/* $Id$ */
/***
- This file is part of polypaudio.
-
- polypaudio is free software; you can redistribute it and/or modify
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 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.
-
- polypaudio is distributed in the hope that it will be useful, but
+
+ 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 polypaudio; if not, write to the Free Software
+ along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#include <sys/types.h>
#include <asoundlib.h>
-#include <polyp/sample.h>
-#include <polyp/xmalloc.h>
+#include <pulse/sample.h>
+#include <pulse/xmalloc.h>
-#include <polypcore/log.h>
+#include <pulsecore/log.h>
+#include <pulsecore/macro.h>
#include "alsa-util.h"
/* This is a temporary buffer used to avoid lots of mallocs */
struct pollfd *work_fds;
- snd_pcm_t *pcm;
snd_mixer_t *mixer;
pa_mainloop_api *m;
};
static void io_cb(pa_mainloop_api*a, pa_io_event* e, PA_GCC_UNUSED int fd, pa_io_event_flags_t events, void *userdata) {
- struct pa_alsa_fdlist *fdl = (struct pa_alsa_fdlist*)userdata;
+
+ struct pa_alsa_fdlist *fdl = userdata;
int err, i;
unsigned short revents;
- assert(a && fdl && (fdl->pcm || fdl->mixer) && fdl->fds && fdl->work_fds);
+ pa_assert(a);
+ pa_assert(fdl);
+ pa_assert(fdl->mixer);
+ pa_assert(fdl->fds);
+ pa_assert(fdl->work_fds);
if (fdl->polled)
return;
memcpy(fdl->work_fds, fdl->fds, sizeof(struct pollfd) * fdl->num_fds);
- for (i = 0;i < fdl->num_fds;i++) {
+ for (i = 0;i < fdl->num_fds; i++) {
if (e == fdl->ios[i]) {
if (events & PA_IO_EVENT_INPUT)
fdl->work_fds[i].revents |= POLLIN;
}
}
- assert(i != fdl->num_fds);
-
- if (fdl->pcm)
- err = snd_pcm_poll_descriptors_revents(fdl->pcm, fdl->work_fds, fdl->num_fds, &revents);
- else
- err = snd_mixer_poll_descriptors_revents(fdl->mixer, fdl->work_fds, fdl->num_fds, &revents);
+ pa_assert(i != fdl->num_fds);
- if (err < 0) {
- pa_log_error(__FILE__": Unable to get poll revent: %s",
- snd_strerror(err));
+ if ((err = snd_mixer_poll_descriptors_revents(fdl->mixer, fdl->work_fds, fdl->num_fds, &revents)) < 0) {
+ pa_log_error("Unable to get poll revent: %s", snd_strerror(err));
return;
}
- if (revents) {
- if (fdl->pcm)
- fdl->cb(fdl->userdata);
- else
- snd_mixer_handle_events(fdl->mixer);
- }
-
a->defer_enable(fdl->defer, 1);
+
+ if (revents)
+ snd_mixer_handle_events(fdl->mixer);
}
static void defer_cb(pa_mainloop_api*a, PA_GCC_UNUSED pa_defer_event* e, void *userdata) {
- struct pa_alsa_fdlist *fdl = (struct pa_alsa_fdlist*)userdata;
+ struct pa_alsa_fdlist *fdl = userdata;
int num_fds, i, err;
struct pollfd *temp;
- assert(a && fdl && (fdl->pcm || fdl->mixer));
+ pa_assert(a);
+ pa_assert(fdl);
+ pa_assert(fdl->mixer);
a->defer_enable(fdl->defer, 0);
- if (fdl->pcm)
- num_fds = snd_pcm_poll_descriptors_count(fdl->pcm);
- else
- num_fds = snd_mixer_poll_descriptors_count(fdl->mixer);
- assert(num_fds > 0);
+ num_fds = snd_mixer_poll_descriptors_count(fdl->mixer);
+ pa_assert(num_fds > 0);
if (num_fds != fdl->num_fds) {
if (fdl->fds)
pa_xfree(fdl->fds);
if (fdl->work_fds)
pa_xfree(fdl->work_fds);
- fdl->fds = pa_xmalloc0(sizeof(struct pollfd) * num_fds);
- fdl->work_fds = pa_xmalloc(sizeof(struct pollfd) * num_fds);
+ fdl->fds = pa_xnew0(struct pollfd, num_fds);
+ fdl->work_fds = pa_xnew(struct pollfd, num_fds);
}
memset(fdl->work_fds, 0, sizeof(struct pollfd) * num_fds);
- if (fdl->pcm)
- err = snd_pcm_poll_descriptors(fdl->pcm, fdl->work_fds, num_fds);
- else
- err = snd_mixer_poll_descriptors(fdl->mixer, fdl->work_fds, num_fds);
-
- if (err < 0) {
- pa_log_error(__FILE__": Unable to get poll descriptors: %s",
- snd_strerror(err));
+ if ((err = snd_mixer_poll_descriptors(fdl->mixer, fdl->work_fds, num_fds)) < 0) {
+ pa_log_error("Unable to get poll descriptors: %s", snd_strerror(err));
return;
}
return;
if (fdl->ios) {
- for (i = 0;i < fdl->num_fds;i++)
+ for (i = 0; i < fdl->num_fds; i++)
a->io_free(fdl->ios[i]);
+
if (num_fds != fdl->num_fds) {
pa_xfree(fdl->ios);
- fdl->ios = pa_xmalloc(sizeof(pa_io_event*) * num_fds);
- assert(fdl->ios);
+ fdl->ios = NULL;
}
- } else {
- fdl->ios = pa_xmalloc(sizeof(pa_io_event*) * num_fds);
- assert(fdl->ios);
}
+ if (!fdl->ios)
+ fdl->ios = pa_xnew(pa_io_event*, num_fds);
+
/* Swap pointers */
temp = fdl->work_fds;
fdl->work_fds = fdl->fds;
fdl->num_fds = num_fds;
- for (i = 0;i < num_fds;i++) {
+ for (i = 0;i < num_fds;i++)
fdl->ios[i] = a->io_new(a, fdl->fds[i].fd,
((fdl->fds[i].events & POLLIN) ? PA_IO_EVENT_INPUT : 0) |
((fdl->fds[i].events & POLLOUT) ? PA_IO_EVENT_OUTPUT : 0),
io_cb, fdl);
- assert(fdl->ios[i]);
- }
}
struct pa_alsa_fdlist *pa_alsa_fdlist_new(void) {
struct pa_alsa_fdlist *fdl;
- fdl = pa_xmalloc(sizeof(struct pa_alsa_fdlist));
- assert(fdl);
+ fdl = pa_xnew0(struct pa_alsa_fdlist, 1);
fdl->num_fds = 0;
fdl->fds = NULL;
fdl->work_fds = NULL;
-
- fdl->pcm = NULL;
fdl->mixer = NULL;
-
fdl->m = NULL;
fdl->defer = NULL;
fdl->ios = NULL;
-
fdl->polled = 0;
return fdl;
}
void pa_alsa_fdlist_free(struct pa_alsa_fdlist *fdl) {
- assert(fdl);
+ pa_assert(fdl);
if (fdl->defer) {
- assert(fdl->m);
+ pa_assert(fdl->m);
fdl->m->defer_free(fdl->defer);
}
if (fdl->ios) {
int i;
- assert(fdl->m);
+ pa_assert(fdl->m);
for (i = 0;i < fdl->num_fds;i++)
- fdl->m->io_free(fdl->ios[0]);
+ fdl->m->io_free(fdl->ios[i]);
pa_xfree(fdl->ios);
}
pa_xfree(fdl);
}
-int pa_alsa_fdlist_init_pcm(struct pa_alsa_fdlist *fdl, snd_pcm_t *pcm_handle, pa_mainloop_api* m, void (*cb)(void *userdata), void *userdata) {
- assert(fdl && pcm_handle && m && !fdl->m && cb);
+int pa_alsa_fdlist_set_mixer(struct pa_alsa_fdlist *fdl, snd_mixer_t *mixer_handle, pa_mainloop_api* m) {
+ pa_assert(fdl);
+ pa_assert(mixer_handle);
+ pa_assert(m);
+ pa_assert(!fdl->m);
- fdl->pcm = pcm_handle;
+ fdl->mixer = mixer_handle;
fdl->m = m;
-
fdl->defer = m->defer_new(m, defer_cb, fdl);
- assert(fdl->defer);
-
- fdl->cb = cb;
- fdl->userdata = userdata;
return 0;
}
-int pa_alsa_fdlist_init_mixer(struct pa_alsa_fdlist *fdl, snd_mixer_t *mixer_handle, pa_mainloop_api* m) {
- assert(fdl && mixer_handle && m && !fdl->m);
+static int set_format(snd_pcm_t *pcm_handle, snd_pcm_hw_params_t *hwparams, pa_sample_format_t *f) {
- fdl->mixer = mixer_handle;
- fdl->m = m;
+ static const snd_pcm_format_t format_trans[] = {
+ [PA_SAMPLE_U8] = SND_PCM_FORMAT_U8,
+ [PA_SAMPLE_ALAW] = SND_PCM_FORMAT_A_LAW,
+ [PA_SAMPLE_ULAW] = SND_PCM_FORMAT_MU_LAW,
+ [PA_SAMPLE_S16LE] = SND_PCM_FORMAT_S16_LE,
+ [PA_SAMPLE_S16BE] = SND_PCM_FORMAT_S16_BE,
+ [PA_SAMPLE_FLOAT32LE] = SND_PCM_FORMAT_FLOAT_LE,
+ [PA_SAMPLE_FLOAT32BE] = SND_PCM_FORMAT_FLOAT_BE,
+ };
- fdl->defer = m->defer_new(m, defer_cb, fdl);
- assert(fdl->defer);
+ static const pa_sample_format_t try_order[] = {
+ PA_SAMPLE_S16NE,
+ PA_SAMPLE_S16RE,
+ PA_SAMPLE_FLOAT32NE,
+ PA_SAMPLE_FLOAT32RE,
+ PA_SAMPLE_ULAW,
+ PA_SAMPLE_ALAW,
+ PA_SAMPLE_U8,
+ PA_SAMPLE_INVALID
+ };
- return 0;
+ int i, ret;
+
+ pa_assert(pcm_handle);
+ pa_assert(f);
+
+ if ((ret = snd_pcm_hw_params_set_format(pcm_handle, hwparams, format_trans[*f])) >= 0)
+ return ret;
+
+ if (*f == PA_SAMPLE_FLOAT32BE)
+ *f = PA_SAMPLE_FLOAT32LE;
+ else if (*f == PA_SAMPLE_FLOAT32LE)
+ *f = PA_SAMPLE_FLOAT32BE;
+ else if (*f == PA_SAMPLE_S16BE)
+ *f = PA_SAMPLE_S16LE;
+ else if (*f == PA_SAMPLE_S16LE)
+ *f = PA_SAMPLE_S16BE;
+ else
+ goto try_auto;
+
+ if ((ret = snd_pcm_hw_params_set_format(pcm_handle, hwparams, format_trans[*f])) >= 0)
+ return ret;
+
+try_auto:
+
+ for (i = 0; try_order[i] != PA_SAMPLE_INVALID; i++) {
+ *f = try_order[i];
+
+ if ((ret = snd_pcm_hw_params_set_format(pcm_handle, hwparams, format_trans[*f])) >= 0)
+ return ret;
+ }
+
+ return -1;
}
/* Set the hardware parameters of the given ALSA device. Returns the
* selected fragment settings in *period and *period_size */
-int pa_alsa_set_hw_params(snd_pcm_t *pcm_handle, pa_sample_spec *ss, uint32_t *periods, snd_pcm_uframes_t *period_size) {
+int pa_alsa_set_hw_params(snd_pcm_t *pcm_handle, pa_sample_spec *ss, uint32_t *periods, snd_pcm_uframes_t *period_size, int *use_mmap) {
int ret = -1;
snd_pcm_uframes_t buffer_size;
- snd_pcm_hw_params_t *hwparams = NULL;
unsigned int r = ss->rate;
unsigned int c = ss->channels;
-
- static const snd_pcm_format_t format_trans[] = {
- [PA_SAMPLE_U8] = SND_PCM_FORMAT_U8,
- [PA_SAMPLE_ALAW] = SND_PCM_FORMAT_A_LAW,
- [PA_SAMPLE_ULAW] = SND_PCM_FORMAT_MU_LAW,
- [PA_SAMPLE_S16LE] = SND_PCM_FORMAT_S16_LE,
- [PA_SAMPLE_S16BE] = SND_PCM_FORMAT_S16_BE,
- [PA_SAMPLE_FLOAT32LE] = SND_PCM_FORMAT_FLOAT_LE,
- [PA_SAMPLE_FLOAT32BE] = SND_PCM_FORMAT_FLOAT_BE,
- };
- assert(pcm_handle && ss && periods && period_size);
+ pa_sample_format_t f = ss->format;
+ snd_pcm_hw_params_t *hwparams;
+
+ pa_assert(pcm_handle);
+ pa_assert(ss);
+ pa_assert(periods);
+ pa_assert(period_size);
+
+ snd_pcm_hw_params_alloca(&hwparams);
buffer_size = *periods * *period_size;
-
- if ((ret = snd_pcm_hw_params_malloc(&hwparams)) < 0 ||
- (ret = snd_pcm_hw_params_any(pcm_handle, hwparams)) < 0 ||
- (ret = snd_pcm_hw_params_set_access(pcm_handle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0 ||
- (ret = snd_pcm_hw_params_set_format(pcm_handle, hwparams, format_trans[ss->format])) < 0 ||
- (ret = snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams, &r, NULL)) < 0 ||
- (ret = snd_pcm_hw_params_set_channels_near(pcm_handle, hwparams, &c)) < 0 ||
- (*period_size > 0 && (ret = snd_pcm_hw_params_set_period_size_near(pcm_handle, hwparams, period_size, NULL)) < 0) ||
- (*periods > 0 && (ret = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &buffer_size)) < 0) ||
- (ret = snd_pcm_hw_params(pcm_handle, hwparams)) < 0)
+
+ if ((ret = snd_pcm_hw_params_any(pcm_handle, hwparams)) < 0 ||
+ (ret = snd_pcm_hw_params_set_rate_resample(pcm_handle, hwparams, 0)) < 0)
+ goto finish;
+
+ if (use_mmap && *use_mmap) {
+ if ((ret = snd_pcm_hw_params_set_access(pcm_handle, hwparams, SND_PCM_ACCESS_MMAP_INTERLEAVED)) < 0) {
+
+ /* mmap() didn't work, fall back to interleaved */
+
+ if ((ret = snd_pcm_hw_params_set_access(pcm_handle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0)
+ goto finish;
+
+ if (use_mmap)
+ *use_mmap = 0;
+ }
+
+ } else if ((ret = snd_pcm_hw_params_set_access(pcm_handle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0)
+ goto finish;
+
+ if ((ret = set_format(pcm_handle, hwparams, &f)) < 0)
+ goto finish;
+
+ if ((ret = snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams, &r, NULL)) < 0)
+ goto finish;
+
+ if ((ret = snd_pcm_hw_params_set_channels_near(pcm_handle, hwparams, &c)) < 0)
+ goto finish;
+
+ if ((*period_size > 0 && (ret = snd_pcm_hw_params_set_period_size_near(pcm_handle, hwparams, period_size, NULL)) < 0) ||
+ (*periods > 0 && (ret = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &buffer_size)) < 0))
+ goto finish;
+
+ if ((ret = snd_pcm_hw_params(pcm_handle, hwparams)) < 0)
goto finish;
if (ss->rate != r) {
- pa_log_info(__FILE__": device doesn't support %u Hz, changed to %u Hz.", ss->rate, r);
+ pa_log_warn("Device %s doesn't support %u Hz, changed to %u Hz.", snd_pcm_name(pcm_handle), ss->rate, r);
/* If the sample rate deviates too much, we need to resample */
if (r < ss->rate*.95 || r > ss->rate*1.05)
}
if (ss->channels != c) {
- pa_log_info(__FILE__": device doesn't support %u channels, changed to %u.", ss->channels, c);
+ pa_log_warn("Device %s doesn't support %u channels, changed to %u.", snd_pcm_name(pcm_handle), ss->channels, c);
ss->channels = c;
}
-
+
+ if (ss->format != f) {
+ pa_log_warn("Device %s doesn't support sample format %s, changed to %s.", snd_pcm_name(pcm_handle), pa_sample_format_to_string(ss->format), pa_sample_format_to_string(f));
+ ss->format = f;
+ }
+
if ((ret = snd_pcm_prepare(pcm_handle)) < 0)
goto finish;
if ((ret = snd_pcm_hw_params_get_buffer_size(hwparams, &buffer_size)) < 0 ||
(ret = snd_pcm_hw_params_get_period_size(hwparams, period_size, NULL)) < 0)
goto finish;
-
- assert(buffer_size > 0);
- assert(*period_size > 0);
+
+ pa_assert(buffer_size > 0);
+ pa_assert(*period_size > 0);
*periods = buffer_size / *period_size;
- assert(*periods > 0);
-
+ pa_assert(*periods > 0);
+
ret = 0;
-
+
finish:
- if (hwparams)
- snd_pcm_hw_params_free(hwparams);
-
+
return ret;
}
+int pa_alsa_set_sw_params(snd_pcm_t *pcm) {
+ snd_pcm_sw_params_t *swparams;
+ int err;
+
+ pa_assert(pcm);
+
+ snd_pcm_sw_params_alloca(&swparams);
+
+ if ((err = snd_pcm_sw_params_current(pcm, swparams) < 0)) {
+ pa_log_warn("Unable to determine current swparams: %s\n", snd_strerror(err));
+ return err;
+ }
+
+ if ((err = snd_pcm_sw_params_set_stop_threshold(pcm, swparams, (snd_pcm_uframes_t) -1)) < 0) {
+ pa_log_warn("Unable to set stop threshold: %s\n", snd_strerror(err));
+ return err;
+ }
+
+ if ((err = snd_pcm_sw_params_set_start_threshold(pcm, swparams, (snd_pcm_uframes_t) -1)) < 0) {
+ pa_log_warn("Unable to set start threshold: %s\n", snd_strerror(err));
+ return err;
+ }
+
+ if ((err = snd_pcm_sw_params(pcm, swparams)) < 0) {
+ pa_log_warn("Unable to set sw params: %s\n", snd_strerror(err));
+ return err;
+ }
+
+ return 0;
+}
+
int pa_alsa_prepare_mixer(snd_mixer_t *mixer, const char *dev) {
int err;
- assert(mixer && dev);
+ pa_assert(mixer);
+ pa_assert(dev);
if ((err = snd_mixer_attach(mixer, dev)) < 0) {
- pa_log_warn(__FILE__": Unable to attach to mixer %s: %s", dev, snd_strerror(err));
+ pa_log_warn("Unable to attach to mixer %s: %s", dev, snd_strerror(err));
return -1;
}
if ((err = snd_mixer_selem_register(mixer, NULL, NULL)) < 0) {
- pa_log_warn(__FILE__": Unable to register mixer: %s", snd_strerror(err));
+ pa_log_warn("Unable to register mixer: %s", snd_strerror(err));
return -1;
}
if ((err = snd_mixer_load(mixer)) < 0) {
- pa_log_warn(__FILE__": Unable to load mixer: %s", snd_strerror(err));
+ pa_log_warn("Unable to load mixer: %s", snd_strerror(err));
return -1;
}
snd_mixer_elem_t *pa_alsa_find_elem(snd_mixer_t *mixer, const char *name, const char *fallback) {
snd_mixer_elem_t *elem;
snd_mixer_selem_id_t *sid = NULL;
+
snd_mixer_selem_id_alloca(&sid);
- assert(mixer);
- assert(name);
+ pa_assert(mixer);
+ pa_assert(name);
snd_mixer_selem_id_set_name(sid, name);
if (!(elem = snd_mixer_find_selem(mixer, sid))) {
- pa_log_warn(__FILE__": Cannot find mixer control \"%s\".", snd_mixer_selem_id_get_name(sid));
+ pa_log_warn("Cannot find mixer control \"%s\".", snd_mixer_selem_id_get_name(sid));
if (fallback) {
snd_mixer_selem_id_set_name(sid, fallback);
-
+
if (!(elem = snd_mixer_find_selem(mixer, sid)))
- pa_log_warn(__FILE__": Cannot find fallback mixer control \"%s\".", snd_mixer_selem_id_get_name(sid));
+ pa_log_warn("Cannot find fallback mixer control \"%s\".", snd_mixer_selem_id_get_name(sid));
}
}
if (elem)
- pa_log_info(__FILE__": Using mixer control \"%s\".", snd_mixer_selem_id_get_name(sid));
+ pa_log_info("Using mixer control \"%s\".", snd_mixer_selem_id_get_name(sid));
return elem;
}