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Linux: Fix joystick array bugs

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Related to #1005.
This commit is contained in:
Camilla Löwy 2017-06-15 16:03:04 +02:00
parent d1a2ec4d20
commit 206f9ca4bc
2 changed files with 14 additions and 13 deletions
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17
src/linux_joystick.c
View File

@ -38,7 +38,6 @@
#include <string.h>
#include <unistd.h>
#define NUM_BITS(size) ((size) / 8)
#define TEST_BIT(bit, arr) (arr[(bit) / 8] & (1 << ((bit) % 8)))
static void handleKeyEvent(_GLFWjoystick* js, int code, int value)
@ -100,8 +99,11 @@ static void pollJoystick(_GLFWjoystick* js)
{
int i;
for (i = ABS_X; i < ABS_MAX; i++)
for (i = 0; i < ABS_CNT; i++)
{
if (js->linjs.absMap[i] < 0)
continue;
struct input_absinfo *info = &js->linjs.absInfo[i];
if (ioctl(js->linjs.fd, EVIOCGABS(i), info) < 0)
@ -117,9 +119,9 @@ static GLFWbool openJoystickDevice(const char* path)
{
int jid, fd, i;
char name[256] = "";
char evBits[NUM_BITS(EV_MAX)] = {0};
char keyBits[NUM_BITS(KEY_MAX)] = {0};
char absBits[NUM_BITS(ABS_MAX)] = {0};
char evBits[(EV_CNT + 7) / 8] = {0};
char keyBits[(KEY_CNT + 7) / 8] = {0};
char absBits[(ABS_CNT + 7) / 8] = {0};
int axisCount = 0;
int buttonCount = 0;
int hatCount = 0;
@ -151,7 +153,7 @@ static GLFWbool openJoystickDevice(const char* path)
if (ioctl(fd, EVIOCGNAME(sizeof(name)), name) < 0)
strncpy(name, "Unknown", sizeof(name));
for (i = BTN_MISC; i < KEY_MAX; i++)
for (i = BTN_MISC; i < KEY_CNT; i++)
{
if (!TEST_BIT(i, keyBits))
continue;
@ -159,8 +161,9 @@ static GLFWbool openJoystickDevice(const char* path)
linjs.keyMap[i] = buttonCount++;
}
for (i = ABS_X; i < ABS_MAX; i++)
for (i = 0; i < ABS_CNT; i++)
{
linjs.absMap[i] = -1;
if (!TEST_BIT(i, absBits))
continue;

10
src/linux_joystick.h
View File

@ -31,18 +31,16 @@
#define _GLFW_PLATFORM_JOYSTICK_STATE _GLFWjoystickLinux linjs
#define _GLFW_PLATFORM_LIBRARY_JOYSTICK_STATE _GLFWlibraryLinux linjs
#define HATS_MAX ((ABS_HAT3Y - ABS_HAT0X) / 2)
// Linux-specific joystick data
//
typedef struct _GLFWjoystickLinux
{
int fd;
char path[PATH_MAX];
int keyMap[KEY_MAX];
int absMap[ABS_MAX];
struct input_absinfo absInfo[ABS_MAX];
int hats[HATS_MAX][2];
int keyMap[KEY_CNT];
int absMap[ABS_CNT];
struct input_absinfo absInfo[ABS_CNT];
int hats[4][2];
} _GLFWjoystickLinux;
// Linux-specific joystick API data