updae source to 2.0.9 source

Edward Rudd

2019-04-09 9cd2e9ec8fc0127393dfce9c0359d500c8c238be

 source/src/joystick/emscripten/SDL_sysjoystick.c

@@ -1,6 +1,6 @@
/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
  Copyright (C) 1997-2018 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
@@ -28,7 +28,6 @@
#include "SDL_events.h"

#include "SDL_joystick.h"
#include "SDL_hints.h"
#include "SDL_assert.h"
#include "SDL_timer.h"
#include "SDL_log.h"
@@ -42,7 +41,7 @@
static int numjoysticks = 0;
static int instance_counter = 0;

EM_BOOL
static EM_BOOL
Emscripten_JoyStickConnected(int eventType, const EmscriptenGamepadEvent *gamepadEvent, void *userData)
{
    int i;
@@ -111,7 +110,7 @@
    return 1;
}

EM_BOOL
static EM_BOOL
Emscripten_JoyStickDisconnected(int eventType, const EmscriptenGamepadEvent *gamepadEvent, void *userData)
{
    SDL_joylist_item *item = SDL_joylist;
@@ -146,7 +145,7 @@
    /* Need to decrement the joystick count before we post the event */
    --numjoysticks;

   SDL_PrivateJoystickRemoved(item->device_instance);
    SDL_PrivateJoystickRemoved(item->device_instance);

#ifdef DEBUG_JOYSTICK
    SDL_Log("Removed joystick with id %d", item->device_instance);
@@ -157,11 +156,34 @@
    return 1;
}

/* Function to perform any system-specific joystick related cleanup */
static void
EMSCRIPTEN_JoystickQuit(void)
{
    SDL_joylist_item *item = NULL;
    SDL_joylist_item *next = NULL;

    for (item = SDL_joylist; item; item = next) {
        next = item->next;
        SDL_free(item->mapping);
        SDL_free(item->name);
        SDL_free(item);
    }

    SDL_joylist = SDL_joylist_tail = NULL;

    numjoysticks = 0;
    instance_counter = 0;

    emscripten_set_gamepadconnected_callback(NULL, 0, NULL);
    emscripten_set_gamepaddisconnected_callback(NULL, 0, NULL);
}

/* Function to scan the system for joysticks.
 * It should return 0, or -1 on an unrecoverable fatal error.
 */
int
SDL_SYS_JoystickInit(void)
static int
EMSCRIPTEN_JoystickInit(void)
{
    int retval, i, numjs;
    EmscriptenGamepadEvent gamepadState;
@@ -191,7 +213,7 @@
                                                      Emscripten_JoyStickConnected);

    if(retval != EMSCRIPTEN_RESULT_SUCCESS) {
        SDL_SYS_JoystickQuit();
        EMSCRIPTEN_JoystickQuit();
        return SDL_SetError("Could not set gamepad connect callback");
    }

@@ -199,7 +221,7 @@
                                                         0,
                                                         Emscripten_JoyStickDisconnected);
    if(retval != EMSCRIPTEN_RESULT_SUCCESS) {
        SDL_SYS_JoystickQuit();
        EMSCRIPTEN_JoystickQuit();
        return SDL_SetError("Could not set gamepad disconnect callback");
    }

@@ -240,24 +262,31 @@
    return item;
}

int SDL_SYS_NumJoysticks()
static int
EMSCRIPTEN_JoystickGetCount(void)
{
    return numjoysticks;
}

void SDL_SYS_JoystickDetect()
static void
EMSCRIPTEN_JoystickDetect(void)
{
}

/* Function to get the device-dependent name of a joystick */
const char *
SDL_SYS_JoystickNameForDeviceIndex(int device_index)
static const char *
EMSCRIPTEN_JoystickGetDeviceName(int device_index)
{
    return JoystickByDeviceIndex(device_index)->name;
}

/* Function to perform the mapping from device index to the instance id for this index */
SDL_JoystickID SDL_SYS_GetInstanceIdOfDeviceIndex(int device_index)
static int
EMSCRIPTEN_JoystickGetDevicePlayerIndex(int device_index)
{
    return -1;
}

static SDL_JoystickID
EMSCRIPTEN_JoystickGetDeviceInstanceID(int device_index)
{
    return JoystickByDeviceIndex(device_index)->device_instance;
}
@@ -267,8 +296,8 @@
   This should fill the nbuttons and naxes fields of the joystick structure.
   It returns 0, or -1 if there is an error.
 */
int
SDL_SYS_JoystickOpen(SDL_Joystick * joystick, int device_index)
static int
EMSCRIPTEN_JoystickOpen(SDL_Joystick * joystick, int device_index)
{
    SDL_joylist_item *item = JoystickByDeviceIndex(device_index);

@@ -294,19 +323,13 @@
    return (0);
}

/* Function to determine if this joystick is attached to the system right now */
SDL_bool SDL_SYS_JoystickAttached(SDL_Joystick *joystick)
{
    return joystick->hwdata != NULL;
}

/* 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.
 */
void
SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
static void
EMSCRIPTEN_JoystickUpdate(SDL_Joystick * joystick)
{
    EmscriptenGamepadEvent gamepadState;
    SDL_joylist_item *item = (SDL_joylist_item *) joystick->hwdata;
@@ -329,7 +352,7 @@

                for(i = 0; i < item->naxes; i++) {
                    if(item->axis[i] != gamepadState.axis[i]) {
                        // do we need to do conversion?
                        /* do we need to do conversion? */
                        SDL_PrivateJoystickAxis(item->joystick, i,
                                                  (Sint16) (32767.*gamepadState.axis[i]));
                    }
@@ -345,8 +368,8 @@
}

/* Function to close a joystick after use */
void
SDL_SYS_JoystickClose(SDL_Joystick * joystick)
static void
EMSCRIPTEN_JoystickClose(SDL_Joystick * joystick)
{
    SDL_joylist_item *item = (SDL_joylist_item *) joystick->hwdata;
    if (item) {
@@ -354,49 +377,39 @@
    }
}

/* Function to perform any system-specific joystick related cleanup */
void
SDL_SYS_JoystickQuit(void)
{
    SDL_joylist_item *item = NULL;
    SDL_joylist_item *next = NULL;

    for (item = SDL_joylist; item; item = next) {
        next = item->next;
        SDL_free(item->mapping);
        SDL_free(item->name);
        SDL_free(item);
    }

    SDL_joylist = SDL_joylist_tail = NULL;

    numjoysticks = 0;
    instance_counter = 0;

    emscripten_set_gamepadconnected_callback(NULL, 0, NULL);
    emscripten_set_gamepaddisconnected_callback(NULL, 0, NULL);
}

SDL_JoystickGUID
SDL_SYS_JoystickGetDeviceGUID(int device_index)
static SDL_JoystickGUID
EMSCRIPTEN_JoystickGetDeviceGUID(int device_index)
{
    SDL_JoystickGUID guid;
    /* the GUID is just the first 16 chars of the name for now */
    const char *name = SDL_SYS_JoystickNameForDeviceIndex(device_index);
    const char *name = EMSCRIPTEN_JoystickGetDeviceName(device_index);
    SDL_zero(guid);
    SDL_memcpy(&guid, name, SDL_min(sizeof(guid), SDL_strlen(name)));
    return guid;
}

SDL_JoystickGUID
SDL_SYS_JoystickGetGUID(SDL_Joystick * joystick)
static int
EMSCRIPTEN_JoystickRumble(SDL_Joystick * joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms)
{
    SDL_JoystickGUID guid;
    /* the GUID is just the first 16 chars of the name for now */
    const char *name = joystick->name;
    SDL_zero(guid);
    SDL_memcpy(&guid, name, SDL_min(sizeof(guid), SDL_strlen(name)));
    return guid;
    return SDL_Unsupported();
}

SDL_JoystickDriver SDL_EMSCRIPTEN_JoystickDriver =
{
    EMSCRIPTEN_JoystickInit,
    EMSCRIPTEN_JoystickGetCount,
    EMSCRIPTEN_JoystickDetect,
    EMSCRIPTEN_JoystickGetDeviceName,
    EMSCRIPTEN_JoystickGetDevicePlayerIndex,
    EMSCRIPTEN_JoystickGetDeviceGUID,
    EMSCRIPTEN_JoystickGetDeviceInstanceID,
    EMSCRIPTEN_JoystickOpen,
    EMSCRIPTEN_JoystickRumble,
    EMSCRIPTEN_JoystickUpdate,
    EMSCRIPTEN_JoystickClose,
    EMSCRIPTEN_JoystickQuit,
};

#endif /* SDL_JOYSTICK_EMSCRIPTEN */

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