[x264-devel] Use integer math for filler size calculation

[Anton Mitrofanov]

x264 | branch: master | Anton Mitrofanov <BugMaster at narod.ru> | Wed Apr  6 22:48:57 2011 +0400| [529bbefe6cb2dfcde967bff97528d70e14cea5c7] | committer: Jason Garrett-Glaser

Use integer math for filler size calculation

> http://git.videolan.org/gitweb.cgi/x264.git/?a=commit;h=529bbefe6cb2dfcde967bff97528d70e14cea5c7
---

 encoder/ratecontrol.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/encoder/ratecontrol.c b/encoder/ratecontrol.c
index 3abd198..ce9a93e 100644
--- a/encoder/ratecontrol.c
+++ b/encoder/ratecontrol.c
@@ -1828,7 +1828,8 @@ static int update_vbv( x264_t *h, int bits )
 
     if( h->sps->vui.hrd.b_cbr_hrd && rct->buffer_fill_final > buffer_size )
     {
-        filler = ceil( (rct->buffer_fill_final - buffer_size) / (8. * h->sps->vui.i_time_scale) );
+        int64_t scale = (int64_t)h->sps->vui.i_time_scale * 8;
+        filler = (rct->buffer_fill_final - buffer_size + scale - 1) / scale;
         bits = X264_MAX( (FILLER_OVERHEAD - h->param.b_annexb), filler ) * 8;
         rct->buffer_fill_final -= (uint64_t)bits * h->sps->vui.i_time_scale;
     }