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// Copyright 2023 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_PLATFORM_PEERCONNECTION_RESOLUTION_MONITOR_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_RESOLUTION_MONITOR_H_
#include <memory>
#include <optional>
#include "base/sequence_checker.h"
#include "media/base/video_codecs.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "ui/gfx/geometry/size.h"
namespace media {
class DecoderBuffer;
} // namespace media
namespace blink {
// Resolution monitor acquires a resolution of DecoderBuffer by parsing it. We
// can know the stream resolution before the first keyframe is decoded. This
// avoids requesting a sender to produce a keyframe again when a software
// decoder fallback happens due to stream resolution change.
class PLATFORM_EXPORT ResolutionMonitor {
public:
virtual ~ResolutionMonitor();
static std::unique_ptr<ResolutionMonitor> Create(media::VideoCodec codec);
virtual std::optional<gfx::Size> GetResolution(
const media::DecoderBuffer& buffer) = 0;
virtual media::VideoCodec codec() const = 0;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_RESOLUTION_MONITOR_H_
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