTime get() = "${path}_AddedToLibraryTime"
    val keyLastPlayedTime get() = "${path}_LastPlayed"

+    private val programIdLong: Long
+        get() = programId.toLongOrNull() ?: 0L
+
+    private val applicationIdLong: Long
+        get() = programIdLong and -8192L
+
+    val applicationId: String
+        get() = applicationIdLong.toString()
+
    val settingsName: String
        get() {
-            val programIdLong = programId.toLong()
-            return if (programIdLong == 0L) {
+            return if (applicationIdLong == 0L) {
                FileUtil.getFilename(Uri.parse(path))
            } else {
-                "0" + programIdLong.toString(16).uppercase()
+                "0" + applicationIdLong.toString(16).uppercase()
            }
        }

    val programIdHex: String
        get() {
-            val programIdLong = programId.toLong()
            return if (programIdLong == 0L) {
                "0"
            } else {
@@ -55,16 +62,32 @@ class Game(
            }
        }

+    val shaderCacheName: String
+        get() = if (programIdLong == 0L) {
+            FileUtil.getFilename(Uri.parse(path))
+        } else {
+            "0" + programIdLong.toString(16).uppercase()
+        }
+
+    val applicationIdHex: String
+        get() {
+            return if (applicationIdLong == 0L) {
+                "0"
+            } else {
+                "0" + applicationIdLong.toString(16).uppercase()
+            }
+        }
+
    val saveZipName: String
        get() = "$title ${YuzuApplication.appContext.getString(R.string.save_data).lowercase()} - ${
        LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"))
        }.zip"

    val saveDir: String
-        get() = NativeConfig.getSaveDir() + NativeLibrary.getSavePath(programId)
+        get() = NativeConfig.getSaveDir() + NativeLibrary.getSavePath(applicationId)

    val addonDir: String
-        get() = DirectoryInitialization.userDirectory + "/load/" + programIdHex + "/"
+        get() = DirectoryInitialization.userDirectory + "/load/" + applicationIdHex + "/"

    val launchIntent: Intent
        get() = Intent(YuzuApplication.appContext, EmulationActivity::class.java).apply {
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later

 // SPDX-FileCopyrightText: 2023 yuzu Emulator Project
@@ -65,7 +65,7 @@ object CustomSettingsHandler {
        // Initialize per-game config
        try {
            val fileName = FileUtil.getFilename(Uri.parse(game.path))
-            NativeConfig.initializePerGameConfig(game.programId, fileName)
+            NativeConfig.initializePerGameConfig(game.applicationId, fileName)
            Log.info("[CustomSettingsHandler] Successfully applied custom settings")
            return game
        } catch (e: Exception) {
@@ -333,20 +333,20 @@ object CustomSettingsHandler {
     */
    fun findGameByTitleId(titleId: String, context: Context): Game? {
        Log.info("[CustomSettingsHandler] Searching for game with title ID: $titleId")
-        // Convert hex title ID to decimal for comparison with programId
-        val programIdDecimal = try {
-            titleId.toLong(16).toString()
+        // Convert the program ID to the application ID used by per-game settings.
+        val applicationIdLong = try {
+            titleId.toLong(16) and -8192L
        } catch (e: NumberFormatException) {
            Log.error("[CustomSettingsHandler] Invalid title ID format: $titleId")
            return null
        }
+        val applicationIdDecimal = applicationIdLong.toString()

        // Expected hex format with "0" prefix
-        val expectedHex = "0${titleId.uppercase()}"
+        val expectedHex = "0${applicationIdLong.toString(16).uppercase()}"
        // First check cached games for fast lookup
        GameHelper.cachedGameList.find { game ->
-            game.programId == programIdDecimal ||
-                game.programIdHex.equals(expectedHex, ignoreCase = true)
+            game.applicationId == applicationIdDecimal || game.applicationIdHex.equals(expectedHex, ignoreCase = true)
        }?.let { foundGame ->
            Log.info("[CustomSettingsHandler] Found game in cache: ${foundGame.title}")
            return foundGame
@@ -355,8 +355,7 @@ object CustomSettingsHandler {
        Log.info("[CustomSettingsHandler] Game not in cache, scanning full library...")
        val allGames = GameHelper.getGames()
        val foundGame = allGames.find { game ->
-            game.programId == programIdDecimal ||
-                game.programIdHex.equals(expectedHex, ignoreCase = true)
+            game.applicationId == applicationIdDecimal || game.applicationIdHex.equals(expectedHex, ignoreCase = true)
        }
        if (foundGame != null) {
            Log.info("[CustomSettingsHandler] Found game: ${foundGame.title} at ${foundGame.path}")
@@ -170,12 +170,12 @@ object GameHelper {
                    val game = getGame(it.uri, true, false)
                    if (game != null) {
                        games.add(game)
-                        if (game.programId != "0") {
-                            gamesByProgramId[game.programId] = game
+                        if (game.applicationId != "0") {
+                            gamesByProgramId[game.applicationId] = game
                        }
                    } else if (mountedContainer) {
                        GameMetadata.getProgramId(filePath).toLongOrNull()?.let { programId ->
-                            gamesByProgramId[(programId and 0x800L.inv()).toString()]
+                            gamesByProgramId[(programId and -8192L).toString()]
                        }?.let { existingGame ->
                            NativeLibrary.getPatchesForFile(existingGame.path, existingGame.programId)
                            existingGame.version = GameMetadata.getVersion(
@@ -788,7 +788,7 @@ int Java_org_yuzu_yuzu_1emu_NativeLibrary_installFileToNand(JNIEnv* env, jobject
 jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_doesUpdateMatchProgram(JNIEnv* env, jobject jobj,
                                                                      jstring jprogramId,
                                                                      jstring jupdatePath) {
-    u64 program_id = EmulationSession::GetProgramId(env, jprogramId);
+    const u64 program_id = FileSys::GetBaseTitleID(EmulationSession::GetProgramId(env, jprogramId));
    std::string updatePath = Common::Android::GetJString(env, jupdatePath);
    std::shared_ptr<FileSys::NSP> nsp = std::make_shared<FileSys::NSP>(
        EmulationSession::GetInstance().System().GetFilesystem()->OpenFile(
@@ -796,7 +796,7 @@ jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_doesUpdateMatchProgram(JNIEnv* en
    for (const auto& item : nsp->GetNCAs()) {
        for (const auto& nca_details : item.second) {
            if (nca_details.second->GetName().ends_with(".cnmt.nca")) {
-                auto update_id = nca_details.second->GetTitleId() & ~0xFFFULL;
+                const auto update_id = FileSys::GetBaseTitleID(nca_details.second->GetTitleId());
                if (update_id == program_id) {
                    return true;
                }
@@ -1491,7 +1491,7 @@ jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_firmwareVersion(JNIEnv* env, jclas
 }

 jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_gameRequiresFirmware(JNIEnv* env, jclass clazz, jstring jprogramId) {
-    auto program_id = EmulationSession::GetProgramId(env, jprogramId);
+    const auto program_id = FileSys::GetBaseTitleID(EmulationSession::GetProgramId(env, jprogramId));

    return FirmwareManager::GameRequiresFirmware(program_id);
 }
@@ -1575,20 +1575,21 @@ jobjectArray Java_org_yuzu_yuzu_1emu_NativeLibrary_getPatchesForFile(JNIEnv* env

 void Java_org_yuzu_yuzu_1emu_NativeLibrary_removeUpdate(JNIEnv* env, jobject jobj,
                                                        jstring jprogramId) {
-    auto program_id = EmulationSession::GetProgramId(env, jprogramId);
+    const auto program_id = EmulationSession::GetProgramId(env, jprogramId);
    ContentManager::RemoveUpdate(EmulationSession::GetInstance().System().GetFileSystemController(),
                                 program_id);
 }

 void Java_org_yuzu_yuzu_1emu_NativeLibrary_removeDLC(JNIEnv* env, jobject jobj,
                                                     jstring jprogramId) {
-    auto program_id = EmulationSession::GetProgramId(env, jprogramId);
+    const auto program_id = FileSys::GetBaseTitleID(
+        EmulationSession::GetProgramId(env, jprogramId));
    ContentManager::RemoveAllDLC(EmulationSession::GetInstance().System(), program_id);
 }

 void Java_org_yuzu_yuzu_1emu_NativeLibrary_removeMod(JNIEnv* env, jobject jobj, jstring jprogramId,
                                                     jstring jname) {
-    auto program_id = EmulationSession::GetProgramId(env, jprogramId);
+    const auto program_id = EmulationSession::GetProgramId(env, jprogramId);
    ContentManager::RemoveMod(EmulationSession::GetInstance().System().GetFileSystemController(),
                              program_id, Common::Android::GetJString(env, jname));
 }
@@ -1635,7 +1636,7 @@ jint Java_org_yuzu_yuzu_1emu_NativeLibrary_verifyGameContents(JNIEnv* env, jobje

 jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_getSavePath(JNIEnv* env, jobject jobj,
                                                          jstring jprogramId) {
-    auto program_id = EmulationSession::GetProgramId(env, jprogramId);
+    const auto program_id = FileSys::GetBaseTitleID(EmulationSession::GetProgramId(env, jprogramId));
    if (program_id == 0) {
        return Common::Android::ToJString(env, "");
    }
@@ -12,6 +12,7 @@
 #include "common/fs/path_util.h"
 #include "common/logging.h"
 #include "common/settings.h"
+#include "core/file_sys/common_funcs.h"
 #include "frontend_common/config.h"
 #include "frontend_common/settings_generator.h"
 #include "native.h"
@@ -56,7 +57,7 @@ void Java_org_yuzu_yuzu_1emu_utils_NativeConfig_saveGlobalConfig(JNIEnv* env, jo
 void Java_org_yuzu_yuzu_1emu_utils_NativeConfig_initializePerGameConfig(JNIEnv* env, jobject obj,
                                                                        jstring jprogramId,
                                                                        jstring jfileName) {
-    auto program_id = EmulationSession::GetProgramId(env, jprogramId);
+    const auto program_id = FileSys::GetBaseTitleID(EmulationSession::GetProgramId(env, jprogramId));
    auto file_name = Common::Android::GetJString(env, jfileName);
    const auto config_file_name = program_id == 0 ? file_name : fmt::format("{:016X}", program_id);
    per_game_config =
@@ -322,7 +323,7 @@ void Java_org_yuzu_yuzu_1emu_utils_NativeConfig_addGameDir(JNIEnv* env, jobject

 jobjectArray Java_org_yuzu_yuzu_1emu_utils_NativeConfig_getDisabledAddons(JNIEnv* env, jobject obj,
                                                                          jstring jprogramId) {
-    auto program_id = EmulationSession::GetProgramId(env, jprogramId);
+    const auto program_id = FileSys::GetBaseTitleID(EmulationSession::GetProgramId(env, jprogramId));
    auto& disabledAddons = Settings::values.disabled_addons[program_id];
    jobjectArray jdisabledAddonsArray =
        env->NewObjectArray(disabledAddons.size(), Common::Android::GetStringClass(),
@@ -337,7 +338,7 @@ jobjectArray Java_org_yuzu_yuzu_1emu_utils_NativeConfig_getDisabledAddons(JNIEnv
 void Java_org_yuzu_yuzu_1emu_utils_NativeConfig_setDisabledAddons(JNIEnv* env, jobject obj,
                                                                  jstring jprogramId,
                                                                  jobjectArray jdisabledAddons) {
-    auto program_id = EmulationSession::GetProgramId(env, jprogramId);
+    const auto program_id = FileSys::GetBaseTitleID(EmulationSession::GetProgramId(env, jprogramId));
    Settings::values.disabled_addons[program_id].clear();
    std::vector<std::string> disabled_addons;
    const int size = env->GetArrayLength(jdisabledAddons);
@@ -1760,6 +1760,51 @@ RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
 FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
 SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
 DAMAGES.
+    </string>
+    <string name="license_opus" translatable="false">Opus</string>
+    <string name="license_opus_description" translatable="false">Modern audio compression for the internet</string>
+    <string name="license_opus_link" translatable="false">https://github.com/xiph/opus</string>
+    <string name="license_opus_copyright" translatable="false">Copyright 2001–2011 Xiph.Org, Skype Limited, Octasic, Jean-Marc Valin, Timothy B. Terriberry, CSIRO, Gregory Maxwell, Mark Borgerding, Erik de Castro Lopo</string>
+    <string name="license_opus_text" translatable="false">
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:\n\n
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.\n\n
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.\n\n
+
+- Neither the name of Internet Society, IETF or IETF Trust, nor the
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.\n\n
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS\'\' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n\n
+
+Opus is subject to the royalty-free patent licenses which are
+specified at:\n\n
+
+Xiph.Org Foundation:
+https://datatracker.ietf.org/ipr/1524/ \n\n
+
+Microsoft Corporation:
+https://datatracker.ietf.org/ipr/1914/ \n\n
+
+Broadcom Corporation:
+https://datatracker.ietf.org/ipr/1526/
    </string>
    <string name="license_sirit" translatable="false">Sirit</string>
    <string name="license_sirit_description" translatable="false">A runtime SPIR-V assembler</string>
@@ -226,14 +226,8 @@ else()
        $<$<COMPILE_LANGUAGE:C,CXX>:-Wno-sign-conversion>)
 endif()

-if (YUZU_USE_EXTERNAL_FFMPEG)
-    add_dependencies(audio_core ffmpeg-build)
-endif()
-target_include_directories(audio_core PUBLIC ${FFmpeg_INCLUDE_DIR})
-target_link_libraries(audio_core PRIVATE ${FFmpeg_LIBRARIES})
-target_link_options(audio_core PRIVATE ${FFmpeg_LDFLAGS})
-
-target_link_libraries(audio_core PUBLIC common core)
+target_include_directories(audio_core PRIVATE ${OPUS_INCLUDE_DIRS})
+target_link_libraries(audio_core PUBLIC common core Opus::opus)

 if (ENABLE_CUBEB)
    target_sources(audio_core PRIVATE
@@ -1,71 +1,107 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later

-extern "C" {
-#include <libavcodec/avcodec.h>
-#include <libavcodec/codec.h>
-#include <libavcodec/packet.h>
-#include <libavutil/channel_layout.h>
-#include <libavutil/frame.h>
-}
 #include "audio_core/adsp/apps/opus/opus_decode_object.h"
-#include "audio_core/adsp/apps/opus/opus_types.h"
 #include "common/assert.h"
-#include "core/hle/service/audio/errors.h"

 namespace AudioCore::ADSP::OpusDecoder {
+namespace {
+bool IsValidChannelCount(u32 channel_count) {
+    return channel_count == 1 || channel_count == 2;
+}
+} // namespace

 u32 OpusDecodeObject::GetWorkBufferSize(u32 channel_count) {
-    if (channel_count == 1 || channel_count == 2)
-        return u32(sizeof(OpusDecodeObject)) + 16 * channel_count;
-    return 0;
-}
-
-Result OpusDecodeObject::InitializeDecoder(u32 sample_rate, u32 channel_count) {
-    if ((codec = avcodec_find_decoder(AV_CODEC_ID_OPUS)) == nullptr)
-        return Service::Audio::ResultLibOpusInvalidState;
-    if ((avctx = avcodec_alloc_context3(codec)) == nullptr)
-        return Service::Audio::ResultLibOpusInvalidState;
-    avctx->sample_rate = sample_rate;
-    av_channel_layout_default(&avctx->ch_layout, channel_count);
-    return ResultSuccess;
-}
-
-Result OpusDecodeObject::Shutdown() {
-    if (avctx)
-        avcodec_free_context(&avctx);
-    return ResultSuccess;
-}
-
-Result OpusDecodeObject::ResetDecoder() {
-    if (avctx) {
-        avcodec_flush_buffers(avctx);
-        return ResultSuccess;
+    if (!IsValidChannelCount(channel_count)) {
+        return 0;
    }
-    return Service::Audio::ResultLibOpusInvalidState;
+    return static_cast<u32>(sizeof(OpusDecodeObject)) + opus_decoder_get_size(channel_count);
 }

-Result OpusDecodeObject::Decode(u32& out_sample_count, u64 output_data, u64 output_data_size, u64 input_data, u64 input_data_size) {
+OpusDecodeObject& OpusDecodeObject::Initialize(u64 buffer, u64 buffer2) {
+    auto* new_decoder = reinterpret_cast<OpusDecodeObject*>(buffer);
+    auto* comparison = reinterpret_cast<OpusDecodeObject*>(buffer2);
+
+    if (new_decoder->magic == DecodeObjectMagic) {
+        if (!new_decoder->initialized ||
+            (new_decoder->initialized && new_decoder->self == comparison)) {
+            new_decoder->state_valid = true;
+        }
+    } else {
+        new_decoder->initialized = false;
+        new_decoder->state_valid = true;
+    }
+    return *new_decoder;
+}
+
+s32 OpusDecodeObject::InitializeDecoder(u32 sample_rate, u32 channel_count) {
+    if (!state_valid) {
+        return OPUS_INVALID_STATE;
+    }
+
+    if (initialized) {
+        return OPUS_OK;
+    }
+
+    // Unfortunately libopus does not expose the OpusDecoder struct publicly, so we can't include
+    // it in this class. Nintendo does not allocate memory, which is why we have a workbuffer
+    // provided.
+    // We could use _create and have libopus allocate it for us, but then we have to separately
+    // track which decoder is being used between this and multistream in order to call the correct
+    // destroy from the host side.
+    // This is a bit cringe, but is safe as these objects are only ever initialized inside the given
+    // workbuffer, and GetWorkBufferSize will guarantee there's enough space to follow.
+    decoder = (LibOpusDecoder*)(this + 1);
+    s32 ret = opus_decoder_init(decoder, sample_rate, channel_count);
+    if (ret == OPUS_OK) {
+        magic = DecodeObjectMagic;
+        initialized = true;
+        state_valid = true;
+        self = this;
+        final_range = 0;
+    }
+    return ret;
+}
+
+s32 OpusDecodeObject::Shutdown() {
+    if (!state_valid) {
+        return OPUS_INVALID_STATE;
+    }
+
+    if (initialized) {
+        magic = 0x0;
+        initialized = false;
+        state_valid = false;
+        self = nullptr;
+        final_range = 0;
+        decoder = nullptr;
+    }
+    return OPUS_OK;
+}
+
+s32 OpusDecodeObject::ResetDecoder() {
+    return opus_decoder_ctl(decoder, OPUS_RESET_STATE);
+}
+
+s32 OpusDecodeObject::Decode(u32& out_sample_count, u64 output_data, u64 output_data_size,
+                             u64 input_data, u64 input_data_size) {
+    ASSERT(initialized);
    out_sample_count = 0;
-    if (avctx) {
-        AVPacket* avpkt = av_packet_alloc();
-        av_new_packet(avpkt, int(input_data_size));
-        std::memcpy(avpkt->data, reinterpret_cast<const u8*>(input_data), input_data_size);
-        avcodec_send_packet(avctx, avpkt);

-        AVFrame* frame = av_frame_alloc();
-        avcodec_receive_frame(avctx, frame);
-        std::memcpy(reinterpret_cast<u16*>(output_data), frame->data, output_data_size);
-        av_frame_free(&frame);
-        av_packet_free(&avpkt);
-
-        out_sample_count = frame->nb_samples;
-        return ResultSuccess;
+    if (!state_valid) {
+        return OPUS_INVALID_STATE;
    }
-    return Service::Audio::ResultLibOpusInvalidState;
+
+    auto ret_code_or_samples = opus_decode(
+        decoder, reinterpret_cast<const u8*>(input_data), static_cast<opus_int32>(input_data_size),
+        reinterpret_cast<opus_int16*>(output_data), static_cast<opus_int32>(output_data_size), 0);
+
+    if (ret_code_or_samples < OPUS_OK) {
+        return ret_code_or_samples;
+    }
+
+    out_sample_count = ret_code_or_samples;
+    return opus_decoder_ctl(decoder, OPUS_GET_FINAL_RANGE_REQUEST, &final_range);
 }

 } // namespace AudioCore::ADSP::OpusDecoder
@@ -1,31 +1,38 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later

 #pragma once

-#include "common/common_types.h"
-#include "audio_core/adsp/apps/opus/opus_types.h"
-#include "core/hle/result.h"
+#include <opus.h>

-struct AVCodec;
-struct AVCodecContext;
+#include "common/common_types.h"

 namespace AudioCore::ADSP::OpusDecoder {
+using LibOpusDecoder = ::OpusDecoder;
+static constexpr u32 DecodeObjectMagic = 0xDEADBEEF;

 class OpusDecodeObject {
 public:
    static u32 GetWorkBufferSize(u32 channel_count);
+    static OpusDecodeObject& Initialize(u64 buffer, u64 buffer2);

-    Result InitializeDecoder(u32 sample_rate, u32 channel_count);
-    Result Shutdown();
-    Result ResetDecoder();
-    Result Decode(u32& out_sample_count, u64 output_data, u64 output_data_size, u64 input_data, u64 input_data_size);
+    s32 InitializeDecoder(u32 sample_rate, u32 channel_count);
+    s32 Shutdown();
+    s32 ResetDecoder();
+    s32 Decode(u32& out_sample_count, u64 output_data, u64 output_data_size, u64 input_data,
+               u64 input_data_size);
+    u32 GetFinalRange() const noexcept {
+        return final_range;
+    }

-    AVCodec const* codec = nullptr;
-    AVCodecContext* avctx = nullptr;
+private:
+    u32 magic;
+    bool initialized;
+    bool state_valid;
+    OpusDecodeObject* self;
+    u32 final_range;
+    LibOpusDecoder* decoder;
 };
+static_assert(std::is_trivially_constructible_v<OpusDecodeObject>);

 } // namespace AudioCore::ADSP::OpusDecoder
@@ -16,7 +16,6 @@
 #include "common/thread.h"
 #include "core/core.h"
 #include "core/core_timing.h"
-#include "core/hle/service/audio/errors.h"

 namespace AudioCore::ADSP::OpusDecoder {

@@ -50,16 +49,11 @@ OpusDecoder::~OpusDecoder() {
    // Shutdown the thread
    Send(Direction::DSP, Message::Shutdown);
    auto msg = Receive(Direction::Host);
-    ASSERT_MSG(msg == Message::ShutdownOK, "Expected Opus shutdown code {}, got {}", Message::ShutdownOK, msg);
+    ASSERT_MSG(msg == Message::ShutdownOK, "Expected Opus shutdown code {}, got {}",
+               Message::ShutdownOK, msg);
    main_thread.request_stop();
    main_thread.join();
    running = false;
-
-    // Must shutdown as there are AV allocations which are manual
-    for (auto& e : decode_objects)
-        e.second.Shutdown();
-    for (auto& e : ms_decode_objects)
-        e.second.Shutdown();
 }

 void OpusDecoder::Send(Direction dir, u32 message) {
@@ -74,195 +68,202 @@ void OpusDecoder::Init(std::stop_token stop_token) {
    Common::SetCurrentThreadName("DSP_OpusDecoder_Init");

    if (Receive(Direction::DSP, stop_token) != Message::Start) {
-        LOG_ERROR(Service_Audio, "DSP OpusDecoder failed to receive Start message. Opus initialization failed.");
+        LOG_ERROR(Service_Audio,
+                  "DSP OpusDecoder failed to receive Start message. Opus initialization failed.");
        return;
    }
-    // Main OpusDecoder thread, responsible for processing the incoming Opus packets.
-    main_thread = std::jthread([this](std::stop_token thread_stop_token) {
-        Common::SetCurrentThreadName("DSP_OpusDecoder_Main");
-        while (!thread_stop_token.stop_requested()) {
-            auto msg = Receive(Direction::DSP, thread_stop_token);
-            switch (msg) {
-            case Shutdown:
-                Send(Direction::Host, Message::ShutdownOK);
-                return;
-            case GetWorkBufferSize: {
-                auto channel_count = s32(shared_memory->host_send_data[0]);
-
-                ASSERT(IsValidChannelCount(channel_count));
-
-                shared_memory->dsp_return_data[0] = OpusDecodeObject::GetWorkBufferSize(channel_count);
-                Send(Direction::Host, Message::GetWorkBufferSizeOK);
-                break;
-            }
-            case InitializeDecodeObject: {
-                auto buffer = shared_memory->host_send_data[0];
-                auto buffer_size = shared_memory->host_send_data[1];
-                auto sample_rate = s32(shared_memory->host_send_data[2]);
-                auto channel_count = s32(shared_memory->host_send_data[3]);
-
-                ASSERT(sample_rate >= 0);
-                ASSERT(IsValidChannelCount(channel_count));
-                ASSERT(buffer_size >= OpusDecodeObject::GetWorkBufferSize(channel_count));
-
-                if (auto const it = decode_objects.find(buffer); it != decode_objects.end()) {
-                    it->second.Shutdown();
-                    shared_memory->dsp_return_data[0] = it->second.InitializeDecoder(sample_rate, channel_count).raw;
-                } else {
-                    OpusDecodeObject obj{};
-                    shared_memory->dsp_return_data[0] = obj.InitializeDecoder(sample_rate, channel_count).raw;
-                    decode_objects.insert_or_assign(buffer, obj);
-                }
-                Send(Direction::Host, Message::InitializeDecodeObjectOK);
-                break;
-            }
-            case ShutdownDecodeObject: {
-                auto buffer = shared_memory->host_send_data[0];
-                //[[maybe_unused]] auto buffer_size = shared_memory->host_send_data[1];
-                if (auto const it = decode_objects.find(buffer); it != decode_objects.end()) {
-                    shared_memory->dsp_return_data[0] = it->second.Shutdown().raw;
-                } else {
-                    LOG_ERROR(Audio_DSP, "operating unregistered buffer {}", buffer);
-                    shared_memory->dsp_return_data[0] = Service::Audio::ResultLibOpusInvalidState.raw;
-                }
-                Send(Direction::Host, Message::ShutdownDecodeObjectOK);
-                break;
-            }
-            case DecodeInterleaved: {
-                auto start_time = system.CoreTiming().GetGlobalTimeUs();
-
-                auto buffer = shared_memory->host_send_data[0];
-                auto input_data = shared_memory->host_send_data[1];
-                auto input_data_size = shared_memory->host_send_data[2];
-                auto output_data = shared_memory->host_send_data[3];
-                auto output_data_size = shared_memory->host_send_data[4];
-                //auto final_range = static_cast<u32>(shared_memory->host_send_data[5]);
-                auto reset_requested = shared_memory->host_send_data[6];
-
-                u32 decoded_samples{0};
-
-                if (auto const it = decode_objects.find(buffer); it != decode_objects.end()) {
-                    auto res = ResultSuccess;
-                    if (reset_requested)
-                        res = it->second.ResetDecoder();
-                    if (res == ResultSuccess)
-                        res = it->second.Decode(decoded_samples, output_data, output_data_size, input_data, input_data_size);
-
-                    auto end_time = system.CoreTiming().GetGlobalTimeUs();
-                    shared_memory->dsp_return_data[0] = res.raw;
-                    shared_memory->dsp_return_data[1] = decoded_samples;
-                    shared_memory->dsp_return_data[2] = (end_time - start_time).count();
-                } else {
-                    LOG_ERROR(Audio_DSP, "operating unregistered buffer {}", buffer);
-                    shared_memory->dsp_return_data[0] = Service::Audio::ResultLibOpusInvalidState.raw;
-                }
-                Send(Direction::Host, Message::DecodeInterleavedOK);
-                break;
-            }
-            case MapMemory: {
-                [[maybe_unused]] auto buffer = shared_memory->host_send_data[0];
-                [[maybe_unused]] auto buffer_size = shared_memory->host_send_data[1];
-                Send(Direction::Host, Message::MapMemoryOK);
-                break;
-            }
-            case UnmapMemory: {
-                [[maybe_unused]] auto buffer = shared_memory->host_send_data[0];
-                [[maybe_unused]] auto buffer_size = shared_memory->host_send_data[1];
-                Send(Direction::Host, Message::UnmapMemoryOK);
-                break;
-            }
-            case GetWorkBufferSizeForMultiStream: {
-                auto total_stream_count = s32(shared_memory->host_send_data[0]);
-                auto stereo_stream_count = s32(shared_memory->host_send_data[1]);
-
-                ASSERT(IsValidMultiStreamStreamCounts(total_stream_count, stereo_stream_count));
-
-                shared_memory->dsp_return_data[0] = OpusMultiStreamDecodeObject::GetWorkBufferSize(
-                    total_stream_count, stereo_stream_count);
-                Send(Direction::Host, Message::GetWorkBufferSizeForMultiStreamOK);
-                break;
-            }
-            case InitializeMultiStreamDecodeObject: {
-                auto buffer = shared_memory->host_send_data[0];
-                auto buffer_size = shared_memory->host_send_data[1];
-                auto sample_rate = s32(shared_memory->host_send_data[2]);
-                auto channel_count = s32(shared_memory->host_send_data[3]);
-                auto total_stream_count = s32(shared_memory->host_send_data[4]);
-                auto stereo_stream_count = s32(shared_memory->host_send_data[5]);
-                // Nintendo seem to have a bug here, they try to use &host_send_data[6] for the channel
-                // mappings, but [6] is never set, and there is not enough room in the argument data for
-                // more than 40 channels, when 255 are possible.
-                // It also means the mapping values are undefined, though likely always 0,
-                // and the mappings given by the game are ignored. The mappings are copied to this
-                // dedicated buffer host side, so let's do as intended.
-                auto mappings = shared_memory->channel_mapping.data();
-
-                ASSERT(IsValidMultiStreamStreamCounts(total_stream_count, stereo_stream_count));
-                ASSERT(sample_rate >= 0);
-                ASSERT(buffer_size >= OpusMultiStreamDecodeObject::GetWorkBufferSize(total_stream_count, stereo_stream_count));
-
-                if (auto const it = ms_decode_objects.find(buffer); it != ms_decode_objects.end()) {
-                    it->second.Shutdown();
-                    shared_memory->dsp_return_data[0] = it->second.InitializeDecoder(sample_rate, total_stream_count, channel_count, stereo_stream_count, mappings).raw;
-                } else {
-                    OpusMultiStreamDecodeObject obj{};
-                    shared_memory->dsp_return_data[0] = obj.InitializeDecoder(sample_rate, total_stream_count, channel_count, stereo_stream_count, mappings).raw;
-                    ms_decode_objects.insert_or_assign(buffer, obj);
-                }
-                Send(Direction::Host, Message::InitializeMultiStreamDecodeObjectOK);
-                break;
-            }
-            case ShutdownMultiStreamDecodeObject: {
-                auto buffer = shared_memory->host_send_data[0];
-                //[[maybe_unused]] auto buffer_size = shared_memory->host_send_data[1];
-                if (auto const it = ms_decode_objects.find(buffer); it != ms_decode_objects.end()) {
-                    shared_memory->dsp_return_data[0] = it->second.Shutdown().raw;
-                } else {
-                    LOG_ERROR(Audio_DSP, "operating unregistered buffer {}", buffer);
-                    shared_memory->dsp_return_data[0] = Service::Audio::ResultLibOpusInvalidState.raw;
-                }
-                Send(Direction::Host, Message::ShutdownMultiStreamDecodeObjectOK);
-                break;
-            }
-            case DecodeInterleavedForMultiStream: {
-                auto start_time = system.CoreTiming().GetGlobalTimeUs();
-
-                auto buffer = shared_memory->host_send_data[0];
-                auto input_data = shared_memory->host_send_data[1];
-                auto input_data_size = shared_memory->host_send_data[2];
-                auto output_data = shared_memory->host_send_data[3];
-                auto output_data_size = shared_memory->host_send_data[4];
-                //auto final_range = static_cast<u32>(shared_memory->host_send_data[5]);
-                auto reset_requested = shared_memory->host_send_data[6];
-
-                u32 decoded_samples{0};
-
-                if (auto const it = ms_decode_objects.find(buffer); it != ms_decode_objects.end()) {
-                    auto res = ResultSuccess;
-                    if (reset_requested)
-                        res = it->second.ResetDecoder();
-                    if (res == ResultSuccess)
-                        res = it->second.Decode(decoded_samples, output_data, output_data_size, input_data, input_data_size);
-
-                    auto end_time = system.CoreTiming().GetGlobalTimeUs();
-                    shared_memory->dsp_return_data[0] = res.raw;
-                    shared_memory->dsp_return_data[1] = decoded_samples;
-                    shared_memory->dsp_return_data[2] = (end_time - start_time).count();
-                } else {
-                    LOG_ERROR(Audio_DSP, "operating unregistered buffer {}", buffer);
-                    shared_memory->dsp_return_data[0] = Service::Audio::ResultLibOpusInvalidState.raw;
-                }
-                Send(Direction::Host, Message::DecodeInterleavedForMultiStreamOK);
-                break;
-            }
-            default:
-                LOG_ERROR(Audio_DSP, "Invalid OpusDecoder command {}", msg);
-                continue;
-            }
-        }
-    });
+    main_thread = std::jthread([this](std::stop_token st) { Main(st); });
    running = true;
    Send(Direction::Host, Message::StartOK);
 }

+void OpusDecoder::Main(std::stop_token stop_token) {
+    Common::SetCurrentThreadName("DSP_OpusDecoder_Main");
+
+    while (!stop_token.stop_requested()) {
+        auto msg = Receive(Direction::DSP, stop_token);
+        switch (msg) {
+        case Shutdown:
+            Send(Direction::Host, Message::ShutdownOK);
+            return;
+
+        case GetWorkBufferSize: {
+            auto channel_count = static_cast<s32>(shared_memory->host_send_data[0]);
+
+            ASSERT(IsValidChannelCount(channel_count));
+
+            shared_memory->dsp_return_data[0] = OpusDecodeObject::GetWorkBufferSize(channel_count);
+            Send(Direction::Host, Message::GetWorkBufferSizeOK);
+        } break;
+
+        case InitializeDecodeObject: {
+            auto buffer = shared_memory->host_send_data[0];
+            auto buffer_size = shared_memory->host_send_data[1];
+            auto sample_rate = static_cast<s32>(shared_memory->host_send_data[2]);
+            auto channel_count = static_cast<s32>(shared_memory->host_send_data[3]);
+
+            ASSERT(sample_rate >= 0);
+            ASSERT(IsValidChannelCount(channel_count));
+            ASSERT(buffer_size >= OpusDecodeObject::GetWorkBufferSize(channel_count));
+
+            auto& decoder_object = OpusDecodeObject::Initialize(buffer, buffer);
+            shared_memory->dsp_return_data[0] =
+                decoder_object.InitializeDecoder(sample_rate, channel_count);
+
+            Send(Direction::Host, Message::InitializeDecodeObjectOK);
+        } break;
+
+        case ShutdownDecodeObject: {
+            auto buffer = shared_memory->host_send_data[0];
+            [[maybe_unused]] auto buffer_size = shared_memory->host_send_data[1];
+
+            auto& decoder_object = OpusDecodeObject::Initialize(buffer, buffer);
+            shared_memory->dsp_return_data[0] = decoder_object.Shutdown();
+
+            Send(Direction::Host, Message::ShutdownDecodeObjectOK);
+        } break;
+
+        case DecodeInterleaved: {
+            auto start_time = system.CoreTiming().GetGlobalTimeUs();
+
+            auto buffer = shared_memory->host_send_data[0];
+            auto input_data = shared_memory->host_send_data[1];
+            auto input_data_size = shared_memory->host_send_data[2];
+            auto output_data = shared_memory->host_send_data[3];
+            auto output_data_size = shared_memory->host_send_data[4];
+            auto final_range = static_cast<u32>(shared_memory->host_send_data[5]);
+            auto reset_requested = shared_memory->host_send_data[6];
+
+            u32 decoded_samples{0};
+
+            auto& decoder_object = OpusDecodeObject::Initialize(buffer, buffer);
+            s32 error_code{OPUS_OK};
+            if (reset_requested) {
+                error_code = decoder_object.ResetDecoder();
+            }
+
+            if (error_code == OPUS_OK) {
+                error_code = decoder_object.Decode(decoded_samples, output_data, output_data_size,
+                                                   input_data, input_data_size);
+            }
+
+            if (error_code == OPUS_OK) {
+                if (final_range && decoder_object.GetFinalRange() != final_range) {
+                    error_code = OPUS_INVALID_PACKET;
+                }
+            }
+
+            auto end_time = system.CoreTiming().GetGlobalTimeUs();
+            shared_memory->dsp_return_data[0] = error_code;
+            shared_memory->dsp_return_data[1] = decoded_samples;
+            shared_memory->dsp_return_data[2] = (end_time - start_time).count();
+
+            Send(Direction::Host, Message::DecodeInterleavedOK);
+        } break;
+
+        case MapMemory: {
+            [[maybe_unused]] auto buffer = shared_memory->host_send_data[0];
+            [[maybe_unused]] auto buffer_size = shared_memory->host_send_data[1];
+            Send(Direction::Host, Message::MapMemoryOK);
+        } break;
+
+        case UnmapMemory: {
+            [[maybe_unused]] auto buffer = shared_memory->host_send_data[0];
+            [[maybe_unused]] auto buffer_size = shared_memory->host_send_data[1];
+            Send(Direction::Host, Message::UnmapMemoryOK);
+        } break;
+
+        case GetWorkBufferSizeForMultiStream: {
+            auto total_stream_count = static_cast<s32>(shared_memory->host_send_data[0]);
+            auto stereo_stream_count = static_cast<s32>(shared_memory->host_send_data[1]);
+
+            ASSERT(IsValidMultiStreamStreamCounts(total_stream_count, stereo_stream_count));
+
+            shared_memory->dsp_return_data[0] = OpusMultiStreamDecodeObject::GetWorkBufferSize(
+                total_stream_count, stereo_stream_count);
+            Send(Direction::Host, Message::GetWorkBufferSizeForMultiStreamOK);
+        } break;
+
+        case InitializeMultiStreamDecodeObject: {
+            auto buffer = shared_memory->host_send_data[0];
+            auto buffer_size = shared_memory->host_send_data[1];
+            auto sample_rate = static_cast<s32>(shared_memory->host_send_data[2]);
+            auto channel_count = static_cast<s32>(shared_memory->host_send_data[3]);
+            auto total_stream_count = static_cast<s32>(shared_memory->host_send_data[4]);
+            auto stereo_stream_count = static_cast<s32>(shared_memory->host_send_data[5]);
+            // Nintendo seem to have a bug here, they try to use &host_send_data[6] for the channel
+            // mappings, but [6] is never set, and there is not enough room in the argument data for
+            // more than 40 channels, when 255 are possible.
+            // It also means the mapping values are undefined, though likely always 0,
+            // and the mappings given by the game are ignored. The mappings are copied to this
+            // dedicated buffer host side, so let's do as intended.
+            auto mappings = shared_memory->channel_mapping.data();
+
+            ASSERT(IsValidMultiStreamStreamCounts(total_stream_count, stereo_stream_count));
+            ASSERT(sample_rate >= 0);
+            ASSERT(buffer_size >= OpusMultiStreamDecodeObject::GetWorkBufferSize(
+                                      total_stream_count, stereo_stream_count));
+
+            auto& decoder_object = OpusMultiStreamDecodeObject::Initialize(buffer, buffer);
+            shared_memory->dsp_return_data[0] = decoder_object.InitializeDecoder(
+                sample_rate, total_stream_count, channel_count, stereo_stream_count, mappings);
+
+            Send(Direction::Host, Message::InitializeMultiStreamDecodeObjectOK);
+        } break;
+
+        case ShutdownMultiStreamDecodeObject: {
+            auto buffer = shared_memory->host_send_data[0];
+            [[maybe_unused]] auto buffer_size = shared_memory->host_send_data[1];
+
+            auto& decoder_object = OpusMultiStreamDecodeObject::Initialize(buffer, buffer);
+            shared_memory->dsp_return_data[0] = decoder_object.Shutdown();
+
+            Send(Direction::Host, Message::ShutdownMultiStreamDecodeObjectOK);
+        } break;
+
+        case DecodeInterleavedForMultiStream: {
+            auto start_time = system.CoreTiming().GetGlobalTimeUs();
+
+            auto buffer = shared_memory->host_send_data[0];
+            auto input_data = shared_memory->host_send_data[1];
+            auto input_data_size = shared_memory->host_send_data[2];
+            auto output_data = shared_memory->host_send_data[3];
+            auto output_data_size = shared_memory->host_send_data[4];
+            auto final_range = static_cast<u32>(shared_memory->host_send_data[5]);
+            auto reset_requested = shared_memory->host_send_data[6];
+
+            u32 decoded_samples{0};
+
+            auto& decoder_object = OpusMultiStreamDecodeObject::Initialize(buffer, buffer);
+            s32 error_code{OPUS_OK};
+            if (reset_requested) {
+                error_code = decoder_object.ResetDecoder();
+            }
+
+            if (error_code == OPUS_OK) {
+                error_code = decoder_object.Decode(decoded_samples, output_data, output_data_size,
+                                                   input_data, input_data_size);
+            }
+
+            if (error_code == OPUS_OK) {
+                if (final_range && decoder_object.GetFinalRange() != final_range) {
+                    error_code = OPUS_INVALID_PACKET;
+                }
+            }
+
+            auto end_time = system.CoreTiming().GetGlobalTimeUs();
+            shared_memory->dsp_return_data[0] = error_code;
+            shared_memory->dsp_return_data[1] = decoded_samples;
+            shared_memory->dsp_return_data[2] = (end_time - start_time).count();
+
+            Send(Direction::Host, Message::DecodeInterleavedForMultiStreamOK);
+        } break;
+
+        default:
+            LOG_ERROR(Service_Audio, "Invalid OpusDecoder command {}", msg);
+            continue;
+        }
+    }
+}
+
 } // namespace AudioCore::ADSP::OpusDecoder
@@ -9,9 +9,6 @@
 #include <memory>
 #include <thread>

-#include "ankerl/unordered_dense.h"
-#include "audio_core/adsp/apps/opus/opus_decode_object.h"
-#include "audio_core/adsp/apps/opus/opus_multistream_decode_object.h"
 #include "audio_core/adsp/apps/opus/shared_memory.h"
 #include "audio_core/adsp/mailbox.h"
 #include "common/common_types.h"
@@ -71,7 +68,9 @@ public:
    }

 private:
-    /// @brief Initializing thread, launched at audio_core boot to avoid blocking the main emu boot thread.
+    /**
+     * Initializing thread, launched at audio_core boot to avoid blocking the main emu boot thread.
+     */
    void Init(std::stop_token stop_token);
    /**
     * Main OpusDecoder thread, responsible for processing the incoming Opus packets.
@@ -91,9 +90,6 @@ private:
    /// Structure shared with the host, input data set by the host before sending a mailbox message,
    /// and the responses are written back by the OpusDecoder.
    SharedMemory* shared_memory{};
-
-    ankerl::unordered_dense::map<u64, OpusDecodeObject> decode_objects;
-    ankerl::unordered_dense::map<u64, OpusMultiStreamDecodeObject> ms_decode_objects;
 };

 } // namespace AudioCore::ADSP::OpusDecoder
@@ -4,17 +4,8 @@
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later

-extern "C" {
-#include <libavcodec/avcodec.h>
-#include <libavcodec/codec.h>
-#include <libavcodec/packet.h>
-#include <libavutil/channel_layout.h>
-#include <libavutil/frame.h>
-}
 #include "audio_core/adsp/apps/opus/opus_multistream_decode_object.h"
 #include "common/assert.h"
-#include "core/hle/result.h"
-#include "core/hle/service/audio/errors.h"

 namespace AudioCore::ADSP::OpusDecoder {

@@ -22,59 +13,101 @@ namespace {
 constexpr u32 OpusStreamCountMax = 255;

 bool IsValidStreamCounts(u32 total_stream_count, u32 stereo_stream_count) {
-    return total_stream_count > 0 && total_stream_count <= OpusStreamCountMax
-        && s32(stereo_stream_count) >= 0 && stereo_stream_count <= total_stream_count;
+    return total_stream_count > 0 && total_stream_count <= OpusStreamCountMax &&
+           static_cast<s32>(stereo_stream_count) >= 0 &&
+           stereo_stream_count <= total_stream_count;
 }
 } // namespace

-u32 OpusMultiStreamDecodeObject::GetWorkBufferSize(u32 total_stream_count, u32 stereo_stream_count) {
-    if (IsValidStreamCounts(total_stream_count, stereo_stream_count))
-        return u32(sizeof(OpusMultiStreamDecodeObject)) + 2556 * (total_stream_count * stereo_stream_count);
+u32 OpusMultiStreamDecodeObject::GetWorkBufferSize(u32 total_stream_count,
+                                                   u32 stereo_stream_count) {
+    if (IsValidStreamCounts(total_stream_count, stereo_stream_count)) {
+        return static_cast<u32>(sizeof(OpusMultiStreamDecodeObject)) +
+               opus_multistream_decoder_get_size(total_stream_count, stereo_stream_count);
+    }
    return 0;
 }

-Result OpusMultiStreamDecodeObject::InitializeDecoder(u32 sample_rate, u32 total_stream_count, u32 channel_count, u32 stereo_stream_count, u8* mappings) {
-    if ((codec = avcodec_find_decoder(AV_CODEC_ID_OPUS)) == nullptr)
-        return Service::Audio::ResultLibOpusInvalidState;
-    if ((avctx = avcodec_alloc_context3(codec)))
-        return Service::Audio::ResultLibOpusInvalidState;
-    avctx->sample_rate = sample_rate;
-    av_channel_layout_default(&avctx->ch_layout, channel_count);
-    return ResultSuccess;
-}
+OpusMultiStreamDecodeObject& OpusMultiStreamDecodeObject::Initialize(u64 buffer, u64 buffer2) {
+    auto* new_decoder = reinterpret_cast<OpusMultiStreamDecodeObject*>(buffer);
+    auto* comparison = reinterpret_cast<OpusMultiStreamDecodeObject*>(buffer2);

-Result OpusMultiStreamDecodeObject::Shutdown() {
-    if (avctx)
-        avcodec_free_context(&avctx);
-    return ResultSuccess;
-}
-
-Result OpusMultiStreamDecodeObject::ResetDecoder() {
-    if (avctx) {
-        avcodec_flush_buffers(avctx);
-        return ResultSuccess;
+    if (new_decoder->magic == DecodeMultiStreamObjectMagic) {
+        if (!new_decoder->initialized ||
+            (new_decoder->initialized && new_decoder->self == comparison)) {
+            new_decoder->state_valid = true;
+        }
+    } else {
+        new_decoder->initialized = false;
+        new_decoder->state_valid = true;
    }
-    return Service::Audio::ResultLibOpusInvalidState;
+    return *new_decoder;
 }

-Result OpusMultiStreamDecodeObject::Decode(u32& out_sample_count, u64 output_data, u64 output_data_size, u64 input_data, u64 input_data_size) {
+s32 OpusMultiStreamDecodeObject::InitializeDecoder(u32 sample_rate, u32 total_stream_count,
+                                                   u32 channel_count, u32 stereo_stream_count,
+                                                   u8* mappings) {
+    if (!state_valid) {
+        return OPUS_INVALID_STATE;
+    }
+
+    if (initialized) {
+        return OPUS_OK;
+    }
+
+    // See OpusDecodeObject::InitializeDecoder for an explanation of this
+    decoder = (LibOpusMSDecoder*)(this + 1);
+    s32 ret = opus_multistream_decoder_init(decoder, sample_rate, channel_count, total_stream_count,
+                                            stereo_stream_count, mappings);
+    if (ret == OPUS_OK) {
+        magic = DecodeMultiStreamObjectMagic;
+        initialized = true;
+        state_valid = true;
+        self = this;
+        final_range = 0;
+    }
+    return ret;
+}
+
+s32 OpusMultiStreamDecodeObject::Shutdown() {
+    if (!state_valid) {
+        return OPUS_INVALID_STATE;
+    }
+
+    if (initialized) {
+        magic = 0x0;
+        initialized = false;
+        state_valid = false;
+        self = nullptr;
+        final_range = 0;
+        decoder = nullptr;
+    }
+    return OPUS_OK;
+}
+
+s32 OpusMultiStreamDecodeObject::ResetDecoder() {
+    return opus_multistream_decoder_ctl(decoder, OPUS_RESET_STATE);
+}
+
+s32 OpusMultiStreamDecodeObject::Decode(u32& out_sample_count, u64 output_data,
+                                        u64 output_data_size, u64 input_data, u64 input_data_size) {
+    ASSERT(initialized);
    out_sample_count = 0;
-    if (avctx) {
-        AVPacket* avpkt = av_packet_alloc();
-        av_new_packet(avpkt, int(input_data_size));
-        std::memcpy(avpkt->data, reinterpret_cast<const u8*>(input_data), input_data_size);
-        avcodec_send_packet(avctx, avpkt);

-        AVFrame* frame = av_frame_alloc();
-        avcodec_receive_frame(avctx, frame);
-        std::memcpy(reinterpret_cast<u16*>(output_data), frame->data, output_data_size);
-        av_frame_free(&frame);
-        av_packet_free(&avpkt);
-
-        out_sample_count = frame->nb_samples;
-        return ResultSuccess;
+    if (!state_valid) {
+        return OPUS_INVALID_STATE;
    }
-    return Service::Audio::ResultLibOpusInvalidState;
+
+    auto ret_code_or_samples = opus_multistream_decode(
+        decoder, reinterpret_cast<const u8*>(input_data), static_cast<opus_int32>(input_data_size),
+        reinterpret_cast<opus_int16*>(output_data), static_cast<opus_int32>(output_data_size), 0);
+
+    if (ret_code_or_samples < OPUS_OK) {
+        return ret_code_or_samples;
+    }
+
+    out_sample_count = ret_code_or_samples;
+    return opus_multistream_decoder_ctl(decoder, OPUS_GET_FINAL_RANGE_REQUEST, &final_range);
 }

 } // namespace AudioCore::ADSP::OpusDecoder
@@ -1,31 +1,39 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later

 #pragma once

-#include "audio_core/adsp/apps/opus/opus_types.h"
-#include "common/common_types.h"
-#include "core/hle/result.h"
+#include <opus_multistream.h>

-struct AVCodec;
-struct AVCodecContext;
+#include "common/common_types.h"

 namespace AudioCore::ADSP::OpusDecoder {
+using LibOpusMSDecoder = ::OpusMSDecoder;
+static constexpr u32 DecodeMultiStreamObjectMagic = 0xDEADBEEF;

 class OpusMultiStreamDecodeObject {
 public:
    static u32 GetWorkBufferSize(u32 total_stream_count, u32 stereo_stream_count);
+    static OpusMultiStreamDecodeObject& Initialize(u64 buffer, u64 buffer2);

-    Result InitializeDecoder(u32 sample_rate, u32 total_stream_count, u32 channel_count, u32 stereo_stream_count, u8* mappings);
-    Result Shutdown();
-    Result ResetDecoder();
-    Result Decode(u32& out_sample_count, u64 output_data, u64 output_data_size, u64 input_data, u64 input_data_size);
+    s32 InitializeDecoder(u32 sample_rate, u32 total_stream_count, u32 channel_count,
+                          u32 stereo_stream_count, u8* mappings);
+    s32 Shutdown();
+    s32 ResetDecoder();
+    s32 Decode(u32& out_sample_count, u64 output_data, u64 output_data_size, u64 input_data,
+               u64 input_data_size);
+    u32 GetFinalRange() const noexcept {
+        return final_range;
+    }

-    AVCodec const* codec = nullptr;
-    AVCodecContext* avctx = nullptr;
+private:
+    u32 magic;
+    bool initialized;
+    bool state_valid;
+    OpusMultiStreamDecodeObject* self;
+    u32 final_range;
+    LibOpusMSDecoder* decoder;
 };
+static_assert(std::is_trivially_constructible_v<OpusMultiStreamDecodeObject>);

 } // namespace AudioCore::ADSP::OpusDecoder
@@ -1,32 +0,0 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-#pragma once
-
-#include "common/common_types.h"
-
-namespace AudioCore::ADSP {
-
-static constexpr u32 DECODE_OBJECT_MAGIC = 0xDEADBEEF;
-struct LibOpusDecoder {
-    u32 magic;
-    bool initialized;
-    bool state_valid;
-    LibOpusDecoder* self;
-    u32 final_range;
-    void* decoder;
-};
-static_assert(sizeof(LibOpusDecoder) == 32);
-
-static constexpr u32 DECODE_MULTISTREAM_OBJECT_MAGIC = 0xDEADBEEF;
-struct LibOpusMultistreamDecoder {
-    u32 magic;
-    bool initialized;
-    bool state_valid;
-    LibOpusMultistreamDecoder* self;
-    u32 final_range;
-    void* decoder;
-};
-static_assert(sizeof(LibOpusMultistreamDecoder) == 32);
-
-}
@@ -9,18 +9,39 @@
 #include "audio_core/audio_core.h"
 #include "audio_core/opus/hardware_opus.h"
 #include "core/core.h"
-#include "core/hle/result.h"

 namespace AudioCore::OpusDecoder {
-
 namespace {
 using namespace Service::Audio;
+
+static constexpr Result ResultCodeFromLibOpusErrorCode(u64 error_code) {
+    s32 error{static_cast<s32>(error_code)};
+    ASSERT(error <= OPUS_OK);
+    switch (error) {
+    case OPUS_ALLOC_FAIL:
+        R_THROW(ResultLibOpusAllocFail);
+    case OPUS_INVALID_STATE:
+        R_THROW(ResultLibOpusInvalidState);
+    case OPUS_UNIMPLEMENTED:
+        R_THROW(ResultLibOpusUnimplemented);
+    case OPUS_INVALID_PACKET:
+        R_THROW(ResultLibOpusInvalidPacket);
+    case OPUS_INTERNAL_ERROR:
+        R_THROW(ResultLibOpusInternalError);
+    case OPUS_BUFFER_TOO_SMALL:
+        R_THROW(ResultBufferTooSmall);
+    case OPUS_BAD_ARG:
+        R_THROW(ResultLibOpusBadArg);
+    case OPUS_OK:
+        R_RETURN(ResultSuccess);
+    }
+    UNREACHABLE();
+}
+
 } // namespace

 HardwareOpus::HardwareOpus(Core::System& system_)
-    : system{system_}
-    , opus_decoder{system.AudioCore().ADSP().OpusDecoder()}
-{
+    : system{system_}, opus_decoder{system.AudioCore().ADSP().OpusDecoder()} {
    opus_decoder.SetSharedMemory(shared_memory);
 }

@@ -71,7 +92,7 @@ Result HardwareOpus::InitializeDecodeObject(u32 sample_rate, u32 channel_count,
        R_THROW(ResultInvalidOpusDSPReturnCode);
    }

-    R_RETURN(Result(u32(shared_memory.dsp_return_data[0])));
+    R_RETURN(ResultCodeFromLibOpusErrorCode(shared_memory.dsp_return_data[0]));
 }

 Result HardwareOpus::InitializeMultiStreamDecodeObject(u32 sample_rate, u32 channel_count,
@@ -99,7 +120,7 @@ Result HardwareOpus::InitializeMultiStreamDecodeObject(u32 sample_rate, u32 chan
        R_THROW(ResultInvalidOpusDSPReturnCode);
    }

-    R_RETURN(Result(u32(shared_memory.dsp_return_data[0])));
+    R_RETURN(ResultCodeFromLibOpusErrorCode(shared_memory.dsp_return_data[0]));
 }

 Result HardwareOpus::ShutdownDecodeObject(void* buffer, u64 buffer_size) {
@@ -113,7 +134,7 @@ Result HardwareOpus::ShutdownDecodeObject(void* buffer, u64 buffer_size) {
               "Expected Opus shutdown code {}, got {}",
               ADSP::OpusDecoder::Message::ShutdownDecodeObjectOK, msg);

-    R_RETURN(Result(u32(shared_memory.dsp_return_data[0])));
+    R_RETURN(ResultCodeFromLibOpusErrorCode(shared_memory.dsp_return_data[0]));
 }

 Result HardwareOpus::ShutdownMultiStreamDecodeObject(void* buffer, u64 buffer_size) {
@@ -128,7 +149,7 @@ Result HardwareOpus::ShutdownMultiStreamDecodeObject(void* buffer, u64 buffer_si
               "Expected Opus shutdown code {}, got {}",
               ADSP::OpusDecoder::Message::ShutdownMultiStreamDecodeObjectOK, msg);

-    R_RETURN(Result(u32(shared_memory.dsp_return_data[0])));
+    R_RETURN(ResultCodeFromLibOpusErrorCode(shared_memory.dsp_return_data[0]));
 }

 Result HardwareOpus::DecodeInterleaved(u32& out_sample_count, void* output_data,
@@ -152,12 +173,12 @@ Result HardwareOpus::DecodeInterleaved(u32& out_sample_count, void* output_data,
        R_THROW(ResultInvalidOpusDSPReturnCode);
    }

-    auto error_code = s32(shared_memory.dsp_return_data[0]);
-    if (error_code == ResultSuccess.raw) {
-        out_sample_count = u32(shared_memory.dsp_return_data[1]);
+    auto error_code{static_cast<s32>(shared_memory.dsp_return_data[0])};
+    if (error_code == OPUS_OK) {
+        out_sample_count = static_cast<u32>(shared_memory.dsp_return_data[1]);
        out_time_taken = 1000 * shared_memory.dsp_return_data[2];
    }
-    R_RETURN(Result(u32(error_code)));
+    R_RETURN(ResultCodeFromLibOpusErrorCode(error_code));
 }

 Result HardwareOpus::DecodeInterleavedForMultiStream(u32& out_sample_count, void* output_data,
@@ -166,27 +187,29 @@ Result HardwareOpus::DecodeInterleavedForMultiStream(u32& out_sample_count, void
                                                     void* buffer, u64& out_time_taken,
                                                     bool reset) {
    std::scoped_lock l{mutex};
-    shared_memory.host_send_data[0] = u64(buffer);
-    shared_memory.host_send_data[1] = u64(input_data);
+    shared_memory.host_send_data[0] = (u64)buffer;
+    shared_memory.host_send_data[1] = (u64)input_data;
    shared_memory.host_send_data[2] = input_data_size;
-    shared_memory.host_send_data[3] = u64(output_data);
+    shared_memory.host_send_data[3] = (u64)output_data;
    shared_memory.host_send_data[4] = output_data_size;
    shared_memory.host_send_data[5] = 0;
    shared_memory.host_send_data[6] = reset;

-    opus_decoder.Send(ADSP::Direction::DSP, ADSP::OpusDecoder::Message::DecodeInterleavedForMultiStream);
+    opus_decoder.Send(ADSP::Direction::DSP,
+                      ADSP::OpusDecoder::Message::DecodeInterleavedForMultiStream);
    auto msg = opus_decoder.Receive(ADSP::Direction::Host);
    if (msg != ADSP::OpusDecoder::Message::DecodeInterleavedForMultiStreamOK) {
-        LOG_ERROR(Service_Audio, "OpusDecoder returned invalid message. Expected {} got {}", ADSP::OpusDecoder::Message::DecodeInterleavedForMultiStreamOK, msg);
+        LOG_ERROR(Service_Audio, "OpusDecoder returned invalid message. Expected {} got {}",
+                  ADSP::OpusDecoder::Message::DecodeInterleavedForMultiStreamOK, msg);
        R_THROW(ResultInvalidOpusDSPReturnCode);
    }

-    auto const error_code = shared_memory.dsp_return_data[0];
-    if (error_code == ResultSuccess.raw) {
+    auto error_code{static_cast<s32>(shared_memory.dsp_return_data[0])};
+    if (error_code == OPUS_OK) {
        out_sample_count = static_cast<u32>(shared_memory.dsp_return_data[1]);
        out_time_taken = 1000 * shared_memory.dsp_return_data[2];
    }
-    R_RETURN(Result(u32(shared_memory.dsp_return_data[0])));
+    R_RETURN(ResultCodeFromLibOpusErrorCode(error_code));
 }

 Result HardwareOpus::MapMemory(void* buffer, u64 buffer_size) {
@@ -197,7 +220,8 @@ Result HardwareOpus::MapMemory(void* buffer, u64 buffer_size) {
    opus_decoder.Send(ADSP::Direction::DSP, ADSP::OpusDecoder::Message::MapMemory);
    auto msg = opus_decoder.Receive(ADSP::Direction::Host);
    if (msg != ADSP::OpusDecoder::Message::MapMemoryOK) {
-        LOG_ERROR(Service_Audio, "OpusDecoder returned invalid message. Expected {} got {}", ADSP::OpusDecoder::Message::MapMemoryOK, msg);
+        LOG_ERROR(Service_Audio, "OpusDecoder returned invalid message. Expected {} got {}",
+                  ADSP::OpusDecoder::Message::MapMemoryOK, msg);
        R_THROW(ResultInvalidOpusDSPReturnCode);
    }
    R_SUCCEED();
@@ -211,7 +235,8 @@ Result HardwareOpus::UnmapMemory(void* buffer, u64 buffer_size) {
    opus_decoder.Send(ADSP::Direction::DSP, ADSP::OpusDecoder::Message::UnmapMemory);
    auto msg = opus_decoder.Receive(ADSP::Direction::Host);
    if (msg != ADSP::OpusDecoder::Message::UnmapMemoryOK) {
-        LOG_ERROR(Service_Audio, "OpusDecoder returned invalid message. Expected {} got {}", ADSP::OpusDecoder::Message::UnmapMemoryOK, msg);
+        LOG_ERROR(Service_Audio, "OpusDecoder returned invalid message. Expected {} got {}",
+                  ADSP::OpusDecoder::Message::UnmapMemoryOK, msg);
        R_THROW(ResultInvalidOpusDSPReturnCode);
    }
    R_SUCCEED();
@@ -1,12 +1,11 @@
-// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later

 #pragma once

 #include <mutex>
+#include <opus.h>
+
 #include "audio_core/adsp/apps/opus/opus_decoder.h"
 #include "audio_core/adsp/apps/opus/shared_memory.h"
 #include "audio_core/adsp/mailbox.h"
@@ -1205,6 +1205,7 @@ else()
    endif()
 endif()

+target_include_directories(core PRIVATE ${OPUS_INCLUDE_DIRS})
 target_link_libraries(core PUBLIC common PRIVATE audio_core hid_core network video_core nx_tzdb tz)

 if (BOOST_NO_HEADERS)
@@ -4,6 +4,7 @@
 #include <array>
 #include <atomic>
 #include <memory>
+#include <unordered_map>
 #include <utility>

 #include "game_settings.h"
@@ -16,6 +17,7 @@
 #include "common/string_util.h"
 #include "core/arm/exclusive_monitor.h"
 #include "core/core.h"
+#include "core/file_sys/common_funcs.h"

 #include "launch_timestamp_cache.h"
 #include "core/core_timing.h"
@@ -248,12 +250,30 @@ struct System::Impl {
        }
    }

-    void SetNVDECActive(bool is_nvdec_active) {
-        nvdec_active = is_nvdec_active;
+    void NotifyNVDECChannelOpen(u64 process_id) {
+        std::scoped_lock lock{nvdec_active_mutex};
+        ++nvdec_active_channels[process_id];
+    }
+
+    void NotifyNVDECChannelClose(u64 process_id) {
+        std::scoped_lock lock{nvdec_active_mutex};
+        const auto it = nvdec_active_channels.find(process_id);
+        if (it == nvdec_active_channels.end()) {
+            return;
+        }
+        if (--it->second == 0) {
+            nvdec_active_channels.erase(it);
+        }
    }

    bool GetNVDECActive() {
-        return nvdec_active;
+        std::scoped_lock lock{nvdec_active_mutex};
+        return !nvdec_active_channels.empty();
+    }
+
+    bool IsNVDECActiveForProcess(u64 process_id) {
+        std::scoped_lock lock{nvdec_active_mutex};
+        return nvdec_active_channels.contains(process_id);
    }

    void InitializeDebugger(System& system, u16 port) {
@@ -377,7 +397,7 @@ struct System::Impl {
            LOG_ERROR(Core, "Failed to find program id for ROM");
        }

-        GameSettings::LoadOverrides(program_id, gpu_core->Renderer());
+        GameSettings::LoadOverrides(FileSys::GetBaseTitleID(program_id), gpu_core->Renderer());
        if (auto room_member = Network::GetRoomMember().lock()) {
            Network::GameInfo game_info;
            game_info.name = name;
@@ -505,6 +525,8 @@ struct System::Impl {

    mutable std::mutex suspend_guard;
    std::mutex general_channel_mutex;
+    std::mutex nvdec_active_mutex;
+    std::unordered_map<u64, u32> nvdec_active_channels;
    std::atomic_bool is_paused{};
    std::atomic_bool is_shutting_down{};
    std::atomic_bool is_powered_on{};
@@ -512,7 +534,6 @@ struct System::Impl {
    bool extended_memory_layout : 1 = false;
    bool exit_locked : 1 = false;
    bool exit_requested : 1 = false;
-    bool nvdec_active : 1 = false;

    void EnsureGeneralChannelInitialized(System& system) {
        if (!general_channel_event) {
@@ -576,14 +597,22 @@ void System::UnstallApplication() {
    impl->UnstallApplication();
 }

-void System::SetNVDECActive(bool is_nvdec_active) {
-    impl->SetNVDECActive(is_nvdec_active);
+void System::NotifyNVDECChannelOpen(u64 process_id) {
+    impl->NotifyNVDECChannelOpen(process_id);
+}
+
+void System::NotifyNVDECChannelClose(u64 process_id) {
+    impl->NotifyNVDECChannelClose(process_id);
 }

 bool System::GetNVDECActive() {
    return impl->GetNVDECActive();
 }

+bool System::IsNVDECActiveForProcess(u64 process_id) {
+    return impl->IsNVDECActiveForProcess(process_id);
+}
+
 void System::InitializeDebugger() {
    impl->InitializeDebugger(*this, Settings::values.gdbstub_port.GetValue());
 }
@@ -191,8 +191,10 @@ public:
    std::unique_lock<std::mutex> StallApplication();
    void UnstallApplication();

-    void SetNVDECActive(bool is_nvdec_active);
+    void NotifyNVDECChannelOpen(u64 process_id);
+    void NotifyNVDECChannelClose(u64 process_id);
    [[nodiscard]] bool GetNVDECActive();
+    [[nodiscard]] bool IsNVDECActiveForProcess(u64 process_id);

    /**
     * Initialize the debugger.
@@ -161,7 +161,7 @@ std::string GetUpdateVersionStringFromSlot(const ContentProvider* provider, u64
 PatchManager::PatchManager(u64 title_id_,
                           const Service::FileSystem::FileSystemController& fs_controller_,
                           const ContentProvider& content_provider_)
-    : title_id{title_id_}, fs_controller{fs_controller_}, content_provider{content_provider_} {}
+    : title_id{title_id_}, application_id{GetBaseTitleID(title_id_)}, fs_controller{fs_controller_}, content_provider{content_provider_} {}

 PatchManager::~PatchManager() = default;

@@ -169,13 +169,41 @@ u64 PatchManager::GetTitleID() const {
    return title_id;
 }

+u64 PatchManager::GetUpdateTitleIDForContent() const {
+    const auto program_update_id = GetUpdateTitleID(title_id);
+    if (program_update_id == GetUpdateTitleID(application_id) || content_provider.HasEntry(program_update_id, ContentRecordType::Program)) {
+        return program_update_id;
+    }
+    return GetUpdateTitleID(application_id);
+}
+
+std::vector<VirtualDir> PatchManager::GetModificationLoadRoots() const {
+    std::vector<VirtualDir> roots;
+    roots.push_back(fs_controller.GetModificationLoadRoot(title_id));
+    if (application_id != title_id) {
+        roots.push_back(fs_controller.GetModificationLoadRoot(application_id));
+    }
+    std::erase(roots, nullptr);
+    return roots;
+}
+
+std::vector<VirtualDir> PatchManager::GetSDMCModificationLoadRoots() const {
+    std::vector<VirtualDir> roots;
+    roots.push_back(fs_controller.GetSDMCModificationLoadRoot(title_id));
+    if (application_id != title_id) {
+        roots.push_back(fs_controller.GetSDMCModificationLoadRoot(application_id));
+    }
+    std::erase(roots, nullptr);
+    return roots;
+}
+
 VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const {
    LOG_INFO(Loader, "Patching ExeFS for title_id={:016X}", title_id);

    if (exefs == nullptr)
        return exefs;

-    const auto& disabled = Settings::values.disabled_addons[title_id];
+    const auto& disabled = Settings::values.disabled_addons[application_id];

    bool update_disabled = true;
    std::optional<u32> enabled_version;
@@ -183,7 +211,7 @@ VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const {
    bool checked_manual = false;

    const auto* content_union = static_cast<const ContentProviderUnion*>(&content_provider);
-    const auto update_tid = GetUpdateTitleID(title_id);
+    const auto update_tid = GetUpdateTitleIDForContent();

    if (content_union) {
        // First, check ExternalContentProvider
@@ -303,17 +331,21 @@ VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const {
    }

    // LayeredExeFS
-    const auto load_dir = fs_controller.GetModificationLoadRoot(title_id);
-    const auto sdmc_load_dir = fs_controller.GetSDMCModificationLoadRoot(title_id);
+    const auto load_dirs = GetModificationLoadRoots();
+    const auto sdmc_load_dirs = GetSDMCModificationLoadRoots();

-    std::vector<VirtualDir> patch_dirs = {sdmc_load_dir};
-    if (load_dir != nullptr) {
+    std::vector<VirtualDir> patch_dirs;
+    for (const auto& sdmc_load_dir : sdmc_load_dirs) {
+        patch_dirs.push_back(sdmc_load_dir);
+    }
+    for (const auto& load_dir : load_dirs) {
        const auto load_patch_dirs = load_dir->GetSubdirectories();
        patch_dirs.insert(patch_dirs.end(), load_patch_dirs.begin(), load_patch_dirs.end());
    }

-    std::sort(patch_dirs.begin(), patch_dirs.end(),
-              [](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
+    std::stable_sort(patch_dirs.begin(), patch_dirs.end(), [](const VirtualDir& l, const VirtualDir& r) {
+        return l->GetName() < r->GetName();
+    });

    std::vector<VirtualDir> layers;
    layers.reserve(patch_dirs.size() + 1);
@@ -347,7 +379,7 @@ VirtualDir PatchManager::PatchExeFS(VirtualDir exefs) const {

 std::vector<VirtualFile> PatchManager::CollectPatches(const std::vector<VirtualDir>& patch_dirs,
                                                      const std::string& build_id) const {
-    const auto& disabled = Settings::values.disabled_addons[title_id];
+    const auto& disabled = Settings::values.disabled_addons[application_id];
    const auto nso_build_id = fmt::format("{:0<64}", build_id);

    std::vector<VirtualFile> out;
@@ -412,15 +444,20 @@ std::vector<u8> PatchManager::PatchNSO(const std::vector<u8>& nso, const std::st

    LOG_INFO(Loader, "Patching NSO for name={}, build_id={}", name, build_id);

-    const auto load_dir = fs_controller.GetModificationLoadRoot(title_id);
-    if (load_dir == nullptr) {
+    const auto load_dirs = GetModificationLoadRoots();
+    if (load_dirs.empty()) {
        LOG_ERROR(Loader, "Cannot load mods for invalid title_id={:016X}", title_id);
        return nso;
    }

-    auto patch_dirs = load_dir->GetSubdirectories();
-    std::sort(patch_dirs.begin(), patch_dirs.end(),
-              [](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
+    std::vector<VirtualDir> patch_dirs;
+    for (const auto& load_dir : load_dirs) {
+        const auto load_patch_dirs = load_dir->GetSubdirectories();
+        patch_dirs.insert(patch_dirs.end(), load_patch_dirs.begin(), load_patch_dirs.end());
+    }
+    std::stable_sort(patch_dirs.begin(), patch_dirs.end(), [](const VirtualDir& l, const VirtualDir& r) {
+        return l->GetName() < r->GetName();
+    });
    const auto patches = CollectPatches(patch_dirs, build_id);

    auto out = nso;
@@ -455,29 +492,39 @@ bool PatchManager::HasNSOPatch(const BuildID& build_id_, std::string_view name)

    LOG_INFO(Loader, "Querying NSO patch existence for build_id={}, name={}", build_id, name);

-    const auto load_dir = fs_controller.GetModificationLoadRoot(title_id);
-    if (load_dir == nullptr) {
+    const auto load_dirs = GetModificationLoadRoots();
+    if (load_dirs.empty()) {
        LOG_ERROR(Loader, "Cannot load mods for invalid title_id={:016X}", title_id);
        return false;
    }

-    auto patch_dirs = load_dir->GetSubdirectories();
-    std::sort(patch_dirs.begin(), patch_dirs.end(),
-              [](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
+    std::vector<VirtualDir> patch_dirs;
+    for (const auto& load_dir : load_dirs) {
+        const auto load_patch_dirs = load_dir->GetSubdirectories();
+        patch_dirs.insert(patch_dirs.end(), load_patch_dirs.begin(), load_patch_dirs.end());
+    }
+    std::stable_sort(patch_dirs.begin(), patch_dirs.end(), [](const VirtualDir& l, const VirtualDir& r) {
+        return l->GetName() < r->GetName();
+    });

    return !CollectPatches(patch_dirs, build_id).empty();
 }

 std::vector<Core::Memory::CheatEntry> PatchManager::CreateCheatList(const BuildID& build_id_) const {
-    const auto load_dir = fs_controller.GetModificationLoadRoot(title_id);
-    if (load_dir == nullptr) {
+    const auto load_dirs = GetModificationLoadRoots();
+    if (load_dirs.empty()) {
        LOG_ERROR(Loader, "Cannot load mods for invalid title_id={:016X}", title_id);
        return {};
    }

-    const auto& disabled = Settings::values.disabled_addons[title_id];
-    auto patch_dirs = load_dir->GetSubdirectories();
-    std::sort(patch_dirs.begin(), patch_dirs.end(), [](auto const& l, auto const& r) { return l->GetName() < r->GetName(); });
+    const auto& disabled = Settings::values.disabled_addons[application_id];
+    std::vector<VirtualDir> patch_dirs;
+    for (const auto& load_dir : load_dirs) {
+        const auto load_patch_dirs = load_dir->GetSubdirectories();
+        patch_dirs.insert(patch_dirs.end(), load_patch_dirs.begin(), load_patch_dirs.end());
+    }
+    std::stable_sort(patch_dirs.begin(), patch_dirs.end(),
+                     [](auto const& l, auto const& r) { return l->GetName() < r->GetName(); });

    // <mod dir> / <folder> / cheats / <build id>.txt
    std::vector<Core::Memory::CheatEntry> out;
@@ -493,39 +540,52 @@ std::vector<Core::Memory::CheatEntry> PatchManager::CreateCheatList(const BuildI
    }
    // Uncareless user-friendly loading of patches (must start with 'cheat_')
    // <mod dir> / <cheat file>.txt
-    for (auto const& f : load_dir->GetFiles()) {
-        auto const name = f->GetName();
-        if (name.starts_with("cheat_") && std::find(disabled.cbegin(), disabled.cend(), name) == disabled.cend()) {
-            std::vector<u8> data(f->GetSize());
-            if (f->Read(data.data(), data.size()) == data.size()) {
-                const Core::Memory::TextCheatParser parser;
-                auto const res = parser.Parse(std::string_view(reinterpret_cast<const char*>(data.data()), data.size()));
-                std::copy(res.begin(), res.end(), std::back_inserter(out));
-            } else {
-                LOG_INFO(Common_Filesystem, "Failed to read cheats file for title_id={:016X}", title_id);
+    for (const auto& load_dir : load_dirs) {
+        for (auto const& f : load_dir->GetFiles()) {
+            auto const name = f->GetName();
+            if (name.starts_with("cheat_") && std::find(disabled.cbegin(), disabled.cend(), name) == disabled.cend()) {
+                std::vector<u8> data(f->GetSize());
+                if (f->Read(data.data(), data.size()) == data.size()) {
+                    const Core::Memory::TextCheatParser parser;
+                    auto const res = parser.Parse(std::string_view(reinterpret_cast<const char*>(data.data()), data.size()));
+                    std::copy(res.begin(), res.end(), std::back_inserter(out));
+                } else {
+                    LOG_INFO(Common_Filesystem, "Failed to read cheats file for title_id={:016X}", title_id);
+                }
            }
        }
    }
    return out;
 }

-static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, ContentRecordType type,
+static void ApplyLayeredFS(VirtualFile& romfs, u64 title_id, u64 application_id, ContentRecordType type,
                           const Service::FileSystem::FileSystemController& fs_controller) {
-    const auto load_dir = fs_controller.GetModificationLoadRoot(title_id);
-    const auto sdmc_load_dir = fs_controller.GetSDMCModificationLoadRoot(title_id);
+    std::vector<VirtualDir> load_dirs{fs_controller.GetModificationLoadRoot(title_id)};
+    std::vector<VirtualDir> sdmc_load_dirs{fs_controller.GetSDMCModificationLoadRoot(title_id)};
+    if (application_id != title_id) {
+        load_dirs.push_back(fs_controller.GetModificationLoadRoot(application_id));
+        sdmc_load_dirs.push_back(fs_controller.GetSDMCModificationLoadRoot(application_id));
+    }
+    std::erase(load_dirs, nullptr);
+    std::erase(sdmc_load_dirs, nullptr);
    if ((type != ContentRecordType::Program && type != ContentRecordType::Data &&
         type != ContentRecordType::HtmlDocument) ||
-        (load_dir == nullptr && sdmc_load_dir == nullptr)) {
+        (load_dirs.empty() && sdmc_load_dirs.empty())) {
        return;
    }

-    const auto& disabled = Settings::values.disabled_addons[title_id];
-    std::vector<VirtualDir> patch_dirs = load_dir->GetSubdirectories();
-    if (std::find(disabled.cbegin(), disabled.cend(), "SDMC") == disabled.cend()) {
-        patch_dirs.push_back(sdmc_load_dir);
+    const auto& disabled = Settings::values.disabled_addons[application_id];
+    std::vector<VirtualDir> patch_dirs;
+    for (const auto& load_dir : load_dirs) {
+        const auto load_patch_dirs = load_dir->GetSubdirectories();
+        patch_dirs.insert(patch_dirs.end(), load_patch_dirs.begin(), load_patch_dirs.end());
    }
-    std::sort(patch_dirs.begin(), patch_dirs.end(),
-              [](const VirtualDir& l, const VirtualDir& r) { return l->GetName() < r->GetName(); });
+    if (std::find(disabled.cbegin(), disabled.cend(), "SDMC") == disabled.cend()) {
+        patch_dirs.insert(patch_dirs.end(), sdmc_load_dirs.begin(), sdmc_load_dirs.end());
+    }
+    std::stable_sort(patch_dirs.begin(), patch_dirs.end(), [](const VirtualDir& l, const VirtualDir& r) {
+        return l->GetName() < r->GetName();
+    });

    std::vector<VirtualDir> layers;
    std::vector<VirtualDir> layers_ext;
@@ -597,8 +657,8 @@ VirtualFile PatchManager::PatchRomFS(const NCA* base_nca, VirtualFile base_romfs
    auto romfs = base_romfs;

    // Game Updates
-    const auto update_tid = GetUpdateTitleID(title_id);
-    const auto& disabled = Settings::values.disabled_addons[title_id];
+    const auto update_tid = GetUpdateTitleIDForContent();
+    const auto& disabled = Settings::values.disabled_addons[application_id];

    bool update_disabled = true;
    std::optional<u32> enabled_version;
@@ -705,7 +765,7 @@ VirtualFile PatchManager::PatchRomFS(const NCA* base_nca, VirtualFile base_romfs

    // LayeredFS
    if (apply_layeredfs) {
-        ApplyLayeredFS(romfs, title_id, type, fs_controller);
+        ApplyLayeredFS(romfs, title_id, application_id, type, fs_controller);
    }

    return romfs;
@@ -717,10 +777,10 @@ std::vector<Patch> PatchManager::GetPatches(VirtualFile update_raw) const {
    }

    std::vector<Patch> out;
-    const auto& disabled = Settings::values.disabled_addons[title_id];
+    const auto& disabled = Settings::values.disabled_addons[application_id];

    // Game Updates
-    const auto update_tid = GetUpdateTitleID(title_id);
+    const auto update_tid = GetUpdateTitleIDForContent();

    std::vector<Patch> external_update_patches;

@@ -869,7 +929,7 @@ std::vector<Patch> PatchManager::GetPatches(VirtualFile update_raw) const {
                              .version = "",
                              .type = PatchType::Update,
                              .program_id = title_id,
-                              .title_id = title_id,
+                              .title_id = update_tid,
                              .source = PatchSource::Unknown,
                              .numeric_version = 0};

@@ -895,8 +955,7 @@ std::vector<Patch> PatchManager::GetPatches(VirtualFile update_raw) const {
    }

    // General Mods (LayeredFS and IPS)
-    const auto mod_dir = fs_controller.GetModificationLoadRoot(title_id);
-    if (mod_dir != nullptr) {
+    for (const auto& mod_dir : GetModificationLoadRoots()) {
        for (auto const& f : mod_dir->GetFiles())
            if (auto const name = f->GetName(); name.starts_with("cheat_")) {
                auto const mod_disabled = std::find(disabled.begin(), disabled.end(), name) != disabled.end();
@@ -963,8 +1022,7 @@ std::vector<Patch> PatchManager::GetPatches(VirtualFile update_raw) const {
    }

    // SDMC mod directory (RomFS LayeredFS)
-    const auto sdmc_mod_dir = fs_controller.GetSDMCModificationLoadRoot(title_id);
-    if (sdmc_mod_dir != nullptr) {
+    for (const auto& sdmc_mod_dir : GetSDMCModificationLoadRoots()) {
        std::string types;
        if (IsDirValidAndNonEmpty(FindSubdirectoryCaseless(sdmc_mod_dir, "exefs")))
            AppendCommaIfNotEmpty(types, "LayeredExeFS");
@@ -999,10 +1057,10 @@ std::vector<Patch> PatchManager::GetPatches(VirtualFile update_raw) const {
    dlc_match.reserve(dlc_entries_with_origin.size());
    for (const auto& [slot, entry] : dlc_entries_with_origin) {
        const auto base_tid = GetBaseTitleID(entry.title_id);
-        const bool matches_base = base_tid == title_id;
+        const bool matches_base = base_tid == application_id;
        if (!matches_base) {
            LOG_DEBUG(Loader, "DLC {:016X} base {:016X} doesn't match title {:016X}",
-                      entry.title_id, base_tid, title_id);
+                      entry.title_id, base_tid, application_id);
            continue;
        }

@@ -1077,16 +1135,22 @@ std::vector<Patch> PatchManager::GetPatches(VirtualFile update_raw) const {
 }

 std::optional<u32> PatchManager::GetGameVersion() const {
-    const auto update_tid = GetUpdateTitleID(title_id);
+    const auto update_tid = GetUpdateTitleIDForContent();
    if (content_provider.HasEntry(update_tid, ContentRecordType::Program)) {
        return content_provider.GetEntryVersion(update_tid);
    }

-    return content_provider.GetEntryVersion(title_id);
+    if (const auto version = content_provider.GetEntryVersion(title_id); version.has_value()) {
+        return version;
+    }
+    return content_provider.GetEntryVersion(application_id);
 }

 PatchManager::Metadata PatchManager::GetControlMetadata() const {
-    const auto base_control_nca = content_provider.GetEntry(title_id, ContentRecordType::Control);
+    auto base_control_nca = content_provider.GetEntry(title_id, ContentRecordType::Control);
+    if (base_control_nca == nullptr && application_id != title_id) {
+        base_control_nca = content_provider.GetEntry(application_id, ContentRecordType::Control);
+    }
    if (base_control_nca == nullptr) {
        return {};
    }
@@ -1162,8 +1226,14 @@ PatchManager::Metadata PatchManager::ParseControlNCA(const NCA& nca) const {
    auto metadata = pm.GetControlMetadata();
    if (metadata.first != nullptr)
        return metadata;
-    const FileSys::PatchManager pm_update{FileSys::GetUpdateTitleID(application_id), system.GetFileSystemController(), system.GetContentProvider()};
-    return pm_update.GetControlMetadata();
+    const auto update_id = FileSys::GetUpdateTitleID(application_id);
+    const auto application_update_id = FileSys::GetUpdateTitleID(GetBaseTitleID(application_id));
+    const FileSys::PatchManager pm_update{update_id, system.GetFileSystemController(), system.GetContentProvider()};
+    metadata = pm_update.GetControlMetadata();
+    if (metadata.first != nullptr || update_id == application_update_id)
+        return metadata;
+    const FileSys::PatchManager pm_application_update{application_update_id, system.GetFileSystemController(), system.GetContentProvider()};
+    return pm_application_update.GetControlMetadata();
 }

 } // namespace FileSys
@@ -10,6 +10,7 @@
 #include <memory>
 #include <optional>
 #include <string>
+#include <vector>
 #include "common/common_types.h"
 #include "core/file_sys/nca_metadata.h"
 #include "core/file_sys/vfs/vfs_types.h"
@@ -109,10 +110,14 @@ public:
    [[nodiscard]] static PatchManager::Metadata GetMetadataFromBaseOrUpdate(Core::System& system, u64 application_id) noexcept;

 private:
+    [[nodiscard]] u64 GetUpdateTitleIDForContent() const;
+    [[nodiscard]] std::vector<VirtualDir> GetModificationLoadRoots() const;
+    [[nodiscard]] std::vector<VirtualDir> GetSDMCModificationLoadRoots() const;
    [[nodiscard]] std::vector<VirtualFile> CollectPatches(const std::vector<VirtualDir>& patch_dirs,
                                                          const std::string& build_id) const;

    u64 title_id;
+    u64 application_id;
    const Service::FileSystem::FileSystemController& fs_controller;
    const ContentProvider& content_provider;
 };
@@ -6,6 +6,7 @@

 #include <optional>
 #include "core/core.h"
+#include "core/file_sys/common_funcs.h"
 #include "core/file_sys/content_archive.h"
 #include "core/file_sys/nca_metadata.h"
 #include "core/file_sys/patch_manager.h"
@@ -104,8 +105,16 @@ std::unique_ptr<Process> CreateApplicationProcess(std::vector<u8>& out_control,

        // TODO(DarkLordZach): When FSController/Game Card Support is added, if
        // current_process_game_card use correct StorageId
-        launch.base_game_storage_id = GetStorageIdForFrontendSlot(storage.GetSlotForEntry(launch.title_id, FileSys::ContentRecordType::Program));
-        launch.update_storage_id = GetStorageIdForFrontendSlot(storage.GetSlotForEntry(FileSys::GetUpdateTitleID(launch.title_id), FileSys::ContentRecordType::Program));
+        auto base_slot = storage.GetSlotForEntry(launch.title_id, FileSys::ContentRecordType::Program);
+        if (!base_slot) {
+            base_slot = storage.GetSlotForEntry(FileSys::GetBaseTitleID(launch.title_id), FileSys::ContentRecordType::Program);
+        }
+        launch.base_game_storage_id = GetStorageIdForFrontendSlot(base_slot);
+        auto update_slot = storage.GetSlotForEntry(FileSys::GetUpdateTitleID(launch.title_id), FileSys::ContentRecordType::Program);
+        if (!update_slot) {
+            update_slot = storage.GetSlotForEntry(FileSys::GetUpdateTitleID(FileSys::GetBaseTitleID(launch.title_id)), FileSys::ContentRecordType::Program);
+        }
+        launch.update_storage_id = GetStorageIdForFrontendSlot(update_slot);

        system.GetARPManager().Register(launch.title_id, launch, out_control);
        return process;
@@ -158,7 +158,7 @@ Result IApplicationFunctions::EnsureSaveData(Out<u64> out_size, Common::UUID use
    LOG_INFO(Service_AM, "called, uid={}", user_id.FormattedString());

    FileSys::SaveDataAttribute attribute{};
-    attribute.program_id = m_applet->program_id;
+    attribute.program_id = FileSys::GetBaseTitleID(m_applet->program_id);
    attribute.user_id = user_id.AsU128();
    attribute.type = FileSys::SaveDataType::Account;

@@ -238,7 +238,7 @@ Result IApplicationFunctions::ExtendSaveData(Out<u64> out_required_size, FileSys
              static_cast<u8>(type), user_id.FormattedString(), normal_size, journal_size);

    system.GetFileSystemController().OpenSaveDataController()->WriteSaveDataSize(
-        type, m_applet->program_id, user_id.AsU128(), {normal_size, journal_size});
+        type, FileSys::GetBaseTitleID(m_applet->program_id), user_id.AsU128(), {normal_size, journal_size});

    // The following value is used to indicate the amount of space remaining on failure
    // due to running out of space. Since we always succeed, this should be 0.
@@ -252,7 +252,7 @@ Result IApplicationFunctions::GetSaveDataSize(Out<u64> out_normal_size, Out<u64>
    LOG_DEBUG(Service_AM, "called with type={} user_id={}", type, user_id.FormattedString());

    const auto size = system.GetFileSystemController().OpenSaveDataController()->ReadSaveDataSize(
-        type, m_applet->program_id, user_id.AsU128());
+        type, FileSys::GetBaseTitleID(m_applet->program_id), user_id.AsU128());

    *out_normal_size = size.normal;
    *out_journal_size = size.journal;
@@ -14,6 +14,7 @@
 #include "core/core.h"
 #include "core/file_sys/bis_factory.h"
 #include "core/file_sys/card_image.h"
+#include "core/file_sys/common_funcs.h"
 #include "core/file_sys/control_metadata.h"
 #include "core/file_sys/errors.h"
 #include "core/file_sys/patch_manager.h"
@@ -339,7 +340,7 @@ Result FileSystemController::RegisterProcess(
    registrations.emplace(process_id, Registration{
                                          .program_id = program_id,
                                          .romfs_factory = std::move(romfs_factory),
-                                          .save_data_factory = CreateSaveDataFactory(program_id),
+                                          .save_data_factory = CreateSaveDataFactory(FileSys::GetBaseTitleID(program_id)),
                                      });

    LOG_DEBUG(Service_FS, "Registered for process {}", process_id);
@@ -18,6 +18,7 @@
 #include "common/settings.h"
 #include "common/string_util.h"
 #include "core/core.h"
+#include "core/file_sys/common_funcs.h"
 #include "core/file_sys/content_archive.h"
 #include "core/file_sys/errors.h"
 #include "core/file_sys/fs_directory.h"
@@ -313,7 +314,7 @@ Result FSP_SRV::OpenSaveDataFileSystemBySystemSaveDataId(OutInterface<IFileSyste
             FileSys::ResultInvalidArgument);

    if (attribute.program_id == 0) {
-        attribute.program_id = program_id;
+        attribute.program_id = FileSys::GetBaseTitleID(program_id);
    }

    FileSys::VirtualDir dir{};
@@ -8,6 +8,7 @@
 #include "common/assert.h"
 #include "common/logging.h"
 #include "core/core.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/service/nvdrv/core/container.h"
 #include "core/hle/service/nvdrv/devices/ioctl_serialization.h"
 #include "core/hle/service/nvdrv/devices/nvhost_nvdec.h"
@@ -71,17 +72,23 @@ NvResult nvhost_nvdec::Ioctl3(DeviceFD fd, Ioctl command, std::span<const u8> in

 void nvhost_nvdec::OnOpen(NvCore::SessionId session_id, DeviceFD fd) {
    LOG_INFO(Service_NVDRV, "NVDEC video stream started");
-    system.SetNVDECActive(true);
    sessions[fd] = session_id;
+    if (const auto* session = core.GetSession(session_id);
+        session != nullptr && session->process != nullptr) {
+        system.NotifyNVDECChannelOpen(session->process->GetId());
+    }
    host1x.StartDevice(fd, Tegra::Host1x::ChannelType::NvDec, channel_syncpoint);
 }

 void nvhost_nvdec::OnClose(DeviceFD fd) {
    LOG_INFO(Service_NVDRV, "NVDEC video stream ended");
    host1x.StopDevice(fd, Tegra::Host1x::ChannelType::NvDec);
-    system.SetNVDECActive(false);
    auto it = sessions.find(fd);
    if (it != sessions.end()) {
+        if (const auto* session = core.GetSession(it->second);
+            session != nullptr && session->process != nullptr) {
+            system.NotifyNVDECChannelClose(session->process->GetId());
+        }
        sessions.erase(it);
    }
 }
@@ -4,12 +4,16 @@
 // SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later

+#include <chrono>
 #include <fmt/ranges.h>
+#include <string_view>
+#include <thread>
 #include "common/assert.h"
 #include "common/logging.h"
 #include "common/settings.h"
 #include "core/core.h"
 #include "core/hle/ipc.h"
+#include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/service/ipc_helpers.h"
 #include "core/hle/service/service.h"
@@ -33,6 +37,7 @@ ServiceFrameworkBase::ServiceFrameworkBase(Core::System& system_, const char* se
    : SessionRequestHandler(system_.Kernel(), service_name_)
    , system{system_}
    , service_name{service_name_}
+    , is_i_storage{std::string_view{service_name_} == "IStorage"}
    , handler_invoker{handler_invoker_}
    , max_sessions{max_sessions_}
 {}
@@ -77,13 +82,22 @@ void ServiceFrameworkBase::ReportUnimplementedFunction(HLERequestContext& ctx,
 }

 void ServiceFrameworkBase::InvokeRequest(HLERequestContext& ctx) {
-    auto it = handlers.find(ctx.GetCommand());
+    const auto command = ctx.GetCommand();
+    auto it = handlers.find(command);
+    const bool is_cmd_read = command == 0;
    FunctionInfoBase const* info = it == handlers.end() ? nullptr : &it->second;
    if (info == nullptr || info->handler_callback == nullptr)
        return ReportUnimplementedFunction(ctx, info);

    LOG_TRACE(Service, "{}", MakeFunctionString(info->name, GetServiceName(), ctx.CommandBuffer()));
    handler_invoker(this, info->handler_callback, ctx);
+
+    if (is_i_storage && is_cmd_read) {
+        const auto* const process = ctx.GetThread().GetOwnerProcess();
+        if (process != nullptr && system.IsNVDECActiveForProcess(process->GetId())) {
+            std::this_thread::sleep_for(std::chrono::microseconds{600});
+        }
+    }
 }

 void ServiceFrameworkBase::InvokeRequestTipc(HLERequestContext& ctx) {
@@ -107,6 +107,8 @@ protected:
    Core::System& system;
    /// Identifier string used to connect to the service.
    const char* service_name;
+    /// Whether this is the IStorage service.
+    const bool is_i_storage;
    /// Function used to safely up-cast pointers to the derived class before invoking a handler.
    InvokerFn* handler_invoker;
    /// Maximum number of concurrent sessions that this service can handle.
@@ -70,6 +70,15 @@ std::optional<IndexedProgram> ResolveIndexedProgram(Core::System& system, u64 pr
        return IndexedProgram{std::move(update), target_id, true};
    }

+    const auto application_update_id =
+        FileSys::GetUpdateTitleID(FileSys::GetBaseTitleID(target_id));
+    if (application_update_id != update_id) {
+        if (auto update = provider.GetEntryRaw(application_update_id, FileSys::ContentRecordType::Program)) {
+            LOG_INFO(Loader, "Program index {} has no base program, loading it from application update {:016X}", program_index, application_update_id);
+            return IndexedProgram{std::move(update), target_id, true};
+        }
+    }
+
    LOG_WARNING(Loader, "No program NCA for {:016X} (index {}), falling back to the container",
                target_id, program_index);
    return std::nullopt;
@@ -11,6 +11,7 @@
 #include "common/hex_util.h"
 #include "common/scope_exit.h"
 #include "core/core.h"
+#include "core/file_sys/common_funcs.h"
 #include "core/file_sys/content_archive.h"
 #include "core/file_sys/control_metadata.h"
 #include "core/file_sys/nca_metadata.h"
@@ -76,8 +77,13 @@ AppLoader_NCA::LoadResult AppLoader_NCA::Load(Kernel::KProcess& process, Core::S
        LOG_INFO(Loader, "No ExeFS found in NCA, looking for ExeFS from update");

        const auto& installed = system.GetContentProvider();
-        const auto update_nca = installed.GetEntry(FileSys::GetUpdateTitleID(nca->GetTitleId()),
-                                                   FileSys::ContentRecordType::Program);
+        const auto program_update_id = FileSys::GetUpdateTitleID(nca->GetTitleId());
+        auto update_nca = installed.GetEntry(program_update_id, FileSys::ContentRecordType::Program);
+        if (update_nca == nullptr) {
+            update_nca = installed.GetEntry(
+                FileSys::GetUpdateTitleID(FileSys::GetBaseTitleID(nca->GetTitleId())),
+                FileSys::ContentRecordType::Program);
+        }

        if (update_nca) {
            exefs = update_nca->GetExeFS();
@@ -186,8 +186,13 @@ ResultStatus AppLoader_NSP::ReadUpdateRaw(FileSys::VirtualFile& out_file) {
        return ResultStatus::ErrorNoPackedUpdate;
    }

-    const auto read = nsp->GetNCAFile(FileSys::GetUpdateTitleID(nsp->GetProgramTitleID()),
-                                      FileSys::ContentRecordType::Program);
+    const auto program_update_id = FileSys::GetUpdateTitleID(nsp->GetProgramTitleID());
+    auto read = nsp->GetNCAFile(program_update_id, FileSys::ContentRecordType::Program);
+    if (read == nullptr) {
+        read = nsp->GetNCAFile(
+            FileSys::GetUpdateTitleID(FileSys::GetBaseTitleID(nsp->GetProgramTitleID())),
+            FileSys::ContentRecordType::Program);
+    }

    if (read == nullptr) {
        return ResultStatus::ErrorNoPackedUpdate;
@@ -9,6 +9,7 @@
 #include "common/common_types.h"
 #include "core/core.h"
 #include "core/file_sys/card_image.h"
+#include "core/file_sys/common_funcs.h"
 #include "core/file_sys/content_archive.h"
 #include "core/file_sys/control_metadata.h"
 #include "core/file_sys/patch_manager.h"
@@ -137,8 +138,13 @@ ResultStatus AppLoader_XCI::ReadUpdateRaw(FileSys::VirtualFile& out_file) {
        return ResultStatus::ErrorXCIMissingProgramNCA;
    }

-    const auto read = xci->GetSecurePartitionNSP()->GetNCAFile(
-        FileSys::GetUpdateTitleID(program_id), FileSys::ContentRecordType::Program);
+    const auto program_update_id = FileSys::GetUpdateTitleID(program_id);
+    auto read = xci->GetSecurePartitionNSP()->GetNCAFile(program_update_id, FileSys::ContentRecordType::Program);
+    if (read == nullptr) {
+        read = xci->GetSecurePartitionNSP()->GetNCAFile(
+            FileSys::GetUpdateTitleID(FileSys::GetBaseTitleID(program_id)),
+            FileSys::ContentRecordType::Program);
+    }
    if (read == nullptr) {
        return ResultStatus::ErrorNoPackedUpdate;
    }
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later

 // SPDX-FileCopyrightText: 2024 yuzu Emulator Project
@@ -56,13 +56,14 @@ inline bool RemoveDLC(const Service::FileSystem::FileSystemController& fs_contro
 */
 inline size_t RemoveAllDLC(Core::System& system, const u64 program_id) {
    size_t count{};
+    const auto application_id = FileSys::GetBaseTitleID(program_id);
    const auto& fs_controller = system.GetFileSystemController();
    const auto dlc_entries = system.GetContentProvider().ListEntriesFilter(
        FileSys::TitleType::AOC, FileSys::ContentRecordType::Data);
    std::vector<u64> program_dlc_entries;

    for (const auto& entry : dlc_entries) {
-        if (FileSys::GetBaseTitleID(entry.title_id) == program_id) {
+        if (FileSys::GetBaseTitleID(entry.title_id) == application_id) {
            program_dlc_entries.push_back(entry.title_id);
        }
    }
@@ -83,9 +84,17 @@ inline size_t RemoveAllDLC(Core::System& system, const u64 program_id) {
 */
 inline bool RemoveUpdate(const Service::FileSystem::FileSystemController& fs_controller,
                         const u64 program_id) {
-    const auto update_id = program_id | 0x800;
-    return fs_controller.GetUserNANDContents()->RemoveExistingEntry(update_id) ||
-           fs_controller.GetSDMCContents()->RemoveExistingEntry(update_id);
+    const auto remove_update = [&fs_controller](u64 update_id) {
+        return fs_controller.GetUserNANDContents()->RemoveExistingEntry(update_id) ||
+               fs_controller.GetSDMCContents()->RemoveExistingEntry(update_id);
+    };
+    const auto update_id = FileSys::GetUpdateTitleID(program_id);
+    const auto application_update_id =
+        FileSys::GetUpdateTitleID(FileSys::GetBaseTitleID(program_id));
+    if (update_id != application_update_id && remove_update(update_id)) {
+        return true;
+    }
+    return remove_update(application_update_id);
 }

 /**
@@ -111,15 +120,26 @@ inline bool RemoveBaseContent(const Service::FileSystem::FileSystemController& f
 inline bool RemoveMod(const Service::FileSystem::FileSystemController& fs_controller,
                      const u64 program_id, const std::string& mod_name) {
    // Check general Mods (LayeredFS and IPS)
-    const auto mod_dir = fs_controller.GetModificationLoadRoot(program_id);
-    if (mod_dir != nullptr) {
-        return mod_dir->DeleteSubdirectoryRecursive(mod_name);
+    const auto remove_from_root = [&mod_name](const auto& root) {
+        return root != nullptr && root->DeleteSubdirectoryRecursive(mod_name);
+    };
+    if (remove_from_root(fs_controller.GetModificationLoadRoot(program_id))) {
+        return true;
+    }
+    if (FileSys::GetBaseTitleID(program_id) != program_id &&
+        remove_from_root(
+            fs_controller.GetModificationLoadRoot(FileSys::GetBaseTitleID(program_id)))) {
+        return true;
    }

    // Check SDMC mod directory (RomFS LayeredFS)
-    const auto sdmc_mod_dir = fs_controller.GetSDMCModificationLoadRoot(program_id);
-    if (sdmc_mod_dir != nullptr) {
-        return sdmc_mod_dir->DeleteSubdirectoryRecursive(mod_name);
+    if (remove_from_root(fs_controller.GetSDMCModificationLoadRoot(program_id))) {
+        return true;
+    }
+    if (FileSys::GetBaseTitleID(program_id) != program_id &&
+        remove_from_root(
+            fs_controller.GetSDMCModificationLoadRoot(FileSys::GetBaseTitleID(program_id)))) {
+        return true;
    }

    return false;
@@ -7,6 +7,7 @@
 #include "common/fs/fs.h"
 #include "common/fs/fs_types.h"
 #include "common/logging.h"
+#include "core/file_sys/common_funcs.h"
 #include "frontend_common/data_manager.h"
 #include "mod_manager.h"

@@ -40,7 +41,7 @@ std::vector<std::filesystem::path> GetModFolder(const std::string& root) {
 }

 ModInstallResult InstallMod(const std::filesystem::path& path, const u64 program_id, const bool copy) {
-    const auto program_id_string = fmt::format("{:016X}", program_id);
+    const auto program_id_string = fmt::format("{:016X}", FileSys::GetBaseTitleID(program_id));
    const auto mod_name = path.filename();
    const auto mod_dir =
        DataManager::GetDataDir(DataManager::DataDir::Mods) / program_id_string / mod_name;
@@ -5,6 +5,7 @@

 #include "common/fs/fs.h"
 #include "common/fs/path_util.h"
+#include "core/file_sys/common_funcs.h"
 #include "core/file_sys/savedata_factory.h"
 #include "core/hle/service/am/am_types.h"
 #include "frontend_common/content_manager.h"
@@ -305,6 +306,7 @@ void RemoveAllTransferableShaderCaches(u64 program_id) {
 }

 void RemoveCustomConfiguration(u64 program_id, const std::string& game_path) {
+    program_id = FileSys::GetBaseTitleID(program_id);
    const auto file_path = std::filesystem::path(Common::FS::ToU8String(game_path));
    const auto config_file_name =
        program_id == 0 ? Common::FS::PathToUTF8String(file_path.filename()).append(".ini")
@@ -367,7 +367,9 @@ endif()
 if (YUZU_USE_EXTERNAL_FFMPEG)
    add_dependencies(video_core ffmpeg-build)
 endif()
+
 target_include_directories(video_core PUBLIC ${FFmpeg_INCLUDE_DIR})
+
 target_link_libraries(video_core PRIVATE ${FFmpeg_LIBRARIES})
 target_link_options(video_core PRIVATE ${FFmpeg_LDFLAGS})

@@ -24,6 +24,7 @@
 #include "common/settings_input.h"
 #include "configuration/shared_widget.h"
 #include "core/core.h"
+#include "core/file_sys/common_funcs.h"
 #include "core/file_sys/control_metadata.h"
 #include "core/file_sys/patch_manager.h"
 #include "core/file_sys/xts_archive.h"
@@ -50,7 +51,7 @@
 ConfigurePerGame::ConfigurePerGame(QWidget* parent, u64 title_id_, const std::string& file_name,
                                   std::vector<VkDeviceInfo::Record>& vk_device_records,
                                   Core::System& system_)
-    : QDialog(parent), ui(std::make_unique<Ui::ConfigurePerGame>()), title_id{title_id_},
+    : QDialog(parent), ui(std::make_unique<Ui::ConfigurePerGame>()), title_id{FileSys::GetBaseTitleID(title_id_)},
      system{system_},
      builder{std::make_unique<ConfigurationShared::Builder>(this, !system_.IsPoweredOn())},
      tab_group{std::make_shared<std::vector<ConfigurationShared::Tab*>>()} {
@@ -24,6 +24,7 @@
 #include "common/fs/path_util.h"
 #include "configuration/addon/mod_select_dialog.h"
 #include "core/core.h"
+#include "core/file_sys/common_funcs.h"
 #include "core/file_sys/patch_manager.h"
 #include "core/loader/loader.h"
 #include "frontend_common/mod_manager.h"
@@ -137,7 +138,7 @@ void ConfigurePerGameAddons::LoadFromFile(FileSys::VirtualFile file_) {
 }

 void ConfigurePerGameAddons::SetTitleId(u64 id) {
-    this->title_id = id;
+    this->title_id = FileSys::GetBaseTitleID(id);
 }

 void ConfigurePerGameAddons::InstallMods(const QStringList& mods) {
@@ -1922,7 +1922,7 @@ void MainWindow::BootGame(const QString& filename, Service::AM::FrontendAppletPa
            std::filesystem::path{Common::U16StringFromBuffer(filename.utf16(), filename.size())};
        const auto config_file_name = title_id == 0
                                          ? Common::FS::PathToUTF8String(file_path.filename())
-                                          : fmt::format("{:016X}", title_id);
+                                          : fmt::format("{:016X}", FileSys::GetBaseTitleID(title_id));
        QtConfig per_game_config(config_file_name, Config::ConfigType::PerGameConfig);
        QtCommon::system->HIDCore().ReloadInputDevices();
        QtCommon::system->ApplySettings();
@@ -2544,9 +2544,11 @@ void MainWindow::OnGameListDumpRomFS(u64 program_id, const std::string& game_pat
    }

    const FileSys::NCA update_nca{packed_update_raw, nullptr};
+    const auto selected_update_id = FileSys::GetUpdateTitleID(title_id);
+    const auto application_update_id = FileSys::GetUpdateTitleID(FileSys::GetBaseTitleID(title_id));
    if (type != FileSys::ContentRecordType::Program ||
        update_nca.GetStatus() != Loader::ResultStatus::ErrorMissingBKTRBaseRomFS ||
-        update_nca.GetTitleId() != FileSys::GetUpdateTitleID(title_id)) {
+        (update_nca.GetTitleId() != selected_update_id && update_nca.GetTitleId() != application_update_id)) {
        packed_update_raw = {};
    }

@@ -4421,6 +4423,7 @@ void MainWindow::SetFPSSuffix() {

 bool MainWindow::SelectRomFSDumpTarget(const FileSys::ContentProvider& installed, u64 program_id,
                                       u64* selected_title_id, u8* selected_content_record_type) {
+    program_id = FileSys::GetBaseTitleID(program_id);
    using ContentInfo = std::tuple<u64, FileSys::TitleType, FileSys::ContentRecordType>;
    boost::container::flat_set<ContentInfo> available_title_ids;