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lavr: Add x86-optimized functions for s32 to flt conversion

This commit is contained in:
Justin Ruggles 2012-04-23 18:29:58 -04:00
parent 5904f25b9f
commit 97ce1ba867
2 changed files with 46 additions and 0 deletions
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37
libavresample/x86/audio_convert.asm
View File

@ -26,6 +26,7 @@
SECTION_RODATA 32
pf_s32_inv_scale: times 8 dd 0x30000000
pf_s16_inv_scale: times 4 dd 0x38000000
SECTION_TEXT
@ -121,6 +122,42 @@ CONV_S32_TO_S16
INIT_XMM sse2
CONV_S32_TO_S16
;------------------------------------------------------------------------------
; void ff_conv_s32_to_flt(float *dst, const int32_t *src, int len);
;------------------------------------------------------------------------------
%macro CONV_S32_TO_FLT 0
cglobal conv_s32_to_flt, 3,3,3, dst, src, len
lea lenq, [4*lend]
add srcq, lenq
add dstq, lenq
neg lenq
mova m0, [pf_s32_inv_scale]
ALIGN 16
.loop:
cvtdq2ps m1, [srcq+lenq ]
cvtdq2ps m2, [srcq+lenq+mmsize]
mulps m1, m1, m0
mulps m2, m2, m0
mova [dstq+lenq ], m1
mova [dstq+lenq+mmsize], m2
add lenq, mmsize*2
jl .loop
%if mmsize == 32
vzeroupper
RET
%else
REP_RET
%endif
%endmacro
INIT_XMM sse2
CONV_S32_TO_FLT
%if HAVE_AVX
INIT_YMM avx
CONV_S32_TO_FLT
%endif
;-----------------------------------------------------------------------------
; void ff_conv_fltp_to_flt_6ch(float *dst, float *const *src, int len,
; int channels);

9
libavresample/x86/audio_convert_init.c
View File

@ -30,6 +30,9 @@ extern void ff_conv_s16_to_flt_sse4(float *dst, const int16_t *src, int len);
extern void ff_conv_s32_to_s16_mmx (int16_t *dst, const int32_t *src, int len);
extern void ff_conv_s32_to_s16_sse2(int16_t *dst, const int32_t *src, int len);
extern void ff_conv_s32_to_flt_sse2(float *dst, const int32_t *src, int len);
extern void ff_conv_s32_to_flt_avx (float *dst, const int32_t *src, int len);
extern void ff_conv_fltp_to_flt_6ch_mmx (float *dst, float *const *src, int len);
extern void ff_conv_fltp_to_flt_6ch_sse4(float *dst, float *const *src, int len);
extern void ff_conv_fltp_to_flt_6ch_avx (float *dst, float *const *src, int len);
@ -62,10 +65,16 @@ av_cold void ff_audio_convert_init_x86(AudioConvert *ac)
0, 16, 8, "SSE2", ff_conv_s16_to_s32_sse2);
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16,
0, 16, 8, "SSE2", ff_conv_s16_to_flt_sse2);
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32,
0, 16, 8, "SSE2", ff_conv_s32_to_flt_sse2);
}
if (mm_flags & AV_CPU_FLAG_SSE4 && HAVE_SSE) {
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16,
0, 16, 8, "SSE4", ff_conv_s16_to_flt_sse4);
}
if (mm_flags & AV_CPU_FLAG_AVX && HAVE_AVX) {
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32,
0, 32, 16, "AVX", ff_conv_s32_to_flt_avx);
}
#endif
}