ladybird/Libraries/LibWebView/Plugins/ImageCodecPlugin.cpp
Andreas Kling 37e7526367 LibGfx: Split image decoders into a separate library
Move the image loader sources and decoder-only dependencies from LibGfx
into a new LibImageDecoders library. This keeps the APNG-enabled PNG
loader out of processes that only need core graphics and image writers.

Link the ImageDecoder service, direct decoder tests, fuzzers, test-web,
and the image utility against LibImageDecoders where they still decode
images in-process.
2026-06-10 11:55:48 +02:00

93 lines
3.1 KiB
C++

/*
* Copyright (c) 2022, Dex♪ <dexes.ttp@gmail.com>
* Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibGfx/Bitmap.h>
#include <LibImageDecoderClient/Client.h>
#include <LibWebView/Plugins/ImageCodecPlugin.h>
#include <LibWebView/Utilities.h>
namespace WebView {
ImageCodecPlugin::ImageCodecPlugin(NonnullRefPtr<ImageDecoderClient::Client> client)
: m_client(move(client))
{
setup_client_callbacks();
}
void ImageCodecPlugin::set_client(NonnullRefPtr<ImageDecoderClient::Client> client)
{
m_client = move(client);
setup_client_callbacks();
}
void ImageCodecPlugin::setup_client_callbacks()
{
m_client->on_death = [this] {
m_client = nullptr;
};
m_client->on_animation_frames_decoded = [this](i64 session_id, Vector<NonnullRefPtr<Gfx::Bitmap>> bitmaps) {
if (on_animation_frames_decoded)
on_animation_frames_decoded(session_id, move(bitmaps));
};
m_client->on_animation_decode_failed = [this](i64 session_id, String) {
if (on_animation_decode_failed)
on_animation_decode_failed(session_id);
};
}
ImageCodecPlugin::~ImageCodecPlugin() = default;
NonnullRefPtr<Core::Promise<Web::Platform::DecodedImage>> ImageCodecPlugin::decode_image(ReadonlyBytes bytes, Function<ErrorOr<void>(Web::Platform::DecodedImage&)> on_resolved, Function<void(Error&)> on_rejected)
{
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);
if (!m_client) {
promise->reject(Error::from_string_literal("ImageDecoderClient is disconnected"));
return promise;
}
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;
decoded_image.frame_count = result.frame_count;
decoded_image.session_id = result.session_id;
decoded_image.all_durations = move(result.all_durations);
for (auto& frame : result.frames) {
decoded_image.frames.empend(move(frame.bitmap), frame.duration);
}
decoded_image.color_space = move(result.color_space);
promise->resolve(move(decoded_image));
return {};
},
[promise](auto& error) {
promise->reject(Error::copy(error));
});
return promise;
}
void ImageCodecPlugin::request_animation_frames(i64 session_id, u32 start_frame_index, u32 count)
{
if (m_client)
m_client->request_animation_frames(session_id, start_frame_index, count);
}
void ImageCodecPlugin::stop_animation_decode(i64 session_id)
{
if (m_client)
m_client->stop_animation_decode(session_id);
}
}