This partially revertseced764480
. In many places Ardour uses SMF directly, without loading the MIDI model in a libardour SMFSource. In this case no information (track, channel-count) was available, aftereced764480
, and worse various members were not initialized and showed random numbers. This fixes various import options.
664 lines
14 KiB
C++
664 lines
14 KiB
C++
/*
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* Copyright (C) 2008-2015 David Robillard <d@drobilla.net>
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* Copyright (C) 2009-2018 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2009 Hans Baier <hansfbaier@googlemail.com>
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* Copyright (C) 2010-2012 Carl Hetherington <carl@carlh.net>
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* Copyright (C) 2014-2018 Robin Gareus <robin@gareus.org>
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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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#include <algorithm>
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#include <cassert>
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#include <cmath>
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#include <iostream>
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#include <stdint.h>
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#include <glib/gstdio.h>
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#include "libsmf/smf.h"
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#include "evoral/Event.h"
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#include "evoral/SMF.h"
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#include "evoral/midi_util.h"
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#ifdef COMPILER_MSVC
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extern double round(double x);
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#endif
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using namespace std;
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namespace Evoral {
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SMF::SMF()
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: _smf (0)
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, _smf_track (0)
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, _empty (true)
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, _n_note_on_events (0)
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, _has_pgm_change (false)
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, _num_channels (0)
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{};
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SMF::~SMF()
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{
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close ();
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}
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int
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SMF::smf_format () const
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{
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return _smf ? _smf->format : 0;
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}
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uint16_t
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SMF::num_tracks() const
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{
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Glib::Threads::Mutex::Lock lm (_smf_lock);
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return (uint16_t) (_smf ? _smf->number_of_tracks : 0);
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}
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uint16_t
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SMF::ppqn() const
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{
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Glib::Threads::Mutex::Lock lm (_smf_lock);
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return _smf->ppqn;
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}
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/** Seek to the specified track (1-based indexing)
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* \return 0 on success
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*/
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int
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SMF::seek_to_track(int track)
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{
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Glib::Threads::Mutex::Lock lm (_smf_lock);
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_smf_track = smf_get_track_by_number(_smf, track);
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if (_smf_track != NULL) {
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_smf_track->next_event_number = (_smf_track->number_of_events == 0) ? 0 : 1;
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return 0;
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} else {
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return -1;
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}
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}
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/** Attempt to open the SMF file just to see if it is valid.
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*
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* \return true on success
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* false on failure
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*/
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bool
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SMF::test(const std::string& path)
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{
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FILE* f = g_fopen(path.c_str(), "r");
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if (f == 0) {
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return false;
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}
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smf_t* test_smf = smf_load(f);
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fclose(f);
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if (!test_smf) {
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return false;
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}
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if (test_smf) {
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smf_delete(test_smf);
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}
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return true;
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}
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/** Attempt to open the SMF file for reading and/or writing.
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*
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* \return 0 on success
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* -1 if the file can not be opened or created
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* -2 if the file exists but specified track does not exist
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*/
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int
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SMF::open(const std::string& path, int track, bool scan)
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{
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Glib::Threads::Mutex::Lock lm (_smf_lock);
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_num_channels = 0;
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_n_note_on_events = 0;
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_has_pgm_change = false;
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_used_channels.reset ();
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assert(track >= 1);
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if (_smf) {
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smf_delete(_smf);
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}
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FILE* f = g_fopen(path.c_str(), "r");
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if (f == 0) {
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return -1;
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} else if ((_smf = smf_load(f)) == 0) {
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fclose(f);
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return -1;
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} else if ((_smf_track = smf_get_track_by_number(_smf, track)) == 0) {
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fclose(f);
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return -2;
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}
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//cerr << "Track " << track << " # events: " << _smf_track->number_of_events << endl;
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if (_smf_track->number_of_events == 0) {
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_smf_track->next_event_number = 0;
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_empty = true;
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} else {
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_smf_track->next_event_number = 1;
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_empty = false;
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}
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fclose(f);
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lm.release ();
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if (!_empty && scan) {
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/* scan the file, set meta-data w/o loading the model */
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bool type0 = _smf->format==0;
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for (int i = 1; i <= _smf->number_of_tracks; ++i) {
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/* scan file for used channels. */
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int ret;
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uint32_t delta_t = 0;
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uint32_t size = 0;
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uint8_t* buf = NULL;
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event_id_t event_id = 0;
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if (type0) {
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seek_to_start (); //type0 files have no 'track' concept, just seek_to_start
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} else {
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seek_to_track (i);
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}
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while ((ret = read_event (&delta_t, &size, &buf, &event_id)) >= 0) {
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if (ret == 0) {
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continue;
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}
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if (size == 0) {
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break;
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}
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uint8_t type = buf[0] & 0xf0;
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uint8_t chan = buf[0] & 0x0f;
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if (type >= 0x80 && type <= 0xE0) {
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_used_channels.set(chan);
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switch (type) {
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case MIDI_CMD_NOTE_ON:
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++_n_note_on_events;
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break;
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case MIDI_CMD_PGM_CHANGE:
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_has_pgm_change = true;
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break;
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default:
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break;
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}
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}
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}
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_num_channels += _used_channels.count ();
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free (buf);
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}
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}
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if (!_empty) {
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seek_to_start();
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}
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return 0;
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}
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/** Attempt to create a new SMF file for reading and/or writing.
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*
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* \return 0 on success
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* -1 if the file can not be created
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* -2 if the track can not be created
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*/
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int
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SMF::create(const std::string& path, int track, uint16_t ppqn)
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{
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Glib::Threads::Mutex::Lock lm (_smf_lock);
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assert(track >= 1);
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if (_smf) {
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smf_delete(_smf);
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}
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_smf = smf_new();
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if (_smf == NULL) {
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return -1;
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}
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if (smf_set_ppqn(_smf, ppqn) != 0) {
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return -1;
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}
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for (int i = 0; i < track; ++i) {
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_smf_track = smf_track_new();
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if (!_smf_track) {
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return -2;
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}
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smf_add_track(_smf, _smf_track);
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}
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_smf_track = smf_get_track_by_number(_smf, track);
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if (!_smf_track)
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return -2;
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_smf_track->next_event_number = 0;
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{
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/* put a stub file on disk */
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FILE* f = g_fopen (path.c_str(), "w+");
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if (f == 0) {
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return -1;
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}
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if (smf_save (_smf, f)) {
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fclose (f);
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return -1;
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}
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fclose (f);
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}
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_empty = true;
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_num_channels = 0;
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return 0;
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}
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void
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SMF::close()
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{
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Glib::Threads::Mutex::Lock lm (_smf_lock);
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if (_smf) {
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smf_delete(_smf);
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_smf = 0;
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_smf_track = 0;
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_num_channels = 0;
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}
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}
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void
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SMF::seek_to_start() const
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{
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Glib::Threads::Mutex::Lock lm (_smf_lock);
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if (_smf_track) {
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_smf_track->next_event_number = std::min(_smf_track->number_of_events, (size_t)1);
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} else {
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cerr << "WARNING: SMF seek_to_start() with no track" << endl;
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}
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}
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/** Read an event from the current position in file.
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*
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* File position MUST be at the beginning of a delta time, or this will die very messily.
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* ev.buffer must be of size ev.size, and large enough for the event. The returned event
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* will have it's time field set to it's delta time, in SMF tempo-based ticks, using the
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* rate given by ppqn() (it is the caller's responsibility to calculate a real time).
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*
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* \a buf must be a pointer to a buffer allocated with malloc, or a pointer to NULL.
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* \a size must be the capacity of \a buf. If it is not large enough, \a buf will
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* be reallocated and *size will be set to the new size of buf.
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*
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* if the event is a meta-event and is an Evoral Note ID, then \a note_id will be set
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* to the value of the NoteID; otherwise, meta-events will set \a note_id to -1.
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*
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* \return event length (including status byte) on success, 0 if event was
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* a meta event, or -1 on EOF (or end of track).
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*/
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int
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SMF::read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf, event_id_t* note_id) const
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{
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Glib::Threads::Mutex::Lock lm (_smf_lock);
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smf_event_t* event;
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assert(delta_t);
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assert(size);
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assert(buf);
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assert(note_id);
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if ((event = smf_track_get_next_event(_smf_track)) != NULL) {
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*delta_t = event->delta_time_pulses;
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if (smf_event_is_metadata(event)) {
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*note_id = -1; // "no note id in this meta-event */
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if (event->midi_buffer[1] == 0x7f) { // Sequencer-specific
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uint32_t evsize;
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uint32_t lenlen;
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if (smf_extract_vlq (&event->midi_buffer[2], event->midi_buffer_length-2, &evsize, &lenlen) == 0) {
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if (event->midi_buffer[2+lenlen] == 0x99 && // Evoral
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event->midi_buffer[3+lenlen] == 0x1) { // Evoral Note ID
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uint32_t id;
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uint32_t idlen;
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if (smf_extract_vlq (&event->midi_buffer[4+lenlen], event->midi_buffer_length-(4+lenlen), &id, &idlen) == 0) {
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*note_id = id;
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}
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}
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}
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}
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return 0; /* this is a meta-event */
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}
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uint32_t event_size = (uint32_t) event->midi_buffer_length;
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assert(event_size > 0);
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// Make sure we have enough scratch buffer
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if (*size < (unsigned)event_size) {
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*buf = (uint8_t*)realloc(*buf, event_size);
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}
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assert (*buf);
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memcpy(*buf, event->midi_buffer, size_t(event_size));
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*size = event_size;
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if (((*buf)[0] & 0xF0) == 0x90 && (*buf)[2] == 0) {
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/* normalize note on with velocity 0 to proper note off */
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(*buf)[0] = 0x80 | ((*buf)[0] & 0x0F); /* note off */
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(*buf)[2] = 0x40; /* default velocity */
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}
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if (!midi_event_is_valid(*buf, *size)) {
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cerr << "WARNING: SMF ignoring illegal MIDI event" << endl;
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*size = 0;
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return -1;
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}
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/* printf("SMF::read_event @ %u: ", *delta_t);
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for (size_t i = 0; i < *size; ++i) {
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printf("%X ", (*buf)[i]);
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} printf("\n") */
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return event_size;
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} else {
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return -1;
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}
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}
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void
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SMF::append_event_delta(uint32_t delta_t, uint32_t size, const uint8_t* buf, event_id_t note_id)
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{
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Glib::Threads::Mutex::Lock lm (_smf_lock);
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if (size == 0) {
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return;
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}
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/* printf("SMF::append_event_delta @ %u:", delta_t);
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for (size_t i = 0; i < size; ++i) {
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printf("%X ", buf[i]);
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} printf("\n"); */
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switch (buf[0]) {
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case 0xf1:
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case 0xf2:
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case 0xf3:
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case 0xf4:
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case 0xf5:
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case 0xf6:
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case 0xf8:
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case 0xf9:
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case 0xfa:
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case 0xfb:
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case 0xfc:
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case 0xfd:
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case 0xfe:
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case 0xff:
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/* System Real Time or System Common event: not valid in SMF
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*/
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return;
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}
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if (!midi_event_is_valid(buf, size)) {
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cerr << "WARNING: SMF ignoring illegal MIDI event" << endl;
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return;
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}
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smf_event_t* event;
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/* XXX july 2010: currently only store event ID's for notes, program changes and bank changes
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*/
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uint8_t const c = buf[0] & 0xf0;
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bool const store_id = (
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c == MIDI_CMD_NOTE_ON ||
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c == MIDI_CMD_NOTE_OFF ||
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c == MIDI_CMD_NOTE_PRESSURE ||
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c == MIDI_CMD_PGM_CHANGE ||
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(c == MIDI_CMD_CONTROL && (buf[1] == MIDI_CTL_MSB_BANK || buf[1] == MIDI_CTL_LSB_BANK))
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);
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if (store_id && note_id >= 0) {
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int idlen;
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int lenlen;
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uint8_t idbuf[16];
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uint8_t lenbuf[16];
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event = smf_event_new ();
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assert(event != NULL);
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/* generate VLQ representation of note ID */
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idlen = smf_format_vlq (idbuf, sizeof(idbuf), note_id);
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/* generate VLQ representation of meta event length,
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which is the idlen + 2 bytes (Evoral type ID plus Note ID type)
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*/
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lenlen = smf_format_vlq (lenbuf, sizeof(lenbuf), idlen+2);
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event->midi_buffer_length = 2 + lenlen + 2 + idlen;
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/* this should be allocated by malloc(3) because libsmf will
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call free(3) on it
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*/
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event->midi_buffer = (uint8_t*) malloc (sizeof(uint8_t) * event->midi_buffer_length);
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event->midi_buffer[0] = 0xff; // Meta-event
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event->midi_buffer[1] = 0x7f; // Sequencer-specific
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memcpy (&event->midi_buffer[2], lenbuf, lenlen);
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event->midi_buffer[2+lenlen] = 0x99; // Evoral type ID
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event->midi_buffer[3+lenlen] = 0x1; // Evoral type Note ID
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memcpy (&event->midi_buffer[4+lenlen], idbuf, idlen);
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assert(_smf_track);
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smf_track_add_event_delta_pulses(_smf_track, event, 0);
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}
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event = smf_event_new_from_pointer(buf, size);
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assert(event != NULL);
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assert(_smf_track);
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smf_track_add_event_delta_pulses(_smf_track, event, delta_t);
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_empty = false;
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}
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|
void
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SMF::begin_write()
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{
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Glib::Threads::Mutex::Lock lm (_smf_lock);
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assert(_smf_track);
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smf_track_delete(_smf_track);
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_smf_track = smf_track_new();
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assert(_smf_track);
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smf_add_track(_smf, _smf_track);
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assert(_smf->number_of_tracks == 1);
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}
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void
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SMF::end_write(string const & path)
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{
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Glib::Threads::Mutex::Lock lm (_smf_lock);
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if (!_smf) {
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return;
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}
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FILE* f = g_fopen (path.c_str(), "w+");
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if (f == 0) {
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throw FileError (path);
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}
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|
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if (smf_save(_smf, f) != 0) {
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fclose(f);
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throw FileError (path);
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}
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fclose(f);
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}
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|
|
double
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SMF::round_to_file_precision (double val) const
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|
{
|
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double div = ppqn();
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return round (val * div) / div;
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}
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|
|
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void
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SMF::track_names(vector<string>& names) const
|
|
{
|
|
if (!_smf) {
|
|
return;
|
|
}
|
|
|
|
names.clear ();
|
|
|
|
Glib::Threads::Mutex::Lock lm (_smf_lock);
|
|
|
|
for (uint16_t n = 0; n < _smf->number_of_tracks; ++n) {
|
|
smf_track_t* trk = smf_get_track_by_number (_smf, n+1);
|
|
if (!trk) {
|
|
names.push_back (string());
|
|
} else {
|
|
if (trk->name) {
|
|
names.push_back (trk->name);
|
|
} else {
|
|
char buf[32];
|
|
sprintf(buf, "t%d", n+1);
|
|
names.push_back (buf);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
SMF::instrument_names(vector<string>& names) const
|
|
{
|
|
if (!_smf) {
|
|
return;
|
|
}
|
|
|
|
names.clear ();
|
|
|
|
Glib::Threads::Mutex::Lock lm (_smf_lock);
|
|
|
|
for (uint16_t n = 0; n < _smf->number_of_tracks; ++n) {
|
|
smf_track_t* trk = smf_get_track_by_number (_smf, n+1);
|
|
if (!trk) {
|
|
names.push_back (string());
|
|
} else {
|
|
if (trk->instrument) {
|
|
names.push_back (trk->instrument);
|
|
} else {
|
|
char buf[32];
|
|
sprintf(buf, "i%d", n+1);
|
|
names.push_back (buf);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
SMF::Tempo::Tempo (smf_tempo_t* smft)
|
|
: time_pulses (smft->time_pulses)
|
|
, microseconds_per_quarter_note (smft->microseconds_per_quarter_note)
|
|
, numerator (smft->numerator)
|
|
, denominator (smft->denominator)
|
|
, clocks_per_click (smft->clocks_per_click)
|
|
, notes_per_note (smft->notes_per_note)
|
|
{
|
|
}
|
|
|
|
int
|
|
SMF::num_tempos () const
|
|
{
|
|
assert (_smf);
|
|
return smf_get_tempo_count (_smf);
|
|
}
|
|
|
|
SMF::Tempo*
|
|
SMF::nth_tempo (size_t n) const
|
|
{
|
|
assert (_smf);
|
|
|
|
smf_tempo_t* t = smf_get_tempo_by_number (_smf, n);
|
|
if (!t) {
|
|
return 0;
|
|
}
|
|
|
|
return new Tempo (t);
|
|
}
|
|
|
|
void
|
|
SMF::load_markers ()
|
|
{
|
|
if (!_smf_track) {
|
|
return;
|
|
}
|
|
|
|
Glib::Threads::Mutex::Lock lm (_smf_lock);
|
|
|
|
if (_smf_track) {
|
|
_smf_track->next_event_number = std::min(_smf_track->number_of_events, (size_t)1);
|
|
}
|
|
|
|
smf_event_t* event;
|
|
|
|
while ((event = smf_track_get_next_event(_smf_track)) != NULL) {
|
|
|
|
if (smf_event_is_metadata(event)) {
|
|
if (event->midi_buffer[1] == 0x06) {
|
|
char const * txt = smf_event_decode (event);
|
|
string marker;
|
|
if (txt != 0) {
|
|
marker = txt;
|
|
}
|
|
if (marker.find ("Marker: ") == 0) {
|
|
marker = marker.substr (8);
|
|
}
|
|
_markers.push_back (MarkerAt (marker, event->time_pulses));
|
|
}
|
|
if (event->midi_buffer[1] == 0x07) {
|
|
char const * txt = smf_event_decode (event);
|
|
string marker;
|
|
if (txt != 0) {
|
|
marker = txt;
|
|
}
|
|
if (marker.find ("Cue Point: ") == 0) {
|
|
marker = marker.substr (8);
|
|
}
|
|
_markers.push_back (MarkerAt (marker, event->time_pulses));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
} // namespace Evoral
|