1 /* 2 * Copyright (c) 2022 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 API_VIDEO_CODECS_AV1_PROFILE_H_ 12 #define API_VIDEO_CODECS_AV1_PROFILE_H_ 13 14 #include <string> 15 16 #include "absl/strings/string_view.h" 17 #include "absl/types/optional.h" 18 #include "api/video_codecs/sdp_video_format.h" 19 #include "rtc_base/system/rtc_export.h" 20 21 namespace webrtc { 22 23 // Profile information for AV1 video. 24 extern RTC_EXPORT const char kAV1FmtpProfile[]; 25 26 // Profiles can be found at: 27 // https://aomedia.org/av1/specification/annex-a/#profiles 28 // The enum values match the number specified in the SDP. 29 enum class AV1Profile { 30 kProfile0 = 0, 31 kProfile1 = 1, 32 kProfile2 = 2, 33 }; 34 35 // Helper function which converts an AV1Profile to std::string. Returns "0" if 36 // an unknown value is passed in. 37 RTC_EXPORT absl::string_view AV1ProfileToString(AV1Profile profile); 38 39 // Helper function which converts a std::string to AV1Profile. Returns null if 40 // |profile| is not a valid profile string. 41 absl::optional<AV1Profile> StringToAV1Profile(absl::string_view profile); 42 43 // Parses an SDP key-value map of format parameters to retrive an AV1 profile. 44 // Returns an AV1Profile if one has been specified, `kProfile0` if no profile is 45 // specified and an empty value if the profile key is present but contains an 46 // invalid value. 47 RTC_EXPORT absl::optional<AV1Profile> ParseSdpForAV1Profile( 48 const SdpVideoFormat::Parameters& params); 49 50 // Returns true if the parameters have the same AV1 profile or neither contains 51 // an AV1 profile, otherwise false. 52 bool AV1IsSameProfile(const SdpVideoFormat::Parameters& params1, 53 const SdpVideoFormat::Parameters& params2); 54 55 } // namespace webrtc 56 57 #endif // API_VIDEO_CODECS_AV1_PROFILE_H_ 58