libavcodec/jpeglsdec.c File Reference

JPEG-LS decoder. More...

#include "avcodec.h"
#include "get_bits.h"
#include "golomb.h"
#include "mathops.h"
#include "mjpeg.h"
#include "mjpegdec.h"
#include "jpegls.h"
#include "jpeglsdec.h"

Go to the source code of this file.

Functions
int	ff_jpegls_decode_lse (MJpegDecodeContext *s)
	Decode LSE block with initialization parameters.
static int	ls_get_code_regular (GetBitContext *gb, JLSState *state, int Q)
	Get context-dependent Golomb code, decode it and update context.
static int	ls_get_code_runterm (GetBitContext *gb, JLSState *state, int RItype, int limit_add)
	Get Golomb code, decode it and update state for run termination.
static void	ls_decode_line (JLSState *state, MJpegDecodeContext *s, void *last, void *dst, int last2, int w, int stride, int comp, int bits)
	Decode one line of image.
int	ff_jpegls_decode_picture (MJpegDecodeContext *s, int near, int point_transform, int ilv)
Variables
AVCodec	ff_jpegls_decoder

---

Detailed Description

JPEG-LS decoder.

Definition in file jpeglsdec.c.

---

Function Documentation

int ff_jpegls_decode_lse

(

MJpegDecodeContext *

s

)

Decode LSE block with initialization parameters.

Definition at line 52 of file jpeglsdec.c.

Referenced by ff_mjpeg_decode_frame().

int ff_jpegls_decode_picture	(	MJpegDecodeContext *	s,
		int	near,
		int	point_transform,
		int	ilv
	)

Definition at line 262 of file jpeglsdec.c.

Referenced by ff_mjpeg_decode_sos().

static void ls_decode_line	(	JLSState *	state,
		MJpegDecodeContext *	s,
		void *	last,
		void *	dst,
		int	last2,
		int	w,
		int	stride,
		int	comp,
		int	bits
	)			[inline, static]

Decode one line of image.

Definition at line 157 of file jpeglsdec.c.

Referenced by ff_jpegls_decode_picture().

static int ls_get_code_regular	(	GetBitContext *	gb,
		JLSState *	state,
		int	Q
	)			[inline, static]

Get context-dependent Golomb code, decode it and update context.

Definition at line 90 of file jpeglsdec.c.

Referenced by ls_decode_line().

static int ls_get_code_runterm	(	GetBitContext *	gb,
		JLSState *	state,
		int	RItype,
		int	limit_add
	)			[inline, static]

Get Golomb code, decode it and update state for run termination.

Definition at line 118 of file jpeglsdec.c.

Referenced by ls_decode_line().

---

Variable Documentation

AVCodec ff_jpegls_decoder

Initial value:

 {
    .name           = "jpegls",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = CODEC_ID_JPEGLS,
    .priv_data_size = sizeof(MJpegDecodeContext),
    .init           = ff_mjpeg_decode_init,
    .close          = ff_mjpeg_decode_end,
    .decode         = ff_mjpeg_decode_frame,
    .capabilities   = CODEC_CAP_DR1,
    .long_name = NULL_IF_CONFIG_SMALL("JPEG-LS"),
}

Definition at line 370 of file jpeglsdec.c.