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| author | Christophe Gisquet <christophe.gisquet@gmail.com> | 2013-04-04 19:45:52 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-04-05 16:42:12 +0200 |
| commit | 37a9708391ae1fc202f090f24039b242f308c303 (patch) | |
| tree | 2025e80546c6302ca6f536ffebcbcaf6e0c9abff | |
| parent | 0b467a6e83bd4926382c8a2fe1a12b9128f3b037 (diff) | |
| download | ffmpeg-37a9708391ae1fc202f090f24039b242f308c303.tar.gz | |
x86: sbrdsp: implement SSE neg_odd_64
Timing on Arrandale:
C SSE
Win32: 57 44
Win64: 47 38
Unrolling and not storing mask both save some cycles.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/x86/sbrdsp.asm | 22 | ||||
| -rw-r--r-- | libavcodec/x86/sbrdsp_init.c | 2 |
2 files changed, 24 insertions, 0 deletions
diff --git a/libavcodec/x86/sbrdsp.asm b/libavcodec/x86/sbrdsp.asm index 1b7f3a8646..999e5af79e 100644 --- a/libavcodec/x86/sbrdsp.asm +++ b/libavcodec/x86/sbrdsp.asm @@ -24,6 +24,7 @@ SECTION_RODATA ; mask equivalent for multiply by -1.0 1.0 ps_mask times 2 dd 1<<31, 0 +ps_mask2 times 2 dd 0, 1<<31 ps_neg times 4 dd 1<<31 SECTION_TEXT @@ -220,3 +221,24 @@ cglobal sbr_qmf_post_shuffle, 2,3,4,W,z cmp zq, r2q jl .loop REP_RET + +INIT_XMM sse +cglobal sbr_neg_odd_64, 1,2,4,z + lea r1q, [zq+256] +.loop: + mova m0, [zq+ 0] + mova m1, [zq+16] + mova m2, [zq+32] + mova m3, [zq+48] + xorps m0, [ps_mask2] + xorps m1, [ps_mask2] + xorps m2, [ps_mask2] + xorps m3, [ps_mask2] + mova [zq+ 0], m0 + mova [zq+16], m1 + mova [zq+32], m2 + mova [zq+48], m3 + add zq, 64 + cmp zq, r1q + jne .loop + REP_RET diff --git a/libavcodec/x86/sbrdsp_init.c b/libavcodec/x86/sbrdsp_init.c index 27fade133f..d8d6ae73e8 100644 --- a/libavcodec/x86/sbrdsp_init.c +++ b/libavcodec/x86/sbrdsp_init.c @@ -33,6 +33,7 @@ void ff_sbr_hf_gen_sse(float (*X_high)[2], const float (*X_low)[2], const float alpha0[2], const float alpha1[2], float bw, int start, int end); void ff_sbr_qmf_post_shuffle_sse(float W[32][2], const float *z); +void ff_sbr_neg_odd_64_sse(float *z); av_cold void ff_sbrdsp_init_x86(SBRDSPContext *s) { @@ -44,5 +45,6 @@ av_cold void ff_sbrdsp_init_x86(SBRDSPContext *s) s->hf_g_filt = ff_sbr_hf_g_filt_sse; s->hf_gen = ff_sbr_hf_gen_sse; s->qmf_post_shuffle = ff_sbr_qmf_post_shuffle_sse; + s->neg_odd_64 = ff_sbr_neg_odd_64_sse; } } |