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examples/utils.c: get samplerate from file

--- a/examples/utils.c

+++ b/examples/utils.c

@@ -60,7 +60,6 @@

 uint_t overlap_size = 256;      //512;

 uint_t samplerate = 44100;

-

 aubio_source_t *this_source = NULL;

 aubio_sink_t *this_sink = NULL;

@@ -203,15 +202,12 @@

   if (!usejack) {

     debug ("Opening files ...\n");

-    // TODO get actual samplerate

-    samplerate = 44100;

-    this_source = new_aubio_source ((char_t*)source_uri, samplerate, overlap_size);

+    this_source = new_aubio_source ((char_t*)source_uri, 0, overlap_size);

     if (this_source == NULL) {

       outmsg ("Could not open input file %s.\n", source_uri);

       exit (1);

     }

-    // TODO get actual samplerate

-    //samplerate = aubio_sndfile_samplerate (this_source);

+    samplerate = aubio_source_get_samplerate(this_source);

     if (sink_uri != NULL) {

       this_sink = new_aubio_sink ((char_t*)sink_uri, samplerate);

     }