| // Copyright 2020 The Chromium Authors. All rights reserved. |
| // 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_MEDIA_MEDIA_SOURCE_TRACER_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_MEDIA_MEDIA_SOURCE_TRACER_H_ |
| |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| |
| namespace blink { |
| |
| // Interface that encapsulates the Oilpan tracing of either same-thread or |
| // cross-thread attachment of an HTMLMediaElement and MediaSource, necessary |
| // since MediaSourceAttachments themselves are not managed by Oilpan. See |
| // concrete implementation(s) in modules/mediasource. |
| class CORE_EXPORT MediaSourceTracer |
| : public GarbageCollected<MediaSourceTracer> { |
| public: |
| virtual ~MediaSourceTracer() = default; |
| virtual void Trace(Visitor*) const; |
| |
| // Returns true iff the concrete tracer implementation supports cross-thread |
| // attachments, for debug check only. |
| virtual bool IsCrossThreadForDebugging() const = 0; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_HTML_MEDIA_MEDIA_SOURCE_TRACER_H_ |
