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         : in (sf_open (path.c_str(), SFM_READ, &sf_info), sf_close)
  10 {
  11         if (!in) throw failed_constructor();
  12 }
  13
  14 SndFileImportableSource::~SndFileImportableSource ()
  15 {
  16 }
  17
  18 nframes_t
  19 SndFileImportableSource::read (Sample* buffer, nframes_t nframes)
  20 {
  21         nframes_t per_channel = nframes / sf_info.channels;
  22         per_channel = sf_readf_float (in.get(), buffer, per_channel);
  23         return per_channel * sf_info.channels;
  24 }
  25
  26 uint
  27 SndFileImportableSource::channels () const
  28 {
  29         return sf_info.channels;
  30 }
  31
  32 nframes_t
  33 SndFileImportableSource::length () const
  34 {
  35         return sf_info.frames;
  36 }
  37
  38 nframes_t
  39 SndFileImportableSource::samplerate() const
  40 {
  41         return sf_info.samplerate;
  42 }
  43
  44 void
  45 SndFileImportableSource::seek (nframes_t pos)
  46 {
  47         sf_seek (in.get(), 0, SEEK_SET);
  48 }