Move sub_hfyu_median_prediction_int16() to losslessviddsp

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/huffyuvenc.c

@@ -156,25 +156,7 @@ static void sub_median_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *s
     if (s->bps <= 8) {
         s->dsp.sub_hfyu_median_prediction(dst, src1, src2, w , left, left_top);
     } else {
-        int i;
-        uint16_t l, lt;
-        const uint16_t *src116 = (const uint16_t *)src1;
-        const uint16_t *src216 = (const uint16_t *)src2;
-        uint16_t       *dst16  = (      uint16_t *)dst;
-        unsigned mask = s->n - 1;
-
-        l  = *left;
-        lt = *left_top;
-
-        for(i=0; i<w; i++){
-            const int pred = mid_pred(l, src116[i], (l + src116[i] - lt) & mask);
-            lt = src116[i];
-            l  = src216[i];
-            dst16[i] = (l - pred) & mask;
-        }
-
-        *left     = l;
-        *left_top = lt;
+        s->llviddsp.sub_hfyu_median_prediction_int16((uint16_t *)dst, (const uint16_t *)src1, (const uint16_t *)src2, s->n - 1, w , left, left_top);
     }
 }
 

libavcodec/lossless_videodsp.c

@@ -77,6 +77,24 @@ static void add_hfyu_median_prediction_int16_c(uint16_t *dst, const uint16_t *sr
     *left_top = lt;
 }
 
+static void sub_hfyu_median_prediction_int16_c(uint16_t *dst, const uint16_t *src1, const uint16_t *src2, unsigned mask, int w, int *left, int *left_top){
+    int i;
+    uint16_t l, lt;
+
+    l  = *left;
+    lt = *left_top;
+
+    for(i=0; i<w; i++){
+        const int pred = mid_pred(l, src1[i], (l + src1[i] - lt) & mask);
+        lt = src1[i];
+        l  = src2[i];
+        dst[i] = (l - pred) & mask;
+    }
+
+    *left     = l;
+    *left_top = lt;
+}
+
 static int add_hfyu_left_prediction_int16_c(uint16_t *dst, const uint16_t *src, unsigned mask, int w, int acc){
     int i;
 
@@ -103,6 +121,7 @@ void ff_llviddsp_init(LLVidDSPContext *c)
     c->diff_int16= diff_int16_c;
     c->add_hfyu_left_prediction_int16   = add_hfyu_left_prediction_int16_c;
     c->add_hfyu_median_prediction_int16 = add_hfyu_median_prediction_int16_c;
+    c->sub_hfyu_median_prediction_int16 = sub_hfyu_median_prediction_int16_c;
 
     if (ARCH_X86)
         ff_llviddsp_init_x86(c);

libavcodec/lossless_videodsp.h

@@ -29,6 +29,7 @@ typedef struct LLVidDSPContext {
     void (*add_int16)(uint16_t *dst/*align 16*/, const uint16_t *src/*align 16*/, unsigned mask, int w);
     void (*diff_int16)(uint16_t *dst/*align 16*/, const uint16_t *src1/*align 16*/, const uint16_t *src2/*align 1*/, unsigned mask, int w);
 
+    void (*sub_hfyu_median_prediction_int16)(uint16_t *dst, const uint16_t *src1, const uint16_t *src2, unsigned mask, int w, int *left, int *left_top);
     void (*add_hfyu_median_prediction_int16)(uint16_t *dst, const uint16_t *top, const uint16_t *diff, unsigned mask, int w, int *left, int *left_top);
     int  (*add_hfyu_left_prediction_int16)(uint16_t *dst, const uint16_t *src, unsigned mask, int w, int left);
 } LLVidDSPContext;