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

*/
typedef struct opj_tcd_tilecomp
{
	OPJ_INT32 x0, y0, x1, y1;				/* dimension of component : left upper corner (x0, y0) right low corner (x1,y1) */
	OPJ_UINT32 numresolutions;				/* number of resolutions level */
	OPJ_UINT32 minimum_num_resolutions;		/* number of resolutions level to decode (at max)*/
	opj_tcd_resolution_t *resolutions;	/* resolutions information */
	OPJ_UINT32 resolutions_size;			/* size of data for resolutions (in bytes) */
	OPJ_INT32 *data;						/* data of the component */
	OPJ_UINT32 data_size;					/* size of the data of the component */
	OPJ_INT32 numpix;						/* add fixed_quality */
} opj_tcd_tilecomp_t;


/**
FIXME DOC
*/
typedef struct opj_tcd_tile {
	OPJ_INT32 x0, y0, x1, y1;		/* dimension of the tile : left upper corner (x0, y0) right low corner (x1,y1) */
	OPJ_UINT32 numcomps;			/* number of components in tile */
	opj_tcd_tilecomp_t *comps;	/* Components information */
	OPJ_INT32 numpix;				/* add fixed_quality */
	OPJ_FLOAT64 distotile;			/* add fixed_quality */
	OPJ_FLOAT64 distolayer[100];	/* add fixed_quality */
	OPJ_UINT32 packno;              /* packet number */
} opj_tcd_tile_t;

/**
FIXME DOC
*/
typedef struct opj_tcd_image
{
	opj_tcd_tile_t *tiles;		/* Tiles information */
}
opj_tcd_image_t;


/**
Tile coder/decoder
*/
typedef struct opj_tcd
{
	/** Position of the tilepart flag in Progression order*/
	OPJ_INT32 tp_pos;
	/** Tile part number*/
	OPJ_UINT32 tp_num;
	/** Current tile part number*/
	OPJ_UINT32 cur_tp_num;
	/** Total number of tileparts of the current tile*/
	OPJ_UINT32 cur_totnum_tp;
	/** Current Packet iterator number */
	OPJ_UINT32 cur_pino;
	/** info on each image tile */
	opj_tcd_image_t *tcd_image;
	/** image header */
	opj_image_t *image;
	/** coding parameters */
	opj_cp_t *cp;
	/** coding/decoding parameters common to all tiles */
	opj_tcp_t *tcp;
	/** current encoded/decoded tile */
	OPJ_UINT32 tcd_tileno;
	/** tell if the tcd is a decoder. */
	OPJ_UINT32 m_is_decoder : 1;
} opj_tcd_t;

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

/**
Dump the content of a tcd structure
*/
/*void tcd_dump(FILE *fd, opj_tcd_t *tcd, opj_tcd_image_t *img);*/ /* TODO MSD shoul use the new v2 structures */ 

/**
Create a new TCD handle
@param p_is_decoder FIXME DOC
@return Returns a new TCD handle if successful returns NULL otherwise
*/
opj_tcd_t* opj_tcd_create(OPJ_BOOL p_is_decoder);

/**
Destroy a previously created TCD handle
@param tcd TCD handle to destroy
*/
void opj_tcd_destroy(opj_tcd_t *tcd);

/**
 * Initialize the tile coder and may reuse some memory.
 * @param	p_tcd		TCD handle.
 * @param	p_image		raw image.
 * @param	p_cp		coding parameters.
 *
 * @return true if the encoding values could be set (false otherwise).
*/
OPJ_BOOL opj_tcd_init(	opj_tcd_t *p_tcd,
						opj_image_t * p_image,
						opj_cp_t * p_cp );

/**
 * Allocates memory for decoding a specific tile.
 *
 * @param	p_tcd		the tile decoder.
 * @param	p_tile_no	the index of the tile received in sequence. This not necessarily lead to the
 * tile at index p_tile_no.
 *
 * @return	true if the remaining data is sufficient.
 */
OPJ_BOOL opj_tcd_init_decode_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no);

void opj_tcd_makelayer_fixed(opj_tcd_t *tcd, OPJ_UINT32 layno, OPJ_UINT32 final);

void opj_tcd_rateallocate_fixed(opj_tcd_t *tcd);

void opj_tcd_makelayer(	opj_tcd_t *tcd,
						OPJ_UINT32 layno,
						OPJ_FLOAT64 thresh,
						OPJ_UINT32 final);

OPJ_BOOL opj_tcd_rateallocate(	opj_tcd_t *tcd,
								OPJ_BYTE *dest,
								OPJ_UINT32 * p_data_written,
								OPJ_UINT32 len,
								opj_codestream_info_t *cstr_info);

/**
 * Gets the maximum tile size that will be taken by the tile once decoded.
 */
OPJ_UINT32 opj_tcd_get_decoded_tile_size (opj_tcd_t *p_tcd );

/**
 * Encodes a tile from the raw image into the given buffer.
 * @param	p_tcd			Tile Coder handle
 * @param	p_tile_no		Index of the tile to encode.
 * @param	p_dest			Destination buffer
 * @param	p_data_written	pointer to an int that is incremented by the number of bytes really written on p_dest
 * @param	p_len			Maximum length of the destination buffer
 * @param	p_cstr_info		Codestream information structure
 * @return  true if the coding is successfull.
*/
OPJ_BOOL opj_tcd_encode_tile(   opj_tcd_t *p_tcd,
							    OPJ_UINT32 p_tile_no,
							    OPJ_BYTE *p_dest,
							    OPJ_UINT32 * p_data_written,
							    OPJ_UINT32 p_len,
							    struct opj_codestream_info *p_cstr_info);


/**
Decode a tile from a buffer into a raw image
@param tcd TCD handle
@param src Source buffer
@param len Length of source buffer
@param tileno Number that identifies one of the tiles to be decoded
@param cstr_info  FIXME DOC
*/
OPJ_BOOL opj_tcd_decode_tile(   opj_tcd_t *tcd,
							    OPJ_BYTE *src,
							    OPJ_UINT32 len,
							    OPJ_UINT32 tileno,
							    opj_codestream_index_t *cstr_info);


/**
 * Copies tile data from the system onto the given memory block.
 */
OPJ_BOOL opj_tcd_update_tile_data (	opj_tcd_t *p_tcd,
								    OPJ_BYTE * p_dest,
								    OPJ_UINT32 p_dest_length );

/**
 *
 */
OPJ_UINT32 opj_tcd_get_encoded_tile_size ( opj_tcd_t *p_tcd );

/**
 * Initialize the tile coder and may reuse some meory.
 *
 * @param	p_tcd		TCD handle.
 * @param	p_tile_no	current tile index to encode.
 *
 * @return true if the encoding values could be set (false otherwise).
*/
OPJ_BOOL opj_tcd_init_encode_tile (	opj_tcd_t *p_tcd,
								    OPJ_UINT32 p_tile_no );

/**
 * Copies tile data from the given memory block onto the system.
 */
OPJ_BOOL opj_tcd_copy_tile_data (opj_tcd_t *p_tcd,
                                 OPJ_BYTE * p_src,
                                 OPJ_UINT32 p_src_length );

/* ----------------------------------------------------------------------- */
/*@}*/

/*@}*/

#endif /* __TCD_H */