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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_CAST_CAST_DEFINES_H_
#define MEDIA_CAST_CAST_DEFINES_H_
#include "base/time/time.h"
namespace media {
namespace cast {
// TODO(miu): All remaining functions in this file are to be replaced with
// methods in well-defined data types. http://crbug.com/530839
inline bool IsNewerFrameId(uint32 frame_id, uint32 prev_frame_id) {
return (frame_id != prev_frame_id) &&
static_cast<uint32>(frame_id - prev_frame_id) < 0x80000000;
}
inline bool IsNewerRtpTimestamp(uint32 timestamp, uint32 prev_timestamp) {
return (timestamp != prev_timestamp) &&
static_cast<uint32>(timestamp - prev_timestamp) < 0x80000000;
}
inline bool IsOlderFrameId(uint32 frame_id, uint32 prev_frame_id) {
return (frame_id == prev_frame_id) || IsNewerFrameId(prev_frame_id, frame_id);
}
inline bool IsNewerPacketId(uint16 packet_id, uint16 prev_packet_id) {
return (packet_id != prev_packet_id) &&
static_cast<uint16>(packet_id - prev_packet_id) < 0x8000;
}
inline bool IsNewerSequenceNumber(uint16 sequence_number,
uint16 prev_sequence_number) {
// Same function as IsNewerPacketId just different data and name.
return IsNewerPacketId(sequence_number, prev_sequence_number);
}
inline base::TimeDelta RtpDeltaToTimeDelta(int64 rtp_delta, int rtp_timebase) {
DCHECK_GT(rtp_timebase, 0);
return rtp_delta * base::TimeDelta::FromSeconds(1) / rtp_timebase;
}
inline int64 TimeDeltaToRtpDelta(base::TimeDelta delta, int rtp_timebase) {
DCHECK_GT(rtp_timebase, 0);
return delta * rtp_timebase / base::TimeDelta::FromSeconds(1);
}
} // namespace cast
} // namespace media
#endif // MEDIA_CAST_CAST_DEFINES_H_
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