331 lines
12 KiB
C
331 lines
12 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_STADIA
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/* Define this if you want to log all packets from the controller */
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/*#define DEBUG_STADIA_PROTOCOL*/
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enum
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{
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SDL_CONTROLLER_BUTTON_STADIA_SHARE = 15,
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SDL_CONTROLLER_BUTTON_STADIA_GOOGLE_ASSISTANT,
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SDL_CONTROLLER_NUM_STADIA_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_DriverStadia_Context;
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static void HIDAPI_DriverStadia_RegisterHints(SDL_HintCallback callback, void *userdata)
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{
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SDL_AddHintCallback(SDL_HINT_JOYSTICK_HIDAPI_STADIA, callback, userdata);
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}
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static void HIDAPI_DriverStadia_UnregisterHints(SDL_HintCallback callback, void *userdata)
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{
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SDL_DelHintCallback(SDL_HINT_JOYSTICK_HIDAPI_STADIA, callback, userdata);
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}
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static SDL_bool HIDAPI_DriverStadia_IsEnabled(void)
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{
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return SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI_STADIA, SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI, SDL_HIDAPI_DEFAULT));
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}
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static SDL_bool HIDAPI_DriverStadia_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_GOOGLE_STADIA) ? SDL_TRUE : SDL_FALSE;
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}
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static SDL_bool HIDAPI_DriverStadia_InitDevice(SDL_HIDAPI_Device *device)
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{
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SDL_DriverStadia_Context *ctx;
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ctx = (SDL_DriverStadia_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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/* Check whether this is connected via USB or Bluetooth */
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{
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Uint8 rumble_packet[] = { 0x05, 0x00, 0x00, 0x00, 0x00 };
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if (SDL_hid_write(device->dev, rumble_packet, sizeof(rumble_packet)) < 0) {
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device->is_bluetooth = SDL_TRUE;
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}
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}
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device->type = SDL_GAMEPAD_TYPE_GOOGLE_STADIA;
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HIDAPI_SetDeviceName(device, "Google Stadia Controller");
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return HIDAPI_JoystickConnected(device, NULL);
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}
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static int HIDAPI_DriverStadia_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_DriverStadia_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 SDL_bool HIDAPI_DriverStadia_OpenJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
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{
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SDL_DriverStadia_Context *ctx = (SDL_DriverStadia_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_CONTROLLER_NUM_STADIA_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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return SDL_TRUE;
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}
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static int HIDAPI_DriverStadia_RumbleJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
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{
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Uint8 rumble_packet[] = { 0x05, 0x00, 0x00, 0x00, 0x00 };
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if (device->is_bluetooth) {
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return SDL_Unsupported();
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}
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rumble_packet[1] = (low_frequency_rumble & 0xFF);
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rumble_packet[2] = (low_frequency_rumble >> 8);
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rumble_packet[3] = (high_frequency_rumble & 0xFF);
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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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}
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static int HIDAPI_DriverStadia_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_DriverStadia_GetJoystickCapabilities(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
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{
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Uint32 caps = 0;
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if (!device->is_bluetooth) {
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caps |= SDL_JOYCAP_RUMBLE;
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}
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return caps;
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}
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static int HIDAPI_DriverStadia_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_DriverStadia_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 int HIDAPI_DriverStadia_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_DriverStadia_HandleStatePacket(SDL_Joystick *joystick, SDL_DriverStadia_Context *ctx, Uint8 *data, int size)
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{
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Sint16 axis;
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Uint64 timestamp = SDL_GetTicksNS();
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// The format is the same but the original FW will send 10 bytes and January '21 FW update will send 11
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if (size < 10 || data[0] != 0x03) {
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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[1] != data[1]) {
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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[1]) {
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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[2] != data[2]) {
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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_GUIDE, (data[2] & 0x10) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_START, (data[2] & 0x20) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_STICK, (data[2] & 0x80) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_CONTROLLER_BUTTON_STADIA_SHARE, (data[2] & 0x01) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_CONTROLLER_BUTTON_STADIA_GOOGLE_ASSISTANT, (data[2] & 0x02) ? SDL_PRESSED : SDL_RELEASED);
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}
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if (ctx->last_state[3] != data[3]) {
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_A, (data[3] & 0x40) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_B, (data[3] & 0x20) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_X, (data[3] & 0x10) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_Y, (data[3] & 0x08) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_SHOULDER, (data[3] & 0x04) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER, (data[3] & 0x02) ? SDL_PRESSED : SDL_RELEASED);
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SDL_SendJoystickButton(timestamp, joystick, SDL_GAMEPAD_BUTTON_LEFT_STICK, (data[3] & 0x01) ? SDL_PRESSED : SDL_RELEASED);
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}
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#define READ_STICK_AXIS(offset) \
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(data[offset] == 0x80 ? 0 : (Sint16)HIDAPI_RemapVal((float)((int)data[offset] - 0x80), 0x01 - 0x80, 0xff - 0x80, SDL_MIN_SINT16, SDL_MAX_SINT16))
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{
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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)(((int)data[offset] * 257) - 32768)
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{
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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 SDL_bool HIDAPI_DriverStadia_UpdateDevice(SDL_HIDAPI_Device *device)
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{
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SDL_DriverStadia_Context *ctx = (SDL_DriverStadia_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_GetJoystickFromInstanceID(device->joysticks[0]);
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} else {
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return SDL_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_STADIA_PROTOCOL
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HIDAPI_DumpPacket("Google Stadia packet: size = %d", data, size);
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#endif
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if (joystick == NULL) {
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continue;
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}
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HIDAPI_DriverStadia_HandleStatePacket(joystick, ctx, data, size);
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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_DriverStadia_CloseJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
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{
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}
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static void HIDAPI_DriverStadia_FreeDevice(SDL_HIDAPI_Device *device)
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{
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}
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SDL_HIDAPI_DeviceDriver SDL_HIDAPI_DriverStadia = {
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SDL_HINT_JOYSTICK_HIDAPI_STADIA,
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SDL_TRUE,
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HIDAPI_DriverStadia_RegisterHints,
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HIDAPI_DriverStadia_UnregisterHints,
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HIDAPI_DriverStadia_IsEnabled,
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HIDAPI_DriverStadia_IsSupportedDevice,
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HIDAPI_DriverStadia_InitDevice,
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HIDAPI_DriverStadia_GetDevicePlayerIndex,
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HIDAPI_DriverStadia_SetDevicePlayerIndex,
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HIDAPI_DriverStadia_UpdateDevice,
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HIDAPI_DriverStadia_OpenJoystick,
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HIDAPI_DriverStadia_RumbleJoystick,
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HIDAPI_DriverStadia_RumbleJoystickTriggers,
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HIDAPI_DriverStadia_GetJoystickCapabilities,
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HIDAPI_DriverStadia_SetJoystickLED,
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HIDAPI_DriverStadia_SendJoystickEffect,
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HIDAPI_DriverStadia_SetJoystickSensorsEnabled,
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HIDAPI_DriverStadia_CloseJoystick,
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HIDAPI_DriverStadia_FreeDevice,
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};
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#endif /* SDL_JOYSTICK_HIDAPI_STADIA */
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#endif /* SDL_JOYSTICK_HIDAPI */
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