really create glitch-free branch

git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/glitch-free@2120 fefdeb5f-60dc-0310-8127-8f9354f1896f

1 files changed, 766 insertions, 0 deletions

diff --git a/src/modules/module-solaris.c b/src/modules/module-solaris.c
new file mode 100644
index 00000000..4a5c88e4
--- /dev/null
+++ b/src/modules/module-solaris.c
@@ -0,0 +1,766 @@
+/* $Id$ */
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2006 Lennart Poettering
+  Copyright 2006-2007 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 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.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <limits.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <signal.h>
+#include <stropts.h>
+#include <sys/conf.h>
+#include <sys/audio.h>
+
+#include <pulse/error.h>
+#include <pulse/mainloop-signal.h>
+#include <pulse/xmalloc.h>
+#include <pulse/timeval.h>
+
+#include <pulsecore/iochannel.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/core-error.h>
+#include <pulsecore/thread-mq.h>
+#include <pulsecore/rtpoll.h>
+#include <pulsecore/thread.h>
+
+#include "module-solaris-symdef.h"
+
+PA_MODULE_AUTHOR("Pierre Ossman")
+PA_MODULE_DESCRIPTION("Solaris Sink/Source")
+PA_MODULE_VERSION(PACKAGE_VERSION)
+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> "
+    "buffer_size=<record buffer size> "
+    "channel_map=<channel map>")
+
+struct userdata {
+    pa_core *core;
+    pa_sink *sink;
+    pa_source *source;
+
+    pa_thread *thread;
+    pa_thread_mq thread_mq;
+    pa_rtpoll *rtpoll;
+
+    pa_signal_event *sig;
+
+    pa_memchunk memchunk;
+
+    unsigned int page_size;
+
+    uint32_t frame_size;
+    uint32_t buffer_size;
+    unsigned int written_bytes, read_bytes;
+
+    int fd;
+    pa_rtpoll_item *rtpoll_item;
+    pa_module *module;
+};
+
+static const char* const valid_modargs[] = {
+    "sink_name",
+    "source_name",
+    "device",
+    "record",
+    "playback",
+    "buffer_size",
+    "format",
+    "rate",
+    "channels",
+    "channel_map",
+    NULL
+};
+
+#define DEFAULT_SINK_NAME "solaris_output"
+#define DEFAULT_SOURCE_NAME "solaris_input"
+#define DEFAULT_DEVICE "/dev/audio"
+
+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 err;
+    audio_info_t info;
+
+    switch (code) {
+    case PA_SINK_MESSAGE_GET_LATENCY: {
+        pa_usec_t r = 0;
+
+        if (u->fd >= 0) {
+
+            err = ioctl(u->fd, AUDIO_GETINFO, &info);
+            pa_assert(err >= 0);
+
+            r += pa_bytes_to_usec(u->written_bytes, &PA_SINK(o)->sample_spec);
+            r -= pa_bytes_to_usec(info.play.samples * u->frame_size, &PA_SINK(o)->sample_spec);
+
+            if (u->memchunk.memblock)
+                r += pa_bytes_to_usec(u->memchunk.length, &PA_SINK(o)->sample_spec);
+        }
+
+        *((pa_usec_t*) data) = r;
+
+        return 0;
+    }
+
+    case PA_SINK_MESSAGE_SET_VOLUME:
+        if (u->fd >= 0) {
+            AUDIO_INITINFO(&info);
+
+            info.play.gain = pa_cvolume_avg((pa_cvolume*)data) * AUDIO_MAX_GAIN / PA_VOLUME_NORM;
+            assert(info.play.gain <= AUDIO_MAX_GAIN);
+
+            if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0) {
+                if (errno == EINVAL)
+                    pa_log("AUDIO_SETINFO: Unsupported volume.");
+                else
+                    pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
+            } else {
+                return 0;
+            }
+        }
+        break;
+
+    case PA_SINK_MESSAGE_GET_VOLUME:
+        if (u->fd >= 0) {
+            err = ioctl(u->fd, AUDIO_GETINFO, &info);
+            assert(err >= 0);
+
+            pa_cvolume_set((pa_cvolume*) data, ((pa_cvolume*) data)->channels,
+                info.play.gain * PA_VOLUME_NORM / AUDIO_MAX_GAIN);
+
+            return 0;
+        }
+        break;
+
+    case PA_SINK_MESSAGE_SET_MUTE:
+        if (u->fd >= 0) {
+            AUDIO_INITINFO(&info);
+
+            info.output_muted = !!PA_PTR_TO_UINT(data);
+
+            if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0)
+                pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
+            else
+                return 0;
+        }
+        break;
+
+    case PA_SINK_MESSAGE_GET_MUTE:
+        if (u->fd >= 0) {
+            err = ioctl(u->fd, AUDIO_GETINFO, &info);
+            pa_assert(err >= 0);
+
+            *(int*)data = !!info.output_muted;
+
+            return 0;
+        }
+        break;
+    }
+
+    return pa_sink_process_msg(o, code, data, offset, chunk);
+}
+
+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 err;
+    audio_info_t info;
+
+    switch (code) {
+        case PA_SOURCE_MESSAGE_GET_LATENCY: {
+            pa_usec_t r = 0;
+
+            if (u->fd) {
+                err = ioctl(u->fd, AUDIO_GETINFO, &info);
+                pa_assert(err >= 0);
+
+                r += pa_bytes_to_usec(info.record.samples * u->frame_size, &PA_SOURCE(o)->sample_spec);
+                r -= pa_bytes_to_usec(u->read_bytes, &PA_SOURCE(o)->sample_spec);
+            }
+
+            *((pa_usec_t*) data) = r;
+
+            return 0;
+        }
+
+        case PA_SOURCE_MESSAGE_SET_VOLUME:
+            if (u->fd >= 0) {
+                AUDIO_INITINFO(&info);
+
+                info.record.gain = pa_cvolume_avg((pa_cvolume*) data) * AUDIO_MAX_GAIN / PA_VOLUME_NORM;
+                assert(info.record.gain <= AUDIO_MAX_GAIN);
+
+                if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0) {
+                    if (errno == EINVAL)
+                        pa_log("AUDIO_SETINFO: Unsupported volume.");
+                    else
+                        pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
+                } else {
+                    return 0;
+                }
+            }
+            break;
+
+        case PA_SOURCE_MESSAGE_GET_VOLUME:
+            if (u->fd >= 0) {
+                err = ioctl(u->fd, AUDIO_GETINFO, &info);
+                pa_assert(err >= 0);
+
+                pa_cvolume_set((pa_cvolume*) data, ((pa_cvolume*) data)->channels,
+                    info.record.gain * PA_VOLUME_NORM / AUDIO_MAX_GAIN);
+
+                return 0;
+            }
+            break;
+    }
+
+    return pa_source_process_msg(o, code, data, offset, chunk);
+}
+
+static void clear_underflow(struct userdata *u)
+{
+    audio_info_t info;
+
+    AUDIO_INITINFO(&info);
+
+    info.play.error = 0;
+
+    if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0)
+        pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
+}
+
+static void clear_overflow(struct userdata *u)
+{
+    audio_info_t info;
+
+    AUDIO_INITINFO(&info);
+
+    info.record.error = 0;
+
+    if (ioctl(u->fd, AUDIO_SETINFO, &info) < 0)
+        pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
+}
+
+static void thread_func(void *userdata) {
+    struct userdata *u = userdata;
+    unsigned short revents = 0;
+    int ret;
+
+    pa_assert(u);
+
+    pa_log_debug("Thread starting up");
+
+    if (u->core->high_priority)
+        pa_make_realtime();
+
+    pa_thread_mq_install(&u->thread_mq);
+    pa_rtpoll_install(u->rtpoll);
+
+    for (;;) {
+        /* Render some data and write it to the dsp */
+
+        if (u->sink && PA_SINK_OPENED(u->sink->thread_info.state)) {
+            audio_info_t info;
+            int err;
+            size_t len;
+
+            err = ioctl(u->fd, AUDIO_GETINFO, &info);
+            pa_assert(err >= 0);
+
+            /*
+             * Since we cannot modify the size of the output buffer we fake it
+             * by not filling it more than u->buffer_size.
+             */
+            len = u->buffer_size;
+            len -= u->written_bytes - (info.play.samples * u->frame_size);
+
+            /* The sample counter can sometimes go backwards :( */
+            if (len > u->buffer_size)
+                len = 0;
+
+            if (info.play.error) {
+                pa_log_debug("Solaris buffer underflow!");
+                clear_underflow(u);
+            }
+
+            len -= len % u->frame_size;
+
+            while (len) {
+                void *p;
+                ssize_t r;
+
+                if (!u->memchunk.length)
+                    pa_sink_render(u->sink, len, &u->memchunk);
+
+                pa_assert(u->memchunk.length);
+
+                p = pa_memblock_acquire(u->memchunk.memblock);
+                r = pa_write(u->fd, (uint8_t*) p + u->memchunk.index, u->memchunk.length, NULL);
+                pa_memblock_release(u->memchunk.memblock);
+
+                if (r < 0) {
+                    if (errno == EINTR)
+                        continue;
+                    else if (errno != EAGAIN) {
+                        pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno));
+                        goto fail;
+                    }
+                } else {
+                    pa_assert(r % u->frame_size == 0);
+
+                    u->memchunk.index += r;
+                    u->memchunk.length -= r;
+
+                    if (u->memchunk.length <= 0) {
+                        pa_memblock_unref(u->memchunk.memblock);
+                        pa_memchunk_reset(&u->memchunk);
+                    }
+
+                    len -= r;
+                    u->written_bytes += r;
+                }
+            }
+        }
+
+        /* Try to read some data and pass it on to the source driver */
+
+        if (u->source && PA_SOURCE_OPENED(u->source->thread_info.state) && ((revents & POLLIN))) {
+            pa_memchunk memchunk;
+            int err;
+            size_t l;
+            void *p;
+            ssize_t r;
+            audio_info_t info;
+
+            err = ioctl(u->fd, AUDIO_GETINFO, &info);
+            pa_assert(err >= 0);
+
+            if (info.record.error) {
+                pa_log_debug("Solaris buffer overflow!");
+                clear_overflow(u);
+            }
+
+            err = ioctl(u->fd, I_NREAD, &l);
+            pa_assert(err >= 0);
+
+            if (l > 0) {
+                /* This is to make sure it fits in the memory pool. Also, a page
+                   should be the most efficient transfer size. */
+                if (l > u->page_size)
+                    l = u->page_size;
+
+                memchunk.memblock = pa_memblock_new(u->core->mempool, l);
+                pa_assert(memchunk.memblock);
+
+                p = pa_memblock_acquire(memchunk.memblock);
+                r = pa_read(u->fd, p, l, NULL);
+                pa_memblock_release(memchunk.memblock);
+
+                if (r < 0) {
+                    pa_memblock_unref(memchunk.memblock);
+                    if (errno != EAGAIN) {
+                        pa_log("Failed to read data from DSP: %s", pa_cstrerror(errno));
+                        goto fail;
+                    }
+                } else {
+                    memchunk.index = 0;
+                    memchunk.length = r;
+
+                    pa_source_post(u->source, &memchunk);
+                    pa_memblock_unref(memchunk.memblock);
+
+                    u->read_bytes += r;
+
+                    revents &= ~POLLIN;
+                }
+            }
+        }
+
+        if (u->fd >= 0) {
+            struct pollfd *pollfd;
+
+            pollfd = pa_rtpoll_item_get_pollfd(u->rtpoll_item, NULL);
+            pollfd->events =
+                ((u->source && PA_SOURCE_OPENED(u->source->thread_info.state)) ? POLLIN : 0);
+        }
+
+        /* Hmm, nothing to do. Let's sleep */
+        if ((ret = pa_rtpoll_run(u->rtpoll, 1)) < 0)
+            goto fail;
+
+        if (ret == 0)
+            goto finish;
+
+        if (u->fd >= 0) {
+            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:
+    /* We have to continue processing messages until we receive the
+     * SHUTDOWN message */
+    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");
+}
+
+static void sig_callback(pa_mainloop_api *api, pa_signal_event*e, int sig, void *userdata) {
+    struct userdata *u = userdata;
+
+    assert(u);
+
+    if (u->sink) {
+        pa_sink_get_volume(u->sink);
+        pa_sink_get_mute(u->sink);
+    }
+
+    if (u->source)
+        pa_source_get_volume(u->source);
+}
+
+static int pa_solaris_auto_format(int fd, int mode, pa_sample_spec *ss) {
+    audio_info_t info;
+
+    AUDIO_INITINFO(&info);
+
+    if (mode != O_RDONLY) {
+        info.play.sample_rate = ss->rate;
+        info.play.channels = ss->channels;
+        switch (ss->format) {
+        case PA_SAMPLE_U8:
+            info.play.precision = 8;
+            info.play.encoding = AUDIO_ENCODING_LINEAR;
+            break;
+        case PA_SAMPLE_ALAW:
+            info.play.precision = 8;
+            info.play.encoding = AUDIO_ENCODING_ALAW;
+            break;
+        case PA_SAMPLE_ULAW:
+            info.play.precision = 8;
+            info.play.encoding = AUDIO_ENCODING_ULAW;
+            break;
+        case PA_SAMPLE_S16NE:
+            info.play.precision = 16;
+            info.play.encoding = AUDIO_ENCODING_LINEAR;
+            break;
+        default:
+            return -1;
+        }
+    }
+
+    if (mode != O_WRONLY) {
+        info.record.sample_rate = ss->rate;
+        info.record.channels = ss->channels;
+        switch (ss->format) {
+        case PA_SAMPLE_U8:
+            info.record.precision = 8;
+            info.record.encoding = AUDIO_ENCODING_LINEAR;
+            break;
+        case PA_SAMPLE_ALAW:
+            info.record.precision = 8;
+            info.record.encoding = AUDIO_ENCODING_ALAW;
+            break;
+        case PA_SAMPLE_ULAW:
+            info.record.precision = 8;
+            info.record.encoding = AUDIO_ENCODING_ULAW;
+            break;
+        case PA_SAMPLE_S16NE:
+            info.record.precision = 16;
+            info.record.encoding = AUDIO_ENCODING_LINEAR;
+            break;
+        default:
+            return -1;
+        }
+    }
+
+    if (ioctl(fd, AUDIO_SETINFO, &info) < 0) {
+        if (errno == EINVAL)
+            pa_log("AUDIO_SETINFO: Unsupported sample format.");
+        else
+            pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
+        return -1;
+    }
+
+    return 0;
+}
+
+static int pa_solaris_set_buffer(int fd, int buffer_size) {
+    audio_info_t info;
+
+    AUDIO_INITINFO(&info);
+
+    info.play.buffer_size = buffer_size;
+    info.record.buffer_size = buffer_size;
+
+    if (ioctl(fd, AUDIO_SETINFO, &info) < 0) {
+        if (errno == EINVAL)
+            pa_log("AUDIO_SETINFO: Unsupported buffer size.");
+        else
+            pa_log("AUDIO_SETINFO: %s", pa_cstrerror(errno));
+        return -1;
+    }
+
+    return 0;
+}
+
+int pa__init(pa_module *m) {
+    struct userdata *u = NULL;
+    const char *p;
+    int fd = -1;
+    int buffer_size;
+    int mode;
+    int record = 1, playback = 1;
+    pa_sample_spec ss;
+    pa_channel_map map;
+    pa_modargs *ma = NULL;
+    char *t;
+    struct pollfd *pollfd;
+
+    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 numeric 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));
+
+    buffer_size = 16384;
+    if (pa_modargs_get_value_s32(ma, "buffer_size", &buffer_size) < 0) {
+        pa_log("failed to parse buffer size argument");
+        goto fail;
+    }
+
+    ss = m->core->default_sample_spec;
+    if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
+        pa_log("failed to parse sample specification");
+        goto fail;
+    }
+
+    if ((fd = open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), mode | O_NONBLOCK)) < 0)
+        goto fail;
+
+    pa_log_info("device opened in %s mode.", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
+
+    if (pa_solaris_auto_format(fd, mode, &ss) < 0)
+        goto fail;
+
+    if (pa_solaris_set_buffer(fd, buffer_size) < 0)
+        goto fail;
+
+    u = pa_xmalloc(sizeof(struct userdata));
+    u->core = m->core;
+
+    u->fd = fd;
+
+    pa_memchunk_reset(&u->memchunk);
+
+    /* We use this to get a reasonable chunk size */
+    u->page_size = PA_PAGE_SIZE;
+
+    u->frame_size = pa_frame_size(&ss);
+    u->buffer_size = buffer_size;
+
+    u->written_bytes = 0;
+    u->read_bytes = 0;
+
+    u->module = m;
+    m->userdata = u;
+
+    pa_thread_mq_init(&u->thread_mq, m->core->mainloop);
+
+    u->rtpoll = pa_rtpoll_new();
+    pa_rtpoll_item_new_asyncmsgq(u->rtpoll, PA_RTPOLL_EARLY, u->thread_mq.inq);
+
+    pa_rtpoll_set_timer_periodic(u->rtpoll, pa_bytes_to_usec(u->buffer_size / 10, &ss));
+
+    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 = fd;
+    pollfd->events = 0;
+    pollfd->revents = 0;
+
+    if (mode != O_WRONLY) {
+        u->source = pa_source_new(m->core, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &map);
+        pa_assert(u->source);
+
+        u->source->userdata = u;
+        u->source->parent.process_msg = source_process_msg;
+
+        pa_source_set_module(u->source, m);
+        pa_source_set_description(u->source, t = pa_sprintf_malloc("Solaris PCM on '%s'", p));
+        pa_xfree(t);
+        pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
+        pa_source_set_rtpoll(u->source, u->rtpoll);
+
+        u->source->flags = PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY|PA_SOURCE_HW_VOLUME_CTRL;
+        u->source->refresh_volume = 1;
+    } else
+        u->source = NULL;
+
+    if (mode != O_RDONLY) {
+        u->sink = pa_sink_new(m->core, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map);
+        pa_assert(u->sink);
+
+        u->sink->userdata = u;
+        u->sink->parent.process_msg = sink_process_msg;
+
+        pa_sink_set_module(u->sink, m);
+        pa_sink_set_description(u->sink, t = pa_sprintf_malloc("Solaris PCM on '%s'", p));
+        pa_xfree(t);
+        pa_sink_set_asyncmsgq(u->sink, u->thread_mq.inq);
+        pa_sink_set_rtpoll(u->sink, u->rtpoll);
+
+        u->sink->flags = PA_SINK_HARDWARE|PA_SINK_LATENCY|PA_SINK_HW_VOLUME_CTRL;
+        u->sink->refresh_volume = 1;
+        u->sink->refresh_mute = 1;
+    } else
+        u->sink = NULL;
+
+    pa_assert(u->source || u->sink);
+
+    u->sig = pa_signal_new(SIGPOLL, sig_callback, u);
+    pa_assert(u->sig);
+    ioctl(u->fd, I_SETSIG, S_MSG);
+
+    if (!(u->thread = pa_thread_new(thread_func, u))) {
+        pa_log("Failed to create thread.");
+        goto fail;
+    }
+
+    /* Read mixer settings */
+    if (u->source)
+        pa_asyncmsgq_send(u->thread_mq.inq, PA_MSGOBJECT(u->source), PA_SOURCE_MESSAGE_GET_VOLUME, &u->source->volume, 0, NULL);
+    if (u->sink) {
+        pa_asyncmsgq_send(u->thread_mq.inq, PA_MSGOBJECT(u->sink), PA_SINK_MESSAGE_GET_VOLUME, &u->sink->volume, 0, NULL);
+        pa_asyncmsgq_send(u->thread_mq.inq, PA_MSGOBJECT(u->sink), PA_SINK_MESSAGE_GET_MUTE, &u->sink->muted, 0, NULL);
+    }
+
+    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)
+        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;
+
+    ioctl(u->fd, I_SETSIG, 0);
+    pa_signal_free(u->sig);
+
+    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->fd >= 0)
+        close(u->fd);
+
+    pa_xfree(u);
+}