From 098b4169f133d710b94a06f0527198601d34e655 Mon Sep 17 00:00:00 2001 From: Diego Biurrun Date: Tue, 7 Oct 2008 21:41:25 +0000 Subject: Add a bunch of const qualifiers to function arguments. Taken from the upstream libmpeg2 version of the file. Originally committed as revision 15585 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/i386/idct_mmx.c | 29 +++++++++++++++++------------ 1 file changed, 17 insertions(+), 12 deletions(-) (limited to 'libavcodec') diff --git a/libavcodec/i386/idct_mmx.c b/libavcodec/i386/idct_mmx.c index 1e4add9f96..aed934c04d 100644 --- a/libavcodec/i386/idct_mmx.c +++ b/libavcodec/i386/idct_mmx.c @@ -85,7 +85,8 @@ 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, const int16_t * table) +static inline void mmxext_row_head (int16_t * const row, const int offset, + const int16_t * const table) { movq_m2r (*(row+offset), mm2); /* mm2 = x6 x4 x2 x0 */ @@ -101,7 +102,8 @@ static inline void mmxext_row_head (int16_t * row, int offset, const int16_t * t pshufw_r2r (mm2, mm2, 0x4e); /* mm2 = x2 x0 x6 x4 */ } -static inline void mmxext_row (const int16_t * table, const int32_t * rounder) +static inline void mmxext_row (const int16_t * const table, + const int32_t * const rounder) { movq_m2r (*(table+8), mm1); /* mm1 = -C5 -C1 C3 C1 */ pmaddwd_r2r (mm2, mm4); /* mm4 = C4*x0+C6*x2 C4*x4+C6*x6 */ @@ -140,7 +142,7 @@ static inline void mmxext_row (const int16_t * table, const int32_t * rounder) psubd_r2r (mm5, mm4); /* mm4 = a3-b3 a2-b2 + rounder */ } -static inline void mmxext_row_tail (int16_t * row, int store) +static inline void mmxext_row_tail (int16_t * const row, const int store) { psrad_i2r (ROW_SHIFT, mm0); /* mm0 = y3 y2 */ @@ -158,8 +160,9 @@ static inline void mmxext_row_tail (int16_t * row, int store) movq_r2m (mm4, *(row+store+4)); /* save y7 y6 y5 y4 */ } -static inline void mmxext_row_mid (int16_t * row, int store, - int offset, const int16_t * table) +static inline void mmxext_row_mid (int16_t * const row, const int store, + const int offset, + const int16_t * const table) { movq_m2r (*(row+offset), mm2); /* mm2 = x6 x4 x2 x0 */ psrad_i2r (ROW_SHIFT, mm0); /* mm0 = y3 y2 */ @@ -197,7 +200,8 @@ 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, const int16_t * table) +static inline void mmx_row_head (int16_t * const row, const int offset, + const int16_t * const table) { movq_m2r (*(row+offset), mm2); /* mm2 = x6 x4 x2 x0 */ @@ -216,7 +220,8 @@ static inline void mmx_row_head (int16_t * row, int offset, const int16_t * tabl punpckhdq_r2r (mm2, mm2); /* mm2 = x6 x4 x6 x4 */ } -static inline void mmx_row (const int16_t * table, const int32_t * rounder) +static inline void mmx_row (const int16_t * const table, + const int32_t * const rounder) { pmaddwd_r2r (mm2, mm4); /* mm4 = -C4*x4-C2*x6 C4*x4+C6*x6 */ punpckldq_r2r (mm5, mm5); /* mm5 = x3 x1 x3 x1 */ @@ -255,7 +260,7 @@ static inline void mmx_row (const int16_t * table, const int32_t * rounder) psubd_r2r (mm5, mm7); /* mm7 = a3-b3 a2-b2 + rounder */ } -static inline void mmx_row_tail (int16_t * row, int store) +static inline void mmx_row_tail (int16_t * const row, const int store) { psrad_i2r (ROW_SHIFT, mm0); /* mm0 = y3 y2 */ @@ -279,8 +284,8 @@ static inline void mmx_row_tail (int16_t * row, int store) movq_r2m (mm7, *(row+store+4)); /* save y7 y6 y5 y4 */ } -static inline void mmx_row_mid (int16_t * row, int store, - int offset, const int16_t * table) +static inline void mmx_row_mid (int16_t * const row, const int store, + const int offset, const int16_t * const table) { movq_m2r (*(row+offset), mm2); /* mm2 = x6 x4 x2 x0 */ psrad_i2r (ROW_SHIFT, mm0); /* mm0 = y3 y2 */ @@ -387,7 +392,7 @@ static inline void idct_col (int16_t * col, int offset) /* MMX column IDCT */ -static inline void idct_col (int16_t * col, int offset) +static inline void idct_col (int16_t * const col, const int offset) { #define T1 13036 #define T2 27146 @@ -556,7 +561,7 @@ static const int32_t rounder5[] ATTR_ALIGN(8) = #undef ROW_SHIFT #define declare_idct(idct,table,idct_row_head,idct_row,idct_row_tail,idct_row_mid) \ -void idct (int16_t * block) \ +void idct (int16_t * const block) \ { \ static const int16_t table04[] ATTR_ALIGN(16) = \ table (22725, 21407, 19266, 16384, 12873, 8867, 4520); \ -- cgit v1.2.3