mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
45 lines
1.6 KiB
45 lines
1.6 KiB
16 years ago
|
/*
|
||
|
|
* 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 "libavcodec/dsputil.h"
|
||
|
|
#include "fft.h"
|
||
|
|
|
||
|
|
av_cold void ff_fft_init_mmx(FFTContext *s)
|
||
|
|
{
|
||
|
|
#if HAVE_YASM
|
||
|
|
int has_vectors = mm_support();
|
||
|
|
if (has_vectors & FF_MM_SSE && HAVE_SSE) {
|
||
|
|
/* SSE for P3/P4/K8 */
|
||
|
|
s->imdct_calc = ff_imdct_calc_sse;
|
||
|
|
s->imdct_half = ff_imdct_half_sse;
|
||
|
|
s->fft_permute = ff_fft_permute_sse;
|
||
|
|
s->fft_calc = ff_fft_calc_sse;
|
||
|
|
} else if (has_vectors & FF_MM_3DNOWEXT && HAVE_AMD3DNOWEXT) {
|
||
|
|
/* 3DNowEx for K7 */
|
||
|
|
s->imdct_calc = ff_imdct_calc_3dn2;
|
||
|
|
s->imdct_half = ff_imdct_half_3dn2;
|
||
|
|
s->fft_calc = ff_fft_calc_3dn2;
|
||
|
|
} else if (has_vectors & FF_MM_3DNOW && HAVE_AMD3DNOW) {
|
||
|
|
/* 3DNow! for K6-2/3 */
|
||
|
|
s->imdct_calc = ff_imdct_calc_3dn;
|
||
|
|
s->imdct_half = ff_imdct_half_3dn;
|
||
|
|
s->fft_calc = ff_fft_calc_3dn;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|