4 This file is part of polypaudio.
6 polypaudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 polypaudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
26 #include <sys/soundcard.h>
27 #include <sys/ioctl.h>
38 #include <polypcore/iochannel.h>
39 #include <polypcore/sink.h>
40 #include <polypcore/source.h>
41 #include <polypcore/module.h>
42 #include <polypcore/sample-util.h>
43 #include <polypcore/util.h>
44 #include <polypcore/modargs.h>
45 #include <polypcore/xmalloc.h>
46 #include <polypcore/log.h>
49 #include "module-oss-symdef.h"
51 PA_MODULE_AUTHOR("Lennart Poettering")
52 PA_MODULE_DESCRIPTION("OSS Sink/Source")
53 PA_MODULE_VERSION(PACKAGE_VERSION)
55 "sink_name=<name for the sink> "
56 "source_name=<name for the source> "
57 "device=<OSS device> "
58 "record=<enable source?> "
59 "playback=<enable sink?> "
60 "format=<sample format> "
61 "channels=<number of channels> "
63 "fragments=<number of fragments> "
64 "fragment_size=<fragment size> "
65 "channel_map=<channel map>")
73 pa_memchunk memchunk, silence;
75 uint32_t in_fragment_size, out_fragment_size, sample_size;
76 int use_getospace, use_getispace;
82 static const char* const valid_modargs[] = {
97 #define DEFAULT_SINK_NAME "oss_output"
98 #define DEFAULT_SOURCE_NAME "oss_input"
99 #define DEFAULT_DEVICE "/dev/dsp"
100 #define DEFAULT_NFRAGS 12
101 #define DEFAULT_FRAGSIZE 1024
103 static void update_usage(struct userdata *u) {
104 pa_module_set_used(u->module,
105 (u->sink ? pa_idxset_size(u->sink->inputs) : 0) +
106 (u->sink ? pa_idxset_size(u->sink->monitor_source->outputs) : 0) +
107 (u->source ? pa_idxset_size(u->source->outputs) : 0));
110 static void do_write(struct userdata *u) {
111 pa_memchunk *memchunk;
118 if (!u->sink || !pa_iochannel_is_writable(u->io))
123 l = u->out_fragment_size;
125 if (u->use_getospace) {
128 if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0)
129 u->use_getospace = 0;
131 if (info.bytes/l > 0) {
132 l = (info.bytes/l)*l;
139 memchunk = &u->memchunk;
141 if (!memchunk->length)
142 if (pa_sink_render(u->sink, l, memchunk) < 0)
143 memchunk = &u->silence;
145 assert(memchunk->memblock);
146 assert(memchunk->memblock->data);
147 assert(memchunk->length);
149 if ((r = pa_iochannel_write(u->io, (uint8_t*) memchunk->memblock->data + memchunk->index, memchunk->length)) < 0) {
150 pa_log(__FILE__": write() failed: %s", strerror(errno));
154 if (memchunk == &u->silence)
155 assert(r % u->sample_size == 0);
157 u->memchunk.index += r;
158 u->memchunk.length -= r;
160 if (u->memchunk.length <= 0) {
161 pa_memblock_unref(u->memchunk.memblock);
162 u->memchunk.memblock = NULL;
166 l = l > (size_t) r ? l - r : 0;
167 } while (loop && l > 0);
170 static void do_read(struct userdata *u) {
171 pa_memchunk memchunk;
177 if (!u->source || !pa_iochannel_is_readable(u->io) || !pa_idxset_size(u->source->outputs))
182 l = u->in_fragment_size;
184 if (u->use_getispace) {
187 if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0)
188 u->use_getispace = 0;
190 if (info.bytes/l > 0) {
191 l = (info.bytes/l)*l;
198 memchunk.memblock = pa_memblock_new(l, u->core->memblock_stat);
199 assert(memchunk.memblock);
200 if ((r = pa_iochannel_read(u->io, memchunk.memblock->data, memchunk.memblock->length)) < 0) {
201 pa_memblock_unref(memchunk.memblock);
203 pa_log(__FILE__": read() failed: %s", strerror(errno));
207 assert(r <= (ssize_t) memchunk.memblock->length);
208 memchunk.length = memchunk.memblock->length = r;
211 pa_source_post(u->source, &memchunk);
212 pa_memblock_unref(memchunk.memblock);
214 l = l > (size_t) r ? l - r : 0;
215 } while (loop && l > 0);
218 static void io_callback(PA_GCC_UNUSED pa_iochannel *io, void*userdata) {
219 struct userdata *u = userdata;
225 static void source_notify_cb(pa_source *s) {
226 struct userdata *u = s->userdata;
231 static pa_usec_t sink_get_latency_cb(pa_sink *s) {
234 struct userdata *u = s->userdata;
235 assert(s && u && u->sink);
237 if (ioctl(u->fd, SNDCTL_DSP_GETODELAY, &arg) < 0) {
238 pa_log_info(__FILE__": device doesn't support SNDCTL_DSP_GETODELAY: %s", strerror(errno));
239 s->get_latency = NULL;
243 r += pa_bytes_to_usec(arg, &s->sample_spec);
245 if (u->memchunk.memblock)
246 r += pa_bytes_to_usec(u->memchunk.length, &s->sample_spec);
251 static pa_usec_t source_get_latency_cb(pa_source *s) {
252 struct userdata *u = s->userdata;
254 assert(s && u && u->source);
256 if (!u->use_getispace)
259 if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
260 u->use_getispace = 0;
267 return pa_bytes_to_usec(info.bytes, &s->sample_spec);
270 static int sink_get_hw_volume(pa_sink *s) {
271 struct userdata *u = s->userdata;
273 if (pa_oss_get_pcm_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) {
274 pa_log_info(__FILE__": device doesn't support reading mixer settings: %s", strerror(errno));
275 s->get_hw_volume = NULL;
282 static int sink_set_hw_volume(pa_sink *s) {
283 struct userdata *u = s->userdata;
285 if (pa_oss_set_pcm_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) {
286 pa_log_info(__FILE__": device doesn't support writing mixer settings: %s", strerror(errno));
287 s->set_hw_volume = NULL;
294 static int source_get_hw_volume(pa_source *s) {
295 struct userdata *u = s->userdata;
297 if (pa_oss_get_input_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) {
298 pa_log_info(__FILE__": device doesn't support reading mixer settings: %s", strerror(errno));
299 s->get_hw_volume = NULL;
306 static int source_set_hw_volume(pa_source *s) {
307 struct userdata *u = s->userdata;
309 if (pa_oss_set_input_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) {
310 pa_log_info(__FILE__": device doesn't support writing mixer settings: %s", strerror(errno));
311 s->set_hw_volume = NULL;
318 int pa__init(pa_core *c, pa_module*m) {
319 struct audio_buf_info info;
320 struct userdata *u = NULL;
323 int nfrags, frag_size, in_frag_size, out_frag_size;
325 int record = 1, playback = 1;
328 pa_modargs *ma = NULL;
334 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
335 pa_log(__FILE__": failed to parse module arguments.");
339 if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
340 pa_log(__FILE__": record= and playback= expect numeric argument.");
344 if (!playback && !record) {
345 pa_log(__FILE__": neither playback nor record enabled for device.");
349 mode = (playback&&record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0));
351 nfrags = DEFAULT_NFRAGS;
352 frag_size = DEFAULT_FRAGSIZE;
353 if (pa_modargs_get_value_s32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_s32(ma, "fragment_size", &frag_size) < 0) {
354 pa_log(__FILE__": failed to parse fragments arguments");
358 ss = c->default_sample_spec;
359 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map) < 0) {
360 pa_log(__FILE__": failed to parse sample specification or channel map");
364 if ((fd = pa_oss_open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), &mode, NULL)) < 0)
367 if (pa_oss_get_hw_description(p, hwdesc, sizeof(hwdesc)) >= 0)
368 pa_log_info(__FILE__": hardware name is '%s'.", hwdesc);
372 pa_log_info(__FILE__": device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
374 if (nfrags >= 2 && frag_size >= 1)
375 if (pa_oss_set_fragments(fd, nfrags, frag_size) < 0)
378 if (pa_oss_auto_format(fd, &ss) < 0)
381 if (ioctl(fd, SNDCTL_DSP_GETBLKSIZE, &frag_size) < 0) {
382 pa_log(__FILE__": SNDCTL_DSP_GETBLKSIZE: %s", strerror(errno));
386 in_frag_size = out_frag_size = frag_size;
388 u = pa_xmalloc(sizeof(struct userdata));
390 u->use_getospace = u->use_getispace = 0;
392 if (ioctl(fd, SNDCTL_DSP_GETISPACE, &info) >= 0) {
393 pa_log_info(__FILE__": input -- %u fragments of size %u.", info.fragstotal, info.fragsize);
394 in_frag_size = info.fragsize;
395 u->use_getispace = 1;
398 if (ioctl(fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) {
399 pa_log_info(__FILE__": output -- %u fragments of size %u.", info.fragstotal, info.fragsize);
400 out_frag_size = info.fragsize;
401 u->use_getospace = 1;
404 if (mode != O_WRONLY) {
405 if (!(u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &map)))
408 u->source->userdata = u;
409 u->source->notify = source_notify_cb;
410 u->source->get_latency = source_get_latency_cb;
411 u->source->get_hw_volume = source_get_hw_volume;
412 u->source->set_hw_volume = source_set_hw_volume;
413 pa_source_set_owner(u->source, m);
414 u->source->description = pa_sprintf_malloc("Open Sound System PCM on '%s'%s%s%s",
416 hwdesc[0] ? " (" : "",
417 hwdesc[0] ? hwdesc : "",
418 hwdesc[0] ? ")" : "");
422 if (mode != O_RDONLY) {
423 if (!(u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map)))
426 u->sink->get_latency = sink_get_latency_cb;
427 u->sink->get_hw_volume = sink_get_hw_volume;
428 u->sink->set_hw_volume = sink_set_hw_volume;
429 u->sink->userdata = u;
430 pa_sink_set_owner(u->sink, m);
431 u->sink->description = pa_sprintf_malloc("Open Sound System PCM on '%s'%s%s%s",
433 hwdesc[0] ? " (" : "",
434 hwdesc[0] ? hwdesc : "",
435 hwdesc[0] ? ")" : "");
439 assert(u->source || u->sink);
441 u->io = pa_iochannel_new(c->mainloop, u->source ? fd : -1, u->sink ? fd : -1);
443 pa_iochannel_set_callback(u->io, io_callback, u);
446 u->memchunk.memblock = NULL;
447 u->memchunk.length = 0;
448 u->sample_size = pa_frame_size(&ss);
450 u->out_fragment_size = out_frag_size;
451 u->in_fragment_size = in_frag_size;
452 u->silence.memblock = pa_memblock_new(u->silence.length = u->out_fragment_size, u->core->memblock_stat);
453 assert(u->silence.memblock);
454 pa_silence_memblock(u->silence.memblock, &ss);
455 u->silence.index = 0;
463 * Some crappy drivers do not start the recording until we read something.
464 * Without this snippet, poll will never register the fd as ready.
467 char *buf = pa_xnew(char, u->sample_size);
468 read(u->fd, buf, u->sample_size);
472 /* Read mixer settings */
474 source_get_hw_volume(u->source);
476 sink_get_hw_volume(u->sink);
490 void pa__done(pa_core *c, pa_module*m) {
496 if (!(u = m->userdata))
499 if (u->memchunk.memblock)
500 pa_memblock_unref(u->memchunk.memblock);
501 if (u->silence.memblock)
502 pa_memblock_unref(u->silence.memblock);
505 pa_sink_disconnect(u->sink);
506 pa_sink_unref(u->sink);
510 pa_source_disconnect(u->source);
511 pa_source_unref(u->source);
514 pa_iochannel_free(u->io);