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pcsx2/plugins/onepad/SDL/joystick.cpp

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/* OnePAD - author: arcum42(@gmail.com)
* Copyright (C) 2009
*
* Based on ZeroPAD, author zerofrog@gmail.com
* Copyright (C) 2006-2007
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "joystick.h"
#include <signal.h> // sigaction
//////////////////////////
// Joystick definitions //
//////////////////////////
static u32 s_bSDLInit = false;
void JoystickInfo::UpdateReleaseState()
{
vector<GamePad *>::iterator itjoy = s_vgamePad.begin();
SDL_JoystickUpdate();
// Save everything in the vector s_vjoysticks.
while (itjoy != s_vgamePad.end()) {
(*itjoy)->SaveState();
++itjoy;
}
}
// opens handles to all possible joysticks
void JoystickInfo::EnumerateJoysticks(vector<GamePad *> &vjoysticks)
{
if (!s_bSDLInit) {
#if SDL_MAJOR_VERSION >= 2
// Tell SDL to catch event even if the windows isn't focussed
SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1");
if (SDL_Init(SDL_INIT_JOYSTICK | SDL_INIT_HAPTIC | SDL_INIT_EVENTS) < 0)
return;
// WTF! Give me back the control of my system
struct sigaction action = {0};
action.sa_handler = SIG_DFL;
sigaction(SIGINT, &action, NULL);
sigaction(SIGTERM, &action, NULL);
#else
if (SDL_Init(SDL_INIT_JOYSTICK) < 0)
return;
#endif
SDL_JoystickEventState(SDL_QUERY);
s_bSDLInit = true;
}
vector<GamePad *>::iterator it = vjoysticks.begin();
// Delete everything in the vector vjoysticks.
while (it != vjoysticks.end()) {
delete *it;
++it;
}
vjoysticks.resize(SDL_NumJoysticks());
for (int i = 0; i < (int)vjoysticks.size(); ++i) {
vjoysticks[i] = new JoystickInfo();
vjoysticks[i]->Init(i);
}
}
void JoystickInfo::GenerateDefaultEffect()
{
#if SDL_MAJOR_VERSION >= 2
for (int i = 0; i < NB_EFFECT; i++) {
SDL_HapticEffect effect;
memset(&effect, 0, sizeof(SDL_HapticEffect)); // 0 is safe default
SDL_HapticDirection direction;
direction.type = SDL_HAPTIC_POLAR; // We'll be using polar direction encoding.
direction.dir[0] = 18000;
effect.periodic.direction = direction;
effect.periodic.period = 10;
effect.periodic.magnitude = (Sint16)(conf->get_ff_intensity()); // Effect at maximum instensity
effect.periodic.offset = 0;
effect.periodic.phase = 18000;
effect.periodic.length = 125; // 125ms feels quite near to original
effect.periodic.delay = 0;
effect.periodic.attack_length = 0;
effects[i] = effect;
}
#endif
}
void JoystickInfo::Rumble(int type, int pad)
{
if (type > 1)
return;
if (!(conf->pad_options[pad].forcefeedback))
return;
#if SDL_MAJOR_VERSION >= 2
if (haptic == NULL)
return;
if (first) { // If done multiple times, device memory will be filled
first = 0;
GenerateDefaultEffect();
/** Sine and triangle are quite probably the best, don't change that lightly and if you do
* keep effects ordered by type
**/
/** Effect for small motor **/
/** Sine seems to be the only effect making little motor from DS3/4 react
* Intensity has pretty much no effect either(which is coherent with what is explain in hid_sony driver
**/
effects[0].type = SDL_HAPTIC_SINE;
effects_id[0] = SDL_HapticNewEffect(haptic, &effects[0]);
if (effects_id[0] < 0) {
fprintf(stderr, "ERROR: Effect is not uploaded! %s, id is %d\n", SDL_GetError(), effects_id[0]);
}
/** Effect for big motor **/
effects[1].type = SDL_HAPTIC_TRIANGLE;
effects_id[1] = SDL_HapticNewEffect(haptic, &effects[1]);
if (effects_id[1] < 0) {
fprintf(stderr, "ERROR: Effect is not uploaded! %s, id is %d\n", SDL_GetError(), effects_id[1]);
}
}
int id;
id = effects_id[type];
if (SDL_HapticRunEffect(haptic, id, 1) != 0) {
fprintf(stderr, "ERROR: Effect is not working! %s, id is %d\n", SDL_GetError(), id);
}
#endif
}
void JoystickInfo::Destroy()
{
if (joy != NULL) {
#if SDL_MAJOR_VERSION >= 2
// Haptic must be closed before the joystick
if (haptic != NULL) {
SDL_HapticClose(haptic);
haptic = NULL;
}
#endif
#if SDL_MAJOR_VERSION >= 2
#if SDL_MINOR_VERSION >= 4 // Version before 2.0.4 are bugged, JoystickClose crashes randomly
if (joy)
SDL_JoystickClose(joy);
#endif
#else
if (SDL_JoystickOpened(_id))
SDL_JoystickClose(joy);
#endif
joy = NULL;
}
}
bool JoystickInfo::Init(int id)
{
Destroy();
_id = id;
joy = SDL_JoystickOpen(id);
if (joy == NULL) {
PAD_LOG("failed to open joystick %d\n", id);
return false;
}
numaxes = SDL_JoystickNumAxes(joy);
numbuttons = SDL_JoystickNumButtons(joy);
numhats = SDL_JoystickNumHats(joy);
#if SDL_MAJOR_VERSION >= 2
devname = SDL_JoystickName(joy);
#else
devname = SDL_JoystickName(id);
#endif
vaxisstate.resize(numaxes);
vbuttonstate.resize(numbuttons);
vhatstate.resize(numhats);
// Sixaxis, dualshock3 hack
// Most buttons are actually axes due to analog pressure support. Only the first 4 buttons
// are digital (select, start, l3, r3). To avoid conflict just forget the others.
// Keep the 4 hat buttons too (usb driver). (left pressure does not work with recent kernel). Moreover the pressure
// work sometime on half axis neg others time in fulll axis. So better keep them as button for the moment
u32 found_hack = devname.find(string("PLAYSTATION(R)3"));
// FIXME: people need to restart the plugin to take the option into account.
bool hack_enabled = (conf->pad_options[0].sixaxis_pressure) || (conf->pad_options[1].sixaxis_pressure);
if (found_hack != string::npos && numaxes > 4 && hack_enabled) {
numbuttons = 4; // (select, start, l3, r3)
// Enable this hack in bluetooth too. It avoid to restart the onepad gui
numbuttons += 4; // the 4 hat buttons
}
#if SDL_MAJOR_VERSION >= 2
if (haptic == NULL) {
if (!SDL_JoystickIsHaptic(joy)) {
PAD_LOG("Haptic devices not supported!\n");
} else {
haptic = SDL_HapticOpenFromJoystick(joy);
first = true;
}
}
#endif
//PAD_LOG("There are %d buttons, %d axises, and %d hats.\n", numbuttons, numaxes, numhats);
return true;
}
void JoystickInfo::SaveState()
{
for (int i = 0; i < numbuttons; ++i)
SetButtonState(i, SDL_JoystickGetButton(joy, i));
for (int i = 0; i < numaxes; ++i)
SetAxisState(i, SDL_JoystickGetAxis(joy, i));
for (int i = 0; i < numhats; ++i)
SetHatState(i, SDL_JoystickGetHat(joy, i));
}
bool JoystickInfo::TestForce(float strength = 0.60)
{
#if SDL_MAJOR_VERSION >= 2
// This code just use standard rumble to check that SDL handles the pad correctly! --3kinox
if (haptic == NULL)
return false; // Otherwise, core dump!
SDL_HapticRumbleInit(haptic);
// Make the haptic pad rumble 60% strength for half a second, shoudld be enough for user to see if it works or not
if (SDL_HapticRumblePlay(haptic, strength, 400) != 0) {
fprintf(stderr, "ERROR: Rumble is not working! %s\n", SDL_GetError());
return false;
}
#endif
return true;
}
bool JoystickInfo::PollButtons(u32 &pkey)
{
// MAKE sure to look for changes in the state!!
for (int i = 0; i < GetNumButtons(); ++i) {
int but = SDL_JoystickGetButton(GetJoy(), i);
if (but != GetButtonState(i)) {
// Pressure sensitive button are detected as both button (digital) and axes (analog). So better
// drop the button to emulate the pressure sensiblity of the ds2 :)
// Trick: detect the release of the button. It avoid all races condition between axes and buttons :)
// If the button support pressure it will be detected as an axis when it is pressed.
if (but) {
SetButtonState(i, but);
return false;
}
pkey = button_to_key(i);
return true;
}
}
return false;
}
bool JoystickInfo::PollAxes(u32 &pkey)
{
u32 found_hack = devname.find(string("PLAYSTATION(R)3"));
for (int i = 0; i < GetNumAxes(); ++i) {
// Sixaxis, dualshock3 hack
if (found_hack != string::npos) {
// The analog mode of the hat button is quite erratic. Values can be in half- axis
// or full axis... So better keep them as button for the moment -- gregory
if (i >= 8 && i <= 11 && (conf->pad_options[pad].sixaxis_usb))
continue;
// Disable accelerometer
if ((i >= 4 && i <= 6))
continue;
}
s32 value = SDL_JoystickGetAxis(GetJoy(), i);
s32 old_value = GetAxisState(i);
if (abs(value - old_value) < 0x1000)
continue;
if (value != old_value) {
PAD_LOG("Change in joystick %d: %d.\n", i, value);
// There are several kinds of axes
// Half+: 0 (release) -> 32768
// Half-: 0 (release) -> -32768
// Full (like dualshock 3): -32768 (release) ->32768
const s32 full_axis_ceil = -0x6FFF;
const s32 half_axis_ceil = 0x1FFF;
// Normally, old_value contains the release state so it can be used to detect the types of axis.
bool is_full_axis = (old_value < full_axis_ceil);
if ((!is_full_axis && abs(value) <= half_axis_ceil) || (is_full_axis && value <= full_axis_ceil)) // we don't want this
{
continue;
}
if ((!is_full_axis && abs(value) > half_axis_ceil) || (is_full_axis && value > full_axis_ceil)) {
bool sign = (value < 0);
pkey = axis_to_key(is_full_axis, sign, i);
return true;
}
}
}
return false;
}
bool JoystickInfo::PollHats(u32 &pkey)
{
for (int i = 0; i < GetNumHats(); ++i) {
int value = SDL_JoystickGetHat(GetJoy(), i);
if ((value != GetHatState(i)) && (value != SDL_HAT_CENTERED)) {
switch (value) {
case SDL_HAT_UP:
case SDL_HAT_RIGHT:
case SDL_HAT_DOWN:
case SDL_HAT_LEFT:
pkey = hat_to_key(value, i);
PAD_LOG("Hat Pressed!");
return true;
default:
break;
}
}
}
return false;
}
int JoystickInfo::GetHat(int key_to_axis)
{
return SDL_JoystickGetHat(GetJoy(), key_to_axis);
}
int JoystickInfo::GetButton(int key_to_button)
{
return SDL_JoystickGetButton(GetJoy(), key_to_button);
}
int JoystickInfo::GetAxisFromKey(int pad, int index)
{
return SDL_JoystickGetAxis(GetJoy(), key_to_axis(pad, index));
}
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