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-rw-r--r-- | third_party/libwebrtc/api/video/video_layers_allocation.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/video/video_layers_allocation.h b/third_party/libwebrtc/api/video/video_layers_allocation.h new file mode 100644 index 0000000000..39734151ae --- /dev/null +++ b/third_party/libwebrtc/api/video/video_layers_allocation.h @@ -0,0 +1,77 @@ +/* + * 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. + */ + +#ifndef API_VIDEO_VIDEO_LAYERS_ALLOCATION_H_ +#define API_VIDEO_VIDEO_LAYERS_ALLOCATION_H_ + +#include <cstdint> + +#include "absl/container/inlined_vector.h" +#include "api/units/data_rate.h" + +namespace webrtc { + +// This struct contains additional stream-level information needed by a +// Selective Forwarding Middlebox to make relay decisions of RTP streams. +struct VideoLayersAllocation { + static constexpr int kMaxSpatialIds = 4; + static constexpr int kMaxTemporalIds = 4; + + friend bool operator==(const VideoLayersAllocation& lhs, + const VideoLayersAllocation& rhs) { + return lhs.rtp_stream_index == rhs.rtp_stream_index && + lhs.resolution_and_frame_rate_is_valid == + rhs.resolution_and_frame_rate_is_valid && + lhs.active_spatial_layers == rhs.active_spatial_layers; + } + + friend bool operator!=(const VideoLayersAllocation& lhs, + const VideoLayersAllocation& rhs) { + return !(lhs == rhs); + } + + struct SpatialLayer { + friend bool operator==(const SpatialLayer& lhs, const SpatialLayer& rhs) { + return lhs.rtp_stream_index == rhs.rtp_stream_index && + lhs.spatial_id == rhs.spatial_id && + lhs.target_bitrate_per_temporal_layer == + rhs.target_bitrate_per_temporal_layer && + lhs.width == rhs.width && lhs.height == rhs.height && + lhs.frame_rate_fps == rhs.frame_rate_fps; + } + + friend bool operator!=(const SpatialLayer& lhs, const SpatialLayer& rhs) { + return !(lhs == rhs); + } + int rtp_stream_index = 0; + // Index of the spatial layer per `rtp_stream_index`. + int spatial_id = 0; + // Target bitrate per decode target. + absl::InlinedVector<DataRate, kMaxTemporalIds> + target_bitrate_per_temporal_layer; + + // These fields are only valid if `resolution_and_frame_rate_is_valid` is + // true + uint16_t width = 0; + uint16_t height = 0; + // Max frame rate used in any temporal layer of this spatial layer. + uint8_t frame_rate_fps = 0; + }; + + // Index of the rtp stream this allocation is sent on. Used for mapping + // a SpatialLayer to a rtp stream. + int rtp_stream_index = 0; + bool resolution_and_frame_rate_is_valid = false; + absl::InlinedVector<SpatialLayer, kMaxSpatialIds> active_spatial_layers; +}; + +} // namespace webrtc + +#endif // API_VIDEO_VIDEO_LAYERS_ALLOCATION_H_ |