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ffmpeg.wasm-core
Commit b5b65df7 authored by Michael Niedermayer's avatar Michael Niedermayer
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add consts (this was in my local tree, dunno where it came from, probably... 

add consts (this was in my local tree, dunno where it came from, probably forgoten from some const patch)

Originally committed as revision 4551 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent 6c0d6064
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Showing with 22 additions and 22 deletions
libavcodec/i386/idct_mmx.c
View file @ b5b65df7
......@@ -86,7 +86,7 @@ static inline void idct_row (int16_t * row, int offset,
c5, -c1, c3, -c1, \
c7, c3, c7, -c5 }
static inline void mmxext_row_head (int16_t * row, int offset, int16_t * table)
static inline void mmxext_row_head (int16_t * row, int offset, const int16_t * table)
{
movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
......@@ -102,7 +102,7 @@ static inline void mmxext_row_head (int16_t * row, int offset, int16_t * table)
pshufw_r2r (mm2, mm2, 0x4e); // mm2 = x2 x0 x6 x4
}
static inline void mmxext_row (int16_t * table, int32_t * rounder)
static inline void mmxext_row (const int16_t * table, const int32_t * rounder)
{
movq_m2r (*(table+8), mm1); // mm1 = -C5 -C1 C3 C1
pmaddwd_r2r (mm2, mm4); // mm4 = C4*x0+C6*x2 C4*x4+C6*x6
......@@ -160,7 +160,7 @@ static inline void mmxext_row_tail (int16_t * row, int store)
}
static inline void mmxext_row_mid (int16_t * row, int store,
int offset, int16_t * table)
int offset, const int16_t * table)
{
movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
......@@ -198,7 +198,7 @@ static inline void mmxext_row_mid (int16_t * row, int store,
c5, -c1, c7, -c5, \
c7, c3, c3, -c1 }
static inline void mmx_row_head (int16_t * row, int offset, int16_t * table)
static inline void mmx_row_head (int16_t * row, int offset, const int16_t * table)
{
movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
......@@ -217,7 +217,7 @@ static inline void mmx_row_head (int16_t * row, int offset, int16_t * table)
punpckhdq_r2r (mm2, mm2); // mm2 = x6 x4 x6 x4
}
static inline void mmx_row (int16_t * table, int32_t * rounder)
static inline void mmx_row (const int16_t * table, const int32_t * rounder)
{
pmaddwd_r2r (mm2, mm4); // mm4 = -C4*x4-C2*x6 C4*x4+C6*x6
punpckldq_r2r (mm5, mm5); // mm5 = x3 x1 x3 x1
......@@ -281,7 +281,7 @@ static inline void mmx_row_tail (int16_t * row, int store)
}
static inline void mmx_row_mid (int16_t * row, int store,
int offset, int16_t * table)
int offset, const int16_t * table)
{
movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
......@@ -395,10 +395,10 @@ static inline void idct_col (int16_t * col, int offset)
#define T3 43790
#define C4 23170
static short _T1[] ATTR_ALIGN(8) = {T1,T1,T1,T1};
static short _T2[] ATTR_ALIGN(8) = {T2,T2,T2,T2};
static short _T3[] ATTR_ALIGN(8) = {T3,T3,T3,T3};
static short _C4[] ATTR_ALIGN(8) = {C4,C4,C4,C4};
static const short _T1[] ATTR_ALIGN(8) = {T1,T1,T1,T1};
static const short _T2[] ATTR_ALIGN(8) = {T2,T2,T2,T2};
static const short _T3[] ATTR_ALIGN(8) = {T3,T3,T3,T3};
static const short _C4[] ATTR_ALIGN(8) = {C4,C4,C4,C4};
/* column code adapted from peter gubanov */
/* http://www.elecard.com/peter/idct.shtml */
......@@ -536,20 +536,20 @@ static inline void idct_col (int16_t * col, int offset)
#undef C4
}
static int32_t rounder0[] ATTR_ALIGN(8) =
static const int32_t rounder0[] ATTR_ALIGN(8) =
rounder ((1 << (COL_SHIFT - 1)) - 0.5);
static int32_t rounder4[] ATTR_ALIGN(8) = rounder (0);
static int32_t rounder1[] ATTR_ALIGN(8) =
static const int32_t rounder4[] ATTR_ALIGN(8) = rounder (0);
static const int32_t rounder1[] ATTR_ALIGN(8) =
rounder (1.25683487303); /* C1*(C1/C4+C1+C7)/2 */
static int32_t rounder7[] ATTR_ALIGN(8) =
static const int32_t rounder7[] ATTR_ALIGN(8) =
rounder (-0.25); /* C1*(C7/C4+C7-C1)/2 */
static int32_t rounder2[] ATTR_ALIGN(8) =
static const int32_t rounder2[] ATTR_ALIGN(8) =
rounder (0.60355339059); /* C2 * (C6+C2)/2 */
static int32_t rounder6[] ATTR_ALIGN(8) =
static const int32_t rounder6[] ATTR_ALIGN(8) =
rounder (-0.25); /* C2 * (C6-C2)/2 */
static int32_t rounder3[] ATTR_ALIGN(8) =
static const int32_t rounder3[] ATTR_ALIGN(8) =
rounder (0.087788325588); /* C3*(-C3/C4+C3+C5)/2 */
static int32_t rounder5[] ATTR_ALIGN(8) =
static const int32_t rounder5[] ATTR_ALIGN(8) =
rounder (-0.441341716183); /* C3*(-C5/C4+C5-C3)/2 */
#undef COL_SHIFT
......@@ -558,13 +558,13 @@ static int32_t rounder5[] ATTR_ALIGN(8) =
#define declare_idct(idct,table,idct_row_head,idct_row,idct_row_tail,idct_row_mid) \
void idct (int16_t * block) \
{ \
static int16_t table04[] ATTR_ALIGN(16) = \
static const int16_t table04[] ATTR_ALIGN(16) = \
table (22725, 21407, 19266, 16384, 12873, 8867, 4520); \
static int16_t table17[] ATTR_ALIGN(16) = \
static const int16_t table17[] ATTR_ALIGN(16) = \
table (31521, 29692, 26722, 22725, 17855, 12299, 6270); \
static int16_t table26[] ATTR_ALIGN(16) = \
static const int16_t table26[] ATTR_ALIGN(16) = \
table (29692, 27969, 25172, 21407, 16819, 11585, 5906); \
static int16_t table35[] ATTR_ALIGN(16) = \
static const int16_t table35[] ATTR_ALIGN(16) = \
table (26722, 25172, 22654, 19266, 15137, 10426, 5315); \
\
idct_row_head (block, 0*8, table04); \
......
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