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/*
Copyright (C) 2000 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., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#include <string>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/time.h>
#include <pbd/mountpoint.h>
#include <ardour/sndfilesource.h>
#include "i18n.h"
using namespace ARDOUR;
string SndFileSource::peak_dir = "";
SndFileSource::SndFileSource (const XMLNode& node)
: Source (node)
{
if (set_state (node)) {
throw failed_constructor();
}
init (_name, true);
SourceCreated (this); /* EMIT SIGNAL */
}
SndFileSource::SndFileSource (const string& idstr, bool build_peak)
: Source(build_peak)
{
init (idstr, build_peak);
if (build_peak) {
SourceCreated (this); /* EMIT SIGNAL */
}
}
void
SndFileSource::init (const string& idstr, bool build_peak)
{
string::size_type pos;
string file;
tmpbuf = 0;
tmpbufsize = 0;
sf = 0;
_name = idstr;
if ((pos = idstr.find_last_of (':')) == string::npos) {
channel = 0;
file = idstr;
} else {
channel = atoi (idstr.substr (pos+1).c_str());
file = idstr.substr (0, pos);
}
/* although libsndfile says we don't need to set this,
valgrind and source code shows us that we do.
*/
memset (&_info, 0, sizeof(_info));
/* note that we temporarily truncated _id at the colon */
if ((sf = sf_open (file.c_str(), SFM_READ, &_info)) == 0) {
char errbuf[256];
sf_error_str (0, errbuf, sizeof (errbuf) - 1);
error << compose(_("SndFileSource: cannot open file \"%1\" (%2)"), file, errbuf) << endmsg;
throw failed_constructor();
}
if (channel >= _info.channels) {
error << compose(_("SndFileSource: file only contains %1 channels; %2 is invalid as a channel number"), _info.channels, channel) << endmsg;
sf_close (sf);
sf = 0;
throw failed_constructor();
}
_length = _info.frames;
_path = file;
if (build_peak) {
if (initialize_peakfile (false, file)) {
sf_close (sf);
sf = 0;
throw failed_constructor ();
}
}
}
SndFileSource::~SndFileSource ()
{
GoingAway (this); /* EMIT SIGNAL */
if (sf) {
sf_close (sf);
}
if (tmpbuf) {
delete [] tmpbuf;
}
}
jack_nframes_t
SndFileSource::read_unlocked (Sample *dst, jack_nframes_t start, jack_nframes_t cnt) const
{
return read (dst, start, cnt);
}
jack_nframes_t
SndFileSource::read (Sample *dst, jack_nframes_t start, jack_nframes_t cnt) const
{
int32_t nread;
float *ptr;
uint32_t real_cnt;
if (sf_seek (sf, (off_t) start, SEEK_SET) < 0) {
char errbuf[256];
sf_error_str (0, errbuf, sizeof (errbuf) - 1);
error << compose(_("SndFileSource: could not seek to frame %1 within %2 (%3)"), start, _name.substr (1), errbuf) << endmsg;
return 0;
}
if (_info.channels == 1) {
jack_nframes_t ret = sf_read_float (sf, dst, cnt);
_read_data_count = cnt * sizeof(float);
return ret;
}
real_cnt = cnt * _info.channels;
{
LockMonitor lm (_tmpbuf_lock, __LINE__, __FILE__);
if (tmpbufsize < real_cnt) {
if (tmpbuf) {
delete [] tmpbuf;
}
tmpbufsize = real_cnt;
tmpbuf = new float[tmpbufsize];
}
nread = sf_read_float (sf, tmpbuf, real_cnt);
ptr = tmpbuf + channel;
nread /= _info.channels;
/* stride through the interleaved data */
for (int32_t n = 0; n < nread; ++n) {
dst[n] = *ptr;
ptr += _info.channels;
}
}
_read_data_count = cnt * sizeof(float);
return nread;
}
string
SndFileSource::peak_path (string audio_path)
{
/* XXX hardly bombproof! fix me */
struct stat stat_file;
struct stat stat_mount;
string mp = mountpoint (audio_path);
stat (audio_path.c_str(), &stat_file);
stat (mp.c_str(), &stat_mount);
char buf[32];
snprintf (buf, sizeof (buf), "%ld-%ld-%d.peak", stat_mount.st_ino, stat_file.st_ino, channel);
string res = peak_dir;
res += buf;
return res;
}
string
SndFileSource::old_peak_path (string audio_path)
{
return peak_path (audio_path);
}
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