851 lines
22 KiB
C++
851 lines
22 KiB
C++
/*
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* Copyright (C) 2005-2006 Taybin Rutkin <taybin@taybin.com>
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* Copyright (C) 2005-2017 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2006-2014 David Robillard <d@drobilla.net>
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* Copyright (C) 2008-2012 Carl Hetherington <carl@carlh.net>
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* Copyright (C) 2012-2018 Robin Gareus <robin@gareus.org>
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* Copyright (C) 2013-2015 John Emmas <john@creativepost.co.uk>
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* Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com>
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifdef WAF_BUILD
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#include "libardour-config.h"
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#endif
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#include <cstring>
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#include <cerrno>
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#include <climits>
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#include <cstdarg>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <glib.h>
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#include "pbd/gstdio_compat.h"
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#include "pbd/progress.h"
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#ifdef COMPILER_MSVC
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#include <sys/utime.h>
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#else
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#include <utime.h>
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#endif
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#include <glibmm/convert.h>
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#include <glibmm/fileutils.h>
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#include <glibmm/miscutils.h>
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#include "ardour/runtime_functions.h"
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#include "ardour/sndfilesource.h"
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#include "ardour/sndfile_helpers.h"
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#include "ardour/utils.h"
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#include "ardour/session.h"
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#include "pbd/i18n.h"
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using namespace std;
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using namespace ARDOUR;
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using namespace PBD;
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using std::string;
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const Source::Flag SndFileSource::default_writable_flags = Source::Flag (
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Source::Writable |
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Source::Removable |
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Source::RemovableIfEmpty |
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Source::CanRename );
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SndFileSource::SndFileSource (Session& s, const XMLNode& node)
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: Source(s, node)
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, AudioFileSource (s, node)
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, _sndfile (0)
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, _broadcast_info (0)
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{
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init_sndfile ();
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assert (Glib::file_test (_path, Glib::FILE_TEST_EXISTS));
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existence_check ();
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if (open()) {
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throw failed_constructor ();
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}
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}
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/** Constructor for existing external-to-session files.
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Files created this way are never writable or removable
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*/
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SndFileSource::SndFileSource (Session& s, const string& path, int chn, Flag flags)
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: Source(s, DataType::AUDIO, path, flags)
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/* note that the origin of an external file is itself */
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, AudioFileSource (s, path, Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy)))
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, _sndfile (0)
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, _broadcast_info (0)
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{
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_channel = chn;
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init_sndfile ();
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assert (Glib::file_test (_path, Glib::FILE_TEST_EXISTS));
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existence_check ();
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if (open()) {
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throw failed_constructor ();
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}
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}
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/** This constructor is used to construct new internal-to-session files,
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not open existing ones.
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*/
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SndFileSource::SndFileSource (Session& s, const string& path, const string& origin,
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SampleFormat sfmt, HeaderFormat hf, samplecnt_t rate, Flag flags)
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: Source(s, DataType::AUDIO, path, flags)
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, AudioFileSource (s, path, origin, flags, sfmt, hf)
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, _sndfile (0)
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, _broadcast_info (0)
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{
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int fmt = 0;
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init_sndfile ();
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assert (!Glib::file_test (_path, Glib::FILE_TEST_EXISTS));
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existence_check ();
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_file_is_new = true;
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switch (hf) {
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case CAF:
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fmt = SF_FORMAT_CAF;
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_flags = Flag (_flags & ~Broadcast);
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break;
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case FLAC:
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fmt = SF_FORMAT_FLAC;
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if (sfmt == FormatFloat) {
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sfmt = FormatInt24;
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}
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_flags = Flag (_flags & ~Broadcast);
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break;
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case AIFF:
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fmt = SF_FORMAT_AIFF;
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_flags = Flag (_flags & ~Broadcast);
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break;
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case BWF:
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fmt = SF_FORMAT_WAV;
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_flags = Flag (_flags | Broadcast);
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break;
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case WAVE:
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fmt = SF_FORMAT_WAV;
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_flags = Flag (_flags & ~Broadcast);
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break;
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case WAVE64:
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fmt = SF_FORMAT_W64;
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_flags = Flag (_flags & ~Broadcast);
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break;
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case RF64_WAV:
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fmt = SF_FORMAT_RF64;
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_flags = Flag (_flags & ~Broadcast);
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_flags = Flag (_flags | RF64_RIFF);
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break;
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case MBWF:
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fmt = SF_FORMAT_RF64;
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_flags = Flag (_flags | Broadcast);
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_flags = Flag (_flags | RF64_RIFF);
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break;
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case RF64:
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fmt = SF_FORMAT_RF64;
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_flags = Flag (_flags & ~Broadcast);
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break;
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default:
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fatal << string_compose (_("programming error: %1"), X_("unsupported audio header format requested")) << endmsg;
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abort(); /*NOTREACHED*/
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break;
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}
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switch (sfmt) {
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case FormatFloat:
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fmt |= SF_FORMAT_FLOAT;
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break;
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case FormatInt24:
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fmt |= SF_FORMAT_PCM_24;
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break;
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case FormatInt16:
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fmt |= SF_FORMAT_PCM_16;
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break;
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}
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_info.channels = 1;
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_info.samplerate = rate;
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_info.format = fmt;
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/* normal mode: do not open the file here - do that in {read,write}_unlocked() as needed
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*/
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}
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/** Constructor to be called for recovering files being used for
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* capture. They are in-session, they already exist, they should not
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* be writable. They are an odd hybrid (from a constructor point of
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* view) of the previous two constructors.
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*/
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SndFileSource::SndFileSource (Session& s, const string& path, int chn)
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: Source (s, DataType::AUDIO, path, Flag (0))
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/* the final boolean argument is not used, its value is irrelevant. see audiofilesource.h for explanation */
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, AudioFileSource (s, path, Flag (0))
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, _sndfile (0)
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, _broadcast_info (0)
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{
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_channel = chn;
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init_sndfile ();
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assert (Glib::file_test (_path, Glib::FILE_TEST_EXISTS));
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existence_check ();
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if (open()) {
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throw failed_constructor ();
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}
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}
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/** Constructor to losslessly compress existing source to flac */
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SndFileSource::SndFileSource (Session& s, const AudioFileSource& other, const string& path, bool use16bits, Progress* progress)
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: Source(s, DataType::AUDIO, path, Flag ((other.flags () | default_writable_flags | NoPeakFile) & ~RF64_RIFF))
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, AudioFileSource (s, path, "", Flag ((other.flags () | default_writable_flags | NoPeakFile) & ~RF64_RIFF), /*unused*/ FormatFloat, /*unused*/ WAVE64)
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, _sndfile (0)
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, _broadcast_info (0)
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{
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if (other.readable_length_samples () == 0) {
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throw failed_constructor();
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}
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assert (!Glib::file_test (_path, Glib::FILE_TEST_EXISTS));
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_channel = 0;
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init_sndfile ();
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_file_is_new = true;
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_info.channels = 1;
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_info.samplerate = other.sample_rate ();
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_info.format = SF_FORMAT_FLAC | (use16bits ? SF_FORMAT_PCM_16 : SF_FORMAT_PCM_24);
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/* flac is either read or write -- never both,
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* so we need to special-case ::open () */
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#ifdef PLATFORM_WINDOWS
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int fd = g_open (_path.c_str(), O_CREAT | O_RDWR, 0644);
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#else
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int fd = ::open (_path.c_str(), O_CREAT | O_RDWR, 0644);
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#endif
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if (fd == -1) {
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throw failed_constructor();
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}
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_sndfile = sf_open_fd (fd, SFM_WRITE, &_info, true);
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if (_sndfile == 0) {
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throw failed_constructor();
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}
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#if 0
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/* setting flac compression quality above the default does not produce a significant size
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* improvement (not for large raw recordings anyway, the_CLA tests 2017-10-02, >> 250MB files,
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* ~1% smaller), but does have a significant encoding speed penalty.
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*
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* We still may expose this as option someday though, perhaps for opposite reason: "fast encoding"
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*/
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double flac_quality = 1; // libsndfile uses range 0..1 (mapped to flac 0..8), default is (5/8)
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if (sf_command (_sndfile, SFC_SET_COMPRESSION_LEVEL, &flac_quality, sizeof (double)) != SF_TRUE) {
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char errbuf[256];
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sf_error_str (_sndfile, errbuf, sizeof (errbuf) - 1);
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error << string_compose (_("Cannot set flac compression level: %1"), errbuf) << endmsg;
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}
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#endif
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Sample buf[8192];
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samplecnt_t off = 0;
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float peak = 0;
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float norm = 1.f;
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/* normalize before converting to fixed point, calc gain factor */
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samplecnt_t len = other.read (buf, off, 8192, other.channel ());
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while (len > 0) {
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peak = compute_peak (buf, len, peak);
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off += len;
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len = other.read (buf, off, 8192, other.channel ());
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if (progress) {
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progress->set_progress (0.5f * (float) off / other.readable_length_samples ());
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}
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}
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if (peak > 0) {
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_gain *= peak;
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norm = 1.f / peak;
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}
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/* copy file */
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off = 0;
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len = other.read (buf, off, 8192, other.channel ());
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while (len > 0) {
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if (norm != 1.f) {
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for (samplecnt_t i = 0; i < len; ++i) {
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buf[i] *= norm;
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}
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}
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write (buf, len);
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off += len;
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len = other.read (buf, off, 8192, other.channel ());
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if (progress) {
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progress->set_progress (0.5f + 0.5f * (float) off / other.readable_length_samples ());
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}
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}
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close ();
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/* copy ctime */
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GStatBuf statbuf;
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if (g_stat (other.path().c_str(), &statbuf) == 0 && statbuf.st_size > 0) {
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struct utimbuf tbuf;
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tbuf.actime = statbuf.st_atime;
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tbuf.modtime = statbuf.st_mtime; // = time ((time_t*) 0);
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g_utime (path.c_str(), &tbuf);
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}
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}
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void
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SndFileSource::init_sndfile ()
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{
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/* although libsndfile says we don't need to set this,
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valgrind and source code shows us that we do.
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*/
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memset (&_info, 0, sizeof(_info));
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AudioFileSource::HeaderPositionOffsetChanged.connect_same_thread (header_position_connection, boost::bind (&SndFileSource::handle_header_position_change, this));
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}
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void
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SndFileSource::close ()
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{
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if (_sndfile) {
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sf_close (_sndfile);
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_sndfile = 0;
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file_closed ();
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}
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}
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int
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SndFileSource::open ()
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{
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if (_sndfile) {
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return 0;
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}
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// We really only want to use g_open for all platforms but because of this
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// method(SndfileSource::open), the compiler(or at least GCC) is confused
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// because g_open will expand to "open" on non-POSIX systems and needs the
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// global namespace qualifier. The problem is since since C99 ::g_open will
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// apparently expand to ":: open"
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#ifdef PLATFORM_WINDOWS
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int fd = g_open (_path.c_str(), writable() ? O_CREAT | O_RDWR : O_RDONLY, writable() ? 0644 : 0444);
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#else
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int fd = ::open (_path.c_str(), writable() ? O_CREAT | O_RDWR : O_RDONLY, writable() ? 0644 : 0444);
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#endif
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if (fd == -1) {
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error << string_compose (
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_ ("SndFileSource: cannot open file \"%1\" for %2"),
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_path,
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(writable () ? "read+write" : "reading")) << endmsg;
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return -1;
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}
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if ((_info.format & SF_FORMAT_TYPEMASK ) == SF_FORMAT_FLAC) {
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_sndfile = sf_open_fd (fd, writable () ? SFM_WRITE : SFM_READ, &_info, true);
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} else {
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_sndfile = sf_open_fd (fd, writable() ? SFM_RDWR : SFM_READ, &_info, true);
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}
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if (_sndfile == 0) {
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return -1;
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}
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if (_channel >= _info.channels) {
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#ifndef HAVE_COREAUDIO
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error << string_compose(_("SndFileSource: file only contains %1 channels; %2 is invalid as a channel number"), _info.channels, _channel) << endmsg;
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#endif
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sf_close (_sndfile);
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_sndfile = 0;
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return -1;
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}
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_length = timecnt_t (_info.frames);
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#ifdef HAVE_RF64_RIFF
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if (_file_is_new && _length == 0 && writable()) {
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if (_flags & RF64_RIFF) {
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if (sf_command (_sndfile, SFC_RF64_AUTO_DOWNGRADE, 0, 0) != SF_TRUE) {
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char errbuf[256];
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sf_error_str (_sndfile, errbuf, sizeof (errbuf) - 1);
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error << string_compose (_("Cannot mark RF64 audio file for automatic downgrade to WAV: %1"), errbuf)
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<< endmsg;
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}
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}
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}
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#endif
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#ifdef LIBSNDFILE_SUPPORTS_CUES_AND_LABELS
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if (!writable()) {
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cerr << "Check for cues with " << _sndfile << endl;
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uint32_t cc;
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if (sf_command (_sndfile, SFC_GET_CUE_COUNT, &cc, sizeof (cc)) == SF_TRUE) {
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cerr << "cc is " << cc << endl;
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}
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SF_CUES cues;
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if (sf_command (_sndfile, SFC_GET_CUE, &cues, sizeof (SF_CUES)) == SF_TRUE) {
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cerr << "Found " << cues.cue_count << " cues !\n";
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for (size_t n = 0; n < cues.cue_count; ++n) {
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_cue_markers.insert (CueMarker (string_compose (X_("cue %1"), n+1), cues.cue_points[n].sample_offset));
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}
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}
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}
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#endif
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if (!_broadcast_info) {
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_broadcast_info = new BroadcastInfo;
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}
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bool bwf_info_exists = _broadcast_info->load_from_file (_sndfile);
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if (_file_is_new && _length == 0 && writable() && !bwf_info_exists) {
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/* newly created files will not have a BWF header at this point in time.
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* Import will have called Source::set_natural_position() if one exists
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* in the original. */
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header_position_offset = _natural_position.samples();
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}
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/* If a BWF header exists, set our _natural_position from it */
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if (bwf_info_exists) {
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set_natural_position (timepos_t (_broadcast_info->get_time_reference()));
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}
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if (_length != 0 && !bwf_info_exists) {
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delete _broadcast_info;
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_broadcast_info = 0;
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_flags = Flag (_flags & ~Broadcast);
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}
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/* Set the broadcast flag if the BWF info is already there. We need
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* this when recovering or using existing files.
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*/
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if (bwf_info_exists) {
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_flags = Flag (_flags | Broadcast);
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}
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if (writable()) {
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sf_command (_sndfile, SFC_SET_UPDATE_HEADER_AUTO, 0, SF_FALSE);
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if (_flags & Broadcast) {
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if (!_broadcast_info) {
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_broadcast_info = new BroadcastInfo;
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}
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_broadcast_info->set_from_session (_session, header_position_offset);
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_broadcast_info->set_description (string_compose ("BWF %1", _name));
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if (!_broadcast_info->write_to_file (_sndfile)) {
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error << string_compose (_("cannot set broadcast info for audio file %1 (%2); dropping broadcast info for this file"),
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_path, _broadcast_info->get_error())
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<< endmsg;
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_flags = Flag (_flags & ~Broadcast);
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delete _broadcast_info;
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_broadcast_info = 0;
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}
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}
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}
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return 0;
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}
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SndFileSource::~SndFileSource ()
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{
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close ();
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delete _broadcast_info;
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}
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float
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SndFileSource::sample_rate () const
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{
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return _info.samplerate;
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}
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samplecnt_t
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SndFileSource::read_unlocked (Sample *dst, samplepos_t start, samplecnt_t cnt) const
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{
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assert (cnt >= 0);
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samplecnt_t nread;
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float *ptr;
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samplecnt_t real_cnt;
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samplepos_t file_cnt;
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if (writable() && !_sndfile) {
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/* file has not been opened yet - nothing written to it */
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memset (dst, 0, sizeof (Sample) * cnt);
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return cnt;
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}
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|
|
|
if (const_cast<SndFileSource*>(this)->open()) {
|
|
error << string_compose (_("could not open file %1 for reading."), _path) << endmsg;
|
|
return 0;
|
|
}
|
|
|
|
if (start > _length.samples()) {
|
|
|
|
/* read starts beyond end of data, just memset to zero */
|
|
|
|
file_cnt = 0;
|
|
|
|
} else if (start + cnt > _length.samples()) {
|
|
|
|
/* read ends beyond end of data, read some, memset the rest */
|
|
|
|
file_cnt = _length.samples() - start;
|
|
|
|
} else {
|
|
|
|
/* read is entirely within data */
|
|
|
|
file_cnt = cnt;
|
|
}
|
|
|
|
assert (file_cnt >= 0);
|
|
|
|
if (file_cnt != cnt) {
|
|
samplepos_t delta = cnt - file_cnt;
|
|
memset (dst+file_cnt, 0, sizeof (Sample) * delta);
|
|
}
|
|
|
|
if (file_cnt) {
|
|
|
|
if (sf_seek (_sndfile, (sf_count_t) start, SEEK_SET|SFM_READ) != (sf_count_t) start) {
|
|
char errbuf[256];
|
|
sf_error_str (0, errbuf, sizeof (errbuf) - 1);
|
|
error << string_compose(_("SndFileSource: could not seek to sample %1 within %2 (%3)"), start, _name, errbuf) << endmsg;
|
|
return 0;
|
|
}
|
|
|
|
if (_info.channels == 1) {
|
|
samplecnt_t ret = sf_read_float (_sndfile, dst, file_cnt);
|
|
if (ret != file_cnt) {
|
|
char errbuf[256];
|
|
sf_error_str (0, errbuf, sizeof (errbuf) - 1);
|
|
error << string_compose(_("SndFileSource: @ %1 could not read %2 within %3 (%4) (len = %5, ret was %6)"), start, file_cnt, _name, errbuf, _length, ret) << endl;
|
|
}
|
|
if (_gain != 1.f) {
|
|
for (samplecnt_t i = 0; i < ret; ++i) {
|
|
dst[i] *= _gain;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
real_cnt = cnt * _info.channels;
|
|
|
|
Sample* interleave_buf = get_interleave_buffer (real_cnt);
|
|
|
|
nread = sf_read_float (_sndfile, interleave_buf, real_cnt);
|
|
ptr = interleave_buf + _channel;
|
|
nread /= _info.channels;
|
|
|
|
/* stride through the interleaved data */
|
|
|
|
if (_gain != 1.f) {
|
|
for (samplecnt_t n = 0; n < nread; ++n) {
|
|
dst[n] = *ptr * _gain;
|
|
ptr += _info.channels;
|
|
}
|
|
} else {
|
|
for (samplecnt_t n = 0; n < nread; ++n) {
|
|
dst[n] = *ptr;
|
|
ptr += _info.channels;
|
|
}
|
|
}
|
|
|
|
return nread;
|
|
}
|
|
|
|
samplecnt_t
|
|
SndFileSource::write_unlocked (Sample *data, samplecnt_t cnt)
|
|
{
|
|
if (open()) {
|
|
return 0; // failure
|
|
}
|
|
|
|
return nondestructive_write_unlocked (data, cnt);
|
|
}
|
|
|
|
samplecnt_t
|
|
SndFileSource::nondestructive_write_unlocked (Sample *data, samplecnt_t cnt)
|
|
{
|
|
if (!writable()) {
|
|
warning << string_compose (_("attempt to write a non-writable audio file source (%1)"), _path) << endmsg;
|
|
return 0;
|
|
}
|
|
|
|
if (_info.channels != 1) {
|
|
fatal << string_compose (_("programming error: %1 %2"), X_("SndFileSource::write called on non-mono file"), _path) << endmsg;
|
|
abort(); /*NOTREACHED*/
|
|
return 0;
|
|
}
|
|
|
|
assert (_length.time_domain() == Temporal::AudioTime);
|
|
samplepos_t sample_pos = _length.samples();
|
|
|
|
if (write_float (data, sample_pos, cnt) != cnt) {
|
|
return 0;
|
|
}
|
|
|
|
assert (_length.time_domain() == Temporal::AudioTime);
|
|
update_length (timepos_t (_length.samples() + cnt));
|
|
|
|
if (_build_peakfiles) {
|
|
compute_and_write_peaks (data, sample_pos, cnt, true, true);
|
|
}
|
|
|
|
return cnt;
|
|
}
|
|
|
|
int
|
|
SndFileSource::update_header (samplepos_t when, struct tm& now, time_t tnow)
|
|
{
|
|
set_natural_position (timepos_t (when));
|
|
|
|
if (_flags & Broadcast) {
|
|
if (setup_broadcast_info (when, now, tnow)) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return flush_header ();
|
|
}
|
|
|
|
int
|
|
SndFileSource::flush_header ()
|
|
{
|
|
if (!writable()) {
|
|
warning << string_compose (_("attempt to flush a non-writable audio file source (%1)"), _path) << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (_sndfile == 0) {
|
|
error << string_compose (_("could not allocate file %1 to write header"), _path) << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
int const r = sf_command (_sndfile, SFC_UPDATE_HEADER_NOW, 0, 0) != SF_TRUE;
|
|
|
|
return r;
|
|
}
|
|
|
|
void
|
|
SndFileSource::flush ()
|
|
{
|
|
if (!writable()) {
|
|
warning << string_compose (_("attempt to flush a non-writable audio file source (%1)"), _path) << endmsg;
|
|
return;
|
|
}
|
|
|
|
if (_sndfile == 0) {
|
|
error << string_compose (_("could not allocate file %1 to flush contents"), _path) << endmsg;
|
|
return;
|
|
}
|
|
|
|
// Hopefully everything OK
|
|
sf_write_sync (_sndfile);
|
|
}
|
|
|
|
int
|
|
SndFileSource::setup_broadcast_info (samplepos_t /*when*/, struct tm& now, time_t /*tnow*/)
|
|
{
|
|
if (!writable()) {
|
|
warning << string_compose (_("attempt to store broadcast info in a non-writable audio file source (%1)"), _path) << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (!_sndfile) {
|
|
warning << string_compose (_("attempt to set BWF info for an un-opened audio file source (%1)"), _path) << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (!(_flags & Broadcast) || !_broadcast_info) {
|
|
return 0;
|
|
}
|
|
|
|
_broadcast_info->set_originator_ref_from_session (_session);
|
|
_broadcast_info->set_origination_time (&now);
|
|
|
|
/* now update header position taking header offset into account */
|
|
|
|
set_header_natural_position ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
SndFileSource::set_header_natural_position ()
|
|
{
|
|
if (!(_flags & Broadcast)) {
|
|
return;
|
|
}
|
|
assert (_broadcast_info);
|
|
|
|
_broadcast_info->set_time_reference (_natural_position.samples());
|
|
|
|
if (_sndfile == 0 || !_broadcast_info->write_to_file (_sndfile)) {
|
|
error << string_compose (_("cannot set broadcast info for audio file %1 (%2); dropping broadcast info for this file"),
|
|
_path, _broadcast_info->get_error())
|
|
<< endmsg;
|
|
_flags = Flag (_flags & ~Broadcast);
|
|
delete _broadcast_info;
|
|
_broadcast_info = 0;
|
|
}
|
|
}
|
|
|
|
samplecnt_t
|
|
SndFileSource::write_float (Sample* data, samplepos_t sample_pos, samplecnt_t cnt)
|
|
{
|
|
if ((_info.format & SF_FORMAT_TYPEMASK ) == SF_FORMAT_FLAC) {
|
|
assert (_length == sample_pos);
|
|
}
|
|
else if (_sndfile == 0 || sf_seek (_sndfile, sample_pos, SEEK_SET|SFM_WRITE) < 0) {
|
|
char errbuf[256];
|
|
sf_error_str (0, errbuf, sizeof (errbuf) - 1);
|
|
error << string_compose (_("%1: cannot seek to %2 (libsndfile error: %3)"), _path, sample_pos, errbuf) << endmsg;
|
|
return 0;
|
|
}
|
|
|
|
if (sf_writef_float (_sndfile, data, cnt) != (ssize_t) cnt) {
|
|
return 0;
|
|
}
|
|
|
|
return cnt;
|
|
}
|
|
|
|
void
|
|
SndFileSource::set_natural_position (timepos_t const & pos)
|
|
{
|
|
AudioFileSource::set_natural_position (pos);
|
|
}
|
|
|
|
int
|
|
SndFileSource::get_soundfile_info (const string& path, SoundFileInfo& info, string& error_msg)
|
|
{
|
|
SNDFILE *sf;
|
|
SF_INFO sf_info;
|
|
BroadcastInfo binfo;
|
|
|
|
sf_info.format = 0; // libsndfile says to clear this before sf_open().
|
|
|
|
if (path.empty() || Glib::file_test(path, Glib::FILE_TEST_IS_DIR)) {
|
|
return false;
|
|
}
|
|
|
|
#ifdef PLATFORM_WINDOWS
|
|
int fd = g_open (path.c_str(), O_RDONLY, 0444);
|
|
#else
|
|
int fd = ::open (path.c_str(), O_RDONLY, 0444);
|
|
#endif
|
|
|
|
if (fd == -1) {
|
|
error << string_compose ( _("SndFileSource: cannot open file \"%1\" for reading"), path)
|
|
<< endmsg;
|
|
return false;
|
|
}
|
|
if ((sf = sf_open_fd (fd, SFM_READ, &sf_info, true)) == 0) {
|
|
char errbuf[1024];
|
|
error_msg = sf_error_str (0, errbuf, sizeof (errbuf) - 1);
|
|
return false;
|
|
}
|
|
|
|
info.samplerate = sf_info.samplerate;
|
|
info.channels = sf_info.channels;
|
|
info.length = sf_info.frames;
|
|
|
|
string major = sndfile_major_format(sf_info.format);
|
|
string minor = sndfile_minor_format(sf_info.format);
|
|
|
|
if (major.length() + minor.length() < 16) { /* arbitrary */
|
|
info.format_name = string_compose("%1/%2", major, minor);
|
|
} else {
|
|
info.format_name = string_compose("%1\n%2", major, minor);
|
|
}
|
|
|
|
info.timecode = binfo.load_from_file (sf) ? binfo.get_time_reference() : 0;
|
|
|
|
/* Mark Ogg/Vorbis files as not seekable, require conversion on import */
|
|
int const type = sf_info.format & SF_FORMAT_TYPEMASK;
|
|
int const sub = sf_info.format & SF_FORMAT_SUBMASK;
|
|
info.seekable = (type != SF_FORMAT_OGG && sub != SF_FORMAT_VORBIS);
|
|
|
|
sf_close (sf);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
SndFileSource::one_of_several_channels () const
|
|
{
|
|
return _info.channels > 1;
|
|
}
|
|
|
|
bool
|
|
SndFileSource::clamped_at_unity () const
|
|
{
|
|
int const type = _info.format & SF_FORMAT_TYPEMASK;
|
|
int const sub = _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);
|
|
}
|
|
|
|
void
|
|
SndFileSource::file_closed ()
|
|
{
|
|
/* stupid libsndfile updated the headers on close,
|
|
so touch the peakfile if it exists and has data
|
|
to make sure its time is as new as the audio
|
|
file.
|
|
*/
|
|
|
|
touch_peakfile ();
|
|
}
|
|
|
|
void
|
|
SndFileSource::set_path (const string& p)
|
|
{
|
|
FileSource::set_path (p);
|
|
}
|