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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 getMetaData 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 GetMetaData Decoding •EasyDecode SelectTiles Decode Cancel Debug StartLogging StopLogging |
J2K_EasyDecode You can use this "1-Call" shortcut to quickly add the decoding capabilities to your program. void* J2K_EasyDecode(char *filename, unsigned char **buffer, int *width, int *height, int *components, char *options); Parameters filename Name of a JPEG 2000 image file. buffer Pointer to a variable, where the address of the memory buffer with decoded image will be places. width Pointer to a variable, where the width of the image will be placed. height Pointer to a variable, where the height of the image will be placed. components Pointer to a variable, where the number of components in the image will be placed. options Options string. See the list of valid options here.
Return value Returns a pointer to an internal object, which represents J2K image or NULL if the function has failed. Use J2K_getLastError() to obtain the error code. Notes 1. You must not free the buffer yourself. Instead, pass the returned pointer to J2K_Close() and it will do all required cleanup. 2. Unlike C++ Wrapper's easyDecode(), which allows using an external buffer, this function doesn't. The buffer is always allocated inside. Example
int width, height, components; unsigned char *buffer=0; int size; List of options |
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