SDL_haikujoystick.cc
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifdef SDL_JOYSTICK_HAIKU
/* This is the Haiku implementation of the SDL joystick API */
#include <support/String.h>
#include <device/Joystick.h>
extern "C"
{
#include "SDL_joystick.h"
#include "../SDL_sysjoystick.h"
#include "../SDL_joystick_c.h"
/* The maximum number of joysticks we'll detect */
#define MAX_JOYSTICKS 16
/* A list of available joysticks */
static char *SDL_joyport[MAX_JOYSTICKS];
static char *SDL_joyname[MAX_JOYSTICKS];
/* The private structure used to keep track of a joystick */
struct joystick_hwdata
{
BJoystick *stick;
uint8 *new_hats;
int16 *new_axes;
};
static int numjoysticks = 0;
/* Function to scan the system for joysticks.
* Joystick 0 should be the system default joystick.
* It should return 0, or -1 on an unrecoverable fatal error.
*/
static int HAIKU_JoystickInit(void)
{
BJoystick joystick;
int i;
int32 nports;
char name[B_OS_NAME_LENGTH];
/* Search for attached joysticks */
nports = joystick.CountDevices();
numjoysticks = 0;
SDL_memset(SDL_joyport, 0, (sizeof SDL_joyport));
SDL_memset(SDL_joyname, 0, (sizeof SDL_joyname));
for (i = 0; (numjoysticks < MAX_JOYSTICKS) && (i < nports); ++i)
{
if (joystick.GetDeviceName(i, name) == B_OK) {
if (joystick.Open(name) != B_ERROR) {
BString stick_name;
joystick.GetControllerName(&stick_name);
SDL_joyport[numjoysticks] = SDL_strdup(name);
SDL_joyname[numjoysticks] = SDL_strdup(stick_name.String());
numjoysticks++;
joystick.Close();
}
}
}
return (numjoysticks);
}
static int HAIKU_JoystickGetCount(void)
{
return numjoysticks;
}
static void HAIKU_JoystickDetect(void)
{
}
/* Function to get the device-dependent name of a joystick */
static const char *HAIKU_JoystickGetDeviceName(int device_index)
{
return SDL_joyname[device_index];
}
static int HAIKU_JoystickGetDevicePlayerIndex(int device_index)
{
return -1;
}
/* Function to perform the mapping from device index to the instance id for this index */
static SDL_JoystickID HAIKU_JoystickGetDeviceInstanceID(int device_index)
{
return device_index;
}
static void HAIKU_JoystickClose(SDL_Joystick * joystick);
/* Function to open a joystick for use.
The joystick to open is specified by the device index.
This should fill the nbuttons and naxes fields of the joystick structure.
It returns 0, or -1 if there is an error.
*/
static int HAIKU_JoystickOpen(SDL_Joystick * joystick, int device_index)
{
BJoystick *stick;
/* Create the joystick data structure */
joystick->instance_id = device_index;
joystick->hwdata = (struct joystick_hwdata *)
SDL_malloc(sizeof(*joystick->hwdata));
if (joystick->hwdata == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata));
stick = new BJoystick;
joystick->hwdata->stick = stick;
/* Open the requested joystick for use */
if (stick->Open(SDL_joyport[device_index]) == B_ERROR) {
HAIKU_JoystickClose(joystick);
return SDL_SetError("Unable to open joystick");
}
/* Set the joystick to calibrated mode */
stick->EnableCalibration();
/* Get the number of buttons, hats, and axes on the joystick */
joystick->nbuttons = stick->CountButtons();
joystick->naxes = stick->CountAxes();
joystick->nhats = stick->CountHats();
joystick->hwdata->new_axes = (int16 *)
SDL_malloc(joystick->naxes * sizeof(int16));
joystick->hwdata->new_hats = (uint8 *)
SDL_malloc(joystick->nhats * sizeof(uint8));
if (!joystick->hwdata->new_hats || !joystick->hwdata->new_axes) {
HAIKU_JoystickClose(joystick);
return SDL_OutOfMemory();
}
/* We're done! */
return 0;
}
/* Function to update the state of a joystick - called as a device poll.
* This function shouldn't update the joystick structure directly,
* but instead should call SDL_PrivateJoystick*() to deliver events
* and update joystick device state.
*/
static void HAIKU_JoystickUpdate(SDL_Joystick * joystick)
{
static const Uint8 hat_map[9] = {
SDL_HAT_CENTERED,
SDL_HAT_UP,
SDL_HAT_RIGHTUP,
SDL_HAT_RIGHT,
SDL_HAT_RIGHTDOWN,
SDL_HAT_DOWN,
SDL_HAT_LEFTDOWN,
SDL_HAT_LEFT,
SDL_HAT_LEFTUP
};
BJoystick *stick;
int i;
int16 *axes;
uint8 *hats;
uint32 buttons;
/* Set up data pointers */
stick = joystick->hwdata->stick;
axes = joystick->hwdata->new_axes;
hats = joystick->hwdata->new_hats;
/* Get the new joystick state */
stick->Update();
stick->GetAxisValues(axes);
stick->GetHatValues(hats);
buttons = stick->ButtonValues();
/* Generate axis motion events */
for (i = 0; i < joystick->naxes; ++i) {
SDL_PrivateJoystickAxis(joystick, i, axes[i]);
}
/* Generate hat change events */
for (i = 0; i < joystick->nhats; ++i) {
SDL_PrivateJoystickHat(joystick, i, hat_map[hats[i]]);
}
/* Generate button events */
for (i = 0; i < joystick->nbuttons; ++i) {
SDL_PrivateJoystickButton(joystick, i, (buttons & 0x01));
buttons >>= 1;
}
}
/* Function to close a joystick after use */
static void HAIKU_JoystickClose(SDL_Joystick * joystick)
{
if (joystick->hwdata) {
joystick->hwdata->stick->Close();
delete joystick->hwdata->stick;
SDL_free(joystick->hwdata->new_hats);
SDL_free(joystick->hwdata->new_axes);
SDL_free(joystick->hwdata);
}
}
/* Function to perform any system-specific joystick related cleanup */
static void HAIKU_JoystickQuit(void)
{
int i;
for (i = 0; i < numjoysticks; ++i) {
SDL_free(SDL_joyport[i]);
}
SDL_joyport[0] = NULL;
for (i = 0; i < numjoysticks; ++i) {
SDL_free(SDL_joyname[i]);
}
SDL_joyname[0] = NULL;
}
static SDL_JoystickGUID HAIKU_JoystickGetDeviceGUID( int device_index )
{
SDL_JoystickGUID guid;
/* the GUID is just the first 16 chars of the name for now */
const char *name = HAIKU_JoystickGetDeviceName( device_index );
SDL_zero( guid );
SDL_memcpy( &guid, name, SDL_min( sizeof(guid), SDL_strlen( name ) ) );
return guid;
}
static int HAIKU_JoystickRumble(SDL_Joystick * joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms)
{
return SDL_Unsupported();
}
SDL_JoystickDriver SDL_HAIKU_JoystickDriver =
{
HAIKU_JoystickInit,
HAIKU_JoystickGetCount,
HAIKU_JoystickDetect,
HAIKU_JoystickGetDeviceName,
HAIKU_JoystickGetDevicePlayerIndex,
HAIKU_JoystickGetDeviceGUID,
HAIKU_JoystickGetDeviceInstanceID,
HAIKU_JoystickOpen,
HAIKU_JoystickRumble,
HAIKU_JoystickUpdate,
HAIKU_JoystickClose,
HAIKU_JoystickQuit,
};
} // extern "C"
#endif /* SDL_JOYSTICK_HAIKU */
/* vi: set ts=4 sw=4 expandtab: */
SDL_zero
#define SDL_zero(x)
Definition: SDL_stdinc.h:416
SDL_memset
#define SDL_memset
Definition: SDL_dynapi_overrides.h:386
Uint32
uint32_t Uint32
Definition: SDL_stdinc.h:203
joystick_hwdata::guid
SDL_JoystickGUID guid
Definition: SDL_sysjoystick_c.h:71
numjoysticks
static int numjoysticks
Definition: SDL_sysjoystick.m:83
SDL_HAT_CENTERED
#define SDL_HAT_CENTERED
Definition: SDL_joystick.h:329
NULL
#define NULL
Definition: begin_code.h:167
SDL_HAT_DOWN
#define SDL_HAT_DOWN
Definition: SDL_joystick.h:332
SDL_joystick.h
joystick_hwdata::buttons
int buttons
Definition: SDL_sysjoystick_c.h:60
joystick_hwdata::joystick
SDL_Joystick * joystick
Definition: SDL_sysjoystick_c.h:42
SDL_HAT_LEFTDOWN
#define SDL_HAT_LEFTDOWN
Definition: SDL_joystick.h:337
SDL_PrivateJoystickAxis
int SDL_PrivateJoystickAxis(SDL_Joystick *joystick, Uint8 axis, Sint16 value)
Definition: SDL_joystick.c:833
SDL_JoystickID
Sint32 SDL_JoystickID
Definition: SDL_joystick.h:81
joystick_hwdata::axes
int axes
Definition: SDL_sysjoystick_c.h:59
SDL_memcpy
#define SDL_memcpy
Definition: SDL_dynapi_overrides.h:387
joystick_hwdata::hats
int hats
Definition: SDL_sysjoystick_c.h:61
SDL_free
#define SDL_free
Definition: SDL_dynapi_overrides.h:377
SDL_HAIKU_JoystickDriver
SDL_JoystickDriver SDL_HAIKU_JoystickDriver
name
GLuint const GLchar * name
Definition: SDL_opengl_glext.h:660
SDL_PrivateJoystickButton
int SDL_PrivateJoystickButton(SDL_Joystick *joystick, Uint8 button, Uint8 state)
Definition: SDL_joystick.c:966
Uint16
uint16_t Uint16
Definition: SDL_stdinc.h:191
SDL_HAT_LEFT
#define SDL_HAT_LEFT
Definition: SDL_joystick.h:333
SDL_min
#define SDL_min(x, y)
Definition: SDL_stdinc.h:406
SDL_HAT_LEFTUP
#define SDL_HAT_LEFTUP
Definition: SDL_joystick.h:336
SDL_OutOfMemory
#define SDL_OutOfMemory()
Definition: SDL_error.h:52
SDL_PrivateJoystickHat
int SDL_PrivateJoystickHat(SDL_Joystick *joystick, Uint8 hat, Uint8 value)
Definition: SDL_joystick.c:890
SDL_HAT_RIGHT
#define SDL_HAT_RIGHT
Definition: SDL_joystick.h:331
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
SDL_strdup
#define SDL_strdup
Definition: SDL_dynapi_overrides.h:397
SDL_strlen
#define SDL_strlen
Definition: SDL_dynapi_overrides.h:393
SDL_HAT_UP
#define SDL_HAT_UP
Definition: SDL_joystick.h:330
SDL_Unsupported
#define SDL_Unsupported()
Definition: SDL_error.h:53
SDL_malloc
#define SDL_malloc
Definition: SDL_dynapi_overrides.h:374
SDL_JoystickGUID
Definition: SDL_joystick.h:70
SDL_HAT_RIGHTDOWN
#define SDL_HAT_RIGHTDOWN
Definition: SDL_joystick.h:335
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
SDL_HAT_RIGHTUP
#define SDL_HAT_RIGHTUP
Definition: SDL_joystick.h:334
joystick_hwdata
Definition: SDL_sysjoystick_c.h:46
Uint8
uint8_t Uint8
Definition: SDL_stdinc.h:179