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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/ffvpx/libavcodec/x86/fft_init.c | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | media/ffvpx/libavcodec/x86/fft_init.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/x86/fft_init.c b/media/ffvpx/libavcodec/x86/fft_init.c new file mode 100644 index 0000000000..df79d57dc7 --- /dev/null +++ b/media/ffvpx/libavcodec/x86/fft_init.c @@ -0,0 +1,47 @@ +/* + * 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 "config.h" + +#include "libavutil/attributes.h" +#include "libavutil/cpu.h" +#include "libavutil/x86/cpu.h" + +#include "fft.h" + +av_cold void ff_fft_init_x86(FFTContext *s) +{ + int cpu_flags = av_get_cpu_flags(); + + if (s->nbits > 16) + return; + + if (EXTERNAL_SSE(cpu_flags)) { + 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; + s->fft_permutation = FF_FFT_PERM_SWAP_LSBS; + } + + if (EXTERNAL_AVX_FAST(cpu_flags) && s->nbits >= 5) { + s->imdct_half = ff_imdct_half_avx; + s->fft_calc = ff_fft_calc_avx; + s->fft_permutation = FF_FFT_PERM_AVX; + } +} |