endianrw.h File Reference

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Data Structures

• struct _MG_RWops

Defines

• #define MGUI_RWseek(ctx, offset, whence)   (ctx)->seek(ctx, offset, whence)

  Seeks an MG_RWops object.
  

• #define MGUI_RWtell(ctx)   (ctx)->seek(ctx, 0, SEEK_CUR)

  Obtains the current value of the position indicator for a data source.
  

• #define MGUI_RWread(ctx, ptr, size, n)   (ctx)->read(ctx, ptr, size, n)

  Reads data blocks from a data source.
  

• #define MGUI_RWwrite(ctx, ptr, size, n)   (ctx)->write(ctx, ptr, size, n)

  Writes data blocks to a data source.
  

• #define MGUI_RWclose(ctx)   (ctx)->close(ctx)

  Closes an MG_RWops object.
  

• #define MGUI_RWeof(ctx)   (ctx)->eof(ctx)

  Tests the end-of-file indicator for an data source.
  

• #define ArchSwapLE16(X)   (X)
• #define ArchSwapLE32(X)   (X)
• #define ArchSwapLE64(X)   (X)
• #define ArchSwapBE16(X)   ArchSwap16(X)
• #define ArchSwapBE32(X)   ArchSwap32(X)
• #define ArchSwapBE64(X)   ArchSwap64(X)

Typedefs

• typedef struct _MG_RWops MG_RWops

Functions

• MG_EXPORT MG_RWops * MGUI_RWFromFile (const char *file, const char *mode)

  Creates an MG_RWops object from a file.
  

• MG_EXPORT MG_RWops * MGUI_RWFromFP (FILE *fp, int autoclose)

  Creates an MG_RWops object from an opened stdio FILE object.
  

• MG_EXPORT MG_RWops * MGUI_RWFromMem (void *mem, int size)

  Creates an MG_RWops object from a block of memory.
  

• MG_EXPORT void MGUI_InitMemRW (MG_RWops *area, void *mem, int size)

  Initializes an MG_RWops object from a block of memory.
  

• MG_EXPORT MG_RWops * MGUI_AllocRW (void)

  Allocates an uninitialized MG_RWops object.
  

• MG_EXPORT void MGUI_FreeRW (MG_RWops *area)

  Frees an MG_RWops object.
  

• MG_EXPORT int MGUI_RWgetc (MG_RWops *area)

  Reads the next character from an data source.
  

• Uint16 MGUI_ReadLE16 (MG_RWops *src)

  Reads a 16-bit little endian integer from a MG_RWops object.
  

• Uint16 MGUI_ReadBE16 (MG_RWops *src)

  Reads a 16-bit big endian integer from a MG_RWops object.
  

• Uint32 MGUI_ReadLE32 (MG_RWops *src)

  Reads a 32-bit little endian integer from a MG_RWops object.
  

• Uint32 MGUI_ReadBE32 (MG_RWops *src)

  Reads a 32-bit big endian integer from a MG_RWops object.
  

• Uint64 MGUI_ReadLE64 (MG_RWops *src)

  Reads a 64-bit little endian integer from a MG_RWops object.
  

• Uint64 MGUI_ReadBE64 (MG_RWops *src)

  Reads a 64-bit big endian integer from a MG_RWops object.
  

• int MGUI_WriteLE16 (MG_RWops *dst, Uint16 value)

  Writes an 16-bit integer of native format to a MG_RWops object in littlen endianness.
  

• int MGUI_WriteBE16 (MG_RWops *dst, Uint16 value)

  Writes an 16-bit integer of native format to a MG_RWops object in big endianness.
  

• int MGUI_WriteLE32 (MG_RWops *dst, Uint32 value)

  Writes an 32-bit integer of native format to a MG_RWops object in littlen endianness.
  

• int MGUI_WriteBE32 (MG_RWops *dst, Uint32 value)

  Writes an 32-bit integer of native format to a MG_RWops object in big endianness.
  

• int MGUI_WriteLE64 (MG_RWops *dst, Uint64 value)

  Writes an 64-bit integer of native format to a MG_RWops object in littlen endianness.
  

• int MGUI_WriteBE64 (MG_RWops *dst, Uint64 value)

  Writes an 64-bit integer of native format to a MG_RWops object in big endianness.
  

• Uint16 MGUI_ReadLE16FP (FILE *src)

  Reads a 16-bit little endian integer from a stdio FILE object.
  

• Uint32 MGUI_ReadLE32FP (FILE *src)

  Reads a 32-bit little endian integer from a stdio FILE object.
  

• int MGUI_WriteLE16FP (FILE *dst, Uint16 value)

  Writes an 16-bit integer of native format to a stdio FILE object in littlen endianness.
  

• int MGUI_WriteLE32FP (FILE *dst, Uint32 value)

  Writes an 32-bit integer of native format to a stdio FILE object in littlen endianness.
  

---

Detailed Description

Author:

Wei Yongming <ymwei@minigui.org>

Date:

2002/01/06

This file includes functions for reading and writing data from general sources, such as file, memory, etc., and also includes functions for reading and writing endian-specific values.

    Copyright (C) 2002-2009 Feynman Software.
    Copyright (C) 1998-2002 Wei Yongming.

    All rights reserved by Feynman Software.

    This file is part of MiniGUI, a compact cross-platform Graphics 
    User Interface (GUI) support system for real-time embedded systems.

 

Definition in file endianrw.h.