4 This file is part of PulseAudio.
6 Copyright 2004-2006 Lennart Poettering
7 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
9 PulseAudio is free software; you can redistribute it and/or modify
10 it under the terms of the GNU Lesser General Public License as published
11 by the Free Software Foundation; either version 2 of the License,
12 or (at your option) any later version.
14 PulseAudio is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 General Public License for more details.
19 You should have received a copy of the GNU Lesser General Public License
20 along with PulseAudio; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
29 #include <sys/soundcard.h>
30 #include <sys/ioctl.h>
41 #include <pulse/xmalloc.h>
42 #include <pulse/util.h>
44 #include <pulsecore/core-error.h>
45 #include <pulsecore/iochannel.h>
46 #include <pulsecore/sink.h>
47 #include <pulsecore/source.h>
48 #include <pulsecore/module.h>
49 #include <pulsecore/sample-util.h>
50 #include <pulsecore/core-util.h>
51 #include <pulsecore/modargs.h>
52 #include <pulsecore/log.h>
55 #include "module-oss-symdef.h"
57 PA_MODULE_AUTHOR("Lennart Poettering")
58 PA_MODULE_DESCRIPTION("OSS Sink/Source")
59 PA_MODULE_VERSION(PACKAGE_VERSION
)
61 "sink_name=<name for the sink> "
62 "source_name=<name for the source> "
63 "device=<OSS device> "
64 "record=<enable source?> "
65 "playback=<enable sink?> "
66 "format=<sample format> "
67 "channels=<number of channels> "
69 "fragments=<number of fragments> "
70 "fragment_size=<fragment size> "
71 "channel_map=<channel map>")
79 pa_memchunk memchunk
, silence
;
81 uint32_t in_fragment_size
, out_fragment_size
, sample_size
;
82 int use_getospace
, use_getispace
;
88 static const char* const valid_modargs
[] = {
103 #define DEFAULT_DEVICE "/dev/dsp"
105 static void update_usage(struct userdata
*u
) {
106 pa_module_set_used(u
->module
,
107 (u
->sink
? pa_sink_used_by(u
->sink
) : 0) +
108 (u
->source
? pa_source_used_by(u
->source
) : 0));
111 static void clear_up(struct userdata
*u
) {
115 pa_sink_disconnect(u
->sink
);
116 pa_sink_unref(u
->sink
);
121 pa_source_disconnect(u
->source
);
122 pa_source_unref(u
->source
);
127 pa_iochannel_free(u
->io
);
132 static void do_write(struct userdata
*u
) {
133 pa_memchunk
*memchunk
;
140 if (!u
->sink
|| !pa_iochannel_is_writable(u
->io
))
145 l
= u
->out_fragment_size
;
147 if (u
->use_getospace
) {
150 if (ioctl(u
->fd
, SNDCTL_DSP_GETOSPACE
, &info
) < 0)
151 u
->use_getospace
= 0;
153 if (info
.bytes
/l
> 0) {
154 l
= (info
.bytes
/l
)*l
;
161 memchunk
= &u
->memchunk
;
163 if (!memchunk
->length
)
164 if (pa_sink_render(u
->sink
, l
, memchunk
) < 0)
165 memchunk
= &u
->silence
;
167 assert(memchunk
->memblock
);
168 assert(memchunk
->memblock
->data
);
169 assert(memchunk
->length
);
171 if ((r
= pa_iochannel_write(u
->io
, (uint8_t*) memchunk
->memblock
->data
+ memchunk
->index
, memchunk
->length
)) < 0) {
173 if (errno
!= EAGAIN
) {
174 pa_log("write() failed: %s", pa_cstrerror(errno
));
177 pa_module_unload_request(u
->module
);
183 if (memchunk
== &u
->silence
)
184 assert(r
% u
->sample_size
== 0);
186 u
->memchunk
.index
+= r
;
187 u
->memchunk
.length
-= r
;
189 if (u
->memchunk
.length
<= 0) {
190 pa_memblock_unref(u
->memchunk
.memblock
);
191 u
->memchunk
.memblock
= NULL
;
195 l
= l
> (size_t) r
? l
- r
: 0;
196 } while (loop
&& l
> 0);
199 static void do_read(struct userdata
*u
) {
200 pa_memchunk memchunk
;
206 if (!u
->source
|| !pa_iochannel_is_readable(u
->io
) || !pa_idxset_size(u
->source
->outputs
))
211 l
= u
->in_fragment_size
;
213 if (u
->use_getispace
) {
216 if (ioctl(u
->fd
, SNDCTL_DSP_GETISPACE
, &info
) < 0)
217 u
->use_getispace
= 0;
219 if (info
.bytes
/l
> 0) {
220 l
= (info
.bytes
/l
)*l
;
227 memchunk
.memblock
= pa_memblock_new(u
->core
->mempool
, l
);
228 assert(memchunk
.memblock
);
229 if ((r
= pa_iochannel_read(u
->io
, memchunk
.memblock
->data
, memchunk
.memblock
->length
)) < 0) {
230 pa_memblock_unref(memchunk
.memblock
);
232 if (errno
!= EAGAIN
) {
233 pa_log("read() failed: %s", pa_cstrerror(errno
));
236 pa_module_unload_request(u
->module
);
242 assert(r
<= (ssize_t
) memchunk
.memblock
->length
);
243 memchunk
.length
= memchunk
.memblock
->length
= r
;
246 pa_source_post(u
->source
, &memchunk
);
247 pa_memblock_unref(memchunk
.memblock
);
249 l
= l
> (size_t) r
? l
- r
: 0;
250 } while (loop
&& l
> 0);
253 static void io_callback(PA_GCC_UNUSED pa_iochannel
*io
, void*userdata
) {
254 struct userdata
*u
= userdata
;
260 static void source_notify_cb(pa_source
*s
) {
261 struct userdata
*u
= s
->userdata
;
266 static pa_usec_t
sink_get_latency_cb(pa_sink
*s
) {
269 struct userdata
*u
= s
->userdata
;
270 assert(s
&& u
&& u
->sink
);
272 if (ioctl(u
->fd
, SNDCTL_DSP_GETODELAY
, &arg
) < 0) {
273 pa_log_info("device doesn't support SNDCTL_DSP_GETODELAY: %s", pa_cstrerror(errno
));
274 s
->get_latency
= NULL
;
278 r
+= pa_bytes_to_usec(arg
, &s
->sample_spec
);
280 if (u
->memchunk
.memblock
)
281 r
+= pa_bytes_to_usec(u
->memchunk
.length
, &s
->sample_spec
);
286 static pa_usec_t
source_get_latency_cb(pa_source
*s
) {
287 struct userdata
*u
= s
->userdata
;
289 assert(s
&& u
&& u
->source
);
291 if (!u
->use_getispace
)
294 if (ioctl(u
->fd
, SNDCTL_DSP_GETISPACE
, &info
) < 0) {
295 u
->use_getispace
= 0;
302 return pa_bytes_to_usec(info
.bytes
, &s
->sample_spec
);
305 static int sink_get_hw_volume(pa_sink
*s
) {
306 struct userdata
*u
= s
->userdata
;
308 if (pa_oss_get_pcm_volume(u
->fd
, &s
->sample_spec
, &s
->hw_volume
) < 0) {
309 pa_log_info("device doesn't support reading mixer settings: %s", pa_cstrerror(errno
));
310 s
->get_hw_volume
= NULL
;
317 static int sink_set_hw_volume(pa_sink
*s
) {
318 struct userdata
*u
= s
->userdata
;
320 if (pa_oss_set_pcm_volume(u
->fd
, &s
->sample_spec
, &s
->hw_volume
) < 0) {
321 pa_log_info("device doesn't support writing mixer settings: %s", pa_cstrerror(errno
));
322 s
->set_hw_volume
= NULL
;
329 static int source_get_hw_volume(pa_source
*s
) {
330 struct userdata
*u
= s
->userdata
;
332 if (pa_oss_get_input_volume(u
->fd
, &s
->sample_spec
, &s
->hw_volume
) < 0) {
333 pa_log_info("device doesn't support reading mixer settings: %s", pa_cstrerror(errno
));
334 s
->get_hw_volume
= NULL
;
341 static int source_set_hw_volume(pa_source
*s
) {
342 struct userdata
*u
= s
->userdata
;
344 if (pa_oss_set_input_volume(u
->fd
, &s
->sample_spec
, &s
->hw_volume
) < 0) {
345 pa_log_info("device doesn't support writing mixer settings: %s", pa_cstrerror(errno
));
346 s
->set_hw_volume
= NULL
;
353 int pa__init(pa_core
*c
, pa_module
*m
) {
354 struct audio_buf_info info
;
355 struct userdata
*u
= NULL
;
358 int nfrags
, frag_size
, in_frag_size
, out_frag_size
;
360 int record
= 1, playback
= 1;
363 pa_modargs
*ma
= NULL
;
366 char *name_buf
= NULL
;
372 if (!(ma
= pa_modargs_new(m
->argument
, valid_modargs
))) {
373 pa_log("failed to parse module arguments.");
377 if (pa_modargs_get_value_boolean(ma
, "record", &record
) < 0 || pa_modargs_get_value_boolean(ma
, "playback", &playback
) < 0) {
378 pa_log("record= and playback= expect numeric argument.");
382 if (!playback
&& !record
) {
383 pa_log("neither playback nor record enabled for device.");
387 mode
= (playback
&&record
) ? O_RDWR
: (playback
? O_WRONLY
: (record
? O_RDONLY
: 0));
389 ss
= c
->default_sample_spec
;
390 if (pa_modargs_get_sample_spec_and_channel_map(ma
, &ss
, &map
, PA_CHANNEL_MAP_OSS
) < 0) {
391 pa_log("failed to parse sample specification or channel map");
395 /* Fix latency to 100ms */
397 frag_size
= pa_bytes_per_second(&ss
)/128;
399 if (pa_modargs_get_value_s32(ma
, "fragments", &nfrags
) < 0 || pa_modargs_get_value_s32(ma
, "fragment_size", &frag_size
) < 0) {
400 pa_log("failed to parse fragments arguments");
404 if ((fd
= pa_oss_open(p
= pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
), &mode
, NULL
)) < 0)
407 if (pa_oss_get_hw_description(p
, hwdesc
, sizeof(hwdesc
)) >= 0)
408 pa_log_info("hardware name is '%s'.", hwdesc
);
412 pa_log_info("device opened in %s mode.", mode
== O_WRONLY
? "O_WRONLY" : (mode
== O_RDONLY
? "O_RDONLY" : "O_RDWR"));
414 if (nfrags
>= 2 && frag_size
>= 1)
415 if (pa_oss_set_fragments(fd
, nfrags
, frag_size
) < 0)
418 if (pa_oss_auto_format(fd
, &ss
) < 0)
421 if (ioctl(fd
, SNDCTL_DSP_GETBLKSIZE
, &frag_size
) < 0) {
422 pa_log("SNDCTL_DSP_GETBLKSIZE: %s", pa_cstrerror(errno
));
426 in_frag_size
= out_frag_size
= frag_size
;
428 u
= pa_xmalloc(sizeof(struct userdata
));
430 u
->use_getospace
= u
->use_getispace
= 0;
432 if (ioctl(fd
, SNDCTL_DSP_GETISPACE
, &info
) >= 0) {
433 pa_log_info("input -- %u fragments of size %u.", info
.fragstotal
, info
.fragsize
);
434 in_frag_size
= info
.fragsize
;
435 u
->use_getispace
= 1;
438 if (ioctl(fd
, SNDCTL_DSP_GETOSPACE
, &info
) >= 0) {
439 pa_log_info("output -- %u fragments of size %u.", info
.fragstotal
, info
.fragsize
);
440 out_frag_size
= info
.fragsize
;
441 u
->use_getospace
= 1;
444 if (mode
!= O_WRONLY
) {
445 if ((name
= pa_modargs_get_value(ma
, "source_name", NULL
)))
448 name
= name_buf
= pa_sprintf_malloc("oss_input.%s", pa_path_get_filename(p
));
452 if (!(u
->source
= pa_source_new(c
, __FILE__
, name
, namereg_fail
, &ss
, &map
)))
455 u
->source
->userdata
= u
;
456 u
->source
->notify
= source_notify_cb
;
457 u
->source
->get_latency
= source_get_latency_cb
;
458 u
->source
->get_hw_volume
= source_get_hw_volume
;
459 u
->source
->set_hw_volume
= source_set_hw_volume
;
460 pa_source_set_owner(u
->source
, m
);
461 pa_source_set_description(u
->source
, t
= pa_sprintf_malloc("OSS PCM on %s%s%s%s",
463 hwdesc
[0] ? " (" : "",
464 hwdesc
[0] ? hwdesc
: "",
465 hwdesc
[0] ? ")" : ""));
467 u
->source
->is_hardware
= 1;
474 if (mode
!= O_RDONLY
) {
475 if ((name
= pa_modargs_get_value(ma
, "sink_name", NULL
)))
478 name
= name_buf
= pa_sprintf_malloc("oss_output.%s", pa_path_get_filename(p
));
482 if (!(u
->sink
= pa_sink_new(c
, __FILE__
, name
, namereg_fail
, &ss
, &map
)))
485 u
->sink
->get_latency
= sink_get_latency_cb
;
486 u
->sink
->get_hw_volume
= sink_get_hw_volume
;
487 u
->sink
->set_hw_volume
= sink_set_hw_volume
;
488 u
->sink
->userdata
= u
;
489 pa_sink_set_owner(u
->sink
, m
);
490 pa_sink_set_description(u
->sink
, t
= pa_sprintf_malloc("OSS PCM on %s%s%s%s",
492 hwdesc
[0] ? " (" : "",
493 hwdesc
[0] ? hwdesc
: "",
494 hwdesc
[0] ? ")" : ""));
496 u
->sink
->is_hardware
= 1;
503 assert(u
->source
|| u
->sink
);
505 u
->io
= pa_iochannel_new(c
->mainloop
, u
->source
? fd
: -1, u
->sink
? fd
: -1);
507 pa_iochannel_set_callback(u
->io
, io_callback
, u
);
510 u
->memchunk
.memblock
= NULL
;
511 u
->memchunk
.length
= 0;
512 u
->sample_size
= pa_frame_size(&ss
);
514 u
->out_fragment_size
= out_frag_size
;
515 u
->in_fragment_size
= in_frag_size
;
516 u
->silence
.memblock
= pa_memblock_new(u
->core
->mempool
, u
->silence
.length
= u
->out_fragment_size
);
517 assert(u
->silence
.memblock
);
518 pa_silence_memblock(u
->silence
.memblock
, &ss
);
519 u
->silence
.index
= 0;
527 * Some crappy drivers do not start the recording until we read something.
528 * Without this snippet, poll will never register the fd as ready.
531 char *buf
= pa_xnew(char, u
->sample_size
);
532 pa_read(u
->fd
, buf
, u
->sample_size
, NULL
);
536 /* Read mixer settings */
538 source_get_hw_volume(u
->source
);
540 sink_get_hw_volume(u
->sink
);
556 void pa__done(pa_core
*c
, pa_module
*m
) {
562 if (!(u
= m
->userdata
))
567 if (u
->memchunk
.memblock
)
568 pa_memblock_unref(u
->memchunk
.memblock
);
569 if (u
->silence
.memblock
)
570 pa_memblock_unref(u
->silence
.memblock
);