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// Copyright 2013 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 MEDIA_BLINK_WEBSOURCEBUFFER_IMPL_H_
#define MEDIA_BLINK_WEBSOURCEBUFFER_IMPL_H_
#include <stddef.h>
#include <memory>
#include <string>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/time/time.h"
#include "third_party/WebKit/public/platform/WebSourceBuffer.h"
namespace media {
class ChunkDemuxer;
class MediaTracks;
class WebSourceBufferImpl : public blink::WebSourceBuffer {
public:
WebSourceBufferImpl(const std::string& id, ChunkDemuxer* demuxer);
~WebSourceBufferImpl() override;
// blink::WebSourceBuffer implementation.
void SetClient(blink::WebSourceBufferClient* client) override;
bool SetMode(AppendMode mode) override;
blink::WebTimeRanges Buffered() override;
double HighestPresentationTimestamp() override;
bool EvictCodedFrames(double currentPlaybackTime,
size_t newDataSize) override;
bool Append(const unsigned char* data,
unsigned length,
double* timestamp_offset) override;
void ResetParserState() override;
void Remove(double start, double end) override;
bool SetTimestampOffset(double offset) override;
void SetAppendWindowStart(double start) override;
void SetAppendWindowEnd(double end) override;
void RemovedFromMediaSource() override;
private:
// Demuxer callback handler to process an initialization segment received
// during an append() call.
void InitSegmentReceived(std::unique_ptr<MediaTracks> tracks);
std::string id_;
ChunkDemuxer* demuxer_; // Owned by WebMediaPlayerImpl.
blink::WebSourceBufferClient* client_;
// Controls the offset applied to timestamps when processing appended media
// segments. It is initially 0, which indicates that no offset is being
// applied. Both setTimestampOffset() and append() may update this value.
base::TimeDelta timestamp_offset_;
base::TimeDelta append_window_start_;
base::TimeDelta append_window_end_;
DISALLOW_COPY_AND_ASSIGN(WebSourceBufferImpl);
};
} // namespace media
#endif // MEDIA_BLINK_WEBSOURCEBUFFER_IMPL_H_
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