THotPDF.DecodeLoadedImageStream Method

Method summary: THotPDF.DecodeLoadedImageStream MethodTBitmap, including supported filter and colour-space processing

Declaration

function DecodeLoadedImageStream(AImageStream: THPDFStreamObject): TBitmap;

HPDFDoc

Name	Purpose
`AImageStream`	Loaded PDF stream object containing image data

Bitmap containing the decoded imageTBitmap on success or nil when the image format or geometry is unsupported

Use this API with stream objects returned by loaded-document inspection workflows
The caller owns the returned bitmap instanceDecodeParms or DP
LZW decoding honours EarlyChange and rejects invalid dictionary transitions instead of treating compressed bytes as pixels
TIFF Predictor 2 and PNG predictors 10 through 15 are supported for complete rows with valid image geometry
Width, height, component count, bit depth, row size, and output size are checked before raster allocation
Malformed Flate, LZW, or predictor data raises its decoding exception so callers can distinguish corruption from an unsupported image format
Use ExtractLoadedImage when selecting images by the index returned from loaded-image enumeration