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

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Originally committed as revision 4551 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Michael Niedermayer 20 years ago
parent 6c0d606471
commit b5b65df7a9
1 changed files with 22 additions and 22 deletions
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  1. 44
      libavcodec/i386/idct_mmx.c

44
libavcodec/i386/idct_mmx.c
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@ -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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