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Extensive changes to improve NoteTrack display and (some) editing, NoteTrack playback via MIDI, and Midi-to-Audio alignment.

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rbdannenberg
2010-09-18 21:02:36 +00:00
parent f6327602e8
commit a1f0e5ed5b
96 changed files with 5679 additions and 3566 deletions
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65
lib-src/portsmf/allegrord.cpp
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@@ -27,6 +27,8 @@ public:
Alg_seq_ptr seq;
double tsnum;
double tsden;
double offset;
bool offset_found;
Alg_reader(istream *a_file, Alg_seq_ptr new_seq);
void readline();
@@ -73,15 +75,20 @@ Alg_reader::Alg_reader(istream *a_file, Alg_seq_ptr new_seq)
tsnum = 4; // default time signature
tsden = 4;
seq = new_seq;
offset = 0.0;
offset_found = false;
}
Alg_error alg_read(istream &file, Alg_seq_ptr new_seq)
Alg_error alg_read(istream &file, Alg_seq_ptr new_seq, double *offset_ptr)
// read a sequence from allegro file
{
assert(new_seq);
Alg_reader alg_reader(&file, new_seq);
bool err = alg_reader.parse();
if (!err && offset_ptr) {
*offset_ptr = alg_reader.offset;
}
return (err ? alg_error_syntax : alg_no_error);
}
@@ -169,27 +176,38 @@ bool Alg_reader::parse()
// parse_int ignores the first character of the argument
track_num = parse_int(field);
seq->add_track(track_num);
}
// maybe we have a sequence or track name
line_parser.get_remainder(field);
// if there is a non-space character after #track n then
// use it as sequence or track name. Note that because we
// skip over spaces, a sequence or track name cannot begin
// with leading blanks. Another decision is that the name
// must be at time zero
if (field.length() > 0) {
// insert the field as sequence name or track name
Alg_update_ptr update = new Alg_update;
update->chan = -1;
update->time = 0;
update->set_identifier(-1);
// sequence name is whatever is on track 0
// other tracks have track names
const char *attr =
(track_num == 0 ? "seqnames" : "tracknames");
update->parameter.set_attr(symbol_table.insert_string(attr));
update->parameter.s = heapify(field.c_str());
seq->add_event(update, track_num);
// maybe we have a sequence or track name
line_parser.get_remainder(field);
// if there is a non-space character after #track n then
// use it as sequence or track name. Note that because we
// skip over spaces, a sequence or track name cannot begin
// with leading blanks. Another decision is that the name
// must be at time zero
if (field.length() > 0) {
// insert the field as sequence name or track name
Alg_update_ptr update = new Alg_update;
update->chan = -1;
update->time = 0;
update->set_identifier(-1);
// sequence name is whatever is on track 0
// other tracks have track names
const char *attr =
(track_num == 0 ? "seqnames" : "tracknames");
update->parameter.set_attr(
symbol_table.insert_string(attr));
update->parameter.s = heapify(field.c_str());
seq->add_event(update, track_num);
}
} else if (streql(field.c_str(), "#offset")) {
if (offset_found) {
parse_error(field, 0, "#offset specified twice");
}
offset_found = true;
line_parser.get_nonspace_quoted(field); // number
field.insert(0, " "); // need char at beginning because
// parse_real ignores first character in the argument
offset = parse_real(field);
}
} else {
// we must have a track to insert into
@@ -456,6 +474,7 @@ int Alg_reader::find_real_in(string &field, int n)
// scans from offset n to the end of a real constant
bool decimal = false;
int len = field.length();
if (n < len && field[n] == '-') n += 1; // parse one minus sign
for (int i = n; i < len; i++) {
char c = field[i];
if (!isdigit(c)) {
@@ -466,7 +485,7 @@ int Alg_reader::find_real_in(string &field, int n)
}
}
}
return field.length();
return len;
}