/// <summary>
/// Gets the metadata with the specified key.
/// </summary>
/// <returns>A string that represents the value of the specified key.</returns>
/// <param name="key">The key to query.</param>
/// <remarks>
/// The <see cref="Multimedia.Player"/> that owns this instance must be in the <see cref="PlayerState.Ready"/>,
/// <see cref="PlayerState.Playing"/>, or <see cref="PlayerState.Paused"/> state.</remarks>
/// <exception cref="ObjectDisposedException">
/// The <see cref="Multimedia.Player"/> that this instance belongs to has been disposed of.
/// </exception>
/// <exception cref="InvalidOperationException">
/// The <see cref="Multimedia.Player"/> that this instance belongs to is not in the valid state.
/// </exception>
/// <since_tizen> 3 </since_tizen>
public string GetMetadata(StreamMetadataKey key)
{
Player.ValidatePlayerState(PlayerState.Ready, PlayerState.Playing, PlayerState.Paused);
ValidationUtil.ValidateEnum(typeof(StreamMetadataKey), key);
IntPtr ptr = IntPtr.Zero;
try
{
NativePlayer.GetContentInfo(Player.Handle, key, out ptr).
ThrowIfFailed($"Failed to get the meta data with the key '{ key }'");
return(Marshal.PtrToStringAnsi(ptr));
}
finally
{
LibcSupport.Free(ptr);
}
}