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News Overview Download Order F.A.Q. More info Support Links Welcome QuickStart ActiveX Control C++ Wrapper J2K_Image open easyDecode selectTiles getCustomData decode close J2K_Frames open getFrames getFrame operators close API Reference General getVersion getLastError getErrorStr getLastErrorStr Unlock Open / Close Open Close Info GetInfo GetInfoEx GetResolutions GetResDimensions •GetCustomData Decoding EasyDecode SelectTiles Decode Cancel Debug StartLogging StopLogging |
J2K_GetCustomData Use this function only if you need to extract some additional custom data, embedded into JP2 files. int J2K_GetCustomData(void *image, int *no, int *type, unsigned char **data, int *size); Parameters image A pointer, obtained from J2K_Open(). no The custom data block number. Set to 0 to start enumeration from the beginning. Each call will automatically advance it. type Type of the custom data block. This version of J2K-Codec supports only 1 type: JP2_CDATA_GEOTIFF. data Points to the variable where the custom data pointer will be placed. If that pointer is NULL, then there are no more custom data blocks. size Size of the custom data block.
Return value Returns J2KERR_SUCCESS or an error code if the function has failed. See the list of error codes here. Notes See "i_GeoTIFF" sample for more information. Example
unsigned char *geo_data; int geo_type, geo_size, no=0; J2K_Open() |
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