mdw@git.distorted.org.uk Git - disorder/blob - lib/resample.h

   1 /*
   2  * This file is part of DisOrder.
   3  * Copyright (C) 2009 Richard Kettlewell
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 /** @file lib/resample.h
  20  * @brief Audio resampling
  21  */
  22
  23 #ifndef RESAMPLE_H
  24 #define RESAMPLE_H
  25
  26 #if HAVE_SAMPLERATE_H
  27 #include <samplerate.h>
  28 #endif
  29
  30 #include "byte-order.h"
  31
  32 struct resampler {
  33   int input_bits, input_channels, input_rate, input_signed, input_endian;
  34   int output_bits, output_channels, output_rate, output_signed, output_endian;
  35   int input_bytes_per_sample;
  36   int input_bytes_per_frame;
  37 #if HAVE_SAMPLERATE_H
  38   SRC_STATE *state;
  39 #endif
  40 };
  41
  42 void resample_init(struct resampler *rs,
  43                    int input_bits, int input_channels,
  44                    int input_rate, int input_signed,
  45                    int input_endian,
  46                    int output_bits, int output_channels,
  47                    int output_rate, int output_signed,
  48                    int output_endian);
  49 size_t resample_convert(const struct resampler *rs,
  50                         const uint8_t *bytes,
  51                         size_t nbytes,
  52                         int eof,
  53                         void (*converted)(uint8_t *bytes,
  54                                           size_t nbytes,
  55                                           void *cd),
  56                         void *cd);
  57 void resample_close(struct resampler *rs);
  58
  59 #endif /* RESAMPLE_H */
  60
  61 /*
  62 Local Variables:
  63 c-basic-offset:2
  64 comment-column:40
  65 fill-column:79
  66 indent-tabs-mode:nil
  67 End:
  68 */