/* * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium * Copyright (c) 2002-2007, Professor Benoit Macq * Copyright (c) 2002-2003, Yannick Verschueren * Copyright (c) 2005, Herve Drolon, FreeImage Team * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef __JP2_H #define __JP2_H /** @file jp2.h @brief The JPEG-2000 file format Reader/Writer (JP2) */ /** @defgroup JP2 JP2 - JPEG-2000 file format reader/writer */ /*@{*/ #define JPIP_JPIP 0x6a706970 #define JP2_JP 0x6a502020 /**< JPEG 2000 signature box */ #define JP2_FTYP 0x66747970 /**< File type box */ #define JP2_JP2H 0x6a703268 /**< JP2 header box */ #define JP2_IHDR 0x69686472 /**< Image header box */ #define JP2_COLR 0x636f6c72 /**< Colour specification box */ #define JP2_JP2C 0x6a703263 /**< Contiguous codestream box */ #define JP2_URL 0x75726c20 /**< URL box */ #define JP2_DTBL 0x6474626c /**< Data Reference box */ #define JP2_BPCC 0x62706363 /**< Bits per component box */ #define JP2_JP2 0x6a703220 /**< File type fields */ #define JP2_PCLR 0x70636c72 /**< Palette box */ #define JP2_CMAP 0x636d6170 /**< Component Mapping box */ #define JP2_CDEF 0x63646566 /**< Channel Definition box */ /* ----------------------------------------------------------------------- */ /** Channel description: channel index, type, assocation */ typedef struct opj_jp2_cdef_info { unsigned short cn, typ, asoc; } opj_jp2_cdef_info_t; /** Channel descriptions and number of descriptions */ typedef struct opj_jp2_cdef { opj_jp2_cdef_info_t *info; unsigned short n; } opj_jp2_cdef_t; /** Component mappings: channel index, mapping type, palette index */ typedef struct opj_jp2_cmap_comp { unsigned short cmp; unsigned char mtyp, pcol; } opj_jp2_cmap_comp_t; /** Palette data: table entries, palette columns */ typedef struct opj_jp2_pclr { unsigned int *entries; unsigned char *channel_sign; unsigned char *channel_size; opj_jp2_cmap_comp_t *cmap; unsigned short nr_entries, nr_channels; } opj_jp2_pclr_t; /** Collector for ICC profile, palette, component mapping, channel description */ struct extension { unsigned char *jp2_profile_buf; int jp2_profile_len; opj_jp2_cdef_t *jp2_cdef; opj_jp2_pclr_t *jp2_pclr; unsigned char jp2_has_colr; }; /** JP2 component */ typedef struct opj_jp2_comps { int depth; int sgnd; int bpcc; } opj_jp2_comps_t; /** JPEG-2000 file format reader/writer */ typedef struct opj_jp2 { /** codec context */ opj_common_ptr cinfo; /** handle to the J2K codec */ opj_j2k_t *j2k; unsigned int w; unsigned int h; unsigned int numcomps; unsigned int bpc; unsigned int C; unsigned int UnkC; unsigned int IPR; unsigned int meth; unsigned int approx; unsigned int enumcs; unsigned int precedence; unsigned int brand; unsigned int minversion; unsigned int numcl; unsigned int *cl; opj_jp2_comps_t *comps; unsigned int j2k_codestream_offset; unsigned int j2k_codestream_length; } opj_jp2_t; /** JP2 Box */ typedef struct opj_jp2_box { int length; int type; int init_pos; } opj_jp2_box_t; /** @name Exported functions */ /*@{*/ /* ----------------------------------------------------------------------- */ /** Write the JP2H box - JP2 Header box (used in MJ2) @param jp2 JP2 handle @param cio Output buffer stream */ void jp2_write_jp2h(opj_jp2_t *jp2, opj_cio_t *cio); /** Read the JP2H box - JP2 Header box (used in MJ2) @param jp2 JP2 handle @param cio Input buffer stream @param ext Collector for profile, cdef and pclr data @return Returns true if successful, returns false otherwise */ bool jp2_read_jp2h(opj_jp2_t *jp2, opj_cio_t *cio, struct extension *ext); /** Creates a JP2 decompression structure @param cinfo Codec context info @return Returns a handle to a JP2 decompressor if successful, returns NULL otherwise */ opj_jp2_t* jp2_create_decompress(opj_common_ptr cinfo); /** Destroy a JP2 decompressor handle @param jp2 JP2 decompressor handle to destroy */ void jp2_destroy_decompress(opj_jp2_t *jp2); /** Setup the decoder decoding parameters using user parameters. Decoding parameters are returned in jp2->j2k->cp. @param jp2 JP2 decompressor handle @param parameters decompression parameters */ void jp2_setup_decoder(opj_jp2_t *jp2, opj_dparameters_t *parameters); /** Decode an image from a JPEG-2000 file stream @param jp2 JP2 decompressor handle @param cio Input buffer stream @param cstr_info Codestream information structure if required, NULL otherwise @return Returns a decoded image if successful, returns NULL otherwise */ opj_image_t* jp2_decode(opj_jp2_t *jp2, opj_cio_t *cio, opj_codestream_info_t *cstr_info); /** Creates a JP2 compression structure @param cinfo Codec context info @return Returns a handle to a JP2 compressor if successful, returns NULL otherwise */ opj_jp2_t* jp2_create_compress(opj_common_ptr cinfo); /** Destroy a JP2 compressor handle @param jp2 JP2 compressor handle to destroy */ void jp2_destroy_compress(opj_jp2_t *jp2); /** Setup the encoder parameters using the current image and using user parameters. Coding parameters are returned in jp2->j2k->cp. @param jp2 JP2 compressor handle @param parameters compression parameters @param image input filled image */ void jp2_setup_encoder(opj_jp2_t *jp2, opj_cparameters_t *parameters, opj_image_t *image); /** Encode an image into a JPEG-2000 file stream @param jp2 JP2 compressor handle @param cio Output buffer stream @param image Image to encode @param cstr_info Codestream information structure if required, NULL otherwise @return Returns true if successful, returns false otherwise */ bool jp2_encode(opj_jp2_t *jp2, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info); /* ----------------------------------------------------------------------- */ /*@}*/ /*@}*/ #endif /* __JP2_H */