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// Copyright 2016 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/mediasource/source_buffer_track_base_supplement.h"
#include "third_party/blink/renderer/core/html/track/track_base.h"
#include "third_party/blink/renderer/modules/mediasource/source_buffer.h"
namespace blink {
// static
const char SourceBufferTrackBaseSupplement::kSupplementName[] =
"SourceBufferTrackBaseSupplement";
// static
SourceBufferTrackBaseSupplement* SourceBufferTrackBaseSupplement::FromIfExists(
TrackBase& track) {
return Supplement<TrackBase>::From<SourceBufferTrackBaseSupplement>(track);
}
// static
SourceBufferTrackBaseSupplement& SourceBufferTrackBaseSupplement::From(
TrackBase& track) {
SourceBufferTrackBaseSupplement* supplement = FromIfExists(track);
if (!supplement) {
supplement = MakeGarbageCollected<SourceBufferTrackBaseSupplement>(track);
Supplement<TrackBase>::ProvideTo(track, supplement);
}
return *supplement;
}
// static
SourceBuffer* SourceBufferTrackBaseSupplement::sourceBuffer(TrackBase& track) {
SourceBufferTrackBaseSupplement* supplement = FromIfExists(track);
if (supplement)
return supplement->source_buffer_.Get();
return nullptr;
}
SourceBufferTrackBaseSupplement::SourceBufferTrackBaseSupplement(
TrackBase& track)
: Supplement(track) {}
void SourceBufferTrackBaseSupplement::SetSourceBuffer(
TrackBase& track,
SourceBuffer* source_buffer) {
From(track).source_buffer_ = source_buffer;
}
void SourceBufferTrackBaseSupplement::Trace(Visitor* visitor) const {
visitor->Trace(source_buffer_);
Supplement<TrackBase>::Trace(visitor);
}
} // namespace blink
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