234 lines
7.6 KiB
C
234 lines
7.6 KiB
C
/*
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* Copyright (c) 2004, Yannick Verschueren
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* Copyright (c) 2005, HervŽ Drolon, FreeImage Team
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* Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __JP2_H
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#define __JP2_H
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/**
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@file jp2.h
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@brief The JPEG-2000 file format Reader/Writer (JP2)
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*/
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/** @defgroup JP2 JP2 - JPEG-2000 file format reader/writer */
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/*@{*/
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#define JPIP_JPIP 0x6a706970
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#define JP2_JP 0x6a502020 /**< JPEG 2000 signature box */
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#define JP2_FTYP 0x66747970 /**< File type box */
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#define JP2_JP2H 0x6a703268 /**< JP2 header box */
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#define JP2_IHDR 0x69686472 /**< Image header box */
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#define JP2_COLR 0x636f6c72 /**< Colour specification box */
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#define JP2_JP2C 0x6a703263 /**< Contiguous codestream box */
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#define JP2_URL 0x75726c20 /**< URL box */
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#define JP2_DBTL 0x6474626c /**< ??? */
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#define JP2_BPCC 0x62706363 /**< Bits per component box */
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#define JP2_JP2 0x6a703220 /**< File type fields */
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/* ----------------------------------------------------------------------- */
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/**
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JP2 component
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*/
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typedef struct opj_jp2_comps {
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int depth;
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int sgnd;
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int bpcc;
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} opj_jp2_comps_t;
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/**
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JPEG-2000 file format reader/writer
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*/
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typedef struct opj_jp2 {
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/** codec context */
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opj_common_ptr cinfo;
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/** handle to the J2K codec */
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opj_j2k_t *j2k;
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unsigned int w;
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unsigned int h;
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unsigned int numcomps;
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unsigned int bpc;
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unsigned int C;
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unsigned int UnkC;
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unsigned int IPR;
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unsigned int meth;
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unsigned int approx;
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unsigned int enumcs;
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unsigned int precedence;
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unsigned int brand;
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unsigned int minversion;
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unsigned int numcl;
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unsigned int *cl;
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opj_jp2_comps_t *comps;
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opj_image_t *image;
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unsigned int j2k_codestream_offset;
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unsigned int j2k_codestream_length;
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} opj_jp2_t;
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/**
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JP2 Box
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*/
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typedef struct opj_jp2_box {
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int length;
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int type;
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int init_pos;
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} opj_jp2_box_t;
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/** @name Local static functions */
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/*@{*/
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/* ----------------------------------------------------------------------- */
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/**
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Read box headers
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@param cinfo Codec context info
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@param cio Input stream
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@param box
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@return Returns true if successful, returns false otherwise
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*/
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static bool jp2_read_boxhdr(opj_common_ptr cinfo, opj_cio_t *cio, opj_jp2_box_t *box);
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static void jp2_write_url(opj_cio_t *cio, char *Idx_file);
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/**
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Read the IHDR box - Image Header box
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@param jp2 JP2 handle
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@param cio Input buffer stream
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@return Returns true if successful, returns false otherwise
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*/
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static bool jp2_read_ihdr(opj_jp2_t *jp2, opj_cio_t *cio);
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static void jp2_write_ihdr(opj_jp2_t *jp2, opj_cio_t *cio);
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static void jp2_write_bpcc(opj_jp2_t *jp2, opj_cio_t *cio);
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static bool jp2_read_bpcc(opj_jp2_t *jp2, opj_cio_t *cio);
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static void jp2_write_colr(opj_jp2_t *jp2, opj_cio_t *cio);
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static bool jp2_read_colr(opj_jp2_t *jp2, opj_cio_t *cio);
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/**
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Write the JP2H box - JP2 Header box
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@param jp2 JP2 handle
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@param cio Output buffer stream
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*/
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static void jp2_write_jp2h(opj_jp2_t *jp2, opj_cio_t *cio);
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/**
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Read the JP2H box - JP2 Header box
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@param jp2 JP2 handle
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@param cio Input buffer stream
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@return Returns true if successful, returns false otherwise
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*/
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static bool jp2_read_jp2h(opj_jp2_t *jp2, opj_cio_t *cio);
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/**
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Write the FTYP box - File type box
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@param jp2 JP2 handle
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@param cio Output buffer stream
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*/
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static void jp2_write_ftyp(opj_jp2_t *jp2, opj_cio_t *cio);
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/**
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Read the FTYP box - File type box
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@param jp2 JP2 handle
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@param cio Input buffer stream
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@return Returns true if successful, returns false otherwise
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*/
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static bool jp2_read_ftyp(opj_jp2_t *jp2, opj_cio_t *cio);
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static int jp2_write_jp2c(opj_jp2_t *jp2, opj_cio_t *cio, char *index);
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static bool jp2_read_jp2c(opj_jp2_t *jp2, opj_cio_t *cio, unsigned int *j2k_codestream_length, unsigned int *j2k_codestream_offset);
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static void jp2_write_jp(opj_cio_t *cio);
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/**
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Read the JP box - JPEG 2000 signature
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@param jp2 JP2 handle
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@param cio Input buffer stream
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@return Returns true if successful, returns false otherwise
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*/
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static bool jp2_read_jp(opj_jp2_t *jp2, opj_cio_t *cio);
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/**
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Decode the structure of a JP2 file
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@param jp2 JP2 handle
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@param cio Input buffer stream
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@return Returns true if successful, returns false otherwise
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*/
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static bool jp2_read_struct(opj_jp2_t *jp2, opj_cio_t *cio);
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/* ----------------------------------------------------------------------- */
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/*@}*/
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/** @name Exported functions */
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/*@{*/
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/* ----------------------------------------------------------------------- */
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/**
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Creates a JP2 decompression structure
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@param cinfo Codec context info
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@return Returns a handle to a JP2 decompressor if successful, returns NULL otherwise
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*/
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opj_jp2_t* jp2_create_decompress(opj_common_ptr cinfo);
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/**
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Destroy a JP2 decompressor handle
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@param jp2 JP2 decompressor handle to destroy
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*/
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void jp2_destroy_decompress(opj_jp2_t *jp2);
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/**
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Setup the decoder decoding parameters using user parameters.
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Decoding parameters are returned in jp2->j2k->cp.
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@param jp2 JP2 decompressor handle
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@param parameters decompression parameters
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*/
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void jp2_setup_decoder(opj_jp2_t *jp2, opj_dparameters_t *parameters);
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/**
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Decode an image from a JPEG-2000 file stream
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@param jp2 JP2 decompressor handle
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@param cio Input buffer stream
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@return Returns a decoded image if successful, returns NULL otherwise
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*/
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opj_image_t* jp2_decode(opj_jp2_t *jp2, opj_cio_t *cio);
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/**
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Creates a JP2 compression structure
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@param cinfo Codec context info
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@return Returns a handle to a JP2 compressor if successful, returns NULL otherwise
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*/
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opj_jp2_t* jp2_create_compress(opj_common_ptr cinfo);
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/**
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Destroy a JP2 compressor handle
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@param jp2 JP2 compressor handle to destroy
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*/
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void jp2_destroy_compress(opj_jp2_t *jp2);
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/**
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Setup the encoder parameters using the current image and using user parameters.
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Coding parameters are returned in jp2->j2k->cp.
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@param jp2 JP2 compressor handle
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@param parameters compression parameters
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@param image input filled image
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*/
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void jp2_setup_encoder(opj_jp2_t *jp2, opj_cparameters_t *parameters, opj_image_t *image);
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/**
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Encode an image into a JPEG-2000 file stream
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@param jp2 JP2 compressor handle
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@param cio Output buffer stream
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@param image Image to encode
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@param index Name of the index file if required, NULL otherwise
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@return Returns true if successful, returns false otherwise
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*/
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bool jp2_encode(opj_jp2_t *jp2, opj_cio_t *cio, opj_image_t *image, char *index);
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/* ----------------------------------------------------------------------- */
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/*@}*/
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/*@}*/
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#endif /* __JP2_H */
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