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/*
* Copyright (c) 2018 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_generic_frame_descriptor.h"
#include <cstdint>
#include "rtc_base/checks.h"
namespace webrtc {
constexpr int RtpGenericFrameDescriptor::kMaxNumFrameDependencies;
constexpr int RtpGenericFrameDescriptor::kMaxTemporalLayers;
constexpr int RtpGenericFrameDescriptor::kMaxSpatialLayers;
RtpGenericFrameDescriptor::RtpGenericFrameDescriptor() = default;
RtpGenericFrameDescriptor::RtpGenericFrameDescriptor(
const RtpGenericFrameDescriptor&) = default;
RtpGenericFrameDescriptor::~RtpGenericFrameDescriptor() = default;
int RtpGenericFrameDescriptor::TemporalLayer() const {
RTC_DCHECK(FirstPacketInSubFrame());
return temporal_layer_;
}
void RtpGenericFrameDescriptor::SetTemporalLayer(int temporal_layer) {
RTC_DCHECK_GE(temporal_layer, 0);
RTC_DCHECK_LT(temporal_layer, kMaxTemporalLayers);
temporal_layer_ = temporal_layer;
}
int RtpGenericFrameDescriptor::SpatialLayer() const {
RTC_DCHECK(FirstPacketInSubFrame());
int layer = 0;
uint8_t spatial_layers = spatial_layers_;
while (spatial_layers_ != 0 && !(spatial_layers & 1)) {
spatial_layers >>= 1;
layer++;
}
return layer;
}
uint8_t RtpGenericFrameDescriptor::SpatialLayersBitmask() const {
RTC_DCHECK(FirstPacketInSubFrame());
return spatial_layers_;
}
void RtpGenericFrameDescriptor::SetSpatialLayersBitmask(
uint8_t spatial_layers) {
RTC_DCHECK(FirstPacketInSubFrame());
spatial_layers_ = spatial_layers;
}
void RtpGenericFrameDescriptor::SetResolution(int width, int height) {
RTC_DCHECK(FirstPacketInSubFrame());
RTC_DCHECK_GE(width, 0);
RTC_DCHECK_LE(width, 0xFFFF);
RTC_DCHECK_GE(height, 0);
RTC_DCHECK_LE(height, 0xFFFF);
width_ = width;
height_ = height;
}
uint16_t RtpGenericFrameDescriptor::FrameId() const {
RTC_DCHECK(FirstPacketInSubFrame());
return frame_id_;
}
void RtpGenericFrameDescriptor::SetFrameId(uint16_t frame_id) {
RTC_DCHECK(FirstPacketInSubFrame());
frame_id_ = frame_id;
}
rtc::ArrayView<const uint16_t>
RtpGenericFrameDescriptor::FrameDependenciesDiffs() const {
RTC_DCHECK(FirstPacketInSubFrame());
return rtc::MakeArrayView(frame_deps_id_diffs_, num_frame_deps_);
}
bool RtpGenericFrameDescriptor::AddFrameDependencyDiff(uint16_t fdiff) {
RTC_DCHECK(FirstPacketInSubFrame());
if (num_frame_deps_ == kMaxNumFrameDependencies)
return false;
if (fdiff == 0)
return false;
RTC_DCHECK_LT(fdiff, 1 << 14);
RTC_DCHECK_GT(fdiff, 0);
frame_deps_id_diffs_[num_frame_deps_] = fdiff;
num_frame_deps_++;
return true;
}
} // namespace webrtc
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