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

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This commit is contained in:
Justin Ruggles 2012-04-20 16:09:15 -04:00
parent 6c63cbfe7a
commit 4e4dd71730
2 changed files with 49 additions and 0 deletions
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42
libavresample/x86/audio_convert.asm
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@ -27,6 +27,7 @@
SECTION_RODATA 32
pf_s32_inv_scale: times 8 dd 0x30000000
pf_s32_scale: times 8 dd 0x4f000000
pf_s16_inv_scale: times 4 dd 0x38000000
pf_s16_scale: times 4 dd 0x47000000
@ -191,6 +192,47 @@ cglobal conv_flt_to_s16, 3,3,5, dst, src, len
jl .loop
REP_RET
;------------------------------------------------------------------------------
; void ff_conv_flt_to_s32(int32_t *dst, const float *src, int len);
;------------------------------------------------------------------------------
%macro CONV_FLT_TO_S32 0
cglobal conv_flt_to_s32, 3,3,5, dst, src, len
lea lenq, [lend*4]
add srcq, lenq
add dstq, lenq
neg lenq
mova m4, [pf_s32_scale]
.loop:
mulps m0, m4, [srcq+lenq ]
mulps m1, m4, [srcq+lenq+1*mmsize]
mulps m2, m4, [srcq+lenq+2*mmsize]
mulps m3, m4, [srcq+lenq+3*mmsize]
cvtps2dq m0, m0
cvtps2dq m1, m1
cvtps2dq m2, m2
cvtps2dq m3, m3
mova [dstq+lenq ], m0
mova [dstq+lenq+1*mmsize], m1
mova [dstq+lenq+2*mmsize], m2
mova [dstq+lenq+3*mmsize], m3
add lenq, mmsize*4
jl .loop
%if mmsize == 32
vzeroupper
RET
%else
REP_RET
%endif
%endmacro
INIT_XMM sse2
CONV_FLT_TO_S32
%if HAVE_AVX
INIT_YMM avx
CONV_FLT_TO_S32
%endif
;-----------------------------------------------------------------------------
; void ff_conv_fltp_to_flt_6ch(float *dst, float *const *src, int len,
; int channels);

7
libavresample/x86/audio_convert_init.c
View File

@ -35,6 +35,9 @@ extern void ff_conv_s32_to_flt_avx (float *dst, const int32_t *src, int len);
extern void ff_conv_flt_to_s16_sse2(int16_t *dst, const float *src, int len);
extern void ff_conv_flt_to_s32_sse2(int32_t *dst, const float *src, int len);
extern void ff_conv_flt_to_s32_avx (int32_t *dst, const float *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);
@ -71,6 +74,8 @@ av_cold void ff_audio_convert_init_x86(AudioConvert *ac)
0, 16, 8, "SSE2", ff_conv_s32_to_flt_sse2);
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT,
0, 16, 16, "SSE2", ff_conv_flt_to_s16_sse2);
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT,
0, 16, 16, "SSE2", ff_conv_flt_to_s32_sse2);
}
if (mm_flags & AV_CPU_FLAG_SSE4 && HAVE_SSE) {
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16,
@ -79,6 +84,8 @@ av_cold void ff_audio_convert_init_x86(AudioConvert *ac)
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);
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT,
0, 32, 32, "AVX", ff_conv_flt_to_s32_avx);
}
#endif
}