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| author | Christophe Gisquet <christophe.gisquet@gmail.com> | 2015-10-12 19:37:44 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-10-13 01:10:34 +0200 |
| commit | e9a68b0316ab127098ac4c24a6762ce68980bd23 (patch) | |
| tree | c981ce654068e58b938e134e3557ff57e6b0eca4 /libavcodec/x86/constants.c | |
| parent | 93e6b23c9f489c1e0745769ae2ba00469f7cfb91 (diff) | |
| download | ffmpeg-e9a68b0316ab127098ac4c24a6762ce68980bd23.tar.gz | |
x86: prores: templatize 10 bits simple_idct
This should be reused for a generic simple_idct10 function.
Requires a bit of trickery to declare common constants in C.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/x86/constants.c')
| -rw-r--r-- | libavcodec/x86/constants.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/libavcodec/x86/constants.c b/libavcodec/x86/constants.c index 3f3ee0ffc1..9592fa73e1 100644 --- a/libavcodec/x86/constants.c +++ b/libavcodec/x86/constants.c @@ -87,3 +87,31 @@ DECLARE_ALIGNED(32, const ymm_reg, ff_pd_32) = { 0x0000002000000020ULL, 0x000 0x0000002000000020ULL, 0x0000002000000020ULL }; DECLARE_ALIGNED(32, const ymm_reg, ff_pd_65535)= { 0x0000ffff0000ffffULL, 0x0000ffff0000ffffULL, 0x0000ffff0000ffffULL, 0x0000ffff0000ffffULL }; + +/* simple idct 10 */ +#define W1sh2 22725 // W1 = 90901 = 22725<<2 + 1 +#define W2sh2 21407 // W2 = 85627 = 21407<<2 - 1 +#define W3sh2 19265 // W3 = 77062 = 19265<<2 + 2 +#define W4sh2 16384 // W4 = 65535 = 16384<<2 - 1 +#define W5sh2 12873 // W5 = 51491 = 12873<<2 - 1 +#define W6sh2 8867 // W6 = 35468 = 8867<<2 +#define W7sh2 4520 // W7 = 18081 = 4520<<2 + 1 + +#define TIMES4(a, b) \ + (((b)&0xFFFFLL)<<48)+(((a)&0xFFFFLL)<<32)+(((b)&0xFFFFLL)<<16)+((a)&0xFFFFLL), \ + (((b)&0xFFFFLL)<<48)+(((a)&0xFFFFLL)<<32)+(((b)&0xFFFFLL)<<16)+((a)&0xFFFFLL) + +#if ARCH_X86_64 +DECLARE_ALIGNED(16, const xmm_reg, ff_w4_plus_w2) = { TIMES4(W4sh2, W2sh2) }; +DECLARE_ALIGNED(16, const xmm_reg, ff_w4_min_w2) = { TIMES4(W4sh2, -W2sh2) }; +DECLARE_ALIGNED(16, const xmm_reg, ff_w4_plus_w6) = { TIMES4(W4sh2, +W6sh2) }; +DECLARE_ALIGNED(16, const xmm_reg, ff_w4_min_w6) = { TIMES4(W4sh2, -W6sh2) }; +DECLARE_ALIGNED(16, const xmm_reg, ff_w1_plus_w3) = { TIMES4(W1sh2, +W3sh2) }; +DECLARE_ALIGNED(16, const xmm_reg, ff_w3_min_w1) = { TIMES4(W3sh2, -W1sh2) }; +DECLARE_ALIGNED(16, const xmm_reg, ff_w7_plus_w3) = { TIMES4(W7sh2, +W3sh2) }; +DECLARE_ALIGNED(16, const xmm_reg, ff_w3_min_w7) = { TIMES4(W3sh2, -W7sh2) }; +DECLARE_ALIGNED(16, const xmm_reg, ff_w1_plus_w5) = { TIMES4(W1sh2, +W5sh2) }; +DECLARE_ALIGNED(16, const xmm_reg, ff_w5_min_w1) = { TIMES4(W5sh2, -W1sh2) }; +DECLARE_ALIGNED(16, const xmm_reg, ff_w5_plus_w7) = { TIMES4(W5sh2, +W7sh2) }; +DECLARE_ALIGNED(16, const xmm_reg, ff_w7_min_w5) = { TIMES4(W7sh2, -W5sh2) }; +#endif |