* Copyright (C) 2008 Dave Robillard <http://drobilla.net>
* Copyright (C) 2000-2008 Paul Davis
* Author: Hans Baier
- *
+ *
* Evoral is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
- *
+ *
* Evoral is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
- *
+ *
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#include "evoral/Event.hpp"
#include "evoral/SMF.hpp"
#include "evoral/midi_util.h"
+#include "pbd/file_manager.h"
using namespace std;
namespace Evoral {
SMF::~SMF()
-{
+{
if (_smf) {
smf_delete(_smf);
_smf = 0;
_smf_track = 0;
- }
+ }
}
uint16_t
SMF::open(const std::string& path, int track) THROW_FILE_ERROR
{
assert(track >= 1);
- if (_smf) {
+ if (_smf) {
smf_delete(_smf);
}
-
+
_file_path = path;
- _smf = smf_load(_file_path.c_str());
- if (_smf == NULL) {
+
+ PBD::StdioFileDescriptor d (_file_path, "r");
+ FILE* f = d.allocate ();
+ if (f == 0) {
+ return -1;
+ }
+
+ if ((_smf = smf_load (f)) == 0) {
return -1;
}
- _smf_track = smf_get_track_by_number(_smf, track);
- if (!_smf_track)
+ if ((_smf_track = smf_get_track_by_number(_smf, track)) == 0) {
return -2;
+ }
//cerr << "Track " << track << " # events: " << _smf_track->number_of_events << endl;
if (_smf_track->number_of_events == 0) {
_smf_track->next_event_number = 1;
_empty = false;
}
-
+
return 0;
}
SMF::create(const std::string& path, int track, uint16_t ppqn) THROW_FILE_ERROR
{
assert(track >= 1);
- if (_smf) {
+ if (_smf) {
smf_delete(_smf);
}
-
+
_file_path = path;
_smf = smf_new();
- if (smf_set_ppqn(_smf, ppqn) != 0) {
- throw FileError();
- }
-
+
if (_smf == NULL) {
+ return -1;
+ }
+
+ if (smf_set_ppqn(_smf, ppqn) != 0) {
return -1;
}
-
+
for (int i = 0; i < track; ++i) {
_smf_track = smf_track_new();
assert(_smf_track);
return -2;
_smf_track->next_event_number = 0;
+
+ {
+ /* put a stub file on disk */
+
+ PBD::StdioFileDescriptor d (_file_path, "w+");
+ FILE* f = d.allocate ();
+ if (f == 0) {
+ return -1;
+ }
+
+ if (smf_save (_smf, f)) {
+ return -1;
+ }
+ }
+
_empty = true;
-
+
return 0;
}
SMF::close() THROW_FILE_ERROR
{
if (_smf) {
- if (smf_save(_smf, _file_path.c_str()) != 0) {
- throw FileError();
- }
smf_delete(_smf);
_smf = 0;
_smf_track = 0;
_smf_track->next_event_number = 1;
}
+static void
+midify_note_id (event_id_t note_id, uint8_t* buf)
+{
+ buf[0] = (note_id & 0xfe000000) >> 25;
+ buf[1] = (note_id & 0x01fc0000) >> 18;
+ buf[2] = (note_id & 0x0003f800) >> 11;
+ buf[3] = (note_id & 0x000007f0) >> 4;
+ buf[4] = (note_id & 0x0000000f);
+}
+
+static event_id_t
+unmidify_note_id (uint8_t* buf)
+{
+ return ((int) buf[0] << 25) | ((int) buf[1] << 18) | ((int) buf[2] << 11) | ((int)buf[3] << 4) | (int) buf[4];
+}
+
/** 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.
* \a size must be the capacity of \a buf. If it is not large enough, \a buf will
* be reallocated and *size will be set to the new size of buf.
*
+ * if the event is a meta-event and is an Evoral Note ID, then \a note_id will be set
+ * to the value of the NoteID; otherwise, meta-events will set \a note_id to -1.
+ *
* \return event length (including status byte) on success, 0 if event was
- * skipped (e.g. a meta event), or -1 on EOF (or end of track).
+ * a meta event, or -1 on EOF (or end of track).
*/
int
-SMF::read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const
+SMF::read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf, event_id_t* note_id) const
{
smf_event_t* event;
-
+
assert(delta_t);
assert(size);
assert(buf);
-
- if ((event = smf_track_get_next_event(_smf_track)) != NULL) {
- if (smf_event_is_metadata(event)) {
- return 0;
- }
- *delta_t = event->delta_time_pulses;
-
- int event_size = event->midi_buffer_length;
- assert(event_size > 0);
-
- // Make sure we have enough scratch buffer
- if (*size < (unsigned)event_size) {
- *buf = (uint8_t*)realloc(*buf, event_size);
- }
- memcpy(*buf, event->midi_buffer, size_t(event_size));
- *size = event_size;
-
+ assert(note_id);
+
+ if ((event = smf_track_get_next_event(_smf_track)) != NULL) {
+
+ *delta_t = event->delta_time_pulses;
+
+ if (smf_event_is_metadata(event)) {
+ *note_id = -1; // "no note id in this meta-event */
+ if (event->midi_buffer[1] == 0x99) { // Evoral meta-event
+ if (event->midi_buffer[2] == 6) { // 6 bytes following
+ if (event->midi_buffer[3] == 0x1) { // Evoral Note ID
+ *note_id = unmidify_note_id (&event->midi_buffer[4]);
+ cerr << "Loaded Event ID " << *note_id << endl;
+ }
+ }
+ }
+ return 0; /* this is a meta-event */
+ }
+
+ int event_size = event->midi_buffer_length;
+ assert(event_size > 0);
+
+ // Make sure we have enough scratch buffer
+ if (*size < (unsigned)event_size) {
+ *buf = (uint8_t*)realloc(*buf, event_size);
+ }
+ memcpy(*buf, event->midi_buffer, size_t(event_size));
+ *size = event_size;
+
assert(midi_event_is_valid(*buf, *size));
/* printf("SMF::read_event @ %u: ", *delta_t);
for (size_t i = 0; i < *size; ++i) {
printf("%X ", (*buf)[i]);
} printf("\n") */
-
- return event_size;
- } else {
- return -1;
- }
+
+ return event_size;
+ } else {
+ return -1;
+ }
}
void
-SMF::append_event_delta(uint32_t delta_t, uint32_t size, const uint8_t* buf)
+SMF::append_event_delta(uint32_t delta_t, uint32_t size, const uint8_t* buf, event_id_t note_id)
{
if (size == 0) {
return;
}
-
+
/* printf("SMF::append_event_delta @ %u:", delta_t);
for (size_t i = 0; i < size; ++i) {
printf("%X ", buf[i]);
- } printf("\n"); */
+ } printf("\n"); */
if (!midi_event_is_valid(buf, size)) {
cerr << "WARNING: SMF ignoring illegal MIDI event" << endl;
smf_event_t* event;
+ /* XXX july 2010: currently only store event ID's for notes
+ */
+
+ if (((buf[0] & 0xf0) == MIDI_CMD_NOTE_ON || ((buf[0] & 0xf0) == MIDI_CMD_NOTE_OFF)) && note_id >= 0) {
+ event = smf_event_new ();
+ assert(event != NULL);
+
+ event->midi_buffer = new uint8_t[9];
+ event->midi_buffer_length = 9;
+
+ event->midi_buffer[0] = 0xff; // Meta-event
+ event->midi_buffer[1] = 0x99; // Evoral meta-event
+ event->midi_buffer[2] = 6; // 6 bytes of data follow */
+ event->midi_buffer[3] = 0x1; // Evoral Note ID
+ midify_note_id (note_id, &event->midi_buffer[4]);
+
+ assert(_smf_track);
+ smf_track_add_event_delta_pulses(_smf_track, event, 0);
+ }
+
event = smf_event_new_from_pointer(buf, size);
assert(event != NULL);
-
+
assert(_smf_track);
smf_track_add_event_delta_pulses(_smf_track, event, delta_t);
_empty = false;
{
assert(_smf_track);
smf_track_delete(_smf_track);
-
+
_smf_track = smf_track_new();
assert(_smf_track);
-
+
smf_add_track(_smf, _smf_track);
assert(_smf->number_of_tracks == 1);
}
void
SMF::end_write() THROW_FILE_ERROR
{
- if (smf_save(_smf, _file_path.c_str()) != 0)
+ PBD::StdioFileDescriptor d (_file_path, "w+");
+ FILE* f = d.allocate ();
+ if (f == 0) {
+ throw FileError ();
+ }
+
+ if (smf_save(_smf, f) != 0) {
throw FileError();
+ }
}
double
return round (val * div) / div;
}
+void
+SMF::set_path (const std::string& p)
+{
+ _file_path = p;
+}
} // namespace Evoral
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