, _channel(0)
, _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
if (open()) {
throw failed_constructor ();
}
+
+ //cerr << "SMF Source path: " << path << endl;
assert(_name.find("/") == string::npos);
}
, _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
throw failed_constructor ();
}
+ //cerr << "SMF Source name: " << _name << endl;
+
assert(_name.find("/") == string::npos);
}
SMFSource::removable () const
{
return (_flags & Removable) && ((_flags & RemoveAtDestroy) ||
- ((_flags & RemovableIfEmpty) && is_empty (_path)));
+ ((_flags & RemovableIfEmpty) && is_empty()));
}
int
int
SMFSource::open()
{
- cerr << "Opening SMF file " << path() << " writeable: " << writable() << endl;
+ //cerr << "Opening SMF file " << path() << " writeable: " << writable() << endl;
assert(writable()); // FIXME;
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;
+ //cerr << "SMF - read track size " << _track_size << endl;
// We're making a new file
} else {
_fd = fopen(path().c_str(), "w+");
- _track_size = 0;
+ _track_size = 4;
- // write a tentative header just to pad things out so writing happens in the right spot
+ // 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)
+ write_footer();
+ seek_to_end();
}
return (_fd == 0) ? -1 : 0;
}
-int
-SMFSource::update_header (nframes_t when, struct tm&, time_t)
+void
+SMFSource::seek_to_end()
{
- _timeline_position = when;
- return flush_header();
+ fseek(_fd, -4, SEEK_END);
}
int
{
// FIXME: write timeline position somehow?
- cerr << "SMF Flushing header\n";
+ //cerr << "SMF Flushing header\n";
assert(_fd);
int
SMFSource::flush_footer()
{
- cerr << "SMF - Writing EOT\n";
+ seek_to_end();
+ write_footer();
+ seek_to_end();
- 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;
}
+void
+SMFSource::write_footer()
+{
+ //cerr << "SMF " << name() << " writing EOT at byte " << ftell(_fd) << endl;
+
+ write_var_len(0);
+ char eot[3] = { 0xFF, 0x2F, 0x00 }; // end-of-track meta-event
+ fwrite(eot, 1, 3, _fd);
+ fflush(_fd);
+}
+
/** Returns the offset of the first event in the file with a time past @a start,
* relative to the start of the source.
*
* 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).
*
+ * \a size should be the capacity of \a buf. If it is not large enough, \a buf will
+ * be freed and a new buffer allocated in its place, the size of which will be placed
+ * in size.
+ *
* 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(MidiEvent& ev) const
+SMFSource::read_event(uint32_t* delta_t, uint32_t* size, Byte** buf) 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(delta_t);
+ assert(size);
+ assert(buf);
+
+ *delta_t = read_var_len();
assert(!feof(_fd));
- int status = fgetc(_fd);
+
+ const int status = fgetc(_fd);
assert(status != EOF); // FIXME die gracefully
+
+ //printf("Status @ %X = %X\n", (unsigned)ftell(_fd) - 1, status);
+
if (status == 0xFF) {
assert(!feof(_fd));
- int type = fgetc(_fd);
+ const int type = fgetc(_fd);
if ((unsigned char)type == 0x2F) {
- //cerr << "SMF - hit EOT" << endl;
- return -1; // we hit the logical EOF anyway...
+ //cerr << _name << " hit EOT" << endl;
+ return -1;
} else {
- ev.size = 0;
- ev.time = delta_time; // this is needed regardless
+ *size = 0;
return 0;
}
}
- ev.time = delta_time;
- ev.size = midi_event_size((unsigned char)status) + 1;
+ const int event_size = midi_event_size((unsigned char)status) + 1;
+ if (event_size <= 0) {
+ *size = 0;
+ return 0;
+ }
+
+ // Make sure we have enough scratch buffer
+ if (*size < (unsigned)event_size)
+ *buf = (Byte*)realloc(*buf, event_size);
+
+ *size = event_size;
- if (ev.buffer == NULL)
- ev.buffer = (Byte*)malloc(sizeof(Byte) * ev.size);
+ /*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);
+ (*buf)[0] = (unsigned char)status;
+ if (event_size > 1)
+ fread((*buf) + 1, 1, *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("%s read event: delta = %u, size = %u, data = ", _name.c_str(), *delta_t, *size);
+ for (size_t i=0; i < *size; ++i) {
+ printf("%X ", (*buf)[i]);
}
printf("\n");*/
- return ev.size;
+ return (int)*size;
}
/** All stamps in audio frames */
nframes_t
SMFSource::read_unlocked (MidiRingBuffer& dst, nframes_t start, nframes_t cnt, nframes_t stamp_offset) const
{
- //cerr << "SMF - read " << start << ", count=" << cnt << ", offset=" << stamp_offset << endl;
+ //cerr << "SMF " << 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()];
- MidiEvent ev;
- 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_size = 0;
+ Byte* ev_buffer = 0;
- // FIXME: it would be an impressive feat to actually make this any slower :)
-
+ size_t scratch_size = 0; // keep track of scratch to minimize reallocs
+
+ // FIXME: don't seek to start and search every read (brutal!)
fseek(_fd, _header_size, 0);
// 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);
+ int ret = read_event(&ev_delta_t, &ev_size, &ev_buffer);
if (ret == -1) { // EOF
//cerr << "SMF - EOF\n";
break;
if (ret == 0) { // meta-event (skipped)
//cerr << "SMF - META\n";
- time += ev.time; // just accumulate delta time and ignore event
+ time += ev_delta_t; // 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)
+ time += ev_delta_t; // accumulate delta time
- if (ev.time >= start_ticks) {
- if (ev.time < start_ticks + (cnt / frames_per_beat)) {
+ if (time >= start_ticks) {
+ const nframes_t ev_frame_time = (nframes_t)(
+ ((time / (double)_ppqn) * frames_per_beat)) + stamp_offset;
+
+ if (ev_frame_time <= start + cnt)
+ dst.write(ev_frame_time, 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;
+
+ double time;
+ size_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;
+ Byte* buf = (Byte*)malloc(buf_capacity);
+
+ if (_model && ! _model->writing())
+ _model->start_write();
- fseek(_fd, 0, SEEK_END);
+ while (true) {
+ bool ret = src.full_peek(sizeof(double), (Byte*)&time);
+ if (!ret || time - _timeline_position > _length + cnt)
+ break;
- // 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]);
+ ret = src.read_prefix(&time, &size);
+ if (!ret)
+ break;
+
+ if (size > buf_capacity) {
+ buf_capacity = size;
+ buf = (Byte*)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;
+ }
- _last_ev_time = ev.time;
+ assert(time >= _timeline_position);
+ time -= _timeline_position;
+
+ const MidiEvent ev(time, size, buf);
+ append_event_unlocked(ev);
+
+ if (_model)
+ _model->append(ev);
}
fflush(_fd);
+ 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(const MidiEvent& ev)
+{
+ /*printf("SMF - writing event, time = %lf, size = %u, data = ", ev.time(), ev.size());
+ for (size_t i=0; i < ev.size(); ++i) {
+ printf("%X ", ev.buffer()[i]);
+ }
+ printf("\n");*/
+
+ assert(ev.time() >= 0);
+
+ assert(ev.time() >= _last_ev_time);
+
+ // 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));
+
+ const uint32_t delta_time = (uint32_t)((ev.time() - _last_ev_time) / frames_per_beat * _ppqn);
+
+ const 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();
+
+ _last_ev_time = ev.time();
+}
+
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);
+ _last_ev_time = 0;
+}
+
void
SMFSource::mark_streaming_write_completed ()
{
+ MidiSource::mark_streaming_write_completed();
+
if (!writable()) {
return;
}
+ flush_header();
flush_footer();
#if 0
}
int
-SMFSource::set_name (string newname, bool destructive)
+SMFSource::set_source_name (string newname, bool destructive)
{
//Glib::Mutex::Lock lm (_lock); FIXME
string oldpath = _path;
}
bool
-SMFSource::is_empty (string path)
+SMFSource::is_empty () const
{
- /* XXX fix me */
+ bool ret = (_track_size > 4);
+
+ //cerr << name() << " IS EMPTY: " << ret << endl;
- return false;
+ return ret;
}
void
-SMFSource::write_chunk_header(char id[4], uint32_t length)
+SMFSource::write_chunk_header(const char id[4], uint32_t length)
{
const uint32_t length_be = GUINT32_TO_BE(length);
}
void
-SMFSource::write_chunk(char id[4], uint32_t length, void* data)
+SMFSource::write_chunk(const char id[4], uint32_t length, void* data)
{
write_chunk_header(id, length);
{
assert(!feof(_fd));
- //int offset = ftell(_fd);
- //cerr << "SMF - reading var len at " << offset << endl;
-
uint32_t value;
unsigned char c;
}
void
-SMFSource::load_model(bool lock)
+SMFSource::load_model(bool lock, bool force_reload)
{
+ if (_writing)
+ return;
+
if (lock)
Glib::Mutex::Lock lm (_lock);
- destroy_model();
- _model = new MidiModel();
+ if (_model && !force_reload && !_model->empty()) {
+ //cerr << _name << " NOT reloading model " << _model.get() << " (" << _model->n_notes()
+ // << " notes)" << endl;
+ return;
+ } else {
+ cerr << _name << " loading model" << endl;
+ }
+
+ if (! _model) {
+ _model = boost::shared_ptr<MidiModel>(new MidiModel(_session));
+ 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);
- nframes_t time = 0;
+ uint64_t time = 0; /* in SMF ticks */
MidiEvent 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;
int ret;
- while ((ret = read_event(ev)) >= 0) {
- time += ev.time;
- ev.time = time;
-
- ev.time = (nframes_t)(ev.time * frames_per_beat / (double)_ppqn);
-
+ while ((ret = read_event(&delta_t, &ev.size(), &ev.buffer())) >= 0) {
+
+ time += delta_t;
+
if (ret > 0) { // didn't skip (meta) event
- //cerr << "ADDING EVENT TO MODEL: " << ev.time << endl;
+ // make ev.time absolute time in frames
+ ev.time() = (double)time * frames_per_beat / (double)_ppqn;
+
_model->append(ev);
}
+
+ if (ev.size() > scratch_size)
+ scratch_size = ev.size();
+ else
+ ev.size() = scratch_size;
}
+
+ _model->end_write(false);
+
+ free(ev.buffer());
}
void
SMFSource::destroy_model()
{
- delete _model;
- _model = NULL;
+ //cerr << _name << " destroying model " << _model.get() << endl;
+ _model.reset();
}
projects / ardour.git / blobdiff