include/SDL_surface.h
author Ozkan Sezer
Sat, 23 Jan 2021 17:30:50 +0300
changeset 14777 9378185b458d
parent 14640 b2b3343a310d
permissions -rw-r--r--
move outdated winmm and psp joystick codes to struct _SDL_JoystickDriver

build-tested only. (bug #5472.)
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 
    22 /**
    23  *  \file SDL_surface.h
    24  *
    25  *  Header file for ::SDL_Surface definition and management functions.
    26  */
    27 
    28 #ifndef SDL_surface_h_
    29 #define SDL_surface_h_
    30 
    31 #include "SDL_stdinc.h"
    32 #include "SDL_pixels.h"
    33 #include "SDL_rect.h"
    34 #include "SDL_blendmode.h"
    35 #include "SDL_rwops.h"
    36 
    37 #include "begin_code.h"
    38 /* Set up for C function definitions, even when using C++ */
    39 #ifdef __cplusplus
    40 extern "C" {
    41 #endif
    42 
    43 /**
    44  *  \name Surface flags
    45  *
    46  *  These are the currently supported flags for the ::SDL_Surface.
    47  *
    48  *  \internal
    49  *  Used internally (read-only).
    50  */
    51 /* @{ */
    52 #define SDL_SWSURFACE       0           /**< Just here for compatibility */
    53 #define SDL_PREALLOC        0x00000001  /**< Surface uses preallocated memory */
    54 #define SDL_RLEACCEL        0x00000002  /**< Surface is RLE encoded */
    55 #define SDL_DONTFREE        0x00000004  /**< Surface is referenced internally */
    56 #define SDL_SIMD_ALIGNED    0x00000008  /**< Surface uses aligned memory */
    57 /* @} *//* Surface flags */
    58 
    59 /**
    60  *  Evaluates to true if the surface needs to be locked before access.
    61  */
    62 #define SDL_MUSTLOCK(S) (((S)->flags & SDL_RLEACCEL) != 0)
    63 
    64 /**
    65  * \brief A collection of pixels used in software blitting.
    66  *
    67  * \note  This structure should be treated as read-only, except for \c pixels,
    68  *        which, if not NULL, contains the raw pixel data for the surface.
    69  */
    70 typedef struct SDL_Surface
    71 {
    72     Uint32 flags;               /**< Read-only */
    73     SDL_PixelFormat *format;    /**< Read-only */
    74     int w, h;                   /**< Read-only */
    75     int pitch;                  /**< Read-only */
    76     void *pixels;               /**< Read-write */
    77 
    78     /** Application data associated with the surface */
    79     void *userdata;             /**< Read-write */
    80 
    81     /** information needed for surfaces requiring locks */
    82     int locked;                 /**< Read-only */
    83 
    84     /** list of BlitMap that hold a reference to this surface */
    85     void *list_blitmap;         /**< Private */
    86 
    87     /** clipping information */
    88     SDL_Rect clip_rect;         /**< Read-only */
    89 
    90     /** info for fast blit mapping to other surfaces */
    91     struct SDL_BlitMap *map;    /**< Private */
    92 
    93     /** Reference count -- used when freeing surface */
    94     int refcount;               /**< Read-mostly */
    95 } SDL_Surface;
    96 
    97 /**
    98  * \brief The type of function used for surface blitting functions.
    99  */
   100 typedef int (SDLCALL *SDL_blit) (struct SDL_Surface * src, SDL_Rect * srcrect,
   101                                  struct SDL_Surface * dst, SDL_Rect * dstrect);
   102 
   103 /**
   104  * \brief The formula used for converting between YUV and RGB
   105  */
   106 typedef enum
   107 {
   108     SDL_YUV_CONVERSION_JPEG,        /**< Full range JPEG */
   109     SDL_YUV_CONVERSION_BT601,       /**< BT.601 (the default) */
   110     SDL_YUV_CONVERSION_BT709,       /**< BT.709 */
   111     SDL_YUV_CONVERSION_AUTOMATIC    /**< BT.601 for SD content, BT.709 for HD content */
   112 } SDL_YUV_CONVERSION_MODE;
   113 
   114 /**
   115  *  Allocate and free an RGB surface.
   116  *
   117  *  If the depth is 4 or 8 bits, an empty palette is allocated for the surface.
   118  *  If the depth is greater than 8 bits, the pixel format is set using the
   119  *  flags '[RGB]mask'.
   120  *
   121  *  If the function runs out of memory, it will return NULL.
   122  *
   123  *  \param flags The \c flags are obsolete and should be set to 0.
   124  *  \param width The width in pixels of the surface to create.
   125  *  \param height The height in pixels of the surface to create.
   126  *  \param depth The depth in bits of the surface to create.
   127  *  \param Rmask The red mask of the surface to create.
   128  *  \param Gmask The green mask of the surface to create.
   129  *  \param Bmask The blue mask of the surface to create.
   130  *  \param Amask The alpha mask of the surface to create.
   131  */
   132 extern DECLSPEC SDL_Surface *SDLCALL SDL_CreateRGBSurface
   133     (Uint32 flags, int width, int height, int depth,
   134      Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask);
   135 
   136 /* !!! FIXME for 2.1: why does this ask for depth? Format provides that. */
   137 extern DECLSPEC SDL_Surface *SDLCALL SDL_CreateRGBSurfaceWithFormat
   138     (Uint32 flags, int width, int height, int depth, Uint32 format);
   139 
   140 extern DECLSPEC SDL_Surface *SDLCALL SDL_CreateRGBSurfaceFrom(void *pixels,
   141                                                               int width,
   142                                                               int height,
   143                                                               int depth,
   144                                                               int pitch,
   145                                                               Uint32 Rmask,
   146                                                               Uint32 Gmask,
   147                                                               Uint32 Bmask,
   148                                                               Uint32 Amask);
   149 extern DECLSPEC SDL_Surface *SDLCALL SDL_CreateRGBSurfaceWithFormatFrom
   150     (void *pixels, int width, int height, int depth, int pitch, Uint32 format);
   151 extern DECLSPEC void SDLCALL SDL_FreeSurface(SDL_Surface * surface);
   152 
   153 /**
   154  *  \brief Set the palette used by a surface.
   155  *
   156  *  \return 0, or -1 if the surface format doesn't use a palette.
   157  *
   158  *  \note A single palette can be shared with many surfaces.
   159  */
   160 extern DECLSPEC int SDLCALL SDL_SetSurfacePalette(SDL_Surface * surface,
   161                                                   SDL_Palette * palette);
   162 
   163 /**
   164  *  \brief Sets up a surface for directly accessing the pixels.
   165  *
   166  *  Between calls to SDL_LockSurface() / SDL_UnlockSurface(), you can write
   167  *  to and read from \c surface->pixels, using the pixel format stored in
   168  *  \c surface->format.  Once you are done accessing the surface, you should
   169  *  use SDL_UnlockSurface() to release it.
   170  *
   171  *  Not all surfaces require locking.  If SDL_MUSTLOCK(surface) evaluates
   172  *  to 0, then you can read and write to the surface at any time, and the
   173  *  pixel format of the surface will not change.
   174  *
   175  *  No operating system or library calls should be made between lock/unlock
   176  *  pairs, as critical system locks may be held during this time.
   177  *
   178  *  SDL_LockSurface() returns 0, or -1 if the surface couldn't be locked.
   179  *
   180  *  \sa SDL_UnlockSurface()
   181  */
   182 extern DECLSPEC int SDLCALL SDL_LockSurface(SDL_Surface * surface);
   183 /** \sa SDL_LockSurface() */
   184 extern DECLSPEC void SDLCALL SDL_UnlockSurface(SDL_Surface * surface);
   185 
   186 /**
   187  *  Load a surface from a seekable SDL data stream (memory or file).
   188  *
   189  *  If \c freesrc is non-zero, the stream will be closed after being read.
   190  *
   191  *  The new surface should be freed with SDL_FreeSurface().
   192  *
   193  *  \return the new surface, or NULL if there was an error.
   194  */
   195 extern DECLSPEC SDL_Surface *SDLCALL SDL_LoadBMP_RW(SDL_RWops * src,
   196                                                     int freesrc);
   197 
   198 /**
   199  *  Load a surface from a file.
   200  *
   201  *  Convenience macro.
   202  */
   203 #define SDL_LoadBMP(file)   SDL_LoadBMP_RW(SDL_RWFromFile(file, "rb"), 1)
   204 
   205 /**
   206  *  Save a surface to a seekable SDL data stream (memory or file).
   207  *
   208  *  Surfaces with a 24-bit, 32-bit and paletted 8-bit format get saved in the
   209  *  BMP directly. Other RGB formats with 8-bit or higher get converted to a
   210  *  24-bit surface or, if they have an alpha mask or a colorkey, to a 32-bit
   211  *  surface before they are saved. YUV and paletted 1-bit and 4-bit formats are
   212  *  not supported.
   213  *
   214  *  If \c freedst is non-zero, the stream will be closed after being written.
   215  *
   216  *  \return 0 if successful or -1 if there was an error.
   217  */
   218 extern DECLSPEC int SDLCALL SDL_SaveBMP_RW
   219     (SDL_Surface * surface, SDL_RWops * dst, int freedst);
   220 
   221 /**
   222  *  Save a surface to a file.
   223  *
   224  *  Convenience macro.
   225  */
   226 #define SDL_SaveBMP(surface, file) \
   227         SDL_SaveBMP_RW(surface, SDL_RWFromFile(file, "wb"), 1)
   228 
   229 /**
   230  *  \brief Sets the RLE acceleration hint for a surface.
   231  *
   232  *  \return 0 on success, or -1 if the surface is not valid
   233  *
   234  *  \note If RLE is enabled, colorkey and alpha blending blits are much faster,
   235  *        but the surface must be locked before directly accessing the pixels.
   236  */
   237 extern DECLSPEC int SDLCALL SDL_SetSurfaceRLE(SDL_Surface * surface,
   238                                               int flag);
   239 
   240 /**
   241  *  \brief Returns whether the surface is RLE enabled
   242  *
   243  *  \return SDL_TRUE if the surface is RLE enabled, or SDL_FALSE if the surface is NULL or not RLE enabled
   244  */
   245 extern DECLSPEC SDL_bool SDLCALL SDL_HasSurfaceRLE(SDL_Surface * surface);
   246 
   247 /**
   248  *  \brief Sets the color key (transparent pixel) in a blittable surface.
   249  *
   250  *  \param surface The surface to update
   251  *  \param flag Non-zero to enable colorkey and 0 to disable colorkey
   252  *  \param key The transparent pixel in the native surface format
   253  *
   254  *  \return 0 on success, or -1 if the surface is not valid
   255  *
   256  *  You can pass SDL_RLEACCEL to enable RLE accelerated blits.
   257  */
   258 extern DECLSPEC int SDLCALL SDL_SetColorKey(SDL_Surface * surface,
   259                                             int flag, Uint32 key);
   260 
   261 /**
   262  *  \brief Returns whether the surface has a color key
   263  *
   264  *  \return SDL_TRUE if the surface has a color key, or SDL_FALSE if the surface is NULL or has no color key
   265  */
   266 extern DECLSPEC SDL_bool SDLCALL SDL_HasColorKey(SDL_Surface * surface);
   267 
   268 /**
   269  *  \brief Gets the color key (transparent pixel) in a blittable surface.
   270  *
   271  *  \param surface The surface to update
   272  *  \param key A pointer filled in with the transparent pixel in the native
   273  *             surface format
   274  *
   275  *  \return 0 on success, or -1 if the surface is not valid or colorkey is not
   276  *          enabled.
   277  */
   278 extern DECLSPEC int SDLCALL SDL_GetColorKey(SDL_Surface * surface,
   279                                             Uint32 * key);
   280 
   281 /**
   282  *  \brief Set an additional color value used in blit operations.
   283  *
   284  *  \param surface The surface to update.
   285  *  \param r The red color value multiplied into blit operations.
   286  *  \param g The green color value multiplied into blit operations.
   287  *  \param b The blue color value multiplied into blit operations.
   288  *
   289  *  \return 0 on success, or -1 if the surface is not valid.
   290  *
   291  *  \sa SDL_GetSurfaceColorMod()
   292  */
   293 extern DECLSPEC int SDLCALL SDL_SetSurfaceColorMod(SDL_Surface * surface,
   294                                                    Uint8 r, Uint8 g, Uint8 b);
   295 
   296 
   297 /**
   298  *  \brief Get the additional color value used in blit operations.
   299  *
   300  *  \param surface The surface to query.
   301  *  \param r A pointer filled in with the current red color value.
   302  *  \param g A pointer filled in with the current green color value.
   303  *  \param b A pointer filled in with the current blue color value.
   304  *
   305  *  \return 0 on success, or -1 if the surface is not valid.
   306  *
   307  *  \sa SDL_SetSurfaceColorMod()
   308  */
   309 extern DECLSPEC int SDLCALL SDL_GetSurfaceColorMod(SDL_Surface * surface,
   310                                                    Uint8 * r, Uint8 * g,
   311                                                    Uint8 * b);
   312 
   313 /**
   314  *  \brief Set an additional alpha value used in blit operations.
   315  *
   316  *  \param surface The surface to update.
   317  *  \param alpha The alpha value multiplied into blit operations.
   318  *
   319  *  \return 0 on success, or -1 if the surface is not valid.
   320  *
   321  *  \sa SDL_GetSurfaceAlphaMod()
   322  */
   323 extern DECLSPEC int SDLCALL SDL_SetSurfaceAlphaMod(SDL_Surface * surface,
   324                                                    Uint8 alpha);
   325 
   326 /**
   327  *  \brief Get the additional alpha value used in blit operations.
   328  *
   329  *  \param surface The surface to query.
   330  *  \param alpha A pointer filled in with the current alpha value.
   331  *
   332  *  \return 0 on success, or -1 if the surface is not valid.
   333  *
   334  *  \sa SDL_SetSurfaceAlphaMod()
   335  */
   336 extern DECLSPEC int SDLCALL SDL_GetSurfaceAlphaMod(SDL_Surface * surface,
   337                                                    Uint8 * alpha);
   338 
   339 /**
   340  *  \brief Set the blend mode used for blit operations.
   341  *
   342  *  \param surface The surface to update.
   343  *  \param blendMode ::SDL_BlendMode to use for blit blending.
   344  *
   345  *  \return 0 on success, or -1 if the parameters are not valid.
   346  *
   347  *  \sa SDL_GetSurfaceBlendMode()
   348  */
   349 extern DECLSPEC int SDLCALL SDL_SetSurfaceBlendMode(SDL_Surface * surface,
   350                                                     SDL_BlendMode blendMode);
   351 
   352 /**
   353  *  \brief Get the blend mode used for blit operations.
   354  *
   355  *  \param surface   The surface to query.
   356  *  \param blendMode A pointer filled in with the current blend mode.
   357  *
   358  *  \return 0 on success, or -1 if the surface is not valid.
   359  *
   360  *  \sa SDL_SetSurfaceBlendMode()
   361  */
   362 extern DECLSPEC int SDLCALL SDL_GetSurfaceBlendMode(SDL_Surface * surface,
   363                                                     SDL_BlendMode *blendMode);
   364 
   365 /**
   366  *  Sets the clipping rectangle for the destination surface in a blit.
   367  *
   368  *  If the clip rectangle is NULL, clipping will be disabled.
   369  *
   370  *  If the clip rectangle doesn't intersect the surface, the function will
   371  *  return SDL_FALSE and blits will be completely clipped.  Otherwise the
   372  *  function returns SDL_TRUE and blits to the surface will be clipped to
   373  *  the intersection of the surface area and the clipping rectangle.
   374  *
   375  *  Note that blits are automatically clipped to the edges of the source
   376  *  and destination surfaces.
   377  */
   378 extern DECLSPEC SDL_bool SDLCALL SDL_SetClipRect(SDL_Surface * surface,
   379                                                  const SDL_Rect * rect);
   380 
   381 /**
   382  *  Gets the clipping rectangle for the destination surface in a blit.
   383  *
   384  *  \c rect must be a pointer to a valid rectangle which will be filled
   385  *  with the correct values.
   386  */
   387 extern DECLSPEC void SDLCALL SDL_GetClipRect(SDL_Surface * surface,
   388                                              SDL_Rect * rect);
   389 
   390 /*
   391  * Creates a new surface identical to the existing surface
   392  */
   393 extern DECLSPEC SDL_Surface *SDLCALL SDL_DuplicateSurface(SDL_Surface * surface);
   394 
   395 /**
   396  *  Creates a new surface of the specified format, and then copies and maps
   397  *  the given surface to it so the blit of the converted surface will be as
   398  *  fast as possible.  If this function fails, it returns NULL.
   399  *
   400  *  The \c flags parameter is passed to SDL_CreateRGBSurface() and has those
   401  *  semantics.  You can also pass ::SDL_RLEACCEL in the flags parameter and
   402  *  SDL will try to RLE accelerate colorkey and alpha blits in the resulting
   403  *  surface.
   404  */
   405 extern DECLSPEC SDL_Surface *SDLCALL SDL_ConvertSurface
   406     (SDL_Surface * src, const SDL_PixelFormat * fmt, Uint32 flags);
   407 extern DECLSPEC SDL_Surface *SDLCALL SDL_ConvertSurfaceFormat
   408     (SDL_Surface * src, Uint32 pixel_format, Uint32 flags);
   409 
   410 /**
   411  * \brief Copy a block of pixels of one format to another format
   412  *
   413  *  \return 0 on success, or -1 if there was an error
   414  */
   415 extern DECLSPEC int SDLCALL SDL_ConvertPixels(int width, int height,
   416                                               Uint32 src_format,
   417                                               const void * src, int src_pitch,
   418                                               Uint32 dst_format,
   419                                               void * dst, int dst_pitch);
   420 
   421 /**
   422  *  Performs a fast fill of the given rectangle with \c color.
   423  *
   424  *  If \c rect is NULL, the whole surface will be filled with \c color.
   425  *
   426  *  The color should be a pixel of the format used by the surface, and
   427  *  can be generated by the SDL_MapRGB() function.
   428  *
   429  *  \return 0 on success, or -1 on error.
   430  */
   431 extern DECLSPEC int SDLCALL SDL_FillRect
   432     (SDL_Surface * dst, const SDL_Rect * rect, Uint32 color);
   433 extern DECLSPEC int SDLCALL SDL_FillRects
   434     (SDL_Surface * dst, const SDL_Rect * rects, int count, Uint32 color);
   435 
   436 /**
   437  *  Performs a fast blit from the source surface to the destination surface.
   438  *
   439  *  This assumes that the source and destination rectangles are
   440  *  the same size.  If either \c srcrect or \c dstrect are NULL, the entire
   441  *  surface (\c src or \c dst) is copied.  The final blit rectangles are saved
   442  *  in \c srcrect and \c dstrect after all clipping is performed.
   443  *
   444  *  \return If the blit is successful, it returns 0, otherwise it returns -1.
   445  *
   446  *  The blit function should not be called on a locked surface.
   447  *
   448  *  The blit semantics for surfaces with and without blending and colorkey
   449  *  are defined as follows:
   450  *  \verbatim
   451     RGBA->RGB:
   452       Source surface blend mode set to SDL_BLENDMODE_BLEND:
   453         alpha-blend (using the source alpha-channel and per-surface alpha)
   454         SDL_SRCCOLORKEY ignored.
   455       Source surface blend mode set to SDL_BLENDMODE_NONE:
   456         copy RGB.
   457         if SDL_SRCCOLORKEY set, only copy the pixels matching the
   458         RGB values of the source color key, ignoring alpha in the
   459         comparison.
   460 
   461     RGB->RGBA:
   462       Source surface blend mode set to SDL_BLENDMODE_BLEND:
   463         alpha-blend (using the source per-surface alpha)
   464       Source surface blend mode set to SDL_BLENDMODE_NONE:
   465         copy RGB, set destination alpha to source per-surface alpha value.
   466       both:
   467         if SDL_SRCCOLORKEY set, only copy the pixels matching the
   468         source color key.
   469 
   470     RGBA->RGBA:
   471       Source surface blend mode set to SDL_BLENDMODE_BLEND:
   472         alpha-blend (using the source alpha-channel and per-surface alpha)
   473         SDL_SRCCOLORKEY ignored.
   474       Source surface blend mode set to SDL_BLENDMODE_NONE:
   475         copy all of RGBA to the destination.
   476         if SDL_SRCCOLORKEY set, only copy the pixels matching the
   477         RGB values of the source color key, ignoring alpha in the
   478         comparison.
   479 
   480     RGB->RGB:
   481       Source surface blend mode set to SDL_BLENDMODE_BLEND:
   482         alpha-blend (using the source per-surface alpha)
   483       Source surface blend mode set to SDL_BLENDMODE_NONE:
   484         copy RGB.
   485       both:
   486         if SDL_SRCCOLORKEY set, only copy the pixels matching the
   487         source color key.
   488     \endverbatim
   489  *
   490  *  You should call SDL_BlitSurface() unless you know exactly how SDL
   491  *  blitting works internally and how to use the other blit functions.
   492  */
   493 #define SDL_BlitSurface SDL_UpperBlit
   494 
   495 /**
   496  *  This is the public blit function, SDL_BlitSurface(), and it performs
   497  *  rectangle validation and clipping before passing it to SDL_LowerBlit()
   498  */
   499 extern DECLSPEC int SDLCALL SDL_UpperBlit
   500     (SDL_Surface * src, const SDL_Rect * srcrect,
   501      SDL_Surface * dst, SDL_Rect * dstrect);
   502 
   503 /**
   504  *  This is a semi-private blit function and it performs low-level surface
   505  *  blitting only.
   506  */
   507 extern DECLSPEC int SDLCALL SDL_LowerBlit
   508     (SDL_Surface * src, SDL_Rect * srcrect,
   509      SDL_Surface * dst, SDL_Rect * dstrect);
   510 
   511 /**
   512  *  \brief Perform a fast, low quality, stretch blit between two surfaces of the
   513  *         same pixel format.
   514  *
   515  *  \note This function uses a static buffer, and is not thread-safe.
   516  */
   517 extern DECLSPEC int SDLCALL SDL_SoftStretch(SDL_Surface * src,
   518                                             const SDL_Rect * srcrect,
   519                                             SDL_Surface * dst,
   520                                             const SDL_Rect * dstrect);
   521 
   522 /**
   523  *  \brief Perform a bilinear scaling between two surfaces of the
   524  *         same pixel format, 32BPP.
   525  *
   526  */
   527 extern DECLSPEC int SDLCALL SDL_SoftStretchLinear(SDL_Surface * src,
   528                                             const SDL_Rect * srcrect,
   529                                             SDL_Surface * dst,
   530                                             const SDL_Rect * dstrect);
   531 
   532 
   533 #define SDL_BlitScaled SDL_UpperBlitScaled
   534 
   535 /**
   536  *  This is the public scaled blit function, SDL_BlitScaled(), and it performs
   537  *  rectangle validation and clipping before passing it to SDL_LowerBlitScaled()
   538  */
   539 extern DECLSPEC int SDLCALL SDL_UpperBlitScaled
   540     (SDL_Surface * src, const SDL_Rect * srcrect,
   541     SDL_Surface * dst, SDL_Rect * dstrect);
   542 
   543 /**
   544  *  This is a semi-private blit function and it performs low-level surface
   545  *  scaled blitting only.
   546  */
   547 extern DECLSPEC int SDLCALL SDL_LowerBlitScaled
   548     (SDL_Surface * src, SDL_Rect * srcrect,
   549     SDL_Surface * dst, SDL_Rect * dstrect);
   550 
   551 /**
   552  *  \brief Set the YUV conversion mode
   553  */
   554 extern DECLSPEC void SDLCALL SDL_SetYUVConversionMode(SDL_YUV_CONVERSION_MODE mode);
   555 
   556 /**
   557  *  \brief Get the YUV conversion mode
   558  */
   559 extern DECLSPEC SDL_YUV_CONVERSION_MODE SDLCALL SDL_GetYUVConversionMode(void);
   560 
   561 /**
   562  *  \brief Get the YUV conversion mode, returning the correct mode for the resolution when the current conversion mode is SDL_YUV_CONVERSION_AUTOMATIC
   563  */
   564 extern DECLSPEC SDL_YUV_CONVERSION_MODE SDLCALL SDL_GetYUVConversionModeForResolution(int width, int height);
   565 
   566 /* Ends C function definitions when using C++ */
   567 #ifdef __cplusplus
   568 }
   569 #endif
   570 #include "close_code.h"
   571 
   572 #endif /* SDL_surface_h_ */
   573 
   574 /* vi: set ts=4 sw=4 expandtab: */