/* This file is part of Evoral.
- * Copyright (C) 2008 Dave Robillard <http://drobilla.net>
+ * Copyright (C) 2008 David Robillard <http://drobilla.net>
* Copyright (C) 2000-2008 Paul Davis
* Author: Hans Baier
*
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#define __STDC_LIMIT_MACROS 1
#include <cassert>
#include <cmath>
#include <iostream>
if (f == 0) {
return -1;
}
-
- _smf = smf_load (f);
- if (_smf == NULL) {
+
+ 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) {
_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) {
- PBD::StdioFileDescriptor d (_file_path, "w+");
- FILE* f = d.allocate ();
- if (f == 0) {
- throw FileError ();
- }
-
- if (smf_save(_smf, f) != 0) {
- throw FileError();
- }
smf_delete(_smf);
_smf = 0;
_smf_track = 0;
* \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);
+ 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)) {
- return 0;
+ *note_id = -1; // "no note id in this meta-event */
+
+ if (event->midi_buffer[1] == 0x7f) { // Sequencer-specific
+
+ uint32_t evsize;
+ uint32_t lenlen;
+
+ if (smf_extract_vlq (&event->midi_buffer[2], event->midi_buffer_length-2, &evsize, &lenlen) == 0) {
+
+ if (event->midi_buffer[2+lenlen] == 0x99 && // Evoral
+ event->midi_buffer[3+lenlen] == 0x1) { // Evoral Note ID
+
+ uint32_t id;
+ uint32_t idlen;
+
+ if (smf_extract_vlq (&event->midi_buffer[4+lenlen], event->midi_buffer_length-(4+lenlen), &id, &idlen) == 0) {
+ *note_id = id;
+ }
+ }
+ }
+ }
+ return 0; /* this is a meta-event */
}
int event_size = event->midi_buffer_length;
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") */
+ for (size_t i = 0; i < *size; ++i) {
+ printf("%X ", (*buf)[i]);
+ } printf("\n") */
return event_size;
} else {
}
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"); */
+ for (size_t i = 0; i < size; ++i) {
+ printf("%X ", buf[i]);
+ } 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, program changes and bank changes
+ */
+
+ uint8_t const c = buf[0] & 0xf0;
+ bool const store_id = (
+ c == MIDI_CMD_NOTE_ON ||
+ c == MIDI_CMD_NOTE_OFF ||
+ c == MIDI_CMD_PGM_CHANGE ||
+ (c == MIDI_CMD_CONTROL && (buf[1] == MIDI_CTL_MSB_BANK || buf[1] == MIDI_CTL_LSB_BANK))
+ );
+
+ if (store_id && note_id >= 0) {
+ int idlen;
+ int lenlen;
+ uint8_t idbuf[16];
+ uint8_t lenbuf[16];
+
+ event = smf_event_new ();
+ assert(event != NULL);
+
+ /* generate VLQ representation of note ID */
+ idlen = smf_format_vlq (idbuf, sizeof(idbuf), note_id);
+
+ /* generate VLQ representation of meta event length,
+ which is the idlen + 2 bytes (Evoral type ID plus Note ID type)
+ */
+
+ lenlen = smf_format_vlq (lenbuf, sizeof(lenbuf), idlen+2);
+
+ event->midi_buffer_length = 2 + lenlen + 2 + idlen;
+ /* this should be allocated by malloc(3) because libsmf will
+ call free(3) on it
+ */
+ event->midi_buffer = (uint8_t*) malloc (sizeof (uint8_t*) * event->midi_buffer_length);
+
+ event->midi_buffer[0] = 0xff; // Meta-event
+ event->midi_buffer[1] = 0x7f; // Sequencer-specific
+ memcpy (&event->midi_buffer[2], lenbuf, lenlen);
+ event->midi_buffer[2+lenlen] = 0x99; // Evoral type ID
+ event->midi_buffer[3+lenlen] = 0x1; // Evoral type Note ID
+ memcpy (&event->midi_buffer[4+lenlen], idbuf, idlen);
+
+ assert(_smf_track);
+ smf_track_add_event_delta_pulses(_smf_track, event, 0);
+ }
+
event = smf_event_new_from_pointer(buf, size);
assert(event != NULL);
void
SMF::end_write() THROW_FILE_ERROR
{
-#if 0
- /* don't create empty MIDI files
- */
-
- smf_rewind (_smf); // smf_save() would have done this anyway
- if (smf_peek_next_event (_smf) == 0) {
- return;
- }
-#endif
-
PBD::StdioFileDescriptor d (_file_path, "w+");
FILE* f = d.allocate ();
if (f == 0) {
- throw FileError ();
+ throw FileError (_file_path);
}
-
+
if (smf_save(_smf, f) != 0) {
- throw FileError();
+ throw FileError (_file_path);
}
}
return round (val * div) / div;
}
+void
+SMF::set_path (const std::string& p)
+{
+ _file_path = p;
+}
} // namespace Evoral
projects / ardour.git / blobdiff