h261: Remove H.261 loop filter from dsputil

There is no arch-optimized version of the H.261 loop filter and there
likely will never be, so the dsputil overhead does not give any benefit.

1 files changed, 0 insertions, 29 deletions

diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c
index 10d775ca5e..7b7cdc88d4 100644
--- a/libavcodec/dsputil.c
+++ b/libavcodec/dsputil.c
@@ -1479,33 +1479,6 @@ static void h263_h_loop_filter_c(uint8_t *src, int stride, int qscale){
     }
 }
 
-static void h261_loop_filter_c(uint8_t *src, int stride){
-    int x,y,xy,yz;
-    int temp[64];
-
-    for(x=0; x<8; x++){
-        temp[x      ] = 4*src[x           ];
-        temp[x + 7*8] = 4*src[x + 7*stride];
-    }
-    for(y=1; y<7; y++){
-        for(x=0; x<8; x++){
-            xy = y * stride + x;
-            yz = y * 8 + x;
-            temp[yz] = src[xy - stride] + 2*src[xy] + src[xy + stride];
-        }
-    }
-
-    for(y=0; y<8; y++){
-        src[  y*stride] = (temp[  y*8] + 2)>>2;
-        src[7+y*stride] = (temp[7+y*8] + 2)>>2;
-        for(x=1; x<7; x++){
-            xy = y * stride + x;
-            yz = y * 8 + x;
-            src[xy] = (temp[yz-1] + 2*temp[yz] + temp[yz+1] + 8)>>4;
-        }
-    }
-}
-
 static inline int pix_abs16_c(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
 {
     int s, i;
@@ -2735,8 +2708,6 @@ av_cold void ff_dsputil_init(DSPContext* c, AVCodecContext *avctx)
         c->h263_v_loop_filter= h263_v_loop_filter_c;
     }
 
-    c->h261_loop_filter= h261_loop_filter_c;
-
     c->try_8x8basis= try_8x8basis_c;
     c->add_8x8basis= add_8x8basis_c;