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x86/fmtconvert: add ff_int32_to_float_fmul_array8_{sse,sse2}

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About two times faster than the c wrapper.

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2014-09-26 20:46:41 -03:00
parent b7a5538870
commit 26cd7b1e1a
2 changed files with 44 additions and 0 deletions
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38
libavcodec/x86/fmtconvert.asm
View File

@ -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);

6
libavcodec/x86/fmtconvert_init.c
View File

@ -32,6 +32,10 @@
void ff_int32_to_float_fmul_scalar_sse (float *dst, const int32_t *src, float mul, int len);
void ff_int32_to_float_fmul_scalar_sse2(float *dst, const int32_t *src, float mul, int len);
void ff_int32_to_float_fmul_array8_sse (FmtConvertContext *c, float *dst, const int32_t *src,
const float *mul, int len);
void ff_int32_to_float_fmul_array8_sse2(FmtConvertContext *c, float *dst, const int32_t *src,
const float *mul, int len);
void ff_float_to_int16_3dnow(int16_t *dst, const float *src, long len);
void ff_float_to_int16_sse (int16_t *dst, const float *src, long len);
@ -134,12 +138,14 @@ av_cold void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx
}
if (EXTERNAL_SSE(cpu_flags)) {
c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse;
c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_sse;
c->float_to_int16 = ff_float_to_int16_sse;
c->float_to_int16_interleave = float_to_int16_interleave_sse;
c->float_interleave = float_interleave_sse;
}
if (EXTERNAL_SSE2(cpu_flags)) {
c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse2;
c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_sse2;
c->float_to_int16 = ff_float_to_int16_sse2;
c->float_to_int16_interleave = float_to_int16_interleave_sse2;
}