#include <pulsecore/core-util.h>
#include <pulsecore/sample-util.h>
#include <pulsecore/log.h>
+#include <pulsecore/macro.h>
+#include <pulsecore/thread.h>
+#include <pulsecore/core-error.h>
#include "alsa-util.h"
#include "module-alsa-source-symdef.h"
"rate=<sample rate> "
"fragments=<number of fragments> "
"fragment_size=<fragment size> "
- "channel_map=<channel map>")
+ "channel_map=<channel map> "
+ "mmap=<enable memory mapping?>")
+
+#define DEFAULT_DEVICE "default"
+#define DEFAULT_NFRAGS 4
+#define DEFAULT_FRAGSIZE_MSEC 25
struct userdata {
+ pa_core *core;
+ pa_module *module;
+ pa_source *source;
+ pa_thread *thread;
+ pa_asyncmsgq *asyncmsgq;
+
snd_pcm_t *pcm_handle;
+
+ pa_alsa_fdlist *mixer_fdl;
snd_mixer_t *mixer_handle;
snd_mixer_elem_t *mixer_elem;
- pa_source *source;
- struct pa_alsa_fdlist *pcm_fdl;
- struct pa_alsa_fdlist *mixer_fdl;
long hw_volume_max, hw_volume_min;
- size_t frame_size, fragment_size;
- pa_memchunk memchunk;
- pa_module *module;
+ size_t frame_size, fragment_size, hwbuf_size;
+ unsigned nfragments;
+
+ char *device_name;
+
+ int use_mmap;
};
static const char* const valid_modargs[] = {
"fragments",
"fragment_size",
"channel_map",
+ "mmap",
NULL
};
-#define DEFAULT_DEVICE "default"
+static int mmap_read(struct userdata *u) {
+ snd_pcm_sframes_t n;
+ int err;
+ const snd_pcm_channel_area_t *areas;
+ snd_pcm_uframes_t offset, frames;
+ int work_done = 0;
+
+ pa_assert(u);
+ pa_assert(u->source);
-static void update_usage(struct userdata *u) {
- pa_module_set_used(u->module, u->source ? pa_source_used_by(u->source) : 0);
-}
+ for (;;) {
+ pa_memchunk chunk;
+ void *p;
+
+ if ((n = snd_pcm_avail_update(u->pcm_handle)) < 0) {
-static void clear_up(struct userdata *u) {
- assert(u);
+ if (n == -EPIPE)
+ pa_log_debug("snd_pcm_avail_update: Buffer underrun!");
+
+ if ((err = snd_pcm_recover(u->pcm_handle, n, 1)) == 0)
+ continue;
- if (u->source) {
- pa_source_disconnect(u->source);
- pa_source_unref(u->source);
- u->source = NULL;
- }
+ if (err == -EAGAIN)
+ return work_done;
+
+ pa_log("snd_pcm_avail_update: %s", snd_strerror(n));
+ return -1;
+ }
- if (u->pcm_fdl)
- pa_alsa_fdlist_free(u->pcm_fdl);
- if (u->mixer_fdl)
- pa_alsa_fdlist_free(u->mixer_fdl);
+/* pa_log("Got request for %i samples", (int) n); */
+
+ if (n <= 0)
+ return work_done;
- u->pcm_fdl = u->mixer_fdl = NULL;
+ frames = n;
+
+ if ((err = snd_pcm_mmap_begin(u->pcm_handle, &areas, &offset, &frames)) < 0) {
+
+ if (err == -EPIPE)
+ pa_log_debug("snd_pcm_mmap_begin: Buffer underrun!");
- if (u->mixer_handle) {
- snd_mixer_close(u->mixer_handle);
- u->mixer_handle = NULL;
- }
+ if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) == 0)
+ continue;
- if (u->pcm_handle) {
- snd_pcm_drop(u->pcm_handle);
- snd_pcm_close(u->pcm_handle);
- u->pcm_handle = NULL;
- }
-}
+ if (err == -EAGAIN)
+ return work_done;
-static int xrun_recovery(struct userdata *u) {
- int ret;
- assert(u);
+ pa_log("Failed to write data to DSP: %s", snd_strerror(err));
+ return -1;
+ }
- pa_log_info("*** ALSA-XRUN (capture) ***");
+ /* Check these are multiples of 8 bit */
+ pa_assert((areas[0].first & 7) == 0);
+ pa_assert((areas[0].step & 7)== 0);
- if ((ret = snd_pcm_prepare(u->pcm_handle)) < 0) {
- pa_log("snd_pcm_prepare() failed: %s", snd_strerror(-ret));
+ /* We assume a single interleaved memory buffer */
+ pa_assert((areas[0].first >> 3) == 0);
+ pa_assert((areas[0].step >> 3) == u->frame_size);
- clear_up(u);
- pa_module_unload_request(u->module);
+ p = (uint8_t*) areas[0].addr + (offset * u->frame_size);
+
+ chunk.memblock = pa_memblock_new_fixed(u->core->mempool, p, frames * u->frame_size, 1);
+ chunk.length = pa_memblock_get_length(chunk.memblock);
+ chunk.index = 0;
- return -1;
- }
+ pa_source_post(u->source, &chunk);
- return 0;
-}
+ /* FIXME: Maybe we can do something to keep this memory block
+ * a little bit longer around? */
+ pa_memblock_unref_fixed(chunk.memblock);
+ if ((err = snd_pcm_mmap_commit(u->pcm_handle, offset, frames)) < 0) {
-static int suspend_recovery(struct userdata *u) {
- int ret;
- assert(u);
+ if (err == -EPIPE)
+ pa_log_debug("snd_pcm_mmap_commit: Buffer underrun!");
+
+ if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) == 0)
+ continue;
+
+ if (err == -EAGAIN)
+ return work_done;
+
+ pa_log("Failed to write data to DSP: %s", snd_strerror(err));
+ return -1;
+ }
- pa_log_info("*** ALSA-SUSPEND (capture) ***");
+ work_done = 1;
- if ((ret = snd_pcm_resume(u->pcm_handle)) < 0) {
- if (ret == -EAGAIN)
- return -1;
+/* pa_log("wrote %i samples", (int) frames); */
+ }
+}
- if (ret != -ENOSYS)
- pa_log("snd_pcm_resume() failed: %s", snd_strerror(-ret));
- else {
- if ((ret = snd_pcm_prepare(u->pcm_handle)) < 0)
- pa_log("snd_pcm_prepare() failed: %s", snd_strerror(-ret));
- }
+static pa_usec_t source_get_latency(struct userdata *u) {
+ pa_usec_t r = 0;
+ snd_pcm_sframes_t frames = 0;
+ int err;
+
+ pa_assert(u);
- if (ret < 0) {
- clear_up(u);
- pa_module_unload_request(u->module);
- return -1;
- }
+ snd_pcm_avail_update(u->pcm_handle);
+
+ if ((err = snd_pcm_delay(u->pcm_handle, &frames)) < 0) {
+ pa_log("Failed to get delay: %s", snd_strerror(err));
+ return 0;
}
- return ret;
+ if (frames > 0)
+ r = pa_bytes_to_usec(frames * u->frame_size, &u->source->sample_spec);
+
+ return r;
}
-static void do_read(struct userdata *u) {
- assert(u);
+static int suspend(struct userdata *u) {
+ pa_assert(u);
+ pa_assert(u->pcm_handle);
- update_usage(u);
+ /* Let's suspend */
+ snd_pcm_close(u->pcm_handle);
+ u->pcm_handle = NULL;
- for (;;) {
- pa_memchunk post_memchunk;
- snd_pcm_sframes_t frames;
- size_t l;
- void *p;
+ pa_log_debug("Device suspended...");
+
+ return 0;
+}
- if (!u->memchunk.memblock) {
- u->memchunk.memblock = pa_memblock_new(u->source->core->mempool, u->memchunk.length = u->fragment_size);
- u->memchunk.index = 0;
- }
+static int unsuspend(struct userdata *u) {
+ pa_sample_spec ss;
+ int err, b;
+ unsigned nfrags;
+ snd_pcm_uframes_t period_size;
- assert(u->memchunk.memblock);
- assert(u->memchunk.length);
- assert(u->memchunk.length % u->frame_size == 0);
+ pa_assert(u);
+ pa_assert(!u->pcm_handle);
- p = pa_memblock_acquire(u->memchunk.memblock);
+ pa_log_debug("Trying resume...");
- if ((frames = snd_pcm_readi(u->pcm_handle, (uint8_t*) p + u->memchunk.index, u->memchunk.length / u->frame_size)) < 0) {
- pa_memblock_release(u->memchunk.memblock);
+ snd_config_update_free_global();
+ if ((err = snd_pcm_open(&u->pcm_handle, u->device_name, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK)) < 0) {
+ pa_log("Error opening PCM device %s: %s", u->device_name, snd_strerror(err));
+ goto fail;
+ }
- if (frames == -EAGAIN)
- return;
+ ss = u->source->sample_spec;
+ nfrags = u->nfragments;
+ period_size = u->fragment_size / u->frame_size;
+ b = u->use_mmap;
+
+ if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, &b)) < 0) {
+ pa_log("Failed to set hardware parameters: %s", snd_strerror(err));
+ goto fail;
+ }
- if (frames == -EPIPE) {
- if (xrun_recovery(u) < 0)
- return;
+ if (b != u->use_mmap) {
+ pa_log_warn("Resume failed, couldn't get original access mode.");
+ goto fail;
+ }
- continue;
- }
+ if (!pa_sample_spec_equal(&ss, &u->source->sample_spec)) {
+ pa_log_warn("Resume failed, couldn't restore original sample settings.");
+ goto fail;
+ }
- if (frames == -ESTRPIPE) {
- if (suspend_recovery(u) < 0)
- return;
+ if (nfrags != u->nfragments || period_size*u->frame_size != u->fragment_size) {
+ pa_log_warn("Resume failed, couldn't restore original fragment settings.");
+ goto fail;
+ }
- continue;
- }
+ snd_pcm_start(u->pcm_handle);
+
+ /* FIXME: We need to reload the volume somehow */
+
+ pa_log_debug("Resumed successfully...");
- pa_log("snd_pcm_readi() failed: %s", snd_strerror(-frames));
+ return 0;
- clear_up(u);
- pa_module_unload_request(u->module);
- return;
- }
- pa_memblock_release(u->memchunk.memblock);
+fail:
+ snd_pcm_close(u->pcm_handle);
+ u->pcm_handle = NULL;
+
+ return -1;
+}
+
+static int source_process_msg(pa_msgobject *o, int code, void *data, pa_memchunk *chunk) {
+ struct userdata *u = PA_SOURCE(o)->userdata;
- l = frames * u->frame_size;
+ switch (code) {
- post_memchunk = u->memchunk;
- post_memchunk.length = l;
+ case PA_SOURCE_MESSAGE_GET_LATENCY: {
+ pa_usec_t r = 0;
- pa_source_post(u->source, &post_memchunk);
+ if (u->pcm_handle)
+ r = source_get_latency(u);
- u->memchunk.index += l;
- u->memchunk.length -= l;
+ *((pa_usec_t*) data) = r;
- if (u->memchunk.length == 0) {
- pa_memblock_unref(u->memchunk.memblock);
- u->memchunk.memblock = NULL;
- u->memchunk.index = u->memchunk.length = 0;
+ break;
}
- break;
- }
-}
+ case PA_SOURCE_MESSAGE_SET_STATE:
-static void fdl_callback(void *userdata) {
- struct userdata *u = userdata;
- assert(u);
+ switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) {
+
+ case PA_SOURCE_SUSPENDED:
+ pa_assert(PA_SOURCE_OPENED(u->source->thread_info.state));
- if (snd_pcm_state(u->pcm_handle) == SND_PCM_STATE_XRUN)
- if (xrun_recovery(u) < 0)
- return;
+ if (suspend(u) < 0)
+ return -1;
+
+ break;
+
+ case PA_SOURCE_IDLE:
+ case PA_SOURCE_RUNNING:
- if (snd_pcm_state(u->pcm_handle) == SND_PCM_STATE_SUSPENDED)
- if (suspend_recovery(u) < 0)
- return;
+ if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
+ if (unsuspend(u) < 0)
+ return -1;
+ }
+
+ break;
- do_read(u);
+ case PA_SOURCE_DISCONNECTED:
+ ;
+ }
+
+ break;
+ }
+
+ return pa_source_process_msg(o, code, data, chunk);
}
static int mixer_callback(snd_mixer_elem_t *elem, unsigned int mask) {
struct userdata *u = snd_mixer_elem_get_callback_private(elem);
- assert(u && u->mixer_handle);
+ pa_assert(u);
+ pa_assert(u->mixer_handle);
if (mask == SND_CTL_EVENT_MASK_REMOVE)
return 0;
if (mask & SND_CTL_EVENT_MASK_VALUE) {
- if (u->source->get_hw_volume)
- u->source->get_hw_volume(u->source);
- if (u->source->get_hw_mute)
- u->source->get_hw_mute(u->source);
-
- pa_subscription_post(u->source->core,
- PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE,
- u->source->index);
+ pa_source_get_volume(u->source);
+ pa_source_get_mute(u->source);
}
return 0;
}
-static pa_usec_t source_get_latency_cb(pa_source *s) {
- struct userdata *u = s->userdata;
- snd_pcm_sframes_t frames;
- assert(s && u && u->source);
-
- if (snd_pcm_delay(u->pcm_handle, &frames) < 0) {
- pa_log("failed to get delay");
- s->get_latency = NULL;
- return 0;
- }
-
- return pa_bytes_to_usec(frames * u->frame_size, &s->sample_spec);
-}
-
-static int source_get_hw_volume_cb(pa_source *s) {
+static int source_get_volume_cb(pa_source *s) {
struct userdata *u = s->userdata;
- long vol;
int err;
int i;
- assert(u && u->mixer_elem);
+ pa_assert(u);
+ pa_assert(u->mixer_elem);
- for (i = 0;i < s->hw_volume.channels;i++) {
- long set_vol;
+ for (i = 0; i < s->sample_spec.channels; i++) {
+ long set_vol, vol;
- assert(snd_mixer_selem_has_capture_channel(u->mixer_elem, i));
+ pa_assert(snd_mixer_selem_has_capture_channel(u->mixer_elem, i));
if ((err = snd_mixer_selem_get_capture_volume(u->mixer_elem, i, &vol)) < 0)
goto fail;
- set_vol = (long) roundf(((float) s->hw_volume.values[i] * (u->hw_volume_max - u->hw_volume_min)) / PA_VOLUME_NORM) + u->hw_volume_min;
+ set_vol = (long) roundf(((float) s->volume.values[i] * (u->hw_volume_max - u->hw_volume_min)) / PA_VOLUME_NORM) + u->hw_volume_min;
/* Try to avoid superfluous volume changes */
if (set_vol != vol)
- s->hw_volume.values[i] = (pa_volume_t) roundf(((float) (vol - u->hw_volume_min) * PA_VOLUME_NORM) / (u->hw_volume_max - u->hw_volume_min));
+ s->volume.values[i] = (pa_volume_t) roundf(((float) (vol - u->hw_volume_min) * PA_VOLUME_NORM) / (u->hw_volume_max - u->hw_volume_min));
}
return 0;
fail:
pa_log_error("Unable to read volume: %s", snd_strerror(err));
- s->get_hw_volume = NULL;
- s->set_hw_volume = NULL;
+
+ s->get_volume = NULL;
+ s->set_volume = NULL;
return -1;
}
-static int source_set_hw_volume_cb(pa_source *s) {
+static int source_set_volume_cb(pa_source *s) {
struct userdata *u = s->userdata;
int err;
- pa_volume_t vol;
int i;
- assert(u && u->mixer_elem);
+ pa_assert(u);
+ pa_assert(u->mixer_elem);
+
+ for (i = 0; i < s->sample_spec.channels; i++) {
+ long alsa_vol;
+ pa_volume_t vol;
- for (i = 0;i < s->hw_volume.channels;i++) {
- assert(snd_mixer_selem_has_capture_channel(u->mixer_elem, i));
+ pa_assert(snd_mixer_selem_has_capture_channel(u->mixer_elem, i));
- vol = s->hw_volume.values[i];
+ vol = s->volume.values[i];
if (vol > PA_VOLUME_NORM)
vol = PA_VOLUME_NORM;
- vol = (long) roundf(((float) vol * (u->hw_volume_max - u->hw_volume_min)) / PA_VOLUME_NORM) + u->hw_volume_min;
+ alsa_vol = (long) roundf(((float) vol * (u->hw_volume_max - u->hw_volume_min)) / PA_VOLUME_NORM) + u->hw_volume_min;
- if ((err = snd_mixer_selem_set_capture_volume(u->mixer_elem, i, vol)) < 0)
+ if ((err = snd_mixer_selem_set_capture_volume(u->mixer_elem, i, alsa_vol)) < 0)
goto fail;
}
fail:
pa_log_error("Unable to set volume: %s", snd_strerror(err));
- s->get_hw_volume = NULL;
- s->set_hw_volume = NULL;
+
+ s->get_volume = NULL;
+ s->set_volume = NULL;
return -1;
}
-static int source_get_hw_mute_cb(pa_source *s) {
+static int source_get_mute_cb(pa_source *s) {
struct userdata *u = s->userdata;
int err, sw;
- assert(u && u->mixer_elem);
+ pa_assert(u);
+ pa_assert(u->mixer_elem);
- err = snd_mixer_selem_get_capture_switch(u->mixer_elem, 0, &sw);
- if (err) {
+ if ((err = snd_mixer_selem_get_capture_switch(u->mixer_elem, 0, &sw)) < 0) {
pa_log_error("Unable to get switch: %s", snd_strerror(err));
- s->get_hw_mute = NULL;
- s->set_hw_mute = NULL;
+
+ s->get_mute = NULL;
+ s->set_mute = NULL;
return -1;
}
- s->hw_muted = !sw;
+ s->muted = !sw;
return 0;
}
-static int source_set_hw_mute_cb(pa_source *s) {
+static int source_set_mute_cb(pa_source *s) {
struct userdata *u = s->userdata;
int err;
- assert(u && u->mixer_elem);
+ pa_assert(u);
+ pa_assert(u->mixer_elem);
- err = snd_mixer_selem_set_capture_switch_all(u->mixer_elem, !s->hw_muted);
- if (err) {
+ if ((err = snd_mixer_selem_set_capture_switch_all(u->mixer_elem, !s->muted)) < 0) {
pa_log_error("Unable to set switch: %s", snd_strerror(err));
- s->get_hw_mute = NULL;
- s->set_hw_mute = NULL;
+
+ s->get_mute = NULL;
+ s->set_mute = NULL;
return -1;
}
return 0;
}
+static void thread_func(void *userdata) {
+ enum {
+ POLLFD_ASYNCQ,
+ POLLFD_ALSA_BASE
+ };
+
+ struct userdata *u = userdata;
+ struct pollfd *pollfd = NULL;
+ int n_alsa_fds, err;
+ unsigned short revents = 0;
+ snd_pcm_status_t *status;
+
+ pa_assert(u);
+ snd_pcm_status_alloca(&status);
+
+ pa_log_debug("Thread starting up");
+
+ if ((n_alsa_fds = snd_pcm_poll_descriptors_count(u->pcm_handle)) < 0) {
+ pa_log("snd_pcm_poll_descriptors_count() failed: %s", snd_strerror(n_alsa_fds));
+ goto fail;
+ }
+
+ pollfd = pa_xnew0(struct pollfd, POLLFD_ALSA_BASE + n_alsa_fds);
+
+ pollfd[POLLFD_ASYNCQ].fd = pa_asyncmsgq_get_fd(u->asyncmsgq);
+ pollfd[POLLFD_ASYNCQ].events = POLLIN;
+
+ if ((err = snd_pcm_poll_descriptors(u->pcm_handle, pollfd+POLLFD_ALSA_BASE, n_alsa_fds)) < 0) {
+ pa_log("snd_pcm_poll_descriptors() failed: %s", snd_strerror(err));
+ goto fail;
+ }
+
+ for (;;) {
+ pa_msgobject *object;
+ int code;
+ void *data;
+ int r;
+ pa_memchunk chunk;
+
+/* pa_log("loop"); */
+
+ /* Check whether there is a message for us to process */
+ if (pa_asyncmsgq_get(u->asyncmsgq, &object, &code, &data, &chunk, 0) == 0) {
+ int ret;
+
+/* pa_log("processing msg"); */
+
+ if (!object && code == PA_MESSAGE_SHUTDOWN) {
+ pa_asyncmsgq_done(u->asyncmsgq, 0);
+ goto finish;
+ }
+
+ ret = pa_asyncmsgq_dispatch(object, code, data, &chunk);
+ pa_asyncmsgq_done(u->asyncmsgq, ret);
+ continue;
+ }
+
+/* pa_log("loop2"); */
+
+ /* Render some data and write it to the dsp */
+
+ if (PA_SOURCE_OPENED(u->source->thread_info.state) && (revents & POLLIN)) {
+ int work_done = 0;
+ pa_assert(u->pcm_handle);
+
+ if (u->use_mmap) {
+
+ if ((work_done = mmap_read(u)) < 0)
+ goto fail;
+
+ } else {
+ ssize_t l;
+
+ snd_pcm_hwsync(u->pcm_handle);
+ if ((err = snd_pcm_status(u->pcm_handle, status)) >= 0)
+ l = snd_pcm_status_get_avail(status) * u->frame_size;
+ else
+ l = u->fragment_size;
+
+ while (l > 0) {
+ void *p;
+ snd_pcm_sframes_t t;
+
+ pa_assert(l > 0);
+
+ chunk.memblock = pa_memblock_new(u->core->mempool, l);
+
+ p = pa_memblock_acquire(chunk.memblock);
+ t = snd_pcm_readi(u->pcm_handle, (uint8_t*) p, l / u->frame_size);
+ pa_memblock_release(chunk.memblock);
+
+/* pa_log("wrote %i bytes of %u (%u)", t*u->frame_size, u->memchunk.length, l); */
+
+ pa_assert(t != 0);
+
+ if (t < 0) {
+ pa_memblock_unref(chunk.memblock);
+
+ if (t == -EPIPE)
+ pa_log_debug("Buffer underrun!");
+
+ if ((t = snd_pcm_recover(u->pcm_handle, t, 1)) == 0)
+ continue;
+
+ if (t == -EAGAIN) {
+ pa_log_debug("EAGAIN");
+ break;
+ } else {
+ pa_log("Failed to read data from DSP: %s", snd_strerror(t));
+ goto fail;
+ }
+
+ } else {
+
+ chunk.index = 0;
+ chunk.length = t * u->frame_size;
+
+ pa_source_post(u->source, &chunk);
+ pa_memblock_unref(chunk.memblock);
+
+ l -= t * u->frame_size;
+
+ work_done = 1;
+ }
+ }
+ }
+
+ revents &= ~POLLIN;
+
+ if (work_done)
+ continue;
+ }
+
+ /* Hmm, nothing to do. Let's sleep */
+ if (pa_asyncmsgq_before_poll(u->asyncmsgq) < 0)
+ continue;
+
+/* pa_log("polling for %i", POLLFD_ALSA_BASE + (PA_SOURCE_OPENED(u->source->thread_info.state) ? n_alsa_fds : 0)); */
+ r = poll(pollfd, POLLFD_ALSA_BASE + (PA_SOURCE_OPENED(u->source->thread_info.state) ? n_alsa_fds : 0), -1);
+ /*pa_log("polling got dsp=%i amq=%i (%i)", r > 0 ? pollfd[POLLFD_DSP].revents : 0, r > 0 ? pollfd[POLLFD_ASYNCQ].revents : 0, r); */
+/* pa_log("poll end"); */
+
+ pa_asyncmsgq_after_poll(u->asyncmsgq);
+
+ if (r < 0) {
+ if (errno == EINTR) {
+ pollfd[POLLFD_ASYNCQ].revents = 0;
+ revents = 0;
+ continue;
+ }
+
+ pa_log("poll() failed: %s", pa_cstrerror(errno));
+ goto fail;
+ }
+
+ pa_assert(r > 0);
+
+ if (PA_SOURCE_OPENED(u->source->thread_info.state)) {
+ if ((err = snd_pcm_poll_descriptors_revents(u->pcm_handle, pollfd + POLLFD_ALSA_BASE, n_alsa_fds, &revents)) < 0) {
+ pa_log("snd_pcm_poll_descriptors_revents() failed: %s", snd_strerror(err));
+ goto fail;
+ }
+
+/* pa_log("got alsa event"); */
+ } else
+ revents = 0;
+
+ pa_assert((pollfd[POLLFD_ASYNCQ].revents & ~POLLIN) == 0);
+ }
+
+fail:
+ /* We have to continue processing messages until we receive the
+ * SHUTDOWN message */
+ pa_asyncmsgq_post(u->core->asyncmsgq, PA_MSGOBJECT(u->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, NULL, NULL);
+ pa_asyncmsgq_wait_for(u->asyncmsgq, PA_MESSAGE_SHUTDOWN);
+
+finish:
+ pa_log_debug("Thread shutting down");
+
+ pa_xfree(pollfd);
+}
+
+
int pa__init(pa_core *c, pa_module*m) {
+
pa_modargs *ma = NULL;
int ret = -1;
struct userdata *u = NULL;
const char *dev;
pa_sample_spec ss;
pa_channel_map map;
- unsigned periods, fragsize;
+ unsigned nfrags, frag_size;
snd_pcm_uframes_t period_size;
size_t frame_size;
snd_pcm_info_t *pcm_info = NULL;
const char *name;
char *name_buf = NULL;
int namereg_fail;
+ int use_mmap = 1, b;
+ pa_assert(c);
+ pa_assert(m);
+
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
- pa_log("failed to parse module arguments");
+ pa_log("Failed to parse module arguments");
goto fail;
}
ss = c->default_sample_spec;
if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_ALSA) < 0) {
- pa_log("failed to parse sample specification");
+ pa_log("Failed to parse sample specification");
goto fail;
}
frame_size = pa_frame_size(&ss);
/* Fix latency to 100ms */
- periods = 12;
- fragsize = pa_bytes_per_second(&ss)/128;
+ nfrags = DEFAULT_NFRAGS;
+ frag_size = pa_usec_to_bytes(DEFAULT_FRAGSIZE_MSEC*1000, &ss);
+ if (frag_size <= 0)
+ frag_size = frame_size;
- if (pa_modargs_get_value_u32(ma, "fragments", &periods) < 0 || pa_modargs_get_value_u32(ma, "fragment_size", &fragsize) < 0) {
- pa_log("failed to parse buffer metrics");
+ if (pa_modargs_get_value_u32(ma, "fragments", &nfrags) < 0 || pa_modargs_get_value_u32(ma, "fragment_size", &frag_size) < 0) {
+ pa_log("Failed to parse buffer metrics");
goto fail;
}
- period_size = fragsize/frame_size;
+ period_size = frag_size/frame_size;
+ if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
+ pa_log("Failed to parse mmap argument.");
+ goto fail;
+ }
+
u = pa_xnew0(struct userdata, 1);
- m->userdata = u;
+ u->core = c;
u->module = m;
+ m->userdata = u;
+ u->use_mmap = use_mmap;
+ pa_assert_se(u->asyncmsgq = pa_asyncmsgq_new(0));
snd_config_update_free_global();
if ((err = snd_pcm_open(&u->pcm_handle, dev = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK)) < 0) {
goto fail;
}
+ u->device_name = pa_xstrdup(dev);
+
if ((err = snd_pcm_info_malloc(&pcm_info)) < 0 ||
(err = snd_pcm_info(u->pcm_handle, pcm_info)) < 0) {
pa_log("Error fetching PCM info: %s", snd_strerror(err));
goto fail;
}
- if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &periods, &period_size)) < 0) {
+ b = use_mmap;
+ if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, &b)) < 0) {
pa_log("Failed to set hardware parameters: %s", snd_strerror(err));
goto fail;
}
+ if (use_mmap && !b) {
+ pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
+ u->use_mmap = use_mmap = b;
+ }
+
+ if (u->use_mmap)
+ pa_log_info("Successfully enabled mmap() mode.");
+
+ /* ALSA might tweak the sample spec, so recalculate the frame size */
+ frame_size = pa_frame_size(&ss);
+
if (ss.channels != map.channels)
/* Seems ALSA didn't like the channel number, so let's fix the channel map */
pa_channel_map_init_auto(&map, ss.channels, PA_CHANNEL_MAP_ALSA);
- if ((err = snd_mixer_open(&u->mixer_handle, 0)) < 0) {
+ if ((err = snd_mixer_open(&u->mixer_handle, 0)) < 0)
pa_log("Error opening mixer: %s", snd_strerror(err));
- goto fail;
- }
-
- if ((pa_alsa_prepare_mixer(u->mixer_handle, dev) < 0) ||
- !(u->mixer_elem = pa_alsa_find_elem(u->mixer_handle, "Capture", "Mic"))) {
- snd_mixer_close(u->mixer_handle);
- u->mixer_handle = NULL;
+ else {
+
+ if ((pa_alsa_prepare_mixer(u->mixer_handle, dev) < 0) ||
+ !(u->mixer_elem = pa_alsa_find_elem(u->mixer_handle, "Capture", "Mic"))) {
+ snd_mixer_close(u->mixer_handle);
+ u->mixer_handle = NULL;
+ }
}
if ((name = pa_modargs_get_value(ma, "source_name", NULL)))
namereg_fail = 0;
}
- if (!(u->source = pa_source_new(c, __FILE__, name, namereg_fail, &ss, &map))) {
+ u->source = pa_source_new(c, __FILE__, name, namereg_fail, &ss, &map);
+ pa_xfree(name_buf);
+
+ if (!u->source) {
pa_log("Failed to create source object");
goto fail;
}
- u->source->is_hardware = 1;
+ u->source->parent.process_msg = source_process_msg;
u->source->userdata = u;
- u->source->get_latency = source_get_latency_cb;
+
+ pa_source_set_module(u->source, m);
+ pa_source_set_asyncmsgq(u->source, u->asyncmsgq);
+ pa_source_set_description(u->source, t = pa_sprintf_malloc(
+ "ALSA PCM on %s (%s)",
+ dev,
+ snd_pcm_info_get_name(pcm_info)));
+ pa_xfree(t);
+
+ u->source->is_hardware = 1;
+
+ u->frame_size = frame_size;
+ u->fragment_size = frag_size = period_size * frame_size;
+ u->nfragments = nfrags;
+ u->hwbuf_size = u->fragment_size * nfrags;
+
+ pa_log_info("Using %u fragments of size %lu bytes.", nfrags, (long unsigned) u->fragment_size);
+
if (u->mixer_handle) {
assert(u->mixer_elem);
+
if (snd_mixer_selem_has_capture_volume(u->mixer_elem)) {
int i;
}
if (i == ss.channels) {
- u->source->get_hw_volume = source_get_hw_volume_cb;
- u->source->set_hw_volume = source_set_hw_volume_cb;
- snd_mixer_selem_get_capture_volume_range(
- u->mixer_elem, &u->hw_volume_min, &u->hw_volume_max);
+ u->source->get_volume = source_get_volume_cb;
+ u->source->set_volume = source_set_volume_cb;
+ snd_mixer_selem_get_capture_volume_range(u->mixer_elem, &u->hw_volume_min, &u->hw_volume_max);
}
}
+
if (snd_mixer_selem_has_capture_switch(u->mixer_elem)) {
- u->source->get_hw_mute = source_get_hw_mute_cb;
- u->source->set_hw_mute = source_set_hw_mute_cb;
+ u->source->get_mute = source_get_mute_cb;
+ u->source->set_mute = source_set_mute_cb;
}
- }
- pa_source_set_owner(u->source, m);
- pa_source_set_description(u->source, t = pa_sprintf_malloc("ALSA PCM on %s (%s)", dev, snd_pcm_info_get_name(pcm_info)));
- pa_xfree(t);
-
- u->pcm_fdl = pa_alsa_fdlist_new();
- assert(u->pcm_fdl);
- if (pa_alsa_fdlist_init_pcm(u->pcm_fdl, u->pcm_handle, c->mainloop, fdl_callback, u) < 0) {
- pa_log("failed to initialise file descriptor monitoring");
- goto fail;
- }
- if (u->mixer_handle) {
u->mixer_fdl = pa_alsa_fdlist_new();
- assert(u->mixer_fdl);
- if (pa_alsa_fdlist_init_mixer(u->mixer_fdl, u->mixer_handle, c->mainloop) < 0) {
+
+ if (pa_alsa_fdlist_set_mixer(u->mixer_fdl, u->mixer_handle, c->mainloop) < 0) {
pa_log("failed to initialise file descriptor monitoring");
goto fail;
}
+
snd_mixer_elem_set_callback(u->mixer_elem, mixer_callback);
snd_mixer_elem_set_callback_private(u->mixer_elem, u);
} else
u->mixer_fdl = NULL;
- u->frame_size = frame_size;
- u->fragment_size = period_size * frame_size;
-
- pa_log_info("using %u fragments of size %lu bytes.", periods, (long unsigned) u->fragment_size);
-
- u->memchunk.memblock = NULL;
- u->memchunk.index = u->memchunk.length = 0;
+ if (!(u->thread = pa_thread_new(thread_func, u))) {
+ pa_log("Failed to create thread.");
+ goto fail;
+ }
+ /* Get initial mixer settings */
+ if (u->source->get_volume)
+ u->source->get_volume(u->source);
+ if (u->source->get_mute)
+ u->source->get_mute(u->source);
snd_pcm_start(u->pcm_handle);
-
+
ret = 0;
- /* Get initial mixer settings */
- if (u->source->get_hw_volume)
- u->source->get_hw_volume(u->source);
- if (u->source->get_hw_mute)
- u->source->get_hw_mute(u->source);
-
finish:
- pa_xfree(name_buf);
if (ma)
- pa_modargs_free(ma);
-
+ pa_modargs_free(ma);
+
if (pcm_info)
snd_pcm_info_free(pcm_info);
void pa__done(pa_core *c, pa_module*m) {
struct userdata *u;
- assert(c && m);
+
+ pa_assert(c);
+ pa_assert(m);
if (!(u = m->userdata))
return;
- clear_up(u);
+ if (u->source)
+ pa_source_disconnect(u->source);
+
+ if (u->thread) {
+ pa_asyncmsgq_send(u->asyncmsgq, NULL, PA_MESSAGE_SHUTDOWN, NULL, NULL);
+ pa_thread_free(u->thread);
+ }
+
+ if (u->asyncmsgq)
+ pa_asyncmsgq_free(u->asyncmsgq);
- if (u->memchunk.memblock)
- pa_memblock_unref(u->memchunk.memblock);
+ if (u->source)
+ pa_source_unref(u->source);
+ if (u->mixer_fdl)
+ pa_alsa_fdlist_free(u->mixer_fdl);
+
+ if (u->mixer_handle)
+ snd_mixer_close(u->mixer_handle);
+
+ if (u->pcm_handle) {
+ snd_pcm_drop(u->pcm_handle);
+ snd_pcm_close(u->pcm_handle);
+ }
+
+ pa_xfree(u->device_name);
pa_xfree(u);
+
+ snd_config_update_free_global();
}