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-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/***************************************************************************
- * jackclient.cc
- *
- * Sun Jul 20 21:48:44 CEST 2008
- * Copyright 2008 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 "jackclient.h"
-
-extern "C"
-{
- void _wrap_jack_shutdown(void *arg){
- ((JackClient*)arg)->shutdown();}
- int _wrap_jack_process(jack_nframes_t nframes, void *arg){
- return ((JackClient*)arg)->process(nframes);}
- void _wrap_jack_thread_init(void *arg){
- ((JackClient*)arg)->thread_init();}
- void _wrap_jack_freewheel_mode(int freewheel_mode, void *arg){
- ((JackClient*)arg)->freewheel_mode(freewheel_mode);}
- int _wrap_jack_buffer_size(jack_nframes_t nframes, void *arg){
- return ((JackClient*)arg)->buffer_size(nframes);}
- int _wrap_jack_sample_rate(jack_nframes_t nframes, void *arg){
- return ((JackClient*)arg)->sample_rate(nframes);}
- void _wrap_jack_port_registration(jack_port_id_t port, int i, void *arg){
- ((JackClient*)arg)->port_registration(port, i);}
- int _wrap_jack_graph_order(void *arg){
- return ((JackClient*)arg)->graph_order();}
- int _wrap_jack_xrun(void *arg){
- return ((JackClient*)arg)->xrun();}
-} // extern "C"
-
-JackClient::JackClient(DrumKit *drumkit)
- : midimapper(drumkit)
-{
- this->drumkit = drumkit;
-
- jack_status_t status;
-
- jack_client = jack_client_open("DrumGizmo", JackNullOption, &status);
-
- // Setup input port
- midi_port = jack_port_register(jack_client,
- "midi_in",
- JACK_DEFAULT_MIDI_TYPE,
- JackPortIsInput,// | JackPortIsTerminal,
- 0);
-
- // Setup input ports
- Instruments::iterator ii = drumkit->instruments.begin();
- while(ii != drumkit->instruments.end()) {
- Instrument *instrument = ii->second;
- instrument->port = jack_port_register(jack_client,
- instrument->name.c_str(),
- JACK_DEFAULT_AUDIO_TYPE,
- JackPortIsInput | JackPortIsTerminal,
- 0);
-
- BeatMapper *beatmapper = new BeatMapper(instrument);
- beatmappers.push_back(beatmapper);
-
- // input_ports.push_back(instrument->port);
- ii++;
- }
-
- // Setup output ports
- Channels::iterator ci = drumkit->channels.begin();
- while(ci != drumkit->channels.end()) {
- Channel *channel = ci->second;
- channel->port = jack_port_register(jack_client,
- channel->name.c_str(),
- JACK_DEFAULT_AUDIO_TYPE,
- JackPortIsOutput | JackPortIsTerminal,
- 0);
- output_ports.push_back(channel->port);
- ci++;
- }
-
- //jack_on_shutdown(jack_client, _wrap_jack_shutdown, this);
- jack_set_process_callback(jack_client, _wrap_jack_process, this);
- //jack_set_thread_init_callback(jack_client, _wrap_jack_thread_init, this);
- //jack_set_freewheel_callback(jack_client, _wrap_jack_freewheel_mode, this);
- //jack_set_buffer_size_callback(jack_client, _wrap_jack_buffer_size, this);
- //jack_set_sample_rate_callback(jack_client, _wrap_jack_sample_rate, this);
- //jack_set_port_registration_callback(jack_client, _wrap_jack_port_registration, this);
- //jack_set_graph_order_callback(jack_client, _wrap_jack_graph_order, this);
- //jack_set_xrun_callback(jack_client, _wrap_jack_xrun, this);
-}
-
-JackClient::~JackClient()
-{
- jack_client_close(jack_client);
-}
-
-void JackClient::activate()
-{
- jack_activate(jack_client);
-}
-
-void JackClient::shutdown()
-{
-}
-
-int JackClient::process(jack_nframes_t nframes)
-{
- //
- // Look for midi input
- //
- 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 midi_event;
- jack_midi_event_get(&midi_event, midibuffer, i);
-
- Sample *sample = midimapper.map(midi_event);
- if(!sample) continue;
-
- AudioFiles::iterator ai = sample->audiofiles.begin();
- while(ai != sample->audiofiles.end()) {
- AudioFile *audiofile = ai->second;
- audiofile->load();
-
- if(drumkit->channels.find(audiofile->channel) != drumkit->channels.end()) {
- Channel *channel = drumkit->channels[audiofile->channel];
- Event event(channel->port, audiofile, midi_event.time);
- events.insert(event);
- }
- ai++;
- }
-
- }
- jack_midi_clear_buffer(midibuffer);
-
- //
- // Look for audio trigger input
- //
- // std::vector< BeatMapper >::iterator bi = beatmappers.begin();
- // while(bi != beatmappers.end()) {
- for(size_t bi = 0; bi < beatmappers.size(); bi++) {
- BeatMapper *beatmapper = beatmappers[bi];//*bi;
-
- Sample *sample = beatmapper->map(nframes);
- if(!sample) continue;
-
- AudioFiles::iterator ai = sample->audiofiles.begin();
- while(ai != sample->audiofiles.end()) {
- AudioFile *audiofile = ai->second;
- audiofile->load();
-
- if(drumkit->channels.find(audiofile->channel) != drumkit->channels.end()) {
- Channel *channel = drumkit->channels[audiofile->channel];
- Event event(channel->port, audiofile, 0);
- events.insert(event);
- }
- ai++;
- }
-
- //bi++;
- }
-
- //
- // Reset ports
- //
- Ports::iterator pi = output_ports.begin();
- while(pi != output_ports.end()) {
-
- jack_default_audio_sample_t *buffer;
- buffer = (jack_default_audio_sample_t *)jack_port_get_buffer(*pi, nframes);
-
- for(size_t j = 0; j < nframes; j++) {
- buffer[j] = 0;
- }
-
- pi++;
- }
-
- Events nextevents;
-
- //
- // Handle events
- //
- Events::iterator ei = events.begin();
- while(ei != events.end()) {
-
- Event event = *ei;
-
- jack_default_audio_sample_t *buffer;
- buffer = (jack_default_audio_sample_t *)jack_port_get_buffer(event.port, nframes);
-
- size_t dtime = nframes - event.time; // how much buffer is left?
- size_t size = event.sample->size - event.duration; // how much audio is left?
- if(size > dtime) size = dtime;
-
- for(size_t j = event.time; j < event.time + size; j++) {
- buffer[j] += event.sample->data[event.duration + j - event.time];
- }
-
- if(event.duration + size < event.sample->size) {
- Event e(event.port, event.sample, 0, event.duration + size);
- nextevents.insert(e);
- }
-
- ei++;
- }
-
- // Remove all dead events
- events = nextevents;
-
- return 0;
-}
-
-void JackClient::thread_init()
-{
-}
-
-void JackClient::freewheel_mode(int freewheel_mode)
-{
-}
-
-int JackClient::buffer_size(jack_nframes_t nframes)
-{
- return 0;
-}
-
-int JackClient::sample_rate(jack_nframes_t nframes)
-{
- return 0;
-}
-
-void JackClient::port_registration(jack_port_id_t port, int i)
-{
-}
-
-int JackClient::graph_order()
-{
- return 0;
-}
-
-int JackClient::xrun()
-{
- return 0;
-}
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