pjpeg.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <stdint.h>
#include <string.h>
#include "pjpeg.h"
#include "image_u8.h"
#include "image_u8x3.h"
#include "debug_print.h"

Include dependency graph for pjpeg.c:

Go to the source code of this file.

Classes
struct	bit_decoder
struct	pjpeg_decode_state
struct	pjpeg_huffman_code

Functions
static uint32_t	bd_consume_bits (struct bit_decoder *bd, int nbits)
static void	bd_discard_bytes (struct bit_decoder *bd, int nbytes)
static void	bd_discard_to_byte_boundary (struct bit_decoder *bd)
static void	bd_ensure (struct bit_decoder *bd, int nbits)
static uint32_t	bd_get_offset (struct bit_decoder *bd)
static int	bd_has_more (struct bit_decoder *bd)
static uint32_t	bd_peek_bits (struct bit_decoder *bd, int nbits)
static uint8_t	clamp_u8 (int32_t v)
static uint8_t	clampd (double v)
static uint8_t	max_u8 (uint8_t a, uint8_t b)
pjpeg_t *	pjpeg_create_from_buffer (uint8_t *buf, int buflen, uint32_t flags, int *error)
pjpeg_t *	pjpeg_create_from_file (const char *path, uint32_t flags, int *error)
static int	pjpeg_decode_buffer (struct pjpeg_decode_state *pjd)
void	pjpeg_destroy (pjpeg_t *pj)
void	pjpeg_idct_2D_double (int32_t in[64], uint8_t *out, uint32_t outstride)
void	pjpeg_idct_2D_nanojpeg (int32_t in[64], uint8_t *out, uint32_t outstride)
void	pjpeg_idct_2D_u32 (int32_t in[64], uint8_t *out, uint32_t outstride)
image_u8_t *	pjpeg_to_u8_baseline (pjpeg_t *pj)
image_u8x3_t *	pjpeg_to_u8x3_baseline (pjpeg_t *pj)

Variables
static uint8_t	mjpeg_dht []
static const char	ZZ [64]

Function Documentation

bd_consume_bits()

static uint32_t bd_consume_bits ( struct bit_decoder *  bd, int  nbits  )

inlinestatic

Definition at line 209 of file pjpeg.c.

bd_discard_bytes()

static void bd_discard_bytes ( struct bit_decoder *  bd, int  nbytes  )

inlinestatic

Definition at line 223 of file pjpeg.c.

bd_discard_to_byte_boundary()

static void bd_discard_to_byte_boundary ( struct bit_decoder *  bd )

inlinestatic

Definition at line 236 of file pjpeg.c.

bd_ensure()

static void bd_ensure ( struct bit_decoder *  bd, int  nbits  )

inlinestatic

Definition at line 175 of file pjpeg.c.

bd_get_offset()

static uint32_t bd_get_offset ( struct bit_decoder *  bd )

inlinestatic

Definition at line 241 of file pjpeg.c.

bd_has_more()

static int bd_has_more ( struct bit_decoder *  bd )

inlinestatic

Definition at line 229 of file pjpeg.c.

bd_peek_bits()

static uint32_t bd_peek_bits ( struct bit_decoder *  bd, int  nbits  )

inlinestatic

Definition at line 202 of file pjpeg.c.

clamp_u8()

static uint8_t clamp_u8 ( int32_t  v )

inlinestatic

Definition at line 728 of file pjpeg.c.

clampd()

static uint8_t clampd ( double  v )

inlinestatic

Definition at line 718 of file pjpeg.c.

max_u8()

static uint8_t max_u8 ( uint8_t  a, uint8_t  b  )

inlinestatic

Definition at line 144 of file pjpeg.c.

pjpeg_create_from_buffer()

pjpeg_t* pjpeg_create_from_buffer	(	uint8_t *	buf,
		int	buflen,
		uint32_t	flags,
		int *	error
	)

Definition at line 857 of file pjpeg.c.

pjpeg_create_from_file()

pjpeg_t* pjpeg_create_from_file	(	const char *	path,
		uint32_t	flags,
		int *	error
	)

Definition at line 825 of file pjpeg.c.

pjpeg_decode_buffer()

static int pjpeg_decode_buffer ( struct pjpeg_decode_state *  pjd )

static

Definition at line 246 of file pjpeg.c.

pjpeg_destroy()

void pjpeg_destroy

(

pjpeg_t *

pj

)

Definition at line 689 of file pjpeg.c.

pjpeg_idct_2D_double()

void pjpeg_idct_2D_double	(	int32_t	in[64],
		uint8_t *	out,
		uint32_t	outstride
	)

Definition at line 238 of file pjpeg-idct.c.

pjpeg_idct_2D_nanojpeg()

void pjpeg_idct_2D_nanojpeg	(	int32_t	in[64],
		uint8_t *	out,
		uint32_t	outstride
	)

Definition at line 377 of file pjpeg-idct.c.

pjpeg_idct_2D_u32()

void pjpeg_idct_2D_u32	(	int32_t	in[64],
		uint8_t *	out,
		uint32_t	outstride
	)

Definition at line 176 of file pjpeg-idct.c.

pjpeg_to_u8_baseline()

image_u8_t* pjpeg_to_u8_baseline

(

pjpeg_t *

pj

)

Definition at line 703 of file pjpeg.c.

pjpeg_to_u8x3_baseline()

image_u8x3_t* pjpeg_to_u8x3_baseline

(

pjpeg_t *

pj

)

Definition at line 738 of file pjpeg.c.

Variable Documentation

mjpeg_dht

uint8_t mjpeg_dht[]

static

Definition at line 86 of file pjpeg.c.

ZZ

const char ZZ[64]

static

Initial value:

= { 0,   1,  8, 16,  9,  2,  3, 10,
                             17, 24, 32, 25, 18, 11,  4,  5,
                             12, 19, 26, 33, 40, 48, 41, 34,
                             27, 20, 13,  6,  7, 14, 21, 28,
                             35, 42, 49, 56, 57, 50, 43, 36,
                             29, 22, 15, 23, 30, 37, 44, 51,
                             58, 59, 52, 45, 38, 31, 39, 46,
                             53, 60, 61, 54, 47, 55, 62, 63 }

Definition at line 150 of file pjpeg.c.