Low-latency AudioInputStream implementation based on WASAPI for Windows.

base/threading/platform_thread_win.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/threading/platform_thread.h"
 
 #include "base/debug/alias.h"
 #include "base/logging.h"
 #include "base/threading/thread_local.h"
 #include "base/threading/thread_restrictions.h"
@@ skipping 139 matching lines @@
 
   // Wait for the thread to exit.  It should already have terminated but make
   // sure this assumption is valid.
   DWORD result = WaitForSingleObject(thread_handle, INFINITE);
   DCHECK_EQ(WAIT_OBJECT_0, result);
 
   CloseHandle(thread_handle);
 }
 
 // static
-void PlatformThread::SetThreadPriority(PlatformThreadHandle, ThreadPriority) {
-  // TODO(crogers): implement
-  NOTIMPLEMENTED();
+void PlatformThread::SetThreadPriority(PlatformThreadHandle handle,
+                                       ThreadPriority priority) {
+  switch (priority) {
+    case kThreadPriority_Normal:
+      ::SetThreadPriority(handle, THREAD_PRIORITY_NORMAL);
+      break;
+    case kThreadPriority_RealtimeAudio:

[willchan no longer on Chromium, 2011/10/25 20:26:27]

I'm disappointed that kThreadPriority_RealtimeAudio snuck in here. This is
really violating layering boundaries. PlatformThread should provide a audio
agnostic API for controlling priority. I see Darin made the same comment
previously.

You don't have to fix it here, but I just wanted to point out that I too dislike
this.

+      ::SetThreadPriority(handle, THREAD_PRIORITY_TIME_CRITICAL);
+      break;
+    default:
+      NOTIMPLEMENTED();
+      break;
+  }
 }
 
 }  // namespace base