X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fsimple_idct.c;h=0711e167a56ed356720867bc778d5b80563993f4;hb=ef9f7bbfa47317f9d46bf46982a394d2be78503c;hp=eeb627999c0d79f00eb3575ce3b93f2fbc19ea90;hpb=b03260fde08ca9759d7560df60bb6286420aad65;p=ffmpeg

diff --git a/libavcodec/simple_idct.c b/libavcodec/simple_idct.c
index eeb627999c0..0711e167a56 100644
--- a/libavcodec/simple_idct.c
+++ b/libavcodec/simple_idct.c
@@ -36,6 +36,11 @@
 
 #define BIT_DEPTH 10
 #include "simple_idct_template.c"
+
+#define EXTRA_SHIFT  2
+#include "simple_idct_template.c"
+
+#undef EXTRA_SHIFT
 #undef BIT_DEPTH
 
 #define BIT_DEPTH 12
@@ -127,7 +132,7 @@ void ff_simple_idct248_put(uint8_t *dest, int line_size, int16_t *block)
 #undef C1
 #undef C2
 #define CN_SHIFT 12
-#define C_FIX(x) ((int)((x) * 1.414213562 * (1 << CN_SHIFT) + 0.5))
+#define C_FIX(x) ((int)((x) * M_SQRT2 * (1 << CN_SHIFT) + 0.5))
 #define C1 C_FIX(0.6532814824)
 #define C2 C_FIX(0.2705980501)
 #define C3 C_FIX(0.5)
@@ -154,7 +159,7 @@ static inline void idct4col_add(uint8_t *dest, int line_size, const int16_t *col
 }
 
 #define RN_SHIFT 15
-#define R_FIX(x) ((int)((x) * 1.414213562 * (1 << RN_SHIFT) + 0.5))
+#define R_FIX(x) ((int)((x) * M_SQRT2 * (1 << RN_SHIFT) + 0.5))
 #define R1 R_FIX(0.6532814824)
 #define R2 R_FIX(0.2705980501)
 #define R3 R_FIX(0.5)
@@ -230,10 +235,10 @@ void ff_prores_idct(int16_t *block, const int16_t *qmat)
         block[i] *= qmat[i];
 
     for (i = 0; i < 8; i++)
-        idctRowCondDC_10(block + i*8, 2);
+        idctRowCondDC_extrashift_10(block + i*8, 2);
 
     for (i = 0; i < 8; i++) {
         block[i] += 8192;
-        idctSparseCol_10(block + i);
+        idctSparseCol_extrashift_10(block + i);
     }
 }