chromium/third_party/blink/renderer/core/html/track/cue_timeline.h

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_TRACK_CUE_TIMELINE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_TRACK_CUE_TIMELINE_H_

#include <optional>

#include "base/types/pass_key.h"
#include "third_party/blink/renderer/core/html/track/text_track_cue.h"
#include "third_party/blink/renderer/core/html/track/vtt/vtt_cue.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/pod_interval_tree.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"

namespace blink {

class HTMLMediaElement;
class TextTrackCueList;

// TODO(Oilpan): This needs to be PODIntervalTree<double, Member<TextTrackCue>>.
// However, it is not easy to move PODIntervalTree to the heap (for a
// C++-template reason) so we leave it as a raw pointer at the moment. This is
// safe because CueTimeline and TextTrackCue are guaranteed to die at the same
// time when the owner HTMLMediaElement dies. Thus the raw TextTrackCue* cannot
// become stale pointers.
CueIntervalTree;
CueInterval;
CueList;

// This class manages the timeline and rendering updates of cues associated
// with TextTracks. Owned by a HTMLMediaElement.
class CueTimeline final : public GarbageCollected<CueTimeline> { … };

}  // namespace blink

namespace WTF {
#ifndef NDEBUG
// Template specializations required by PodIntervalTree in debug mode.
template <>
struct ValueToString<blink::TextTrackCue*> { … };
#endif
}

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_HTML_TRACK_CUE_TIMELINE_H_