ftzopen.c File Reference

#include "ftzopen.h"
#include <FT_INTERNAL_MEMORY_H>
#include <FT_INTERNAL_STREAM_H>
#include <FT_INTERNAL_DEBUG_H>

Go to the source code of this file.

Macros
#define	FTLZW_STACK_PUSH(c)

Functions
	ft_lzwstate_done (FT_LzwState state)
static FT_Int32	ft_lzwstate_get_code (FT_LzwState state)
	ft_lzwstate_init (FT_LzwState state, FT_Stream source)
	ft_lzwstate_io (FT_LzwState state, FT_Byte *buffer, FT_ULong out_size)
static int	ft_lzwstate_prefix_grow (FT_LzwState state)
static int	ft_lzwstate_refill (FT_LzwState state)
	ft_lzwstate_reset (FT_LzwState state)
static int	ft_lzwstate_stack_grow (FT_LzwState state)

Macro Definition Documentation

#define FTLZW_STACK_PUSH

(

c

)

Value:

FT_BEGIN_STMNT                                     \
    if ( state->stack_top >= state->stack_size &&    \
         ft_lzwstate_stack_grow( state ) < 0   )     \
      goto Eof;                                      \
                                                     \
    state->stack[state->stack_top++] = (FT_Byte)(c); \
  FT_END_STMNT

Definition at line 236 of file ftzopen.c.

Referenced by ft_lzwstate_io().

Function Documentation

ft_lzwstate_done

(

FT_LzwState

state

)

Definition at line 219 of file ftzopen.c.

References FT_FREE, ft_lzwstate_reset(), FT_ZERO, and NULL.

static FT_Int32 ft_lzwstate_get_code ( FT_LzwState  state )

static

Definition at line 54 of file ftzopen.c.

References FT_LzwStateRec_::buf_clear, FT_LzwStateRec_::buf_offset, FT_LzwStateRec_::buf_size, FT_LzwStateRec_::buf_tab, FT_LzwStateRec_::free_bits, FT_LzwStateRec_::free_ent, ft_lzwstate_refill(), LZW_INIT_BITS, LZW_MASK, FT_LzwStateRec_::max_bits, FT_LzwStateRec_::max_free, and FT_LzwStateRec_::num_bits.

Referenced by ft_lzwstate_io().

ft_lzwstate_init	(	FT_LzwState	state,
		FT_Stream	source
	)

Definition at line 199 of file ftzopen.c.

References ft_lzwstate_reset(), FT_ZERO, and NULL.

ft_lzwstate_io	(	FT_LzwState	state,
		FT_Byte *	buffer,
		FT_ULong	out_size
	)

Definition at line 247 of file ftzopen.c.

References FT_ASSERT, FT_LZW_PHASE_CODE, FT_LZW_PHASE_EOF, FT_LZW_PHASE_STACK, FT_LZW_PHASE_START, ft_lzwstate_get_code(), ft_lzwstate_prefix_grow(), FT_Stream_Seek(), FT_Stream_TryRead(), FTLZW_STACK_PUSH, LZW_BIT_MASK, LZW_BLOCK_MASK, LZW_CLEAR, LZW_FIRST, LZW_INIT_BITS, and LZW_MAX_BITS.

static int ft_lzwstate_prefix_grow ( FT_LzwState  state )

static

Definition at line 147 of file ftzopen.c.

References error, FT_MEM_MOVE, FT_REALLOC_MULT, FT_LzwStateRec_::memory, FT_LzwStateRec_::prefix, FT_LzwStateRec_::prefix_size, sizeof(), and FT_LzwStateRec_::suffix.

Referenced by ft_lzwstate_io().

static int ft_lzwstate_refill ( FT_LzwState  state )

static

Definition at line 28 of file ftzopen.c.

References FT_LzwStateRec_::buf_offset, FT_LzwStateRec_::buf_size, FT_LzwStateRec_::buf_tab, FT_LzwStateRec_::buf_total, FT_BOOL, FT_Stream_TryRead(), FT_LzwStateRec_::in_eof, FT_LzwStateRec_::num_bits, and FT_LzwStateRec_::source.

Referenced by ft_lzwstate_get_code().

ft_lzwstate_reset

(

FT_LzwState

state

)

Definition at line 185 of file ftzopen.c.

References FT_LZW_PHASE_START, and LZW_INIT_BITS.

Referenced by ft_lzwstate_done(), and ft_lzwstate_init().

static int ft_lzwstate_stack_grow ( FT_LzwState  state )

static

Definition at line 110 of file ftzopen.c.

References error, FT_RENEW_ARRAY, LZW_MAX_BITS, FT_LzwStateRec_::memory, NULL, FT_LzwStateRec_::stack, FT_LzwStateRec_::stack_0, FT_LzwStateRec_::stack_size, and FT_LzwStateRec_::stack_top.