jpeg2000dec.c File Reference

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

Go to the source code of this file.

Data Structures
struct	Jpeg2000POCEntry
struct	Jpeg2000POC
struct	Jpeg2000TilePart
struct	Jpeg2000Tile
struct	Jpeg2000DecoderContext

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	MAX_POCS   32
#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)   offsetof(Jpeg2000DecoderContext, x)
#define	VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

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_cox (Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c)
static int	get_cod (Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c, uint8_t *properties)
static int	get_coc (Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *c, uint8_t *properties)
static int	get_qcx (Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q)
static int	get_qcd (Jpeg2000DecoderContext *s, int n, Jpeg2000QuantStyle *q, 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 uint8_t	get_tlm (Jpeg2000DecoderContext *s, int n)
static int	get_plt (Jpeg2000DecoderContext *s, int n)
static int	init_tile (Jpeg2000DecoderContext *s, int tileno)
static int	getnpasses (Jpeg2000DecoderContext *s)
static int	getlblockinc (Jpeg2000DecoderContext *s)
static int	jpeg2000_decode_packet (Jpeg2000DecoderContext *s, Jpeg2000Tile *tile, int *tp_index, Jpeg2000CodingStyle *codsty, Jpeg2000ResLevel *rlevel, int precno, int layno, 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 (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 (Jpeg2000DecoderContext *s, Jpeg2000CodingStyle *codsty, Jpeg2000T1Context *t1, Jpeg2000Cblk *cblk, int width, int height, int bandpos)
static void	dequantization_float (int x, int y, Jpeg2000Cblk *cblk, Jpeg2000Component *comp, Jpeg2000T1Context *t1, Jpeg2000Band *band)
static void	dequantization_int (int x, int y, Jpeg2000Cblk *cblk, Jpeg2000Component *comp, Jpeg2000T1Context *t1, Jpeg2000Band *band)
static void	dequantization_int_97 (int x, int y, Jpeg2000Cblk *cblk, Jpeg2000Component *comp, Jpeg2000T1Context *t1, Jpeg2000Band *band)
static void	mct_decode (Jpeg2000DecoderContext *s, Jpeg2000Tile *tile)
static void	tile_codeblocks (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 void	jpeg2000_init_static_data (void)
static av_cold int	jpeg2000_decode_init (AVCodecContext *avctx)
static int	jpeg2000_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)

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
AVCodec	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 46 of file jpeg2000dec.c.

JP2_SIG_VALUE

#define JP2_SIG_VALUE   0x0D0A870A

Definition at line 47 of file jpeg2000dec.c.

JP2_CODESTREAM

#define JP2_CODESTREAM   0x6A703263

Definition at line 48 of file jpeg2000dec.c.

JP2_HEADER

#define JP2_HEADER   0x6A703268

Definition at line 49 of file jpeg2000dec.c.

HAD_COC

#define HAD_COC   0x01

Definition at line 51 of file jpeg2000dec.c.

HAD_QCC

#define HAD_QCC   0x02

Definition at line 52 of file jpeg2000dec.c.

MAX_POCS

#define MAX_POCS   32

Definition at line 54 of file jpeg2000dec.c.

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 232 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 233 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 234 of file jpeg2000dec.c.

XYZ_PIXEL_FORMATS

#define XYZ_PIXEL_FORMATS   AV_PIX_FMT_XYZ12

Definition at line 245 of file jpeg2000dec.c.

WRITE_FRAME

#define WRITE_FRAME	(		D,
			PIXEL
	)

Definition at line 1765 of file jpeg2000dec.c.

OFFSET

#define OFFSET

(

x

)

offsetof(Jpeg2000DecoderContext, x)

Definition at line 2265 of file jpeg2000dec.c.

VD

#define VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 2266 of file jpeg2000dec.c.

Function Documentation

get_bits()

static int get_bits ( Jpeg2000DecoderContext *  s, int  n  )

static

Definition at line 132 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 147 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 155 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 195 of file jpeg2000dec.c.

Referenced by get_siz().

get_siz()

static int get_siz ( Jpeg2000DecoderContext *  s )

static

Definition at line 259 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_cox()

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

static

Definition at line 449 of file jpeg2000dec.c.

Referenced by get_coc(), and get_cod().

get_cod()

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

static

Definition at line 524 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 561 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 591 of file jpeg2000dec.c.

Referenced by get_qcc(), and get_qcd().

get_qcd()

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

static

Definition at line 636 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 654 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 675 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_sot()

static int get_sot ( Jpeg2000DecoderContext *  s, int  n  )

static

Definition at line 737 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_tlm()

static uint8_t get_tlm ( Jpeg2000DecoderContext *  s, int  n  )

static

Definition at line 798 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

get_plt()

static int get_plt ( Jpeg2000DecoderContext *  s, int  n  )

static

Definition at line 832 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

init_tile()

static int init_tile ( Jpeg2000DecoderContext *  s, int  tileno  )

static

Definition at line 854 of file jpeg2000dec.c.

Referenced by jpeg2000_read_bitstream_packets().

getnpasses()

static int getnpasses ( Jpeg2000DecoderContext *  s )

static

Definition at line 900 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

getlblockinc()

static int getlblockinc ( Jpeg2000DecoderContext *  s )

static

Definition at line 915 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

jpeg2000_decode_packet()

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

static

Definition at line 926 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 1099 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 1377 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 1414 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 1444 of file jpeg2000dec.c.

Referenced by decode_cblk().

decode_clnpass()

static void decode_clnpass ( 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 1468 of file jpeg2000dec.c.

Referenced by decode_cblk().

decode_cblk()

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

static

Definition at line 1534 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  )

static

Definition at line 1619 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  )

static

Definition at line 1634 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  )

static

Definition at line 1654 of file jpeg2000dec.c.

Referenced by tile_codeblocks().

mct_decode()

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

inlinestatic

Definition at line 1668 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_tile().

tile_codeblocks()

static void tile_codeblocks ( Jpeg2000DecoderContext *  s, Jpeg2000Tile *  tile  )

inlinestatic

Definition at line 1696 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 1827 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

jpeg2000_dec_cleanup()

static void jpeg2000_dec_cleanup ( Jpeg2000DecoderContext *  s )

static

Definition at line 1866 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 1889 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 2008 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

jp2_find_codestream()

static int jp2_find_codestream ( Jpeg2000DecoderContext *  s )

static

Definition at line 2027 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

jpeg2000_init_static_data()

static av_cold void jpeg2000_init_static_data ( void  )

static

Definition at line 2176 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_init().

jpeg2000_decode_init()

static av_cold int jpeg2000_decode_init ( AVCodecContext *  avctx )

static

Definition at line 2182 of file jpeg2000dec.c.

jpeg2000_decode_frame()

static int jpeg2000_decode_frame ( AVCodecContext *  avctx, void *  data, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 2193 of file jpeg2000dec.c.

Variable Documentation

rgb_pix_fmts

enum AVPixelFormat rgb_pix_fmts[] = {RGB_PIXEL_FORMATS}

static

Definition at line 247 of file jpeg2000dec.c.

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

gray_pix_fmts

enum AVPixelFormat gray_pix_fmts[] = {GRAY_PIXEL_FORMATS}

static

Definition at line 248 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 249 of file jpeg2000dec.c.

Referenced by 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 250 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 252 of file jpeg2000dec.c.

Referenced by get_siz(), 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 2268 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 2274 of file jpeg2000dec.c.

ff_jpeg2000_decoder

AVCodec ff_jpeg2000_decoder

Initial value:

= {
    .name             = "jpeg2000",
    .long_name        = NULL_IF_CONFIG_SMALL("JPEG 2000"),
    .type             = AVMEDIA_TYPE_VIDEO,
    .id               = AV_CODEC_ID_JPEG2000,
    .capabilities     = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_DR1,
    .priv_data_size   = sizeof(Jpeg2000DecoderContext),
    .init             = jpeg2000_decode_init,
    .decode           = jpeg2000_decode_frame,
    .priv_class       = &jpeg2000_class,
    .max_lowres       = 5,
    .profiles         = NULL_IF_CONFIG_SMALL(ff_jpeg2000_profiles)
}

Definition at line 2281 of file jpeg2000dec.c.