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| author | James Almer <jamrial@gmail.com> | 2016-01-15 22:04:09 -0300 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2016-01-16 21:09:38 -0300 |
| commit | dee579ffcd70d4a386e4d2dad6967de3bf2db3ed (patch) | |
| tree | d63906d5f6ab75f78293e97250f3b7c2d7764254 /libavutil/x86/fixed_dsp.asm | |
| parent | aa6aa2ef091818c2669c48051286ce361401f31b (diff) | |
| download | ffmpeg-streaming-dee579ffcd70d4a386e4d2dad6967de3bf2db3ed.zip ffmpeg-streaming-dee579ffcd70d4a386e4d2dad6967de3bf2db3ed.tar.gz | |
x86/fixed_dsp: add ff_butterflies_fixed_sse2
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
Diffstat (limited to 'libavutil/x86/fixed_dsp.asm')
| -rw-r--r-- | libavutil/x86/fixed_dsp.asm | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/libavutil/x86/fixed_dsp.asm b/libavutil/x86/fixed_dsp.asm new file mode 100644 index 0000000..979dd5c --- /dev/null +++ b/libavutil/x86/fixed_dsp.asm @@ -0,0 +1,48 @@ +;***************************************************************************** +;* x86-optimized Float DSP functions +;* +;* Copyright 2016 James Almer +;* +;* This file is part of FFmpeg. +;* +;* FFmpeg is free software; you can redistribute it and/or +;* modify it under the terms of the GNU Lesser General Public +;* License as published by the Free Software Foundation; either +;* version 2.1 of the License, or (at your option) any later version. +;* +;* FFmpeg is distributed in the hope that it will be useful, +;* but WITHOUT ANY WARRANTY; without even the implied warranty of +;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +;* Lesser General Public License for more details. +;* +;* You should have received a copy of the GNU Lesser General Public +;* License along with FFmpeg; if not, write to the Free Software +;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +;****************************************************************************** + +%include "x86util.asm" + +SECTION .text + +;----------------------------------------------------------------------------- +; void ff_butterflies_fixed(float *src0, float *src1, int len); +;----------------------------------------------------------------------------- +INIT_XMM sse2 +cglobal butterflies_fixed, 3,3,3, src0, src1, len + shl lend, 2 + add src0q, lenq + add src1q, lenq + neg lenq + +align 16 +.loop: + mova m0, [src0q + lenq] + mova m1, [src1q + lenq] + mova m2, m0 + paddd m0, m1 + psubd m2, m1 + mova [src0q + lenq], m0 + mova [src1q + lenq], m2 + add lenq, mmsize + jl .loop + RET |
