#include <glibmm/miscutils.h>
+#include <evoral/SMFReader.hpp>
+
#include <ardour/smf_source.h>
#include <ardour/session.h>
#include <ardour/midi_ring_buffer.h>
-#include <ardour/midi_util.h>
#include <ardour/tempo.h>
#include <ardour/audioengine.h>
+#include <ardour/event_type_map.h>
#include "i18n.h"
SMFSource::SMFSource (Session& s, std::string path, Flag flags)
: MidiSource (s, region_name_from_path(path, false))
- , _channel(0)
+ , SMF ()
, _flags (Flag(flags | Writable)) // FIXME: this needs to be writable for now
, _allow_remove_if_empty(true)
- , _timeline_position (0)
- , _fd (0)
- , _last_ev_time(0)
- , _track_size(4) // 4 bytes for the ever-present EOT event
- , _header_size(22)
{
/* constructor used for new internal-to-session files. file cannot exist */
throw failed_constructor ();
}
- if (open()) {
+ if (open(path)) {
throw failed_constructor ();
}
-
+
assert(_name.find("/") == string::npos);
}
SMFSource::SMFSource (Session& s, const XMLNode& node)
: MidiSource (s, node)
- , _channel(0)
, _flags (Flag (Writable|CanRename))
, _allow_remove_if_empty(true)
- , _timeline_position (0)
- , _fd (0)
- , _last_ev_time(0)
- , _track_size(4) // 4 bytes for the ever-present EOT event
- , _header_size(22)
{
/* constructor used for existing internal-to-session files. file must exist */
throw failed_constructor ();
}
- if (open()) {
+ if (open(_path)) {
throw failed_constructor ();
}
SMFSource::removable () const
{
return (_flags & Removable) && ((_flags & RemoveAtDestroy) ||
- ((_flags & RemovableIfEmpty) && is_empty (_path)));
+ ((_flags & RemovableIfEmpty) && is_empty()));
}
int
return 0;
}
-int
-SMFSource::open()
-{
- //cerr << "Opening SMF file " << path() << " writeable: " << writable() << endl;
-
- assert(writable()); // FIXME;
-
- _fd = fopen(path().c_str(), "r+");
-
- // File already exists
- if (_fd) {
- fseek(_fd, _header_size - 4, 0);
- uint32_t track_size_be = 0;
- fread(&track_size_be, 4, 1, _fd);
- _track_size = GUINT32_FROM_BE(track_size_be);
- //cerr << "SMF - read track size " << _track_size << endl;
-
- // We're making a new file
- } else {
- _fd = fopen(path().c_str(), "w+");
- _track_size = 0;
-
- // write a tentative header just to pad things out so writing happens in the right spot
- flush_header();
- // FIXME: write the footer here too so it's a valid SMF (screw up writing ATM though)
- }
-
- return (_fd == 0) ? -1 : 0;
-}
-
-int
-SMFSource::update_header (nframes_t when, struct tm&, time_t)
-{
- _timeline_position = when;
- return flush_header();
-}
-
-int
-SMFSource::flush_header ()
-{
- // FIXME: write timeline position somehow?
-
- //cerr << "SMF Flushing header\n";
-
- assert(_fd);
-
- const uint16_t type = GUINT16_TO_BE(0); // SMF Type 0 (single track)
- const uint16_t ntracks = GUINT16_TO_BE(1); // Number of tracks (always 1 for Type 0)
- const uint16_t division = GUINT16_TO_BE(_ppqn); // Pulses per beat
-
- char data[6];
- memcpy(data, &type, 2);
- memcpy(data+2, &ntracks, 2);
- memcpy(data+4, &division, 2);
-
- _fd = freopen(path().c_str(), "r+", _fd);
- assert(_fd);
- fseek(_fd, 0, 0);
- write_chunk("MThd", 6, data);
- //if (_track_size > 0) {
- write_chunk_header("MTrk", _track_size);
- //}
-
- fflush(_fd);
-
- return 0;
-}
-
-int
-SMFSource::flush_footer()
-{
- //cerr << "SMF - Writing EOT\n";
-
- fseek(_fd, 0, SEEK_END);
- write_var_len(1); // whatever...
- char eot[4] = { 0xFF, 0x2F, 0x00 }; // end-of-track meta-event
- fwrite(eot, 1, 4, _fd);
- fflush(_fd);
- return 0;
-}
-
-/** Returns the offset of the first event in the file with a time past @a start,
- * relative to the start of the source.
- *
- * Returns -1 if not found.
- */
-/*
-long
-SMFSource::find_first_event_after(nframes_t start)
-{
- // FIXME: obviously this is slooow
-
- fseek(_fd, _header_size, 0);
-
- while ( ! feof(_fd) ) {
- const uint32_t delta_time = read_var_len();
-
- if (delta_time > start)
- return delta_time;
- }
-
- return -1;
-}
-*/
-
-/** Read an event from the current position in file.
- *
- * File position MUST be at the beginning of a delta time, or this will die very messily.
- * ev.buffer must be of size ev.size, and large enough for the event. The returned event
- * will have it's time field set to it's delta time, in SMF tempo-based ticks, using the
- * rate given by ppqn() (it is the caller's responsibility to calculate a real time).
- *
- * Returns event length (including status byte) on success, 0 if event was
- * skipped (eg a meta event), or -1 on EOF (or end of track).
- */
-int
-SMFSource::read_event(jack_midi_event_t& ev) const
-{
- // - 4 is for the EOT event, which we don't actually want to read
- //if (feof(_fd) || ftell(_fd) >= _header_size + _track_size - 4) {
- if (feof(_fd)) {
- return -1;
- }
-
- uint32_t delta_time = read_var_len();
- assert(!feof(_fd));
- int status = fgetc(_fd);
- assert(status != EOF); // FIXME die gracefully
- if (status == 0xFF) {
- assert(!feof(_fd));
- int type = fgetc(_fd);
- if ((unsigned char)type == 0x2F) {
- //cerr << "SMF - hit EOT" << endl;
- return -1; // we hit the logical EOF anyway...
- } else {
- ev.size = 0;
- ev.time = delta_time; // this is needed regardless
- return 0;
- }
- }
-
- ev.time = delta_time;
- ev.size = midi_event_size((unsigned char)status) + 1;
-
- if (ev.buffer == NULL)
- ev.buffer = (Byte*)malloc(sizeof(Byte) * ev.size);
-
- ev.buffer[0] = (unsigned char)status;
- fread(ev.buffer+1, 1, ev.size - 1, _fd);
-
- /*printf("SMF - read event, delta = %u, size = %zu, data = ",
- delta_time, ev.size);
- for (size_t i=0; i < ev.size; ++i) {
- printf("%X ", ev.buffer[i]);
- }
- printf("\n");*/
-
- return ev.size;
-}
-
/** All stamps in audio frames */
nframes_t
-SMFSource::read_unlocked (MidiRingBuffer& dst, nframes_t start, nframes_t cnt, nframes_t stamp_offset) const
+SMFSource::read_unlocked (MidiRingBuffer& dst, nframes_t start, nframes_t cnt, nframes_t stamp_offset, nframes_t negative_stamp_offset) const
{
- //cerr << "SMF - read " << start << ", count=" << cnt << ", offset=" << stamp_offset << endl;
+ //cerr << "SMF read_unlocked " << name() << " read " << start << ", count=" << cnt << ", offset=" << stamp_offset << endl;
// 64 bits ought to be enough for anybody
uint64_t time = 0; // in SMF ticks, 1 tick per _ppqn
_read_data_count = 0;
- // FIXME: ugh
- unsigned char ev_buf[MidiBuffer::max_event_size()];
- jack_midi_event_t ev; // time in SMF ticks
- ev.time = 0;
- ev.size = MidiBuffer::max_event_size();
- ev.buffer = ev_buf;
+ // Output parameters for read_event (which will allocate scratch in buffer as needed)
+ uint32_t ev_delta_t = 0;
+ uint32_t ev_type = 0;
+ uint32_t ev_size = 0;
+ uint8_t* ev_buffer = 0;
- // FIXME: don't seek to start every read
- fseek(_fd, _header_size, 0);
+ size_t scratch_size = 0; // keep track of scratch to minimize reallocs
+
+ // FIXME: don't seek to start and search every read (brutal!)
+ SMF::seek_to_start();
// FIXME: assumes tempo never changes after start
const double frames_per_beat = _session.tempo_map().tempo_at(_timeline_position).frames_per_beat(
- _session.engine().frame_rate());
+ _session.engine().frame_rate(),
+ _session.tempo_map().meter_at(_timeline_position));
- uint64_t start_ticks = (uint64_t)((start / frames_per_beat) * _ppqn);
+ const uint64_t start_ticks = (uint64_t)((start / frames_per_beat) * ppqn());
- while (!feof(_fd)) {
- int ret = read_event(ev);
+ while (!SMF::eof()) {
+ int ret = read_event(&ev_delta_t, &ev_size, &ev_buffer);
if (ret == -1) { // EOF
//cerr << "SMF - EOF\n";
break;
}
+
+ ev_type = EventTypeMap::instance().midi_event_type(ev_buffer[0]);
+
+ time += ev_delta_t; // accumulate delta time
- if (ret == 0) { // meta-event (skipped)
+ if (ret == 0) { // meta-event (skipped, just accumulate time)
//cerr << "SMF - META\n";
- time += ev.time; // just accumulate delta time and ignore event
continue;
}
- time += ev.time; // accumulate delta time
- ev.time = time; // set ev.time to actual time (relative to source start)
+ if (time >= start_ticks) {
+ const nframes_t ev_frame_time = (nframes_t)(
+ ((time / (double)ppqn()) * frames_per_beat)) + stamp_offset;
- if (ev.time >= start_ticks) {
- if (ev.time < start_ticks + (cnt / frames_per_beat)) {
+ if (ev_frame_time <= start + cnt)
+ dst.write(ev_frame_time - negative_stamp_offset, ev_type, ev_size, ev_buffer);
+ else
break;
- } else {
- ev.time = (nframes_t)(((ev.time / (double)_ppqn) * frames_per_beat)) + stamp_offset;
- // write event time in absolute frames
- dst.write(ev.time, ev.size, ev.buffer);
- }
}
- _read_data_count += ev.size;
+ _read_data_count += ev_size;
+
+ if (ev_size > scratch_size)
+ scratch_size = ev_size;
+ else
+ ev_size = scratch_size; // minimize realloc in read_event
}
return cnt;
SMFSource::write_unlocked (MidiRingBuffer& src, nframes_t cnt)
{
_write_data_count = 0;
+
+ Evoral::EventTime time;
+ Evoral::EventType type;
+ uint32_t size;
- boost::shared_ptr<MidiBuffer> buf_ptr(new MidiBuffer(1024)); // FIXME: size?
- MidiBuffer& buf = *buf_ptr.get();
- src.read(buf, /*_length*/0, _length + cnt); // FIXME?
+ size_t buf_capacity = 4;
+ uint8_t* buf = (uint8_t*)malloc(buf_capacity);
+
+ if (_model && ! _model->writing())
+ _model->start_write();
- fseek(_fd, 0, SEEK_END);
+ Evoral::MIDIEvent ev(0, 0.0, 4, NULL, true);
- // FIXME: assumes tempo never changes after start
- const double frames_per_beat = _session.tempo_map().tempo_at(_timeline_position).frames_per_beat(
- _session.engine().frame_rate());
-
- for (size_t i=0; i < buf.size(); ++i) {
- MidiEvent& ev = buf[i];
- assert(ev.time >= _timeline_position);
- ev.time -= _timeline_position;
- assert(ev.time >= _last_ev_time);
- const uint32_t delta_time = (uint32_t)((ev.time - _last_ev_time) / frames_per_beat * _ppqn);
-
- /*printf("SMF - writing event, delta = %u, size = %zu, data = ",
- delta_time, ev.size);
- for (size_t i=0; i < ev.size; ++i) {
- printf("%X ", ev.buffer[i]);
+ while (true) {
+ bool ret = src.peek_time(&time);
+ if (!ret || time - _timeline_position > _length + cnt)
+ break;
+
+ ret = src.read_prefix(&time, &type, &size);
+ if (!ret)
+ break;
+
+ if (size > buf_capacity) {
+ buf_capacity = size;
+ buf = (uint8_t*)realloc(buf, size);
}
- printf("\n");
- */
- size_t stamp_size = write_var_len(delta_time);
- fwrite(ev.buffer, 1, ev.size, _fd);
- _track_size += stamp_size + ev.size;
- _write_data_count += ev.size;
+ ret = src.read_contents(size, buf);
+ if (!ret) {
+ cerr << "ERROR: Read time/size but not buffer, corrupt MIDI ring buffer" << endl;
+ break;
+ }
+
+ assert(time >= _timeline_position);
+ time -= _timeline_position;
- _last_ev_time = ev.time;
+ ev.set(buf, size, time);
+ ev.set_event_type(EventTypeMap::instance().midi_event_type(ev.buffer()[0]));
+ if (! (ev.is_channel_event() || ev.is_smf_meta_event() || ev.is_sysex()) ) {
+ //cerr << "SMFSource: WARNING: caller tried to write non SMF-Event of type " << std::hex << int(ev.buffer()[0]) << endl;
+ continue;
+ }
+
+ append_event_unlocked(Frames, ev);
+
+ if (_model) {
+ _model->append(ev);
+ }
}
- fflush(_fd);
+ SMF::flush();
+ free(buf);
const nframes_t oldlen = _length;
update_length(oldlen, cnt);
- _model->append(buf);
-
- ViewDataRangeReady (buf_ptr, oldlen, cnt); /* EMIT SIGNAL */
+ ViewDataRangeReady (_timeline_position + oldlen, cnt); /* EMIT SIGNAL */
return cnt;
}
+
+
+void
+SMFSource::append_event_unlocked(EventTimeUnit unit, const Evoral::Event& ev)
+{
+ if (ev.size() == 0)
+ return;
+
+ /*printf("SMFSource: %s - append_event_unlocked chan = %u, time = %lf, size = %u, data = ",
+ name().c_str(), (unsigned)ev.channel(), ev.time(), ev.size());
+ for (size_t i=0; i < ev.size(); ++i) {
+ printf("%X ", ev.buffer()[i]);
+ }
+ printf("\n");*/
+
+ assert(ev.time() >= 0);
+
+ if (ev.time() < last_event_time()) {
+ cerr << "SMFSource: Warning: Skipping event with ev.time() < last.time()" << endl;
+ return;
+ }
+
+ uint32_t delta_time = 0;
+
+ if (unit == Frames) {
+ // FIXME: assumes tempo never changes after start
+ const double frames_per_beat = _session.tempo_map().tempo_at(_timeline_position).frames_per_beat(
+ _session.engine().frame_rate(),
+ _session.tempo_map().meter_at(_timeline_position));
+
+ delta_time = (uint32_t)((ev.time() - last_event_time()) / frames_per_beat * ppqn());
+ } else {
+ assert(unit == Beats);
+ delta_time = (uint32_t)((ev.time() - last_event_time()) * ppqn());
+ }
+
+ SMF::append_event_unlocked(delta_time, ev);
+
+ _write_data_count += ev.size();
+}
+
XMLNode&
SMFSource::get_state ()
_flags = Flag (_flags | RemoveAtDestroy);
}
+void
+SMFSource::mark_streaming_midi_write_started (NoteMode mode, nframes_t start_frame)
+{
+ MidiSource::mark_streaming_midi_write_started (mode, start_frame);
+ SMF::begin_write (start_frame);
+}
+
void
SMFSource::mark_streaming_write_completed ()
{
+ MidiSource::mark_streaming_write_completed();
+
if (!writable()) {
return;
}
- flush_footer();
-
-#if 0
- Glib::Mutex::Lock lm (_lock);
-
-
- next_peak_clear_should_notify = true;
-
- if (_peaks_built || pending_peak_builds.empty()) {
- _peaks_built = true;
- PeaksReady (); /* EMIT SIGNAL */
- }
-#endif
+ _model->set_edited(false);
+ SMF::end_write ();
}
void
return 0;
}
+bool
+SMFSource::safe_file_extension(const Glib::ustring& file)
+{
+ return (file.rfind(".mid") != Glib::ustring::npos);
+}
+
// FIXME: Merge this with audiofilesource somehow (make a generic filesource?)
bool
SMFSource::find (string pathstr, bool must_exist, bool& isnew)
return 0;//rename_peakfile (peak_path (_path));
}
-bool
-SMFSource::is_empty (string path)
-{
- /* XXX fix me */
-
- return false;
-}
-
-
void
-SMFSource::write_chunk_header(char id[4], uint32_t length)
-{
- const uint32_t length_be = GUINT32_TO_BE(length);
-
- fwrite(id, 1, 4, _fd);
- fwrite(&length_be, 4, 1, _fd);
-}
-
-void
-SMFSource::write_chunk(char id[4], uint32_t length, void* data)
-{
- write_chunk_header(id, length);
-
- fwrite(data, 1, length, _fd);
-}
-
-/** Returns the size (in bytes) of the value written. */
-size_t
-SMFSource::write_var_len(uint32_t value)
-{
- size_t ret = 0;
-
- uint32_t buffer = value & 0x7F;
-
- while ( (value >>= 7) ) {
- buffer <<= 8;
- buffer |= ((value & 0x7F) | 0x80);
- }
-
- while (true) {
- //printf("Writing var len byte %X\n", (unsigned char)buffer);
- ++ret;
- fputc(buffer, _fd);
- if (buffer & 0x80)
- buffer >>= 8;
- else
- break;
- }
-
- return ret;
-}
-
-uint32_t
-SMFSource::read_var_len() const
+SMFSource::load_model(bool lock, bool force_reload)
{
- assert(!feof(_fd));
-
- //int offset = ftell(_fd);
- //cerr << "SMF - reading var len at " << offset << endl;
-
- uint32_t value;
- unsigned char c;
-
- if ( (value = getc(_fd)) & 0x80 ) {
- value &= 0x7F;
- do {
- assert(!feof(_fd));
- value = (value << 7) + ((c = getc(_fd)) & 0x7F);
- } while (c & 0x80);
+ if (_writing) {
+ return;
}
+
- return value;
-}
-
-void
-SMFSource::load_model(bool lock, bool force_reload)
-{
- if (lock)
+ if (lock) {
Glib::Mutex::Lock lm (_lock);
+ }
- if (_model && _model_loaded && ! force_reload) {
- assert(_model);
+ if (_model && !force_reload && !_model->empty()) {
return;
}
- if (! _model)
- _model = new MidiModel(_session);
+ if (! _model) {
+ _model = boost::shared_ptr<MidiModel>(new MidiModel(this));
+ cerr << _name << " loaded new model " << _model.get() << endl;
+ } else {
+ cerr << _name << " reloading model " << _model.get()
+ << " (" << _model->n_notes() << " notes)" <<endl;
+ _model->clear();
+ }
_model->start_write();
-
- fseek(_fd, _header_size, 0);
+ SMF::seek_to_start();
uint64_t time = 0; /* in SMF ticks */
- jack_midi_event_t ev;
- ev.time = 0;
- ev.size = 0;
- ev.buffer = NULL;
+ Evoral::Event ev;
+
+ size_t scratch_size = 0; // keep track of scratch and minimize reallocs
// FIXME: assumes tempo never changes after start
const double frames_per_beat = _session.tempo_map().tempo_at(_timeline_position).frames_per_beat(
- _session.engine().frame_rate());
+ _session.engine().frame_rate(),
+ _session.tempo_map().meter_at(_timeline_position));
+ uint32_t delta_t = 0;
+ uint32_t size = 0;
+ uint8_t* buf = NULL;
int ret;
- while ((ret = read_event(ev)) >= 0) {
- time += ev.time;
+ while ((ret = read_event(&delta_t, &size, &buf)) >= 0) {
+
+ ev.set(buf, size, 0.0);
+ time += delta_t;
- const double ev_time = (double)(time * frames_per_beat / (double)_ppqn); // in frames
-
if (ret > 0) { // didn't skip (meta) event
- //cerr << "ADDING EVENT TO MODEL: " << ev.time << endl;
- _model->append(ev_time, ev.size, ev.buffer);
+ // make ev.time absolute time in frames
+ ev.time() = time * frames_per_beat / (Evoral::EventTime)ppqn();
+ ev.set_event_type(EventTypeMap::instance().midi_event_type(buf[0]));
+ _model->append(ev);
+ }
+
+ if (ev.size() > scratch_size) {
+ scratch_size = ev.size();
+ } else {
+ ev.size() = scratch_size;
}
}
+
+ // set interpolation style to defaults, can be changed by the GUI later
+ Evoral::ControlSet::Controls controls = _model->controls();
+ for (Evoral::ControlSet::Controls::iterator c = controls.begin(); c != controls.end(); ++c) {
+ (*c).second->list()->set_interpolation(
+ EventTypeMap::instance().interpolation_of((*c).first));
+ }
- _model->end_write(false); /* FIXME: delete stuck notes iff percussion? */
+ _model->end_write(false);
+ _model->set_edited(false);
- _model_loaded = true;
+ free(buf);
}
void
SMFSource::destroy_model()
{
- delete _model;
- _model = NULL;
+ //cerr << _name << " destroying model " << _model.get() << endl;
+ _model.reset();
+}
+
+void
+SMFSource::flush_midi()
+{
+ SMF::end_write();
}
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