diff options
Diffstat (limited to 'src/modules/module-alsa-source.c')
| -rw-r--r-- | src/modules/module-alsa-source.c | 1401 |
1 files changed, 1097 insertions, 304 deletions
diff --git a/src/modules/module-alsa-source.c b/src/modules/module-alsa-source.c index 9bde46da..1cc467d9 100644 --- a/src/modules/module-alsa-source.c +++ b/src/modules/module-alsa-source.c @@ -1,18 +1,19 @@ -/* $Id$ */ - /*** 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 @@ -23,18 +24,13 @@ #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> #include <pulse/xmalloc.h> +#include <pulse/util.h> +#include <pulse/timeval.h> #include <pulsecore/core-error.h> #include <pulsecore/core.h> @@ -45,495 +41,1292 @@ #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> " + "mixer_reset=<reset hw volume and mute settings to sane defaults when falling back to software?>"); 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", + "mixer_reset", 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; + + 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_source_used_by(u->source) : 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 - 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; - pa_log_info("*** ALSA-XRUN (capture) ***"); - - if ((ret = snd_pcm_prepare(u->pcm_handle)) < 0) { - pa_log("snd_pcm_prepare() failed: %s", snd_strerror(-ret)); + if (n*u->frame_size < u->hwbuf_size) + left_to_record = u->hwbuf_size - (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) { + int work_done = 0; + pa_usec_t max_sleep_usec, process_usec; + 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; - void *p; - - if (!u->memchunk.memblock) { - u->memchunk.memblock = pa_memblock_new(u->source->core->mempool, u->memchunk.length = u->fragment_size); - u->memchunk.index = 0; + snd_pcm_sframes_t n; + int r; + + snd_pcm_hwsync(u->pcm_handle); + + if (PA_UNLIKELY((n = snd_pcm_avail_update(u->pcm_handle)) < 0)) { + + if ((r = try_recover(u, "snd_pcm_avail_update", n)) == 0) + continue; + + return r; } - - assert(u->memchunk.memblock); - assert(u->memchunk.length); - assert(u->memchunk.length % u->frame_size == 0); - - p = pa_memblock_acquire(u->memchunk.memblock); - - 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); - - if (frames == -EAGAIN) - return; - - if (frames == -EPIPE) { - if (xrun_recovery(u) < 0) - return; - + + left_to_record = check_left_to_record(u, n); + + if (u->use_tsched) + if (pa_bytes_to_usec(left_to_record, &u->source->sample_spec) > process_usec+max_sleep_usec/2) + break; + + if (PA_UNLIKELY(n <= 0)) + break; + + 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; + +/* pa_log_debug("%lu frames to read", (unsigned long) frames); */ + + if (PA_UNLIKELY((err = snd_pcm_mmap_begin(u->pcm_handle, &areas, &offset, &frames)) < 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((err = snd_pcm_mmap_commit(u->pcm_handle, offset, frames)) < 0)) { + + if ((r = try_recover(u, "snd_pcm_mmap_commit", err)) == 0) + continue; + + return r; + } + + work_done = 1; + + u->frame_index += frames; + +/* pa_log_debug("read %lu frames", (unsigned long) frames); */ + + if (frames >= (snd_pcm_uframes_t) n) + break; + + n -= frames; + } + } + + *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) { + int work_done = 0; + pa_usec_t max_sleep_usec, process_usec; + 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 = snd_pcm_avail_update(u->pcm_handle)) < 0)) { + + if ((r = try_recover(u, "snd_pcm_avail_update", n)) == 0) continue; + + return r; + } + + left_to_record = check_left_to_record(u, n); + + if (u->use_tsched) + if (pa_bytes_to_usec(left_to_record, &u->source->sample_spec) > process_usec+max_sleep_usec/2) + break; + + if (PA_UNLIKELY(n <= 0)) + return work_done; + + for (;;) { + void *p; + snd_pcm_sframes_t frames; + pa_memchunk chunk; + + chunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1); + + frames = 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, 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", n)) == 0) + continue; + + return r; } - pa_log("snd_pcm_readi() failed: %s", snd_strerror(-frames)); + chunk.index = 0; + chunk.length = frames * u->frame_size; + + pa_source_post(u->source, &chunk); + pa_memblock_unref(chunk.memblock); + + work_done = 1; + + u->frame_index += frames; - clear_up(u); - pa_module_unload_request(u->module); - return; +/* pa_log_debug("read %lu frames", (unsigned long) frames); */ + + if (frames >= n) + break; + + n -= frames; } - pa_memblock_release(u->memchunk.memblock); - - l = frames * u->frame_size; - - post_memchunk = u->memchunk; - post_memchunk.length = l; - - pa_source_post(u->source, &post_memchunk); - - 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; + } + + *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(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 - pa_bytes_to_usec(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_log_info("Device suspended..."); + + 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 %0.2f", (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 = + PA_LIKELY(b < u->hwbuf_size) ? + ((u->hwbuf_size - b) / u->frame_size) : 0; + + fix_tsched_watermark(u); } - - break; } + + 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); - if (snd_pcm_state(u->pcm_handle) == SND_PCM_STATE_XRUN) - if (xrun_recovery(u) < 0) - return; + pa_log_info("Trying resume..."); + + 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; + } + + 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."); + 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()); - do_read(u); + pa_log_info("Resumed successfully..."); + + return 0; + +fail: + if (u->pcm_handle) { + snd_pcm_close(u->pcm_handle); + u->pcm_handle = NULL; + } + + 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); + pa_source_get_mute(u->source); } return 0; } -static pa_usec_t source_get_latency_cb(pa_source *s) { +static int source_get_volume_cb(pa_source *s) { struct userdata *u = s->userdata; - snd_pcm_sframes_t frames; - assert(s && u && u->source); + int err; + int i; - if (snd_pcm_delay(u->pcm_handle, &frames) < 0) { - pa_log("failed to get delay"); - s->get_latency = NULL; - return 0; - } + pa_assert(u); + pa_assert(u->mixer_elem); - return pa_bytes_to_usec(frames * u->frame_size, &s->sample_spec); -} + for (i = 0; i < s->sample_spec.channels; i++) { + long alsa_vol; -static int source_get_hw_volume_cb(pa_source *s) { - struct userdata *u = s->userdata; - long vol; - int err; - int i; + pa_assert(snd_mixer_selem_has_capture_channel(u->mixer_elem, u->mixer_map[i])); + + if (u->hw_dB_supported) { + + if ((err = snd_mixer_selem_get_capture_dB(u->mixer_elem, u->mixer_map[i], &alsa_vol)) >= 0) { + s->volume.values[i] = pa_sw_volume_from_dB(alsa_vol / 100.0); + continue; + } - assert(u && u->mixer_elem); + u->hw_dB_supported = FALSE; + } - 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) + if ((err = snd_mixer_selem_get_capture_volume(u->mixer_elem, u->mixer_map[i], &alsa_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; - - /* 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) (alsa_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; + 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->hw_volume.channels;i++) { - assert(snd_mixer_selem_has_capture_channel(u->mixer_elem, i)); + for (i = 0; i < s->sample_spec.channels; i++) { + long alsa_vol; + pa_volume_t vol; - vol = s->hw_volume.values[i]; + pa_assert(snd_mixer_selem_has_capture_channel(u->mixer_elem, u->mixer_map[i])); - if (vol > PA_VOLUME_NORM) - vol = PA_VOLUME_NORM; + vol = PA_MIN(s->volume.values[i], PA_VOLUME_NORM); - vol = (long) roundf(((float) vol * (u->hw_volume_max - u->hw_volume_min)) / PA_VOLUME_NORM) + u->hw_volume_min; + if (u->hw_dB_supported) { + alsa_vol = (long) (pa_sw_volume_to_dB(vol) * 100); + alsa_vol = PA_CLAMP_UNLIKELY(alsa_vol, u->hw_dB_min, u->hw_dB_max); - if ((err = snd_mixer_selem_set_capture_volume(u->mixer_elem, i, vol)) < 0) + + if ((err = snd_mixer_selem_set_capture_dB(u->mixer_elem, u->mixer_map[i], alsa_vol, -1)) >= 0) { + + if (snd_mixer_selem_get_capture_dB(u->mixer_elem, u->mixer_map[i], &alsa_vol) >= 0) + s->volume.values[i] = pa_sw_volume_from_dB(alsa_vol / 100.0); + + continue; + } + + u->hw_dB_supported = FALSE; + } + + alsa_vol = (long) roundf(((float) vol * (u->hw_volume_max - u->hw_volume_min)) / PA_VOLUME_NORM) + u->hw_volume_min; + alsa_vol = PA_CLAMP_UNLIKELY(alsa_vol, u->hw_volume_min, u->hw_volume_max); + + if ((err = snd_mixer_selem_set_capture_volume(u->mixer_elem, u->mixer_map[i], alsa_vol)) < 0) goto fail; + + if (snd_mixer_selem_get_capture_volume(u->mixer_elem, u->mixer_map[i], &alsa_vol) >= 0) + s->volume.values[i] = (pa_volume_t) roundf(((float) (alsa_vol - u->hw_volume_min) * PA_VOLUME_NORM) / (u->hw_volume_max - u->hw_volume_min)); } return 0; fail: pa_log_error("Unable to set volume: %s", snd_strerror(err)); - s->get_hw_volume = NULL; - s->set_hw_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; 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; 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; + + 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; + + if (u->use_mmap) + work_done = mmap_read(u, &sleep_usec); + else + work_done = unix_read(u, &sleep_usec); + + 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, 1)) < 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; + unsigned short revents = 0; + 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 & (POLLERR|POLLNVAL|POLLHUP)) { + 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! (%i)", revents); + } + } + +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, mixer_reset = TRUE; + 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("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("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("failed to parse buffer metrics"); + nfrags = m->core->default_n_fragments; + frag_size = pa_usec_to_bytes(m->core->default_fragment_size_msec*PA_USEC_PER_MSEC, &ss); + if (frag_size <= 0) + frag_size = frame_size; + tsched_size = pa_usec_to_bytes(DEFAULT_TSCHED_BUFFER_USEC, &ss); + tsched_watermark = 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; } - period_size = fragsize/frame_size; - - u = pa_xnew0(struct userdata, 1); - m->userdata = u; - u->module = m; - - 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("Error opening PCM device %s: %s", dev, snd_strerror(err)); + + 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 ((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)); + if (pa_modargs_get_value_boolean(ma, "tsched", &use_tsched) < 0) { + pa_log("Failed to parse timer_scheduling argument."); goto fail; } - if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &periods, &period_size)) < 0) { - pa_log("Failed to set hardware parameters: %s", snd_strerror(err)); + if (use_tsched && !pa_rtclock_hrtimer()) { + pa_log("Disabling timer-based scheduling because high-resolution timers are not available from the kernel."); + use_tsched = FALSE; + } + + if (pa_modargs_get_value_boolean(ma, "mixer_reset", &mixer_reset) < 0) { + pa_log("Failed to parse mixer_reset argument."); goto fail; } - 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); + u = pa_xnew0(struct userdata, 1); + 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()); - if ((err = snd_mixer_open(&u->mixer_handle, 0)) < 0) { - pa_log("Error opening mixer: %s", snd_strerror(err)); + snd_config_update_free_global(); + + 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; + } + + 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 (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 (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_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"))) + 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_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 = 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; + + 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)) + if (pa_alsa_calc_mixer_map(u->mixer_elem, &map, u->mixer_map, FALSE) >= 0 && + snd_mixer_selem_get_capture_volume_range(u->mixer_elem, &u->hw_volume_min, &u->hw_volume_max) >= 0) { + + pa_bool_t suitable = TRUE; + + pa_log_info("Volume ranges from %li to %li.", u->hw_volume_min, u->hw_volume_max); + + if (u->hw_volume_min > u->hw_volume_max) { + + pa_log_info("Minimal volume %li larger than maximum volume %li. Strange stuff Falling back to software volume control.", u->hw_volume_min, u->hw_volume_max); + suitable = FALSE; + + } else if (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; + + } else if (snd_mixer_selem_get_capture_dB_range(u->mixer_elem, &u->hw_dB_min, &u->hw_dB_max) >= 0) { + + pa_log_info("Volume ranges from %0.2f dB to %0.2f dB.", u->hw_dB_min/100.0, u->hw_dB_max/100.0); + + /* Let's see if this thing actually is useful for muting */ + if (u->hw_dB_min > -6000) { + pa_log_info("Device cannot attenuate for more than -60 dB (only %0.2f dB supported), falling back to software volume control.", ((double) u->hw_dB_min) / 100); + + suitable = FALSE; + } else if (u->hw_dB_max < 0) { + + pa_log_info("Device is still attenuated at maximum volume setting (%0.2f dB is maximum). Strange stuff. Falling back to software volume control.", ((double) u->hw_dB_max) / 100); + suitable = FALSE; + + } else if (u->hw_dB_min >= u->hw_dB_max) { + + pa_log_info("Minimal dB (%0.2f) larger or equal to maximum dB (%0.2f). Strange stuff. Falling back to software volume control.", ((double) u->hw_dB_min) / 100, ((double) u->hw_dB_max) / 100); + suitable = FALSE; + + } else + u->hw_dB_supported = TRUE; + } + + if (suitable) { + 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 if (mixer_reset) { + pa_log_info("Using software volume control. Trying to reset sound card to 0 dB."); + pa_alsa_0dB_capture(u->mixer_elem); + } else + pa_log_info("Using software volume control. Leaving hw mixer controls untouched."); - 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 (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; + u->source->flags |= PA_SOURCE_HW_MUTE_CTRL; } - } - 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) { - pa_log("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("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); + + if (u->rtpoll) + pa_rtpoll_free(u->rtpoll); - clear_up(u); - - if (u->memchunk.memblock) - pa_memblock_unref(u->memchunk.memblock); - + 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(); +} |