third_party/libopenjpeg20/opj_codec.h

/*
 * The copyright in this software is being made available under the 2-clauses
 * BSD License, included below. This software may be subject to other third
 * party and contributor rights, including patent rights, and no such rights
 * are granted under this license.
 *
 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
 * Copyright (c) 2002-2014, Professor Benoit Macq
 * 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 OPJ_CODEC_H
#define OPJ_CODEC_H
/**
@file opj_codec.h
*/


/**
 * Main codec handler used for compression or decompression.
 */
typedef struct opj_codec_private {
    /** FIXME DOC */
    union {
        /**
         * Decompression handler.
         */
        struct opj_decompression {
            /** Main header reading function handler */
            OPJ_BOOL(*opj_read_header)(struct opj_stream_private * cio,
                                       void * p_codec,
                                       opj_image_t **p_image,
                                       struct opj_event_mgr * p_manager);

            /** Decoding function */
            OPJ_BOOL(*opj_decode)(void * p_codec,
                                  struct opj_stream_private * p_cio,
                                  opj_image_t * p_image,
                                  struct opj_event_mgr * p_manager);

            /** FIXME DOC */
            OPJ_BOOL(*opj_read_tile_header)(void * p_codec,
                                            OPJ_UINT32 * p_tile_index,
                                            OPJ_UINT32 * p_data_size,
                                            OPJ_INT32 * p_tile_x0,
                                            OPJ_INT32 * p_tile_y0,
                                            OPJ_INT32 * p_tile_x1,
                                            OPJ_INT32 * p_tile_y1,
                                            OPJ_UINT32 * p_nb_comps,
                                            OPJ_BOOL * p_should_go_on,
                                            struct opj_stream_private * p_cio,
                                            struct opj_event_mgr * p_manager);

            /** FIXME DOC */
            OPJ_BOOL(*opj_decode_tile_data)(void * p_codec,
                                            OPJ_UINT32 p_tile_index,
                                            OPJ_BYTE * p_data,
                                            OPJ_UINT32 p_data_size,
                                            struct opj_stream_private * p_cio,
                                            struct opj_event_mgr * p_manager);

            /** Reading function used after codestream if necessary */
            OPJ_BOOL(* opj_end_decompress)(void *p_codec,
                                           struct opj_stream_private * cio,
                                           struct opj_event_mgr * p_manager);

            /** Codec destroy function handler */
            void (*opj_destroy)(void * p_codec);

            /** Setup decoder function handler */
            void (*opj_setup_decoder)(void * p_codec, opj_dparameters_t * p_param);

            /** Set decode area function handler */
            OPJ_BOOL(*opj_set_decode_area)(void * p_codec,
                                           opj_image_t * p_image,
                                           OPJ_INT32 p_start_x,
                                           OPJ_INT32 p_end_x,
                                           OPJ_INT32 p_start_y,
                                           OPJ_INT32 p_end_y,
                                           struct opj_event_mgr * p_manager);

            /** Get tile function */
            OPJ_BOOL(*opj_get_decoded_tile)(void *p_codec,
                                            opj_stream_private_t * p_cio,
                                            opj_image_t *p_image,
                                            struct opj_event_mgr * p_manager,
                                            OPJ_UINT32 tile_index);

            /** Set the decoded resolution factor */
            OPJ_BOOL(*opj_set_decoded_resolution_factor)(void * p_codec,
                    OPJ_UINT32 res_factor,
                    opj_event_mgr_t * p_manager);

        } m_decompression;

        /**
         * Compression handler. FIXME DOC
         */
        struct opj_compression {
            OPJ_BOOL(* opj_start_compress)(void *p_codec,
                                           struct opj_stream_private * cio,
                                           struct opj_image * p_image,
                                           struct opj_event_mgr * p_manager);

            OPJ_BOOL(* opj_encode)(void * p_codec,
                                   struct opj_stream_private *p_cio,
                                   struct opj_event_mgr * p_manager);

            OPJ_BOOL(* opj_write_tile)(void * p_codec,
                                       OPJ_UINT32 p_tile_index,
                                       OPJ_BYTE * p_data,
                                       OPJ_UINT32 p_data_size,
                                       struct opj_stream_private * p_cio,
                                       struct opj_event_mgr * p_manager);

            OPJ_BOOL(* opj_end_compress)(void * p_codec,
                                         struct opj_stream_private * p_cio,
                                         struct opj_event_mgr * p_manager);

            void (* opj_destroy)(void * p_codec);

            OPJ_BOOL(* opj_setup_encoder)(void * p_codec,
                                          opj_cparameters_t * p_param,
                                          struct opj_image * p_image,
                                          struct opj_event_mgr * p_manager);
        } m_compression;
    } m_codec_data;
    /** FIXME DOC*/
    void * m_codec;
    /** Event handler */
    opj_event_mgr_t m_event_mgr;
    /** Flag to indicate if the codec is used to decode or encode*/
    OPJ_BOOL is_decompressor;
    void (*opj_dump_codec)(void * p_codec, OPJ_INT32 info_flag,
                           FILE* output_stream);
    opj_codestream_info_v2_t* (*opj_get_codec_info)(void* p_codec);
    opj_codestream_index_t* (*opj_get_codec_index)(void* p_codec);

    /** Set number of threads */
    OPJ_BOOL(*opj_set_threads)(void * p_codec, OPJ_UINT32 num_threads);
}
opj_codec_private_t;


#endif /* OPJ_CODEC_H */