#define JPWL_MAXIMUM_EPB_ROOM 65450 /**< Expect this maximum number of bytes for composition of EPBs */
/* <<UniPG */
+/**
+Supported options about file information
+*/
+#define OPJ_NO_INFO 0x0 /**< No information provied to the user */
+#define OPJ_IMG_INFO 0x1 /**< Basic image information provided to the user */
+#define OPJ_J2K_INFO 0x2 /**< J2K codestream information provided to the user */
+#define OPJ_JP2_INFO 0x4 /**< JP2 file information provided to the user */
+
+
/*
==========================================================
enum definitions
DECODE_ALL_BUT_PACKETS = 2 /**< Decode everything except the JPEG 2000 packets */
} OPJ_LIMIT_DECODING;
+
+
+
/*
==========================================================
event manager typedef definitions
*/
OPJ_LIMIT_DECODING cp_limit_decoding;
+
+ /* V2 */
+ OPJ_UINT32 ROI_x0;
+ OPJ_UINT32 ROI_x1;
+ OPJ_UINT32 ROI_y0;
+ OPJ_UINT32 ROI_y1;
+
+
} opj_dparameters_t;
/** Common fields between JPEG-2000 compression and decompression master structs. */
/** image components */
opj_image_comp_header_t *comps;
+#ifdef TODO_MSD
/** XTOsiz */
OPJ_UINT32 tile_x0;
/** YTOsiz */
OPJ_UINT32 nb_tiles_x;
/** number of tiles in height */
OPJ_UINT32 nb_tiles_y;
+#endif
/** 'restricted' ICC profile */
unsigned char *icc_profile_buf;
// NEW codestream
+/**
+Tile-component coding parameters
+*/
+typedef struct opj_tccp_info
+{
+ /** component index */
+ OPJ_UINT32 compno;
+ /** coding style */
+ OPJ_UINT32 csty;
+ /** number of resolutions */
+ OPJ_UINT32 numresolutions;
+ /** code-blocks width */
+ OPJ_UINT32 cblkw;
+ /** code-blocks height */
+ OPJ_UINT32 cblkh;
+ /** code-block coding style */
+ OPJ_UINT32 cblksty;
+ /** discrete wavelet transform identifier */
+ OPJ_UINT32 qmfbid;
+ /** quantisation style */
+ OPJ_UINT32 qntsty;
+ /** stepsizes used for quantization */
+ //FIXME opj_stepsize_t stepsizes[J2K_MAXBANDS];
+ /** number of guard bits */
+ OPJ_UINT32 numgbits;
+ /** Region Of Interest shift */
+ OPJ_INT32 roishift;
+ /** precinct width */
+ OPJ_UINT32 prcw[J2K_MAXRLVLS];
+ /** precinct height */
+ OPJ_UINT32 prch[J2K_MAXRLVLS];
+}
+opj_tccp_info_t;
+
typedef struct opj_tile_v2_info {
- /** number of tile */
+ /** number (index) of tile */
int tileno;
/** start position */
/** add fixed_quality */
double distotile;
+ /** coding style */
+ OPJ_UINT32 csty;
+ /** progression order */
+ OPJ_PROG_ORDER prg;
+ /** number of layers */
+ OPJ_UINT32 numlayers;
+ /** multi-component transform identifier */
+ OPJ_UINT32 mct;
+ /** rates of layers */
+ OPJ_FLOAT32 rates[100];
+
/** precinct number for each resolution level (width) */
int pw[33];
/** precinct number for each resolution level (height) */
/** information concerning tile parts */
opj_tp_info_t *tp;
+ /** information concerning tile component parameters*/
+ opj_tccp_info_t *tccp_info;
+
/** value of thresh for each layer by tile cfr. Marcela */
- double *thresh;
+ double *thresh;
} opj_tile_info_v2_t;
/**
Index structure of the codestream
*/
-typedef struct opj_codestream_v2_info {
+typedef struct opj_codestream_info_v2 {
+ /* Basic image info */
/** image width */
int image_w;
/** image height */
/** numbers of component */
int numcomps;
+ /* Codestream Info */
/** progression order */
OPJ_PROG_ORDER prog;
/** number of layer */
int numlayers;
- /** */
+ /** tile origin in x */
int tx0;
- /** */
+ /** tile origin in y */
int ty0;
/** tile size in x */
int tdx;
opj_tile_info_v2_t *tile;
} opj_codestream_info_v2_t;
+
+/*
+==========================================================
+ Metadata from the JP2file
+==========================================================
+*/
+
+/**
+Info structure of the file
+*/
+typedef struct opj_jp2_metadata {
+ /** */
+ OPJ_INT32 empty_fields;
+
+} opj_jp2_metadata_t;
+
+/*
+==========================================================
+ Information on the JPEG2000 file
+==========================================================
+*/
+
+/**
+Info structure of the file
+*/
+typedef struct opj_file_info {
+ /** file format */
+ OPJ_INT32 file_format;
+ /** file info level*/
+ OPJ_INT32 file_info_flag;
+ /** image info*/
+ opj_image_header_t img_info;
+ /** codestream info */
+ opj_codestream_info_v2_t codestream_info;
+ /** file info */
+ opj_jp2_metadata_t jp2_metadata;
+
+} opj_file_info_t;
+
+
+
#ifdef __cplusplus
extern "C" {
#endif
*/
OPJ_API void OPJ_CALLCONV opj_image_destroy(opj_image_t *image);
-OPJ_API void OPJ_CALLCONV opj_image_header_destroy(opj_image_header_t *image);
+OPJ_API void OPJ_CALLCONV opj_image_header_destroy(opj_image_header_t *image_header);
/*
==========================================================
*/
OPJ_API opj_bool OPJ_CALLCONV opj_read_header ( opj_stream_t *p_cio,
opj_codec_t *p_codec,
- opj_image_header_t **p_image_header,
- opj_codestream_info_t **p_cstr_info );
+ opj_file_info_t * p_file_info,
+ OPJ_INT32 file_info_flag);
/**
Destroy a decompressor handle
*/
OPJ_API void OPJ_CALLCONV opj_destroy_codec(opj_codec_t * p_codec);
+/**
+ * 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_codec 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).
+ *
+ * @return true if the area could be set.
+ */
+OPJ_API opj_bool OPJ_CALLCONV opj_set_decode_area( opj_codec_t *p_codec,
+ OPJ_INT32 p_start_x, OPJ_INT32 p_start_y,
+ OPJ_INT32 p_end_x, OPJ_INT32 p_end_y );
+
+/**
+ * Reads a tile header. This function is compulsory and allows one to know the size of the tile thta will be decoded.
+ * The user may need to refer to the image got by opj_read_header to understand the size being taken by the tile.
+ *
+ * @param p_codec the jpeg2000 codec.
+ * @param p_tile_index pointer to a value that will hold the index of the tile being decoded, in case of success.
+ * @param p_data_size pointer to a value that will hold the maximum size of the decoded data, in case of success. In case
+ * of truncated codestreams, the actual number of bytes decoded may be lower. The computation of the size is the same
+ * as depicted in opj_write_tile.
+ * @param p_tile_x0 pointer to a value that will hold the x0 pos of the tile (in the image).
+ * @param p_tile_y0 pointer to a value that will hold the y0 pos of the tile (in the image).
+ * @param p_tile_x1 pointer to a value that will hold the x1 pos of the tile (in the image).
+ * @param p_tile_y1 pointer to a value that will hold the y1 pos of the tile (in the image).
+ * @param p_nb_comps pointer to a value that will hold the number of components in the tile.
+ * @param p_should_go_on pointer to a boolean that will hold the fact that the decoding should go on. In case the
+ * codestream is over at the time of the call, the value will be set to false. The user should then stop
+ * the decoding.
+ * @param p_stream the stream to decode.
+ * @return true if the tile header could be decoded. In case the decoding should end, the returned value is still true.
+ * returning false may be the result of a shortage of memory or an internal error.
+ */
+OPJ_API opj_bool OPJ_CALLCONV opj_read_tile_header( opj_codec_t *p_codec,
+ opj_stream_t * p_stream,
+ 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 );
+
#ifdef __cplusplus
}
#endif
#endif /* OPENJPEG_H */
+
+
projects / openjpeg.git / blobdiff