#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/smf_reader.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))
+ , SMF ()
, _flags (Flag(flags | Writable)) // FIXME: this needs to be writable for now
, _allow_remove_if_empty(true)
- , _fd (0)
- , _last_ev_time(0)
- , _track_size(4) // 4 bytes for the ever-present EOT event
- , _header_size(22)
- , _empty(true)
{
/* constructor used for new internal-to-session files. file cannot exist */
throw failed_constructor ();
}
- if (open()) {
+ if (open(path)) {
throw failed_constructor ();
}
: MidiSource (s, node)
, _flags (Flag (Writable|CanRename))
, _allow_remove_if_empty(true)
- , _fd (0)
- , _last_ev_time(0)
- , _track_size(4) // 4 bytes for the ever-present EOT event
- , _header_size(22)
- , _empty(true)
{
/* constructor used for existing internal-to-session files. file must exist */
throw failed_constructor ();
}
- if (open()) {
+ if (open(_path)) {
throw failed_constructor ();
}
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()
-{
- //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);
- _empty = _track_size > 4;
- //cerr << "SMF - read track size " << _track_size << endl;
-
- // 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;
- _empty = true;
-
- // Write a tentative header just to pad things out so writing happens in the right spot
- flush_header();
- flush_footer();
- }
-
- return (_fd == 0) ? -1 : 0;
-}
-
-void
-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()
-{
- // FIXME: write timeline position somehow?
-
- //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 quarter note (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, SEEK_SET);
- write_chunk("MThd", 6, data);
- write_chunk_header("MTrk", _track_size);
-
- fflush(_fd);
-
- return 0;
-}
-
-int
-SMFSource::flush_footer()
-{
- //cerr << path() << " SMF Flushing footer\n";
- seek_to_footer_position();
- write_footer();
- seek_to_footer_position();
-
- 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.
- *
- * 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).
- *
- * \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(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const
-{
- if (feof(_fd)) {
- return -1;
- }
-
- 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) {
- if (feof(_fd)) {
- return -1; // Premature EOF
- }
- const int type = fgetc(_fd);
- if ((unsigned char)type == 0x2F) {
- return -1; // hit end of track
- } else {
- *size = 0;
- return 0;
- }
- }
-
- 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 = (uint8_t*)realloc(*buf, event_size);
-
- *size = event_size;
-
- (*buf)[0] = (unsigned char)status;
- if (event_size > 1)
- fread((*buf) + 1, 1, *size - 1, _fd);
-
- /*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 (int)*size;
-}
-
/** All stamps in audio frames */
nframes_t
SMFSource::read_unlocked (MidiRingBuffer& dst, nframes_t start, nframes_t cnt, nframes_t stamp_offset, nframes_t negative_stamp_offset) const
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);
+ 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.tempo_map().meter_at(_timeline_position));
- const 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)) {
+ while (!SMF::eof()) {
int ret = read_event(&ev_delta_t, &ev_size, &ev_buffer);
if (ret == -1) { // EOF
//cerr << "SMF - EOF\n";
if (time >= start_ticks) {
const nframes_t ev_frame_time = (nframes_t)(
- ((time / (double)_ppqn) * frames_per_beat)) + stamp_offset;
+ ((time / (double)ppqn()) * frames_per_beat)) + stamp_offset;
if (ev_frame_time <= start + cnt)
dst.write(ev_frame_time - negative_stamp_offset, ev_type, ev_size, ev_buffer);
{
_write_data_count = 0;
- EventTime time;
- EventType type;
- uint32_t size;
+ Evoral::EventTime time;
+ Evoral::EventType type;
+ uint32_t size;
size_t buf_capacity = 4;
uint8_t* buf = (uint8_t*)malloc(buf_capacity);
append_event_unlocked(Frames, ev);
- if (_model)
+ if (_model) {
_model->append(ev);
+ }
}
- fflush(_fd);
+ SMF::flush();
free(buf);
const nframes_t oldlen = _length;
assert(ev.time() >= 0);
- if (ev.time() < _last_ev_time) {
- cerr << "SMFSource: Warning: Skipping event with ev.time() < _last_ev_time" << endl;
+ if (ev.time() < last_event_time()) {
+ cerr << "SMFSource: Warning: Skipping event with ev.time() < last.time()" << endl;
return;
}
_session.engine().frame_rate(),
_session.tempo_map().meter_at(_timeline_position));
- delta_time = (uint32_t)((ev.time() - _last_ev_time) / frames_per_beat * _ppqn);
+ delta_time = (uint32_t)((ev.time() - last_event_time()) / frames_per_beat * ppqn());
} else {
assert(unit == Beats);
- delta_time = (uint32_t)((ev.time() - _last_ev_time) * _ppqn);
+ delta_time = (uint32_t)((ev.time() - last_event_time()) * ppqn());
}
-
- const size_t stamp_size = write_var_len(delta_time);
- fwrite(ev.buffer(), 1, ev.size(), _fd);
+ SMF::append_event_unlocked(delta_time, ev);
- _track_size += stamp_size + ev.size();
_write_data_count += ev.size();
- _last_ev_time = ev.time();
-
- if (ev.size() > 0)
- _empty = false;
}
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);
+ SMF::begin_write (start_frame);
}
void
}
_model->set_edited(false);
- flush_header();
- flush_footer();
+ SMF::end_write ();
}
void
return 0;//rename_peakfile (peak_path (_path));
}
-bool
-SMFSource::is_empty () const
-{
- return _empty;
-}
-
-
-void
-SMFSource::write_chunk_header(const 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(const 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;
-}
-
void
SMFSource::load_model(bool lock, bool force_reload)
{
- if (_writing)
+ if (_writing) {
return;
+ }
+
- if (lock)
+ if (lock) {
Glib::Mutex::Lock lm (_lock);
+ }
- if (_model && !force_reload && !_model->empty())
+ if (_model && !force_reload && !_model->empty()) {
return;
+ }
if (! _model) {
_model = boost::shared_ptr<MidiModel>(new MidiModel(this));
}
_model->start_write();
-
- fseek(_fd, _header_size, SEEK_SET);
+ SMF::seek_to_start();
uint64_t time = 0; /* in SMF ticks */
Evoral::Event ev;
if (ret > 0) { // didn't skip (meta) event
// make ev.time absolute time in frames
- ev.time() = (double)time * frames_per_beat / (double)_ppqn;
+ 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)
+ if (ev.size() > scratch_size) {
scratch_size = ev.size();
- else
+ } 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);
_model.reset();
}
+void
+SMFSource::flush_midi()
+{
+ SMF::end_write();
+}
+
projects / ardour.git / blobdiff