Index: webrtc/api/video/video_timing.h |
diff --git a/webrtc/api/video/video_timing.h b/webrtc/api/video/video_timing.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..256ae3e6a9846493ef03b4355cc52236cadd1032 |
--- /dev/null |
+++ b/webrtc/api/video/video_timing.h |
@@ -0,0 +1,50 @@ |
+/* |
+ * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. |
+ * |
+ * Use of this source code is governed by a BSD-style license |
+ * that can be found in the LICENSE file in the root of the source |
+ * tree. An additional intellectual property rights grant can be found |
+ * in the file PATENTS. All contributing project authors may |
+ * be found in the AUTHORS file in the root of the source tree. |
+ */ |
+ |
+#ifndef WEBRTC_API_VIDEO_VIDEO_TIMING_H_ |
+#define WEBRTC_API_VIDEO_VIDEO_TIMING_H_ |
+ |
+#include <stdint.h> |
+#include <limits> |
+#include "webrtc/base/checks.h" |
+ |
+namespace webrtc { |
+ |
+// Video timing timstamps in ms counted from capture_time_ms of a frame. |
+struct VideoTiming { |
+ static const uint8_t kEncodeStartDeltaIdx = 0; |
+ static const uint8_t kEncodeFinishIdx = 1; |
+ static const uint8_t kPacketizationFinishDeltaIdx = 2; |
+ static const uint8_t kPacerExitDeltaIdx = 3; |
+ static const uint8_t kNetworkTimestampDeltaIdx = 4; |
+ |
+ // Returns |time_ms - base_ms| capped at max 16-bit value. |
+ // Used to fill this data structure as per |
+ // https://webrtc.org/experiments/rtp-hdrext/video-timing/ extension stores |
+ // 16-bit deltas of timestamps from packet capture time. |
+ static uint16_t GetDeltaCappedMs(int64_t base_ms, int64_t time_ms) { |
+ RTC_DCHECK_GE(time_ms, base_ms); |
ilnik
2017/06/01 12:33:37
Is this a good idea to crash here in debug? Should
|
+ int64_t delta = time_ms - base_ms; |
+ if (delta > std::numeric_limits<uint16_t>::max()) |
+ delta = std::numeric_limits<uint16_t>::max(); |
+ return static_cast<uint16_t>(delta); |
+ } |
+ |
+ uint16_t encode_start_ms_delta; |
+ uint16_t encode_finish_ms_delta; |
+ uint16_t packetization_finish_ms_delta; |
+ uint16_t pacer_exit_ms_delta; |
+ uint16_t network_timstamp_ms_delta; |
+ bool is_timing_frame; |
+}; |
+ |
+} // namespace webrtc |
+ |
+#endif // WEBRTC_API_VIDEO_VIDEO_TIMING_H_ |