mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-15 06:40:43 +01:00
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}
105 lines
3.5 KiB
C++
105 lines
3.5 KiB
C++
/*
|
|
* Copyright (c) 2020 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_RTP_VP9_REF_FINDER_H_
|
|
#define MODULES_VIDEO_CODING_RTP_VP9_REF_FINDER_H_
|
|
|
|
#include <deque>
|
|
#include <map>
|
|
#include <memory>
|
|
#include <set>
|
|
|
|
#include "absl/container/inlined_vector.h"
|
|
#include "modules/rtp_rtcp/source/frame_object.h"
|
|
#include "modules/video_coding/rtp_frame_reference_finder.h"
|
|
#include "rtc_base/numerics/sequence_number_unwrapper.h"
|
|
|
|
namespace webrtc {
|
|
|
|
class RtpVp9RefFinder {
|
|
public:
|
|
RtpVp9RefFinder() = default;
|
|
|
|
RtpFrameReferenceFinder::ReturnVector ManageFrame(
|
|
std::unique_ptr<RtpFrameObject> frame);
|
|
void ClearTo(uint16_t seq_num);
|
|
|
|
private:
|
|
static constexpr int kFrameIdLength = 1 << 15;
|
|
static constexpr int kMaxGofSaved = 50;
|
|
static constexpr int kMaxLayerInfo = 50;
|
|
static constexpr int kMaxNotYetReceivedFrames = 100;
|
|
static constexpr int kMaxStashedFrames = 100;
|
|
static constexpr int kMaxTemporalLayers = 5;
|
|
|
|
enum FrameDecision { kStash, kHandOff, kDrop };
|
|
|
|
struct GofInfo {
|
|
GofInfo(GofInfoVP9* gof, uint16_t last_picture_id)
|
|
: gof(gof), last_picture_id(last_picture_id) {}
|
|
GofInfoVP9* gof;
|
|
uint16_t last_picture_id;
|
|
};
|
|
|
|
struct UnwrappedTl0Frame {
|
|
int64_t unwrapped_tl0;
|
|
std::unique_ptr<RtpFrameObject> frame;
|
|
};
|
|
|
|
FrameDecision ManageFrameFlexible(RtpFrameObject* frame,
|
|
const RTPVideoHeaderVP9& vp9_header);
|
|
FrameDecision ManageFrameGof(RtpFrameObject* frame,
|
|
const RTPVideoHeaderVP9& vp9_header,
|
|
int64_t unwrapped_tl0);
|
|
void RetryStashedFrames(RtpFrameReferenceFinder::ReturnVector& res);
|
|
|
|
bool MissingRequiredFrameVp9(uint16_t picture_id, const GofInfo& info);
|
|
|
|
void FrameReceivedVp9(uint16_t picture_id, GofInfo* info);
|
|
bool UpSwitchInIntervalVp9(uint16_t picture_id,
|
|
uint8_t temporal_idx,
|
|
uint16_t pid_ref);
|
|
|
|
void FlattenFrameIdAndRefs(RtpFrameObject* frame, bool inter_layer_predicted);
|
|
|
|
// Frames that have been fully received but didn't have all the information
|
|
// needed to determine their references.
|
|
std::deque<UnwrappedTl0Frame> stashed_frames_;
|
|
|
|
// Where the current scalability structure is in the
|
|
// `scalability_structures_` array.
|
|
uint8_t current_ss_idx_ = 0;
|
|
|
|
// Holds received scalability structures.
|
|
std::array<GofInfoVP9, kMaxGofSaved> scalability_structures_;
|
|
|
|
// Holds the the Gof information for a given unwrapped TL0 picture index.
|
|
std::map<int64_t, GofInfo> gof_info_;
|
|
|
|
// Keep track of which picture id and which temporal layer that had the
|
|
// up switch flag set.
|
|
std::map<uint16_t, uint8_t, DescendingSeqNumComp<uint16_t, kFrameIdLength>>
|
|
up_switch_;
|
|
|
|
// For every temporal layer, keep a set of which frames that are missing.
|
|
std::array<std::set<uint16_t, DescendingSeqNumComp<uint16_t, kFrameIdLength>>,
|
|
kMaxTemporalLayers>
|
|
missing_frames_for_layer_;
|
|
|
|
// Unwrapper used to unwrap VP8/VP9 streams which have their picture id
|
|
// specified.
|
|
SeqNumUnwrapper<uint16_t, kFrameIdLength> unwrapper_;
|
|
|
|
SeqNumUnwrapper<uint8_t> tl0_unwrapper_;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
|
|
#endif // MODULES_VIDEO_CODING_RTP_VP9_REF_FINDER_H_
|