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authorBent Bisballe Nyeng <deva@aasimon.org>2013-05-20 10:07:22 +0200
committerBent Bisballe Nyeng <deva@aasimon.org>2013-05-20 10:07:22 +0200
commit34055bba9658c3961b69bd6d668390faa227b047 (patch)
tree5b0dfa131075e83084af759e7eada34a58d972bd /drumgizmo/input
parenta609e6895a96db134697acce266e0cb94488f60b (diff)
Add parameter error reporting. Added loop parameter, added omni track support (track=-1, default).
Diffstat (limited to 'drumgizmo/input')
-rw-r--r--drumgizmo/input/midifile/midifile.cc52
1 files changed, 39 insertions, 13 deletions
diff --git a/drumgizmo/input/midifile/midifile.cc b/drumgizmo/input/midifile/midifile.cc
index b2c9ba5..d73d382 100644
--- a/drumgizmo/input/midifile/midifile.cc
+++ b/drumgizmo/input/midifile/midifile.cc
@@ -63,6 +63,8 @@ private:
float speed;
int track;
std::string midimapfile;
+ bool loop;
+ double offset;
};
MidiFile::MidiFile()
@@ -70,17 +72,36 @@ MidiFile::MidiFile()
cur_event = NULL;
smf = NULL;
- filename = "";
speed = 1.0;
- track = 0;
+ track = -1; // -1 is OMNI/all tracks
+ loop = false;
+ offset = 0;
}
bool MidiFile::init(int instruments, char *inames[])
{
+ if(filename == "") {
+ fprintf(stderr, "Missing midifile argument 'file'\n");
+ return false;
+ }
+
+ if(midimapfile == "") {
+ fprintf(stderr, "Missing midimapfile argument 'midimap'.\n");
+ return false;
+ }
+
smf = smf_load(filename.c_str());
+ if(!smf) {
+ fprintf(stderr, "Could not open midifile '%s'.\n", filename.c_str());
+ return false;
+ }
+
MidiMapParser p(midimapfile);
- if(p.parse()) return false;
+ if(p.parse()) {
+ fprintf(stderr, "Could not parse midimapfile '%s'.\n", midimapfile.c_str());
+ return false;
+ }
mmap.midimap = p.midimap;
for(int i = 0; i < instruments; i++) {
@@ -96,6 +117,7 @@ void MidiFile::setParm(std::string parm, std::string value)
if(parm == "speed") speed = atof(value.c_str());
if(parm == "track") track = atoi(value.c_str());
if(parm == "midimap") midimapfile = value;
+ if(parm == "loop") loop = true;
}
bool MidiFile::start()
@@ -117,6 +139,7 @@ event_t *MidiFile::run(size_t pos, size_t len, size_t *nevents)
size_t nevs = 0;
double cur_max_time = (double)(pos + len) / (44100.0 / speed);
+ cur_max_time -= offset;
// double cur_min_time = (double)(pos) / (44100.0 / speed);
if(!cur_event) cur_event = smf_get_next_event(smf);
@@ -125,7 +148,8 @@ event_t *MidiFile::run(size_t pos, size_t len, size_t *nevents)
if(!smf_event_is_metadata(cur_event)) {
if( (cur_event->midi_buffer_length == 3) &&
((cur_event->midi_buffer[0] & NOTE_ON) == NOTE_ON) &&
- cur_event->track_number == track && cur_event->midi_buffer[2] > 0) {
+ (track == -1 || cur_event->track_number == track) &&
+ cur_event->midi_buffer[2] > 0) {
if(evs == NULL) evs = (event_t *)malloc(sizeof(event_t) * 1000);
@@ -135,10 +159,7 @@ event_t *MidiFile::run(size_t pos, size_t len, size_t *nevents)
evs[nevs].type = TYPE_ONSET;
size_t evpos = cur_event->time_seconds * (44100.0 / speed);
evs[nevs].offset = evpos - pos;
- /*
- printf("evpos: %d, sec: %f, pos: %d, len: %d, max_time: %f\n",
- evpos, cur_event->time_seconds, pos, len, cur_max_time);
- */
+
int i = mmap.lookup(key);
if(i != -1) {
evs[nevs].instrument = i;
@@ -146,7 +167,7 @@ event_t *MidiFile::run(size_t pos, size_t len, size_t *nevents)
nevs++;
if(nevs > 999) {
- printf("PANIC!\n");
+ fprintf(stderr, "PANIC!\n");
break;
}
}
@@ -157,10 +178,15 @@ event_t *MidiFile::run(size_t pos, size_t len, size_t *nevents)
}
if(!cur_event) {
- if(evs == NULL) evs = (event_t *)malloc(sizeof(event_t) * 1000);
- evs[nevs].type = TYPE_STOP;
- evs[nevs].offset = len - 1;
- nevs++;
+ if(loop) {
+ smf_rewind(smf);
+ offset += cur_max_time;
+ } else {
+ if(evs == NULL) evs = (event_t *)malloc(sizeof(event_t) * 1000);
+ evs[nevs].type = TYPE_STOP;
+ evs[nevs].offset = len - 1;
+ nevs++;
+ }
}
*nevents = nevs;