git-svn-id: svn://localhost/ardour2/branches/3.0@6213 d708f5d6-7413-0410-9779-e7cbd77b26cf
482 lines
12 KiB
C++
482 lines
12 KiB
C++
/*
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Copyright (C) 2006 Paul Davis
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Written by Dave Robillard, 2006
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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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#include <vector>
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <errno.h>
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#include "pbd/mountpoint.h"
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#include "pbd/pathscanner.h"
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#include "pbd/stl_delete.h"
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#include "pbd/strsplit.h"
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#include <glibmm/miscutils.h>
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#include "evoral/SMFReader.hpp"
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#include "evoral/Control.hpp"
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#include "ardour/audioengine.h"
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#include "ardour/event_type_map.h"
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#include "ardour/midi_model.h"
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#include "ardour/midi_ring_buffer.h"
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#include "ardour/midi_state_tracker.h"
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#include "ardour/session.h"
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#include "ardour/smf_source.h"
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#include "i18n.h"
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using namespace ARDOUR;
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using namespace Glib;
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/** Constructor used for new internal-to-session files. File cannot exist. */
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SMFSource::SMFSource (Session& s, const ustring& path, Source::Flag flags)
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: Source(s, DataType::MIDI, path, flags)
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, MidiSource(s, path)
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, FileSource(s, DataType::MIDI, path, flags)
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, Evoral::SMF()
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, _last_ev_time_beats(0.0)
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, _last_ev_time_frames(0)
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, _smf_last_read_end (0)
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{
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if (init(_path, false)) {
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throw failed_constructor ();
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}
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if (create(path)) {
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throw failed_constructor ();
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}
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load_model(true, true); // FIXME
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}
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/** Constructor used for existing internal-to-session files. */
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SMFSource::SMFSource (Session& s, const XMLNode& node, bool must_exist)
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: Source(s, node)
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, MidiSource(s, node)
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, FileSource(s, node, must_exist)
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, _last_ev_time_beats(0.0)
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, _last_ev_time_frames(0)
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, _smf_last_read_end (0)
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{
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if (set_state(node, Stateful::loading_state_version)) {
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throw failed_constructor ();
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}
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if (init(_path, true)) {
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throw failed_constructor ();
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}
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if (open(_path)) {
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throw failed_constructor ();
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}
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load_model(true, true); // FIXME
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}
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SMFSource::~SMFSource ()
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{
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if (removable()) {
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unlink (_path.c_str());
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}
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}
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/** All stamps in audio frames */
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nframes_t
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SMFSource::read_unlocked (Evoral::EventSink<nframes_t>& destination, sframes_t source_start,
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sframes_t start, nframes_t duration,
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sframes_t stamp_offset, sframes_t negative_stamp_offset,
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MidiStateTracker* tracker) const
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{
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int ret = 0;
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uint64_t time = 0; // in SMF ticks, 1 tick per _ppqn
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_read_data_count = 0;
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// Output parameters for read_event (which will allocate scratch in buffer as needed)
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uint32_t ev_delta_t = 0;
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uint32_t ev_type = 0;
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uint32_t ev_size = 0;
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uint8_t* ev_buffer = 0;
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size_t scratch_size = 0; // keep track of scratch to minimize reallocs
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BeatsFramesConverter converter(_session.tempo_map(), source_start);
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const uint64_t start_ticks = (uint64_t)(converter.from(start) * ppqn());
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if (_smf_last_read_end == 0 || start != _smf_last_read_end) {
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//cerr << "SMFSource::read_unlocked seeking to " << start << endl;
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Evoral::SMF::seek_to_start();
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while (time < start_ticks) {
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ret = read_event(&ev_delta_t, &ev_size, &ev_buffer);
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if (ret == -1) { // EOF
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_smf_last_read_end = start + duration;
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return duration;
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}
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time += ev_delta_t; // accumulate delta time
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}
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}
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_smf_last_read_end = start + duration;
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while (true) {
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ret = read_event(&ev_delta_t, &ev_size, &ev_buffer);
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if (ret == -1) { // EOF
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break;
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}
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time += ev_delta_t; // accumulate delta time
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if (ret == 0) { // meta-event (skipped, just accumulate time)
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continue;
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}
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ev_type = EventTypeMap::instance().midi_event_type(ev_buffer[0]);
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#if 0
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cerr << "+++ SMF source read "
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<< " delta = " << ev_delta_t
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<< " time = " << time
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<< " buf[0] " << hex << (int) ev_buffer[0] << dec
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<< " type = " << ev_type;
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#endif
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assert(time >= start_ticks);
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const sframes_t ev_frame_time = converter.to(time / (double)ppqn()) + stamp_offset;
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#if 0
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cerr << " frames = " << ev_frame_time
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<< " w/offset = " << ev_frame_time - negative_stamp_offset
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<< endl;
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#endif
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if (ev_frame_time < start + duration) {
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destination.write(ev_frame_time - negative_stamp_offset, ev_type, ev_size, ev_buffer);
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if (tracker) {
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if (ev_buffer[0] & MIDI_CMD_NOTE_ON) {
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tracker->add (ev_buffer[1], ev_buffer[0] & 0xf);
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} else if (ev_buffer[0] & MIDI_CMD_NOTE_OFF) {
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tracker->remove (ev_buffer[1], ev_buffer[0] & 0xf);
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}
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}
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} else {
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break;
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}
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_read_data_count += ev_size;
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if (ev_size > scratch_size) {
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scratch_size = ev_size;
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}
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ev_size = scratch_size; // ensure read_event only allocates if necessary
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}
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return duration;
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}
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/** All stamps in audio frames */
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nframes_t
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SMFSource::write_unlocked (MidiRingBuffer<nframes_t>& source, sframes_t position, nframes_t duration)
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{
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_write_data_count = 0;
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nframes_t time;
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Evoral::EventType type;
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uint32_t size;
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size_t buf_capacity = 4;
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uint8_t* buf = (uint8_t*)malloc(buf_capacity);
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if (_model && ! _model->writing()) {
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_model->start_write();
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}
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Evoral::MIDIEvent<nframes_t> ev;
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while (true) {
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bool ret = source.peek_time(&time);
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if (!ret || time > _last_write_end + duration) {
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break;
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}
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ret = source.read_prefix(&time, &type, &size);
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if (!ret) {
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cerr << "ERROR: Unable to read event prefix, corrupt MIDI ring buffer" << endl;
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break;
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}
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if (size > buf_capacity) {
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buf_capacity = size;
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buf = (uint8_t*)realloc(buf, size);
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}
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ret = source.read_contents(size, buf);
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if (!ret) {
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cerr << "ERROR: Read time/size but not buffer, corrupt MIDI ring buffer" << endl;
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break;
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}
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assert(time >= position);
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time -= position;
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ev.set(buf, size, time);
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ev.set_event_type(EventTypeMap::instance().midi_event_type(ev.buffer()[0]));
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if (!(ev.is_channel_event() || ev.is_smf_meta_event() || ev.is_sysex())) {
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/*cerr << "SMFSource: WARNING: caller tried to write non SMF-Event of type "
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<< std::hex << int(ev.buffer()[0]) << endl;*/
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continue;
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}
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append_event_unlocked_frames(ev, position);
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}
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if (_model) {
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set_default_controls_interpolation();
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}
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Evoral::SMF::flush();
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free(buf);
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ViewDataRangeReady(position + _last_write_end, duration); /* EMIT SIGNAL */
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return duration;
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}
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/** Append an event with a timestamp in beats (double) */
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void
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SMFSource::append_event_unlocked_beats (const Evoral::Event<double>& ev)
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{
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assert(_writing);
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if (ev.size() == 0) {
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return;
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}
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/*printf("SMFSource: %s - append_event_unlocked_beats time = %lf, size = %u, data = ",
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name().c_str(), ev.time(), ev.size());
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for (size_t i = 0; i < ev.size(); ++i) printf("%X ", ev.buffer()[i]); printf("\n");*/
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assert(ev.time() >= 0);
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if (ev.time() < _last_ev_time_beats) {
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cerr << "SMFSource: Warning: Skipping event with non-monotonic time" << endl;
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return;
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}
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_length_beats = max(_length_beats, ev.time());
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const double delta_time_beats = ev.time() - _last_ev_time_beats;
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const uint32_t delta_time_ticks = (uint32_t)lrint(delta_time_beats * (double)ppqn());
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Evoral::SMF::append_event_delta(delta_time_ticks, ev.size(), ev.buffer());
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_last_ev_time_beats = ev.time();
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_write_data_count += ev.size();
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if (_model) {
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_model->append(ev);
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}
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}
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/** Append an event with a timestamp in frames (nframes_t) */
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void
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SMFSource::append_event_unlocked_frames (const Evoral::Event<nframes_t>& ev, sframes_t position)
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{
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assert(_writing);
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if (ev.size() == 0) {
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return;
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}
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/*printf("SMFSource: %s - append_event_unlocked_frames time = %u, size = %u, data = ",
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name().c_str(), ev.time(), ev.size());
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for (size_t i=0; i < ev.size(); ++i) printf("%X ", ev.buffer()[i]); printf("\n");*/
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if (ev.time() < _last_ev_time_frames) {
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cerr << "SMFSource: Warning: Skipping event with non-monotonic time" << endl;
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return;
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}
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BeatsFramesConverter converter(_session.tempo_map(), position);
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_length_beats = max(_length_beats, converter.from(ev.time()));
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const sframes_t delta_time_frames = ev.time() - _last_ev_time_frames;
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const double delta_time_beats = converter.from(delta_time_frames);
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const uint32_t delta_time_ticks = (uint32_t)(lrint(delta_time_beats * (double)ppqn()));
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Evoral::SMF::append_event_delta(delta_time_ticks, ev.size(), ev.buffer());
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_last_ev_time_frames = ev.time();
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_write_data_count += ev.size();
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if (_model) {
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const double ev_time_beats = converter.from(ev.time());
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const Evoral::Event<double> beat_ev(
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ev.event_type(), ev_time_beats, ev.size(), (uint8_t*)ev.buffer());
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_model->append(beat_ev);
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}
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}
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XMLNode&
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SMFSource::get_state ()
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{
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return MidiSource::get_state();
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}
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int
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SMFSource::set_state (const XMLNode& node, int version)
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{
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if (Source::set_state (node, version)) {
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return -1;
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}
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if (MidiSource::set_state (node, version)) {
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return -1;
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}
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if (FileSource::set_state (node, version)) {
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return -1;
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}
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return 0;
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}
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void
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SMFSource::mark_streaming_midi_write_started (NoteMode mode, sframes_t start_frame)
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{
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Glib::Mutex::Lock lm (_lock);
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MidiSource::mark_streaming_midi_write_started (mode, start_frame);
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Evoral::SMF::begin_write ();
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_last_ev_time_beats = 0.0;
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_last_ev_time_frames = 0;
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}
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void
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SMFSource::mark_streaming_write_completed ()
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{
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Glib::Mutex::Lock lm (_lock);
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MidiSource::mark_streaming_write_completed();
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if (!writable()) {
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return;
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}
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_model->set_edited(false);
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Evoral::SMF::end_write ();
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}
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bool
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SMFSource::safe_midi_file_extension (const Glib::ustring& file)
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{
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return (file.rfind(".mid") != Glib::ustring::npos);
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}
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void
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SMFSource::load_model (bool lock, bool force_reload)
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{
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if (_writing) {
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return;
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}
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boost::shared_ptr<Glib::Mutex::Lock> lm;
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if (lock)
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lm = boost::shared_ptr<Glib::Mutex::Lock>(new Glib::Mutex::Lock(_lock));
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if (_model && !force_reload) {
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return;
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}
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if (! _model) {
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_model = boost::shared_ptr<MidiModel>(new MidiModel(this));
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//cerr << _name << " loaded new model " << _model.get() << endl;
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} else {
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/*cerr << _name << " reloading model " << _model.get()
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<< " (" << _model->n_notes() << " notes)" << endl;*/
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_model->clear();
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}
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_model->start_write();
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Evoral::SMF::seek_to_start();
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uint64_t time = 0; /* in SMF ticks */
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Evoral::Event<double> ev;
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size_t scratch_size = 0; // keep track of scratch and minimize reallocs
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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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int ret;
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while ((ret = read_event(&delta_t, &size, &buf)) >= 0) {
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time += delta_t;
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ev.set(buf, size, time / (double)ppqn());
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if (ret > 0) { // didn't skip (meta) event
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ev.set_event_type(EventTypeMap::instance().midi_event_type(buf[0]));
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_model->append(ev);
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}
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if (ev.size() > scratch_size) {
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scratch_size = ev.size();
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}
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ev.size() = scratch_size; // ensure read_event only allocates if necessary
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_length_beats = max(_length_beats, ev.time());
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}
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set_default_controls_interpolation();
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_model->end_write(false);
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_model->set_edited(false);
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_model_iter = _model->begin();
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free(buf);
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}
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void
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SMFSource::set_default_controls_interpolation ()
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{
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// set interpolation style to defaults, can be changed by the GUI later
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Evoral::ControlSet::Controls controls = _model->controls();
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for (Evoral::ControlSet::Controls::iterator c = controls.begin(); c != controls.end(); ++c) {
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(*c).second->list()->set_interpolation(
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EventTypeMap::instance().interpolation_of((*c).first));
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}
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}
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void
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SMFSource::destroy_model ()
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{
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//cerr << _name << " destroying model " << _model.get() << endl;
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_model.reset();
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}
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void
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SMFSource::flush_midi ()
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{
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Evoral::SMF::end_write();
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}
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