openjpeg/libopenjpeg/openjpeg.h

/*
 * Copyright (c) 2001-2003, David Janssens
 * Copyright (c) 2002-2003, Yannick Verschueren
 * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
 * Copyright (c) 2005, Hervé Drolon, FreeImage Team
 * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
 * 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 OPENJPEG_H
#define OPENJPEG_H

#define OPENJPEG_VERSION "1.0.0"

#define OPJ_EXPORT

/* 
==========================================================
   Compiler directives
==========================================================
*/
#ifndef __cplusplus
#if defined(HAVE_STDBOOL_H)
/*
The C language implementation does correctly provide the standard header
file "stdbool.h".
 */
#include <stdbool.h>
#else
/*
The C language implementation does not provide the standard header file
"stdbool.h" as required by ISO/IEC 9899:1999.  Try to compensate for this
braindamage below.
*/
#if !defined(bool)
#define	bool	int
#endif
#if !defined(true)
#define true	1
#endif
#if !defined(false)
#define	false	0
#endif
#endif
#endif /* __cplusplus */

/* 
==========================================================
   Useful constant definitions
==========================================================
*/

#ifndef MAX_PATH
#define MAX_PATH 260	/**< Maximum allowed size for filenames */
#endif /* MAX_PATH */

#define J2K_MAXRLVLS 33					/**< Number of maximum resolution level authorized */
#define J2K_MAXBANDS (3*J2K_MAXRLVLS-2)	/**< Number of maximum sub-band linked to number of resolution level */

/* 
==========================================================
   enum definitions
==========================================================
*/

/** Progression order */
typedef enum PROG_ORDER {
	PROG_UNKNOWN = -1,	/**< place-holder */
	LRCP = 0,		/**< layer-resolution-component-precinct order */
	RLCP = 1,		/**< resolution-layer-component-precinct order */
	RPCL = 2,		/**< resolution-precinct-component-layer order */
	PCRL = 3,		/**< precinct-component-resolution-layer order */
	CPRL = 4		/**< component-precinct-resolution-layer order */
} OPJ_PROG_ORDER;

/**
Supported image color spaces
*/
typedef enum COLOR_SPACE {
	CLRSPC_UNKNOWN = -1,	/**< place-holder */
	CLRSPC_SRGB = 1,		/**< sRGB */
	CLRSPC_GRAY = 2,		/**< grayscale */
	CLRSPC_SYCC = 3			/**< YUV */
} OPJ_COLOR_SPACE;

/**
Supported codec
*/
typedef enum CODEC_FORMAT {
	CODEC_UNKNOWN = -1,	/**< place-holder */
	CODEC_J2K = 0,		/**< JPEG-2000 codestream : read/write */
	CODEC_JPT = 1,		/**< JPT-stream (JPEG 2000, JPIP) : read only */
	CODEC_JP2 = 2		/**< JPEG-2000 file format : read/write */
} OPJ_CODEC_FORMAT;

/* 
==========================================================
   event manager typedef definitions
==========================================================
*/

/**
Callback function prototype for events
@param msg Event message
@param client_data 
*/
typedef void (*opj_msg_callback) (const char *msg, void *client_data);

/**
Message handler object
used for 
<ul>
<li>Error messages
<li>Warning messages
<li>Debugging messages
</ul>
*/
typedef struct opj_event_mgr {
	/** Error message callback if available, NULL otherwise */
	opj_msg_callback error_handler;
	/** Warning message callback if available, NULL otherwise */
	opj_msg_callback warning_handler;
	/** Debug message callback if available, NULL otherwise */
	opj_msg_callback info_handler;
} opj_event_mgr_t;


/* 
==========================================================
   codec typedef definitions
==========================================================
*/

/**
Progression order changes
*/
typedef struct opj_poc {
  int resno0, compno0;
  int layno1, resno1, compno1;
  OPJ_PROG_ORDER prg;
  int tile;
  char progorder[4];
} opj_poc_t;

/**
Compression parameters
*/
typedef struct opj_cparameters {
	/** size of tile: tile_size_on = false (not in argument) or = true (in argument) */
	bool tile_size_on;
	/** XTOsiz */
	int cp_tx0;
	/** YTOsiz */
	int cp_ty0;
	/** XTsiz */
	int cp_tdx;
	/** YTsiz */
	int cp_tdy;
	/** allocation by rate/distortion */
	int cp_disto_alloc;
	/** allocation by fixed layer */
	int cp_fixed_alloc;
	/** add fixed_quality */
	int cp_fixed_quality;
	/** fixed layer */
	int *cp_matrice;
	/** comment for coding */
	char *cp_comment;
	/** csty : coding style */
	int csty;
	/** progression order (default LRCP) */
	OPJ_PROG_ORDER prog_order;
	/** progression order changes */
	opj_poc_t POC[32];
	/** number of progression order changes (POC), default to 0 */
	int numpocs;
	/** number of layers */
	int tcp_numlayers;
	/** rates of layers */
	int tcp_rates[100];
	/** different psnr for successive layers */
	float tcp_distoratio[100];
	/** number of resolutions */
	int numresolution;
	/** initial code block width, default to 64 */
 	int cblockw_init;
	/** initial code block height, default to 64 */
	int cblockh_init;
	/** mode switch (cblk_style) */
	int mode;
	/** 1 : use the irreversible DWT 9-7, 0 : use lossless compression (default) */
	int irreversible;
	/** region of interest: affected component in [0..3], -1 means no ROI */
	int roi_compno;
	/** region of interest: upshift value */
	int roi_shift;
	/* number of precinct size specifications */
	int res_spec;
	/** initial precinct width */
	int prcw_init[J2K_MAXRLVLS];
	/** initial precinct height */
	int prch_init[J2K_MAXRLVLS];

	/**@name command line encoder parameters (not used inside the library) */
	/*@{*/
	/** input file name */
	char infile[MAX_PATH];
	/** output file name */
	char outfile[MAX_PATH];
	/** creation of an index file, default to 0 (false) */
	int index_on;
	/** index file name */
	char index[MAX_PATH];
	/** subimage encoding: origin image offset in x direction */
	int image_offset_x0;
	/** subimage encoding: origin image offset in y direction */
	int image_offset_y0;
	/** subsampling value for dx */
	int subsampling_dx;
	/** subsampling value for dy */
	int subsampling_dy;
	/** input file format 0: PGX, 1: PxM, 2: BMP */
	int decod_format;
	/** output file format 0: J2K, 1: JP2, 2: JPT */
	int cod_format;
	/*@}*/
} opj_cparameters_t;

/**
Decompression parameters
*/
typedef struct opj_dparameters {
	/** 
	Set the number of highest resolution levels to be discarded. 
	The image resolution is effectively divided by 2 to the power of the number of discarded levels. 
	The reduce factor is limited by the smallest total number of decomposition levels among tiles.
	if != 0, then original dimension divided by 2^(reduce); 
	if == 0 or not used, image is decoded to the full resolution 
	*/
	int cp_reduce;
	/** 
	Set the maximum number of quality layers to decode. 
	If there are less quality layers than the specified number, all the quality layers are decoded.
	if != 0, then only the first "layer" layers are decoded; 
	if == 0 or not used, all the quality layers are decoded 
	*/
	int cp_layer;

	/**@name command line encoder parameters (not used inside the library) */
	/*@{*/
	/** input file name */
	char infile[MAX_PATH];
	/** output file name */
	char outfile[MAX_PATH];
	/** input file format 0: J2K, 1: JP2, 2: JPT */
	int decod_format;
	/** output file format 0: PGX, 1: PxM, 2: BMP */
	int cod_format;
	/*@}*/
} opj_dparameters_t;

/** Common fields between JPEG-2000 compression and decompression master structs. */

#define opj_common_fields \
	opj_event_mgr_t *event_mgr;	/**< pointer to the event manager */\
	void * client_data;			/**< Available for use by application */\
	bool is_decompressor;		/**< So common code can tell which is which */\
	OPJ_CODEC_FORMAT codec_format;	/**< selected codec */\
	void *j2k_handle;			/**< pointer to the J2K codec */\
	void *jp2_handle			/**< pointer to the JP2 codec */
	
/* Routines that are to be used by both halves of the library are declared
 * to receive a pointer to this structure.  There are no actual instances of
 * opj_common_struct_t, only of opj_cinfo_t and opj_dinfo_t.
 */
typedef struct opj_common_struct {
  opj_common_fields;		/* Fields common to both master struct types */
  /* Additional fields follow in an actual opj_cinfo_t or
   * opj_dinfo_t.  All three structs must agree on these
   * initial fields!  (This would be a lot cleaner in C++.)
   */
} opj_common_struct_t;

typedef opj_common_struct_t * opj_common_ptr;

/**
Compression context info
*/
typedef struct opj_cinfo {
	/** Fields shared with opj_dinfo_t */
	opj_common_fields;	
	/* other specific fields go here */
} opj_cinfo_t;

/**
Decompression context info
*/
typedef struct opj_dinfo {
	/** Fields shared with opj_cinfo_t */
	opj_common_fields;	
	/* other specific fields go here */
} opj_dinfo_t;

/* 
==========================================================
   I/O stream typedef definitions
==========================================================
*/

/*
 * Stream open flags.
 */
/** The stream was opened for reading. */
#define OPJ_STREAM_READ	0x0001
/** The stream was opened for writing. */
#define OPJ_STREAM_WRITE 0x0002

/**
Byte input-output stream (CIO)
*/
typedef struct opj_cio {
	/** codec context */
	opj_common_ptr cinfo;

	/** open mode (read/write) either OPJ_STREAM_READ or OPJ_STREAM_WRITE */
	int openmode;
	/** pointer to the start of the buffer */
	unsigned char *buffer;
	/** buffer size in bytes */
	int length;

	/** pointer to the start of the stream */
	unsigned char *start;
	/** pointer to the end of the stream */
	unsigned char *end;
	/** pointer to the current position */
	unsigned char *bp;
} opj_cio_t;

/* 
==========================================================
   image typedef definitions
==========================================================
*/

/**
Defines a single image component
*/
typedef struct opj_image_comp {
	/** XRsiz: horizontal separation of a sample of ith component with respect to the reference grid */
	int dx;
	/** YRsiz: vertical separation of a sample of ith component with respect to the reference grid */
	int dy;
	/** data width */
	int w;
	/** data height */
	int h;
	/** x component offset compared to the whole image */
	int x0;
	/** y component offset compared to the whole image */
	int y0;
	/** precision */
	int prec;
	/** image depth in bits */
	int bpp;
	/** signed (1) / unsigned (0) */
	int sgnd;
	/** number of decoded resolution */
	int resno_decoded;
	/** number of division by 2 of the out image compared to the original size of image */
	int factor;
	/** image component data */
	int *data;
} opj_image_comp_t;

/** 
Defines image data and characteristics
*/
typedef struct opj_image {
	/** XOsiz: horizontal offset from the origin of the reference grid to the left side of the image area */
	int x0;
	/** YOsiz: vertical offset from the origin of the reference grid to the top side of the image area */
	int y0;
	/** Xsiz: width of the reference grid */
	int x1;
	/** Ysiz: height of the reference grid */
	int y1;
	/** number of components in the image */
	int numcomps;
	/** color space: sRGB, Greyscale or YUV */
	OPJ_COLOR_SPACE color_space;
	/** image components */
	opj_image_comp_t *comps;
} opj_image_t;

/**
Component parameters structure used by the opj_image_create function
*/
typedef struct opj_image_comptparm {
	/** XRsiz: horizontal separation of a sample of ith component with respect to the reference grid */
	int dx;
	/** YRsiz: vertical separation of a sample of ith component with respect to the reference grid */
	int dy;
	/** data width */
	int w;
	/** data height */
	int h;
	/** x component offset compared to the whole image */
	int x0;
	/** y component offset compared to the whole image */
	int y0;
	/** precision */
	int prec;
	/** image depth in bits */
	int bpp;
	/** signed (1) / unsigned (0) */
	int sgnd;
} opj_image_cmptparm_t;

#ifdef __cplusplus
extern "C" {
#endif


/* 
==========================================================
   openjpeg version
==========================================================
*/

const char * opj_version();

/* 
==========================================================
   image functions definitions
==========================================================
*/

/**
Create an image
@param numcmpts number of components
@param cmptparms components parameters
@param clrspc image color space
@return returns a new image structure if successful, returns NULL otherwise
*/
OPJ_EXPORT opj_image_t *opj_image_create(int numcmpts, opj_image_cmptparm_t *cmptparms, OPJ_COLOR_SPACE clrspc);

/**
Deallocate any resources associated with an image
@param image image to be destroyed
*/
OPJ_EXPORT void opj_image_destroy(opj_image_t *image);

/* 
==========================================================
   stream functions definitions
==========================================================
*/

/**
Open and allocate a memory stream for read / write. 
On reading, the user must provide a buffer containing encoded data. The buffer will be 
wrapped by the returned CIO handle. 
On writing, buffer parameters must be set to 0: a buffer will be allocated by the library 
to contain encoded data. 
@param cinfo Codec context info
@param buffer Reading: buffer address. Writing: NULL
@param length Reading: buffer length. Writing: 0
@return Returns a CIO handle if successful, returns NULL otherwise
*/
OPJ_EXPORT opj_cio_t* opj_cio_open(opj_common_ptr cinfo, unsigned char *buffer, int length);

/**
Close and free a CIO handle
@param cio CIO handle to free
*/
OPJ_EXPORT void opj_cio_close(opj_cio_t *cio);

/**
Get position in byte stream
@param cio CIO handle
@return Returns the position in bytes
*/
OPJ_EXPORT int cio_tell(opj_cio_t *cio);
/**
Set position in byte stream
@param cio CIO handle
@param pos Position, in number of bytes, from the beginning of the stream
*/
void cio_seek(opj_cio_t *cio, int pos);

/* 
==========================================================
   event manager functions definitions
==========================================================
*/

OPJ_EXPORT opj_event_mgr_t* opj_set_event_mgr(opj_common_ptr cinfo, opj_event_mgr_t *event_mgr, void *context);

/* 
==========================================================
   codec functions definitions
==========================================================
*/
/**
Creates a J2K/JPT/JP2 decompression structure
@param format Decoder to select
@return Returns a handle to a decompressor if successful, returns NULL otherwise
*/
OPJ_EXPORT opj_dinfo_t* opj_create_decompress(OPJ_CODEC_FORMAT format);
/**
Destroy a decompressor handle
@param dinfo decompressor handle to destroy
*/
OPJ_EXPORT void opj_destroy_decompress(opj_dinfo_t *dinfo);
/**
Set decoding parameters to default values
@param parameters Decompression parameters
*/
OPJ_EXPORT void opj_set_default_decoder_parameters(opj_dparameters_t *parameters);
/**
Setup the decoder decoding parameters using user parameters.
Decoding parameters are returned in j2k->cp. 
@param dinfo decompressor handle
@param parameters decompression parameters
*/
OPJ_EXPORT void opj_setup_decoder(opj_dinfo_t *dinfo, opj_dparameters_t *parameters);
/**
Decode an image from a JPEG-2000 codestream
@param dinfo decompressor handle
@param cio Input buffer stream
@return Returns a decoded image if successful, returns NULL otherwise
*/
OPJ_EXPORT opj_image_t* opj_decode(opj_dinfo_t *dinfo, opj_cio_t *cio);
/**
Creates a J2K/JP2 compression structure
@param format Coder to select
@return Returns a handle to a compressor if successful, returns NULL otherwise
*/
OPJ_EXPORT opj_cinfo_t* opj_create_compress(OPJ_CODEC_FORMAT format);
/**
Destroy a compressor handle
@param cinfo compressor handle to destroy
*/
OPJ_EXPORT void opj_destroy_compress(opj_cinfo_t *cinfo);
/**
Set encoding parameters to default values, that means : 
<ul>
<li>Lossless
<li>1 tile
<li>Size of precinct : 2^15 x 2^15 (means 1 precinct)
<li>Size of code-block : 64 x 64
<li>Number of resolutions: 6
<li>No SOP marker in the codestream
<li>No EPH marker in the codestream
<li>No sub-sampling in x or y direction
<li>No mode switch activated
<li>Progression order: LRCP
<li>No index file
<li>No ROI upshifted
<li>No offset of the origin of the image
<li>No offset of the origin of the tiles
<li>Reversible DWT 5-3
</ul>
@param parameters Compression parameters
*/
OPJ_EXPORT void opj_set_default_encoder_parameters(opj_cparameters_t *parameters);
/**
Setup the encoder parameters using the current image and using user parameters. 
@param cinfo compressor handle
@param parameters compression parameters
@param image input filled image
*/
OPJ_EXPORT void opj_setup_encoder(opj_cinfo_t *cinfo, opj_cparameters_t *parameters, opj_image_t *image);
/**
Encode an image into a JPEG-2000 codestream
@param cinfo compressor handle
@param cio Output buffer stream
@param image Image to encode
@param index Name of the index file if required, NULL otherwise
@return Returns true if successful, returns false otherwise
*/
OPJ_EXPORT bool opj_encode(opj_cinfo_t *cinfo, opj_cio_t *cio, opj_image_t *image, char *index);

#ifdef __cplusplus
}
#endif

#endif /* OPENJPEG_H */