diff options
Diffstat (limited to 'drumgizmo/input/midifile.cc')
| -rw-r--r-- | drumgizmo/input/midifile.cc | 166 |
1 files changed, 94 insertions, 72 deletions
diff --git a/drumgizmo/input/midifile.cc b/drumgizmo/input/midifile.cc index c9aeaf8..0cc9dea 100644 --- a/drumgizmo/input/midifile.cc +++ b/drumgizmo/input/midifile.cc @@ -31,116 +31,131 @@ int const NOTE_ON = 0x90; MidifileInputEngine::MidifileInputEngine() - : smf{nullptr} - , current_event{nullptr} - , file{} - , midimap{} - , speed{1.f} - , track{-1} // all tracks - , loop{false} - , offset{0.0} { + : smf{nullptr}, current_event{nullptr}, file{}, midimap{}, speed{1.f}, + track{-1} // all tracks + , + loop{false}, offset{0.0} +{ } -MidifileInputEngine::~MidifileInputEngine() { - if (smf != nullptr) { +MidifileInputEngine::~MidifileInputEngine() +{ + if (smf != nullptr) + { smf_delete(smf); } } -bool MidifileInputEngine::isMidiEngine() { - return true; -} +bool MidifileInputEngine::isMidiEngine() { return true; } -bool MidifileInputEngine::init(Instruments& instruments) { - if (file == "") { +bool MidifileInputEngine::init(Instruments &instruments) +{ + if (file == "") + { std::cerr << "[MidifileInputEngine] Missing midi filename\n"; return false; } - if (midimap == "") { + if (midimap == "") + { std::cerr << "[MidifileInputEngine] Missing midimap filename\n"; return false; } smf = smf_load(file.c_str()); - if (smf == nullptr) { - std::cerr << "[MidifileInputEngine] Failed to load midifile '" - << file << "'\n"; + if (smf == nullptr) + { + std::cerr << "[MidifileInputEngine] Failed to load midifile '" << file + << "'\n"; return false; } MidiMapParser p{midimap}; - if (p.parse()) { - std::cerr << "[MidifileInputEngine] Failed to parse midimap '" - << midimap << "'\n"; + if (p.parse()) + { + std::cerr << "[MidifileInputEngine] Failed to parse midimap '" << midimap + << "'\n"; return false; } midi_mapper.midimap = p.midimap; - for (auto i = 0u; i < instruments.size(); ++i) { + for (auto i = 0u; i < instruments.size(); ++i) + { auto name = instruments[i]->name(); midi_mapper.instrmap[name] = i; } return true; } -void MidifileInputEngine::setParm(std::string parm, std::string value) { - if(parm == "file") { +void MidifileInputEngine::setParm(std::string parm, std::string value) +{ + if (parm == "file") + { // apply midi input filename file = value; - - } else if(parm == "speed") { + } + else if (parm == "speed") + { // try to apply speed - try { + try + { speed = std::stof(value); - } catch (...) { - std::cerr << "[MidifileInputEngine] Invalid speed " - << value << "\n"; } - } else if (parm == "midimap") { + catch (...) + { + std::cerr << "[MidifileInputEngine] Invalid speed " << value << "\n"; + } + } + else if (parm == "midimap") + { // apply midimap filename midimap = value; - - } else if (parm == "loop") { + } + else if (parm == "loop") + { // apply looping loop = true; - - } else { - std::cerr << "[MidifileInputEngine] Unsupported parameter '" - << parm << "'\n"; + } + else + { + std::cerr << "[MidifileInputEngine] Unsupported parameter '" << parm + << "'\n"; } } -bool MidifileInputEngine::start() { - return true; -} +bool MidifileInputEngine::start() { return true; } -void MidifileInputEngine::stop() { -} +void MidifileInputEngine::stop() {} -void MidifileInputEngine::pre() { -} +void MidifileInputEngine::pre() {} -event_t* MidifileInputEngine::run(size_t pos, size_t len, size_t *nevents) { - event_t* evs{nullptr}; +event_t *MidifileInputEngine::run(size_t pos, size_t len, size_t *nevents) +{ + event_t *evs{nullptr}; size_t num_events{0u}; - + double current_max_time = (1.0 + pos + len) / (44100.0 / speed); current_max_time -= offset; // double cur_min_time = (double)(pos) / (44100.0 / speed); - - if(!current_event) { + + if (!current_event) + { current_event = smf_get_next_event(smf); } - - while(current_event && current_event->time_seconds < current_max_time) { - if(!smf_event_is_metadata(current_event)) { - if( (current_event->midi_buffer_length == 3) && - ((current_event->midi_buffer[0] & NOTE_ON) == NOTE_ON) && - (track == -1 || current_event->track_number == track) && - current_event->midi_buffer[2] > 0) { - - if(evs == nullptr) { - printf("Owning raw pointer at drumgizmo/input/midifile.cc - GET RID OF THEM!\n"); + + while (current_event && current_event->time_seconds < current_max_time) + { + if (!smf_event_is_metadata(current_event)) + { + if ((current_event->midi_buffer_length == 3) && + ((current_event->midi_buffer[0] & NOTE_ON) == NOTE_ON) && + (track == -1 || current_event->track_number == track) && + current_event->midi_buffer[2] > 0) + { + + if (evs == nullptr) + { + printf("Owning raw pointer at drumgizmo/input/midifile.cc - GET RID " + "OF THEM!\n"); evs = (event_t *)malloc(sizeof(event_t) * 1000); } - + int key = current_event->midi_buffer[1]; int velocity = current_event->midi_buffer[2]; @@ -149,29 +164,37 @@ event_t* MidifileInputEngine::run(size_t pos, size_t len, size_t *nevents) { evs[num_events].offset = evpos - pos; int i = midi_mapper.lookup(key); - if(i != -1) { + if (i != -1) + { evs[num_events].instrument = i; evs[num_events].velocity = velocity / 127.0; - + ++num_events; - if(num_events > 999) { + if (num_events > 999) + { fprintf(stderr, "PANIC!\n"); break; } } } } - + current_event = smf_get_next_event(smf); } - if(!current_event) { - if(loop) { + if (!current_event) + { + if (loop) + { smf_rewind(smf); offset += current_max_time; - } else { - if(evs == nullptr) { - printf("Owning raw pointer at drumgizmo/input/midifile.cc - GET RID OF THEM!\n"); + } + else + { + if (evs == nullptr) + { + printf("Owning raw pointer at drumgizmo/input/midifile.cc - GET RID OF " + "THEM!\n"); evs = (event_t *)malloc(sizeof(event_t) * 1000); } evs[num_events].type = TYPE_STOP; @@ -183,5 +206,4 @@ event_t* MidifileInputEngine::run(size_t pos, size_t len, size_t *nevents) { return evs; } -void MidifileInputEngine::post() { -} +void MidifileInputEngine::post() {} |