Returns the embedded image's decoded pixel buffer as a
pdf_render_page()-compatible pdfium_bitmap. Wraps
FPDFImageObj_GetBitmap, which decodes the source stream but does
not apply the page's coordinate transformation - the bitmap is the
raw source raster, oriented in the image's own coordinate system.
Value
A pdfium_bitmap (integer matrix with class
c("pdfium_bitmap", "nativeRaster"), dim = c(height, width))
carrying attributes dpi = NA_real_ (the source image's DPI is
in pdf_image_info() but doesn't apply to this raw raster),
source_page, source_path, and rotation_applied = 0L. Use
as.array.pdfium_bitmap() / as.raster.pdfium_bitmap() to
convert to other shapes.
See also
pdf_image_rendered() for the CTM-applied rendering,
pdf_image_data() for the raw embedded stream bytes.