jpeglsdec.c File Reference

JPEG-LS decoder. More...

#include "libavutil/attributes.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "get_bits.h"
#include "golomb.h"
#include "mathops.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 int	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)

Variables
const FFCodec	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 52 of file jpeglsdec.c.

Referenced by ff_mjpeg_decode_frame_from_buf().

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 155 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 186 of file jpeglsdec.c.

Referenced by ls_decode_line().

ls_decode_line()

static int 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 234 of file jpeglsdec.c.

Referenced by ff_jpegls_decode_picture().

ff_jpegls_decode_picture()

int ff_jpegls_decode_picture

(

MJpegDecodeContext *

s

)

Definition at line 357 of file jpeglsdec.c.

Referenced by ff_mjpeg_decode_sos().

Variable Documentation

ff_jpegls_decoder

const FFCodec ff_jpegls_decoder

Initial value:

= {
    .p.name         = "jpegls",
    CODEC_LONG_NAME("JPEG-LS"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_JPEGLS,
    .priv_data_size = sizeof(MJpegDecodeContext),
    .init           = ff_mjpeg_decode_init,
    .close          = ff_mjpeg_decode_end,
    FF_CODEC_DECODE_CB(ff_mjpeg_decode_frame),
    .p.capabilities = AV_CODEC_CAP_DR1,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 584 of file jpeglsdec.c.