Move add_hfyu_median_prediction_int16() to losslessviddsp

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

libavcodec/huffyuvdec.c

@@ -698,25 +698,7 @@ static void add_median_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *s
     if (s->bps <= 8) {
         s->dsp.add_hfyu_median_prediction(dst, src, diff, w, left, left_top);
     } else {
-        //FIXME optimize
-        unsigned mask = s->n-1;
-        int i;
-        uint16_t l, lt;
-        const uint16_t *src16  = (const uint16_t *)src;
-        const uint16_t *diff16 = (const uint16_t *)diff;
-        uint16_t       *dst16  = (      uint16_t *)dst;
-
-        l  = *left;
-        lt = *left_top;
-
-        for(i=0; i<w; i++){
-            l  = (mid_pred(l, src16[i], (l + src16[i] - lt) & mask) + diff16[i]) & mask;
-            lt = src16[i];
-            dst16[i] = l;
-        }
-
-        *left     = l;
-        *left_top = lt;
+        s->llviddsp.add_hfyu_median_prediction_int16((uint16_t *)dst, (const uint16_t *)src, (const uint16_t *)diff, s->n-1, w, left, left_top);
     }
 }
 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,

libavcodec/lossless_videodsp.c

@@ -19,6 +19,7 @@
  */
 #include "avcodec.h"
 #include "lossless_videodsp.h"
+#include "libavcodec/mathops.h"
 
 static void add_int16_c(uint16_t *dst, const uint16_t *src, unsigned mask, int w){
     long i;
@@ -59,6 +60,23 @@ static void diff_int16_c(uint16_t *dst, const uint16_t *src1, const uint16_t *sr
         dst[i] = (src1[i] - src2[i]) & mask;
 }
 
+static void add_hfyu_median_prediction_int16_c(uint16_t *dst, const uint16_t *src, const uint16_t *diff, 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++){
+        l  = (mid_pred(l, src[i], (l + src[i] - lt) & mask) + diff[i]) & mask;
+        lt = src[i];
+        dst[i] = l;
+    }
+
+    *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;
 
@@ -84,6 +102,7 @@ void ff_llviddsp_init(LLVidDSPContext *c)
     c->add_int16 = add_int16_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;
 
     if (ARCH_X86)
         ff_llviddsp_init_x86(c);

libavcodec/lossless_videodsp.h

@@ -28,6 +28,8 @@
 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 (*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;