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Diffstat (limited to 'third_party/libwebrtc/api/video_codecs/builtin_video_encoder_factory.cc')
-rw-r--r-- | third_party/libwebrtc/api/video_codecs/builtin_video_encoder_factory.cc | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/video_codecs/builtin_video_encoder_factory.cc b/third_party/libwebrtc/api/video_codecs/builtin_video_encoder_factory.cc new file mode 100644 index 0000000000..573eb47bf9 --- /dev/null +++ b/third_party/libwebrtc/api/video_codecs/builtin_video_encoder_factory.cc @@ -0,0 +1,73 @@ +/* + * Copyright (c) 2018 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. + */ + +#include "api/video_codecs/builtin_video_encoder_factory.h" + +#include <memory> +#include <string> +#include <vector> + +#include "absl/strings/match.h" +#include "absl/types/optional.h" +#include "api/video_codecs/sdp_video_format.h" +#include "api/video_codecs/video_encoder.h" +#include "media/base/codec.h" +#include "media/base/media_constants.h" +#include "media/engine/internal_encoder_factory.h" +#include "media/engine/simulcast_encoder_adapter.h" +#include "rtc_base/checks.h" + +namespace webrtc { + +namespace { + +// This class wraps the internal factory and adds simulcast. +class BuiltinVideoEncoderFactory : public VideoEncoderFactory { + public: + BuiltinVideoEncoderFactory() + : internal_encoder_factory_(new InternalEncoderFactory()) {} + + std::unique_ptr<VideoEncoder> CreateVideoEncoder( + const SdpVideoFormat& format) override { + // Try creating an InternalEncoderFactory-backed SimulcastEncoderAdapter. + // The adapter has a passthrough mode for the case that simulcast is not + // used, so all responsibility can be delegated to it. + std::unique_ptr<VideoEncoder> encoder; + if (format.IsCodecInList( + internal_encoder_factory_->GetSupportedFormats())) { + encoder = std::make_unique<SimulcastEncoderAdapter>( + internal_encoder_factory_.get(), format); + } + + return encoder; + } + + std::vector<SdpVideoFormat> GetSupportedFormats() const override { + return internal_encoder_factory_->GetSupportedFormats(); + } + + CodecSupport QueryCodecSupport( + const SdpVideoFormat& format, + absl::optional<std::string> scalability_mode) const override { + return internal_encoder_factory_->QueryCodecSupport(format, + scalability_mode); + } + + private: + const std::unique_ptr<VideoEncoderFactory> internal_encoder_factory_; +}; + +} // namespace + +std::unique_ptr<VideoEncoderFactory> CreateBuiltinVideoEncoderFactory() { + return std::make_unique<BuiltinVideoEncoderFactory>(); +} + +} // namespace webrtc |