The minimum weight value is 32 so this test can be skipped for the 10-bit case. Overall speedup 3-4%.
Signed-off-by: Mans Rullgard <m...@mansr.com> --- libavcodec/dnxhddec.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/libavcodec/dnxhddec.c b/libavcodec/dnxhddec.c index 426be2e..63ccd08 100644 --- a/libavcodec/dnxhddec.c +++ b/libavcodec/dnxhddec.c @@ -239,7 +239,7 @@ static av_always_inline void dnxhd_decode_dct_block(DNXHDContext *ctx, //av_log(ctx->avctx, AV_LOG_DEBUG, "j %d\n", j); //av_log(ctx->avctx, AV_LOG_DEBUG, "level %d, weight %d\n", level, weight_matrix[i]); level = (2*level+1) * qscale * weight_matrix[i]; - if (weight_matrix[i] != level_bias) + if (level_bias < 32 || weight_matrix[i] != level_bias) level += level_bias; level >>= level_shift; -- 1.7.6 _______________________________________________ libav-devel mailing list libav-devel@libav.org https://lists.libav.org/mailman/listinfo/libav-devel