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LibWeb+WebContent: Convert ImageCodecPlugin to use the promise-based API

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This commit is contained in:
Andrew Kaster 2024-04-19 15:02:12 -06:00 committed by Andrew Kaster
parent b871bc082c
commit 39dfb659cf
Notes: sideshowbarker 2024-07-17 08:59:18 +09:00 
Author: https://github.com/ADKaster
Commit: https://github.com/SerenityOS/serenity/commit/39dfb659cf
Pull-request: https://github.com/SerenityOS/serenity/pull/24028
Reviewed-by: https://github.com/LucasChollet
Reviewed-by: https://github.com/awesomekling
6 changed files with 60 additions and 27 deletions
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35
Ladybird/ImageCodecPlugin.cpp
View File

@ -20,7 +20,7 @@ namespace Ladybird {
ImageCodecPlugin::~ImageCodecPlugin() = default;
Optional<Web::Platform::DecodedImage> ImageCodecPlugin::decode_image(ReadonlyBytes bytes)
NonnullRefPtr<Core::Promise<Web::Platform::DecodedImage>> ImageCodecPlugin::decode_image(ReadonlyBytes bytes, Function<ErrorOr<void>(Web::Platform::DecodedImage&)> on_resolved, Function<void(Error&)> on_rejected)
{
if (!m_client) {
#ifdef AK_OS_ANDROID
@ -34,19 +34,30 @@ Optional<Web::Platform::DecodedImage> ImageCodecPlugin::decode_image(ReadonlyByt
};
}
auto result_or_empty = m_client->decode_image(bytes);
if (!result_or_empty.has_value())
return {};
auto result = result_or_empty.release_value();
auto promise = Core::Promise<Web::Platform::DecodedImage>::construct();
if (on_resolved)
promise->on_resolution = move(on_resolved);
if (on_rejected)
promise->on_rejection = move(on_rejected);
Web::Platform::DecodedImage decoded_image;
decoded_image.is_animated = result.is_animated;
decoded_image.loop_count = result.loop_count;
for (auto const& frame : result.frames) {
decoded_image.frames.empend(move(frame.bitmap), frame.duration);
}
auto image_decoder_promise = m_client->decode_image(
bytes,
[promise](ImageDecoderClient::DecodedImage& result) -> ErrorOr<void> {
// FIXME: Remove this codec plugin and just use the ImageDecoderClient directly to avoid these copies
Web::Platform::DecodedImage decoded_image;
decoded_image.is_animated = result.is_animated;
decoded_image.loop_count = result.loop_count;
for (auto const& frame : result.frames) {
decoded_image.frames.empend(move(frame.bitmap), frame.duration);
}
promise->resolve(move(decoded_image));
return {};
},
[promise](auto& error) {
promise->reject(Error::copy(error));
});
return decoded_image;
return promise;
}
}

2
Ladybird/ImageCodecPlugin.h
View File

@ -17,7 +17,7 @@ public:
ImageCodecPlugin() = default;
virtual ~ImageCodecPlugin() override;
virtual Optional<Web::Platform::DecodedImage> decode_image(ReadonlyBytes data) override;
virtual NonnullRefPtr<Core::Promise<Web::Platform::DecodedImage>> decode_image(ReadonlyBytes, Function<ErrorOr<void>(Web::Platform::DecodedImage&)> on_resolved, Function<void(Error&)> on_rejected) override;
private:
RefPtr<ImageDecoderClient::Client> m_client;

9
Userland/Libraries/LibWeb/Platform/ImageCodecPlugin.cpp
View File

@ -25,4 +25,13 @@ void ImageCodecPlugin::install(ImageCodecPlugin& plugin)
s_the = &plugin;
}
Optional<DecodedImage> ImageCodecPlugin::decode_image(ReadonlyBytes encoded_data)
{
auto promise = decode_image(encoded_data, {}, {});
auto result = promise->await();
if (result.is_error())
return {};
return result.release_value();
}
}

4
Userland/Libraries/LibWeb/Platform/ImageCodecPlugin.h
View File

@ -9,6 +9,7 @@
#include <AK/RefPtr.h>
#include <AK/Vector.h>
#include <LibCore/Promise.h>
#include <LibGfx/Forward.h>
namespace Web::Platform {
@ -31,7 +32,8 @@ public:
virtual ~ImageCodecPlugin();
virtual Optional<DecodedImage> decode_image(ReadonlyBytes) = 0;
virtual NonnullRefPtr<Core::Promise<DecodedImage>> decode_image(ReadonlyBytes, Function<ErrorOr<void>(DecodedImage&)> on_resolved, Function<void(Error&)> on_rejected) = 0;
Optional<DecodedImage> decode_image(ReadonlyBytes);
};
}

35
Userland/Services/WebContent/ImageCodecPluginSerenity.cpp
View File

@ -13,7 +13,7 @@ namespace WebContent {
ImageCodecPluginSerenity::ImageCodecPluginSerenity() = default;
ImageCodecPluginSerenity::~ImageCodecPluginSerenity() = default;
Optional<Web::Platform::DecodedImage> ImageCodecPluginSerenity::decode_image(ReadonlyBytes bytes)
NonnullRefPtr<Core::Promise<Web::Platform::DecodedImage>> ImageCodecPluginSerenity::decode_image(ReadonlyBytes bytes, Function<ErrorOr<void>(Web::Platform::DecodedImage&)> on_resolved, Function<void(Error&)> on_rejected)
{
if (!m_client) {
m_client = ImageDecoderClient::Client::try_create().release_value_but_fixme_should_propagate_errors();
@ -22,19 +22,30 @@ Optional<Web::Platform::DecodedImage> ImageCodecPluginSerenity::decode_image(Rea
};
}
auto result_or_empty = m_client->decode_image(bytes);
if (!result_or_empty.has_value())
return {};
auto result = result_or_empty.release_value();
auto promise = Core::Promise<Web::Platform::DecodedImage>::construct();
if (on_resolved)
promise->on_resolution = move(on_resolved);
if (on_rejected)
promise->on_rejection = move(on_rejected);
Web::Platform::DecodedImage decoded_image;
decoded_image.is_animated = result.is_animated;
decoded_image.loop_count = result.loop_count;
for (auto const& frame : result.frames) {
decoded_image.frames.empend(frame.bitmap, frame.duration);
}
auto image_decoder_promise = m_client->decode_image(
bytes,
[promise](ImageDecoderClient::DecodedImage& result) -> ErrorOr<void> {
// FIXME: Remove this codec plugin and just use the ImageDecoderClient directly to avoid these copies
Web::Platform::DecodedImage decoded_image;
decoded_image.is_animated = result.is_animated;
decoded_image.loop_count = result.loop_count;
for (auto const& frame : result.frames) {
decoded_image.frames.empend(move(frame.bitmap), frame.duration);
}
promise->resolve(move(decoded_image));
return {};
},
[promise](auto& error) {
promise->reject(Error::copy(error));
});
return decoded_image;
return promise;
}
}

2
Userland/Services/WebContent/ImageCodecPluginSerenity.h
View File

@ -21,7 +21,7 @@ public:
ImageCodecPluginSerenity();
virtual ~ImageCodecPluginSerenity() override;
virtual Optional<Web::Platform::DecodedImage> decode_image(ReadonlyBytes) override;
virtual NonnullRefPtr<Core::Promise<Web::Platform::DecodedImage>> decode_image(ReadonlyBytes, Function<ErrorOr<void>(Web::Platform::DecodedImage&)> on_resolved, Function<void(Error&)> on_rejected) override;
private:
RefPtr<ImageDecoderClient::Client> m_client;