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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/webcodecs/image_track_list.h"
#include "base/logging.h"
#include "third_party/blink/renderer/modules/webcodecs/image_decoder_external.h"
#include "third_party/blink/renderer/modules/webcodecs/image_track.h"
namespace blink {
ImageTrackList::ImageTrackList(ImageDecoderExternal* image_decoder)
: image_decoder_(image_decoder),
ready_property_(MakeGarbageCollected<ReadyProperty>(
image_decoder->GetExecutionContext())) {}
ImageTrackList::~ImageTrackList() = default;
ImageTrack* ImageTrackList::AnonymousIndexedGetter(uint32_t index) const {
return index >= tracks_.size() ? nullptr : tracks_[index].Get();
}
int32_t ImageTrackList::selectedIndex() const {
return selected_track_id_.value_or(-1);
}
ImageTrack* ImageTrackList::selectedTrack() const {
if (!selected_track_id_)
return nullptr;
return tracks_[*selected_track_id_].Get();
}
ScriptPromise<IDLUndefined> ImageTrackList::ready(ScriptState* script_state) {
return ready_property_->Promise(script_state->World());
}
void ImageTrackList::OnTracksReady(DOMException* exception) {
if (!exception) {
DCHECK(!IsEmpty());
ready_property_->ResolveWithUndefined();
} else {
DCHECK(IsEmpty());
ready_property_->Reject(exception);
}
}
void ImageTrackList::AddTrack(uint32_t frame_count,
int repetition_count,
bool selected) {
if (selected) {
DCHECK(!selected_track_id_.has_value());
selected_track_id_ = tracks_.size();
}
tracks_.push_back(MakeGarbageCollected<ImageTrack>(
this, tracks_.size(), frame_count, repetition_count, selected));
}
void ImageTrackList::OnTrackSelectionChanged(wtf_size_t index) {
DCHECK(image_decoder_);
DCHECK_LT(index, tracks_.size());
if (selected_track_id_)
tracks_[*selected_track_id_]->set_selected(false);
if (tracks_[index]->selected())
selected_track_id_ = index;
else
selected_track_id_.reset();
image_decoder_->UpdateSelectedTrack();
}
void ImageTrackList::Disconnect() {
for (auto& track : tracks_)
track->disconnect();
image_decoder_ = nullptr;
selected_track_id_.reset();
tracks_.clear();
}
void ImageTrackList::Trace(Visitor* visitor) const {
ScriptWrappable::Trace(visitor);
visitor->Trace(image_decoder_);
visitor->Trace(tracks_);
visitor->Trace(ready_property_);
}
} // namespace blink
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