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kdu_resolution access_resolution( int res_level)
Java: Kdu_resolution Access_resolution( int res_level)
[Declared in "../coresys/common/kdu_compressed.h"]
Returns an interface to a particular resolution level of the tile-component, within the internal code-stream management machinery. Generates an error (through kdu_error) if the indicated resolution level does not exist. Specifically, if res_level+ discard_levels exceeds the number of DWT levels for this component, an error will be generated, where discard_levels is the value supplied in any call to kdu_codestream::apply_input_restrictions, or else 0.
A value of 0 refers to the lowest resolution level, corresponding to the LL subband of the tile-component's DWT. Successively larger values for res_level return interfaces to successively higher resolutions, each essentially twice as wide and twice as high. Use the second form of this overloaded function if you want to access the tile-component's highest resolution level.