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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /third_party/libwebrtc/api/video_codecs/video_decoder_factory.h | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/api/video_codecs/video_decoder_factory.h')
-rw-r--r-- | third_party/libwebrtc/api/video_codecs/video_decoder_factory.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/video_codecs/video_decoder_factory.h b/third_party/libwebrtc/api/video_codecs/video_decoder_factory.h new file mode 100644 index 0000000000..7e1d2ee883 --- /dev/null +++ b/third_party/libwebrtc/api/video_codecs/video_decoder_factory.h @@ -0,0 +1,69 @@ +/* + * Copyright (c) 2017 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 API_VIDEO_CODECS_VIDEO_DECODER_FACTORY_H_ +#define API_VIDEO_CODECS_VIDEO_DECODER_FACTORY_H_ + +#include <memory> +#include <string> +#include <vector> + +#include "absl/types/optional.h" +#include "api/video_codecs/sdp_video_format.h" +#include "rtc_base/system/rtc_export.h" + +namespace webrtc { + +class VideoDecoder; + +// A factory that creates VideoDecoders. +// NOTE: This class is still under development and may change without notice. +class RTC_EXPORT VideoDecoderFactory { + public: + struct CodecSupport { + bool is_supported = false; + bool is_power_efficient = false; + }; + + // Returns a list of supported video formats in order of preference, to use + // for signaling etc. + virtual std::vector<SdpVideoFormat> GetSupportedFormats() const = 0; + + // Query whether the specifed format is supported or not and if it will be + // power efficient, which is currently interpreted as if there is support for + // hardware acceleration. + // The parameter `reference_scaling` is used to query support for prediction + // across spatial layers. An example where support for reference scaling is + // needed is if the video stream is produced with a scalability mode that has + // a dependency between the spatial layers. See + // https://w3c.github.io/webrtc-svc/#scalabilitymodes* for a specification of + // different scalabilty modes. NOTE: QueryCodecSupport is currently an + // experimental feature that is subject to change without notice. + virtual CodecSupport QueryCodecSupport(const SdpVideoFormat& format, + bool reference_scaling) const { + // Default implementation, query for supported formats and check if the + // specified format is supported. Returns false if `reference_scaling` is + // true. + CodecSupport codec_support; + codec_support.is_supported = + !reference_scaling && format.IsCodecInList(GetSupportedFormats()); + return codec_support; + } + + // Creates a VideoDecoder for the specified format. + virtual std::unique_ptr<VideoDecoder> CreateVideoDecoder( + const SdpVideoFormat& format) = 0; + + virtual ~VideoDecoderFactory() {} +}; + +} // namespace webrtc + +#endif // API_VIDEO_CODECS_VIDEO_DECODER_FACTORY_H_ |