ffmpeg | branch: master | Paul B Mahol <one...@gmail.com> | Thu Oct 21 21:05:02 
2021 +0200| [f0ad40b525b5f882f048cf69139bbe496ba59eea] | committer: Paul B Mahol

avfilter/vf_bilateral: remove unneeded multiplications

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f0ad40b525b5f882f048cf69139bbe496ba59eea
---

 libavfilter/vf_bilateral.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/libavfilter/vf_bilateral.c b/libavfilter/vf_bilateral.c
index 2a4a3df6cc..61c9084933 100644
--- a/libavfilter/vf_bilateral.c
+++ b/libavfilter/vf_bilateral.c
@@ -186,11 +186,11 @@ static void bilateral_##name(BilateralContext *s, const 
uint8_t *ssrc, uint8_t *
             *temp_factor_x++ = fc = inv_alpha_ + alpha_ * fp;                  
           \
             fp = fc;                                                           
           \
         }                                                                      
           \
-        --temp_x; *temp_x = 0.5f*((*temp_x) + (*--in_x));                      
           \
+        --temp_x; *temp_x = ((*temp_x) + (*--in_x));                           
           \
         tpr = *--texture_x;                                                    
           \
         ypr = *in_x;                                                           
           \
                                                                                
           \
-        --temp_factor_x; *temp_factor_x = 0.5f*((*temp_factor_x) + 1);         
           \
+        --temp_factor_x; *temp_factor_x = ((*temp_factor_x) + 1);              
           \
         fp = 1;                                                                
           \
                                                                                
           \
         for (int x = width - 2; x >= 0; x--) {                                 
           \
@@ -200,13 +200,13 @@ static void bilateral_##name(BilateralContext *s, const 
uint8_t *ssrc, uint8_t *
             float alpha_ = range_table[range_dist];                            
           \
                                                                                
           \
             ycr = inv_alpha_ * (*--in_x) + alpha_ * ypr;                       
           \
-            --temp_x; *temp_x = 0.5f*((*temp_x) + ycr);                        
           \
+            --temp_x; *temp_x = ((*temp_x) + ycr);                             
           \
             tpr = tcr;                                                         
           \
             ypr = ycr;                                                         
           \
                                                                                
           \
             fc = inv_alpha_ + alpha_*fp;                                       
           \
             --temp_factor_x;                                                   
           \
-            *temp_factor_x = 0.5f*((*temp_factor_x) + fc);                     
           \
+            *temp_factor_x = ((*temp_factor_x) + fc);                          
           \
             fp = fc;                                                           
           \
         }                                                                      
           \
     }                                                                          
           \
@@ -238,14 +238,14 @@ static void bilateral_##name(BilateralContext *s, const 
uint8_t *ssrc, uint8_t *
     ypf = line_factor_b;                                                       
           \
     memcpy(ypf, &in_factor[h1 * width], sizeof(float) * width);                
           \
     for (int x = 0; x < width; x++)                                            
           \
-        map_factor_b[h1 * width + x] = 0.5f*(map_factor_b[h1 * width + x] + 
ypf[x]);      \
+        map_factor_b[h1 * width + x] = (map_factor_b[h1 * width + x] + 
ypf[x]);           \
                                                                                
           \
     ycy = slice_factor_a;                                                      
           \
     ypy = slice_factor_b;                                                      
           \
     memcpy(ypy, &img_temp[h1 * width], sizeof(float) * width);                 
           \
     for (int x = 0, k = 0; x < width; x++) {                                   
           \
         int idx = h1 * width + x;                                              
           \
-        img_out_f[idx] = 0.5f*(img_out_f[idx] + ypy[k++]) / map_factor_b[h1 * 
width + x]; \
+        img_out_f[idx] = (img_out_f[idx] + ypy[k++]) / map_factor_b[h1 * width 
+ x];      \
     }                                                                          
           \
                                                                                
           \
     for (int y = h1 - 1; y >= 0; y--) {                                        
           \
@@ -270,11 +270,11 @@ static void bilateral_##name(BilateralContext *s, const 
uint8_t *ssrc, uint8_t *
             float ycc, fcc = inv_alpha_*(*xcf++) + alpha_*(*ypf_++);           
           \
                                                                                
           \
             *ycf_++ = fcc;                                                     
           \
-            *factor_ = 0.5f * (*factor_ + fcc);                                
           \
+            *factor_ = (*factor_ + fcc);                                       
           \
                                                                                
           \
             ycc = inv_alpha_*(*xcy++) + alpha_*(*ypy_++);                      
           \
             *ycy_++ = ycc;                                                     
           \
-            *out_ = 0.5f * (*out_ + ycc) / (*factor_);                         
           \
+            *out_ = (*out_ + ycc) / (*factor_);                                
           \
             out_++;                                                            
           \
             factor_++;                                                         
           \
         }                                                                      
           \

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