X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=libopenjpeg%2Fj2k.h;h=51907004bc416d15ccbe81dc920e3fa3b10b7be8;hb=a600d8f4e2c21ea0532d4af3dc6374b60b93c583;hp=74eba22329d5cd98592f4cb0e1f973b3fa21de5e;hpb=6621494d9d76576f536ab91d060a029cc5e95c50;p=openjpeg.git

diff --git a/libopenjpeg/j2k.h b/libopenjpeg/j2k.h
index 74eba223..51907004 100644
--- a/libopenjpeg/j2k.h
+++ b/libopenjpeg/j2k.h
@@ -77,6 +77,16 @@ The functions in J2K.C have for goal to read/write the several parts of the code
 #define J2K_MS_EPH 0xff92	/**< EPH marker value */
 #define J2K_MS_CRG 0xff63	/**< CRG marker value */
 #define J2K_MS_COM 0xff64	/**< COM marker value */
+
+#define J2K_MS_UNK 0		/**< UNKNOWN marker value */
+
+#ifdef TODO_MS /* FIXME */
+#define J2K_MS_CBD 0xff78	/**< CBD marker value */
+#define J2K_MS_MCC 0xff75	/**< MCC marker value */
+#define J2K_MS_MCT 0xff74	/**< MCT marker value */
+#define J2K_MS_MCO 0xff77	/**< MCO marker value */
+#endif
+
 /* UniPG>> */
 #ifdef USE_JPWL
 #define J2K_MS_EPC 0xff68	/**< EPC marker value (Part 11: JPEG 2000 for Wireless) */
@@ -91,6 +101,8 @@ The functions in J2K.C have for goal to read/write the several parts of the code
 /* <<UniPG */
 
 
+struct opj_stream_private;
+
 /* ----------------------------------------------------------------------- */
 
 /**
@@ -105,7 +117,9 @@ typedef enum J2K_STATUS {
 	J2K_STATE_TPH    = 0x0010, /**< the decoding process is in a tile part header */
 	J2K_STATE_MT     = 0x0020, /**< the EOC marker has just been read */
 	J2K_STATE_NEOC   = 0x0040, /**< the decoding process must not expect a EOC marker because the codestream is truncated */
-	J2K_STATE_ERR    = 0x0080  /**< the decoding process has encountered an error */
+
+	J2K_STATE_EOC	 = 0x0100,  /**< the decoding process has encountered the EOC marker */
+	J2K_STATE_ERR    = 0x8000 /**< the decoding process has encountered an error (FIXME warning V1 = 0x0080)*/
 } J2K_STATUS;
 
 /* ----------------------------------------------------------------------- */
@@ -128,35 +142,70 @@ typedef struct opj_stepsize {
 	int mant;
 } opj_stepsize_t;
 
+//OPJ_V1/**
+//Tile-component coding parameters
+//*/
+//typedef struct opj_tccp {
+//	/** coding style */
+//	int csty;
+//	/** number of resolutions */
+//	int numresolutions;
+//	/** code-blocks width */
+//	int cblkw;
+//	/** code-blocks height */
+//	int cblkh;
+//	/** code-block coding style */
+//	int cblksty;
+//	/** discrete wavelet transform identifier */
+//	int qmfbid;
+//	/** quantisation style */
+//	int qntsty;
+//	/** stepsizes used for quantization */
+//	opj_stepsize_t stepsizes[J2K_MAXBANDS];
+//	/** number of guard bits */
+//	int numgbits;
+//	/** Region Of Interest shift */
+//	int roishift;
+//	/** precinct width */
+//	int prcw[J2K_MAXRLVLS];
+//	/** precinct height */
+//	int prch[J2K_MAXRLVLS];
+//} opj_tccp_t;
+
 /**
 Tile-component coding parameters
 */
-typedef struct opj_tccp {
+typedef struct opj_tccp
+{
 	/** coding style */
-	int csty;
+	OPJ_UINT32 csty;
 	/** number of resolutions */
-	int numresolutions;
+	OPJ_UINT32 numresolutions;
 	/** code-blocks width */
-	int cblkw;
+	OPJ_UINT32 cblkw;
 	/** code-blocks height */
-	int cblkh;
+	OPJ_UINT32 cblkh;
 	/** code-block coding style */
-	int cblksty;
+	OPJ_UINT32 cblksty;
 	/** discrete wavelet transform identifier */
-	int qmfbid;
+	OPJ_UINT32 qmfbid;
 	/** quantisation style */
-	int qntsty;
+	OPJ_UINT32 qntsty;
 	/** stepsizes used for quantization */
 	opj_stepsize_t stepsizes[J2K_MAXBANDS];
 	/** number of guard bits */
-	int numgbits;
+	OPJ_UINT32 numgbits;
 	/** Region Of Interest shift */
-	int roishift;
+	OPJ_INT32 roishift;
 	/** precinct width */
-	int prcw[J2K_MAXRLVLS];
+	OPJ_UINT32 prcw[J2K_MAXRLVLS];
 	/** precinct height */
-	int prch[J2K_MAXRLVLS];	
-} opj_tccp_t;
+	OPJ_UINT32 prch[J2K_MAXRLVLS];
+	/** the dc_level_shift **/
+	OPJ_INT32 m_dc_level_shift;
+}
+opj_tccp_t;
+
 
 /**
 Tile coding parameters : 
@@ -198,6 +247,120 @@ typedef struct opj_tcp {
 	opj_tccp_t *tccps;
 } opj_tcp_t;
 
+
+/**
+ * Type of data for storing the MCT data
+ */
+typedef enum MCT_ELEMENT_TYPE
+{
+	MCT_TYPE_INT16 = 0,		/** MCT data is stored as signed shorts*/
+	MCT_TYPE_INT32 = 1,		/** MCT data is stored as signed integers*/
+	MCT_TYPE_FLOAT = 2,		/** MCT data is stored as floats*/
+	MCT_TYPE_DOUBLE = 3		/** MCT data is stored as doubles*/
+} J2K_MCT_ELEMENT_TYPE;
+
+/**
+ * Type of data for storing the MCT data
+ */
+typedef enum MCT_ARRAY_TYPE
+{
+	MCT_TYPE_DEPENDENCY = 0,
+	MCT_TYPE_DECORRELATION = 1,
+	MCT_TYPE_OFFSET = 2
+} J2K_MCT_ARRAY_TYPE;
+
+typedef struct opj_mct_data
+{
+	J2K_MCT_ELEMENT_TYPE m_element_type;
+	J2K_MCT_ARRAY_TYPE	 m_array_type;
+	OPJ_UINT32			 m_index;
+	OPJ_BYTE *			 m_data;
+	OPJ_UINT32			 m_data_size;
+}
+opj_mct_data_t;
+
+typedef struct opj_simple_mcc_decorrelation_data
+{
+	OPJ_UINT32			 m_index;
+	OPJ_UINT32			 m_nb_comps;
+	opj_mct_data_t *	 m_decorrelation_array;
+	opj_mct_data_t *	 m_offset_array;
+	OPJ_UINT32			 m_is_irreversible : 1;
+}
+opj_simple_mcc_decorrelation_data_t;
+
+/**
+Tile coding parameters :
+this structure is used to store coding/decoding parameters common to all
+tiles (information like COD, COC in main header)
+*/
+typedef struct opj_tcp_v2
+{
+	/** coding style */
+	OPJ_UINT32 csty;
+	/** progression order */
+	OPJ_PROG_ORDER prg;
+	/** number of layers */
+	OPJ_UINT32 numlayers;
+	OPJ_UINT32 num_layers_to_decode;
+	/** multi-component transform identifier */
+	OPJ_UINT32 mct;
+	/** rates of layers */
+	OPJ_FLOAT32 rates[100];
+	/** number of progression order changes */
+	OPJ_UINT32 numpocs;
+	/** progression order changes */
+	opj_poc_t pocs[32];
+	/** packet header store there for futur use in t2_decode_packet */
+	OPJ_BYTE *ppt_data;
+	/** used to keep a track of the allocated memory */
+	OPJ_BYTE *ppt_buffer;
+	/** Number of bytes stored inside ppt_data*/
+	OPJ_UINT32 ppt_data_size;
+	/** size of ppt_data*/
+	OPJ_UINT32 ppt_len;
+	/** add fixed_quality */
+	OPJ_FLOAT32 distoratio[100];
+	/** tile-component coding parameters */
+	opj_tccp_t *tccps;
+	/** number of tile parts for the tile. */
+	OPJ_UINT32 m_nb_tile_parts;
+	/** data for the tile */
+	OPJ_BYTE *		m_data;
+	/** size of data */
+	OPJ_UINT32		m_data_size;
+	/** encoding norms */
+	OPJ_FLOAT64 *	mct_norms;
+	/** the mct decoding matrix */
+	OPJ_FLOAT32 *	m_mct_decoding_matrix;
+	/** the mct coding matrix */
+	OPJ_FLOAT32 *	m_mct_coding_matrix;
+	/** mct records */
+	opj_mct_data_t * m_mct_records;
+	/** the number of mct records. */
+	OPJ_UINT32 m_nb_mct_records;
+	/** the max number of mct records. */
+	OPJ_UINT32 m_nb_max_mct_records;
+	/** mcc records */
+	opj_simple_mcc_decorrelation_data_t * m_mcc_records;
+	/** the number of mct records. */
+	OPJ_UINT32 m_nb_mcc_records;
+	/** the max number of mct records. */
+	OPJ_UINT32 m_nb_max_mcc_records;
+
+
+
+	/***** FLAGS *******/
+	/** If ppt == 1 --> there was a PPT marker for the present tile */
+	OPJ_UINT32 ppt : 1;
+	/** indicates if a POC marker has been used O:NO, 1:YES */
+	OPJ_UINT32 POC : 1;
+} opj_tcp_v2_t;
+
+
+
+
+
 /**
 Coding parameters
 */
@@ -265,15 +428,15 @@ typedef struct opj_cp {
 /* UniPG>> */
 #ifdef USE_JPWL
 	/** enables writing of EPC in MH, thus activating JPWL */
-	bool epc_on;
+	opj_bool epc_on;
 	/** enables writing of EPB, in case of activated JPWL */
-	bool epb_on;
+	opj_bool epb_on;
 	/** enables writing of ESD, in case of activated JPWL */
-	bool esd_on;
+	opj_bool esd_on;
 	/** enables writing of informative techniques of ESD, in case of activated JPWL */
-	bool info_on;
+	opj_bool info_on;
 	/** enables writing of RED, in case of activated JPWL */
-	bool red_on;
+	opj_bool red_on;
 	/** error protection method for MH (0,1,16,32,37-128) */
 	int hprot_MH;
 	/** tile number of header protection specification (>=0) */
@@ -299,7 +462,7 @@ typedef struct opj_cp {
 	/** sensitivity methods for TPHs (-1,0-7) */
 	int sens_TPH[JPWL_MAX_NO_TILESPECS];
 	/** enables JPWL correction at the decoder */
-	bool correct;
+	opj_bool correct;
 	/** expected number of components at the decoder */
 	int exp_comps;
 	/** maximum number of tiles at the decoder */
@@ -308,6 +471,214 @@ typedef struct opj_cp {
 /* <<UniPG */
 } opj_cp_t;
 
+typedef struct opj_encoding_param
+{
+	/** Digital cinema profile*/
+	OPJ_CINEMA_MODE m_cinema;
+	/** Maximum rate for each component. If == 0, component size limitation is not considered */
+	OPJ_UINT32 m_max_comp_size;
+	/** Position of tile part flag in progression order*/
+	OPJ_INT32 m_tp_pos;
+	/** fixed layer */
+	OPJ_INT32 *m_matrice;
+	/** Flag determining tile part generation*/
+	OPJ_BYTE m_tp_flag;
+	/** allocation by rate/distortion */
+	OPJ_UINT32 m_disto_alloc : 1;
+	/** allocation by fixed layer */
+	OPJ_UINT32 m_fixed_alloc : 1;
+	/** add fixed_quality */
+	OPJ_UINT32 m_fixed_quality : 1;
+	/** Enabling Tile part generation*/
+	OPJ_UINT32 m_tp_on : 1;
+}
+opj_encoding_param_t;
+
+typedef struct opj_decoding_param
+{
+	/** if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution */
+	OPJ_UINT32 m_reduce;
+	/** if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded */
+	OPJ_UINT32 m_layer;
+}
+opj_decoding_param_t;
+
+
+/**
+Coding parameters
+*/
+typedef struct opj_cp_v2
+{
+	/** Size of the image in bits*/
+	/*int img_size;*/
+	/** Rsiz*/
+	OPJ_RSIZ_CAPABILITIES rsiz;
+	/** XTOsiz */
+	OPJ_UINT32 tx0; // MSD see norm
+	/** YTOsiz */
+	OPJ_UINT32 ty0; // MSD see norm
+	/** XTsiz */
+	OPJ_UINT32 tdx;
+	/** YTsiz */
+	OPJ_UINT32 tdy;
+	/** comment */
+	OPJ_CHAR *comment;
+	/** number of tiles in width */
+	OPJ_UINT32 tw;
+	/** number of tiles in heigth */
+	OPJ_UINT32 th;
+
+
+
+
+	/** packet header store there for futur use in t2_decode_packet */
+	OPJ_BYTE *ppm_data;
+	/** size of the ppm_data*/
+	OPJ_UINT32 ppm_len;
+	/** size of the ppm_data*/
+	OPJ_UINT32 ppm_data_read;
+
+	OPJ_BYTE *ppm_data_current;
+
+	/** packet header storage original buffer */
+	OPJ_BYTE *ppm_buffer;
+	/** pointer remaining on the first byte of the first header if ppm is used */
+	OPJ_BYTE *ppm_data_first;
+	/** Number of bytes actually stored inside the ppm_data */
+	OPJ_UINT32 ppm_data_size;
+	/** use in case of multiple marker PPM (number of info already store) */
+	OPJ_INT32 ppm_store;
+	/** use in case of multiple marker PPM (case on non-finished previous info) */
+	OPJ_INT32 ppm_previous;
+
+	/** tile coding parameters */
+	opj_tcp_v2_t *tcps;
+	union
+	{
+		opj_decoding_param_t m_dec;
+		opj_encoding_param_t m_enc;
+	}
+	m_specific_param;
+
+
+/* UniPG>> */
+#ifdef USE_JPWL
+	/** enables writing of EPC in MH, thus activating JPWL */
+	opj_bool epc_on;
+	/** enables writing of EPB, in case of activated JPWL */
+	opj_bool epb_on;
+	/** enables writing of ESD, in case of activated JPWL */
+	opj_bool esd_on;
+	/** enables writing of informative techniques of ESD, in case of activated JPWL */
+	opj_bool info_on;
+	/** enables writing of RED, in case of activated JPWL */
+	opj_bool red_on;
+	/** error protection method for MH (0,1,16,32,37-128) */
+	int hprot_MH;
+	/** tile number of header protection specification (>=0) */
+	int hprot_TPH_tileno[JPWL_MAX_NO_TILESPECS];
+	/** error protection methods for TPHs (0,1,16,32,37-128) */
+	int hprot_TPH[JPWL_MAX_NO_TILESPECS];
+	/** tile number of packet protection specification (>=0) */
+	int pprot_tileno[JPWL_MAX_NO_PACKSPECS];
+	/** packet number of packet protection specification (>=0) */
+	int pprot_packno[JPWL_MAX_NO_PACKSPECS];
+	/** error protection methods for packets (0,1,16,32,37-128) */
+	int pprot[JPWL_MAX_NO_PACKSPECS];
+	/** enables writing of ESD, (0/2/4 bytes) */
+	int sens_size;
+	/** sensitivity addressing size (0=auto/2/4 bytes) */
+	int sens_addr;
+	/** sensitivity range (0-3) */
+	int sens_range;
+	/** sensitivity method for MH (-1,0-7) */
+	int sens_MH;
+	/** tile number of sensitivity specification (>=0) */
+	int sens_TPH_tileno[JPWL_MAX_NO_TILESPECS];
+	/** sensitivity methods for TPHs (-1,0-7) */
+	int sens_TPH[JPWL_MAX_NO_TILESPECS];
+	/** enables JPWL correction at the decoder */
+	opj_bool correct;
+	/** expected number of components at the decoder */
+	int exp_comps;
+	/** maximum number of tiles at the decoder */
+	int max_tiles;
+#endif /* USE_JPWL */
+
+	/******** FLAGS *********/
+	/** if ppm == 1 --> there was a PPM marker*/
+	OPJ_UINT32 ppm : 1;
+	/** tells if the parameter is a coding or decoding one */
+	OPJ_UINT32 m_is_decoder : 1;
+/* <<UniPG */
+} opj_cp_v2_t;
+
+
+typedef struct opj_j2k_dec
+{
+	/** locate in which part of the codestream the decoder is (main header, tile header, end) */
+	OPJ_UINT32 m_state;
+	/**
+	 * store decoding parameters common to all tiles (information like COD, COC in main header)
+	 */
+	opj_tcp_v2_t *m_default_tcp;
+	OPJ_BYTE  *m_header_data;
+	OPJ_UINT32 m_header_data_size;
+	/** to tell the tile part length */
+	OPJ_UINT32 m_sot_length;
+	/** Only tiles index in the correct range will be decoded.*/
+	OPJ_UINT32 m_start_tile_x;
+	OPJ_UINT32 m_start_tile_y;
+	OPJ_UINT32 m_end_tile_x;
+	OPJ_UINT32 m_end_tile_y;
+	/** to tell that a tile can be decoded. */
+	OPJ_UINT32 m_can_decode			: 1;
+	OPJ_UINT32 m_discard_tiles		: 1;
+	OPJ_UINT32 m_skip_data			: 1;
+
+} opj_j2k_dec_t;
+
+typedef struct opj_j2k_enc
+{
+	/** Tile part number, regardless of poc, for each new poc, tp is reset to 1*/
+	OPJ_UINT32 m_current_poc_tile_part_number; // tp_num
+
+	/** Tile part number currently coding, taking into account POC. m_current_tile_part_number holds the total number of tile parts while encoding the last tile part.*/
+	OPJ_UINT32 m_current_tile_part_number; //cur_tp_num
+
+	/**
+	locate the start position of the TLM marker
+	after encoding the tilepart, a jump (in j2k_write_sod) is done to the TLM marker to store the value of its length.
+	*/
+	OPJ_SIZE_T m_tlm_start;
+	/**
+	 * Stores the sizes of the tlm.
+	 */
+	OPJ_BYTE * m_tlm_sot_offsets_buffer;
+	/**
+	 * The current offset of the tlm buffer.
+	 */
+	OPJ_BYTE * m_tlm_sot_offsets_current;
+
+	/** Total num of tile parts in whole image = num tiles* num tileparts in each tile*/
+	/** used in TLMmarker*/
+	OPJ_UINT32 m_total_tile_parts;	 // totnum_tp
+
+	/* encoded data for a tile */
+	OPJ_BYTE * m_encoded_tile_data;
+
+	/* size of the encoded_data */
+	OPJ_UINT32 m_encoded_tile_size;
+
+	/* encoded data for a tile */
+	OPJ_BYTE * m_header_tile_data;
+
+	/* size of the encoded_data */
+	OPJ_UINT32 m_header_tile_data_size;
+
+
+} opj_j2k_enc_t;
+
 /**
 JPEG-2000 codestream reader/writer
 */
@@ -368,6 +739,54 @@ typedef struct opj_j2k {
 	opj_cio_t *cio;
 } opj_j2k_t;
 
+struct opj_tcd_v2;
+/**
+JPEG-2000 codestream reader/writer
+*/
+typedef struct opj_j2k_v2
+{
+	/* J2K codestream is decoded*/
+	opj_bool m_is_decoder;
+
+	/* FIXME DOC*/
+	union
+	{
+		opj_j2k_dec_t m_decoder;
+		opj_j2k_enc_t m_encoder;
+	}
+	m_specific_param;
+
+	/** number of the tile curently concern by coding/decoding */
+	OPJ_UINT32 m_current_tile_number;
+
+	/** pointer to the encoded / decoded image */
+	//opj_image_t *m_image;
+	opj_image_header_t* m_image_header;
+
+	/** Coding parameters */
+	opj_cp_v2_t m_cp;
+
+	/** the list of procedures to exec **/
+	struct opj_procedure_list *	m_procedure_list;
+
+	/** the list of validation procedures to follow to make sure the code is valid **/
+	struct opj_procedure_list *	m_validation_list;
+
+	/** helper used to write the index file */
+	opj_codestream_index_t *cstr_index;
+
+	/** the current tile coder/decoder **/
+	struct opj_tcd_v2 *	m_tcd;
+	//opj_tcd_v2_t *	m_tcd;
+
+
+
+}
+opj_j2k_v2_t;
+
+
+
+
 /** @name Exported functions */
 /*@{*/
 /* ----------------------------------------------------------------------- */
@@ -389,6 +808,9 @@ Decoding parameters are returned in j2k->cp.
 @param parameters decompression parameters
 */
 void j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters);
+
+void j2k_setup_decoder_v2(opj_j2k_v2_t *j2k, opj_dparameters_t *parameters);
+
 /**
 Decode an image from a JPEG-2000 codestream
 @param j2k J2K decompressor handle
@@ -411,6 +833,14 @@ Creates a J2K compression structure
 @return Returns a handle to a J2K compressor if successful, returns NULL otherwise
 */
 opj_j2k_t* j2k_create_compress(opj_common_ptr cinfo);
+
+/**
+Creates a J2K compression structure
+@param cinfo Codec context info
+@return Returns a handle to a J2K compressor if successful, returns NULL otherwise
+*/
+opj_j2k_v2_t* j2k_create_compress_v2();
+
 /**
 Destroy a J2K compressor handle
 @param j2k J2K compressor handle to destroy
@@ -436,12 +866,150 @@ Encode an image into a JPEG-2000 codestream
 @param cstr_info Codestream information structure if required, NULL otherwise
 @return Returns true if successful, returns false otherwise
 */
-bool j2k_encode(opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info);
+opj_bool j2k_encode(opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info);
 
-void j2k_dump_cp(FILE *fd, opj_image_t * img, opj_cp_t * cp);
 /* ----------------------------------------------------------------------- */
 /*@}*/
 
 /*@}*/
 
+/**
+ * Ends the decompression procedures and possibiliy add data to be read after the
+ * codestream.
+ */
+opj_bool j2k_end_decompress(opj_j2k_v2_t *j2k, struct opj_stream_private *cio, struct opj_event_mgr * p_manager);
+
+/**
+ * Reads a jpeg2000 codestream header structure.
+ *
+ * @param cio the stream to read data from.
+ * @param p_j2k the jpeg2000 codec.
+ * @param p_manager the user event manager.
+ *
+ * @return true if the box is valid.
+ */
+opj_bool j2k_read_header(	struct opj_stream_private *p_stream,
+							opj_j2k_v2_t* p_j2k,
+							opj_image_header_t* p_img_header,
+							struct opj_event_mgr* p_manager );
+
+
+/**
+ * Destroys a jpeg2000 codec.
+ *
+ * @param	p_j2k	the jpeg20000 structure to destroy.
+ */
+void j2k_destroy (opj_j2k_v2_t *p_j2k);
+
+/**
+ * Decode tile data.
+ * @param	p_j2k		the jpeg2000 codec.
+ * @param	p_stream			the stream to write data to.
+ * @param	p_manager	the user event manager.
+ */
+opj_bool j2k_decode_tile (
+					opj_j2k_v2_t * p_j2k,
+					OPJ_UINT32 p_tile_index,
+					OPJ_BYTE * p_data,
+					OPJ_UINT32 p_data_size,
+					struct opj_stream_private *p_stream,
+					struct opj_event_mgr * p_manager
+					);
+
+/**
+ * Reads a tile header.
+ * @param	p_j2k		the jpeg2000 codec.
+ * @param	p_stream			the stream to write data to.
+ * @param	p_manager	the user event manager.
+ */
+opj_bool j2k_read_tile_header (
+					 opj_j2k_v2_t * p_j2k,
+					 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_go_on,
+					 struct opj_stream_private *p_stream,
+					 struct opj_event_mgr * p_manager
+					);
+
+
+/**
+ * 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_j2k			the jpeg2000 codec.
+ * @param	p_start_x		the left 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_start_y		the up 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 j2k_set_decode_area(	opj_j2k_v2_t *p_j2k,
+								OPJ_INT32 p_start_x, OPJ_INT32 p_start_y,
+								OPJ_INT32 p_end_x, OPJ_INT32 p_end_y,
+								struct opj_event_mgr * p_manager );
+
+/**
+ * Creates a J2K decompression structure.
+ *
+ * @return a handle to a J2K decompressor if successful, NULL otherwise.
+ */
+opj_j2k_v2_t* j2k_create_decompress_v2();
+
+
+/**
+ * Dump some elements from the J2K decompression structure .
+ *
+ *@param p_j2k				the jpeg2000 codec.
+ *@param flag				flag to describe what elments are dump.
+ *@param out_stream			output stream where dump the elements.
+ *
+*/
+void j2k_dump (opj_j2k_v2_t* p_j2k, OPJ_INT32 flag, FILE* out_stream);
+
+
+
+/**
+ * Dump an image header structure.
+ *
+ *@param img_header			the image header to dump.
+ *@param dev_dump_flag		flag to describe if we are in the case of this function is use outside j2k_dump function
+ *@param out_stream			output stream where dump the elements.
+ */
+void j2k_dump_image_header(opj_image_header_t* img_header, opj_bool dev_dump_flag, FILE* out_stream);
+
+/**
+ * Dump a component image header structure.
+ *
+ *@param comp_header		the component image header to dump.
+ *@param dev_dump_flag		flag to describe if we are in the case of this function is use outside j2k_dump function
+ *@param out_stream			output stream where dump the elements.
+ */
+void j2k_dump_image_comp_header(opj_image_comp_header_t* comp_header, opj_bool dev_dump_flag, FILE* out_stream);
+
+/**
+ * Get the codestream info from a JPEG2000 codec.
+ *
+ *@param	p_j2k				the component image header to dump.
+ *
+ *@return	the codestream information extract from the jpg2000 codec
+ */
+opj_codestream_info_v2_t* j2k_get_cstr_info(opj_j2k_v2_t* p_j2k);
+
+/**
+ * Get the codestream index from a JPEG2000 codec.
+ *
+ *@param	p_j2k				the component image header to dump.
+ *
+ *@return	the codestream index extract from the jpg2000 codec
+ */
+opj_codestream_index_t* j2k_get_cstr_index(opj_j2k_v2_t* p_j2k);
+
+
+
 #endif /* __J2K_H */