Updated SDL 1.3 to the latest hg-5868:33245988e8a2 , video resize is not supported yet
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pelya
@@ -1,23 +1,22 @@
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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2010 Sam Lantinga
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Simple DirectMedia Layer
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Copyright (C) 1997-2011 Sam Lantinga <slouken@libsdl.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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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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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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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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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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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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#ifndef _SDL_timer_h
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@@ -41,104 +40,60 @@ extern "C" {
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#endif
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/**
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* This is the OS scheduler timeslice, in milliseconds.
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*/
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#define SDL_TIMESLICE 10
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/**
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* This is the maximum resolution of the SDL timer on all platforms.
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*/
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#define TIMER_RESOLUTION 10 /**< Experimentally determined */
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/**
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* Get the number of milliseconds since the SDL library initialization.
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* \brief Get the number of milliseconds since the SDL library initialization.
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*
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* Note that this value wraps if the program runs for more than ~49 days.
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* \note This value wraps if the program runs for more than ~49 days.
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*/
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extern DECLSPEC Uint32 SDLCALL SDL_GetTicks(void);
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/**
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* Wait a specified number of milliseconds before returning.
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* \brief Get the current value of the high resolution counter
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*/
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extern DECLSPEC Uint64 SDLCALL SDL_GetPerformanceCounter(void);
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/**
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* \brief Get the count per second of the high resolution counter
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*/
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extern DECLSPEC Uint64 SDLCALL SDL_GetPerformanceFrequency(void);
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/**
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* \brief Wait a specified number of milliseconds before returning.
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*/
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extern DECLSPEC void SDLCALL SDL_Delay(Uint32 ms);
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/**
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* Function prototype for the timer callback function.
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*/
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typedef Uint32(SDLCALL * SDL_TimerCallback) (Uint32 interval);
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/**
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* Set a callback to run after the specified number of milliseconds has
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* elapsed. The callback function is passed the current timer interval
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* and returns the next timer interval. If the returned value is the
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* same as the one passed in, the periodic alarm continues, otherwise a
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* new alarm is scheduled. If the callback returns 0, the periodic alarm
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* is cancelled.
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*
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* To cancel a currently running timer, call
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* \code SDL_SetTimer(0, NULL); \endcode
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*
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* The timer callback function may run in a different thread than your
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* main code, and so shouldn't call any functions from within itself.
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*
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* The maximum resolution of this timer is 10 ms, which means that if
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* you request a 16 ms timer, your callback will run approximately 20 ms
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* later on an unloaded system. If you wanted to set a flag signaling
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* a frame update at 30 frames per second (every 33 ms), you might set a
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* timer for 30 ms:
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* \code
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* SDL_SetTimer((33/10)*10, flag_update);
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* \endcode
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*
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* If you use this function, you need to pass ::SDL_INIT_TIMER to SDL_Init().
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*
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* Under UNIX, you should not use raise or use SIGALRM and this function
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* in the same program, as it is implemented using setitimer(). You also
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* should not use this function in multi-threaded applications as signals
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* to multi-threaded apps have undefined behavior in some implementations.
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*
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* \return 0 if successful, or -1 if there was an error.
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*/
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extern DECLSPEC int SDLCALL SDL_SetTimer(Uint32 interval,
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SDL_TimerCallback callback);
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/**
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* \name Peter timers
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* New timer API, supports multiple timers
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* Written by Stephane Peter <megastep@lokigames.com>
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*/
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/*@{*/
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/**
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* Function prototype for the new timer callback function.
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*
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* The callback function is passed the current timer interval and returns
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* the next timer interval. If the returned value is the same as the one
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* passed in, the periodic alarm continues, otherwise a new alarm is
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* scheduled. If the callback returns 0, the periodic alarm is cancelled.
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*/
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typedef Uint32(SDLCALL * SDL_NewTimerCallback) (Uint32 interval, void *param);
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typedef Uint32 (SDLCALL * SDL_TimerCallback) (Uint32 interval, void *param);
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/**
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* Definition of the timer ID type.
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* Definition of the timer ID type.
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*/
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typedef struct _SDL_TimerID *SDL_TimerID;
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typedef int SDL_TimerID;
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/**
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* Add a new timer to the pool of timers already running.
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* \return A timer ID, or NULL when an error occurs.
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* \brief Add a new timer to the pool of timers already running.
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*
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* \return A timer ID, or NULL when an error occurs.
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*/
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extern DECLSPEC SDL_TimerID SDLCALL SDL_AddTimer(Uint32 interval,
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SDL_NewTimerCallback
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callback, void *param);
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SDL_TimerCallback callback,
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void *param);
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/**
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* Remove one of the multiple timers knowing its ID.
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* \return A boolean value indicating success or failure.
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* \brief Remove a timer knowing its ID.
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*
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* \return A boolean value indicating success or failure.
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*
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* \warning It is not safe to remove a timer multiple times.
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*/
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extern DECLSPEC SDL_bool SDLCALL SDL_RemoveTimer(SDL_TimerID t);
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/*@}*//*Peter timers*/
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/* Ends C function definitions when using C++ */
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#ifdef __cplusplus
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