2 Copyright (C) 2003-2009 Paul Brossier <piem@aubio.org>
4 This file is part of aubio.
6 aubio is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 aubio is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with aubio. If not, see <http://www.gnu.org/licenses/>.
25 #include "aubio_priv.h"
28 typedef jack_default_audio_sample_t jack_sample_t;
31 #define AUBIO_JACK_MAX_FRAMES 4096
32 #define AUBIO_JACK_NEEDS_CONVERSION
35 #define RINGBUFFER_SIZE 1024*sizeof(jack_midi_event_t)
38 * jack device structure
43 jack_client_t *client;
44 /** jack output ports */
46 /** jack input ports */
48 /** jack input buffer */
49 jack_sample_t **ibufs;
50 /** jack output buffer */
51 jack_sample_t **obufs;
52 #ifdef AUBIO_JACK_NEEDS_CONVERSION
53 /** converted jack input buffer */
55 /** converted jack output buffer */
58 /** jack input audio channels */
60 /** jack output audio channels */
62 /** jack input midi channels */
64 /** jack output midi channels */
66 /** midi output ringbuffer */
67 jack_ringbuffer_t *midi_out_ring;
68 /** jack samplerate (Hz) */
70 /** jack processing function */
71 aubio_process_func_t callback;
74 /* static memory management */
75 static aubio_jack_t *aubio_jack_alloc (uint_t ichan, uint_t ochan,
76 uint_t imidichan, uint_t omidichan);
77 static uint_t aubio_jack_free (aubio_jack_t * jack_setup);
78 /* jack callback functions */
79 static int aubio_jack_process (jack_nframes_t nframes, void *arg);
80 static void aubio_jack_shutdown (void *arg);
83 new_aubio_jack (uint_t ichan, uint_t ochan,
84 uint_t imidichan, uint_t omidichan, aubio_process_func_t callback)
86 aubio_jack_t *jack_setup = aubio_jack_alloc (ichan, ochan,
87 imidichan, omidichan);
89 char *client_name = "aubio";
92 /* initial jack client setup */
93 if ((jack_setup->client = jack_client_new (client_name)) == 0) {
94 AUBIO_ERR ("jack server not running?\n");
95 AUBIO_QUIT (AUBIO_FAIL);
98 if (jack_setup->omidichan) {
99 jack_setup->midi_out_ring = jack_ringbuffer_create (RINGBUFFER_SIZE);
101 if (jack_setup->midi_out_ring == NULL) {
102 AUBIO_ERR ("Failed creating jack midi output ringbuffer.");
103 AUBIO_QUIT (AUBIO_FAIL);
106 jack_ringbuffer_mlock (jack_setup->midi_out_ring);
110 jack_set_process_callback (jack_setup->client, aubio_jack_process,
111 (void *) jack_setup);
112 jack_on_shutdown (jack_setup->client, aubio_jack_shutdown,
113 (void *) jack_setup);
115 /* register jack output audio and midi ports */
116 for (i = 0; i < ochan + omidichan; i++) {
118 jack_port_type = JACK_DEFAULT_AUDIO_TYPE;
119 AUBIO_SPRINTF (name, "out_%d", i + 1);
121 jack_port_type = JACK_DEFAULT_MIDI_TYPE;
122 AUBIO_SPRINTF (name, "midi_out_%d", i - ochan + 1);
124 if ((jack_setup->oports[i] =
125 jack_port_register (jack_setup->client, name,
126 jack_port_type, JackPortIsOutput, 0)) == 0) {
129 AUBIO_DBG ("%s:%s\n", client_name, name);
132 /* register jack input audio ports */
133 for (i = 0; i < ichan + imidichan; i++) {
135 jack_port_type = JACK_DEFAULT_AUDIO_TYPE;
136 AUBIO_SPRINTF (name, "in_%d", i + 1);
138 jack_port_type = JACK_DEFAULT_MIDI_TYPE;
139 AUBIO_SPRINTF (name, "midi_in_%d", i - ichan + 1);
141 if ((jack_setup->iports[i] =
142 jack_port_register (jack_setup->client, name,
143 jack_port_type, JackPortIsInput, 0)) == 0) {
146 AUBIO_DBG ("%s:%s\n", client_name, name);
149 /* set processing callback */
150 jack_setup->callback = callback;
154 AUBIO_ERR ("failed registering port \"%s:%s\"!\n", client_name, name);
155 jack_client_close (jack_setup->client);
156 AUBIO_QUIT (AUBIO_FAIL);
160 aubio_jack_activate (aubio_jack_t * jack_setup)
162 /* get sample rate */
163 jack_setup->samplerate = jack_get_sample_rate (jack_setup->client);
164 /* actual jack process activation */
165 if (jack_activate (jack_setup->client)) {
166 AUBIO_ERR ("jack client activation failed");
173 aubio_jack_close (aubio_jack_t * jack_setup)
175 /* bug : should disconnect all ports first */
176 jack_client_close (jack_setup->client);
177 aubio_jack_free (jack_setup);
180 /* memory management */
181 static aubio_jack_t *
182 aubio_jack_alloc (uint_t ichan, uint_t ochan,
183 uint_t imidichan, uint_t omidichan)
185 aubio_jack_t *jack_setup = AUBIO_NEW (aubio_jack_t);
186 jack_setup->ichan = ichan;
187 jack_setup->ochan = ochan;
188 jack_setup->imidichan = imidichan;
189 jack_setup->omidichan = omidichan;
190 jack_setup->oports = AUBIO_ARRAY (jack_port_t *, ichan + imidichan);
191 jack_setup->iports = AUBIO_ARRAY (jack_port_t *, ochan + omidichan);
192 jack_setup->ibufs = AUBIO_ARRAY (jack_sample_t *, ichan);
193 jack_setup->obufs = AUBIO_ARRAY (jack_sample_t *, ochan);
194 #ifdef AUBIO_JACK_NEEDS_CONVERSION
195 /* allocate arrays for data conversion */
196 jack_setup->sibufs = AUBIO_ARRAY (smpl_t *, ichan);
198 for (i = 0; i < ichan; i++) {
199 jack_setup->sibufs[i] = AUBIO_ARRAY (smpl_t, AUBIO_JACK_MAX_FRAMES);
201 jack_setup->sobufs = AUBIO_ARRAY (smpl_t *, ochan);
202 for (i = 0; i < ochan; i++) {
203 jack_setup->sobufs[i] = AUBIO_ARRAY (smpl_t, AUBIO_JACK_MAX_FRAMES);
210 aubio_jack_free (aubio_jack_t * jack_setup)
212 if (jack_setup->omidichan && jack_setup->midi_out_ring) {
213 jack_ringbuffer_free (jack_setup->midi_out_ring);
215 AUBIO_FREE (jack_setup->oports);
216 AUBIO_FREE (jack_setup->iports);
217 AUBIO_FREE (jack_setup->ibufs);
218 AUBIO_FREE (jack_setup->obufs);
219 AUBIO_FREE (jack_setup);
223 /* jack callback functions */
225 aubio_jack_shutdown (void *arg UNUSED)
227 AUBIO_ERR ("jack shutdown\n");
228 AUBIO_QUIT (AUBIO_OK);
231 static void process_midi_output (aubio_jack_t * dev, jack_nframes_t nframes);
234 aubio_jack_process (jack_nframes_t nframes, void *arg)
236 aubio_jack_t *dev = (aubio_jack_t *) arg;
238 for (i = 0; i < dev->ichan; i++) {
239 /* get readable input */
241 (jack_sample_t *) jack_port_get_buffer (dev->iports[i], nframes);
243 for (i = 0; i < dev->ochan; i++) {
244 /* get writable output */
246 (jack_sample_t *) jack_port_get_buffer (dev->oports[i], nframes);
248 #ifndef AUBIO_JACK_NEEDS_CONVERSION
249 dev->callback (dev->ibufs, dev->obufs, nframes);
252 for (j = 0; j < MIN (nframes, AUBIO_JACK_MAX_FRAMES); j++) {
253 for (i = 0; i < dev->ichan; i++) {
254 dev->sibufs[i][j] = (smpl_t) dev->ibufs[i][j];
257 dev->callback (dev->sibufs, dev->sobufs, nframes);
258 for (j = 0; j < MIN (nframes, AUBIO_JACK_MAX_FRAMES); j++) {
259 for (i = 0; i < dev->ochan; i++) {
260 dev->obufs[i][j] = (jack_sample_t) dev->sobufs[i][j];
265 /* now process midi stuff */
266 if (dev->omidichan) {
267 process_midi_output (dev, nframes);
274 aubio_jack_midi_event_write (aubio_jack_t * dev, jack_midi_event_t * event)
278 if (jack_ringbuffer_write_space (dev->midi_out_ring) < sizeof (*event)) {
279 AUBIO_ERR ("Not enough space to write midi output, midi event lost!\n");
283 written = jack_ringbuffer_write (dev->midi_out_ring,
284 (char *) event, sizeof (*event));
286 if (written != sizeof (*event)) {
287 AUBIO_WRN ("Call to jack_ringbuffer_write failed, midi event lost! \n");
292 process_midi_output (aubio_jack_t * dev, jack_nframes_t nframes)
295 jack_midi_event_t ev;
296 unsigned char *buffer;
297 jack_nframes_t last_frame_time = jack_last_frame_time (dev->client);
298 // TODO for each omidichan
299 void *port_buffer = jack_port_get_buffer (dev->oports[dev->ochan], nframes);
301 if (port_buffer == NULL) {
302 AUBIO_WRN ("Failed to get jack midi output port, will not send anything\n");
306 jack_midi_clear_buffer (port_buffer);
308 // TODO add rate_limit
310 while (jack_ringbuffer_read_space (dev->midi_out_ring)) {
311 read = jack_ringbuffer_peek (dev->midi_out_ring, (char *) &ev, sizeof (ev));
313 if (read != sizeof (ev)) {
314 AUBIO_WRN ("Short read from the ringbuffer, possible note loss.\n");
315 jack_ringbuffer_read_advance (dev->midi_out_ring, read);
319 sendtime = ev.time + nframes - last_frame_time;
321 /* send time is after current period, will do this one later */
322 if (sendtime >= (int) nframes) {
330 jack_ringbuffer_read_advance (dev->midi_out_ring, sizeof (ev));
332 buffer = jack_midi_event_reserve (port_buffer, sendtime, ev.size);
334 if (buffer == NULL) {
335 AUBIO_WRN ("Call to jack_midi_event_reserve failed, note lost.\n");
339 AUBIO_MEMCPY (buffer, ev.buffer, ev.size);
343 #endif /* HAVE_JACK */