jpeglsdec.c File Reference

JPEG-LS decoder. More...

#include "avcodec.h"
#include "get_bits.h"
#include "golomb.h"
#include "internal.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. More...
static int	ls_get_code_regular (GetBitContext *gb, JLSState *state, int Q)
	Get context-dependent Golomb code, decode it and update context. More...
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. More...
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. More...
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

ff_jpegls_decode_lse()

int ff_jpegls_decode_lse

(

MJpegDecodeContext *

s

)

Decode LSE block with initialization parameters.

Definition at line 51 of file jpeglsdec.c.

Referenced by ff_mjpeg_decode_frame().

ls_get_code_regular()

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

inlinestatic

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

Definition at line 148 of file jpeglsdec.c.

Referenced by ls_decode_line().

ls_get_code_runterm()

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

inlinestatic

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

Definition at line 179 of file jpeglsdec.c.

Referenced by ls_decode_line().

ls_decode_line()

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

inlinestatic

Decode one line of image.

Definition at line 225 of file jpeglsdec.c.

Referenced by ff_jpegls_decode_picture().

ff_jpegls_decode_picture()

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

Definition at line 346 of file jpeglsdec.c.

Referenced by ff_mjpeg_decode_sos().

Variable Documentation

ff_jpegls_decoder

AVCodec ff_jpegls_decoder

Initial value:

= {
    .name           = "jpegls",
    .long_name      = NULL_IF_CONFIG_SMALL("JPEG-LS"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_JPEGLS,
    .priv_data_size = sizeof(MJpegDecodeContext),
    .init           = ff_mjpeg_decode_init,
    .close          = ff_mjpeg_decode_end,
    .decode         = ff_mjpeg_decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1,
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
}

Definition at line 533 of file jpeglsdec.c.