1 /*
2  *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  *
10  */
11 
12 #ifndef MEDIA_ENGINE_ENCODER_SIMULCAST_PROXY_H_
13 #define MEDIA_ENGINE_ENCODER_SIMULCAST_PROXY_H_
14 
15 #include <stddef.h>
16 #include <stdint.h>
17 
18 #include <memory>
19 #include <vector>
20 
21 #include "api/video/video_bitrate_allocation.h"
22 #include "api/video/video_frame.h"
23 #include "api/video_codecs/sdp_video_format.h"
24 #include "api/video_codecs/video_codec.h"
25 #include "api/video_codecs/video_encoder.h"
26 #include "api/video_codecs/video_encoder_factory.h"
27 #include "modules/video_coding/include/video_codec_interface.h"
28 #include "rtc_base/system/rtc_export.h"
29 
30 namespace webrtc {
31 
32 // This class provides fallback to SimulcastEncoderAdapter if default VP8Encoder
33 // doesn't support simulcast for provided settings.
34 class RTC_EXPORT EncoderSimulcastProxy : public VideoEncoder {
35  public:
36   EncoderSimulcastProxy(VideoEncoderFactory* factory,
37                         const SdpVideoFormat& format);
38   // Deprecated. Remove once all clients use constructor with both factory and
39   // SdpVideoFormat;
40   explicit EncoderSimulcastProxy(VideoEncoderFactory* factory);
41 
42   ~EncoderSimulcastProxy() override;
43 
44   // Implements VideoEncoder.
45   int Release() override;
46   void SetFecControllerOverride(
47       FecControllerOverride* fec_controller_override) override;
48   int InitEncode(const VideoCodec* codec_settings,
49                  const VideoEncoder::Settings& settings) override;
50   int Encode(const VideoFrame& input_image,
51              const std::vector<VideoFrameType>* frame_types) override;
52   int RegisterEncodeCompleteCallback(EncodedImageCallback* callback) override;
53   void SetRates(const RateControlParameters& parameters) override;
54   void OnPacketLossRateUpdate(float packet_loss_rate) override;
55   void OnRttUpdate(int64_t rtt_ms) override;
56   void OnLossNotification(const LossNotification& loss_notification) override;
57   EncoderInfo GetEncoderInfo() const override;
58 
59  private:
60   VideoEncoderFactory* const factory_;
61   SdpVideoFormat video_format_;
62   std::unique_ptr<VideoEncoder> encoder_;
63   EncodedImageCallback* callback_;
64 };
65 
66 }  // namespace webrtc
67 
68 #endif  // MEDIA_ENGINE_ENCODER_SIMULCAST_PROXY_H_
69