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
);