hpdz_dequant_local.h

JPEG2000实现的源码

/*****************************************************************************/
/* Copyright 1998, Hewlett-Packard Company                                   */
/* All rights reserved                                                       */
/* File: "hpdz_dequant_local.h"                                              */
/* Description: Private definitions for "hpdz_dequant.c"                     */
/* Author: David Taubman                                                     */
/* Affiliation: Hewlett-Packard and                                          */
/*              The University of New South Wales, Australia                 */
/* Version: VM9.0                                                            */
/* Last Revised: 18 April, 2001                                              */
/*****************************************************************************/

/*****************************************************************************/
/* Modified to include TCQ                                                   */
/* Copyright 1999 Science Applications International Corporation (SAIC).     */
/* Copyright 1995 University of Arizona, Arizona Board of Regents.           */
/* All Rights Reserved for modified parts.                                   */
/*****************************************************************************/

/*****************************************************************************/
/* Modified for general wavelet decompositions.                              */
/* Copyright 2000 Science Applications International Corporation (SAIC).     */
/* Copyright 1995 University of Arizona, Arizona Board of Regents.           */
/* All Rights Reserved for modified parts.                                   */
/*****************************************************************************/

/*****************************************************************************/
/* Modified for general offset and scalar quantization.                      */
/* Copyright 2000 The MITRE Corporation.                                     */
/* All Rights Reserved for modified parts.                                   */
/*****************************************************************************/

#ifndef HPDZ_DEQUANT_LOCAL_H
#define HPDZ_DEQUANT_LOCAL_H

#define HPDZ_MEM_KEY "QUANTIZATION OBJECT MEMORY"

/*****************************************************************************/
/*                               hpdz_band_info                              */
/*****************************************************************************/

typedef
  struct hpdz_band_info {
    float scale; /* Scaling factor for floating point data. */
    ifc_int left_shift; /* Left shift for fixed-point data.  May be -ve. */
    int extra_lsbs; /* SAIC */

    /* MITRE General Offset/SQ Begin */
    double nz;
    /* MITRE General Offset/SQ End */

  } hpdz_band_info, *hpdz_band_info_ptr;

/*****************************************************************************/
/*                              hpdz_level_info                              */
/*****************************************************************************/

typedef
  struct hpdz_level_info {
    int min_band;
    int max_band;
    hpdz_band_info_ptr bands;
  } hpdz_level_info, *hpdz_level_info_ptr;

/*****************************************************************************/
/*                            hpdz_component_info                            */
/*****************************************************************************/

typedef
  struct hpdz_component_info {
    int num_levels;
    hpdz_level_info_ptr levels;
  } hpdz_component_info, *hpdz_component_info_ptr;

/*****************************************************************************/
/*                            hpdz_quantizer_obj                             */
/*****************************************************************************/

typedef
  struct hpdz_dequantizer_obj {
    dequantizer_obj base;
    int num_components;
    hpdz_component_info_ptr components;
    decoder_ref decoder;
    reverse_info_ref info;
    ifc_int three_eighths_mag; /* Zero unless using the `-Q3_8' option. */

    /* SAIC General Decomp. Begin */
    char *wt_output_file;
    float **wt_output;
    int *min_band;
    int *max_band;
    canvas_dims **band_dims;
    int **current_band_line;
    int **valid_band;
    /* SAIC General Decomp. End */

  } hpdz_dequantizer_obj, *hpdz_dequantizer_ref;

#endif /* HPDZ_DEQUANT_LOCAL_H */