#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)
, _fd (0)
throw failed_constructor ();
}
- //cerr << "SMF Source path: " << path << endl;
+ 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)
, _fd (0)
throw failed_constructor ();
}
- //cerr << "SMF Source name: " << _name << endl;
-
assert(_name.find("/") == string::npos);
}
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+");
+ 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
- set_timeline_position(0);
flush_header();
- write_footer();
- seek_to_end();
+ flush_footer();
}
-
+
return (_fd == 0) ? -1 : 0;
}
void
-SMFSource::seek_to_end()
+SMFSource::close()
{
+ 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()
{
- seek_to_end();
+ //cerr << path() << " SMF Flushing footer\n";
+ seek_to_footer_position();
write_footer();
- seek_to_end();
+ seek_to_footer_position();
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);
assert(size);
assert(buf);
- *delta_t = read_var_len();
- assert(!feof(_fd));
+ 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);
- assert(status != EOF); // FIXME die gracefully
+
+ if (status == EOF) {
+ return -1; // Premature EOF
+ }
//printf("Status @ %X = %X\n", (unsigned)ftell(_fd) - 1, status);
if (status == 0xFF) {
- assert(!feof(_fd));
+ if (feof(_fd)) {
+ return -1; // Premature EOF
+ }
const int type = fgetc(_fd);
if ((unsigned char)type == 0x2F) {
- //cerr << _name << " hit EOT" << endl;
- return -1;
+ return -1; // hit end of track
} else {
*size = 0;
return 0;
*size = event_size;
- /*if (ev.buffer == NULL)
- ev.buffer = (Byte*)malloc(sizeof(Byte) * ev.size);*/
-
(*buf)[0] = (unsigned char)status;
if (event_size > 1)
fread((*buf) + 1, 1, *size - 1, _fd);
- /*printf("%s read event: delta = %u, size = %u, data = ", _name.c_str(), *delta_t, *size);
+ /*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]);
}
/** 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
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);
+ 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));
const uint64_t start_ticks = (uint64_t)((start / frames_per_beat) * _ppqn);
((time / (double)_ppqn) * frames_per_beat)) + stamp_offset;
if (ev_frame_time <= start + cnt)
- dst.write(ev_frame_time, ev_size, ev_buffer);
+ dst.write(ev_frame_time - negative_stamp_offset, ev_size, ev_buffer);
else
break;
}
while (true) {
bool ret = src.full_peek(sizeof(double), (Byte*)&time);
- if (!ret || time > _length + cnt)
+ if (!ret || time - _timeline_position > _length + cnt)
break;
ret = src.read_prefix(&time, &size);
assert(time >= _timeline_position);
time -= _timeline_position;
- assert(time >= _last_ev_time);
-
- const MidiEvent ev(time, size, buf);
- append_event_unlocked(MidiEvent(ev));
+
+ 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;
+ }
+
+ append_event_unlocked(Frames, ev);
if (_model)
_model->append(ev);
const nframes_t oldlen = _length;
update_length(oldlen, cnt);
- ViewDataRangeReady (oldlen, cnt); /* EMIT SIGNAL */
+ ViewDataRangeReady (_timeline_position + oldlen, cnt); /* EMIT SIGNAL */
return cnt;
}
void
-SMFSource::append_event_unlocked(const MidiEvent& ev)
+SMFSource::append_event_unlocked(EventTimeUnit unit, const MIDI::Event& ev)
{
- /*printf("SMF - writing event, time = %lf, size = %u, data = ", ev.time(), ev.size());
+ 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");*/
-
+ 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());
+ uint32_t delta_time = 0;
- const uint32_t delta_time = (uint32_t)((ev.time() - _last_ev_time) / frames_per_beat * _ppqn);
+ 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);
_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 ()
{
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)
return ret;
}
-uint32_t
-SMFSource::read_var_len() const
-{
- assert(!feof(_fd));
-
- 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 (lock)
Glib::Mutex::Lock lm (_lock);
- if (_model && !force_reload && !_model->empty()) {
- //cerr << _name << " NOT reloading model " << _model.get() << " (" << _model->n_notes()
- // << " notes)" << endl;
+ if (_model && !force_reload && !_model->empty())
return;
- } else {
- cerr << _name << " loading model" << endl;
- }
if (! _model) {
- _model = boost::shared_ptr<MidiModel>(new MidiModel(_session));
+ _model = boost::shared_ptr<MidiModel>(new MidiModel(this));
cerr << _name << " loaded new model " << _model.get() << endl;
} else {
cerr << _name << " reloading model " << _model.get()
_model->start_write();
- fseek(_fd, _header_size, 0);
+ fseek(_fd, _header_size, SEEK_SET);
uint64_t time = 0; /* in SMF ticks */
- MidiEvent ev;
+ 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;
}
_model->end_write(false);
+ _model->set_edited(false);
free(ev.buffer());
}
projects / ardour.git / blobdiff