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81256207bd
meyraud705 Dualshock4 on bluetooth need 78 bytes for the rumble data while SDL_HIDAPI_RumbleRequest can only hold 64 bytes. 'volatile' is not meant for thread synchronization. The list of rumble request could grow infinitely if user call SDL_JoystickRumble too much. The documentation says "Each call to this function cancels any previous rumble effect", so overwriting pending request seem like a good idea.
40 lines
1.6 KiB
C
40 lines
1.6 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2020 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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#ifdef SDL_JOYSTICK_HIDAPI
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/* Handle rumble on a separate thread so it doesn't block the application */
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/* Advanced API */
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int SDL_HIDAPI_LockRumble(void);
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SDL_bool SDL_HIDAPI_GetPendingRumbleLocked(SDL_HIDAPI_Device *device, Uint8 **data, int **size, int *maximum_size);
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int SDL_HIDAPI_SendRumbleAndUnlock(SDL_HIDAPI_Device *device, const Uint8 *data, int size);
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void SDL_HIDAPI_UnlockRumble(void);
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/* Simple API, will replace any pending rumble with the new data */
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int SDL_HIDAPI_SendRumble(SDL_HIDAPI_Device *device, const Uint8 *data, int size);
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void SDL_HIDAPI_QuitRumble(void);
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#endif /* SDL_JOYSTICK_HIDAPI */
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/* vi: set ts=4 sw=4 expandtab: */
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