SDL_image.h

/*
  SDL_image:  An example image loading library for use with SDL
  Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
*/

/**
 *  \file SDL_image.h
 *
 *  Header file for SDL_image library
 *
 * A simple library to load images of various formats as SDL surfaces
 */
#ifndef SDL_IMAGE_H_
#define SDL_IMAGE_H_

#include "SDL.h"
#include "SDL_version.h"
#include "begin_code.h"

/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif

/**
 * Printable format: "%d.%d.%d", MAJOR, MINOR, PATCHLEVEL
 */
#define SDL_IMAGE_MAJOR_VERSION 2
#define SDL_IMAGE_MINOR_VERSION 7
#define SDL_IMAGE_PATCHLEVEL    0

/**
 * This macro can be used to fill a version structure with the compile-time
 * version of the SDL_image library.
 */
#define SDL_IMAGE_VERSION(X)                        \
{                                                   \
    (X)->major = SDL_IMAGE_MAJOR_VERSION;           \
    (X)->minor = SDL_IMAGE_MINOR_VERSION;           \
    (X)->patch = SDL_IMAGE_PATCHLEVEL;              \
}

#if SDL_IMAGE_MAJOR_VERSION < 3 && SDL_MAJOR_VERSION < 3
/**
 *  This is the version number macro for the current SDL_image version.
 *
 *  In versions higher than 2.9.0, the minor version overflows into
 *  the thousands digit: for example, 2.23.0 is encoded as 4300.
 *  This macro will not be available in SDL 3.x or SDL_image 3.x.
 *
 *  Deprecated, use SDL_IMAGE_VERSION_ATLEAST or SDL_IMAGE_VERSION instead.
 */
#define SDL_IMAGE_COMPILEDVERSION \
    SDL_VERSIONNUM(SDL_IMAGE_MAJOR_VERSION, SDL_IMAGE_MINOR_VERSION, SDL_IMAGE_PATCHLEVEL)
#endif /* SDL_IMAGE_MAJOR_VERSION < 3 && SDL_MAJOR_VERSION < 3 */

/**
 *  This macro will evaluate to true if compiled with SDL_image at least X.Y.Z.
 */
#define SDL_IMAGE_VERSION_ATLEAST(X, Y, Z) \
    ((SDL_IMAGE_MAJOR_VERSION >= X) && \
     (SDL_IMAGE_MAJOR_VERSION > X || SDL_IMAGE_MINOR_VERSION >= Y) && \
     (SDL_IMAGE_MAJOR_VERSION > X || SDL_IMAGE_MINOR_VERSION > Y || SDL_IMAGE_PATCHLEVEL >= Z))

/**
 * This function gets the version of the dynamically linked SDL_image library.
 *
 * it should NOT be used to fill a version structure, instead you should use
 * the SDL_IMAGE_VERSION() macro.
 *
 * \returns SDL_image version
 */
extern DECLSPEC const SDL_version * SDLCALL IMG_Linked_Version(void);

/**
 * Initialization flags
 */
typedef enum
{
    IMG_INIT_JPG    = 0x00000001,
    IMG_INIT_PNG    = 0x00000002,
    IMG_INIT_TIF    = 0x00000004,
    IMG_INIT_WEBP   = 0x00000008,
    IMG_INIT_JXL    = 0x00000010,
    IMG_INIT_AVIF   = 0x00000020
} IMG_InitFlags;

/**
 * Initialize SDL_image.
 *
 * This function loads dynamic libraries that SDL_image needs, and prepares
 * them for use. This must be the first function you call in SDL_image, and if
 * it fails you should not continue with the library.
 *
 * Flags should be one or more flags from IMG_InitFlags OR'd together. It
 * returns the flags successfully initialized, or 0 on failure.
 *
 * Currently, these flags are:
 *
 * - `_INIT_JPG`
 * - `_INIT_PNG`
 * - `_INIT_TIF`
 * - `_INIT_WEBP`
 * - `_INIT_JXL`
 * - `_INIT_AVIF`
 *
 * More flags may be added in a future SDL_image release.
 *
 * This function may need to load external shared libraries to support various
 * codecs, which means this function can fail to initialize that support on an
 * otherwise-reasonable system if the library isn't available; this is not
 * just a question of exceptional circumstances like running out of memory at
 * startup!
 *
 * Note that you may call this function more than once to initialize with
 * additional flags. The return value will reflect both new flags that
 * successfully initialized, and also include flags that had previously been
 * initialized as well.
 *
 * As this will return previously-initialized flags, it's legal to call this
 * with zero (no flags set). This is a safe no-op that can be used to query
 * the current initialization state without changing it at all.
 *
 * Since this returns previously-initialized flags as well as new ones, and
 * you can call this with zero, you should not check for a zero return value
 * to determine an error condition. Instead, you should check to make sure all
 * the flags you require are set in the return value. If you have a game with
 * data in a specific format, this might be a fatal error. If you're a generic
 * image displaying app, perhaps you are fine with only having JPG and PNG
 * support and can live without WEBP, even if you request support for
 * everything.
 *
 * Unlike other SDL satellite libraries, calls to IMG_Init do not stack; a
 * single call to IMG_Quit() will deinitialize everything and does not have to
 * be paired with a matching IMG_Init call. For that reason, it's considered
 * best practices to have a single IMG_Init and IMG_Quit call in your program.
 * While this isn't required, be aware of the risks of deviating from that
 * behavior.
 *
 * After initializing SDL_image, the app may begin to load images into
 * SDL_Surfaces or SDL_Textures.
 *
 * \param flags initialization flags, OR'd together.
 * \returns all currently initialized flags.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_Quit
 */
extern DECLSPEC int SDLCALL IMG_Init(int flags);

/**
 * Deinitialize SDL_image.
 *
 * This should be the last function you call in SDL_image, after freeing all
 * other resources. This will unload any shared libraries it is using for
 * various codecs.
 *
 * After this call, a call to IMG_Init(0) will return 0 (no codecs loaded).
 *
 * You can safely call IMG_Init() to reload various codec support after this
 * call.
 *
 * Unlike other SDL satellite libraries, calls to IMG_Init do not stack; a
 * single call to IMG_Quit() will deinitialize everything and does not have to
 * be paired with a matching IMG_Init call. For that reason, it's considered
 * best practices to have a single IMG_Init and IMG_Quit call in your program.
 * While this isn't required, be aware of the risks of deviating from that
 * behavior.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_Init
 */
extern DECLSPEC void SDLCALL IMG_Quit(void);

/**
 * Load an image from an SDL data source into a software surface.
 *
 * An SDL_Surface is a buffer of pixels in memory accessible by the CPU. Use
 * this if you plan to hand the data to something else or manipulate it
 * further in code.
 *
 * There are no guarantees about what format the new SDL_Surface data will be;
 * in many cases, SDL_image will attempt to supply a surface that exactly
 * matches the provided image, but in others it might have to convert (either
 * because the image is in a format that SDL doesn't directly support or
 * because it's compressed data that could reasonably uncompress to various
 * formats and SDL_image had to pick one). You can inspect an SDL_Surface for
 * its specifics, and use SDL_ConvertSurface to then migrate to any supported
 * format.
 *
 * If the image format supports a transparent pixel, SDL will set the colorkey
 * for the surface. You can enable RLE acceleration on the surface afterwards
 * by calling: SDL_SetColorKey(image, SDL_RLEACCEL, image->format->colorkey);
 *
 * If `freesrc` is non-zero, the RWops will be closed before returning,
 * whether this function succeeds or not. SDL_image reads everything it needs
 * from the RWops during this call in any case.
 *
 * Even though this function accepts a file type, SDL_image may still try
 * other decoders that are capable of detecting file type from the contents of
 * the image data, but may rely on the caller-provided type string for formats
 * that it cannot autodetect. If `type` is NULL, SDL_image will rely solely on
 * its ability to guess the format.
 *
 * There is a separate function to read files from disk without having to deal
 * with SDL_RWops: `IMG_Load("filename.jpg")` will call this function and
 * manage those details for you, determining the file type from the filename's
 * extension.
 *
 * There is also IMG_Load_RW(), which is equivalent to this function except
 * that it will rely on SDL_image to determine what type of data it is
 * loading, much like passing a NULL for type.
 *
 * If you are using SDL's 2D rendering API, there is an equivalent call to
 * load images directly into an SDL_Texture for use by the GPU without using a
 * software surface: call IMG_LoadTextureTyped_RW() instead.
 *
 * When done with the returned surface, the app should dispose of it with a
 * call to SDL_FreeSurface().
 *
 * \param src an SDL_RWops that data will be read from.
 * \param freesrc non-zero to close/free the SDL_RWops before returning, zero
 *                to leave it open.
 * \param type a filename extension that represent this data ("BMP", "GIF",
 *             "PNG", etc).
 * \returns a new SDL surface, or NULL on error.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_Load
 * \sa IMG_Load_RW
 * \sa SDL_FreeSurface
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadTyped_RW(SDL_RWops *src, int freesrc, const char *type);

/**
 * Load an image from a filesystem path into a software surface.
 *
 * An SDL_Surface is a buffer of pixels in memory accessible by the CPU. Use
 * this if you plan to hand the data to something else or manipulate it
 * further in code.
 *
 * There are no guarantees about what format the new SDL_Surface data will be;
 * in many cases, SDL_image will attempt to supply a surface that exactly
 * matches the provided image, but in others it might have to convert (either
 * because the image is in a format that SDL doesn't directly support or
 * because it's compressed data that could reasonably uncompress to various
 * formats and SDL_image had to pick one). You can inspect an SDL_Surface for
 * its specifics, and use SDL_ConvertSurface to then migrate to any supported
 * format.
 *
 * If the image format supports a transparent pixel, SDL will set the colorkey
 * for the surface. You can enable RLE acceleration on the surface afterwards
 * by calling: SDL_SetColorKey(image, SDL_RLEACCEL, image->format->colorkey);
 *
 * There is a separate function to read files from an SDL_RWops, if you need
 * an i/o abstraction to provide data from anywhere instead of a simple
 * filesystem read; that function is IMG_Load_RW().
 *
 * If you are using SDL's 2D rendering API, there is an equivalent call to
 * load images directly into an SDL_Texture for use by the GPU without using a
 * software surface: call IMG_LoadTexture() instead.
 *
 * When done with the returned surface, the app should dispose of it with a
 * call to SDL_FreeSurface().
 *
 * \param file a path on the filesystem to load an image from.
 * \returns a new SDL surface, or NULL on error.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadTyped_RW
 * \sa IMG_Load_RW
 * \sa SDL_FreeSurface
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_Load(const char *file);

/**
 * Load an image from an SDL data source into a software surface.
 *
 * An SDL_Surface is a buffer of pixels in memory accessible by the CPU. Use
 * this if you plan to hand the data to something else or manipulate it
 * further in code.
 *
 * There are no guarantees about what format the new SDL_Surface data will be;
 * in many cases, SDL_image will attempt to supply a surface that exactly
 * matches the provided image, but in others it might have to convert (either
 * because the image is in a format that SDL doesn't directly support or
 * because it's compressed data that could reasonably uncompress to various
 * formats and SDL_image had to pick one). You can inspect an SDL_Surface for
 * its specifics, and use SDL_ConvertSurface to then migrate to any supported
 * format.
 *
 * If the image format supports a transparent pixel, SDL will set the colorkey
 * for the surface. You can enable RLE acceleration on the surface afterwards
 * by calling: SDL_SetColorKey(image, SDL_RLEACCEL, image->format->colorkey);
 *
 * If `freesrc` is non-zero, the RWops will be closed before returning,
 * whether this function succeeds or not. SDL_image reads everything it needs
 * from the RWops during this call in any case.
 *
 * There is a separate function to read files from disk without having to deal
 * with SDL_RWops: `IMG_Load("filename.jpg")` will call this function and
 * manage those details for you, determining the file type from the filename's
 * extension.
 *
 * There is also IMG_LoadTyped_RW(), which is equivalent to this function
 * except a file extension (like "BMP", "JPG", etc) can be specified, in case
 * SDL_image cannot autodetect the file format.
 *
 * If you are using SDL's 2D rendering API, there is an equivalent call to
 * load images directly into an SDL_Texture for use by the GPU without using a
 * software surface: call IMG_LoadTexture_RW() instead.
 *
 * When done with the returned surface, the app should dispose of it with a
 * call to SDL_FreeSurface().
 *
 * \param src an SDL_RWops that data will be read from.
 * \param freesrc non-zero to close/free the SDL_RWops before returning, zero
 *                to leave it open.
 * \returns a new SDL surface, or NULL on error.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_Load
 * \sa IMG_LoadTyped_RW
 * \sa SDL_FreeSurface
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_Load_RW(SDL_RWops *src, int freesrc);

#if SDL_VERSION_ATLEAST(2,0,0)

/**
 * Load an image from a filesystem path into a GPU texture.
 *
 * An SDL_Texture represents an image in GPU memory, usable by SDL's 2D Render
 * API. This can be significantly more efficient than using a CPU-bound
 * SDL_Surface if you don't need to manipulate the image directly after
 * loading it.
 *
 * If the loaded image has transparency or a colorkey, a texture with an alpha
 * channel will be created. Otherwise, SDL_image will attempt to create an
 * SDL_Texture in the most format that most reasonably represents the image
 * data (but in many cases, this will just end up being 32-bit RGB or 32-bit
 * RGBA).
 *
 * There is a separate function to read files from an SDL_RWops, if you need
 * an i/o abstraction to provide data from anywhere instead of a simple
 * filesystem read; that function is IMG_LoadTexture_RW().
 *
 * If you would rather decode an image to an SDL_Surface (a buffer of pixels
 * in CPU memory), call IMG_Load() instead.
 *
 * When done with the returned texture, the app should dispose of it with a
 * call to SDL_DestroyTexture().
 *
 * \param renderer the SDL_Renderer to use to create the GPU texture.
 * \param file a path on the filesystem to load an image from.
 * \returns a new texture, or NULL on error.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadTextureTyped_RW
 * \sa IMG_LoadTexture_RW
 * \sa [SDL_DestroyTexture](https://wiki.libsdl.org/SDL_DestroyTexture)
 */
extern DECLSPEC SDL_Texture * SDLCALL IMG_LoadTexture(SDL_Renderer *renderer, const char *file);

/**
 * Load an image from an SDL data source into a GPU texture.
 *
 * An SDL_Texture represents an image in GPU memory, usable by SDL's 2D Render
 * API. This can be significantly more efficient than using a CPU-bound
 * SDL_Surface if you don't need to manipulate the image directly after
 * loading it.
 *
 * If the loaded image has transparency or a colorkey, a texture with an alpha
 * channel will be created. Otherwise, SDL_image will attempt to create an
 * SDL_Texture in the most format that most reasonably represents the image
 * data (but in many cases, this will just end up being 32-bit RGB or 32-bit
 * RGBA).
 *
 * If `freesrc` is non-zero, the RWops will be closed before returning,
 * whether this function succeeds or not. SDL_image reads everything it needs
 * from the RWops during this call in any case.
 *
 * There is a separate function to read files from disk without having to deal
 * with SDL_RWops: `IMG_LoadTexture(renderer, "filename.jpg")` will call this
 * function and manage those details for you, determining the file type from
 * the filename's extension.
 *
 * There is also IMG_LoadTextureTyped_RW(), which is equivalent to this
 * function except a file extension (like "BMP", "JPG", etc) can be specified,
 * in case SDL_image cannot autodetect the file format.
 *
 * If you would rather decode an image to an SDL_Surface (a buffer of pixels
 * in CPU memory), call IMG_Load() instead.
 *
 * When done with the returned texture, the app should dispose of it with a
 * call to SDL_DestroyTexture().
 *
 * \param renderer the SDL_Renderer to use to create the GPU texture.
 * \param src an SDL_RWops that data will be read from.
 * \param freesrc non-zero to close/free the SDL_RWops before returning, zero
 *                to leave it open.
 * \returns a new texture, or NULL on error.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadTexture
 * \sa IMG_LoadTextureTyped_RW
 * \sa SDL_DestroyTexture
 */
extern DECLSPEC SDL_Texture * SDLCALL IMG_LoadTexture_RW(SDL_Renderer *renderer, SDL_RWops *src, int freesrc);

/**
 * Load an image from an SDL data source into a GPU texture.
 *
 * An SDL_Texture represents an image in GPU memory, usable by SDL's 2D Render
 * API. This can be significantly more efficient than using a CPU-bound
 * SDL_Surface if you don't need to manipulate the image directly after
 * loading it.
 *
 * If the loaded image has transparency or a colorkey, a texture with an alpha
 * channel will be created. Otherwise, SDL_image will attempt to create an
 * SDL_Texture in the most format that most reasonably represents the image
 * data (but in many cases, this will just end up being 32-bit RGB or 32-bit
 * RGBA).
 *
 * If `freesrc` is non-zero, the RWops will be closed before returning,
 * whether this function succeeds or not. SDL_image reads everything it needs
 * from the RWops during this call in any case.
 *
 * Even though this function accepts a file type, SDL_image may still try
 * other decoders that are capable of detecting file type from the contents of
 * the image data, but may rely on the caller-provided type string for formats
 * that it cannot autodetect. If `type` is NULL, SDL_image will rely solely on
 * its ability to guess the format.
 *
 * There is a separate function to read files from disk without having to deal
 * with SDL_RWops: `IMG_LoadTexture("filename.jpg")` will call this function
 * and manage those details for you, determining the file type from the
 * filename's extension.
 *
 * There is also IMG_LoadTexture_RW(), which is equivalent to this function
 * except that it will rely on SDL_image to determine what type of data it is
 * loading, much like passing a NULL for type.
 *
 * If you would rather decode an image to an SDL_Surface (a buffer of pixels
 * in CPU memory), call IMG_LoadTyped_RW() instead.
 *
 * When done with the returned texture, the app should dispose of it with a
 * call to SDL_DestroyTexture().
 *
 * \param renderer the SDL_Renderer to use to create the GPU texture.
 * \param src an SDL_RWops that data will be read from.
 * \param freesrc non-zero to close/free the SDL_RWops before returning, zero
 *                to leave it open.
 * \param type a filename extension that represent this data ("BMP", "GIF",
 *             "PNG", etc).
 * \returns a new texture, or NULL on error.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadTexture
 * \sa IMG_LoadTexture_RW
 * \sa SDL_DestroyTexture
 */
extern DECLSPEC SDL_Texture * SDLCALL IMG_LoadTextureTyped_RW(SDL_Renderer *renderer, SDL_RWops *src, int freesrc, const char *type);
#endif /* SDL 2.0 */

/**
 * Detect AVIF image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is AVIF data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.6.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isAVIF(SDL_RWops *src);

/**
 * Detect ICO image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is ICO data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isICO(SDL_RWops *src);

/**
 * Detect CUR image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is CUR data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isCUR(SDL_RWops *src);

/**
 * Detect BMP image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is BMP data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isBMP(SDL_RWops *src);

/**
 * Detect GIF image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is GIF data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isGIF(SDL_RWops *src);

/**
 * Detect JPG image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is JPG data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isJPG(SDL_RWops *src);

/**
 * Detect JXL image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is JXL data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.6.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isJXL(SDL_RWops *src);

/**
 * Detect LBM image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is LBM data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isLBM(SDL_RWops *src);

/**
 * Detect PCX image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is PCX data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isPCX(SDL_RWops *src);

/**
 * Detect PNG image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is PNG data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isPNG(SDL_RWops *src);

/**
 * Detect PNM image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is PNM data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isPNM(SDL_RWops *src);

/**
 * Detect SVG image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is SVG data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.2.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isSVG(SDL_RWops *src);

/**
 * Detect QOI image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is QOI data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.6.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isQOI(SDL_RWops *src);

/**
 * Detect TIFF image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is TIFF data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isTIF(SDL_RWops *src);

/**
 * Detect XCF image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is XCF data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isXCF(SDL_RWops *src);

/**
 * Detect XPM image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is XPM data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXV
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isXPM(SDL_RWops *src);

/**
 * Detect XV image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is XV data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isWEBP
 */
extern DECLSPEC int SDLCALL IMG_isXV(SDL_RWops *src);

/**
 * Detect WEBP image data on a readable/seekable SDL_RWops.
 *
 * This function attempts to determine if a file is a given filetype, reading
 * the least amount possible from the SDL_RWops (usually a few bytes).
 *
 * There is no distinction made between "not the filetype in question" and
 * basic i/o errors.
 *
 * This function will always attempt to seek the RWops back to where it
 * started when this function was called, but it will not report any errors in
 * doing so, but assuming seeking works, this means you can immediately use
 * this with a different IMG_isTYPE function, or load the image without
 * further seeking.
 *
 * You do not need to call this function to load data; SDL_image can work to
 * determine file type in many cases in its standard load functions.
 *
 * \param src a seekable/readable SDL_RWops to provide image data.
 * \returns non-zero if this is WEBP data, zero otherwise.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_isAVIF
 * \sa IMG_isICO
 * \sa IMG_isCUR
 * \sa IMG_isBMP
 * \sa IMG_isGIF
 * \sa IMG_isJPG
 * \sa IMG_isJXL
 * \sa IMG_isLBM
 * \sa IMG_isPCX
 * \sa IMG_isPNG
 * \sa IMG_isPNM
 * \sa IMG_isSVG
 * \sa IMG_isQOI
 * \sa IMG_isTIF
 * \sa IMG_isXCF
 * \sa IMG_isXPM
 * \sa IMG_isXV
 */
extern DECLSPEC int SDLCALL IMG_isWEBP(SDL_RWops *src);

/**
 * Load a AVIF image directly.
 *
 * If you know you definitely have a AVIF image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.6.0.
 *
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadAVIF_RW(SDL_RWops *src);

/**
 * Load a ICO image directly.
 *
 * If you know you definitely have a ICO image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadICO_RW(SDL_RWops *src);

/**
 * Load a CUR image directly.
 *
 * If you know you definitely have a CUR image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadCUR_RW(SDL_RWops *src);

/**
 * Load a BMP image directly.
 *
 * If you know you definitely have a BMP image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadBMP_RW(SDL_RWops *src);

/**
 * Load a GIF image directly.
 *
 * If you know you definitely have a GIF image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadGIF_RW(SDL_RWops *src);

/**
 * Load a JPG image directly.
 *
 * If you know you definitely have a JPG image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadJPG_RW(SDL_RWops *src);

/**
 * Load a JXL image directly.
 *
 * If you know you definitely have a JXL image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.6.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadJXL_RW(SDL_RWops *src);

/**
 * Load a LBM image directly.
 *
 * If you know you definitely have a LBM image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadLBM_RW(SDL_RWops *src);

/**
 * Load a PCX image directly.
 *
 * If you know you definitely have a PCX image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadPCX_RW(SDL_RWops *src);

/**
 * Load a PNG image directly.
 *
 * If you know you definitely have a PNG image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadPNG_RW(SDL_RWops *src);

/**
 * Load a PNM image directly.
 *
 * If you know you definitely have a PNM image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadPNM_RW(SDL_RWops *src);

/**
 * Load a SVG image directly.
 *
 * If you know you definitely have a SVG image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.2.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadSVG_RW(SDL_RWops *src);

/**
 * Load a QOI image directly.
 *
 * If you know you definitely have a QOI image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.6.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadQOI_RW(SDL_RWops *src);

/**
 * Load a TGA image directly.
 *
 * If you know you definitely have a TGA image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadTGA_RW(SDL_RWops *src);

/**
 * Load a TIFF image directly.
 *
 * If you know you definitely have a TIFF image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadTIF_RW(SDL_RWops *src);

/**
 * Load a XCF image directly.
 *
 * If you know you definitely have a XCF image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadXCF_RW(SDL_RWops *src);

/**
 * Load a XPM image directly.
 *
 * If you know you definitely have a XPM image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXV_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadXPM_RW(SDL_RWops *src);

/**
 * Load a XV image directly.
 *
 * If you know you definitely have a XV image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadWEBP_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadXV_RW(SDL_RWops *src);

/**
 * Load a WEBP image directly.
 *
 * If you know you definitely have a WEBP image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops to load image data from.
 * \returns SDL surface, or NULL on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_LoadAVIF_RW
 * \sa IMG_LoadICO_RW
 * \sa IMG_LoadCUR_RW
 * \sa IMG_LoadBMP_RW
 * \sa IMG_LoadGIF_RW
 * \sa IMG_LoadJPG_RW
 * \sa IMG_LoadJXL_RW
 * \sa IMG_LoadLBM_RW
 * \sa IMG_LoadPCX_RW
 * \sa IMG_LoadPNG_RW
 * \sa IMG_LoadPNM_RW
 * \sa IMG_LoadSVG_RW
 * \sa IMG_LoadQOI_RW
 * \sa IMG_LoadTGA_RW
 * \sa IMG_LoadTIF_RW
 * \sa IMG_LoadXCF_RW
 * \sa IMG_LoadXPM_RW
 * \sa IMG_LoadXV_RW
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadWEBP_RW(SDL_RWops *src);

/**
 * Load an SVG image, scaled to a specific size.
 *
 * Since SVG files are resolution-independent, you specify the size you would
 * like the output image to be and it will be generated at those dimensions.
 *
 * Either width or height may be 0 and the image will be auto-sized to
 * preserve aspect ratio.
 *
 * When done with the returned surface, the app should dispose of it with a
 * call to SDL_FreeSurface().
 *
 * \param src an SDL_RWops to load SVG data from.
 * \param width desired width of the generated surface, in pixels.
 * \param height desired height of the generated surface, in pixels.
 * \returns a new SDL surface, or NULL on error.
 *
 * \since This function is available since SDL_image 2.6.0.
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadSizedSVG_RW(SDL_RWops *src, int width, int height);

/**
 * Load an XPM image from a memory array.
 *
 * The returned surface will be an 8bpp indexed surface, if possible,
 * otherwise it will be 32bpp. If you always want 32-bit data, use
 * IMG_ReadXPMFromArrayToRGB888() instead.
 *
 * When done with the returned surface, the app should dispose of it with a
 * call to SDL_FreeSurface().
 *
 * \param xpm a null-terminated array of strings that comprise XPM data.
 * \returns a new SDL surface, or NULL on error.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_ReadXPMFromArrayToRGB888
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_ReadXPMFromArray(char **xpm);

/**
 * Load an XPM image from a memory array.
 *
 * The returned surface will always be a 32-bit RGB surface. If you want 8-bit
 * indexed colors (and the XPM data allows it), use IMG_ReadXPMFromArray()
 * instead.
 *
 * When done with the returned surface, the app should dispose of it with a
 * call to SDL_FreeSurface().
 *
 * \param xpm a null-terminated array of strings that comprise XPM data.
 * \returns a new SDL surface, or NULL on error.
 *
 * \since This function is available since SDL_image 2.6.0.
 *
 * \sa IMG_ReadXPMFromArray
 */
extern DECLSPEC SDL_Surface * SDLCALL IMG_ReadXPMFromArrayToRGB888(char **xpm);

/**
 * Save an SDL_Surface into a PNG image file.
 *
 * If the file already exists, it will be overwritten.
 *
 * \param surface the SDL surface to save
 * \param file path on the filesystem to write new file to.
 * \returns 0 if successful, -1 on error
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_SavePNG_RW
 * \sa IMG_SaveJPG
 * \sa IMG_SaveJPG_RW
 */
extern DECLSPEC int SDLCALL IMG_SavePNG(SDL_Surface *surface, const char *file);

/**
 * Save an SDL_Surface into PNG image data, via an SDL_RWops.
 *
 * If you just want to save to a filename, you can use IMG_SavePNG() instead.
 *
 * \param surface the SDL surface to save
 * \param dst the SDL_RWops to save the image data to.
 * \returns 0 if successful, -1 on error.
 *
 * \since This function is available since SDL_image 2.0.0.
 *
 * \sa IMG_SavePNG
 * \sa IMG_SaveJPG
 * \sa IMG_SaveJPG_RW
 */
extern DECLSPEC int SDLCALL IMG_SavePNG_RW(SDL_Surface *surface, SDL_RWops *dst, int freedst);

/**
 * Save an SDL_Surface into a JPEG image file.
 *
 * If the file already exists, it will be overwritten.
 *
 * \param surface the SDL surface to save
 * \param file path on the filesystem to write new file to.
 * \param quality [0; 33] is Lowest quality, [34; 66] is Middle quality, [67;
 *                100] is Highest quality
 * \returns 0 if successful, -1 on error
 *
 * \since This function is available since SDL_image 2.0.2.
 *
 * \sa IMG_SaveJPG_RW
 * \sa IMG_SavePNG
 * \sa IMG_SavePNG_RW
 */
extern DECLSPEC int SDLCALL IMG_SaveJPG(SDL_Surface *surface, const char *file, int quality);

/**
 * Save an SDL_Surface into JPEG image data, via an SDL_RWops.
 *
 * If you just want to save to a filename, you can use IMG_SaveJPG() instead.
 *
 * \param surface the SDL surface to save
 * \param dst the SDL_RWops to save the image data to.
 * \returns 0 if successful, -1 on error.
 *
 * \since This function is available since SDL_image 2.0.2.
 *
 * \sa IMG_SaveJPG
 * \sa IMG_SavePNG
 * \sa IMG_SavePNG_RW
 */
extern DECLSPEC int SDLCALL IMG_SaveJPG_RW(SDL_Surface *surface, SDL_RWops *dst, int freedst, int quality);

/**
 * Animated image support
 * Currently only animated GIFs are supported.
 */
typedef struct
{
	int w, h;
	int count;
	SDL_Surface **frames;
	int *delays;
} IMG_Animation;

/**
 * Load an animation from a file.
 *
 * When done with the returned animation, the app should dispose of it with a
 * call to IMG_FreeAnimation().
 *
 * \param file path on the filesystem containing an animated image.
 * \returns a new IMG_Animation, or NULL on error.
 *
 * \since This function is available since SDL_image 2.6.0.
 *
 * \sa IMG_FreeAnimation
 */
extern DECLSPEC IMG_Animation * SDLCALL IMG_LoadAnimation(const char *file);

/**
 * Load an animation from an SDL_RWops.
 *
 * If `freesrc` is non-zero, the RWops will be closed before returning,
 * whether this function succeeds or not. SDL_image reads everything it needs
 * from the RWops during this call in any case.
 *
 * When done with the returned animation, the app should dispose of it with a
 * call to IMG_FreeAnimation().
 *
 * \param src an SDL_RWops that data will be read from.
 * \param freesrc non-zero to close/free the SDL_RWops before returning, zero
 *                to leave it open.
 * \returns a new IMG_Animation, or NULL on error.
 *
 * \since This function is available since SDL_image 2.6.0.
 *
 * \sa IMG_FreeAnimation
 */
extern DECLSPEC IMG_Animation * SDLCALL IMG_LoadAnimation_RW(SDL_RWops *src, int freesrc);

/**
 * Load an animation from an SDL datasource
 *
 * Even though this function accepts a file type, SDL_image may still try
 * other decoders that are capable of detecting file type from the contents of
 * the image data, but may rely on the caller-provided type string for formats
 * that it cannot autodetect. If `type` is NULL, SDL_image will rely solely on
 * its ability to guess the format.
 *
 * If `freesrc` is non-zero, the RWops will be closed before returning,
 * whether this function succeeds or not. SDL_image reads everything it needs
 * from the RWops during this call in any case.
 *
 * When done with the returned animation, the app should dispose of it with a
 * call to IMG_FreeAnimation().
 *
 * \param src an SDL_RWops that data will be read from.
 * \param freesrc non-zero to close/free the SDL_RWops before returning, zero
 *                to leave it open.
 * \param type a filename extension that represent this data ("GIF", etc).
 * \returns a new IMG_Animation, or NULL on error.
 *
 * \since This function is available since SDL_image 2.6.0.
 *
 * \sa IMG_LoadAnimation
 * \sa IMG_LoadAnimation_RW
 * \sa IMG_FreeAnimation
 */
extern DECLSPEC IMG_Animation * SDLCALL IMG_LoadAnimationTyped_RW(SDL_RWops *src, int freesrc, const char *type);

/**
 * Dispose of an IMG_Animation and free its resources.
 *
 * The provided `anim` pointer is not valid once this call returns.
 *
 * \param anim IMG_Animation to dispose of.
 *
 * \since This function is available since SDL_image 2.6.0.
 *
 * \sa IMG_LoadAnimation
 * \sa IMG_LoadAnimation_RW
 * \sa IMG_LoadAnimationTyped_RW
 */
extern DECLSPEC void SDLCALL IMG_FreeAnimation(IMG_Animation *anim);

/**
 * Load a GIF animation directly.
 *
 * If you know you definitely have a GIF image, you can call this function,
 * which will skip SDL_image's file format detection routines. Generally it's
 * better to use the abstract interfaces; also, there is only an SDL_RWops
 * interface available here.
 *
 * \param src an SDL_RWops that data will be read from.
 * \returns a new IMG_Animation, or NULL on error.
 *
 * \since This function is available since SDL_image 2.6.0.
 *
 * \sa IMG_LoadAnimation
 * \sa IMG_LoadAnimation_RW
 * \sa IMG_LoadAnimationTyped_RW
 * \sa IMG_FreeAnimation
 */
extern DECLSPEC IMG_Animation * SDLCALL IMG_LoadGIFAnimation_RW(SDL_RWops *src);

/**
 * Report SDL_image errors
 *
 * \sa IMG_GetError
 */
#define IMG_SetError    SDL_SetError

/**
 * Get last SDL_image error
 *
 * \sa IMG_SetError
 */
#define IMG_GetError    SDL_GetError

/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"

#endif /* SDL_IMAGE_H_ */