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#include "ardour/sndfileimportable.h"
#include <sndfile.h>
#include <iostream>
#include <cstring>
using namespace ARDOUR;
using namespace std;
/* FIXME: this was copied from sndfilesource.cc, at some point these should be merged */
int64_t
SndFileImportableSource::get_timecode_info (SNDFILE* sf, SF_BROADCAST_INFO* binfo, bool& exists)
{
if (sf_command (sf, SFC_GET_BROADCAST_INFO, binfo, sizeof (*binfo)) != SF_TRUE) {
exists = false;
return 0;
}
exists = true;
int64_t ret = (uint32_t) binfo->time_reference_high;
ret <<= 32;
ret |= (uint32_t) binfo->time_reference_low;
return ret;
}
SndFileImportableSource::SndFileImportableSource (const string& path)
{
memset(&sf_info, 0 , sizeof(sf_info));
in.reset( sf_open(path.c_str(), SFM_READ, &sf_info), sf_close);
if (!in) throw failed_constructor();
SF_BROADCAST_INFO binfo;
bool timecode_exists;
memset (&binfo, 0, sizeof (binfo));
timecode = get_timecode_info (in.get(), &binfo, timecode_exists);
if (!timecode_exists) {
timecode = 0;
}
}
SndFileImportableSource::~SndFileImportableSource ()
{
}
nframes_t
SndFileImportableSource::read (Sample* buffer, nframes_t nframes)
{
nframes_t per_channel = nframes / sf_info.channels;
per_channel = sf_readf_float (in.get(), buffer, per_channel);
return per_channel * sf_info.channels;
}
uint
SndFileImportableSource::channels () const
{
return sf_info.channels;
}
framecnt_t
SndFileImportableSource::length () const
{
return (framecnt_t) sf_info.frames;
}
nframes_t
SndFileImportableSource::samplerate() const
{
return sf_info.samplerate;
}
void
SndFileImportableSource::seek (nframes_t /*pos*/)
{
sf_seek (in.get(), 0, SEEK_SET);
}
framepos_t
SndFileImportableSource::natural_position () const
{
return (framepos_t) timecode;
}
bool
SndFileImportableSource::clamped_at_unity () const
{
int const sub = sf_info.format & SF_FORMAT_SUBMASK;
/* XXX: this may not be the full list of formats that are unclamped */
return (sub != SF_FORMAT_FLOAT && sub != SF_FORMAT_DOUBLE && sub != SF_FORMAT_OGG);
}
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