/// <summary>
/// Initializes a new instance of the <see cref="HeifContext"/> class, with the specified file to read from.
/// </summary>
/// <param name="path">The file to read from.</param>
/// <exception cref="ArgumentNullException"><paramref name="path"/> is null.</exception>
/// <exception cref="ArgumentException">
/// <paramref name="path"/> is empty, contains only whitespace or contains invalid characters.
/// </exception>
/// <exception cref="FileNotFoundException">The file specified by <paramref name="path"/> does not exist.</exception>
/// <exception cref="HeifException">
/// Unable to create the native HeifContext.
///
/// -or-
///
/// The LibHeif version is not supported.
///
/// -or-
///
/// A LibHeif error occurred.
/// </exception>
/// <exception cref="IOException">An I/O error occurred.</exception>
/// <exception cref="System.Security.SecurityException">The caller does not have the required permission.</exception>
/// <exception cref="UnauthorizedAccessException">
/// The access requested is not permitted by the operating system for the specified path.
/// </exception>
public HeifContext(string path)
{
Validate.IsNotNull(path, nameof(path));
LibHeifVersion.ThrowIfNotSupported();
this.context = CreateNativeContext();
try
{
this.readerStreamIO = HeifStreamFactory.CreateFromFile(path, FileMode.Open, FileAccess.Read, FileShare.Read);
InitializeContextFromReader();
}
catch
{
this.context.Dispose();
this.readerStreamIO?.Dispose();
throw;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="HeifContext"/> class, with the specified byte array to read from.
/// </summary>
/// <param name="bytes">A byte array that contains the HEIF image.</param>
/// <exception cref="ArgumentNullException"><paramref name="bytes"/> is null.</exception>
/// <exception cref="ArgumentException"><paramref name="bytes"/> is an empty array.</exception>
/// <exception cref="HeifException">
/// Unable to create the native HeifContext.
///
/// -or-
///
/// The LibHeif version is not supported.
///
/// -or-
///
/// A LibHeif error occurred.
/// </exception>
public HeifContext(byte[] bytes)
{
Validate.IsNotNullOrEmptyArray(bytes, nameof(bytes));
LibHeifVersion.ThrowIfNotSupported();
this.context = CreateNativeContext();
try
{
this.readerStreamIO = HeifStreamFactory.CreateFromMemory(bytes);
InitializeContextFromReader();
}
catch
{
this.context.Dispose();
this.readerStreamIO?.Dispose();
throw;
}
}
