2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/cpu.h"
22 #include "libavutil/aarch64/cpu.h"
23 #include "libavutil/internal.h"
25 #include "libavcodec/imdct15.h"
27 #include "asm-offsets.h"
29 AV_CHECK_OFFSET(IMDCT15Context, exptab, CELT_EXPTAB);
30 AV_CHECK_OFFSET(IMDCT15Context, fft_n, CELT_FFT_N);
31 AV_CHECK_OFFSET(IMDCT15Context, len2, CELT_LEN2);
32 AV_CHECK_OFFSET(IMDCT15Context, len4, CELT_LEN4);
33 AV_CHECK_OFFSET(IMDCT15Context, tmp, CELT_TMP);
34 AV_CHECK_OFFSET(IMDCT15Context, twiddle_exptab, CELT_TWIDDLE);
36 void ff_celt_imdct_half_neon(IMDCT15Context *s, float *dst, const float *src,
37 ptrdiff_t stride, float scale);
39 void ff_imdct15_init_aarch64(IMDCT15Context *s)
41 int cpu_flags = av_get_cpu_flags();
43 if (have_neon(cpu_flags)) {
44 s->imdct_half = ff_celt_imdct_half_neon;