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// Copyright 2014 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_BUFFERED_DATA_SOURCE_HOST_IMPL_H_
#define MEDIA_BLINK_BUFFERED_DATA_SOURCE_HOST_IMPL_H_
#include "base/time/time.h"
#include "media/blink/buffered_data_source.h"
#include "media/blink/media_blink_export.h"
namespace media {
// Provides an implementation of BufferedDataSourceHost that translates the
// buffered byte ranges into estimated time ranges.
class MEDIA_BLINK_EXPORT BufferedDataSourceHostImpl
: public BufferedDataSourceHost {
public:
BufferedDataSourceHostImpl();
~BufferedDataSourceHostImpl() override;
// BufferedDataSourceHost implementation.
void SetTotalBytes(int64_t total_bytes) override;
void AddBufferedByteRange(int64_t start, int64_t end) override;
// Translate the byte ranges to time ranges and append them to the list.
// TODO(sandersd): This is a confusing name, find something better.
void AddBufferedTimeRanges(
Ranges<base::TimeDelta>* buffered_time_ranges,
base::TimeDelta media_duration) const;
bool DidLoadingProgress();
private:
// Total size of the data source.
int64_t total_bytes_;
// List of buffered byte ranges for estimating buffered time.
// The InterValMap value is 1 for bytes that are buffered, 0 otherwise.
IntervalMap<int64_t, int> buffered_byte_ranges_;
// True when AddBufferedByteRange() has been called more recently than
// DidLoadingProgress().
bool did_loading_progress_;
DISALLOW_COPY_AND_ASSIGN(BufferedDataSourceHostImpl);
};
} // namespace media
#endif // MEDIA_BLINK_BUFFERED_DATA_SOURCE_HOST_IMPL_H_
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