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 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 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>
39 #include "iochannel.h"
44 #include "sample-util.h"
50 struct pa_source
*source
;
52 struct pa_sample_spec sample_spec
;
54 size_t in_fragment_size
, out_fragment_size
, in_fragments
, out_fragments
, out_fill
;
58 void *in_mmap
, *out_mmap
;
59 size_t in_mmap_length
, out_mmap_length
;
61 void *mainloop_source
;
63 struct pa_memblock
**in_memblocks
, **out_memblocks
;
64 unsigned out_current
, in_current
;
67 static const char* const valid_modargs
[] = {
81 #define DEFAULT_SINK_NAME "oss_output"
82 #define DEFAULT_SOURCE_NAME "oss_input"
83 #define DEFAULT_DEVICE "/dev/dsp"
85 static void out_fill_memblocks(struct userdata
*u
, unsigned n
) {
86 assert(u
&& u
->out_memblocks
);
89 struct pa_memchunk chunk
;
91 if (u
->out_memblocks
[u
->out_current
])
92 pa_memblock_unref_fixed(u
->out_memblocks
[u
->out_current
]);
94 chunk
.memblock
= u
->out_memblocks
[u
->out_current
] = pa_memblock_new_fixed(u
->out_mmap
+u
->out_fragment_size
*u
->out_current
, u
->out_fragment_size
);
95 assert(chunk
.memblock
);
96 chunk
.length
= chunk
.memblock
->length
;
99 pa_sink_render_into_full(u
->sink
, &chunk
);
102 while (u
->out_current
>= u
->out_fragments
)
103 u
->out_current
-= u
->out_fragments
;
109 static void do_write(struct userdata
*u
) {
110 struct count_info info
;
111 assert(u
&& u
->sink
);
113 if (ioctl(u
->fd
, SNDCTL_DSP_GETOPTR
, &info
) < 0) {
114 fprintf(stderr
, "SNDCTL_DSP_GETOPTR: %s\n", strerror(errno
));
118 u
->out_fill
= (u
->out_fragment_size
* u
->out_fragments
) - (info
.ptr
% u
->out_fragment_size
);
123 out_fill_memblocks(u
, info
.blocks
);
126 static void in_post_memblocks(struct userdata
*u
, unsigned n
) {
127 assert(u
&& u
->in_memblocks
);
130 struct pa_memchunk chunk
;
132 if (!u
->in_memblocks
[u
->in_current
]) {
133 chunk
.memblock
= u
->in_memblocks
[u
->in_current
] = pa_memblock_new_fixed(u
->in_mmap
+u
->in_fragment_size
*u
->in_current
, u
->in_fragment_size
);
134 chunk
.length
= chunk
.memblock
->length
;
137 pa_source_post(u
->source
, &chunk
);
141 while (u
->in_current
>= u
->in_fragments
)
142 u
->in_current
-= u
->in_fragments
;
148 static void in_clear_memblocks(struct userdata
*u
, unsigned n
) {
149 unsigned i
= u
->in_current
;
150 assert(u
&& u
->in_memblocks
);
152 if (n
> u
->in_fragments
)
156 if (u
->in_memblocks
[i
]) {
157 pa_memblock_unref_fixed(u
->in_memblocks
[i
]);
158 u
->in_memblocks
[i
] = NULL
;
162 while (i
>= u
->in_fragments
)
163 i
-= u
->in_fragments
;
169 static void do_read(struct userdata
*u
) {
170 struct count_info info
;
171 assert(u
&& u
->source
);
173 if (ioctl(u
->fd
, SNDCTL_DSP_GETIPTR
, &info
) < 0) {
174 fprintf(stderr
, "SNDCTL_DSP_GETIPTR: %s\n", strerror(errno
));
181 in_post_memblocks(u
, info
.blocks
);
182 in_clear_memblocks(u
, u
->in_fragments
/2);
185 static void io_callback(struct pa_mainloop_api
*m
, void *id
, int fd
, enum pa_mainloop_api_io_events events
, void *userdata
) {
186 struct userdata
*u
= userdata
;
188 assert (u
&& u
->core
->mainloop
== m
&& u
->mainloop_source
== id
);
190 if (events
& PA_MAINLOOP_API_IO_EVENT_INPUT
)
192 if (events
& PA_MAINLOOP_API_IO_EVENT_OUTPUT
)
196 static uint32_t sink_get_latency_cb(struct pa_sink
*s
) {
197 struct userdata
*u
= s
->userdata
;
201 return pa_bytes_to_usec(u
->out_fill
, &s
->sample_spec
);
204 int pa_module_init(struct pa_core
*c
, struct pa_module
*m
) {
205 struct audio_buf_info info
;
206 struct userdata
*u
= NULL
;
208 int nfrags
, frag_size
;
210 int enable_bits
= 0, zero
= 0;
211 int playback
= 1, record
= 1;
212 struct pa_modargs
*ma
= NULL
;
215 m
->userdata
= u
= malloc(sizeof(struct userdata
));
217 memset(u
, 0, sizeof(struct userdata
));
221 if (!(ma
= pa_modargs_new(m
->argument
, valid_modargs
))) {
222 fprintf(stderr
, __FILE__
": failed to parse module arguments.\n");
226 if (pa_modargs_get_value_u32(ma
, "record", &record
) < 0 || pa_modargs_get_value_u32(ma
, "playback", &playback
) < 0) {
227 fprintf(stderr
, __FILE__
": record= and playback= expect numeric arguments.\n");
231 mode
= (playback
&&record
) ? O_RDWR
: (playback
? O_WRONLY
: (record
? O_RDONLY
: 0));
233 fprintf(stderr
, __FILE__
": neither playback nor record enabled for device.\n");
239 if (pa_modargs_get_value_u32(ma
, "fragments", &nfrags
) < 0 || nfrags
< 2 || pa_modargs_get_value_u32(ma
, "fragment_size", &frag_size
) < 0 || frag_size
< 1) {
240 fprintf(stderr
, __FILE__
": failed to parse fragments arguments\n");
244 u
->sample_spec
= c
->default_sample_spec
;
245 if (pa_modargs_get_sample_spec(ma
, &u
->sample_spec
) < 0) {
246 fprintf(stderr
, __FILE__
": failed to parse sample specification\n");
250 if ((u
->fd
= pa_oss_open(p
= pa_modargs_get_value(ma
, "device", DEFAULT_DEVICE
), &mode
, &caps
)) < 0)
253 if (!(caps
& DSP_CAP_MMAP
) || !(caps
& DSP_CAP_REALTIME
) || !(caps
& DSP_CAP_TRIGGER
)) {
254 fprintf(stderr
, "OSS device not mmap capable.\n");
258 fprintf(stderr
, "module-oss: device opened in %s mode.\n", mode
== O_WRONLY
? "O_WRONLY" : (mode
== O_RDONLY
? "O_RDONLY" : "O_RDWR"));
260 if (pa_oss_set_fragments(u
->fd
, nfrags
, frag_size
) < 0)
263 if (pa_oss_auto_format(u
->fd
, &u
->sample_spec
) < 0)
266 if (mode
!= O_WRONLY
) {
267 if (ioctl(u
->fd
, SNDCTL_DSP_GETISPACE
, &info
) < 0) {
268 fprintf(stderr
, "SNDCTL_DSP_GETISPACE: %s\n", strerror(errno
));
272 fprintf(stderr
, "module-oss-mmap: input -- %u fragments of size %u.\n", info
.fragstotal
, info
.fragsize
);
273 u
->in_mmap_length
= (u
->in_fragment_size
= info
.fragsize
) * (u
->in_fragments
= info
.fragstotal
);
275 if ((u
->in_mmap
= mmap(NULL
, u
->in_mmap_length
, PROT_READ
, MAP_SHARED
, u
->fd
, 0)) == MAP_FAILED
) {
276 if (mode
== O_RDWR
) {
277 fprintf(stderr
, "module-oss-mmap: mmap failed for input. Changing to O_WRONLY mode.\n");
280 fprintf(stderr
, "modeule-oss-mmap: mmap(): %s\n", strerror(errno
));
285 u
->source
= pa_source_new(c
, pa_modargs_get_value(ma
, "source_name", DEFAULT_SOURCE_NAME
), 0, &u
->sample_spec
);
287 u
->source
->userdata
= u
;
288 pa_source_set_owner(u
->source
, m
);
289 u
->source
->description
= pa_sprintf_malloc("Open Sound System PCM/mmap() on '%s'", p
);
292 u
->in_memblocks
= malloc(sizeof(struct pa_memblock
*)*u
->in_fragments
);
293 memset(u
->in_memblocks
, 0, sizeof(struct pa_memblock
*)*u
->in_fragments
);
295 enable_bits
|= PCM_ENABLE_INPUT
;
299 if (mode
!= O_RDONLY
) {
300 if (ioctl(u
->fd
, SNDCTL_DSP_GETOSPACE
, &info
) < 0) {
301 fprintf(stderr
, "SNDCTL_DSP_GETOSPACE: %s\n", strerror(errno
));
305 fprintf(stderr
, "module-oss: output -- %u fragments of size %u.\n", info
.fragstotal
, info
.fragsize
);
306 u
->out_mmap_length
= (u
->out_fragment_size
= info
.fragsize
) * (u
->out_fragments
= info
.fragstotal
);
308 if ((u
->out_mmap
= mmap(NULL
, u
->out_mmap_length
, PROT_WRITE
, MAP_SHARED
, u
->fd
, 0)) == MAP_FAILED
) {
309 if (mode
== O_RDWR
) {
310 fprintf(stderr
, "module-oss-mmap: mmap filed for output. Changing to O_RDONLY mode.\n");
313 fprintf(stderr
, "module-oss-mmap: mmap(): %s\n", strerror(errno
));
317 pa_silence_memory(u
->out_mmap
, u
->out_mmap_length
, &u
->sample_spec
);
319 u
->sink
= pa_sink_new(c
, pa_modargs_get_value(ma
, "sink_name", DEFAULT_SINK_NAME
), 0, &u
->sample_spec
);
321 u
->sink
->get_latency
= sink_get_latency_cb
;
322 u
->sink
->userdata
= u
;
323 pa_sink_set_owner(u
->sink
, m
);
324 u
->sink
->description
= pa_sprintf_malloc("Open Sound System PCM/mmap() on '%s'", p
);
326 u
->out_memblocks
= malloc(sizeof(struct memblock
*)*u
->out_fragments
);
327 memset(u
->out_memblocks
, 0, sizeof(struct pa_memblock
*)*u
->out_fragments
);
329 enable_bits
|= PCM_ENABLE_OUTPUT
;
334 if (ioctl(u
->fd
, SNDCTL_DSP_SETTRIGGER
, &zero
) < 0) {
335 fprintf(stderr
, "SNDCTL_DSP_SETTRIGGER: %s\n", strerror(errno
));
339 if (ioctl(u
->fd
, SNDCTL_DSP_SETTRIGGER
, &enable_bits
) < 0) {
340 fprintf(stderr
, "SNDCTL_DSP_SETTRIGGER: %s\n", strerror(errno
));
344 assert(u
->source
|| u
->sink
);
346 u
->mainloop_source
= c
->mainloop
->source_io(c
->mainloop
, u
->fd
, (u
->source
? PA_MAINLOOP_API_IO_EVENT_INPUT
: 0) | (u
->sink
? PA_MAINLOOP_API_IO_EVENT_OUTPUT
: 0), io_callback
, u
);
347 assert(u
->mainloop_source
);
354 pa_module_done(c
, m
);
362 void pa_module_done(struct pa_core
*c
, struct pa_module
*m
) {
369 if (u
->out_memblocks
) {
371 for (i
= 0; i
< u
->out_fragments
; i
++)
372 if (u
->out_memblocks
[i
])
373 pa_memblock_unref_fixed(u
->out_memblocks
[i
]);
374 free(u
->out_memblocks
);
377 if (u
->in_memblocks
) {
379 for (i
= 0; i
< u
->in_fragments
; i
++)
380 if (u
->in_memblocks
[i
])
381 pa_memblock_unref_fixed(u
->in_memblocks
[i
]);
382 free(u
->in_memblocks
);
385 if (u
->in_mmap
&& u
->in_mmap
!= MAP_FAILED
)
386 munmap(u
->in_mmap
, u
->in_mmap_length
);
388 if (u
->out_mmap
&& u
->out_mmap
!= MAP_FAILED
)
389 munmap(u
->out_mmap
, u
->out_mmap_length
);
392 pa_sink_free(u
->sink
);
395 pa_source_free(u
->source
);
397 if (u
->mainloop_source
)
398 u
->core
->mainloop
->cancel_io(u
->core
->mainloop
, u
->mainloop_source
);