mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-14 14:20:45 +01:00
421088815f
RtpVideoSender now stores fec type and overhead instead of querying the generator all the time. Setting of protection parameters and asking for current bitrate is also now handled just by the VideoFecGenerator instance, instead of going via RtpVideoSender. Finally, adds method to query for RtpState in VideoFecGenerator interface. This avoids an ugly cast that would have been even more trouble after moving fec generation. For context, see https://webrtc-review.googlesource.com/c/src/+/173708 Bug: webrtc:11340 Change-Id: Ia5e6cd919e71850c9cc5ed5a4f4417338d577162 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/174203 Commit-Queue: Erik Språng <sprang@webrtc.org> Reviewed-by: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#31166}
54 lines
2.3 KiB
C++
54 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) 2019 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_RTP_RTCP_SOURCE_VIDEO_FEC_GENERATOR_H_
|
|
#define MODULES_RTP_RTCP_SOURCE_VIDEO_FEC_GENERATOR_H_
|
|
|
|
#include <memory>
|
|
#include <vector>
|
|
|
|
#include "api/units/data_rate.h"
|
|
#include "modules/include/module_fec_types.h"
|
|
#include "modules/rtp_rtcp/source/rtp_packet_to_send.h"
|
|
|
|
namespace webrtc {
|
|
|
|
class VideoFecGenerator {
|
|
public:
|
|
VideoFecGenerator() = default;
|
|
virtual ~VideoFecGenerator() = default;
|
|
|
|
enum class FecType { kFlexFec, kUlpFec };
|
|
virtual FecType GetFecType() const = 0;
|
|
// Returns the SSRC used for FEC packets (i.e. FlexFec SSRC).
|
|
virtual absl::optional<uint32_t> FecSsrc() = 0;
|
|
// Returns the overhead, in bytes per packet, for FEC (and possibly RED).
|
|
virtual size_t MaxPacketOverhead() const = 0;
|
|
// Current rate of FEC packets generated, including all RTP-level headers.
|
|
virtual DataRate CurrentFecRate() const = 0;
|
|
// Set FEC rates, max frames before FEC is sent, and type of FEC masks.
|
|
virtual void SetProtectionParameters(
|
|
const FecProtectionParams& delta_params,
|
|
const FecProtectionParams& key_params) = 0;
|
|
// Called on new media packet to be protected. The generator may choose
|
|
// to generate FEC packets at this time, if so they will be stored in an
|
|
// internal buffer.
|
|
virtual void AddPacketAndGenerateFec(const RtpPacketToSend& packet) = 0;
|
|
// Get (and remove) and FEC packets pending in the generator. These packets
|
|
// will lack sequence numbers, that needs to be set externally.
|
|
// TODO(bugs.webrtc.org/11340): Actually FlexFec sets seq#, fix that!
|
|
virtual std::vector<std::unique_ptr<RtpPacketToSend>> GetFecPackets() = 0;
|
|
// Only called on the VideoSendStream queue, after operation has shut down,
|
|
// and only populated if there is an RtpState (e.g. FlexFec).
|
|
virtual absl::optional<RtpState> GetRtpState() = 0;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
#endif // MODULES_RTP_RTCP_SOURCE_VIDEO_FEC_GENERATOR_H_
|