src/raw-fmt.c

   1 /* libSoX file formats: raw         (c) 2007-11 SoX contributors
   2  *
   3  * This library is free software; you can redistribute it and/or modify it
   4  * under the terms of the GNU Lesser General Public License as published by
   5  * the Free Software Foundation; either version 2.1 of the License, or (at
   6  * your option) any later version.
   7  *
   8  * This library is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Lesser General Public License
  14  * along with this library; if not, write to the Free Software Foundation,
  15  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  16  */
  17
  18 #include "sox_i.h"
  19
  20 static int raw_start(sox_format_t * ft) {
  21   return lsx_rawstart(ft, sox_false, sox_false, sox_true, SOX_ENCODING_UNKNOWN, 0);
  22 }
  23
  24 LSX_FORMAT_HANDLER(raw)
  25 {
  26   static char const * const names[] = {"raw", NULL};
  27   static unsigned const encodings[] = {
  28     SOX_ENCODING_SIGN2, 32, 24, 16, 8, 0,
  29     SOX_ENCODING_UNSIGNED, 32, 24, 16, 8, 0,
  30     SOX_ENCODING_ULAW, 8, 0,
  31     SOX_ENCODING_ALAW, 8, 0,
  32     SOX_ENCODING_FLOAT, 64, 32, 0,
  33     0};
  34   static sox_format_handler_t const handler = {SOX_LIB_VERSION_CODE,
  35     "Raw PCM, mu-law, or A-law", names, 0,
  36     raw_start, lsx_rawread , NULL,
  37     raw_start, lsx_rawwrite, NULL,
  38     lsx_rawseek, encodings, NULL, 0
  39   };
  40   return &handler;
  41 }
  42
  43 static int sln_start(sox_format_t * ft)
  44 {
  45   return lsx_check_read_params(ft, 1, 8000., SOX_ENCODING_SIGN2, 16, (uint64_t)0, sox_false);
  46 }
  47
  48 LSX_FORMAT_HANDLER(sln)
  49 {
  50   static char const * const names[] = {"sln", NULL};
  51   static unsigned const write_encodings[] = {SOX_ENCODING_SIGN2, 16, 0, 0};
  52   static sox_rate_t const write_rates[] = {8000, 0};
  53   static sox_format_handler_t handler = {SOX_LIB_VERSION_CODE,
  54     "Asterisk PBX headerless format",
  55     names, SOX_FILE_LIT_END|SOX_FILE_MONO,
  56     sln_start, lsx_rawread, NULL,
  57     NULL, lsx_rawwrite, NULL,
  58     lsx_rawseek, write_encodings, write_rates, 0
  59   };
  60   return &handler;
  61 }