av1_profile.h - mozsearch

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/*

 *  Copyright (c) 2022 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_AV1_PROFILE_H_

#define API_VIDEO_CODECS_AV1_PROFILE_H_

#include "absl/strings/string_view.h"

#include "absl/types/optional.h"

#include "api/rtp_parameters.h"

#include "rtc_base/system/rtc_export.h"

namespace webrtc {

// Profiles can be found at:

// https://aomedia.org/av1/specification/annex-a/#profiles

// The enum values match the number specified in the SDP.

enum class AV1Profile {

  kProfile0 = 0,

  kProfile1 = 1,

  kProfile2 = 2,

};

// Helper function which converts an AV1Profile to std::string. Returns "0" if

// an unknown value is passed in.

RTC_EXPORT absl::string_view AV1ProfileToString(AV1Profile profile);

// Helper function which converts a std::string to AV1Profile. Returns null if

// |profile| is not a valid profile string.

absl::optional<AV1Profile> StringToAV1Profile(absl::string_view profile);

// Parses an SDP key-value map of format parameters to retrive an AV1 profile.

// Returns an AV1Profile if one has been specified, `kProfile0` if no profile is

// specified and an empty value if the profile key is present but contains an

// invalid value.

RTC_EXPORT absl::optional<AV1Profile> ParseSdpForAV1Profile(

    const CodecParameterMap& params);

// Returns true if the parameters have the same AV1 profile or neither contains

// an AV1 profile, otherwise false.

bool AV1IsSameProfile(const CodecParameterMap& params1,

                      const CodecParameterMap& params2);

}  // namespace webrtc

#endif  // API_VIDEO_CODECS_AV1_PROFILE_H_