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Diffstat (limited to 'third_party/libwebrtc/api/video_codecs/sdp_video_format.h')
-rw-r--r-- | third_party/libwebrtc/api/video_codecs/sdp_video_format.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/video_codecs/sdp_video_format.h b/third_party/libwebrtc/api/video_codecs/sdp_video_format.h new file mode 100644 index 0000000000..faaa66c241 --- /dev/null +++ b/third_party/libwebrtc/api/video_codecs/sdp_video_format.h @@ -0,0 +1,75 @@ +/* + * 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_SDP_VIDEO_FORMAT_H_ +#define API_VIDEO_CODECS_SDP_VIDEO_FORMAT_H_ + +#include <map> +#include <string> + +#include "absl/container/inlined_vector.h" +#include "absl/types/optional.h" +#include "api/array_view.h" +#include "api/video_codecs/scalability_mode.h" +#include "rtc_base/system/rtc_export.h" + +namespace webrtc { + +// SDP specification for a single video codec. +// NOTE: This class is still under development and may change without notice. +struct RTC_EXPORT SdpVideoFormat { + using Parameters = std::map<std::string, std::string>; + + explicit SdpVideoFormat(const std::string& name); + SdpVideoFormat(const std::string& name, const Parameters& parameters); + SdpVideoFormat( + const std::string& name, + const Parameters& parameters, + const absl::InlinedVector<ScalabilityMode, kScalabilityModeCount>& + scalability_modes); + SdpVideoFormat(const SdpVideoFormat&); + SdpVideoFormat(SdpVideoFormat&&); + SdpVideoFormat& operator=(const SdpVideoFormat&); + SdpVideoFormat& operator=(SdpVideoFormat&&); + + ~SdpVideoFormat(); + + // Returns true if the SdpVideoFormats have the same names as well as codec + // specific parameters. Please note that two SdpVideoFormats can represent the + // same codec even though not all parameters are the same. + bool IsSameCodec(const SdpVideoFormat& other) const; + bool IsCodecInList( + rtc::ArrayView<const webrtc::SdpVideoFormat> formats) const; + + std::string ToString() const; + + friend RTC_EXPORT bool operator==(const SdpVideoFormat& a, + const SdpVideoFormat& b); + friend RTC_EXPORT bool operator!=(const SdpVideoFormat& a, + const SdpVideoFormat& b) { + return !(a == b); + } + + std::string name; + Parameters parameters; + absl::InlinedVector<ScalabilityMode, kScalabilityModeCount> scalability_modes; +}; + +// For not so good reasons sometimes additional parameters are added to an +// SdpVideoFormat, which makes instances that should compare equal to not match +// anymore. Until we stop misusing SdpVideoFormats provide this convenience +// function to perform fuzzy matching. +absl::optional<SdpVideoFormat> FuzzyMatchSdpVideoFormat( + rtc::ArrayView<const SdpVideoFormat> supported_formats, + const SdpVideoFormat& format); + +} // namespace webrtc + +#endif // API_VIDEO_CODECS_SDP_VIDEO_FORMAT_H_ |