THPDFJpegReducedDecodeInfo

Reports source, inverse-DCT, output, scanline and memory geometry for a reduced JPEG request

Fields

SourceWidth and SourceHeight are the encoded JPEG dimensions
DCTWidth and DCTHeight are the decoder-reported dimensions after inverse-DCT scaling
OutputWidth and OutputHeight are the exact target bitmap dimensions
ScaleDenominator is 1, 2, 4, or 8
DecodedScanlines counts scaled source rows consumed by the streaming resampler
WorkingBytes reports bounded transient row and accumulator storage
FullResolutionRasterBytes, DCTRasterBytes, and OutputRasterBytes expose comparable BGR24 size estimates
UsedReducedDCT confirms that the denominator is greater than 1
UsedStreamingResampler confirms direct scanline-to-target resampling
Valid confirms that the record describes an initialised request