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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2012-04-20 23:48:08 +0400 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2012-06-19 00:16:59 +0400 |
| commit | 1168e29df13c3d8694e3285b126e16063d2dfd67 (patch) | |
| tree | 1ab6beec96bae4b7265a01cde2310ba112376e6b /libavresample/x86/audio_convert.asm | |
| parent | 579fd87b46ccf8b126fed180a7194460fe55c016 (diff) | |
lavr: Add x86-optimized function for s16 to s32 conversion
Diffstat (limited to 'libavresample/x86/audio_convert.asm')
| -rw-r--r-- | libavresample/x86/audio_convert.asm | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/libavresample/x86/audio_convert.asm b/libavresample/x86/audio_convert.asm index ba59f3314f..e2cfbf950c 100644 --- a/libavresample/x86/audio_convert.asm +++ b/libavresample/x86/audio_convert.asm @@ -1,6 +1,7 @@ ;****************************************************************************** ;* x86 optimized Format Conversion Utils ;* Copyright (c) 2008 Loren Merritt +;* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com> ;* ;* This file is part of Libav. ;* @@ -24,6 +25,28 @@ SECTION_TEXT +;------------------------------------------------------------------------------ +; void ff_conv_s16_to_s32(int32_t *dst, const int16_t *src, int len); +;------------------------------------------------------------------------------ + +INIT_XMM sse2 +cglobal conv_s16_to_s32, 3,3,3, dst, src, len + lea lenq, [2*lend] + lea dstq, [dstq+2*lenq] + add srcq, lenq + neg lenq +.loop: + mova m2, [srcq+lenq] + pxor m0, m0 + pxor m1, m1 + punpcklwd m0, m2 + punpckhwd m1, m2 + mova [dstq+2*lenq ], m0 + mova [dstq+2*lenq+mmsize], m1 + add lenq, mmsize + jl .loop + REP_RET + ;----------------------------------------------------------------------------- ; void ff_conv_fltp_to_flt_6ch(float *dst, float *const *src, int len, ; int channels); |