1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
/*
* 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 "libavutil/attributes.h"
#include "libavutil/x86/cpu.h"
#include "libavcodec/alacdsp.h"
#include "config.h"
void ff_alac_decorrelate_stereo_sse4(int32_t *buffer[2], int nb_samples,
int decorr_shift, int decorr_left_weight);
void ff_alac_append_extra_bits_stereo_sse2(int32_t *buffer[2], int32_t *extra_bits_buffer[2],
int extra_bits, int channels, int nb_samples);
void ff_alac_append_extra_bits_mono_sse2(int32_t *buffer[2], int32_t *extra_bits_buffer[2],
int extra_bits, int channels, int nb_samples);
av_cold void ff_alacdsp_init_x86(ALACDSPContext *c)
{
#if HAVE_YASM
int cpu_flags = av_get_cpu_flags();
if (EXTERNAL_SSE2(cpu_flags)) {
c->append_extra_bits[0] = ff_alac_append_extra_bits_mono_sse2;
c->append_extra_bits[1] = ff_alac_append_extra_bits_stereo_sse2;
}
if (EXTERNAL_SSE4(cpu_flags)) {
c->decorrelate_stereo = ff_alac_decorrelate_stereo_sse4;
}
#endif /* HAVE_YASM */
}
|
