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-rw-r--r--src/module-alsa-source.c237
1 files changed, 0 insertions, 237 deletions
diff --git a/src/module-alsa-source.c b/src/module-alsa-source.c
deleted file mode 100644
index 287a0350..00000000
--- a/src/module-alsa-source.c
+++ /dev/null
@@ -1,237 +0,0 @@
-/* $Id$ */
-
-/***
- This file is part of polypaudio.
-
- polypaudio is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2 of the License,
- or (at your option) any later version.
-
- polypaudio 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 General Public License
- along with polypaudio; 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>
-#include <sys/poll.h>
-
-#include <asoundlib.h>
-
-#include "module.h"
-#include "core.h"
-#include "memchunk.h"
-#include "sink.h"
-#include "modargs.h"
-#include "util.h"
-#include "sample-util.h"
-#include "alsa-util.h"
-
-struct userdata {
- snd_pcm_t *pcm_handle;
- struct pa_source *source;
- void **io_sources;
- unsigned n_io_sources;
-
- size_t frame_size, fragment_size;
- struct pa_memchunk memchunk;
-};
-
-static const char* const valid_modargs[] = {
- "device",
- "source_name",
- "format",
- "channels",
- "rate",
- "fragments",
- "fragment_size",
- NULL
-};
-
-#define DEFAULT_SOURCE_NAME "alsa_input"
-#define DEFAULT_DEVICE "hw:0,0"
-
-static void xrun_recovery(struct userdata *u) {
- assert(u);
-
- fprintf(stderr, "*** ALSA-XRUN (capture) ***\n");
-
- if (snd_pcm_prepare(u->pcm_handle) < 0)
- fprintf(stderr, "snd_pcm_prepare() failed\n");
-}
-
-static void do_read(struct userdata *u) {
- assert(u);
-
- for (;;) {
- struct 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->memchunk.index = 0;
- }
-
- assert(u->memchunk.memblock && u->memchunk.memblock->data && u->memchunk.length && u->memchunk.memblock->length && (u->memchunk.length % u->frame_size) == 0);
-
- if ((frames = snd_pcm_readi(u->pcm_handle, 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;
- }
-
- fprintf(stderr, "snd_pcm_readi() failed: %s\n", strerror(-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 io_callback(struct pa_mainloop_api*a, void *id, int fd, enum pa_mainloop_api_io_events events, void *userdata) {
- struct userdata *u = userdata;
- assert(u && a && id);
-
- if (snd_pcm_state(u->pcm_handle) == SND_PCM_STATE_XRUN)
- xrun_recovery(u);
-
- do_read(u);
-}
-
-int pa_module_init(struct pa_core *c, struct pa_module*m) {
- struct pa_modargs *ma = NULL;
- int ret = -1;
- struct userdata *u = NULL;
- const char *dev;
- struct pa_sample_spec ss;
- unsigned periods, fragsize;
- snd_pcm_uframes_t buffer_size;
- size_t frame_size;
-
- if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
- fprintf(stderr, __FILE__": failed to parse module arguments\n");
- goto fail;
- }
-
- ss = c->default_sample_spec;
- if (pa_modargs_get_sample_spec(ma, &ss) < 0) {
- fprintf(stderr, __FILE__": failed to parse sample specification\n");
- goto fail;
- }
- frame_size = pa_sample_size(&ss);
-
- periods = 12;
- fragsize = 1024;
- if (pa_modargs_get_value_u32(ma, "fragments", &periods) < 0 || pa_modargs_get_value_u32(ma, "fragment_size", &fragsize) < 0) {
- fprintf(stderr, __FILE__": failed to parse buffer metrics\n");
- goto fail;
- }
- buffer_size = fragsize/frame_size*periods;
-
- u = malloc(sizeof(struct userdata));
- assert(u);
- memset(u, 0, sizeof(struct userdata));
- m->userdata = u;
-
- if (snd_pcm_open(&u->pcm_handle, dev = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK) < 0) {
- fprintf(stderr, __FILE__": Error opening PCM device %s\n", dev);
- goto fail;
- }
-
- if (pa_alsa_set_hw_params(u->pcm_handle, &ss, &periods, &buffer_size) < 0) {
- fprintf(stderr, __FILE__": Failed to set hardware parameters\n");
- goto fail;
- }
-
- u->source = pa_source_new(c, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss);
- assert(u->source);
-
- u->source->userdata = u;
- pa_source_set_owner(u->source, m);
- u->source->description = pa_sprintf_malloc("Advanced Linux Sound Architecture PCM on '%s'", dev);
-
- if (pa_create_io_sources(u->pcm_handle, c->mainloop, &u->io_sources, &u->n_io_sources, io_callback, u) < 0) {
- fprintf(stderr, __FILE__": failed to obtain file descriptors\n");
- goto fail;
- }
-
- u->frame_size = frame_size;
- u->fragment_size = buffer_size*u->frame_size/periods;
-
- fprintf(stderr, __FILE__": using %u fragments of size %u bytes.\n", periods, u->fragment_size);
-
- u->memchunk.memblock = NULL;
- u->memchunk.index = u->memchunk.length = 0;
-
- snd_pcm_start(u->pcm_handle);
-
- ret = 0;
-
-finish:
- if (ma)
- pa_modargs_free(ma);
-
- return ret;
-
-fail:
-
- if (u)
- pa_module_done(c, m);
-
- goto finish;
-}
-
-void pa_module_done(struct pa_core *c, struct pa_module*m) {
- struct userdata *u;
- assert(c && m);
-
- if ((u = m->userdata)) {
- if (u->source)
- pa_source_free(u->source);
-
- if (u->io_sources)
- pa_free_io_sources(c->mainloop, u->io_sources, u->n_io_sources);
-
- 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);
-
- free(u);
- }
-}
-
generated by cgit (git 2.34.1) at 2024-05-04 14:10:42 +0000