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