2 Copyright (C) 2006 Paul Davis
3 Written by Dave Robillard, 2006
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <pbd/mountpoint.h>
29 #include <pbd/pathscanner.h>
30 #include <pbd/stl_delete.h>
31 #include <pbd/strsplit.h>
33 #include <glibmm/miscutils.h>
35 #include <ardour/smf_source.h>
36 #include <ardour/session.h>
37 #include <ardour/midi_ring_buffer.h>
38 #include <ardour/midi_util.h>
42 using namespace ARDOUR;
44 string SMFSource::_search_path;
46 /*sigc::signal<void,struct tm*, time_t> SMFSource::HeaderPositionOffsetChanged;
47 bool SMFSource::header_position_negative;
48 uint64_t SMFSource::header_position_offset;
51 SMFSource::SMFSource (std::string path, Flag flags)
52 : MidiSource (region_name_from_path(path))
54 , _flags (Flag(flags | Writable)) // FIXME: this needs to be writable for now
55 , _allow_remove_if_empty(true)
56 , _timeline_position (0)
59 , _track_size(4) // 4 bytes for the ever-present EOT event
62 /* constructor used for new internal-to-session files. file cannot exist */
64 if (init (path, false)) {
65 throw failed_constructor ();
69 throw failed_constructor ();
72 assert(_name.find("/") == string::npos);
74 SourceCreated (this); /* EMIT SIGNAL */
77 SMFSource::SMFSource (const XMLNode& node)
80 , _flags (Flag (Writable|CanRename))
81 , _allow_remove_if_empty(true)
82 , _timeline_position (0)
85 , _track_size(4) // 4 bytes for the ever-present EOT event
88 /* constructor used for existing internal-to-session files. file must exist */
90 if (set_state (node)) {
91 throw failed_constructor ();
94 if (init (_name, true)) {
95 throw failed_constructor ();
99 throw failed_constructor ();
102 assert(_name.find("/") == string::npos);
104 SourceCreated (this); /* EMIT SIGNAL */
107 SMFSource::~SMFSource ()
110 unlink (_path.c_str());
115 SMFSource::removable () const
117 return (_flags & Removable) && ((_flags & RemoveAtDestroy) ||
118 ((_flags & RemovableIfEmpty) && is_empty (_path)));
122 SMFSource::init (string pathstr, bool must_exist)
126 if (!find (pathstr, must_exist, is_new)) {
127 cerr << "cannot find " << pathstr << " with me = " << must_exist << endl;
131 if (is_new && must_exist) {
135 assert(_name.find("/") == string::npos);
142 cerr << "Opening SMF file " << path() << " writeable: " << writable() << endl;
144 assert(writable()); // FIXME;
146 _fd = fopen(path().c_str(), "r+");
148 // File already exists
150 fseek(_fd, _header_size - 4, 0);
151 uint32_t track_size_be = 0;
152 fread(&track_size_be, 4, 1, _fd);
153 _track_size = GUINT32_FROM_BE(track_size_be);
154 cerr << "SMF - read track size " << _track_size;
156 // We're making a new file
158 _fd = fopen(path().c_str(), "w+");
161 // write a tentative header just to pad things out so writing happens in the right spot
163 // FIXME: write the footer here too so it's a valid SMF (screw up writing ATM though)
166 return (_fd == 0) ? -1 : 0;
170 SMFSource::update_header (jack_nframes_t when, struct tm&, time_t)
172 _timeline_position = when;
173 return flush_header();
177 SMFSource::flush_header ()
179 // FIXME: write timeline position somehow?
181 cerr << "SMF Flushing header\n";
185 const uint16_t type = GUINT16_TO_BE(0); // SMF Type 0 (single track)
186 const uint16_t ntracks = GUINT16_TO_BE(1); // Number of tracks (always 1 for Type 0)
187 const uint16_t division = GUINT16_TO_BE(1920); // FIXME FIXME FIXME PPQN
190 memcpy(data, &type, 2);
191 memcpy(data+2, &ntracks, 2);
192 memcpy(data+4, &division, 2);
194 _fd = freopen(path().c_str(), "r+", _fd);
197 write_chunk("MThd", 6, data);
198 //if (_track_size > 0) {
199 write_chunk_header("MTrk", _track_size);
208 SMFSource::flush_footer()
210 cerr << "SMF - Writing EOT\n";
212 fseek(_fd, 0, SEEK_END);
213 write_var_len(1); // whatever...
214 char eot[4] = { 0xFF, 0x2F, 0x00 }; // end-of-track meta-event
215 fwrite(eot, 1, 4, _fd);
220 /** Returns the offset of the first event in the file with a time past @a start,
221 * relative to the start of the source.
223 * Returns -1 if not found.
227 SMFSource::find_first_event_after(jack_nframes_t start)
229 // FIXME: obviously this is slooow
231 fseek(_fd, _header_size, 0);
233 while ( ! feof(_fd) ) {
234 const uint32_t delta_time = read_var_len();
236 if (delta_time > start)
244 /** Read an event from the current position in file.
246 * File position MUST be at the beginning of a delta time, or this will die very messily.
247 * ev.buffer must be of size ev.size, and large enough for the event. The returned event
248 * will have it's time field set to it's delta time (so it's the caller's responsibility
249 * to calculate a real time for the event).
251 * Returns event length (including status byte) on success, 0 if event was
252 * skipped (eg a meta event), or -1 on EOF (or end of track).
255 SMFSource::read_event(MidiEvent& ev) const
257 // - 4 is for the EOT event, which we don't actually want to read
258 //if (feof(_fd) || ftell(_fd) >= _header_size + _track_size - 4) {
263 uint32_t delta_time = read_var_len();
264 int status = fgetc(_fd);
265 assert(status != EOF); // FIXME die gracefully
266 if (status == 0xFF) {
268 int type = fgetc(_fd);
269 if ((unsigned char)type == 0x2F) {
270 cerr << "SMF - hit EOT" << endl;
271 return -1; // we hit the logical EOF anyway...
274 ev.time = delta_time; // this is needed regardless
279 ev.buffer[0] = (unsigned char)status;
280 ev.size = midi_event_size(ev.buffer[0]) + 1;
281 fread(ev.buffer+1, 1, ev.size - 1, _fd);
282 ev.time = delta_time;
284 printf("SMF - read event, delta = %u, size = %zu, data = ",
285 delta_time, ev.size);
286 for (size_t i=0; i < ev.size; ++i) {
287 printf("%X ", ev.buffer[i]);
295 SMFSource::read_unlocked (MidiRingBuffer& dst, jack_nframes_t start, jack_nframes_t cnt, jack_nframes_t stamp_offset) const
297 //cerr << "SMF - read " << start << " -- " << cnt;
299 jack_nframes_t time = 0;
302 unsigned char ev_buf[MidiBuffer::max_event_size()];
305 ev.size = MidiBuffer::max_event_size();
308 // FIXME: it would be an impressive feat to actually make this any slower :)
310 fseek(_fd, _header_size, 0);
313 int ret = read_event(ev);
314 if (ret == -1) { // EOF
315 //cerr << "SMF - EOF\n";
319 if (ret == 0) { // meta-event (skipped)
320 //cerr << "SMF - META\n";
321 time += ev.time; // just accumulate delta time and ignore event
325 time += ev.time; // accumulate delta time
326 ev.time = time; // set ev.time to actual time (relative to source start)
328 if (ev.time >= start) {
329 if (ev.time > start + cnt) {
332 ev.time += stamp_offset;
338 cerr << "SMF pretending to read" << endl;
343 const char note = rand()%30 + 30;
346 ev.time = start+1; // FIXME: bug at 0?
356 ev.time = start + (jack_nframes_t)(cnt * 8.0/10.0);
371 SMFSource::write_unlocked (MidiRingBuffer& src, jack_nframes_t cnt)
373 //cerr << "SMF WRITE -- " << _length << "--" << cnt << endl;
375 MidiBuffer buf(1024); // FIXME: allocation, size?
376 src.read(buf, /*_length*/0, _length + cnt); // FIXME?
378 fseek(_fd, 0, SEEK_END);
380 // FIXME: start of source time?
382 for (size_t i=0; i < buf.size(); ++i) {
383 const MidiEvent& ev = buf[i];
384 assert(ev.time >= _timeline_position);
385 uint32_t delta_time = (ev.time - _timeline_position) - _last_ev_time;
387 printf("SMF - writing event, delta = %u, size = %zu, data = ",
388 delta_time, ev.size);
389 for (size_t i=0; i < ev.size; ++i) {
390 printf("%X ", ev.buffer[i]);
394 size_t stamp_size = write_var_len(delta_time);
395 fwrite(ev.buffer, 1, ev.size, _fd);
396 _last_ev_time += delta_time;
397 _track_size += stamp_size + ev.size;
402 if (buf.size() > 0) {
403 ViewDataRangeReady (_length, cnt); /* EMIT SIGNAL */
406 update_length(_length, cnt);
411 SMFSource::get_state ()
413 XMLNode& root (MidiSource::get_state());
415 snprintf (buf, sizeof (buf), "0x%x", (int)_flags);
416 root.add_property ("flags", buf);
421 SMFSource::set_state (const XMLNode& node)
423 const XMLProperty* prop;
425 if (MidiSource::set_state (node)) {
429 if ((prop = node.property (X_("flags"))) != 0) {
432 sscanf (prop->value().c_str(), "0x%x", &ival);
433 _flags = Flag (ival);
441 assert(_name.find("/") == string::npos);
447 SMFSource::mark_for_remove ()
452 _flags = Flag (_flags | RemoveAtDestroy);
456 SMFSource::mark_streaming_write_completed ()
465 Glib::Mutex::Lock lm (_lock);
468 next_peak_clear_should_notify = true;
470 if (_peaks_built || pending_peak_builds.empty()) {
472 PeaksReady (); /* EMIT SIGNAL */
478 SMFSource::mark_take (string id)
486 SMFSource::move_to_trash (const string trash_dir_name)
494 /* don't move the file across filesystems, just
495 stick it in the `trash_dir_name' directory
496 on whichever filesystem it was already on.
499 newpath = Glib::path_get_dirname (_path);
500 newpath = Glib::path_get_dirname (newpath);
503 newpath += trash_dir_name;
505 newpath += Glib::path_get_basename (_path);
507 if (access (newpath.c_str(), F_OK) == 0) {
509 /* the new path already exists, try versioning */
511 char buf[PATH_MAX+1];
515 snprintf (buf, sizeof (buf), "%s.%d", newpath.c_str(), version);
518 while (access (newpath_v.c_str(), F_OK) == 0 && version < 999) {
519 snprintf (buf, sizeof (buf), "%s.%d", newpath.c_str(), ++version);
523 if (version == 999) {
524 PBD::error << string_compose (_("there are already 1000 files with names like %1; versioning discontinued"),
533 /* it doesn't exist, or we can't read it or something */
537 if (::rename (_path.c_str(), newpath.c_str()) != 0) {
538 PBD::error << string_compose (_("cannot rename audio file source from %1 to %2 (%3)"),
539 _path, newpath, strerror (errno))
544 if (::unlink (peakpath.c_str()) != 0) {
545 PBD::error << string_compose (_("cannot remove peakfile %1 for %2 (%3)"),
546 peakpath, _path, strerror (errno))
548 /* try to back out */
549 rename (newpath.c_str(), _path.c_str());
556 /* file can not be removed twice, since the operation is not idempotent */
558 _flags = Flag (_flags & ~(RemoveAtDestroy|Removable|RemovableIfEmpty));
563 // FIXME: Merge this with audiofilesource somehow (make a generic filesource?)
565 SMFSource::find (string pathstr, bool must_exist, bool& isnew)
567 string::size_type pos;
572 /* clean up PATH:CHANNEL notation so that we are looking for the correct path */
574 if ((pos = pathstr.find_last_of (':')) == string::npos) {
577 pathstr = pathstr.substr (0, pos);
580 if (pathstr[0] != '/') {
582 /* non-absolute pathname: find pathstr in search path */
589 if (_search_path.length() == 0) {
590 PBD::error << _("FileSource: search path not set") << endmsg;
594 split (_search_path, dirs, ':');
598 for (vector<string>::iterator i = dirs.begin(); i != dirs.end(); ++i) {
601 if (fullpath[fullpath.length()-1] != '/') {
606 if (access (fullpath.c_str(), R_OK) == 0) {
614 PBD::error << string_compose (_("FileSource: \"%1\" is ambigous when searching %2\n\t"), pathstr, _search_path) << endmsg;
617 } else if (cnt == 0) {
620 PBD::error << string_compose(_("Filesource: cannot find required file (%1): while searching %2"), pathstr, _search_path) << endmsg;
633 /* external files and/or very very old style sessions include full paths */
636 _name = pathstr.substr (pathstr.find_last_of ('/') + 1);
638 if (access (_path.c_str(), R_OK) != 0) {
640 /* file does not exist or we cannot read it */
643 PBD::error << string_compose(_("Filesource: cannot find required file (%1): %2"), _path, strerror (errno)) << endmsg;
647 if (errno != ENOENT) {
648 PBD::error << string_compose(_("Filesource: cannot check for existing file (%1): %2"), _path, strerror (errno)) << endmsg;
670 SMFSource::set_search_path (string p)
677 SMFSource::set_allow_remove_if_empty (bool yn)
680 _allow_remove_if_empty = yn;
685 SMFSource::set_name (string newname, bool destructive)
687 //Glib::Mutex::Lock lm (_lock); FIXME
688 string oldpath = _path;
689 string newpath = Session::change_audio_path_by_name (oldpath, _name, newname, destructive);
691 if (newpath.empty()) {
692 PBD::error << string_compose (_("programming error: %1"), "cannot generate a changed audio path") << endmsg;
696 if (rename (oldpath.c_str(), newpath.c_str()) != 0) {
697 PBD::error << string_compose (_("cannot rename audio file for %1 to %2"), _name, newpath) << endmsg;
701 _name = Glib::path_get_basename (newpath);
704 return 0;//rename_peakfile (peak_path (_path));
708 SMFSource::is_empty (string path)
717 SMFSource::write_chunk_header(char id[4], uint32_t length)
719 const uint32_t length_be = GUINT32_TO_BE(length);
721 fwrite(id, 1, 4, _fd);
722 fwrite(&length_be, 4, 1, _fd);
726 SMFSource::write_chunk(char id[4], uint32_t length, void* data)
728 write_chunk_header(id, length);
730 fwrite(data, 1, length, _fd);
733 /** Returns the size (in bytes) of the value written. */
735 SMFSource::write_var_len(uint32_t value)
739 uint32_t buffer = value & 0x7F;
741 while ( (value >>= 7) ) {
743 buffer |= ((value & 0x7F) | 0x80);
747 //printf("Writing var len byte %X\n", (unsigned char)buffer);
760 SMFSource::read_var_len() const
764 //int offset = ftell(_fd);
765 //cerr << "SMF - reading var len at " << offset << endl;
770 if ( (value = getc(_fd)) & 0x80 ) {
774 value = (value << 7) + ((c = getc(_fd)) & 0x7F);