mirror of
https://github.com/libsdl-org/SDL.git
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aa2e2f4843
This prevents a number of issues where devices are enumerated but not actually able to be opened, like https://github.com/libsdl-org/SDL/issues/5781. We currently leave the devices open, allowing us to more easily do controller feature detection, protocol negotiation, detect dropped Bluetooth connections, etc. with the expectation that the application is likely to open the controllers shortly.
337 lines
11 KiB
C
337 lines
11 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2022 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_events.h"
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#include "SDL_joystick.h"
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#include "SDL_gamecontroller.h"
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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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Uint8 last_state[USB_PACKET_LENGTH];
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} SDL_DriverStadia_Context;
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static void
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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
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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
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HIDAPI_DriverStadia_IsEnabled(void)
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{
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return SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI_STADIA,
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SDL_GetHintBoolean(SDL_HINT_JOYSTICK_HIDAPI,
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SDL_HIDAPI_DEFAULT));
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}
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static SDL_bool
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HIDAPI_DriverStadia_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)
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{
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return (type == SDL_CONTROLLER_TYPE_GOOGLE_STADIA) ? SDL_TRUE : SDL_FALSE;
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}
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static SDL_bool
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HIDAPI_DriverStadia_InitDevice(SDL_HIDAPI_Device *device)
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{
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SDL_DriverStadia_Context *ctx;
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HIDAPI_SetDeviceName(device, "Google Stadia Controller");
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ctx = (SDL_DriverStadia_Context *)SDL_calloc(1, sizeof(*ctx));
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if (!ctx) {
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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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return HIDAPI_JoystickConnected(device, NULL);
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}
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static int
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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
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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
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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_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_CONTROLLER_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
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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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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
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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
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HIDAPI_DriverStadia_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
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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
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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
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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
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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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// 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_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_DOWN, dpad_down);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_UP, dpad_up);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_DPAD_RIGHT, dpad_right);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_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_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_BACK, (data[2] & 0x40) ? SDL_PRESSED : SDL_RELEASED);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_GUIDE, (data[2] & 0x10) ? SDL_PRESSED : SDL_RELEASED);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_START, (data[2] & 0x20) ? SDL_PRESSED : SDL_RELEASED);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_RIGHTSTICK, (data[2] & 0x80) ? SDL_PRESSED : SDL_RELEASED);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_STADIA_SHARE, (data[2] & 0x01) ? SDL_PRESSED : SDL_RELEASED);
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SDL_PrivateJoystickButton(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_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_A, (data[3] & 0x40) ? SDL_PRESSED : SDL_RELEASED);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_B, (data[3] & 0x20) ? SDL_PRESSED : SDL_RELEASED);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_X, (data[3] & 0x10) ? SDL_PRESSED : SDL_RELEASED);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_Y, (data[3] & 0x08) ? SDL_PRESSED : SDL_RELEASED);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_LEFTSHOULDER, (data[3] & 0x04) ? SDL_PRESSED : SDL_RELEASED);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_RIGHTSHOULDER, (data[3] & 0x02) ? SDL_PRESSED : SDL_RELEASED);
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SDL_PrivateJoystickButton(joystick, SDL_CONTROLLER_BUTTON_LEFTSTICK, (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 : \
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(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_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_LEFTX, axis);
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axis = READ_STICK_AXIS(5);
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SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_LEFTY, axis);
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axis = READ_STICK_AXIS(6);
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SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_RIGHTX, axis);
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axis = READ_STICK_AXIS(7);
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SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_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_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERLEFT, axis);
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axis = READ_TRIGGER_AXIS(9);
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SDL_PrivateJoystickAxis(joystick, SDL_CONTROLLER_AXIS_TRIGGERRIGHT, 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
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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_JoystickFromInstanceID(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) {
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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
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HIDAPI_DriverStadia_CloseJoystick(SDL_HIDAPI_Device *device, SDL_Joystick *joystick)
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{
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}
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static void
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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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{
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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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/* vi: set ts=4 sw=4 expandtab: */
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