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lavr: x86: optimized 2-channel fltp to s16 conversion

This commit is contained in:
Justin Ruggles 2012-05-02 15:50:46 -04:00
parent 90cc27f813
commit a58a013980
2 changed files with 52 additions and 0 deletions
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43
libavresample/x86/audio_convert.asm
View File

@ -32,6 +32,7 @@ pf_s16_inv_scale: times 4 dd 0x38000000
pf_s16_scale: times 4 dd 0x47000000
pb_shuf_unpack_even: db -1, -1, 0, 1, -1, -1, 2, 3, -1, -1, 8, 9, -1, -1, 10, 11
pb_shuf_unpack_odd: db -1, -1, 4, 5, -1, -1, 6, 7, -1, -1, 12, 13, -1, -1, 14, 15
pb_interleave_words: SHUFFLE_MASK_W 0, 4, 1, 5, 2, 6, 3, 7
SECTION_TEXT
@ -538,6 +539,48 @@ INIT_XMM avx
CONV_S16P_TO_FLT_6CH
%endif
;------------------------------------------------------------------------------
; void ff_conv_fltp_to_s16_2ch(int16_t *dst, float *const *src, int len,
; int channels);
;------------------------------------------------------------------------------
%macro CONV_FLTP_TO_S16_2CH 0
cglobal conv_fltp_to_s16_2ch, 3,4,3, dst, src0, len, src1
lea lenq, [4*lend]
mov src1q, [src0q+gprsize]
mov src0q, [src0q ]
add dstq, lenq
add src0q, lenq
add src1q, lenq
neg lenq
mova m2, [pf_s16_scale]
%if cpuflag(ssse3)
mova m3, [pb_interleave_words]
%endif
.loop:
mulps m0, m2, [src0q+lenq] ; m0 = 0, 2, 4, 6
mulps m1, m2, [src1q+lenq] ; m1 = 1, 3, 5, 7
cvtps2dq m0, m0
cvtps2dq m1, m1
%if cpuflag(ssse3)
packssdw m0, m1 ; m0 = 0, 2, 4, 6, 1, 3, 5, 7
pshufb m0, m3 ; m0 = 0, 1, 2, 3, 4, 5, 6, 7
%else
packssdw m0, m0 ; m0 = 0, 2, 4, 6, x, x, x, x
packssdw m1, m1 ; m1 = 1, 3, 5, 7, x, x, x, x
punpcklwd m0, m1 ; m0 = 0, 1, 2, 3, 4, 5, 6, 7
%endif
mova [dstq+lenq], m0
add lenq, mmsize
jl .loop
REP_RET
%endmacro
INIT_XMM sse2
CONV_FLTP_TO_S16_2CH
INIT_XMM ssse3
CONV_FLTP_TO_S16_2CH
;-----------------------------------------------------------------------------
; 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

@ -66,6 +66,11 @@ extern void ff_conv_s16p_to_flt_6ch_ssse3(float *dst, int16_t *const *src,
extern void ff_conv_s16p_to_flt_6ch_avx (float *dst, int16_t *const *src,
int len, int channels);
extern void ff_conv_fltp_to_s16_2ch_sse2 (int16_t *dst, float *const *src,
int len, int channels);
extern void ff_conv_fltp_to_s16_2ch_ssse3(int16_t *dst, float *const *src,
int len, int channels);
extern void ff_conv_fltp_to_flt_6ch_mmx (float *dst, float *const *src, int len,
int channels);
extern void ff_conv_fltp_to_flt_6ch_sse4(float *dst, float *const *src, int len,
@ -110,10 +115,14 @@ av_cold void ff_audio_convert_init_x86(AudioConvert *ac)
2, 16, 8, "SSE2", ff_conv_s16p_to_flt_2ch_sse2);
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16P,
6, 16, 4, "SSE2", ff_conv_s16p_to_flt_6ch_sse2);
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLTP,
2, 16, 4, "SSE2", ff_conv_fltp_to_s16_2ch_sse2);
}
if (mm_flags & AV_CPU_FLAG_SSSE3 && HAVE_SSE) {
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16P,
6, 16, 4, "SSSE3", ff_conv_s16p_to_flt_6ch_ssse3);
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLTP,
2, 16, 4, "SSSE3", ff_conv_fltp_to_s16_2ch_ssse3);
}
if (mm_flags & AV_CPU_FLAG_SSE4 && HAVE_SSE) {
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16,