--- /dev/null
+/***************************************************************************/
+/* */
+/* ftstream.h */
+/* */
+/* Stream handling(specification). */
+/* */
+/* Copyright 1996-2001 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 __FTSTREAM_H__
+#define __FTSTREAM_H__
+
+
+#include <ft2build.h>
+#include FT_INTERNAL_OBJECTS_H
+
+
+FT_BEGIN_HEADER
+
+
+ /* format of an 8-bit frame_op value = [ xxxxx | e | s ] */
+ /* s is set to 1 if the value is signed, */
+ /* e is set to 1 if the value is little-endian */
+ /* xxxxx is a command */
+
+#define FT_FRAME_OP_SHIFT 2
+#define FT_FRAME_OP_SIGNED 1
+#define FT_FRAME_OP_LITTLE 2
+#define FT_FRAME_OP_COMMAND( x ) ( x >> FT_FRAME_OP_SHIFT )
+
+#define FT_MAKE_FRAME_OP( command, little, sign ) \
+ ( ( command << FT_FRAME_OP_SHIFT ) | ( little << 1 ) | sign )
+
+#define FT_FRAME_OP_END 0
+#define FT_FRAME_OP_START 1 /* start a new frame */
+#define FT_FRAME_OP_BYTE 2 /* read 1-byte value */
+#define FT_FRAME_OP_SHORT 3 /* read 2-byte value */
+#define FT_FRAME_OP_LONG 4 /* read 4-byte value */
+#define FT_FRAME_OP_OFF3 5 /* read 3-byte value */
+#define FT_FRAME_OP_BYTES 6 /* read a bytes sequence */
+
+
+ typedef enum FT_Frame_Op_
+ {
+ ft_frame_end = 0,
+ ft_frame_start = FT_MAKE_FRAME_OP( FT_FRAME_OP_START, 0, 0 ),
+
+ ft_frame_byte = FT_MAKE_FRAME_OP( FT_FRAME_OP_BYTE, 0, 0 ),
+ ft_frame_schar = FT_MAKE_FRAME_OP( FT_FRAME_OP_BYTE, 0, 1 ),
+
+ ft_frame_ushort_be = FT_MAKE_FRAME_OP( FT_FRAME_OP_SHORT, 0, 0 ),
+ ft_frame_short_be = FT_MAKE_FRAME_OP( FT_FRAME_OP_SHORT, 0, 1 ),
+ ft_frame_ushort_le = FT_MAKE_FRAME_OP( FT_FRAME_OP_SHORT, 1, 0 ),
+ ft_frame_short_le = FT_MAKE_FRAME_OP( FT_FRAME_OP_SHORT, 1, 1 ),
+
+ ft_frame_ulong_be = FT_MAKE_FRAME_OP( FT_FRAME_OP_LONG, 0, 0 ),
+ ft_frame_long_be = FT_MAKE_FRAME_OP( FT_FRAME_OP_LONG, 0, 1 ),
+ ft_frame_ulong_le = FT_MAKE_FRAME_OP( FT_FRAME_OP_LONG, 1, 0 ),
+ ft_frame_long_le = FT_MAKE_FRAME_OP( FT_FRAME_OP_LONG, 1, 1 ),
+
+ ft_frame_uoff3_be = FT_MAKE_FRAME_OP( FT_FRAME_OP_OFF3, 0, 0 ),
+ ft_frame_off3_be = FT_MAKE_FRAME_OP( FT_FRAME_OP_OFF3, 0, 1 ),
+ ft_frame_uoff3_le = FT_MAKE_FRAME_OP( FT_FRAME_OP_OFF3, 1, 0 ),
+ ft_frame_off3_le = FT_MAKE_FRAME_OP( FT_FRAME_OP_OFF3, 1, 1 ),
+
+ ft_frame_bytes = FT_MAKE_FRAME_OP( FT_FRAME_OP_BYTES, 0, 0 ),
+ ft_frame_skip = FT_MAKE_FRAME_OP( FT_FRAME_OP_BYTES, 0, 1 )
+
+ } FT_Frame_Op;
+
+
+ typedef struct FT_Frame_Field_
+ {
+ FT_Byte value;
+ FT_Byte size;
+ FT_UShort offset;
+
+ } FT_Frame_Field;
+
+
+ /* Construct an FT_Frame_Field out of a structure type and a field name. */
+ /* The structure type must be set in the FT_STRUCTURE macro before */
+ /* calling the FT_FRAME_START() macro. */
+#define FT_FIELD_SIZE( f ) \
+ (FT_Byte)sizeof ( ((FT_STRUCTURE*)0)->f )
+
+#define FT_FIELD_SIZE_DELTA( f ) \
+ (FT_Byte)sizeof ( ((FT_STRUCTURE*)0)->f[0] )
+
+#define FT_FIELD_OFFSET( f ) \
+ (FT_UShort)( offsetof( FT_STRUCTURE, f ) )
+
+#define FT_FRAME_FIELD( frame_op, field ) \
+ { \
+ frame_op, \
+ FT_FIELD_SIZE( field ), \
+ FT_FIELD_OFFSET( field ) \
+ }
+
+#define FT_MAKE_EMPTY_FIELD( frame_op ) { frame_op, 0, 0 }
+
+#define FT_FRAME_START( size ) { ft_frame_start, 0, size }
+#define FT_FRAME_END { ft_frame_end, 0, 0 }
+
+#define FT_FRAME_LONG( f ) FT_FRAME_FIELD( ft_frame_long_be, f )
+#define FT_FRAME_ULONG( f ) FT_FRAME_FIELD( ft_frame_ulong_be, f )
+#define FT_FRAME_SHORT( f ) FT_FRAME_FIELD( ft_frame_short_be, f )
+#define FT_FRAME_USHORT( f ) FT_FRAME_FIELD( ft_frame_ushort_be, f )
+#define FT_FRAME_BYTE( f ) FT_FRAME_FIELD( ft_frame_byte, f )
+#define FT_FRAME_CHAR( f ) FT_FRAME_FIELD( ft_frame_schar, f )
+
+#define FT_FRAME_LONG_LE( f ) FT_FRAME_FIELD( ft_frame_long_le, f )
+#define FT_FRAME_ULONG_LE( f ) FT_FRAME_FIELD( ft_frame_ulong_le, f )
+#define FT_FRAME_SHORT_LE( f ) FT_FRAME_FIELD( ft_frame_short_le, f )
+#define FT_FRAME_USHORT_LE( f ) FT_FRAME_FIELD( ft_frame_ushort_le, f )
+
+#define FT_FRAME_SKIP_LONG { ft_frame_long_be, 0, 0 }
+#define FT_FRAME_SKIP_SHORT { ft_frame_short_be, 0, 0 }
+#define FT_FRAME_SKIP_BYTE { ft_frame_byte, 0, 0 }
+
+#define FT_FRAME_BYTES( field, count ) \
+ { \
+ ft_frame_bytes, \
+ count, \
+ FT_FIELD_OFFSET( field ) \
+ }
+
+#define FT_FRAME_SKIP_BYTES( count ) { ft_frame_skip, count, 0 }
+
+
+
+ /*************************************************************************/
+ /* */
+ /* integer extraction macros -- the `buffer' parameter must ALWAYS be of */
+ /* type `char*' or equivalent (1-byte elements). */
+ /* */
+
+#define FT_GET_SHORT_BE( p ) \
+ ((FT_Int16)( ( (FT_Int16)(FT_Char)(p)[0] << 8 ) | \
+ (FT_Int16)(FT_Byte)(p)[1] ) )
+
+#define FT_GET_USHORT_BE( p ) \
+ ((FT_Int16)( ( (FT_UInt16)(FT_Byte)(p)[0] << 8 ) | \
+ (FT_UInt16)(FT_Byte)(p)[1] ) )
+
+#define FT_GET_OFF3_BE( p ) \
+ ( (FT_Int32) ( ( (FT_Int32)(FT_Char)(p)[0] << 16 ) | \
+ ( (FT_Int32)(FT_Byte)(p)[1] << 8 ) | \
+ (FT_Int32)(FT_Byte)(p)[2] ) )
+
+#define FT_GET_UOFF3_BE( p ) \
+ ( (FT_Int32) ( ( (FT_UInt32)(FT_Byte)(p)[0] << 16 ) | \
+ ( (FT_UInt32)(FT_Byte)(p)[1] << 8 ) | \
+ (FT_UInt32)(FT_Byte)(p)[2] ) )
+
+#define FT_GET_LONG_BE( p ) \
+ ( (FT_Int32) ( ( (FT_Int32)(FT_Char)(p)[0] << 24 ) | \
+ ( (FT_Int32)(FT_Byte)(p)[1] << 16 ) | \
+ ( (FT_Int32)(FT_Byte)(p)[2] << 8 ) | \
+ (FT_Int32)(FT_Byte)(p)[3] ) )
+
+#define FT_GET_ULONG_BE( p ) \
+ ( (FT_Int32) ( ( (FT_UInt32)(FT_Byte)(p)[0] << 24 ) | \
+ ( (FT_UInt32)(FT_Byte)(p)[1] << 16 ) | \
+ ( (FT_UInt32)(FT_Byte)(p)[2] << 8 ) | \
+ (FT_UInt32)(FT_Byte)(p)[3] ) )
+
+#define FT_GET_SHORT_LE( p ) \
+ ((FT_Int16)( ( (FT_Int16)(FT_Char)(p)[1] << 8 ) | \
+ (FT_Int16)(FT_Byte)(p)[0] ) )
+
+#define FT_GET_USHORT_LE( p ) \
+ ((FT_Int16)( ( (FT_UInt16)(FT_Byte)(p)[1] << 8 ) | \
+ (FT_UInt16)(FT_Byte)(p)[0] ) )
+
+#define FT_GET_OFF3_LE( p ) \
+ ( (FT_Int32) ( ( (FT_Int32)(FT_Char)(p)[2] << 16 ) | \
+ ( (FT_Int32)(FT_Byte)(p)[1] << 8 ) | \
+ (FT_Int32)(FT_Byte)(p)[0] ) )
+
+#define FT_GET_UOFF3_LE( p ) \
+ ( (FT_Int32) ( ( (FT_UInt32)(FT_Byte)(p)[2] << 16 ) | \
+ ( (FT_UInt32)(FT_Byte)(p)[1] << 8 ) | \
+ (FT_UInt32)(FT_Byte)(p)[0] ) )
+
+#define FT_GET_LONG_LE( p ) \
+ ( (FT_Int32) ( ( (FT_Int32)(FT_Char)(p)[3] << 24 ) | \
+ ( (FT_Int32)(FT_Byte)(p)[2] << 16 ) | \
+ ( (FT_Int32)(FT_Byte)(p)[1] << 8 ) | \
+ (FT_Int32)(FT_Byte)(p)[0] ) )
+
+#define FT_GET_ULONG_LE( p ) \
+ ( (FT_Int32) ( ( (FT_UInt32)(FT_Byte)(p)[3] << 24 ) | \
+ ( (FT_UInt32)(FT_Byte)(p)[2] << 16 ) | \
+ ( (FT_UInt32)(FT_Byte)(p)[1] << 8 ) | \
+ (FT_UInt32)(FT_Byte)(p)[0] ) )
+
+
+#define NEXT_Char( buffer ) \
+ ( (signed char)*buffer++ )
+
+#define NEXT_Byte( buffer ) \
+ ( (unsigned char)*buffer++ )
+
+#define NEXT_Short( buffer ) \
+ ( (short)( buffer += 2, FT_GET_SHORT_BE( buffer - 2 ) ) )
+
+#define NEXT_UShort( buffer ) \
+ ( (unsigned short)( buffer += 2, FT_GET_USHORT_BE( buffer - 2 ) ) )
+
+#define NEXT_Offset( buffer ) \
+ ( (long)( buffer += 3, FT_GET_OFF3_BE( buffer - 3 ) ) )
+
+#define NEXT_UOffset( buffer ) \
+ ( (unsigned long)( buffer += 3, FT_GET_UOFF3_BE( buffer - 3 ) ) )
+
+#define NEXT_Long( buffer ) \
+ ( (long)( buffer += 4, FT_GET_LONG_BE( buffer - 4 ) ) )
+
+#define NEXT_ULong( buffer ) \
+ ( (unsigned long)( buffer += 4, FT_GET_ULONG_BE( buffer - 4 ) ) )
+
+
+#define NEXT_ShortLE( buffer ) \
+ ( (short)( buffer += 2, FT_GET_SHORT_LE( buffer - 2 ) ) )
+
+#define NEXT_UShortLE( buffer ) \
+ ( (unsigned short)( buffer += 2, FT_GET_USHORT_LE( buffer - 2 ) ) )
+
+#define NEXT_OffsetLE( buffer ) \
+ ( (long)( buffer += 3, FT_GET_OFF3_LE( buffer - 3 ) ) )
+
+#define NEXT_UOffsetLE( buffer ) \
+ ( (unsigned long)( buffer += 3, FT_GET_UOFF3_LE( buffer - 3 ) ) )
+
+
+#define NEXT_LongLE( buffer ) \
+ ( (long)( buffer += 4, FT_GET_LONG_LE( buffer - 4 ) ) )
+
+#define NEXT_ULongLE( buffer ) \
+ ( (unsigned long)( buffer += 4, FT_GET_ULONG_LE( buffer - 4 ) ) )
+
+
+ /*************************************************************************/
+ /* */
+ /* Each GET_xxxx() macro uses an implicit `stream' variable. */
+ /* */
+#define FT_GET_MACRO( func, type ) ( (type)func( stream ) )
+
+#define GET_Char() FT_GET_MACRO( FT_Get_Char, FT_Char )
+#define GET_Byte() FT_GET_MACRO( FT_Get_Char, FT_Byte )
+#define GET_Short() FT_GET_MACRO( FT_Get_Short, FT_Short )
+#define GET_UShort() FT_GET_MACRO( FT_Get_Short, FT_UShort )
+#define GET_Offset() FT_GET_MACRO( FT_Get_Offset, FT_Long )
+#define GET_UOffset() FT_GET_MACRO( FT_Get_Offset, FT_ULong )
+#define GET_Long() FT_GET_MACRO( FT_Get_Long, FT_Long )
+#define GET_ULong() FT_GET_MACRO( FT_Get_Long, FT_ULong )
+#define GET_Tag4() FT_GET_MACRO( FT_Get_Long, FT_ULong )
+
+#define GET_ShortLE() FT_GET_MACRO( FT_Get_ShortLE, FT_Short )
+#define GET_UShortLE() FT_GET_MACRO( FT_Get_ShortLE, FT_UShort )
+#define GET_LongLE() FT_GET_MACRO( FT_Get_LongLE, FT_Short )
+#define GET_ULongLE() FT_GET_MACRO( FT_Get_LongLE, FT_Short )
+
+#define FT_READ_MACRO( func, type, var ) \
+ ( var = (type)func( stream, &error ), \
+ error != FT_Err_Ok )
+
+#define READ_Byte( var ) FT_READ_MACRO( FT_Read_Char, FT_Byte, var )
+#define READ_Char( var ) FT_READ_MACRO( FT_Read_Char, FT_Char, var )
+#define READ_Short( var ) FT_READ_MACRO( FT_Read_Short, FT_Short, var )
+#define READ_UShort( var ) FT_READ_MACRO( FT_Read_Short, FT_UShort, var )
+#define READ_Offset( var ) FT_READ_MACRO( FT_Read_Offset, FT_Long, var )
+#define READ_UOffset( var ) FT_READ_MACRO( FT_Read_Offset, FT_ULong, var )
+#define READ_Long( var ) FT_READ_MACRO( FT_Read_Long, FT_Long, var )
+#define READ_ULong( var ) FT_READ_MACRO( FT_Read_Long, FT_ULong, var )
+
+#define READ_ShortLE( var ) FT_READ_MACRO( FT_Read_ShortLE, FT_Short, var )
+#define READ_UShortLE( var ) FT_READ_MACRO( FT_Read_ShortLE, FT_UShort, var )
+#define READ_LongLE( var ) FT_READ_MACRO( FT_Read_LongLE, FT_Long, var )
+#define READ_ULongLE( var ) FT_READ_MACRO( FT_Read_LongLE, FT_ULong, var )
+
+
+ FT_BASE( void )
+ FT_New_Memory_Stream( FT_Library library,
+ FT_Byte* base,
+ FT_ULong size,
+ FT_Stream stream );
+
+ FT_BASE( FT_Error )
+ FT_Seek_Stream( FT_Stream stream,
+ FT_ULong pos );
+
+ FT_BASE( FT_Error )
+ FT_Skip_Stream( FT_Stream stream,
+ FT_Long distance );
+
+ FT_BASE( FT_Long )
+ FT_Stream_Pos( FT_Stream stream );
+
+
+ FT_BASE( FT_Error )
+ FT_Read_Stream( FT_Stream stream,
+ FT_Byte* buffer,
+ FT_ULong count );
+
+ FT_BASE( FT_Error )
+ FT_Read_Stream_At( FT_Stream stream,
+ FT_ULong pos,
+ FT_Byte* buffer,
+ FT_ULong count );
+
+ FT_BASE( FT_Error )
+ FT_Access_Frame( FT_Stream stream,
+ FT_ULong count );
+
+ FT_BASE( void )
+ FT_Forget_Frame( FT_Stream stream );
+
+ FT_BASE( FT_Error )
+ FT_Extract_Frame( FT_Stream stream,
+ FT_ULong count,
+ FT_Byte** pbytes );
+
+ FT_BASE( void )
+ FT_Release_Frame( FT_Stream stream,
+ FT_Byte** pbytes );
+
+ FT_BASE( FT_Char )
+ FT_Get_Char( FT_Stream stream );
+
+ FT_BASE( FT_Short )
+ FT_Get_Short( FT_Stream stream );
+
+ FT_BASE( FT_Long )
+ FT_Get_Offset( FT_Stream stream );
+
+ FT_BASE( FT_Long )
+ FT_Get_Long( FT_Stream stream );
+
+ FT_BASE( FT_Short )
+ FT_Get_ShortLE( FT_Stream stream );
+
+ FT_BASE( FT_Long )
+ FT_Get_LongLE( FT_Stream stream );
+
+
+ FT_BASE( FT_Char )
+ FT_Read_Char( FT_Stream stream,
+ FT_Error* error );
+
+ FT_BASE( FT_Short )
+ FT_Read_Short( FT_Stream stream,
+ FT_Error* error );
+
+ FT_BASE( FT_Long )
+ FT_Read_Offset( FT_Stream stream,
+ FT_Error* error );
+
+ FT_BASE( FT_Long )
+ FT_Read_Long( FT_Stream stream,
+ FT_Error* error );
+
+ FT_BASE( FT_Short )
+ FT_Read_ShortLE( FT_Stream stream,
+ FT_Error* error );
+
+ FT_BASE( FT_Long )
+ FT_Read_LongLE( FT_Stream stream,
+ FT_Error* error );
+
+ FT_BASE( FT_Error )
+ FT_Read_Fields( FT_Stream stream,
+ const FT_Frame_Field* fields,
+ void* structure );
+
+
+#define USE_Stream( resource, stream ) \
+ FT_SET_ERROR( FT_Open_Stream( resource, stream ) )
+
+#define DONE_Stream( stream ) \
+ FT_Done_Stream( stream )
+
+
+#define ACCESS_Frame( size ) \
+ FT_SET_ERROR( FT_Access_Frame( stream, size ) )
+
+#define FORGET_Frame() \
+ FT_Forget_Frame( stream )
+
+#define EXTRACT_Frame( size, bytes ) \
+ FT_SET_ERROR( FT_Extract_Frame( stream, size, \
+ (FT_Byte**)&(bytes) ) )
+
+#define RELEASE_Frame( bytes ) \
+ FT_Release_Frame( stream, (FT_Byte**)&(bytes) )
+
+#define FILE_Seek( position ) \
+ FT_SET_ERROR( FT_Seek_Stream( stream, position ) )
+
+#define FILE_Skip( distance ) \
+ FT_SET_ERROR( FT_Skip_Stream( stream, distance ) )
+
+#define FILE_Pos() \
+ FT_Stream_Pos( stream )
+
+#define FILE_Read( buffer, count ) \
+ FT_SET_ERROR( FT_Read_Stream( stream, \
+ (FT_Byte*)buffer, \
+ count ) )
+
+#define FILE_Read_At( position, buffer, count ) \
+ FT_SET_ERROR( FT_Read_Stream_At( stream, \
+ position, \
+ (FT_Byte*)buffer, \
+ count ) )
+
+#define READ_Fields( fields, object ) \
+ ( ( error = FT_Read_Fields( stream, fields, object ) ) != FT_Err_Ok )
+
+
+FT_END_HEADER
+
+#endif /* __FTSTREAM_H__ */
+
+
+/* END */
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