api/video_codecs/vp9_profile.h

/*
 *  Copyright (c) 2021 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_VP9_PROFILE_H_
#define API_VIDEO_CODECS_VP9_PROFILE_H_

#include <optional>
#include <string>

#include "api/rtp_parameters.h"
#include "rtc_base/system/rtc_export.h"

namespace webrtc {

// Profile information for VP9 video.
extern RTC_EXPORT const char kVP9FmtpProfileId[];

enum class VP9Profile {
  kProfile0,
  kProfile1,
  kProfile2,
  kProfile3,
};

// Helper functions to convert VP9Profile to std::string. Returns "0" by
// default.
RTC_EXPORT std::string VP9ProfileToString(VP9Profile profile);

// Helper functions to convert std::string to VP9Profile. Returns null if given
// an invalid profile string.
std::optional<VP9Profile> StringToVP9Profile(const std::string& str);

// Parse profile that is represented as a string of single digit contained in an
// SDP key-value map. A default profile(kProfile0) will be returned if the
// profile key is missing. Nothing will be returned if the key is present but
// the string is invalid.
RTC_EXPORT std::optional<VP9Profile> ParseSdpForVP9Profile(
    const CodecParameterMap& params);

// Returns true if the parameters have the same VP9 profile, or neither contains
// VP9 profile.
bool VP9IsSameProfile(const CodecParameterMap& params1,
                      const CodecParameterMap& params2);

}  // namespace webrtc

#endif  // API_VIDEO_CODECS_VP9_PROFILE_H_