[KMS/DRM] Bugfix for #5489: Non-FULLSCREEN windows incorrecty use videomode changing to look fullscreen.
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
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16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
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25 * This file provides a general interface for SDL to read and write
26 * data streams. It can easily be extended to files, memory, etc.
32 #include "SDL_stdinc.h"
33 #include "SDL_error.h"
35 #include "begin_code.h"
36 /* Set up for C function definitions, even when using C++ */
42 #define SDL_RWOPS_UNKNOWN 0U /**< Unknown stream type */
43 #define SDL_RWOPS_WINFILE 1U /**< Win32 file */
44 #define SDL_RWOPS_STDFILE 2U /**< Stdio file */
45 #define SDL_RWOPS_JNIFILE 3U /**< Android asset */
46 #define SDL_RWOPS_MEMORY 4U /**< Memory stream */
47 #define SDL_RWOPS_MEMORY_RO 5U /**< Read-Only memory stream */
50 * This is the read/write operation structure -- very basic.
52 typedef struct SDL_RWops
55 * Return the size of the file in this rwops, or -1 if unknown
57 Sint64 (SDLCALL * size) (struct SDL_RWops * context);
60 * Seek to \c offset relative to \c whence, one of stdio's whence values:
61 * RW_SEEK_SET, RW_SEEK_CUR, RW_SEEK_END
63 * \return the final offset in the data stream, or -1 on error.
65 Sint64 (SDLCALL * seek) (struct SDL_RWops * context, Sint64 offset,
69 * Read up to \c maxnum objects each of size \c size from the data
70 * stream to the area pointed at by \c ptr.
72 * \return the number of objects read, or 0 at error or end of file.
74 size_t (SDLCALL * read) (struct SDL_RWops * context, void *ptr,
75 size_t size, size_t maxnum);
78 * Write exactly \c num objects each of size \c size from the area
79 * pointed at by \c ptr to data stream.
81 * \return the number of objects written, or 0 at error or end of file.
83 size_t (SDLCALL * write) (struct SDL_RWops * context, const void *ptr,
84 size_t size, size_t num);
87 * Close and free an allocated SDL_RWops structure.
89 * \return 0 if successful or -1 on write error when flushing data.
91 int (SDLCALL * close) (struct SDL_RWops * context);
96 #if defined(__ANDROID__)
101 #elif defined(__WIN32__)
139 * \name RWFrom functions
141 * Functions to create SDL_RWops structures from various data streams.
145 extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromFile(const char *file,
149 extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromFP(FILE * fp,
152 extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromFP(void * fp,
156 extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromMem(void *mem, int size);
157 extern DECLSPEC SDL_RWops *SDLCALL SDL_RWFromConstMem(const void *mem,
160 /* @} *//* RWFrom functions */
163 extern DECLSPEC SDL_RWops *SDLCALL SDL_AllocRW(void);
164 extern DECLSPEC void SDLCALL SDL_FreeRW(SDL_RWops * area);
166 #define RW_SEEK_SET 0 /**< Seek from the beginning of data */
167 #define RW_SEEK_CUR 1 /**< Seek relative to current read point */
168 #define RW_SEEK_END 2 /**< Seek relative to the end of data */
171 * Return the size of the file in this rwops, or -1 if unknown
173 extern DECLSPEC Sint64 SDLCALL SDL_RWsize(SDL_RWops *context);
176 * Seek to \c offset relative to \c whence, one of stdio's whence values:
177 * RW_SEEK_SET, RW_SEEK_CUR, RW_SEEK_END
179 * \return the final offset in the data stream, or -1 on error.
181 extern DECLSPEC Sint64 SDLCALL SDL_RWseek(SDL_RWops *context,
182 Sint64 offset, int whence);
185 * Return the current offset in the data stream, or -1 on error.
187 extern DECLSPEC Sint64 SDLCALL SDL_RWtell(SDL_RWops *context);
190 * Read up to \c maxnum objects each of size \c size from the data
191 * stream to the area pointed at by \c ptr.
193 * \return the number of objects read, or 0 at error or end of file.
195 extern DECLSPEC size_t SDLCALL SDL_RWread(SDL_RWops *context,
196 void *ptr, size_t size, size_t maxnum);
199 * Write exactly \c num objects each of size \c size from the area
200 * pointed at by \c ptr to data stream.
202 * \return the number of objects written, or 0 at error or end of file.
204 extern DECLSPEC size_t SDLCALL SDL_RWwrite(SDL_RWops *context,
205 const void *ptr, size_t size, size_t num);
208 * Close and free an allocated SDL_RWops structure.
210 * \return 0 if successful or -1 on write error when flushing data.
212 extern DECLSPEC int SDLCALL SDL_RWclose(SDL_RWops *context);
215 * Load all the data from an SDL data stream.
217 * The data is allocated with a zero byte at the end (null terminated)
219 * If \c datasize is not NULL, it is filled with the size of the data read.
221 * If \c freesrc is non-zero, the stream will be closed after being read.
223 * The data should be freed with SDL_free().
225 * \return the data, or NULL if there was an error.
227 extern DECLSPEC void *SDLCALL SDL_LoadFile_RW(SDL_RWops * src, size_t *datasize,
231 * Load an entire file.
233 * The data is allocated with a zero byte at the end (null terminated)
235 * If \c datasize is not NULL, it is filled with the size of the data read.
237 * If \c freesrc is non-zero, the stream will be closed after being read.
239 * The data should be freed with SDL_free().
241 * \return the data, or NULL if there was an error.
243 extern DECLSPEC void *SDLCALL SDL_LoadFile(const char *file, size_t *datasize);
246 * \name Read endian functions
248 * Read an item of the specified endianness and return in native format.
251 extern DECLSPEC Uint8 SDLCALL SDL_ReadU8(SDL_RWops * src);
252 extern DECLSPEC Uint16 SDLCALL SDL_ReadLE16(SDL_RWops * src);
253 extern DECLSPEC Uint16 SDLCALL SDL_ReadBE16(SDL_RWops * src);
254 extern DECLSPEC Uint32 SDLCALL SDL_ReadLE32(SDL_RWops * src);
255 extern DECLSPEC Uint32 SDLCALL SDL_ReadBE32(SDL_RWops * src);
256 extern DECLSPEC Uint64 SDLCALL SDL_ReadLE64(SDL_RWops * src);
257 extern DECLSPEC Uint64 SDLCALL SDL_ReadBE64(SDL_RWops * src);
258 /* @} *//* Read endian functions */
261 * \name Write endian functions
263 * Write an item of native format to the specified endianness.
266 extern DECLSPEC size_t SDLCALL SDL_WriteU8(SDL_RWops * dst, Uint8 value);
267 extern DECLSPEC size_t SDLCALL SDL_WriteLE16(SDL_RWops * dst, Uint16 value);
268 extern DECLSPEC size_t SDLCALL SDL_WriteBE16(SDL_RWops * dst, Uint16 value);
269 extern DECLSPEC size_t SDLCALL SDL_WriteLE32(SDL_RWops * dst, Uint32 value);
270 extern DECLSPEC size_t SDLCALL SDL_WriteBE32(SDL_RWops * dst, Uint32 value);
271 extern DECLSPEC size_t SDLCALL SDL_WriteLE64(SDL_RWops * dst, Uint64 value);
272 extern DECLSPEC size_t SDLCALL SDL_WriteBE64(SDL_RWops * dst, Uint64 value);
273 /* @} *//* Write endian functions */
275 /* Ends C function definitions when using C++ */
279 #include "close_code.h"
281 #endif /* SDL_rwops_h_ */
283 /* vi: set ts=4 sw=4 expandtab: */