Initial commit

1 files changed, 421 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/joystick/hidapi/SDL_hidapi_luna.c b/contrib/SDL-3.2.8/src/joystick/hidapi/SDL_hidapi_luna.c
new file mode 100644
index 0000000..7c889a6
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/joystick/hidapi/SDL_hidapi_luna.c
@@ -0,0 +1,421 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "SDL_internal.h"
+
+#ifdef SDL_JOYSTICK_HIDAPI
+
+#include "../SDL_sysjoystick.h"
+#include "SDL_hidapijoystick_c.h"
+#include "SDL_hidapi_rumble.h"
+
+#ifdef SDL_JOYSTICK_HIDAPI_LUNA
+
+// Define this if you want to log all packets from the controller
+// #define DEBUG_LUNA_PROTOCOL
+
+// Sending rumble on macOS blocks for a long time and eventually fails
+#ifndef SDL_PLATFORM_MACOS
+#define ENABLE_LUNA_BLUETOOTH_RUMBLE
+#endif
+
+enum
+{
+    SDL_GAMEPAD_BUTTON_LUNA_MICROPHONE = 11,
+    SDL_GAMEPAD_NUM_LUNA_BUTTONS,
+};
+
+typedef struct
+{
+    Uint8 last_state[USB_PACKET_LENGTH];
+} SDL_DriverLuna_Context;
+
+static void HIDAPI_DriverLuna_RegisterHints(SDL_HintCallback callback, void *userdata)
+{
+    SDL_AddHintCallback(SDL_HINT_JOYSTICK_HIDAPI_LUNA, callback, userdata);
+}
+
+static void HIDAPI_DriverLuna_UnregisterHints(SDL_HintCallback callback, void *userdata)
+{
+    SDL_RemoveHintCallback(SDL_HINT_JOYSTICK_HIDAPI_LUNA, callback, userdata);
+}
+
+static bool HIDAPI_DriverLuna_IsEnabled(void)
+{
+    return SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI_LUNA, SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI, SDL_HIDAPI_DEFAULT));
+}
+
+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)
+{
+    return SDL_IsJoystickAmazonLunaController(vendor_id, product_id);
+}
+
+static bool HIDAPI_DriverLuna_InitDevice(SDL_HIDAPI_Device *device)
+{
+    SDL_DriverLuna_Context *ctx;
+
+    ctx = (SDL_DriverLuna_Context *)SDL_calloc(1, sizeof(*ctx));
+    if (!ctx) {
+        return false;
+    }
+    device->context = ctx;
+
+    HIDAPI_SetDeviceName(device, "Amazon Luna Controller");
+
+    return HIDAPI_JoystickConnected(device, NULL);
+}
+
+static int HIDAPI_DriverLuna_GetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id)
+{
+    return -1;
+}
+
+static void HIDAPI_DriverLuna_SetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id, int player_index)
+{
+}
+
+static bool HIDAPI_DriverLuna_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
+{
+    SDL_DriverLuna_Context *ctx = (SDL_DriverLuna_Context *)device->context;
+
+    SDL_AssertJoysticksLocked();
+
+    SDL_zeroa(ctx->last_state);
+
+    // Initialize the joystick capabilities
+    joystick->nbuttons = SDL_GAMEPAD_NUM_LUNA_BUTTONS;
+    joystick->naxes = SDL_GAMEPAD_AXIS_COUNT;
+    joystick->nhats = 1;
+
+    return true;
+}
+
+static bool HIDAPI_DriverLuna_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
+{
+#ifdef ENABLE_LUNA_BLUETOOTH_RUMBLE
+    if (device->product_id == BLUETOOTH_PRODUCT_LUNA_CONTROLLER) {
+        // Same packet as on Xbox One controllers connected via Bluetooth
+        Uint8 rumble_packet[] = { 0x03, 0x0F, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0xEB };
+
+        // Magnitude is 1..100 so scale the 16-bit input here
+        rumble_packet[4] = (Uint8)(low_frequency_rumble / 655);
+        rumble_packet[5] = (Uint8)(high_frequency_rumble / 655);
+
+        if (SDL_HIDAPI_SendRumble(device, rumble_packet, sizeof(rumble_packet)) != sizeof(rumble_packet)) {
+            return SDL_SetError("Couldn't send rumble packet");
+        }
+
+        return true;
+    }
+#endif // ENABLE_LUNA_BLUETOOTH_RUMBLE
+
+    // There is currently no rumble packet over USB
+    return SDL_Unsupported();
+}
+
+static bool HIDAPI_DriverLuna_RumbleJoystickTriggers(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 left_rumble, Uint16 right_rumble)
+{
+    return SDL_Unsupported();
+}
+
+static Uint32 HIDAPI_DriverLuna_GetJoystickCapabilities(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
+{
+    Uint32 result = 0;
+
+#ifdef ENABLE_LUNA_BLUETOOTH_RUMBLE
+    if (device->product_id == BLUETOOTH_PRODUCT_LUNA_CONTROLLER) {
+        result |= SDL_JOYSTICK_CAP_RUMBLE;
+    }
+#endif
+
+    return result;
+}
+
+static bool HIDAPI_DriverLuna_SetJoystickLED(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint8 red, Uint8 green, Uint8 blue)
+{
+    return SDL_Unsupported();
+}
+
+static bool HIDAPI_DriverLuna_SendJoystickEffect(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, const void *data, int size)
+{
+    return SDL_Unsupported();
+}
+
+static bool HIDAPI_DriverLuna_SetJoystickSensorsEnabled(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, bool enabled)
+{
+    return SDL_Unsupported();
+}
+
+static void HIDAPI_DriverLuna_HandleUSBStatePacket(SDL_Joystick *joystick, SDL_DriverLuna_Context *ctx, Uint8 *data, int size)
+{
+    Uint64 timestamp = SDL_GetTicksNS();
+
+    if (ctx->last_state[1] != data[1]) {
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_SOUTH, ((data[1] & 0x01) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_EAST, ((data[1] & 0x02) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_WEST, ((data[1] & 0x04) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_NORTH, ((data[1] & 0x08) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_SHOULDER, ((data[1] & 0x10) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER, ((data[1] & 0x20) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_BACK, ((data[1] & 0x40) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_START, ((data[1] & 0x80) != 0));
+    }
+    if (ctx->last_state[2] != data[2]) {
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_GUIDE, ((data[2] & 0x01) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LUNA_MICROPHONE, ((data[2] & 0x02) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_STICK, ((data[2] & 0x04) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_STICK, ((data[2] & 0x08) != 0));
+    }
+
+    if (ctx->last_state[3] != data[3]) {
+        Uint8 hat;
+
+        switch (data[3] & 0x0f) {
+        case 0:
+            hat = SDL_HAT_UP;
+            break;
+        case 1:
+            hat = SDL_HAT_RIGHTUP;
+            break;
+        case 2:
+            hat = SDL_HAT_RIGHT;
+            break;
+        case 3:
+            hat = SDL_HAT_RIGHTDOWN;
+            break;
+        case 4:
+            hat = SDL_HAT_DOWN;
+            break;
+        case 5:
+            hat = SDL_HAT_LEFTDOWN;
+            break;
+        case 6:
+            hat = SDL_HAT_LEFT;
+            break;
+        case 7:
+            hat = SDL_HAT_LEFTUP;
+            break;
+        default:
+            hat = SDL_HAT_CENTERED;
+            break;
+        }
+        SDL_SendJoystickHat(timestamp, joystick, 0, hat);
+    }
+
+#define READ_STICK_AXIS(offset) \
+    (data[offset] == 0x7f ? 0 : (Sint16)HIDAPI_RemapVal((float)data[offset], 0x00, 0xff, SDL_MIN_SINT16, SDL_MAX_SINT16))
+    {
+        Sint16 axis = READ_STICK_AXIS(4);
+        SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFTX, axis);
+        axis = READ_STICK_AXIS(5);
+        SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFTY, axis);
+        axis = READ_STICK_AXIS(6);
+        SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHTX, axis);
+        axis = READ_STICK_AXIS(7);
+        SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHTY, axis);
+    }
+#undef READ_STICK_AXIS
+
+#define READ_TRIGGER_AXIS(offset) \
+    (Sint16) HIDAPI_RemapVal((float)data[offset], 0x00, 0xff, SDL_MIN_SINT16, SDL_MAX_SINT16)
+    {
+        Sint16 axis = READ_TRIGGER_AXIS(8);
+        SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFT_TRIGGER, axis);
+        axis = READ_TRIGGER_AXIS(9);
+        SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHT_TRIGGER, axis);
+    }
+#undef READ_TRIGGER_AXIS
+
+    SDL_memcpy(ctx->last_state, data, SDL_min(size, sizeof(ctx->last_state)));
+}
+
+static void HIDAPI_DriverLuna_HandleBluetoothStatePacket(SDL_Joystick *joystick, SDL_DriverLuna_Context *ctx, Uint8 *data, int size)
+{
+    Uint64 timestamp = SDL_GetTicksNS();
+
+    if (size >= 2 && data[0] == 0x02) {
+        // Home button has dedicated report
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_GUIDE, ((data[1] & 0x1) != 0));
+        return;
+    }
+
+    if (size >= 2 && data[0] == 0x04) {
+        // Battery level report
+        int percent = (int)SDL_roundf((data[1] / 255.0f) * 100.0f);
+        SDL_SendJoystickPowerInfo(joystick, SDL_POWERSTATE_ON_BATTERY, percent);
+        return;
+    }
+
+    if (size < 17 || data[0] != 0x01) {
+        // We don't know how to handle this report
+        return;
+    }
+
+    if (ctx->last_state[13] != data[13]) {
+        Uint8 hat;
+
+        switch (data[13] & 0x0f) {
+        case 1:
+            hat = SDL_HAT_UP;
+            break;
+        case 2:
+            hat = SDL_HAT_RIGHTUP;
+            break;
+        case 3:
+            hat = SDL_HAT_RIGHT;
+            break;
+        case 4:
+            hat = SDL_HAT_RIGHTDOWN;
+            break;
+        case 5:
+            hat = SDL_HAT_DOWN;
+            break;
+        case 6:
+            hat = SDL_HAT_LEFTDOWN;
+            break;
+        case 7:
+            hat = SDL_HAT_LEFT;
+            break;
+        case 8:
+            hat = SDL_HAT_LEFTUP;
+            break;
+        default:
+            hat = SDL_HAT_CENTERED;
+            break;
+        }
+        SDL_SendJoystickHat(timestamp, joystick, 0, hat);
+    }
+
+    if (ctx->last_state[14] != data[14]) {
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_SOUTH, ((data[14] & 0x01) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_EAST, ((data[14] & 0x02) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_WEST, ((data[14] & 0x08) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_NORTH, ((data[14] & 0x10) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_SHOULDER, ((data[14] & 0x40) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER, ((data[14] & 0x80) != 0));
+    }
+    if (ctx->last_state[15] != data[15]) {
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_START, ((data[15] & 0x08) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_STICK, ((data[15] & 0x20) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_STICK, ((data[15] & 0x40) != 0));
+    }
+    if (ctx->last_state[16] != data[16]) {
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_BACK, ((data[16] & 0x01) != 0));
+        SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LUNA_MICROPHONE, ((data[16] & 0x02) != 0));
+    }
+
+#define READ_STICK_AXIS(offset) \
+    (data[offset] == 0x7f ? 0 : (Sint16)HIDAPI_RemapVal((float)data[offset], 0x00, 0xff, SDL_MIN_SINT16, SDL_MAX_SINT16))
+    {
+        Sint16 axis = READ_STICK_AXIS(2);
+        SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFTX, axis);
+        axis = READ_STICK_AXIS(4);
+        SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFTY, axis);
+        axis = READ_STICK_AXIS(6);
+        SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHTX, axis);
+        axis = READ_STICK_AXIS(8);
+        SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHTY, axis);
+    }
+#undef READ_STICK_AXIS
+
+#define READ_TRIGGER_AXIS(offset) \
+    (Sint16) HIDAPI_RemapVal((float)((int)(((data[offset] | (data[offset + 1] << 8)) & 0x3ff) - 0x200)), 0x00 - 0x200, 0x3ff - 0x200, SDL_MIN_SINT16, SDL_MAX_SINT16)
+    {
+        Sint16 axis = READ_TRIGGER_AXIS(9);
+        SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFT_TRIGGER, axis);
+        axis = READ_TRIGGER_AXIS(11);
+        SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHT_TRIGGER, axis);
+    }
+#undef READ_TRIGGER_AXIS
+
+    SDL_memcpy(ctx->last_state, data, SDL_min(size, sizeof(ctx->last_state)));
+}
+
+static bool HIDAPI_DriverLuna_UpdateDevice(SDL_HIDAPI_Device *device)
+{
+    SDL_DriverLuna_Context *ctx = (SDL_DriverLuna_Context *)device->context;
+    SDL_Joystick *joystick = NULL;
+    Uint8 data[USB_PACKET_LENGTH];
+    int size = 0;
+
+    if (device->num_joysticks > 0) {
+        joystick = SDL_GetJoystickFromID(device->joysticks[0]);
+    } else {
+        return false;
+    }
+
+    while ((size = SDL_hid_read_timeout(device->dev, data, sizeof(data), 0)) > 0) {
+#ifdef DEBUG_LUNA_PROTOCOL
+        HIDAPI_DumpPacket("Amazon Luna packet: size = %d", data, size);
+#endif
+        if (!joystick) {
+            continue;
+        }
+
+        switch (size) {
+        case 10:
+            HIDAPI_DriverLuna_HandleUSBStatePacket(joystick, ctx, data, size);
+            break;
+        default:
+            HIDAPI_DriverLuna_HandleBluetoothStatePacket(joystick, ctx, data, size);
+            break;
+        }
+    }
+
+    if (size < 0) {
+        // Read error, device is disconnected
+        HIDAPI_JoystickDisconnected(device, device->joysticks[0]);
+    }
+    return (size >= 0);
+}
+
+static void HIDAPI_DriverLuna_CloseJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
+{
+}
+
+static void HIDAPI_DriverLuna_FreeDevice(SDL_HIDAPI_Device *device)
+{
+}
+
+SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverLuna = {
+    SDL_HINT_JOYSTICK_HIDAPI_LUNA,
+    true,
+    HIDAPI_DriverLuna_RegisterHints,
+    HIDAPI_DriverLuna_UnregisterHints,
+    HIDAPI_DriverLuna_IsEnabled,
+    HIDAPI_DriverLuna_IsSupportedDevice,
+    HIDAPI_DriverLuna_InitDevice,
+    HIDAPI_DriverLuna_GetDevicePlayerIndex,
+    HIDAPI_DriverLuna_SetDevicePlayerIndex,
+    HIDAPI_DriverLuna_UpdateDevice,
+    HIDAPI_DriverLuna_OpenJoystick,
+    HIDAPI_DriverLuna_RumbleJoystick,
+    HIDAPI_DriverLuna_RumbleJoystickTriggers,
+    HIDAPI_DriverLuna_GetJoystickCapabilities,
+    HIDAPI_DriverLuna_SetJoystickLED,
+    HIDAPI_DriverLuna_SendJoystickEffect,
+    HIDAPI_DriverLuna_SetJoystickSensorsEnabled,
+    HIDAPI_DriverLuna_CloseJoystick,
+    HIDAPI_DriverLuna_FreeDevice,
+};
+
+#endif // SDL_JOYSTICK_HIDAPI_LUNA
+
+#endif // SDL_JOYSTICK_HIDAPI