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/error.h>
39 #include <polyp/xmalloc.h>
41 #include <polypcore/iochannel.h>
42 #include <polypcore/sink.h>
43 #include <polypcore/source.h>
44 #include <polypcore/module.h>
45 #include <polypcore/sample-util.h>
46 #include <polypcore/core-util.h>
47 #include <polypcore/modargs.h>
48 #include <polypcore/log.h>
51 #include "module-oss-symdef.h"
53 PA_MODULE_AUTHOR("Lennart Poettering")
54 PA_MODULE_DESCRIPTION("OSS Sink/Source")
55 PA_MODULE_VERSION(PACKAGE_VERSION
)
57 "sink_name=<name for the sink> "
58 "source_name=<name for the source> "
59 "device=<OSS device> "
60 "record=<enable source?> "
61 "playback=<enable sink?> "
62 "format=<sample format> "
63 "channels=<number of channels> "
65 "fragments=<number of fragments> "
66 "fragment_size=<fragment size> "
67 "channel_map=<channel map>")
75 pa_memchunk memchunk
, silence
;
77 uint32_t in_fragment_size
, out_fragment_size
, sample_size
;
78 int use_getospace
, use_getispace
;
84 static const char* const valid_modargs
[] = {
99 #define DEFAULT_SINK_NAME "oss_output"
100 #define DEFAULT_SOURCE_NAME "oss_input"
101 #define DEFAULT_DEVICE "/dev/dsp"
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", pa_cstrerror(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", pa_cstrerror(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", pa_cstrerror(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", pa_cstrerror(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", pa_cstrerror(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", pa_cstrerror(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", pa_cstrerror(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 ss
= c
->default_sample_spec
;
352 if (pa_modargs_get_sample_spec_and_channel_map(ma
, &ss
, &map
, PA_CHANNEL_MAP_OSS
) < 0) {
353 pa_log(__FILE__
": failed to parse sample specification or channel map");
357 /* Fix latency to 100ms */
359 frag_size
= pa_bytes_per_second(&ss
)/128;
361 if (pa_modargs_get_value_s32(ma
, "fragments", &nfrags
) < 0 || pa_modargs_get_value_s32(ma
, "fragment_size", &frag_size
) < 0) {
362 pa_log(__FILE__
": failed to parse fragments arguments");
366 if ((fd
= pa_oss_open(p
= pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
), &mode
, NULL
)) < 0)
369 if (pa_oss_get_hw_description(p
, hwdesc
, sizeof(hwdesc
)) >= 0)
370 pa_log_info(__FILE__
": hardware name is '%s'.", hwdesc
);
374 pa_log_info(__FILE__
": device opened in %s mode.", mode
== O_WRONLY
? "O_WRONLY" : (mode
== O_RDONLY
? "O_RDONLY" : "O_RDWR"));
376 if (nfrags
>= 2 && frag_size
>= 1)
377 if (pa_oss_set_fragments(fd
, nfrags
, frag_size
) < 0)
380 if (pa_oss_auto_format(fd
, &ss
) < 0)
383 if (ioctl(fd
, SNDCTL_DSP_GETBLKSIZE
, &frag_size
) < 0) {
384 pa_log(__FILE__
": SNDCTL_DSP_GETBLKSIZE: %s", pa_cstrerror(errno
));
388 in_frag_size
= out_frag_size
= frag_size
;
390 u
= pa_xmalloc(sizeof(struct userdata
));
392 u
->use_getospace
= u
->use_getispace
= 0;
394 if (ioctl(fd
, SNDCTL_DSP_GETISPACE
, &info
) >= 0) {
395 pa_log_info(__FILE__
": input -- %u fragments of size %u.", info
.fragstotal
, info
.fragsize
);
396 in_frag_size
= info
.fragsize
;
397 u
->use_getispace
= 1;
400 if (ioctl(fd
, SNDCTL_DSP_GETOSPACE
, &info
) >= 0) {
401 pa_log_info(__FILE__
": output -- %u fragments of size %u.", info
.fragstotal
, info
.fragsize
);
402 out_frag_size
= info
.fragsize
;
403 u
->use_getospace
= 1;
406 if (mode
!= O_WRONLY
) {
407 if (!(u
->source
= pa_source_new(c
, __FILE__
, pa_modargs_get_value(ma
, "source_name", DEFAULT_SOURCE_NAME
), 0, &ss
, &map
)))
410 u
->source
->userdata
= u
;
411 u
->source
->notify
= source_notify_cb
;
412 u
->source
->get_latency
= source_get_latency_cb
;
413 u
->source
->get_hw_volume
= source_get_hw_volume
;
414 u
->source
->set_hw_volume
= source_set_hw_volume
;
415 pa_source_set_owner(u
->source
, m
);
416 u
->source
->description
= pa_sprintf_malloc("Open Sound System PCM on '%s'%s%s%s",
418 hwdesc
[0] ? " (" : "",
419 hwdesc
[0] ? hwdesc
: "",
420 hwdesc
[0] ? ")" : "");
424 if (mode
!= O_RDONLY
) {
425 if (!(u
->sink
= pa_sink_new(c
, __FILE__
, pa_modargs_get_value(ma
, "sink_name", DEFAULT_SINK_NAME
), 0, &ss
, &map
)))
428 u
->sink
->get_latency
= sink_get_latency_cb
;
429 u
->sink
->get_hw_volume
= sink_get_hw_volume
;
430 u
->sink
->set_hw_volume
= sink_set_hw_volume
;
431 u
->sink
->userdata
= u
;
432 pa_sink_set_owner(u
->sink
, m
);
433 u
->sink
->description
= pa_sprintf_malloc("Open Sound System PCM on '%s'%s%s%s",
435 hwdesc
[0] ? " (" : "",
436 hwdesc
[0] ? hwdesc
: "",
437 hwdesc
[0] ? ")" : "");
441 assert(u
->source
|| u
->sink
);
443 u
->io
= pa_iochannel_new(c
->mainloop
, u
->source
? fd
: -1, u
->sink
? fd
: -1);
445 pa_iochannel_set_callback(u
->io
, io_callback
, u
);
448 u
->memchunk
.memblock
= NULL
;
449 u
->memchunk
.length
= 0;
450 u
->sample_size
= pa_frame_size(&ss
);
452 u
->out_fragment_size
= out_frag_size
;
453 u
->in_fragment_size
= in_frag_size
;
454 u
->silence
.memblock
= pa_memblock_new(u
->silence
.length
= u
->out_fragment_size
, u
->core
->memblock_stat
);
455 assert(u
->silence
.memblock
);
456 pa_silence_memblock(u
->silence
.memblock
, &ss
);
457 u
->silence
.index
= 0;
465 * Some crappy drivers do not start the recording until we read something.
466 * Without this snippet, poll will never register the fd as ready.
469 char *buf
= pa_xnew(char, u
->sample_size
);
470 read(u
->fd
, buf
, u
->sample_size
);
474 /* Read mixer settings */
476 source_get_hw_volume(u
->source
);
478 sink_get_hw_volume(u
->sink
);
492 void pa__done(pa_core
*c
, pa_module
*m
) {
498 if (!(u
= m
->userdata
))
501 if (u
->memchunk
.memblock
)
502 pa_memblock_unref(u
->memchunk
.memblock
);
503 if (u
->silence
.memblock
)
504 pa_memblock_unref(u
->silence
.memblock
);
507 pa_sink_disconnect(u
->sink
);
508 pa_sink_unref(u
->sink
);
512 pa_source_disconnect(u
->source
);
513 pa_source_unref(u
->source
);
516 pa_iochannel_free(u
->io
);