webrtc/media/engine/simulcast_encoder_adapter.h
Mirko Bonadei 6f440ed5b5 Revert "Implement H264 simulcast support and generalize SimulcastEncoderAdapter use for H264 & VP8."
This reverts commit 07efe436c9.

Reason for revert: Breaks downstream project.

cricket::GetSimulcastConfig method signature has been updated.
I think you can get away with a default value for temporal_layers_supported (and then you can remove it after a few days when projects will be updated).


Original change's description:
> Implement H264 simulcast support and generalize SimulcastEncoderAdapter use for H264 & VP8.
> 
> * Move SimulcastEncoderAdapter out under modules/video_coding
> * Move SimulcastRateAllocator back out to modules/video_coding/utility
> * Move TemporalLayers and ScreenshareLayers to modules/video_coding/utility
> * Move any VP8 specific code - such as temporal layer bitrate budgeting -
>   under codec type dependent conditionals.
> * Plumb the simulcast index for H264 in the codec specific and RTP format data structures.
> 
> Bug: webrtc:5840
> Change-Id: Ieced8a00e38f273c1a6cfd0f5431a87d07b8f44e
> Reviewed-on: https://webrtc-review.googlesource.com/64100
> Commit-Queue: Harald Alvestrand <hta@webrtc.org>
> Reviewed-by: Stefan Holmer <stefan@webrtc.org>
> Reviewed-by: Erik Språng <sprang@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#23705}

TBR=sprang@webrtc.org,stefan@webrtc.org,mflodman@webrtc.org,hta@webrtc.org,sergio.garcia.murillo@gmail.com,titovartem@webrtc.org,agouaillard@gmail.com

Change-Id: Ic9d3b1eeaf195bb5ec2063954421f5e77866d663
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: webrtc:5840
Reviewed-on: https://webrtc-review.googlesource.com/84760
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23710}
2018-06-21 13:41:14 +00:00

118 lines
4.2 KiB
C++

/*
* Copyright (c) 2014 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.
*
*/
#ifndef MEDIA_ENGINE_SIMULCAST_ENCODER_ADAPTER_H_
#define MEDIA_ENGINE_SIMULCAST_ENCODER_ADAPTER_H_
#include <memory>
#include <stack>
#include <string>
#include <utility>
#include <vector>
#include "media/engine/webrtcvideoencoderfactory.h"
#include "modules/video_coding/codecs/vp8/include/vp8.h"
#include "rtc_base/atomicops.h"
#include "rtc_base/sequenced_task_checker.h"
namespace webrtc {
class SimulcastRateAllocator;
class VideoEncoderFactory;
// SimulcastEncoderAdapter implements simulcast support by creating multiple
// webrtc::VideoEncoder instances with the given VideoEncoderFactory.
// The object is created and destroyed on the worker thread, but all public
// interfaces should be called from the encoder task queue.
class SimulcastEncoderAdapter : public VP8Encoder {
public:
explicit SimulcastEncoderAdapter(VideoEncoderFactory* factory,
const SdpVideoFormat& format);
virtual ~SimulcastEncoderAdapter();
// Implements VideoEncoder.
int Release() override;
int InitEncode(const VideoCodec* inst,
int number_of_cores,
size_t max_payload_size) override;
int Encode(const VideoFrame& input_image,
const CodecSpecificInfo* codec_specific_info,
const std::vector<FrameType>* frame_types) override;
int RegisterEncodeCompleteCallback(EncodedImageCallback* callback) override;
int SetChannelParameters(uint32_t packet_loss, int64_t rtt) override;
int SetRateAllocation(const VideoBitrateAllocation& bitrate,
uint32_t new_framerate) override;
// Eventual handler for the contained encoders' EncodedImageCallbacks, but
// called from an internal helper that also knows the correct stream
// index.
EncodedImageCallback::Result OnEncodedImage(
size_t stream_idx,
const EncodedImage& encoded_image,
const CodecSpecificInfo* codec_specific_info,
const RTPFragmentationHeader* fragmentation);
VideoEncoder::ScalingSettings GetScalingSettings() const override;
bool SupportsNativeHandle() const override;
const char* ImplementationName() const override;
private:
struct StreamInfo {
StreamInfo(std::unique_ptr<VideoEncoder> encoder,
std::unique_ptr<EncodedImageCallback> callback,
uint16_t width,
uint16_t height,
bool send_stream)
: encoder(std::move(encoder)),
callback(std::move(callback)),
width(width),
height(height),
key_frame_request(false),
send_stream(send_stream) {}
std::unique_ptr<VideoEncoder> encoder;
std::unique_ptr<EncodedImageCallback> callback;
uint16_t width;
uint16_t height;
bool key_frame_request;
bool send_stream;
};
// Populate the codec settings for each simulcast stream.
static void PopulateStreamCodec(const webrtc::VideoCodec& inst,
int stream_index,
uint32_t start_bitrate_kbps,
bool highest_resolution_stream,
webrtc::VideoCodec* stream_codec);
bool Initialized() const;
void DestroyStoredEncoders();
volatile int inited_; // Accessed atomically.
VideoEncoderFactory* const factory_;
const SdpVideoFormat video_format_;
VideoCodec codec_;
std::vector<StreamInfo> streaminfos_;
EncodedImageCallback* encoded_complete_callback_;
std::string implementation_name_;
// Used for checking the single-threaded access of the encoder interface.
rtc::SequencedTaskChecker encoder_queue_;
// Store encoders in between calls to Release and InitEncode, so they don't
// have to be recreated. Remaining encoders are destroyed by the destructor.
std::stack<std::unique_ptr<VideoEncoder>> stored_encoders_;
};
} // namespace webrtc
#endif // MEDIA_ENGINE_SIMULCAST_ENCODER_ADAPTER_H_