2 Copyright (C) 2006 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "libardour-config.h"
31 #ifdef PLATFORM_WINDOWS
32 #include <glibmm/convert.h>
34 #include <glibmm/fileutils.h>
35 #include <glibmm/miscutils.h>
37 #include "ardour/sndfilesource.h"
38 #include "ardour/sndfile_helpers.h"
39 #include "ardour/utils.h"
40 #include "ardour/session.h"
45 using namespace ARDOUR;
49 gain_t* SndFileSource::out_coefficient = 0;
50 gain_t* SndFileSource::in_coefficient = 0;
51 framecnt_t SndFileSource::xfade_frames = 64;
52 const Source::Flag SndFileSource::default_writable_flags = Source::Flag (
55 Source::RemovableIfEmpty |
58 SndFileSource::SndFileSource (Session& s, const XMLNode& node)
60 , AudioFileSource (s, node)
63 , _capture_start (false)
64 , _capture_end (false)
70 assert (Glib::file_test (_path, Glib::FILE_TEST_EXISTS));
74 throw failed_constructor ();
78 /** Constructor for existing external-to-session files.
79 Files created this way are never writable or removable
81 SndFileSource::SndFileSource (Session& s, const string& path, int chn, Flag flags)
82 : Source(s, DataType::AUDIO, path, flags)
83 /* note that the origin of an external file is itself */
84 , AudioFileSource (s, path, Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy)))
87 , _capture_start (false)
88 , _capture_end (false)
96 assert (Glib::file_test (_path, Glib::FILE_TEST_EXISTS));
100 throw failed_constructor ();
104 /** This constructor is used to construct new internal-to-session files,
105 not open existing ones.
107 SndFileSource::SndFileSource (Session& s, const string& path, const string& origin,
108 SampleFormat sfmt, HeaderFormat hf, framecnt_t rate, Flag flags)
109 : Source(s, DataType::AUDIO, path, flags)
110 , AudioFileSource (s, path, origin, flags, sfmt, hf)
112 , _broadcast_info (0)
113 , _capture_start (false)
114 , _capture_end (false)
122 assert (!Glib::file_test (_path, Glib::FILE_TEST_EXISTS));
130 _flags = Flag (_flags & ~Broadcast);
134 fmt = SF_FORMAT_AIFF;
135 _flags = Flag (_flags & ~Broadcast);
140 _flags = Flag (_flags | Broadcast);
145 _flags = Flag (_flags & ~Broadcast);
150 _flags = Flag (_flags & ~Broadcast);
154 fatal << string_compose (_("programming error: %1"), X_("unsupported audio header format requested")) << endmsg;
155 abort(); /*NOTREACHED*/
162 fmt |= SF_FORMAT_FLOAT;
166 fmt |= SF_FORMAT_PCM_24;
170 fmt |= SF_FORMAT_PCM_16;
175 _info.samplerate = rate;
178 if (_flags & Destructive) {
180 throw failed_constructor();
183 /* normal mode: do not open the file here - do that in write_unlocked() as needed
188 /** Constructor to be called for recovering files being used for
189 * capture. They are in-session, they already exist, they should not
190 * be writable. They are an odd hybrid (from a constructor point of
191 * view) of the previous two constructors.
193 SndFileSource::SndFileSource (Session& s, const string& path, int chn)
194 : Source (s, DataType::AUDIO, path, Flag (0))
195 /* the final boolean argument is not used, its value is irrelevant. see audiofilesource.h for explanation */
196 , AudioFileSource (s, path, Flag (0))
198 , _broadcast_info (0)
199 , _capture_start (false)
200 , _capture_end (false)
208 assert (Glib::file_test (_path, Glib::FILE_TEST_EXISTS));
212 throw failed_constructor ();
217 SndFileSource::init_sndfile ()
219 /* although libsndfile says we don't need to set this,
220 valgrind and source code shows us that we do.
223 memset (&_info, 0, sizeof(_info));
226 xfade_buf = new Sample[xfade_frames];
227 _timeline_position = header_position_offset;
230 AudioFileSource::HeaderPositionOffsetChanged.connect_same_thread (header_position_connection, boost::bind (&SndFileSource::handle_header_position_change, this));
234 SndFileSource::open ()
242 #ifdef PLATFORM_WINDOWS
243 path_to_open = Glib::locale_from_utf8(_path);
245 path_to_open = _path;
248 _sndfile = sf_open (path_to_open.c_str(), writable() ? SFM_RDWR : SFM_READ, &_info);
252 sf_error_str (0, errbuf, sizeof (errbuf) - 1);
253 #ifndef HAVE_COREAUDIO
254 /* if we have CoreAudio, we will be falling back to that if libsndfile fails,
255 so we don't want to see this message.
258 cerr << "failed to open " << path_to_open << " with name " << _name << endl;
260 error << string_compose(_("SndFileSource: cannot open file \"%1\" for %2 (%3)"),
261 path_to_open, (writable() ? "read+write" : "reading"), errbuf) << endmsg;
266 if (_channel >= _info.channels) {
267 #ifndef HAVE_COREAUDIO
268 error << string_compose(_("SndFileSource: file only contains %1 channels; %2 is invalid as a channel number"), _info.channels, _channel) << endmsg;
275 _length = _info.frames;
277 if (!_broadcast_info) {
278 _broadcast_info = new BroadcastInfo;
281 bool bwf_info_exists = _broadcast_info->load_from_file (_sndfile);
283 if (_file_is_new && _length == 0 && writable() && !bwf_info_exists) {
284 /* newly created files will not have a BWF header at this point in time.
285 * Import will have called Source::set_timeline_position() if one exists
286 * in the original. */
287 header_position_offset = _timeline_position;
290 /* Set our timeline position to either the time reference from a BWF header or the current
291 start of the session.
293 set_timeline_position (bwf_info_exists ? _broadcast_info->get_time_reference() : header_position_offset);
295 if (_length != 0 && !bwf_info_exists) {
296 delete _broadcast_info;
298 _flags = Flag (_flags & ~Broadcast);
301 /* Set the broadcast flag if the BWF info is already there. We need
302 * this when recovering or using existing files.
305 if (bwf_info_exists) {
306 _flags = Flag (_flags | Broadcast);
310 sf_command (_sndfile, SFC_SET_UPDATE_HEADER_AUTO, 0, SF_FALSE);
312 if (_flags & Broadcast) {
314 if (!_broadcast_info) {
315 _broadcast_info = new BroadcastInfo;
318 _broadcast_info->set_from_session (_session, header_position_offset);
319 _broadcast_info->set_description (string_compose ("BWF %1", _name));
321 if (!_broadcast_info->write_to_file (_sndfile)) {
322 error << string_compose (_("cannot set broadcast info for audio file %1 (%2); dropping broadcast info for this file"),
323 path_to_open, _broadcast_info->get_error())
325 _flags = Flag (_flags & ~Broadcast);
326 delete _broadcast_info;
335 SndFileSource::~SndFileSource ()
341 delete _broadcast_info;
346 SndFileSource::sample_rate () const
348 return _info.samplerate;
352 SndFileSource::read_unlocked (Sample *dst, framepos_t start, framecnt_t cnt) const
361 if (writable() && !_sndfile) {
362 /* file has not been opened yet - nothing written to it */
363 memset (dst, 0, sizeof (Sample) * cnt);
368 error << string_compose (_("could not allocate file %1 for reading."), _path) << endmsg;
372 if (start > _length) {
374 /* read starts beyond end of data, just memset to zero */
378 } else if (start + cnt > _length) {
380 /* read ends beyond end of data, read some, memset the rest */
382 file_cnt = _length - start;
386 /* read is entirely within data */
391 assert (file_cnt >= 0);
393 if (file_cnt != cnt) {
394 framepos_t delta = cnt - file_cnt;
395 memset (dst+file_cnt, 0, sizeof (Sample) * delta);
400 if (sf_seek (_sndfile, (sf_count_t) start, SEEK_SET|SFM_READ) != (sf_count_t) start) {
402 sf_error_str (0, errbuf, sizeof (errbuf) - 1);
403 error << string_compose(_("SndFileSource: could not seek to frame %1 within %2 (%3)"), start, _name.val().substr (1), errbuf) << endmsg;
407 if (_info.channels == 1) {
408 framecnt_t ret = sf_read_float (_sndfile, dst, file_cnt);
409 if (ret != file_cnt) {
411 sf_error_str (0, errbuf, sizeof (errbuf) - 1);
412 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;
418 real_cnt = cnt * _info.channels;
420 Sample* interleave_buf = get_interleave_buffer (real_cnt);
422 nread = sf_read_float (_sndfile, interleave_buf, real_cnt);
423 ptr = interleave_buf + _channel;
424 nread /= _info.channels;
426 /* stride through the interleaved data */
428 for (framecnt_t n = 0; n < nread; ++n) {
430 ptr += _info.channels;
437 SndFileSource::write_unlocked (Sample *data, framecnt_t cnt)
444 return destructive_write_unlocked (data, cnt);
446 return nondestructive_write_unlocked (data, cnt);
451 SndFileSource::nondestructive_write_unlocked (Sample *data, framecnt_t cnt)
454 warning << string_compose (_("attempt to write a non-writable audio file source (%1)"), _path) << endmsg;
458 if (_info.channels != 1) {
459 fatal << string_compose (_("programming error: %1 %2"), X_("SndFileSource::write called on non-mono file"), _path) << endmsg;
460 abort(); /*NOTREACHED*/
464 framepos_t frame_pos = _length;
466 if (write_float (data, frame_pos, cnt) != cnt) {
470 update_length (_length + cnt);
472 if (_build_peakfiles) {
473 compute_and_write_peaks (data, frame_pos, cnt, true, true);
480 SndFileSource::destructive_write_unlocked (Sample* data, framecnt_t cnt)
483 warning << string_compose (_("attempt to write a non-writable audio file source (%1)"), _path) << endmsg;
487 if (_capture_start && _capture_end) {
489 /* start and end of capture both occur within the data we are writing,
490 so do both crossfades.
493 _capture_start = false;
494 _capture_end = false;
496 /* move to the correct location place */
497 file_pos = capture_start_frame - _timeline_position;
500 framecnt_t subcnt = cnt / 2;
501 framecnt_t ofilepos = file_pos;
504 if (crossfade (data, subcnt, 1) != subcnt) {
509 Sample * tmpdata = data + subcnt;
512 subcnt = cnt - subcnt;
513 if (crossfade (tmpdata, subcnt, 0) != subcnt) {
517 file_pos = ofilepos; // adjusted below
519 } else if (_capture_start) {
521 /* start of capture both occur within the data we are writing,
525 _capture_start = false;
526 _capture_end = false;
528 /* move to the correct location place */
529 file_pos = capture_start_frame - _timeline_position;
531 if (crossfade (data, cnt, 1) != cnt) {
535 } else if (_capture_end) {
537 /* end of capture both occur within the data we are writing,
541 _capture_start = false;
542 _capture_end = false;
544 if (crossfade (data, cnt, 0) != cnt) {
550 /* in the middle of recording */
552 if (write_float (data, file_pos, cnt) != cnt) {
557 update_length (file_pos + cnt);
559 if (_build_peakfiles) {
560 compute_and_write_peaks (data, file_pos, cnt, true, true);
569 SndFileSource::update_header (framepos_t when, struct tm& now, time_t tnow)
571 set_timeline_position (when);
573 if (_flags & Broadcast) {
574 if (setup_broadcast_info (when, now, tnow)) {
579 return flush_header ();
583 SndFileSource::flush_header ()
586 warning << string_compose (_("attempt to flush a non-writable audio file source (%1)"), _path) << endmsg;
591 error << string_compose (_("could not allocate file %1 to write header"), _path) << endmsg;
595 int const r = sf_command (_sndfile, SFC_UPDATE_HEADER_NOW, 0, 0) != SF_TRUE;
601 SndFileSource::flush ()
604 warning << string_compose (_("attempt to flush a non-writable audio file source (%1)"), _path) << endmsg;
609 error << string_compose (_("could not allocate file %1 to flush contents"), _path) << endmsg;
613 // Hopefully everything OK
614 sf_write_sync (_sndfile);
618 SndFileSource::setup_broadcast_info (framepos_t /*when*/, struct tm& now, time_t /*tnow*/)
621 warning << string_compose (_("attempt to store broadcast info in a non-writable audio file source (%1)"), _path) << endmsg;
626 warning << string_compose (_("attempt to set BWF info for an un-opened audio file source (%1)"), _path) << endmsg;
630 if (!(_flags & Broadcast) || !_broadcast_info) {
634 _broadcast_info->set_originator_ref_from_session (_session);
635 _broadcast_info->set_origination_time (&now);
637 /* now update header position taking header offset into account */
639 set_header_timeline_position ();
645 SndFileSource::set_header_timeline_position ()
647 if (!(_flags & Broadcast)) {
650 assert (_broadcast_info);
652 _broadcast_info->set_time_reference (_timeline_position);
654 if (_sndfile == 0 || !_broadcast_info->write_to_file (_sndfile)) {
655 error << string_compose (_("cannot set broadcast info for audio file %1 (%2); dropping broadcast info for this file"),
656 _path, _broadcast_info->get_error())
658 _flags = Flag (_flags & ~Broadcast);
659 delete _broadcast_info;
665 SndFileSource::write_float (Sample* data, framepos_t frame_pos, framecnt_t cnt)
667 if (_sndfile == 0 || sf_seek (_sndfile, frame_pos, SEEK_SET|SFM_WRITE) < 0) {
669 sf_error_str (0, errbuf, sizeof (errbuf) - 1);
670 error << string_compose (_("%1: cannot seek to %2 (libsndfile error: %3)"), _path, frame_pos, errbuf) << endmsg;
674 if (sf_writef_float (_sndfile, data, cnt) != (ssize_t) cnt) {
682 SndFileSource::natural_position() const
684 return _timeline_position;
688 SndFileSource::set_destructive (bool yn)
691 _flags = Flag (_flags | Writable | Destructive);
693 xfade_buf = new Sample[xfade_frames];
695 clear_capture_marks ();
696 _timeline_position = header_position_offset;
698 _flags = Flag (_flags & ~Destructive);
699 _timeline_position = 0;
700 /* leave xfade buf alone in case we need it again later */
707 SndFileSource::clear_capture_marks ()
709 _capture_start = false;
710 _capture_end = false;
713 /** @param pos Capture start position in session frames */
715 SndFileSource::mark_capture_start (framepos_t pos)
718 if (pos < _timeline_position) {
719 _capture_start = false;
721 _capture_start = true;
722 capture_start_frame = pos;
728 SndFileSource::mark_capture_end()
736 SndFileSource::crossfade (Sample* data, framecnt_t cnt, int fade_in)
738 framecnt_t xfade = min (xfade_frames, cnt);
739 framecnt_t nofade = cnt - xfade;
740 Sample* fade_data = 0;
741 framepos_t fade_position = 0; // in frames
746 fade_position = file_pos;
749 fade_position = file_pos + nofade;
750 fade_data = data + nofade;
753 if (fade_position > _length) {
755 /* read starts beyond end of data, just memset to zero */
759 } else if (fade_position + xfade > _length) {
761 /* read ends beyond end of data, read some, memset the rest */
763 file_cnt = _length - fade_position;
767 /* read is entirely within data */
774 if ((retval = read_unlocked (xfade_buf, fade_position, file_cnt)) != (ssize_t) file_cnt) {
775 if (retval >= 0 && errno == EAGAIN) {
776 /* XXX - can we really trust that errno is meaningful here? yes POSIX, i'm talking to you.
777 * short or no data there */
778 memset (xfade_buf, 0, xfade * sizeof(Sample));
780 error << string_compose(_("SndFileSource: \"%1\" bad read retval: %2 of %5 (%3: %4)"), _path, retval, errno, strerror (errno), xfade) << endmsg;
786 if (file_cnt != xfade) {
787 framecnt_t delta = xfade - file_cnt;
788 memset (xfade_buf+file_cnt, 0, sizeof (Sample) * delta);
791 if (nofade && !fade_in) {
792 if (write_float (data, file_pos, nofade) != nofade) {
793 error << string_compose(_("SndFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
798 if (xfade == xfade_frames) {
802 /* use the standard xfade curve */
806 /* fade new material in */
808 for (n = 0; n < xfade; ++n) {
809 xfade_buf[n] = (xfade_buf[n] * out_coefficient[n]) + (fade_data[n] * in_coefficient[n]);
815 /* fade new material out */
817 for (n = 0; n < xfade; ++n) {
818 xfade_buf[n] = (xfade_buf[n] * in_coefficient[n]) + (fade_data[n] * out_coefficient[n]);
822 } else if (xfade < xfade_frames) {
824 std::vector<gain_t> in(xfade);
825 std::vector<gain_t> out(xfade);
827 /* short xfade, compute custom curve */
829 compute_equal_power_fades (xfade, &in[0], &out[0]);
831 for (framecnt_t n = 0; n < xfade; ++n) {
832 xfade_buf[n] = (xfade_buf[n] * out[n]) + (fade_data[n] * in[n]);
837 /* long xfade length, has to be computed across several calls */
842 if (write_float (xfade_buf, fade_position, xfade) != xfade) {
843 error << string_compose(_("SndFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
848 if (fade_in && nofade) {
849 if (write_float (data + xfade, file_pos + xfade, nofade) != nofade) {
850 error << string_compose(_("SndFileSource: \"%1\" bad write (%2)"), _path, strerror (errno)) << endmsg;
859 SndFileSource::last_capture_start_frame () const
862 return capture_start_frame;
869 SndFileSource::handle_header_position_change ()
872 if ( _length != 0 ) {
873 error << string_compose(_("Filesource: start time is already set for existing file (%1): Cannot change start time."), _path ) << endmsg;
874 //in the future, pop up a dialog here that allows user to regenerate file with new start offset
875 } else if (writable()) {
876 _timeline_position = header_position_offset;
877 set_header_timeline_position (); //this will get flushed if/when the file is recorded to
883 SndFileSource::setup_standard_crossfades (Session const & s, framecnt_t rate)
885 /* This static method is assumed to have been called by the Session
886 before any DFS's are created.
889 xfade_frames = (framecnt_t) floor ((s.config.get_destructive_xfade_msecs () / 1000.0) * rate);
891 delete [] out_coefficient;
892 delete [] in_coefficient;
894 out_coefficient = new gain_t[xfade_frames];
895 in_coefficient = new gain_t[xfade_frames];
897 compute_equal_power_fades (xfade_frames, in_coefficient, out_coefficient);
901 SndFileSource::set_timeline_position (framepos_t pos)
903 // destructive track timeline postion does not change
904 // except at instantion or when header_position_offset
905 // (session start) changes
907 if (!destructive()) {
908 AudioFileSource::set_timeline_position (pos);
913 SndFileSource::get_soundfile_info (const string& path, SoundFileInfo& info, string& error_msg)
919 sf_info.format = 0; // libsndfile says to clear this before sf_open().
921 if ((sf = sf_open (const_cast<char*>(path.c_str()), SFM_READ, &sf_info)) == 0) {
923 error_msg = sf_error_str (0, errbuf, sizeof (errbuf) - 1);
927 info.samplerate = sf_info.samplerate;
928 info.channels = sf_info.channels;
929 info.length = sf_info.frames;
931 string major = sndfile_major_format(sf_info.format);
932 string minor = sndfile_minor_format(sf_info.format);
934 if (major.length() + minor.length() < 16) { /* arbitrary */
935 info.format_name = string_compose("%1/%2", major, minor);
937 info.format_name = string_compose("%1\n%2", major, minor);
940 info.timecode = binfo.load_from_file (sf) ? binfo.get_time_reference() : 0;
948 SndFileSource::one_of_several_channels () const
950 return _info.channels > 1;
954 SndFileSource::clamped_at_unity () const
956 int const type = _info.format & SF_FORMAT_TYPEMASK;
957 int const sub = _info.format & SF_FORMAT_SUBMASK;
958 /* XXX: this may not be the full list of formats that are unclamped */
959 return (sub != SF_FORMAT_FLOAT && sub != SF_FORMAT_DOUBLE && type != SF_FORMAT_OGG);
963 SndFileSource::file_closed ()
965 /* stupid libsndfile updated the headers on close,
966 so touch the peakfile if it exists and has data
967 to make sure its time is as new as the audio
975 SndFileSource::set_path (const string& p)
977 FileSource::set_path (p);