ffmpeg/libavresample/aarch64/resample_init.c

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   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.
   8  *
   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.
  13  *
  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
  17  */
  18
  19 #include <stdint.h>
  20
  21 #include "config.h"
  22 #include "libavutil/cpu.h"
  23 #include "libavutil/aarch64/cpu.h"
  24 #include "libavutil/internal.h"
  25 #include "libavutil/samplefmt.h"
  26 #include "libavresample/resample.h"
  27
  28 #include "asm-offsets.h"
  29
  30 AV_CHECK_OFFSET(struct ResampleContext, filter_bank,   FILTER_BANK);
  31 AV_CHECK_OFFSET(struct ResampleContext, filter_length, FILTER_LENGTH);
  32 AV_CHECK_OFFSET(struct ResampleContext, phase_shift,   PHASE_SHIFT);
  33 AV_CHECK_OFFSET(struct ResampleContext, phase_mask,    PHASE_MASK);
  34
  35 void ff_resample_one_dbl_neon(struct ResampleContext *c, void *dst0,
  36                               int dst_index, const void *src0,
  37                               unsigned int index, int frac);
  38 void ff_resample_one_flt_neon(struct ResampleContext *c, void *dst0,
  39                               int dst_index, const void *src0,
  40                               unsigned int index, int frac);
  41 void ff_resample_one_s16_neon(struct ResampleContext *c, void *dst0,
  42                               int dst_index, const void *src0,
  43                               unsigned int index, int frac);
  44 void ff_resample_one_s32_neon(struct ResampleContext *c, void *dst0,
  45                               int dst_index, const void *src0,
  46                               unsigned int index, int frac);
  47
  48 void ff_audio_resample_init_aarch64(ResampleContext *c,
  49                                     enum AVSampleFormat sample_fmt)
  50 {
  51     int cpu_flags = av_get_cpu_flags();
  52
  53     if (have_neon(cpu_flags)) {
  54         if (!c->linear) {
  55             switch (sample_fmt) {
  56             case AV_SAMPLE_FMT_DBLP:
  57                 c->resample_one  = ff_resample_one_dbl_neon;
  58                 break;
  59             case AV_SAMPLE_FMT_FLTP:
  60                 c->resample_one  = ff_resample_one_flt_neon;
  61                 break;
  62             case AV_SAMPLE_FMT_S16P:
  63                 c->resample_one  = ff_resample_one_s16_neon;
  64                 break;
  65             case AV_SAMPLE_FMT_S32P:
  66                 c->resample_one  = ff_resample_one_s32_neon;
  67                 break;
  68             }
  69         }
  70     }
  71 }