mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-04 13:29:59 -05:00
Reorganised the source tree. We now have src/ with a couple of subdirs:
* daemon/ - Contains the files specific to the polypaudio daemon. * modules/ - All loadable modules. * polyp/ - Files that are part of the public, application interface or are only used in libpolyp. * polypcore/ - All other shared files. * tests/ - Test programs. * utils/ - Utility programs. git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@487 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Pierre Ossman
parent
5b881e6228
commit
e205b25d65
246 changed files with 724 additions and 689 deletions
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@ -1,277 +0,0 @@
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/* $Id$ */
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/***
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This file is part of polypaudio.
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polypaudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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polypaudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with polypaudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <assert.h>
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#include <stdio.h>
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#ifdef HAVE_SYS_POLL_H
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#include <sys/poll.h>
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#else
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#include "poll.h"
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#endif
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#include <asoundlib.h>
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#include "module.h"
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#include "core.h"
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#include "memchunk.h"
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#include "sink.h"
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#include "modargs.h"
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#include "util.h"
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#include "sample-util.h"
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#include "alsa-util.h"
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#include "xmalloc.h"
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#include "log.h"
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#include "module-alsa-source-symdef.h"
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PA_MODULE_AUTHOR("Lennart Poettering")
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PA_MODULE_DESCRIPTION("ALSA Source")
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PA_MODULE_VERSION(PACKAGE_VERSION)
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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>")
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struct userdata {
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snd_pcm_t *pcm_handle;
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pa_source *source;
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pa_io_event **io_events;
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unsigned n_io_events;
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size_t frame_size, fragment_size;
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pa_memchunk memchunk;
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pa_module *module;
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};
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static const char* const valid_modargs[] = {
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"device",
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"source_name",
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"channels",
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"rate",
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"format",
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"fragments",
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"fragment_size",
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NULL
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};
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#define DEFAULT_SOURCE_NAME "alsa_input"
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#define DEFAULT_DEVICE "hw:0,0"
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static void update_usage(struct userdata *u) {
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pa_module_set_used(u->module,
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(u->source ? pa_idxset_size(u->source->outputs) : 0));
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}
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static void xrun_recovery(struct userdata *u) {
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assert(u);
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pa_log(__FILE__": *** ALSA-XRUN (capture) ***\n");
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if (snd_pcm_prepare(u->pcm_handle) < 0)
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pa_log(__FILE__": snd_pcm_prepare() failed\n");
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}
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static void do_read(struct userdata *u) {
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assert(u);
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update_usage(u);
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for (;;) {
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pa_memchunk post_memchunk;
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snd_pcm_sframes_t frames;
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size_t l;
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if (!u->memchunk.memblock) {
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u->memchunk.memblock = pa_memblock_new(u->memchunk.length = u->fragment_size, u->source->core->memblock_stat);
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u->memchunk.index = 0;
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}
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assert(u->memchunk.memblock && u->memchunk.memblock->data && u->memchunk.length && u->memchunk.memblock->length && (u->memchunk.length % u->frame_size) == 0);
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if ((frames = snd_pcm_readi(u->pcm_handle, (uint8_t*) u->memchunk.memblock->data + u->memchunk.index, u->memchunk.length / u->frame_size)) < 0) {
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if (frames == -EAGAIN)
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return;
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if (frames == -EPIPE) {
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xrun_recovery(u);
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continue;
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}
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pa_log(__FILE__": snd_pcm_readi() failed: %s\n", strerror(-frames));
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return;
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}
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l = frames * u->frame_size;
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post_memchunk = u->memchunk;
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post_memchunk.length = l;
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pa_source_post(u->source, &post_memchunk);
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u->memchunk.index += l;
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u->memchunk.length -= l;
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if (u->memchunk.length == 0) {
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pa_memblock_unref(u->memchunk.memblock);
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u->memchunk.memblock = NULL;
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u->memchunk.index = u->memchunk.length = 0;
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}
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break;
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}
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}
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static void io_callback(pa_mainloop_api*a, pa_io_event *e, PA_GCC_UNUSED int fd, PA_GCC_UNUSED pa_io_event_flags_t f, void *userdata) {
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struct userdata *u = userdata;
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assert(u && a && e);
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if (snd_pcm_state(u->pcm_handle) == SND_PCM_STATE_XRUN)
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xrun_recovery(u);
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do_read(u);
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}
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static pa_usec_t source_get_latency_cb(pa_source *s) {
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struct userdata *u = s->userdata;
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snd_pcm_sframes_t frames;
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assert(s && u && u->source);
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if (snd_pcm_delay(u->pcm_handle, &frames) < 0) {
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pa_log(__FILE__": failed to get delay\n");
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s->get_latency = NULL;
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return 0;
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}
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return pa_bytes_to_usec(frames * u->frame_size, &s->sample_spec);
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}
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int pa__init(pa_core *c, pa_module*m) {
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pa_modargs *ma = NULL;
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int ret = -1;
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struct userdata *u = NULL;
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const char *dev;
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pa_sample_spec ss;
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unsigned periods, fragsize;
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snd_pcm_uframes_t period_size;
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size_t frame_size;
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int err;
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if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
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pa_log(__FILE__": failed to parse module arguments\n");
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goto fail;
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}
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ss = c->default_sample_spec;
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if (pa_modargs_get_sample_spec(ma, &ss) < 0) {
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pa_log(__FILE__": failed to parse sample specification\n");
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goto fail;
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}
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frame_size = pa_frame_size(&ss);
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periods = 12;
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fragsize = 1024;
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if (pa_modargs_get_value_u32(ma, "fragments", &periods) < 0 || pa_modargs_get_value_u32(ma, "fragment_size", &fragsize) < 0) {
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pa_log(__FILE__": failed to parse buffer metrics\n");
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goto fail;
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}
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period_size = fragsize;
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u = pa_xmalloc0(sizeof(struct userdata));
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m->userdata = u;
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u->module = m;
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snd_config_update_free_global();
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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) {
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pa_log(__FILE__": Error opening PCM device %s: %s\n", dev, snd_strerror(err));
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goto fail;
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}
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if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &periods, &period_size)) < 0) {
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pa_log(__FILE__": Failed to set hardware parameters: %s\n", snd_strerror(err));
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goto fail;
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}
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u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, NULL);
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assert(u->source);
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u->source->userdata = u;
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u->source->get_latency = source_get_latency_cb;
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pa_source_set_owner(u->source, m);
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u->source->description = pa_sprintf_malloc("Advanced Linux Sound Architecture PCM on '%s'", dev);
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if (pa_create_io_events(u->pcm_handle, c->mainloop, &u->io_events, &u->n_io_events, io_callback, u) < 0) {
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pa_log(__FILE__": failed to obtain file descriptors\n");
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goto fail;
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}
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u->frame_size = frame_size;
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u->fragment_size = period_size;
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pa_log(__FILE__": using %u fragments of size %u bytes.\n", periods, u->fragment_size);
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u->memchunk.memblock = NULL;
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u->memchunk.index = u->memchunk.length = 0;
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snd_pcm_start(u->pcm_handle);
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ret = 0;
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finish:
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if (ma)
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pa_modargs_free(ma);
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return ret;
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fail:
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if (u)
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pa__done(c, m);
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goto finish;
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}
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void pa__done(pa_core *c, pa_module*m) {
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struct userdata *u;
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assert(c && m);
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if (!(u = m->userdata))
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return;
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if (u->source) {
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pa_source_disconnect(u->source);
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pa_source_unref(u->source);
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}
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if (u->io_events)
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pa_free_io_events(c->mainloop, u->io_events, u->n_io_events);
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if (u->pcm_handle) {
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snd_pcm_drop(u->pcm_handle);
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snd_pcm_close(u->pcm_handle);
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}
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if (u->memchunk.memblock)
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pa_memblock_unref(u->memchunk.memblock);
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pa_xfree(u);
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}
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