[FFmpeg-cvslog] r14701 - trunk/libavcodec/mdct.c

[lorenm]

Author: lorenm
Date: Tue Aug 12 02:34:08 2008
New Revision: 14701

Log:
remove a float->double->float conversion.
1.8x faster imdct_c with fpmath=sse, no change with x87


Modified:
   trunk/libavcodec/mdct.c

Modified: trunk/libavcodec/mdct.c
==============================================================================
--- trunk/libavcodec/mdct.c	(original)
+++ trunk/libavcodec/mdct.c	Tue Aug 12 02:34:08 2008
@@ -92,10 +92,10 @@ int ff_mdct_init(MDCTContext *s, int nbi
 /* complex multiplication: p = a * b */
 #define CMUL(pre, pim, are, aim, bre, bim) \
 {\
-    double _are = (are);\
-    double _aim = (aim);\
-    double _bre = (bre);\
-    double _bim = (bim);\
+    FFTSample _are = (are);\
+    FFTSample _aim = (aim);\
+    FFTSample _bre = (bre);\
+    FFTSample _bim = (bim);\
     (pre) = _are * _bre - _aim * _bim;\
     (pim) = _are * _bim + _aim * _bre;\
 }