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optimizing

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Originally committed as revision 2428 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-10-24 21:57:04 +00:00
parent 1b245cc21c
commit 99200baec4
1 changed files with 60 additions and 23 deletions
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83
libavcodec/i386/fdct_mmx.c
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@ -210,64 +210,101 @@ static always_inline void fdct_col(const int16_t *in, int16_t *out, int offset)
movq_r2m(mm3, *(out + offset + 7 * 8));
}
static always_inline void fdct_row(const int16_t *in, int16_t *out, const int16_t *table, int mmx2)
static always_inline void fdct_row_mmx2(const int16_t *in, int16_t *out, const int16_t *table)
{
if(mmx2){
pshufw_m2r(*(in + 4), mm5, 0x1B);
movq_m2r(*(in + 0), mm0);
}else{
movq_r2r(mm0, mm1);
paddsw_r2r(mm5, mm0);
psubsw_r2r(mm5, mm1);
pshufw_r2r(mm1, mm5, 0x88);
pshufw_r2r(mm1, mm6, 0xDD);
pshufw_r2r(mm0, mm1, 0xDD);
pshufw_r2r(mm0, mm0, 0x88);
movq_m2r(*(table + 0), mm3);
movq_m2r(*(table + 4), mm4);
movq_m2r(*(table + 16), mm2);
movq_m2r(*(table + 20), mm7);
pmaddwd_r2r(mm0, mm3);
pmaddwd_r2r(mm1, mm4);
pmaddwd_r2r(mm5, mm2);
pmaddwd_r2r(mm6, mm7);
pmaddwd_m2r(*(table + 8), mm0);
pmaddwd_m2r(*(table + 12), mm1);
pmaddwd_m2r(*(table + 24), mm5);
pmaddwd_m2r(*(table + 28), mm6);
paddd_r2r(mm1, mm0);
paddd_r2r(mm6, mm5);
movq_m2r(*fdct_r_row, mm7);
paddd_r2r(mm7, mm3);
paddd_r2r(mm7, mm0);
paddd_r2r(mm7, mm2);
paddd_r2r(mm7, mm5);
psrad_i2r(SHIFT_FRW_ROW, mm3);
psrad_i2r(SHIFT_FRW_ROW, mm2);
psrad_i2r(SHIFT_FRW_ROW, mm0);
psrad_i2r(SHIFT_FRW_ROW, mm5);
packssdw_r2r(mm0, mm3);
packssdw_r2r(mm5, mm2);
movq_r2r(mm3, mm6);
punpcklwd_r2r(mm2, mm3);
punpckhwd_r2r(mm2, mm6);
movq_r2m(mm3, *(out + 0));
movq_r2m(mm6, *(out + 4));
}
static always_inline void fdct_row_mmx(const int16_t *in, int16_t *out, const int16_t *table)
{
movd_m2r(*(in + 6), mm5);
punpcklwd_m2r(*(in + 4), mm5);
movq_r2r(mm5, mm2);
psrlq_i2r(0x20, mm5);
movq_m2r(*(in + 0), mm0);
punpcklwd_r2r(mm2, mm5);
}
movq_r2r(mm0, mm1);
paddsw_r2r(mm5, mm0);
psubsw_r2r(mm5, mm1);
movq_r2r(mm0, mm2);
punpcklwd_r2r(mm1, mm0);
punpckhwd_r2r(mm1, mm2);
movq_r2r(mm2, mm1);
movq_r2r(mm0, mm2);
movq_r2r(mm0, mm1);
movq_m2r(*(table + 0), mm3);
punpcklwd_r2r(mm1, mm0);
punpcklwd_r2r(mm2, mm0);
movq_r2r(mm0, mm5);
punpckldq_r2r(mm0, mm0);
movq_m2r(*(table + 4), mm4);
punpckhwd_r2r(mm1, mm2);
punpckhwd_r2r(mm2, mm1);
pmaddwd_r2r(mm0, mm3);
movq_r2r(mm2, mm6);
movq_m2r(*(table + 16), mm1);
punpckldq_r2r(mm2, mm2);
pmaddwd_r2r(mm2, mm4);
movq_r2r(mm1, mm6);
movq_m2r(*(table + 16), mm2);
punpckldq_r2r(mm1, mm1);
pmaddwd_r2r(mm1, mm4);
punpckhdq_r2r(mm5, mm5);
pmaddwd_m2r(*(table + 8), mm0);
punpckhdq_r2r(mm6, mm6);
movq_m2r(*(table + 20), mm7);
pmaddwd_r2r(mm5, mm1);
pmaddwd_r2r(mm5, mm2);
paddd_m2r(*fdct_r_row, mm3);
pmaddwd_r2r(mm6, mm7);
pmaddwd_m2r(*(table + 12), mm2);
pmaddwd_m2r(*(table + 12), mm1);
paddd_r2r(mm4, mm3);
pmaddwd_m2r(*(table + 24), mm5);
pmaddwd_m2r(*(table + 28), mm6);
paddd_r2r(mm7, mm1);
paddd_r2r(mm7, mm2);
paddd_m2r(*fdct_r_row, mm0);
psrad_i2r(SHIFT_FRW_ROW, mm3);
paddd_m2r(*fdct_r_row, mm1);
paddd_r2r(mm2, mm0);
paddd_m2r(*fdct_r_row, mm2);
paddd_r2r(mm1, mm0);
paddd_m2r(*fdct_r_row, mm5);
psrad_i2r(SHIFT_FRW_ROW, mm1);
psrad_i2r(SHIFT_FRW_ROW, mm2);
paddd_r2r(mm6, mm5);
psrad_i2r(SHIFT_FRW_ROW, mm0);
psrad_i2r(SHIFT_FRW_ROW, mm5);
packssdw_r2r(mm0, mm3);
packssdw_r2r(mm5, mm1);
packssdw_r2r(mm5, mm2);
movq_r2r(mm3, mm6);
punpcklwd_r2r(mm1, mm3);
punpckhwd_r2r(mm1, mm6);
punpcklwd_r2r(mm2, mm3);
punpckhwd_r2r(mm2, mm6);
movq_r2m(mm3, *(out + 0));
movq_r2m(mm6, *(out + 4));
}
@ -288,7 +325,7 @@ void ff_fdct_mmx(int16_t *block)
table = tab_frw_01234567;
out = block;
for(i=8;i>0;i--) {
fdct_row(block1, out, table, 0);
fdct_row_mmx(block1, out, table);
block1 += 8;
table += 32;
out += 8;
@ -311,7 +348,7 @@ void ff_fdct_mmx2(int16_t *block)
table = tab_frw_01234567;
out = block;
for(i=8;i>0;i--) {
fdct_row(block1, out, table, 1);
fdct_row_mmx2(block1, out, table);
block1 += 8;
table += 32;
out += 8;