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FFmpeg/libavcodec/aarch64/mpegaudiodsp_init.c
Janne Grunau 8f9fe6ae34 aarch64: NEON fixed/floating point MPADSP apply_window
30%/25% (fixed/float) faster mp3 decoding on Apple's A7. The floating
point decoder is approximately 7% faster.
2014-04-22 22:01:45 +02:00

40 lines
1.5 KiB
C

/*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include "libavutil/attributes.h"
#include "libavutil/aarch64/cpu.h"
#include "libavcodec/mpegaudiodsp.h"
#include "config.h"
void ff_mpadsp_apply_window_fixed_neon(int32_t *synth_buf, int32_t *window,
int *dither, int16_t *samples, int incr);
void ff_mpadsp_apply_window_float_neon(float *synth_buf, float *window,
int *dither, float *samples, int incr);
av_cold void ff_mpadsp_init_aarch64(MPADSPContext *s)
{
int cpu_flags = av_get_cpu_flags();
if (have_neon(cpu_flags)) {
s->apply_window_fixed = ff_mpadsp_apply_window_fixed_neon;
s->apply_window_float = ff_mpadsp_apply_window_float_neon;
}
}