heatshrink_encoder.c File Reference

#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include "compression/heatshrink_lib/heatshrink_encoder.h"

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Classes
struct	output_info

Macros
#define	LOG(...)
#define	ASSERT(X)
#define	MATCH_NOT_FOUND   ((uint16_t)-1)

Enumerations
enum	HSE_state {   HSES_NOT_FULL , HSES_FILLED , HSES_SEARCH , HSES_YIELD_TAG_BIT ,   HSES_YIELD_LITERAL , HSES_YIELD_BR_INDEX , HSES_YIELD_BR_LENGTH , HSES_SAVE_BACKLOG ,   HSES_FLUSH_BITS , HSES_DONE }
enum	{ FLAG_IS_FINISHING = 0x01 }

Functions
static uint16_t	get_input_offset (heatshrink_encoder *hse)
static uint16_t	get_input_buffer_size (heatshrink_encoder *hse)
static uint16_t	get_lookahead_size (heatshrink_encoder *hse)
static void	add_tag_bit (heatshrink_encoder *hse, output_info *oi, uint8_t tag)
static int	can_take_byte (output_info *oi)
static int	is_finishing (heatshrink_encoder *hse)
static void	save_backlog (heatshrink_encoder *hse)
static void	push_bits (heatshrink_encoder *hse, uint8_t count, uint8_t bits, output_info *oi)
static uint8_t	push_outgoing_bits (heatshrink_encoder *hse, output_info *oi)
static void	push_literal_byte (heatshrink_encoder *hse, output_info *oi)
void	heatshrink_encoder_reset (heatshrink_encoder *hse)
HSE_sink_res	heatshrink_encoder_sink (heatshrink_encoder *hse, uint8_t *in_buf, size_t size, size_t *input_size)
static uint16_t	find_longest_match (heatshrink_encoder *hse, uint16_t start, uint16_t end, const uint16_t maxlen, uint16_t *match_length)
static void	do_indexing (heatshrink_encoder *hse)
static HSE_state	st_step_search (heatshrink_encoder *hse)
static HSE_state	st_yield_tag_bit (heatshrink_encoder *hse, output_info *oi)
static HSE_state	st_yield_literal (heatshrink_encoder *hse, output_info *oi)
static HSE_state	st_yield_br_index (heatshrink_encoder *hse, output_info *oi)
static HSE_state	st_yield_br_length (heatshrink_encoder *hse, output_info *oi)
static HSE_state	st_save_backlog (heatshrink_encoder *hse)
static HSE_state	st_flush_bit_buffer (heatshrink_encoder *hse, output_info *oi)
HSE_poll_res	heatshrink_encoder_poll (heatshrink_encoder *hse, uint8_t *out_buf, size_t out_buf_size, size_t *output_size)
HSE_finish_res	heatshrink_encoder_finish (heatshrink_encoder *hse)

Macro Definition Documentation

ASSERT

#define ASSERT

(

X

)

Value:

/* no-op */

LOG

#define LOG

(

...

)

Value:

/* no-op */

MATCH_NOT_FOUND

#define MATCH_NOT_FOUND   ((uint16_t)-1)

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
FLAG_IS_FINISHING

HSE_state

enum HSE_state

Enumerator
HSES_NOT_FULL
HSES_FILLED
HSES_SEARCH
HSES_YIELD_TAG_BIT
HSES_YIELD_LITERAL
HSES_YIELD_BR_INDEX
HSES_YIELD_BR_LENGTH
HSES_SAVE_BACKLOG
HSES_FLUSH_BITS
HSES_DONE

Function Documentation

add_tag_bit()

void add_tag_bit ( heatshrink_encoder * hse, output_info * oi, uint8_t tag )

static

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can_take_byte()

int can_take_byte ( output_info * oi )

static

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do_indexing()

void do_indexing ( heatshrink_encoder * hse )

static

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find_longest_match()

uint16_t find_longest_match ( heatshrink_encoder * hse, uint16_t start, uint16_t end, const uint16_t maxlen, uint16_t * match_length )

static

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get_input_buffer_size()

uint16_t get_input_buffer_size ( heatshrink_encoder * hse )

static

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get_input_offset()

uint16_t get_input_offset ( heatshrink_encoder * hse )

static

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get_lookahead_size()

uint16_t get_lookahead_size ( heatshrink_encoder * hse )

static

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heatshrink_encoder_finish()

HSE_finish_res heatshrink_encoder_finish

(

heatshrink_encoder *

hse

)

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heatshrink_encoder_poll()

HSE_poll_res heatshrink_encoder_poll	(	heatshrink_encoder *	hse,
		uint8_t *	out_buf,
		size_t	out_buf_size,
		size_t *	output_size )

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heatshrink_encoder_reset()

void heatshrink_encoder_reset

(

heatshrink_encoder *

hse

)

heatshrink_encoder_sink()

HSE_sink_res heatshrink_encoder_sink	(	heatshrink_encoder *	hse,
		uint8_t *	in_buf,
		size_t	size,
		size_t *	input_size )

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is_finishing()

int is_finishing ( heatshrink_encoder * hse )

static

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push_bits()

void push_bits ( heatshrink_encoder * hse, uint8_t count, uint8_t bits, output_info * oi )

static

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push_literal_byte()

void push_literal_byte ( heatshrink_encoder * hse, output_info * oi )

static

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push_outgoing_bits()

uint8_t push_outgoing_bits ( heatshrink_encoder * hse, output_info * oi )

static

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save_backlog()

void save_backlog ( heatshrink_encoder * hse )

static

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st_flush_bit_buffer()

HSE_state st_flush_bit_buffer ( heatshrink_encoder * hse, output_info * oi )

static

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st_save_backlog()

HSE_state st_save_backlog ( heatshrink_encoder * hse )

static

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st_step_search()

HSE_state st_step_search ( heatshrink_encoder * hse )

static

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st_yield_br_index()

HSE_state st_yield_br_index ( heatshrink_encoder * hse, output_info * oi )

static

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st_yield_br_length()

HSE_state st_yield_br_length ( heatshrink_encoder * hse, output_info * oi )

static

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st_yield_literal()

HSE_state st_yield_literal ( heatshrink_encoder * hse, output_info * oi )

static

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st_yield_tag_bit()

HSE_state st_yield_tag_bit ( heatshrink_encoder * hse, output_info * oi )

static

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