[FFmpeg-cvslog] dnxhdenc: optimize whats left of dnxhd_switch_matrix()

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sun Sep 25 13:06:04 2011 +0200| [b8bad984ef45ddce8b356bc1bf15066f4134f10d] | committer: Michael Niedermayer

dnxhdenc: optimize whats left of dnxhd_switch_matrix()

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b8bad984ef45ddce8b356bc1bf15066f4134f10d
---

 libavcodec/dnxhdenc.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/libavcodec/dnxhdenc.c b/libavcodec/dnxhdenc.c
index 1461222..008742e 100644
--- a/libavcodec/dnxhdenc.c
+++ b/libavcodec/dnxhdenc.c
@@ -502,11 +502,8 @@ static av_always_inline void dnxhd_get_blocks(DNXHDEncContext *ctx, int mb_x, in
 
 static av_always_inline int dnxhd_switch_matrix(DNXHDEncContext *ctx, int i)
 {
-    if (i&2) {
-        return 1 + (i&1);
-    } else {
-        return 0;
-    }
+    const static uint8_t component[8]={0,0,1,2,0,0,1,2,0,0,1,2,0,0,1,2};
+    return component[i];
 }
 
 static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)