Paul Davis
1c8ad40339
libsndfile (can|may) update the headers at close, which can lead to the file being marked newer than the peakfile, thus causing a rebuild of the peakfile at session (re)load. Originally detected by Grygorii
1045 lines
25 KiB
C++
1045 lines
25 KiB
C++
/*
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Copyright (C) 2006 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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#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 <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/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 "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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gain_t* SndFileSource::out_coefficient = 0;
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gain_t* SndFileSource::in_coefficient = 0;
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framecnt_t SndFileSource::xfade_frames = 64;
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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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, _capture_start (false)
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, _capture_end (false)
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, file_pos (0)
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, xfade_buf (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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, _capture_start (false)
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, _capture_end (false)
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, file_pos (0)
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, xfade_buf (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, framecnt_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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, _capture_start (false)
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, _capture_end (false)
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, file_pos (0)
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, xfade_buf (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 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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if (_flags & Destructive) {
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if (open()) {
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throw failed_constructor();
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}
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} else {
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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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}
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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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, _capture_start (false)
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, _capture_end (false)
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, file_pos (0)
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, xfade_buf (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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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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if (destructive()) {
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xfade_buf = new Sample[xfade_frames];
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_timeline_position = header_position_offset;
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}
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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 qualifer. 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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_sndfile = sf_open_fd (fd, writable() ? SFM_RDWR : SFM_READ, &_info, true);
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if (_sndfile == 0) {
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char errbuf[1024];
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sf_error_str (0, errbuf, sizeof (errbuf) - 1);
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#ifndef HAVE_COREAUDIO
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/* if we have CoreAudio, we will be falling back to that if libsndfile fails,
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so we don't want to see this message.
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*/
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cerr << "failed to open " << _path << " with name " << _name << endl;
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error << string_compose(_("SndFileSource: cannot open file \"%1\" for %2 (%3)"),
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_path, (writable() ? "read+write" : "reading"), errbuf) << endmsg;
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#endif
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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 = _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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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_timeline_position() if one exists
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* in the original. */
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header_position_offset = _timeline_position;
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}
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/* Set our timeline position to either the time reference from a BWF header or the current
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start of the session.
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*/
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set_timeline_position (bwf_info_exists ? _broadcast_info->get_time_reference() : header_position_offset);
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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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delete [] xfade_buf;
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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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framecnt_t
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SndFileSource::read_unlocked (Sample *dst, framepos_t start, framecnt_t cnt) const
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{
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assert (cnt >= 0);
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framecnt_t nread;
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float *ptr;
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framecnt_t real_cnt;
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framepos_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()) {
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error << string_compose (_("could not open file %1 for reading."), _path) << endmsg;
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return 0;
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}
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if (start > _length) {
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/* read starts beyond end of data, just memset to zero */
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file_cnt = 0;
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} else if (start + cnt > _length) {
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/* read ends beyond end of data, read some, memset the rest */
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file_cnt = _length - start;
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} else {
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/* read is entirely within data */
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file_cnt = cnt;
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}
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assert (file_cnt >= 0);
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if (file_cnt != cnt) {
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framepos_t delta = cnt - file_cnt;
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memset (dst+file_cnt, 0, sizeof (Sample) * delta);
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}
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if (file_cnt) {
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if (sf_seek (_sndfile, (sf_count_t) start, SEEK_SET|SFM_READ) != (sf_count_t) start) {
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char errbuf[256];
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sf_error_str (0, errbuf, sizeof (errbuf) - 1);
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error << string_compose(_("SndFileSource: could not seek to frame %1 within %2 (%3)"), start, _name.val().substr (1), errbuf) << endmsg;
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return 0;
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}
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if (_info.channels == 1) {
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framecnt_t ret = sf_read_float (_sndfile, dst, file_cnt);
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if (ret != file_cnt) {
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char errbuf[256];
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sf_error_str (0, errbuf, sizeof (errbuf) - 1);
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error << string_compose(_("SndFileSource: @ %1 could not read %2 within %3 (%4) (len = %5, ret was %6)"), start, file_cnt, _name.val().substr (1), errbuf, _length, ret) << endl;
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}
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return ret;
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}
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}
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real_cnt = cnt * _info.channels;
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Sample* interleave_buf = get_interleave_buffer (real_cnt);
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nread = sf_read_float (_sndfile, interleave_buf, real_cnt);
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ptr = interleave_buf + _channel;
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nread /= _info.channels;
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/* stride through the interleaved data */
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for (framecnt_t n = 0; n < nread; ++n) {
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dst[n] = *ptr;
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ptr += _info.channels;
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}
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return nread;
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}
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framecnt_t
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SndFileSource::write_unlocked (Sample *data, framecnt_t cnt)
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{
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if (open()) {
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return 0; // failure
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}
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if (destructive()) {
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return destructive_write_unlocked (data, cnt);
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} else {
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return nondestructive_write_unlocked (data, cnt);
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}
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}
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framecnt_t
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SndFileSource::nondestructive_write_unlocked (Sample *data, framecnt_t cnt)
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{
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if (!writable()) {
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warning << string_compose (_("attempt to write a non-writable audio file source (%1)"), _path) << endmsg;
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return 0;
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}
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if (_info.channels != 1) {
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fatal << string_compose (_("programming error: %1 %2"), X_("SndFileSource::write called on non-mono file"), _path) << endmsg;
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abort(); /*NOTREACHED*/
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return 0;
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}
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framepos_t frame_pos = _length;
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if (write_float (data, frame_pos, cnt) != cnt) {
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return 0;
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}
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update_length (_length + cnt);
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if (_build_peakfiles) {
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compute_and_write_peaks (data, frame_pos, cnt, true, true);
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}
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return cnt;
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}
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framecnt_t
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SndFileSource::destructive_write_unlocked (Sample* data, framecnt_t cnt)
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{
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if (!writable()) {
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warning << string_compose (_("attempt to write a non-writable audio file source (%1)"), _path) << endmsg;
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return 0;
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}
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if (_capture_start && _capture_end) {
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/* start and end of capture both occur within the data we are writing,
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so do both crossfades.
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*/
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|
|
_capture_start = false;
|
|
_capture_end = false;
|
|
|
|
/* move to the correct location place */
|
|
file_pos = capture_start_frame - _timeline_position;
|
|
|
|
// split cnt in half
|
|
framecnt_t subcnt = cnt / 2;
|
|
framecnt_t ofilepos = file_pos;
|
|
|
|
// fade in
|
|
if (crossfade (data, subcnt, 1) != subcnt) {
|
|
return 0;
|
|
}
|
|
|
|
file_pos += subcnt;
|
|
Sample * tmpdata = data + subcnt;
|
|
|
|
// fade out
|
|
subcnt = cnt - subcnt;
|
|
if (crossfade (tmpdata, subcnt, 0) != subcnt) {
|
|
return 0;
|
|
}
|
|
|
|
file_pos = ofilepos; // adjusted below
|
|
|
|
} else if (_capture_start) {
|
|
|
|
/* start of capture both occur within the data we are writing,
|
|
so do the fade in
|
|
*/
|
|
|
|
_capture_start = false;
|
|
_capture_end = false;
|
|
|
|
/* move to the correct location place */
|
|
file_pos = capture_start_frame - _timeline_position;
|
|
|
|
if (crossfade (data, cnt, 1) != cnt) {
|
|
return 0;
|
|
}
|
|
|
|
} else if (_capture_end) {
|
|
|
|
/* end of capture both occur within the data we are writing,
|
|
so do the fade out
|
|
*/
|
|
|
|
_capture_start = false;
|
|
_capture_end = false;
|
|
|
|
if (crossfade (data, cnt, 0) != cnt) {
|
|
return 0;
|
|
}
|
|
|
|
} else {
|
|
|
|
/* in the middle of recording */
|
|
|
|
if (write_float (data, file_pos, cnt) != cnt) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
update_length (file_pos + cnt);
|
|
|
|
if (_build_peakfiles) {
|
|
compute_and_write_peaks (data, file_pos, cnt, true, true);
|
|
}
|
|
|
|
file_pos += cnt;
|
|
|
|
return cnt;
|
|
}
|
|
|
|
int
|
|
SndFileSource::update_header (framepos_t when, struct tm& now, time_t tnow)
|
|
{
|
|
set_timeline_position (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 (framepos_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_timeline_position ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
SndFileSource::set_header_timeline_position ()
|
|
{
|
|
if (!(_flags & Broadcast)) {
|
|
return;
|
|
}
|
|
assert (_broadcast_info);
|
|
|
|
_broadcast_info->set_time_reference (_timeline_position);
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
framecnt_t
|
|
SndFileSource::write_float (Sample* data, framepos_t frame_pos, framecnt_t cnt)
|
|
{
|
|
if (_sndfile == 0 || sf_seek (_sndfile, frame_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, frame_pos, errbuf) << endmsg;
|
|
return 0;
|
|
}
|
|
|
|
if (sf_writef_float (_sndfile, data, cnt) != (ssize_t) cnt) {
|
|
return 0;
|
|
}
|
|
|
|
return cnt;
|
|
}
|
|
|
|
framepos_t
|
|
SndFileSource::natural_position() const
|
|
{
|
|
return _timeline_position;
|
|
}
|
|
|
|
bool
|
|
SndFileSource::set_destructive (bool yn)
|
|
{
|
|
if (yn) {
|
|
_flags = Flag (_flags | Writable | Destructive);
|
|
if (!xfade_buf) {
|
|
xfade_buf = new Sample[xfade_frames];
|
|
}
|
|
clear_capture_marks ();
|
|
_timeline_position = header_position_offset;
|
|
} else {
|
|
_flags = Flag (_flags & ~Destructive);
|
|
_timeline_position = 0;
|
|
/* leave xfade buf alone in case we need it again later */
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
SndFileSource::clear_capture_marks ()
|
|
{
|
|
_capture_start = false;
|
|
_capture_end = false;
|
|
}
|
|
|
|
/** @param pos Capture start position in session frames */
|
|
void
|
|
SndFileSource::mark_capture_start (framepos_t pos)
|
|
{
|
|
if (destructive()) {
|
|
if (pos < _timeline_position) {
|
|
_capture_start = false;
|
|
} else {
|
|
_capture_start = true;
|
|
capture_start_frame = pos;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
SndFileSource::mark_capture_end()
|
|
{
|
|
if (destructive()) {
|
|
_capture_end = true;
|
|
}
|
|
}
|
|
|
|
framecnt_t
|
|
SndFileSource::crossfade (Sample* data, framecnt_t cnt, int fade_in)
|
|
{
|
|
framecnt_t xfade = min (xfade_frames, cnt);
|
|
framecnt_t nofade = cnt - xfade;
|
|
Sample* fade_data = 0;
|
|
framepos_t fade_position = 0; // in frames
|
|
ssize_t retval;
|
|
framecnt_t file_cnt;
|
|
|
|
if (fade_in) {
|
|
fade_position = file_pos;
|
|
fade_data = data;
|
|
} else {
|
|
fade_position = file_pos + nofade;
|
|
fade_data = data + nofade;
|
|
}
|
|
|
|
if (fade_position > _length) {
|
|
|
|
/* read starts beyond end of data, just memset to zero */
|
|
|
|
file_cnt = 0;
|
|
|
|
} else if (fade_position + xfade > _length) {
|
|
|
|
/* read ends beyond end of data, read some, memset the rest */
|
|
|
|
file_cnt = _length - fade_position;
|
|
|
|
} else {
|
|
|
|
/* read is entirely within data */
|
|
|
|
file_cnt = xfade;
|
|
}
|
|
|
|
if (file_cnt) {
|
|
|
|
if ((retval = read_unlocked (xfade_buf, fade_position, file_cnt)) != (ssize_t) file_cnt) {
|
|
if (retval >= 0 && errno == EAGAIN) {
|
|
/* XXX - can we really trust that errno is meaningful here? yes POSIX, i'm talking to you.
|
|
* short or no data there */
|
|
memset (xfade_buf, 0, xfade * sizeof(Sample));
|
|
} else {
|
|
error << string_compose(_("SndFileSource: \"%1\" bad read retval: %2 of %5 (%3: %4)"), _path, retval, errno, strerror (errno), xfade) << endmsg;
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (file_cnt != xfade) {
|
|
framecnt_t delta = xfade - file_cnt;
|
|
memset (xfade_buf+file_cnt, 0, sizeof (Sample) * delta);
|
|
}
|
|
|
|
if (nofade && !fade_in) {
|
|
if (write_float (data, file_pos, nofade) != nofade) {
|
|
error << string_compose(_("SndFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (xfade == xfade_frames) {
|
|
|
|
framecnt_t n;
|
|
|
|
/* use the standard xfade curve */
|
|
|
|
if (fade_in) {
|
|
|
|
/* fade new material in */
|
|
|
|
for (n = 0; n < xfade; ++n) {
|
|
xfade_buf[n] = (xfade_buf[n] * out_coefficient[n]) + (fade_data[n] * in_coefficient[n]);
|
|
}
|
|
|
|
} else {
|
|
|
|
|
|
/* fade new material out */
|
|
|
|
for (n = 0; n < xfade; ++n) {
|
|
xfade_buf[n] = (xfade_buf[n] * in_coefficient[n]) + (fade_data[n] * out_coefficient[n]);
|
|
}
|
|
}
|
|
|
|
} else if (xfade < xfade_frames) {
|
|
|
|
std::vector<gain_t> in(xfade);
|
|
std::vector<gain_t> out(xfade);
|
|
|
|
/* short xfade, compute custom curve */
|
|
|
|
compute_equal_power_fades (xfade, &in[0], &out[0]);
|
|
|
|
for (framecnt_t n = 0; n < xfade; ++n) {
|
|
xfade_buf[n] = (xfade_buf[n] * out[n]) + (fade_data[n] * in[n]);
|
|
}
|
|
|
|
} else if (xfade) {
|
|
|
|
/* long xfade length, has to be computed across several calls */
|
|
|
|
}
|
|
|
|
if (xfade) {
|
|
if (write_float (xfade_buf, fade_position, xfade) != xfade) {
|
|
error << string_compose(_("SndFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (fade_in && nofade) {
|
|
if (write_float (data + xfade, file_pos + xfade, nofade) != nofade) {
|
|
error << string_compose(_("SndFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return cnt;
|
|
}
|
|
|
|
framepos_t
|
|
SndFileSource::last_capture_start_frame () const
|
|
{
|
|
if (destructive()) {
|
|
return capture_start_frame;
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void
|
|
SndFileSource::handle_header_position_change ()
|
|
{
|
|
if (destructive()) {
|
|
if ( _length != 0 ) {
|
|
error << string_compose(_("Filesource: start time is already set for existing file (%1): Cannot change start time."), _path ) << endmsg;
|
|
//in the future, pop up a dialog here that allows user to regenerate file with new start offset
|
|
} else if (writable()) {
|
|
_timeline_position = header_position_offset;
|
|
set_header_timeline_position (); //this will get flushed if/when the file is recorded to
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
SndFileSource::setup_standard_crossfades (Session const & s, framecnt_t rate)
|
|
{
|
|
/* This static method is assumed to have been called by the Session
|
|
before any DFS's are created.
|
|
*/
|
|
|
|
xfade_frames = (framecnt_t) floor ((s.config.get_destructive_xfade_msecs () / 1000.0) * rate);
|
|
|
|
delete [] out_coefficient;
|
|
delete [] in_coefficient;
|
|
|
|
out_coefficient = new gain_t[xfade_frames];
|
|
in_coefficient = new gain_t[xfade_frames];
|
|
|
|
compute_equal_power_fades (xfade_frames, in_coefficient, out_coefficient);
|
|
}
|
|
|
|
void
|
|
SndFileSource::set_timeline_position (framepos_t pos)
|
|
{
|
|
// destructive track timeline postion does not change
|
|
// except at instantion or when header_position_offset
|
|
// (session start) changes
|
|
|
|
if (!destructive()) {
|
|
AudioFileSource::set_timeline_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;
|
|
|
|
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);
|
|
}
|
|
|