libs/ardour/sndfileimportable.cc

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