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 261 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 156 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 89 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 117 of file jpeglsdec.c.

Referenced by ls_decode_line().


Variable Documentation

Initial value:

 {
    .name           = "jpegls",
    .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   = CODEC_CAP_DR1,
    .long_name      = NULL_IF_CONFIG_SMALL("JPEG-LS"),
}

Definition at line 369 of file jpeglsdec.c.


Generated on Fri Oct 26 02:50:06 2012 for FFmpeg by  doxygen 1.5.8