diff options
| author | James Almer <jamrial@gmail.com> | 2014-09-26 20:46:41 -0300 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2014-09-26 20:48:40 -0300 |
| commit | 26cd7b1e1ad54dca688b5d62081cd79c4f56a387 (patch) | |
| tree | ff459d20a195abd07abb0eb30c7f066919c78c8f /libavcodec/x86/fmtconvert.asm | |
| parent | b7a55388706b81db2e8ec0b8b093edf9deede21e (diff) | |
x86/fmtconvert: add ff_int32_to_float_fmul_array8_{sse,sse2}
About two times faster than the c wrapper.
Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>
Diffstat (limited to 'libavcodec/x86/fmtconvert.asm')
| -rw-r--r-- | libavcodec/x86/fmtconvert.asm | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/libavcodec/x86/fmtconvert.asm b/libavcodec/x86/fmtconvert.asm index 0d3f821c9f..f42d203b1e 100644 --- a/libavcodec/x86/fmtconvert.asm +++ b/libavcodec/x86/fmtconvert.asm @@ -77,6 +77,44 @@ INT32_TO_FLOAT_FMUL_SCALAR 5 INIT_XMM sse2 INT32_TO_FLOAT_FMUL_SCALAR 3 +;------------------------------------------------------------------------------ +; void ff_int32_to_float_fmul_array8(FmtConvertContext *c, float *dst, const int32_t *src, +; const float *mul, int len); +;------------------------------------------------------------------------------ +%macro INT32_TO_FLOAT_FMUL_ARRAY8 0 +cglobal int32_to_float_fmul_array8, 5, 5, 5, c, dst, src, mul, len + shl lenq, 2 + add srcq, lenq + add dstq, lenq + neg lenq +.loop: + movss m0, [mulq] + SPLATD m0 +%if cpuflag(sse2) + cvtdq2ps m1, [srcq+lenq ] + cvtdq2ps m2, [srcq+lenq+16] +%else + cvtpi2ps m1, [srcq+lenq ] + cvtpi2ps m3, [srcq+lenq+ 8] + cvtpi2ps m2, [srcq+lenq+16] + cvtpi2ps m4, [srcq+lenq+24] + movlhps m1, m3 + movlhps m2, m4 +%endif + mulps m1, m0 + mulps m2, m0 + mova [dstq+lenq ], m1 + mova [dstq+lenq+16], m2 + add mulq, 4 + add lenq, 32 + jl .loop + REP_RET +%endmacro + +INIT_XMM sse +INT32_TO_FLOAT_FMUL_ARRAY8 +INIT_XMM sse2 +INT32_TO_FLOAT_FMUL_ARRAY8 ;------------------------------------------------------------------------------ ; void ff_float_to_int16(int16_t *dst, const float *src, long len); |