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h264: convert loop filter strength dsp function to yasm. 

This completes the conversion of h264dsp to yasm; note that h264 also
uses some dsputil functions, most notably qpel. Performance-wise, the
yasm-version is ~10 cycles faster (182->172) on x86-64, and ~8 cycles
faster (201->193) on x86-32.
This commit is contained in:
Ronald S. Bultje 2012-07-28 10:11:00 -07:00
parent 0177b7d23a
commit b829b4ce29
2 changed files with 175 additions and 155 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

168
libavcodec/x86/h264_deblock.asm
View File

@ -27,6 +27,10 @@
%include "x86inc.asm"
%include "x86util.asm"
SECTION_RODATA
pb_3_1: times 4 db 3, 1
SECTION .text
cextern pb_0
@ -911,3 +915,167 @@ ff_chroma_intra_body_mmx2:
paddb m1, m5
paddb m2, m6
ret
;-----------------------------------------------------------------------------
; void h264_loop_filter_strength(int16_t bs[2][4][4], uint8_t nnz[40],
; int8_t ref[2][40], int16_t mv[2][40][2],
; int bidir, int edges, int step,
; int mask_mv0, int mask_mv1, int field);
;
; bidir is 0 or 1
; edges is 1 or 4
; step is 1 or 2
; mask_mv0 is 0 or 3
; mask_mv1 is 0 or 1
; field is 0 or 1
;-----------------------------------------------------------------------------
%macro loop_filter_strength_iteration 7 ; edges, step, mask_mv,
; dir, d_idx, mask_dir, bidir
%define edgesd %1
%define stepd %2
%define mask_mvd %3
%define dir %4
%define d_idx %5
%define mask_dir %6
%define bidir %7
xor b_idxd, b_idxd ; for (b_idx = 0; b_idx < edges; b_idx += step)
%%.b_idx_loop:
%if mask_dir == 0
pxor m0, m0
%endif
test b_idxd, dword mask_mvd
jnz %%.skip_loop_iter ; if (!(b_idx & mask_mv))
%if bidir == 1
movd m2, [refq+b_idxq+d_idx+12] ; { ref0[bn] }
punpckldq m2, [refq+b_idxq+d_idx+52] ; { ref0[bn], ref1[bn] }
pshufw m0, [refq+b_idxq+12], 0x44 ; { ref0[b], ref0[b] }
pshufw m1, [refq+b_idxq+52], 0x44 ; { ref1[b], ref1[b] }
pshufw m3, m2, 0x4E ; { ref1[bn], ref0[bn] }
psubb m0, m2 ; { ref0[b] != ref0[bn],
; ref0[b] != ref1[bn] }
psubb m1, m3 ; { ref1[b] != ref1[bn],
; ref1[b] != ref0[bn] }
por m0, m1
mova m1, [mvq+b_idxq*4+(d_idx+12)*4]
mova m2, [mvq+b_idxq*4+(d_idx+12)*4+mmsize]
mova m3, m1
mova m4, m2
psubw m1, [mvq+b_idxq*4+12*4]
psubw m2, [mvq+b_idxq*4+12*4+mmsize]
psubw m3, [mvq+b_idxq*4+52*4]
psubw m4, [mvq+b_idxq*4+52*4+mmsize]
packsswb m1, m2
packsswb m3, m4
paddb m1, m6
paddb m3, m6
psubusb m1, m5 ; abs(mv[b] - mv[bn]) >= limit
psubusb m3, m5
packsswb m1, m3
por m0, m1
mova m1, [mvq+b_idxq*4+(d_idx+52)*4]
mova m2, [mvq+b_idxq*4+(d_idx+52)*4+mmsize]
mova m3, m1
mova m4, m2
psubw m1, [mvq+b_idxq*4+12*4]
psubw m2, [mvq+b_idxq*4+12*4+mmsize]
psubw m3, [mvq+b_idxq*4+52*4]
psubw m4, [mvq+b_idxq*4+52*4+mmsize]
packsswb m1, m2
packsswb m3, m4
paddb m1, m6
paddb m3, m6
psubusb m1, m5 ; abs(mv[b] - mv[bn]) >= limit
psubusb m3, m5
packsswb m1, m3
pshufw m1, m1, 0x4E
por m0, m1
pshufw m1, m0, 0x4E
pminub m0, m1
%else ; bidir == 0
movd m0, [refq+b_idxq+12]
psubb m0, [refq+b_idxq+d_idx+12] ; ref[b] != ref[bn]
mova m1, [mvq+b_idxq*4+12*4]
mova m2, [mvq+b_idxq*4+12*4+mmsize]
psubw m1, [mvq+b_idxq*4+(d_idx+12)*4]
psubw m2, [mvq+b_idxq*4+(d_idx+12)*4+mmsize]
packsswb m1, m2
paddb m1, m6
psubusb m1, m5 ; abs(mv[b] - mv[bn]) >= limit
packsswb m1, m1
por m0, m1
%endif ; bidir == 1/0
%%.skip_loop_iter:
movd m1, [nnzq+b_idxq+12]
por m1, [nnzq+b_idxq+d_idx+12] ; nnz[b] || nnz[bn]
pminub m1, m7
pminub m0, m7
psllw m1, 1
pxor m2, m2
pmaxub m1, m0
punpcklbw m1, m2
movq [bsq+b_idxq+32*dir], m1
add b_idxd, dword stepd
cmp b_idxd, dword edgesd
jl %%.b_idx_loop
%endmacro
INIT_MMX mmx2
cglobal h264_loop_filter_strength, 9, 9, 0, bs, nnz, ref, mv, bidir, edges, \
step, mask_mv0, mask_mv1, field
%define b_idxq bidirq
%define b_idxd bidird
cmp dword fieldm, 0
mova m7, [pb_1]
mova m5, [pb_3]
je .nofield
mova m5, [pb_3_1]
.nofield:
mova m6, m5
paddb m5, m5
shl dword stepd, 3
shl dword edgesd, 3
%if ARCH_X86_32
%define mask_mv0d mask_mv0m
%define mask_mv1d mask_mv1m
%endif
shl dword mask_mv1d, 3
shl dword mask_mv0d, 3
cmp dword bidird, 0
jne .bidir
loop_filter_strength_iteration edgesd, stepd, mask_mv1d, 1, -8, 0, 0
loop_filter_strength_iteration 32, 8, mask_mv0d, 0, -1, -1, 0
mova m0, [bsq+mmsize*0]
mova m1, [bsq+mmsize*1]
mova m2, [bsq+mmsize*2]
mova m3, [bsq+mmsize*3]
TRANSPOSE4x4W 0, 1, 2, 3, 4
mova [bsq+mmsize*0], m0
mova [bsq+mmsize*1], m1
mova [bsq+mmsize*2], m2
mova [bsq+mmsize*3], m3
RET
.bidir:
loop_filter_strength_iteration edgesd, stepd, mask_mv1d, 1, -8, 0, 1
loop_filter_strength_iteration 32, 8, mask_mv0d, 0, -1, -1, 1
mova m0, [bsq+mmsize*0]
mova m1, [bsq+mmsize*1]
mova m2, [bsq+mmsize*2]
mova m3, [bsq+mmsize*3]
TRANSPOSE4x4W 0, 1, 2, 3, 4
mova [bsq+mmsize*0], m0
mova [bsq+mmsize*1], m1
mova [bsq+mmsize*2], m2
mova [bsq+mmsize*3], m3
RET

162
libavcodec/x86/h264dsp_mmx.c
View File

@ -88,158 +88,10 @@ void ff_h264_luma_dc_dequant_idct_sse2(DCTELEM *output, DCTELEM *input, int qmul
/***********************************/
/* deblocking */
#define h264_loop_filter_strength_iteration_mmx2(bS, nz, ref, mv, bidir, edges, step, mask_mv, dir, d_idx, mask_dir) \
do { \
x86_reg b_idx; \
mask_mv <<= 3; \
for( b_idx=0; b_idx<edges; b_idx+=step ) { \
if (!mask_dir) \
__asm__ volatile( \
"pxor %%mm0, %%mm0 \n\t" \
:: \
); \
if(!(mask_mv & b_idx)) { \
if(bidir) { \
__asm__ volatile( \
"movd %a3(%0,%2), %%mm2 \n" \
"punpckldq %a4(%0,%2), %%mm2 \n" /* { ref0[bn], ref1[bn] } */ \
"pshufw $0x44, 12(%0,%2), %%mm0 \n" /* { ref0[b], ref0[b] } */ \
"pshufw $0x44, 52(%0,%2), %%mm1 \n" /* { ref1[b], ref1[b] } */ \
"pshufw $0x4E, %%mm2, %%mm3 \n" \
"psubb %%mm2, %%mm0 \n" /* { ref0[b]!=ref0[bn], ref0[b]!=ref1[bn] } */ \
"psubb %%mm3, %%mm1 \n" /* { ref1[b]!=ref1[bn], ref1[b]!=ref0[bn] } */ \
\
"por %%mm1, %%mm0 \n" \
"movq %a5(%1,%2,4), %%mm1 \n" \
"movq %a6(%1,%2,4), %%mm2 \n" \
"movq %%mm1, %%mm3 \n" \
"movq %%mm2, %%mm4 \n" \
"psubw 48(%1,%2,4), %%mm1 \n" \
"psubw 56(%1,%2,4), %%mm2 \n" \
"psubw 208(%1,%2,4), %%mm3 \n" \
"psubw 216(%1,%2,4), %%mm4 \n" \
"packsswb %%mm2, %%mm1 \n" \
"packsswb %%mm4, %%mm3 \n" \
"paddb %%mm6, %%mm1 \n" \
"paddb %%mm6, %%mm3 \n" \
"psubusb %%mm5, %%mm1 \n" /* abs(mv[b] - mv[bn]) >= limit */ \
"psubusb %%mm5, %%mm3 \n" \
"packsswb %%mm3, %%mm1 \n" \
\
"por %%mm1, %%mm0 \n" \
"movq %a7(%1,%2,4), %%mm1 \n" \
"movq %a8(%1,%2,4), %%mm2 \n" \
"movq %%mm1, %%mm3 \n" \
"movq %%mm2, %%mm4 \n" \
"psubw 48(%1,%2,4), %%mm1 \n" \
"psubw 56(%1,%2,4), %%mm2 \n" \
"psubw 208(%1,%2,4), %%mm3 \n" \
"psubw 216(%1,%2,4), %%mm4 \n" \
"packsswb %%mm2, %%mm1 \n" \
"packsswb %%mm4, %%mm3 \n" \
"paddb %%mm6, %%mm1 \n" \
"paddb %%mm6, %%mm3 \n" \
"psubusb %%mm5, %%mm1 \n" /* abs(mv[b] - mv[bn]) >= limit */ \
"psubusb %%mm5, %%mm3 \n" \
"packsswb %%mm3, %%mm1 \n" \
\
"pshufw $0x4E, %%mm1, %%mm1 \n" \
"por %%mm1, %%mm0 \n" \
"pshufw $0x4E, %%mm0, %%mm1 \n" \
"pminub %%mm1, %%mm0 \n" \
::"r"(ref), \
"r"(mv), \
"r"(b_idx), \
"i"(d_idx+12), \
"i"(d_idx+52), \
"i"(d_idx*4+48), \
"i"(d_idx*4+56), \
"i"(d_idx*4+208), \
"i"(d_idx*4+216) \
); \
} else { \
__asm__ volatile( \
"movd 12(%0,%2), %%mm0 \n" \
"psubb %a3(%0,%2), %%mm0 \n" /* ref[b] != ref[bn] */ \
"movq 48(%1,%2,4), %%mm1 \n" \
"movq 56(%1,%2,4), %%mm2 \n" \
"psubw %a4(%1,%2,4), %%mm1 \n" \
"psubw %a5(%1,%2,4), %%mm2 \n" \
"packsswb %%mm2, %%mm1 \n" \
"paddb %%mm6, %%mm1 \n" \
"psubusb %%mm5, %%mm1 \n" /* abs(mv[b] - mv[bn]) >= limit */ \
"packsswb %%mm1, %%mm1 \n" \
"por %%mm1, %%mm0 \n" \
::"r"(ref), \
"r"(mv), \
"r"(b_idx), \
"i"(d_idx+12), \
"i"(d_idx*4+48), \
"i"(d_idx*4+56) \
); \
} \
} \
__asm__ volatile( \
"movd 12(%0,%1), %%mm1 \n" \
"por %a2(%0,%1), %%mm1 \n" /* nnz[b] || nnz[bn] */ \
::"r"(nnz), \
"r"(b_idx), \
"i"(d_idx+12) \
); \
__asm__ volatile( \
"pminub %%mm7, %%mm1 \n" \
"pminub %%mm7, %%mm0 \n" \
"psllw $1, %%mm1 \n" \
"pxor %%mm2, %%mm2 \n" \
"pmaxub %%mm0, %%mm1 \n" \
"punpcklbw %%mm2, %%mm1 \n" \
"movq %%mm1, %a1(%0,%2) \n" \
::"r"(bS), \
"i"(32*dir), \
"r"(b_idx) \
:"memory" \
); \
} \
} while (0)
static void h264_loop_filter_strength_mmx2( int16_t bS[2][4][4], uint8_t nnz[40], int8_t ref[2][40], int16_t mv[2][40][2],
int bidir, int edges, int step, int mask_mv0, int mask_mv1, int field ) {
__asm__ volatile(
"movq %0, %%mm7 \n"
"movq %1, %%mm6 \n"
::"m"(ff_pb_1), "m"(ff_pb_3)
);
if(field)
__asm__ volatile(
"movq %0, %%mm6 \n"
::"m"(ff_pb_3_1)
);
__asm__ volatile(
"movq %%mm6, %%mm5 \n"
"paddb %%mm5, %%mm5 \n"
:);
// could do a special case for dir==0 && edges==1, but it only reduces the
// average filter time by 1.2%
step <<= 3;
edges <<= 3;
h264_loop_filter_strength_iteration_mmx2(bS, nnz, ref, mv, bidir, edges, step, mask_mv1, 1, -8, 0);
h264_loop_filter_strength_iteration_mmx2(bS, nnz, ref, mv, bidir, 32, 8, mask_mv0, 0, -1, -1);
__asm__ volatile(
"movq (%0), %%mm0 \n\t"
"movq 8(%0), %%mm1 \n\t"
"movq 16(%0), %%mm2 \n\t"
"movq 24(%0), %%mm3 \n\t"
TRANSPOSE4(%%mm0, %%mm1, %%mm2, %%mm3, %%mm4)
"movq %%mm0, (%0) \n\t"
"movq %%mm3, 8(%0) \n\t"
"movq %%mm4, 16(%0) \n\t"
"movq %%mm2, 24(%0) \n\t"
::"r"(bS[0])
:"memory"
);
}
void ff_h264_loop_filter_strength_mmx2(int16_t bS[2][4][4], uint8_t nnz[40],
int8_t ref[2][40], int16_t mv[2][40][2],
int bidir, int edges, int step,
int mask_mv0, int mask_mv1, int field);
#define LF_FUNC(DIR, TYPE, DEPTH, OPT) \
void ff_deblock_ ## DIR ## _ ## TYPE ## _ ## DEPTH ## _ ## OPT (uint8_t *pix, int stride, \
@ -344,12 +196,12 @@ void ff_h264dsp_init_x86(H264DSPContext *c, const int bit_depth, const int chrom
{
int mm_flags = av_get_cpu_flags();
#if HAVE_YASM
if (chroma_format_idc == 1 && mm_flags & AV_CPU_FLAG_MMX2) {
c->h264_loop_filter_strength= h264_loop_filter_strength_mmx2;
c->h264_loop_filter_strength = ff_h264_loop_filter_strength_mmx2;
}
if (bit_depth == 8) {
#if HAVE_YASM
if (mm_flags & AV_CPU_FLAG_MMX) {
c->h264_idct_dc_add =
c->h264_idct_add = ff_h264_idct_add_8_mmx;
@ -510,6 +362,6 @@ void ff_h264dsp_init_x86(H264DSPContext *c, const int bit_depth, const int chrom
#endif /* HAVE_AVX */
}
}
#endif
}
#endif
}