blob: 0ea65b5e5a20c7092e7911ec037eb49760a9cd70 [file] [log] [blame]
// 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.
#include "base/macros.h"
#include "media/base/media_export.h"
#include "starboard/types.h"
namespace cobalt {
namespace media {
namespace mp2t {
class MEDIA_EXPORT TimestampUnroller {
// Given that |timestamp| is coded using 33 bits (accuracy of MPEG-2 TS
// timestamps), GetUnrolledTimestamp returns the corresponding unrolled
// timestamp.
// The unrolled timestamp is defined by:
// |timestamp| + k * (2 ^ 33)
// where k is estimated so that the unrolled timestamp is as close as
// possible to the previous unrolled timestamp returned by this function
// (if this function has not been called before, it will return the timestamp
// unmodified).
int64_t GetUnrolledTimestamp(int64_t timestamp);
// Reset the TimestampUnroller to its initial state.
void Reset();
// Indicate whether the value of |previous_unrolled_timestamp_| is valid.
bool is_previous_timestamp_valid_;
// This is the last output of GetUnrolledTimestamp.
int64_t previous_unrolled_timestamp_;
} // namespace mp2t
} // namespace media
} // namespace cobalt