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 <polyp/xmalloc.h>
40 #include <polypcore/iochannel.h>
41 #include <polypcore/sink.h>
42 #include <polypcore/source.h>
43 #include <polypcore/module.h>
44 #include <polypcore/sample-util.h>
45 #include <polypcore/util.h>
46 #include <polypcore/modargs.h>
47 #include <polypcore/log.h>
50 #include "module-oss-symdef.h"
52 PA_MODULE_AUTHOR("Lennart Poettering")
53 PA_MODULE_DESCRIPTION("OSS Sink/Source")
54 PA_MODULE_VERSION(PACKAGE_VERSION)
56 "sink_name=<name for the sink> "
57 "source_name=<name for the source> "
58 "device=<OSS device> "
59 "record=<enable source?> "
60 "playback=<enable sink?> "
61 "format=<sample format> "
62 "channels=<number of channels> "
64 "fragments=<number of fragments> "
65 "fragment_size=<fragment size> "
66 "channel_map=<channel map>")
74 pa_memchunk memchunk, silence;
76 uint32_t in_fragment_size, out_fragment_size, sample_size;
77 int use_getospace, use_getispace;
83 static const char* const valid_modargs[] = {
98 #define DEFAULT_SINK_NAME "oss_output"
99 #define DEFAULT_SOURCE_NAME "oss_input"
100 #define DEFAULT_DEVICE "/dev/dsp"
102 static void update_usage(struct userdata *u) {
103 pa_module_set_used(u->module,
104 (u->sink ? pa_idxset_size(u->sink->inputs) : 0) +
105 (u->sink ? pa_idxset_size(u->sink->monitor_source->outputs) : 0) +
106 (u->source ? pa_idxset_size(u->source->outputs) : 0));
109 static void do_write(struct userdata *u) {
110 pa_memchunk *memchunk;
117 if (!u->sink || !pa_iochannel_is_writable(u->io))
122 l = u->out_fragment_size;
124 if (u->use_getospace) {
127 if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0)
128 u->use_getospace = 0;
130 if (info.bytes/l > 0) {
131 l = (info.bytes/l)*l;
138 memchunk = &u->memchunk;
140 if (!memchunk->length)
141 if (pa_sink_render(u->sink, l, memchunk) < 0)
142 memchunk = &u->silence;
144 assert(memchunk->memblock);
145 assert(memchunk->memblock->data);
146 assert(memchunk->length);
148 if ((r = pa_iochannel_write(u->io, (uint8_t*) memchunk->memblock->data + memchunk->index, memchunk->length)) < 0) {
149 pa_log(__FILE__": write() failed: %s", strerror(errno));
153 if (memchunk == &u->silence)
154 assert(r % u->sample_size == 0);
156 u->memchunk.index += r;
157 u->memchunk.length -= r;
159 if (u->memchunk.length <= 0) {
160 pa_memblock_unref(u->memchunk.memblock);
161 u->memchunk.memblock = NULL;
165 l = l > (size_t) r ? l - r : 0;
166 } while (loop && l > 0);
169 static void do_read(struct userdata *u) {
170 pa_memchunk memchunk;
176 if (!u->source || !pa_iochannel_is_readable(u->io) || !pa_idxset_size(u->source->outputs))
181 l = u->in_fragment_size;
183 if (u->use_getispace) {
186 if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0)
187 u->use_getispace = 0;
189 if (info.bytes/l > 0) {
190 l = (info.bytes/l)*l;
197 memchunk.memblock = pa_memblock_new(l, u->core->memblock_stat);
198 assert(memchunk.memblock);
199 if ((r = pa_iochannel_read(u->io, memchunk.memblock->data, memchunk.memblock->length)) < 0) {
200 pa_memblock_unref(memchunk.memblock);
202 pa_log(__FILE__": read() failed: %s", strerror(errno));
206 assert(r <= (ssize_t) memchunk.memblock->length);
207 memchunk.length = memchunk.memblock->length = r;
210 pa_source_post(u->source, &memchunk);
211 pa_memblock_unref(memchunk.memblock);
213 l = l > (size_t) r ? l - r : 0;
214 } while (loop && l > 0);
217 static void io_callback(PA_GCC_UNUSED pa_iochannel *io, void*userdata) {
218 struct userdata *u = userdata;
224 static void source_notify_cb(pa_source *s) {
225 struct userdata *u = s->userdata;
230 static pa_usec_t sink_get_latency_cb(pa_sink *s) {
233 struct userdata *u = s->userdata;
234 assert(s && u && u->sink);
236 if (ioctl(u->fd, SNDCTL_DSP_GETODELAY, &arg) < 0) {
237 pa_log_info(__FILE__": device doesn't support SNDCTL_DSP_GETODELAY: %s", strerror(errno));
238 s->get_latency = NULL;
242 r += pa_bytes_to_usec(arg, &s->sample_spec);
244 if (u->memchunk.memblock)
245 r += pa_bytes_to_usec(u->memchunk.length, &s->sample_spec);
250 static pa_usec_t source_get_latency_cb(pa_source *s) {
251 struct userdata *u = s->userdata;
253 assert(s && u && u->source);
255 if (!u->use_getispace)
258 if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
259 u->use_getispace = 0;
266 return pa_bytes_to_usec(info.bytes, &s->sample_spec);
269 static int sink_get_hw_volume(pa_sink *s) {
270 struct userdata *u = s->userdata;
272 if (pa_oss_get_pcm_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) {
273 pa_log_info(__FILE__": device doesn't support reading mixer settings: %s", strerror(errno));
274 s->get_hw_volume = NULL;
281 static int sink_set_hw_volume(pa_sink *s) {
282 struct userdata *u = s->userdata;
284 if (pa_oss_set_pcm_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) {
285 pa_log_info(__FILE__": device doesn't support writing mixer settings: %s", strerror(errno));
286 s->set_hw_volume = NULL;
293 static int source_get_hw_volume(pa_source *s) {
294 struct userdata *u = s->userdata;
296 if (pa_oss_get_input_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) {
297 pa_log_info(__FILE__": device doesn't support reading mixer settings: %s", strerror(errno));
298 s->get_hw_volume = NULL;
305 static int source_set_hw_volume(pa_source *s) {
306 struct userdata *u = s->userdata;
308 if (pa_oss_set_input_volume(u->fd, &s->sample_spec, &s->hw_volume) < 0) {
309 pa_log_info(__FILE__": device doesn't support writing mixer settings: %s", strerror(errno));
310 s->set_hw_volume = NULL;
317 int pa__init(pa_core *c, pa_module*m) {
318 struct audio_buf_info info;
319 struct userdata *u = NULL;
322 int nfrags, frag_size, in_frag_size, out_frag_size;
324 int record = 1, playback = 1;
327 pa_modargs *ma = NULL;
333 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
334 pa_log(__FILE__": failed to parse module arguments.");
338 if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
339 pa_log(__FILE__": record= and playback= expect numeric argument.");
343 if (!playback && !record) {
344 pa_log(__FILE__": neither playback nor record enabled for device.");
348 mode = (playback&&record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0));
350 ss = c->default_sample_spec;
351 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_OSS) < 0) {
352 pa_log(__FILE__": failed to parse sample specification or channel map");
356 /* Fix latency to 100ms */
358 frag_size = pa_bytes_per_second(&ss)/128;
360 if (pa_modargs_get_value_s32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_s32(ma, "fragment_size", &frag_size) < 0) {
361 pa_log(__FILE__": failed to parse fragments arguments");
365 if ((fd = pa_oss_open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), &mode, NULL)) < 0)
368 if (pa_oss_get_hw_description(p, hwdesc, sizeof(hwdesc)) >= 0)
369 pa_log_info(__FILE__": hardware name is '%s'.", hwdesc);
373 pa_log_info(__FILE__": device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
375 if (nfrags >= 2 && frag_size >= 1)
376 if (pa_oss_set_fragments(fd, nfrags, frag_size) < 0)
379 if (pa_oss_auto_format(fd, &ss) < 0)
382 if (ioctl(fd, SNDCTL_DSP_GETBLKSIZE, &frag_size) < 0) {
383 pa_log(__FILE__": SNDCTL_DSP_GETBLKSIZE: %s", strerror(errno));
387 in_frag_size = out_frag_size = frag_size;
389 u = pa_xmalloc(sizeof(struct userdata));
391 u->use_getospace = u->use_getispace = 0;
393 if (ioctl(fd, SNDCTL_DSP_GETISPACE, &info) >= 0) {
394 pa_log_info(__FILE__": input -- %u fragments of size %u.", info.fragstotal, info.fragsize);
395 in_frag_size = info.fragsize;
396 u->use_getispace = 1;
399 if (ioctl(fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) {
400 pa_log_info(__FILE__": output -- %u fragments of size %u.", info.fragstotal, info.fragsize);
401 out_frag_size = info.fragsize;
402 u->use_getospace = 1;
405 if (mode != O_WRONLY) {
406 if (!(u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &map)))
409 u->source->userdata = u;
410 u->source->notify = source_notify_cb;
411 u->source->get_latency = source_get_latency_cb;
412 u->source->get_hw_volume = source_get_hw_volume;
413 u->source->set_hw_volume = source_set_hw_volume;
414 pa_source_set_owner(u->source, m);
415 u->source->description = pa_sprintf_malloc("Open Sound System PCM on '%s'%s%s%s",
417 hwdesc[0] ? " (" : "",
418 hwdesc[0] ? hwdesc : "",
419 hwdesc[0] ? ")" : "");
423 if (mode != O_RDONLY) {
424 if (!(u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map)))
427 u->sink->get_latency = sink_get_latency_cb;
428 u->sink->get_hw_volume = sink_get_hw_volume;
429 u->sink->set_hw_volume = sink_set_hw_volume;
430 u->sink->userdata = u;
431 pa_sink_set_owner(u->sink, m);
432 u->sink->description = pa_sprintf_malloc("Open Sound System PCM on '%s'%s%s%s",
434 hwdesc[0] ? " (" : "",
435 hwdesc[0] ? hwdesc : "",
436 hwdesc[0] ? ")" : "");
440 assert(u->source || u->sink);
442 u->io = pa_iochannel_new(c->mainloop, u->source ? fd : -1, u->sink ? fd : -1);
444 pa_iochannel_set_callback(u->io, io_callback, u);
447 u->memchunk.memblock = NULL;
448 u->memchunk.length = 0;
449 u->sample_size = pa_frame_size(&ss);
451 u->out_fragment_size = out_frag_size;
452 u->in_fragment_size = in_frag_size;
453 u->silence.memblock = pa_memblock_new(u->silence.length = u->out_fragment_size, u->core->memblock_stat);
454 assert(u->silence.memblock);
455 pa_silence_memblock(u->silence.memblock, &ss);
456 u->silence.index = 0;
464 * Some crappy drivers do not start the recording until we read something.
465 * Without this snippet, poll will never register the fd as ready.
468 char *buf = pa_xnew(char, u->sample_size);
469 read(u->fd, buf, u->sample_size);
473 /* Read mixer settings */
475 source_get_hw_volume(u->source);
477 sink_get_hw_volume(u->sink);
491 void pa__done(pa_core *c, pa_module*m) {
497 if (!(u = m->userdata))
500 if (u->memchunk.memblock)
501 pa_memblock_unref(u->memchunk.memblock);
502 if (u->silence.memblock)
503 pa_memblock_unref(u->silence.memblock);
506 pa_sink_disconnect(u->sink);
507 pa_sink_unref(u->sink);
511 pa_source_disconnect(u->source);
512 pa_source_unref(u->source);
515 pa_iochannel_free(u->io);