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src/Source/LibOpenJPEG/jp2.h  view on Meta::CPAN

    OPJ_UINT32 type;
    OPJ_INT32 init_pos;
} opj_jp2_box_t;

typedef struct opj_jp2_header_handler
{
  /* marker value */
  OPJ_UINT32 id;
  /* action linked to the marker */
  OPJ_BOOL (*handler) (     opj_jp2_t *jp2, 
                            OPJ_BYTE *p_header_data, 
                            OPJ_UINT32 p_header_size, 
                            opj_event_mgr_t * p_manager);
}
opj_jp2_header_handler_t;


typedef struct opj_jp2_img_header_writer_handler 
{
  /* action to perform */
  OPJ_BYTE*   (*handler) (opj_jp2_t *jp2, OPJ_UINT32 * p_data_size);
  /* result of the action : data */
  OPJ_BYTE*   m_data;
  /* size of data */
  OPJ_UINT32  m_size;
} 
opj_jp2_img_header_writer_handler_t;

/** @name Exported functions */
/*@{*/
/* ----------------------------------------------------------------------- */

/**
 * Writes the Jpeg2000 file Header box - JP2 Header box (warning, this is a super box).
 *
 * @param  jp2      the jpeg2000 file codec.
 * @param  stream      the stream to write data to.
 * @param  p_manager  user event manager.
 *
 * @return true if writing was successful.
*/
OPJ_BOOL opj_jp2_write_jp2h(opj_jp2_t *jp2,
                            opj_stream_private_t *stream,
                            opj_event_mgr_t * p_manager );

/**
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 opj_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 p_stream  FIXME DOC
 * @param p_image   FIXME DOC
 * @param p_manager FIXME DOC
 *
 * @return Returns a decoded image if successful, returns NULL otherwise
*/
OPJ_BOOL opj_jp2_decode(opj_jp2_t *jp2,
                        opj_stream_private_t *p_stream,
            opj_image_t* p_image,
            opj_event_mgr_t * p_manager);

/**
 * 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
 * @param p_manager  FIXME DOC
*/
void opj_jp2_setup_encoder(  opj_jp2_t *jp2, 
                            opj_cparameters_t *parameters, 
                            opj_image_t *image, 
                            opj_event_mgr_t * p_manager);

/**
Encode an image into a JPEG-2000 file stream
@param jp2      JP2 compressor handle
@param stream    Output buffer stream
@param p_manager  event manager
@return Returns true if successful, returns false otherwise
*/
OPJ_BOOL opj_jp2_encode(  opj_jp2_t *jp2, 
              opj_stream_private_t *stream, 
              opj_event_mgr_t * p_manager);


/**
 * Starts a compression scheme, i.e. validates the codec parameters, writes the header.
 *
 * @param  jp2    the jpeg2000 file codec.
 * @param  stream    the stream object.
 * @param  p_image   FIXME DOC
 * @param p_manager FIXME DOC
 *
 * @return true if the codec is valid.
 */
OPJ_BOOL opj_jp2_start_compress(opj_jp2_t *jp2,
                                opj_stream_private_t *stream,
                                opj_image_t * p_image,
                                opj_event_mgr_t * p_manager);


/**
 * Ends the compression procedures and possibiliy add data to be read after the
 * codestream.
 */
OPJ_BOOL opj_jp2_end_compress(  opj_jp2_t *jp2,
                  opj_stream_private_t *cio,
                  opj_event_mgr_t * p_manager);

/* ----------------------------------------------------------------------- */

/**
 * Ends the decompression procedures and possibiliy add data to be read after the

src/Source/LibOpenJPEG/jp2.h  view on Meta::CPAN

                                    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_go_on,
                                    opj_stream_private_t *p_stream,
                                    opj_event_mgr_t * p_manager );

/**
 * Writes a tile.
 *
 * @param  p_jp2    the jpeg2000 codec.
 * @param p_tile_index  FIXME DOC
 * @param p_data        FIXME DOC
 * @param p_data_size   FIXME DOC
 * @param  p_stream      the stream to write data to.
 * @param  p_manager  the user event manager.
 */
OPJ_BOOL opj_jp2_write_tile (  opj_jp2_t *p_jp2,
                    OPJ_UINT32 p_tile_index,
                    OPJ_BYTE * p_data,
                    OPJ_UINT32 p_data_size,
                    opj_stream_private_t *p_stream,
                    opj_event_mgr_t * p_manager );

/**
 * Decode tile data.
 * @param  p_jp2    the jpeg2000 codec.
 * @param  p_tile_index FIXME DOC
 * @param  p_data       FIXME DOC
 * @param  p_data_size  FIXME DOC
 * @param  p_stream      the stream to write data to.
 * @param  p_manager  the user event manager.
 *
 * @return FIXME DOC
 */
OPJ_BOOL opj_jp2_decode_tile (  opj_jp2_t * p_jp2,
                                OPJ_UINT32 p_tile_index,
                                OPJ_BYTE * p_data,
                                OPJ_UINT32 p_data_size,
                                opj_stream_private_t *p_stream,
                                opj_event_mgr_t * p_manager );

/**
 * Creates a jpeg2000 file decompressor.
 *
 * @return  an empty jpeg2000 file codec.
 */
opj_jp2_t* opj_jp2_create (OPJ_BOOL p_is_decoder);

/**
Destroy a JP2 decompressor handle
@param jp2 JP2 decompressor handle to destroy
*/
void opj_jp2_destroy(opj_jp2_t *jp2);


/**
 * Sets the given area to be decoded. This function should be called right after opj_read_header and before any tile header reading.
 *
 * @param  p_jp2      the jpeg2000 codec.
 * @param  p_image     FIXME DOC
 * @param  p_start_x   the left position of the rectangle to decode (in image coordinates).
 * @param  p_start_y    the up position of the rectangle to decode (in image coordinates).
 * @param  p_end_x      the right position of the rectangle to decode (in image coordinates).
 * @param  p_end_y      the bottom position of the rectangle to decode (in image coordinates).
 * @param  p_manager    the user event manager
 *
 * @return  true      if the area could be set.
 */
OPJ_BOOL opj_jp2_set_decode_area(  opj_jp2_t *p_jp2,
                    opj_image_t* p_image,
                    OPJ_INT32 p_start_x, OPJ_INT32 p_start_y,
                    OPJ_INT32 p_end_x, OPJ_INT32 p_end_y,
                    opj_event_mgr_t * p_manager );

 /**
 * 
 */
OPJ_BOOL opj_jp2_get_tile(  opj_jp2_t *p_jp2,
                            opj_stream_private_t *p_stream,
                            opj_image_t* p_image,
                            opj_event_mgr_t * p_manager,
                            OPJ_UINT32 tile_index );


/**
 * 
 */
OPJ_BOOL opj_jp2_set_decoded_resolution_factor(opj_jp2_t *p_jp2, 
                                               OPJ_UINT32 res_factor, 
                                               opj_event_mgr_t * p_manager);


/* TODO MSD: clean these 3 functions */
/**
 * Dump some elements from the JP2 decompression structure .
 *
 *@param p_jp2        the jp2 codec.
 *@param flag        flag to describe what elments are dump.
 *@param out_stream      output stream where dump the elements.
 *
*/
void jp2_dump (opj_jp2_t* p_jp2, OPJ_INT32 flag, FILE* out_stream);

/**
 * Get the codestream info from a JPEG2000 codec.
 *
 *@param  p_jp2        jp2 codec.
 *
 *@return  the codestream information extract from the jpg2000 codec
 */
opj_codestream_info_v2_t* jp2_get_cstr_info(opj_jp2_t* p_jp2);

/**
 * Get the codestream index from a JPEG2000 codec.
 *
 *@param  p_jp2        jp2 codec.
 *
 *@return  the codestream index extract from the jpg2000 codec
 */
opj_codestream_index_t* jp2_get_cstr_index(opj_jp2_t* p_jp2);


/*@}*/

/*@}*/

#endif /* __JP2_H */