75de46a966
Determining the EncoderInfo meta data is now done during InitEncode(). This implementation assums that no dynamic wrappers are wrapped in this simulcast encoder adapter. Ie, if supports_native_handle changes, InitEncode() must be called again for it to be reported properly. Bug: webrtc:9722 Change-Id: I7901effe11e89ac011659a4ea862ab2a42577eb5 Reviewed-on: https://webrtc-review.googlesource.com/c/109620 Reviewed-by: Rasmus Brandt <brandtr@webrtc.org> Commit-Queue: Erik Språng <sprang@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25549}
118 lines
4.1 KiB
C++
118 lines
4.1 KiB
C++
/*
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* Copyright (c) 2014 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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*/
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#ifndef MEDIA_ENGINE_SIMULCAST_ENCODER_ADAPTER_H_
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#define MEDIA_ENGINE_SIMULCAST_ENCODER_ADAPTER_H_
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#include <memory>
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#include <stack>
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#include <string>
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#include <utility>
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#include <vector>
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#include "absl/types/optional.h"
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#include "api/video_codecs/sdp_video_format.h"
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#include "modules/video_coding/include/video_codec_interface.h"
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#include "rtc_base/atomicops.h"
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#include "rtc_base/sequenced_task_checker.h"
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namespace webrtc {
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class SimulcastRateAllocator;
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class VideoEncoderFactory;
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// SimulcastEncoderAdapter implements simulcast support by creating multiple
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// webrtc::VideoEncoder instances with the given VideoEncoderFactory.
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// The object is created and destroyed on the worker thread, but all public
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// interfaces should be called from the encoder task queue.
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class SimulcastEncoderAdapter : public VideoEncoder {
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public:
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explicit SimulcastEncoderAdapter(VideoEncoderFactory* factory,
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const SdpVideoFormat& format);
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virtual ~SimulcastEncoderAdapter();
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// Implements VideoEncoder.
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int Release() override;
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int InitEncode(const VideoCodec* inst,
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int number_of_cores,
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size_t max_payload_size) override;
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int Encode(const VideoFrame& input_image,
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const CodecSpecificInfo* codec_specific_info,
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const std::vector<FrameType>* frame_types) override;
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int RegisterEncodeCompleteCallback(EncodedImageCallback* callback) override;
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int SetRateAllocation(const VideoBitrateAllocation& bitrate,
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uint32_t new_framerate) override;
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// Eventual handler for the contained encoders' EncodedImageCallbacks, but
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// called from an internal helper that also knows the correct stream
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// index.
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EncodedImageCallback::Result OnEncodedImage(
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size_t stream_idx,
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const EncodedImage& encoded_image,
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const CodecSpecificInfo* codec_specific_info,
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const RTPFragmentationHeader* fragmentation);
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EncoderInfo GetEncoderInfo() const override;
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private:
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struct StreamInfo {
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StreamInfo(std::unique_ptr<VideoEncoder> encoder,
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std::unique_ptr<EncodedImageCallback> callback,
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uint16_t width,
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uint16_t height,
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bool send_stream)
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: encoder(std::move(encoder)),
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callback(std::move(callback)),
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width(width),
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height(height),
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key_frame_request(false),
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send_stream(send_stream) {}
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std::unique_ptr<VideoEncoder> encoder;
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std::unique_ptr<EncodedImageCallback> callback;
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uint16_t width;
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uint16_t height;
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bool key_frame_request;
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bool send_stream;
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};
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// Populate the codec settings for each simulcast stream.
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void PopulateStreamCodec(const webrtc::VideoCodec& inst,
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int stream_index,
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uint32_t start_bitrate_kbps,
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bool highest_resolution_stream,
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webrtc::VideoCodec* stream_codec);
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bool Initialized() const;
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void DestroyStoredEncoders();
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volatile int inited_; // Accessed atomically.
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VideoEncoderFactory* const factory_;
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const SdpVideoFormat video_format_;
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VideoCodec codec_;
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std::vector<StreamInfo> streaminfos_;
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EncodedImageCallback* encoded_complete_callback_;
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EncoderInfo encoder_info_;
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// Used for checking the single-threaded access of the encoder interface.
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rtc::SequencedTaskChecker encoder_queue_;
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// Store encoders in between calls to Release and InitEncode, so they don't
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// have to be recreated. Remaining encoders are destroyed by the destructor.
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std::stack<std::unique_ptr<VideoEncoder>> stored_encoders_;
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const absl::optional<unsigned int> experimental_boosted_screenshare_qp_;
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};
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} // namespace webrtc
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#endif // MEDIA_ENGINE_SIMULCAST_ENCODER_ADAPTER_H_
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