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authorChristophe Gisquet <christophe.gisquet@gmail.com>2013-04-07 20:20:33 +0000
committerMichael Niedermayer <michaelni@gmx.at>2013-04-08 02:26:34 +0200
commite2946e5c3482ab78913bfa5527a6fa9ea4e70bb4 (patch)
treee5964637887b5189cd2b2f1f3719fcb03cc57694 /libavcodec
parent1adf54de56be13a6df51c5d42f0ecf2e1ec0c648 (diff)
downloadffmpeg-e2946e5c3482ab78913bfa5527a6fa9ea4e70bb4.tar.gz
x86: sbrdsp: implement SSE qmf_deint_bfly
From 312 to 89/68 (sse/sse2) cycles on Arrandale and Win64. Sandybridge: 68/47 cycles. Having a loop counter is a 7 cycle gain. Unrolling is another 7 cycle gain. Working in reverse scan is another 6 cycles. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec')
-rw-r--r--libavcodec/x86/sbrdsp.asm42
-rw-r--r--libavcodec/x86/sbrdsp_init.c7
2 files changed, 49 insertions, 0 deletions
diff --git a/libavcodec/x86/sbrdsp.asm b/libavcodec/x86/sbrdsp.asm
index 2900469dbd..273e950563 100644
--- a/libavcodec/x86/sbrdsp.asm
+++ b/libavcodec/x86/sbrdsp.asm
@@ -242,3 +242,45 @@ cglobal sbr_neg_odd_64, 1,2,4,z
cmp zq, r1q
jne .loop
REP_RET
+
+; sbr_qmf_deint_bfly(float *v, const float *src0, const float *src1)
+%macro SBR_QMF_DEINT_BFLY 0
+cglobal sbr_qmf_deint_bfly, 3,5,8, v,src0,src1,vrev,c
+ mov cq, 64*4-2*mmsize
+ lea vrevq, [vq + 64*4]
+.loop:
+ mova m0, [src0q+cq]
+ mova m1, [src1q]
+ mova m4, [src0q+cq+mmsize]
+ mova m5, [src1q+mmsize]
+%if cpuflag(sse2)
+ pshufd m2, m0, q0123
+ pshufd m3, m1, q0123
+ pshufd m6, m4, q0123
+ pshufd m7, m5, q0123
+%else
+ shufps m2, m0, m0, q0123
+ shufps m3, m1, m1, q0123
+ shufps m6, m4, m4, q0123
+ shufps m7, m5, m5, q0123
+%endif
+ addps m5, m2
+ subps m0, m7
+ addps m1, m6
+ subps m4, m3
+ mova [vrevq], m1
+ mova [vrevq+mmsize], m5
+ mova [vq+cq], m0
+ mova [vq+cq+mmsize], m4
+ add src1q, 2*mmsize
+ add vrevq, 2*mmsize
+ sub cq, 2*mmsize
+ jge .loop
+ REP_RET
+%endmacro
+
+INIT_XMM sse
+SBR_QMF_DEINT_BFLY
+
+INIT_XMM sse2
+SBR_QMF_DEINT_BFLY
diff --git a/libavcodec/x86/sbrdsp_init.c b/libavcodec/x86/sbrdsp_init.c
index cb65a23f22..8cc37ddd4b 100644
--- a/libavcodec/x86/sbrdsp_init.c
+++ b/libavcodec/x86/sbrdsp_init.c
@@ -34,6 +34,8 @@ void ff_sbr_hf_gen_sse(float (*X_high)[2], const float (*X_low)[2],
float bw, int start, int end);
void ff_sbr_neg_odd_64_sse(float *z);
void ff_sbr_qmf_post_shuffle_sse(float W[32][2], const float *z);
+void ff_sbr_qmf_deint_bfly_sse(float *v, const float *src0, const float *src1);
+void ff_sbr_qmf_deint_bfly_sse2(float *v, const float *src0, const float *src1);
av_cold void ff_sbrdsp_init_x86(SBRDSPContext *s)
{
@@ -46,5 +48,10 @@ 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->qmf_deint_bfly = ff_sbr_qmf_deint_bfly_sse;
+ }
+
+ if (EXTERNAL_SSE2(mm_flags)) {
+ s->qmf_deint_bfly = ff_sbr_qmf_deint_bfly_sse2;
}
}