e8a63eeb0e
JPEG-XL is a new image format standardized by the same committee as the original JPEG image format. It has all the nice feature of recent formats, and great compression ratios. For more details, look at: https://jpegxl.info/ This decoder is far from being feature-complete, as it features a grand total of 60 FIXMEs and TODOs but anyway, it's still a good start. I developed this decoder in the Serenity way, I just try to decode a specific image while staying as close as possible to the specification. Considering that the format supports a lot of options, and that we basically support only one possibility for each of them, I'm pretty sure that we can only decode the image I've developed this decoder for. Which is: 0aff 3ffa 9101 0688 0001 004c 384b bc41 5ced 86e5 2a19 0696 03e5 4920 8038 000b
103 lines
4.1 KiB
C++
103 lines
4.1 KiB
C++
/*
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* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/LexicalPath.h>
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#include <LibGfx/ImageFormats/BMPLoader.h>
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#include <LibGfx/ImageFormats/DDSLoader.h>
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#include <LibGfx/ImageFormats/GIFLoader.h>
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#include <LibGfx/ImageFormats/ICOLoader.h>
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#include <LibGfx/ImageFormats/ImageDecoder.h>
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#include <LibGfx/ImageFormats/JPEGLoader.h>
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#include <LibGfx/ImageFormats/JPEGXLLoader.h>
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#include <LibGfx/ImageFormats/PBMLoader.h>
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#include <LibGfx/ImageFormats/PGMLoader.h>
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#include <LibGfx/ImageFormats/PNGLoader.h>
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#include <LibGfx/ImageFormats/PPMLoader.h>
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#include <LibGfx/ImageFormats/QOILoader.h>
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#include <LibGfx/ImageFormats/TGALoader.h>
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#include <LibGfx/ImageFormats/TinyVGLoader.h>
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#include <LibGfx/ImageFormats/WebPLoader.h>
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namespace Gfx {
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static OwnPtr<ImageDecoderPlugin> probe_and_sniff_for_appropriate_plugin(ReadonlyBytes bytes)
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{
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struct ImagePluginInitializer {
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bool (*sniff)(ReadonlyBytes) = nullptr;
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ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> (*create)(ReadonlyBytes) = nullptr;
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};
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static constexpr ImagePluginInitializer s_initializers[] = {
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{ PNGImageDecoderPlugin::sniff, PNGImageDecoderPlugin::create },
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{ GIFImageDecoderPlugin::sniff, GIFImageDecoderPlugin::create },
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{ BMPImageDecoderPlugin::sniff, BMPImageDecoderPlugin::create },
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{ PBMImageDecoderPlugin::sniff, PBMImageDecoderPlugin::create },
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{ PGMImageDecoderPlugin::sniff, PGMImageDecoderPlugin::create },
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{ PPMImageDecoderPlugin::sniff, PPMImageDecoderPlugin::create },
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{ ICOImageDecoderPlugin::sniff, ICOImageDecoderPlugin::create },
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{ JPEGImageDecoderPlugin::sniff, JPEGImageDecoderPlugin::create },
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{ JPEGXLImageDecoderPlugin::sniff, JPEGXLImageDecoderPlugin::create },
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{ DDSImageDecoderPlugin::sniff, DDSImageDecoderPlugin::create },
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{ QOIImageDecoderPlugin::sniff, QOIImageDecoderPlugin::create },
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{ TinyVGImageDecoderPlugin::sniff, TinyVGImageDecoderPlugin::create },
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{ WebPImageDecoderPlugin::sniff, WebPImageDecoderPlugin::create },
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};
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for (auto& plugin : s_initializers) {
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auto sniff_result = plugin.sniff(bytes);
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if (!sniff_result)
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continue;
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auto plugin_decoder = plugin.create(bytes);
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if (!plugin_decoder.is_error())
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return plugin_decoder.release_value();
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}
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return {};
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}
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static OwnPtr<ImageDecoderPlugin> probe_and_sniff_for_appropriate_plugin_with_known_mime_type(StringView mime_type, ReadonlyBytes bytes)
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{
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struct ImagePluginWithMIMETypeInitializer {
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ErrorOr<bool> (*validate_before_create)(ReadonlyBytes) = nullptr;
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ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> (*create)(ReadonlyBytes) = nullptr;
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StringView mime_type;
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};
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static constexpr ImagePluginWithMIMETypeInitializer s_initializers_with_mime_type[] = {
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{ TGAImageDecoderPlugin::validate_before_create, TGAImageDecoderPlugin::create, "image/x-targa"sv },
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};
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for (auto& plugin : s_initializers_with_mime_type) {
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if (plugin.mime_type != mime_type)
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continue;
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auto validation_result = plugin.validate_before_create(bytes).release_value_but_fixme_should_propagate_errors();
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if (!validation_result)
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continue;
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auto plugin_decoder = plugin.create(bytes);
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if (!plugin_decoder.is_error())
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return plugin_decoder.release_value();
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}
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return {};
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}
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RefPtr<ImageDecoder> ImageDecoder::try_create_for_raw_bytes(ReadonlyBytes bytes, Optional<DeprecatedString> mime_type)
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{
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if (OwnPtr<ImageDecoderPlugin> plugin = probe_and_sniff_for_appropriate_plugin(bytes); plugin)
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return adopt_ref_if_nonnull(new (nothrow) ImageDecoder(plugin.release_nonnull()));
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if (mime_type.has_value()) {
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if (OwnPtr<ImageDecoderPlugin> plugin = probe_and_sniff_for_appropriate_plugin_with_known_mime_type(mime_type.value(), bytes); plugin)
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return adopt_ref_if_nonnull(new (nothrow) ImageDecoder(plugin.release_nonnull()));
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}
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return {};
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}
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ImageDecoder::ImageDecoder(NonnullOwnPtr<ImageDecoderPlugin> plugin)
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: m_plugin(move(plugin))
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{
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}
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}
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