mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
db3f6465a6
* commit '12655c48049f9a52e5504bde90fe738862b0ff08': libavresample: NEON optimized FIR audio resampling Merged-by: Michael Niedermayer <michaelni@gmx.at>
75 lines
2.8 KiB
C
75 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net>
|
|
*
|
|
* 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/cpu.h"
|
|
#include "libavutil/arm/cpu.h"
|
|
#include "libavutil/internal.h"
|
|
#include "libavutil/samplefmt.h"
|
|
|
|
#include "libavresample/resample.h"
|
|
|
|
#include "asm-offsets.h"
|
|
|
|
AV_CHECK_OFFSET(struct ResampleContext, filter_bank, FILTER_BANK);
|
|
AV_CHECK_OFFSET(struct ResampleContext, filter_length, FILTER_LENGTH);
|
|
AV_CHECK_OFFSET(struct ResampleContext, src_incr, SRC_INCR);
|
|
AV_CHECK_OFFSET(struct ResampleContext, phase_shift, PHASE_SHIFT);
|
|
AV_CHECK_OFFSET(struct ResampleContext, phase_mask, PHASE_MASK);
|
|
|
|
void ff_resample_one_flt_neon(struct ResampleContext *c, void *dst0,
|
|
int dst_index, const void *src0,
|
|
unsigned int index, int frac);
|
|
void ff_resample_one_s16_neon(struct ResampleContext *c, void *dst0,
|
|
int dst_index, const void *src0,
|
|
unsigned int index, int frac);
|
|
void ff_resample_one_s32_neon(struct ResampleContext *c, void *dst0,
|
|
int dst_index, const void *src0,
|
|
unsigned int index, int frac);
|
|
|
|
void ff_resample_linear_flt_neon(struct ResampleContext *c, void *dst0,
|
|
int dst_index, const void *src0,
|
|
unsigned int index, int frac);
|
|
|
|
av_cold void ff_audio_resample_init_arm(ResampleContext *c,
|
|
enum AVSampleFormat sample_fmt)
|
|
{
|
|
int cpu_flags = av_get_cpu_flags();
|
|
if (have_neon(cpu_flags)) {
|
|
switch (sample_fmt) {
|
|
case AV_SAMPLE_FMT_FLTP:
|
|
if (c->linear)
|
|
c->resample_one = ff_resample_linear_flt_neon;
|
|
else
|
|
c->resample_one = ff_resample_one_flt_neon;
|
|
break;
|
|
case AV_SAMPLE_FMT_S16P:
|
|
if (!c->linear)
|
|
c->resample_one = ff_resample_one_s16_neon;
|
|
break;
|
|
case AV_SAMPLE_FMT_S32P:
|
|
if (!c->linear)
|
|
c->resample_one = ff_resample_one_s32_neon;
|
|
break;
|
|
}
|
|
}
|
|
}
|