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/*
* Copyright (c) 2020, the SerenityOS developers.
* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibGfx/Bitmap.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/Fetch/Fetching/Fetching.h>
#include <LibWeb/Fetch/Infrastructure/FetchAlgorithms.h>
#include <LibWeb/Fetch/Infrastructure/FetchController.h>
#include <LibWeb/Fetch/Infrastructure/HTTP/Requests.h>
#include <LibWeb/Fetch/Infrastructure/HTTP/Responses.h>
#include <LibWeb/HTML/HTMLVideoElement.h>
#include <LibWeb/HTML/VideoTrack.h>
#include <LibWeb/Layout/VideoBox.h>
#include <LibWeb/Platform/ImageCodecPlugin.h>
namespace Web::HTML {
HTMLVideoElement::HTMLVideoElement(DOM::Document& document, DOM::QualifiedName qualified_name)
: HTMLMediaElement(document, move(qualified_name))
{
}
HTMLVideoElement::~HTMLVideoElement() = default;
JS::ThrowCompletionOr<void> HTMLVideoElement::initialize(JS::Realm& realm)
{
MUST_OR_THROW_OOM(Base::initialize(realm));
set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLVideoElementPrototype>(realm, "HTMLVideoElement"));
return {};
}
void HTMLVideoElement::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_video_track);
visitor.visit(m_fetch_controller);
}
void HTMLVideoElement::parse_attribute(DeprecatedFlyString const& name, DeprecatedString const& value)
{
Base::parse_attribute(name, value);
if (name == HTML::AttributeNames::poster)
determine_element_poster_frame(value).release_value_but_fixme_should_propagate_errors();
}
void HTMLVideoElement::did_remove_attribute(DeprecatedFlyString const& name)
{
Base::did_remove_attribute(name);
if (name == HTML::AttributeNames::poster)
determine_element_poster_frame({}).release_value_but_fixme_should_propagate_errors();
}
JS::GCPtr<Layout::Node> HTMLVideoElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
{
return heap().allocate_without_realm<Layout::VideoBox>(document(), *this, move(style));
}
Layout::VideoBox* HTMLVideoElement::layout_node()
{
return static_cast<Layout::VideoBox*>(Node::layout_node());
}
Layout::VideoBox const* HTMLVideoElement::layout_node() const
{
return static_cast<Layout::VideoBox const*>(Node::layout_node());
}
// https://html.spec.whatwg.org/multipage/media.html#dom-video-videowidth
u32 HTMLVideoElement::video_width() const
{
// The videoWidth IDL attribute must return the intrinsic width of the video in CSS pixels. The videoHeight IDL
// attribute must return the intrinsic height of the video in CSS pixels. If the element's readyState attribute
// is HAVE_NOTHING, then the attributes must return 0.
if (ready_state() == ReadyState::HaveNothing)
return 0;
return m_video_width;
}
// https://html.spec.whatwg.org/multipage/media.html#dom-video-videoheight
u32 HTMLVideoElement::video_height() const
{
// The videoWidth IDL attribute must return the intrinsic width of the video in CSS pixels. The videoHeight IDL
// attribute must return the intrinsic height of the video in CSS pixels. If the element's readyState attribute
// is HAVE_NOTHING, then the attributes must return 0.
if (ready_state() == ReadyState::HaveNothing)
return 0;
return m_video_height;
}
void HTMLVideoElement::set_video_track(JS::GCPtr<HTML::VideoTrack> video_track)
{
set_needs_style_update(true);
document().set_needs_layout();
if (m_video_track)
m_video_track->pause_video({});
m_video_track = video_track;
}
void HTMLVideoElement::set_current_frame(Badge<VideoTrack>, RefPtr<Gfx::Bitmap> frame, double position)
{
m_current_frame = { move(frame), position };
if (layout_node())
layout_node()->set_needs_display();
}
void HTMLVideoElement::on_playing()
{
if (m_video_track)
m_video_track->play_video({});
}
void HTMLVideoElement::on_paused()
{
if (m_video_track)
m_video_track->pause_video({});
}
void HTMLVideoElement::on_seek(double position, MediaSeekMode seek_mode)
{
if (m_video_track)
m_video_track->seek(Time::from_milliseconds(position * 1000.0), seek_mode);
}
// https://html.spec.whatwg.org/multipage/media.html#attr-video-poster
WebIDL::ExceptionOr<void> HTMLVideoElement::determine_element_poster_frame(Optional<StringView> const& poster)
{
auto& realm = this->realm();
auto& vm = realm.vm();
m_poster_frame = nullptr;
// 1. If there is an existing instance of this algorithm running for this video element, abort that instance of
// this algorithm without changing the poster frame.
if (m_fetch_controller)
m_fetch_controller->stop_fetch();
// 2. If the poster attribute's value is the empty string or if the attribute is absent, then there is no poster
// frame; return.
if (!poster.has_value() || poster->is_empty())
return {};
// 3. Parse the poster attribute's value relative to the element's node document. If this fails, then there is no
// poster frame; return.
auto url_record = document().parse_url(*poster);
if (!url_record.is_valid())
return {};
// 4. Let request be a new request whose URL is the resulting URL record, client is the element's node document's
// relevant settings object, destination is "image", initiator type is "video", credentials mode is "include",
// and whose use-URL-credentials flag is set.
auto request = Fetch::Infrastructure::Request::create(vm);
request->set_url(move(url_record));
request->set_client(&document().relevant_settings_object());
request->set_destination(Fetch::Infrastructure::Request::Destination::Image);
request->set_initiator_type(Fetch::Infrastructure::Request::InitiatorType::Video);
request->set_credentials_mode(Fetch::Infrastructure::Request::CredentialsMode::Include);
request->set_use_url_credentials(true);
// 5. Fetch request. This must delay the load event of the element's node document.
Fetch::Infrastructure::FetchAlgorithms::Input fetch_algorithms_input {};
m_load_event_delayer.emplace(document());
fetch_algorithms_input.process_response = [this](auto response) mutable {
ScopeGuard guard { [&] { m_load_event_delayer.clear(); } };
auto& realm = this->realm();
auto& global = document().realm().global_object();
if (response->is_network_error())
return;
if (response->type() == Fetch::Infrastructure::Response::Type::Opaque || response->type() == Fetch::Infrastructure::Response::Type::OpaqueRedirect) {
auto& filtered_response = static_cast<Fetch::Infrastructure::FilteredResponse&>(*response);
response = filtered_response.internal_response();
}
auto on_image_data_read = [this](auto image_data) mutable {
m_fetch_controller = nullptr;
// 6. If an image is thus obtained, the poster frame is that image. Otherwise, there is no poster frame.
auto image = Platform::ImageCodecPlugin::the().decode_image(image_data);
if (!image.has_value() || image->frames.is_empty())
return;
m_poster_frame = move(image.release_value().frames[0].bitmap);
};
VERIFY(response->body().has_value());
auto empty_algorithm = [](auto) {};
response->body()->fully_read(realm, move(on_image_data_read), move(empty_algorithm), JS::NonnullGCPtr { global }).release_value_but_fixme_should_propagate_errors();
};
m_fetch_controller = TRY(Fetch::Fetching::fetch(realm, request, Fetch::Infrastructure::FetchAlgorithms::create(vm, move(fetch_algorithms_input))));
return {};
}
}
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