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Diffstat (limited to 'nx-X11/extras/freetype2/include/freetype/ftsystem.h')
| -rw-r--r-- | nx-X11/extras/freetype2/include/freetype/ftsystem.h | 309 |
1 files changed, 309 insertions, 0 deletions
diff --git a/nx-X11/extras/freetype2/include/freetype/ftsystem.h b/nx-X11/extras/freetype2/include/freetype/ftsystem.h new file mode 100644 index 000000000..d1c55f7ae --- /dev/null +++ b/nx-X11/extras/freetype2/include/freetype/ftsystem.h @@ -0,0 +1,309 @@ +/***************************************************************************/ +/* */ +/* ftsystem.h */ +/* */ +/* FreeType low-level system interface definition (specification). */ +/* */ +/* Copyright 1996-2001, 2002 by */ +/* David Turner, Robert Wilhelm, and Werner Lemberg. */ +/* */ +/* This file is part of the FreeType project, and may only be used, */ +/* modified, and distributed under the terms of the FreeType project */ +/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/***************************************************************************/ + + +#ifndef __FTSYSTEM_H__ +#define __FTSYSTEM_H__ + + +#include <ft2build.h> + + +FT_BEGIN_HEADER + + + /*************************************************************************/ + /* */ + /* <Section> */ + /* system_interface */ + /* */ + /* <Title> */ + /* System Interface */ + /* */ + /* <Abstract> */ + /* How FreeType manages memory and i/o. */ + /* */ + /* <Description> */ + /* This section contains various definitions related to memory */ + /* management and i/o access. You need to understand this */ + /* information if you want to use a custom memory manager or you own */ + /* input i/o streams. */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* M E M O R Y M A N A G E M E N T */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* @type: */ + /* FT_Memory */ + /* */ + /* @description: */ + /* A handle to a given memory manager object, defined with a */ + /* @FT_MemoryRec structure. */ + /* */ + typedef struct FT_MemoryRec_* FT_Memory; + + + /*************************************************************************/ + /* */ + /* @functype: */ + /* FT_Alloc_Func */ + /* */ + /* @description: */ + /* A function used to allocate `size' bytes from `memory'. */ + /* */ + /* @input: */ + /* memory :: A handle to the source memory manager. */ + /* */ + /* size :: The size in bytes to allocate. */ + /* */ + /* @return: */ + /* Address of new memory block. 0 in case of failure. */ + /* */ + typedef void* + (*FT_Alloc_Func)( FT_Memory memory, + long size ); + + + /*************************************************************************/ + /* */ + /* @functype: */ + /* FT_Free_Func */ + /* */ + /* @description: */ + /* A function used to release a given block of memory. */ + /* */ + /* @input: */ + /* memory :: A handle to the source memory manager. */ + /* */ + /* block :: The address of the target memory block. */ + /* */ + typedef void + (*FT_Free_Func)( FT_Memory memory, + void* block ); + + + /*************************************************************************/ + /* */ + /* @functype: */ + /* FT_Realloc_Func */ + /* */ + /* @description: */ + /* a function used to re-allocate a given block of memory. */ + /* */ + /* @input: */ + /* memory :: A handle to the source memory manager. */ + /* */ + /* cur_size :: The block's current size in bytes. */ + /* */ + /* new_size :: The block's requested new size. */ + /* */ + /* block :: The block's current address. */ + /* */ + /* @return: */ + /* New block address. 0 in case of memory shortage. */ + /* */ + /* @note: */ + /* In case of error, the old block must still be available. */ + /* */ + typedef void* + (*FT_Realloc_Func)( FT_Memory memory, + long cur_size, + long new_size, + void* block ); + + + /*************************************************************************/ + /* */ + /* @struct: */ + /* FT_MemoryRec */ + /* */ + /* @description: */ + /* A structure used to describe a given memory manager to FreeType 2. */ + /* */ + /* @fields: */ + /* user :: A generic typeless pointer for user data. */ + /* */ + /* alloc :: A pointer type to an allocation function. */ + /* */ + /* free :: A pointer type to an memory freeing function. */ + /* */ + /* realloc :: A pointer type to a reallocation function. */ + /* */ + struct FT_MemoryRec_ + { + void* user; + FT_Alloc_Func alloc; + FT_Free_Func free; + FT_Realloc_Func realloc; + }; + + + /*************************************************************************/ + /* */ + /* I / O M A N A G E M E N T */ + /* */ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* @type: */ + /* FT_Stream */ + /* */ + /* @description: */ + /* A handle to an input stream. */ + /* */ + typedef struct FT_StreamRec_* FT_Stream; + + + /*************************************************************************/ + /* */ + /* @struct: */ + /* FT_StreamDesc */ + /* */ + /* @description: */ + /* A union type used to store either a long or a pointer. This is */ + /* used to store a file descriptor or a FILE* in an input stream. */ + /* */ + typedef union FT_StreamDesc_ + { + long value; + void* pointer; + + } FT_StreamDesc; + + + /*************************************************************************/ + /* */ + /* @functype: */ + /* FT_Stream_IoFunc */ + /* */ + /* @description: */ + /* A function used to seek and read data from a given input stream. */ + /* */ + /* @input: */ + /* stream :: A handle to the source stream. */ + /* */ + /* offset :: The offset of read in stream (always from start). */ + /* */ + /* buffer :: The address of the read buffer. */ + /* */ + /* count :: The number of bytes to read from the stream. */ + /* */ + /* @return: */ + /* The number of bytes effectively read by the stream. */ + /* */ + /* @note: */ + /* This function might be called to perform a seek or skip operation */ + /* with a `count' of 0. */ + /* */ + typedef unsigned long + (*FT_Stream_IoFunc)( FT_Stream stream, + unsigned long offset, + unsigned char* buffer, + unsigned long count ); + + + /*************************************************************************/ + /* */ + /* @functype: */ + /* FT_Stream_CloseFunc */ + /* */ + /* @description: */ + /* A function used to close a given input stream. */ + /* */ + /* @input: */ + /* stream :: A handle to the target stream. */ + /* */ + typedef void + (*FT_Stream_CloseFunc)( FT_Stream stream ); + + + /*************************************************************************/ + /* */ + /* @struct: */ + /* FT_StreamRec */ + /* */ + /* @description: */ + /* A structure used to describe an input stream. */ + /* */ + /* @input: */ + /* base :: For memory-based streams, this is the address of the */ + /* first stream byte in memory. This field should */ + /* always be set to NULL for disk-based streams. */ + /* */ + /* size :: The stream size in bytes. */ + /* */ + /* pos :: The current position within the stream. */ + /* */ + /* descriptor :: This field is a union that can hold an integer or a */ + /* pointer. It is used by stream implementations to */ + /* store file descriptors or FILE* pointers. */ + /* */ + /* pathname :: This field is completely ignored by FreeType. */ + /* However, it is often useful during debugging to use */ + /* it to store the stream's filename (where available). */ + /* */ + /* read :: The stream's input function. */ + /* */ + /* close :: The stream;s close function. */ + /* */ + /* memory :: The memory manager to use to preload frames. This is */ + /* set internally by FreeType and shouldn't be touched */ + /* by stream implementations. */ + /* */ + /* cursor :: This field is set and used internally by FreeType */ + /* when parsing frames. */ + /* */ + /* limit :: This field is set and used internally by FreeType */ + /* when parsing frames. */ + /* */ + typedef struct FT_StreamRec_ + { + unsigned char* base; + unsigned long size; + unsigned long pos; + + FT_StreamDesc descriptor; + FT_StreamDesc pathname; + FT_Stream_IoFunc read; + FT_Stream_CloseFunc close; + + FT_Memory memory; + unsigned char* cursor; + unsigned char* limit; + + } FT_StreamRec; + + + /* */ + + +FT_END_HEADER + +#endif /* __FTSYSTEM_H__ */ + + +/* END */ |