97 lines
2.2 KiB
C++
97 lines
2.2 KiB
C++
/*
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Copyright (C) 2010 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/** @file libs/pbd/sndfile_manager.cc
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* @brief A FileDescriptor for files opened using libsndfile.
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*/
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <cassert>
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#include "pbd/compose.h"
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#include "pbd/sndfile_manager.h"
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#include "pbd/debug.h"
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using namespace std;
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using namespace PBD;
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/** @param file_name Filename.
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* @param writeable true to open writeable, otherwise false.
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* @param info SF_INFO for the file.
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*/
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SndFileDescriptor::SndFileDescriptor (string const & file_name, bool writeable, SF_INFO* info)
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: FileDescriptor (file_name, writeable)
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, _sndfile (0)
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, _info (info)
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{
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manager()->add (this);
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}
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SndFileDescriptor::~SndFileDescriptor ()
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{
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manager()->remove (this);
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}
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/** @return SNDFILE*, or 0 on error */
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SNDFILE*
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SndFileDescriptor::allocate ()
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{
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bool const f = manager()->allocate (this);
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if (f) {
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return 0;
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}
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/* this is ok thread-wise because allocate () has incremented
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the Descriptor's refcount, so the file will not be closed
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*/
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return _sndfile;
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}
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void
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SndFileDescriptor::close ()
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{
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/* we must have a lock on the FileManager's mutex */
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assert (_sndfile);
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sf_close (_sndfile);
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_sndfile = 0;
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}
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bool
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SndFileDescriptor::is_open () const
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{
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/* we must have a lock on the FileManager's mutex */
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return _sndfile != 0;
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}
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bool
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SndFileDescriptor::open ()
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{
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/* we must have a lock on the FileManager's mutex */
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_sndfile = sf_open (_path.c_str(), _writeable ? SFM_RDWR : SFM_READ, _info);
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return (_sndfile == 0);
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}
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