profileLevelIdToString static method

String? profileLevelIdToString(ProfileLevelId profile_level_id)

Returns canonical string representation as three hex bytes of the profile level id, or returns nothing for invalid profile level ids. @param {ProfileLevelId} profile_level_id @returns {String}

Implementation

static String? profileLevelIdToString(ProfileLevelId profile_level_id) {
  // Handle special case level == 1b.
  if (profile_level_id.level == Level1_b) {
    switch (profile_level_id.profile) {
      case ProfileConstrainedBaseline: return '42f00b';
      case ProfileBaseline: return '42100b';
      case ProfileMain: return '4d100b';
      // level 1_b is not allowed for other profiles.
      default: {
        print('profileLevelidToString() | Level 1_b not is allowed for profile:${profile_level_id.profile}');

        return null;
      }
    }
  }

  String profile_idc_iop_string;

  switch(profile_level_id.profile) {
    case ProfileConstrainedBaseline: {
      profile_idc_iop_string = '42e0';
      break;
    }
    case ProfileBaseline: {
      profile_idc_iop_string = '4200';
      break;
    }
    case ProfileMain: {
      profile_idc_iop_string = '4d00';
      break;
    }
    case ProfileConstrainedHigh: {
      profile_idc_iop_string = '640c';
      break;
    }
    case ProfileHigh: {
      profile_idc_iop_string = '6400';
      break;
    }
    default: {
      print('profileLevelIdToString() | unrecognized profile:${profile_level_id.profile}');

      return null;
    }
  }

  String levelStr = profile_level_id.level.toRadixString(16);

  if (levelStr.length == 1) {
    levelStr = '0$levelStr';
  }

  return '$profile_idc_iop_string$levelStr';
}