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Only do JPEGing then quality set < 100

This commit is contained in:
John Whitington 2023-12-27 20:01:06 +00:00
parent 66cc20b87f
commit 94cb707dd9
1 changed files with 6 additions and 3 deletions
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9
cpdfimage.ml
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@ -647,18 +647,21 @@ let process
with
| Some (Pdf.Name "/Image"), Some (Pdf.Name "/DCTDecode" | Pdf.Array [Pdf.Name "/DCTDecode"]), _, _ ->
begin match q with
| Some q -> jpeg_to_jpeg pdf ~pixel_threshold ~q ~path_to_convert s dict reference
| Some q ->
if q < 100 then jpeg_to_jpeg pdf ~pixel_threshold ~q ~path_to_convert s dict reference
| None -> ()
end
| Some (Pdf.Name "/Image"), _, Some (Pdf.Integer 1), _
| Some (Pdf.Name "/Image"), _, _, Some (Pdf.Boolean true) ->
begin match onebppmethod with
| Some "JBIG2" -> recompress_1bpp_jbig2_lossless ~pixel_threshold ~path_to_jbig2enc pdf s dict reference
| Some "JBIG2" ->
recompress_1bpp_jbig2_lossless ~pixel_threshold ~path_to_jbig2enc pdf s dict reference
| _ -> ()
end
| Some (Pdf.Name "/Image"), _, _, _ ->
begin match qlossless with
| Some qlossless -> lossless_to_jpeg pdf ~pixel_threshold ~qlossless ~path_to_convert s dict reference
| Some qlossless ->
if qlossless < 100 then lossless_to_jpeg pdf ~pixel_threshold ~qlossless ~path_to_convert s dict reference
| None -> ()
end
| _ -> () (* not an image *)