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| 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 #ifndef WEBRTC_API_VIDEO_CODECS_VIDEO_ENCODER_FACTORY_H_ |
| 12 #define WEBRTC_API_VIDEO_CODECS_VIDEO_ENCODER_FACTORY_H_ |
| 13 |
| 14 #include <memory> |
| 15 #include <vector> |
| 16 |
| 17 namespace webrtc { |
| 18 |
| 19 class VideoEncoder; |
| 20 struct SdpVideoFormat; |
| 21 |
| 22 // A factory that creates VideoEncoders. |
| 23 // NOTE: This class is still under development and may change without notice. |
| 24 class VideoEncoderFactory { |
| 25 public: |
| 26 // TODO(magjed): Try to get rid of this struct. |
| 27 struct CodecInfo { |
| 28 // |is_hardware_accelerated| is true if the encoders created by this factory |
| 29 // of the given codec will use hardware support. |
| 30 bool is_hardware_accelerated; |
| 31 // |has_internal_source| is true if encoders created by this factory of the |
| 32 // given codec will use internal camera sources, meaning that they don't |
| 33 // require/expect frames to be delivered via webrtc::VideoEncoder::Encode. |
| 34 // This flag is used as the internal_source parameter to |
| 35 // webrtc::ViEExternalCodec::RegisterExternalSendCodec. |
| 36 bool has_internal_source; |
| 37 }; |
| 38 |
| 39 // Returns a list of supported video formats in order of preference, to use |
| 40 // for signaling etc. |
| 41 virtual std::vector<SdpVideoFormat> GetSupportedFormats() const = 0; |
| 42 |
| 43 // Returns information about how this format will be encoded. The specified |
| 44 // format must be one of the supported formats by this factory. |
| 45 // TODO(magjed): Try to get rid of this method. |
| 46 virtual CodecInfo QueryVideoEncoder(const SdpVideoFormat& format) const = 0; |
| 47 |
| 48 // Creates a VideoEncoder for the specified format. |
| 49 virtual std::unique_ptr<VideoEncoder> CreateVideoEncoder( |
| 50 const SdpVideoFormat& format) = 0; |
| 51 |
| 52 virtual ~VideoEncoderFactory() {} |
| 53 }; |
| 54 |
| 55 } // namespace webrtc |
| 56 |
| 57 #endif // WEBRTC_API_VIDEO_CODECS_VIDEO_ENCODER_FACTORY_H_ |
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