/* 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;
}
-
+
if ((_smf = smf_load (f)) == 0) {
return -1;
}
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 = smf_new();
if (_smf == NULL) {
- return -1;
+ return -1;
}
if (smf_set_ppqn(_smf, ppqn) != 0) {
_smf_track->next_event_number = 0;
- {
- /* put a stub file on disk */
+ {
+ /* 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;
- }
- }
+ PBD::StdioFileDescriptor d (_file_path, "w+");
+ FILE* f = d.allocate ();
+ if (f == 0) {
+ return -1;
+ }
+
+ if (smf_save (_smf, f)) {
+ return -1;
+ }
+ }
_empty = true;
_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.
assert(delta_t);
assert(size);
assert(buf);
- assert(note_id);
+ 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;
- }
- }
- }
+ *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 */
}
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 {
}
/* 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
- */
+ /* 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 (((buf[0] & 0xf0) == MIDI_CMD_NOTE_ON || ((buf[0] & 0xf0) == MIDI_CMD_NOTE_OFF)) && note_id >= 0) {
- event = smf_event_new ();
- assert(event != NULL);
+ if (store_id && note_id >= 0) {
+ int idlen;
+ int lenlen;
+ uint8_t idbuf[16];
+ uint8_t lenbuf[16];
- event->midi_buffer = new uint8_t[9];
- event->midi_buffer_length = 9;
+ event = smf_event_new ();
+ assert(event != NULL);
- 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]);
+ /* generate VLQ representation of note ID */
+ idlen = smf_format_vlq (idbuf, sizeof(idbuf), note_id);
- assert(_smf_track);
- smf_track_add_event_delta_pulses(_smf_track, event, 0);
- }
+ /* 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);
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);
}
}
void
SMF::set_path (const std::string& p)
{
- _file_path = p;
+ _file_path = p;
}
} // namespace Evoral
projects / ardour.git / blobdiff