avcodec/utvideodec: hardcode vlc bits

2.5% faster vlc decoding
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/utvideodec.c

@@ -73,8 +73,8 @@ static int build_huff10(const uint8_t *src, VLC *vlc, int *fsym)
         syms[i]  = he[i].sym;
         code += 0x80000000u >> (he[i].len - 1);
     }
-
-    return ff_init_vlc_sparse(vlc, FFMIN(he[last].len, 11), last + 1,
+#define VLC_BITS 11
+    return ff_init_vlc_sparse(vlc, VLC_BITS, last + 1,
                               bits,  sizeof(*bits),  sizeof(*bits),
                               codes, sizeof(*codes), sizeof(*codes),
                               syms,  sizeof(*syms),  sizeof(*syms), 0);
@@ -117,7 +117,7 @@ static int build_huff(const uint8_t *src, VLC *vlc, int *fsym)
         code += 0x80000000u >> (he[i].len - 1);
     }
 
-    return ff_init_vlc_sparse(vlc, FFMIN(he[last].len, 11), last + 1,
+    return ff_init_vlc_sparse(vlc, VLC_BITS, last + 1,
                               bits,  sizeof(*bits),  sizeof(*bits),
                               codes, sizeof(*codes), sizeof(*codes),
                               syms,  sizeof(*syms),  sizeof(*syms), 0);
@@ -196,7 +196,7 @@ static int decode_plane10(UtvideoContext *c, int plane_no,
         prev = 0x200;
         for (j = sstart; j < send; j++) {
             for (i = 0; i < width * step; i += step) {
-                pix = get_vlc2(&gb, vlc.table, vlc.bits, 3);
+                pix = get_vlc2(&gb, vlc.table, VLC_BITS, 3);
                 if (pix < 0) {
                     av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n");
                     goto fail;
@@ -302,7 +302,7 @@ static int decode_plane(UtvideoContext *c, int plane_no,
         prev = 0x80;
         for (j = sstart; j < send; j++) {
             for (i = 0; i < width * step; i += step) {
-                pix = get_vlc2(&gb, vlc.table, vlc.bits, 3);
+                pix = get_vlc2(&gb, vlc.table, VLC_BITS, 3);
                 if (pix < 0) {
                     av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n");
                     goto fail;