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

Macros
#define	OFFSET(x)   offsetof(JPEGLSContext, x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Functions
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)

Variables
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

OFFSET

#define OFFSET

(

x

)

offsetof(JPEGLSContext, x)

Definition at line 448 of file jpeglsenc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 449 of file jpeglsenc.c.

Function Documentation

ls_encode_regular()

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

inlinestatic

Encode error from regular symbol.

Definition at line 47 of file jpeglsenc.c.

Referenced by ls_encode_line().

ls_encode_runterm()

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

inlinestatic

Encode error from run termination.

Definition at line 75 of file jpeglsenc.c.

Referenced by ls_encode_line().

ls_encode_run()

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

inlinestatic

Encode run value as specified by JPEG-LS standard.

Definition at line 108 of file jpeglsenc.c.

Referenced by ls_encode_line().

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  )

inlinestatic

Encode one line of image.

Definition at line 130 of file jpeglsenc.c.

Referenced by encode_picture_ls().

ls_store_lse()

static void ls_store_lse ( JLSState *  state, PutBitContext *  pb  )

static

Definition at line 233 of file jpeglsenc.c.

Referenced by encode_picture_ls().

encode_picture_ls()

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

static

Definition at line 256 of file jpeglsenc.c.

encode_init_ls()

static av_cold int encode_init_ls ( AVCodecContext *  ctx )

static

Definition at line 428 of file jpeglsenc.c.

Variable Documentation

options

const AVOption options[]

static

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},
}

Definition at line 450 of file jpeglsenc.c.

jpegls_class

const AVClass jpegls_class

static

Initial value:

= {
    .class_name = "jpegls",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 459 of file jpeglsenc.c.

ff_jpegls_encoder

AVCodec ff_jpegls_encoder

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(JPEGLSContext),
    .priv_class     = &jpegls_class,
    .init           = encode_init_ls,
    .capabilities   = AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_INTRA_ONLY,
    .encode2        = encode_picture_ls,
    .pix_fmts       = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_BGR24, AV_PIX_FMT_RGB24,
        AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
        AV_PIX_FMT_NONE
    },
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE |
                      FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 466 of file jpeglsenc.c.