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Diffstat (limited to 'nx-X11/extras/freetype2/include/freetype/ftsysio.h')
| -rw-r--r-- | nx-X11/extras/freetype2/include/freetype/ftsysio.h | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/nx-X11/extras/freetype2/include/freetype/ftsysio.h b/nx-X11/extras/freetype2/include/freetype/ftsysio.h new file mode 100644 index 000000000..f8e49543f --- /dev/null +++ b/nx-X11/extras/freetype2/include/freetype/ftsysio.h @@ -0,0 +1,195 @@ +#ifndef __FT_SYSTEM_IO_H__ +#define __FT_SYSTEM_IO_H__ + + /************************************************************************/ + /************************************************************************/ + /***** *****/ + /***** NOTE: THE CONTENT OF THIS FILE IS NOT CURRENTLY USED *****/ + /***** IN NORMAL BUILDS. CONSIDER IT EXPERIMENTAL. *****/ + /***** *****/ + /************************************************************************/ + /************************************************************************/ + + + /******************************************************************** + * + * designing custom streams is a bit different now + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + */ + +#include <ft2build.h> +#include FT_INTERNAL_OBJECT_H + +FT_BEGIN_HEADER + + /*@******************************************************************* + * + * @type: FT_Stream + * + * @description: + * handle to an input stream object. These are also @FT_Object handles + */ + typedef struct FT_StreamRec_* FT_Stream; + + + /*@******************************************************************* + * + * @type: FT_Stream_Class + * + * @description: + * opaque handle to a @FT_Stream_ClassRec class structure describing + * the methods of input streams + */ + typedef const struct FT_Stream_ClassRec_* FT_Stream_Class; + + + /*@******************************************************************* + * + * @functype: FT_Stream_ReadFunc + * + * @description: + * a method used to read bytes from an input stream into memory + * + * @input: + * stream :: target stream handle + * buffer :: target buffer address + * size :: number of bytes to read + * + * @return: + * number of bytes effectively read. Must be <= 'size'. + */ + typedef FT_ULong (*FT_Stream_ReadFunc)( FT_Stream stream, + FT_Byte* buffer, + FT_ULong size ); + + + /*@******************************************************************* + * + * @functype: FT_Stream_SeekFunc + * + * @description: + * a method used to seek to a new position within a stream + * + * @input: + * stream :: target stream handle + * pos :: new read position, from start of stream + * + * @return: + * error code. 0 means success + */ + typedef FT_Error (*FT_Stream_SeekFunc)( FT_Stream stream, + FT_ULong pos ); + + + /*@******************************************************************* + * + * @struct: FT_Stream_ClassRec + * + * @description: + * a structure used to describe an input stream class + * + * @input: + * clazz :: root @FT_ClassRec fields + * stream_read :: stream byte read method + * stream_seek :: stream seek method + */ + typedef struct FT_Stream_ClassRec_ + { + FT_ClassRec clazz; + FT_Stream_ReadFunc stream_read; + FT_Stream_SeekFunc stream_seek; + + } FT_Stream_ClassRec; + + /* */ + +#define FT_STREAM_CLASS(x) ((FT_Stream_Class)(x)) +#define FT_STREAM_CLASS__READ(x) FT_STREAM_CLASS(x)->stream_read +#define FT_STREAM_CLASS__SEEK(x) FT_STREAM_CLASS(x)->stream_seek; + + /*@******************************************************************* + * + * @struct: FT_StreamRec + * + * @description: + * the input stream object structure. See @FT_Stream_ClassRec for + * its class descriptor + * + * @fields: + * object :: root @FT_ObjectRec fields + * size :: size of stream in bytes (0 if unknown) + * pos :: current position within stream + * base :: for memory-based streams, the address of the stream's + * first data byte in memory. NULL otherwise + * + * cursor :: the current cursor position within an input stream + * frame. Only valid within a FT_FRAME_ENTER .. FT_FRAME_EXIT + * block; NULL otherwise + * + * limit :: the current frame limit within a FT_FRAME_ENTER .. + * FT_FRAME_EXIT block. NULL otherwise + */ + typedef struct FT_StreamRec_ + { + FT_ObjectRec object; + FT_ULong size; + FT_ULong pos; + const FT_Byte* base; + const FT_Byte* cursor; + const FT_Byte* limit; + + } FT_StreamRec; + + /* some useful macros */ +#define FT_STREAM(x) ((FT_Stream)(x)) +#define FT_STREAM_P(x) ((FT_Stream*)(x)) + +#define FT_STREAM__READ(x) FT_STREAM_CLASS__READ(FT_OBJECT__CLASS(x)) +#define FT_STREAM__SEEK(x) FT_STREAM_CLASS__SEEK(FT_OBJECT__CLASS(x)) + +#define FT_STREAM_IS_BASED(x) ( FT_STREAM(x)->base != NULL ) + + /* */ + + /* create new memory-based stream */ + FT_BASE( FT_Error ) ft_stream_new_memory( const FT_Byte* stream_base, + FT_ULong stream_size, + FT_Memory memory, + FT_Stream *astream ); + + FT_BASE( FT_Error ) ft_stream_new_iso( const char* pathanme, + FT_Memory memory, + FT_Stream *astream ); + + + /* handle to default stream class implementation for a given build */ + /* this is used by "FT_New_Face" */ + /* */ + FT_APIVAR( FT_Type ) ft_stream_default_type; + +FT_END_HEADER + +#endif /* __FT_SYSTEM_STREAM_H__ */ |