1 /* 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef VIDEO_CONFIG_SIMULCAST_H_ 12 #define VIDEO_CONFIG_SIMULCAST_H_ 13 14 #include <stddef.h> 15 16 #include <vector> 17 18 #include "api/field_trials_view.h" 19 #include "api/units/data_rate.h" 20 #include "video/config/video_encoder_config.h" 21 22 namespace cricket { 23 24 // Gets the total maximum bitrate for the `streams`. 25 webrtc::DataRate GetTotalMaxBitrate( 26 const std::vector<webrtc::VideoStream>& streams); 27 28 // Adds any bitrate of `max_bitrate` that is above the total maximum bitrate for 29 // the `layers` to the highest quality layer. 30 void BoostMaxSimulcastLayer(webrtc::DataRate max_bitrate, 31 std::vector<webrtc::VideoStream>* layers); 32 33 // Round size to nearest simulcast-friendly size 34 int NormalizeSimulcastSize(int size, size_t simulcast_layers); 35 36 // Gets simulcast settings. 37 std::vector<webrtc::VideoStream> GetSimulcastConfig( 38 size_t min_layers, 39 size_t max_layers, 40 int width, 41 int height, 42 double bitrate_priority, 43 int max_qp, 44 bool is_screenshare_with_conference_mode, 45 bool temporal_layers_supported, 46 const webrtc::FieldTrialsView& trials); 47 48 // Gets the simulcast config layers for a non-screensharing case. 49 std::vector<webrtc::VideoStream> GetNormalSimulcastLayers( 50 size_t max_layers, 51 int width, 52 int height, 53 double bitrate_priority, 54 int max_qp, 55 bool temporal_layers_supported, 56 bool base_heavy_tl3_rate_alloc, 57 const webrtc::FieldTrialsView& trials); 58 59 // Gets simulcast config layers for screenshare settings. 60 std::vector<webrtc::VideoStream> GetScreenshareLayers( 61 size_t max_layers, 62 int width, 63 int height, 64 double bitrate_priority, 65 int max_qp, 66 bool temporal_layers_supported, 67 bool base_heavy_tl3_rate_alloc, 68 const webrtc::FieldTrialsView& trials); 69 70 } // namespace cricket 71 72 #endif // VIDEO_CONFIG_SIMULCAST_H_ 73