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92ea95e34a
In https://webrtc-review.googlesource.com/c/src/+/1560 we moved WebRTC from src/webrtc to src/ (in order to preserve an healthy git history). This CL takes care of fixing header guards, #include paths, etc... NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iea91618212bee0af16aa3f05071eab8f93706578 Reviewed-on: https://webrtc-review.googlesource.com/1561 Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19846}
66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
/* Copyright (c) 2015 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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#ifndef MODULES_VIDEO_CODING_CODECS_VP9_SCREENSHARE_LAYERS_H_
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#define MODULES_VIDEO_CODING_CODECS_VP9_SCREENSHARE_LAYERS_H_
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#include "modules/video_coding/codecs/vp9/vp9_impl.h"
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namespace webrtc {
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class ScreenshareLayersVP9 {
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public:
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explicit ScreenshareLayersVP9(uint8_t num_layers);
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// The target bitrate for layer with id layer_id.
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void ConfigureBitrate(int threshold_kbps, uint8_t layer_id);
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// The current start layer.
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uint8_t GetStartLayer() const;
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// Update the layer with the size of the layer frame.
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void LayerFrameEncoded(unsigned int size_bytes, uint8_t layer_id);
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// Get the layer settings for the next superframe.
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//
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// In short, each time the GetSuperFrameSettings is called the
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// bitrate of every layer is calculated and if the cummulative
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// bitrate exceeds the configured cummulative bitrates
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// (ConfigureBitrate to configure) up to and including that
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// layer then the resulting encoding settings for the
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// superframe will only encode layers above that layer.
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VP9EncoderImpl::SuperFrameRefSettings GetSuperFrameSettings(
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uint32_t timestamp,
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bool is_keyframe);
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private:
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// How many layers that are used.
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uint8_t num_layers_;
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// The index of the first layer to encode.
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uint8_t start_layer_;
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// Cummulative target kbps for the different layers.
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float threshold_kbps_[kMaxVp9NumberOfSpatialLayers - 1];
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// How many bits that has been used for a certain layer. Increased in
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// FrameEncoded() by the size of the encoded frame and decreased in
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// GetSuperFrameSettings() depending on the time between frames.
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float bits_used_[kMaxVp9NumberOfSpatialLayers];
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// Timestamp of last frame.
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uint32_t last_timestamp_;
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// If the last_timestamp_ has been set.
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bool timestamp_initialized_;
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};
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} // namespace webrtc
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#endif // MODULES_VIDEO_CODING_CODECS_VP9_SCREENSHARE_LAYERS_H_
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