[babl] sse2-float: use same TRC for "leftover" samples

[N/A <ell src gnome org>]

commit e721f297d1df25664aa6b28b83c085607fe6c1b0
Author: Ell <ell_se yahoo com>
Date:   Sat Jan 13 04:02:24 2018 -0500

    sse2-float: use same TRC for "leftover" samples
    
    The SSE2 versions of the gamma <-> linear TRC functions can produce
    slightly different results than the scalar ones.  Consequently,
    last commit didn't resolve all discrepancies between the main and
    leftover samples (and didn't address the gamma -> linear
    direction).
    
    Use the same SSE2 TRC functions for converting the leftover
    samples, rather than the scalar functions, to fix that.

 extensions/sse2-float.c |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)
---
diff --git a/extensions/sse2-float.c b/extensions/sse2-float.c
index bb9f72e..800ac97 100644
--- a/extensions/sse2-float.c
+++ b/extensions/sse2-float.c
@@ -432,7 +432,8 @@ conv_yaF_linear_yaF_gamma (const Babl *conversion,const float *src, float *dst,
 
   while (samples--)
     {
-      *dst++ = babl_linear_to_gamma_2_2f (*src++);
+      float y = *src++;
+      *dst++ = linear_to_gamma_2_2_sse2 (splat4f (y))[0];
       *dst++ = *src++;
     }
 }
@@ -466,7 +467,8 @@ conv_yaF_gamma_yaF_linear (const Babl *conversion,const float *src, float *dst,
 
   while (samples--)
     {
-      *dst++ = babl_gamma_2_2_to_linear (*src++);
+      float y = *src++;
+      *dst++ = gamma_2_2_to_linear_sse2 (splat4f (y))[0];
       *dst++ = *src++;
     }
 }
@@ -503,7 +505,8 @@ conv_yF_linear_yF_gamma (const Babl *conversion,const float *src, float *dst, lo
 
   while (samples--)
     {
-      *dst++ = babl_linear_to_gamma_2_2f (*src++);
+      float y = *src++;
+      *dst++ = linear_to_gamma_2_2_sse2 (splat4f (y))[0];
     }
 }
 
@@ -539,7 +542,8 @@ conv_yF_gamma_yF_linear (const Babl *conversion,const float *src, float *dst, lo
 
   while (samples--)
     {
-      *dst++ = babl_gamma_2_2_to_linear (*src++);
+      float y = *src++;
+      *dst++ = gamma_2_2_to_linear_sse2 (splat4f (y))[0];
     }
 }