adding new experimental header files
This commit is contained in:
David Turner
parent
0b12544efd
commit
d833d4c12d
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#ifndef __FT_SYSTEM_IO_H__
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#define __FT_SYSTEM_IO_H__
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#include <ft2build.h>
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#include FT_INTERNAL_OBJECT_H
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FT_BEGIN_HEADER
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/* handle to a FT_Stream object */
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typedef struct FT_StreamRec_* FT_Stream;
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/* handle to the FT_Stream class */
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typedef const struct FT_Stream_ClassRec_* FT_Stream_Class;
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/* a method used to read data from a stream into a buffer */
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typedef FT_ULong (*FT_Stream_ReadFunc)( FT_Stream stream,
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FT_Byte* buffer,
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FT_ULong size );
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/* a method used to seek to a new position within a stream */
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/* position is always relative to the start */
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typedef FT_Error (*FT_Stream_SeekFunc)( FT_Stream stream,
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FT_ULong pos );
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/* the stream class structure + some useful macros */
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typedef struct FT_Stream_ClassRec_
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{
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FT_ClassRec clazz;
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FT_Stream_ReadFunc stream_read;
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FT_Stream_SeekFunc stream_seek;
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} FT_Stream_ClassRec;
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#define FT_STREAM_CLASS(x) ((FT_Stream_Class)(x))
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#define FT_STREAM_CLASS__READ(x) FT_STREAM_CLASS(x)->stream_read
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#define FT_STREAM_CLASS__SEEK(x) FT_STREAM_CLASS(x)->stream_seek;
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/* the base FT_Stream object structure */
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typedef struct FT_StreamRec_
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{
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FT_ObjectRec object;
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FT_ULong size;
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FT_ULong pos;
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const FT_Byte* base;
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const FT_Byte* cursor;
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const FT_Byte* limit;
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} FT_StreamRec;
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/* some useful macros */
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#define FT_STREAM(x) ((FT_Stream)(x))
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#define FT_STREAM_P(x) ((FT_Stream*)(x))
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#define FT_STREAM__READ(x) FT_STREAM_CLASS__READ(FT_OBJECT__CLASS(x))
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#define FT_STREAM__SEEK(x) FT_STREAM_CLASS__SEEK(FT_OBJECT__CLASS(x))
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#define FT_STREAM_IS_BASED(x) ( FT_STREAM(x)->base != NULL )
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#if 0
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#endif
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/* */
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FT_END_HEADER
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#endif /* __FT_SYSTEM_STREAM_H__ */
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@ -0,0 +1,67 @@
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#ifndef __FT_SYSTEM_MEMORY_H__
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#define __FT_SYSTEM_MEMORY_H__
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#include <ft2build.h>
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FT_BEGIN_HEADER
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/* handle to memory structure */
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typedef struct FT_MemoryRec_* FT_Memory;
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/* a function used to allocate a new block of memory from a heap */
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typedef FT_Pointer (*FT_Memory_AllocFunc)( FT_ULong size,
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FT_Memory memory );
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/* a function used to free a block of memory */
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typedef void (*FT_Memory_FreeFunc) ( FT_Pointer block,
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FT_Memory memory );
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/* a function used to reallocate a given memory block to a new size */
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typedef FT_Pointer (*FT_Memory_ReallocFunc)( FT_Pointer block,
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FT_ULong new_size,
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FT_ULong cur_size,
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FT_Memory memory );
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/* a function called to allocate a new structure of 'size' bytes that */
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/* will be used for a new FT_Memory object.. */
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/* */
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typedef FT_Pointer (*FT_Memory_CreateFunc)( FT_UInt size,
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FT_Pointer init_data );
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/* a function used to destroy a FT_Memory object */
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typedef void (*FT_Memory_DestroyFunc)( FT_Memory memory );
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/* a structure holding the functions used to describe a given FT_Memory */
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/* implementation.. */
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/* */
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typedef struct FT_Memory_FuncsRec_
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{
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FT_Memory_AllocFunc mem_alloc;
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FT_Memory_FreeFunc mem_free;
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FT_Memory_ReallocFunc mem_realloc;
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FT_Memory_CreateFunc mem_create;
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FT_Memory_DestroyFunc mem_destroy;
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} FT_Memory_FuncsRec, *FT_Memory_Funcs;
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/* a function used to create a new custom FT_Memory object */
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/* */
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FT_BASE_DEF( FT_Memory )
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ft_memory_new( FT_Memory_Funcs mem_funcs,
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FT_Pointer mem_init_data );
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/* a function used to destroy a custom FT_Memory object */
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FT_BASE_DEF( void )
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ft_memory_destroy( FT_Memory memory );
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/* a pointer to the default memory functions used by FreeType in a */
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/* given build. By default, uses the ISO C malloc/free/realloc */
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/* */
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FT_APIVAR( const FT_MemoryFuncs ) ft_memory_funcs_default;
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/* */
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FT_END_HEADER
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#endif /* __FT_SYSTEM_MEMORY_H__ */
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#ifndef __FT_EXCEPT_H__
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#define __FT_EXCEPT_H__
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#include <ft2build.h>
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#include FT_INTERNAL_OBJECTS_H
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FT_BEGIN_HEADER
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typedef struct FT_XHandlerRec_* FT_XHandler;
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typedef struct FT_XHandlerRec_
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{
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FT_XHandler previous;
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ft_jmp_buf jump_buffer;
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volatile FT_Error error;
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FT_Pointer cleanup;
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} FT_XHandlerRec;
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typedef void (*FT_CleanupFunc)( FT_Pointer item,
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FT_Pointer item_data );
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/* the size of a cleanup chunk in bytes is FT_CLEANUP_CHUNK_SIZE*12 + 4 */
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/* this must be a small power of 2 whenever possible.. */
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/* */
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/* with a value of 5, we have a byte size of 64 bytes per chunk.. */
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/* */
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#define FT_CLEANUP_CHUNK_SIZE 5
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typedef struct FT_CleanupItemRec_
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{
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FT_Pointer item;
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FT_CleanupFunc item_func;
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FT_Pointer item_data;
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} FT_CleanupItemRec;
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typedef struct FT_CleanupChunkRec_* FT_CleanupChunk;
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typedef struct FT_CleanupChunkRec_
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{
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FT_CleanupChunk link;
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FT_CleanupItemRec items[ FT_CLEANUP_CHUNK_SIZE ];
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} FT_CleanupChunkRec;
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typedef struct FT_CleanupStackRec_
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{
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FT_CleanupItem top;
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FT_CleanupChunk chunk;
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FT_Memory memory;
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} FT_CleanupStackRec, *FT_CleanupStack;
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FT_BASE_DEF( void )
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ft_cleanup_stack_push( FT_CleanupStack stack,
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FT_Pointer item,
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FT_CleanupFunc item_func,
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FT_Pointer item_data );
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FT_BASE_DEF( void )
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ft_cleanup_stack_pop( FT_CleanupStack stack,
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FT_Int destroy );
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FT_BASE_DEF( FT_Pointer )
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ft_cleanup_stack_peek( FT_CleanupStack stack );
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FT_BASE_DEF( void )
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ft_xhandler_enter( FT_XHandler xhandler,
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FT_Memory memory );
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FT_BASE_DEF( void )
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ft_xhandler_exit( FT_XHandler xhandler );
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FT_END_HEADER
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#endif /* __FT_EXCEPT_H__ */
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#ifndef __FT_OBJECT_H__
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#define __FT_OBJECT_H__
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#include <ft2build.h>
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#include FT_FREETYPE_H
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FT_BEGIN_HEADER
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typedef struct FT_ObjectRec_* FT_Object;
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typedef const struct FT_ClassRec_* FT_Class;
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typedef const struct FT_TypeRec_* FT_Type;
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typedef struct FT_ObjectRec_
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{
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FT_Class clazz;
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FT_Int ref_count;
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} FT_ObjectRec;
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#define FT_OBJECT(x) ((FT_Object)(x))
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#define FT_OBJECT_P(x) ((FT_Object*)(x))
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#define FT_OBJECT__CLASS(x) FT_OBJECT(x)->clazz
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#define FT_OBJECT__REF_COUNT(x) FT_OBJECT(x)->ref_count
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#define FT_OBJECT__MEMORY(x) FT_CLASS__MEMORY(FT_OBJECT(x)->clazz)
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#define FT_OBJECT__LIBRARY(x) FT_CLASS__LIBRARY(FT_OBJECT(x)->clazz)
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typedef void (*FT_Object_InitFunc)( FT_Object object,
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FT_Pointer init_data );
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typedef void (*FT_Object_DoneFunc)( FT_Object object );
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typedef void (*FT_Object_CopyFunc)( FT_Object target,
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FT_Object source );
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typedef struct FT_ClassRec_
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{
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FT_ObjectRec object;
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FT_UInt32 magic;
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FT_Type type;
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FT_Memory memory;
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FT_Library library;
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FT_Pointer info;
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FT_Pointer data;
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FT_UInt obj_size;
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FT_Object_InitFunc obj_init;
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FT_Object_DoneFunc obj_done;
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FT_Object_CopyFunc obj_copy;
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} FT_ClassRec;
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#define FT_CLASS(x) ((FT_Class)(x))
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#define FT_CLASS_P(x) ((FT_Class*)(x))
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#define FT_CLASS__MEMORY(x) FT_CLASS(x)->memory
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#define FT_CLASS__LIBRARY(x) FT_CLASS(x)->library
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#define FT_CLASS__MAGIC(x) FT_CLASS(x)->magic
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#define FT_CLASS__TYPE(x) FT_CLASS(x)->type
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#define FT_CLASS__DATA(x) FT_CLASS(x)->data
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#define FT_CLASS__INFO(x) FT_CLASS(x)->info
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typedef struct FT_TypeRec_
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{
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const char* name;
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FT_Type super;
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FT_UInt class_size;
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FT_Object_InitFunc class_init;
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FT_Object_DoneFunc class_done;
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FT_UInt obj_size;
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FT_Object_InitFunc obj_init;
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FT_Object_DoneFunc obj_done;
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FT_Object_CopyFunc obj_copy;
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} FT_TypeRec;
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#define FT_TYPE(x) ((FT_Type)(x))
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/* check that a handle points to a valid object */
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FT_BASE_DEF( FT_Int )
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ft_object_check( FT_Pointer obj );
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/* check that an object is of a given class */
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FT_BASE_DEF( FT_Int )
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ft_object_is_a( FT_Pointer obj,
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FT_Class clazz );
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FT_BASE_DEF( FT_Object )
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ft_object_new( FT_Class clazz,
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FT_Pointer init_data );
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FT_END_HEADER
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#endif /* __FT_OBJECT_H__ */
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