jpeglsenc.c File Reference

JPEG-LS encoder. More...

#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "encode.h"
#include "get_bits.h"
#include "put_bits.h"
#include "put_golomb.h"
#include "mathops.h"
#include "mjpeg.h"
#include "jpegls.h"

Go to the source code of this file.

Data Structures
struct	JPEGLSContext

Macros
#define	UNCHECKED_BITSTREAM_READER   1
#define	OFFSET(x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Functions
static void	put_marker_byteu (PutByteContext *pb, enum JpegMarker code)
static void	ls_encode_regular (JLSState *state, PutBitContext *pb, int Q, int err)
	Encode error from regular symbol.
static void	ls_encode_runterm (JLSState *state, PutBitContext *pb, int RItype, int err, int limit_add)
	Encode error from run termination.
static void	ls_encode_run (JLSState *state, PutBitContext *pb, int run, int comp, int trail)
	Encode run value as specified by JPEG-LS standard.
static void	ls_encode_line (JLSState *state, PutBitContext *pb, void *tmp, const void *in, int last2, int w, int stride, int comp, int bits)
	Encode one line of image.
static void	ls_store_lse (JLSState *state, PutByteContext *pb)
static int	encode_picture_ls (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
static av_cold int	encode_jpegls_init (AVCodecContext *avctx)
static av_cold int	encode_jpegls_close (AVCodecContext *avctx)

Variables
static const AVOption	options []
static const AVClass	jpegls_class
const FFCodec	ff_jpegls_encoder

Detailed Description

JPEG-LS encoder.

Definition in file jpeglsenc.c.

Macro Definition Documentation

UNCHECKED_BITSTREAM_READER

#define UNCHECKED_BITSTREAM_READER   1

Definition at line 28 of file jpeglsenc.c.

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(JPEGLSContext, x)

Definition at line 457 of file jpeglsenc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 458 of file jpeglsenc.c.

Function Documentation

put_marker_byteu()

static void put_marker_byteu ( PutByteContext * pb, enum JpegMarker code )

inlinestatic

Definition at line 52 of file jpeglsenc.c.

Referenced by encode_picture_ls(), and ls_store_lse().

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 61 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 89 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 122 of file jpeglsenc.c.

Referenced by ls_encode_line().

ls_encode_line()

static void ls_encode_line ( JLSState * state, PutBitContext * pb, void * tmp, const void * in, int last2, int w, int stride, int comp, int bits )

inlinestatic

Encode one line of image.

Definition at line 144 of file jpeglsenc.c.

Referenced by encode_picture_ls().

ls_store_lse()

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

static

Definition at line 249 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 272 of file jpeglsenc.c.

encode_jpegls_init()

static av_cold int encode_jpegls_init ( AVCodecContext * avctx )

static

Definition at line 422 of file jpeglsenc.c.

encode_jpegls_close()

static av_cold int encode_jpegls_close ( AVCodecContext * avctx )

static

Definition at line 449 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, .unit = "pred" },
    { "left",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, .unit = "pred" },
    { "plane",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, .unit = "pred" },
    { "median", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, .unit = "pred" },
 
    { NULL},
}

Definition at line 459 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 468 of file jpeglsenc.c.

ff_jpegls_encoder

const FFCodec ff_jpegls_encoder

Initial value:

= {
    .p.name         = "jpegls",
    CODEC_LONG_NAME("JPEG-LS"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_JPEGLS,
    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
                      AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
    .priv_data_size = sizeof(JPEGLSContext),
    .p.priv_class   = &jpegls_class,
    .init           = encode_jpegls_init,
    FF_CODEC_ENCODE_CB(encode_picture_ls),
    .close          = encode_jpegls_close,
    CODEC_PIXFMTS(AV_PIX_FMT_BGR24, AV_PIX_FMT_RGB24,
                  AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16),
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 475 of file jpeglsenc.c.