| /* |
| * Copyright (c) 2019 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 "api/video_codecs/vp8_temporal_layers_factory.h" |
| |
| #include <algorithm> |
| #include <memory> |
| #include <utility> |
| #include <vector> |
| |
| #include "api/fec_controller_override.h" |
| #include "modules/video_coding/codecs/vp8/default_temporal_layers.h" |
| #include "modules/video_coding/codecs/vp8/screenshare_layers.h" |
| #include "modules/video_coding/utility/simulcast_utility.h" |
| #include "rtc_base/checks.h" |
| |
| namespace webrtc { |
| |
| std::unique_ptr<Vp8FrameBufferController> Vp8TemporalLayersFactory::Create( |
| const VideoCodec& codec, |
| const VideoEncoder::Settings& settings, |
| FecControllerOverride* fec_controller_override) { |
| std::vector<std::unique_ptr<Vp8FrameBufferController>> controllers; |
| const int num_streams = SimulcastUtility::NumberOfSimulcastStreams(codec); |
| RTC_DCHECK_GE(num_streams, 1); |
| controllers.reserve(num_streams); |
| |
| for (int i = 0; i < num_streams; ++i) { |
| int num_temporal_layers = |
| SimulcastUtility::NumberOfTemporalLayers(codec, i); |
| if (SimulcastUtility::IsConferenceModeScreenshare(codec) && i == 0) { |
| // Legacy screenshare layers supports max 2 layers. |
| num_temporal_layers = std::max(2, num_temporal_layers); |
| controllers.push_back( |
| std::make_unique<ScreenshareLayers>(num_temporal_layers)); |
| } else { |
| controllers.push_back( |
| std::make_unique<DefaultTemporalLayers>(num_temporal_layers)); |
| } |
| } |
| |
| return std::make_unique<Vp8TemporalLayers>(std::move(controllers), |
| fec_controller_override); |
| } |
| |
| std::unique_ptr<Vp8FrameBufferControllerFactory> |
| Vp8TemporalLayersFactory::Clone() const { |
| return std::make_unique<Vp8TemporalLayersFactory>(); |
| } |
| |
| } // namespace webrtc |