diff options
Diffstat (limited to 'libavresample/x86/audio_convert.asm')
| -rw-r--r-- | libavresample/x86/audio_convert.asm | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/libavresample/x86/audio_convert.asm b/libavresample/x86/audio_convert.asm index 53091acf99..a28198197f 100644 --- a/libavresample/x86/audio_convert.asm +++ b/libavresample/x86/audio_convert.asm @@ -28,6 +28,7 @@ SECTION_RODATA 32 pf_s32_inv_scale: times 8 dd 0x30000000 pf_s16_inv_scale: times 4 dd 0x38000000 +pf_s16_scale: times 4 dd 0x47000000 SECTION_TEXT @@ -158,6 +159,38 @@ INIT_YMM avx CONV_S32_TO_FLT %endif +;------------------------------------------------------------------------------ +; void ff_conv_flt_to_s16(int16_t *dst, const float *src, int len); +;------------------------------------------------------------------------------ + +INIT_XMM sse2 +cglobal conv_flt_to_s16, 3,3,5, dst, src, len + lea lenq, [2*lend] + lea srcq, [srcq+2*lenq] + add dstq, lenq + neg lenq + mova m4, [pf_s16_scale] +.loop: + mova m0, [srcq+2*lenq ] + mova m1, [srcq+2*lenq+1*mmsize] + mova m2, [srcq+2*lenq+2*mmsize] + mova m3, [srcq+2*lenq+3*mmsize] + mulps m0, m4 + mulps m1, m4 + mulps m2, m4 + mulps m3, m4 + cvtps2dq m0, m0 + cvtps2dq m1, m1 + cvtps2dq m2, m2 + cvtps2dq m3, m3 + packssdw m0, m1 + packssdw m2, m3 + mova [dstq+lenq ], m0 + mova [dstq+lenq+mmsize], m2 + add lenq, mmsize*2 + jl .loop + REP_RET + ;----------------------------------------------------------------------------- ; void ff_conv_fltp_to_flt_6ch(float *dst, float *const *src, int len, ; int channels); |