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be9b576188
Step 1 of combining the sender and receiver types Also moved the RtpFrameObject to rtp_rtcp/source, as it's heavily used by the transformable receiver frame, I couldn't work out a better way of managing the dependencies, and everything else seemed to work fine. Bug: chromium:1412687 Change-Id: I55e816a0d7aa2962560ff9ebaf30ad63ab0b9810 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/291710 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Tony Herre <herre@google.com> Cr-Commit-Position: refs/heads/main@{#39255}
70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
/*
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* Copyright (c) 2020 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_SEQ_NUM_ONLY_REF_FINDER_H_
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#define MODULES_VIDEO_CODING_RTP_SEQ_NUM_ONLY_REF_FINDER_H_
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#include <deque>
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#include <map>
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#include <memory>
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#include <set>
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#include <utility>
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#include "absl/container/inlined_vector.h"
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#include "modules/rtp_rtcp/source/frame_object.h"
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#include "modules/video_coding/rtp_frame_reference_finder.h"
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#include "rtc_base/numerics/sequence_number_unwrapper.h"
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namespace webrtc {
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class RtpSeqNumOnlyRefFinder {
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public:
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RtpSeqNumOnlyRefFinder() = default;
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RtpFrameReferenceFinder::ReturnVector ManageFrame(
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std::unique_ptr<RtpFrameObject> frame);
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RtpFrameReferenceFinder::ReturnVector PaddingReceived(uint16_t seq_num);
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void ClearTo(uint16_t seq_num);
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private:
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static constexpr int kMaxStashedFrames = 100;
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static constexpr int kMaxPaddingAge = 100;
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enum FrameDecision { kStash, kHandOff, kDrop };
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FrameDecision ManageFrameInternal(RtpFrameObject* frame);
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void RetryStashedFrames(RtpFrameReferenceFinder::ReturnVector& res);
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void UpdateLastPictureIdWithPadding(uint16_t seq_num);
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// For every group of pictures, hold two sequence numbers. The first being
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// the sequence number of the last packet of the last completed frame, and
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// the second being the sequence number of the last packet of the last
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// completed frame advanced by any potential continuous packets of padding.
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std::map<uint16_t,
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std::pair<uint16_t, uint16_t>,
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DescendingSeqNumComp<uint16_t>>
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last_seq_num_gop_;
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// Padding packets that have been received but that are not yet continuous
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// with any group of pictures.
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std::set<uint16_t, DescendingSeqNumComp<uint16_t>> stashed_padding_;
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// Frames that have been fully received but didn't have all the information
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// needed to determine their references.
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std::deque<std::unique_ptr<RtpFrameObject>> stashed_frames_;
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// Unwrapper used to unwrap generic RTP streams. In a generic stream we derive
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// a picture id from the packet sequence number.
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SeqNumUnwrapper<uint16_t> rtp_seq_num_unwrapper_;
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};
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_RTP_SEQ_NUM_ONLY_REF_FINDER_H_
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