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
25 /* General power management rules:
27 * When SUSPENDED we close the audio device.
29 * We make no difference between IDLE and RUNNING in our handling.
31 * As long as we are in RUNNING/IDLE state we will *always* write data to
32 * the device. If none is avilable from the inputs, we write silence
35 * If power should be saved on IDLE module-suspend-on-idle should be used.
43 #ifdef HAVE_SYS_MMAN_H
47 #include <sys/soundcard.h>
48 #include <sys/ioctl.h>
60 #include <pulse/xmalloc.h>
61 #include <pulse/util.h>
63 #include <pulsecore/core-error.h>
64 #include <pulsecore/thread.h>
65 #include <pulsecore/sink.h>
66 #include <pulsecore/source.h>
67 #include <pulsecore/module.h>
68 #include <pulsecore/sample-util.h>
69 #include <pulsecore/core-util.h>
70 #include <pulsecore/modargs.h>
71 #include <pulsecore/log.h>
72 #include <pulsecore/macro.h>
73 #include <pulsecore/thread-mq.h>
74 #include <pulsecore/rtpoll.h>
77 #include "module-oss-symdef.h"
79 PA_MODULE_AUTHOR("Lennart Poettering");
80 PA_MODULE_DESCRIPTION("OSS Sink/Source");
81 PA_MODULE_VERSION(PACKAGE_VERSION);
82 PA_MODULE_LOAD_ONCE(FALSE);
84 "sink_name=<name for the sink> "
85 "source_name=<name for the source> "
86 "device=<OSS device> "
87 "record=<enable source?> "
88 "playback=<enable sink?> "
89 "format=<sample format> "
90 "channels=<number of channels> "
92 "fragments=<number of fragments> "
93 "fragment_size=<fragment size> "
94 "channel_map=<channel map> "
95 "mmap=<enable memory mapping?>");
97 #define DEFAULT_DEVICE "/dev/dsp"
106 pa_thread_mq thread_mq;
111 pa_memchunk memchunk;
114 uint32_t in_fragment_size, out_fragment_size, in_nfrags, out_nfrags, in_hwbuf_size, out_hwbuf_size;
115 pa_bool_t use_getospace, use_getispace;
116 pa_bool_t use_getodelay;
118 pa_bool_t sink_suspended, source_suspended;
126 int nfrags, frag_size;
129 unsigned out_mmap_current, in_mmap_current;
130 void *in_mmap, *out_mmap;
131 pa_memblock **in_mmap_memblocks, **out_mmap_memblocks;
133 int in_mmap_saved_nfrags, out_mmap_saved_nfrags;
135 pa_rtpoll_item *rtpoll_item;
138 static const char* const valid_modargs[] = {
154 static void trigger(struct userdata *u, pa_bool_t quick) {
155 int enable_bits = 0, zero = 0;
162 pa_log_debug("trigger");
164 if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state))
165 enable_bits |= PCM_ENABLE_INPUT;
167 if (u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state))
168 enable_bits |= PCM_ENABLE_OUTPUT;
170 pa_log_debug("trigger: %i", enable_bits);
176 ioctl(u->fd, SNDCTL_DSP_SETTRIGGER, &zero);
178 #ifdef SNDCTL_DSP_HALT
179 if (enable_bits == 0)
180 if (ioctl(u->fd, SNDCTL_DSP_HALT, NULL) < 0)
181 pa_log_warn("SNDCTL_DSP_HALT: %s", pa_cstrerror(errno));
184 if (ioctl(u->fd, SNDCTL_DSP_SETTRIGGER, &enable_bits) < 0)
185 pa_log_warn("SNDCTL_DSP_SETTRIGGER: %s", pa_cstrerror(errno));
187 if (u->sink && !(enable_bits & PCM_ENABLE_OUTPUT)) {
188 pa_log_debug("clearing playback buffer");
189 pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &u->sink->sample_spec);
195 if (ioctl(u->fd, SNDCTL_DSP_POST, NULL) < 0)
196 pa_log_warn("SNDCTL_DSP_POST: %s", pa_cstrerror(errno));
200 * Some crappy drivers do not start the recording until we
201 * read something. Without this snippet, poll will never
202 * register the fd as ready.
205 if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
206 uint8_t *buf = pa_xnew(uint8_t, u->in_fragment_size);
207 pa_read(u->fd, buf, u->in_fragment_size, NULL);
214 static void mmap_fill_memblocks(struct userdata *u, unsigned n) {
216 pa_assert(u->out_mmap_memblocks);
218 /* pa_log("Mmmap writing %u blocks", n); */
223 if (u->out_mmap_memblocks[u->out_mmap_current])
224 pa_memblock_unref_fixed(u->out_mmap_memblocks[u->out_mmap_current]);
226 chunk.memblock = u->out_mmap_memblocks[u->out_mmap_current] =
227 pa_memblock_new_fixed(
229 (uint8_t*) u->out_mmap + u->out_fragment_size * u->out_mmap_current,
230 u->out_fragment_size,
233 chunk.length = pa_memblock_get_length(chunk.memblock);
236 pa_sink_render_into_full(u->sink, &chunk);
238 u->out_mmap_current++;
239 while (u->out_mmap_current >= u->out_nfrags)
240 u->out_mmap_current -= u->out_nfrags;
246 static int mmap_write(struct userdata *u) {
247 struct count_info info;
252 /* pa_log("Mmmap writing..."); */
254 if (ioctl(u->fd, SNDCTL_DSP_GETOPTR, &info) < 0) {
255 pa_log("SNDCTL_DSP_GETOPTR: %s", pa_cstrerror(errno));
259 info.blocks += u->out_mmap_saved_nfrags;
260 u->out_mmap_saved_nfrags = 0;
263 mmap_fill_memblocks(u, info.blocks);
268 static void mmap_post_memblocks(struct userdata *u, unsigned n) {
270 pa_assert(u->in_mmap_memblocks);
272 /* pa_log("Mmmap reading %u blocks", n); */
277 if (!u->in_mmap_memblocks[u->in_mmap_current]) {
279 chunk.memblock = u->in_mmap_memblocks[u->in_mmap_current] =
280 pa_memblock_new_fixed(
282 (uint8_t*) u->in_mmap + u->in_fragment_size*u->in_mmap_current,
286 chunk.length = pa_memblock_get_length(chunk.memblock);
289 pa_source_post(u->source, &chunk);
292 u->in_mmap_current++;
293 while (u->in_mmap_current >= u->in_nfrags)
294 u->in_mmap_current -= u->in_nfrags;
300 static void mmap_clear_memblocks(struct userdata*u, unsigned n) {
301 unsigned i = u->in_mmap_current;
304 pa_assert(u->in_mmap_memblocks);
306 if (n > u->in_nfrags)
310 if (u->in_mmap_memblocks[i]) {
311 pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
312 u->in_mmap_memblocks[i] = NULL;
316 while (i >= u->in_nfrags)
323 static int mmap_read(struct userdata *u) {
324 struct count_info info;
326 pa_assert(u->source);
328 /* pa_log("Mmmap reading..."); */
330 if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) {
331 pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno));
335 /* pa_log("... %i", info.blocks); */
337 info.blocks += u->in_mmap_saved_nfrags;
338 u->in_mmap_saved_nfrags = 0;
340 if (info.blocks > 0) {
341 mmap_post_memblocks(u, info.blocks);
342 mmap_clear_memblocks(u, u->in_nfrags/2);
348 static pa_usec_t mmap_sink_get_latency(struct userdata *u) {
349 struct count_info info;
354 if (ioctl(u->fd, SNDCTL_DSP_GETOPTR, &info) < 0) {
355 pa_log("SNDCTL_DSP_GETOPTR: %s", pa_cstrerror(errno));
359 u->out_mmap_saved_nfrags += info.blocks;
361 bpos = ((u->out_mmap_current + u->out_mmap_saved_nfrags) * u->out_fragment_size) % u->out_hwbuf_size;
363 if (bpos <= (size_t) info.ptr)
364 n = u->out_hwbuf_size - (info.ptr - bpos);
368 /* pa_log("n = %u, bpos = %u, ptr = %u, total=%u, fragsize = %u, n_frags = %u\n", n, bpos, (unsigned) info.ptr, total, u->out_fragment_size, u->out_fragments); */
370 return pa_bytes_to_usec(n, &u->sink->sample_spec);
373 static pa_usec_t mmap_source_get_latency(struct userdata *u) {
374 struct count_info info;
379 if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) {
380 pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno));
384 u->in_mmap_saved_nfrags += info.blocks;
385 bpos = ((u->in_mmap_current + u->in_mmap_saved_nfrags) * u->in_fragment_size) % u->in_hwbuf_size;
387 if (bpos <= (size_t) info.ptr)
390 n = u->in_hwbuf_size - bpos + info.ptr;
392 /* pa_log("n = %u, bpos = %u, ptr = %u, total=%u, fragsize = %u, n_frags = %u\n", n, bpos, (unsigned) info.ptr, total, u->in_fragment_size, u->in_fragments); */
394 return pa_bytes_to_usec(n, &u->source->sample_spec);
397 static pa_usec_t io_sink_get_latency(struct userdata *u) {
402 if (u->use_getodelay) {
405 if (ioctl(u->fd, SNDCTL_DSP_GETODELAY, &arg) < 0) {
406 pa_log_info("Device doesn't support SNDCTL_DSP_GETODELAY: %s", pa_cstrerror(errno));
407 u->use_getodelay = 0;
409 r = pa_bytes_to_usec(arg, &u->sink->sample_spec);
413 if (!u->use_getodelay && u->use_getospace) {
414 struct audio_buf_info info;
416 if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
417 pa_log_info("Device doesn't support SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
418 u->use_getospace = 0;
420 r = pa_bytes_to_usec(info.bytes, &u->sink->sample_spec);
423 if (u->memchunk.memblock)
424 r += pa_bytes_to_usec(u->memchunk.length, &u->sink->sample_spec);
430 static pa_usec_t io_source_get_latency(struct userdata *u) {
435 if (u->use_getispace) {
436 struct audio_buf_info info;
438 if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
439 pa_log_info("Device doesn't support SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
440 u->use_getispace = 0;
442 r = pa_bytes_to_usec(info.bytes, &u->source->sample_spec);
448 static void build_pollfd(struct userdata *u) {
449 struct pollfd *pollfd;
452 pa_assert(u->fd >= 0);
455 pa_rtpoll_item_free(u->rtpoll_item);
457 u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
458 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
464 static int suspend(struct userdata *u) {
466 pa_assert(u->fd >= 0);
468 pa_log_info("Suspending...");
470 if (u->out_mmap_memblocks) {
472 for (i = 0; i < u->out_nfrags; i++)
473 if (u->out_mmap_memblocks[i]) {
474 pa_memblock_unref_fixed(u->out_mmap_memblocks[i]);
475 u->out_mmap_memblocks[i] = NULL;
479 if (u->in_mmap_memblocks) {
481 for (i = 0; i < u->in_nfrags; i++)
482 if (u->in_mmap_memblocks[i]) {
483 pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
484 u->in_mmap_memblocks[i] = NULL;
488 if (u->in_mmap && u->in_mmap != MAP_FAILED) {
489 munmap(u->in_mmap, u->in_hwbuf_size);
493 if (u->out_mmap && u->out_mmap != MAP_FAILED) {
494 munmap(u->out_mmap, u->out_hwbuf_size);
499 ioctl(u->fd, SNDCTL_DSP_SYNC, NULL);
503 if (u->rtpoll_item) {
504 pa_rtpoll_item_free(u->rtpoll_item);
505 u->rtpoll_item = NULL;
508 pa_log_info("Device suspended...");
513 static int unsuspend(struct userdata *u) {
515 pa_sample_spec ss, *ss_original;
516 int frag_size, in_frag_size, out_frag_size;
517 int in_nfrags, out_nfrags;
518 struct audio_buf_info info;
521 pa_assert(u->fd < 0);
525 pa_log_info("Trying resume...");
527 if ((u->fd = pa_oss_open(u->device_name, &m, NULL)) < 0) {
528 pa_log_warn("Resume failed, device busy (%s)", pa_cstrerror(errno));
532 pa_log_warn("Resume failed, couldn't open device with original access mode.");
536 if (u->nfrags >= 2 && u->frag_size >= 1)
537 if (pa_oss_set_fragments(u->fd, u->nfrags, u->frag_size) < 0) {
538 pa_log_warn("Resume failed, couldn't set original fragment settings.");
542 ss = *(ss_original = u->sink ? &u->sink->sample_spec : &u->source->sample_spec);
543 if (pa_oss_auto_format(u->fd, &ss) < 0 || !pa_sample_spec_equal(&ss, ss_original)) {
544 pa_log_warn("Resume failed, couldn't set original sample format settings.");
548 if (ioctl(u->fd, SNDCTL_DSP_GETBLKSIZE, &frag_size) < 0) {
549 pa_log_warn("SNDCTL_DSP_GETBLKSIZE: %s", pa_cstrerror(errno));
553 in_frag_size = out_frag_size = frag_size;
554 in_nfrags = out_nfrags = u->nfrags;
556 if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) >= 0) {
557 in_frag_size = info.fragsize;
558 in_nfrags = info.fragstotal;
561 if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) {
562 out_frag_size = info.fragsize;
563 out_nfrags = info.fragstotal;
566 if ((u->source && (in_frag_size != (int) u->in_fragment_size || in_nfrags != (int) u->in_nfrags)) ||
567 (u->sink && (out_frag_size != (int) u->out_fragment_size || out_nfrags != (int) u->out_nfrags))) {
568 pa_log_warn("Resume failed, input fragment settings don't match.");
574 if ((u->in_mmap = mmap(NULL, u->in_hwbuf_size, PROT_READ, MAP_SHARED, u->fd, 0)) == MAP_FAILED) {
575 pa_log("Resume failed, mmap(): %s", pa_cstrerror(errno));
581 if ((u->out_mmap = mmap(NULL, u->out_hwbuf_size, PROT_WRITE, MAP_SHARED, u->fd, 0)) == MAP_FAILED) {
582 pa_log("Resume failed, mmap(): %s", pa_cstrerror(errno));
583 if (u->in_mmap && u->in_mmap != MAP_FAILED) {
584 munmap(u->in_mmap, u->in_hwbuf_size);
591 pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &ss);
595 u->out_mmap_current = u->in_mmap_current = 0;
596 u->out_mmap_saved_nfrags = u->in_mmap_saved_nfrags = 0;
598 pa_assert(!u->rtpoll_item);
603 pa_sink_get_volume(u->sink);
605 pa_source_get_volume(u->source);
607 pa_log_info("Resumed successfully...");
617 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
618 struct userdata *u = PA_SINK(o)->userdata;
620 pa_bool_t do_trigger = FALSE, quick = TRUE;
624 case PA_SINK_MESSAGE_GET_LATENCY: {
629 r = mmap_sink_get_latency(u);
631 r = io_sink_get_latency(u);
634 *((pa_usec_t*) data) = r;
639 case PA_SINK_MESSAGE_SET_STATE:
641 switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
643 case PA_SINK_SUSPENDED:
644 pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
646 if (!u->source || u->source_suspended) {
653 u->sink_suspended = TRUE;
657 case PA_SINK_RUNNING:
659 if (u->sink->thread_info.state == PA_SINK_INIT) {
661 quick = u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state);
664 if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
666 if (!u->source || u->source_suspended) {
667 if (unsuspend(u) < 0)
674 u->out_mmap_current = 0;
675 u->out_mmap_saved_nfrags = 0;
677 u->sink_suspended = FALSE;
682 case PA_SINK_UNLINKED:
691 ret = pa_sink_process_msg(o, code, data, offset, chunk);
699 static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
700 struct userdata *u = PA_SOURCE(o)->userdata;
702 int do_trigger = FALSE, quick = TRUE;
706 case PA_SOURCE_MESSAGE_GET_LATENCY: {
711 r = mmap_source_get_latency(u);
713 r = io_source_get_latency(u);
716 *((pa_usec_t*) data) = r;
720 case PA_SOURCE_MESSAGE_SET_STATE:
722 switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
723 case PA_SOURCE_SUSPENDED:
724 pa_assert(PA_SOURCE_IS_OPENED(u->source->thread_info.state));
726 if (!u->sink || u->sink_suspended) {
733 u->source_suspended = TRUE;
737 case PA_SOURCE_RUNNING:
739 if (u->source->thread_info.state == PA_SOURCE_INIT) {
741 quick = u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state);
744 if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
746 if (!u->sink || u->sink_suspended) {
747 if (unsuspend(u) < 0)
754 u->in_mmap_current = 0;
755 u->in_mmap_saved_nfrags = 0;
757 u->source_suspended = FALSE;
761 case PA_SOURCE_UNLINKED:
770 ret = pa_source_process_msg(o, code, data, offset, chunk);
778 static int sink_get_volume(pa_sink *s) {
782 pa_assert_se(u = s->userdata);
784 pa_assert(u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM));
786 if (u->mixer_devmask & SOUND_MASK_VOLUME)
787 if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_VOLUME, &s->sample_spec, &s->volume)) >= 0)
790 if (u->mixer_devmask & SOUND_MASK_PCM)
791 if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_PCM, &s->sample_spec, &s->volume)) >= 0)
794 pa_log_info("Device doesn't support reading mixer settings: %s", pa_cstrerror(errno));
798 static int sink_set_volume(pa_sink *s) {
802 pa_assert_se(u = s->userdata);
804 pa_assert(u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM));
806 if (u->mixer_devmask & SOUND_MASK_VOLUME)
807 if ((r = pa_oss_set_volume(u->mixer_fd, SOUND_MIXER_WRITE_VOLUME, &s->sample_spec, &s->volume)) >= 0)
810 if (u->mixer_devmask & SOUND_MASK_PCM)
811 if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_WRITE_PCM, &s->sample_spec, &s->volume)) >= 0)
814 pa_log_info("Device doesn't support writing mixer settings: %s", pa_cstrerror(errno));
818 static int source_get_volume(pa_source *s) {
822 pa_assert_se(u = s->userdata);
824 pa_assert(u->mixer_devmask & (SOUND_MASK_IGAIN|SOUND_MASK_RECLEV));
826 if (u->mixer_devmask & SOUND_MASK_IGAIN)
827 if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_IGAIN, &s->sample_spec, &s->volume)) >= 0)
830 if (u->mixer_devmask & SOUND_MASK_RECLEV)
831 if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_RECLEV, &s->sample_spec, &s->volume)) >= 0)
834 pa_log_info("Device doesn't support reading mixer settings: %s", pa_cstrerror(errno));
838 static int source_set_volume(pa_source *s) {
842 pa_assert_se(u = s->userdata);
844 pa_assert(u->mixer_devmask & (SOUND_MASK_IGAIN|SOUND_MASK_RECLEV));
846 if (u->mixer_devmask & SOUND_MASK_IGAIN)
847 if ((r = pa_oss_set_volume(u->mixer_fd, SOUND_MIXER_WRITE_IGAIN, &s->sample_spec, &s->volume)) >= 0)
850 if (u->mixer_devmask & SOUND_MASK_RECLEV)
851 if ((r = pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_WRITE_RECLEV, &s->sample_spec, &s->volume)) >= 0)
854 pa_log_info("Device doesn't support writing mixer settings: %s", pa_cstrerror(errno));
858 static void thread_func(void *userdata) {
859 struct userdata *u = userdata;
860 int write_type = 0, read_type = 0;
861 unsigned short revents = 0;
865 pa_log_debug("Thread starting up");
867 if (u->core->realtime_scheduling)
868 pa_make_realtime(u->core->realtime_priority);
870 pa_thread_mq_install(&u->thread_mq);
871 pa_rtpoll_install(u->rtpoll);
876 /* pa_log("loop"); */
878 /* Render some data and write it to the dsp */
880 if (u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state) && ((revents & POLLOUT) || u->use_mmap || u->use_getospace)) {
884 if ((ret = mmap_write(u)) < 0)
894 pa_bool_t loop = FALSE, work_done = FALSE;
896 l = u->out_fragment_size;
898 if (u->use_getospace) {
901 if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
902 pa_log_info("Device doesn't support SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
903 u->use_getospace = FALSE;
907 /* We loop only if GETOSPACE worked and we
908 * actually *know* that we can write more than
909 * one fragment at a time */
914 /* Round down to multiples of the fragment size,
915 * because OSS needs that (at least some versions
917 l = (l/u->out_fragment_size) * u->out_fragment_size;
919 /* Hmm, so poll() signalled us that we can read
920 * something, but GETOSPACE told us there was nothing?
921 * Hmm, make the best of it, try to read some data, to
922 * avoid spinning forever. */
923 if (l <= 0 && (revents & POLLOUT)) {
924 l = u->out_fragment_size;
932 if (u->memchunk.length <= 0)
933 pa_sink_render(u->sink, l, &u->memchunk);
935 pa_assert(u->memchunk.length > 0);
937 p = pa_memblock_acquire(u->memchunk.memblock);
938 t = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, &write_type);
939 pa_memblock_release(u->memchunk.memblock);
941 /* pa_log("wrote %i bytes of %u", t, l); */
950 else if (errno == EAGAIN) {
951 pa_log_debug("EAGAIN");
957 pa_log("Failed to write data to DSP: %s", pa_cstrerror(errno));
963 u->memchunk.index += t;
964 u->memchunk.length -= t;
966 if (u->memchunk.length <= 0) {
967 pa_memblock_unref(u->memchunk.memblock);
968 pa_memchunk_reset(&u->memchunk);
986 /* Try to read some data and pass it on to the source driver. */
988 if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state) && ((revents & POLLIN) || u->use_mmap || u->use_getispace)) {
992 if ((ret = mmap_read(u)) < 0)
1004 pa_memchunk memchunk;
1005 pa_bool_t loop = FALSE, work_done = FALSE;
1007 l = u->in_fragment_size;
1009 if (u->use_getispace) {
1010 audio_buf_info info;
1012 if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
1013 pa_log_info("Device doesn't support SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
1014 u->use_getispace = FALSE;
1021 l = (l/u->in_fragment_size) * u->in_fragment_size;
1023 if (l <= 0 && (revents & POLLIN)) {
1024 l = u->in_fragment_size;
1033 memchunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1);
1035 k = pa_memblock_get_length(memchunk.memblock);
1040 k = (k/u->frame_size)*u->frame_size;
1042 p = pa_memblock_acquire(memchunk.memblock);
1043 t = pa_read(u->fd, p, k, &read_type);
1044 pa_memblock_release(memchunk.memblock);
1046 pa_assert(t != 0); /* EOF cannot happen */
1048 /* pa_log("read %i bytes of %u", t, l); */
1051 pa_memblock_unref(memchunk.memblock);
1056 else if (errno == EAGAIN) {
1057 pa_log_debug("EAGAIN");
1063 pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno));
1069 memchunk.length = t;
1071 pa_source_post(u->source, &memchunk);
1072 pa_memblock_unref(memchunk.memblock);
1089 /* pa_log("loop2 revents=%i", revents); */
1091 if (u->rtpoll_item) {
1092 struct pollfd *pollfd;
1094 pa_assert(u->fd >= 0);
1096 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
1098 ((u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) ? POLLIN : 0) |
1099 ((u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state)) ? POLLOUT : 0);
1102 /* Hmm, nothing to do. Let's sleep */
1103 if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
1109 if (u->rtpoll_item) {
1110 struct pollfd *pollfd;
1112 pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
1114 if (pollfd->revents & ~(POLLOUT|POLLIN)) {
1115 pa_log("DSP shutdown.");
1119 revents = pollfd->revents;
1125 /* If this was no regular exit from the loop we have to continue
1126 * processing messages until we received PA_MESSAGE_SHUTDOWN */
1127 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
1128 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
1131 pa_log_debug("Thread shutting down");
1134 int pa__init(pa_module*m) {
1136 struct audio_buf_info info;
1137 struct userdata *u = NULL;
1140 int nfrags, frag_size;
1142 pa_bool_t record = TRUE, playback = TRUE, use_mmap = TRUE;
1145 pa_modargs *ma = NULL;
1148 pa_bool_t namereg_fail;
1149 pa_sink_new_data sink_new_data;
1150 pa_source_new_data source_new_data;
1154 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
1155 pa_log("Failed to parse module arguments.");
1159 if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
1160 pa_log("record= and playback= expect boolean argument.");
1164 if (!playback && !record) {
1165 pa_log("Neither playback nor record enabled for device.");
1169 mode = (playback && record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0));
1171 ss = m->core->default_sample_spec;
1172 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_OSS) < 0) {
1173 pa_log("Failed to parse sample specification or channel map");
1177 nfrags = m->core->default_n_fragments;
1178 frag_size = pa_usec_to_bytes(m->core->default_fragment_size_msec*1000, &ss);
1180 frag_size = pa_frame_size(&ss);
1182 if (pa_modargs_get_value_s32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_s32(ma, "fragment_size", &frag_size) < 0) {
1183 pa_log("Failed to parse fragments arguments");
1187 if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
1188 pa_log("Failed to parse mmap argument.");
1192 if ((fd = pa_oss_open(dev = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), &mode, &caps)) < 0)
1195 if (use_mmap && (!(caps & DSP_CAP_MMAP) || !(caps & DSP_CAP_TRIGGER))) {
1196 pa_log_info("OSS device not mmap capable, falling back to UNIX read/write mode.");
1200 if (use_mmap && mode == O_WRONLY) {
1201 pa_log_info("Device opened for playback only, cannot do memory mapping, falling back to UNIX write() mode.");
1205 if (pa_oss_get_hw_description(dev, hwdesc, sizeof(hwdesc)) >= 0)
1206 pa_log_info("Hardware name is '%s'.", hwdesc);
1210 pa_log_info("Device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
1212 if (nfrags >= 2 && frag_size >= 1)
1213 if (pa_oss_set_fragments(fd, nfrags, frag_size) < 0)
1216 if (pa_oss_auto_format(fd, &ss) < 0)
1219 if (ioctl(fd, SNDCTL_DSP_GETBLKSIZE, &frag_size) < 0) {
1220 pa_log("SNDCTL_DSP_GETBLKSIZE: %s", pa_cstrerror(errno));
1223 pa_assert(frag_size > 0);
1225 u = pa_xnew0(struct userdata, 1);
1231 u->use_getospace = u->use_getispace = TRUE;
1232 u->use_getodelay = TRUE;
1234 u->frame_size = pa_frame_size(&ss);
1235 u->device_name = pa_xstrdup(dev);
1236 u->in_nfrags = u->out_nfrags = u->nfrags = nfrags;
1237 u->out_fragment_size = u->in_fragment_size = u->frag_size = frag_size;
1238 u->use_mmap = use_mmap;
1239 u->rtpoll = pa_rtpoll_new();
1240 pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
1241 u->rtpoll_item = NULL;
1244 if (ioctl(fd, SNDCTL_DSP_GETISPACE, &info) >= 0) {
1245 pa_log_info("Input -- %u fragments of size %u.", info.fragstotal, info.fragsize);
1246 u->in_fragment_size = info.fragsize;
1247 u->in_nfrags = info.fragstotal;
1248 u->use_getispace = TRUE;
1251 if (ioctl(fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) {
1252 pa_log_info("Output -- %u fragments of size %u.", info.fragstotal, info.fragsize);
1253 u->out_fragment_size = info.fragsize;
1254 u->out_nfrags = info.fragstotal;
1255 u->use_getospace = TRUE;
1258 u->in_hwbuf_size = u->in_nfrags * u->in_fragment_size;
1259 u->out_hwbuf_size = u->out_nfrags * u->out_fragment_size;
1261 if (mode != O_WRONLY) {
1262 char *name_buf = NULL;
1265 if ((u->in_mmap = mmap(NULL, u->in_hwbuf_size, PROT_READ, MAP_SHARED, fd, 0)) == MAP_FAILED) {
1266 pa_log_warn("mmap(PROT_READ) failed, reverting to non-mmap mode: %s", pa_cstrerror(errno));
1267 use_mmap = u->use_mmap = FALSE;
1270 pa_log_debug("Successfully mmap()ed input buffer.");
1273 if ((name = pa_modargs_get_value(ma, "source_name", NULL)))
1274 namereg_fail = TRUE;
1276 name = name_buf = pa_sprintf_malloc("oss_input.%s", pa_path_get_filename(dev));
1277 namereg_fail = FALSE;
1280 pa_source_new_data_init(&source_new_data);
1281 source_new_data.driver = __FILE__;
1282 source_new_data.module = m;
1283 pa_source_new_data_set_name(&source_new_data, name);
1284 source_new_data.namereg_fail = namereg_fail;
1285 pa_source_new_data_set_sample_spec(&source_new_data, &ss);
1286 pa_source_new_data_set_channel_map(&source_new_data, &map);
1287 pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_STRING, dev);
1288 pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_API, "oss");
1289 pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, hwdesc[0] ? hwdesc : dev);
1290 pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, use_mmap ? "mmap" : "serial");
1291 pa_proplist_setf(source_new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (u->in_hwbuf_size));
1292 pa_proplist_setf(source_new_data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (u->in_fragment_size));
1294 u->source = pa_source_new(m->core, &source_new_data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY);
1295 pa_source_new_data_done(&source_new_data);
1299 pa_log("Failed to create source object");
1303 u->source->parent.process_msg = source_process_msg;
1304 u->source->userdata = u;
1306 pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
1307 pa_source_set_rtpoll(u->source, u->rtpoll);
1308 u->source->refresh_volume = TRUE;
1311 u->in_mmap_memblocks = pa_xnew0(pa_memblock*, u->in_nfrags);
1314 if (mode != O_RDONLY) {
1315 char *name_buf = NULL;
1318 if ((u->out_mmap = mmap(NULL, u->out_hwbuf_size, PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) {
1319 if (mode == O_RDWR) {
1320 pa_log_debug("mmap() failed for input. Changing to O_WRONLY mode.");
1324 pa_log_warn("mmap(PROT_WRITE) failed, reverting to non-mmap mode: %s", pa_cstrerror(errno));
1325 u->use_mmap = use_mmap = FALSE;
1329 pa_log_debug("Successfully mmap()ed output buffer.");
1330 pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &ss);
1334 if ((name = pa_modargs_get_value(ma, "sink_name", NULL)))
1335 namereg_fail = TRUE;
1337 name = name_buf = pa_sprintf_malloc("oss_output.%s", pa_path_get_filename(dev));
1338 namereg_fail = FALSE;
1341 pa_sink_new_data_init(&sink_new_data);
1342 sink_new_data.driver = __FILE__;
1343 sink_new_data.module = m;
1344 pa_sink_new_data_set_name(&sink_new_data, name);
1345 sink_new_data.namereg_fail = namereg_fail;
1346 pa_sink_new_data_set_sample_spec(&sink_new_data, &ss);
1347 pa_sink_new_data_set_channel_map(&sink_new_data, &map);
1348 pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_STRING, dev);
1349 pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_API, "oss");
1350 pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, hwdesc[0] ? hwdesc : dev);
1351 pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, use_mmap ? "mmap" : "serial");
1352 pa_proplist_setf(sink_new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (u->out_hwbuf_size));
1353 pa_proplist_setf(sink_new_data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (u->out_fragment_size));
1355 u->sink = pa_sink_new(m->core, &sink_new_data, PA_SINK_HARDWARE|PA_SINK_LATENCY);
1356 pa_sink_new_data_done(&sink_new_data);
1360 pa_log("Failed to create sink object");
1364 u->sink->parent.process_msg = sink_process_msg;
1365 u->sink->userdata = u;
1367 pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
1368 pa_sink_set_rtpoll(u->sink, u->rtpoll);
1369 u->sink->refresh_volume = TRUE;
1372 u->out_mmap_memblocks = pa_xnew0(pa_memblock*, u->out_nfrags);
1375 if ((u->mixer_fd = pa_oss_open_mixer_for_device(u->device_name)) >= 0) {
1376 pa_bool_t do_close = TRUE;
1377 u->mixer_devmask = 0;
1379 if (ioctl(fd, SOUND_MIXER_READ_DEVMASK, &u->mixer_devmask) < 0)
1380 pa_log_warn("SOUND_MIXER_READ_DEVMASK failed: %s", pa_cstrerror(errno));
1383 if (u->sink && (u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM))) {
1384 pa_log_debug("Found hardware mixer track for playback.");
1385 u->sink->flags |= PA_SINK_HW_VOLUME_CTRL;
1386 u->sink->get_volume = sink_get_volume;
1387 u->sink->set_volume = sink_set_volume;
1391 if (u->source && (u->mixer_devmask & (SOUND_MASK_RECLEV|SOUND_MASK_IGAIN))) {
1392 pa_log_debug("Found hardware mixer track for recording.");
1393 u->source->flags |= PA_SOURCE_HW_VOLUME_CTRL;
1394 u->source->get_volume = source_get_volume;
1395 u->source->set_volume = source_set_volume;
1401 pa_close(u->mixer_fd);
1408 pa_assert(u->source || u->sink);
1410 pa_memchunk_reset(&u->memchunk);
1412 if (!(u->thread = pa_thread_new(thread_func, u))) {
1413 pa_log("Failed to create thread.");
1417 /* Read mixer settings */
1419 if (sink_new_data.volume_is_set) {
1420 if (u->sink->set_volume)
1421 u->sink->set_volume(u->sink);
1423 if (u->sink->get_volume)
1424 u->sink->get_volume(u->sink);
1429 if (source_new_data.volume_is_set) {
1430 if (u->source->set_volume)
1431 u->source->set_volume(u->source);
1433 if (u->source->get_volume)
1434 u->source->get_volume(u->source);
1439 pa_sink_put(u->sink);
1441 pa_source_put(u->source);
1443 pa_modargs_free(ma);
1455 pa_modargs_free(ma);
1460 void pa__done(pa_module*m) {
1465 if (!(u = m->userdata))
1469 pa_sink_unlink(u->sink);
1472 pa_source_unlink(u->source);
1475 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
1476 pa_thread_free(u->thread);
1479 pa_thread_mq_done(&u->thread_mq);
1482 pa_sink_unref(u->sink);
1485 pa_source_unref(u->source);
1487 if (u->memchunk.memblock)
1488 pa_memblock_unref(u->memchunk.memblock);
1491 pa_rtpoll_item_free(u->rtpoll_item);
1494 pa_rtpoll_free(u->rtpoll);
1496 if (u->out_mmap_memblocks) {
1498 for (i = 0; i < u->out_nfrags; i++)
1499 if (u->out_mmap_memblocks[i])
1500 pa_memblock_unref_fixed(u->out_mmap_memblocks[i]);
1501 pa_xfree(u->out_mmap_memblocks);
1504 if (u->in_mmap_memblocks) {
1506 for (i = 0; i < u->in_nfrags; i++)
1507 if (u->in_mmap_memblocks[i])
1508 pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
1509 pa_xfree(u->in_mmap_memblocks);
1512 if (u->in_mmap && u->in_mmap != MAP_FAILED)
1513 munmap(u->in_mmap, u->in_hwbuf_size);
1515 if (u->out_mmap && u->out_mmap != MAP_FAILED)
1516 munmap(u->out_mmap, u->out_hwbuf_size);
1521 if (u->mixer_fd >= 0)
1522 pa_close(u->mixer_fd);
1524 pa_xfree(u->device_name);