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0e45984fa0
The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
126 lines
3.6 KiB
C
126 lines
3.6 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2015 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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#if defined(SDL_JOYSTICK_DUMMY) || defined(SDL_JOYSTICK_DISABLED)
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/* This is the dummy implementation of the SDL joystick API */
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#include "SDL_joystick.h"
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#include "../SDL_sysjoystick.h"
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#include "../SDL_joystick_c.h"
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/* Function to scan the system for joysticks.
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* It should return 0, or -1 on an unrecoverable fatal error.
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*/
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int
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SDL_SYS_JoystickInit(void)
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{
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return 0;
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}
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int SDL_SYS_NumJoysticks()
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{
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return 0;
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}
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void SDL_SYS_JoystickDetect()
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{
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}
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/* Function to get the device-dependent name of a joystick */
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const char *
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SDL_SYS_JoystickNameForDeviceIndex(int device_index)
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{
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SDL_SetError("Logic error: No joysticks available");
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return (NULL);
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}
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/* Function to perform the mapping from device index to the instance id for this index */
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SDL_JoystickID SDL_SYS_GetInstanceIdOfDeviceIndex(int device_index)
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{
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return device_index;
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}
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/* Function to open a joystick for use.
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The joystick to open is specified by the device index.
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This should fill the nbuttons and naxes fields of the joystick structure.
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It returns 0, or -1 if there is an error.
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*/
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int
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SDL_SYS_JoystickOpen(SDL_Joystick * joystick, int device_index)
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{
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return SDL_SetError("Logic error: No joysticks available");
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}
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/* Function to determine if this joystick is attached to the system right now */
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SDL_bool SDL_SYS_JoystickAttached(SDL_Joystick *joystick)
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{
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return SDL_TRUE;
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}
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/* Function to update the state of a joystick - called as a device poll.
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* This function shouldn't update the joystick structure directly,
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* but instead should call SDL_PrivateJoystick*() to deliver events
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* and update joystick device state.
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*/
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void
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SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
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{
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}
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/* Function to close a joystick after use */
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void
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SDL_SYS_JoystickClose(SDL_Joystick * joystick)
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{
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}
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/* Function to perform any system-specific joystick related cleanup */
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void
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SDL_SYS_JoystickQuit(void)
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{
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}
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SDL_JoystickGUID SDL_SYS_JoystickGetDeviceGUID( int device_index )
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{
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SDL_JoystickGUID guid;
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/* the GUID is just the first 16 chars of the name for now */
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const char *name = SDL_SYS_JoystickNameForDeviceIndex( device_index );
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SDL_zero( guid );
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SDL_memcpy( &guid, name, SDL_min( sizeof(guid), SDL_strlen( name ) ) );
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return guid;
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}
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SDL_JoystickGUID SDL_SYS_JoystickGetGUID(SDL_Joystick * joystick)
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{
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SDL_JoystickGUID guid;
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/* the GUID is just the first 16 chars of the name for now */
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const char *name = joystick->name;
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SDL_zero( guid );
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SDL_memcpy( &guid, name, SDL_min( sizeof(guid), SDL_strlen( name ) ) );
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return guid;
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}
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#endif /* SDL_JOYSTICK_DUMMY || SDL_JOYSTICK_DISABLED */
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/* vi: set ts=4 sw=4 expandtab: */
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