jpc_enc.h

/*
 * Copyright (c) 1999-2000 Image Power, Inc. and the University of
 *   British Columbia.
 * Copyright (c) 2001-2002 Michael David Adams.
 * All rights reserved.
 */
 
/* __START_OF_JASPER_LICENSE__
 * 
 * JasPer License Version 2.0
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 * Copyright (c) 2001-2006 Michael David Adams
 * Copyright (c) 1999-2000 Image Power, Inc.
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/*
 * $Id$
 */
 
#ifndef JPC_ENC_H
#define JPC_ENC_H
 
/******************************************************************************\
* Includes.
\******************************************************************************/
 
#include "jasper/jas_image.h"
#include "jasper/jas_seq.h"
#include "jasper/jas_stream.h"
 
#include "jpc_cod.h"
#include "jpc_t1cod.h"
#include "jpc_t2cod.h"
#include "jpc_mqenc.h"
#include "jpc_tagtree.h"
#include "jpc_cs.h"
#include "jpc_fix.h"
#include "jpc_flt.h"
#include "jpc_tsfb.h"
 
/******************************************************************************\
* Constants.
\******************************************************************************/
 
/* The number of bits used in various lookup tables. */
#define JPC_NUMEXTRABITS        JPC_NMSEDEC_FRACBITS
 
/* An invalid R-D slope value. */
#define JPC_BADRDSLOPE  (-1)
 
/******************************************************************************\
* Coding parameters types.
\******************************************************************************/
 
/* Per-component coding paramters. */
 
typedef struct {
 
        /* The horizontal sampling period. */
        uint_fast8_t sampgrdstepx;
 
        /* The vertical sampling period. */
        uint_fast8_t sampgrdstepy;
 
        /* The sample alignment horizontal offset. */
        uint_fast8_t sampgrdsubstepx;
 
        /* The sample alignment vertical offset. */
        uint_fast8_t sampgrdsubstepy;
 
        /* The precision of the samples. */
        uint_fast8_t prec;
 
        /* The signedness of the samples. */
        bool sgnd;
 
        /* The number of step sizes. */
        uint_fast16_t numstepsizes;
 
        /* The quantizer step sizes. */
        uint_fast16_t stepsizes[JPC_MAXBANDS];
 
} jpc_enc_ccp_t;
 
/* Per-tile coding parameters. */
 
typedef struct {
 
        /* The coding mode. */
        bool intmode;
 
        /* The coding style (i.e., SOP, EPH). */
        uint_fast8_t csty;
 
        /* The progression order. */
        uint_fast8_t prg;
 
        /* The multicomponent transform. */
        uint_fast8_t mctid;
 
        /* The number of layers. */
        uint_fast16_t numlyrs;
 
        /* The normalized bit rates associated with the various
          intermediate layers. */
        jpc_fix_t *ilyrrates;
 
} jpc_enc_tcp_t;
 
/* Per tile-component coding parameters. */
 
typedef struct {
 
        /* The coding style (i.e., explicit precinct sizes). */
        uint_fast8_t csty;
 
        /* The maximum number of resolution levels allowed. */
        uint_fast8_t maxrlvls;
 
        /* The exponent for the nominal code block width. */
        uint_fast16_t cblkwidthexpn;
 
        /* The exponent for the nominal code block height. */
        uint_fast16_t cblkheightexpn;
 
        /* The code block style parameters (e.g., lazy, terminate all,
          segmentation symbols, causal, reset probability models). */
        uint_fast8_t cblksty;
 
        /* The QMFB. */
        uint_fast8_t qmfbid;
 
        /* The precinct width values. */
        uint_fast16_t prcwidthexpns[JPC_MAXRLVLS];
 
        /* The precinct height values. */
        uint_fast16_t prcheightexpns[JPC_MAXRLVLS];
 
        /* The number of guard bits. */
        uint_fast8_t numgbits;
 
} jpc_enc_tccp_t;
 
/* Coding parameters. */
 
typedef struct {
 
        /* The debug level. */
        int debug;
 
        /* The horizontal offset from the origin of the reference grid to the
          left edge of the image area. */
        uint_fast32_t imgareatlx;
 
        /* The vertical offset from the origin of the reference grid to the
          top edge of the image area. */
        uint_fast32_t imgareatly;
 
        /* The horizontal offset from the origin of the reference grid to the
          right edge of the image area (plus one). */
        uint_fast32_t refgrdwidth;
 
        /* The vertical offset from the origin of the reference grid to the
          bottom edge of the image area (plus one). */
        uint_fast32_t refgrdheight;
 
        /* The horizontal offset from the origin of the tile grid to the
          origin of the reference grid. */
        uint_fast32_t tilegrdoffx;
 
        /* The vertical offset from the origin of the tile grid to the
          origin of the reference grid. */
        uint_fast32_t tilegrdoffy;
 
        /* The nominal tile width in units of the image reference grid. */
        uint_fast32_t tilewidth;
 
        /* The nominal tile height in units of the image reference grid. */
        uint_fast32_t tileheight;
 
        /* The number of tiles spanning the image area in the horizontal
          direction. */
        uint_fast32_t numhtiles;
 
        /* The number of tiles spanning the image area in the vertical
          direction. */
        uint_fast32_t numvtiles;
 
        /* The number of tiles. */
        uint_fast32_t numtiles;
 
        /* The number of components. */
        uint_fast16_t numcmpts;
 
        /* The per-component coding parameters. */
        jpc_enc_ccp_t *ccps;
 
        /* The per-tile coding parameters. */
        jpc_enc_tcp_t tcp;
 
        /* The per-tile-component coding parameters. */
        jpc_enc_tccp_t tccp;
 
        /* The target code stream length in bytes. */
        uint_fast32_t totalsize;
 
        /* The raw (i.e., uncompressed) size of the image in bytes. */
        uint_fast32_t rawsize;
 
} jpc_enc_cp_t;
 
/******************************************************************************\
* Encoder class.
\******************************************************************************/
 
/* Encoder per-coding-pass state information. */
 
typedef struct {
 
        /* The starting offset for this pass. */
        int start;
 
        /* The ending offset for this pass. */
        int end;
 
        /* The type of data in this pass (i.e., MQ or raw). */
        enum jpc_segtype type;
 
        /* Flag indicating that this pass is terminated. */
        int term;
 
        /* The entropy coder state after coding this pass. */
        jpc_mqencstate_t mqencstate;
 
        /* The layer to which this pass has been assigned. */
        unsigned lyrno;
 
        /* The R-D slope for this pass. */
        jpc_flt_t rdslope;
 
        /* The weighted MSE reduction associated with this pass. */
        jpc_flt_t wmsedec;
 
        /* The cumulative weighted MSE reduction. */
        jpc_flt_t cumwmsedec;
 
        /* The normalized MSE reduction. */
        long nmsedec;
 
} jpc_enc_pass_t;
 
/* Encoder per-code-block state information. */
 
typedef struct {
 
        /* The number of passes. */
        unsigned numpasses;
 
        /* The per-pass information. */
        jpc_enc_pass_t *passes;
 
        /* The number of passes encoded so far. */
        int numencpasses;
 
        /* The number of insignificant MSBs. */
        int numimsbs;
 
        /* The number of bits used to encode pass data lengths. */
        int numlenbits;
 
        /* The byte stream for this code block. */
        jas_stream_t *stream;
 
        /* The entropy encoder. */
        jpc_mqenc_t *mqenc;
 
        /* The data for this code block. */
        jas_matrix_t *data;
 
        /* The state for this code block. */
        jas_matrix_t *flags;
 
        /* The number of bit planes required for this code block. */
        int numbps;
 
        /* The next pass to be encoded. */
        jpc_enc_pass_t *curpass;
 
        /* The per-code-block-group state information. */
        struct jpc_enc_prc_s *prc;
 
        /* The saved current pass. */
        /* This is used by the rate control code. */
        jpc_enc_pass_t *savedcurpass;
 
        /* The saved length indicator size. */
        /* This is used by the rate control code. */
        int savednumlenbits;
 
        /* The saved number of encoded passes. */
        /* This is used by the rate control code. */
        int savednumencpasses;
 
} jpc_enc_cblk_t;
 
/* Encoder per-code-block-group state information. */
 
typedef struct jpc_enc_prc_s {
 
        /* The x-coordinate of the top-left corner of the precinct. */
        uint_fast32_t tlx;
 
        /* The y-coordinate of the top-left corner of the precinct. */
        uint_fast32_t tly;
 
        /* The x-coordinate of the bottom-right corner of the precinct
          (plus one). */
        uint_fast32_t brx;
 
        /* The y-coordinate of the bottom-right corner of the precinct
          (plus one). */
        uint_fast32_t bry;
 
        /* The number of code blocks spanning the precinct in the horizontal
        direction. */
        int numhcblks;
 
        /* The number of code blocks spanning the precinct in the vertical
        direction. */
        int numvcblks;
 
        /* The total number of code blocks. */
        unsigned numcblks;
 
        /* The per-code-block information. */
        jpc_enc_cblk_t *cblks;
 
        /* The inclusion tag tree. */
        jpc_tagtree_t *incltree;
 
        /* The insignifcant MSBs tag tree. */
        jpc_tagtree_t *nlibtree;
 
        /* The per-band information. */
        struct jpc_enc_band_s *band;
 
        /* The saved inclusion tag tree. */
        /* This is used by rate control. */
        jpc_tagtree_t *savincltree;
 
        /* The saved leading-insignificant-bit-planes tag tree. */
        /* This is used by rate control. */
        jpc_tagtree_t *savnlibtree;
 
} jpc_enc_prc_t;
 
/* Encoder per-band state information. */
 
typedef struct jpc_enc_band_s {
 
        /* The per precinct information. */
        jpc_enc_prc_t *prcs;
 
        /* The coefficient data for this band. */
        jas_matrix_t *data;
 
        /* The orientation of this band (i.e., LL, LH, HL, or HH). */
        enum jpc_tsfb_orient orient;
 
        /* The number of bit planes associated with this band. */
        int numbps;
 
        /* The quantizer step size. */
        jpc_fix_t absstepsize;
 
        /* The encoded quantizer step size. */
        int stepsize;
 
        /* The L2 norm of the synthesis basis functions associated with
          this band.  (The MCT is not considered in this value.) */
        jpc_fix_t synweight;
 
        /* The analysis gain for this band. */
        int analgain;
 
        /* The per-resolution-level information. */
        struct jpc_enc_rlvl_s *rlvl;
 
} jpc_enc_band_t;
 
/* Encoder per-resolution-level state information. */
 
typedef struct jpc_enc_rlvl_s {
 
        /* The x-coordinate of the top-left corner of the tile-component
          at this resolution. */
        uint_fast32_t tlx;
 
        /* The y-coordinate of the top-left corner of the tile-component
          at this resolution. */
        uint_fast32_t tly;
 
        /* The x-coordinate of the bottom-right corner of the tile-component
          at this resolution (plus one). */
        uint_fast32_t brx;
 
        /* The y-coordinate of the bottom-right corner of the tile-component
          at this resolution (plus one). */
        uint_fast32_t bry;
 
        /* The exponent value for the nominal precinct width measured
          relative to the associated LL band. */
        int prcwidthexpn;
 
        /* The exponent value for the nominal precinct height measured
          relative to the associated LL band. */
        int prcheightexpn;
 
        /* The number of precincts spanning the resolution level in the
          horizontal direction. */
        int numhprcs;
 
        /* The number of precincts spanning the resolution level in the
          vertical direction. */
        int numvprcs;
 
        /* The total number of precincts. */
        unsigned numprcs;
 
        /* The exponent value for the nominal code block group width.
          This quantity is associated with the next lower resolution level
          (assuming that there is one). */
        unsigned cbgwidthexpn;
 
        /* The exponent value for the nominal code block group height.
          This quantity is associated with the next lower resolution level
          (assuming that there is one). */
        unsigned cbgheightexpn;
 
        /* The exponent value for the code block width. */
        uint_fast16_t cblkwidthexpn;
 
        /* The exponent value for the code block height. */
        uint_fast16_t cblkheightexpn;
 
        /* The number of bands associated with this resolution level. */
        unsigned numbands;
 
        /* The per-band information. */
        jpc_enc_band_t *bands;
 
        /* The parent tile-component. */
        struct jpc_enc_tcmpt_s *tcmpt;
 
} jpc_enc_rlvl_t;
 
/* Encoder per-tile-component state information. */
 
typedef struct jpc_enc_tcmpt_s {
 
        /* The number of resolution levels. */
        unsigned numrlvls;
 
        /* The per-resolution-level information. */
        jpc_enc_rlvl_t *rlvls;
 
        /* The tile-component data. */
        jas_matrix_t *data;
 
        /* The QMFB. */
        int qmfbid;
 
        /* The number of bands. */
        int numbands;
 
        /* The TSFB. */
        jpc_tsfb_t *tsfb;
 
        /* The synthesis energy weight (for the MCT). */
        jpc_fix_t synweight;
 
        /* The precinct width exponents. */
        int prcwidthexpns[JPC_MAXRLVLS];
 
        /* The precinct height exponents. */
        int prcheightexpns[JPC_MAXRLVLS];
 
        /* The code block width exponent. */
        int cblkwidthexpn;
 
        /* The code block height exponent. */
        int cblkheightexpn;
 
        /* Coding style (i.e., explicit precinct sizes). */
        int csty;
 
        /* Code block style. */
        int cblksty;
 
        /* The number of quantizer step sizes. */
        int numstepsizes;
 
        /* The encoded quantizer step sizes. */
        uint_fast16_t stepsizes[JPC_MAXBANDS];
 
        /* The parent tile. */
        struct jpc_enc_tile_s *tile;
 
} jpc_enc_tcmpt_t;
 
/* Encoder per-tile state information. */
 
typedef struct jpc_enc_tile_s {
 
        /* The tile number. */
        uint_fast32_t tileno;
 
        /* The x-coordinate of the top-left corner of the tile measured with
          respect to the reference grid. */
        uint_fast32_t tlx;
 
        /* The y-coordinate of the top-left corner of the tile measured with
          respect to the reference grid. */
        uint_fast32_t tly;
 
        /* The x-coordinate of the bottom-right corner of the tile measured
          with respect to the reference grid (plus one). */
        uint_fast32_t brx;
 
        /* The y-coordinate of the bottom-right corner of the tile measured
          with respect to the reference grid (plus one). */
        uint_fast32_t bry;
 
        /* The coding style. */
        uint_fast8_t csty;
 
        /* The progression order. */
        uint_fast8_t prg;
 
        /* The number of layers. */
        unsigned numlyrs;
 
        /* The MCT to employ (if any). */
        uint_fast8_t mctid;
 
        /* The packet iterator (used to determine the order of packet
          generation). */
        jpc_pi_t *pi;
 
        /* The coding mode (i.e., integer or real). */
        bool intmode;
 
        /* The number of bytes to allocate to the various layers. */
        uint_fast32_t *lyrsizes;
 
        /* The number of tile-components. */
        unsigned numtcmpts;
 
        /* The per tile-component information. */
        jpc_enc_tcmpt_t *tcmpts;
 
        /* The raw (i.e., uncompressed) size of this tile. */
        uint_fast32_t rawsize;
 
} jpc_enc_tile_t;
 
/* Encoder class. */
 
typedef struct jpc_enc_s {
 
        /* The image being encoded. */
        jas_image_t *image;
 
        /* The output stream. */
        jas_stream_t *out;
 
        /* The coding parameters. */
        jpc_enc_cp_t *cp;
 
        /* The tile currently being processed. */
        jpc_enc_tile_t *curtile;
 
        /* The code stream state. */
        jpc_cstate_t *cstate;
 
        /* The number of bytes output so far. */
        uint_fast32_t len;
 
        /* The number of bytes available for the main body of the code stream. */
        /* This is used for rate allocation purposes. */
        uint_fast32_t mainbodysize;
 
        /* The marker segment currently being processed. */
        /* This member is a convenience for making cleanup easier. */
        jpc_ms_t *mrk;
 
        /* The stream used to temporarily hold tile-part data. */
        jas_stream_t *tmpstream;
 
} jpc_enc_t;
 
#endif