emulators: introduce lime-sa (Nintendo 3DS Emulator)

config/emulators/3ds.conf

@@ -0,0 +1,11 @@
+SYSTEM_NAME="3ds"
+SYSTEM_FULLNAME="Nintendo 3DS"
+SYSTEM_MANUFACTURER="Nintendo"
+SYSTEM_RELEASE="2010"
+SYSTEM_HARDWARE="portable"
+SYSTEM_PATH="/storage/roms/3ds"
+SYSTEM_EXTENSION=".3ds .3dsx .elf .axf .cci .cxi .app"
+SYSTEM_COMMAND="/usr/bin/runemu.sh %ROM% -P%SYSTEM% --core=%CORE% --emulator=%EMULATOR% --controllers=\"%CONTROLLERSCONFIG%\""
+SYSTEM_PLATFORM="3ds"
+SYSTEM_THEME="3ds"
+SYSTEM_WIKI_PATH="3ds"

packages/emulators/standalone/lime-sa/config/S922X/lime.gptk

@@ -0,0 +1,27 @@
+back = \\
+start = \\
+a = \\
+b = \\
+x = \\
+y = \\
+l1 = \\
+l2 = \\
+l3 = \\
+r1 = \\
+r2 = \\
+r3 = mouse_left
+up = \\
+down = \\
+left = \\
+right = \\
+left_analog_up = \\
+left_analog_down = \\
+left_analog_left = \\
+left_analog_right = \\
+right_analog_up = mouse_movement_up
+right_analog_down = mouse_movement_down
+right_analog_left = mouse_movement_left
+right_analog_right = mouse_movement_right
+deadzone_triggers = 3000
+mouse_scale = 6128
+mouse_delay = 16

packages/emulators/standalone/lime-sa/config/S922X/sdl2-config.ini

@@ -0,0 +1,376 @@
+[Controls]
+# The input devices and parameters for each 3DS native input
+# It should be in the format of "engine:[engine_name],[param1]:[value1],[param2]:[value2]..."
+# Escape characters $0 (for ':'), $1 (for ',') and $2 (for '$') can be used in values
+
+# for button input, the following devices are available:
+#  - "keyboard" (default) for keyboard input. Required parameters:
+#      - "code": the code of the key to bind
+#  - "sdl" for joystick input using SDL. Required parameters:
+#      - "joystick": the index of the joystick to bind
+#      - "button"(optional): the index of the button to bind
+#      - "hat"(optional): the index of the hat to bind as direction buttons
+#      - "axis"(optional): the index of the axis to bind
+#      - "direction"(only used for hat): the direction name of the hat to bind. Can be "up", "down", "left" or "right"
+#      - "threshold"(only used for axis): a float value in (-1.0, 1.0) which the button is
+#          triggered if the axis value crosses
+#      - "direction"(only used for axis): "+" means the button is triggered when the axis value
+#          is greater than the threshold; "-" means the button is triggered when the axis value
+#          is smaller than the threshold
+button_a=button:1,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_b=button:0,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_x=button:2,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_y=button:3,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_up=button:8,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_down=button:9,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_left=button:10,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_right=button:11,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_l=button:4,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_r=button:5,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_start=button:17,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_select=button:12,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_debug=
+button_gpio14=
+button_zl=button:6,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_zr=button:7,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+button_home=
+
+# for analog input, the following devices are available:
+#  - "analog_from_button" (default) for emulating analog input from direction buttons. Required parameters:
+#      - "up", "down", "left", "right": sub-devices for each direction.
+#          Should be in the format as a button input devices using escape characters, for example, "engine$0keyboard$1code$00"
+#      - "modifier": sub-devices as a modifier.
+#      - "modifier_scale": a float number representing the applied modifier scale to the analog input.
+#          Must be in range of 0.0-1.0. Defaults to 0.5
+#  - "sdl" for joystick input using SDL. Required parameters:
+#      - "joystick": the index of the joystick to bind
+#      - "axis_x": the index of the axis to bind as x-axis (default to 0)
+#      - "axis_y": the index of the axis to bind as y-axis (default to 1)
+circle_Pad=axis_x:0,axis_y:1,deadzone:0.100000,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+c_stick=axis_x:2,axis_y:3,deadzone:0.100000,engine:sdl,guid:03001354474f2d556c74726120476100,port:0
+
+# for motion input, the following devices are available:
+#  - "motion_emu" (default) for emulating motion input from mouse input. Required parameters:
+#      - "update_period": update period in milliseconds (default to 100)
+#      - "sensitivity": the coefficient converting mouse movement to tilting angle (default to 0.01)
+#      - "tilt_clamp": the max value of the tilt angle in degrees (default to 90)
+#  - "cemuhookudp" reads motion input from a udp server that uses cemuhook's udp protocol
+motion_device=
+
+# for touch input, the following devices are available:
+#  - "emu_window" (default) for emulating touch input from mouse input to the emulation window. No parameters required
+#  - "cemuhookudp" reads touch input from a udp server that uses cemuhook's udp protocol
+#      - "min_x", "min_y", "max_x", "max_y": defines the udp device's touch screen coordinate system
+touch_device=
+
+# Most desktop operating systems do not expose a way to poll the motion state of the controllers
+# so as a way around it, cemuhook created a udp client/server protocol to broadcast the data directly
+# from a controller device to the client program. Lime has a client that can connect and read
+# from any cemuhook compatible motion program.
+
+# IPv4 address of the udp input server (Default "127.0.0.1")
+udp_input_address=
+
+# Port of the udp input server. (Default 26760)
+udp_input_port=
+
+# The pad to request data on. Should be between 0 (Pad 1) and 3 (Pad 4). (Default 0)
+udp_pad_index=
+
+[Core]
+# Whether to use the Just-In-Time (JIT) compiler for CPU emulation
+# 0: Interpreter (slow), 1 (default): JIT (fast)
+use_cpu_jit =
+
+# Change the Clock Frequency of the emulated 3DS CPU.
+# Underclocking can increase the performance of the game at the risk of freezing.
+# Overclocking may fix lag that happens on console, but also comes with the risk of freezing.
+# Range is any positive integer (but we suspect 25 - 400 is a good idea) Default is 100
+cpu_clock_percentage = 100
+
+[Renderer]
+# Whether to render using OpenGL or Software
+# 0: Software, 1: OpenGL (default)
+graphics_api = 2
+
+# Whether to render using GLES or OpenGL
+# 0 (default): OpenGL, 1: GLES
+use_gles = 1
+
+# Whether to use hardware shaders to emulate 3DS shaders
+# 0: Software, 1 (default): Hardware
+use_hw_shader =
+
+# Whether to use accurate multiplication in hardware shaders
+# 0: Off (Faster, but causes issues in some games) 1: On (Default. Slower, but correct)
+shaders_accurate_mul = Off
+
+# Whether to use the Just-In-Time (JIT) compiler for shader emulation
+# 0: Interpreter (slow), 1 (default): JIT (fast)
+use_shader_jit =
+
+# Forces VSync on the display thread. Usually doesn't impact performance, but on some drivers it can
+# so only turn this off if you notice a speed difference.
+# 0: Off, 1 (default): On
+use_vsync_new = Off
+
+# Reduce stuttering by storing and loading generated shaders to disk
+# 0: Off, 1 (default. On)
+use_disk_shader_cache =
+
+# Resolution scale factor
+# 0: Auto (scales resolution to window size), 1: Native 3DS screen resolution, Otherwise a scale
+# factor for the 3DS resolution
+resolution_factor = 1
+
+# Texture filter
+# 0: None, 1: Anime4K, 2: Bicubic, 3: Nearest Neighbor, 4: ScaleForce, 5: xBRZ
+texture_filter =
+
+# Limits the speed of the game to run no faster than this value as a percentage of target speed.
+# Will not have an effect if unthrottled is enabled.
+# 5 - 995: Speed limit as a percentage of target game speed. 0 for unthrottled. 100 (default)
+frame_limit =
+
+# Overrides the frame limiter to use frame_limit_alternate instead of frame_limit.
+# 0: Off (default), 1: On
+use_frame_limit_alternate =
+
+# Alternate speed limit to be used instead of frame_limit if use_frame_limit_alternate is enabled
+# 5 - 995: Speed limit as a percentage of target game speed. 0 for unthrottled. 200 (default)
+frame_limit_alternate =
+
+# The clear color for the renderer. What shows up on the sides of the bottom screen.
+# Must be in range of 0.0-1.0. Defaults to 0.0 for all.
+bg_red =
+bg_blue =
+bg_green =
+
+# Whether and how Stereoscopic 3D should be rendered
+# 0 (default): Off, 1: Side by Side, 2: Anaglyph, 3: Interlaced, 4: Reverse Interlaced
+render_3d =
+
+# Change 3D Intensity
+# 0 - 100: Intensity. 0 (default)
+factor_3d =
+
+# Change Default Eye to Render When in Monoscopic Mode
+# 0 (default): Left, 1: Right
+mono_render_option =
+
+# The name of the post processing shader to apply.
+# Loaded from shaders if render_3d is off or side by side.
+pp_shader_name =
+
+# The name of the shader to apply when render_3d is anaglyph.
+# Loaded from shaders/anaglyph
+anaglyph_shader_name =
+
+# Whether to enable linear filtering or not
+# This is required for some shaders to work correctly
+# 0: Nearest, 1 (default): Linear
+filter_mode =
+
+[Layout]
+# Layout for the screen inside the render window.
+# 0 (default): Default Top Bottom Screen
+# 1: Single Screen Only
+# 2: Large Screen Small Screen
+# 3: Side by Side
+# 4: Separate Windows
+layout_option = 3
+
+# Toggle custom layout (using the settings below) on or off.
+# 0 (default): Off, 1: On
+custom_layout = 0
+
+# Screen placement when using Custom layout option
+# 0x, 0y is the top left corner of the render window.
+custom_top_left =
+custom_top_top =
+custom_top_right =
+custom_top_bottom =
+custom_bottom_left =
+custom_bottom_top =
+custom_bottom_right =
+custom_bottom_bottom =
+
+# Opacity of second layer when using custom layout option (bottom screen unless swapped)
+custom_second_layer_opacity =
+
+# Swaps the prominent screen with the other screen.
+# For example, if Single Screen is chosen, setting this to 1 will display the bottom screen instead of the top screen.
+# 0 (default): Top Screen is prominent, 1: Bottom Screen is prominent
+swap_screen = 0
+
+# Toggle upright orientation, for book style games.
+# 0 (default): Off, 1: On
+upright_screen = 0
+
+# The proportion between the large and small screens when playing in Large Screen Small Screen layout.
+# Must be a real value between 1.0 and 16.0. Default is 4
+large_screen_proportion =
+
+# Dumps textures as PNG to dump/textures/[Title ID]/.
+# 0 (default): Off, 1: On
+dump_textures =
+
+# Reads PNG files from load/textures/[Title ID]/ and replaces textures.
+# 0 (default): Off, 1: On
+custom_textures =
+
+# Loads all custom textures into memory before booting.
+# 0 (default): Off, 1: On
+preload_textures =
+
+# Loads custom textures asynchronously with background threads.
+# 0: Off, 1 (default): On
+async_custom_loading =
+
+[Audio]
+# Whether or not to enable DSP LLE
+# 0 (default): No, 1: Yes
+enable_dsp_lle =
+
+# Whether or not to run DSP LLE on a different thread
+# 0 (default): No, 1: Yes
+enable_dsp_lle_thread =
+
+# Whether or not to enable the audio-stretching post-processing effect.
+# This effect adjusts audio speed to match emulation speed and helps prevent audio stutter,
+# at the cost of increasing audio latency.
+# 0: No, 1 (default): Yes
+enable_audio_stretching =
+
+# Output volume.
+# 1.0 (default): 100%, 0.0; mute
+volume =
+
+# Which audio output type to use.
+# 0 (default): Auto-select, 1: No audio output, 2: Cubeb (if available), 3: OpenAL (if available), 4: SDL2 (if available)
+output_type =
+
+# Which audio output device to use.
+# auto (default): Auto-select
+output_device =
+
+# Which audio input type to use.
+# 0 (default): Auto-select, 1: No audio input, 2: Static noise, 3: Cubeb (if available), 4: OpenAL (if available)
+input_type =
+
+# Which audio input device to use.
+# auto (default): Auto-select
+input_device =
+
+[Data Storage]
+# Whether to create a virtual SD card.
+# 1 (default): Yes, 0: No
+use_virtual_sd =
+
+# Whether to use custom storage locations
+# 1: Yes, 0 (default): No
+use_custom_storage =
+
+# The path of the virtual SD card directory.
+# empty (default) will use the user_path
+sdmc_directory =
+
+# The path of NAND directory.
+# empty (default) will use the user_path
+nand_directory =
+
+[System]
+# The system model that Lime will try to emulate
+# 0: Old 3DS, 1: New 3DS (default)
+is_new_3ds =
+
+# The system region that Lime will use during emulation
+# -1: Auto-select (default), 0: Japan, 1: USA, 2: Europe, 3: Australia, 4: China, 5: Korea, 6: Taiwan
+region_value =
+
+# The clock to use when Lime starts
+# 0: System clock (default), 1: fixed time
+init_clock =
+
+# Time used when init_clock is set to fixed_time in the format %Y-%m-%d %H:%M:%S
+# set to fixed time. Default 2000-01-01 00:00:01
+# Note: 3DS can only handle times later then Jan 1 2000
+init_time =
+
+[Camera]
+# Which camera engine to use for the right outer camera
+# blank (default): a dummy camera that always returns black image
+camera_outer_right_name =
+
+# A config string for the right outer camera. Its meaning is defined by the camera engine
+camera_outer_right_config =
+
+# The image flip to apply
+# 0: None (default), 1: Horizontal, 2: Vertical, 3: Reverse
+camera_outer_right_flip =
+
+# ... for the left outer camera
+camera_outer_left_name =
+camera_outer_left_config =
+camera_outer_left_flip =
+
+# ... for the inner camera
+camera_inner_name =
+camera_inner_config =
+camera_inner_flip =
+
+[Miscellaneous]
+# A filter which removes logs below a certain logging level.
+# Examples: *:Debug Kernel.SVC:Trace Service.*:Critical
+log_filter = *:Info
+
+[Debugging]
+# Record frame time data, can be found in the log directory. Boolean value
+record_frame_times =
+
+# Port for listening to GDB connections.
+use_gdbstub=false
+gdbstub_port=24689
+
+# Whether to enable additional debugging information during emulation
+# 0 (default): Off, 1: On
+renderer_debug =
+
+# To LLE a service module add "LLE\<module name>=true"
+
+[WebService]
+# Whether or not to enable telemetry
+# 0: No, 1 (default): Yes
+enable_telemetry = 0
+# URL for Web API
+web_api_url = https://api.citra-emu.org
+# Username and token for Lime Web Service
+# See https://profile.citra-emu.org/ for more info
+citra_username =
+citra_token =
+
+[Video Dumping]
+# Format of the video to output, default: webm
+output_format =
+
+# Options passed to the muxer (optional)
+# This is a param package, format: [key1]:[value1],[key2]:[value2],...
+format_options =
+
+# Video encoder used, default: libvpx-vp9
+video_encoder =
+
+# Options passed to the video codec (optional)
+video_encoder_options =
+
+# Video bitrate, default: 2500000
+video_bitrate =
+
+# Audio encoder used, default: libvorbis
+audio_encoder =
+
+# Options passed to the audio codec (optional)
+audio_encoder_options =
+
+# Audio bitrate, default: 64000
+audio_bitrate =

packages/emulators/standalone/lime-sa/package.mk

@@ -0,0 +1,39 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2024-present ROCKNIX (https://github.com/ROCKNIX)
+
+PKG_NAME="lime-sa"
+PKG_VERSION="235697e41f0f28237a9dd594f94e6b9038c2d04b"
+PKG_LICENSE="GPL"
+PKG_SITE="https://github.com/Lime3DS/Lime3DS"
+PKG_URL="${PKG_SITE}.git"
+PKG_DEPENDS_TARGET="toolchain ffmpeg mesa SDL2 boost zlib libusb boost zstd control-gen"
+PKG_LONGDESC="Lime - Nintendo 3DS emulator"
+PKG_TOOLCHAIN="cmake"
+
+if [ ! "${OPENGL}" = "no" ]; then
+  PKG_DEPENDS_TARGET+=" ${OPENGL} glu libglvnd"
+fi
+
+if [ "${OPENGLES_SUPPORT}" = yes ]; then
+  PKG_DEPENDS_TARGET+=" ${OPENGLES}"
+fi
+
+if [ "${VULKAN_SUPPORT}" = "yes" ]
+then
+  PKG_DEPENDS_TARGET+=" vulkan-loader vulkan-headers"
+fi
+
+PKG_CMAKE_OPTS_TARGET+="-DENABLE_QT=OFF \
+                        -DENABLE_QT_TRANSLATION=OFF \
+                        -DENABLE_SDL2=ON \
+                        -DCITRA_WARNINGS_AS_ERRORS=OFF \
+                        -DUSE_DISCORD_PRESENCE=OFF"
+
+makeinstall_target() {
+  mkdir -p ${INSTALL}/usr/bin
+    cp ${PKG_BUILD}/.${TARGET_NAME}/bin/MinSizeRel/lime ${INSTALL}/usr/bin
+    cp ${PKG_DIR}/scripts/* ${INSTALL}/usr/bin
+
+  mkdir -p ${INSTALL}/usr/config/lime-emu
+    cp -rf ${PKG_DIR}/config/${DEVICE}/* ${INSTALL}/usr/config/lime-emu
+}

packages/emulators/standalone/lime-sa/patches/000-fix-sdl.patch

@@ -0,0 +1,13 @@
+diff --git a/src/lime/emu_window/emu_window_sdl2_vk.cpp b/src/lime/emu_window/emu_window_sdl2_vk.cpp
+index d6c103955..9402fd9f0 100644
+--- a/src/lime/emu_window/emu_window_sdl2_vk.cpp
++++ b/src/lime/emu_window/emu_window_sdl2_vk.cpp
+@@ -24,7 +24,7 @@ EmuWindow_SDL2_VK::EmuWindow_SDL2_VK(bool fullscreen, bool is_secondary)
+                          SDL_WINDOWPOS_UNDEFINED, // x position
+                          SDL_WINDOWPOS_UNDEFINED, // y position
+                          Core::kScreenTopWidth, Core::kScreenTopHeight + Core::kScreenBottomHeight,
+-                         SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
++                         SDL_WINDOW_VULKAN | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+     SDL_SysWMinfo wm;
+     SDL_VERSION(&wm.version);
+     if (SDL_GetWindowWMInfo(render_window, &wm) == SDL_FALSE) {

packages/emulators/standalone/lime-sa/patches/001-lime.patch

@@ -0,0 +1,22 @@
+diff --git a/src/common/common_paths.h b/src/common/common_paths.h
+index f12eedb..6f37046 100644
+--- a/src/common/common_paths.h
++++ b/src/common/common_paths.h
+@@ -29,7 +29,7 @@
+ // For compatibility with XDG paths.
+ #define EMU_DATA_DIR "citra-emu"
+ #else
+-#define EMU_DATA_DIR "citra-emu"
++#define EMU_DATA_DIR "lime-emu"
+ #endif
+ #endif
+ 
+@@ -55,7 +55,7 @@
+ 
+ // Filenames
+ // Files in the directory returned by GetUserPath(UserPath::LogDir)
+-#define LOG_FILE "citra_log.txt"
++#define LOG_FILE "lime_log.txt"
+ 
+ // Files in the directory returned by GetUserPath(UserPath::ConfigDir)
+ #define EMU_CONFIG "emu.ini"

packages/emulators/standalone/lime-sa/scripts/start_lime.sh

@@ -0,0 +1,109 @@
+#!/bin/bash
+
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2024-present ROCKNIX (https://github.com/ROCKNIX)
+
+. /etc/profile
+set_kill set "-9 lime"
+
+# Load gptokeyb support files
+control-gen_init.sh
+source /storage/.config/gptokeyb/control.ini
+get_controls
+
+# Make sure Lime config directory exists
+[ ! -d /storage/.config/lime-emu ] && cp -r /usr/config/lime-emu /storage/.config
+
+# Move sdmc & nand to 3ds roms folder
+[ ! -d /storage/roms/3ds/lime-sa/sdmc ] && mkdir -p /storage/roms/3ds/lime-sa/sdmc
+rm -rf /storage/.config/lime-emu/sdmc
+ln -sf /storage/roms/3ds/lime-sa/sdmc /storage/.config/lime-emu/sdmc
+
+[ ! -d /storage/roms/3ds/lime-sa/nand ] && mkdir -p /storage/roms/3ds/lime-sa/nand
+rm -rf /storage/.config/lime-emu/nand
+ln -sf /storage/roms/3ds/lime-sa/nand /storage/.config/lime-emu/nand
+
+
+# Emulation Station Features
+GAME=$(echo "${1}"| sed "s#^/.*/##")
+CPU=$(get_setting cpu_speed 3ds "${GAME}")
+EMOUSE=$(get_setting emulate_mouse 3ds "${GAME}")
+RENDERER=$(get_setting graphics_backend 3ds "${GAME}")
+RES=$(get_setting resolution_scale 3ds "${GAME}")
+ROTATE=$(get_setting rotate_screen 3ds "${GAME}")
+SLAYOUT=$(get_setting screen_layout 3ds "${GAME}")
+
+# CPU Underclock
+case "${CPU}" in
+  0) sed -i '/cpu_clock_percentage =/c\cpu_clock_percentage = 100' /storage/.config/lime-emu/sdl2-config.ini;;
+  1) sed -i '/cpu_clock_percentage =/c\cpu_clock_percentage = 90' /storage/.config/lime-emu/sdl2-config.ini;;
+  2) sed -i '/cpu_clock_percentage =/c\cpu_clock_percentage = 80' /storage/.config/lime-emu/sdl2-config.ini;;
+  3) sed -i '/cpu_clock_percentage =/c\cpu_clock_percentage = 70' /storage/.config/lime-emu/sdl2-config.ini;;
+  4) sed -i '/cpu_clock_percentage =/c\cpu_clock_percentage = 60' /storage/.config/lime-emu/sdl2-config.ini;;
+  5) sed -i '/cpu_clock_percentage =/c\cpu_clock_percentage = 50' /storage/.config/lime-emu/sdl2-config.ini;;
+esac
+
+# Resolution Scale
+case "${RES}" in
+  0) sed -i '/resolution_factor =/c\resolution_factor = 0' /storage/.config/lime-emu/sdl2-config.ini;;
+  1) sed -i '/resolution_factor =/c\resolution_factor = 1' /storage/.config/lime-emu/sdl2-config.ini;;
+  2) sed -i '/resolution_factor =/c\resolution_factor = 2' /storage/.config/lime-emu/sdl2-config.ini;;
+esac
+
+# Rotate Screen
+case "${ROTATE}" in
+  0) sed -i '/upright_screen =/c\upright_screen = 0' /storage/.config/lime-emu/sdl2-config.ini;;
+  1) sed -i '/upright_screen =/c\upright_screen = 1' /storage/.config/lime-emu/sdl2-config.ini;;
+esac
+
+# Screen Layout
+case "${SLAYOUT}" in
+  0)
+    sed -i '/layout_option =/c\layout_option = 0' /storage/.config/lime-emu/sdl2-config.ini
+    sed -i '/swap_screen =/c\swap_screen = 0' /storage/.config/lime-emu/sdl2-config.ini
+    sed -i '/custom_layout =/c\custom_layout = 0' /storage/.config/lime-emu/sdl2-config.ini
+    ;;
+  1a)
+    sed -i '/layout_option =/c\layout_option = 1' /storage/.config/lime-emu/sdl2-config.ini
+    sed -i '/swap_screen =/c\swap_screen = 0' /storage/.config/lime-emu/sdl2-config.ini
+    sed -i '/custom_layout =/c\custom_layout = 0' /storage/.config/lime-emu/sdl2-config.ini
+    ;;
+  1b)
+    sed -i '/layout_option =/c\layout_option = 1' /storage/.config/lime-emu/sdl2-config.ini
+    sed -i '/swap_screen =/c\swap_screen = 1' /storage/.config/lime-emu/sdl2-config.ini
+    sed -i '/custom_layout =/c\custom_layout = 0' /storage/.config/lime-emu/sdl2-config.ini
+    ;;
+  2)
+    sed -i '/layout_option =/c\layout_option = 2' /storage/.config/lime-emu/sdl2-config.ini
+    sed -i '/swap_screen =/c\swap_screen = 0' /storage/.config/lime-emu/sdl2-config.ini
+    sed -i '/custom_layout =/c\custom_layout = 0' /storage/.config/lime-emu/sdl2-config.ini
+    ;;
+  3)
+    sed -i '/layout_option =/c\layout_option = 3' /storage/.config/lime-emu/sdl2-config.ini
+    sed -i '/swap_screen =/c\swap_screen = 0' /storage/.config/lime-emu/sdl2-config.ini
+    sed -i '/custom_layout =/c\custom_layout = 0' /storage/.config/lime-emu/sdl2-config.ini
+    ;;
+  4)
+    sed -i '/layout_option =/c\layout_option = 0' /storage/.config/lime-emu/sdl2-config.ini
+    sed -i '/swap_screen =/c\swap_screen = 0' /storage/.config/lime-emu/sdl2-config.ini
+    sed -i '/custom_layout =/c\custom_layout = 1' /storage/.config/lime-emu/sdl2-config.ini
+    ;;
+esac
+
+# Video Backend
+case "${RENDERER}" in
+  1) sed -i '/graphics_api =/c\graphics_api = 1' /storage/.config/lime-emu/sdl2-config.ini;;
+  *) sed -i '/graphics_api =/c\graphics_api = 2' /storage/.config/lime-emu/sdl2-config.ini;;
+esac
+
+rm -rf /storage/.local/share/lime-emu
+ln -sf /storage/.config/lime-emu /storage/.local/share/lime-emu
+
+# Run Lime Emulator
+if [ "${EMOUSE}" = "0" ]; then
+  /usr/bin/lime "${1}"
+else
+  ${GPTOKEYB} lime -c /storage/.config/lime-emu/lime.gptk &
+  /usr/bin/lime "${1}"
+  kill -9 "$(pidof gptokeyb)"
+fi

packages/ui/emulationstation/config/common/es_features.cfg

@@ -542,6 +542,48 @@
     </core>
    </cores>
   </emulator>
+  <emulator name="lime">
+   <cores>
+    <core name="lime-sa">"
+     <features>
+      <feature name="cpu speed">
+        <choice name="100%" value="0"/>
+        <choice name="90%" value="1"/>
+        <choice name="80%" value="2"/>
+        <choice name="70%" value="3"/>
+        <choice name="60%" value="4"/>
+        <choice name="50%" value="5"/>
+      </feature>
+      <feature name="emulate mouse">
+        <choice name="yes" value="1"/>
+        <choice name="no" value="0"/>
+      </feature>
+      <feature name="graphics backend">
+        <choice name="opengl" value="1"/>
+        <choice name="vulkan" value="2"/>
+      </feature>
+      <feature name="resolution scale">
+        <choice name="Native 3DS" value="1"/>
+        <choice name="2x" value="2"/>
+        <choice name="3x" value="3"/>
+        <choice name="Max" value="0"/>
+      </feature>
+      <feature name="rotate screen">
+        <choice name="yes" value="1"/>
+        <choice name="no" value="0"/>
+      </feature>
+      <feature name="screen layout">
+        <choice name="top / bottom" value="0"/>
+        <choice name="top only" value="1a"/>
+        <choice name="bottom only" value="1b"/>
+        <choice name="big / small" value="2"/>
+        <choice name="side by side" value="3"/>
+        <choice name="custom" value="4"/>
+      </feature>
+     </features>
+    </core>
+   </cores>
+  </emulator>
   <emulator name="melonds">
    <cores>
     <core name="melonds-sa">
@@ -744,6 +786,7 @@
       <core name="handy" features="netplay, rewind, autosave, cheevos" />
       <core name="hatari" features="netplay, rewind, autosave" />
       <core name="jaxe" features="netplay, rewind, autosave"/>
+      <core name="lime" features="autosave" />
       <core name="mame2003_plus" features="netplay, rewind, autosave">
         <features>
           <feature name="netplay" />