diff options
Diffstat (limited to 'drumgizmo/input/jackmidi/jackmidi.cc')
| -rw-r--r-- | drumgizmo/input/jackmidi/jackmidi.cc | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/drumgizmo/input/jackmidi/jackmidi.cc b/drumgizmo/input/jackmidi/jackmidi.cc new file mode 100644 index 0000000..f9faabd --- /dev/null +++ b/drumgizmo/input/jackmidi/jackmidi.cc @@ -0,0 +1,232 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * jackmidi.cc + * + * Sat Apr 30 21:11:54 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include <stdlib.h> + +#include <event.h> +#include <string> + +#include <stdio.h> + +#define NOTE_ON 0x90 + +#include "jackclient.h" + +#include <jack/midiport.h> + +class JackMidi : public JackProcess { +public: + JackMidi(); + ~JackMidi(); + + bool init(int instruments, char *inames[]); + + void setParm(std::string parm, std::string value); + + bool start(); + void stop(); + + void pre(); + event_t *run(size_t pos, size_t len, size_t *nevents); + void post(); + + void jack_process(jack_nframes_t nframes); + +private: + void loadMap(std::string map) {} + + JackClient *jackclient; + jack_port_t *midi_port; + + size_t pos; + + event_t *list; + size_t listsize; +}; + +JackMidi::JackMidi() +{ + jackclient = init_jack_client(); + jackclient->addJackProcess(this); + pos = 0; + + list = (event_t *)malloc(sizeof(event_t) * 1000); + listsize = 0; +} + +JackMidi::~JackMidi() +{ + jackclient->removeJackProcess(this); + close_jack_client(); +} + +bool JackMidi::init(int instruments, char *inames[]) +{ + midi_port = jack_port_register(jackclient->jack_client, + "drumgizmo_midiin", + JACK_DEFAULT_MIDI_TYPE, + JackPortIsInput,// | JackPortIsTerminal, + 0); + + return true; +} + +void JackMidi::setParm(std::string parm, std::string value) +{ + if(parm == "map") loadMap(value); +} + +bool JackMidi::start() +{ + jackclient->activate(); + return true; +} + +void JackMidi::stop() +{ +} + +void JackMidi::pre() +{ +} + +event_t *JackMidi::run(size_t pos, size_t len, size_t *nevents) +{ + *nevents = listsize; + event_t *l = list; + list = (event_t *)malloc(sizeof(event_t) * 1000); + listsize = 0; + return l; +} + +void JackMidi::jack_process(jack_nframes_t nframes) +{ + void *midibuffer = jack_port_get_buffer(midi_port, nframes); + + jack_nframes_t midievents = jack_midi_get_event_count(midibuffer); + + for(jack_nframes_t i = 0; i < midievents; i++) { + jack_midi_event_t event; + jack_midi_event_get(&event, midibuffer, i); + + if(event.size != 3) continue; + if((event.buffer[0] & NOTE_ON) != NOTE_ON) continue; + + int key = event.buffer[1]; + int velocity = event.buffer[2]; + + printf("Event key:%d vel:%d\n", key, velocity); + + if(velocity) { + list[listsize].type = TYPE_ONSET; + list[listsize].instrument = key; + list[listsize].velocity = velocity / 127.0; + list[listsize].offset = event.time; + listsize++; + } + } + + jack_midi_clear_buffer(midibuffer); + + pos += nframes; +} + + +void JackMidi::post() +{ +} + +extern "C" { + void *create() + { + return new JackMidi(); + } + + void destroy(void *h) + { + JackMidi *jackmidi = (JackMidi*)h; + delete jackmidi; + } + + bool init(void *h, int i, char *inames[]) + { + JackMidi *jackmidi = (JackMidi*)h; + return jackmidi->init(i, inames); + } + + void setparm(void *h, const char *parm, const char *value) + { + JackMidi *jackmidi = (JackMidi*)h; + jackmidi->setParm(parm, value); + } + + bool start(void *h) + { + JackMidi *jackmidi = (JackMidi*)h; + return jackmidi->start(); + } + + void stop(void *h) + { + JackMidi *jackmidi = (JackMidi*)h; + jackmidi->stop(); + } + + void pre(void *h) + { + JackMidi *jackmidi = (JackMidi*)h; + jackmidi->pre(); + } + + event_t *run(void *h, size_t pos, size_t len, size_t *nev) + { + JackMidi *jackmidi = (JackMidi*)h; + return jackmidi->run(pos, len, nev); + } + + void post(void *h) + { + JackMidi *jackmidi = (JackMidi*)h; + jackmidi->post(); + } +} + +#ifdef TEST_AUDIOINPUTENGINEJACKMIDI +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_AUDIOINPUTENGINEJACKMIDI*/ |