Paul Davis
30b087ab3d
Generated by tools/f2s. Some hand-editing will be required in a few places to fix up comments related to timecode and video in order to keep the legible
146 lines
3.7 KiB
C++
146 lines
3.7 KiB
C++
/*
|
|
Copyright (C) 2000,2015 Paul Davis
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
*/
|
|
|
|
#include <sndfile.h>
|
|
#include <iostream>
|
|
#include <cstring>
|
|
#include <fcntl.h>
|
|
|
|
#include <glib.h>
|
|
#include "pbd/gstdio_compat.h"
|
|
|
|
|
|
#include "pbd/error.h"
|
|
#include "ardour/sndfileimportable.h"
|
|
|
|
#include <glibmm/convert.h>
|
|
|
|
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;
|
|
}
|
|
|
|
/* see http://tracker.ardour.org/view.php?id=6208
|
|
* 0xffffffff 0xfffc5680
|
|
* seems to be a bug in Presonus Capture (which generated the file)
|
|
*
|
|
* still since samplepos_t is a signed int, ignore files that could
|
|
* lead to negative timestamps for now.
|
|
*/
|
|
|
|
if (binfo->time_reference_high & 0x80000000) {
|
|
char tmp[64];
|
|
snprintf(tmp, sizeof(tmp), "%x%08x", binfo->time_reference_high, binfo->time_reference_low);
|
|
PBD::warning << "Invalid Timestamp " << tmp << endmsg;
|
|
exists = false;
|
|
return 0;
|
|
}
|
|
|
|
exists = true;
|
|
/* libsndfile reads eactly 4 bytes for high and low, but
|
|
* uses "unsigned int" which may or may not be 32 bit little
|
|
* endian.
|
|
*/
|
|
int64_t ret = (uint32_t) (binfo->time_reference_high & 0x7fffffff);
|
|
ret <<= 32;
|
|
ret |= (uint32_t) (binfo->time_reference_low & 0xffffffff);
|
|
|
|
assert(ret >= 0);
|
|
return ret;
|
|
}
|
|
|
|
SndFileImportableSource::SndFileImportableSource (const string& path)
|
|
{
|
|
int fd = g_open (path.c_str (), O_RDONLY, 0444);
|
|
if (fd == -1) {
|
|
throw failed_constructor ();
|
|
}
|
|
memset(&sf_info, 0 , sizeof(sf_info));
|
|
in.reset (sf_open_fd (fd, SFM_READ, &sf_info, true), 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 ()
|
|
{
|
|
}
|
|
|
|
samplecnt_t
|
|
SndFileImportableSource::read (Sample* buffer, samplecnt_t nframes)
|
|
{
|
|
samplecnt_t per_channel = nframes / sf_info.channels;
|
|
per_channel = sf_readf_float (in.get(), buffer, per_channel);
|
|
return per_channel * sf_info.channels;
|
|
}
|
|
|
|
uint32_t
|
|
SndFileImportableSource::channels () const
|
|
{
|
|
return sf_info.channels;
|
|
}
|
|
|
|
samplecnt_t
|
|
SndFileImportableSource::length () const
|
|
{
|
|
return (samplecnt_t) sf_info.frames;
|
|
}
|
|
|
|
samplecnt_t
|
|
SndFileImportableSource::samplerate () const
|
|
{
|
|
return sf_info.samplerate;
|
|
}
|
|
|
|
void
|
|
SndFileImportableSource::seek (samplepos_t /*pos*/)
|
|
{
|
|
sf_seek (in.get(), 0, SEEK_SET);
|
|
}
|
|
|
|
samplepos_t
|
|
SndFileImportableSource::natural_position () const
|
|
{
|
|
return (samplepos_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);
|
|
}
|