diff options
Diffstat (limited to 'modules/rtp_rtcp/source/absolute_capture_time_receiver.h')
| -rw-r--r-- | modules/rtp_rtcp/source/absolute_capture_time_receiver.h | 77 |
1 files changed, 8 insertions, 69 deletions
diff --git a/modules/rtp_rtcp/source/absolute_capture_time_receiver.h b/modules/rtp_rtcp/source/absolute_capture_time_receiver.h index ce3442b386..ad1bd7eb5d 100644 --- a/modules/rtp_rtcp/source/absolute_capture_time_receiver.h +++ b/modules/rtp_rtcp/source/absolute_capture_time_receiver.h @@ -11,89 +11,28 @@ #ifndef MODULES_RTP_RTCP_SOURCE_ABSOLUTE_CAPTURE_TIME_RECEIVER_H_ #define MODULES_RTP_RTCP_SOURCE_ABSOLUTE_CAPTURE_TIME_RECEIVER_H_ -#include "api/array_view.h" -#include "api/rtp_headers.h" -#include "api/units/time_delta.h" -#include "api/units/timestamp.h" -#include "rtc_base/synchronization/mutex.h" -#include "rtc_base/thread_annotations.h" +#include "modules/rtp_rtcp/source/absolute_capture_time_interpolator.h" +#include "modules/rtp_rtcp/source/capture_clock_offset_updater.h" #include "system_wrappers/include/clock.h" namespace webrtc { -// -// Helper class for receiving the |AbsoluteCaptureTime| header extension. -// -// Supports the "timestamp interpolation" optimization: -// A receiver SHOULD memorize the capture system (i.e. CSRC/SSRC), capture -// timestamp, and RTP timestamp of the most recently received abs-capture-time -// packet on each received stream. It can then use that information, in -// combination with RTP timestamps of packets without abs-capture-time, to -// extrapolate missing capture timestamps. -// -// See: https://webrtc.org/experiments/rtp-hdrext/abs-capture-time/ -// -class AbsoluteCaptureTimeReceiver { +// DEPRECATED. Use `AbsoluteCaptureTimeInterpolator` instead. +class AbsoluteCaptureTimeReceiver : public AbsoluteCaptureTimeInterpolator { public: - static constexpr TimeDelta kInterpolationMaxInterval = - TimeDelta::Millis(5000); - explicit AbsoluteCaptureTimeReceiver(Clock* clock); - // Returns the source (i.e. SSRC or CSRC) of the capture system. - static uint32_t GetSource(uint32_t ssrc, - rtc::ArrayView<const uint32_t> csrcs); - - // Sets the NTP clock offset between the sender system (which may be different - // from the capture system) and the local system. This information is normally - // provided by passing half the value of the Round-Trip Time estimation given - // by RTCP sender reports (see DLSR/DLRR). - // - // Note that the value must be in Q32.32-formatted fixed-point seconds. - void SetRemoteToLocalClockOffset(absl::optional<int64_t> value_q32x32); - - // Returns a received header extension, an interpolated header extension, or - // |absl::nullopt| if it's not possible to interpolate a header extension. absl::optional<AbsoluteCaptureTime> OnReceivePacket( uint32_t source, uint32_t rtp_timestamp, uint32_t rtp_clock_frequency, const absl::optional<AbsoluteCaptureTime>& received_extension); - private: - friend class AbsoluteCaptureTimeSender; - - static uint64_t InterpolateAbsoluteCaptureTimestamp( - uint32_t rtp_timestamp, - uint32_t rtp_clock_frequency, - uint32_t last_rtp_timestamp, - uint64_t last_absolute_capture_timestamp); - - bool ShouldInterpolateExtension(Timestamp receive_time, - uint32_t source, - uint32_t rtp_timestamp, - uint32_t rtp_clock_frequency) const - RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_); - - absl::optional<int64_t> AdjustEstimatedCaptureClockOffset( - absl::optional<int64_t> received_value) const - RTC_EXCLUSIVE_LOCKS_REQUIRED(mutex_); - - Clock* const clock_; - - Mutex mutex_; - - absl::optional<int64_t> remote_to_local_clock_offset_ RTC_GUARDED_BY(mutex_); - - Timestamp last_receive_time_ RTC_GUARDED_BY(mutex_); + void SetRemoteToLocalClockOffset(absl::optional<int64_t> value_q32x32); - uint32_t last_source_ RTC_GUARDED_BY(mutex_); - uint32_t last_rtp_timestamp_ RTC_GUARDED_BY(mutex_); - uint32_t last_rtp_clock_frequency_ RTC_GUARDED_BY(mutex_); - uint64_t last_absolute_capture_timestamp_ RTC_GUARDED_BY(mutex_); - absl::optional<int64_t> last_estimated_capture_clock_offset_ - RTC_GUARDED_BY(mutex_); -}; // AbsoluteCaptureTimeReceiver + private: + CaptureClockOffsetUpdater capture_clock_offset_updater_; +}; } // namespace webrtc |