876222f77d
This brings QualityScaler much more in line with OveruseFrameDetector. The two classes are conceptually similar, and should be used in the same way. The biggest changes in this CL are: - Quality scaling is now only done in ViEEncoder and not in each encoder implementation separately. - QualityScaler now checks the average QP asynchronously, instead of having to be polled on each frame. - QualityScaler is no longer responsible for actually scaling the frames, but has a callback to ViEEncoder that it uses to express it's desire for lower resolution. BUG=webrtc:6495 Review-Url: https://codereview.webrtc.org/2398963003 Cr-Commit-Position: refs/heads/master@{#15286}
78 lines
2.7 KiB
C++
78 lines
2.7 KiB
C++
/*
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* Copyright (c) 2016 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 WEBRTC_MEDIA_ENGINE_VIDEOENCODERSOFTWAREFALLBACKWRAPPER_H_
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#define WEBRTC_MEDIA_ENGINE_VIDEOENCODERSOFTWAREFALLBACKWRAPPER_H_
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#include <memory>
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#include <string>
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#include <vector>
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#include "webrtc/media/base/codec.h"
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#include "webrtc/video_encoder.h"
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namespace webrtc {
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// Class used to wrap external VideoEncoders to provide a fallback option on
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// software encoding when a hardware encoder fails to encode a stream due to
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// hardware restrictions, such as max resolution.
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class VideoEncoderSoftwareFallbackWrapper : public VideoEncoder {
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public:
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VideoEncoderSoftwareFallbackWrapper(const cricket::VideoCodec& codec,
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webrtc::VideoEncoder* encoder);
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int32_t InitEncode(const VideoCodec* codec_settings,
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int32_t number_of_cores,
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size_t max_payload_size) override;
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int32_t RegisterEncodeCompleteCallback(
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EncodedImageCallback* callback) override;
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int32_t Release() override;
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int32_t Encode(const VideoFrame& frame,
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const CodecSpecificInfo* codec_specific_info,
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const std::vector<FrameType>* frame_types) override;
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int32_t SetChannelParameters(uint32_t packet_loss, int64_t rtt) override;
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int32_t SetRateAllocation(const BitrateAllocation& bitrate_allocation,
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uint32_t framerate) override;
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bool SupportsNativeHandle() const override;
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ScalingSettings GetScalingSettings() const override;
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private:
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bool InitFallbackEncoder();
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// Settings used in the last InitEncode call and used if a dynamic fallback to
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// software is required.
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VideoCodec codec_settings_;
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int32_t number_of_cores_;
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size_t max_payload_size_;
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// The last bitrate/framerate set, and a flag for noting they are set.
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bool rates_set_;
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BitrateAllocation bitrate_allocation_;
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uint32_t framerate_;
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// The last channel parameters set, and a flag for noting they are set.
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bool channel_parameters_set_;
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uint32_t packet_loss_;
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int64_t rtt_;
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const cricket::VideoCodec codec_;
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webrtc::VideoEncoder* const encoder_;
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std::unique_ptr<webrtc::VideoEncoder> fallback_encoder_;
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std::string fallback_implementation_name_;
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EncodedImageCallback* callback_;
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};
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} // namespace webrtc
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#endif // WEBRTC_MEDIA_ENGINE_VIDEOENCODERSOFTWAREFALLBACKWRAPPER_H_
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