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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2011-10-09 19:12:09 -0400 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2011-10-21 10:13:05 -0400 |
| commit | 708ab7dd69d5c98221882a8086f68f1bb02a44a3 (patch) | |
| tree | 99a0803e811437c9cb54de10947f695a943963d2 /libavcodec/x86/fmtconvert.asm | |
| parent | 45add995de6a1458cd8095abb302f9a7cbd3e3ee (diff) | |
| download | ffmpeg-708ab7dd69d5c98221882a8086f68f1bb02a44a3.tar.gz | |
fmtconvert: port float_to_int16() x86 inline asm to yasm
Diffstat (limited to 'libavcodec/x86/fmtconvert.asm')
| -rw-r--r-- | libavcodec/x86/fmtconvert.asm | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/libavcodec/x86/fmtconvert.asm b/libavcodec/x86/fmtconvert.asm index efab87d570..d314a4e14e 100644 --- a/libavcodec/x86/fmtconvert.asm +++ b/libavcodec/x86/fmtconvert.asm @@ -24,6 +24,48 @@ SECTION_TEXT +;------------------------------------------------------------------------------ +; void ff_float_to_int16(int16_t *dst, const float *src, long len); +;------------------------------------------------------------------------------ +%macro FLOAT_TO_INT16 2 +cglobal float_to_int16_%1, 3,3,%2, dst, src, len + add lenq, lenq + lea srcq, [srcq+2*lenq] + add dstq, lenq + neg lenq +.loop: +%ifidn %1, sse2 + cvtps2dq m0, [srcq+2*lenq ] + cvtps2dq m1, [srcq+2*lenq+16] + packssdw m0, m1 + mova [dstq+lenq], m0 +%else + cvtps2pi m0, [srcq+2*lenq ] + cvtps2pi m1, [srcq+2*lenq+ 8] + cvtps2pi m2, [srcq+2*lenq+16] + cvtps2pi m3, [srcq+2*lenq+24] + packssdw m0, m1 + packssdw m2, m3 + mova [dstq+lenq ], m0 + mova [dstq+lenq+8], m2 +%endif + add lenq, 16 + js .loop +%ifnidn %1, sse2 + emms +%endif + REP_RET +%endmacro + +INIT_XMM +FLOAT_TO_INT16 sse2, 2 +INIT_MMX +FLOAT_TO_INT16 sse, 0 +%define cvtps2pi pf2id +FLOAT_TO_INT16 3dnow, 0 +%undef cvtps2pi + + %macro PSWAPD_SSE 2 pshufw %1, %2, 0x4e %endmacro |