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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2012-05-02 18:21:26 -0400 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2012-08-23 20:10:57 -0400 |
| commit | 31d0d7181d26a3c3324f604e8b5b7548b59a2091 (patch) | |
| tree | 3ce875ad338438aad37f94eb0291b7af8e667364 /libavresample/x86/audio_convert.asm | |
| parent | 6092dafb5a542a3014f9ae7f692085f0e1027e57 (diff) | |
| download | ffmpeg-31d0d7181d26a3c3324f604e8b5b7548b59a2091.tar.gz | |
lavr: x86: optimized 2-channel flt to s16p conversion
Diffstat (limited to 'libavresample/x86/audio_convert.asm')
| -rw-r--r-- | libavresample/x86/audio_convert.asm | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/libavresample/x86/audio_convert.asm b/libavresample/x86/audio_convert.asm index 12bd577714..730f16af27 100644 --- a/libavresample/x86/audio_convert.asm +++ b/libavresample/x86/audio_convert.asm @@ -1045,3 +1045,49 @@ CONV_S16_TO_FLTP_6CH INIT_XMM avx CONV_S16_TO_FLTP_6CH %endif + +;------------------------------------------------------------------------------ +; void ff_conv_flt_to_s16p_2ch(int16_t *const *dst, float *src, int len, +; int channels); +;------------------------------------------------------------------------------ + +%macro CONV_FLT_TO_S16P_2CH 0 +cglobal conv_flt_to_s16p_2ch, 3,4,6, dst0, src, len, dst1 + lea lenq, [2*lend] + mov dst1q, [dst0q+gprsize] + mov dst0q, [dst0q ] + lea srcq, [srcq+4*lenq] + add dst0q, lenq + add dst1q, lenq + neg lenq + mova m5, [pf_s16_scale] +.loop: + mova m0, [srcq+4*lenq ] + mova m1, [srcq+4*lenq+ mmsize] + mova m2, [srcq+4*lenq+2*mmsize] + mova m3, [srcq+4*lenq+3*mmsize] + DEINT2_PS 0, 1, 4 + DEINT2_PS 2, 3, 4 + mulps m0, m0, m5 + mulps m1, m1, m5 + mulps m2, m2, m5 + mulps m3, m3, m5 + cvtps2dq m0, m0 + cvtps2dq m1, m1 + cvtps2dq m2, m2 + cvtps2dq m3, m3 + packssdw m0, m2 + packssdw m1, m3 + mova [dst0q+lenq], m0 + mova [dst1q+lenq], m1 + add lenq, mmsize + jl .loop + REP_RET +%endmacro + +INIT_XMM sse2 +CONV_FLT_TO_S16P_2CH +%if HAVE_AVX +INIT_XMM avx +CONV_FLT_TO_S16P_2CH +%endif |