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dcd7fc7ea8
Bug: webrtc:12338 Change-Id: Ia8a9adea291d594e4f59a6a1203a7bfb0758adac Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/227165 Commit-Queue: Artem Titov <titovartem@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/master@{#34684}
60 lines
2.2 KiB
C++
60 lines
2.2 KiB
C++
/*
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* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_VIDEO_CODING_RTP_FRAME_REFERENCE_FINDER_H_
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#define MODULES_VIDEO_CODING_RTP_FRAME_REFERENCE_FINDER_H_
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#include <memory>
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#include "modules/video_coding/frame_object.h"
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namespace webrtc {
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namespace internal {
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class RtpFrameReferenceFinderImpl;
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} // namespace internal
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class RtpFrameReferenceFinder {
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public:
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using ReturnVector = absl::InlinedVector<std::unique_ptr<RtpFrameObject>, 3>;
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RtpFrameReferenceFinder();
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explicit RtpFrameReferenceFinder(int64_t picture_id_offset);
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~RtpFrameReferenceFinder();
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// The RtpFrameReferenceFinder will hold onto the frame until:
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// - the required information to determine its references has been received,
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// in which case it (and possibly other) frames are returned, or
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// - There are too many stashed frames (determined by `kMaxStashedFrames`),
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// in which case it gets dropped, or
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// - It gets cleared by ClearTo, in which case its dropped.
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// - The frame is old, in which case it also gets dropped.
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ReturnVector ManageFrame(std::unique_ptr<RtpFrameObject> frame);
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// Notifies that padding has been received, which the reference finder
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// might need to calculate the references of a frame.
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ReturnVector PaddingReceived(uint16_t seq_num);
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// Clear all stashed frames that include packets older than `seq_num`.
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void ClearTo(uint16_t seq_num);
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private:
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void AddPictureIdOffset(ReturnVector& frames);
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// How far frames have been cleared out of the buffer by RTP sequence number.
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// A frame will be cleared if it contains a packet with a sequence number
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// older than `cleared_to_seq_num_`.
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int cleared_to_seq_num_ = -1;
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const int64_t picture_id_offset_;
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std::unique_ptr<internal::RtpFrameReferenceFinderImpl> impl_;
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};
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_RTP_FRAME_REFERENCE_FINDER_H_
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