Changeset 77162 in webkit

Timestamp:

Jan 31, 2011 2:56:37 PM (13 years ago)

Author:

crogers@google.com

Message:

2011-01-31 Chris Rogers <​crogers@google.com>

Reviewed by Jeremy Orlow.

Improve audio latency on Mac OS X for chromium port
​https://bugs.webkit.org/show_bug.cgi?id=53452

• src/AudioDestinationChromium.cpp:

Location:

trunk/Source/WebKit/chromium

Files:

• ChangeLog (modified) (1 diff)
• src/AudioDestinationChromium.cpp (modified) (1 diff)

trunk/Source/WebKit/chromium/ChangeLog

@@ +1 @@
+2011-01-31  Chris Rogers  <crogers@google.com>
+
+        Reviewed by Jeremy Orlow.
+
+        Improve audio latency on Mac OS X for chromium port
+        https://bugs.webkit.org/show_bug.cgi?id=53452
+
+        * src/AudioDestinationChromium.cpp:
+
 2011-01-29  Patrick Gansterer  <paroga@webkit.org>
 

trunk/Source/WebKit/chromium/src/AudioDestinationChromium.cpp

@@ -42 +42 @@
 
 // Buffer size that the Chromium audio system will call us back with.
+#if OS(DARWIN)
+// For Mac OS X the chromium audio backend uses a low-latency CoreAudio API, so a low buffer size is possible.
+const unsigned callbackBufferSize = 128;
+#else
 // This value may need to be tuned based on the OS.
 // FIXME: It may be possible to reduce this value once real-time threads
 // and other Chromium audio improvements are made.
 const unsigned callbackBufferSize = 2048;
+#endif
 
 // Buffer size at which the web audio engine will render.