From 8222bfe56d4dabe8d92fc4b25ea1b0163b16f3e1 Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 4 May 2024 16:51:29 -0700 Subject: Initial commit. --- src/contrib/SDL-2.30.2/include/SDL_rwops.h | 841 +++++++++++++++++++++++++++++ 1 file changed, 841 insertions(+) create mode 100644 src/contrib/SDL-2.30.2/include/SDL_rwops.h (limited to 'src/contrib/SDL-2.30.2/include/SDL_rwops.h') diff --git a/src/contrib/SDL-2.30.2/include/SDL_rwops.h b/src/contrib/SDL-2.30.2/include/SDL_rwops.h new file mode 100644 index 0000000..9dd99f9 --- /dev/null +++ b/src/contrib/SDL-2.30.2/include/SDL_rwops.h @@ -0,0 +1,841 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2024 Sam Lantinga + + 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_rwops.h + * + * This file provides a general interface for SDL to read and write + * data streams. It can easily be extended to files, memory, etc. + */ + +#ifndef SDL_rwops_h_ +#define SDL_rwops_h_ + +#include "SDL_stdinc.h" +#include "SDL_error.h" + +#include "begin_code.h" +/* Set up for C function definitions, even when using C++ */ +#ifdef __cplusplus +extern "C" { +#endif + +/* RWops Types */ +#define SDL_RWOPS_UNKNOWN 0U /**< Unknown stream type */ +#define SDL_RWOPS_WINFILE 1U /**< Win32 file */ +#define SDL_RWOPS_STDFILE 2U /**< Stdio file */ +#define SDL_RWOPS_JNIFILE 3U /**< Android asset */ +#define SDL_RWOPS_MEMORY 4U /**< Memory stream */ +#define SDL_RWOPS_MEMORY_RO 5U /**< Read-Only memory stream */ + +/** + * This is the read/write operation structure -- very basic. + */ +typedef struct SDL_RWops +{ + /** + * Return the size of the file in this rwops, or -1 if unknown + */ + Sint64 (SDLCALL * size) (struct SDL_RWops * context); + + /** + * Seek to \c offset relative to \c whence, one of stdio's whence values: + * RW_SEEK_SET, RW_SEEK_CUR, RW_SEEK_END + * + * \return the final offset in the data stream, or -1 on error. + */ + Sint64 (SDLCALL * seek) (struct SDL_RWops * context, Sint64 offset, + int whence); + + /** + * Read up to \c maxnum objects each of size \c size from the data + * stream to the area pointed at by \c ptr. + * + * \return the number of objects read, or 0 at error or end of file. + */ + size_t (SDLCALL * read) (struct SDL_RWops * context, void *ptr, + size_t size, size_t maxnum); + + /** + * Write exactly \c num objects each of size \c size from the area + * pointed at by \c ptr to data stream. + * + * \return the number of objects written, or 0 at error or end of file. + */ + size_t (SDLCALL * write) (struct SDL_RWops * context, const void *ptr, + size_t size, size_t num); + + /** + * Close and free an allocated SDL_RWops structure. + * + * \return 0 if successful or -1 on write error when flushing data. + */ + int (SDLCALL * close) (struct SDL_RWops * context); + + Uint32 type; + union + { +#if defined(__ANDROID__) + struct + { + void *asset; + } androidio; +#elif defined(__WIN32__) || defined(__GDK__) + struct + { + SDL_bool append; + void *h; + struct + { + void *data; + size_t size; + size_t left; + } buffer; + } windowsio; +#endif + +#ifdef HAVE_STDIO_H + struct + { + SDL_bool autoclose; + FILE *fp; + } stdio; +#endif + struct + { + Uint8 *base; + Uint8 *here; + Uint8 *stop; + } mem; + struct + { + void *data1; + void *data2; + } unknown; + } hidden; + +} SDL_RWops; + + +/** + * \name RWFrom functions + * + * Functions to create SDL_RWops structures from various data streams. + */ +/* @{ */ + +/** + * Use this function to create a new SDL_RWops structure for reading from + * and/or writing to a named file. + * + * The `mode` string is treated roughly the same as in a call to the C + * library's fopen(), even if SDL doesn't happen to use fopen() behind the + * scenes. + * + * Available `mode` strings: + * + * - "r": Open a file for reading. The file must exist. + * - "w": Create an empty file for writing. If a file with the same name + * already exists its content is erased and the file is treated as a new + * empty file. + * - "a": Append to a file. Writing operations append data at the end of the + * file. The file is created if it does not exist. + * - "r+": Open a file for update both reading and writing. The file must + * exist. + * - "w+": Create an empty file for both reading and writing. If a file with + * the same name already exists its content is erased and the file is + * treated as a new empty file. + * - "a+": Open a file for reading and appending. All writing operations are + * performed at the end of the file, protecting the previous content to be + * overwritten. You can reposition (fseek, rewind) the internal pointer to + * anywhere in the file for reading, but writing operations will move it + * back to the end of file. The file is created if it does not exist. + * + * **NOTE**: In order to open a file as a binary file, a "b" character has to + * be included in the `mode` string. This additional "b" character can either + * be appended at the end of the string (thus making the following compound + * modes: "rb", "wb", "ab", "r+b", "w+b", "a+b") or be inserted between the + * letter and the "+" sign for the mixed modes ("rb+", "wb+", "ab+"). + * Additional characters may follow the sequence, although they should have no + * effect. For example, "t" is sometimes appended to make explicit the file is + * a text file. + * + * This function supports Unicode filenames, but they must be encoded in UTF-8 + * format, regardless of the underlying operating system. + * + * As a fallback, SDL_RWFromFile() will transparently open a matching filename + * in an Android app's `assets`. + * + * Closing the SDL_RWops will close the file handle SDL is holding internally. + * + * \param file a UTF-8 string representing the filename to open + * \param mode an ASCII string representing the mode to be used for opening + * the file. + * \returns a pointer to the SDL_RWops structure that is created, or NULL on + * failure; call SDL_GetError() for more information. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_RWclose + * \sa SDL_RWFromConstMem + * \sa SDL_RWFromFP + * \sa SDL_RWFromMem + * \sa SDL_RWread + * \sa SDL_RWseek + * \sa SDL_RWtell + * \sa SDL_RWwrite + */ +extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromFile(const char *file, + const char *mode); + +#ifdef HAVE_STDIO_H + +extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromFP(FILE * fp, SDL_bool autoclose); + +#else + +/** + * Use this function to create an SDL_RWops structure from a standard I/O file + * pointer (stdio.h's `FILE*`). + * + * This function is not available on Windows, since files opened in an + * application on that platform cannot be used by a dynamically linked + * library. + * + * On some platforms, the first parameter is a `void*`, on others, it's a + * `FILE*`, depending on what system headers are available to SDL. It is + * always intended to be the `FILE*` type from the C runtime's stdio.h. + * + * \param fp the `FILE*` that feeds the SDL_RWops stream + * \param autoclose SDL_TRUE to close the `FILE*` when closing the SDL_RWops, + * SDL_FALSE to leave the `FILE*` open when the RWops is + * closed + * \returns a pointer to the SDL_RWops structure that is created, or NULL on + * failure; call SDL_GetError() for more information. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_RWclose + * \sa SDL_RWFromConstMem + * \sa SDL_RWFromFile + * \sa SDL_RWFromMem + * \sa SDL_RWread + * \sa SDL_RWseek + * \sa SDL_RWtell + * \sa SDL_RWwrite + */ +extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromFP(void * fp, + SDL_bool autoclose); +#endif + +/** + * Use this function to prepare a read-write memory buffer for use with + * SDL_RWops. + * + * This function sets up an SDL_RWops struct based on a memory area of a + * certain size, for both read and write access. + * + * This memory buffer is not copied by the RWops; the pointer you provide must + * remain valid until you close the stream. Closing the stream will not free + * the original buffer. + * + * If you need to make sure the RWops never writes to the memory buffer, you + * should use SDL_RWFromConstMem() with a read-only buffer of memory instead. + * + * \param mem a pointer to a buffer to feed an SDL_RWops stream + * \param size the buffer size, in bytes + * \returns a pointer to a new SDL_RWops structure, or NULL if it fails; call + * SDL_GetError() for more information. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_RWclose + * \sa SDL_RWFromConstMem + * \sa SDL_RWFromFile + * \sa SDL_RWFromFP + * \sa SDL_RWFromMem + * \sa SDL_RWread + * \sa SDL_RWseek + * \sa SDL_RWtell + * \sa SDL_RWwrite + */ +extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromMem(void *mem, int size); + +/** + * Use this function to prepare a read-only memory buffer for use with RWops. + * + * This function sets up an SDL_RWops struct based on a memory area of a + * certain size. It assumes the memory area is not writable. + * + * Attempting to write to this RWops stream will report an error without + * writing to the memory buffer. + * + * This memory buffer is not copied by the RWops; the pointer you provide must + * remain valid until you close the stream. Closing the stream will not free + * the original buffer. + * + * If you need to write to a memory buffer, you should use SDL_RWFromMem() + * with a writable buffer of memory instead. + * + * \param mem a pointer to a read-only buffer to feed an SDL_RWops stream + * \param size the buffer size, in bytes + * \returns a pointer to a new SDL_RWops structure, or NULL if it fails; call + * SDL_GetError() for more information. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_RWclose + * \sa SDL_RWFromConstMem + * \sa SDL_RWFromFile + * \sa SDL_RWFromFP + * \sa SDL_RWFromMem + * \sa SDL_RWread + * \sa SDL_RWseek + * \sa SDL_RWtell + */ +extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromConstMem(const void *mem, + int size); + +/* @} *//* RWFrom functions */ + + +/** + * Use this function to allocate an empty, unpopulated SDL_RWops structure. + * + * Applications do not need to use this function unless they are providing + * their own SDL_RWops implementation. If you just need a SDL_RWops to + * read/write a common data source, you should use the built-in + * implementations in SDL, like SDL_RWFromFile() or SDL_RWFromMem(), etc. + * + * You must free the returned pointer with SDL_FreeRW(). Depending on your + * operating system and compiler, there may be a difference between the + * malloc() and free() your program uses and the versions SDL calls + * internally. Trying to mix the two can cause crashing such as segmentation + * faults. Since all SDL_RWops must free themselves when their **close** + * method is called, all SDL_RWops must be allocated through this function, so + * they can all be freed correctly with SDL_FreeRW(). + * + * \returns a pointer to the allocated memory on success, or NULL on failure; + * call SDL_GetError() for more information. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_FreeRW + */ +extern DECLSPEC SDL_RWops *SDLCALL SDL_AllocRW(void); + +/** + * Use this function to free an SDL_RWops structure allocated by + * SDL_AllocRW(). + * + * Applications do not need to use this function unless they are providing + * their own SDL_RWops implementation. If you just need a SDL_RWops to + * read/write a common data source, you should use the built-in + * implementations in SDL, like SDL_RWFromFile() or SDL_RWFromMem(), etc, and + * call the **close** method on those SDL_RWops pointers when you are done + * with them. + * + * Only use SDL_FreeRW() on pointers returned by SDL_AllocRW(). The pointer is + * invalid as soon as this function returns. Any extra memory allocated during + * creation of the SDL_RWops is not freed by SDL_FreeRW(); the programmer must + * be responsible for managing that memory in their **close** method. + * + * \param area the SDL_RWops structure to be freed + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_AllocRW + */ +extern DECLSPEC void SDLCALL SDL_FreeRW(SDL_RWops * area); + +#define RW_SEEK_SET 0 /**< Seek from the beginning of data */ +#define RW_SEEK_CUR 1 /**< Seek relative to current read point */ +#define RW_SEEK_END 2 /**< Seek relative to the end of data */ + +/** + * Use this function to get the size of the data stream in an SDL_RWops. + * + * Prior to SDL 2.0.10, this function was a macro. + * + * \param context the SDL_RWops to get the size of the data stream from + * \returns the size of the data stream in the SDL_RWops on success, -1 if + * unknown or a negative error code on failure; call SDL_GetError() + * for more information. + * + * \since This function is available since SDL 2.0.10. + */ +extern DECLSPEC Sint64 SDLCALL SDL_RWsize(SDL_RWops *context); + +/** + * Seek within an SDL_RWops data stream. + * + * This function seeks to byte `offset`, relative to `whence`. + * + * `whence` may be any of the following values: + * + * - `RW_SEEK_SET`: seek from the beginning of data + * - `RW_SEEK_CUR`: seek relative to current read point + * - `RW_SEEK_END`: seek relative to the end of data + * + * If this stream can not seek, it will return -1. + * + * SDL_RWseek() is actually a wrapper function that calls the SDL_RWops's + * `seek` method appropriately, to simplify application development. + * + * Prior to SDL 2.0.10, this function was a macro. + * + * \param context a pointer to an SDL_RWops structure + * \param offset an offset in bytes, relative to **whence** location; can be + * negative + * \param whence any of `RW_SEEK_SET`, `RW_SEEK_CUR`, `RW_SEEK_END` + * \returns the final offset in the data stream after the seek or -1 on error. + * + * \since This function is available since SDL 2.0.10. + * + * \sa SDL_RWclose + * \sa SDL_RWFromConstMem + * \sa SDL_RWFromFile + * \sa SDL_RWFromFP + * \sa SDL_RWFromMem + * \sa SDL_RWread + * \sa SDL_RWtell + * \sa SDL_RWwrite + */ +extern DECLSPEC Sint64 SDLCALL SDL_RWseek(SDL_RWops *context, + Sint64 offset, int whence); + +/** + * Determine the current read/write offset in an SDL_RWops data stream. + * + * SDL_RWtell is actually a wrapper function that calls the SDL_RWops's `seek` + * method, with an offset of 0 bytes from `RW_SEEK_CUR`, to simplify + * application development. + * + * Prior to SDL 2.0.10, this function was a macro. + * + * \param context a SDL_RWops data stream object from which to get the current + * offset + * \returns the current offset in the stream, or -1 if the information can not + * be determined. + * + * \since This function is available since SDL 2.0.10. + * + * \sa SDL_RWclose + * \sa SDL_RWFromConstMem + * \sa SDL_RWFromFile + * \sa SDL_RWFromFP + * \sa SDL_RWFromMem + * \sa SDL_RWread + * \sa SDL_RWseek + * \sa SDL_RWwrite + */ +extern DECLSPEC Sint64 SDLCALL SDL_RWtell(SDL_RWops *context); + +/** + * Read from a data source. + * + * This function reads up to `maxnum` objects each of size `size` from the + * data source to the area pointed at by `ptr`. This function may read less + * objects than requested. It will return zero when there has been an error or + * the data stream is completely read. + * + * SDL_RWread() is actually a function wrapper that calls the SDL_RWops's + * `read` method appropriately, to simplify application development. + * + * Prior to SDL 2.0.10, this function was a macro. + * + * \param context a pointer to an SDL_RWops structure + * \param ptr a pointer to a buffer to read data into + * \param size the size of each object to read, in bytes + * \param maxnum the maximum number of objects to be read + * \returns the number of objects read, or 0 at error or end of file; call + * SDL_GetError() for more information. + * + * \since This function is available since SDL 2.0.10. + * + * \sa SDL_RWclose + * \sa SDL_RWFromConstMem + * \sa SDL_RWFromFile + * \sa SDL_RWFromFP + * \sa SDL_RWFromMem + * \sa SDL_RWseek + * \sa SDL_RWwrite + */ +extern DECLSPEC size_t SDLCALL SDL_RWread(SDL_RWops *context, + void *ptr, size_t size, + size_t maxnum); + +/** + * Write to an SDL_RWops data stream. + * + * This function writes exactly `num` objects each of size `size` from the + * area pointed at by `ptr` to the stream. If this fails for any reason, it'll + * return less than `num` to demonstrate how far the write progressed. On + * success, it returns `num`. + * + * SDL_RWwrite is actually a function wrapper that calls the SDL_RWops's + * `write` method appropriately, to simplify application development. + * + * Prior to SDL 2.0.10, this function was a macro. + * + * \param context a pointer to an SDL_RWops structure + * \param ptr a pointer to a buffer containing data to write + * \param size the size of an object to write, in bytes + * \param num the number of objects to write + * \returns the number of objects written, which will be less than **num** on + * error; call SDL_GetError() for more information. + * + * \since This function is available since SDL 2.0.10. + * + * \sa SDL_RWclose + * \sa SDL_RWFromConstMem + * \sa SDL_RWFromFile + * \sa SDL_RWFromFP + * \sa SDL_RWFromMem + * \sa SDL_RWread + * \sa SDL_RWseek + */ +extern DECLSPEC size_t SDLCALL SDL_RWwrite(SDL_RWops *context, + const void *ptr, size_t size, + size_t num); + +/** + * Close and free an allocated SDL_RWops structure. + * + * SDL_RWclose() closes and cleans up the SDL_RWops stream. It releases any + * resources used by the stream and frees the SDL_RWops itself with + * SDL_FreeRW(). This returns 0 on success, or -1 if the stream failed to + * flush to its output (e.g. to disk). + * + * Note that if this fails to flush the stream to disk, this function reports + * an error, but the SDL_RWops is still invalid once this function returns. + * + * Prior to SDL 2.0.10, this function was a macro. + * + * \param context SDL_RWops structure to close + * \returns 0 on success or a negative error code on failure; call + * SDL_GetError() for more information. + * + * \since This function is available since SDL 2.0.10. + * + * \sa SDL_RWFromConstMem + * \sa SDL_RWFromFile + * \sa SDL_RWFromFP + * \sa SDL_RWFromMem + * \sa SDL_RWread + * \sa SDL_RWseek + * \sa SDL_RWwrite + */ +extern DECLSPEC int SDLCALL SDL_RWclose(SDL_RWops *context); + +/** + * Load all the data from an SDL data stream. + * + * The data is allocated with a zero byte at the end (null terminated) for + * convenience. This extra byte is not included in the value reported via + * `datasize`. + * + * The data should be freed with SDL_free(). + * + * \param src the SDL_RWops to read all available data from + * \param datasize if not NULL, will store the number of bytes read + * \param freesrc if non-zero, calls SDL_RWclose() on `src` before returning + * \returns the data, or NULL if there was an error. + * + * \since This function is available since SDL 2.0.6. + */ +extern DECLSPEC void *SDLCALL SDL_LoadFile_RW(SDL_RWops *src, + size_t *datasize, + int freesrc); + +/** + * Load all the data from a file path. + * + * The data is allocated with a zero byte at the end (null terminated) for + * convenience. This extra byte is not included in the value reported via + * `datasize`. + * + * The data should be freed with SDL_free(). + * + * Prior to SDL 2.0.10, this function was a macro wrapping around + * SDL_LoadFile_RW. + * + * \param file the path to read all available data from + * \param datasize if not NULL, will store the number of bytes read + * \returns the data, or NULL if there was an error. + * + * \since This function is available since SDL 2.0.10. + */ +extern DECLSPEC void *SDLCALL SDL_LoadFile(const char *file, size_t *datasize); + +/** + * \name Read endian functions + * + * Read an item of the specified endianness and return in native format. + */ +/* @{ */ + +/** + * Use this function to read a byte from an SDL_RWops. + * + * \param src the SDL_RWops to read from + * \returns the read byte on success or 0 on failure; call SDL_GetError() for + * more information. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_WriteU8 + */ +extern DECLSPEC Uint8 SDLCALL SDL_ReadU8(SDL_RWops * src); + +/** + * Use this function to read 16 bits of little-endian data from an SDL_RWops + * and return in native format. + * + * SDL byteswaps the data only if necessary, so the data returned will be in + * the native byte order. + * + * \param src the stream from which to read data + * \returns 16 bits of data in the native byte order of the platform. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_ReadBE16 + */ +extern DECLSPEC Uint16 SDLCALL SDL_ReadLE16(SDL_RWops * src); + +/** + * Use this function to read 16 bits of big-endian data from an SDL_RWops and + * return in native format. + * + * SDL byteswaps the data only if necessary, so the data returned will be in + * the native byte order. + * + * \param src the stream from which to read data + * \returns 16 bits of data in the native byte order of the platform. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_ReadLE16 + */ +extern DECLSPEC Uint16 SDLCALL SDL_ReadBE16(SDL_RWops * src); + +/** + * Use this function to read 32 bits of little-endian data from an SDL_RWops + * and return in native format. + * + * SDL byteswaps the data only if necessary, so the data returned will be in + * the native byte order. + * + * \param src the stream from which to read data + * \returns 32 bits of data in the native byte order of the platform. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_ReadBE32 + */ +extern DECLSPEC Uint32 SDLCALL SDL_ReadLE32(SDL_RWops * src); + +/** + * Use this function to read 32 bits of big-endian data from an SDL_RWops and + * return in native format. + * + * SDL byteswaps the data only if necessary, so the data returned will be in + * the native byte order. + * + * \param src the stream from which to read data + * \returns 32 bits of data in the native byte order of the platform. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_ReadLE32 + */ +extern DECLSPEC Uint32 SDLCALL SDL_ReadBE32(SDL_RWops * src); + +/** + * Use this function to read 64 bits of little-endian data from an SDL_RWops + * and return in native format. + * + * SDL byteswaps the data only if necessary, so the data returned will be in + * the native byte order. + * + * \param src the stream from which to read data + * \returns 64 bits of data in the native byte order of the platform. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_ReadBE64 + */ +extern DECLSPEC Uint64 SDLCALL SDL_ReadLE64(SDL_RWops * src); + +/** + * Use this function to read 64 bits of big-endian data from an SDL_RWops and + * return in native format. + * + * SDL byteswaps the data only if necessary, so the data returned will be in + * the native byte order. + * + * \param src the stream from which to read data + * \returns 64 bits of data in the native byte order of the platform. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_ReadLE64 + */ +extern DECLSPEC Uint64 SDLCALL SDL_ReadBE64(SDL_RWops * src); +/* @} *//* Read endian functions */ + +/** + * \name Write endian functions + * + * Write an item of native format to the specified endianness. + */ +/* @{ */ + +/** + * Use this function to write a byte to an SDL_RWops. + * + * \param dst the SDL_RWops to write to + * \param value the byte value to write + * \returns 1 on success or 0 on failure; call SDL_GetError() for more + * information. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_ReadU8 + */ +extern DECLSPEC size_t SDLCALL SDL_WriteU8(SDL_RWops * dst, Uint8 value); + +/** + * Use this function to write 16 bits in native format to a SDL_RWops as + * little-endian data. + * + * SDL byteswaps the data only if necessary, so the application always + * specifies native format, and the data written will be in little-endian + * format. + * + * \param dst the stream to which data will be written + * \param value the data to be written, in native format + * \returns 1 on successful write, 0 on error. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_WriteBE16 + */ +extern DECLSPEC size_t SDLCALL SDL_WriteLE16(SDL_RWops * dst, Uint16 value); + +/** + * Use this function to write 16 bits in native format to a SDL_RWops as + * big-endian data. + * + * SDL byteswaps the data only if necessary, so the application always + * specifies native format, and the data written will be in big-endian format. + * + * \param dst the stream to which data will be written + * \param value the data to be written, in native format + * \returns 1 on successful write, 0 on error. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_WriteLE16 + */ +extern DECLSPEC size_t SDLCALL SDL_WriteBE16(SDL_RWops * dst, Uint16 value); + +/** + * Use this function to write 32 bits in native format to a SDL_RWops as + * little-endian data. + * + * SDL byteswaps the data only if necessary, so the application always + * specifies native format, and the data written will be in little-endian + * format. + * + * \param dst the stream to which data will be written + * \param value the data to be written, in native format + * \returns 1 on successful write, 0 on error. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_WriteBE32 + */ +extern DECLSPEC size_t SDLCALL SDL_WriteLE32(SDL_RWops * dst, Uint32 value); + +/** + * Use this function to write 32 bits in native format to a SDL_RWops as + * big-endian data. + * + * SDL byteswaps the data only if necessary, so the application always + * specifies native format, and the data written will be in big-endian format. + * + * \param dst the stream to which data will be written + * \param value the data to be written, in native format + * \returns 1 on successful write, 0 on error. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_WriteLE32 + */ +extern DECLSPEC size_t SDLCALL SDL_WriteBE32(SDL_RWops * dst, Uint32 value); + +/** + * Use this function to write 64 bits in native format to a SDL_RWops as + * little-endian data. + * + * SDL byteswaps the data only if necessary, so the application always + * specifies native format, and the data written will be in little-endian + * format. + * + * \param dst the stream to which data will be written + * \param value the data to be written, in native format + * \returns 1 on successful write, 0 on error. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_WriteBE64 + */ +extern DECLSPEC size_t SDLCALL SDL_WriteLE64(SDL_RWops * dst, Uint64 value); + +/** + * Use this function to write 64 bits in native format to a SDL_RWops as + * big-endian data. + * + * SDL byteswaps the data only if necessary, so the application always + * specifies native format, and the data written will be in big-endian format. + * + * \param dst the stream to which data will be written + * \param value the data to be written, in native format + * \returns 1 on successful write, 0 on error. + * + * \since This function is available since SDL 2.0.0. + * + * \sa SDL_WriteLE64 + */ +extern DECLSPEC size_t SDLCALL SDL_WriteBE64(SDL_RWops * dst, Uint64 value); +/* @} *//* Write endian functions */ + +/* Ends C function definitions when using C++ */ +#ifdef __cplusplus +} +#endif +#include "close_code.h" + +#endif /* SDL_rwops_h_ */ + +/* vi: set ts=4 sw=4 expandtab: */ -- cgit v1.2.3