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Change command structure for -output-image

This commit is contained in:
John Whitington 2024-11-28 18:56:32 +00:00
parent c8c8ddcae9
commit 7c0b52a0fa
3 changed files with 10 additions and 9 deletions
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11
cpdfcommand.ml
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@ -231,7 +231,7 @@ type op =
| SetLanguage of string
| Redact
| Rasterize
| OutputImage of string
| OutputImage
let string_of_op = function
| PrintFontEncoding _ -> "PrintFontEncoding"
@ -386,7 +386,7 @@ let string_of_op = function
| SetLanguage _ -> "SetLanguage"
| Redact -> "Redact"
| Rasterize -> "Rasterize"
| OutputImage _ -> "OutputImage"
| OutputImage -> "OutputImage"
(* Inputs: filename, pagespec. *)
type input_kind =
@ -948,7 +948,7 @@ let banned banlist = function
| OCGRename | OCGList | OCGOrderAll | PrintFontEncoding _ | TableOfContents | Typeset _ | Composition _
| TextWidth _ | SetAnnotations _ | CopyAnnotations _ | ExtractStream _ | PrintObj _ | ReplaceObj _
| Verify _ | MarkAs _ | RemoveMark _ | ExtractStructTree | ReplaceStructTree _ | SetLanguage _
| PrintStructTree | Rasterize | OutputImage _
| PrintStructTree | Rasterize | OutputImage
-> false (* Always allowed *)
(* Combine pages is not allowed because we would not know where to get the
-recrypt from -- the first or second file? *)
@ -3022,7 +3022,7 @@ let specs =
("-rasterize-no-antialias", Arg.Unit (fun () -> args.rast_antialias <- false), " Don't antialias when rasterizing");
("-rasterize-downsample", Arg.Unit (fun () -> args.rast_downsample <- true), " Antialias by downsampling");
("-rasterize-jpeg-quality", Arg.Int (fun i -> args.rast_jpeg_quality <- i), " Set JPEG quality");
("-output-image", Arg.String (fun s -> args.op <- Some (OutputImage s)), " Output pages as PNGs");
("-output-image", Arg.Unit (fun () -> args.op <- Some OutputImage), " Output pages as images");
(* These items are undocumented *)
("-debug", Arg.Unit setdebug, "");
("-debug-crypt", Arg.Unit (fun () -> args.debugcrypt <- true), "");
@ -4894,7 +4894,8 @@ let go () =
let pdf = get_single_pdf args.op false in
let range = parse_pagespec_allow_empty pdf (get_pagespec ()) in
write_pdf false (rasterize args.rast_antialias args.rast_downsample args.rast_device args.rast_res args.rast_annots args.rast_jpeg_quality pdf range)
| Some (OutputImage spec) ->
| Some OutputImage ->
let spec = match args.out with File spec -> spec | _ -> error "Output must be to a file" in
let pdf = get_single_pdf args.op false in
let range = parse_pagespec_allow_empty pdf (get_pagespec ()) in
write_images args.rast_device args.rast_res args.rast_jpeg_quality args.tobox args.rast_annots args.rast_antialias args.rast_downsample spec pdf range

BIN
cpdfmanual.pdf
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8
cpdfmanual.tex
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@ -3837,7 +3837,7 @@ The \texttt{-dump-attachments} operation, when given a PDF file and a directory
\vspace{1.5mm}
\noindent\small\verb!cpdf -output-image <format> in.pdf <range>!\\
\noindent\small\verb!cpdf -output-image in.pdf <range> -o <format>!\\
\noindent\small\verb! [-rasterize[-gray|-1bpp|-jpeg|-jpeggray]!\\
\noindent\small\verb! [-rasterize-res <n>] [-rasterize-jpeg-quality <n>]!\\
\noindent\small\verb! [-rasterize-no-antialias | -rasterize-downsample]!
@ -4085,7 +4085,7 @@ Option & Effect\\\hline
\noindent In addition to rasterization of pages, we can export them in PNG or JPEG format, again by the use of GhostScript:
\begin{framed}
\noindent\small\verb!cpdf -gs gs -output-image image%%%.png in.pdf 10-end!
\noindent\small\verb!cpdf -gs gs -output-image in.pdf 10-end -o image%%%.png!
\end{framed}
\noindent This will extract pages 10 onwards to the files \texttt{image000.png}, \texttt{image001.png} and so on. All the options above apply, and in addition we can choose which box is rasterized:
@ -4100,8 +4100,8 @@ Option & Effect\\\hline
\noindent For example:
\begin{framed}
\noindent\small\verb!cpdf -gs gs -output-image image%%%.jpeg -tobox /BleedBox!\\
\noindent\small\verb! -rasterization-jpeg in.pdf!
\noindent\small\verb!cpdf -gs gs -output-image -tobox /BleedBox!\\
\noindent\small\verb! -rasterization-jpeg in.pdf -o image%%%.jpeg!
\end{framed}