shithub: libvpx

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Clamp rate correction factor after scaling it

Added clamp on the rate correction factor after
it has been scaled.

Change-Id: I5d4b46a101987b43c5bcfd7e0bd1b7b4d53640a4

--- a/vp9/encoder/vp9_ratectrl.c

+++ b/vp9/encoder/vp9_ratectrl.c

@@ -377,7 +377,7 @@

       rcf = rc->rate_correction_factors[INTER_NORMAL];

   }

   rcf *= rcf_mult[rc->frame_size_selector];

-  return rcf > MAX_BPB_FACTOR ? MAX_BPB_FACTOR : rcf;

+  return fclamp(rcf, MIN_BPB_FACTOR, MAX_BPB_FACTOR);

 }

 static void set_rate_correction_factor(VP9_COMP *cpi, double factor) {

@@ -385,6 +385,8 @@

   // Normalize RCF to account for the size-dependent scaling factor.

   factor /= rcf_mult[cpi->rc.frame_size_selector];

+

+  factor = fclamp(factor, MIN_BPB_FACTOR, MAX_BPB_FACTOR);

   if (cpi->common.frame_type == KEY_FRAME) {

     rc->rate_correction_factors[KF_STD] = factor;