From 428984b041092de3fb1bde07bf8d32383808a0e9 Mon Sep 17 00:00:00 2001 From: Mike Melanson Date: Wed, 23 Sep 2009 05:38:12 +0000 Subject: Another micro-optimization for unpack_vlcs(): Eliminate a possible branch and save around 45k-55k dezicycles per function run. Originally committed as revision 19974 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/vp3.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'libavcodec') diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index e2b17062dd..4d27a8a781 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -1070,10 +1070,9 @@ static int unpack_vlcs(Vp3DecodeContext *s, GetBitContext *gb, coeff = zero_run = 0; } else { bits_to_get = coeff_get_bits[token]; - if (!bits_to_get) - coeff = coeff_tables[token][0]; - else - coeff = coeff_tables[token][get_bits(gb, bits_to_get)]; + if (bits_to_get) + bits_to_get = get_bits(gb, bits_to_get); + coeff = coeff_tables[token][bits_to_get]; zero_run = zero_run_base[token]; if (zero_run_get_bits[token]) -- cgit v1.2.3