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"
24 #include "libavcodec/opus_imdct.h"
26 #include "asm-offsets.h"
28 AV_CHECK_OFFSET(CeltIMDCTContext
, exptab
, CELT_EXPTAB
);
29 AV_CHECK_OFFSET(CeltIMDCTContext
, fft_n
, CELT_FFT_N
);
30 AV_CHECK_OFFSET(CeltIMDCTContext
, len2
, CELT_LEN2
);
31 AV_CHECK_OFFSET(CeltIMDCTContext
, len4
, CELT_LEN4
);
32 AV_CHECK_OFFSET(CeltIMDCTContext
, tmp
, CELT_TMP
);
33 AV_CHECK_OFFSET(CeltIMDCTContext
, twiddle_exptab
, CELT_TWIDDLE
);
35 void ff_celt_imdct_half_neon(CeltIMDCTContext
*s
, float *dst
, const float *src
,
36 ptrdiff_t stride
, float scale
);
38 void ff_celt_imdct_init_aarch64(CeltIMDCTContext
*s
)
40 int cpu_flags
= av_get_cpu_flags();
42 if (have_neon(cpu_flags
)) {
43 s
->imdct_half
= ff_celt_imdct_half_neon
;