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https://github.com/LadybirdBrowser/ladybird.git
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320 lines
14 KiB
C++
320 lines
14 KiB
C++
/*
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* Copyright (c) 2023, Nico Weber <thakis@chromium.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCore/ArgsParser.h>
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#include <LibCore/File.h>
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#include <LibCore/MappedFile.h>
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#include <LibGfx/ICC/Profile.h>
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#include <LibGfx/ImageFormats/BMPWriter.h>
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#include <LibGfx/ImageFormats/GIFWriter.h>
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#include <LibGfx/ImageFormats/ImageDecoder.h>
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#include <LibGfx/ImageFormats/JPEGWriter.h>
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#include <LibGfx/ImageFormats/PNGWriter.h>
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#include <LibGfx/ImageFormats/WebPSharedLossless.h>
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#include <LibGfx/ImageFormats/WebPWriter.h>
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using AnyBitmap = Variant<RefPtr<Gfx::Bitmap>, RefPtr<Gfx::CMYKBitmap>>;
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struct LoadedImage {
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Gfx::NaturalFrameFormat internal_format;
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AnyBitmap bitmap;
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Optional<ReadonlyBytes> icc_data;
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};
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static ErrorOr<LoadedImage> load_image(RefPtr<Gfx::ImageDecoder> const& decoder, int frame_index)
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{
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auto internal_format = decoder->natural_frame_format();
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auto bitmap = TRY([&]() -> ErrorOr<AnyBitmap> {
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switch (internal_format) {
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case Gfx::NaturalFrameFormat::RGB:
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case Gfx::NaturalFrameFormat::Grayscale:
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case Gfx::NaturalFrameFormat::Vector:
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return TRY(decoder->frame(frame_index)).image;
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case Gfx::NaturalFrameFormat::CMYK:
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return RefPtr(TRY(decoder->cmyk_frame()));
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}
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VERIFY_NOT_REACHED();
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}());
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return LoadedImage { internal_format, move(bitmap), TRY(decoder->icc_data()) };
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}
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static ErrorOr<void> invert_cmyk(LoadedImage& image)
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{
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if (!image.bitmap.has<RefPtr<Gfx::CMYKBitmap>>())
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return Error::from_string_view("Can't --invert-cmyk with RGB bitmaps"sv);
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auto& frame = image.bitmap.get<RefPtr<Gfx::CMYKBitmap>>();
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for (auto& pixel : *frame) {
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pixel.c = ~pixel.c;
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pixel.m = ~pixel.m;
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pixel.y = ~pixel.y;
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pixel.k = ~pixel.k;
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}
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return {};
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}
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static ErrorOr<void> crop_image(LoadedImage& image, Gfx::IntRect const& rect)
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{
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if (!image.bitmap.has<RefPtr<Gfx::Bitmap>>())
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return Error::from_string_view("Can't --crop CMYK bitmaps yet"sv);
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auto& frame = image.bitmap.get<RefPtr<Gfx::Bitmap>>();
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frame = TRY(frame->cropped(rect));
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return {};
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}
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static ErrorOr<void> move_alpha_to_rgb(LoadedImage& image)
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{
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if (!image.bitmap.has<RefPtr<Gfx::Bitmap>>())
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return Error::from_string_view("Can't --move-alpha-to-rgb with CMYK bitmaps"sv);
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auto& frame = image.bitmap.get<RefPtr<Gfx::Bitmap>>();
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switch (frame->format()) {
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case Gfx::BitmapFormat::Invalid:
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return Error::from_string_view("Can't --move-alpha-to-rgb with invalid bitmaps"sv);
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case Gfx::BitmapFormat::RGBA8888:
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// No image decoder currently produces bitmaps with this format.
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// If that ever changes, preferrably fix the image decoder to use BGRA8888 instead :)
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// If there's a good reason for not doing that, implement support for this, I suppose.
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return Error::from_string_view("--move-alpha-to-rgb not implemented for RGBA8888"sv);
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case Gfx::BitmapFormat::BGRA8888:
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case Gfx::BitmapFormat::BGRx8888:
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// FIXME: If BitmapFormat::Gray8 existed (and image encoders made use of it to write grayscale images), we could use it here.
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for (auto& pixel : *frame) {
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u8 alpha = pixel >> 24;
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pixel = 0xff000000 | (alpha << 16) | (alpha << 8) | alpha;
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}
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}
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return {};
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}
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static ErrorOr<void> strip_alpha(LoadedImage& image)
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{
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if (!image.bitmap.has<RefPtr<Gfx::Bitmap>>())
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return Error::from_string_view("Can't --strip-alpha with CMYK bitmaps"sv);
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auto& frame = image.bitmap.get<RefPtr<Gfx::Bitmap>>();
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switch (frame->format()) {
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case Gfx::BitmapFormat::Invalid:
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return Error::from_string_view("Can't --strip-alpha with invalid bitmaps"sv);
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case Gfx::BitmapFormat::RGBA8888:
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// No image decoder currently produces bitmaps with this format.
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// If that ever changes, preferrably fix the image decoder to use BGRA8888 instead :)
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// If there's a good reason for not doing that, implement support for this, I suppose.
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return Error::from_string_view("--strip-alpha not implemented for RGBA8888"sv);
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case Gfx::BitmapFormat::BGRA8888:
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case Gfx::BitmapFormat::BGRx8888:
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frame->strip_alpha_channel();
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}
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return {};
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}
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static ErrorOr<OwnPtr<Core::MappedFile>> convert_image_profile(LoadedImage& image, StringView convert_color_profile_path, OwnPtr<Core::MappedFile> maybe_source_icc_file)
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{
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if (!image.icc_data.has_value())
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return Error::from_string_view("No source color space embedded in image. Pass one with --assign-color-profile."sv);
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auto source_icc_file = move(maybe_source_icc_file);
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auto source_icc_data = image.icc_data.value();
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auto icc_file = TRY(Core::MappedFile::map(convert_color_profile_path));
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image.icc_data = icc_file->bytes();
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auto source_profile = TRY(Gfx::ICC::Profile::try_load_from_externally_owned_memory(source_icc_data));
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auto destination_profile = TRY(Gfx::ICC::Profile::try_load_from_externally_owned_memory(icc_file->bytes()));
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if (destination_profile->data_color_space() != Gfx::ICC::ColorSpace::RGB)
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return Error::from_string_view("Can only convert to RGB at the moment, but destination color space is not RGB"sv);
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if (image.bitmap.has<RefPtr<Gfx::CMYKBitmap>>()) {
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if (source_profile->data_color_space() != Gfx::ICC::ColorSpace::CMYK)
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return Error::from_string_view("Source image data is CMYK but source color space is not CMYK"sv);
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auto& cmyk_frame = image.bitmap.get<RefPtr<Gfx::CMYKBitmap>>();
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auto rgb_frame = TRY(Gfx::Bitmap::create(Gfx::BitmapFormat::BGRx8888, cmyk_frame->size()));
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TRY(destination_profile->convert_cmyk_image(*rgb_frame, *cmyk_frame, *source_profile));
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image.bitmap = RefPtr(move(rgb_frame));
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image.internal_format = Gfx::NaturalFrameFormat::RGB;
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} else {
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// FIXME: This likely wrong for grayscale images because they've been converted to
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// RGB at this point, but their embedded color profile is still for grayscale.
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auto& frame = image.bitmap.get<RefPtr<Gfx::Bitmap>>();
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TRY(destination_profile->convert_image(*frame, *source_profile));
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}
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return icc_file;
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}
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static ErrorOr<void> save_image(LoadedImage& image, StringView out_path, u8 jpeg_quality, Optional<unsigned> webp_allowed_transforms)
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{
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auto stream = [out_path]() -> ErrorOr<NonnullOwnPtr<Core::OutputBufferedFile>> {
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auto output_stream = TRY(Core::File::open(out_path, Core::File::OpenMode::Write));
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return Core::OutputBufferedFile::create(move(output_stream));
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};
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auto& frame = image.bitmap.get<RefPtr<Gfx::Bitmap>>();
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if (out_path.ends_with(".gif"sv, CaseSensitivity::CaseInsensitive)) {
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TRY(Gfx::GIFWriter::encode(*TRY(stream()), *frame));
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return {};
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}
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if (out_path.ends_with(".jpg"sv, CaseSensitivity::CaseInsensitive) || out_path.ends_with(".jpeg"sv, CaseSensitivity::CaseInsensitive)) {
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TRY(Gfx::JPEGWriter::encode(*TRY(stream()), *frame, { .icc_data = image.icc_data, .quality = jpeg_quality }));
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return {};
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}
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if (out_path.ends_with(".webp"sv, CaseSensitivity::CaseInsensitive)) {
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Gfx::WebPWriter::Options options;
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options.icc_data = image.icc_data;
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if (webp_allowed_transforms.has_value())
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options.vp8l_options.allowed_transforms = webp_allowed_transforms.value();
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TRY(Gfx::WebPWriter::encode(*TRY(stream()), *frame, options));
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return {};
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}
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ByteBuffer bytes;
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if (out_path.ends_with(".bmp"sv, CaseSensitivity::CaseInsensitive)) {
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bytes = TRY(Gfx::BMPWriter::encode(*frame, { .icc_data = image.icc_data }));
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} else if (out_path.ends_with(".png"sv, CaseSensitivity::CaseInsensitive)) {
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bytes = TRY(Gfx::PNGWriter::encode(*frame, { .icc_data = image.icc_data }));
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} else {
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return Error::from_string_view("can only write .bmp, .gif, .jpg, .png, and .webp"sv);
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}
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TRY(TRY(stream())->write_until_depleted(bytes));
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return {};
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}
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struct Options {
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StringView in_path;
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StringView out_path;
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bool no_output = false;
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int frame_index = 0;
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bool invert_cmyk = false;
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Optional<Gfx::IntRect> crop_rect;
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bool move_alpha_to_rgb = false;
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bool strip_alpha = false;
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StringView assign_color_profile_path;
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StringView convert_color_profile_path;
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bool strip_color_profile = false;
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u8 quality = 75;
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Optional<unsigned> webp_allowed_transforms;
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};
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template<class T>
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static ErrorOr<Vector<T>> parse_comma_separated_numbers(StringView rect_string)
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{
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auto parts = rect_string.split_view(',');
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Vector<T> part_numbers;
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for (size_t i = 0; i < parts.size(); ++i) {
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auto part = parts[i].to_number<T>();
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if (!part.has_value())
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return Error::from_string_view("comma-separated parts must be numbers"sv);
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TRY(part_numbers.try_append(part.value()));
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}
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return part_numbers;
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}
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static ErrorOr<Gfx::IntRect> parse_rect_string(StringView rect_string)
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{
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auto numbers = TRY(parse_comma_separated_numbers<i32>(rect_string));
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if (numbers.size() != 4)
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return Error::from_string_view("rect must have 4 comma-separated parts"sv);
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return Gfx::IntRect { numbers[0], numbers[1], numbers[2], numbers[3] };
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}
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static ErrorOr<unsigned> parse_webp_allowed_transforms_string(StringView string)
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{
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unsigned allowed_transforms = 0;
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for (StringView part : string.split_view(',')) {
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if (part == "predictor" || part == "p")
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allowed_transforms |= 1 << Gfx::PREDICTOR_TRANSFORM;
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else if (part == "color" || part == "c")
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allowed_transforms |= 1 << Gfx::COLOR_TRANSFORM;
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else if (part == "subtract-green" || part == "sg")
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allowed_transforms |= 1 << Gfx::SUBTRACT_GREEN_TRANSFORM;
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else if (part == "color-indexing" || part == "ci")
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allowed_transforms |= 1 << Gfx::COLOR_INDEXING_TRANSFORM;
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else
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return Error::from_string_view("unknown WebP transform; valid values: predictor, p, color, c, subtract-green, sg, color-indexing, ci"sv);
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}
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return allowed_transforms;
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}
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static ErrorOr<Options> parse_options(Main::Arguments arguments)
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{
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Options options;
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Core::ArgsParser args_parser;
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args_parser.add_positional_argument(options.in_path, "Path to input image file", "FILE");
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args_parser.add_option(options.out_path, "Path to output image file", "output", 'o', "FILE");
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args_parser.add_option(options.no_output, "Do not write output (only useful for benchmarking image decoding)", "no-output", {});
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args_parser.add_option(options.frame_index, "Which frame of a multi-frame input image (0-based)", "frame-index", {}, "INDEX");
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args_parser.add_option(options.invert_cmyk, "Invert CMYK channels", "invert-cmyk", {});
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StringView crop_rect_string;
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args_parser.add_option(crop_rect_string, "Crop to a rectangle", "crop", {}, "x,y,w,h");
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args_parser.add_option(options.move_alpha_to_rgb, "Copy alpha channel to rgb, clear alpha", "move-alpha-to-rgb", {});
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args_parser.add_option(options.strip_alpha, "Remove alpha channel", "strip-alpha", {});
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args_parser.add_option(options.assign_color_profile_path, "Load color profile from file and assign it to output image", "assign-color-profile", {}, "FILE");
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args_parser.add_option(options.convert_color_profile_path, "Load color profile from file and convert output image from current profile to loaded profile", "convert-to-color-profile", {}, "FILE");
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args_parser.add_option(options.strip_color_profile, "Do not write color profile to output", "strip-color-profile", {});
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args_parser.add_option(options.quality, "Quality used for the JPEG encoder, the default value is 75 on a scale from 0 to 100", "quality", {}, {});
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StringView webp_allowed_transforms = "default"sv;
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args_parser.add_option(webp_allowed_transforms, "Comma-separated list of allowed transforms (predictor,p,color,c,subtract-green,sg,color-indexing,ci) for WebP output (default: all allowed)", "webp-allowed-transforms", {}, {});
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args_parser.parse(arguments);
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if (options.out_path.is_empty() ^ options.no_output)
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return Error::from_string_view("exactly one of -o or --no-output is required"sv);
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if (!crop_rect_string.is_empty())
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options.crop_rect = TRY(parse_rect_string(crop_rect_string));
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if (webp_allowed_transforms != "default"sv)
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options.webp_allowed_transforms = TRY(parse_webp_allowed_transforms_string(webp_allowed_transforms));
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return options;
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}
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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Options options = TRY(parse_options(arguments));
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auto file = TRY(Core::MappedFile::map(options.in_path));
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auto decoder = TRY(Gfx::ImageDecoder::try_create_for_raw_bytes(file->bytes()));
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if (!decoder)
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return Error::from_string_view("Could not find decoder for input file"sv);
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LoadedImage image = TRY(load_image(*decoder, options.frame_index));
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if (options.invert_cmyk)
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TRY(invert_cmyk(image));
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if (options.crop_rect.has_value())
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TRY(crop_image(image, options.crop_rect.value()));
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if (options.move_alpha_to_rgb)
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TRY(move_alpha_to_rgb(image));
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if (options.strip_alpha)
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TRY(strip_alpha(image));
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OwnPtr<Core::MappedFile> icc_file;
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if (!options.assign_color_profile_path.is_empty()) {
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icc_file = TRY(Core::MappedFile::map(options.assign_color_profile_path));
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image.icc_data = icc_file->bytes();
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}
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if (!options.convert_color_profile_path.is_empty())
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icc_file = TRY(convert_image_profile(image, options.convert_color_profile_path, move(icc_file)));
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if (options.strip_color_profile)
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image.icc_data.clear();
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if (options.no_output)
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return 0;
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TRY(save_image(image, options.out_path, options.quality, options.webp_allowed_transforms));
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return 0;
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}
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