static int
cmd_events(char *notused)
{
smf_event_t *event;
if (selected_track == NULL) {
g_critical("No track selected - please use 'track <number>' command first.");
return (-1);
}
if (selected_track->number_of_events == 0) {
g_message("Selected track is empty.");
return (0);
}
g_message("List of events in track %d follows:", selected_track->track_number);
smf_rewind(smf);
while ((event = smf_track_get_next_event(selected_track)) != NULL)
show_event(event);
smf_rewind(smf);
return (0);
}
/**
* Seeks the SMF to the given event. After calling this routine, smf_get_next_event
* will return the event that was the second argument of this call.
*/
int
smf_seek_to_event(smf_t *smf, const smf_event_t *target)
{
smf_event_t *event;
smf_rewind(smf);
#if 0
g_debug("Seeking to event %d, track %d.", target->event_number, target->track->track_number);
#endif
for (;;) {
event = smf_peek_next_event(smf);
/* There can't be NULL here, unless "target" is not in this smf. */
assert(event);
if (event != target)
smf_skip_next_event(smf);
else
break;
}
smf->last_seek_position = event->time_seconds;
return (0);
}
/**
* Seeks the SMF to the given position. For example, after seeking to 10 pulses,
* smf_get_next_event will return first event that happens after the first ten pulses.
* \return 0 if everything went ok, nonzero otherwise.
*/
int
smf_seek_to_pulses(smf_t *smf, int pulses)
{
smf_event_t *event;
assert(pulses >= 0);
smf_rewind(smf);
#if 0
g_debug("Seeking to %d pulses.", pulses);
#endif
for (;;) {
event = smf_peek_next_event(smf);
if (event == NULL) {
g_critical("Trying to seek past the end of song.");
return (-1);
}
if (event->time_pulses < pulses)
smf_skip_next_event(smf);
else
break;
}
smf->last_seek_position = event->time_seconds;
return (0);
}
void
start_playing (gchar * callback)
{
smf_t *smf = Denemo.project->movement->smf;
if (callback && *callback)
callback_script = g_string_new (callback);
if (Denemo.project->movement->recorded_midi_track)
safely_add_track (Denemo.project->movement->smf, Denemo.project->movement->recorded_midi_track);
fix_start_end_ordering ();
smf_rewind (smf);
gdouble start = (Denemo.project->movement->start_time/get_playback_speed()) - SHAVING;
if(smf_seek_to_seconds (smf, (start>0.0)?start:0.0))
g_warning("smf_seek_to_seconds %f failed", start);
initialize_until_time ();
initialize_playhead ();
playing = TRUE;
last_draw_time = -1.0;//needed to trigger drawing first note
}
/**
* Loads SMF file.
*
* \param file Open file.
* \return SMF or NULL, if loading failed.
*/
smf_t *
smf_load(FILE *file)
{
size_t file_buffer_length;
void *file_buffer;
smf_t *smf;
if (load_file_into_buffer(&file_buffer, &file_buffer_length, file))
return (NULL);
smf = smf_load_from_memory(file_buffer, file_buffer_length);
memset(file_buffer, 0, file_buffer_length);
free(file_buffer);
if (smf == NULL)
return (NULL);
smf_rewind(smf);
return (smf);
}
/**
* Seeks the SMF to the given position. For example, after seeking to 1.0 seconds,
* smf_get_next_event will return first event that happens after the first second of song.
* \return 0 if everything went ok, nonzero otherwise.
*/
int
smf_seek_to_seconds(smf_t *smf, double seconds)
{
smf_event_t *event;
assert(seconds >= 0.0);
if (seconds == smf->last_seek_position) {
#if 0
g_debug("Avoiding seek to %f seconds.", seconds);
#endif
return (0);
}
smf_rewind(smf);
#if 0
g_debug("Seeking to %f seconds.", seconds);
#endif
for (;;) {
event = smf_peek_next_event(smf);
if (event == NULL) {
g_critical("Trying to seek past the end of song.");
return (-1);
}
if (event->time_seconds < seconds)
smf_skip_next_event(smf);
else
break;
}
smf->last_seek_position = seconds;
return (0);
}
gboolean
writer_timeout (gpointer file_name_gpointer)
{
int i;
char * file_name = (char *) file_name_gpointer;
/*
* XXX: It should be done like this:
* http://wwwtcs.inf.tu-dresden.de/~tews/Gtk/x2992.html
*/
if (ctrl_c_pressed == 0)
return TRUE;
jack_deactivate(jack_client);
smf_rewind(smf); /* Get rid of empty tracks. */
for (i = 0; i < 16; ++i)
{
if (tracks[i]->number_of_events == 0)
{
smf_remove_track(tracks[i]);
smf_track_delete(tracks[i]);
}
}
if (smf->number_of_tracks == 0)
{
g_message("No events recorded, not saving anything.");
exit(0);
}
if (smf_save(smf, file_name))
{
g_critical("Could not save file '%s', sorry.", file_name);
exit(-1);
}
g_message("File '%s' saved successfully.", file_name);
exit(0);
}