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pulseaudio/src/modules/oss/module-oss.c
Peter Meerwald fa092af59c rtpoll: Drop extra wait_op argument to pa_rtpoll_run() 
is always true, not used

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
2014-11-09 22:53:06 +01:00

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/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
/* General power management rules:
*
* When SUSPENDED we close the audio device.
*
* We make no difference between IDLE and RUNNING in our handling.
*
* As long as we are in RUNNING/IDLE state we will *always* write data to
* the device. If none is available from the inputs, we write silence
* instead.
*
* If power should be saved on IDLE module-suspend-on-idle should be used.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include <sys/soundcard.h>
#include <sys/ioctl.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <pulse/xmalloc.h>
#include <pulse/util.h>
#include <pulsecore/core-error.h>
#include <pulsecore/thread.h>
#include <pulsecore/sink.h>
#include <pulsecore/source.h>
#include <pulsecore/module.h>
#include <pulsecore/sample-util.h>
#include <pulsecore/core-util.h>
#include <pulsecore/modargs.h>
#include <pulsecore/log.h>
#include <pulsecore/macro.h>
#include <pulsecore/thread-mq.h>
#include <pulsecore/rtpoll.h>
#include <pulsecore/poll.h>
#if defined(__NetBSD__) && !defined(SNDCTL_DSP_GETODELAY)
#include <sys/audioio.h>
#include <sys/syscall.h>
#endif
#include "oss-util.h"
#include "module-oss-symdef.h"
PA_MODULE_AUTHOR("Lennart Poettering");
PA_MODULE_DESCRIPTION("OSS Sink/Source");
PA_MODULE_VERSION(PACKAGE_VERSION);
PA_MODULE_LOAD_ONCE(false);
PA_MODULE_USAGE(
"sink_name=<name for the sink> "
"sink_properties=<properties for the sink> "
"source_name=<name for the source> "
"source_properties=<properties for the source> "
"device=<OSS device> "
"record=<enable source?> "
"playback=<enable sink?> "
"format=<sample format> "
"rate=<sample rate> "
"channels=<number of channels> "
"channel_map=<channel map> "
"fragments=<number of fragments> "
"fragment_size=<fragment size> "
"mmap=<enable memory mapping?>");
#ifdef __linux__
PA_MODULE_DEPRECATED("Please use module-alsa-card instead of module-oss!");
#endif
#define DEFAULT_DEVICE "/dev/dsp"
struct userdata {
pa_core *core;
pa_module *module;
pa_sink *sink;
pa_source *source;
pa_thread *thread;
pa_thread_mq thread_mq;
pa_rtpoll *rtpoll;
char *device_name;
pa_memchunk memchunk;
size_t frame_size;
uint32_t in_fragment_size, out_fragment_size, in_nfrags, out_nfrags, in_hwbuf_size, out_hwbuf_size;
bool use_getospace, use_getispace;
bool use_getodelay;
bool sink_suspended, source_suspended;
int fd;
int mode;
int mixer_fd;
int mixer_devmask;
int nfrags, frag_size, orig_frag_size;
bool use_mmap;
unsigned out_mmap_current, in_mmap_current;
void *in_mmap, *out_mmap;
pa_memblock **in_mmap_memblocks, **out_mmap_memblocks;
int in_mmap_saved_nfrags, out_mmap_saved_nfrags;
pa_rtpoll_item *rtpoll_item;
};
static const char* const valid_modargs[] = {
"sink_name",
"sink_properties",
"source_name",
"source_properties",
"device",
"record",
"playback",
"fragments",
"fragment_size",
"format",
"rate",
"channels",
"channel_map",
"mmap",
NULL
};
static int trigger(struct userdata *u, bool quick) {
int enable_bits = 0, zero = 0;
pa_assert(u);
if (u->fd < 0)
return 0;
pa_log_debug("trigger");
if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state))
enable_bits |= PCM_ENABLE_INPUT;
if (u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state))
enable_bits |= PCM_ENABLE_OUTPUT;
pa_log_debug("trigger: %i", enable_bits);
if (u->use_mmap) {
if (!quick)
ioctl(u->fd, SNDCTL_DSP_SETTRIGGER, &zero);
#ifdef SNDCTL_DSP_HALT
if (enable_bits == 0)
if (ioctl(u->fd, SNDCTL_DSP_HALT, NULL) < 0)
pa_log_warn("SNDCTL_DSP_HALT: %s", pa_cstrerror(errno));
#endif
if (ioctl(u->fd, SNDCTL_DSP_SETTRIGGER, &enable_bits) < 0)
pa_log_warn("SNDCTL_DSP_SETTRIGGER: %s", pa_cstrerror(errno));
if (u->sink && !(enable_bits & PCM_ENABLE_OUTPUT)) {
pa_log_debug("clearing playback buffer");
pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &u->sink->sample_spec);
}
} else {
if (enable_bits)
if (ioctl(u->fd, SNDCTL_DSP_POST, NULL) < 0)
pa_log_warn("SNDCTL_DSP_POST: %s", pa_cstrerror(errno));
if (!quick) {
/*
* Some crappy drivers do not start the recording until we
* read something. Without this snippet, poll will never
* register the fd as ready.
*/
if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
uint8_t *buf = pa_xnew(uint8_t, u->in_fragment_size);
if (pa_read(u->fd, buf, u->in_fragment_size, NULL) < 0) {
pa_log("pa_read() failed: %s", pa_cstrerror(errno));
pa_xfree(buf);
return -1;
}
pa_xfree(buf);
}
}
}
return 0;
}
static void mmap_fill_memblocks(struct userdata *u, unsigned n) {
pa_assert(u);
pa_assert(u->out_mmap_memblocks);
/* pa_log("Mmmap writing %u blocks", n); */
while (n > 0) {
pa_memchunk chunk;
if (u->out_mmap_memblocks[u->out_mmap_current])
pa_memblock_unref_fixed(u->out_mmap_memblocks[u->out_mmap_current]);
chunk.memblock = u->out_mmap_memblocks[u->out_mmap_current] =
pa_memblock_new_fixed(
u->core->mempool,
(uint8_t*) u->out_mmap + u->out_fragment_size * u->out_mmap_current,
u->out_fragment_size,
1);
chunk.length = pa_memblock_get_length(chunk.memblock);
chunk.index = 0;
pa_sink_render_into_full(u->sink, &chunk);
u->out_mmap_current++;
while (u->out_mmap_current >= u->out_nfrags)
u->out_mmap_current -= u->out_nfrags;
n--;
}
}
static int mmap_write(struct userdata *u) {
struct count_info info;
pa_assert(u);
pa_assert(u->sink);
/* pa_log("Mmmap writing..."); */
if (ioctl(u->fd, SNDCTL_DSP_GETOPTR, &info) < 0) {
pa_log("SNDCTL_DSP_GETOPTR: %s", pa_cstrerror(errno));
return -1;
}
info.blocks += u->out_mmap_saved_nfrags;
u->out_mmap_saved_nfrags = 0;
if (info.blocks > 0)
mmap_fill_memblocks(u, (unsigned) info.blocks);
return info.blocks;
}
static void mmap_post_memblocks(struct userdata *u, unsigned n) {
pa_assert(u);
pa_assert(u->in_mmap_memblocks);
/* pa_log("Mmmap reading %u blocks", n); */
while (n > 0) {
pa_memchunk chunk;
if (!u->in_mmap_memblocks[u->in_mmap_current]) {
chunk.memblock = u->in_mmap_memblocks[u->in_mmap_current] =
pa_memblock_new_fixed(
u->core->mempool,
(uint8_t*) u->in_mmap + u->in_fragment_size*u->in_mmap_current,
u->in_fragment_size,
1);
chunk.length = pa_memblock_get_length(chunk.memblock);
chunk.index = 0;
pa_source_post(u->source, &chunk);
}
u->in_mmap_current++;
while (u->in_mmap_current >= u->in_nfrags)
u->in_mmap_current -= u->in_nfrags;
n--;
}
}
static void mmap_clear_memblocks(struct userdata*u, unsigned n) {
unsigned i = u->in_mmap_current;
pa_assert(u);
pa_assert(u->in_mmap_memblocks);
if (n > u->in_nfrags)
n = u->in_nfrags;
while (n > 0) {
if (u->in_mmap_memblocks[i]) {
pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
u->in_mmap_memblocks[i] = NULL;
}
i++;
while (i >= u->in_nfrags)
i -= u->in_nfrags;
n--;
}
}
static int mmap_read(struct userdata *u) {
struct count_info info;
pa_assert(u);
pa_assert(u->source);
/* pa_log("Mmmap reading..."); */
if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) {
pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno));
return -1;
}
/* pa_log("... %i", info.blocks); */
info.blocks += u->in_mmap_saved_nfrags;
u->in_mmap_saved_nfrags = 0;
if (info.blocks > 0) {
mmap_post_memblocks(u, (unsigned) info.blocks);
mmap_clear_memblocks(u, u->in_nfrags/2);
}
return info.blocks;
}
static pa_usec_t mmap_sink_get_latency(struct userdata *u) {
struct count_info info;
size_t bpos, n;
pa_assert(u);
if (ioctl(u->fd, SNDCTL_DSP_GETOPTR, &info) < 0) {
pa_log("SNDCTL_DSP_GETOPTR: %s", pa_cstrerror(errno));
return 0;
}
u->out_mmap_saved_nfrags += info.blocks;
bpos = ((u->out_mmap_current + (unsigned) u->out_mmap_saved_nfrags) * u->out_fragment_size) % u->out_hwbuf_size;
if (bpos <= (size_t) info.ptr)
n = u->out_hwbuf_size - ((size_t) info.ptr - bpos);
else
n = bpos - (size_t) info.ptr;
/* 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); */
return pa_bytes_to_usec(n, &u->sink->sample_spec);
}
static pa_usec_t mmap_source_get_latency(struct userdata *u) {
struct count_info info;
size_t bpos, n;
pa_assert(u);
if (ioctl(u->fd, SNDCTL_DSP_GETIPTR, &info) < 0) {
pa_log("SNDCTL_DSP_GETIPTR: %s", pa_cstrerror(errno));
return 0;
}
u->in_mmap_saved_nfrags += info.blocks;
bpos = ((u->in_mmap_current + (unsigned) u->in_mmap_saved_nfrags) * u->in_fragment_size) % u->in_hwbuf_size;
if (bpos <= (size_t) info.ptr)
n = (size_t) info.ptr - bpos;
else
n = u->in_hwbuf_size - bpos + (size_t) info.ptr;
/* 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); */
return pa_bytes_to_usec(n, &u->source->sample_spec);
}
static pa_usec_t io_sink_get_latency(struct userdata *u) {
pa_usec_t r = 0;
pa_assert(u);
if (u->use_getodelay) {
int arg;
#if defined(__NetBSD__) && !defined(SNDCTL_DSP_GETODELAY)
#if defined(AUDIO_GETBUFINFO)
struct audio_info info;
if (syscall(SYS_ioctl, u->fd, AUDIO_GETBUFINFO, &info) < 0) {
pa_log_info("Device doesn't support AUDIO_GETBUFINFO: %s", pa_cstrerror(errno));
u->use_getodelay = 0;
} else {
arg = info.play.seek + info.blocksize / 2;
r = pa_bytes_to_usec((size_t) arg, &u->sink->sample_spec);
}
#else
pa_log_info("System doesn't support AUDIO_GETBUFINFO");
u->use_getodelay = 0;
#endif
#else
if (ioctl(u->fd, SNDCTL_DSP_GETODELAY, &arg) < 0) {
pa_log_info("Device doesn't support SNDCTL_DSP_GETODELAY: %s", pa_cstrerror(errno));
u->use_getodelay = 0;
} else
r = pa_bytes_to_usec((size_t) arg, &u->sink->sample_spec);
#endif
}
if (!u->use_getodelay && u->use_getospace) {
struct audio_buf_info info;
if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
pa_log_info("Device doesn't support SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
u->use_getospace = 0;
} else
r = pa_bytes_to_usec((size_t) info.bytes, &u->sink->sample_spec);
}
if (u->memchunk.memblock)
r += pa_bytes_to_usec(u->memchunk.length, &u->sink->sample_spec);
return r;
}
static pa_usec_t io_source_get_latency(struct userdata *u) {
pa_usec_t r = 0;
pa_assert(u);
if (u->use_getispace) {
struct audio_buf_info info;
if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
pa_log_info("Device doesn't support SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
u->use_getispace = 0;
} else
r = pa_bytes_to_usec((size_t) info.bytes, &u->source->sample_spec);
}
return r;
}
static void build_pollfd(struct userdata *u) {
struct pollfd *pollfd;
pa_assert(u);
pa_assert(u->fd >= 0);
if (u->rtpoll_item)
pa_rtpoll_item_free(u->rtpoll_item);
u->rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, 1);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
pollfd->fd = u->fd;
pollfd->events = 0;
pollfd->revents = 0;
}
/* Called from IO context */
static int suspend(struct userdata *u) {
pa_assert(u);
pa_assert(u->fd >= 0);
pa_log_info("Suspending...");
if (u->out_mmap_memblocks) {
unsigned i;
for (i = 0; i < u->out_nfrags; i++)
if (u->out_mmap_memblocks[i]) {
pa_memblock_unref_fixed(u->out_mmap_memblocks[i]);
u->out_mmap_memblocks[i] = NULL;
}
}
if (u->in_mmap_memblocks) {
unsigned i;
for (i = 0; i < u->in_nfrags; i++)
if (u->in_mmap_memblocks[i]) {
pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
u->in_mmap_memblocks[i] = NULL;
}
}
if (u->in_mmap && u->in_mmap != MAP_FAILED) {
munmap(u->in_mmap, u->in_hwbuf_size);
u->in_mmap = NULL;
}
if (u->out_mmap && u->out_mmap != MAP_FAILED) {
munmap(u->out_mmap, u->out_hwbuf_size);
u->out_mmap = NULL;
}
/* Let's suspend */
ioctl(u->fd, SNDCTL_DSP_SYNC, NULL);
pa_close(u->fd);
u->fd = -1;
if (u->rtpoll_item) {
pa_rtpoll_item_free(u->rtpoll_item);
u->rtpoll_item = NULL;
}
pa_log_info("Device suspended...");
return 0;
}
/* Called from IO context */
static int unsuspend(struct userdata *u) {
int m;
pa_sample_spec ss, *ss_original;
int frag_size, in_frag_size, out_frag_size;
int in_nfrags, out_nfrags;
struct audio_buf_info info;
pa_assert(u);
pa_assert(u->fd < 0);
m = u->mode;
pa_log_info("Trying resume...");
if ((u->fd = pa_oss_open(u->device_name, &m, NULL)) < 0) {
pa_log_warn("Resume failed, device busy (%s)", pa_cstrerror(errno));
return -1;
}
if (m != u->mode) {
pa_log_warn("Resume failed, couldn't open device with original access mode.");
goto fail;
}
if (u->nfrags >= 2 && u->frag_size >= 1)
if (pa_oss_set_fragments(u->fd, u->nfrags, u->orig_frag_size) < 0) {
pa_log_warn("Resume failed, couldn't set original fragment settings.");
goto fail;
}
ss = *(ss_original = u->sink ? &u->sink->sample_spec : &u->source->sample_spec);
if (pa_oss_auto_format(u->fd, &ss) < 0 || !pa_sample_spec_equal(&ss, ss_original)) {
pa_log_warn("Resume failed, couldn't set original sample format settings.");
goto fail;
}
if (ioctl(u->fd, SNDCTL_DSP_GETBLKSIZE, &frag_size) < 0) {
pa_log_warn("SNDCTL_DSP_GETBLKSIZE: %s", pa_cstrerror(errno));
goto fail;
}
in_frag_size = out_frag_size = frag_size;
in_nfrags = out_nfrags = u->nfrags;
if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) >= 0) {
in_frag_size = info.fragsize;
in_nfrags = info.fragstotal;
}
if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) {
out_frag_size = info.fragsize;
out_nfrags = info.fragstotal;
}
if ((u->source && (in_frag_size != (int) u->in_fragment_size || in_nfrags != (int) u->in_nfrags)) ||
(u->sink && (out_frag_size != (int) u->out_fragment_size || out_nfrags != (int) u->out_nfrags))) {
pa_log_warn("Resume failed, input fragment settings don't match.");
goto fail;
}
if (u->use_mmap) {
if (u->source) {
if ((u->in_mmap = mmap(NULL, u->in_hwbuf_size, PROT_READ, MAP_SHARED, u->fd, 0)) == MAP_FAILED) {
pa_log("Resume failed, mmap(): %s", pa_cstrerror(errno));
goto fail;
}
}
if (u->sink) {
if ((u->out_mmap = mmap(NULL, u->out_hwbuf_size, PROT_WRITE, MAP_SHARED, u->fd, 0)) == MAP_FAILED) {
pa_log("Resume failed, mmap(): %s", pa_cstrerror(errno));
if (u->in_mmap && u->in_mmap != MAP_FAILED) {
munmap(u->in_mmap, u->in_hwbuf_size);
u->in_mmap = NULL;
}
goto fail;
}
pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &ss);
}
}
u->out_mmap_current = u->in_mmap_current = 0;
u->out_mmap_saved_nfrags = u->in_mmap_saved_nfrags = 0;
pa_assert(!u->rtpoll_item);
build_pollfd(u);
if (u->sink && u->sink->get_volume)
u->sink->get_volume(u->sink);
if (u->source && u->source->get_volume)
u->source->get_volume(u->source);
pa_log_info("Resumed successfully...");
return 0;
fail:
pa_close(u->fd);
u->fd = -1;
return -1;
}
/* Called from IO context */
static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
struct userdata *u = PA_SINK(o)->userdata;
int ret;
bool do_trigger = false, quick = true;
switch (code) {
case PA_SINK_MESSAGE_GET_LATENCY: {
pa_usec_t r = 0;
if (u->fd >= 0) {
if (u->use_mmap)
r = mmap_sink_get_latency(u);
else
r = io_sink_get_latency(u);
}
*((pa_usec_t*) data) = r;
return 0;
}
case PA_SINK_MESSAGE_SET_STATE:
switch ((pa_sink_state_t) PA_PTR_TO_UINT(data)) {
case PA_SINK_SUSPENDED:
pa_assert(PA_SINK_IS_OPENED(u->sink->thread_info.state));
if (!u->source || u->source_suspended) {
if (suspend(u) < 0)
return -1;
}
do_trigger = true;
u->sink_suspended = true;
break;
case PA_SINK_IDLE:
case PA_SINK_RUNNING:
if (u->sink->thread_info.state == PA_SINK_INIT) {
do_trigger = true;
quick = u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state);
}
if (u->sink->thread_info.state == PA_SINK_SUSPENDED) {
if (!u->source || u->source_suspended) {
if (unsuspend(u) < 0)
return -1;
quick = false;
}
do_trigger = true;
u->out_mmap_current = 0;
u->out_mmap_saved_nfrags = 0;
u->sink_suspended = false;
}
break;
case PA_SINK_INVALID_STATE:
case PA_SINK_UNLINKED:
case PA_SINK_INIT:
;
}
break;
}
ret = pa_sink_process_msg(o, code, data, offset, chunk);
if (ret >= 0 && do_trigger) {
if (trigger(u, quick) < 0)
return -1;
}
return ret;
}
static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
struct userdata *u = PA_SOURCE(o)->userdata;
int ret;
int do_trigger = false, quick = true;
switch (code) {
case PA_SOURCE_MESSAGE_GET_LATENCY: {
pa_usec_t r = 0;
if (u->fd >= 0) {
if (u->use_mmap)
r = mmap_source_get_latency(u);
else
r = io_source_get_latency(u);
}
*((pa_usec_t*) data) = r;
return 0;
}
case PA_SOURCE_MESSAGE_SET_STATE:
switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
case PA_SOURCE_SUSPENDED:
pa_assert(PA_SOURCE_IS_OPENED(u->source->thread_info.state));
if (!u->sink || u->sink_suspended) {
if (suspend(u) < 0)
return -1;
}
do_trigger = true;
u->source_suspended = true;
break;
case PA_SOURCE_IDLE:
case PA_SOURCE_RUNNING:
if (u->source->thread_info.state == PA_SOURCE_INIT) {
do_trigger = true;
quick = u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state);
}
if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
if (!u->sink || u->sink_suspended) {
if (unsuspend(u) < 0)
return -1;
quick = false;
}
do_trigger = true;
u->in_mmap_current = 0;
u->in_mmap_saved_nfrags = 0;
u->source_suspended = false;
}
break;
case PA_SOURCE_UNLINKED:
case PA_SOURCE_INIT:
case PA_SOURCE_INVALID_STATE:
;
}
break;
}
ret = pa_source_process_msg(o, code, data, offset, chunk);
if (ret >= 0 && do_trigger) {
if (trigger(u, quick) < 0)
return -1;
}
return ret;
}
static void sink_get_volume(pa_sink *s) {
struct userdata *u;
pa_assert_se(u = s->userdata);
pa_assert(u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM));
if (u->mixer_devmask & SOUND_MASK_VOLUME)
if (pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_VOLUME, &s->sample_spec, &s->real_volume) >= 0)
return;
if (u->mixer_devmask & SOUND_MASK_PCM)
if (pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_PCM, &s->sample_spec, &s->real_volume) >= 0)
return;
pa_log_info("Device doesn't support reading mixer settings: %s", pa_cstrerror(errno));
}
static void sink_set_volume(pa_sink *s) {
struct userdata *u;
pa_assert_se(u = s->userdata);
pa_assert(u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM));
if (u->mixer_devmask & SOUND_MASK_VOLUME)
if (pa_oss_set_volume(u->mixer_fd, SOUND_MIXER_WRITE_VOLUME, &s->sample_spec, &s->real_volume) >= 0)
return;
if (u->mixer_devmask & SOUND_MASK_PCM)
if (pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_WRITE_PCM, &s->sample_spec, &s->real_volume) >= 0)
return;
pa_log_info("Device doesn't support writing mixer settings: %s", pa_cstrerror(errno));
}
static void source_get_volume(pa_source *s) {
struct userdata *u;
pa_assert_se(u = s->userdata);
pa_assert(u->mixer_devmask & (SOUND_MASK_IGAIN|SOUND_MASK_RECLEV));
if (u->mixer_devmask & SOUND_MASK_IGAIN)
if (pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_IGAIN, &s->sample_spec, &s->real_volume) >= 0)
return;
if (u->mixer_devmask & SOUND_MASK_RECLEV)
if (pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_READ_RECLEV, &s->sample_spec, &s->real_volume) >= 0)
return;
pa_log_info("Device doesn't support reading mixer settings: %s", pa_cstrerror(errno));
}
static void source_set_volume(pa_source *s) {
struct userdata *u;
pa_assert_se(u = s->userdata);
pa_assert(u->mixer_devmask & (SOUND_MASK_IGAIN|SOUND_MASK_RECLEV));
if (u->mixer_devmask & SOUND_MASK_IGAIN)
if (pa_oss_set_volume(u->mixer_fd, SOUND_MIXER_WRITE_IGAIN, &s->sample_spec, &s->real_volume) >= 0)
return;
if (u->mixer_devmask & SOUND_MASK_RECLEV)
if (pa_oss_get_volume(u->mixer_fd, SOUND_MIXER_WRITE_RECLEV, &s->sample_spec, &s->real_volume) >= 0)
return;
pa_log_info("Device doesn't support writing mixer settings: %s", pa_cstrerror(errno));
}
static void thread_func(void *userdata) {
struct userdata *u = userdata;
int write_type = 0, read_type = 0;
short revents = 0;
pa_assert(u);
pa_log_debug("Thread starting up");
if (u->core->realtime_scheduling)
pa_make_realtime(u->core->realtime_priority);
pa_thread_mq_install(&u->thread_mq);
for (;;) {
int ret;
/* pa_log("loop"); */
if (PA_UNLIKELY(u->sink && u->sink->thread_info.rewind_requested))
pa_sink_process_rewind(u->sink, 0);
/* Render some data and write it to the dsp */
if (u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state) && ((revents & POLLOUT) || u->use_mmap || u->use_getospace)) {
if (u->use_mmap) {
if ((ret = mmap_write(u)) < 0)
goto fail;
revents &= ~POLLOUT;
if (ret > 0)
continue;
} else {
ssize_t l;
bool loop = false, work_done = false;
l = (ssize_t) u->out_fragment_size;
if (u->use_getospace) {
audio_buf_info info;
if (ioctl(u->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
pa_log_info("Device doesn't support SNDCTL_DSP_GETOSPACE: %s", pa_cstrerror(errno));
u->use_getospace = false;
} else {
l = info.bytes;
/* We loop only if GETOSPACE worked and we
* actually *know* that we can write more than
* one fragment at a time */
loop = true;
}
}
/* Round down to multiples of the fragment size,
* because OSS needs that (at least some versions
* do) */
l = (l/(ssize_t) u->out_fragment_size) * (ssize_t) u->out_fragment_size;
/* Hmm, so poll() signalled us that we can read
* something, but GETOSPACE told us there was nothing?
* Hmm, make the best of it, try to read some data, to
* avoid spinning forever. */
if (l <= 0 && (revents & POLLOUT)) {
l = (ssize_t) u->out_fragment_size;
loop = false;
}
while (l > 0) {
void *p;
ssize_t t;
if (u->memchunk.length <= 0)
pa_sink_render(u->sink, (size_t) l, &u->memchunk);
pa_assert(u->memchunk.length > 0);
p = pa_memblock_acquire(u->memchunk.memblock);
t = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, &write_type);
pa_memblock_release(u->memchunk.memblock);
/* pa_log("wrote %i bytes of %u", t, l); */
pa_assert(t != 0);
if (t < 0) {
if (errno == EINTR)
continue;
else if (errno == EAGAIN) {
pa_log_debug("EAGAIN");
revents &= ~POLLOUT;
break;
} else {
pa_log("Failed to write data to DSP: %s", pa_cstrerror(errno));
goto fail;
}
} else {
u->memchunk.index += (size_t) t;
u->memchunk.length -= (size_t) t;
if (u->memchunk.length <= 0) {
pa_memblock_unref(u->memchunk.memblock);
pa_memchunk_reset(&u->memchunk);
}
l -= t;
revents &= ~POLLOUT;
work_done = true;
}
if (!loop)
break;
}
if (work_done)
continue;
}
}
/* Try to read some data and pass it on to the source driver. */
if (u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state) && ((revents & POLLIN) || u->use_mmap || u->use_getispace)) {
if (u->use_mmap) {
if ((ret = mmap_read(u)) < 0)
goto fail;
revents &= ~POLLIN;
if (ret > 0)
continue;
} else {
void *p;
ssize_t l;
pa_memchunk memchunk;
bool loop = false, work_done = false;
l = (ssize_t) u->in_fragment_size;
if (u->use_getispace) {
audio_buf_info info;
if (ioctl(u->fd, SNDCTL_DSP_GETISPACE, &info) < 0) {
pa_log_info("Device doesn't support SNDCTL_DSP_GETISPACE: %s", pa_cstrerror(errno));
u->use_getispace = false;
} else {
l = info.bytes;
loop = true;
}
}
l = (l/(ssize_t) u->in_fragment_size) * (ssize_t) u->in_fragment_size;
if (l <= 0 && (revents & POLLIN)) {
l = (ssize_t) u->in_fragment_size;
loop = false;
}
while (l > 0) {
ssize_t t;
size_t k;
pa_assert(l > 0);
memchunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1);
k = pa_memblock_get_length(memchunk.memblock);
if (k > (size_t) l)
k = (size_t) l;
k = (k/u->frame_size)*u->frame_size;
p = pa_memblock_acquire(memchunk.memblock);
t = pa_read(u->fd, p, k, &read_type);
pa_memblock_release(memchunk.memblock);
pa_assert(t != 0); /* EOF cannot happen */
/* pa_log("read %i bytes of %u", t, l); */
if (t < 0) {
pa_memblock_unref(memchunk.memblock);
if (errno == EINTR)
continue;
else if (errno == EAGAIN) {
pa_log_debug("EAGAIN");
revents &= ~POLLIN;
break;
} else {
pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno));
goto fail;
}
} else {
memchunk.index = 0;
memchunk.length = (size_t) t;
pa_source_post(u->source, &memchunk);
pa_memblock_unref(memchunk.memblock);
l -= t;
revents &= ~POLLIN;
work_done = true;
}
if (!loop)
break;
}
if (work_done)
continue;
}
}
/* pa_log("loop2 revents=%i", revents); */
if (u->rtpoll_item) {
struct pollfd *pollfd;
pa_assert(u->fd >= 0);
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
pollfd->events = (short)
(((u->source && PA_SOURCE_IS_OPENED(u->source->thread_info.state)) ? POLLIN : 0) |
((u->sink && PA_SINK_IS_OPENED(u->sink->thread_info.state)) ? POLLOUT : 0));
}
/* Hmm, nothing to do. Let's sleep */
if ((ret = pa_rtpoll_run(u->rtpoll)) < 0)
goto fail;
if (ret == 0)
goto finish;
if (u->rtpoll_item) {
struct pollfd *pollfd;
pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
if (pollfd->revents & ~(POLLOUT|POLLIN)) {
pa_log("DSP shutdown.");
goto fail;
}
revents = pollfd->revents;
} else
revents = 0;
}
fail:
/* If this was no regular exit from the loop we have to continue
* processing messages until we received PA_MESSAGE_SHUTDOWN */
pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
finish:
pa_log_debug("Thread shutting down");
}
int pa__init(pa_module*m) {
struct audio_buf_info info;
struct userdata *u = NULL;
const char *dev;
int fd = -1;
int nfrags, orig_frag_size, frag_size;
int mode, caps;
bool record = true, playback = true, use_mmap = true;
pa_sample_spec ss;
pa_channel_map map;
pa_modargs *ma = NULL;
char hwdesc[64];
const char *name;
bool namereg_fail;
pa_sink_new_data sink_new_data;
pa_source_new_data source_new_data;
pa_assert(m);
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("Failed to parse module arguments.");
goto fail;
}
if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
pa_log("record= and playback= expect boolean argument.");
goto fail;
}
if (!playback && !record) {
pa_log("Neither playback nor record enabled for device.");
goto fail;
}
mode = (playback && record) ? O_RDWR : (playback ? O_WRONLY : (record ? O_RDONLY : 0));
ss = m->core->default_sample_spec;
map = m->core->default_channel_map;
if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_OSS) < 0) {
pa_log("Failed to parse sample specification or channel map");
goto fail;
}
nfrags = (int) m->core->default_n_fragments;
frag_size = (int) pa_usec_to_bytes(m->core->default_fragment_size_msec*1000, &ss);
if (frag_size <= 0)
frag_size = (int) pa_frame_size(&ss);
if (pa_modargs_get_value_s32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_s32(ma, "fragment_size", &frag_size) < 0) {
pa_log("Failed to parse fragments arguments");
goto fail;
}
if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
pa_log("Failed to parse mmap argument.");
goto fail;
}
if ((fd = pa_oss_open(dev = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), &mode, &caps)) < 0)
goto fail;
if (use_mmap && (!(caps & DSP_CAP_MMAP) || !(caps & DSP_CAP_TRIGGER))) {
pa_log_info("OSS device not mmap capable, falling back to UNIX read/write mode.");
use_mmap = false;
}
if (use_mmap && mode == O_WRONLY) {
pa_log_info("Device opened for playback only, cannot do memory mapping, falling back to UNIX write() mode.");
use_mmap = false;
}
if (pa_oss_get_hw_description(dev, hwdesc, sizeof(hwdesc)) >= 0)
pa_log_info("Hardware name is '%s'.", hwdesc);
else
hwdesc[0] = 0;
pa_log_info("Device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
orig_frag_size = frag_size;
if (nfrags >= 2 && frag_size >= 1)
if (pa_oss_set_fragments(fd, nfrags, frag_size) < 0)
goto fail;
if (pa_oss_auto_format(fd, &ss) < 0)
goto fail;
if (ioctl(fd, SNDCTL_DSP_GETBLKSIZE, &frag_size) < 0) {
pa_log("SNDCTL_DSP_GETBLKSIZE: %s", pa_cstrerror(errno));
goto fail;
}
pa_assert(frag_size > 0);
u = pa_xnew0(struct userdata, 1);
u->core = m->core;
u->module = m;
m->userdata = u;
u->fd = fd;
u->mixer_fd = -1;
u->mixer_devmask = 0;
u->use_getospace = u->use_getispace = true;
u->use_getodelay = true;
u->mode = mode;
u->frame_size = pa_frame_size(&ss);
u->device_name = pa_xstrdup(dev);
u->in_nfrags = u->out_nfrags = (uint32_t) (u->nfrags = nfrags);
u->out_fragment_size = u->in_fragment_size = (uint32_t) (u->frag_size = frag_size);
u->orig_frag_size = orig_frag_size;
u->use_mmap = use_mmap;
u->rtpoll = pa_rtpoll_new();
pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
u->rtpoll_item = NULL;
build_pollfd(u);
if (ioctl(fd, SNDCTL_DSP_GETISPACE, &info) >= 0) {
pa_log_info("Input -- %u fragments of size %u.", info.fragstotal, info.fragsize);
u->in_fragment_size = (uint32_t) info.fragsize;
u->in_nfrags = (uint32_t) info.fragstotal;
u->use_getispace = true;
}
if (ioctl(fd, SNDCTL_DSP_GETOSPACE, &info) >= 0) {
pa_log_info("Output -- %u fragments of size %u.", info.fragstotal, info.fragsize);
u->out_fragment_size = (uint32_t) info.fragsize;
u->out_nfrags = (uint32_t) info.fragstotal;
u->use_getospace = true;
}
u->in_hwbuf_size = u->in_nfrags * u->in_fragment_size;
u->out_hwbuf_size = u->out_nfrags * u->out_fragment_size;
if (mode != O_WRONLY) {
char *name_buf = NULL;
if (use_mmap) {
if ((u->in_mmap = mmap(NULL, u->in_hwbuf_size, PROT_READ, MAP_SHARED, fd, 0)) == MAP_FAILED) {
pa_log_warn("mmap(PROT_READ) failed, reverting to non-mmap mode: %s", pa_cstrerror(errno));
use_mmap = u->use_mmap = false;
u->in_mmap = NULL;
} else
pa_log_debug("Successfully mmap()ed input buffer.");
}
if ((name = pa_modargs_get_value(ma, "source_name", NULL)))
namereg_fail = true;
else {
name = name_buf = pa_sprintf_malloc("oss_input.%s", pa_path_get_filename(dev));
namereg_fail = false;
}
pa_source_new_data_init(&source_new_data);
source_new_data.driver = __FILE__;
source_new_data.module = m;
pa_source_new_data_set_name(&source_new_data, name);
source_new_data.namereg_fail = namereg_fail;
pa_source_new_data_set_sample_spec(&source_new_data, &ss);
pa_source_new_data_set_channel_map(&source_new_data, &map);
pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_STRING, dev);
pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_API, "oss");
pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, hwdesc[0] ? hwdesc : dev);
pa_proplist_sets(source_new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, use_mmap ? "mmap" : "serial");
pa_proplist_setf(source_new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (u->in_hwbuf_size));
pa_proplist_setf(source_new_data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (u->in_fragment_size));
if (pa_modargs_get_proplist(ma, "source_properties", source_new_data.proplist, PA_UPDATE_REPLACE) < 0) {
pa_log("Invalid properties");
pa_source_new_data_done(&source_new_data);
pa_xfree(name_buf);
goto fail;
}
u->source = pa_source_new(m->core, &source_new_data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY);
pa_source_new_data_done(&source_new_data);
pa_xfree(name_buf);
if (!u->source) {
pa_log("Failed to create source object");
goto fail;
}
u->source->parent.process_msg = source_process_msg;
u->source->userdata = u;
pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
pa_source_set_rtpoll(u->source, u->rtpoll);
pa_source_set_fixed_latency(u->source, pa_bytes_to_usec(u->in_hwbuf_size, &u->source->sample_spec));
u->source->refresh_volume = true;
if (use_mmap)
u->in_mmap_memblocks = pa_xnew0(pa_memblock*, u->in_nfrags);
}
if (mode != O_RDONLY) {
char *name_buf = NULL;
if (use_mmap) {
if ((u->out_mmap = mmap(NULL, u->out_hwbuf_size, PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) {
if (mode == O_RDWR) {
pa_log_debug("mmap() failed for input. Changing to O_WRONLY mode.");
mode = O_WRONLY;
goto go_on;
} else {
pa_log_warn("mmap(PROT_WRITE) failed, reverting to non-mmap mode: %s", pa_cstrerror(errno));
u->use_mmap = use_mmap = false;
u->out_mmap = NULL;
}
} else {
pa_log_debug("Successfully mmap()ed output buffer.");
pa_silence_memory(u->out_mmap, u->out_hwbuf_size, &ss);
}
}
if ((name = pa_modargs_get_value(ma, "sink_name", NULL)))
namereg_fail = true;
else {
name = name_buf = pa_sprintf_malloc("oss_output.%s", pa_path_get_filename(dev));
namereg_fail = false;
}
pa_sink_new_data_init(&sink_new_data);
sink_new_data.driver = __FILE__;
sink_new_data.module = m;
pa_sink_new_data_set_name(&sink_new_data, name);
sink_new_data.namereg_fail = namereg_fail;
pa_sink_new_data_set_sample_spec(&sink_new_data, &ss);
pa_sink_new_data_set_channel_map(&sink_new_data, &map);
pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_STRING, dev);
pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_API, "oss");
pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, hwdesc[0] ? hwdesc : dev);
pa_proplist_sets(sink_new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, use_mmap ? "mmap" : "serial");
pa_proplist_setf(sink_new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (u->out_hwbuf_size));
pa_proplist_setf(sink_new_data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (u->out_fragment_size));
if (pa_modargs_get_proplist(ma, "sink_properties", sink_new_data.proplist, PA_UPDATE_REPLACE) < 0) {
pa_log("Invalid properties");
pa_sink_new_data_done(&sink_new_data);
pa_xfree(name_buf);
goto fail;
}
u->sink = pa_sink_new(m->core, &sink_new_data, PA_SINK_HARDWARE|PA_SINK_LATENCY);
pa_sink_new_data_done(&sink_new_data);
pa_xfree(name_buf);
if (!u->sink) {
pa_log("Failed to create sink object");
goto fail;
}
u->sink->parent.process_msg = sink_process_msg;
u->sink->userdata = u;
pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
pa_sink_set_rtpoll(u->sink, u->rtpoll);
pa_sink_set_fixed_latency(u->sink, pa_bytes_to_usec(u->out_hwbuf_size, &u->sink->sample_spec));
u->sink->refresh_volume = true;
pa_sink_set_max_request(u->sink, u->out_hwbuf_size);
if (use_mmap)
u->out_mmap_memblocks = pa_xnew0(pa_memblock*, u->out_nfrags);
}
if ((u->mixer_fd = pa_oss_open_mixer_for_device(u->device_name)) >= 0) {
bool do_close = true;
if (ioctl(fd, SOUND_MIXER_READ_DEVMASK, &u->mixer_devmask) < 0)
pa_log_warn("SOUND_MIXER_READ_DEVMASK failed: %s", pa_cstrerror(errno));
else {
if (u->sink && (u->mixer_devmask & (SOUND_MASK_VOLUME|SOUND_MASK_PCM))) {
pa_log_debug("Found hardware mixer track for playback.");
pa_sink_set_get_volume_callback(u->sink, sink_get_volume);
pa_sink_set_set_volume_callback(u->sink, sink_set_volume);
u->sink->n_volume_steps = 101;
do_close = false;
}
if (u->source && (u->mixer_devmask & (SOUND_MASK_RECLEV|SOUND_MASK_IGAIN))) {
pa_log_debug("Found hardware mixer track for recording.");
pa_source_set_get_volume_callback(u->source, source_get_volume);
pa_source_set_set_volume_callback(u->source, source_set_volume);
u->source->n_volume_steps = 101;
do_close = false;
}
}
if (do_close) {
pa_close(u->mixer_fd);
u->mixer_fd = -1;
u->mixer_devmask = 0;
}
}
go_on:
pa_assert(u->source || u->sink);
pa_memchunk_reset(&u->memchunk);
if (!(u->thread = pa_thread_new("oss", thread_func, u))) {
pa_log("Failed to create thread.");
goto fail;
}
/* Read mixer settings */
if (u->sink) {
if (sink_new_data.volume_is_set) {
if (u->sink->set_volume)
u->sink->set_volume(u->sink);
} else {
if (u->sink->get_volume)
u->sink->get_volume(u->sink);
}
}
if (u->source) {
if (source_new_data.volume_is_set) {
if (u->source->set_volume)
u->source->set_volume(u->source);
} else {
if (u->source->get_volume)
u->source->get_volume(u->source);
}
}
if (u->sink)
pa_sink_put(u->sink);
if (u->source)
pa_source_put(u->source);
pa_modargs_free(ma);
return 0;
fail:
if (u)
pa__done(m);
else if (fd >= 0)
pa_close(fd);
if (ma)
pa_modargs_free(ma);
return -1;
}
void pa__done(pa_module*m) {
struct userdata *u;
pa_assert(m);
if (!(u = m->userdata))
return;
if (u->sink)
pa_sink_unlink(u->sink);
if (u->source)
pa_source_unlink(u->source);
if (u->thread) {
pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
pa_thread_free(u->thread);
}
pa_thread_mq_done(&u->thread_mq);
if (u->sink)
pa_sink_unref(u->sink);
if (u->source)
pa_source_unref(u->source);
if (u->memchunk.memblock)
pa_memblock_unref(u->memchunk.memblock);
if (u->rtpoll_item)
pa_rtpoll_item_free(u->rtpoll_item);
if (u->rtpoll)
pa_rtpoll_free(u->rtpoll);
if (u->out_mmap_memblocks) {
unsigned i;
for (i = 0; i < u->out_nfrags; i++)
if (u->out_mmap_memblocks[i])
pa_memblock_unref_fixed(u->out_mmap_memblocks[i]);
pa_xfree(u->out_mmap_memblocks);
}
if (u->in_mmap_memblocks) {
unsigned i;
for (i = 0; i < u->in_nfrags; i++)
if (u->in_mmap_memblocks[i])
pa_memblock_unref_fixed(u->in_mmap_memblocks[i]);
pa_xfree(u->in_mmap_memblocks);
}
if (u->in_mmap && u->in_mmap != MAP_FAILED)
munmap(u->in_mmap, u->in_hwbuf_size);
if (u->out_mmap && u->out_mmap != MAP_FAILED)
munmap(u->out_mmap, u->out_hwbuf_size);
if (u->fd >= 0)
pa_close(u->fd);
if (u->mixer_fd >= 0)
pa_close(u->mixer_fd);
pa_xfree(u->device_name);
pa_xfree(u);
}
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