THPDFJPEG2000Progression Type

Selects the JPEG 2000 codestream progression order used whilst re-encoding JPX images

Declaration

THPDFJPEG2000Progression= (j2prLRCP, j2prRLCP, j2prRPCL, j2prPCRL,
  j2prCPRL);

HPDFDoc

Value	Meaning
`j2prLRCP`	Quality-layer, resolution, component, position order: quality progressive, the customary choice for gradual refinement
`j2prRLCP`	Resolution, quality-layer, component, position order: resolution progressive
`j2prRPCL`	Resolution, position, component, quality-layer order: resolution progressive with position grouping
`j2prPCRL`	Position, component, resolution, quality-layer order: position progressive, handy for panning over a large image
`j2prCPRL`	Component, position, resolution, quality-layer order: component progressive, well suited to multi-component data

Pass a value of this type as the Progression parameter of THotPDF.OptimizeLoadedJPEG2000Images; the value maps one-to-one onto the encoder's progression order (LRCP, RLCP, RPCL, PCRL, CPRL)
The progression order changes how a truncated codestream renders rather than the decoded pixels of a complete file, so it is a delivery characteristic and not a quality setting
Internal preview encodes that take no explicit parameter use j2prLRCP