[FFmpeg-devel] [PATCH 5/6] x86: huffyuvdsp: MMX add_hfyu_left_pred_bgr32
Christophe Gisquet
christophe.gisquet at gmail.com
Thu May 29 11:10:40 CEST 2014
C MMX MMX2
Cycles: 3092 1356 1060
Unrolling is a ~15% gain.
---
libavcodec/x86/huffyuvdsp.asm | 37 +++++++++++++++++++++++++++++++++++++
libavcodec/x86/huffyuvdsp_init.c | 10 +++++++++-
2 files changed, 46 insertions(+), 1 deletion(-)
diff --git a/libavcodec/x86/huffyuvdsp.asm b/libavcodec/x86/huffyuvdsp.asm
index 9806fed..38309b7 100644
--- a/libavcodec/x86/huffyuvdsp.asm
+++ b/libavcodec/x86/huffyuvdsp.asm
@@ -217,3 +217,40 @@ cglobal add_bytes, 3,4,4, dst, src, w, size
jmp .2
.end:
REP_RET
+
+; void add_hfyu_left_pred_bgr32(uint8_t *dst, const uint8_t *src,
+; intptr_t w, uint8_t *left)
+%macro LEFT_BGR32 0
+cglobal add_hfyu_left_pred_bgr32, 4,4,0, dst, src, w, left
+ shl wq, 2
+ movd m0, [leftq]
+ lea dstq, [dstq + wq]
+ lea srcq, [srcq + wq]
+ neg wq
+.loop:
+ movd m1, [srcq+wq]
+ movd m2, [srcq+wq+mmsize/2]
+ paddb m0, m1
+ punpckldq m0, m0
+ paddb m0, m2
+%if cpuflag(mmxext)
+ pshufw m1, m0, q1032
+%else
+ mova m1, m0
+ mova m2, m0
+ psllq m1, 32
+ psrlq m2, 32
+ por m1, m2
+%endif
+ mova [dstq+wq], m1
+ add wq, mmsize
+ jl .loop
+ movd m0, [dstq-4]
+ movd [leftq], m0
+ REP_RET
+%endmacro
+
+INIT_MMX mmx
+LEFT_BGR32
+INIT_MMX mmxext
+LEFT_BGR32
diff --git a/libavcodec/x86/huffyuvdsp_init.c b/libavcodec/x86/huffyuvdsp_init.c
index 1a42b87..2abd8d5 100644
--- a/libavcodec/x86/huffyuvdsp_init.c
+++ b/libavcodec/x86/huffyuvdsp_init.c
@@ -40,6 +40,11 @@ int ff_add_hfyu_left_pred_ssse3(uint8_t *dst, const uint8_t *src,
int ff_add_hfyu_left_pred_sse4(uint8_t *dst, const uint8_t *src,
int w, int left);
+void ff_add_hfyu_left_pred_bgr32_mmx(uint8_t *dst, const uint8_t *src,
+ intptr_t w, uint8_t *left);
+void ff_add_hfyu_left_pred_bgr32_mmxext(uint8_t *dst, const uint8_t *src,
+ intptr_t w, uint8_t *left);
+
av_cold void ff_huffyuvdsp_init_x86(HuffYUVDSPContext *c)
{
int cpu_flags = av_get_cpu_flags();
@@ -49,13 +54,16 @@ av_cold void ff_huffyuvdsp_init_x86(HuffYUVDSPContext *c)
c->add_hfyu_median_pred = ff_add_hfyu_median_pred_cmov;
#endif
- if (EXTERNAL_MMX(cpu_flags))
+ if (EXTERNAL_MMX(cpu_flags)) {
c->add_bytes = ff_add_bytes_mmx;
+ c->add_hfyu_left_pred_bgr32 = ff_add_hfyu_left_pred_bgr32_mmx;
+ }
if (EXTERNAL_MMXEXT(cpu_flags)) {
/* slower than cmov version on AMD */
if (!(cpu_flags & AV_CPU_FLAG_3DNOW))
c->add_hfyu_median_pred = ff_add_hfyu_median_pred_mmxext;
+ c->add_hfyu_left_pred_bgr32 = ff_add_hfyu_left_pred_bgr32_mmxext;
}
if (EXTERNAL_SSE2(cpu_flags)) {
--
1.8.0.msysgit.0
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