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| 1 /* |
| 2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 |
| 11 #ifndef WEBRTC_API_VIDEO_VIDEO_TIMING_H_ |
| 12 #define WEBRTC_API_VIDEO_VIDEO_TIMING_H_ |
| 13 |
| 14 #include <stdint.h> |
| 15 #include <limits> |
| 16 #include "webrtc/base/checks.h" |
| 17 #include "webrtc/base/safe_conversions.h" |
| 18 |
| 19 namespace webrtc { |
| 20 |
| 21 // Video timing timstamps in ms counted from capture_time_ms of a frame. |
| 22 struct VideoTiming { |
| 23 static const uint8_t kEncodeStartDeltaIdx = 0; |
| 24 static const uint8_t kEncodeFinishDeltaIdx = 1; |
| 25 static const uint8_t kPacketizationFinishDeltaIdx = 2; |
| 26 static const uint8_t kPacerExitDeltaIdx = 3; |
| 27 static const uint8_t kNetworkTimestampDeltaIdx = 4; |
| 28 static const uint8_t kNetwork2TimestampDeltaIdx = 5; |
| 29 |
| 30 // Returns |time_ms - base_ms| capped at max 16-bit value. |
| 31 // Used to fill this data structure as per |
| 32 // https://webrtc.org/experiments/rtp-hdrext/video-timing/ extension stores |
| 33 // 16-bit deltas of timestamps from packet capture time. |
| 34 static uint16_t GetDeltaCappedMs(int64_t base_ms, int64_t time_ms) { |
| 35 RTC_DCHECK_GE(time_ms, base_ms); |
| 36 return rtc::saturated_cast<uint16_t>(time_ms - base_ms); |
| 37 } |
| 38 |
| 39 uint16_t encode_start_delta_ms; |
| 40 uint16_t encode_finish_delta_ms; |
| 41 uint16_t packetization_finish_delta_ms; |
| 42 uint16_t pacer_exit_delta_ms; |
| 43 uint16_t network_timstamp_delta_ms; |
| 44 uint16_t network2_timstamp_delta_ms; |
| 45 bool is_timing_frame; |
| 46 }; |
| 47 |
| 48 } // namespace webrtc |
| 49 |
| 50 #endif // WEBRTC_API_VIDEO_VIDEO_TIMING_H_ |
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