hevcdsp: replace the SAOParams struct parameter from sao_edge_filter

As with sao_band_filter, pass instead the two variables from the struct needed in the function.
This simplifies writing asm optimized versions.

Reviewed-by: Mickaël Raulet <mraulet@insa-rennes.fr>
Signed-off-by: James Almer <jamrial@gmail.com>

libavcodec/hevc_filter.c

@@ -427,7 +427,9 @@ static void sao_filter_CTB(HEVCContext *s, int x, int y)
 
             copy_CTB_to_hv(s, src, stride_src, x0, y0, width, height, c_idx,
                            x_ctb, y_ctb);
-            s->hevcdsp.sao_edge_filter(src, dst, stride_src, stride_dst, sao, width, height, c_idx);
+            s->hevcdsp.sao_edge_filter(src, dst, stride_src, stride_dst,
+                                       sao->offset_val[c_idx], sao->eo_class[c_idx],
+                                       width, height);
             s->hevcdsp.sao_edge_restore[restore](src, dst,
                                                 stride_src, stride_dst,
                                                 sao,

libavcodec/hevcdsp.h

@@ -62,8 +62,8 @@ typedef struct HEVCDSPContext {
                                int16_t *sao_offset_val, int sao_left_class, int width, int height);
 
     void (*sao_edge_filter)(uint8_t *_dst, uint8_t *_src, ptrdiff_t stride_dst,
-                            ptrdiff_t stride_src, SAOParams *sao, int width,
-                            int height, int c_idx);
+                            ptrdiff_t stride_src, int16_t *sao_offset_val, int sao_eo_class,
+                            int width, int height);
 
     void (*sao_edge_restore[2])(uint8_t *_dst, uint8_t *_src, ptrdiff_t _stride_dst, ptrdiff_t _stride_src,
                                 struct SAOParams *sao, int *borders, int _width, int _height, int c_idx,

libavcodec/hevcdsp_template.c

@@ -328,9 +328,8 @@ static void FUNC(sao_band_filter_0)(uint8_t *_dst, uint8_t *_src,
 #define CMP(a, b) ((a) > (b) ? 1 : ((a) == (b) ? 0 : -1))
 
 static void FUNC(sao_edge_filter)(uint8_t *_dst, uint8_t *_src,
-                                  ptrdiff_t stride_dst, ptrdiff_t stride_src, SAOParams *sao,
-                                  int width, int height,
-                                  int c_idx) {
+                                  ptrdiff_t stride_dst, ptrdiff_t stride_src, int16_t *sao_offset_val,
+                                  int eo, int width, int height) {
 
     static const uint8_t edge_idx[] = { 1, 2, 0, 3, 4 };
     static const int8_t pos[4][2][2] = {
@@ -339,8 +338,6 @@ static void FUNC(sao_edge_filter)(uint8_t *_dst, uint8_t *_src,
         { { -1, -1 }, {  1, 1 } }, // 45 degree
         { {  1, -1 }, { -1, 1 } }, // 135 degree
     };
-    int16_t *sao_offset_val = sao->offset_val[c_idx];
-    int eo     = sao->eo_class[c_idx];
     pixel *dst = (pixel *)_dst;
     pixel *src = (pixel *)_src;
     int a_stride, b_stride;