Merge remote-tracking branch 'upstream/master' into mbaff-interlace-detection

1 files changed, 45 insertions, 0 deletions

diff --git a/MediaBrowser.Model/IO/AsyncFile.cs b/MediaBrowser.Model/IO/AsyncFile.cs
new file mode 100644
index 000000000..3c8007d1c
--- /dev/null
+++ b/MediaBrowser.Model/IO/AsyncFile.cs
@@ -0,0 +1,45 @@
+using System.IO;
+
+namespace MediaBrowser.Model.IO
+{
+    /// <summary>
+    /// Helper class to create async <see cref="FileStream" />s.
+    /// </summary>
+    public static class AsyncFile
+    {
+        /// <summary>
+        /// Gets the default <see cref="FileStreamOptions"/> for reading files async.
+        /// </summary>
+        public static FileStreamOptions ReadOptions => new FileStreamOptions()
+        {
+            Options = FileOptions.Asynchronous
+        };
+
+        /// <summary>
+        /// Gets the default <see cref="FileStreamOptions"/> for writing files async.
+        /// </summary>
+        public static FileStreamOptions WriteOptions => new FileStreamOptions()
+        {
+            Mode = FileMode.OpenOrCreate,
+            Access = FileAccess.Write,
+            Share = FileShare.None,
+            Options = FileOptions.Asynchronous
+        };
+
+        /// <summary>
+        /// Opens an existing file for reading.
+        /// </summary>
+        /// <param name="path">The file to be opened for reading.</param>
+        /// <returns>A read-only <see cref="FileStream" /> on the specified path.</returns>
+        public static FileStream OpenRead(string path)
+            => new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read, IODefaults.FileStreamBufferSize, FileOptions.Asynchronous);
+
+        /// <summary>
+        /// Opens an existing file for writing.
+        /// </summary>
+        /// <param name="path">The file to be opened for writing.</param>
+        /// <returns>An unshared <see cref="FileStream" /> object on the specified path with Write access.</returns>
+        public static FileStream OpenWrite(string path)
+            => new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write, FileShare.None, IODefaults.FileStreamBufferSize, FileOptions.Asynchronous);
+    }
+}