1 /* 2 * Copyright (c) 2018 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 #include "api/video_codecs/builtin_video_encoder_factory.h" 12 13 #include <memory> 14 #include <vector> 15 16 #include "absl/strings/match.h" 17 #include "api/video_codecs/sdp_video_format.h" 18 #include "api/video_codecs/video_encoder.h" 19 #include "media/base/codec.h" 20 #include "media/base/media_constants.h" 21 #include "media/engine/encoder_simulcast_proxy.h" 22 #include "media/engine/internal_encoder_factory.h" 23 #include "rtc_base/checks.h" 24 25 namespace webrtc { 26 27 namespace { 28 29 // This class wraps the internal factory and adds simulcast. 30 class BuiltinVideoEncoderFactory : public VideoEncoderFactory { 31 public: BuiltinVideoEncoderFactory()32 BuiltinVideoEncoderFactory() 33 : internal_encoder_factory_(new InternalEncoderFactory()) {} 34 CreateVideoEncoder(const SdpVideoFormat & format)35 std::unique_ptr<VideoEncoder> CreateVideoEncoder( 36 const SdpVideoFormat& format) override { 37 // Try creating internal encoder. 38 std::unique_ptr<VideoEncoder> internal_encoder; 39 if (format.IsCodecInList( 40 internal_encoder_factory_->GetSupportedFormats())) { 41 internal_encoder = std::make_unique<EncoderSimulcastProxy>( 42 internal_encoder_factory_.get(), format); 43 } 44 45 return internal_encoder; 46 } 47 GetSupportedFormats() const48 std::vector<SdpVideoFormat> GetSupportedFormats() const override { 49 return internal_encoder_factory_->GetSupportedFormats(); 50 } 51 52 private: 53 const std::unique_ptr<VideoEncoderFactory> internal_encoder_factory_; 54 }; 55 56 } // namespace 57 CreateBuiltinVideoEncoderFactory()58std::unique_ptr<VideoEncoderFactory> CreateBuiltinVideoEncoderFactory() { 59 return std::make_unique<BuiltinVideoEncoderFactory>(); 60 } 61 62 } // namespace webrtc 63