resample_filter.c

   1 /*
   2  * Copyright (C) 2012 Andre Noll <maan@systemlinux.org>
   3  *
   4  * Licensed under the GPL v2. For licencing details see COPYING.
   5  */
   6
   7 /** \file resample_filter.c A sample rate converter based on libsamplerate. */
   8
   9 #include <regex.h>
  10
  11 #include "resample_filter.cmdline.h"
  12 #include "para.h"
  13 #include "error.h"
  14 #include "list.h"
  15 #include "sched.h"
  16 #include "ggo.h"
  17 #include "buffer_tree.h"
  18 #include "filter.h"
  19 #include "string.h"
  20
  21 static void resample_close(struct filter_node *fn)
  22 {
  23         free(fn->private_data);
  24         fn->private_data = NULL;
  25 }
  26
  27 static void resample_open(struct filter_node *fn)
  28 {
  29 }
  30
  31 static void resample_pre_select(struct sched *s, struct task *t)
  32 {
  33         struct filter_node *fn = container_of(t, struct filter_node, task);
  34 }
  35
  36 static void resample_post_select(__a_unused struct sched *s, struct task *t)
  37 {
  38         struct filter_node *fn = container_of(t, struct filter_node, task);
  39 }
  40
  41 static int resample_parse_config(int argc, char **argv, void **config)
  42 {
  43         return 0;
  44 }
  45
  46 static void resample_free_config(void *conf)
  47 {
  48         resample_filter_cmdline_parser_free(conf);
  49 }
  50
  51 /**
  52  * The init function of the resample filter.
  53  *
  54  * \param f Structure to initialize.
  55  */
  56 void resample_filter_init(struct filter *f)
  57 {
  58         struct resample_filter_args_info dummy;
  59
  60         resample_filter_cmdline_parser_init(&dummy);
  61         f->close = resample_close;
  62         f->open = resample_open;
  63         f->pre_select = resample_pre_select;
  64         f->post_select = resample_post_select;
  65         f->parse_config = resample_parse_config;
  66         f->free_config = resample_free_config;
  67         f->help = (struct ggo_help) {
  68                 .short_help = resample_filter_args_info_help,
  69                 .detailed_help = resample_filter_args_info_detailed_help
  70         };
  71 }