/project/jni/sdl_gfx/include/SDL_framerate.h

https://github.com/aichunyu/FFPlayer · C Header · 79 lines · 36 code · 17 blank · 26 comment · 0 complexity · d3e7162d422b0382d794d96855a86de2 MD5 · raw file 

    

  1. /*
    2. 

    3. 

  3. SDL_framerate: framerate manager
    4. 

    5. 

  5. LGPL (c) A. Schiffler
    6. 

    7. 

  7. */
    8. 

  8. 

  9. #ifndef _SDL_framerate_h
    10. 

  10. #define _SDL_framerate_h
    11. 

  11. 

  12. /* Set up for C function definitions, even when using C++ */
    13. 

  13. #ifdef __cplusplus
    14. 

  14. extern "C" {
    15. 

  15. #endif
    16. 

  16. 

  17. 	/* --- */
    18. 

  18. 

  19. #include "SDL.h"
    20. 

  20. 

  21. 	/* --------- Definitions */
    22. 

  22. 

  23. /*!
    24. 

  24. \brief Highest possible rate supported by framerate controller in Hz (1/s).
    25. 

  25. */
    26. 

  26. #define FPS_UPPER_LIMIT		200
    27. 

  27. 

  28. /*!
    29. 

  29. \brief Lowest possible rate supported by framerate controller in Hz (1/s).
    30. 

  30. */
    31. 

  31. #define FPS_LOWER_LIMIT		1
    32. 

  32. 

  33. /*!
    34. 

  34. \brief Default rate of framerate controller in Hz (1/s).
    35. 

  35. */
    36. 

  36. #define FPS_DEFAULT		30
    37. 

  37. 

  38. /*! 
    39. 

  39. \brief Structure holding the state and timing information of the framerate controller. 
    40. 

  40. */
    41. 

  41. 	typedef struct {
    42. 

  42. 		Uint32 framecount;
    43. 

  43. 		float rateticks;
    44. 

  44. 		Uint32 lastticks;
    45. 

  45. 		Uint32 rate;
    46. 

  46. 	} FPSmanager;
    47. 

  47. 

  48. 	/* --------- Function prototypes */
    49. 

  49. 

  50. #ifdef WIN32
    51. 

  51. #  ifdef DLL_EXPORT
    52. 

  52. #    define SDL_FRAMERATE_SCOPE __declspec(dllexport)
    53. 

  53. #  else
    54. 

  54. #    ifdef LIBSDL_GFX_DLL_IMPORT
    55. 

  55. #      define SDL_FRAMERATE_SCOPE __declspec(dllimport)
    56. 

  56. #    endif
    57. 

  57. #  endif
    58. 

  58. #endif
    59. 

  59. #ifndef SDL_FRAMERATE_SCOPE
    60. 

  60. #  define SDL_FRAMERATE_SCOPE extern
    61. 

  61. #endif
    62. 

  62. 

  63. 	/* Functions return 0 or value for sucess and -1 for error */
    64. 

  64. 

  65. 	SDL_FRAMERATE_SCOPE void SDL_initFramerate(FPSmanager * manager);
    66. 

  66. 	SDL_FRAMERATE_SCOPE int SDL_setFramerate(FPSmanager * manager, int rate);
    67. 

  67. 	SDL_FRAMERATE_SCOPE int SDL_getFramerate(FPSmanager * manager);
    68. 

  68. 	SDL_FRAMERATE_SCOPE int SDL_getFramecount(FPSmanager * manager);
    69. 

  69. 	SDL_FRAMERATE_SCOPE void SDL_framerateDelay(FPSmanager * manager);
    70. 

  70. 

  71. 	/* --- */
    72. 

  72. 

  73. 	/* Ends C function definitions when using C++ */
    74. 

  74. #ifdef __cplusplus
    75. 

  75. }
    76. 

  76. #endif
    77. 

  77. 

  78. #endif				/* _SDL_framerate_h */
    79.