mirror of
https://github.com/Relintai/sdl2_frt.git
synced 2025-04-12 10:42:01 +02:00
b72938c861
An existing hint lets apps that don't need the timer resolution changed avoid this, to save battery, etc, but this fixes several problems in timing, audio callbacks not firing fast enough, etc. Fixes Bugzilla #2944.
383 lines
12 KiB
C
383 lines
12 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2014 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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#include "SDL_assert.h"
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#include "SDL_hints.h"
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#include "../SDL_sysjoystick.h"
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#include "SDL_windowsjoystick_c.h"
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#include "SDL_xinputjoystick_c.h"
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#if SDL_JOYSTICK_XINPUT
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/*
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* Internal stuff.
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*/
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static SDL_bool s_bXInputEnabled = SDL_TRUE;
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static SDL_bool
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SDL_XInputUseOldJoystickMapping()
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{
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static int s_XInputUseOldJoystickMapping = -1;
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if (s_XInputUseOldJoystickMapping < 0) {
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const char *hint = SDL_GetHint(SDL_HINT_XINPUT_USE_OLD_JOYSTICK_MAPPING);
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s_XInputUseOldJoystickMapping = (hint && *hint == '1') ? 1 : 0;
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}
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return (s_XInputUseOldJoystickMapping > 0);
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}
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SDL_bool SDL_XINPUT_Enabled(void)
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{
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return s_bXInputEnabled;
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}
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int
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SDL_XINPUT_JoystickInit(void)
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{
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const char *env = SDL_GetHint(SDL_HINT_XINPUT_ENABLED);
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if (env && !SDL_atoi(env)) {
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s_bXInputEnabled = SDL_FALSE;
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}
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if (s_bXInputEnabled && WIN_LoadXInputDLL() < 0) {
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s_bXInputEnabled = SDL_FALSE; /* oh well. */
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}
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return 0;
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}
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static char *
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GetXInputName(const Uint8 userid, BYTE SubType)
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{
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char name[32];
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if (SDL_XInputUseOldJoystickMapping()) {
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SDL_snprintf(name, sizeof(name), "X360 Controller #%u", 1 + userid);
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} else {
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switch (SubType) {
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case XINPUT_DEVSUBTYPE_GAMEPAD:
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SDL_snprintf(name, sizeof(name), "XInput Controller #%u", 1 + userid);
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break;
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case XINPUT_DEVSUBTYPE_WHEEL:
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SDL_snprintf(name, sizeof(name), "XInput Wheel #%u", 1 + userid);
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break;
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case XINPUT_DEVSUBTYPE_ARCADE_STICK:
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SDL_snprintf(name, sizeof(name), "XInput ArcadeStick #%u", 1 + userid);
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break;
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case XINPUT_DEVSUBTYPE_FLIGHT_STICK:
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SDL_snprintf(name, sizeof(name), "XInput FlightStick #%u", 1 + userid);
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break;
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case XINPUT_DEVSUBTYPE_DANCE_PAD:
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SDL_snprintf(name, sizeof(name), "XInput DancePad #%u", 1 + userid);
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break;
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case XINPUT_DEVSUBTYPE_GUITAR:
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case XINPUT_DEVSUBTYPE_GUITAR_ALTERNATE:
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case XINPUT_DEVSUBTYPE_GUITAR_BASS:
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SDL_snprintf(name, sizeof(name), "XInput Guitar #%u", 1 + userid);
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break;
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case XINPUT_DEVSUBTYPE_DRUM_KIT:
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SDL_snprintf(name, sizeof(name), "XInput DrumKit #%u", 1 + userid);
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break;
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case XINPUT_DEVSUBTYPE_ARCADE_PAD:
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SDL_snprintf(name, sizeof(name), "XInput ArcadePad #%u", 1 + userid);
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break;
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default:
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SDL_snprintf(name, sizeof(name), "XInput Device #%u", 1 + userid);
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break;
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}
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}
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return SDL_strdup(name);
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}
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static void
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AddXInputDevice(const Uint8 userid, BYTE SubType, JoyStick_DeviceData **pContext)
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{
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JoyStick_DeviceData *pPrevJoystick = NULL;
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JoyStick_DeviceData *pNewJoystick = *pContext;
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if (SDL_XInputUseOldJoystickMapping() && SubType != XINPUT_DEVSUBTYPE_GAMEPAD)
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return;
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if (SubType == XINPUT_DEVSUBTYPE_UNKNOWN)
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return;
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while (pNewJoystick) {
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if (pNewJoystick->bXInputDevice && (pNewJoystick->XInputUserId == userid) && (pNewJoystick->SubType == SubType)) {
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/* if we are replacing the front of the list then update it */
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if (pNewJoystick == *pContext) {
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*pContext = pNewJoystick->pNext;
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} else if (pPrevJoystick) {
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pPrevJoystick->pNext = pNewJoystick->pNext;
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}
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pNewJoystick->pNext = SYS_Joystick;
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SYS_Joystick = pNewJoystick;
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return; /* already in the list. */
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}
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pPrevJoystick = pNewJoystick;
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pNewJoystick = pNewJoystick->pNext;
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}
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pNewJoystick = (JoyStick_DeviceData *)SDL_malloc(sizeof(JoyStick_DeviceData));
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if (!pNewJoystick) {
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return; /* better luck next time? */
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}
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SDL_zerop(pNewJoystick);
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pNewJoystick->joystickname = GetXInputName(userid, SubType);
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if (!pNewJoystick->joystickname) {
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SDL_free(pNewJoystick);
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return; /* better luck next time? */
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}
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pNewJoystick->bXInputDevice = SDL_TRUE;
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if (SDL_XInputUseOldJoystickMapping()) {
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SDL_zero(pNewJoystick->guid);
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} else {
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pNewJoystick->guid.data[0] = 'x';
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pNewJoystick->guid.data[1] = 'i';
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pNewJoystick->guid.data[2] = 'n';
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pNewJoystick->guid.data[3] = 'p';
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pNewJoystick->guid.data[4] = 'u';
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pNewJoystick->guid.data[5] = 't';
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pNewJoystick->guid.data[6] = SubType;
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}
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pNewJoystick->SubType = SubType;
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pNewJoystick->XInputUserId = userid;
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SDL_SYS_AddJoystickDevice(pNewJoystick);
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}
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void
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SDL_XINPUT_JoystickDetect(JoyStick_DeviceData **pContext)
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{
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int iuserid;
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if (!s_bXInputEnabled) {
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return;
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}
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/* iterate in reverse, so these are in the final list in ascending numeric order. */
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for (iuserid = XUSER_MAX_COUNT - 1; iuserid >= 0; iuserid--) {
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const Uint8 userid = (Uint8)iuserid;
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XINPUT_CAPABILITIES capabilities;
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if (XINPUTGETCAPABILITIES(userid, XINPUT_FLAG_GAMEPAD, &capabilities) == ERROR_SUCCESS) {
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AddXInputDevice(userid, capabilities.SubType, pContext);
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}
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}
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}
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int
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SDL_XINPUT_JoystickOpen(SDL_Joystick * joystick, JoyStick_DeviceData *joystickdevice)
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{
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const Uint8 userId = joystickdevice->XInputUserId;
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XINPUT_CAPABILITIES capabilities;
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XINPUT_VIBRATION state;
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SDL_assert(s_bXInputEnabled);
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SDL_assert(XINPUTGETCAPABILITIES);
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SDL_assert(XINPUTSETSTATE);
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SDL_assert(userId < XUSER_MAX_COUNT);
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joystick->hwdata->bXInputDevice = SDL_TRUE;
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if (XINPUTGETCAPABILITIES(userId, XINPUT_FLAG_GAMEPAD, &capabilities) != ERROR_SUCCESS) {
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SDL_free(joystick->hwdata);
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joystick->hwdata = NULL;
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return SDL_SetError("Failed to obtain XInput device capabilities. Device disconnected?");
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}
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SDL_zero(state);
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joystick->hwdata->bXInputHaptic = (XINPUTSETSTATE(userId, &state) == ERROR_SUCCESS);
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joystick->hwdata->userid = userId;
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/* The XInput API has a hard coded button/axis mapping, so we just match it */
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if (SDL_XInputUseOldJoystickMapping()) {
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joystick->naxes = 6;
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joystick->nbuttons = 15;
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} else {
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joystick->naxes = 6;
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joystick->nbuttons = 11;
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joystick->nhats = 1;
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}
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return 0;
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}
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static void
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UpdateXInputJoystickState_OLD(SDL_Joystick * joystick, XINPUT_STATE_EX *pXInputState)
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{
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static WORD s_XInputButtons[] = {
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XINPUT_GAMEPAD_DPAD_UP, XINPUT_GAMEPAD_DPAD_DOWN, XINPUT_GAMEPAD_DPAD_LEFT, XINPUT_GAMEPAD_DPAD_RIGHT,
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XINPUT_GAMEPAD_START, XINPUT_GAMEPAD_BACK, XINPUT_GAMEPAD_LEFT_THUMB, XINPUT_GAMEPAD_RIGHT_THUMB,
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XINPUT_GAMEPAD_LEFT_SHOULDER, XINPUT_GAMEPAD_RIGHT_SHOULDER,
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XINPUT_GAMEPAD_A, XINPUT_GAMEPAD_B, XINPUT_GAMEPAD_X, XINPUT_GAMEPAD_Y,
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XINPUT_GAMEPAD_GUIDE
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};
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WORD wButtons = pXInputState->Gamepad.wButtons;
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Uint8 button;
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SDL_PrivateJoystickAxis(joystick, 0, (Sint16)pXInputState->Gamepad.sThumbLX);
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SDL_PrivateJoystickAxis(joystick, 1, (Sint16)(-SDL_max(-32767, pXInputState->Gamepad.sThumbLY)));
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SDL_PrivateJoystickAxis(joystick, 2, (Sint16)pXInputState->Gamepad.sThumbRX);
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SDL_PrivateJoystickAxis(joystick, 3, (Sint16)(-SDL_max(-32767, pXInputState->Gamepad.sThumbRY)));
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SDL_PrivateJoystickAxis(joystick, 4, (Sint16)(((int)pXInputState->Gamepad.bLeftTrigger * 65535 / 255) - 32768));
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SDL_PrivateJoystickAxis(joystick, 5, (Sint16)(((int)pXInputState->Gamepad.bRightTrigger * 65535 / 255) - 32768));
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for (button = 0; button < SDL_arraysize(s_XInputButtons); ++button) {
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SDL_PrivateJoystickButton(joystick, button, (wButtons & s_XInputButtons[button]) ? SDL_PRESSED : SDL_RELEASED);
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}
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}
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static void
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UpdateXInputJoystickState(SDL_Joystick * joystick, XINPUT_STATE_EX *pXInputState)
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{
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static WORD s_XInputButtons[] = {
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XINPUT_GAMEPAD_A, XINPUT_GAMEPAD_B, XINPUT_GAMEPAD_X, XINPUT_GAMEPAD_Y,
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XINPUT_GAMEPAD_LEFT_SHOULDER, XINPUT_GAMEPAD_RIGHT_SHOULDER, XINPUT_GAMEPAD_BACK, XINPUT_GAMEPAD_START,
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XINPUT_GAMEPAD_LEFT_THUMB, XINPUT_GAMEPAD_RIGHT_THUMB,
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XINPUT_GAMEPAD_GUIDE
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};
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WORD wButtons = pXInputState->Gamepad.wButtons;
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Uint8 button;
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Uint8 hat = SDL_HAT_CENTERED;
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SDL_PrivateJoystickAxis(joystick, 0, (Sint16)pXInputState->Gamepad.sThumbLX);
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SDL_PrivateJoystickAxis(joystick, 1, (Sint16)(-SDL_max(-32767, pXInputState->Gamepad.sThumbLY)));
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SDL_PrivateJoystickAxis(joystick, 2, (Sint16)(((int)pXInputState->Gamepad.bLeftTrigger * 65535 / 255) - 32768));
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SDL_PrivateJoystickAxis(joystick, 3, (Sint16)pXInputState->Gamepad.sThumbRX);
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SDL_PrivateJoystickAxis(joystick, 4, (Sint16)(-SDL_max(-32767, pXInputState->Gamepad.sThumbRY)));
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SDL_PrivateJoystickAxis(joystick, 5, (Sint16)(((int)pXInputState->Gamepad.bRightTrigger * 65535 / 255) - 32768));
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for (button = 0; button < SDL_arraysize(s_XInputButtons); ++button) {
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SDL_PrivateJoystickButton(joystick, button, (wButtons & s_XInputButtons[button]) ? SDL_PRESSED : SDL_RELEASED);
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}
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if (wButtons & XINPUT_GAMEPAD_DPAD_UP) {
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hat |= SDL_HAT_UP;
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}
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if (wButtons & XINPUT_GAMEPAD_DPAD_DOWN) {
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hat |= SDL_HAT_DOWN;
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}
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if (wButtons & XINPUT_GAMEPAD_DPAD_LEFT) {
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hat |= SDL_HAT_LEFT;
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}
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if (wButtons & XINPUT_GAMEPAD_DPAD_RIGHT) {
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hat |= SDL_HAT_RIGHT;
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}
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SDL_PrivateJoystickHat(joystick, 0, hat);
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}
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void
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SDL_XINPUT_JoystickUpdate(SDL_Joystick * joystick)
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{
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HRESULT result;
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XINPUT_STATE_EX XInputState;
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if (!XINPUTGETSTATE)
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return;
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result = XINPUTGETSTATE(joystick->hwdata->userid, &XInputState);
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if (result == ERROR_DEVICE_NOT_CONNECTED) {
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joystick->hwdata->send_remove_event = SDL_TRUE;
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joystick->hwdata->removed = SDL_TRUE;
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return;
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}
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/* only fire events if the data changed from last time */
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if (XInputState.dwPacketNumber && XInputState.dwPacketNumber != joystick->hwdata->dwPacketNumber) {
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if (SDL_XInputUseOldJoystickMapping()) {
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UpdateXInputJoystickState_OLD(joystick, &XInputState);
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} else {
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UpdateXInputJoystickState(joystick, &XInputState);
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}
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joystick->hwdata->dwPacketNumber = XInputState.dwPacketNumber;
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}
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}
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void
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SDL_XINPUT_JoystickClose(SDL_Joystick * joystick)
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{
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}
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void
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SDL_XINPUT_JoystickQuit(void)
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{
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if (s_bXInputEnabled) {
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WIN_UnloadXInputDLL();
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}
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}
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SDL_bool
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SDL_SYS_IsXInputGamepad_DeviceIndex(int device_index)
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{
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JoyStick_DeviceData *device = SYS_Joystick;
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int index;
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for (index = device_index; index > 0; index--)
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device = device->pNext;
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return (device->SubType == XINPUT_DEVSUBTYPE_GAMEPAD);
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}
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#else /* !SDL_JOYSTICK_XINPUT */
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SDL_bool SDL_XINPUT_Enabled(void)
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{
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return SDL_FALSE;
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}
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int
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SDL_XINPUT_JoystickInit(void)
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{
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return 0;
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}
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void
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SDL_XINPUT_JoystickDetect(JoyStick_DeviceData **pContext)
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{
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}
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int
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SDL_XINPUT_JoystickOpen(SDL_Joystick * joystick, JoyStick_DeviceData *joystickdevice)
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{
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return SDL_Unsupported();
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}
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void
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SDL_XINPUT_JoystickUpdate(SDL_Joystick * joystick)
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{
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}
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void
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SDL_XINPUT_JoystickClose(SDL_Joystick * joystick)
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{
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}
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void
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SDL_XINPUT_JoystickQuit(void)
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{
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}
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#endif /* SDL_JOYSTICK_XINPUT */
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/* vi: set ts=4 sw=4 expandtab: */
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