ftstream.h
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上传日期:2020-08-09
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- /***************************************************************************/
- /* */
- /* ftstream.h */
- /* */
- /* Stream handling (specification). */
- /* */
- /* Copyright 1996-2001, 2002, 2004, 2005, 2006 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_SYSTEM_H
- #include FT_INTERNAL_OBJECTS_H
- FT_BEGIN_HEADER
- /* format of an 8-bit frame_op value: */
- /* */
- /* bit 76543210 */
- /* xxxxxxes */
- /* */
- /* s is set to 1 if the value is signed. */
- /* e is set to 1 if the value is little-endian. */
- /* xxx 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_OFF3( f ) FT_FRAME_FIELD( ft_frame_off3_be, f )
- #define FT_FRAME_UOFF3( f ) FT_FRAME_FIELD( ft_frame_uoff3_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_OFF3_LE( f ) FT_FRAME_FIELD( ft_frame_off3_le, f )
- #define FT_FRAME_UOFF3_LE( f ) FT_FRAME_FIELD( ft_frame_uoff3_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_BYTE_( p, i ) ( ((const FT_Byte*)(p))[(i)] )
- #define FT_INT8_( p, i ) ( ((const FT_Char*)(p))[(i)] )
- #define FT_INT16( x ) ( (FT_Int16)(x) )
- #define FT_UINT16( x ) ( (FT_UInt16)(x) )
- #define FT_INT32( x ) ( (FT_Int32)(x) )
- #define FT_UINT32( x ) ( (FT_UInt32)(x) )
- #define FT_BYTE_I16( p, i, s ) ( FT_INT16( FT_BYTE_( p, i ) ) << (s) )
- #define FT_BYTE_U16( p, i, s ) ( FT_UINT16( FT_BYTE_( p, i ) ) << (s) )
- #define FT_BYTE_I32( p, i, s ) ( FT_INT32( FT_BYTE_( p, i ) ) << (s) )
- #define FT_BYTE_U32( p, i, s ) ( FT_UINT32( FT_BYTE_( p, i ) ) << (s) )
- #define FT_INT8_I16( p, i, s ) ( FT_INT16( FT_INT8_( p, i ) ) << (s) )
- #define FT_INT8_U16( p, i, s ) ( FT_UINT16( FT_INT8_( p, i ) ) << (s) )
- #define FT_INT8_I32( p, i, s ) ( FT_INT32( FT_INT8_( p, i ) ) << (s) )
- #define FT_INT8_U32( p, i, s ) ( FT_UINT32( FT_INT8_( p, i ) ) << (s) )
- #define FT_PEEK_SHORT( p ) FT_INT16( FT_INT8_I16( p, 0, 8) |
- FT_BYTE_I16( p, 1, 0) )
- #define FT_PEEK_USHORT( p ) FT_UINT16( FT_BYTE_U16( p, 0, 8 ) |
- FT_BYTE_U16( p, 1, 0 ) )
- #define FT_PEEK_LONG( p ) FT_INT32( FT_INT8_I32( p, 0, 24 ) |
- FT_BYTE_I32( p, 1, 16 ) |
- FT_BYTE_I32( p, 2, 8 ) |
- FT_BYTE_I32( p, 3, 0 ) )
- #define FT_PEEK_ULONG( p ) FT_UINT32( FT_BYTE_U32( p, 0, 24 ) |
- FT_BYTE_U32( p, 1, 16 ) |
- FT_BYTE_U32( p, 2, 8 ) |
- FT_BYTE_U32( p, 3, 0 ) )
- #define FT_PEEK_OFF3( p ) FT_INT32( FT_INT8_I32( p, 0, 16 ) |
- FT_BYTE_I32( p, 1, 8 ) |
- FT_BYTE_I32( p, 2, 0 ) )
- #define FT_PEEK_UOFF3( p ) FT_UINT32( FT_BYTE_U32( p, 0, 16 ) |
- FT_BYTE_U32( p, 1, 8 ) |
- FT_BYTE_U32( p, 2, 0 ) )
- #define FT_PEEK_SHORT_LE( p ) FT_INT16( FT_INT8_I16( p, 1, 8 ) |
- FT_BYTE_I16( p, 0, 0 ) )
- #define FT_PEEK_USHORT_LE( p ) FT_UINT16( FT_BYTE_U16( p, 1, 8 ) |
- FT_BYTE_U16( p, 0, 0 ) )
- #define FT_PEEK_LONG_LE( p ) FT_INT32( FT_INT8_I32( p, 3, 24 ) |
- FT_BYTE_I32( p, 2, 16 ) |
- FT_BYTE_I32( p, 1, 8 ) |
- FT_BYTE_I32( p, 0, 0 ) )
- #define FT_PEEK_ULONG_LE( p ) FT_UINT32( FT_BYTE_U32( p, 3, 24 ) |
- FT_BYTE_U32( p, 2, 16 ) |
- FT_BYTE_U32( p, 1, 8 ) |
- FT_BYTE_U32( p, 0, 0 ) )
- #define FT_PEEK_OFF3_LE( p ) FT_INT32( FT_INT8_I32( p, 2, 16 ) |
- FT_BYTE_I32( p, 1, 8 ) |
- FT_BYTE_I32( p, 0, 0 ) )
- #define FT_PEEK_UOFF3_LE( p ) FT_UINT32( FT_BYTE_U32( p, 2, 16 ) |
- FT_BYTE_U32( p, 1, 8 ) |
- FT_BYTE_U32( p, 0, 0 ) )
- #define FT_NEXT_CHAR( buffer )
- ( (signed char)*buffer++ )
- #define FT_NEXT_BYTE( buffer )
- ( (unsigned char)*buffer++ )
- #define FT_NEXT_SHORT( buffer )
- ( (short)( buffer += 2, FT_PEEK_SHORT( buffer - 2 ) ) )
- #define FT_NEXT_USHORT( buffer )
- ( (unsigned short)( buffer += 2, FT_PEEK_USHORT( buffer - 2 ) ) )
- #define FT_NEXT_OFF3( buffer )
- ( (long)( buffer += 3, FT_PEEK_OFF3( buffer - 3 ) ) )
- #define FT_NEXT_UOFF3( buffer )
- ( (unsigned long)( buffer += 3, FT_PEEK_UOFF3( buffer - 3 ) ) )
- #define FT_NEXT_LONG( buffer )
- ( (long)( buffer += 4, FT_PEEK_LONG( buffer - 4 ) ) )
- #define FT_NEXT_ULONG( buffer )
- ( (unsigned long)( buffer += 4, FT_PEEK_ULONG( buffer - 4 ) ) )
- #define FT_NEXT_SHORT_LE( buffer )
- ( (short)( buffer += 2, FT_PEEK_SHORT_LE( buffer - 2 ) ) )
- #define FT_NEXT_USHORT_LE( buffer )
- ( (unsigned short)( buffer += 2, FT_PEEK_USHORT_LE( buffer - 2 ) ) )
- #define FT_NEXT_OFF3_LE( buffer )
- ( (long)( buffer += 3, FT_PEEK_OFF3_LE( buffer - 3 ) ) )
- #define FT_NEXT_UOFF3_LE( buffer )
- ( (unsigned long)( buffer += 3, FT_PEEK_UOFF3_LE( buffer - 3 ) ) )
- #define FT_NEXT_LONG_LE( buffer )
- ( (long)( buffer += 4, FT_PEEK_LONG_LE( buffer - 4 ) ) )
- #define FT_NEXT_ULONG_LE( buffer )
- ( (unsigned long)( buffer += 4, FT_PEEK_ULONG_LE( buffer - 4 ) ) )
- /*************************************************************************/
- /* */
- /* Each GET_xxxx() macro uses an implicit `stream' variable. */
- /* */
- #if 0
- #define FT_GET_MACRO( type ) FT_NEXT_ ## type ( stream->cursor )
- #define FT_GET_CHAR() FT_GET_MACRO( CHAR )
- #define FT_GET_BYTE() FT_GET_MACRO( BYTE )
- #define FT_GET_SHORT() FT_GET_MACRO( SHORT )
- #define FT_GET_USHORT() FT_GET_MACRO( USHORT )
- #define FT_GET_OFF3() FT_GET_MACRO( OFF3 )
- #define FT_GET_UOFF3() FT_GET_MACRO( UOFF3 )
- #define FT_GET_LONG() FT_GET_MACRO( LONG )
- #define FT_GET_ULONG() FT_GET_MACRO( ULONG )
- #define FT_GET_TAG4() FT_GET_MACRO( ULONG )
- #define FT_GET_SHORT_LE() FT_GET_MACRO( SHORT_LE )
- #define FT_GET_USHORT_LE() FT_GET_MACRO( USHORT_LE )
- #define FT_GET_LONG_LE() FT_GET_MACRO( LONG_LE )
- #define FT_GET_ULONG_LE() FT_GET_MACRO( ULONG_LE )
- #else
- #define FT_GET_MACRO( func, type ) ( (type)func( stream ) )
- #define FT_GET_CHAR() FT_GET_MACRO( FT_Stream_GetChar, FT_Char )
- #define FT_GET_BYTE() FT_GET_MACRO( FT_Stream_GetChar, FT_Byte )
- #define FT_GET_SHORT() FT_GET_MACRO( FT_Stream_GetShort, FT_Short )
- #define FT_GET_USHORT() FT_GET_MACRO( FT_Stream_GetShort, FT_UShort )
- #define FT_GET_OFF3() FT_GET_MACRO( FT_Stream_GetOffset, FT_Long )
- #define FT_GET_UOFF3() FT_GET_MACRO( FT_Stream_GetOffset, FT_ULong )
- #define FT_GET_LONG() FT_GET_MACRO( FT_Stream_GetLong, FT_Long )
- #define FT_GET_ULONG() FT_GET_MACRO( FT_Stream_GetLong, FT_ULong )
- #define FT_GET_TAG4() FT_GET_MACRO( FT_Stream_GetLong, FT_ULong )
- #define FT_GET_SHORT_LE() FT_GET_MACRO( FT_Stream_GetShortLE, FT_Short )
- #define FT_GET_USHORT_LE() FT_GET_MACRO( FT_Stream_GetShortLE, FT_UShort )
- #define FT_GET_LONG_LE() FT_GET_MACRO( FT_Stream_GetLongLE, FT_Long )
- #define FT_GET_ULONG_LE() FT_GET_MACRO( FT_Stream_GetLongLE, FT_ULong )
- #endif
- #define FT_READ_MACRO( func, type, var )
- ( var = (type)func( stream, &error ),
- error != FT_Err_Ok )
- #define FT_READ_BYTE( var ) FT_READ_MACRO( FT_Stream_ReadChar, FT_Byte, var )
- #define FT_READ_CHAR( var ) FT_READ_MACRO( FT_Stream_ReadChar, FT_Char, var )
- #define FT_READ_SHORT( var ) FT_READ_MACRO( FT_Stream_ReadShort, FT_Short, var )
- #define FT_READ_USHORT( var ) FT_READ_MACRO( FT_Stream_ReadShort, FT_UShort, var )
- #define FT_READ_OFF3( var ) FT_READ_MACRO( FT_Stream_ReadOffset, FT_Long, var )
- #define FT_READ_UOFF3( var ) FT_READ_MACRO( FT_Stream_ReadOffset, FT_ULong, var )
- #define FT_READ_LONG( var ) FT_READ_MACRO( FT_Stream_ReadLong, FT_Long, var )
- #define FT_READ_ULONG( var ) FT_READ_MACRO( FT_Stream_ReadLong, FT_ULong, var )
- #define FT_READ_SHORT_LE( var ) FT_READ_MACRO( FT_Stream_ReadShortLE, FT_Short, var )
- #define FT_READ_USHORT_LE( var ) FT_READ_MACRO( FT_Stream_ReadShortLE, FT_UShort, var )
- #define FT_READ_LONG_LE( var ) FT_READ_MACRO( FT_Stream_ReadLongLE, FT_Long, var )
- #define FT_READ_ULONG_LE( var ) FT_READ_MACRO( FT_Stream_ReadLongLE, FT_ULong, var )
- #ifndef FT_CONFIG_OPTION_NO_DEFAULT_SYSTEM
- /* initialize a stream for reading a regular system stream */
- FT_BASE( FT_Error )
- FT_Stream_Open( FT_Stream stream,
- const char* filepathname );
- #endif /* FT_CONFIG_OPTION_NO_DEFAULT_SYSTEM */
- /* create a new (input) stream from an FT_Open_Args structure */
- FT_BASE( FT_Error )
- FT_Stream_New( FT_Library library,
- const FT_Open_Args* args,
- FT_Stream *astream );
- /* free a stream */
- FT_BASE( void )
- FT_Stream_Free( FT_Stream stream,
- FT_Int external );
- /* initialize a stream for reading in-memory data */
- FT_BASE( void )
- FT_Stream_OpenMemory( FT_Stream stream,
- const FT_Byte* base,
- FT_ULong size );
- /* close a stream (does not destroy the stream structure) */
- FT_BASE( void )
- FT_Stream_Close( FT_Stream stream );
- /* seek within a stream. position is relative to start of stream */
- FT_BASE( FT_Error )
- FT_Stream_Seek( FT_Stream stream,
- FT_ULong pos );
- /* skip bytes in a stream */
- FT_BASE( FT_Error )
- FT_Stream_Skip( FT_Stream stream,
- FT_Long distance );
- /* return current stream position */
- FT_BASE( FT_Long )
- FT_Stream_Pos( FT_Stream stream );
- /* read bytes from a stream into a user-allocated buffer, returns an */
- /* error if not all bytes could be read. */
- FT_BASE( FT_Error )
- FT_Stream_Read( FT_Stream stream,
- FT_Byte* buffer,
- FT_ULong count );
- /* read bytes from a stream at a given position */
- FT_BASE( FT_Error )
- FT_Stream_ReadAt( FT_Stream stream,
- FT_ULong pos,
- FT_Byte* buffer,
- FT_ULong count );
- /* try to read bytes at the end of a stream; return number of bytes */
- /* really available */
- FT_BASE( FT_ULong )
- FT_Stream_TryRead( FT_Stream stream,
- FT_Byte* buffer,
- FT_ULong count );
- /* Enter a frame of `count' consecutive bytes in a stream. Returns an */
- /* error if the frame could not be read/accessed. The caller can use */
- /* the FT_Stream_Get_XXX functions to retrieve frame data without */
- /* error checks. */
- /* */
- /* You must _always_ call FT_Stream_ExitFrame() once you have entered */
- /* a stream frame! */
- /* */
- FT_BASE( FT_Error )
- FT_Stream_EnterFrame( FT_Stream stream,
- FT_ULong count );
- /* exit a stream frame */
- FT_BASE( void )
- FT_Stream_ExitFrame( FT_Stream stream );
- /* Extract a stream frame. If the stream is disk-based, a heap block */
- /* is allocated and the frame bytes are read into it. If the stream */
- /* is memory-based, this function simply set a pointer to the data. */
- /* */
- /* Useful to optimize access to memory-based streams transparently. */
- /* */
- /* All extracted frames must be `freed' with a call to the function */
- /* FT_Stream_ReleaseFrame(). */
- /* */
- FT_BASE( FT_Error )
- FT_Stream_ExtractFrame( FT_Stream stream,
- FT_ULong count,
- FT_Byte** pbytes );
- /* release an extract frame (see FT_Stream_ExtractFrame) */
- FT_BASE( void )
- FT_Stream_ReleaseFrame( FT_Stream stream,
- FT_Byte** pbytes );
- /* read a byte from an entered frame */
- FT_BASE( FT_Char )
- FT_Stream_GetChar( FT_Stream stream );
- /* read a 16-bit big-endian integer from an entered frame */
- FT_BASE( FT_Short )
- FT_Stream_GetShort( FT_Stream stream );
- /* read a 24-bit big-endian integer from an entered frame */
- FT_BASE( FT_Long )
- FT_Stream_GetOffset( FT_Stream stream );
- /* read a 32-bit big-endian integer from an entered frame */
- FT_BASE( FT_Long )
- FT_Stream_GetLong( FT_Stream stream );
- /* read a 16-bit little-endian integer from an entered frame */
- FT_BASE( FT_Short )
- FT_Stream_GetShortLE( FT_Stream stream );
- /* read a 32-bit little-endian integer from an entered frame */
- FT_BASE( FT_Long )
- FT_Stream_GetLongLE( FT_Stream stream );
- /* read a byte from a stream */
- FT_BASE( FT_Char )
- FT_Stream_ReadChar( FT_Stream stream,
- FT_Error* error );
- /* read a 16-bit big-endian integer from a stream */
- FT_BASE( FT_Short )
- FT_Stream_ReadShort( FT_Stream stream,
- FT_Error* error );
- /* read a 24-bit big-endian integer from a stream */
- FT_BASE( FT_Long )
- FT_Stream_ReadOffset( FT_Stream stream,
- FT_Error* error );
- /* read a 32-bit big-endian integer from a stream */
- FT_BASE( FT_Long )
- FT_Stream_ReadLong( FT_Stream stream,
- FT_Error* error );
- /* read a 16-bit little-endian integer from a stream */
- FT_BASE( FT_Short )
- FT_Stream_ReadShortLE( FT_Stream stream,
- FT_Error* error );
- /* read a 32-bit little-endian integer from a stream */
- FT_BASE( FT_Long )
- FT_Stream_ReadLongLE( FT_Stream stream,
- FT_Error* error );
- /* Read a structure from a stream. The structure must be described */
- /* by an array of FT_Frame_Field records. */
- FT_BASE( FT_Error )
- FT_Stream_ReadFields( FT_Stream stream,
- const FT_Frame_Field* fields,
- void* structure );
- #define FT_STREAM_POS()
- FT_Stream_Pos( stream )
- #define FT_STREAM_SEEK( position )
- FT_SET_ERROR( FT_Stream_Seek( stream, position ) )
- #define FT_STREAM_SKIP( distance )
- FT_SET_ERROR( FT_Stream_Skip( stream, distance ) )
- #define FT_STREAM_READ( buffer, count )
- FT_SET_ERROR( FT_Stream_Read( stream,
- (FT_Byte*)buffer,
- count ) )
- #define FT_STREAM_READ_AT( position, buffer, count )
- FT_SET_ERROR( FT_Stream_ReadAt( stream,
- position,
- (FT_Byte*)buffer,
- count ) )
- #define FT_STREAM_READ_FIELDS( fields, object )
- FT_SET_ERROR( FT_Stream_ReadFields( stream, fields, object ) )
- #define FT_FRAME_ENTER( size )
- FT_SET_ERROR(
- FT_DEBUG_INNER( FT_Stream_EnterFrame( stream, size ) ) )
- #define FT_FRAME_EXIT()
- FT_DEBUG_INNER( FT_Stream_ExitFrame( stream ) )
- #define FT_FRAME_EXTRACT( size, bytes )
- FT_SET_ERROR(
- FT_DEBUG_INNER( FT_Stream_ExtractFrame( stream, size,
- (FT_Byte**)&(bytes) ) ) )
- #define FT_FRAME_RELEASE( bytes )
- FT_DEBUG_INNER( FT_Stream_ReleaseFrame( stream,
- (FT_Byte**)&(bytes) ) )
- FT_END_HEADER
- #endif /* __FTSTREAM_H__ */
- /* END */