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jpeglsenc.c File Reference

JPEG-LS encoder. More...

#include "avcodec.h"
#include "get_bits.h"
#include "put_bits.h"
#include "golomb.h"
#include "internal.h"
#include "mathops.h"
#include "mjpeg.h"
#include "mjpegenc.h"
#include "jpegls.h"

Go to the source code of this file.

Data Structures

struct  JPEGLSContext


#define OFFSET(x)   offsetof(JPEGLSContext, x)


static void ls_encode_regular (JLSState *state, PutBitContext *pb, int Q, int err)
 Encode error from regular symbol. More...
static void ls_encode_runterm (JLSState *state, PutBitContext *pb, int RItype, int err, int limit_add)
 Encode error from run termination. More...
static void ls_encode_run (JLSState *state, PutBitContext *pb, int run, int comp, int trail)
 Encode run value as specified by JPEG-LS standard. More...
static void ls_encode_line (JLSState *state, PutBitContext *pb, void *last, void *cur, int last2, int w, int stride, int comp, int bits)
 Encode one line of image. More...
static void ls_store_lse (JLSState *state, PutBitContext *pb)
static int encode_picture_ls (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
static av_cold int encode_init_ls (AVCodecContext *ctx)


static const AVOption options []
static const AVClass jpegls_class
AVCodec ff_jpegls_encoder

Detailed Description

JPEG-LS encoder.

Definition in file jpeglsenc.c.

Macro Definition Documentation

#define OFFSET (   x)    offsetof(JPEGLSContext, x)

Definition at line 448 of file jpeglsenc.c.

Definition at line 449 of file jpeglsenc.c.

Function Documentation

static void ls_encode_regular ( JLSState state,
PutBitContext pb,
int  Q,
int  err 

Encode error from regular symbol.

Definition at line 47 of file jpeglsenc.c.

Referenced by ls_encode_line().

static void ls_encode_runterm ( JLSState state,
PutBitContext pb,
int  RItype,
int  err,
int  limit_add 

Encode error from run termination.

Definition at line 75 of file jpeglsenc.c.

Referenced by ls_encode_line().

static void ls_encode_run ( JLSState state,
PutBitContext pb,
int  run,
int  comp,
int  trail 

Encode run value as specified by JPEG-LS standard.

Definition at line 108 of file jpeglsenc.c.

Referenced by ls_encode_line().

static void ls_encode_line ( JLSState state,
PutBitContext pb,
void last,
void cur,
int  last2,
int  w,
int  stride,
int  comp,
int  bits 

Encode one line of image.

Definition at line 130 of file jpeglsenc.c.

Referenced by encode_picture_ls().

static void ls_store_lse ( JLSState state,
PutBitContext pb 

Definition at line 233 of file jpeglsenc.c.

Referenced by encode_picture_ls().

static int encode_picture_ls ( AVCodecContext avctx,
AVPacket pkt,
const AVFrame pict,
int got_packet 

Definition at line 256 of file jpeglsenc.c.

static av_cold int encode_init_ls ( AVCodecContext ctx)

Definition at line 428 of file jpeglsenc.c.

Variable Documentation

const AVOption options[]
Initial value:
= {
{ "pred", "Prediction method", OFFSET(pred), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, VE, "pred" },
{ "left", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "pred" },
{ "plane", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "pred" },
{ "median", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "pred" },
{ NULL},
#define NULL
Definition: coverity.c:32
#define VE
Definition: jpeglsenc.c:449
static const float pred[4]
Definition: siprdata.h:259
#define OFFSET(x)
Definition: jpeglsenc.c:448

Definition at line 450 of file jpeglsenc.c.

const AVClass jpegls_class
Initial value:
= {
.class_name = "jpegls",
.item_name = av_default_item_name,
.option = options,
Definition: version.h:85
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:191
static const AVOption options[]
Definition: jpeglsenc.c:450

Definition at line 459 of file jpeglsenc.c.

AVCodec ff_jpegls_encoder
Initial value:
= {
.name = "jpegls",
.priv_data_size = sizeof(JPEGLSContext),
.priv_class = &jpegls_class,
.encode2 = encode_picture_ls,
.pix_fmts = (const enum AVPixelFormat[]) {
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:68
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
Codec is intra only.
Definition: avcodec.h:1054
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:40
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static int encode_picture_ls(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
Definition: jpeglsenc.c:256
Codec supports frame-level multithreading.
Definition: avcodec.h:1024
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:363
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:69
static const AVClass jpegls_class
Definition: jpeglsenc.c:459
static av_cold int encode_init_ls(AVCodecContext *ctx)
Definition: jpeglsenc.c:428
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
Y , 8bpp.
Definition: pixfmt.h:74
Pixel format.
Definition: pixfmt.h:64

Definition at line 466 of file jpeglsenc.c.