51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
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/**
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* Copyright (c) 2026
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#ifndef RTC_VIDEO_LAYERS_ALLOCATION_H
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#define RTC_VIDEO_LAYERS_ALLOCATION_H
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#if RTC_ENABLE_MEDIA
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#include "common.hpp"
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#include <cstdint>
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#include <memory>
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#include <vector>
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namespace rtc {
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// Google Video Layers Allocation for simulcast
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//
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// https://webrtc.googlesource.com/src/+/refs/heads/main/docs/native-code/rtp-hdrext/video-layers-allocation00
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struct RTC_CPP_EXPORT VideoLayersAllocation {
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struct SpatialLayer {
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uint16_t width = 0;
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uint16_t height = 0;
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uint8_t fps = 0;
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std::vector<uint32_t> targetBitratesKbps; // per temporal layer, cumulative, cannot be empty
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};
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struct RtpStream {
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std::vector<SpatialLayer> spatialLayers;
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};
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std::vector<RtpStream> rtpStreams; // up to 4 streams
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/// Generate the wire format for Google Video Layers Allocation RTP header extension
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/// @param streamIndex The RTP stream index (0-3) for this packet's stream
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/// @return Binary payload for the RTP header extension, empty if allocation is invalid
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binary generate(uint8_t streamIndex) const;
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};
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} // namespace rtc
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#endif /* RTC_ENABLE_MEDIA */
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#endif /* RTC_VIDEO_LAYERS_ALLOCATION_H */
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