JPEG 2000 image decoder. More...

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

Data Structures
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	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

#define	YUV_PIXEL_FORMATS

#define	XYZ_PIXEL_FORMATS AV_PIX_FMT_XYZ12

#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_sot (Jpeg2000DecoderContext *s, int n)

static uint8_t	get_tlm (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, Jpeg2000CodingStyle codsty, Jpeg2000ResLevel rlevel, int precno, int layno, uint8_t expn, int numgbits)

static int	jpeg2000_decode_packets (Jpeg2000DecoderContext s, Jpeg2000Tile tile)

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

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

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	mct_decode (Jpeg2000DecoderContext s, Jpeg2000Tile tile)

static int	jpeg2000_decode_tile (Jpeg2000DecoderContext s, Jpeg2000Tile tile, AVFrame *picture)

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, void data, int got_frame, AVPacket avpkt)

static av_cold void	jpeg2000_init_static_data (AVCodec *codec)

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 [] = {XYZ_PIXEL_FORMATS}

static enum AVPixelFormat	all_pix_fmts []

static const AVOption	options []

static const AVProfile	profiles []

static const AVClass	jpeg2000_class

AVCodec	ff_jpeg2000_decoder

Detailed Description

JPEG 2000 image decoder.

Definition in file jpeg2000dec.c.

Macro Definition Documentation

#define JP2_SIG_TYPE 0x6A502020

Definition at line 42 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

#define JP2_SIG_VALUE 0x0D0A870A

Definition at line 43 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

#define JP2_CODESTREAM 0x6A703263

Definition at line 44 of file jpeg2000dec.c.

Referenced by jp2_find_codestream().

#define JP2_HEADER 0x6A703268

Definition at line 45 of file jpeg2000dec.c.

Referenced by jp2_find_codestream().

#define HAD_COC 0x01

Definition at line 47 of file jpeg2000dec.c.

Referenced by get_coc(), and get_cod().

#define HAD_QCC 0x02

Definition at line 48 of file jpeg2000dec.c.

Referenced by get_qcc(), and get_qcd().

#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 203 of file jpeg2000dec.c.

#define GRAY_PIXEL_FORMATS AV_PIX_FMT_GRAY8,AV_PIX_FMT_GRAY8A,AV_PIX_FMT_GRAY16

Definition at line 204 of file jpeg2000dec.c.

#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 205 of file jpeg2000dec.c.

#define XYZ_PIXEL_FORMATS AV_PIX_FMT_XYZ12

Definition at line 216 of file jpeg2000dec.c.

#define OFFSET ( x ) offsetof(Jpeg2000DecoderContext, x)

Definition at line 1663 of file jpeg2000dec.c.

#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 1664 of file jpeg2000dec.c.

Function Documentation

static int get_bits	(	Jpeg2000DecoderContext *	s,
		int	n
	)

static

Definition at line 107 of file jpeg2000dec.c.

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

static void jpeg2000_flush ( Jpeg2000DecoderContext * s )

static

Definition at line 122 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

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

static

Definition at line 130 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

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

static

Definition at line 168 of file jpeg2000dec.c.

Referenced by get_siz().

static int get_siz ( Jpeg2000DecoderContext * s )

static

Definition at line 229 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

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

static

Definition at line 369 of file jpeg2000dec.c.

Referenced by get_coc(), and get_cod().

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

static

Definition at line 435 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

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

static

Definition at line 470 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

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

static

Definition at line 498 of file jpeg2000dec.c.

Referenced by get_qcc(), and get_qcd().

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

static

Definition at line 543 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

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

static

Definition at line 561 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

static int get_sot	(	Jpeg2000DecoderContext *	s,
		int	n
	)

static

Definition at line 583 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

static uint8_t get_tlm	(	Jpeg2000DecoderContext *	s,
		int	n
	)

static

Definition at line 639 of file jpeg2000dec.c.

Referenced by jpeg2000_read_main_headers().

static int init_tile	(	Jpeg2000DecoderContext *	s,
		int	tileno
	)

static

Definition at line 673 of file jpeg2000dec.c.

Referenced by jpeg2000_read_bitstream_packets().

static int getnpasses ( Jpeg2000DecoderContext * s )

static

Definition at line 708 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

static int getlblockinc ( Jpeg2000DecoderContext * s )

static

Definition at line 723 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packet().

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

static

Definition at line 734 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_packets().

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

static

Definition at line 829 of file jpeg2000dec.c.

Referenced by jpeg2000_read_bitstream_packets().

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

static

Definition at line 938 of file jpeg2000dec.c.

Referenced by decode_cblk().

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

static

Definition at line 968 of file jpeg2000dec.c.

Referenced by decode_cblk().

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 990 of file jpeg2000dec.c.

Referenced by decode_cblk().

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

static

Definition at line 1053 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_tile().

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

static

Definition at line 1117 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_tile().

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

static

Definition at line 1132 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_tile().

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

inlinestatic

Definition at line 1146 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_tile().

static int jpeg2000_decode_tile	(	Jpeg2000DecoderContext *	s,
		Jpeg2000Tile *	tile,
		AVFrame *	picture
	)

static

Definition at line 1169 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

static void jpeg2000_dec_cleanup ( Jpeg2000DecoderContext * s )

static

Definition at line 1336 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

static int jpeg2000_read_main_headers ( Jpeg2000DecoderContext * s )

static

Definition at line 1356 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

static int jpeg2000_read_bitstream_packets ( Jpeg2000DecoderContext * s )

static

Definition at line 1458 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

static int jp2_find_codestream ( Jpeg2000DecoderContext * s )

static

Definition at line 1477 of file jpeg2000dec.c.

Referenced by jpeg2000_decode_frame().

static av_cold int jpeg2000_decode_init ( AVCodecContext * avctx )

static

Definition at line 1577 of file jpeg2000dec.c.

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

static

Definition at line 1586 of file jpeg2000dec.c.

static av_cold void jpeg2000_init_static_data ( AVCodec * codec )

static

Definition at line 1657 of file jpeg2000dec.c.

Variable Documentation

enum AVPixelFormat rgb_pix_fmts[] = {RGB_PIXEL_FORMATS}

static

Definition at line 218 of file jpeg2000dec.c.

Referenced by geq_query_formats(), and get_siz().

enum AVPixelFormat gray_pix_fmts[] = {GRAY_PIXEL_FORMATS}

static

Definition at line 219 of file jpeg2000dec.c.

Referenced by get_siz().

enum AVPixelFormat yuv_pix_fmts[] = {YUV_PIXEL_FORMATS}

static

Definition at line 220 of file jpeg2000dec.c.

Referenced by geq_query_formats(), and get_siz().

enum AVPixelFormat xyz_pix_fmts[] = {XYZ_PIXEL_FORMATS}

static

Definition at line 221 of file jpeg2000dec.c.

Referenced by get_siz().

enum AVPixelFormat all_pix_fmts[]

static

Initial value:

= {RGB_PIXEL_FORMATS,
                                                   GRAY_PIXEL_FORMATS,
                                                   YUV_PIXEL_FORMATS,
                                                   XYZ_PIXEL_FORMATS}

Definition at line 222 of file jpeg2000dec.c.

Referenced by get_siz().

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 1666 of file jpeg2000dec.c.

const AVProfile profiles[]

static

Initial value:

= {
    { FF_PROFILE_JPEG2000_CSTREAM_RESTRICTION_0,  "JPEG 2000 codestream restriction 0"   },
    { FF_PROFILE_JPEG2000_CSTREAM_RESTRICTION_1,  "JPEG 2000 codestream restriction 1"   },
    { FF_PROFILE_JPEG2000_CSTREAM_NO_RESTRICTION, "JPEG 2000 no codestream restrictions" },
    { FF_PROFILE_JPEG2000_DCINEMA_2K,             "JPEG 2000 digital cinema 2K"          },
    { FF_PROFILE_JPEG2000_DCINEMA_4K,             "JPEG 2000 digital cinema 4K"          },
    { FF_PROFILE_UNKNOWN },
}

Definition at line 1672 of file jpeg2000dec.c.

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 1681 of file jpeg2000dec.c.

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     = CODEC_CAP_FRAME_THREADS,
    .priv_data_size   = sizeof(Jpeg2000DecoderContext),
    .init_static_data = jpeg2000_init_static_data,
    .init             = jpeg2000_decode_init,
    .decode           = jpeg2000_decode_frame,
    .priv_class       = &jpeg2000_class,
    .max_lowres       = 5,
    .profiles         = NULL_IF_CONFIG_SMALL(profiles)
}

Definition at line 1688 of file jpeg2000dec.c.

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

Function Documentation

Variable Documentation