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ee59a17bbb
on receiver and on sender Bug: webrtc:9795 Change-Id: I13dfcc6dce0be55d90406e27ba855ef5e786af24 Reviewed-on: https://webrtc-review.googlesource.com/c/104900 Reviewed-by: Philip Eliasson <philipel@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25889}
118 lines
3.6 KiB
C++
118 lines
3.6 KiB
C++
/*
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* Copyright (c) 2018 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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#include "modules/rtp_rtcp/source/rtp_generic_frame_descriptor.h"
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#include <cstdint>
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#include "rtc_base/checks.h"
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namespace webrtc {
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constexpr int RtpGenericFrameDescriptor::kMaxNumFrameDependencies;
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constexpr int RtpGenericFrameDescriptor::kMaxTemporalLayers;
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constexpr int RtpGenericFrameDescriptor::kMaxSpatialLayers;
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RtpGenericFrameDescriptor::RtpGenericFrameDescriptor() = default;
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RtpGenericFrameDescriptor::RtpGenericFrameDescriptor(
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const RtpGenericFrameDescriptor&) = default;
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RtpGenericFrameDescriptor::~RtpGenericFrameDescriptor() = default;
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int RtpGenericFrameDescriptor::TemporalLayer() const {
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RTC_DCHECK(FirstPacketInSubFrame());
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return temporal_layer_;
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}
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void RtpGenericFrameDescriptor::SetTemporalLayer(int temporal_layer) {
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RTC_DCHECK_GE(temporal_layer, 0);
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RTC_DCHECK_LT(temporal_layer, kMaxTemporalLayers);
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temporal_layer_ = temporal_layer;
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}
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int RtpGenericFrameDescriptor::SpatialLayer() const {
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RTC_DCHECK(FirstPacketInSubFrame());
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int layer = 0;
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uint8_t spatial_layers = spatial_layers_;
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while (spatial_layers_ != 0 && !(spatial_layers & 1)) {
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spatial_layers >>= 1;
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layer++;
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}
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return layer;
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}
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uint8_t RtpGenericFrameDescriptor::SpatialLayersBitmask() const {
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RTC_DCHECK(FirstPacketInSubFrame());
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return spatial_layers_;
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}
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void RtpGenericFrameDescriptor::SetSpatialLayersBitmask(
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uint8_t spatial_layers) {
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RTC_DCHECK(FirstPacketInSubFrame());
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spatial_layers_ = spatial_layers;
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}
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void RtpGenericFrameDescriptor::SetResolution(int width, int height) {
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RTC_DCHECK(FirstPacketInSubFrame());
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RTC_DCHECK_GE(width, 0);
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RTC_DCHECK_LE(width, 0xFFFF);
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RTC_DCHECK_GE(height, 0);
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RTC_DCHECK_LE(height, 0xFFFF);
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width_ = width;
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height_ = height;
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}
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uint16_t RtpGenericFrameDescriptor::FrameId() const {
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RTC_DCHECK(FirstPacketInSubFrame());
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return frame_id_;
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}
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void RtpGenericFrameDescriptor::SetFrameId(uint16_t frame_id) {
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RTC_DCHECK(FirstPacketInSubFrame());
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frame_id_ = frame_id;
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}
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rtc::ArrayView<const uint16_t>
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RtpGenericFrameDescriptor::FrameDependenciesDiffs() const {
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RTC_DCHECK(FirstPacketInSubFrame());
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return rtc::MakeArrayView(frame_deps_id_diffs_, num_frame_deps_);
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}
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bool RtpGenericFrameDescriptor::AddFrameDependencyDiff(uint16_t fdiff) {
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RTC_DCHECK(FirstPacketInSubFrame());
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if (num_frame_deps_ == kMaxNumFrameDependencies)
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return false;
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if (fdiff == 0)
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return false;
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RTC_DCHECK_LT(fdiff, 1 << 14);
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RTC_DCHECK_GT(fdiff, 0);
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frame_deps_id_diffs_[num_frame_deps_] = fdiff;
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num_frame_deps_++;
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return true;
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}
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void RtpGenericFrameDescriptor::SetByteRepresentation(
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rtc::ArrayView<const uint8_t> byte_representation) {
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RTC_CHECK(!byte_representation.empty());
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byte_representation_.assign(byte_representation.begin(),
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byte_representation.end());
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// Clear end_of_subframe bit.
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// Because ByteRepresentation is used for frame authentication, bit describing
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// position of the packet in the frame shouldn't be part of it.
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// This match RtpVideoSender where descriptor is passed for authentication
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// before end_of_subframe bit is decided and set, i.e. it is always 0.
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byte_representation_[0] &= ~0x40;
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}
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rtc::ArrayView<const uint8_t>
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RtpGenericFrameDescriptor::GetByteRepresentation() {
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return byte_representation_;
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}
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} // namespace webrtc
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