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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /third_party/libwebrtc/modules/video_coding/timing/inter_frame_delay_variation_calculator.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/modules/video_coding/timing/inter_frame_delay_variation_calculator.h')
-rw-r--r-- | third_party/libwebrtc/modules/video_coding/timing/inter_frame_delay_variation_calculator.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/video_coding/timing/inter_frame_delay_variation_calculator.h b/third_party/libwebrtc/modules/video_coding/timing/inter_frame_delay_variation_calculator.h new file mode 100644 index 0000000000..c1d3d205ad --- /dev/null +++ b/third_party/libwebrtc/modules/video_coding/timing/inter_frame_delay_variation_calculator.h @@ -0,0 +1,48 @@ +/* + * Copyright (c) 2011 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 MODULES_VIDEO_CODING_TIMING_INTER_FRAME_DELAY_VARIATION_CALCULATOR_H_ +#define MODULES_VIDEO_CODING_TIMING_INTER_FRAME_DELAY_VARIATION_CALCULATOR_H_ + +#include <stdint.h> + +#include "absl/types/optional.h" +#include "api/units/time_delta.h" +#include "api/units/timestamp.h" +#include "rtc_base/numerics/sequence_number_unwrapper.h" + +namespace webrtc { + +// This class calculates the inter-frame delay variation (see RFC5481) between +// the current frame (as supplied through the current call to `Calculate`) and +// the previous frame (as supplied through the previous call to `Calculate`). +class InterFrameDelayVariationCalculator { + public: + InterFrameDelayVariationCalculator(); + + // Resets the calculator. + void Reset(); + + // Calculates the inter-frame delay variation of a frame with the given + // RTP timestamp. This method is called when the frame is complete. + absl::optional<TimeDelta> Calculate(uint32_t rtp_timestamp, Timestamp now); + + private: + // The previous wall clock timestamp used in the calculation. + absl::optional<Timestamp> prev_wall_clock_; + // The previous RTP timestamp used in the calculation. + int64_t prev_rtp_timestamp_unwrapped_; + + RtpTimestampUnwrapper unwrapper_; +}; + +} // namespace webrtc + +#endif // MODULES_VIDEO_CODING_TIMING_INTER_FRAME_DELAY_VARIATION_CALCULATOR_H_ |