#include <ardour/midi_util.h>
#include <ardour/tempo.h>
#include <ardour/audioengine.h>
+#include <ardour/smf_reader.h>
#include "i18n.h"
SMFSource::SMFSource (Session& s, std::string path, Flag flags)
: MidiSource (s, region_name_from_path(path, false))
- , _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);
}
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
SMFSource::removable () const
{
return (_flags & Removable) && ((_flags & RemoveAtDestroy) ||
- ((_flags & RemovableIfEmpty) && is_empty (_path)));
+ ((_flags & RemovableIfEmpty) && is_empty()));
}
int
return 0;
}
+/** Attempt to open the SMF file for reading and writing.
+ *
+ * Currently SMFSource is always read/write.
+ *
+ * \return 0 on success
+ * -1 if the file can not be opened for reading,
+ * -2 if the file can not be opened for writing
+ */
int
SMFSource::open()
{
// We're making a new file
} else {
_fd = fopen(path().c_str(), "w+");
- _track_size = 0;
+ if (_fd == NULL) {
+ cerr << "ERROR: Can not open SMF file " << path() << " for writing: " <<
+ strerror(errno) << endl;
+ return -2;
+ }
+ _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)
+ flush_footer();
}
-
+
return (_fd == 0) ? -1 : 0;
}
-int
-SMFSource::update_header (nframes_t when, struct tm&, time_t)
+void
+SMFSource::close()
{
- _timeline_position = when;
- return flush_header();
+ if (_fd) {
+ flush_header();
+ flush_footer();
+ fclose(_fd);
+ _fd = NULL;
+ }
+}
+
+void
+SMFSource::seek_to_footer_position()
+{
+ uint8_t buffer[4];
+
+ // lets check if there is a track end marker at the end of the data
+ fseek(_fd, -4, SEEK_END);
+ //cerr << "SMFSource::seek_to_footer_position: At position: " << ftell(_fd);
+ size_t read_bytes = fread(buffer, sizeof(uint8_t), 4, _fd);
+ /*cerr << " read size: " << read_bytes << " buffer: ";
+ for (size_t i=0; i < read_bytes; ++i) {
+ printf("%x ", buffer[i]);
+ }
+ printf("\n");
+ */
+
+ if( (read_bytes == 4) &&
+ buffer[0] == 0x00 &&
+ buffer[1] == 0xFF &&
+ buffer[2] == 0x2F &&
+ buffer[3] == 0x00) {
+ // there is one, so overwrite it
+ fseek(_fd, -4, SEEK_END);
+ } else {
+ // there is none, so append
+ fseek(_fd, 0, SEEK_END);
+ }
}
int
-SMFSource::flush_header ()
+SMFSource::flush_header()
{
// FIXME: write timeline position somehow?
- cerr << "SMF Flushing header\n";
+ //cerr << path() << " 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
+ const uint16_t division = GUINT16_TO_BE(_ppqn); // Pulses per quarter note (beat)
char data[6];
memcpy(data, &type, 2);
_fd = freopen(path().c_str(), "r+", _fd);
assert(_fd);
- fseek(_fd, 0, 0);
+ fseek(_fd, 0, SEEK_SET);
write_chunk("MThd", 6, data);
- //if (_track_size > 0) {
- write_chunk_header("MTrk", _track_size);
- //}
+ write_chunk_header("MTrk", _track_size);
fflush(_fd);
int
SMFSource::flush_footer()
{
- cerr << "SMF - Writing EOT\n";
+ //cerr << path() << " SMF Flushing footer\n";
+ seek_to_footer_position();
+ write_footer();
+ seek_to_footer_position();
- 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()
+{
+ 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(jack_midi_event_t& 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(!feof(_fd));
- int status = fgetc(_fd);
- assert(status != EOF); // FIXME die gracefully
+ assert(delta_t);
+ assert(size);
+ assert(buf);
+
+ try {
+ *delta_t = SMFReader::read_var_len(_fd);
+ } catch (...) {
+ return -1; // Premature EOF
+ }
+
+ if (feof(_fd)) {
+ return -1; // Premature EOF
+ }
+
+ const int status = fgetc(_fd);
+
+ if (status == EOF) {
+ return -1; // Premature EOF
+ }
+
+ //printf("Status @ %X = %X\n", (unsigned)ftell(_fd) - 1, status);
+
if (status == 0xFF) {
- assert(!feof(_fd));
- int type = fgetc(_fd);
+ if (feof(_fd)) {
+ return -1; // Premature EOF
+ }
+ const int type = fgetc(_fd);
if ((unsigned char)type == 0x2F) {
- //cerr << "SMF - hit EOT" << endl;
- return -1; // we hit the logical EOF anyway...
+ return -1; // hit end of track
} 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;
-
- if (ev.buffer == NULL)
- ev.buffer = (Byte*)malloc(sizeof(Byte) * ev.size);
+ 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;
- 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("SMFSource %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
+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_size = 0;
+ Byte* 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!)
+ fseek(_fd, _header_size, SEEK_SET);
// 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 (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_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;
+ }
+
+ assert(time >= _timeline_position);
+ time -= _timeline_position;
+
+ const MIDI::Event ev(time, size, buf);
+ 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;
+ }
- _last_ev_time = ev.time;
+ append_event_unlocked(Frames, 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(EventTimeUnit unit, const MIDI::Event& ev)
+{
+ 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);
+ assert(ev.time() >= _last_ev_time);
+
+ 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_ev_time) / frames_per_beat * _ppqn);
+ } else {
+ assert(unit == Beats);
+ delta_time = (uint32_t)((ev.time() - _last_ev_time) * _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;
+ fseek(_fd, _header_size, SEEK_SET);
+}
+
void
SMFSource::mark_streaming_write_completed ()
{
+ MidiSource::mark_streaming_write_completed();
+
if (!writable()) {
return;
}
+ _model->set_edited(false);
+ flush_header();
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
}
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)
}
bool
-SMFSource::is_empty (string path)
+SMFSource::is_empty () const
{
- /* XXX fix me */
+ bool ret = (_track_size > 4);
- return false;
+ //cerr << name() << " IS EMPTY: " << ret << endl;
+
+ 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);
return ret;
}
-uint32_t
-SMFSource::read_var_len() const
-{
- 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);
- }
-
- return value;
-}
-
void
SMFSource::load_model(bool lock, bool force_reload)
{
+ if (_writing)
+ return;
+
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();
+ 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);
+ fseek(_fd, _header_size, SEEK_SET);
uint64_t time = 0; /* in SMF ticks */
- jack_midi_event_t ev;
- ev.time = 0;
- ev.size = 0;
- ev.buffer = NULL;
+ MIDI::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;
int ret;
- while ((ret = read_event(ev)) >= 0) {
- time += ev.time;
+ while ((ret = read_event(&delta_t, &ev.size(), &ev.buffer())) >= 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() = (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); /* FIXME: delete stuck notes iff percussion? */
+ _model->end_write(false);
+ _model->set_edited(false);
- _model_loaded = true;
+ free(ev.buffer());
}
void
SMFSource::destroy_model()
{
- delete _model;
- _model = NULL;
+ //cerr << _name << " destroying model " << _model.get() << endl;
+ _model.reset();
}