diff options
| author | Justin Ruggles <justin.ruggles@gmail.com> | 2012-05-02 17:57:56 -0400 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2012-08-23 20:10:57 -0400 |
| commit | 91851a7b37f4912bf8927e4ec9817ea9acd548f0 (patch) | |
| tree | 0b552795779d5e66a903c634e965d6c8aa9ac8bc /libavresample/x86/audio_convert.asm | |
| parent | 205ace88435386126ed9f590737d24cc2bf93507 (diff) | |
lavr: x86: optimized 2-channel s16 to fltp conversion
Diffstat (limited to 'libavresample/x86/audio_convert.asm')
| -rw-r--r-- | libavresample/x86/audio_convert.asm | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/libavresample/x86/audio_convert.asm b/libavresample/x86/audio_convert.asm index e7d8fcad66..9f8a13c4f3 100644 --- a/libavresample/x86/audio_convert.asm +++ b/libavresample/x86/audio_convert.asm @@ -34,6 +34,7 @@ pb_shuf_unpack_even: db -1, -1, 0, 1, -1, -1, 2, 3, -1, -1, 8, 9, -1, 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 pb_deinterleave_words: SHUFFLE_MASK_W 0, 2, 4, 6, 1, 3, 5, 7 +pw_zero_even: times 4 dw 0x0000, 0xffff SECTION_TEXT @@ -923,3 +924,41 @@ CONV_S16_TO_S16P_6CH INIT_XMM avx CONV_S16_TO_S16P_6CH %endif + +;------------------------------------------------------------------------------ +; void ff_conv_s16_to_fltp_2ch(float *const *dst, int16_t *src, int len, +; int channels); +;------------------------------------------------------------------------------ + +%macro CONV_S16_TO_FLTP_2CH 0 +cglobal conv_s16_to_fltp_2ch, 3,4,5, dst0, src, len, dst1 + lea lenq, [4*lend] + mov dst1q, [dst0q+gprsize] + mov dst0q, [dst0q ] + add srcq, lenq + add dst0q, lenq + add dst1q, lenq + neg lenq + mova m3, [pf_s32_inv_scale] + mova m4, [pw_zero_even] +.loop: + mova m1, [srcq+lenq] + pslld m0, m1, 16 + pand m1, m4 + cvtdq2ps m0, m0 + cvtdq2ps m1, m1 + mulps m0, m0, m3 + mulps m1, m1, m3 + mova [dst0q+lenq], m0 + mova [dst1q+lenq], m1 + add lenq, mmsize + jl .loop + REP_RET +%endmacro + +INIT_XMM sse2 +CONV_S16_TO_FLTP_2CH +%if HAVE_AVX +INIT_XMM avx +CONV_S16_TO_FLTP_2CH +%endif |