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pdf: Add a --render-bench option

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It's similar to `--render <filename>.png`, but skips the "save to
file" step. Useful for benchmarking, in part because our png codec
is so slow.
This commit is contained in:
Nico Weber 2024-02-18 22:13:30 -05:00 committed by Sam Atkins
parent be9ec591e7
commit 6a8e418e40
Notes: sideshowbarker 2024-07-17 07:20:49 +09:00 
Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/6a8e418e40
Pull-request: https://github.com/SerenityOS/serenity/pull/23253
1 changed files with 13 additions and 4 deletions
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17
Userland/Utilities/pdf.cpp
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@ -63,12 +63,16 @@ static PDF::PDFErrorOr<NonnullRefPtr<Gfx::Bitmap>> render_page(PDF::Document& do
return bitmap;
}
static PDF::PDFErrorOr<void> save_rendered_page(PDF::Document& document, int page_index, int repeats, StringView out_path)
static PDF::PDFErrorOr<NonnullRefPtr<Gfx::Bitmap>> render_page_to_memory(PDF::Document& document, int page_index, int repeats)
{
auto bitmap = TRY(render_page(document, page_index));
for (int i = 0; i < repeats - 1; ++i)
(void)TRY(render_page(document, page_index));
return bitmap;
}
static PDF::PDFErrorOr<void> save_rendered_page(NonnullRefPtr<Gfx::Bitmap> bitmap, StringView out_path)
{
if (!out_path.ends_with(".png"sv, CaseSensitivity::CaseInsensitive))
return Error::from_string_view("can only save to .png files"sv);
@ -199,6 +203,9 @@ static PDF::PDFErrorOr<int> pdf_main(Main::Arguments arguments)
StringView render_path;
args_parser.add_option(render_path, "Path to render PDF page to", "render", {}, "FILE.png");
bool render_bench = false;
args_parser.add_option(render_bench, "Render to memory, then throw away result (for profiling)", "render-bench", {});
u32 render_repeats = 1;
args_parser.add_option(render_repeats, "Number of times to render page (for profiling)", "render-repeats", {}, "N");
@ -222,7 +229,7 @@ static PDF::PDFErrorOr<int> pdf_main(Main::Arguments arguments)
TRY(document->initialize());
#if !defined(AK_OS_SERENITY)
if (debugging_stats || !render_path.is_empty()) {
if (debugging_stats || !render_path.is_empty() || render_bench) {
// Get from Build/lagom/bin/pdf to Build/lagom/Root/res.
auto source_root = LexicalPath(MUST(Core::System::current_executable_path())).parent().parent().string();
Core::ResourceImplementation::install(make<Core::ResourceImplementationFile>(TRY(String::formatted("{}/Root/res", source_root))));
@ -253,8 +260,10 @@ static PDF::PDFErrorOr<int> pdf_main(Main::Arguments arguments)
return 0;
}
if (!render_path.is_empty()) {
TRY(save_rendered_page(document, page_index, render_repeats, render_path));
if (!render_path.is_empty() || render_bench) {
auto bitmap = TRY(render_page_to_memory(document, page_index, render_repeats));
if (!render_path.is_empty())
TRY(save_rendered_page(move(bitmap), render_path));
return 0;
}