-/* $Id$ */
-
/***
This file is part of PulseAudio.
-
+
+ Copyright 2004-2008 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 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
#include <config.h>
#endif
-#include <assert.h>
#include <stdio.h>
-#ifdef HAVE_SYS_POLL_H
-#include <sys/poll.h>
-#else
-#include "poll.h"
-#endif
-
#include <asoundlib.h>
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+#include <valgrind/memcheck.h>
+#endif
+
#include <pulse/xmalloc.h>
+#include <pulse/util.h>
+#include <pulse/timeval.h>
#include <pulsecore/core-error.h>
#include <pulsecore/core.h>
#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 <pulsecore/thread-mq.h>
+#include <pulsecore/rtpoll.h>
+#include <pulsecore/time-smoother.h>
+#include <pulsecore/rtclock.h>
#include "alsa-util.h"
#include "module-alsa-source-symdef.h"
-PA_MODULE_AUTHOR("Lennart Poettering")
-PA_MODULE_DESCRIPTION("ALSA Source")
-PA_MODULE_VERSION(PACKAGE_VERSION)
+PA_MODULE_AUTHOR("Lennart Poettering");
+PA_MODULE_DESCRIPTION("ALSA Source");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(FALSE);
PA_MODULE_USAGE(
"source_name=<name for the source> "
"device=<ALSA device> "
+ "device_id=<ALSA card index> "
"format=<sample format> "
- "channels=<number of channels> "
"rate=<sample rate> "
+ "channels=<number of channels> "
+ "channel_map=<channel map> "
"fragments=<number of fragments> "
"fragment_size=<fragment size> "
- "channel_map=<channel map>")
-
-struct userdata {
- snd_pcm_t *pcm_handle;
- 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;
-};
+ "mmap=<enable memory mapping?> "
+ "tsched=<enable system timer based scheduling mode?> "
+ "tsched_buffer_size=<buffer size when using timer based scheduling> "
+ "tsched_buffer_watermark=<upper fill watermark>");
static const char* const valid_modargs[] = {
- "device",
"source_name",
- "channels",
- "rate",
+ "device",
+ "device_id",
"format",
+ "rate",
+ "channels",
+ "channel_map",
"fragments",
"fragment_size",
- "channel_map",
+ "mmap",
+ "tsched",
+ "tsched_buffer_size",
+ "tsched_buffer_watermark",
NULL
};
#define DEFAULT_DEVICE "default"
+#define DEFAULT_TSCHED_BUFFER_USEC (2*PA_USEC_PER_SEC) /* 2s */
+#define DEFAULT_TSCHED_WATERMARK_USEC (20*PA_USEC_PER_MSEC) /* 20ms */
+#define TSCHED_MIN_SLEEP_USEC (3*PA_USEC_PER_MSEC) /* 3ms */
+#define TSCHED_MIN_WAKEUP_USEC (3*PA_USEC_PER_MSEC) /* 3ms */
+
+struct userdata {
+ pa_core *core;
+ pa_module *module;
+ pa_source *source;
+
+ pa_thread *thread;
+ pa_thread_mq thread_mq;
+ pa_rtpoll *rtpoll;
+
+ snd_pcm_t *pcm_handle;
+
+ pa_alsa_fdlist *mixer_fdl;
+ snd_mixer_t *mixer_handle;
+ snd_mixer_elem_t *mixer_elem;
+ long hw_volume_max, hw_volume_min;
+ long hw_dB_max, hw_dB_min;
+ pa_bool_t hw_dB_supported;
+ pa_bool_t mixer_seperate_channels;
+
+ pa_cvolume hardware_volume;
+
+ size_t frame_size, fragment_size, hwbuf_size, tsched_watermark;
+ unsigned nfragments;
+
+ char *device_name;
+
+ pa_bool_t use_mmap, use_tsched;
+
+ pa_rtpoll_item *alsa_rtpoll_item;
+
+ snd_mixer_selem_channel_id_t mixer_map[SND_MIXER_SCHN_LAST];
+
+ pa_smoother *smoother;
+ int64_t frame_index;
-static void update_usage(struct userdata *u) {
- pa_module_set_used(u->module,
- (u->source ? pa_idxset_size(u->source->outputs) : 0));
+ snd_pcm_sframes_t hwbuf_unused_frames;
+};
+
+static void fix_tsched_watermark(struct userdata *u) {
+ size_t max_use;
+ size_t min_sleep, min_wakeup;
+ pa_assert(u);
+
+ max_use = u->hwbuf_size - (size_t) u->hwbuf_unused_frames * u->frame_size;
+
+ min_sleep = pa_usec_to_bytes(TSCHED_MIN_SLEEP_USEC, &u->source->sample_spec);
+ min_wakeup = pa_usec_to_bytes(TSCHED_MIN_WAKEUP_USEC, &u->source->sample_spec);
+
+ if (min_sleep > max_use/2)
+ min_sleep = pa_frame_align(max_use/2, &u->source->sample_spec);
+ if (min_sleep < u->frame_size)
+ min_sleep = u->frame_size;
+
+ if (min_wakeup > max_use/2)
+ min_wakeup = pa_frame_align(max_use/2, &u->source->sample_spec);
+ if (min_wakeup < u->frame_size)
+ min_wakeup = u->frame_size;
+
+ if (u->tsched_watermark > max_use-min_sleep)
+ u->tsched_watermark = max_use-min_sleep;
+
+ if (u->tsched_watermark < min_wakeup)
+ u->tsched_watermark = min_wakeup;
}
-static void clear_up(struct userdata *u) {
- assert(u);
-
- if (u->source) {
- pa_source_disconnect(u->source);
- pa_source_unref(u->source);
- u->source = NULL;
- }
-
- if (u->pcm_fdl)
- pa_alsa_fdlist_free(u->pcm_fdl);
- if (u->mixer_fdl)
- pa_alsa_fdlist_free(u->mixer_fdl);
+static pa_usec_t hw_sleep_time(struct userdata *u, pa_usec_t *sleep_usec, pa_usec_t*process_usec) {
+ pa_usec_t wm, usec;
- u->pcm_fdl = u->mixer_fdl = NULL;
+ pa_assert(u);
- if (u->mixer_handle) {
- snd_mixer_close(u->mixer_handle);
- u->mixer_handle = NULL;
- }
-
- if (u->pcm_handle) {
- snd_pcm_drop(u->pcm_handle);
- snd_pcm_close(u->pcm_handle);
- u->pcm_handle = NULL;
+ usec = pa_source_get_requested_latency_within_thread(u->source);
+
+ if (usec == (pa_usec_t) -1)
+ usec = pa_bytes_to_usec(u->hwbuf_size, &u->source->sample_spec);
+
+/* pa_log_debug("hw buffer time: %u ms", (unsigned) (usec / PA_USEC_PER_MSEC)); */
+
+ wm = pa_bytes_to_usec(u->tsched_watermark, &u->source->sample_spec);
+
+ if (usec >= wm) {
+ *sleep_usec = usec - wm;
+ *process_usec = wm;
+ } else
+ *process_usec = *sleep_usec = usec /= 2;
+
+/* pa_log_debug("after watermark: %u ms", (unsigned) (*sleep_usec / PA_USEC_PER_MSEC)); */
+
+ return usec;
+}
+
+static int try_recover(struct userdata *u, const char *call, int err) {
+ pa_assert(u);
+ pa_assert(call);
+ pa_assert(err < 0);
+
+ pa_log_debug("%s: %s", call, snd_strerror(err));
+
+ pa_assert(err != -EAGAIN);
+
+ if (err == -EPIPE)
+ pa_log_debug("%s: Buffer overrun!", call);
+
+ if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) == 0) {
+ snd_pcm_start(u->pcm_handle);
+ return 0;
}
+
+ pa_log("%s: %s", call, snd_strerror(err));
+ return -1;
}
-static int xrun_recovery(struct userdata *u) {
- int ret;
- assert(u);
+static size_t check_left_to_record(struct userdata *u, snd_pcm_sframes_t n) {
+ size_t left_to_record;
+ size_t rec_space = u->hwbuf_size - (size_t) u->hwbuf_unused_frames*u->frame_size;
- pa_log_info(__FILE__": *** ALSA-XRUN (capture) ***");
-
- if ((ret = snd_pcm_prepare(u->pcm_handle)) < 0) {
- pa_log(__FILE__": snd_pcm_prepare() failed: %s", snd_strerror(-ret));
+ if ((size_t) n*u->frame_size < rec_space)
+ left_to_record = rec_space - ((size_t) n*u->frame_size);
+ else
+ left_to_record = 0;
- clear_up(u);
- pa_module_unload_request(u->module);
+ if (left_to_record > 0) {
+/* pa_log_debug("%0.2f ms left to record", (double) pa_bytes_to_usec(left_to_record, &u->source->sample_spec) / PA_USEC_PER_MSEC); */
+ } else {
+ pa_log_info("Overrun!");
- return -1;
+ if (u->use_tsched) {
+ size_t old_watermark = u->tsched_watermark;
+
+ u->tsched_watermark *= 2;
+ fix_tsched_watermark(u);
+
+ if (old_watermark != u->tsched_watermark)
+ pa_log_notice("Increasing wakeup watermark to %0.2f ms",
+ (double) pa_bytes_to_usec(u->tsched_watermark, &u->source->sample_spec) / PA_USEC_PER_MSEC);
+ }
}
- return 0;
+ return left_to_record;
}
-static void do_read(struct userdata *u) {
- assert(u);
+static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled) {
+ int work_done = 0;
+ pa_usec_t max_sleep_usec = 0, process_usec = 0;
+ size_t left_to_record;
+
+ pa_assert(u);
+ pa_source_assert_ref(u->source);
+
+ if (u->use_tsched)
+ hw_sleep_time(u, &max_sleep_usec, &process_usec);
- update_usage(u);
-
for (;;) {
- pa_memchunk post_memchunk;
- snd_pcm_sframes_t frames;
- size_t l;
-
- if (!u->memchunk.memblock) {
- u->memchunk.memblock = pa_memblock_new(u->memchunk.length = u->fragment_size, u->source->core->memblock_stat);
- u->memchunk.index = 0;
+ snd_pcm_sframes_t n;
+ int r;
+
+ snd_pcm_hwsync(u->pcm_handle);
+
+ if (PA_UNLIKELY((n = pa_alsa_safe_avail_update(u->pcm_handle, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
+
+ if ((r = try_recover(u, "snd_pcm_avail_update", (int) n)) == 0)
+ continue;
+
+ return r;
+ }
+
+ left_to_record = check_left_to_record(u, n);
+
+ if (u->use_tsched)
+ if (!polled &&
+ pa_bytes_to_usec(left_to_record, &u->source->sample_spec) > process_usec+max_sleep_usec/2)
+ break;
+
+ if (PA_UNLIKELY(n <= 0)) {
+
+ if (polled)
+ pa_log("ALSA woke us up to read new data from the device, but there was actually nothing to read! "
+ "Most likely this is an ALSA driver bug. Please report this issue to the PulseAudio device.");
+
+ break;
+ }
+
+ polled = FALSE;
+
+ for (;;) {
+ int err;
+ const snd_pcm_channel_area_t *areas;
+ snd_pcm_uframes_t offset, frames = (snd_pcm_uframes_t) n;
+ pa_memchunk chunk;
+ void *p;
+ snd_pcm_sframes_t sframes;
+
+/* pa_log_debug("%lu frames to read", (unsigned long) frames); */
+
+ if (PA_UNLIKELY((err = pa_alsa_safe_mmap_begin(u->pcm_handle, &areas, &offset, &frames, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
+
+ if ((r = try_recover(u, "snd_pcm_mmap_begin", err)) == 0)
+ continue;
+
+ return r;
+ }
+
+ /* Make sure that if these memblocks need to be copied they will fit into one slot */
+ if (frames > pa_mempool_block_size_max(u->source->core->mempool)/u->frame_size)
+ frames = pa_mempool_block_size_max(u->source->core->mempool)/u->frame_size;
+
+ /* Check these are multiples of 8 bit */
+ pa_assert((areas[0].first & 7) == 0);
+ pa_assert((areas[0].step & 7)== 0);
+
+ /* We assume a single interleaved memory buffer */
+ pa_assert((areas[0].first >> 3) == 0);
+ pa_assert((areas[0].step >> 3) == u->frame_size);
+
+ p = (uint8_t*) areas[0].addr + (offset * u->frame_size);
+
+ chunk.memblock = pa_memblock_new_fixed(u->core->mempool, p, frames * u->frame_size, TRUE);
+ chunk.length = pa_memblock_get_length(chunk.memblock);
+ chunk.index = 0;
+
+ pa_source_post(u->source, &chunk);
+ pa_memblock_unref_fixed(chunk.memblock);
+
+ if (PA_UNLIKELY((sframes = snd_pcm_mmap_commit(u->pcm_handle, offset, frames)) < 0)) {
+
+ if ((r = try_recover(u, "snd_pcm_mmap_commit", (int) sframes)) == 0)
+ continue;
+
+ return r;
+ }
+
+ work_done = 1;
+
+ u->frame_index += (int64_t) frames;
+
+/* pa_log_debug("read %lu frames", (unsigned long) frames); */
+
+ if (frames >= (snd_pcm_uframes_t) n)
+ break;
+
+ n -= (snd_pcm_sframes_t) frames;
}
-
- assert(u->memchunk.memblock);
- assert(u->memchunk.length);
- assert(u->memchunk.memblock->data);
- assert(u->memchunk.memblock->length);
- assert(u->memchunk.length % u->frame_size == 0);
-
- if ((frames = snd_pcm_readi(u->pcm_handle, (uint8_t*) u->memchunk.memblock->data + u->memchunk.index, u->memchunk.length / u->frame_size)) < 0) {
- if (frames == -EAGAIN)
- return;
-
- if (frames == -EPIPE) {
- if (xrun_recovery(u) < 0)
- return;
-
+ }
+
+ *sleep_usec = pa_bytes_to_usec(left_to_record, &u->source->sample_spec) - process_usec;
+ return work_done;
+}
+
+static int unix_read(struct userdata *u, pa_usec_t *sleep_usec, pa_bool_t polled) {
+ int work_done = 0;
+ pa_usec_t max_sleep_usec = 0, process_usec = 0;
+ size_t left_to_record;
+
+ pa_assert(u);
+ pa_source_assert_ref(u->source);
+
+ if (u->use_tsched)
+ hw_sleep_time(u, &max_sleep_usec, &process_usec);
+
+ for (;;) {
+ snd_pcm_sframes_t n;
+ int r;
+
+ snd_pcm_hwsync(u->pcm_handle);
+
+ if (PA_UNLIKELY((n = pa_alsa_safe_avail_update(u->pcm_handle, u->hwbuf_size, &u->source->sample_spec)) < 0)) {
+
+ if ((r = try_recover(u, "snd_pcm_avail_update", (int) n)) == 0)
continue;
+
+ return r;
+ }
+
+ left_to_record = check_left_to_record(u, n);
+
+ if (u->use_tsched)
+ if (!polled &&
+ pa_bytes_to_usec(left_to_record, &u->source->sample_spec) > process_usec+max_sleep_usec/2)
+ break;
+
+ if (PA_UNLIKELY(n <= 0)) {
+
+ if (polled)
+ pa_log("ALSA woke us up to read new data from the device, but there was actually nothing to read! "
+ "Most likely this is an ALSA driver bug. Please report this issue to the PulseAudio developers.");
+
+ return work_done;
+ }
+
+ polled = FALSE;
+
+ for (;;) {
+ void *p;
+ snd_pcm_sframes_t frames;
+ pa_memchunk chunk;
+
+ chunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1);
+
+ frames = (snd_pcm_sframes_t) (pa_memblock_get_length(chunk.memblock) / u->frame_size);
+
+ if (frames > n)
+ frames = n;
+
+/* pa_log_debug("%lu frames to read", (unsigned long) n); */
+
+ p = pa_memblock_acquire(chunk.memblock);
+ frames = snd_pcm_readi(u->pcm_handle, (uint8_t*) p, (snd_pcm_uframes_t) frames);
+ pa_memblock_release(chunk.memblock);
+
+ pa_assert(frames != 0);
+
+ if (PA_UNLIKELY(frames < 0)) {
+ pa_memblock_unref(chunk.memblock);
+
+ if ((r = try_recover(u, "snd_pcm_readi", (int) (frames))) == 0)
+ continue;
+
+ return r;
}
- pa_log(__FILE__": snd_pcm_readi() failed: %s", snd_strerror(-frames));
+ chunk.index = 0;
+ chunk.length = (size_t) frames * u->frame_size;
+
+ pa_source_post(u->source, &chunk);
+ pa_memblock_unref(chunk.memblock);
+
+ work_done = 1;
- clear_up(u);
- pa_module_unload_request(u->module);
- return;
+ u->frame_index += frames;
+
+/* pa_log_debug("read %lu frames", (unsigned long) frames); */
+
+ if (frames >= n)
+ break;
+
+ n -= frames;
}
+ }
- l = frames * u->frame_size;
-
- post_memchunk = u->memchunk;
- post_memchunk.length = l;
+ *sleep_usec = pa_bytes_to_usec(left_to_record, &u->source->sample_spec) - process_usec;
+ return work_done;
+}
+
+static void update_smoother(struct userdata *u) {
+ snd_pcm_sframes_t delay = 0;
+ int64_t frames;
+ int err;
+ pa_usec_t now1, now2;
+
+ pa_assert(u);
+ pa_assert(u->pcm_handle);
+
+ /* Let's update the time smoother */
+
+ snd_pcm_hwsync(u->pcm_handle);
+ snd_pcm_avail_update(u->pcm_handle);
+
+ if (PA_UNLIKELY((err = snd_pcm_delay(u->pcm_handle, &delay)) < 0)) {
+ pa_log_warn("Failed to get delay: %s", snd_strerror(err));
+ return;
+ }
+
+ frames = u->frame_index + delay;
+
+ now1 = pa_rtclock_usec();
+ now2 = pa_bytes_to_usec((uint64_t) frames * u->frame_size, &u->source->sample_spec);
+
+ pa_smoother_put(u->smoother, now1, now2);
+}
+
+static pa_usec_t source_get_latency(struct userdata *u) {
+ pa_usec_t r = 0;
+ int64_t delay;
+ pa_usec_t now1, now2;
+
+ pa_assert(u);
+
+ now1 = pa_rtclock_usec();
+ now2 = pa_smoother_get(u->smoother, now1);
+
+ delay = (int64_t) now2 - (int64_t) pa_bytes_to_usec((uint64_t) u->frame_index * u->frame_size, &u->source->sample_spec);
+
+ if (delay > 0)
+ r = (pa_usec_t) delay;
+
+ return r;
+}
+
+static int build_pollfd(struct userdata *u) {
+ pa_assert(u);
+ pa_assert(u->pcm_handle);
+
+ if (u->alsa_rtpoll_item)
+ pa_rtpoll_item_free(u->alsa_rtpoll_item);
+
+ if (!(u->alsa_rtpoll_item = pa_alsa_build_pollfd(u->pcm_handle, u->rtpoll)))
+ return -1;
+
+ return 0;
+}
+
+static int suspend(struct userdata *u) {
+ pa_assert(u);
+ pa_assert(u->pcm_handle);
+
+ pa_smoother_pause(u->smoother, pa_rtclock_usec());
+
+ /* Let's suspend */
+ snd_pcm_close(u->pcm_handle);
+ u->pcm_handle = NULL;
+
+ if (u->alsa_rtpoll_item) {
+ pa_rtpoll_item_free(u->alsa_rtpoll_item);
+ u->alsa_rtpoll_item = NULL;
+ }
- pa_source_post(u->source, &post_memchunk);
+ pa_log_info("Device suspended...");
- u->memchunk.index += l;
- u->memchunk.length -= l;
-
- if (u->memchunk.length == 0) {
- pa_memblock_unref(u->memchunk.memblock);
- u->memchunk.memblock = NULL;
- u->memchunk.index = u->memchunk.length = 0;
+ return 0;
+}
+
+static int update_sw_params(struct userdata *u) {
+ snd_pcm_uframes_t avail_min;
+ int err;
+
+ pa_assert(u);
+
+ /* Use the full buffer if noone asked us for anything specific */
+ u->hwbuf_unused_frames = 0;
+
+ if (u->use_tsched) {
+ pa_usec_t latency;
+
+ if ((latency = pa_source_get_requested_latency_within_thread(u->source)) != (pa_usec_t) -1) {
+ size_t b;
+
+ pa_log_debug("latency set to %0.2fms", (double) latency / PA_USEC_PER_MSEC);
+
+ b = pa_usec_to_bytes(latency, &u->source->sample_spec);
+
+ /* We need at least one sample in our buffer */
+
+ if (PA_UNLIKELY(b < u->frame_size))
+ b = u->frame_size;
+
+ u->hwbuf_unused_frames = (snd_pcm_sframes_t)
+ (PA_LIKELY(b < u->hwbuf_size) ?
+ ((u->hwbuf_size - b) / u->frame_size) : 0);
}
-
- break;
+
+ fix_tsched_watermark(u);
+ }
+
+ pa_log_debug("hwbuf_unused_frames=%lu", (unsigned long) u->hwbuf_unused_frames);
+
+ avail_min = 1;
+
+ if (u->use_tsched) {
+ pa_usec_t sleep_usec, process_usec;
+
+ hw_sleep_time(u, &sleep_usec, &process_usec);
+ avail_min += pa_usec_to_bytes(sleep_usec, &u->source->sample_spec);
+ }
+
+ pa_log_debug("setting avail_min=%lu", (unsigned long) avail_min);
+
+ if ((err = pa_alsa_set_sw_params(u->pcm_handle, avail_min)) < 0) {
+ pa_log("Failed to set software parameters: %s", snd_strerror(err));
+ return err;
}
+
+ return 0;
}
-static void fdl_callback(void *userdata) {
- struct userdata *u = userdata;
- assert(u);
+static int unsuspend(struct userdata *u) {
+ pa_sample_spec ss;
+ int err;
+ pa_bool_t b, d;
+ unsigned nfrags;
+ snd_pcm_uframes_t period_size;
+
+ pa_assert(u);
+ pa_assert(!u->pcm_handle);
+
+ pa_log_info("Trying resume...");
+
+ snd_config_update_free_global();
- if (snd_pcm_state(u->pcm_handle) == SND_PCM_STATE_XRUN)
- if (xrun_recovery(u) < 0)
- return;
+ if ((err = snd_pcm_open(&u->pcm_handle, u->device_name, SND_PCM_STREAM_CAPTURE,
+ /*SND_PCM_NONBLOCK|*/
+ SND_PCM_NO_AUTO_RESAMPLE|
+ SND_PCM_NO_AUTO_CHANNELS|
+ SND_PCM_NO_AUTO_FORMAT)) < 0) {
+ pa_log("Error opening PCM device %s: %s", u->device_name, snd_strerror(err));
+ goto fail;
+ }
+
+ ss = u->source->sample_spec;
+ nfrags = u->nfragments;
+ period_size = u->fragment_size / u->frame_size;
+ b = u->use_mmap;
+ d = u->use_tsched;
+
+ if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, u->hwbuf_size / u->frame_size, &b, &d, TRUE)) < 0) {
+ pa_log("Failed to set hardware parameters: %s", snd_strerror(err));
+ goto fail;
+ }
+
+ if (b != u->use_mmap || d != u->use_tsched) {
+ pa_log_warn("Resume failed, couldn't get original access mode.");
+ goto fail;
+ }
+
+ if (!pa_sample_spec_equal(&ss, &u->source->sample_spec)) {
+ pa_log_warn("Resume failed, couldn't restore original sample settings.");
+ goto fail;
+ }
+
+ if (nfrags != u->nfragments || period_size*u->frame_size != u->fragment_size) {
+ pa_log_warn("Resume failed, couldn't restore original fragment settings. (Old: %lu*%lu, New %lu*%lu)",
+ (unsigned long) u->nfragments, (unsigned long) u->fragment_size,
+ (unsigned long) nfrags, period_size * u->frame_size);
+ goto fail;
+ }
+
+ if (update_sw_params(u) < 0)
+ goto fail;
+
+ if (build_pollfd(u) < 0)
+ goto fail;
+
+ /* FIXME: We need to reload the volume somehow */
+
+ snd_pcm_start(u->pcm_handle);
+ pa_smoother_resume(u->smoother, pa_rtclock_usec());
+
+ pa_log_info("Resumed successfully...");
+
+ return 0;
+
+fail:
+ if (u->pcm_handle) {
+ snd_pcm_close(u->pcm_handle);
+ u->pcm_handle = NULL;
+ }
- do_read(u);
+ return -1;
+}
+
+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;
+
+ switch (code) {
+
+ case PA_SOURCE_MESSAGE_GET_LATENCY: {
+ pa_usec_t r = 0;
+
+ if (u->pcm_handle)
+ r = 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 (suspend(u) < 0)
+ return -1;
+
+ break;
+
+ case PA_SOURCE_IDLE:
+ case PA_SOURCE_RUNNING:
+
+ if (u->source->thread_info.state == PA_SOURCE_INIT) {
+ if (build_pollfd(u) < 0)
+ return -1;
+
+ snd_pcm_start(u->pcm_handle);
+ }
+
+ if (u->source->thread_info.state == PA_SOURCE_SUSPENDED) {
+ if (unsuspend(u) < 0)
+ return -1;
+ }
+
+ break;
+
+ case PA_SOURCE_UNLINKED:
+ case PA_SOURCE_INIT:
+ ;
+ }
+
+ break;
+ }
+
+ return pa_source_process_msg(o, code, data, offset, 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, TRUE);
+ pa_source_get_mute(u->source, TRUE);
}
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);
+static pa_volume_t from_alsa_volume(struct userdata *u, long alsa_vol) {
- if (snd_pcm_delay(u->pcm_handle, &frames) < 0) {
- pa_log(__FILE__": failed to get delay");
- s->get_latency = NULL;
- return 0;
- }
+ return (pa_volume_t) round(((double) (alsa_vol - u->hw_volume_min) * PA_VOLUME_NORM) /
+ (double) (u->hw_volume_max - u->hw_volume_min));
+}
+
+static long to_alsa_volume(struct userdata *u, pa_volume_t vol) {
+ long alsa_vol;
+
+ alsa_vol = (long) round(((double) vol * (double) (u->hw_volume_max - u->hw_volume_min))
+ / PA_VOLUME_NORM) + u->hw_volume_min;
- return pa_bytes_to_usec(frames * u->frame_size, &s->sample_spec);
+ return PA_CLAMP_UNLIKELY(alsa_vol, u->hw_volume_min, u->hw_volume_max);
}
-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;
+ unsigned i;
+ pa_cvolume r;
+ char t[PA_CVOLUME_SNPRINT_MAX];
- 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;
-
- 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;
+ if (u->mixer_seperate_channels) {
+
+ r.channels = s->sample_spec.channels;
+
+ for (i = 0; i < s->sample_spec.channels; i++) {
+ long alsa_vol;
+
+ if (u->hw_dB_supported) {
+
+ if ((err = snd_mixer_selem_get_capture_dB(u->mixer_elem, u->mixer_map[i], &alsa_vol)) < 0)
+ goto fail;
+
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+ VALGRIND_MAKE_MEM_DEFINED(&alsa_vol, sizeof(alsa_vol));
+#endif
+
+ r.values[i] = pa_sw_volume_from_dB((double) (alsa_vol - u->hw_dB_max) / 100.0);
+ } else {
+
+ if ((err = snd_mixer_selem_get_capture_volume(u->mixer_elem, u->mixer_map[i], &alsa_vol)) < 0)
+ goto fail;
+
+ r.values[i] = from_alsa_volume(u, alsa_vol);
+ }
+ }
+
+ } else {
+ long alsa_vol;
+
+ if (u->hw_dB_supported) {
+
+ if ((err = snd_mixer_selem_get_capture_dB(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
+ goto fail;
+
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+ VALGRIND_MAKE_MEM_DEFINED(&alsa_vol, sizeof(alsa_vol));
+#endif
+
+ pa_cvolume_set(&r, s->sample_spec.channels, pa_sw_volume_from_dB((double) (alsa_vol - u->hw_dB_max) / 100.0));
+
+ } else {
+
+ if ((err = snd_mixer_selem_get_capture_volume(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
+ goto fail;
+
+ pa_cvolume_set(&r, s->sample_spec.channels, from_alsa_volume(u, alsa_vol));
+ }
+ }
+
+ pa_log_debug("Read hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &r));
- 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;
-
- /* 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));
+ if (!pa_cvolume_equal(&u->hardware_volume, &r)) {
+
+ u->hardware_volume = s->volume = r;
+
+ if (u->hw_dB_supported) {
+ pa_cvolume reset;
+
+ /* Hmm, so the hardware volume changed, let's reset our software volume */
+
+ pa_cvolume_reset(&reset, s->sample_spec.channels);
+ pa_source_set_soft_volume(s, &reset);
+ }
}
return 0;
fail:
- pa_log_error(__FILE__": Unable to read volume: %s", snd_strerror(err));
- s->get_hw_volume = NULL;
- s->set_hw_volume = NULL;
+ pa_log_error("Unable to read volume: %s", snd_strerror(err));
+
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;
+ unsigned i;
+ pa_cvolume r;
- assert(u && u->mixer_elem);
+ pa_assert(u);
+ pa_assert(u->mixer_elem);
- for (i = 0;i < s->hw_volume.channels;i++) {
- assert(snd_mixer_selem_has_capture_channel(u->mixer_elem, i));
+ if (u->mixer_seperate_channels) {
- vol = s->hw_volume.values[i];
+ r.channels = s->sample_spec.channels;
- if (vol > PA_VOLUME_NORM)
- vol = PA_VOLUME_NORM;
+ for (i = 0; i < s->sample_spec.channels; i++) {
+ long alsa_vol;
+ pa_volume_t vol;
- vol = (long) roundf(((float) vol * (u->hw_volume_max - u->hw_volume_min)) / PA_VOLUME_NORM) + u->hw_volume_min;
+ vol = s->volume.values[i];
- if ((err = snd_mixer_selem_set_capture_volume(u->mixer_elem, i, vol)) < 0)
- goto fail;
+ if (u->hw_dB_supported) {
+
+ alsa_vol = (long) (pa_sw_volume_to_dB(vol) * 100);
+ alsa_vol += u->hw_dB_max;
+ alsa_vol = PA_CLAMP_UNLIKELY(alsa_vol, u->hw_dB_min, u->hw_dB_max);
+
+ if ((err = snd_mixer_selem_set_capture_dB(u->mixer_elem, u->mixer_map[i], alsa_vol, 1)) < 0)
+ goto fail;
+
+ if ((err = snd_mixer_selem_get_capture_dB(u->mixer_elem, u->mixer_map[i], &alsa_vol)) < 0)
+ goto fail;
+
+ r.values[i] = pa_sw_volume_from_dB((double) (alsa_vol - u->hw_dB_max) / 100.0);
+
+ } else {
+ alsa_vol = to_alsa_volume(u, vol);
+
+ if ((err = snd_mixer_selem_set_capture_volume(u->mixer_elem, u->mixer_map[i], alsa_vol)) < 0)
+ goto fail;
+
+ if ((err = snd_mixer_selem_get_capture_volume(u->mixer_elem, u->mixer_map[i], &alsa_vol)) < 0)
+ goto fail;
+
+ r.values[i] = from_alsa_volume(u, alsa_vol);
+ }
+ }
+
+ } else {
+ pa_volume_t vol;
+ long alsa_vol;
+
+ vol = pa_cvolume_max(&s->volume);
+
+ if (u->hw_dB_supported) {
+ alsa_vol = (long) (pa_sw_volume_to_dB(vol) * 100);
+ alsa_vol += u->hw_dB_max;
+ alsa_vol = PA_CLAMP_UNLIKELY(alsa_vol, u->hw_dB_min, u->hw_dB_max);
+
+ if ((err = snd_mixer_selem_set_capture_dB_all(u->mixer_elem, alsa_vol, 1)) < 0)
+ goto fail;
+
+ if ((err = snd_mixer_selem_get_capture_dB(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
+ goto fail;
+
+ pa_cvolume_set(&r, s->volume.channels, pa_sw_volume_from_dB((double) (alsa_vol - u->hw_dB_max) / 100.0));
+
+ } else {
+ alsa_vol = to_alsa_volume(u, vol);
+
+ if ((err = snd_mixer_selem_set_capture_volume_all(u->mixer_elem, alsa_vol)) < 0)
+ goto fail;
+
+ if ((err = snd_mixer_selem_get_capture_volume(u->mixer_elem, SND_MIXER_SCHN_MONO, &alsa_vol)) < 0)
+ goto fail;
+
+ pa_cvolume_set(&r, s->sample_spec.channels, from_alsa_volume(u, alsa_vol));
+ }
}
+ u->hardware_volume = r;
+
+ if (u->hw_dB_supported) {
+ char t[PA_CVOLUME_SNPRINT_MAX];
+
+ /* Match exactly what the user requested by software */
+
+ pa_sw_cvolume_divide(&r, &s->volume, &r);
+ pa_source_set_soft_volume(s, &r);
+
+ pa_log_debug("Requested volume: %s", pa_cvolume_snprint(t, sizeof(t), &s->volume));
+ pa_log_debug("Got hardware volume: %s", pa_cvolume_snprint(t, sizeof(t), &u->hardware_volume));
+ pa_log_debug("Calculated software volume: %s", pa_cvolume_snprint(t, sizeof(t), &r));
+
+ } else
+
+ /* We can't match exactly what the user requested, hence let's
+ * at least tell the user about it */
+
+ s->volume = r;
+
return 0;
fail:
- pa_log_error(__FILE__": Unable to set volume: %s", snd_strerror(err));
- s->get_hw_volume = NULL;
- s->set_hw_volume = NULL;
+ pa_log_error("Unable to set volume: %s", snd_strerror(err));
+
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) {
- pa_log_error(__FILE__": Unable to get switch: %s", snd_strerror(err));
- s->get_hw_mute = NULL;
- s->set_hw_mute = NULL;
+ 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));
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) {
- pa_log_error(__FILE__": Unable to set switch: %s", snd_strerror(err));
- s->get_hw_mute = NULL;
- s->set_hw_mute = NULL;
+ 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));
return -1;
}
return 0;
}
-int pa__init(pa_core *c, pa_module*m) {
+static void source_update_requested_latency_cb(pa_source *s) {
+ struct userdata *u = s->userdata;
+ pa_assert(u);
+
+ if (!u->pcm_handle)
+ return;
+
+ update_sw_params(u);
+}
+
+static void thread_func(void *userdata) {
+ struct userdata *u = userdata;
+ unsigned 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);
+ pa_rtpoll_install(u->rtpoll);
+
+ for (;;) {
+ int ret;
+
+/* pa_log_debug("loop"); */
+
+ /* Read some data and pass it to the sources */
+ if (PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
+ int work_done = 0;
+ pa_usec_t sleep_usec = 0;
+
+ if (u->use_mmap)
+ work_done = mmap_read(u, &sleep_usec, revents & POLLIN);
+ else
+ work_done = unix_read(u, &sleep_usec, revents & POLLIN);
+
+ if (work_done < 0)
+ goto fail;
+
+/* pa_log_debug("work_done = %i", work_done); */
+
+ if (work_done)
+ update_smoother(u);
+
+ if (u->use_tsched) {
+ pa_usec_t cusec;
+
+ /* OK, the capture buffer is now empty, let's
+ * calculate when to wake up next */
+
+/* pa_log_debug("Waking up in %0.2fms (sound card clock).", (double) sleep_usec / PA_USEC_PER_MSEC); */
+
+ /* Convert from the sound card time domain to the
+ * system time domain */
+ cusec = pa_smoother_translate(u->smoother, pa_rtclock_usec(), sleep_usec);
+
+/* pa_log_debug("Waking up in %0.2fms (system clock).", (double) cusec / PA_USEC_PER_MSEC); */
+
+ /* We don't trust the conversion, so we wake up whatever comes first */
+ pa_rtpoll_set_timer_relative(u->rtpoll, PA_MIN(sleep_usec, cusec));
+ }
+ } else if (u->use_tsched)
+
+ /* OK, we're in an invalid state, let's disable our timers */
+ pa_rtpoll_set_timer_disabled(u->rtpoll);
+
+ /* Hmm, nothing to do. Let's sleep */
+ if ((ret = pa_rtpoll_run(u->rtpoll, TRUE)) < 0)
+ goto fail;
+
+ if (ret == 0)
+ goto finish;
+
+ /* Tell ALSA about this and process its response */
+ if (PA_SOURCE_IS_OPENED(u->source->thread_info.state)) {
+ struct pollfd *pollfd;
+ int err;
+ unsigned n;
+
+ pollfd = pa_rtpoll_item_get_pollfd(u->alsa_rtpoll_item, &n);
+
+ if ((err = snd_pcm_poll_descriptors_revents(u->pcm_handle, pollfd, n, &revents)) < 0) {
+ pa_log("snd_pcm_poll_descriptors_revents() failed: %s", snd_strerror(err));
+ goto fail;
+ }
+
+ if (revents & (POLLOUT|POLLERR|POLLNVAL|POLLHUP|POLLPRI)) {
+ if (pa_alsa_recover_from_poll(u->pcm_handle, revents) < 0)
+ goto fail;
+
+ snd_pcm_start(u->pcm_handle);
+ }
+
+ if (revents && u->use_tsched)
+ pa_log_debug("Wakeup from ALSA!%s%s", (revents & POLLIN) ? " INPUT" : "", (revents & POLLOUT) ? " OUTPUT" : "");
+ } 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) {
+
pa_modargs *ma = NULL;
- int ret = -1;
struct userdata *u = NULL;
- const char *dev;
+ const char *dev_id;
pa_sample_spec ss;
pa_channel_map map;
- unsigned periods, fragsize;
- snd_pcm_uframes_t period_size;
+ uint32_t nfrags, hwbuf_size, frag_size, tsched_size, tsched_watermark;
+ snd_pcm_uframes_t period_frames, tsched_frames;
size_t frame_size;
snd_pcm_info_t *pcm_info = NULL;
int err;
- char *t;
const char *name;
char *name_buf = NULL;
- int namereg_fail;
-
+ pa_bool_t namereg_fail;
+ pa_bool_t use_mmap = TRUE, b, use_tsched = TRUE, d;
+ pa_source_new_data data;
+
+ snd_pcm_info_alloca(&pcm_info);
+
+ pa_assert(m);
+
+ pa_alsa_redirect_errors_inc();
+
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
- pa_log(__FILE__": failed to parse module arguments");
+ pa_log("Failed to parse module arguments");
goto fail;
}
- ss = c->default_sample_spec;
+ ss = m->core->default_sample_spec;
if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_ALSA) < 0) {
- pa_log(__FILE__": 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;
-
- if (pa_modargs_get_value_u32(ma, "fragments", &periods) < 0 || pa_modargs_get_value_u32(ma, "fragment_size", &fragsize) < 0) {
- pa_log(__FILE__": failed to parse buffer metrics");
+ nfrags = m->core->default_n_fragments;
+ frag_size = (uint32_t) pa_usec_to_bytes(m->core->default_fragment_size_msec*PA_USEC_PER_MSEC, &ss);
+ if (frag_size <= 0)
+ frag_size = (uint32_t) frame_size;
+ tsched_size = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC, &ss);
+ tsched_watermark = (uint32_t) pa_usec_to_bytes(DEFAULT_TSCHED_WATERMARK_USEC, &ss);
+
+ if (pa_modargs_get_value_u32(ma, "fragments", &nfrags) < 0 ||
+ pa_modargs_get_value_u32(ma, "fragment_size", &frag_size) < 0 ||
+ pa_modargs_get_value_u32(ma, "tsched_buffer_size", &tsched_size) < 0 ||
+ pa_modargs_get_value_u32(ma, "tsched_buffer_watermark", &tsched_watermark) < 0) {
+ pa_log("Failed to parse buffer metrics");
+ goto fail;
+ }
+
+ hwbuf_size = frag_size * nfrags;
+ period_frames = frag_size/frame_size;
+ tsched_frames = tsched_size/frame_size;
+
+ if (pa_modargs_get_value_boolean(ma, "mmap", &use_mmap) < 0) {
+ pa_log("Failed to parse mmap argument.");
+ goto fail;
+ }
+
+ if (pa_modargs_get_value_boolean(ma, "tsched", &use_tsched) < 0) {
+ pa_log("Failed to parse timer_scheduling argument.");
goto fail;
}
- period_size = fragsize/frame_size;
-
+
+ if (use_tsched && !pa_rtclock_hrtimer()) {
+ pa_log_notice("Disabling timer-based scheduling because high-resolution timers are not available from the kernel.");
+ use_tsched = FALSE;
+ }
+
u = pa_xnew0(struct userdata, 1);
- m->userdata = u;
+ u->core = m->core;
u->module = m;
-
+ m->userdata = u;
+ u->use_mmap = use_mmap;
+ u->use_tsched = use_tsched;
+ u->rtpoll = pa_rtpoll_new();
+ pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll);
+ u->alsa_rtpoll_item = NULL;
+
+ u->smoother = pa_smoother_new(DEFAULT_TSCHED_WATERMARK_USEC, DEFAULT_TSCHED_WATERMARK_USEC, TRUE, 5);
+ pa_smoother_set_time_offset(u->smoother, pa_rtclock_usec());
+
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) {
- pa_log(__FILE__": Error opening PCM device %s: %s", dev, snd_strerror(err));
- goto fail;
+
+ b = use_mmap;
+ d = use_tsched;
+
+ if ((dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
+
+ if (!(u->pcm_handle = pa_alsa_open_by_device_id(
+ dev_id,
+ &u->device_name,
+ &ss, &map,
+ SND_PCM_STREAM_CAPTURE,
+ &nfrags, &period_frames, tsched_frames,
+ &b, &d)))
+ goto fail;
+
+ } else {
+
+ if (!(u->pcm_handle = pa_alsa_open_by_device_string(
+ pa_modargs_get_value(ma, "device", DEFAULT_DEVICE),
+ &u->device_name,
+ &ss, &map,
+ SND_PCM_STREAM_CAPTURE,
+ &nfrags, &period_frames, tsched_frames,
+ &b, &d)))
+ goto fail;
}
- if ((err = snd_pcm_info_malloc(&pcm_info)) < 0 ||
- (err = snd_pcm_info(u->pcm_handle, pcm_info)) < 0) {
- pa_log(__FILE__": Error fetching PCM info: %s", snd_strerror(err));
- goto fail;
+ pa_assert(u->device_name);
+ pa_log_info("Successfully opened device %s.", u->device_name);
+
+ if (use_mmap && !b) {
+ pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
+ u->use_mmap = use_mmap = FALSE;
}
- if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &periods, &period_size)) < 0) {
- pa_log(__FILE__": Failed to set hardware parameters: %s", snd_strerror(err));
- goto fail;
+ if (use_tsched && (!b || !d)) {
+ pa_log_info("Cannot enabled timer-based scheduling, falling back to sound IRQ scheduling.");
+ u->use_tsched = use_tsched = FALSE;
}
- 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 (u->use_mmap)
+ pa_log_info("Successfully enabled mmap() mode.");
+
+ if (u->use_tsched)
+ pa_log_info("Successfully enabled timer-based scheduling mode.");
- if ((err = snd_mixer_open(&u->mixer_handle, 0)) < 0) {
- pa_log(__FILE__": Error opening mixer: %s", snd_strerror(err));
+ if ((err = snd_pcm_info(u->pcm_handle, pcm_info)) < 0) {
+ pa_log("Error fetching PCM info: %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;
+ /* ALSA might tweak the sample spec, so recalculate the frame size */
+ frame_size = pa_frame_size(&ss);
+
+ if ((err = snd_mixer_open(&u->mixer_handle, 0)) < 0)
+ pa_log("Error opening mixer: %s", snd_strerror(err));
+ else {
+ pa_bool_t found = FALSE;
+
+ if (pa_alsa_prepare_mixer(u->mixer_handle, u->device_name) >= 0)
+ found = TRUE;
+ else {
+ snd_pcm_info_t* info;
+
+ snd_pcm_info_alloca(&info);
+
+ if (snd_pcm_info(u->pcm_handle, info) >= 0) {
+ char *md;
+ int card;
+
+ if ((card = snd_pcm_info_get_card(info)) >= 0) {
+
+ md = pa_sprintf_malloc("hw:%i", card);
+
+ if (strcmp(u->device_name, md))
+ if (pa_alsa_prepare_mixer(u->mixer_handle, md) >= 0)
+ found = TRUE;
+ pa_xfree(md);
+ }
+ }
+ }
+
+ if (found)
+ if (!(u->mixer_elem = pa_alsa_find_elem(u->mixer_handle, "Capture", "Mic", FALSE)))
+ found = FALSE;
+
+ if (!found) {
+ snd_mixer_close(u->mixer_handle);
+ u->mixer_handle = NULL;
+ }
}
if ((name = pa_modargs_get_value(ma, "source_name", NULL)))
- namereg_fail = 1;
+ namereg_fail = TRUE;
else {
- name = name_buf = pa_sprintf_malloc("alsa_input.%s", dev);
- namereg_fail = 0;
+ name = name_buf = pa_sprintf_malloc("alsa_input.%s", u->device_name);
+ namereg_fail = FALSE;
}
-
- if (!(u->source = pa_source_new(c, __FILE__, name, namereg_fail, &ss, &map))) {
- pa_log(__FILE__": Failed to create source object");
+
+ pa_source_new_data_init(&data);
+ data.driver = __FILE__;
+ data.module = m;
+ pa_source_new_data_set_name(&data, name);
+ data.namereg_fail = namereg_fail;
+ pa_source_new_data_set_sample_spec(&data, &ss);
+ pa_source_new_data_set_channel_map(&data, &map);
+
+ pa_alsa_init_proplist(data.proplist, pcm_info);
+ pa_proplist_sets(data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
+ pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) (period_frames * frame_size * nfrags));
+ pa_proplist_setf(data.proplist, PA_PROP_DEVICE_BUFFERING_FRAGMENT_SIZE, "%lu", (unsigned long) (period_frames * frame_size));
+ pa_proplist_sets(data.proplist, PA_PROP_DEVICE_ACCESS_MODE, u->use_tsched ? "mmap+timer" : (u->use_mmap ? "mmap" : "serial"));
+
+ u->source = pa_source_new(m->core, &data, PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY);
+ pa_source_new_data_done(&data);
+ 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->update_requested_latency = source_update_requested_latency_cb;
u->source->userdata = u;
- u->source->get_latency = source_get_latency_cb;
+
+ pa_source_set_asyncmsgq(u->source, u->thread_mq.inq);
+ pa_source_set_rtpoll(u->source, u->rtpoll);
+
+ u->frame_size = frame_size;
+ u->fragment_size = frag_size = (uint32_t) (period_frames * frame_size);
+ u->nfragments = nfrags;
+ u->hwbuf_size = u->fragment_size * nfrags;
+ u->hwbuf_unused_frames = 0;
+ u->tsched_watermark = tsched_watermark;
+ u->frame_index = 0;
+ u->hw_dB_supported = FALSE;
+ u->hw_dB_min = u->hw_dB_max = 0;
+ u->hw_volume_min = u->hw_volume_max = 0;
+ u->mixer_seperate_channels = FALSE;
+ pa_cvolume_mute(&u->hardware_volume, u->source->sample_spec.channels);
+
+ if (use_tsched)
+ fix_tsched_watermark(u);
+
+ pa_source_set_latency_range(u->source,
+ !use_tsched ? pa_bytes_to_usec(u->hwbuf_size, &ss) : (pa_usec_t) -1,
+ pa_bytes_to_usec(u->hwbuf_size, &ss));
+
+ pa_log_info("Using %u fragments of size %lu bytes, buffer time is %0.2fms",
+ nfrags, (long unsigned) u->fragment_size,
+ (double) pa_bytes_to_usec(u->hwbuf_size, &ss) / PA_USEC_PER_MSEC);
+
+ if (use_tsched)
+ pa_log_info("Time scheduling watermark is %0.2fms",
+ (double) pa_bytes_to_usec(u->tsched_watermark, &ss) / PA_USEC_PER_MSEC);
+
+ if (update_sw_params(u) < 0)
+ goto fail;
+
if (u->mixer_handle) {
- assert(u->mixer_elem);
- if (snd_mixer_selem_has_capture_volume(u->mixer_elem)) {
- int i;
+ pa_assert(u->mixer_elem);
- for (i = 0;i < ss.channels;i++) {
- if (!snd_mixer_selem_has_capture_channel(u->mixer_elem, i))
- break;
+ if (snd_mixer_selem_has_capture_volume(u->mixer_elem)) {
+ pa_bool_t suitable = FALSE;
+
+ if (snd_mixer_selem_get_capture_volume_range(u->mixer_elem, &u->hw_volume_min, &u->hw_volume_max) < 0)
+ pa_log_info("Failed to get volume range. Falling back to software volume control.");
+ else if (u->hw_volume_min >= u->hw_volume_max)
+ pa_log_warn("Your kernel driver is broken: it reports a volume range from %li to %li which makes no sense.", u->hw_volume_min, u->hw_volume_max);
+ else {
+ pa_log_info("Volume ranges from %li to %li.", u->hw_volume_min, u->hw_volume_max);
+ suitable = TRUE;
}
- 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);
+ if (suitable) {
+ if (snd_mixer_selem_get_capture_dB_range(u->mixer_elem, &u->hw_dB_min, &u->hw_dB_max) < 0)
+ pa_log_info("Mixer doesn't support dB information.");
+ else {
+#ifdef HAVE_VALGRIND_MEMCHECK_H
+ VALGRIND_MAKE_MEM_DEFINED(&u->hw_dB_min, sizeof(u->hw_dB_min));
+ VALGRIND_MAKE_MEM_DEFINED(&u->hw_dB_max, sizeof(u->hw_dB_max));
+#endif
+
+ if (u->hw_dB_min >= u->hw_dB_max)
+ pa_log_warn("Your kernel driver is broken: it reports a volume range from %0.2f dB to %0.2f dB which makes no sense.", (double) u->hw_dB_min/100.0, (double) u->hw_dB_max/100.0);
+ else {
+ pa_log_info("Volume ranges from %0.2f dB to %0.2f dB.", (double) u->hw_dB_min/100.0, (double) u->hw_dB_max/100.0);
+ u->hw_dB_supported = TRUE;
+
+ if (u->hw_dB_max > 0) {
+ u->source->base_volume = pa_sw_volume_from_dB(- (double) u->hw_dB_max/100.0);
+ pa_log_info("Fixing base volume to %0.2f dB", pa_sw_volume_to_dB(u->source->base_volume));
+ } else
+ pa_log_info("No particular base volume set, fixing to 0 dB");
+
+ }
+ }
+
+ if (!u->hw_dB_supported &&
+ u->hw_volume_max - u->hw_volume_min < 3) {
+
+ pa_log_info("Device has less than 4 volume levels. Falling back to software volume control.");
+ suitable = FALSE;
+ }
}
+
+ if (suitable) {
+ u->mixer_seperate_channels = pa_alsa_calc_mixer_map(u->mixer_elem, &map, u->mixer_map, FALSE) >= 0;
+
+ u->source->get_volume = source_get_volume_cb;
+ u->source->set_volume = source_set_volume_cb;
+ u->source->flags |= PA_SOURCE_HW_VOLUME_CTRL | (u->hw_dB_supported ? PA_SOURCE_DECIBEL_VOLUME : 0);
+ pa_log_info("Using hardware volume control. Hardware dB scale %s.", u->hw_dB_supported ? "supported" : "not supported");
+ } else
+ pa_log_info("Using software volume control.");
}
- 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;
- }
- }
- 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(__FILE__": failed to initialise file descriptor monitoring");
- goto fail;
- }
+ if (snd_mixer_selem_has_capture_switch(u->mixer_elem)) {
+ u->source->get_mute = source_get_mute_cb;
+ u->source->set_mute = source_set_mute_cb;
+ u->source->flags |= PA_SOURCE_HW_MUTE_CTRL;
+ } else
+ pa_log_info("Using software mute control.");
- 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) {
- pa_log(__FILE__": failed to initialise file descriptor monitoring");
+
+ if (pa_alsa_fdlist_set_mixer(u->mixer_fdl, u->mixer_handle, m->core->mainloop) < 0) {
+ pa_log("Failed to initialize 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_alsa_dump(u->pcm_handle);
- pa_log_info(__FILE__": using %u fragments of size %lu bytes.", periods, (long unsigned) u->fragment_size);
+ if (!(u->thread = pa_thread_new(thread_func, u))) {
+ pa_log("Failed to create thread.");
+ goto fail;
+ }
+ /* Get initial mixer settings */
+ if (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);
+ }
- u->memchunk.memblock = NULL;
- u->memchunk.index = u->memchunk.length = 0;
+ if (data.muted_is_set) {
+ if (u->source->set_mute)
+ u->source->set_mute(u->source);
+ } else {
+ if (u->source->get_mute)
+ u->source->get_mute(u->source);
+ }
- snd_pcm_start(u->pcm_handle);
-
- ret = 0;
+ pa_source_put(u->source);
- /* 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);
+ pa_modargs_free(ma);
-finish:
- pa_xfree(name_buf);
+ return 0;
- if (ma)
- pa_modargs_free(ma);
+fail:
- if (pcm_info)
- snd_pcm_info_free(pcm_info);
-
- return ret;
+ if (ma)
+ pa_modargs_free(ma);
-fail:
-
- if (u)
- pa__done(c, m);
+ pa__done(m);
- goto finish;
+ return -1;
}
-void pa__done(pa_core *c, pa_module*m) {
+void pa__done(pa_module*m) {
struct userdata *u;
- assert(c && m);
- if (!(u = m->userdata))
+ pa_assert(m);
+
+ if (!(u = m->userdata)) {
+ pa_alsa_redirect_errors_dec();
return;
+ }
+
+ 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->source)
+ pa_source_unref(u->source);
+
+ if (u->alsa_rtpoll_item)
+ pa_rtpoll_item_free(u->alsa_rtpoll_item);
- clear_up(u);
-
- if (u->memchunk.memblock)
- pa_memblock_unref(u->memchunk.memblock);
-
+ if (u->rtpoll)
+ pa_rtpoll_free(u->rtpoll);
+
+ 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);
+ }
+
+ if (u->smoother)
+ pa_smoother_free(u->smoother);
+
+ pa_xfree(u->device_name);
pa_xfree(u);
-}
+ snd_config_update_free_global();
+ pa_alsa_redirect_errors_dec();
+}