| // 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_t frame_id, uint32_t prev_frame_id) { |
| return (frame_id != prev_frame_id) && |
| static_cast<uint32_t>(frame_id - prev_frame_id) < 0x80000000; |
| } |
| |
| inline bool IsNewerRtpTimestamp(uint32_t timestamp, uint32_t prev_timestamp) { |
| return (timestamp != prev_timestamp) && |
| static_cast<uint32_t>(timestamp - prev_timestamp) < 0x80000000; |
| } |
| |
| inline bool IsOlderFrameId(uint32_t frame_id, uint32_t prev_frame_id) { |
| return (frame_id == prev_frame_id) || IsNewerFrameId(prev_frame_id, frame_id); |
| } |
| |
| inline bool IsNewerPacketId(uint16_t packet_id, uint16_t prev_packet_id) { |
| return (packet_id != prev_packet_id) && |
| static_cast<uint16_t>(packet_id - prev_packet_id) < 0x8000; |
| } |
| |
| inline bool IsNewerSequenceNumber(uint16_t sequence_number, |
| uint16_t prev_sequence_number) { |
| // Same function as IsNewerPacketId just different data and name. |
| return IsNewerPacketId(sequence_number, prev_sequence_number); |
| } |
| |
| inline base::TimeDelta RtpDeltaToTimeDelta(int64_t rtp_delta, |
| int rtp_timebase) { |
| DCHECK_GT(rtp_timebase, 0); |
| return rtp_delta * base::TimeDelta::FromSeconds(1) / rtp_timebase; |
| } |
| |
| inline int64_t 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_ |