chromium/third_party/webrtc/modules/rtp_rtcp/source/rtp_video_layers_allocation_extension.cc

/*
 *  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.
 */

#include "modules/rtp_rtcp/source/rtp_video_layers_allocation_extension.h"

#include <stddef.h>
#include <stdint.h>

#include "absl/algorithm/container.h"
#include "api/video/video_layers_allocation.h"
#include "modules/rtp_rtcp/source/byte_io.h"
#include "modules/rtp_rtcp/source/leb128.h"
#include "rtc_base/checks.h"

namespace webrtc {

constexpr RTPExtensionType RtpVideoLayersAllocationExtension::kId;

namespace {

constexpr int kMaxNumRtpStreams = …;

bool AllocationIsValid(const VideoLayersAllocation& allocation) { … }

struct SpatialLayersBitmasks { … };

SpatialLayersBitmasks SpatialLayersBitmasksPerRtpStream(
    const VideoLayersAllocation& allocation) { … }

}  // namespace

// See /docs/native-code/rtp-rtpext/video-layers-allocation00/README.md
// for the description of the format.

bool RtpVideoLayersAllocationExtension::Write(
    rtc::ArrayView<uint8_t> data,
    const VideoLayersAllocation& allocation) { … }

bool RtpVideoLayersAllocationExtension::Parse(
    rtc::ArrayView<const uint8_t> data,
    VideoLayersAllocation* allocation) { … }

size_t RtpVideoLayersAllocationExtension::ValueSize(
    const VideoLayersAllocation& allocation) { … }

}  // namespace webrtc