diff options
Diffstat (limited to 'src/modules/module-alsa-source.c')
| -rw-r--r-- | src/modules/module-alsa-source.c | 491 |
1 files changed, 0 insertions, 491 deletions
diff --git a/src/modules/module-alsa-source.c b/src/modules/module-alsa-source.c deleted file mode 100644 index ca4ac9d0..00000000 --- a/src/modules/module-alsa-source.c +++ /dev/null @@ -1,491 +0,0 @@ -/* $Id$ */ - -/*** - This file is part of PulseAudio. - - PulseAudio is free software; you can redistribute it and/or modify - it under the terms of the GNU Lesser General Public License as published - by the Free Software Foundation; either version 2 of the License, - or (at your option) any later version. - - PulseAudio is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with PulseAudio; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 - USA. -***/ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <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 <pulsecore/core-error.h> -#include <pulsecore/core.h> -#include <pulsecore/module.h> -#include <pulsecore/memchunk.h> -#include <pulsecore/sink.h> -#include <pulsecore/modargs.h> -#include <pulsecore/core-util.h> -#include <pulsecore/sample-util.h> -#include <pulsecore/log.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_USAGE( - "source_name=<name for the source> " - "device=<ALSA device> " - "format=<sample format> " - "channels=<number of channels> " - "rate=<sample rate> " - "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; -}; - -static const char* const valid_modargs[] = { - "device", - "source_name", - "channels", - "rate", - "format", - "fragments", - "fragment_size", - "channel_map", - NULL -}; - -#define DEFAULT_SOURCE_NAME "alsa_input" -#define DEFAULT_DEVICE "default" - -static void update_usage(struct userdata *u) { - pa_module_set_used(u->module, - (u->source ? pa_idxset_size(u->source->outputs) : 0)); -} - -static void xrun_recovery(struct userdata *u) { - assert(u); - - pa_log(__FILE__": *** ALSA-XRUN (capture) ***"); - - if (snd_pcm_prepare(u->pcm_handle) < 0) - pa_log(__FILE__": snd_pcm_prepare() failed"); -} - -static void do_read(struct userdata *u) { - assert(u); - - 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; - } - - 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) { - xrun_recovery(u); - continue; - } - - pa_log(__FILE__": snd_pcm_readi() failed: %s", pa_cstrerror(-frames)); - return; - } - - 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; - } - - break; - } -} - -static void fdl_callback(void *userdata) { - struct userdata *u = userdata; - assert(u); - - if (snd_pcm_state(u->pcm_handle) == SND_PCM_STATE_XRUN) - xrun_recovery(u); - - do_read(u); -} - -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); - - 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); - } - - return 0; -} - -static pa_usec_t source_get_latency_cb(pa_source *s) { - struct userdata *u = s->userdata; - snd_pcm_sframes_t frames; - assert(s && u && u->source); - - if (snd_pcm_delay(u->pcm_handle, &frames) < 0) { - pa_log(__FILE__": failed to get delay"); - s->get_latency = NULL; - return 0; - } - - return pa_bytes_to_usec(frames * u->frame_size, &s->sample_spec); -} - -static int source_get_hw_volume_cb(pa_source *s) { - struct userdata *u = s->userdata; - long vol; - int err; - int i; - - assert(u && u->mixer_elem); - - for (i = 0;i < s->hw_volume.channels;i++) { - assert(snd_mixer_selem_has_capture_channel(u->mixer_elem, i)); - - err = snd_mixer_selem_get_capture_volume(u->mixer_elem, i, &vol); - if (err < 0) - goto fail; - s->hw_volume.values[i] = - (vol - u->hw_volume_min) * PA_VOLUME_NORM / (u->hw_volume_max - u->hw_volume_min); - } - - 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; - return -1; -} - -static int source_set_hw_volume_cb(pa_source *s) { - struct userdata *u = s->userdata; - int err; - pa_volume_t vol; - int i; - - assert(u && u->mixer_elem); - - for (i = 0;i < s->hw_volume.channels;i++) { - assert(snd_mixer_selem_has_capture_channel(u->mixer_elem, i)); - - vol = s->hw_volume.values[i]; - - if (vol > PA_VOLUME_NORM) - vol = PA_VOLUME_NORM; - - vol = vol * (u->hw_volume_max - u->hw_volume_min) / - PA_VOLUME_NORM + u->hw_volume_min; - err = snd_mixer_selem_set_capture_volume(u->mixer_elem, i, vol); - if (err < 0) - goto fail; - } - - 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; - return -1; -} - -static int source_get_hw_mute_cb(pa_source *s) { - struct userdata *u = s->userdata; - int err, sw; - - assert(u && 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; - return -1; - } - - s->hw_muted = !sw; - - return 0; -} - -static int source_set_hw_mute_cb(pa_source *s) { - struct userdata *u = s->userdata; - int err; - - assert(u && 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; - return -1; - } - - return 0; -} - -int pa__init(pa_core *c, pa_module*m) { - pa_modargs *ma = NULL; - int ret = -1; - struct userdata *u = NULL; - const char *dev; - pa_sample_spec ss; - pa_channel_map map; - unsigned periods, fragsize; - snd_pcm_uframes_t period_size; - size_t frame_size; - snd_pcm_info_t *pcm_info = NULL; - int err; - - if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { - pa_log(__FILE__": failed to parse module arguments"); - goto fail; - } - - ss = c->default_sample_spec; - if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_ALSA) < 0) { - pa_log(__FILE__": 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"); - 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(__FILE__": Error opening PCM device %s: %s", dev, snd_strerror(err)); - 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; - } - - 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 (ss.channels != map.channels) - /* Seems ALSA didn't like the channel number, so let's fix the channel map */ - pa_channel_map_init_auto(&map, ss.channels, PA_CHANNEL_MAP_ALSA); - - if ((err = snd_mixer_open(&u->mixer_handle, 0)) < 0) { - pa_log(__FILE__": Error opening mixer: %s", snd_strerror(err)); - goto fail; - } - - if ((pa_alsa_prepare_mixer(u->mixer_handle, dev) < 0) || - !(u->mixer_elem = pa_alsa_find_elem(u->mixer_handle, "Capture", "Mic"))) { - snd_mixer_close(u->mixer_handle); - u->mixer_handle = NULL; - } - - if (!(u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &map))) { - pa_log(__FILE__": Failed to create source object"); - goto fail; - } - - u->source->is_hardware = 1; - u->source->userdata = u; - u->source->get_latency = source_get_latency_cb; - if (u->mixer_handle) { - assert(u->mixer_elem); - if (snd_mixer_selem_has_capture_volume(u->mixer_elem)) { - int i; - - for (i = 0;i < ss.channels;i++) { - if (!snd_mixer_selem_has_capture_channel(u->mixer_elem, i)) - break; - } - - 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; - } - } - pa_source_set_owner(u->source, m); - u->source->description = pa_sprintf_malloc("Advanced Linux Sound Architecture PCM on '%s' (%s)", dev, snd_pcm_info_get_name(pcm_info)); - - 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 (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"); - goto fail; - } - snd_mixer_elem_set_callback(u->mixer_elem, mixer_callback); - snd_mixer_elem_set_callback_private(u->mixer_elem, u); - } else - u->mixer_fdl = NULL; - - u->frame_size = frame_size; - u->fragment_size = period_size * frame_size; - - pa_log_info(__FILE__": using %u fragments of size %lu bytes.", periods, (long unsigned) u->fragment_size); - - u->memchunk.memblock = NULL; - u->memchunk.index = u->memchunk.length = 0; - - snd_pcm_start(u->pcm_handle); - - ret = 0; - - /* Get initial mixer settings */ - if (u->source->get_hw_volume) - u->source->get_hw_volume(u->source); - if (u->source->get_hw_mute) - u->source->get_hw_mute(u->source); - -finish: - if (ma) - pa_modargs_free(ma); - - if (pcm_info) - snd_pcm_info_free(pcm_info); - - return ret; - -fail: - - if (u) - pa__done(c, m); - - goto finish; -} - -void pa__done(pa_core *c, pa_module*m) { - struct userdata *u; - assert(c && m); - - if (!(u = m->userdata)) - return; - - if (u->source) { - pa_source_disconnect(u->source); - pa_source_unref(u->source); - } - - if (u->pcm_fdl) - pa_alsa_fdlist_free(u->pcm_fdl); - 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->memchunk.memblock) - pa_memblock_unref(u->memchunk.memblock); - - pa_xfree(u); -} - |