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 #define ENDIAN_BIG 1
  31 #define ENDIAN_LITTLE 2
  32
  33 struct resampler {
  34   int input_bits, input_channels, input_rate, input_signed, input_endian;
  35   int output_bits, output_channels, output_rate, output_signed, output_endian;
  36   int input_bytes_per_sample;
  37   int input_bytes_per_frame;
  38 #if HAVE_SAMPLERATE_H
  39   SRC_STATE *state;
  40 #endif
  41 };
  42
  43 void resample_init(struct resampler *rs,
  44                    int input_bits, int input_channels,
  45                    int input_rate, int input_signed,
  46                    int input_endian,
  47                    int output_bits, int output_channels,
  48                    int output_rate, int output_signed,
  49                    int output_endian);
  50 size_t resample_convert(const struct resampler *rs,
  51                         const uint8_t *bytes,
  52                         size_t nbytes,
  53                         int eof,
  54                         void (*converted)(uint8_t *bytes,
  55                                           size_t nbytes,
  56                                           void *cd),
  57                         void *cd);
  58 void resample_close(struct resampler *rs);
  59
  60 #endif /* RESAMPLE_H */
  61
  62 /*
  63 Local Variables:
  64 c-basic-offset:2
  65 comment-column:40
  66 fill-column:79
  67 indent-tabs-mode:nil
  68 End:
  69 */