third_party/ffmpeg_includes/ffmpeg.59.37.100/libavcodec/jpeg2000.h - cobalt - Git at Google

 /*
  * 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, // tile-part length, main header
     JPEG2000_PLM = 0xff57, // packet length, main header
     JPEG2000_PLT,          // packet length, tile-part header
     JPEG2000_QCD = 0xff5c, // quantization default
     JPEG2000_QCC,          // quantization component
     JPEG2000_RGN,          // region of interest
     JPEG2000_POC,          // progression order change
     JPEG2000_PPM,          // packed packet headers, main header
     JPEG2000_PPT,          // packed packet headers, tile-part 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
 };

 #define JPEG2000_SOP_FIXED_BYTES 0xFF910004
 #define JPEG2000_SOP_BYTE_LENGTH 6

 enum Jpeg2000Quantsty { // quantization style
     JPEG2000_QSTY_NONE, // no quantization
     JPEG2000_QSTY_SI,   // scalar derived
     JPEG2000_QSTY_SE    // scalar expounded
 };

 #define JPEG2000_MAX_DECLEVELS 33
 #define JPEG2000_MAX_RESLEVELS (JPEG2000_MAX_DECLEVELS + 1)

 #define JPEG2000_MAX_PASSES 100

 // 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[6144];
     uint16_t flags[6156];
     MqcState mqc;
     int stride;
 } Jpeg2000T1Context;

 typedef struct Jpeg2000TgtNode {
     uint8_t val;
     uint8_t temp_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?
     uint8_t init;
 } 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;
     uint8_t flushed[4];
     int flushed_len;
 } Jpeg2000Pass;

 typedef struct Jpeg2000Layer {
     uint8_t *data_start;
     int data_len;
     int npasses;
     double disto;
     int cum_passes;
 } Jpeg2000Layer;

 typedef struct Jpeg2000Cblk {
     uint8_t npasses;
     uint8_t ninclpasses; // number coding of passes included in codestream
     uint8_t nonzerobits;
     uint8_t incl;
     uint16_t length;
     uint16_t *lengthinc;
     uint8_t nb_lengthinc;
     uint8_t lblock;
     uint8_t *data;
     size_t data_allocated;
     int nb_terminations;
     int nb_terminationsinc;
     int *data_start;
     Jpeg2000Pass *passes;
     Jpeg2000Layer *layers;
     int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
 } Jpeg2000Cblk; // code block

 typedef struct Jpeg2000Prec {
     int nb_codeblocks_width;
     int nb_codeblocks_height;
     Jpeg2000TgtNode *zerobits;
     Jpeg2000TgtNode *cblkincl;
     Jpeg2000Cblk *cblk;
     int decoded_layers;
     int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
 } Jpeg2000Prec; // precinct

 typedef struct Jpeg2000Band {
     int 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;
     int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
     int 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;
     int coord[2][2];   // border coordinates {{x0, x1}, {y0, y1}} -- can be reduced with lowres option
     int coord_o[2][2]; // border coordinates {{x0, x1}, {y0, y1}} -- original values from jpeg2000 headers
     uint8_t roi_shift; // ROI scaling value for the component
 } Jpeg2000Component;

 /* misc tools */
 static inline int ff_jpeg2000_ceildivpow2(int a, int b)
 {
     return -((-(int64_t)a) >> b);
 }

 static inline int ff_jpeg2000_ceildiv(int a, int64_t 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);

 static inline int needs_termination(int style, int passno) {
     if (style & JPEG2000_CBLK_BYPASS) {
         int type = passno % 3;
         passno /= 3;
         if (type == 0 && passno > 2)
             return 2;
         if (type == 2 && passno > 2)
             return 1;
         if (style & JPEG2000_CBLK_TERMALL) {
             return passno > 2 ? 2 : 1;
         }
     }
     if (style & JPEG2000_CBLK_TERMALL)
         return 1;
     return 0;
 }

 void ff_tag_tree_zero(Jpeg2000TgtNode *t, int w, int h, int val);

 #endif /* AVCODEC_JPEG2000_H */
	/*
	* 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, // tile-part length, main header
	JPEG2000_PLM = 0xff57, // packet length, main header
	JPEG2000_PLT, // packet length, tile-part header
	JPEG2000_QCD = 0xff5c, // quantization default
	JPEG2000_QCC, // quantization component
	JPEG2000_RGN, // region of interest
	JPEG2000_POC, // progression order change
	JPEG2000_PPM, // packed packet headers, main header
	JPEG2000_PPT, // packed packet headers, tile-part 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
	};

	#define JPEG2000_SOP_FIXED_BYTES 0xFF910004
	#define JPEG2000_SOP_BYTE_LENGTH 6

	enum Jpeg2000Quantsty { // quantization style
	JPEG2000_QSTY_NONE, // no quantization
	JPEG2000_QSTY_SI, // scalar derived
	JPEG2000_QSTY_SE // scalar expounded
	};

	#define JPEG2000_MAX_DECLEVELS 33
	#define JPEG2000_MAX_RESLEVELS (JPEG2000_MAX_DECLEVELS + 1)

	#define JPEG2000_MAX_PASSES 100

	// 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[6144];
	uint16_t flags[6156];
	MqcState mqc;
	int stride;
	} Jpeg2000T1Context;

	typedef struct Jpeg2000TgtNode {
	uint8_t val;
	uint8_t temp_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?
	uint8_t init;
	} 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;
	uint8_t flushed[4];
	int flushed_len;
	} Jpeg2000Pass;

	typedef struct Jpeg2000Layer {
	uint8_t *data_start;
	int data_len;
	int npasses;
	double disto;
	int cum_passes;
	} Jpeg2000Layer;

	typedef struct Jpeg2000Cblk {
	uint8_t npasses;
	uint8_t ninclpasses; // number coding of passes included in codestream
	uint8_t nonzerobits;
	uint8_t incl;
	uint16_t length;
	uint16_t *lengthinc;
	uint8_t nb_lengthinc;
	uint8_t lblock;
	uint8_t *data;
	size_t data_allocated;
	int nb_terminations;
	int nb_terminationsinc;
	int *data_start;
	Jpeg2000Pass *passes;
	Jpeg2000Layer *layers;
	int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
	} Jpeg2000Cblk; // code block

	typedef struct Jpeg2000Prec {
	int nb_codeblocks_width;
	int nb_codeblocks_height;
	Jpeg2000TgtNode *zerobits;
	Jpeg2000TgtNode *cblkincl;
	Jpeg2000Cblk *cblk;
	int decoded_layers;
	int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
	} Jpeg2000Prec; // precinct

	typedef struct Jpeg2000Band {
	int 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;
	int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}}
	int 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;
	int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}} -- can be reduced with lowres option
	int coord_o[2][2]; // border coordinates {{x0, x1}, {y0, y1}} -- original values from jpeg2000 headers
	uint8_t roi_shift; // ROI scaling value for the component
	} Jpeg2000Component;

	/* misc tools */
	static inline int ff_jpeg2000_ceildivpow2(int a, int b)
	{
	return -((-(int64_t)a) >> b);
	}

	static inline int ff_jpeg2000_ceildiv(int a, int64_t 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);

	static inline int needs_termination(int style, int passno) {
	if (style & JPEG2000_CBLK_BYPASS) {
	int type = passno % 3;
	passno /= 3;
	if (type == 0 && passno > 2)
	return 2;
	if (type == 2 && passno > 2)
	return 1;
	if (style & JPEG2000_CBLK_TERMALL) {
	return passno > 2 ? 2 : 1;
	}
	}
	if (style & JPEG2000_CBLK_TERMALL)
	return 1;
	return 0;
	}

	void ff_tag_tree_zero(Jpeg2000TgtNode *t, int w, int h, int val);

	#endif /* AVCODEC_JPEG2000_H */