603 lines
23 KiB
C
603 lines
23 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2023 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_SHIELD
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/* Define this if you want to log all packets from the controller */
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/*#define DEBUG_SHIELD_PROTOCOL*/
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#define CMD_BATTERY_STATE 0x07
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#define CMD_RUMBLE 0x39
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#define CMD_CHARGE_STATE 0x3A
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/* Milliseconds between polls of battery state */
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#define BATTERY_POLL_INTERVAL_MS 60000
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/* Milliseconds between retransmission of rumble to keep motors running */
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#define RUMBLE_REFRESH_INTERVAL_MS 500
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/* Reports that are too small are dropped over Bluetooth */
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#define HID_REPORT_SIZE 33
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enum
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{
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SDL_CONTROLLER_BUTTON_SHIELD_V103_TOUCHPAD = SDL_GAMEPAD_BUTTON_MISC1 + 1,
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SDL_CONTROLLER_BUTTON_SHIELD_V103_MINUS,
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SDL_CONTROLLER_BUTTON_SHIELD_V103_PLUS,
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SDL_CONTROLLER_NUM_SHIELD_V103_BUTTONS,
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SDL_CONTROLLER_NUM_SHIELD_V104_BUTTONS = SDL_GAMEPAD_BUTTON_MISC1 + 1,
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};
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typedef enum
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{
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k_ShieldReportIdControllerState = 0x01,
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k_ShieldReportIdControllerTouch = 0x02,
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k_ShieldReportIdCommandResponse = 0x03,
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k_ShieldReportIdCommandRequest = 0x04,
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} EShieldReportId;
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/* This same report structure is used for both requests and responses */
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typedef struct
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{
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Uint8 report_id;
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Uint8 cmd;
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Uint8 seq_num;
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Uint8 payload[HID_REPORT_SIZE - 3];
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} ShieldCommandReport_t;
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SDL_COMPILE_TIME_ASSERT(ShieldCommandReport_t, sizeof(ShieldCommandReport_t) == HID_REPORT_SIZE);
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typedef struct
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{
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Uint8 seq_num;
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SDL_JoystickPowerLevel battery_level;
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SDL_bool charging;
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Uint64 last_battery_query_time;
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SDL_bool rumble_report_pending;
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SDL_bool rumble_update_pending;
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Uint8 left_motor_amplitude;
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Uint8 right_motor_amplitude;
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Uint64 last_rumble_time;
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Uint8 last_state[USB_PACKET_LENGTH];
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} SDL_DriverShield_Context;
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static void HIDAPI_DriverShield_RegisterHints(SDL_HintCallback callback, void *userdata)
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{
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SDL_AddHintCallback(SDL_HINT_JOYSTICK_HIDAPI_SHIELD, callback, userdata);
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}
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static void HIDAPI_DriverShield_UnregisterHints(SDL_HintCallback callback, void *userdata)
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{
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SDL_DelHintCallback(SDL_HINT_JOYSTICK_HIDAPI_SHIELD, callback, userdata);
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}
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static SDL_bool HIDAPI_DriverShield_IsEnabled(void)
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{
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return SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI_SHIELD, SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI, SDL_HIDAPI_DEFAULT));
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}
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static SDL_bool HIDAPI_DriverShield_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 (type == SDL_GAMEPAD_TYPE_NVIDIA_SHIELD) ? SDL_TRUE : SDL_FALSE;
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}
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static SDL_bool HIDAPI_DriverShield_InitDevice(SDL_HIDAPI_Device *device)
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{
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SDL_DriverShield_Context *ctx;
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ctx = (SDL_DriverShield_Context *)SDL_calloc(1, sizeof(*ctx));
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if (ctx == NULL) {
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SDL_OutOfMemory();
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return SDL_FALSE;
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}
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device->context = ctx;
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device->type = SDL_GAMEPAD_TYPE_NVIDIA_SHIELD;
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HIDAPI_SetDeviceName(device, "NVIDIA SHIELD Controller");
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return HIDAPI_JoystickConnected(device, NULL);
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}
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static int HIDAPI_DriverShield_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_DriverShield_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 int HIDAPI_DriverShield_SendCommand(SDL_HIDAPI_Device *device, Uint8 cmd, const void *data, int size)
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{
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SDL_DriverShield_Context *ctx = (SDL_DriverShield_Context *)device->context;
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ShieldCommandReport_t cmd_pkt;
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if (size > sizeof(cmd_pkt.payload)) {
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return SDL_SetError("Command data exceeds HID report size");
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}
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if (SDL_HIDAPI_LockRumble() != 0) {
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return -1;
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}
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cmd_pkt.report_id = k_ShieldReportIdCommandRequest;
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cmd_pkt.cmd = cmd;
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cmd_pkt.seq_num = ctx->seq_num++;
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if (data) {
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SDL_memcpy(cmd_pkt.payload, data, size);
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}
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/* Zero unused data in the payload */
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if (size != sizeof(cmd_pkt.payload)) {
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SDL_memset(&cmd_pkt.payload[size], 0, sizeof(cmd_pkt.payload) - size);
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}
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if (SDL_HIDAPI_SendRumbleAndUnlock(device, (Uint8 *)&cmd_pkt, sizeof(cmd_pkt)) != sizeof(cmd_pkt)) {
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return SDL_SetError("Couldn't send command packet");
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}
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return 0;
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}
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static SDL_bool HIDAPI_DriverShield_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
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{
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SDL_DriverShield_Context *ctx = (SDL_DriverShield_Context *)device->context;
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SDL_AssertJoysticksLocked();
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ctx->rumble_report_pending = SDL_FALSE;
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ctx->rumble_update_pending = SDL_FALSE;
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ctx->left_motor_amplitude = 0;
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ctx->right_motor_amplitude = 0;
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ctx->last_rumble_time = 0;
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SDL_zeroa(ctx->last_state);
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/* Initialize the joystick capabilities */
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if (device->product_id == USB_PRODUCT_NVIDIA_SHIELD_CONTROLLER_V103) {
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joystick->nbuttons = SDL_CONTROLLER_NUM_SHIELD_V103_BUTTONS;
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joystick->naxes = SDL_GAMEPAD_AXIS_MAX;
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joystick->epowerlevel = SDL_JOYSTICK_POWER_WIRED;
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SDL_PrivateJoystickAddTouchpad(joystick, 1);
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} else {
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joystick->nbuttons = SDL_CONTROLLER_NUM_SHIELD_V104_BUTTONS;
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joystick->naxes = SDL_GAMEPAD_AXIS_MAX;
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joystick->epowerlevel = SDL_JOYSTICK_POWER_UNKNOWN;
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}
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/* Request battery and charging info */
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ctx->last_battery_query_time = SDL_GetTicks();
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HIDAPI_DriverShield_SendCommand(device, CMD_CHARGE_STATE, NULL, 0);
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HIDAPI_DriverShield_SendCommand(device, CMD_BATTERY_STATE, NULL, 0);
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return SDL_TRUE;
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}
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static int HIDAPI_DriverShield_SendNextRumble(SDL_HIDAPI_Device *device)
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{
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SDL_DriverShield_Context *ctx = device->context;
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Uint8 rumble_data[3];
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if (!ctx->rumble_update_pending) {
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return 0;
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}
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rumble_data[0] = 0x01; /* enable */
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rumble_data[1] = ctx->left_motor_amplitude;
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rumble_data[2] = ctx->right_motor_amplitude;
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ctx->rumble_update_pending = SDL_FALSE;
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ctx->last_rumble_time = SDL_GetTicks();
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return HIDAPI_DriverShield_SendCommand(device, CMD_RUMBLE, rumble_data, sizeof(rumble_data));
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}
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static int HIDAPI_DriverShield_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
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{
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if (device->product_id == USB_PRODUCT_NVIDIA_SHIELD_CONTROLLER_V103) {
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Uint8 rumble_packet[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
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rumble_packet[2] = (low_frequency_rumble >> 8);
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rumble_packet[4] = (high_frequency_rumble >> 8);
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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 0;
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} else {
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SDL_DriverShield_Context *ctx = device->context;
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/* The rumble motors are quite intense, so tone down the intensity like the official driver does */
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ctx->left_motor_amplitude = low_frequency_rumble >> 11;
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ctx->right_motor_amplitude = high_frequency_rumble >> 11;
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ctx->rumble_update_pending = SDL_TRUE;
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if (ctx->rumble_report_pending) {
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/* We will service this after the hardware acknowledges the previous request */
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return 0;
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}
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return HIDAPI_DriverShield_SendNextRumble(device);
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}
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}
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static int HIDAPI_DriverShield_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_DriverShield_GetJoystickCapabilities(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
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{
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return SDL_JOYCAP_RUMBLE;
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}
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static int HIDAPI_DriverShield_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 int HIDAPI_DriverShield_SendJoystickEffect(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, const void *data, int size)
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{
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const Uint8 *data_bytes = data;
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if (size > 1) {
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/* Single command byte followed by a variable length payload */
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return HIDAPI_DriverShield_SendCommand(device, data_bytes[0], &data_bytes[1], size - 1);
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} else if (size == 1) {
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/* Single command byte with no payload */
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return HIDAPI_DriverShield_SendCommand(device, data_bytes[0], NULL, 0);
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} else {
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return SDL_SetError("Effect data must at least contain a command byte");
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}
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}
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static int HIDAPI_DriverShield_SetJoystickSensorsEnabled(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, SDL_bool enabled)
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{
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return SDL_Unsupported();
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}
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static void HIDAPI_DriverShield_HandleStatePacketV103(SDL_Joystick *joystick, SDL_DriverShield_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[3] != data[3]) {
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SDL_bool dpad_up = SDL_FALSE;
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SDL_bool dpad_down = SDL_FALSE;
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SDL_bool dpad_left = SDL_FALSE;
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SDL_bool dpad_right = SDL_FALSE;
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switch (data[3]) {
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case 0:
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dpad_up = SDL_TRUE;
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break;
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case 1:
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dpad_up = SDL_TRUE;
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dpad_right = SDL_TRUE;
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break;
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case 2:
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dpad_right = SDL_TRUE;
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break;
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case 3:
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dpad_right = SDL_TRUE;
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dpad_down = SDL_TRUE;
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break;
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case 4:
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dpad_down = SDL_TRUE;
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break;
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case 5:
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dpad_left = SDL_TRUE;
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dpad_down = SDL_TRUE;
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break;
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case 6:
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dpad_left = SDL_TRUE;
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break;
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case 7:
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dpad_up = SDL_TRUE;
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dpad_left = SDL_TRUE;
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break;
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default:
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break;
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}
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_DPAD_DOWN, dpad_down);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_DPAD_UP, dpad_up);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_DPAD_RIGHT, dpad_right);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_DPAD_LEFT, dpad_left);
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}
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if (ctx->last_state[1] != data[1]) {
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_A, (data[1] & 0x01) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_B, (data[1] & 0x02) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_X, (data[1] & 0x04) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_Y, (data[1] & 0x08) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_SHOULDER, (data[1] & 0x10) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER, (data[1] & 0x20) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_STICK, (data[1] & 0x40) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_STICK, (data[1] & 0x80) ? SDL_PRESSED : SDL_RELEASED);
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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_START, (data[2] & 0x02) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_CONTROLLER_BUTTON_SHIELD_V103_PLUS, (data[2] & 0x08) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_CONTROLLER_BUTTON_SHIELD_V103_MINUS, (data[2] & 0x10) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_GUIDE, (data[2] & 0x20) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_BACK, (data[2] & 0x40) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_MISC1, (data[2] & 0x80) ? SDL_PRESSED : SDL_RELEASED);
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}
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFTX, SDL_SwapLE16(*(Sint16 *)&data[4]) - 0x8000);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFTY, SDL_SwapLE16(*(Sint16 *)&data[6]) - 0x8000);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHTX, SDL_SwapLE16(*(Sint16 *)&data[8]) - 0x8000);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHTY, SDL_SwapLE16(*(Sint16 *)&data[10]) - 0x8000);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFT_TRIGGER, SDL_SwapLE16(*(Sint16 *)&data[12]) - 0x8000);
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SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHT_TRIGGER, SDL_SwapLE16(*(Sint16 *)&data[14]) - 0x8000);
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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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#undef clamp
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#define clamp(val, min, max) (((val) > (max)) ? (max) : (((val) < (min)) ? (min) : (val)))
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static void HIDAPI_DriverShield_HandleTouchPacketV103(SDL_Joystick *joystick, SDL_DriverShield_Context *ctx, const Uint8 *data, int size)
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{
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Uint8 touchpad_state;
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float touchpad_x, touchpad_y;
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Uint64 timestamp = SDL_GetTicksNS();
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SDL_SendJoystickButton(timestamp, joystick, SDL_CONTROLLER_BUTTON_SHIELD_V103_TOUCHPAD, (data[1] & 0x01) ? SDL_PRESSED : SDL_RELEASED);
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/* It's a triangular pad, but just use the center as the usable touch area */
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touchpad_state = !(data[1] & 0x80) ? SDL_PRESSED : SDL_RELEASED;
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touchpad_x = clamp((float)(data[2] - 0x70) / 0x50, 0.0f, 1.0f);
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touchpad_y = clamp((float)(data[4] - 0x40) / 0x15, 0.0f, 1.0f);
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SDL_SendJoystickTouchpad(timestamp, joystick, 0, 0, touchpad_state, touchpad_x, touchpad_y, touchpad_state ? 1.0f : 0.0f);
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}
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static void HIDAPI_DriverShield_HandleStatePacketV104(SDL_Joystick *joystick, SDL_DriverShield_Context *ctx, Uint8 *data, int size)
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{
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Uint64 timestamp = SDL_GetTicksNS();
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if (size < 23) {
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return;
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}
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if (ctx->last_state[2] != data[2]) {
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SDL_bool dpad_up = SDL_FALSE;
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SDL_bool dpad_down = SDL_FALSE;
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SDL_bool dpad_left = SDL_FALSE;
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SDL_bool dpad_right = SDL_FALSE;
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switch (data[2]) {
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case 0:
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dpad_up = SDL_TRUE;
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break;
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case 1:
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dpad_up = SDL_TRUE;
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dpad_right = SDL_TRUE;
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break;
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case 2:
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dpad_right = SDL_TRUE;
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break;
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case 3:
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dpad_right = SDL_TRUE;
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dpad_down = SDL_TRUE;
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break;
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case 4:
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dpad_down = SDL_TRUE;
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break;
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case 5:
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dpad_left = SDL_TRUE;
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dpad_down = SDL_TRUE;
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break;
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case 6:
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dpad_left = SDL_TRUE;
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|
break;
|
|
case 7:
|
|
dpad_up = SDL_TRUE;
|
|
dpad_left = SDL_TRUE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_DPAD_DOWN, dpad_down);
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_DPAD_UP, dpad_up);
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_DPAD_RIGHT, dpad_right);
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_DPAD_LEFT, dpad_left);
|
|
}
|
|
|
|
if (ctx->last_state[3] != data[3]) {
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_A, (data[3] & 0x01) ? SDL_PRESSED : SDL_RELEASED);
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_B, (data[3] & 0x02) ? SDL_PRESSED : SDL_RELEASED);
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_X, (data[3] & 0x04) ? SDL_PRESSED : SDL_RELEASED);
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_Y, (data[3] & 0x08) ? SDL_PRESSED : SDL_RELEASED);
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_SHOULDER, (data[3] & 0x10) ? SDL_PRESSED : SDL_RELEASED);
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER, (data[3] & 0x20) ? SDL_PRESSED : SDL_RELEASED);
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_STICK, (data[3] & 0x40) ? SDL_PRESSED : SDL_RELEASED);
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_STICK, (data[3] & 0x80) ? SDL_PRESSED : SDL_RELEASED);
|
|
}
|
|
|
|
if (ctx->last_state[4] != data[4]) {
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_START, (data[4] & 0x01) ? SDL_PRESSED : SDL_RELEASED);
|
|
}
|
|
|
|
SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFTX, SDL_SwapLE16(*(Sint16 *)&data[9]) - 0x8000);
|
|
SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFTY, SDL_SwapLE16(*(Sint16 *)&data[11]) - 0x8000);
|
|
|
|
SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHTX, SDL_SwapLE16(*(Sint16 *)&data[13]) - 0x8000);
|
|
SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHTY, SDL_SwapLE16(*(Sint16 *)&data[15]) - 0x8000);
|
|
|
|
SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_LEFT_TRIGGER, SDL_SwapLE16(*(Sint16 *)&data[19]) - 0x8000);
|
|
SDL_SendJoystickAxis(timestamp, joystick, SDL_GAMEPAD_AXIS_RIGHT_TRIGGER, SDL_SwapLE16(*(Sint16 *)&data[21]) - 0x8000);
|
|
|
|
if (ctx->last_state[17] != data[17]) {
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_MISC1, (data[17] & 0x01) ? SDL_PRESSED : SDL_RELEASED);
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_BACK, (data[17] & 0x02) ? SDL_PRESSED : SDL_RELEASED);
|
|
SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_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_GetJoystickFromInstanceID(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 == NULL) {
|
|
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 == NULL) {
|
|
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_SendJoystickBatteryLevel(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_SendJoystickBatteryLevel(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_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_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 */
|