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 jack_options_t options = JackNullOption;
94 jack_status_t *status = NULL;
95 if ((jack_setup->client = jack_client_open (client_name, options, status)) == 0) {
96 AUBIO_ERR ("jack server not running?\n");
97 AUBIO_QUIT (AUBIO_FAIL);
100 if (jack_setup->omidichan) {
101 jack_setup->midi_out_ring = jack_ringbuffer_create (RINGBUFFER_SIZE);
103 if (jack_setup->midi_out_ring == NULL) {
104 AUBIO_ERR ("Failed creating jack midi output ringbuffer.");
105 AUBIO_QUIT (AUBIO_FAIL);
108 jack_ringbuffer_mlock (jack_setup->midi_out_ring);
112 jack_set_process_callback (jack_setup->client, aubio_jack_process,
113 (void *) jack_setup);
114 jack_on_shutdown (jack_setup->client, aubio_jack_shutdown,
115 (void *) jack_setup);
117 /* register jack output audio and midi ports */
118 for (i = 0; i < ochan + omidichan; i++) {
120 jack_port_type = JACK_DEFAULT_AUDIO_TYPE;
121 AUBIO_SPRINTF (name, "out_%d", i + 1);
123 jack_port_type = JACK_DEFAULT_MIDI_TYPE;
124 AUBIO_SPRINTF (name, "midi_out_%d", i - ochan + 1);
126 if ((jack_setup->oports[i] =
127 jack_port_register (jack_setup->client, name,
128 jack_port_type, JackPortIsOutput, 0)) == 0) {
131 AUBIO_DBG ("%s:%s\n", client_name, name);
134 /* register jack input audio ports */
135 for (i = 0; i < ichan + imidichan; i++) {
137 jack_port_type = JACK_DEFAULT_AUDIO_TYPE;
138 AUBIO_SPRINTF (name, "in_%d", i + 1);
140 jack_port_type = JACK_DEFAULT_MIDI_TYPE;
141 AUBIO_SPRINTF (name, "midi_in_%d", i - ichan + 1);
143 if ((jack_setup->iports[i] =
144 jack_port_register (jack_setup->client, name,
145 jack_port_type, JackPortIsInput, 0)) == 0) {
148 AUBIO_DBG ("%s:%s\n", client_name, name);
151 /* set processing callback */
152 jack_setup->callback = callback;
156 AUBIO_ERR ("failed registering port \"%s:%s\"!\n", client_name, name);
157 jack_client_close (jack_setup->client);
158 AUBIO_QUIT (AUBIO_FAIL);
162 aubio_jack_activate (aubio_jack_t * jack_setup)
164 /* get sample rate */
165 jack_setup->samplerate = jack_get_sample_rate (jack_setup->client);
166 /* actual jack process activation */
167 if (jack_activate (jack_setup->client)) {
168 AUBIO_ERR ("jack client activation failed");
175 aubio_jack_close (aubio_jack_t * jack_setup)
177 /* bug : should disconnect all ports first */
178 jack_client_close (jack_setup->client);
179 aubio_jack_free (jack_setup);
182 /* memory management */
183 static aubio_jack_t *
184 aubio_jack_alloc (uint_t ichan, uint_t ochan,
185 uint_t imidichan, uint_t omidichan)
187 aubio_jack_t *jack_setup = AUBIO_NEW (aubio_jack_t);
188 jack_setup->ichan = ichan;
189 jack_setup->ochan = ochan;
190 jack_setup->imidichan = imidichan;
191 jack_setup->omidichan = omidichan;
192 jack_setup->oports = AUBIO_ARRAY (jack_port_t *, ichan + imidichan);
193 jack_setup->iports = AUBIO_ARRAY (jack_port_t *, ochan + omidichan);
194 jack_setup->ibufs = AUBIO_ARRAY (jack_sample_t *, ichan);
195 jack_setup->obufs = AUBIO_ARRAY (jack_sample_t *, ochan);
196 #ifdef AUBIO_JACK_NEEDS_CONVERSION
197 /* allocate arrays for data conversion */
198 jack_setup->sibufs = AUBIO_ARRAY (smpl_t *, ichan);
200 for (i = 0; i < ichan; i++) {
201 jack_setup->sibufs[i] = AUBIO_ARRAY (smpl_t, AUBIO_JACK_MAX_FRAMES);
203 jack_setup->sobufs = AUBIO_ARRAY (smpl_t *, ochan);
204 for (i = 0; i < ochan; i++) {
205 jack_setup->sobufs[i] = AUBIO_ARRAY (smpl_t, AUBIO_JACK_MAX_FRAMES);
212 aubio_jack_free (aubio_jack_t * jack_setup)
214 if (jack_setup->omidichan && jack_setup->midi_out_ring) {
215 jack_ringbuffer_free (jack_setup->midi_out_ring);
217 AUBIO_FREE (jack_setup->oports);
218 AUBIO_FREE (jack_setup->iports);
219 AUBIO_FREE (jack_setup->ibufs);
220 AUBIO_FREE (jack_setup->obufs);
221 AUBIO_FREE (jack_setup);
225 /* jack callback functions */
227 aubio_jack_shutdown (void *arg UNUSED)
229 AUBIO_ERR ("jack shutdown\n");
230 AUBIO_QUIT (AUBIO_OK);
233 static void process_midi_output (aubio_jack_t * dev, jack_nframes_t nframes);
236 aubio_jack_process (jack_nframes_t nframes, void *arg)
238 aubio_jack_t *dev = (aubio_jack_t *) arg;
240 for (i = 0; i < dev->ichan; i++) {
241 /* get readable input */
243 (jack_sample_t *) jack_port_get_buffer (dev->iports[i], nframes);
245 for (i = 0; i < dev->ochan; i++) {
246 /* get writable output */
248 (jack_sample_t *) jack_port_get_buffer (dev->oports[i], nframes);
250 #ifndef AUBIO_JACK_NEEDS_CONVERSION
251 dev->callback (dev->ibufs, dev->obufs, nframes);
254 for (j = 0; j < MIN (nframes, AUBIO_JACK_MAX_FRAMES); j++) {
255 for (i = 0; i < dev->ichan; i++) {
256 dev->sibufs[i][j] = (smpl_t) dev->ibufs[i][j];
259 dev->callback (dev->sibufs, dev->sobufs, nframes);
260 for (j = 0; j < MIN (nframes, AUBIO_JACK_MAX_FRAMES); j++) {
261 for (i = 0; i < dev->ochan; i++) {
262 dev->obufs[i][j] = (jack_sample_t) dev->sobufs[i][j];
267 /* now process midi stuff */
268 if (dev->omidichan) {
269 process_midi_output (dev, nframes);
276 aubio_jack_midi_event_write (aubio_jack_t * dev, jack_midi_event_t * event)
280 if (jack_ringbuffer_write_space (dev->midi_out_ring) < sizeof (*event)) {
281 AUBIO_ERR ("Not enough space to write midi output, midi event lost!\n");
285 written = jack_ringbuffer_write (dev->midi_out_ring,
286 (char *) event, sizeof (*event));
288 if (written != sizeof (*event)) {
289 AUBIO_WRN ("Call to jack_ringbuffer_write failed, midi event lost! \n");
294 process_midi_output (aubio_jack_t * dev, jack_nframes_t nframes)
297 jack_midi_event_t ev;
298 unsigned char *buffer;
299 jack_nframes_t last_frame_time = jack_last_frame_time (dev->client);
300 // TODO for each omidichan
301 void *port_buffer = jack_port_get_buffer (dev->oports[dev->ochan], nframes);
303 if (port_buffer == NULL) {
304 AUBIO_WRN ("Failed to get jack midi output port, will not send anything\n");
308 jack_midi_clear_buffer (port_buffer);
310 // TODO add rate_limit
312 while (jack_ringbuffer_read_space (dev->midi_out_ring)) {
313 read = jack_ringbuffer_peek (dev->midi_out_ring, (char *) &ev, sizeof (ev));
315 if (read != sizeof (ev)) {
316 AUBIO_WRN ("Short read from the ringbuffer, possible note loss.\n");
317 jack_ringbuffer_read_advance (dev->midi_out_ring, read);
321 sendtime = ev.time + nframes - last_frame_time;
323 /* send time is after current period, will do this one later */
324 if (sendtime >= (int) nframes) {
332 jack_ringbuffer_read_advance (dev->midi_out_ring, sizeof (ev));
334 buffer = jack_midi_event_reserve (port_buffer, sendtime, ev.size);
336 if (buffer == NULL) {
337 AUBIO_WRN ("Call to jack_midi_event_reserve failed, note lost.\n");
341 AUBIO_MEMCPY (buffer, ev.buffer, ev.size);
345 #endif /* HAVE_JACK */