Index: webrtc/base/timestampaligner.h |
diff --git a/webrtc/base/timestampaligner.h b/webrtc/base/timestampaligner.h |
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+/* |
+ * Copyright (c) 2016 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_BASE_TIMESTAMPALIGNER_H_ |
+#define WEBRTC_BASE_TIMESTAMPALIGNER_H_ |
+ |
+#include "webrtc/base/basictypes.h" |
+#include "webrtc/base/constructormagic.h" |
+#include "webrtc/base/optional.h" |
+ |
+namespace rtc { |
+ |
+class TimestampAligner { |
+ public: |
+ TimestampAligner(); |
+ ~TimestampAligner(); |
+ |
+ public: |
+ // Update the estimated offset between camera time and system monotonic time. |
+ int64_t UpdateOffset(int64_t camera_time_us, int64_t system_time_us); |
+ |
+ int64_t ClipTimestamp(int64_t filtered_time_us, int64_t system_time_us); |
+ |
+ private: |
+ // State for the timestamp translation. |
+ int frames_seen_; |
+ // Estimated offset between camera time and system monotonic time. |
+ int64_t offset_us_; |
+ |
+ // State for timestamp clipping, applied after the filter, to ensure |
+ // that translated timestamps are monotonic and not in the future. |
+ // Subtracted from the translated timestamps. |
+ int64_t clip_bias_us_; |
+ rtc::Optional<int64_t> prev_translated_time_us_; |
+ RTC_DISALLOW_COPY_AND_ASSIGN(TimestampAligner); |
+}; |
+ |
+} // namespace rtc |
+ |
+#endif // WEBRTC_BASE_TIMESTAMPALIGNER_H_ |