swscale/utils: fill xyz tables only when they will be used
authorMichael Niedermayer <michaelni@gmx.at>
Sat, 7 Dec 2013 01:04:31 +0000 (02:04 +0100)
committerMichael Niedermayer <michaelni@gmx.at>
Tue, 7 Jan 2014 02:05:30 +0000 (03:05 +0100)
makes the first call to sws_getContext() 1ms faster

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 4d18060e56aac9d7248854ba75d5fc19f5cd3db8)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
libswscale/utils.c

index 6c5fa56..3cc2c9d 100644 (file)
@@ -975,8 +975,6 @@ int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4],
     c->srcRange   = srcRange;
     c->dstRange   = dstRange;
 
-    fill_xyztables(c);
-
     if ((isYUV(c->dstFormat) || isGray(c->dstFormat)) && (isYUV(c->srcFormat) || isGray(c->srcFormat)))
         return -1;
 
@@ -1067,6 +1065,8 @@ static void handle_formats(SwsContext *c)
     c->dst0Alpha |= handle_0alpha(&c->dstFormat);
     c->srcXYZ    |= handle_xyz(&c->srcFormat);
     c->dstXYZ    |= handle_xyz(&c->dstFormat);
+    if (c->srcXYZ || c->dstXYZ)
+        fill_xyztables(c);
 }
 
 SwsContext *sws_alloc_context(void)