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Code Issues Releases Activity

x86: hevc_mc: split differently calls

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In some cases, 2 or 3 calls are performed to functions for unusual
widths. Instead, perform 2 calls for different widths to split the
workload.

The 8+16 and 4+8 widths for respectively 8 and more than 8 bits can't
be processed that way without modifications: some calls use unaligned
buffers, and having branches to handle this was resulting in no
micro-benchmark benefit.

For block_w == 12 (around 1% of the pixels of the sequence):
Before:
12758 decicycles in epel_uni, 4093 runs, 3 skips
19389 decicycles in qpel_uni, 8187 runs, 5 skips
22699 decicycles in epel_bi, 32743 runs, 25 skips
34736 decicycles in qpel_bi, 32733 runs, 35 skips

After:
11929 decicycles in epel_uni, 4096 runs, 0 skips
18131 decicycles in qpel_uni, 8184 runs, 8 skips
20065 decicycles in epel_bi, 32750 runs, 18 skips
31458 decicycles in qpel_bi, 32753 runs, 15 skips

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Christophe Gisquet 2014-08-24 08:46:30 +00:00 committed by Michael Niedermayer
parent 38e2aa3759
commit 3e892b2bcd
1 changed files with 41 additions and 2 deletions
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43
libavcodec/x86/hevcdsp_init.c
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@ -123,6 +123,45 @@ void ff_hevc_put_hevc_bi_##name##W##_##bitd##_##opt(uint8_t *_dst, ptrdiff_t dst
mc_rep_uni_func(name, bitd, step, W, opt); \
mc_rep_bi_func(name, bitd, step, W, opt)
#define mc_rep_func2(name, bitd, step1, step2, W, opt) \
void ff_hevc_put_hevc_##name##W##_##bitd##_##opt(int16_t *dst, \
uint8_t *src, ptrdiff_t _srcstride, int height, \
intptr_t mx, intptr_t my, int width) \
{ \
ff_hevc_put_hevc_##name##step1##_##bitd##_##opt(dst, src, _srcstride, height, mx, my, width); \
ff_hevc_put_hevc_##name##step2##_##bitd##_##opt(dst + step1, src + (step1 * ((bitd + 7) / 8)), \
_srcstride, height, mx, my, width); \
}
#define mc_rep_uni_func2(name, bitd, step1, step2, W, opt) \
void ff_hevc_put_hevc_uni_##name##W##_##bitd##_##opt(uint8_t *dst, ptrdiff_t dststride, \
uint8_t *src, ptrdiff_t _srcstride, int height, \
intptr_t mx, intptr_t my, int width) \
{ \
ff_hevc_put_hevc_uni_##name##step1##_##bitd##_##opt(dst, dststride, src, _srcstride, height, mx, my, width);\
ff_hevc_put_hevc_uni_##name##step2##_##bitd##_##opt(dst + (step1 * ((bitd + 7) / 8)), dststride, \
src + (step1 * ((bitd + 7) / 8)), _srcstride, \
height, mx, my, width); \
}
#define mc_rep_bi_func2(name, bitd, step1, step2, W, opt) \
void ff_hevc_put_hevc_bi_##name##W##_##bitd##_##opt(uint8_t *dst, ptrdiff_t dststride, uint8_t *src, \
ptrdiff_t _srcstride, int16_t* src2, \
int height, intptr_t mx, intptr_t my, int width) \
{ \
ff_hevc_put_hevc_bi_##name##step1##_##bitd##_##opt(dst, dststride, src, _srcstride, src2, height, mx, my, width);\
ff_hevc_put_hevc_bi_##name##step2##_##bitd##_##opt(dst + (step1 * ((bitd + 7) / 8)), dststride, \
src + (step1 * ((bitd + 7) / 8)), _srcstride, \
src2 + step1, height, mx, my, width); \
}
#define mc_rep_funcs(name, bitd, step, W, opt) \
mc_rep_func(name, bitd, step, W, opt); \
mc_rep_uni_func(name, bitd, step, W, opt); \
mc_rep_bi_func(name, bitd, step, W, opt)
#define mc_rep_funcs2(name, bitd, step1, step2, W, opt) \
mc_rep_func2(name, bitd, step1, step2, W, opt); \
mc_rep_uni_func2(name, bitd, step1, step2, W, opt); \
mc_rep_bi_func2(name, bitd, step1, step2, W, opt)
#if ARCH_X86_64 && HAVE_SSE4_EXTERNAL
@ -180,7 +219,7 @@ mc_rep_funcs(epel_hv, 8, 8, 48, sse4);
mc_rep_funcs(epel_hv, 8, 8, 32, sse4);
mc_rep_funcs(epel_hv, 8, 8, 24, sse4);
mc_rep_funcs(epel_hv, 8, 8, 16, sse4);
mc_rep_funcs(epel_hv, 8, 4, 12, sse4);
mc_rep_funcs2(epel_hv,8, 8, 4, 12, sse4);
mc_rep_funcs(epel_hv,10, 8, 64, sse4);
mc_rep_funcs(epel_hv,10, 8, 48, sse4);
mc_rep_funcs(epel_hv,10, 8, 32, sse4);
@ -231,7 +270,7 @@ mc_rep_funcs(qpel_hv, 8, 8, 48, sse4);
mc_rep_funcs(qpel_hv, 8, 8, 32, sse4);
mc_rep_funcs(qpel_hv, 8, 8, 24, sse4);
mc_rep_funcs(qpel_hv, 8, 8, 16, sse4);
mc_rep_funcs(qpel_hv, 8, 4, 12, sse4);
mc_rep_funcs2(qpel_hv,8, 8, 4, 12, sse4);
mc_rep_funcs(qpel_hv,10, 8, 64, sse4);
mc_rep_funcs(qpel_hv,10, 8, 48, sse4);
mc_rep_funcs(qpel_hv,10, 8, 32, sse4);