libs/ardour/sndfileimportable.cc

   1 #include <ardour/sndfileimportable.h>
   2 #include <sndfile.h>
   3 #include <iostream>
   4
   5 using namespace ARDOUR;
   6 using namespace std;
   7
   8 SndFileImportableSource::SndFileImportableSource (const string& path)
   9 {
  10         memset(&sf_info, 0 , sizeof(sf_info));
  11         in.reset( sf_open(path.c_str(), SFM_READ, &sf_info), sf_close);
  12         if (!in) throw failed_constructor();
  13 }
  14
  15 SndFileImportableSource::~SndFileImportableSource ()
  16 {
  17 }
  18
  19 nframes_t
  20 SndFileImportableSource::read (Sample* buffer, nframes_t nframes)
  21 {
  22         nframes_t per_channel = nframes / sf_info.channels;
  23         per_channel = sf_readf_float (in.get(), buffer, per_channel);
  24         return per_channel * sf_info.channels;
  25 }
  26
  27 uint
  28 SndFileImportableSource::channels () const
  29 {
  30         return sf_info.channels;
  31 }
  32
  33 nframes_t
  34 SndFileImportableSource::length () const
  35 {
  36         return sf_info.frames;
  37 }
  38
  39 nframes_t
  40 SndFileImportableSource::samplerate() const
  41 {
  42         return sf_info.samplerate;
  43 }
  44
  45 void
  46 SndFileImportableSource::seek (nframes_t pos)
  47 {
  48         sf_seek (in.get(), 0, SEEK_SET);
  49 }