34d8df6a37
git-svn-id: svn://localhost/ardour2/branches/3.0@8559 d708f5d6-7413-0410-9779-e7cbd77b26cf
92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
#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 ()
|
|
{
|
|
}
|
|
|
|
framecnt_t
|
|
SndFileImportableSource::read (Sample* buffer, framecnt_t nframes)
|
|
{
|
|
framecnt_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;
|
|
}
|
|
|
|
framecnt_t
|
|
SndFileImportableSource::samplerate () const
|
|
{
|
|
return sf_info.samplerate;
|
|
}
|
|
|
|
void
|
|
SndFileImportableSource::seek (framepos_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 type = sf_info.format & SF_FORMAT_TYPEMASK;
|
|
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 && type != SF_FORMAT_OGG);
|
|
}
|