forked from KolibriOS/kolibrios
266 lines
9.6 KiB
C
266 lines
9.6 KiB
C
/*
|
|
* JPEG 2000 common defines, structures and functions
|
|
* Copyright (c) 2007 Kamil Nowosad
|
|
* Copyright (c) 2013 Nicolas Bertrand <nicoinattendu@gmail.com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_JPEG2000_H
|
|
#define AVCODEC_JPEG2000_H
|
|
|
|
/**
|
|
* @file
|
|
* JPEG 2000 structures and defines common
|
|
* to encoder and decoder
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "avcodec.h"
|
|
#include "mqc.h"
|
|
#include "jpeg2000dwt.h"
|
|
|
|
enum Jpeg2000Markers {
|
|
JPEG2000_SOC = 0xff4f, // start of codestream
|
|
JPEG2000_SIZ = 0xff51, // image and tile size
|
|
JPEG2000_COD, // coding style default
|
|
JPEG2000_COC, // coding style component
|
|
JPEG2000_TLM = 0xff55, // packed packet headers, tile-part header
|
|
JPEG2000_PLM = 0xff57, // tile-part lengths
|
|
JPEG2000_PLT, // packet length, main header
|
|
JPEG2000_QCD = 0xff5c, // quantization default
|
|
JPEG2000_QCC, // quantization component
|
|
JPEG2000_RGN, // region of interest
|
|
JPEG2000_POC, // progression order change
|
|
JPEG2000_PPM, // packet length, tile-part header
|
|
JPEG2000_PPT, // packed packet headers, main header
|
|
JPEG2000_CRG = 0xff63, // component registration
|
|
JPEG2000_COM, // comment
|
|
JPEG2000_SOT = 0xff90, // start of tile-part
|
|
JPEG2000_SOP, // start of packet
|
|
JPEG2000_EPH, // end of packet header
|
|
JPEG2000_SOD, // start of data
|
|
JPEG2000_EOC = 0xffd9, // end of codestream
|
|
};
|
|
|
|
enum Jpeg2000Quantsty { // quantization style
|
|
JPEG2000_QSTY_NONE, // no quantization
|
|
JPEG2000_QSTY_SI, // scalar derived
|
|
JPEG2000_QSTY_SE // scalar expounded
|
|
};
|
|
|
|
#define JPEG2000_MAX_CBLKW 64
|
|
#define JPEG2000_MAX_CBLKH 64
|
|
|
|
|
|
#define JPEG2000_MAX_DECLEVELS 32
|
|
#define JPEG2000_MAX_RESLEVELS (JPEG2000_MAX_DECLEVELS + 1)
|
|
|
|
// T1 flags
|
|
// flags determining significance of neighbor coefficients
|
|
#define JPEG2000_T1_SIG_N 0x0001
|
|
#define JPEG2000_T1_SIG_E 0x0002
|
|
#define JPEG2000_T1_SIG_W 0x0004
|
|
#define JPEG2000_T1_SIG_S 0x0008
|
|
#define JPEG2000_T1_SIG_NE 0x0010
|
|
#define JPEG2000_T1_SIG_NW 0x0020
|
|
#define JPEG2000_T1_SIG_SE 0x0040
|
|
#define JPEG2000_T1_SIG_SW 0x0080
|
|
#define JPEG2000_T1_SIG_NB (JPEG2000_T1_SIG_N | JPEG2000_T1_SIG_E | \
|
|
JPEG2000_T1_SIG_S | JPEG2000_T1_SIG_W | \
|
|
JPEG2000_T1_SIG_NE | JPEG2000_T1_SIG_NW | \
|
|
JPEG2000_T1_SIG_SE | JPEG2000_T1_SIG_SW)
|
|
// flags determining sign bit of neighbor coefficients
|
|
#define JPEG2000_T1_SGN_N 0x0100
|
|
#define JPEG2000_T1_SGN_S 0x0200
|
|
#define JPEG2000_T1_SGN_W 0x0400
|
|
#define JPEG2000_T1_SGN_E 0x0800
|
|
|
|
#define JPEG2000_T1_VIS 0x1000
|
|
#define JPEG2000_T1_SIG 0x2000
|
|
#define JPEG2000_T1_REF 0x4000
|
|
|
|
#define JPEG2000_T1_SGN 0x8000
|
|
|
|
// Codeblock coding styles
|
|
#define JPEG2000_CBLK_BYPASS 0x01 // Selective arithmetic coding bypass
|
|
#define JPEG2000_CBLK_RESET 0x02 // Reset context probabilities
|
|
#define JPEG2000_CBLK_TERMALL 0x04 // Terminate after each coding pass
|
|
#define JPEG2000_CBLK_VSC 0x08 // Vertical stripe causal context formation
|
|
#define JPEG2000_CBLK_PREDTERM 0x10 // Predictable termination
|
|
#define JPEG2000_CBLK_SEGSYM 0x20 // Segmentation symbols present
|
|
|
|
// Coding styles
|
|
#define JPEG2000_CSTY_PREC 0x01 // Precincts defined in coding style
|
|
#define JPEG2000_CSTY_SOP 0x02 // SOP marker present
|
|
#define JPEG2000_CSTY_EPH 0x04 // EPH marker present
|
|
|
|
// Progression orders
|
|
#define JPEG2000_PGOD_LRCP 0x00 // Layer-resolution level-component-position progression
|
|
#define JPEG2000_PGOD_RLCP 0x01 // Resolution level-layer-component-position progression
|
|
#define JPEG2000_PGOD_RPCL 0x02 // Resolution level-position-component-layer progression
|
|
#define JPEG2000_PGOD_PCRL 0x03 // Position-component-resolution level-layer progression
|
|
#define JPEG2000_PGOD_CPRL 0x04 // Component-position-resolution level-layer progression
|
|
|
|
typedef struct Jpeg2000T1Context {
|
|
int data[JPEG2000_MAX_CBLKW][JPEG2000_MAX_CBLKH];
|
|
int flags[JPEG2000_MAX_CBLKW + 2][JPEG2000_MAX_CBLKH + 2];
|
|
MqcState mqc;
|
|
} Jpeg2000T1Context;
|
|
|
|
typedef struct Jpeg2000TgtNode {
|
|
uint8_t val;
|
|
uint8_t vis;
|
|
struct Jpeg2000TgtNode *parent;
|
|
} Jpeg2000TgtNode;
|
|
|
|
typedef struct Jpeg2000CodingStyle {
|
|
int nreslevels; // number of resolution levels
|
|
int nreslevels2decode; // number of resolution levels to decode
|
|
uint8_t log2_cblk_width,
|
|
log2_cblk_height; // exponent of codeblock size
|
|
uint8_t transform; // DWT type
|
|
uint8_t csty; // coding style
|
|
uint8_t nlayers; // number of layers
|
|
uint8_t mct; // multiple component transformation
|
|
uint8_t cblk_style; // codeblock coding style
|
|
uint8_t prog_order; // progression order
|
|
uint8_t log2_prec_widths[JPEG2000_MAX_RESLEVELS]; // precincts size according resolution levels
|
|
uint8_t log2_prec_heights[JPEG2000_MAX_RESLEVELS]; // TODO: initialize prec_size array with 0?
|
|
} Jpeg2000CodingStyle;
|
|
|
|
typedef struct Jpeg2000QuantStyle {
|
|
uint8_t expn[JPEG2000_MAX_DECLEVELS * 3]; // quantization exponent
|
|
uint16_t mant[JPEG2000_MAX_DECLEVELS * 3]; // quantization mantissa
|
|
uint8_t quantsty; // quantization style
|
|
uint8_t nguardbits; // number of guard bits
|
|
} Jpeg2000QuantStyle;
|
|
|
|
typedef struct Jpeg2000Pass {
|
|
uint16_t rate;
|
|
int64_t disto;
|
|
} Jpeg2000Pass;
|
|
|
|
typedef struct Jpeg2000Cblk {
|
|
uint8_t npasses;
|
|
uint8_t ninclpasses; // number coding of passes included in codestream
|
|
uint8_t nonzerobits;
|
|
uint16_t length;
|
|
uint16_t lengthinc;
|
|
uint8_t lblock;
|
|
uint8_t zero;
|
|
uint8_t data[8192];
|
|
Jpeg2000Pass passes[100];
|
|
uint16_t coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
|
|
} Jpeg2000Cblk; // code block
|
|
|
|
typedef struct Jpeg2000Prec {
|
|
uint16_t nb_codeblocks_width;
|
|
uint16_t nb_codeblocks_height;
|
|
Jpeg2000TgtNode *zerobits;
|
|
Jpeg2000TgtNode *cblkincl;
|
|
Jpeg2000Cblk *cblk;
|
|
uint16_t coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
|
|
} Jpeg2000Prec; // precinct
|
|
|
|
typedef struct Jpeg2000Band {
|
|
uint16_t coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
|
|
uint16_t log2_cblk_width, log2_cblk_height;
|
|
int i_stepsize; // quantization stepsize
|
|
float f_stepsize; // quantization stepsize
|
|
Jpeg2000Prec *prec;
|
|
} Jpeg2000Band; // subband
|
|
|
|
typedef struct Jpeg2000ResLevel {
|
|
uint8_t nbands;
|
|
uint16_t coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
|
|
uint16_t num_precincts_x, num_precincts_y; // number of precincts in x/y direction
|
|
uint8_t log2_prec_width, log2_prec_height; // exponent of precinct size
|
|
Jpeg2000Band *band;
|
|
} Jpeg2000ResLevel; // resolution level
|
|
|
|
typedef struct Jpeg2000Component {
|
|
Jpeg2000ResLevel *reslevel;
|
|
DWTContext dwt;
|
|
float *f_data;
|
|
int *i_data;
|
|
uint16_t coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}} -- can be reduced with lowres option
|
|
uint16_t coord_o[2][2]; // border coordinates {{x0, x1}, {y0, y1}} -- original values from jpeg2000 headers
|
|
} Jpeg2000Component;
|
|
|
|
/* misc tools */
|
|
static inline int ff_jpeg2000_ceildivpow2(int a, int b)
|
|
{
|
|
return (a + (1 << b) - 1) >> b;
|
|
}
|
|
|
|
static inline int ff_jpeg2000_ceildiv(int a, int b)
|
|
{
|
|
return (a + b - 1) / b;
|
|
}
|
|
|
|
/* TIER-1 routines */
|
|
|
|
/* Set up lookup tables used in TIER-1. */
|
|
void ff_jpeg2000_init_tier1_luts(void);
|
|
|
|
/* Update significance of a coefficient at current position (x,y) and
|
|
* for neighbors. */
|
|
void ff_jpeg2000_set_significance(Jpeg2000T1Context *t1,
|
|
int x, int y, int negative);
|
|
|
|
extern uint8_t ff_jpeg2000_sigctxno_lut[256][4];
|
|
|
|
/* Get context label (number in range[0..8]) of a coefficient for significance
|
|
* propagation and cleanup coding passes. */
|
|
static inline int ff_jpeg2000_getsigctxno(int flag, int bandno)
|
|
{
|
|
return ff_jpeg2000_sigctxno_lut[flag & 255][bandno];
|
|
}
|
|
|
|
static const uint8_t refctxno_lut[2][2] = { { 14, 15 }, { 16, 16 } };
|
|
|
|
/* Get context label (number in range[14..16]) of a coefficient for magnitude
|
|
* refinement pass. */
|
|
static inline int ff_jpeg2000_getrefctxno(int flag)
|
|
{
|
|
return refctxno_lut[(flag >> 14) & 1][(flag & 255) != 0];
|
|
}
|
|
|
|
extern uint8_t ff_jpeg2000_sgnctxno_lut[16][16];
|
|
extern uint8_t ff_jpeg2000_xorbit_lut[16][16];
|
|
|
|
/* Get context label (number in range[9..13]) for sign decoding. */
|
|
static inline int ff_jpeg2000_getsgnctxno(int flag, int *xorbit)
|
|
{
|
|
*xorbit = ff_jpeg2000_xorbit_lut[flag & 15][(flag >> 8) & 15];
|
|
return ff_jpeg2000_sgnctxno_lut[flag & 15][(flag >> 8) & 15];
|
|
}
|
|
|
|
int ff_jpeg2000_init_component(Jpeg2000Component *comp,
|
|
Jpeg2000CodingStyle *codsty,
|
|
Jpeg2000QuantStyle *qntsty,
|
|
int cbps, int dx, int dy,
|
|
AVCodecContext *ctx);
|
|
|
|
void ff_jpeg2000_reinit(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty);
|
|
|
|
void ff_jpeg2000_cleanup(Jpeg2000Component *comp, Jpeg2000CodingStyle *codsty);
|
|
|
|
#endif /* AVCODEC_JPEG2000_H */
|