ref: 78df71221656b0a0d37bff6c16efd743347fa30d
parent: 6eaca27df21d2bd8da1c063c484b5f5c28621d3a
author: Adrian Grange <agrange@google.com>
date: Tue Mar 10 05:14:54 EDT 2015
Fix vp9_compute_qdelta_by_rate loop behavior The return value from vp9_compute_qdelta_by_rate, which is a delta value for the quantizer, could never be 0 if (qindex == rc->worst_quality). This occurs because target_index was setup unconditionally in the loop and yet the loop counter stopped at (rc->worst_quality - 1). Change-Id: I6b59cd9b5811ff33357e71cd7d814c5e53d291f2
--- a/vp9/encoder/vp9_ratectrl.c
+++ b/vp9/encoder/vp9_ratectrl.c
@@ -1595,11 +1595,12 @@
// Convert the q target to an index
for (i = rc->best_quality; i < rc->worst_quality; ++i) {- target_index = i;
- if (vp9_rc_bits_per_mb(frame_type, i, 1.0, bit_depth) <= target_bits_per_mb)
+ if (vp9_rc_bits_per_mb(frame_type, i, 1.0, bit_depth) <=
+ target_bits_per_mb) {+ target_index = i;
break;
+ }
}
-
return target_index - qindex;
}
--
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