jpeg2000dec.c File Reference

JPEG 2000 image decoder. More...

#include <inttypes.h>
#include <math.h>
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "decode.h"
#include "internal.h"
#include "thread.h"
#include "jpeg2000.h"
#include "jpeg2000dsp.h"
#include "profiles.h"
#include "jpeg2000dec.h"
#include "jpeg2000htdec.h"

Go to the source code of this file.

Macros
#define	JP2_SIG_TYPE   0x6A502020
#define	JP2_SIG_VALUE   0x0D0A870A
#define	JP2_CODESTREAM   0x6A703263
#define	JP2_HEADER   0x6A703268
#define	HAD_COC   0x01
#define	HAD_QCC   0x02
#define	HT_MIXED   0x80
#define	RGB_PIXEL_FORMATS   AV_PIX_FMT_PAL8,AV_PIX_FMT_RGB24,AV_PIX_FMT_RGBA,AV_PIX_FMT_RGB48,AV_PIX_FMT_RGBA64
#define	GRAY_PIXEL_FORMATS   AV_PIX_FMT_GRAY8,AV_PIX_FMT_GRAY8A,AV_PIX_FMT_GRAY16,AV_PIX_FMT_YA16
#define	YUV_PIXEL_FORMATS
#define	XYZ_PIXEL_FORMATS   AV_PIX_FMT_XYZ12
#define	WRITE_FRAME(D, PIXEL)
#define	OFFSET(x)
#define	VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Enumerations
enum	HT_PLHD_STATUS { HT_PLHD_OFF , HT_PLHD_ON }

Functions
static int	get_bits (Jpeg2000DecoderContext *s, int n)
static void	jpeg2000_flush (Jpeg2000DecoderContext *s)
static int	tag_tree_decode (Jpeg2000DecoderContext *s, Jpeg2000TgtNode *node, int threshold)
static int	pix_fmt_match (enum AVPixelFormat pix_fmt, int components, int bpc, uint32_t log2_chroma_wh, int pal8)
static int	get_siz (Jpeg2000DecoderContext *s)
static int	get_cap (Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c)
static int	get_cox (Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c)
static int	get_cod (Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c, const uint8_t *properties)
static int	get_coc (Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c, uint8_t *properties)
static int	get_rgn (Jpeg2000DecoderContext *s, int n)
static int	get_qcx (Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q)
static int	get_qcd (Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q, const uint8_t *properties)
static int	get_qcc (Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q, uint8_t *properties)
static int	get_poc (Jpeg2000DecoderContext *s, int size, Jpeg2000POC *p)
static int	get_sot (Jpeg2000DecoderContext *s, int n)
static int	read_crg (Jpeg2000DecoderContext *s, int n)
static int	read_cpf (Jpeg2000DecoderContext *s, int n)
static int	get_tlm (Jpeg2000DecoderContext *s, int n)
static int	get_plt (Jpeg2000DecoderContext *s, int n)
static int	get_ppm (Jpeg2000DecoderContext *s, int n)
static int	get_ppt (Jpeg2000DecoderContext *s, int n)
static int	init_tile (Jpeg2000DecoderContext *s, int tileno)
static int	getnpasses (Jpeg2000DecoderContext *s)
static int	getlblockinc (Jpeg2000DecoderContext *s)
static void	select_header (Jpeg2000DecoderContext *s, const Jpeg2000Tile *tile, int *tp_index)
static void	select_stream (Jpeg2000DecoderContext *s, const Jpeg2000Tile *tile, int *tp_index, const Jpeg2000CodingStyle *codsty)
static int	jpeg2000_decode_packet (Jpeg2000DecoderContext *s, Jpeg2000Tile *tile, int *tp_index, const Jpeg2000CodingStyle *codsty, Jpeg2000ResLevel *rlevel, int precno, int layno, const uint8_t *expn, int numgbits)
static int	jpeg2000_decode_packets_po_iteration (Jpeg2000DecoderContext *s, Jpeg2000Tile *tile, int RSpoc, int CSpoc, int LYEpoc, int REpoc, int CEpoc, int Ppoc, int *tp_index)
static int	jpeg2000_decode_packets (Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
static void	decode_sigpass (Jpeg2000T1Context *t1, int width, int height, int bpno, int bandno, int vert_causal_ctx_csty_symbol)
static void	decode_refpass (Jpeg2000T1Context *t1, int width, int height, int bpno, int vert_causal_ctx_csty_symbol)
static void	decode_clnpass (const Jpeg2000DecoderContext *s, Jpeg2000T1Context *t1, int width, int height, int bpno, int bandno, int seg_symbols, int vert_causal_ctx_csty_symbol)
static int	decode_cblk (const Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty, Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk, int width, int height, int bandpos, uint8_t roi_shift, const int M_b)
static void	dequantization_float (int x, int y, Jpeg2000Cblk *cblk, Jpeg2000Component *comp, Jpeg2000T1Context *t1, Jpeg2000Band *band, const int M_b)
static void	dequantization_int (int x, int y, Jpeg2000Cblk *cblk, Jpeg2000Component *comp, Jpeg2000T1Context *t1, Jpeg2000Band *band, const int M_b)
static void	dequantization_int_97 (int x, int y, Jpeg2000Cblk *cblk, Jpeg2000Component *comp, Jpeg2000T1Context *t1, Jpeg2000Band *band, const int M_b)
static void	mct_decode (const Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
static int	tile_codeblocks (const Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
static int	jpeg2000_decode_tile (AVCodecContext *avctx, void *td, int jobnr, int threadnr)
static void	jpeg2000_dec_cleanup (Jpeg2000DecoderContext *s)
static int	jpeg2000_read_main_headers (Jpeg2000DecoderContext *s)
static int	jpeg2000_read_bitstream_packets (Jpeg2000DecoderContext *s)
static int	jp2_find_codestream (Jpeg2000DecoderContext *s)
static av_cold int	jpeg2000_decode_init (AVCodecContext *avctx)
static int	jpeg2000_decode_frame (AVCodecContext *avctx, AVFrame *picture, const AVPacket *avpkt)
static int	jpeg2000_receive_frame (AVCodecContext *avctx, AVFrame *frame)

Variables
static enum AVPixelFormat	rgb_pix_fmts [] = {RGB_PIXEL_FORMATS}
static enum AVPixelFormat	gray_pix_fmts [] = {GRAY_PIXEL_FORMATS}
static enum AVPixelFormat	yuv_pix_fmts [] = {YUV_PIXEL_FORMATS}
static enum AVPixelFormat	xyz_pix_fmts []
static enum AVPixelFormat	all_pix_fmts []
static const AVOption	options []
static const AVClass	jpeg2000_class
const FFCodec	ff_jpeg2000_decoder

Detailed Description

JPEG 2000 image decoder.

Definition in file jpeg2000dec.c.

Macro Definition Documentation

JP2_SIG_TYPE

#define JP2_SIG_TYPE   0x6A502020

Definition at line 50 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

JP2_SIG_VALUE

#define JP2_SIG_VALUE   0x0D0A870A

Definition at line 51 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

JP2_CODESTREAM

#define JP2_CODESTREAM   0x6A703263

Definition at line 52 of file jpeg2000dec.c.

Referenced by jp2_find_codestream().

JP2_HEADER

#define JP2_HEADER   0x6A703268

Definition at line 53 of file jpeg2000dec.c.

Referenced by jp2_find_codestream().

HAD_COC

#define HAD_COC   0x01

Definition at line 55 of file jpeg2000dec.c.

Referenced by get_coc(), and get_cod().

HAD_QCC

#define HAD_QCC   0x02

Definition at line 56 of file jpeg2000dec.c.

Referenced by get_qcc(), and get_qcd().

HT_MIXED

#define HT_MIXED   0x80

Definition at line 64 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

RGB_PIXEL_FORMATS

#define RGB_PIXEL_FORMATS   AV_PIX_FMT_PAL8,AV_PIX_FMT_RGB24,AV_PIX_FMT_RGBA,AV_PIX_FMT_RGB48,AV_PIX_FMT_RGBA64

Definition at line 174 of file jpeg2000dec.c.

GRAY_PIXEL_FORMATS

#define GRAY_PIXEL_FORMATS   AV_PIX_FMT_GRAY8,AV_PIX_FMT_GRAY8A,AV_PIX_FMT_GRAY16,AV_PIX_FMT_YA16

Definition at line 175 of file jpeg2000dec.c.

YUV_PIXEL_FORMATS

#define YUV_PIXEL_FORMATS

Value:

                            AV_PIX_FMT_YUV410P,AV_PIX_FMT_YUV411P,AV_PIX_FMT_YUVA420P, \
                            AV_PIX_FMT_YUV420P,AV_PIX_FMT_YUV422P,AV_PIX_FMT_YUVA422P, \
                            AV_PIX_FMT_YUV440P,AV_PIX_FMT_YUV444P,AV_PIX_FMT_YUVA444P, \
                            AV_PIX_FMT_YUV420P9,AV_PIX_FMT_YUV422P9,AV_PIX_FMT_YUV444P9, \
                            AV_PIX_FMT_YUVA420P9,AV_PIX_FMT_YUVA422P9,AV_PIX_FMT_YUVA444P9, \
                            AV_PIX_FMT_YUV420P10,AV_PIX_FMT_YUV422P10,AV_PIX_FMT_YUV444P10, \
                            AV_PIX_FMT_YUVA420P10,AV_PIX_FMT_YUVA422P10,AV_PIX_FMT_YUVA444P10, \
                            AV_PIX_FMT_YUV420P12,AV_PIX_FMT_YUV422P12,AV_PIX_FMT_YUV444P12, \
                            AV_PIX_FMT_YUV420P14,AV_PIX_FMT_YUV422P14,AV_PIX_FMT_YUV444P14, \
                            AV_PIX_FMT_YUV420P16,AV_PIX_FMT_YUV422P16,AV_PIX_FMT_YUV444P16, \
                            AV_PIX_FMT_YUVA420P16,AV_PIX_FMT_YUVA422P16,AV_PIX_FMT_YUVA444P16

Definition at line 176 of file jpeg2000dec.c.

XYZ_PIXEL_FORMATS

#define XYZ_PIXEL_FORMATS   AV_PIX_FMT_XYZ12

Definition at line 187 of file jpeg2000dec.c.

WRITE_FRAME

#define WRITE_FRAME	(		D,
			PIXEL )

Definition at line 2325 of file jpeg2000dec.c.

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(Jpeg2000DecoderContext, x)

Definition at line 2961 of file jpeg2000dec.c.

VD

#define VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 2962 of file jpeg2000dec.c.

Enumeration Type Documentation

HT_PLHD_STATUS

enum HT_PLHD_STATUS

Enumerator
HT_PLHD_OFF
HT_PLHD_ON

Definition at line 59 of file jpeg2000dec.c.

Function Documentation

get_bits()

static int get_bits ( Jpeg2000DecoderContext * s, int n )

static

Definition at line 71 of file jpeg2000dec.c.

Referenced by getlblockinc(), getnpasses(), jpeg2000_decode_packet(), and tag_tree_decode().

jpeg2000_flush()

static void jpeg2000_flush ( Jpeg2000DecoderContext * s )

static

Definition at line 86 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

tag_tree_decode()

static int tag_tree_decode ( Jpeg2000DecoderContext * s, Jpeg2000TgtNode * node, int threshold )

static

Definition at line 94 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

pix_fmt_match()

static int pix_fmt_match ( enum AVPixelFormat pix_fmt, int components, int bpc, uint32_t log2_chroma_wh, int pal8 )

static

Definition at line 134 of file jpeg2000dec.c.

Referenced by get_siz().

get_siz()

static int get_siz ( Jpeg2000DecoderContext * s )

static

Definition at line 201 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_cap()

static int get_cap ( Jpeg2000DecoderContext * s, Jpeg2000CodingStyle * c )

static

Definition at line 449 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_cox()

static int get_cox ( Jpeg2000DecoderContext * s, Jpeg2000CodingStyle * c )

static

Definition at line 517 of file jpeg2000dec.c.

Referenced by get_coc(), and get_cod().

get_cod()

static int get_cod ( Jpeg2000DecoderContext * s, Jpeg2000CodingStyle * c, const uint8_t * properties )

static

Definition at line 593 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_coc()

static int get_coc ( Jpeg2000DecoderContext * s, Jpeg2000CodingStyle * c, uint8_t * properties )

static

Definition at line 630 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_rgn()

static int get_rgn ( Jpeg2000DecoderContext * s, int n )

static

Definition at line 665 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_qcx()

static int get_qcx ( Jpeg2000DecoderContext * s, int n, Jpeg2000QuantStyle * q )

static

Definition at line 698 of file jpeg2000dec.c.

Referenced by get_qcc(), and get_qcd().

get_qcd()

static int get_qcd ( Jpeg2000DecoderContext * s, int n, Jpeg2000QuantStyle * q, const uint8_t * properties )

static

Definition at line 743 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_qcc()

static int get_qcc ( Jpeg2000DecoderContext * s, int n, Jpeg2000QuantStyle * q, uint8_t * properties )

static

Definition at line 761 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_poc()

static int get_poc ( Jpeg2000DecoderContext * s, int size, Jpeg2000POC * p )

static

Definition at line 782 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_sot()

static int get_sot ( Jpeg2000DecoderContext * s, int n )

static

Definition at line 844 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

read_crg()

static int read_crg ( Jpeg2000DecoderContext * s, int n )

static

Definition at line 897 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

read_cpf()

static int read_cpf ( Jpeg2000DecoderContext * s, int n )

static

Definition at line 907 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_tlm()

static int get_tlm ( Jpeg2000DecoderContext * s, int n )

static

Definition at line 923 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_plt()

static int get_plt ( Jpeg2000DecoderContext * s, int n )

static

Definition at line 958 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_ppm()

static int get_ppm ( Jpeg2000DecoderContext * s, int n )

static

Definition at line 980 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_ppt()

static int get_ppt ( Jpeg2000DecoderContext * s, int n )

static

Definition at line 1004 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

init_tile()

static int init_tile ( Jpeg2000DecoderContext * s, int tileno )

static

Definition at line 1038 of file jpeg2000dec.c.

Referenced by jpeg2000_read_bitstream_packets().

getnpasses()

static int getnpasses ( Jpeg2000DecoderContext * s )

static

Definition at line 1095 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

getlblockinc()

static int getlblockinc ( Jpeg2000DecoderContext * s )

static

Definition at line 1110 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

select_header()

static void select_header ( Jpeg2000DecoderContext * s, const Jpeg2000Tile * tile, int * tp_index )

inlinestatic

Definition at line 1121 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

select_stream()

static void select_stream ( Jpeg2000DecoderContext * s, const Jpeg2000Tile * tile, int * tp_index, const Jpeg2000CodingStyle * codsty )

inlinestatic

Definition at line 1133 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

jpeg2000_decode_packet()

static int jpeg2000_decode_packet ( Jpeg2000DecoderContext * s, Jpeg2000Tile * tile, int * tp_index, const Jpeg2000CodingStyle * codsty, Jpeg2000ResLevel * rlevel, int precno, int layno, const uint8_t * expn, int numgbits )

static

Definition at line 1158 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packets_po_iteration().

jpeg2000_decode_packets_po_iteration()

static int jpeg2000_decode_packets_po_iteration ( Jpeg2000DecoderContext * s, Jpeg2000Tile * tile, int RSpoc, int CSpoc, int LYEpoc, int REpoc, int CEpoc, int Ppoc, int * tp_index )

static

Definition at line 1568 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packets().

jpeg2000_decode_packets()

static int jpeg2000_decode_packets ( Jpeg2000DecoderContext * s, Jpeg2000Tile * tile )

static

Definition at line 1859 of file jpeg2000dec.c.

Referenced by jpeg2000_read_bitstream_packets().

decode_sigpass()

static void decode_sigpass ( Jpeg2000T1Context * t1, int width, int height, int bpno, int bandno, int vert_causal_ctx_csty_symbol )

static

Definition at line 1896 of file jpeg2000dec.c.

Referenced by decode_cblk().

decode_refpass()

static void decode_refpass ( Jpeg2000T1Context * t1, int width, int height, int bpno, int vert_causal_ctx_csty_symbol )

static

Definition at line 1927 of file jpeg2000dec.c.

Referenced by decode_cblk().

decode_clnpass()

static void decode_clnpass ( const Jpeg2000DecoderContext * s, Jpeg2000T1Context * t1, int width, int height, int bpno, int bandno, int seg_symbols, int vert_causal_ctx_csty_symbol )

static

Definition at line 1953 of file jpeg2000dec.c.

Referenced by decode_cblk().

decode_cblk()

static int decode_cblk ( const Jpeg2000DecoderContext * s, Jpeg2000CodingStyle * codsty, Jpeg2000T1Context * t1, Jpeg2000Cblk * cblk, int width, int height, int bandpos, uint8_t roi_shift, const int M_b )

static

Definition at line 2017 of file jpeg2000dec.c.

Referenced by tile_codeblocks().

dequantization_float()

static void dequantization_float ( int x, int y, Jpeg2000Cblk * cblk, Jpeg2000Component * comp, Jpeg2000T1Context * t1, Jpeg2000Band * band, const int M_b )

static

Definition at line 2122 of file jpeg2000dec.c.

Referenced by tile_codeblocks().

dequantization_int()

static void dequantization_int ( int x, int y, Jpeg2000Cblk * cblk, Jpeg2000Component * comp, Jpeg2000T1Context * t1, Jpeg2000Band * band, const int M_b )

static

Definition at line 2144 of file jpeg2000dec.c.

Referenced by tile_codeblocks().

dequantization_int_97()

static void dequantization_int_97 ( int x, int y, Jpeg2000Cblk * cblk, Jpeg2000Component * comp, Jpeg2000T1Context * t1, Jpeg2000Band * band, const int M_b )

static

Definition at line 2177 of file jpeg2000dec.c.

Referenced by tile_codeblocks().

mct_decode()

static void mct_decode ( const Jpeg2000DecoderContext * s, Jpeg2000Tile * tile )

inlinestatic

Definition at line 2207 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_tile().

tile_codeblocks()

static int tile_codeblocks ( const Jpeg2000DecoderContext * s, Jpeg2000Tile * tile )

inlinestatic

Definition at line 2236 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_tile().

jpeg2000_decode_tile()

static int jpeg2000_decode_tile ( AVCodecContext * avctx, void * td, int jobnr, int threadnr )

static

Definition at line 2395 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

jpeg2000_dec_cleanup()

static void jpeg2000_dec_cleanup ( Jpeg2000DecoderContext * s )

static

Definition at line 2424 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

jpeg2000_read_main_headers()

static int jpeg2000_read_main_headers ( Jpeg2000DecoderContext * s )

static

Definition at line 2458 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

jpeg2000_read_bitstream_packets()

static int jpeg2000_read_bitstream_packets ( Jpeg2000DecoderContext * s )

static

Definition at line 2673 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

jp2_find_codestream()

static int jp2_find_codestream ( Jpeg2000DecoderContext * s )

static

Definition at line 2691 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

jpeg2000_decode_init()

static av_cold int jpeg2000_decode_init ( AVCodecContext * avctx )

static

Definition at line 2840 of file jpeg2000dec.c.

jpeg2000_decode_frame()

static int jpeg2000_decode_frame ( AVCodecContext * avctx, AVFrame * picture, const AVPacket * avpkt )

static

Definition at line 2858 of file jpeg2000dec.c.

Referenced by jpeg2000_receive_frame().

jpeg2000_receive_frame()

static int jpeg2000_receive_frame ( AVCodecContext * avctx, AVFrame * frame )

static

Definition at line 2939 of file jpeg2000dec.c.

Variable Documentation

rgb_pix_fmts

enum AVPixelFormat rgb_pix_fmts[] = {RGB_PIXEL_FORMATS}

static

Definition at line 189 of file jpeg2000dec.c.

Referenced by config_props(), geq_query_formats(), get_siz(), and query_formats().

gray_pix_fmts

enum AVPixelFormat gray_pix_fmts[] = {GRAY_PIXEL_FORMATS}

static

Definition at line 190 of file jpeg2000dec.c.

Referenced by get_siz(), and query_formats().

yuv_pix_fmts

enum AVPixelFormat yuv_pix_fmts[] = {YUV_PIXEL_FORMATS}

static

Definition at line 191 of file jpeg2000dec.c.

Referenced by config_props(), geq_query_formats(), get_siz(), and query_formats().

xyz_pix_fmts

enum AVPixelFormat xyz_pix_fmts[]

static

Initial value:

= {XYZ_PIXEL_FORMATS,
                                                   YUV_PIXEL_FORMATS}

Definition at line 192 of file jpeg2000dec.c.

Referenced by get_siz().

all_pix_fmts

enum AVPixelFormat all_pix_fmts[]

static

Initial value:

= {RGB_PIXEL_FORMATS,
                                                   GRAY_PIXEL_FORMATS,
                                                   YUV_PIXEL_FORMATS,
                                                   XYZ_PIXEL_FORMATS}

Definition at line 194 of file jpeg2000dec.c.

Referenced by get_siz(), query_formats(), and query_formats().

options

const AVOption options[]

static

Initial value:

= {
    { "lowres",  "Lower the decoding resolution by a power of two",
        OFFSET(reduction_factor), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, JPEG2000_MAX_RESLEVELS - 1, VD },
    { NULL },
}

Definition at line 2964 of file jpeg2000dec.c.

jpeg2000_class

const AVClass jpeg2000_class

static

Initial value:

= {
    .class_name = "jpeg2000",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 2970 of file jpeg2000dec.c.

ff_jpeg2000_decoder

const FFCodec ff_jpeg2000_decoder

Initial value:

= {
    .p.name           = "jpeg2000",
    CODEC_LONG_NAME("JPEG 2000"),
    .p.type           = AVMEDIA_TYPE_VIDEO,
    .p.id             = AV_CODEC_ID_JPEG2000,
    .p.capabilities   = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_DR1,
    .priv_data_size   = sizeof(Jpeg2000DecoderContext),
    .init             = jpeg2000_decode_init,
    FF_CODEC_RECEIVE_FRAME_CB(jpeg2000_receive_frame),
    .p.priv_class     = &jpeg2000_class,
    .p.max_lowres     = 5,
    .p.profiles       = NULL_IF_CONFIG_SMALL(ff_jpeg2000_profiles),
    .caps_internal    = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
}

Definition at line 2977 of file jpeg2000dec.c.