noahbackus
9d30169a8d
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422 lines
15 KiB
C
422 lines
15 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#ifdef SDL_JOYSTICK_HIDAPI
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#include "../SDL_sysjoystick.h"
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#include "SDL_hidapijoystick_c.h"
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#include "SDL_hidapi_rumble.h"
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#ifdef SDL_JOYSTICK_HIDAPI_LUNA
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// Define this if you want to log all packets from the controller
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// #define DEBUG_LUNA_PROTOCOL
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// Sending rumble on macOS blocks for a long time and eventually fails
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#ifndef SDL_PLATFORM_MACOS
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#define ENABLE_LUNA_BLUETOOTH_RUMBLE
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#endif
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enum
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{
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SDL_GAMEPAD_BUTTON_LUNA_MICROPHONE = 11,
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SDL_GAMEPAD_NUM_LUNA_BUTTONS,
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};
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typedef struct
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{
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Uint8 last_state[USB_PACKET_LENGTH];
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} SDL_DriverLuna_Context;
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static void HIDAPI_DriverLuna_RegisterHints(SDL_HintCallback callback, void *userdata)
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{
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SDL_AddHintCallback(SDL_HINT_JOYSTICK_HIDAPI_LUNA, callback, userdata);
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}
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static void HIDAPI_DriverLuna_UnregisterHints(SDL_HintCallback callback, void *userdata)
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{
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SDL_RemoveHintCallback(SDL_HINT_JOYSTICK_HIDAPI_LUNA, callback, userdata);
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}
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static bool HIDAPI_DriverLuna_IsEnabled(void)
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{
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return SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI_LUNA, SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI, SDL_HIDAPI_DEFAULT));
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}
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static bool HIDAPI_DriverLuna_IsSupportedDevice(SDL_HIDAPI_Device *device, const char *name, SDL_GamepadType type, Uint16 vendor_id, Uint16 product_id, Uint16 version, int interface_number, int interface_class, int interface_subclass, int interface_protocol)
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{
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return SDL_IsJoystickAmazonLunaController(vendor_id, product_id);
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}
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static bool HIDAPI_DriverLuna_InitDevice(SDL_HIDAPI_Device *device)
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{
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SDL_DriverLuna_Context *ctx;
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ctx = (SDL_DriverLuna_Context *)SDL_calloc(1, sizeof(*ctx));
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if (!ctx) {
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return false;
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}
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device->context = ctx;
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HIDAPI_SetDeviceName(device, "Amazon Luna Controller");
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return HIDAPI_JoystickConnected(device, NULL);
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}
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static int HIDAPI_DriverLuna_GetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id)
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{
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return -1;
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}
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static void HIDAPI_DriverLuna_SetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id, int player_index)
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{
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}
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static bool HIDAPI_DriverLuna_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
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{
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SDL_DriverLuna_Context *ctx = (SDL_DriverLuna_Context *)device->context;
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SDL_AssertJoysticksLocked();
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SDL_zeroa(ctx->last_state);
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// Initialize the joystick capabilities
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joystick->nbuttons = SDL_GAMEPAD_NUM_LUNA_BUTTONS;
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joystick->naxes = SDL_GAMEPAD_AXIS_COUNT;
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joystick->nhats = 1;
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return true;
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}
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static bool HIDAPI_DriverLuna_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
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{
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#ifdef ENABLE_LUNA_BLUETOOTH_RUMBLE
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if (device->product_id == BLUETOOTH_PRODUCT_LUNA_CONTROLLER) {
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// Same packet as on Xbox One controllers connected via Bluetooth
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Uint8 rumble_packet[] = { 0x03, 0x0F, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0xEB };
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// Magnitude is 1..100 so scale the 16-bit input here
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rumble_packet[4] = (Uint8)(low_frequency_rumble / 655);
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rumble_packet[5] = (Uint8)(high_frequency_rumble / 655);
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if (SDL_HIDAPI_SendRumble(device, rumble_packet, sizeof(rumble_packet)) != sizeof(rumble_packet)) {
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return SDL_SetError("Couldn't send rumble packet");
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}
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return true;
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}
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#endif // ENABLE_LUNA_BLUETOOTH_RUMBLE
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// There is currently no rumble packet over USB
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return SDL_Unsupported();
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}
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static bool HIDAPI_DriverLuna_RumbleJoystickTriggers(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 left_rumble, Uint16 right_rumble)
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{
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return SDL_Unsupported();
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}
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static Uint32 HIDAPI_DriverLuna_GetJoystickCapabilities(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
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{
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Uint32 result = 0;
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#ifdef ENABLE_LUNA_BLUETOOTH_RUMBLE
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if (device->product_id == BLUETOOTH_PRODUCT_LUNA_CONTROLLER) {
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result |= SDL_JOYSTICK_CAP_RUMBLE;
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}
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#endif
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return result;
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}
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static bool HIDAPI_DriverLuna_SetJoystickLED(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint8 red, Uint8 green, Uint8 blue)
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{
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return SDL_Unsupported();
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}
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static bool HIDAPI_DriverLuna_SendJoystickEffect(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, const void *data, int size)
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{
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return SDL_Unsupported();
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}
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static bool HIDAPI_DriverLuna_SetJoystickSensorsEnabled(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, bool enabled)
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{
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return SDL_Unsupported();
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}
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static void HIDAPI_DriverLuna_HandleUSBStatePacket(SDL_Joystick *joystick, SDL_DriverLuna_Context *ctx, Uint8 *data, int size)
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{
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Uint64 timestamp = SDL_GetTicksNS();
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if (ctx->last_state[1] != data[1]) {
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_SOUTH, ((data[1] & 0x01) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_EAST, ((data[1] & 0x02) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_WEST, ((data[1] & 0x04) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_NORTH, ((data[1] & 0x08) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_SHOULDER, ((data[1] & 0x10) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER, ((data[1] & 0x20) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_BACK, ((data[1] & 0x40) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_START, ((data[1] & 0x80) != 0));
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}
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if (ctx->last_state[2] != data[2]) {
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_GUIDE, ((data[2] & 0x01) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LUNA_MICROPHONE, ((data[2] & 0x02) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_STICK, ((data[2] & 0x04) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_STICK, ((data[2] & 0x08) != 0));
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}
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if (ctx->last_state[3] != data[3]) {
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Uint8 hat;
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switch (data[3] & 0x0f) {
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case 0:
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hat = SDL_HAT_UP;
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break;
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case 1:
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hat = SDL_HAT_RIGHTUP;
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break;
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case 2:
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hat = SDL_HAT_RIGHT;
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break;
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case 3:
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hat = SDL_HAT_RIGHTDOWN;
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break;
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case 4:
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hat = SDL_HAT_DOWN;
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break;
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case 5:
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hat = SDL_HAT_LEFTDOWN;
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break;
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case 6:
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hat = SDL_HAT_LEFT;
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break;
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case 7:
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hat = SDL_HAT_LEFTUP;
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break;
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default:
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hat = SDL_HAT_CENTERED;
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break;
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}
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SDL_SendJoystickHat(timestamp, joystick, 0, hat);
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}
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#define READ_STICK_AXIS(offset) \
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(data[offset] == 0x7f ? 0 : (Sint16)HIDAPI_RemapVal((float)data[offset], 0x00, 0xff, SDL_MIN_SINT16, SDL_MAX_SINT16))
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{
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Sint16 axis = READ_STICK_AXIS(4);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFTX, axis);
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axis = READ_STICK_AXIS(5);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFTY, axis);
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axis = READ_STICK_AXIS(6);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHTX, axis);
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axis = READ_STICK_AXIS(7);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHTY, axis);
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}
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#undef READ_STICK_AXIS
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#define READ_TRIGGER_AXIS(offset) \
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(Sint16) HIDAPI_RemapVal((float)data[offset], 0x00, 0xff, SDL_MIN_SINT16, SDL_MAX_SINT16)
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{
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Sint16 axis = READ_TRIGGER_AXIS(8);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFT_TRIGGER, axis);
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axis = READ_TRIGGER_AXIS(9);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHT_TRIGGER, axis);
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}
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#undef READ_TRIGGER_AXIS
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SDL_memcpy(ctx->last_state, data, SDL_min(size, sizeof(ctx->last_state)));
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}
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static void HIDAPI_DriverLuna_HandleBluetoothStatePacket(SDL_Joystick *joystick, SDL_DriverLuna_Context *ctx, Uint8 *data, int size)
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{
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Uint64 timestamp = SDL_GetTicksNS();
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if (size >= 2 && data[0] == 0x02) {
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// Home button has dedicated report
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_GUIDE, ((data[1] & 0x1) != 0));
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return;
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}
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if (size >= 2 && data[0] == 0x04) {
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// Battery level report
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int percent = (int)SDL_roundf((data[1] / 255.0f) * 100.0f);
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SDL_SendJoystickPowerInfo(joystick, SDL_POWERSTATE_ON_BATTERY, percent);
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return;
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}
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if (size < 17 || data[0] != 0x01) {
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// We don't know how to handle this report
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return;
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}
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if (ctx->last_state[13] != data[13]) {
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Uint8 hat;
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switch (data[13] & 0x0f) {
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case 1:
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hat = SDL_HAT_UP;
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break;
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case 2:
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hat = SDL_HAT_RIGHTUP;
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break;
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case 3:
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hat = SDL_HAT_RIGHT;
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break;
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case 4:
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hat = SDL_HAT_RIGHTDOWN;
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break;
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case 5:
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hat = SDL_HAT_DOWN;
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break;
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case 6:
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hat = SDL_HAT_LEFTDOWN;
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break;
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case 7:
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hat = SDL_HAT_LEFT;
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break;
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case 8:
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hat = SDL_HAT_LEFTUP;
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break;
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default:
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hat = SDL_HAT_CENTERED;
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break;
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}
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SDL_SendJoystickHat(timestamp, joystick, 0, hat);
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}
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if (ctx->last_state[14] != data[14]) {
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_SOUTH, ((data[14] & 0x01) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_EAST, ((data[14] & 0x02) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_WEST, ((data[14] & 0x08) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_NORTH, ((data[14] & 0x10) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_SHOULDER, ((data[14] & 0x40) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER, ((data[14] & 0x80) != 0));
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}
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if (ctx->last_state[15] != data[15]) {
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_START, ((data[15] & 0x08) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_STICK, ((data[15] & 0x20) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_STICK, ((data[15] & 0x40) != 0));
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}
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if (ctx->last_state[16] != data[16]) {
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_BACK, ((data[16] & 0x01) != 0));
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LUNA_MICROPHONE, ((data[16] & 0x02) != 0));
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}
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#define READ_STICK_AXIS(offset) \
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(data[offset] == 0x7f ? 0 : (Sint16)HIDAPI_RemapVal((float)data[offset], 0x00, 0xff, SDL_MIN_SINT16, SDL_MAX_SINT16))
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{
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Sint16 axis = READ_STICK_AXIS(2);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFTX, axis);
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axis = READ_STICK_AXIS(4);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFTY, axis);
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axis = READ_STICK_AXIS(6);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHTX, axis);
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axis = READ_STICK_AXIS(8);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHTY, axis);
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}
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#undef READ_STICK_AXIS
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#define READ_TRIGGER_AXIS(offset) \
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(Sint16) HIDAPI_RemapVal((float)((int)(((data[offset] | (data[offset + 1] << 8)) & 0x3ff) - 0x200)), 0x00 - 0x200, 0x3ff - 0x200, SDL_MIN_SINT16, SDL_MAX_SINT16)
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{
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Sint16 axis = READ_TRIGGER_AXIS(9);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFT_TRIGGER, axis);
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axis = READ_TRIGGER_AXIS(11);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHT_TRIGGER, axis);
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}
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#undef READ_TRIGGER_AXIS
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SDL_memcpy(ctx->last_state, data, SDL_min(size, sizeof(ctx->last_state)));
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}
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static bool HIDAPI_DriverLuna_UpdateDevice(SDL_HIDAPI_Device *device)
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{
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SDL_DriverLuna_Context *ctx = (SDL_DriverLuna_Context *)device->context;
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SDL_Joystick *joystick = NULL;
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Uint8 data[USB_PACKET_LENGTH];
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int size = 0;
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if (device->num_joysticks > 0) {
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joystick = SDL_GetJoystickFromID(device->joysticks[0]);
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} else {
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return false;
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}
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while ((size = SDL_hid_read_timeout(device->dev, data, sizeof(data), 0)) > 0) {
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#ifdef DEBUG_LUNA_PROTOCOL
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HIDAPI_DumpPacket("Amazon Luna packet: size = %d", data, size);
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#endif
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if (!joystick) {
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continue;
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}
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switch (size) {
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case 10:
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HIDAPI_DriverLuna_HandleUSBStatePacket(joystick, ctx, data, size);
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break;
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default:
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HIDAPI_DriverLuna_HandleBluetoothStatePacket(joystick, ctx, data, size);
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break;
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}
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}
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if (size < 0) {
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// Read error, device is disconnected
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HIDAPI_JoystickDisconnected(device, device->joysticks[0]);
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}
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return (size >= 0);
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}
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static void HIDAPI_DriverLuna_CloseJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
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{
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}
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static void HIDAPI_DriverLuna_FreeDevice(SDL_HIDAPI_Device *device)
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{
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}
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SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverLuna = {
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SDL_HINT_JOYSTICK_HIDAPI_LUNA,
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true,
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HIDAPI_DriverLuna_RegisterHints,
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HIDAPI_DriverLuna_UnregisterHints,
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HIDAPI_DriverLuna_IsEnabled,
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HIDAPI_DriverLuna_IsSupportedDevice,
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HIDAPI_DriverLuna_InitDevice,
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HIDAPI_DriverLuna_GetDevicePlayerIndex,
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HIDAPI_DriverLuna_SetDevicePlayerIndex,
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HIDAPI_DriverLuna_UpdateDevice,
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HIDAPI_DriverLuna_OpenJoystick,
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HIDAPI_DriverLuna_RumbleJoystick,
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HIDAPI_DriverLuna_RumbleJoystickTriggers,
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HIDAPI_DriverLuna_GetJoystickCapabilities,
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HIDAPI_DriverLuna_SetJoystickLED,
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HIDAPI_DriverLuna_SendJoystickEffect,
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HIDAPI_DriverLuna_SetJoystickSensorsEnabled,
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HIDAPI_DriverLuna_CloseJoystick,
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HIDAPI_DriverLuna_FreeDevice,
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};
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#endif // SDL_JOYSTICK_HIDAPI_LUNA
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#endif // SDL_JOYSTICK_HIDAPI
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