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https://github.com/RGBCube/serenity
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3b9f110161
The overhead from spawning a new ImageDecoder for every decoding job is way too large and causing other problems as well (#5421) Let's keep the same decoder open and reuse it as long as it's working.
136 lines
4.1 KiB
C++
136 lines
4.1 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/Function.h>
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#include <LibGfx/Bitmap.h>
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#include <LibImageDecoderClient/Client.h>
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#include <LibWeb/Loader/ImageResource.h>
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namespace Web {
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ImageResource::ImageResource(const LoadRequest& request)
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: Resource(Type::Image, request)
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{
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}
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ImageResource::~ImageResource()
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{
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}
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int ImageResource::frame_duration(size_t frame_index) const
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{
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decode_if_needed();
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if (frame_index >= m_decoded_frames.size())
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return 0;
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return m_decoded_frames[frame_index].duration;
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}
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static ImageDecoderClient::Client& image_decoder_client()
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{
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static RefPtr<ImageDecoderClient::Client> image_decoder_client;
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if (!image_decoder_client) {
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image_decoder_client = ImageDecoderClient::Client::construct();
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image_decoder_client->on_death = [&] {
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image_decoder_client = nullptr;
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};
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}
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return *image_decoder_client;
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}
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void ImageResource::decode_if_needed() const
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{
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if (!has_encoded_data())
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return;
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if (m_has_attempted_decode)
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return;
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if (!m_decoded_frames.is_empty())
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return;
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NonnullRefPtr decoder = image_decoder_client();
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auto image = decoder->decode_image(encoded_data());
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if (image.has_value()) {
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m_loop_count = image.value().loop_count;
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m_animated = image.value().is_animated;
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m_decoded_frames.resize(image.value().frames.size());
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for (size_t i = 0; i < m_decoded_frames.size(); ++i) {
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auto& frame = m_decoded_frames[i];
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frame.bitmap = image.value().frames[i].bitmap;
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frame.duration = image.value().frames[i].duration;
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}
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}
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m_has_attempted_decode = true;
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}
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const Gfx::Bitmap* ImageResource::bitmap(size_t frame_index) const
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{
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decode_if_needed();
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if (frame_index >= m_decoded_frames.size())
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return nullptr;
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return m_decoded_frames[frame_index].bitmap;
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}
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void ImageResource::update_volatility()
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{
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bool visible_in_viewport = false;
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for_each_client([&](auto& client) {
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if (static_cast<const ImageResourceClient&>(client).is_visible_in_viewport())
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visible_in_viewport = true;
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});
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if (!visible_in_viewport) {
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for (auto& frame : m_decoded_frames) {
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if (frame.bitmap)
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frame.bitmap->set_volatile();
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}
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return;
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}
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bool still_has_decoded_image = true;
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for (auto& frame : m_decoded_frames) {
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if (!frame.bitmap) {
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still_has_decoded_image = false;
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} else {
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bool still_has_frame = frame.bitmap->set_nonvolatile();
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if (!still_has_frame)
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still_has_decoded_image = false;
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}
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}
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if (still_has_decoded_image)
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return;
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m_decoded_frames.clear();
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m_has_attempted_decode = false;
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}
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ImageResourceClient::~ImageResourceClient()
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{
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}
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}
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