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Use word-writing instead of dword-writing (with two cached but otherwise

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unchanged bytes) in the horizontal simple loopfilter. This makes the filter
quite a bit faster in itself (~30 cycles less on Core1), probably mostly
because we don't need a complex 4x4 transpose, but only a simple byte
interleave. Also allows using pextrw on SSE4, which speeds up even more
(e.g. 25% faster on Core i7).

Originally committed as revision 24638 to svn://svn.ffmpeg.org/ffmpeg/trunk
oldabi
Ronald S. Bultje 15 years ago
parent ace7f813cd
commit 6341838f3c
2 changed files with 98 additions and 105 deletions
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  1. 4
      libavcodec/x86/vp8dsp-init.c
  2. 199
      libavcodec/x86/vp8dsp.asm

4
libavcodec/x86/vp8dsp-init.c
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@ -346,7 +346,6 @@ av_cold void ff_vp8dsp_init_x86(VP8DSPContext* c)
VP8_BILINEAR_MC_FUNC(1, 8, sse2);
c->vp8_v_loop_filter_simple = ff_vp8_v_loop_filter_simple_sse2;
c->vp8_h_loop_filter_simple = ff_vp8_h_loop_filter_simple_sse2;
c->vp8_v_loop_filter16y_inner = ff_vp8_v_loop_filter16y_inner_sse2;
c->vp8_v_loop_filter8uv_inner = ff_vp8_v_loop_filter8uv_inner_sse2;
@ -358,6 +357,8 @@ av_cold void ff_vp8dsp_init_x86(VP8DSPContext* c)
if (mm_flags & FF_MM_SSE2) {
c->vp8_idct_dc_add4y = ff_vp8_idct_dc_add4y_sse2;
c->vp8_h_loop_filter_simple = ff_vp8_h_loop_filter_simple_sse2;
c->vp8_h_loop_filter16y_inner = ff_vp8_h_loop_filter16y_inner_sse2;
c->vp8_h_loop_filter8uv_inner = ff_vp8_h_loop_filter8uv_inner_sse2;
@ -390,6 +391,7 @@ av_cold void ff_vp8dsp_init_x86(VP8DSPContext* c)
if (mm_flags & FF_MM_SSE4) {
c->vp8_idct_dc_add = ff_vp8_idct_dc_add_sse4;
c->vp8_h_loop_filter_simple = ff_vp8_h_loop_filter_simple_sse4;
c->vp8_h_loop_filter16y = ff_vp8_h_loop_filter16y_mbedge_sse4;
c->vp8_h_loop_filter8uv = ff_vp8_h_loop_filter8uv_mbedge_sse4;
}

199
libavcodec/x86/vp8dsp.asm
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@ -1354,6 +1354,81 @@ cglobal vp8_luma_dc_wht_mmx, 2,3
movd [%7+%9*2], m%4
%endmacro
; write 4 or 8 words in the mmx/xmm registers as 8 lines
; 1 and 2 are the registers to write, this can be the same (for SSE2)
; for pre-SSE4:
; 3 is a general-purpose register that we will clobber
; for SSE4:
; 3 is a pointer to the destination's 5th line
; 4 is a pointer to the destination's 4th line
; 5/6 is -stride and +stride
%macro WRITE_2x4W 6
movd %3, %1
punpckhdq %1, %1
mov [%4+%5*4], %3w
shr %3, 16
add %4, %6
mov [%4+%5*4], %3w
movd %3, %1
add %4, %5
mov [%4+%5*2], %3w
shr %3, 16
mov [%4+%5 ], %3w
movd %3, %2
punpckhdq %2, %2
mov [%4 ], %3w
shr %3, 16
mov [%4+%6 ], %3w
movd %3, %2
add %4, %6
mov [%4+%6 ], %3w
shr %3, 16
mov [%4+%6*2], %3w
add %4, %5
%endmacro
%macro WRITE_8W_SSE2 5
movd %2, %1
psrldq %1, 4
mov [%3+%4*4], %2w
shr %2, 16
add %3, %5
mov [%3+%4*4], %2w
movd %2, %1
psrldq %1, 4
add %3, %4
mov [%3+%4*2], %2w
shr %2, 16
mov [%3+%4 ], %2w
movd %2, %1
psrldq %1, 4
mov [%3 ], %2w
shr %2, 16
mov [%3+%5 ], %2w
movd %2, %1
add %3, %5
mov [%3+%5 ], %2w
shr %2, 16
mov [%3+%5*2], %2w
%endmacro
%macro WRITE_8W_SSE4 5
pextrw [%3+%4*4], %1, 0
pextrw [%2+%4*4], %1, 1
pextrw [%3+%4*2], %1, 2
pextrw [%3+%4 ], %1, 3
pextrw [%3 ], %1, 4
pextrw [%2 ], %1, 5
pextrw [%2+%5 ], %1, 6
pextrw [%2+%5*2], %1, 7
%endmacro
%macro SPLATB_REG_MMX 2-3
movd %1, %2
punpcklbw %1, %1
@ -1381,10 +1456,6 @@ cglobal vp8_luma_dc_wht_mmx, 2,3
%macro SIMPLE_LOOPFILTER 3
cglobal vp8_%2_loop_filter_simple_%1, 3, %3
%ifidn %2, h
mov r5, rsp ; backup stack pointer
and rsp, ~(mmsize-1) ; align stack
%endif
%if mmsize == 8 ; mmx/mmxext
mov r3, 2
%endif
@ -1400,7 +1471,6 @@ cglobal vp8_%2_loop_filter_simple_%1, 3, %3
neg r1
%ifidn %2, h
lea r0, [r0+4*r2-2]
sub rsp, mmsize*2 ; (aligned) storage space for saving p1/q1
%endif
%if mmsize == 8 ; mmx / mmxext
@ -1421,9 +1491,6 @@ cglobal vp8_%2_loop_filter_simple_%1, 3, %3
READ_16x4_INTERLEAVED 0, 1, 2, 3, 4, 5, 6, r0, r4, r1, r2, r3
%endif
TRANSPOSE4x4W 0, 1, 2, 3, 4
mova [rsp], m0 ; store p1
mova [rsp+mmsize], m3 ; store q1
%endif
; simple_limit
@ -1494,17 +1561,21 @@ cglobal vp8_%2_loop_filter_simple_%1, 3, %3
mova [r0], m4
mova [r0+r1], m6
%else ; h
mova m0, [rsp] ; p1
SWAP 2, 4 ; p0
SWAP 1, 6 ; q0
mova m3, [rsp+mmsize] ; q1
inc r0
SBUTTERFLY bw, 6, 4, 0
TRANSPOSE4x4B 0, 1, 2, 3, 4
%if mmsize == 16 ; sse2
add r3, r1 ; change from r4*8*stride to r0+8*stride
WRITE_4x4D 0, 1, 2, 3, r0, r4, r3, r1, r2, 16
%ifidn %1, sse4
inc r4
%endif
WRITE_8W m6, r4, r0, r1, r2
lea r4, [r3+r1+1]
%ifidn %1, sse4
inc r3
%endif
WRITE_8W m4, r3, r4, r1, r2
%else ; mmx/mmxext
WRITE_4x2D 0, 1, 2, 3, r0, r4, r1, r2
WRITE_2x4W m6, m4, r4, r0, r1, r2
%endif
%endif
@ -1513,20 +1584,12 @@ cglobal vp8_%2_loop_filter_simple_%1, 3, %3
%ifidn %2, v
add r0, 8 ; advance 8 cols = pixels
%else ; h
lea r0, [r0+r2*8] ; advance 8 rows = lines
lea r0, [r0+r2*8-1] ; advance 8 rows = lines
%endif
dec r3
jg .next8px
%ifidn %2, v
REP_RET
%else ; h
mov rsp, r5 ; restore stack pointer
RET
%endif
%else ; sse2
%ifidn %2, h
mov rsp, r5 ; restore stack pointer
%endif
RET
%endif
%endmacro
@ -1534,17 +1597,20 @@ cglobal vp8_%2_loop_filter_simple_%1, 3, %3
INIT_MMX
%define SPLATB_REG SPLATB_REG_MMX
SIMPLE_LOOPFILTER mmx, v, 4
SIMPLE_LOOPFILTER mmx, h, 6
SIMPLE_LOOPFILTER mmx, h, 5
%define SPLATB_REG SPLATB_REG_MMXEXT
SIMPLE_LOOPFILTER mmxext, v, 4
SIMPLE_LOOPFILTER mmxext, h, 6
SIMPLE_LOOPFILTER mmxext, h, 5
INIT_XMM
%define SPLATB_REG SPLATB_REG_SSE2
%define WRITE_8W WRITE_8W_SSE2
SIMPLE_LOOPFILTER sse2, v, 3
SIMPLE_LOOPFILTER sse2, h, 6
SIMPLE_LOOPFILTER sse2, h, 5
%define SPLATB_REG SPLATB_REG_SSSE3
SIMPLE_LOOPFILTER ssse3, v, 3
SIMPLE_LOOPFILTER ssse3, h, 6
SIMPLE_LOOPFILTER ssse3, h, 5
%define WRITE_8W WRITE_8W_SSE4
SIMPLE_LOOPFILTER sse4, h, 5
;-----------------------------------------------------------------------------
; void vp8_h/v_loop_filter<size>_inner_<opt>(uint8_t *dst, [uint8_t *v,] int stride,
@ -2075,81 +2141,6 @@ INNER_LOOPFILTER ssse3, h, 6, 8, 13
; int flimE, int flimI, int hev_thr);
;-----------------------------------------------------------------------------
; write 4 or 8 words in the mmx/xmm registers as 8 lines
; 1 and 2 are the registers to write, this can be the same (for SSE2)
; for pre-SSE4:
; 3 is a general-purpose register that we will clobber
; for SSE4:
; 3 is a pointer to the destination's 5th line
; 4 is a pointer to the destination's 4th line
; 5/6 is -stride and +stride
%macro WRITE_2x4W 6
movd %3, %1
punpckhdq %1, %1
mov [%4+%5*4], %3w
shr %3, 16
add %4, %6
mov [%4+%5*4], %3w
movd %3, %1
add %4, %5
mov [%4+%5*2], %3w
shr %3, 16
mov [%4+%5 ], %3w
movd %3, %2
punpckhdq %2, %2
mov [%4 ], %3w
shr %3, 16
mov [%4+%6 ], %3w
movd %3, %2
add %4, %6
mov [%4+%6 ], %3w
shr %3, 16
mov [%4+%6*2], %3w
add %4, %5
%endmacro
%macro WRITE_8W_SSE2 5
movd %2, %1
psrldq %1, 4
mov [%3+%4*4], %2w
shr %2, 16
add %3, %5
mov [%3+%4*4], %2w
movd %2, %1
psrldq %1, 4
add %3, %4
mov [%3+%4*2], %2w
shr %2, 16
mov [%3+%4 ], %2w
movd %2, %1
psrldq %1, 4
mov [%3 ], %2w
shr %2, 16
mov [%3+%5 ], %2w
movd %2, %1
add %3, %5
mov [%3+%5 ], %2w
shr %2, 16
mov [%3+%5*2], %2w
%endmacro
%macro WRITE_8W_SSE4 5
pextrw [%3+%4*4], %1, 0
pextrw [%2+%4*4], %1, 1
pextrw [%3+%4*2], %1, 2
pextrw [%3+%4 ], %1, 3
pextrw [%3 ], %1, 4
pextrw [%2 ], %1, 5
pextrw [%2+%5 ], %1, 6
pextrw [%2+%5*2], %1, 7
%endmacro
%macro MBEDGE_LOOPFILTER 5
%if %4 == 8 ; chroma
cglobal vp8_%2_loop_filter8uv_mbedge_%1, 6, %3, %5

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