From 762b56daa33c9dea6d256692827c0186416cd8c1 Mon Sep 17 00:00:00 2001
From: Luo Jinghua <sunmoon1997@gmail.com>
Date: Thu, 16 Apr 2009 15:07:00 +0800
Subject: winmm: shrink audio buffer count to 4.

This decrease audio output latency a lot.
---
 src/device.cpp    | 2 +-
 src/device_mm.cpp | 2 +-
 src/device_mm.h   | 6 +++---
 3 files changed, 5 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/device.cpp b/src/device.cpp
index 76af8f0..fd0d160 100644
--- a/src/device.cpp
+++ b/src/device.cpp
@@ -234,7 +234,7 @@ namespace audiere {
         TRY_GROUP("winmm");
         TRY_GROUP("alsa");
         TRY_GROUP("oss");
-	TRY_GROUP("coreaudio");
+        TRY_GROUP("coreaudio");
         return 0;
       }
 
diff --git a/src/device_mm.cpp b/src/device_mm.cpp
index e48a126..97c683c 100644
--- a/src/device_mm.cpp
+++ b/src/device_mm.cpp
@@ -107,7 +107,7 @@ namespace audiere {
         }
       }
     }
-    Sleep(10);
+    Sleep(2);
   }
 
 
diff --git a/src/device_mm.h b/src/device_mm.h
index 2dfa228..ae4f73e 100644
--- a/src/device_mm.h
+++ b/src/device_mm.h
@@ -26,10 +26,10 @@ namespace audiere {
     const char* ADR_CALL getName();
 
   private:
-    // 16 buffers of 1000 frames is 4000 frames at 44100 Hz is about
-    // 364 milliseconds of audio
+    // 4 buffers of 1000 frames is 4000 frames at 44100 Hz is about
+    // 91 milliseconds of audio
     enum {
-      BUFFER_COUNT  = 16,
+      BUFFER_COUNT  = 4,
       BUFFER_LENGTH = 1000 * 4, // 1000 samples, 4000 bytes
     };
 
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