From 41f6aea8fdbc744c13bc461056a2d694a5c4d06f Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Sat, 17 Jul 2004 14:12:30 +0000 Subject: rename src to polyp git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@90 fefdeb5f-60dc-0310-8127-8f9354f1896f --- src/module-alsa-source.c | 237 ----------------------------------------------- 1 file changed, 237 deletions(-) delete mode 100644 src/module-alsa-source.c (limited to 'src/module-alsa-source.c') 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 -#endif - -#include -#include -#include - -#include - -#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); - } -} - -- cgit