| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2023 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_events.h" |
| #include "SDL_timer.h" |
| #include "SDL_joystick.h" |
| #include "SDL_gamecontroller.h" |
| #include "../SDL_sysjoystick.h" |
| #include "SDL_hidapijoystick_c.h" |
| #include "SDL_hidapi_rumble.h" |
| |
| #ifdef SDL_JOYSTICK_HIDAPI_SHIELD |
| |
| /* Define this if you want to log all packets from the controller */ |
| /*#define DEBUG_SHIELD_PROTOCOL*/ |
| |
| #define CMD_BATTERY_STATE 0x07 |
| #define CMD_RUMBLE 0x39 |
| #define CMD_CHARGE_STATE 0x3A |
| |
| /* Milliseconds between polls of battery state */ |
| #define BATTERY_POLL_INTERVAL_MS 60000 |
| |
| /* Milliseconds between retransmission of rumble to keep motors running */ |
| #define RUMBLE_REFRESH_INTERVAL_MS 500 |
| |
| /* Reports that are too small are dropped over Bluetooth */ |
| #define HID_REPORT_SIZE 33 |
| |
| enum |
| { |
| SDL_CONTROLLER_BUTTON_SHIELD_V103_TOUCHPAD = SDL_CONTROLLER_BUTTON_MISC1 + 1, |
| SDL_CONTROLLER_BUTTON_SHIELD_V103_MINUS, |
| SDL_CONTROLLER_BUTTON_SHIELD_V103_PLUS, |
| SDL_CONTROLLER_NUM_SHIELD_V103_BUTTONS, |
| |
| SDL_CONTROLLER_NUM_SHIELD_V104_BUTTONS = SDL_CONTROLLER_BUTTON_MISC1 + 1, |
| }; |
| |
| typedef enum |
| { |
| k_ShieldReportIdControllerState = 0x01, |
| k_ShieldReportIdControllerTouch = 0x02, |
| k_ShieldReportIdCommandResponse = 0x03, |
| k_ShieldReportIdCommandRequest = 0x04, |
| } EShieldReportId; |
| |
| /* This same report structure is used for both requests and responses */ |
| typedef struct |
| { |
| Uint8 report_id; |
| Uint8 cmd; |
| Uint8 seq_num; |
| Uint8 payload[HID_REPORT_SIZE - 3]; |
| } ShieldCommandReport_t; |
| SDL_COMPILE_TIME_ASSERT(ShieldCommandReport_t, sizeof(ShieldCommandReport_t) == HID_REPORT_SIZE); |
| |
| typedef struct |
| { |
| Uint8 seq_num; |
| |
| SDL_JoystickPowerLevel battery_level; |
| SDL_bool charging; |
| Uint32 last_battery_query_time; |
| |
| SDL_bool rumble_report_pending; |
| SDL_bool rumble_update_pending; |
| Uint8 left_motor_amplitude; |
| Uint8 right_motor_amplitude; |
| Uint32 last_rumble_time; |
| |
| Uint8 last_state[USB_PACKET_LENGTH]; |
| } SDL_DriverShield_Context; |
| |
| static void HIDAPI_DriverShield_RegisterHints(SDL_HintCallback callback, void *userdata) |
| { |
| SDL_AddHintCallback(SDL_HINT_JOYSTICK_HIDAPI_SHIELD, callback, userdata); |
| } |
| |
| static void HIDAPI_DriverShield_UnregisterHints(SDL_HintCallback callback, void *userdata) |
| { |
| SDL_DelHintCallback(SDL_HINT_JOYSTICK_HIDAPI_SHIELD, callback, userdata); |
| } |
| |
| static SDL_bool HIDAPI_DriverShield_IsEnabled(void) |
| { |
| return SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI_SHIELD, SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI, SDL_HIDAPI_DEFAULT)); |
| } |
| |
| static SDL_bool HIDAPI_DriverShield_IsSupportedDevice(SDL_HIDAPI_Device *device, const char *name, SDL_GameControllerType type, Uint16 vendor_id, Uint16 product_id, Uint16 version, int interface_number, int interface_class, int interface_subclass, int interface_protocol) |
| { |
| return (type == SDL_CONTROLLER_TYPE_NVIDIA_SHIELD) ? SDL_TRUE : SDL_FALSE; |
| } |
| |
| static SDL_bool HIDAPI_DriverShield_InitDevice(SDL_HIDAPI_Device *device) |
| { |
| SDL_DriverShield_Context *ctx; |
| |
| ctx = (SDL_DriverShield_Context *)SDL_calloc(1, sizeof(*ctx)); |
| if (!ctx) { |
| SDL_OutOfMemory(); |
| return SDL_FALSE; |
| } |
| device->context = ctx; |
| |
| device->type = SDL_CONTROLLER_TYPE_NVIDIA_SHIELD; |
| HIDAPI_SetDeviceName(device, "NVIDIA SHIELD Controller"); |
| |
| return HIDAPI_JoystickConnected(device, NULL); |
| } |
| |
| static int HIDAPI_DriverShield_GetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id) |
| { |
| return -1; |
| } |
| |
| static void HIDAPI_DriverShield_SetDevicePlayerIndex(SDL_HIDAPI_Device *device, SDL_JoystickID instance_id, int player_index) |
| { |
| } |
| |
| static int HIDAPI_DriverShield_SendCommand(SDL_HIDAPI_Device *device, Uint8 cmd, const void *data, int size) |
| { |
| SDL_DriverShield_Context *ctx = (SDL_DriverShield_Context *)device->context; |
| ShieldCommandReport_t cmd_pkt; |
| |
| if (size > sizeof(cmd_pkt.payload)) { |
| return SDL_SetError("Command data exceeds HID report size"); |
| } |
| |
| if (SDL_HIDAPI_LockRumble() != 0) { |
| return -1; |
| } |
| |
| cmd_pkt.report_id = k_ShieldReportIdCommandRequest; |
| cmd_pkt.cmd = cmd; |
| cmd_pkt.seq_num = ctx->seq_num++; |
| if (data) { |
| SDL_memcpy(cmd_pkt.payload, data, size); |
| } |
| |
| /* Zero unused data in the payload */ |
| if (size != sizeof(cmd_pkt.payload)) { |
| SDL_memset(&cmd_pkt.payload[size], 0, sizeof(cmd_pkt.payload) - size); |
| } |
| |
| if (SDL_HIDAPI_SendRumbleAndUnlock(device, (Uint8 *)&cmd_pkt, sizeof(cmd_pkt)) != sizeof(cmd_pkt)) { |
| return SDL_SetError("Couldn't send command packet"); |
| } |
| |
| return 0; |
| } |
| |
| static SDL_bool HIDAPI_DriverShield_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick) |
| { |
| SDL_DriverShield_Context *ctx = (SDL_DriverShield_Context *)device->context; |
| |
| SDL_AssertJoysticksLocked(); |
| |
| ctx->rumble_report_pending = SDL_FALSE; |
| ctx->rumble_update_pending = SDL_FALSE; |
| ctx->left_motor_amplitude = 0; |
| ctx->right_motor_amplitude = 0; |
| ctx->last_rumble_time = 0; |
| SDL_zeroa(ctx->last_state); |
| |
| /* Initialize the joystick capabilities */ |
| if (device->product_id == USB_PRODUCT_NVIDIA_SHIELD_CONTROLLER_V103) { |
| joystick->nbuttons = SDL_CONTROLLER_NUM_SHIELD_V103_BUTTONS; |
| joystick->naxes = SDL_CONTROLLER_AXIS_MAX; |
| joystick->epowerlevel = SDL_JOYSTICK_POWER_WIRED; |
| |
| SDL_PrivateJoystickAddTouchpad(joystick, 1); |
| } else { |
| joystick->nbuttons = SDL_CONTROLLER_NUM_SHIELD_V104_BUTTONS; |
| joystick->naxes = SDL_CONTROLLER_AXIS_MAX; |
| joystick->epowerlevel = SDL_JOYSTICK_POWER_UNKNOWN; |
| } |
| |
| /* Request battery and charging info */ |
| ctx->last_battery_query_time = SDL_GetTicks(); |
| HIDAPI_DriverShield_SendCommand(device, CMD_CHARGE_STATE, NULL, 0); |
| HIDAPI_DriverShield_SendCommand(device, CMD_BATTERY_STATE, NULL, 0); |
| |
| return SDL_TRUE; |
| } |
| |
| static int HIDAPI_DriverShield_SendNextRumble(SDL_HIDAPI_Device *device) |
| { |
| SDL_DriverShield_Context *ctx = device->context; |
| Uint8 rumble_data[3]; |
| |
| if (!ctx->rumble_update_pending) { |
| return 0; |
| } |
| |
| rumble_data[0] = 0x01; /* enable */ |
| rumble_data[1] = ctx->left_motor_amplitude; |
| rumble_data[2] = ctx->right_motor_amplitude; |
| |
| ctx->rumble_update_pending = SDL_FALSE; |
| ctx->last_rumble_time = SDL_GetTicks(); |
| |
| return HIDAPI_DriverShield_SendCommand(device, CMD_RUMBLE, rumble_data, sizeof(rumble_data)); |
| } |
| |
| static int HIDAPI_DriverShield_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble) |
| { |
| if (device->product_id == USB_PRODUCT_NVIDIA_SHIELD_CONTROLLER_V103) { |
| Uint8 rumble_packet[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
| |
| rumble_packet[2] = (low_frequency_rumble >> 8); |
| rumble_packet[4] = (high_frequency_rumble >> 8); |
| |
| if (SDL_HIDAPI_SendRumble(device, rumble_packet, sizeof(rumble_packet)) != sizeof(rumble_packet)) { |
| return SDL_SetError("Couldn't send rumble packet"); |
| } |
| return 0; |
| |
| } else { |
| SDL_DriverShield_Context *ctx = device->context; |
| |
| /* The rumble motors are quite intense, so tone down the intensity like the official driver does */ |
| ctx->left_motor_amplitude = low_frequency_rumble >> 11; |
| ctx->right_motor_amplitude = high_frequency_rumble >> 11; |
| ctx->rumble_update_pending = SDL_TRUE; |
| |
| if (ctx->rumble_report_pending) { |
| /* We will service this after the hardware acknowledges the previous request */ |
| return 0; |
| } |
| |
| return HIDAPI_DriverShield_SendNextRumble(device); |
| } |
| } |
| |
| static int HIDAPI_DriverShield_RumbleJoystickTriggers(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 left_rumble, Uint16 right_rumble) |
| { |
| return SDL_Unsupported(); |
| } |
| |
| static Uint32 HIDAPI_DriverShield_GetJoystickCapabilities(SDL_HIDAPI_Device *device, SDL_Joystick *joystick) |
| { |
| return SDL_JOYCAP_RUMBLE; |
| } |
| |
| static int HIDAPI_DriverShield_SetJoystickLED(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint8 red, Uint8 green, Uint8 blue) |
| { |
| return SDL_Unsupported(); |
| } |
| |
| static int HIDAPI_DriverShield_SendJoystickEffect(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, const void *data, int size) |
| { |
| const Uint8 *data_bytes = data; |
| |
| if (size > 1) { |
| /* Single command byte followed by a variable length payload */ |
| return HIDAPI_DriverShield_SendCommand(device, data_bytes[0], &data_bytes[1], size - 1); |
| } else if (size == 1) { |
| /* Single command byte with no payload */ |
| return HIDAPI_DriverShield_SendCommand(device, data_bytes[0], NULL, 0); |
| } else { |
| return SDL_SetError("Effect data must at least contain a command byte"); |
| } |
| } |
| |
| static int HIDAPI_DriverShield_SetJoystickSensorsEnabled(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, SDL_bool enabled) |
| { |
| return SDL_Unsupported(); |
| } |
| |
| static void HIDAPI_DriverShield_HandleStatePacketV103(SDL_Joystick *joystick, SDL_DriverShield_Context *ctx, Uint8 *data, int size) |
| { |
| if (ctx->last_state[3] != data[3]) { |
| SDL_bool dpad_up = SDL_FALSE; |
| SDL_bool dpad_down = SDL_FALSE; |
| SDL_bool dpad_left = SDL_FALSE; |
| SDL_bool dpad_right = SDL_FALSE; |
| |
| switch (data[3]) { |
| case 0: |
| dpad_up = SDL_TRUE; |
| break; |
| case 1: |
| dpad_up = SDL_TRUE; |
| dpad_right = SDL_TRUE; |
| break; |
| case 2: |
| dpad_right = SDL_TRUE; |
| break; |
| case 3: |
| dpad_right = SDL_TRUE; |
| dpad_down = SDL_TRUE; |
| break; |
| case 4: |
| dpad_down = SDL_TRUE; |
| break; |
| case 5: |
| dpad_left = SDL_TRUE; |
| dpad_down = SDL_TRUE; |
| break; |
| case 6: |
| dpad_left = SDL_TRUE; |
| break; |
| case 7: |
| dpad_up = SDL_TRUE; |
| dpad_left = SDL_TRUE; |
| break; |
| default: |
| break; |
| } |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_DOWN, dpad_down); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_UP, dpad_up); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_RIGHT, dpad_right); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_LEFT, dpad_left); |
| } |
| |
| if (ctx->last_state[1] != data[1]) { |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_A, (data[1] & 0x01) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_B, (data[1] & 0x02) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_X, (data[1] & 0x04) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_Y, (data[1] & 0x08) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_LEFTSHOULDER, (data[1] & 0x10) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER, (data[1] & 0x20) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_LEFTSTICK, (data[1] & 0x40) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_RIGHTSTICK, (data[1] & 0x80) ? SDL_PRESSED : SDL_RELEASED); |
| } |
| |
| if (ctx->last_state[2] != data[2]) { |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_START, (data[2] & 0x02) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_SHIELD_V103_PLUS, (data[2] & 0x08) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_SHIELD_V103_MINUS, (data[2] & 0x10) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_GUIDE, (data[2] & 0x20) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_BACK, (data[2] & 0x40) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_MISC1, (data[2] & 0x80) ? SDL_PRESSED : SDL_RELEASED); |
| } |
| |
| SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_LEFTX, SDL_SwapLE16(*(Sint16 *)&data[4]) - 0x8000); |
| SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_LEFTY, SDL_SwapLE16(*(Sint16 *)&data[6]) - 0x8000); |
| |
| SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTX, SDL_SwapLE16(*(Sint16 *)&data[8]) - 0x8000); |
| SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTY, SDL_SwapLE16(*(Sint16 *)&data[10]) - 0x8000); |
| |
| SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERLEFT, SDL_SwapLE16(*(Sint16 *)&data[12]) - 0x8000); |
| SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERRIGHT, SDL_SwapLE16(*(Sint16 *)&data[14]) - 0x8000); |
| |
| SDL_memcpy(ctx->last_state, data, SDL_min(size, sizeof(ctx->last_state))); |
| } |
| |
| #undef clamp |
| #define clamp(val, min, max) (((val) > (max)) ? (max) : (((val) < (min)) ? (min) : (val))) |
| |
| static void HIDAPI_DriverShield_HandleTouchPacketV103(SDL_Joystick *joystick, SDL_DriverShield_Context *ctx, const Uint8 *data, int size) |
| { |
| Uint8 touchpad_state; |
| float touchpad_x, touchpad_y; |
| |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_SHIELD_V103_TOUCHPAD, (data[1] & 0x01) ? SDL_PRESSED : SDL_RELEASED); |
| |
| /* It's a triangular pad, but just use the center as the usable touch area */ |
| touchpad_state = !(data[1] & 0x80) ? SDL_PRESSED : SDL_RELEASED; |
| touchpad_x = clamp((float)(data[2] - 0x70) / 0x50, 0.0f, 1.0f); |
| touchpad_y = clamp((float)(data[4] - 0x40) / 0x15, 0.0f, 1.0f); |
| SDL_PrivateJoystickTouchpad(joystick, 0, 0, touchpad_state, touchpad_x, touchpad_y, touchpad_state ? 1.0f : 0.0f); |
| } |
| |
| static void HIDAPI_DriverShield_HandleStatePacketV104(SDL_Joystick *joystick, SDL_DriverShield_Context *ctx, Uint8 *data, int size) |
| { |
| if (size < 23) { |
| return; |
| } |
| |
| if (ctx->last_state[2] != data[2]) { |
| SDL_bool dpad_up = SDL_FALSE; |
| SDL_bool dpad_down = SDL_FALSE; |
| SDL_bool dpad_left = SDL_FALSE; |
| SDL_bool dpad_right = SDL_FALSE; |
| |
| switch (data[2]) { |
| case 0: |
| dpad_up = SDL_TRUE; |
| break; |
| case 1: |
| dpad_up = SDL_TRUE; |
| dpad_right = SDL_TRUE; |
| break; |
| case 2: |
| dpad_right = SDL_TRUE; |
| break; |
| case 3: |
| dpad_right = SDL_TRUE; |
| dpad_down = SDL_TRUE; |
| break; |
| case 4: |
| dpad_down = SDL_TRUE; |
| break; |
| case 5: |
| dpad_left = SDL_TRUE; |
| dpad_down = SDL_TRUE; |
| break; |
| case 6: |
| dpad_left = SDL_TRUE; |
| break; |
| case 7: |
| dpad_up = SDL_TRUE; |
| dpad_left = SDL_TRUE; |
| break; |
| default: |
| break; |
| } |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_DOWN, dpad_down); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_UP, dpad_up); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_RIGHT, dpad_right); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_LEFT, dpad_left); |
| } |
| |
| if (ctx->last_state[3] != data[3]) { |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_A, (data[3] & 0x01) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_B, (data[3] & 0x02) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_X, (data[3] & 0x04) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_Y, (data[3] & 0x08) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_LEFTSHOULDER, (data[3] & 0x10) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER, (data[3] & 0x20) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_LEFTSTICK, (data[3] & 0x40) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_RIGHTSTICK, (data[3] & 0x80) ? SDL_PRESSED : SDL_RELEASED); |
| } |
| |
| if (ctx->last_state[4] != data[4]) { |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_START, (data[4] & 0x01) ? SDL_PRESSED : SDL_RELEASED); |
| } |
| |
| SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_LEFTX, SDL_SwapLE16(*(Sint16 *)&data[9]) - 0x8000); |
| SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_LEFTY, SDL_SwapLE16(*(Sint16 *)&data[11]) - 0x8000); |
| |
| SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTX, SDL_SwapLE16(*(Sint16 *)&data[13]) - 0x8000); |
| SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTY, SDL_SwapLE16(*(Sint16 *)&data[15]) - 0x8000); |
| |
| SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERLEFT, SDL_SwapLE16(*(Sint16 *)&data[19]) - 0x8000); |
| SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERRIGHT, SDL_SwapLE16(*(Sint16 *)&data[21]) - 0x8000); |
| |
| if (ctx->last_state[17] != data[17]) { |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_MISC1, (data[17] & 0x01) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_BACK, (data[17] & 0x02) ? SDL_PRESSED : SDL_RELEASED); |
| SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_GUIDE, (data[17] & 0x04) ? SDL_PRESSED : SDL_RELEASED); |
| } |
| |
| SDL_memcpy(ctx->last_state, data, SDL_min(size, sizeof(ctx->last_state))); |
| } |
| |
| static SDL_bool HIDAPI_DriverShield_UpdateDevice(SDL_HIDAPI_Device *device) |
| { |
| SDL_DriverShield_Context *ctx = (SDL_DriverShield_Context *)device->context; |
| SDL_Joystick *joystick = NULL; |
| Uint8 data[USB_PACKET_LENGTH]; |
| int size = 0; |
| ShieldCommandReport_t *cmd_resp_report; |
| |
| if (device->num_joysticks > 0) { |
| joystick = SDL_JoystickFromInstanceID(device->joysticks[0]); |
| } else { |
| return SDL_FALSE; |
| } |
| |
| while ((size = SDL_hid_read_timeout(device->dev, data, sizeof(data), 0)) > 0) { |
| #ifdef DEBUG_SHIELD_PROTOCOL |
| HIDAPI_DumpPacket("NVIDIA SHIELD packet: size = %d", data, size); |
| #endif |
| |
| /* Byte 0 is HID report ID */ |
| switch (data[0]) { |
| case k_ShieldReportIdControllerState: |
| if (!joystick) { |
| break; |
| } |
| if (size == 16) { |
| HIDAPI_DriverShield_HandleStatePacketV103(joystick, ctx, data, size); |
| } else { |
| HIDAPI_DriverShield_HandleStatePacketV104(joystick, ctx, data, size); |
| } |
| break; |
| case k_ShieldReportIdControllerTouch: |
| if (!joystick) { |
| break; |
| } |
| HIDAPI_DriverShield_HandleTouchPacketV103(joystick, ctx, data, size); |
| break; |
| case k_ShieldReportIdCommandResponse: |
| cmd_resp_report = (ShieldCommandReport_t *)data; |
| switch (cmd_resp_report->cmd) { |
| case CMD_RUMBLE: |
| ctx->rumble_report_pending = SDL_FALSE; |
| HIDAPI_DriverShield_SendNextRumble(device); |
| break; |
| case CMD_CHARGE_STATE: |
| ctx->charging = cmd_resp_report->payload[0] != 0; |
| if (joystick) { |
| SDL_PrivateJoystickBatteryLevel(joystick, ctx->charging ? SDL_JOYSTICK_POWER_WIRED : ctx->battery_level); |
| } |
| break; |
| case CMD_BATTERY_STATE: |
| switch (cmd_resp_report->payload[2]) { |
| case 0: |
| ctx->battery_level = SDL_JOYSTICK_POWER_EMPTY; |
| break; |
| case 1: |
| ctx->battery_level = SDL_JOYSTICK_POWER_LOW; |
| break; |
| case 2: /* 40% */ |
| case 3: /* 60% */ |
| case 4: /* 80% */ |
| ctx->battery_level = SDL_JOYSTICK_POWER_MEDIUM; |
| break; |
| case 5: |
| ctx->battery_level = SDL_JOYSTICK_POWER_FULL; |
| break; |
| default: |
| ctx->battery_level = SDL_JOYSTICK_POWER_UNKNOWN; |
| break; |
| } |
| if (joystick) { |
| SDL_PrivateJoystickBatteryLevel(joystick, ctx->charging ? SDL_JOYSTICK_POWER_WIRED : ctx->battery_level); |
| } |
| break; |
| } |
| break; |
| } |
| } |
| |
| /* Ask for battery state again if we're due for an update */ |
| if (joystick && SDL_TICKS_PASSED(SDL_GetTicks(), ctx->last_battery_query_time + BATTERY_POLL_INTERVAL_MS)) { |
| ctx->last_battery_query_time = SDL_GetTicks(); |
| HIDAPI_DriverShield_SendCommand(device, CMD_BATTERY_STATE, NULL, 0); |
| } |
| |
| /* Retransmit rumble packets if they've lasted longer than the hardware supports */ |
| if ((ctx->left_motor_amplitude != 0 || ctx->right_motor_amplitude != 0) && |
| SDL_TICKS_PASSED(SDL_GetTicks(), ctx->last_rumble_time + RUMBLE_REFRESH_INTERVAL_MS)) { |
| ctx->rumble_update_pending = SDL_TRUE; |
| HIDAPI_DriverShield_SendNextRumble(device); |
| } |
| |
| if (size < 0) { |
| /* Read error, device is disconnected */ |
| HIDAPI_JoystickDisconnected(device, device->joysticks[0]); |
| } |
| return size >= 0; |
| } |
| |
| static void HIDAPI_DriverShield_CloseJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick) |
| { |
| } |
| |
| static void HIDAPI_DriverShield_FreeDevice(SDL_HIDAPI_Device *device) |
| { |
| } |
| |
| SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverShield = { |
| SDL_HINT_JOYSTICK_HIDAPI_SHIELD, |
| SDL_TRUE, |
| HIDAPI_DriverShield_RegisterHints, |
| HIDAPI_DriverShield_UnregisterHints, |
| HIDAPI_DriverShield_IsEnabled, |
| HIDAPI_DriverShield_IsSupportedDevice, |
| HIDAPI_DriverShield_InitDevice, |
| HIDAPI_DriverShield_GetDevicePlayerIndex, |
| HIDAPI_DriverShield_SetDevicePlayerIndex, |
| HIDAPI_DriverShield_UpdateDevice, |
| HIDAPI_DriverShield_OpenJoystick, |
| HIDAPI_DriverShield_RumbleJoystick, |
| HIDAPI_DriverShield_RumbleJoystickTriggers, |
| HIDAPI_DriverShield_GetJoystickCapabilities, |
| HIDAPI_DriverShield_SetJoystickLED, |
| HIDAPI_DriverShield_SendJoystickEffect, |
| HIDAPI_DriverShield_SetJoystickSensorsEnabled, |
| HIDAPI_DriverShield_CloseJoystick, |
| HIDAPI_DriverShield_FreeDevice, |
| }; |
| |
| #endif /* SDL_JOYSTICK_HIDAPI_SHIELD */ |
| |
| #endif /* SDL_JOYSTICK_HIDAPI */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |
