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/*
Copyright (C) 2006 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.
$Id$
*/
/* This is is very hacky way to get pread and pwrite declarations.
First, include <features.h> so that we can avoid its #undef __USE_UNIX98.
Then define __USE_UNIX98, include <unistd.h>, and then undef it
again. If #define _XOPEN_SOURCE actually worked, I'd use that, but
despite claims in the header that it does, it doesn't.
features.h isn't available on osx and it compiles fine without it.
*/
#ifdef HAVE_FEATURES_H
#include <features.h>
#endif
#if __GNUC__ >= 3
// #define _XOPEN_SOURCE 500
#include <unistd.h>
#else
#define __USE_UNIX98
#include <unistd.h>
#undef __USE_UNIX98
#endif
// darwin supports 64 by default and doesn't provide wrapper functions.
#if defined (__APPLE__)
typedef off_t off64_t;
#define open64 open
#define close64 close
#define lseek64 lseek
#define pread64 pread
#define pwrite64 pwrite
#endif
#include <errno.h>
#include <pbd/error.h>
#include <ardour/destructive_filesource.h>
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
DestructiveFileSource::DestructiveFileSource (string path, jack_nframes_t rate, bool repair_first)
: FileSource (path, rate, repair_first)
{
_capture_start = false;
_capture_end = false;
}
DestructiveFileSource::DestructiveFileSource (const XMLNode& node, jack_nframes_t rate)
: FileSource (node, rate)
{
_capture_start = false;
_capture_end = false;
}
DestructiveFileSource::~DestructiveFileSource()
{
}
int
DestructiveFileSource::seek (jack_nframes_t frame)
{
return 0;
}
void
DestructiveFileSource::mark_capture_start ()
{
_capture_start = true;
}
void
DestructiveFileSource::mark_capture_end()
{
_capture_end = true;
}
void
DestructiveFileSource::clear_capture_marks ()
{
_capture_start = false;
_capture_end = false;
}
jack_nframes_t
DestructiveFileSource::write (Sample* data, jack_nframes_t cnt)
{
{
LockMonitor lm (_lock, __LINE__, __FILE__);
int32_t byte_cnt = cnt * sizeof (Sample);
int32_t byte_pos = data_offset + (_length * sizeof (Sample));
jack_nframes_t oldlen;
if (::pwrite64 (fd, (char *) data, byte_cnt, byte_pos) != (off64_t) byte_cnt) {
error << string_compose(_("FileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
return 0;
}
oldlen = _length;
_length += cnt;
_write_data_count = byte_cnt;
if (_build_peakfiles) {
PeakBuildRecord *pbr = 0;
if (pending_peak_builds.size()) {
pbr = pending_peak_builds.back();
}
if (pbr && pbr->frame + pbr->cnt == oldlen) {
/* the last PBR extended to the start of the current write,
so just extend it again.
*/
pbr->cnt += cnt;
} else {
pending_peak_builds.push_back (new PeakBuildRecord (oldlen, cnt));
}
_peaks_built = false;
}
}
if (_build_peakfiles) {
queue_for_peaks (*this);
}
return cnt;
}
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