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
)
54 PA_MODULE_USAGE("sink_name=<name for the sink> source_name=<name for the source> device=<OSS device> record=<enable source?> playback=<enable sink?> format=<sample format> channels=<number of channels> rate=<sample rate> fragments=<number of fragments> fragment_size=<fragment size>")
62 pa_memchunk memchunk
, silence
;
64 uint32_t in_fragment_size
, out_fragment_size
, sample_size
;
65 int use_getospace
, use_getispace
;
71 static const char* const valid_modargs
[] = {
85 #define DEFAULT_SINK_NAME "oss_output"
86 #define DEFAULT_SOURCE_NAME "oss_input"
87 #define DEFAULT_DEVICE "/dev/dsp"
89 static void update_usage(struct userdata
*u
) {
90 pa_module_set_used(u
->module
,
91 (u
->sink
? pa_idxset_size(u
->sink
->inputs
) : 0) +
92 (u
->sink
? pa_idxset_size(u
->sink
->monitor_source
->outputs
) : 0) +
93 (u
->source
? pa_idxset_size(u
->source
->outputs
) : 0));
96 static void do_write(struct userdata
*u
) {
97 pa_memchunk
*memchunk
;
104 if (!u
->sink
|| !pa_iochannel_is_writable(u
->io
))
109 l
= u
->out_fragment_size
;
111 if (u
->use_getospace
) {
114 if (ioctl(u
->fd
, SNDCTL_DSP_GETOSPACE
, &info
) < 0)
115 u
->use_getospace
= 0;
117 if (info
.bytes
/l
> 0) {
118 l
= (info
.bytes
/l
)*l
;
125 memchunk
= &u
->memchunk
;
127 if (!memchunk
->length
)
128 if (pa_sink_render(u
->sink
, l
, memchunk
) < 0)
129 memchunk
= &u
->silence
;
131 assert(memchunk
->memblock
);
132 assert(memchunk
->memblock
->data
);
133 assert(memchunk
->length
);
135 if ((r
= pa_iochannel_write(u
->io
, (uint8_t*) memchunk
->memblock
->data
+ memchunk
->index
, memchunk
->length
)) < 0) {
136 pa_log(__FILE__
": write() failed: %s\n", strerror(errno
));
140 if (memchunk
== &u
->silence
)
141 assert(r
% u
->sample_size
== 0);
143 u
->memchunk
.index
+= r
;
144 u
->memchunk
.length
-= r
;
146 if (u
->memchunk
.length
<= 0) {
147 pa_memblock_unref(u
->memchunk
.memblock
);
148 u
->memchunk
.memblock
= NULL
;
152 l
= l
> (size_t) r
? l
- r
: 0;
153 } while (loop
&& l
> 0);
156 static void do_read(struct userdata
*u
) {
157 pa_memchunk memchunk
;
163 if (!u
->source
|| !pa_iochannel_is_readable(u
->io
) || !pa_idxset_size(u
->source
->outputs
))
168 l
= u
->in_fragment_size
;
170 if (u
->use_getispace
) {
173 if (ioctl(u
->fd
, SNDCTL_DSP_GETISPACE
, &info
) < 0)
174 u
->use_getispace
= 0;
176 if (info
.bytes
/l
> 0) {
177 l
= (info
.bytes
/l
)*l
;
184 memchunk
.memblock
= pa_memblock_new(l
, u
->core
->memblock_stat
);
185 assert(memchunk
.memblock
);
186 if ((r
= pa_iochannel_read(u
->io
, memchunk
.memblock
->data
, memchunk
.memblock
->length
)) < 0) {
187 pa_memblock_unref(memchunk
.memblock
);
189 pa_log(__FILE__
": read() failed: %s\n", strerror(errno
));
193 assert(r
<= (ssize_t
) memchunk
.memblock
->length
);
194 memchunk
.length
= memchunk
.memblock
->length
= r
;
197 pa_source_post(u
->source
, &memchunk
);
198 pa_memblock_unref(memchunk
.memblock
);
200 l
= l
> (size_t) r
? l
- r
: 0;
201 } while (loop
&& l
> 0);
204 static void io_callback(PA_GCC_UNUSED pa_iochannel
*io
, void*userdata
) {
205 struct userdata
*u
= userdata
;
211 static void source_notify_cb(pa_source
*s
) {
212 struct userdata
*u
= s
->userdata
;
217 static pa_usec_t
sink_get_latency_cb(pa_sink
*s
) {
220 struct userdata
*u
= s
->userdata
;
221 assert(s
&& u
&& u
->sink
);
223 if (ioctl(u
->fd
, SNDCTL_DSP_GETODELAY
, &arg
) < 0) {
224 pa_log_info(__FILE__
": device doesn't support SNDCTL_DSP_GETODELAY: %s\n", strerror(errno
));
225 s
->get_latency
= NULL
;
229 r
+= pa_bytes_to_usec(arg
, &s
->sample_spec
);
231 if (u
->memchunk
.memblock
)
232 r
+= pa_bytes_to_usec(u
->memchunk
.length
, &s
->sample_spec
);
237 static pa_usec_t
source_get_latency_cb(pa_source
*s
) {
238 struct userdata
*u
= s
->userdata
;
240 assert(s
&& u
&& u
->source
);
242 if (!u
->use_getispace
)
245 if (ioctl(u
->fd
, SNDCTL_DSP_GETISPACE
, &info
) < 0) {
246 u
->use_getispace
= 0;
253 return pa_bytes_to_usec(info
.bytes
, &s
->sample_spec
);
256 static int sink_get_hw_volume(pa_sink
*s
) {
257 struct userdata
*u
= s
->userdata
;
259 if (pa_oss_get_volume(u
->fd
, &s
->sample_spec
, &s
->hw_volume
) < 0) {
260 pa_log_info(__FILE__
": device doesn't support reading mixer settings: %s\n", strerror(errno
));
261 s
->get_hw_volume
= NULL
;
268 static int sink_set_hw_volume(pa_sink
*s
) {
269 struct userdata
*u
= s
->userdata
;
271 if (pa_oss_set_volume(u
->fd
, &s
->sample_spec
, &s
->hw_volume
) < 0) {
272 pa_log_info(__FILE__
": device doesn't support writing mixer settings: %s\n", strerror(errno
));
273 s
->set_hw_volume
= NULL
;
280 int pa__init(pa_core
*c
, pa_module
*m
) {
281 struct audio_buf_info info
;
282 struct userdata
*u
= NULL
;
285 int nfrags
, frag_size
, in_frag_size
, out_frag_size
;
287 int record
= 1, playback
= 1;
289 pa_modargs
*ma
= NULL
;
292 if (!(ma
= pa_modargs_new(m
->argument
, valid_modargs
))) {
293 pa_log(__FILE__
": failed to parse module arguments.\n");
297 if (pa_modargs_get_value_boolean(ma
, "record", &record
) < 0 || pa_modargs_get_value_boolean(ma
, "playback", &playback
) < 0) {
298 pa_log(__FILE__
": record= and playback= expect numeric argument.\n");
302 if (!playback
&& !record
) {
303 pa_log(__FILE__
": neither playback nor record enabled for device.\n");
307 mode
= (playback
&&record
) ? O_RDWR
: (playback
? O_WRONLY
: (record
? O_RDONLY
: 0));
311 if (pa_modargs_get_value_s32(ma
, "fragments", &nfrags
) < 0 || pa_modargs_get_value_s32(ma
, "fragment_size", &frag_size
) < 0) {
312 pa_log(__FILE__
": failed to parse fragments arguments\n");
316 ss
= c
->default_sample_spec
;
317 if (pa_modargs_get_sample_spec(ma
, &ss
) < 0) {
318 pa_log(__FILE__
": failed to parse sample specification\n");
322 if ((fd
= pa_oss_open(p
= pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
), &mode
, NULL
)) < 0)
325 pa_log_info(__FILE__
": device opened in %s mode.\n", mode
== O_WRONLY
? "O_WRONLY" : (mode
== O_RDONLY
? "O_RDONLY" : "O_RDWR"));
327 if (nfrags
>= 2 && frag_size
>= 1)
328 if (pa_oss_set_fragments(fd
, nfrags
, frag_size
) < 0)
331 if (pa_oss_auto_format(fd
, &ss
) < 0)
334 if (ioctl(fd
, SNDCTL_DSP_GETBLKSIZE
, &frag_size
) < 0) {
335 pa_log(__FILE__
": SNDCTL_DSP_GETBLKSIZE: %s\n", strerror(errno
));
339 in_frag_size
= out_frag_size
= frag_size
;
341 u
= pa_xmalloc(sizeof(struct userdata
));
343 u
->use_getospace
= u
->use_getispace
= 0;
345 if (ioctl(fd
, SNDCTL_DSP_GETISPACE
, &info
) >= 0) {
346 pa_log_info(__FILE__
": input -- %u fragments of size %u.\n", info
.fragstotal
, info
.fragsize
);
347 in_frag_size
= info
.fragsize
;
348 u
->use_getispace
= 1;
351 if (ioctl(fd
, SNDCTL_DSP_GETOSPACE
, &info
) >= 0) {
352 pa_log_info(__FILE__
": output -- %u fragments of size %u.\n", info
.fragstotal
, info
.fragsize
);
353 out_frag_size
= info
.fragsize
;
354 u
->use_getospace
= 1;
357 if (mode
!= O_WRONLY
) {
358 u
->source
= pa_source_new(c
, __FILE__
, pa_modargs_get_value(ma
, "source_name", DEFAULT_SOURCE_NAME
), 0, &ss
, NULL
);
360 u
->source
->userdata
= u
;
361 u
->source
->notify
= source_notify_cb
;
362 u
->source
->get_latency
= source_get_latency_cb
;
363 pa_source_set_owner(u
->source
, m
);
364 u
->source
->description
= pa_sprintf_malloc("Open Sound System PCM on '%s'", p
);
368 if (mode
!= O_RDONLY
) {
369 u
->sink
= pa_sink_new(c
, __FILE__
, pa_modargs_get_value(ma
, "sink_name", DEFAULT_SINK_NAME
), 0, &ss
, NULL
);
371 u
->sink
->get_latency
= sink_get_latency_cb
;
372 u
->sink
->get_hw_volume
= sink_get_hw_volume
;
373 u
->sink
->set_hw_volume
= sink_set_hw_volume
;
374 u
->sink
->userdata
= u
;
375 pa_sink_set_owner(u
->sink
, m
);
376 u
->sink
->description
= pa_sprintf_malloc("Open Sound System PCM on '%s'", p
);
380 assert(u
->source
|| u
->sink
);
382 u
->io
= pa_iochannel_new(c
->mainloop
, u
->source
? fd
: -1, u
->sink
? fd
: -1);
384 pa_iochannel_set_callback(u
->io
, io_callback
, u
);
387 u
->memchunk
.memblock
= NULL
;
388 u
->memchunk
.length
= 0;
389 u
->sample_size
= pa_frame_size(&ss
);
391 u
->out_fragment_size
= out_frag_size
;
392 u
->in_fragment_size
= in_frag_size
;
393 u
->silence
.memblock
= pa_memblock_new(u
->silence
.length
= u
->out_fragment_size
, u
->core
->memblock_stat
);
394 assert(u
->silence
.memblock
);
395 pa_silence_memblock(u
->silence
.memblock
, &ss
);
396 u
->silence
.index
= 0;
404 * Some crappy drivers do not start the recording until we read something.
405 * Without this snippet, poll will never register the fd as ready.
408 char buf
[u
->sample_size
];
409 read(u
->fd
, buf
, u
->sample_size
);
412 /* Read mixer settings */
414 sink_get_hw_volume(u
->sink
);
428 void pa__done(pa_core
*c
, pa_module
*m
) {
432 if (!(u
= m
->userdata
))
435 if (u
->memchunk
.memblock
)
436 pa_memblock_unref(u
->memchunk
.memblock
);
437 if (u
->silence
.memblock
)
438 pa_memblock_unref(u
->silence
.memblock
);
441 pa_sink_disconnect(u
->sink
);
442 pa_sink_unref(u
->sink
);
446 pa_source_disconnect(u
->source
);
447 pa_source_unref(u
->source
);
450 pa_iochannel_free(u
->io
);