#endif
#include <sys/types.h>
-#include <limits.h>
#include <asoundlib.h>
#include <pulse/sample.h>
#include <pulse/xmalloc.h>
#include <pulse/timeval.h>
#include <pulse/util.h>
-#include <pulse/i18n.h>
+#include <pulse/utf8.h>
+#include <pulsecore/i18n.h>
#include <pulsecore/log.h>
#include <pulsecore/macro.h>
#include <pulsecore/core-util.h>
#include <pulsecore/atomic.h>
#include <pulsecore/core-error.h>
-#include <pulsecore/once.h>
+#include <pulsecore/thread.h>
+#include <pulsecore/conf-parser.h>
+#include <pulsecore/core-rtclock.h>
#include "alsa-util.h"
-
-#ifdef HAVE_HAL
-#include "hal-util.h"
-#endif
+#include "alsa-mixer.h"
#ifdef HAVE_UDEV
#include "udev-util.h"
#endif
-struct pa_alsa_fdlist {
- unsigned num_fds;
- struct pollfd *fds;
- /* This is a temporary buffer used to avoid lots of mallocs */
- struct pollfd *work_fds;
-
- snd_mixer_t *mixer;
-
- pa_mainloop_api *m;
- pa_defer_event *defer;
- pa_io_event **ios;
-
- pa_bool_t polled;
-
- void (*cb)(void *userdata);
- void *userdata;
-};
-
-static void io_cb(pa_mainloop_api*a, pa_io_event* e, int fd, pa_io_event_flags_t events, void *userdata) {
-
- struct pa_alsa_fdlist *fdl = userdata;
- int err;
- unsigned i;
- unsigned short revents;
-
- pa_assert(a);
- pa_assert(fdl);
- pa_assert(fdl->mixer);
- pa_assert(fdl->fds);
- pa_assert(fdl->work_fds);
-
- if (fdl->polled)
- return;
-
- fdl->polled = TRUE;
-
- memcpy(fdl->work_fds, fdl->fds, sizeof(struct pollfd) * fdl->num_fds);
-
- 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;
- if (events & PA_IO_EVENT_OUTPUT)
- fdl->work_fds[i].revents |= POLLOUT;
- if (events & PA_IO_EVENT_ERROR)
- fdl->work_fds[i].revents |= POLLERR;
- if (events & PA_IO_EVENT_HANGUP)
- fdl->work_fds[i].revents |= POLLHUP;
- break;
- }
- }
-
- pa_assert(i != fdl->num_fds);
-
- 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;
- }
-
- a->defer_enable(fdl->defer, 1);
-
- if (revents)
- snd_mixer_handle_events(fdl->mixer);
-}
-
-static void defer_cb(pa_mainloop_api*a, pa_defer_event* e, void *userdata) {
- struct pa_alsa_fdlist *fdl = userdata;
- unsigned num_fds, i;
- int err, n;
- struct pollfd *temp;
-
- pa_assert(a);
- pa_assert(fdl);
- pa_assert(fdl->mixer);
-
- a->defer_enable(fdl->defer, 0);
-
- if ((n = snd_mixer_poll_descriptors_count(fdl->mixer)) < 0) {
- pa_log("snd_mixer_poll_descriptors_count() failed: %s", snd_strerror(n));
- return;
- }
- num_fds = (unsigned) n;
-
- 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_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 ((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;
- }
-
- fdl->polled = FALSE;
-
- if (memcmp(fdl->fds, fdl->work_fds, sizeof(struct pollfd) * num_fds) == 0)
- return;
-
- if (fdl->ios) {
- 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 = NULL;
- }
- }
-
- if (!fdl->ios)
- fdl->ios = pa_xnew(pa_io_event*, num_fds);
-
- /* Swap pointers */
- temp = fdl->work_fds;
- fdl->work_fds = fdl->fds;
- fdl->fds = temp;
-
- fdl->num_fds = num_fds;
-
- 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);
-}
-
-struct pa_alsa_fdlist *pa_alsa_fdlist_new(void) {
- struct pa_alsa_fdlist *fdl;
-
- fdl = pa_xnew0(struct pa_alsa_fdlist, 1);
-
- fdl->num_fds = 0;
- fdl->fds = NULL;
- fdl->work_fds = NULL;
- fdl->mixer = NULL;
- fdl->m = NULL;
- fdl->defer = NULL;
- fdl->ios = NULL;
- fdl->polled = FALSE;
-
- return fdl;
-}
-
-void pa_alsa_fdlist_free(struct pa_alsa_fdlist *fdl) {
- pa_assert(fdl);
-
- if (fdl->defer) {
- pa_assert(fdl->m);
- fdl->m->defer_free(fdl->defer);
- }
-
- if (fdl->ios) {
- unsigned i;
- pa_assert(fdl->m);
- for (i = 0; i < fdl->num_fds; i++)
- fdl->m->io_free(fdl->ios[i]);
- pa_xfree(fdl->ios);
- }
-
- if (fdl->fds)
- pa_xfree(fdl->fds);
- if (fdl->work_fds)
- pa_xfree(fdl->work_fds);
-
- pa_xfree(fdl);
-}
-
-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->mixer = mixer_handle;
- fdl->m = m;
- fdl->defer = m->defer_new(m, defer_cb, fdl);
-
- return 0;
-}
-
static int set_format(snd_pcm_t *pcm_handle, snd_pcm_hw_params_t *hwparams, pa_sample_format_t *f) {
static const snd_pcm_format_t format_trans[] = {
PA_SAMPLE_S16RE,
PA_SAMPLE_ALAW,
PA_SAMPLE_ULAW,
- PA_SAMPLE_U8,
- PA_SAMPLE_INVALID
+ PA_SAMPLE_U8
};
- int i, ret;
+ unsigned i;
+ int ret;
pa_assert(pcm_handle);
+ pa_assert(hwparams);
pa_assert(f);
if ((ret = snd_pcm_hw_params_set_format(pcm_handle, hwparams, format_trans[*f])) >= 0)
return ret;
+ pa_log_debug("snd_pcm_hw_params_set_format(%s) failed: %s",
+ snd_pcm_format_description(format_trans[*f]),
+ pa_alsa_strerror(ret));
+
if (*f == PA_SAMPLE_FLOAT32BE)
*f = PA_SAMPLE_FLOAT32LE;
else if (*f == PA_SAMPLE_FLOAT32LE)
if ((ret = snd_pcm_hw_params_set_format(pcm_handle, hwparams, format_trans[*f])) >= 0)
return ret;
+ pa_log_debug("snd_pcm_hw_params_set_format(%s) failed: %s",
+ snd_pcm_format_description(format_trans[*f]),
+ pa_alsa_strerror(ret));
+
try_auto:
- for (i = 0; try_order[i] != PA_SAMPLE_INVALID; i++) {
+ for (i = 0; i < PA_ELEMENTSOF(try_order); i++) {
*f = try_order[i];
if ((ret = snd_pcm_hw_params_set_format(pcm_handle, hwparams, format_trans[*f])) >= 0)
return ret;
+
+ pa_log_debug("snd_pcm_hw_params_set_format(%s) failed: %s",
+ snd_pcm_format_description(format_trans[*f]),
+ pa_alsa_strerror(ret));
}
return -1;
}
+static int set_period_size(snd_pcm_t *pcm_handle, snd_pcm_hw_params_t *hwparams, snd_pcm_uframes_t size) {
+ snd_pcm_uframes_t s;
+ int d, ret;
+
+ pa_assert(pcm_handle);
+ pa_assert(hwparams);
+
+ s = size;
+ d = 0;
+ if (snd_pcm_hw_params_set_period_size_near(pcm_handle, hwparams, &s, &d) < 0) {
+ s = size;
+ d = -1;
+ if (snd_pcm_hw_params_set_period_size_near(pcm_handle, hwparams, &s, &d) < 0) {
+ s = size;
+ d = 1;
+ if ((ret = snd_pcm_hw_params_set_period_size_near(pcm_handle, hwparams, &s, &d)) < 0) {
+ pa_log_info("snd_pcm_hw_params_set_period_size_near() failed: %s", pa_alsa_strerror(ret));
+ return ret;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int set_buffer_size(snd_pcm_t *pcm_handle, snd_pcm_hw_params_t *hwparams, snd_pcm_uframes_t size) {
+ int ret;
+
+ pa_assert(pcm_handle);
+ pa_assert(hwparams);
+
+ if ((ret = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &size)) < 0) {
+ pa_log_info("snd_pcm_hw_params_set_buffer_size_near() failed: %s", pa_alsa_strerror(ret));
+ return ret;
+ }
+
+ return 0;
+}
+
/* Set the hardware parameters of the given ALSA device. Returns the
- * selected fragment settings in *period and *period_size */
+ * selected fragment settings in *buffer_size and *period_size. If tsched mode can be enabled */
int pa_alsa_set_hw_params(
snd_pcm_t *pcm_handle,
pa_sample_spec *ss,
- uint32_t *periods,
snd_pcm_uframes_t *period_size,
+ snd_pcm_uframes_t *buffer_size,
snd_pcm_uframes_t tsched_size,
- pa_bool_t *use_mmap,
- pa_bool_t *use_tsched,
- pa_bool_t require_exact_channel_number) {
+ bool *use_mmap,
+ bool *use_tsched,
+ bool require_exact_channel_number) {
int ret = -1;
- snd_pcm_uframes_t _period_size = period_size ? *period_size : 0;
- unsigned int _periods = periods ? *periods : 0;
- snd_pcm_uframes_t buffer_size;
- unsigned int r = ss->rate;
- unsigned int c = ss->channels;
- pa_sample_format_t f = ss->format;
- snd_pcm_hw_params_t *hwparams;
- pa_bool_t _use_mmap = use_mmap && *use_mmap;
- pa_bool_t _use_tsched = use_tsched && *use_tsched;
+ snd_pcm_hw_params_t *hwparams, *hwparams_copy;
int dir;
+ snd_pcm_uframes_t _period_size = period_size ? *period_size : 0;
+ snd_pcm_uframes_t _buffer_size = buffer_size ? *buffer_size : 0;
+ bool _use_mmap = use_mmap && *use_mmap;
+ bool _use_tsched = use_tsched && *use_tsched;
+ pa_sample_spec _ss = *ss;
pa_assert(pcm_handle);
pa_assert(ss);
snd_pcm_hw_params_alloca(&hwparams);
+ snd_pcm_hw_params_alloca(&hwparams_copy);
- if ((ret = snd_pcm_hw_params_any(pcm_handle, hwparams)) < 0)
+ if ((ret = snd_pcm_hw_params_any(pcm_handle, hwparams)) < 0) {
+ pa_log_debug("snd_pcm_hw_params_any() failed: %s", pa_alsa_strerror(ret));
goto finish;
+ }
- if ((ret = snd_pcm_hw_params_set_rate_resample(pcm_handle, hwparams, 0)) < 0)
+ if ((ret = snd_pcm_hw_params_set_rate_resample(pcm_handle, hwparams, 0)) < 0) {
+ pa_log_debug("snd_pcm_hw_params_set_rate_resample() failed: %s", pa_alsa_strerror(ret));
goto finish;
+ }
if (_use_mmap) {
/* 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)
+ if ((ret = snd_pcm_hw_params_set_access(pcm_handle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) {
+ pa_log_debug("snd_pcm_hw_params_set_access() failed: %s", pa_alsa_strerror(ret));
goto finish;
+ }
- _use_mmap = FALSE;
+ _use_mmap = false;
}
- } else if ((ret = snd_pcm_hw_params_set_access(pcm_handle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0)
+ } else if ((ret = snd_pcm_hw_params_set_access(pcm_handle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) {
+ pa_log_debug("snd_pcm_hw_params_set_access() failed: %s", pa_alsa_strerror(ret));
goto finish;
+ }
if (!_use_mmap)
- _use_tsched = FALSE;
+ _use_tsched = false;
+
+ if (!pa_alsa_pcm_is_hw(pcm_handle))
+ _use_tsched = false;
+
+ /* The PCM pointer is only updated with period granularity */
+ if (snd_pcm_hw_params_is_batch(hwparams)) {
+ pa_log_info("Disabling tsched mode since BATCH flag is set");
+ _use_tsched = false;
+ }
+
+#if (SND_LIB_VERSION >= ((1<<16)|(0<<8)|24)) /* API additions in 1.0.24 */
+ if (_use_tsched) {
+
+ /* try to disable period wakeups if hardware can do so */
+ if (snd_pcm_hw_params_can_disable_period_wakeup(hwparams)) {
+
+ if ((ret = snd_pcm_hw_params_set_period_wakeup(pcm_handle, hwparams, false)) < 0)
+ /* don't bail, keep going with default mode with period wakeups */
+ pa_log_debug("snd_pcm_hw_params_set_period_wakeup() failed: %s", pa_alsa_strerror(ret));
+ else
+ pa_log_info("Trying to disable ALSA period wakeups, using timers only");
+ } else
+ pa_log_info("cannot disable ALSA period wakeups");
+ }
+#endif
- if ((ret = set_format(pcm_handle, hwparams, &f)) < 0)
+ if ((ret = set_format(pcm_handle, hwparams, &_ss.format)) < 0)
goto finish;
- if ((ret = snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams, &r, NULL)) < 0)
+ if ((ret = snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams, &_ss.rate, NULL)) < 0) {
+ pa_log_debug("snd_pcm_hw_params_set_rate_near() failed: %s", pa_alsa_strerror(ret));
goto finish;
+ }
+
+ /* We ignore very small sampling rate deviations */
+ if (_ss.rate >= ss->rate*.95 && _ss.rate <= ss->rate*1.05)
+ _ss.rate = ss->rate;
if (require_exact_channel_number) {
- if ((ret = snd_pcm_hw_params_set_channels(pcm_handle, hwparams, c)) < 0)
+ if ((ret = snd_pcm_hw_params_set_channels(pcm_handle, hwparams, _ss.channels)) < 0) {
+ pa_log_debug("snd_pcm_hw_params_set_channels(%u) failed: %s", _ss.channels, pa_alsa_strerror(ret));
goto finish;
+ }
} else {
- if ((ret = snd_pcm_hw_params_set_channels_near(pcm_handle, hwparams, &c)) < 0)
+ unsigned int c = _ss.channels;
+
+ if ((ret = snd_pcm_hw_params_set_channels_near(pcm_handle, hwparams, &c)) < 0) {
+ pa_log_debug("snd_pcm_hw_params_set_channels_near(%u) failed: %s", _ss.channels, pa_alsa_strerror(ret));
goto finish;
+ }
+
+ _ss.channels = c;
}
- if ((ret = snd_pcm_hw_params_set_periods_integer(pcm_handle, hwparams)) < 0)
- goto finish;
+ if (_use_tsched && tsched_size > 0) {
+ _buffer_size = (snd_pcm_uframes_t) (((uint64_t) tsched_size * _ss.rate) / ss->rate);
+ _period_size = _buffer_size;
+ } else {
+ _period_size = (snd_pcm_uframes_t) (((uint64_t) _period_size * _ss.rate) / ss->rate);
+ _buffer_size = (snd_pcm_uframes_t) (((uint64_t) _buffer_size * _ss.rate) / ss->rate);
+ }
- if (_period_size && tsched_size && _periods) {
- /* Adjust the buffer sizes, if we didn't get the rate we were asking for */
- _period_size = (snd_pcm_uframes_t) (((uint64_t) _period_size * r) / ss->rate);
- tsched_size = (snd_pcm_uframes_t) (((uint64_t) tsched_size * r) / ss->rate);
+ if (_buffer_size > 0 || _period_size > 0) {
+ snd_pcm_uframes_t max_frames = 0;
- if (_use_tsched) {
- _period_size = tsched_size;
- _periods = 1;
+ if ((ret = snd_pcm_hw_params_get_buffer_size_max(hwparams, &max_frames)) < 0)
+ pa_log_warn("snd_pcm_hw_params_get_buffer_size_max() failed: %s", pa_alsa_strerror(ret));
+ else
+ pa_log_debug("Maximum hw buffer size is %lu ms", (long unsigned) (max_frames * PA_MSEC_PER_SEC / _ss.rate));
- pa_assert_se(snd_pcm_hw_params_get_buffer_size_max(hwparams, &buffer_size) == 0);
- pa_log_debug("Maximum hw buffer size is %u ms", (unsigned) buffer_size * 1000 / r);
- }
+ /* Some ALSA drivers really don't like if we set the buffer
+ * size first and the number of periods second (which would
+ * make a lot more sense to me). So, try a few combinations
+ * before we give up. */
+
+ if (_buffer_size > 0 && _period_size > 0) {
+ snd_pcm_hw_params_copy(hwparams_copy, hwparams);
- buffer_size = _periods * _period_size;
+ /* First try: set buffer size first, followed by period size */
+ if (set_buffer_size(pcm_handle, hwparams_copy, _buffer_size) >= 0 &&
+ set_period_size(pcm_handle, hwparams_copy, _period_size) >= 0 &&
+ snd_pcm_hw_params(pcm_handle, hwparams_copy) >= 0) {
+ pa_log_debug("Set buffer size first (to %lu samples), period size second (to %lu samples).", (unsigned long) _buffer_size, (unsigned long) _period_size);
+ goto success;
+ }
- if (_periods > 0) {
+ /* Second try: set period size first, followed by buffer size */
+ if (set_period_size(pcm_handle, hwparams_copy, _period_size) >= 0 &&
+ set_buffer_size(pcm_handle, hwparams_copy, _buffer_size) >= 0 &&
+ snd_pcm_hw_params(pcm_handle, hwparams_copy) >= 0) {
+ pa_log_debug("Set period size first (to %lu samples), buffer size second (to %lu samples).", (unsigned long) _period_size, (unsigned long) _buffer_size);
+ goto success;
+ }
+ }
- /* First we pass 0 as direction to get exactly what we asked
- * for. That this is necessary is presumably a bug in ALSA */
+ if (_buffer_size > 0) {
+ snd_pcm_hw_params_copy(hwparams_copy, hwparams);
- dir = 0;
- if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0) {
- dir = 1;
- if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0) {
- dir = -1;
- if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0)
- goto finish;
- }
+ /* Third try: set only buffer size */
+ if (set_buffer_size(pcm_handle, hwparams_copy, _buffer_size) >= 0 &&
+ snd_pcm_hw_params(pcm_handle, hwparams_copy) >= 0) {
+ pa_log_debug("Set only buffer size (to %lu samples).", (unsigned long) _buffer_size);
+ goto success;
}
}
- if (_period_size > 0)
- if ((ret = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &buffer_size)) < 0)
- goto finish;
+ if (_period_size > 0) {
+ snd_pcm_hw_params_copy(hwparams_copy, hwparams);
+
+ /* Fourth try: set only period size */
+ if (set_period_size(pcm_handle, hwparams_copy, _period_size) >= 0 &&
+ snd_pcm_hw_params(pcm_handle, hwparams_copy) >= 0) {
+ pa_log_debug("Set only period size (to %lu samples).", (unsigned long) _period_size);
+ goto success;
+ }
+ }
}
- if ((ret = snd_pcm_hw_params(pcm_handle, hwparams)) < 0)
+ pa_log_debug("Set neither period nor buffer size.");
+
+ /* Last chance, set nothing */
+ if ((ret = snd_pcm_hw_params(pcm_handle, hwparams)) < 0) {
+ pa_log_info("snd_pcm_hw_params failed: %s", pa_alsa_strerror(ret));
goto finish;
+ }
+
+success:
- if (ss->rate != r)
- pa_log_info("Device %s doesn't support %u Hz, changed to %u Hz.", snd_pcm_name(pcm_handle), ss->rate, r);
+ if (ss->rate != _ss.rate)
+ pa_log_info("Device %s doesn't support %u Hz, changed to %u Hz.", snd_pcm_name(pcm_handle), ss->rate, _ss.rate);
- if (ss->channels != c)
- pa_log_info("Device %s doesn't support %u channels, changed to %u.", snd_pcm_name(pcm_handle), ss->channels, c);
+ if (ss->channels != _ss.channels)
+ pa_log_info("Device %s doesn't support %u channels, changed to %u.", snd_pcm_name(pcm_handle), ss->channels, _ss.channels);
- if (ss->format != f)
- pa_log_info("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));
+ if (ss->format != _ss.format)
+ pa_log_info("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(_ss.format));
- if ((ret = snd_pcm_prepare(pcm_handle)) < 0)
+ if ((ret = snd_pcm_prepare(pcm_handle)) < 0) {
+ pa_log_info("snd_pcm_prepare() failed: %s", pa_alsa_strerror(ret));
goto finish;
+ }
+
+ if ((ret = snd_pcm_hw_params_current(pcm_handle, hwparams)) < 0) {
+ pa_log_info("snd_pcm_hw_params_current() failed: %s", pa_alsa_strerror(ret));
+ goto finish;
+ }
if ((ret = snd_pcm_hw_params_get_period_size(hwparams, &_period_size, &dir)) < 0 ||
- (ret = snd_pcm_hw_params_get_periods(hwparams, &_periods, &dir)) < 0)
+ (ret = snd_pcm_hw_params_get_buffer_size(hwparams, &_buffer_size)) < 0) {
+ pa_log_info("snd_pcm_hw_params_get_{period|buffer}_size() failed: %s", pa_alsa_strerror(ret));
goto finish;
+ }
- /* If the sample rate deviates too much, we need to resample */
- if (r < ss->rate*.95 || r > ss->rate*1.05)
- ss->rate = r;
- ss->channels = (uint8_t) c;
- ss->format = f;
+#if (SND_LIB_VERSION >= ((1<<16)|(0<<8)|24)) /* API additions in 1.0.24 */
+ if (_use_tsched) {
+ unsigned int no_wakeup;
+ /* see if period wakeups were disabled */
+ snd_pcm_hw_params_get_period_wakeup(pcm_handle, hwparams, &no_wakeup);
+ if (no_wakeup == 0)
+ pa_log_info("ALSA period wakeups disabled");
+ else
+ pa_log_info("ALSA period wakeups were not disabled");
+ }
+#endif
+
+ ss->rate = _ss.rate;
+ ss->channels = _ss.channels;
+ ss->format = _ss.format;
- pa_assert(_periods > 0);
pa_assert(_period_size > 0);
+ pa_assert(_buffer_size > 0);
- if (periods)
- *periods = _periods;
+ if (buffer_size)
+ *buffer_size = _buffer_size;
if (period_size)
*period_size = _period_size;
ret = 0;
- snd_pcm_nonblock(pcm_handle, 1);
-
finish:
return ret;
}
-int pa_alsa_set_sw_params(snd_pcm_t *pcm, snd_pcm_uframes_t avail_min) {
+int pa_alsa_set_sw_params(snd_pcm_t *pcm, snd_pcm_uframes_t avail_min, bool period_event) {
snd_pcm_sw_params_t *swparams;
snd_pcm_uframes_t boundary;
int err;
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));
+ pa_log_warn("Unable to determine current swparams: %s\n", pa_alsa_strerror(err));
return err;
}
- if ((err = snd_pcm_sw_params_set_period_event(pcm, swparams, 0)) < 0) {
- pa_log_warn("Unable to disable period event: %s\n", snd_strerror(err));
+ if ((err = snd_pcm_sw_params_set_period_event(pcm, swparams, period_event)) < 0) {
+ pa_log_warn("Unable to disable period event: %s\n", pa_alsa_strerror(err));
return err;
}
if ((err = snd_pcm_sw_params_set_tstamp_mode(pcm, swparams, SND_PCM_TSTAMP_ENABLE)) < 0) {
- pa_log_warn("Unable to enable time stamping: %s\n", snd_strerror(err));
+ pa_log_warn("Unable to enable time stamping: %s\n", pa_alsa_strerror(err));
return err;
}
if ((err = snd_pcm_sw_params_get_boundary(swparams, &boundary)) < 0) {
- pa_log_warn("Unable to get boundary: %s\n", snd_strerror(err));
+ pa_log_warn("Unable to get boundary: %s\n", pa_alsa_strerror(err));
return err;
}
if ((err = snd_pcm_sw_params_set_stop_threshold(pcm, swparams, boundary)) < 0) {
- pa_log_warn("Unable to set stop threshold: %s\n", snd_strerror(err));
+ pa_log_warn("Unable to set stop threshold: %s\n", pa_alsa_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));
+ pa_log_warn("Unable to set start threshold: %s\n", pa_alsa_strerror(err));
return err;
}
if ((err = snd_pcm_sw_params_set_avail_min(pcm, swparams, avail_min)) < 0) {
- pa_log_error("snd_pcm_sw_params_set_avail_min() failed: %s", snd_strerror(err));
+ pa_log_error("snd_pcm_sw_params_set_avail_min() failed: %s", pa_alsa_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));
+ pa_log_warn("Unable to set sw params: %s\n", pa_alsa_strerror(err));
return err;
}
return 0;
}
-static const struct pa_alsa_profile_info device_table[] = {
- {{ 1, { PA_CHANNEL_POSITION_MONO }},
- "hw",
- N_("Analog Mono"),
- "analog-mono",
- 1 },
-
- {{ 2, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT }},
- "front",
- N_("Analog Stereo"),
- "analog-stereo",
- 10 },
-
- {{ 2, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT }},
- "iec958",
- N_("Digital Stereo (IEC958)"),
- "iec958-stereo",
- 5 },
-
- {{ 2, { PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT }},
- "hdmi",
- N_("Digital Stereo (HDMI)"),
- "hdmi-stereo",
- 4 },
-
- {{ 4, { PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
- PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT }},
- "surround40",
- N_("Analog Surround 4.0"),
- "analog-surround-40",
- 7 },
-
- {{ 4, { PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
- PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT }},
- "a52",
- N_("Digital Surround 4.0 (IEC958/AC3)"),
- "iec958-ac3-surround-40",
- 2 },
-
- {{ 5, { PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
- PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
- PA_CHANNEL_POSITION_LFE }},
- "surround41",
- N_("Analog Surround 4.1"),
- "analog-surround-41",
- 7 },
-
- {{ 5, { PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
- PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
- PA_CHANNEL_POSITION_CENTER }},
- "surround50",
- N_("Analog Surround 5.0"),
- "analog-surround-50",
- 7 },
-
- {{ 6, { PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
- PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
- PA_CHANNEL_POSITION_CENTER, PA_CHANNEL_POSITION_LFE }},
- "surround51",
- N_("Analog Surround 5.1"),
- "analog-surround-51",
- 8 },
-
- {{ 6, { PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
- PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
- PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE}},
- "a52",
- N_("Digital Surround 5.1 (IEC958/AC3)"),
- "iec958-ac3-surround-51",
- 3 },
-
- {{ 8, { PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
- PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
- PA_CHANNEL_POSITION_CENTER, PA_CHANNEL_POSITION_LFE,
- PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT }},
- "surround71",
- N_("Analog Surround 7.1"),
- "analog-surround-71",
- 7 },
-
- {{ 0, { 0 }}, NULL, NULL, NULL, 0 }
-};
-
snd_pcm_t *pa_alsa_open_by_device_id_auto(
const char *dev_id,
char **dev,
pa_sample_spec *ss,
pa_channel_map* map,
int mode,
- uint32_t *nfrags,
snd_pcm_uframes_t *period_size,
+ snd_pcm_uframes_t *buffer_size,
snd_pcm_uframes_t tsched_size,
- pa_bool_t *use_mmap,
- pa_bool_t *use_tsched,
- const pa_alsa_profile_info **profile) {
+ bool *use_mmap,
+ bool *use_tsched,
+ pa_alsa_profile_set *ps,
+ pa_alsa_mapping **mapping) {
- int i;
- int direction = 1;
char *d;
snd_pcm_t *pcm_handle;
+ void *state;
+ pa_alsa_mapping *m;
pa_assert(dev_id);
pa_assert(dev);
pa_assert(ss);
pa_assert(map);
- pa_assert(nfrags);
- pa_assert(period_size);
+ pa_assert(ps);
/* First we try to find a device string with a superset of the
- * requested channel map and open it without the plug: prefix. We
- * iterate through our device table from top to bottom and take
- * the first that matches. If we didn't find a working device that
- * way, we iterate backwards, and check all devices that do not
- * provide a superset of the requested channel map.*/
-
- i = 0;
- for (;;) {
-
- if ((direction > 0) == pa_channel_map_superset(&device_table[i].map, map)) {
- pa_sample_spec try_ss;
-
- pa_log_debug("Checking for %s (%s)", device_table[i].name, device_table[i].alsa_name);
-
- d = pa_sprintf_malloc("%s:%s", device_table[i].alsa_name, dev_id);
-
- try_ss.channels = device_table[i].map.channels;
- try_ss.rate = ss->rate;
- try_ss.format = ss->format;
-
- pcm_handle = pa_alsa_open_by_device_string(
- d,
- dev,
- &try_ss,
- map,
- mode,
- nfrags,
- period_size,
- tsched_size,
- use_mmap,
- use_tsched,
- TRUE);
-
- pa_xfree(d);
-
- if (pcm_handle) {
-
- *ss = try_ss;
- *map = device_table[i].map;
- pa_assert(map->channels == ss->channels);
-
- if (profile)
- *profile = &device_table[i];
-
- return pcm_handle;
- }
- }
-
- if (direction > 0) {
- if (!device_table[i+1].alsa_name) {
- /* OK, so we are at the end of our list. Let's turn
- * back. */
- direction = -1;
- } else {
- /* We are not at the end of the list, so let's simply
- * try the next entry */
- i++;
- }
+ * requested channel map. We iterate through our device table from
+ * top to bottom and take the first that matches. If we didn't
+ * find a working device that way, we iterate backwards, and check
+ * all devices that do not provide a superset of the requested
+ * channel map.*/
+
+ PA_HASHMAP_FOREACH(m, ps->mappings, state) {
+ if (!pa_channel_map_superset(&m->channel_map, map))
+ continue;
+
+ pa_log_debug("Checking for superset %s (%s)", m->name, m->device_strings[0]);
+
+ pcm_handle = pa_alsa_open_by_device_id_mapping(
+ dev_id,
+ dev,
+ ss,
+ map,
+ mode,
+ period_size,
+ buffer_size,
+ tsched_size,
+ use_mmap,
+ use_tsched,
+ m);
+
+ if (pcm_handle) {
+ if (mapping)
+ *mapping = m;
+
+ return pcm_handle;
}
+ }
- if (direction < 0) {
-
- if (device_table[i+1].alsa_name &&
- device_table[i].map.channels == device_table[i+1].map.channels) {
-
- /* OK, the next entry has the same number of channels,
- * let's try it */
- i++;
-
- } else {
- /* Hmm, so the next entry does not have the same
- * number of channels, so let's go backwards until we
- * find the next entry with a different number of
- * channels */
-
- for (i--; i >= 0; i--)
- if (device_table[i].map.channels != device_table[i+1].map.channels)
- break;
-
- /* Hmm, there is no entry with a different number of
- * entries, then we're done */
- if (i < 0)
- break;
-
- /* OK, now lets find go back as long as we have the same number of channels */
- for (; i > 0; i--)
- if (device_table[i].map.channels != device_table[i-1].map.channels)
- break;
- }
+ PA_HASHMAP_FOREACH_BACKWARDS(m, ps->mappings, state) {
+ if (pa_channel_map_superset(&m->channel_map, map))
+ continue;
+
+ pa_log_debug("Checking for subset %s (%s)", m->name, m->device_strings[0]);
+
+ pcm_handle = pa_alsa_open_by_device_id_mapping(
+ dev_id,
+ dev,
+ ss,
+ map,
+ mode,
+ period_size,
+ buffer_size,
+ tsched_size,
+ use_mmap,
+ use_tsched,
+ m);
+
+ if (pcm_handle) {
+ if (mapping)
+ *mapping = m;
+
+ return pcm_handle;
}
}
- /* OK, we didn't find any good device, so let's try the raw plughw: stuff */
-
+ /* OK, we didn't find any good device, so let's try the raw hw: stuff */
d = pa_sprintf_malloc("hw:%s", dev_id);
pa_log_debug("Trying %s as last resort...", d);
- pcm_handle = pa_alsa_open_by_device_string(d, dev, ss, map, mode, nfrags, period_size, tsched_size, use_mmap, use_tsched, FALSE);
+ pcm_handle = pa_alsa_open_by_device_string(
+ d,
+ dev,
+ ss,
+ map,
+ mode,
+ period_size,
+ buffer_size,
+ tsched_size,
+ use_mmap,
+ use_tsched,
+ false);
pa_xfree(d);
- if (pcm_handle && profile)
- *profile = NULL;
+ if (pcm_handle && mapping)
+ *mapping = NULL;
return pcm_handle;
}
-snd_pcm_t *pa_alsa_open_by_device_id_profile(
+snd_pcm_t *pa_alsa_open_by_device_id_mapping(
const char *dev_id,
char **dev,
pa_sample_spec *ss,
pa_channel_map* map,
int mode,
- uint32_t *nfrags,
snd_pcm_uframes_t *period_size,
+ snd_pcm_uframes_t *buffer_size,
snd_pcm_uframes_t tsched_size,
- pa_bool_t *use_mmap,
- pa_bool_t *use_tsched,
- const pa_alsa_profile_info *profile) {
+ bool *use_mmap,
+ bool *use_tsched,
+ pa_alsa_mapping *m) {
- char *d;
snd_pcm_t *pcm_handle;
pa_sample_spec try_ss;
+ pa_channel_map try_map;
pa_assert(dev_id);
pa_assert(dev);
pa_assert(ss);
pa_assert(map);
- pa_assert(nfrags);
- pa_assert(period_size);
- pa_assert(profile);
-
- d = pa_sprintf_malloc("%s:%s", profile->alsa_name, dev_id);
+ pa_assert(m);
- try_ss.channels = profile->map.channels;
+ try_ss.channels = m->channel_map.channels;
try_ss.rate = ss->rate;
try_ss.format = ss->format;
+ try_map = m->channel_map;
- pcm_handle = pa_alsa_open_by_device_string(
- d,
+ pcm_handle = pa_alsa_open_by_template(
+ m->device_strings,
+ dev_id,
dev,
&try_ss,
- map,
+ &try_map,
mode,
- nfrags,
period_size,
+ buffer_size,
tsched_size,
use_mmap,
use_tsched,
- TRUE);
-
- pa_xfree(d);
+ pa_channel_map_valid(&m->channel_map) /* Query the channel count if we don't know what we want */);
if (!pcm_handle)
return NULL;
*ss = try_ss;
- *map = profile->map;
+ *map = try_map;
pa_assert(map->channels == ss->channels);
return pcm_handle;
pa_sample_spec *ss,
pa_channel_map* map,
int mode,
- uint32_t *nfrags,
snd_pcm_uframes_t *period_size,
+ snd_pcm_uframes_t *buffer_size,
snd_pcm_uframes_t tsched_size,
- pa_bool_t *use_mmap,
- pa_bool_t *use_tsched,
- pa_bool_t require_exact_channel_number) {
+ bool *use_mmap,
+ bool *use_tsched,
+ bool require_exact_channel_number) {
int err;
char *d;
snd_pcm_t *pcm_handle;
- pa_bool_t reformat = FALSE;
+ bool reformat = false;
pa_assert(device);
pa_assert(ss);
d = pa_xstrdup(device);
- for (;;) {
- pa_log_debug("Trying %s %s SND_PCM_NO_AUTO_FORMAT ...", d, reformat ? "without" : "with");
-
- /* We don't pass SND_PCM_NONBLOCK here, since alsa-lib <=
- * 1.0.17a would then ignore the SND_PCM_NO_xxx flags. Instead
- * we enable nonblock mode afterwards via
- * snd_pcm_nonblock(). Also see
- * http://mailman.alsa-project.org/pipermail/alsa-devel/2008-August/010258.html */
-
- if ((err = snd_pcm_open(&pcm_handle, d, mode,
- /*SND_PCM_NONBLOCK|*/
- SND_PCM_NO_AUTO_RESAMPLE|
- SND_PCM_NO_AUTO_CHANNELS|
- (reformat ? 0 : SND_PCM_NO_AUTO_FORMAT))) < 0) {
- pa_log_info("Error opening PCM device %s: %s", d, snd_strerror(err));
- goto fail;
- }
-
- if ((err = pa_alsa_set_hw_params(pcm_handle, ss, nfrags, period_size, tsched_size, use_mmap, use_tsched, require_exact_channel_number)) < 0) {
-
- if (!reformat) {
- reformat = TRUE;
-
- snd_pcm_close(pcm_handle);
- continue;
- }
-
- /* Hmm, some hw is very exotic, so we retry with plug, if without it didn't work */
-
- if (!pa_startswith(d, "plug:") && !pa_startswith(d, "plughw:")) {
- char *t;
-
- t = pa_sprintf_malloc("plug:%s", d);
- pa_xfree(d);
- d = t;
-
- reformat = FALSE;
-
- snd_pcm_close(pcm_handle);
- continue;
- }
-
- pa_log_info("Failed to set hardware parameters on %s: %s", d, snd_strerror(err));
- snd_pcm_close(pcm_handle);
-
- goto fail;
- }
-
- if (dev)
- *dev = d;
- else
- pa_xfree(d);
-
- if (ss->channels != map->channels)
- pa_channel_map_init_extend(map, ss->channels, PA_CHANNEL_MAP_ALSA);
-
- return pcm_handle;
- }
-
-fail:
- pa_xfree(d);
-
- return NULL;
-}
-
-int pa_alsa_probe_profiles(
- const char *dev_id,
- const pa_sample_spec *ss,
- void (*cb)(const pa_alsa_profile_info *sink, const pa_alsa_profile_info *source, void *userdata),
- void *userdata) {
-
- const pa_alsa_profile_info *i;
-
- pa_assert(dev_id);
- pa_assert(ss);
- pa_assert(cb);
-
- /* We try each combination of playback/capture. We also try to
- * open only for capture resp. only for sink. Don't get confused
- * by the trailing entry in device_table we use for this! */
-
- for (i = device_table; i < device_table + PA_ELEMENTSOF(device_table); i++) {
- const pa_alsa_profile_info *j;
- snd_pcm_t *pcm_i = NULL;
-
- if (i->alsa_name) {
- char *id;
- pa_sample_spec try_ss;
- pa_channel_map try_map;
-
- pa_log_debug("Checking for playback on %s (%s)", i->name, i->alsa_name);
- id = pa_sprintf_malloc("%s:%s", i->alsa_name, dev_id);
-
- try_ss = *ss;
- try_ss.channels = i->map.channels;
- try_map = i->map;
-
- pcm_i = pa_alsa_open_by_device_string(
- id, NULL,
- &try_ss, &try_map,
- SND_PCM_STREAM_PLAYBACK,
- NULL, NULL, 0, NULL, NULL,
- TRUE);
-
- pa_xfree(id);
-
- if (!pcm_i)
- continue;
- }
-
- for (j = device_table; j < device_table + PA_ELEMENTSOF(device_table); j++) {
- snd_pcm_t *pcm_j = NULL;
-
- if (j->alsa_name) {
- char *jd;
- pa_sample_spec try_ss;
- pa_channel_map try_map;
-
- pa_log_debug("Checking for capture on %s (%s)", j->name, j->alsa_name);
- jd = pa_sprintf_malloc("%s:%s", j->alsa_name, dev_id);
-
- try_ss = *ss;
- try_ss.channels = j->map.channels;
- try_map = j->map;
-
- pcm_j = pa_alsa_open_by_device_string(
- jd, NULL,
- &try_ss, &try_map,
- SND_PCM_STREAM_CAPTURE,
- NULL, NULL, 0, NULL, NULL,
- TRUE);
-
- pa_xfree(jd);
-
- if (!pcm_j)
- continue;
- }
-
- if (pcm_j)
- snd_pcm_close(pcm_j);
-
- if (i->alsa_name || j->alsa_name)
- cb(i->alsa_name ? i : NULL,
- j->alsa_name ? j : NULL, userdata);
- }
-
- if (pcm_i)
- snd_pcm_close(pcm_i);
- }
-
- return TRUE;
-}
-
-int pa_alsa_prepare_mixer(snd_mixer_t *mixer, const char *dev) {
- int err;
-
- pa_assert(mixer);
- pa_assert(dev);
-
- if ((err = snd_mixer_attach(mixer, dev)) < 0) {
- pa_log_info("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("Unable to register mixer: %s", snd_strerror(err));
- return -1;
- }
-
- if ((err = snd_mixer_load(mixer)) < 0) {
- pa_log_warn("Unable to load mixer: %s", snd_strerror(err));
- return -1;
- }
-
- pa_log_info("Successfully attached to mixer '%s'", dev);
-
- return 0;
-}
-
-static pa_bool_t elem_has_volume(snd_mixer_elem_t *elem, pa_bool_t playback) {
- pa_assert(elem);
-
- if (playback && snd_mixer_selem_has_playback_volume(elem))
- return TRUE;
-
- if (!playback && snd_mixer_selem_has_capture_volume(elem))
- return TRUE;
-
- return FALSE;
-}
-
-static pa_bool_t elem_has_switch(snd_mixer_elem_t *elem, pa_bool_t playback) {
- pa_assert(elem);
-
- if (playback && snd_mixer_selem_has_playback_switch(elem))
- return TRUE;
-
- if (!playback && snd_mixer_selem_has_capture_switch(elem))
- return TRUE;
-
- return FALSE;
-}
-
-snd_mixer_elem_t *pa_alsa_find_elem(snd_mixer_t *mixer, const char *name, const char *fallback, pa_bool_t playback) {
- snd_mixer_elem_t *elem = NULL, *fallback_elem = NULL;
- snd_mixer_selem_id_t *sid = NULL;
-
- snd_mixer_selem_id_alloca(&sid);
-
- pa_assert(mixer);
- pa_assert(name);
-
- snd_mixer_selem_id_set_name(sid, name);
- snd_mixer_selem_id_set_index(sid, 0);
-
- if ((elem = snd_mixer_find_selem(mixer, sid))) {
-
- if (elem_has_volume(elem, playback) &&
- elem_has_switch(elem, playback))
- goto success;
-
- if (!elem_has_volume(elem, playback) &&
- !elem_has_switch(elem, playback))
- elem = NULL;
- }
-
- pa_log_info("Cannot find mixer control \"%s\" or mixer control is no combination of switch/volume.", snd_mixer_selem_id_get_name(sid));
-
- if (fallback) {
- snd_mixer_selem_id_set_name(sid, fallback);
- snd_mixer_selem_id_set_index(sid, 0);
-
- if ((fallback_elem = snd_mixer_find_selem(mixer, sid))) {
-
- if (elem_has_volume(fallback_elem, playback) &&
- elem_has_switch(fallback_elem, playback)) {
- elem = fallback_elem;
- goto success;
- }
-
- if (!elem_has_volume(fallback_elem, playback) &&
- !elem_has_switch(fallback_elem, playback))
- fallback_elem = NULL;
- }
-
- pa_log_info("Cannot find fallback mixer control \"%s\" or mixer control is no combination of switch/volume.", snd_mixer_selem_id_get_name(sid));
- }
-
- if (elem && fallback_elem) {
-
- /* Hmm, so we have both elements, but neither has both mute
- * and volume. Let's prefer the one with the volume */
-
- if (elem_has_volume(elem, playback))
- goto success;
-
- if (elem_has_volume(fallback_elem, playback)) {
- elem = fallback_elem;
- goto success;
- }
- }
-
- if (!elem && fallback_elem)
- elem = fallback_elem;
-
-success:
-
- if (elem)
- pa_log_info("Using mixer control \"%s\".", snd_mixer_selem_id_get_name(sid));
-
- return elem;
-}
-
-int pa_alsa_find_mixer_and_elem(
- snd_pcm_t *pcm,
- snd_mixer_t **_m,
- snd_mixer_elem_t **_e,
- const char *control_name) {
-
- int err;
- snd_mixer_t *m;
- snd_mixer_elem_t *e;
- pa_bool_t found = FALSE;
- const char *dev;
-
- pa_assert(pcm);
- pa_assert(_m);
- pa_assert(_e);
-
- if ((err = snd_mixer_open(&m, 0)) < 0) {
- pa_log("Error opening mixer: %s", snd_strerror(err));
- return -1;
- }
-
- /* First, try by name */
- if ((dev = snd_pcm_name(pcm)))
- if (pa_alsa_prepare_mixer(m, dev) >= 0)
- found = TRUE;
-
- /* Then, try by card index */
- if (!found) {
- snd_pcm_info_t* info;
- snd_pcm_info_alloca(&info);
-
- if (snd_pcm_info(pcm, info) >= 0) {
- char *md;
- int card_idx;
-
- if ((card_idx = snd_pcm_info_get_card(info)) >= 0) {
-
- md = pa_sprintf_malloc("hw:%i", card_idx);
-
- if (!dev || !pa_streq(dev, md))
- if (pa_alsa_prepare_mixer(m, md) >= 0)
- found = TRUE;
-
- pa_xfree(md);
- }
- }
- }
-
- if (!found) {
- snd_mixer_close(m);
- return -1;
- }
-
- switch (snd_pcm_stream(pcm)) {
-
- case SND_PCM_STREAM_PLAYBACK:
- if (control_name)
- e = pa_alsa_find_elem(m, control_name, NULL, TRUE);
- else
- e = pa_alsa_find_elem(m, "Master", "PCM", TRUE);
- break;
-
- case SND_PCM_STREAM_CAPTURE:
- if (control_name)
- e = pa_alsa_find_elem(m, control_name, NULL, FALSE);
- else
- e = pa_alsa_find_elem(m, "Capture", "Mic", FALSE);
- break;
-
- default:
- pa_assert_not_reached();
- }
-
- if (!e) {
- snd_mixer_close(m);
- return -1;
- }
+ for (;;) {
+ pa_log_debug("Trying %s %s SND_PCM_NO_AUTO_FORMAT ...", d, reformat ? "without" : "with");
- pa_assert(e && m);
+ if ((err = snd_pcm_open(&pcm_handle, d, mode,
+ SND_PCM_NONBLOCK|
+ SND_PCM_NO_AUTO_RESAMPLE|
+ SND_PCM_NO_AUTO_CHANNELS|
+ (reformat ? 0 : SND_PCM_NO_AUTO_FORMAT))) < 0) {
+ pa_log_info("Error opening PCM device %s: %s", d, pa_alsa_strerror(err));
+ goto fail;
+ }
- *_m = m;
- *_e = e;
+ pa_log_debug("Managed to open %s", d);
- return 0;
-}
+ if ((err = pa_alsa_set_hw_params(
+ pcm_handle,
+ ss,
+ period_size,
+ buffer_size,
+ tsched_size,
+ use_mmap,
+ use_tsched,
+ require_exact_channel_number)) < 0) {
-static const snd_mixer_selem_channel_id_t alsa_channel_ids[PA_CHANNEL_POSITION_MAX] = {
- [PA_CHANNEL_POSITION_MONO] = SND_MIXER_SCHN_MONO, /* The ALSA name is just an alias! */
-
- [PA_CHANNEL_POSITION_FRONT_CENTER] = SND_MIXER_SCHN_FRONT_CENTER,
- [PA_CHANNEL_POSITION_FRONT_LEFT] = SND_MIXER_SCHN_FRONT_LEFT,
- [PA_CHANNEL_POSITION_FRONT_RIGHT] = SND_MIXER_SCHN_FRONT_RIGHT,
-
- [PA_CHANNEL_POSITION_REAR_CENTER] = SND_MIXER_SCHN_REAR_CENTER,
- [PA_CHANNEL_POSITION_REAR_LEFT] = SND_MIXER_SCHN_REAR_LEFT,
- [PA_CHANNEL_POSITION_REAR_RIGHT] = SND_MIXER_SCHN_REAR_RIGHT,
-
- [PA_CHANNEL_POSITION_LFE] = SND_MIXER_SCHN_WOOFER,
-
- [PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER] = SND_MIXER_SCHN_UNKNOWN,
-
- [PA_CHANNEL_POSITION_SIDE_LEFT] = SND_MIXER_SCHN_SIDE_LEFT,
- [PA_CHANNEL_POSITION_SIDE_RIGHT] = SND_MIXER_SCHN_SIDE_RIGHT,
-
- [PA_CHANNEL_POSITION_AUX0] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX1] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX2] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX3] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX4] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX5] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX6] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX7] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX8] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX9] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX10] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX11] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX12] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX13] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX14] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX15] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX16] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX17] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX18] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX19] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX20] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX21] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX22] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX23] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX24] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX25] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX26] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX27] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX28] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX29] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX30] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_AUX31] = SND_MIXER_SCHN_UNKNOWN,
-
- [PA_CHANNEL_POSITION_TOP_CENTER] = SND_MIXER_SCHN_UNKNOWN,
-
- [PA_CHANNEL_POSITION_TOP_FRONT_CENTER] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_TOP_FRONT_LEFT] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_TOP_FRONT_RIGHT] = SND_MIXER_SCHN_UNKNOWN,
-
- [PA_CHANNEL_POSITION_TOP_REAR_CENTER] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_TOP_REAR_LEFT] = SND_MIXER_SCHN_UNKNOWN,
- [PA_CHANNEL_POSITION_TOP_REAR_RIGHT] = SND_MIXER_SCHN_UNKNOWN
-};
-
-
-int pa_alsa_calc_mixer_map(snd_mixer_elem_t *elem, const pa_channel_map *channel_map, snd_mixer_selem_channel_id_t mixer_map[], pa_bool_t playback) {
- unsigned i;
- pa_bool_t alsa_channel_used[SND_MIXER_SCHN_LAST];
- pa_bool_t mono_used = FALSE;
+ if (!reformat) {
+ reformat = true;
- pa_assert(elem);
- pa_assert(channel_map);
- pa_assert(mixer_map);
+ snd_pcm_close(pcm_handle);
+ continue;
+ }
- memset(&alsa_channel_used, 0, sizeof(alsa_channel_used));
+ /* Hmm, some hw is very exotic, so we retry with plug, if without it didn't work */
+ if (!pa_startswith(d, "plug:") && !pa_startswith(d, "plughw:")) {
+ char *t;
- if (channel_map->channels > 1 &&
- ((playback && snd_mixer_selem_has_playback_volume_joined(elem)) ||
- (!playback && snd_mixer_selem_has_capture_volume_joined(elem)))) {
- pa_log_info("ALSA device lacks independant volume controls for each channel.");
- return -1;
- }
+ t = pa_sprintf_malloc("plug:%s", d);
+ pa_xfree(d);
+ d = t;
- for (i = 0; i < channel_map->channels; i++) {
- snd_mixer_selem_channel_id_t id;
- pa_bool_t is_mono;
+ reformat = false;
- is_mono = channel_map->map[i] == PA_CHANNEL_POSITION_MONO;
- id = alsa_channel_ids[channel_map->map[i]];
+ snd_pcm_close(pcm_handle);
+ continue;
+ }
- if (!is_mono && id == SND_MIXER_SCHN_UNKNOWN) {
- pa_log_info("Configured channel map contains channel '%s' that is unknown to the ALSA mixer.", pa_channel_position_to_string(channel_map->map[i]));
- return -1;
- }
+ pa_log_info("Failed to set hardware parameters on %s: %s", d, pa_alsa_strerror(err));
+ snd_pcm_close(pcm_handle);
- if ((is_mono && mono_used) || (!is_mono && alsa_channel_used[id])) {
- pa_log_info("Channel map has duplicate channel '%s', falling back to software volume control.", pa_channel_position_to_string(channel_map->map[i]));
- return -1;
+ goto fail;
}
- if ((playback && (!snd_mixer_selem_has_playback_channel(elem, id) || (is_mono && !snd_mixer_selem_is_playback_mono(elem)))) ||
- (!playback && (!snd_mixer_selem_has_capture_channel(elem, id) || (is_mono && !snd_mixer_selem_is_capture_mono(elem))))) {
+ if (dev)
+ *dev = d;
+ else
+ pa_xfree(d);
- pa_log_info("ALSA device lacks separate volumes control for channel '%s'", pa_channel_position_to_string(channel_map->map[i]));
- return -1;
- }
+ if (ss->channels != map->channels)
+ pa_channel_map_init_extend(map, ss->channels, PA_CHANNEL_MAP_ALSA);
- if (is_mono) {
- mixer_map[i] = SND_MIXER_SCHN_MONO;
- mono_used = TRUE;
- } else {
- mixer_map[i] = id;
- alsa_channel_used[id] = TRUE;
- }
+ return pcm_handle;
}
- pa_log_info("All %u channels can be mapped to mixer channels.", channel_map->channels);
+fail:
+ pa_xfree(d);
- return 0;
+ return NULL;
+}
+
+snd_pcm_t *pa_alsa_open_by_template(
+ char **template,
+ const char *dev_id,
+ char **dev,
+ pa_sample_spec *ss,
+ pa_channel_map* map,
+ int mode,
+ snd_pcm_uframes_t *period_size,
+ snd_pcm_uframes_t *buffer_size,
+ snd_pcm_uframes_t tsched_size,
+ bool *use_mmap,
+ bool *use_tsched,
+ bool require_exact_channel_number) {
+
+ snd_pcm_t *pcm_handle;
+ char **i;
+
+ for (i = template; *i; i++) {
+ char *d;
+
+ d = pa_replace(*i, "%f", dev_id);
+
+ pcm_handle = pa_alsa_open_by_device_string(
+ d,
+ dev,
+ ss,
+ map,
+ mode,
+ period_size,
+ buffer_size,
+ tsched_size,
+ use_mmap,
+ use_tsched,
+ require_exact_channel_number);
+
+ pa_xfree(d);
+
+ if (pcm_handle)
+ return pcm_handle;
+ }
+
+ return NULL;
}
-void pa_alsa_dump(snd_pcm_t *pcm) {
+void pa_alsa_dump(pa_log_level_t level, snd_pcm_t *pcm) {
int err;
snd_output_t *out;
pa_assert_se(snd_output_buffer_open(&out) == 0);
if ((err = snd_pcm_dump(pcm, out)) < 0)
- pa_log_debug("snd_pcm_dump(): %s", snd_strerror(err));
+ pa_logl(level, "snd_pcm_dump(): %s", pa_alsa_strerror(err));
else {
char *s = NULL;
snd_output_buffer_string(out, &s);
- pa_log_debug("snd_pcm_dump():\n%s", pa_strnull(s));
+ pa_logl(level, "snd_pcm_dump():\n%s", pa_strnull(s));
}
pa_assert_se(snd_output_close(out) == 0);
int err;
snd_output_t *out;
snd_pcm_status_t *status;
+ char *s = NULL;
pa_assert(pcm);
snd_pcm_status_alloca(&status);
- pa_assert_se(snd_output_buffer_open(&out) == 0);
+ if ((err = snd_output_buffer_open(&out)) < 0) {
+ pa_log_debug("snd_output_buffer_open() failed: %s", pa_cstrerror(err));
+ return;
+ }
- pa_assert_se(snd_pcm_status(pcm, status) == 0);
+ if ((err = snd_pcm_status(pcm, status)) < 0) {
+ pa_log_debug("snd_pcm_status() failed: %s", pa_cstrerror(err));
+ goto finish;
+ }
- if ((err = snd_pcm_status_dump(status, out)) < 0)
- pa_log_debug("snd_pcm_dump(): %s", snd_strerror(err));
- else {
- char *s = NULL;
- snd_output_buffer_string(out, &s);
- pa_log_debug("snd_pcm_dump():\n%s", pa_strnull(s));
+ if ((err = snd_pcm_status_dump(status, out)) < 0) {
+ pa_log_debug("snd_pcm_status_dump(): %s", pa_alsa_strerror(err));
+ goto finish;
}
- pa_assert_se(snd_output_close(out) == 0);
+ snd_output_buffer_string(out, &s);
+ pa_log_debug("snd_pcm_status_dump():\n%s", pa_strnull(s));
+
+finish:
+
+ snd_output_close(out);
}
static void alsa_error_handler(const char *file, int line, const char *function, int err, const char *fmt,...) {
static pa_atomic_t n_error_handler_installed = PA_ATOMIC_INIT(0);
-void pa_alsa_redirect_errors_inc(void) {
+void pa_alsa_refcnt_inc(void) {
/* This is not really thread safe, but we do our best */
if (pa_atomic_inc(&n_error_handler_installed) == 0)
snd_lib_error_set_handler(alsa_error_handler);
}
-void pa_alsa_redirect_errors_dec(void) {
+void pa_alsa_refcnt_dec(void) {
int r;
pa_assert_se((r = pa_atomic_dec(&n_error_handler_installed)) >= 1);
- if (r == 1)
+ if (r == 1) {
snd_lib_error_set_handler(NULL);
+ snd_config_update_free_global();
+ }
}
-pa_bool_t pa_alsa_init_description(pa_proplist *p) {
- const char *s;
+bool pa_alsa_init_description(pa_proplist *p, pa_card *card) {
+ const char *d, *k;
pa_assert(p);
- if (pa_device_init_description(p))
- return TRUE;
+ if (pa_device_init_description(p, card))
+ return true;
- if ((s = pa_proplist_gets(p, "alsa.card_name"))) {
- pa_proplist_sets(p, PA_PROP_DEVICE_DESCRIPTION, s);
- return TRUE;
- }
+ if (!(d = pa_proplist_gets(p, "alsa.card_name")))
+ d = pa_proplist_gets(p, "alsa.name");
- if ((s = pa_proplist_gets(p, "alsa.name"))) {
- pa_proplist_sets(p, PA_PROP_DEVICE_DESCRIPTION, s);
- return TRUE;
- }
+ if (!d)
+ return false;
+
+ k = pa_proplist_gets(p, PA_PROP_DEVICE_PROFILE_DESCRIPTION);
+
+ if (d && k)
+ pa_proplist_setf(p, PA_PROP_DEVICE_DESCRIPTION, "%s %s", d, k);
+ else if (d)
+ pa_proplist_sets(p, PA_PROP_DEVICE_DESCRIPTION, d);
- return FALSE;
+ return false;
}
void pa_alsa_init_proplist_card(pa_core *c, pa_proplist *p, int card) {
pa_proplist_setf(p, "alsa.card", "%i", card);
if (snd_card_get_name(card, &cn) >= 0) {
- pa_proplist_sets(p, "alsa.card_name", cn);
+ pa_proplist_sets(p, "alsa.card_name", pa_strip(cn));
free(cn);
}
if (snd_card_get_longname(card, &lcn) >= 0) {
- pa_proplist_sets(p, "alsa.long_card_name", lcn);
+ pa_proplist_sets(p, "alsa.long_card_name", pa_strip(lcn));
free(lcn);
}
}
#ifdef HAVE_UDEV
- pa_udev_get_info(c, p, card);
-#endif
-
-#ifdef HAVE_HAL
- pa_hal_get_info(c, p, card);
+ pa_udev_get_info(card, p);
#endif
}
pa_proplist_sets(p, PA_PROP_DEVICE_API, "alsa");
- class = snd_pcm_info_get_class(pcm_info);
- if (class <= SND_PCM_CLASS_LAST) {
+ if ((class = snd_pcm_info_get_class(pcm_info)) <= SND_PCM_CLASS_LAST) {
if (class_table[class])
pa_proplist_sets(p, PA_PROP_DEVICE_CLASS, class_table[class]);
if (alsa_class_table[class])
pa_proplist_sets(p, "alsa.class", alsa_class_table[class]);
}
- subclass = snd_pcm_info_get_subclass(pcm_info);
- if (subclass <= SND_PCM_SUBCLASS_LAST)
+ if ((subclass = snd_pcm_info_get_subclass(pcm_info)) <= SND_PCM_SUBCLASS_LAST)
if (alsa_subclass_table[subclass])
pa_proplist_sets(p, "alsa.subclass", alsa_subclass_table[subclass]);
- if ((n = snd_pcm_info_get_name(pcm_info)))
- pa_proplist_sets(p, "alsa.name", n);
+ if ((n = snd_pcm_info_get_name(pcm_info))) {
+ char *t = pa_xstrdup(n);
+ pa_proplist_sets(p, "alsa.name", pa_strip(t));
+ pa_xfree(t);
+ }
if ((id = snd_pcm_info_get_id(pcm_info)))
pa_proplist_sets(p, "alsa.id", id);
snd_pcm_info_alloca(&info);
if ((err = snd_pcm_hw_params_current(pcm, hwparams)) < 0)
- pa_log_warn("Error fetching hardware parameter info: %s", snd_strerror(err));
+ pa_log_warn("Error fetching hardware parameter info: %s", pa_alsa_strerror(err));
else {
if ((bits = snd_pcm_hw_params_get_sbits(hwparams)) >= 0)
}
if ((err = snd_pcm_info(pcm, info)) < 0)
- pa_log_warn("Error fetching PCM info: %s", snd_strerror(err));
+ pa_log_warn("Error fetching PCM info: %s", pa_alsa_strerror(err));
else
pa_alsa_init_proplist_pcm_info(c, p, info);
}
+void pa_alsa_init_proplist_ctl(pa_proplist *p, const char *name) {
+ int err;
+ snd_ctl_t *ctl;
+ snd_ctl_card_info_t *info;
+ const char *t;
+
+ pa_assert(p);
+
+ snd_ctl_card_info_alloca(&info);
+
+ if ((err = snd_ctl_open(&ctl, name, 0)) < 0) {
+ pa_log_warn("Error opening low-level control device '%s': %s", name, snd_strerror(err));
+ return;
+ }
+
+ if ((err = snd_ctl_card_info(ctl, info)) < 0) {
+ pa_log_warn("Control device %s card info: %s", name, snd_strerror(err));
+ snd_ctl_close(ctl);
+ return;
+ }
+
+ if ((t = snd_ctl_card_info_get_mixername(info)) && *t)
+ pa_proplist_sets(p, "alsa.mixer_name", t);
+
+ if ((t = snd_ctl_card_info_get_components(info)) && *t)
+ pa_proplist_sets(p, "alsa.components", t);
+
+ snd_ctl_close(ctl);
+}
+
int pa_alsa_recover_from_poll(snd_pcm_t *pcm, int revents) {
snd_pcm_state_t state;
int err;
case SND_PCM_STATE_XRUN:
if ((err = snd_pcm_recover(pcm, -EPIPE, 1)) != 0) {
- pa_log_warn("Could not recover from POLLERR|POLLNVAL|POLLHUP and XRUN: %s", snd_strerror(err));
+ pa_log_warn("Could not recover from POLLERR|POLLNVAL|POLLHUP and XRUN: %s", pa_alsa_strerror(err));
return -1;
}
break;
case SND_PCM_STATE_SUSPENDED:
if ((err = snd_pcm_recover(pcm, -ESTRPIPE, 1)) != 0) {
- pa_log_warn("Could not recover from POLLERR|POLLNVAL|POLLHUP and SUSPENDED: %s", snd_strerror(err));
+ pa_log_warn("Could not recover from POLLERR|POLLNVAL|POLLHUP and SUSPENDED: %s", pa_alsa_strerror(err));
return -1;
}
break;
snd_pcm_drop(pcm);
if ((err = snd_pcm_prepare(pcm)) < 0) {
- pa_log_warn("Could not recover from POLLERR|POLLNVAL|POLLHUP with snd_pcm_prepare(): %s", snd_strerror(err));
+ pa_log_warn("Could not recover from POLLERR|POLLNVAL|POLLHUP with snd_pcm_prepare(): %s", pa_alsa_strerror(err));
return -1;
}
break;
pa_assert(pcm);
if ((n = snd_pcm_poll_descriptors_count(pcm)) < 0) {
- pa_log("snd_pcm_poll_descriptors_count() failed: %s", snd_strerror(n));
+ pa_log("snd_pcm_poll_descriptors_count() failed: %s", pa_alsa_strerror(n));
return NULL;
}
pollfd = pa_rtpoll_item_get_pollfd(item, NULL);
if ((err = snd_pcm_poll_descriptors(pcm, pollfd, (unsigned) n)) < 0) {
- pa_log("snd_pcm_poll_descriptors() failed: %s", snd_strerror(err));
+ pa_log("snd_pcm_poll_descriptors() failed: %s", pa_alsa_strerror(err));
pa_rtpoll_item_free(item);
return NULL;
}
k = (size_t) n * pa_frame_size(ss);
- if (k >= hwbuf_size * 5 ||
- k >= pa_bytes_per_second(ss)*10) {
+ if (PA_UNLIKELY(k >= hwbuf_size * 5 ||
+ k >= pa_bytes_per_second(ss)*10)) {
PA_ONCE_BEGIN {
char *dn = pa_alsa_get_driver_name_by_pcm(pcm);
(unsigned long) (pa_bytes_to_usec(k, ss) / PA_USEC_PER_MSEC),
pa_strnull(dn));
pa_xfree(dn);
+ pa_alsa_dump(PA_LOG_ERROR, pcm);
} PA_ONCE_END;
/* Mhmm, let's try not to fail completely */
return n;
}
-int pa_alsa_safe_delay(snd_pcm_t *pcm, snd_pcm_sframes_t *delay, size_t hwbuf_size, const pa_sample_spec *ss) {
+int pa_alsa_safe_delay(snd_pcm_t *pcm, snd_pcm_status_t *status, snd_pcm_sframes_t *delay, size_t hwbuf_size, const pa_sample_spec *ss,
+ bool capture) {
ssize_t k;
size_t abs_k;
- int r;
+ int err;
+ snd_pcm_sframes_t avail = 0;
pa_assert(pcm);
pa_assert(delay);
pa_assert(ss);
/* Some ALSA driver expose weird bugs, let's inform the user about
- * what is going on */
+ * what is going on. We're going to get both the avail and delay values so
+ * that we can compare and check them for capture.
+ * This is done with snd_pcm_status() which provides
+ * avail, delay and timestamp values in a single kernel call to improve
+ * timer-based scheduling */
- if ((r = snd_pcm_delay(pcm, delay)) < 0)
- return r;
+ if ((err = snd_pcm_status(pcm, status)) < 0)
+ return err;
+
+ avail = snd_pcm_status_get_avail(status);
+ *delay = snd_pcm_status_get_delay(status);
k = (ssize_t) *delay * (ssize_t) pa_frame_size(ss);
abs_k = k >= 0 ? (size_t) k : (size_t) -k;
- if (abs_k >= hwbuf_size * 5 ||
- abs_k >= pa_bytes_per_second(ss)*10) {
+ if (PA_UNLIKELY(abs_k >= hwbuf_size * 5 ||
+ abs_k >= pa_bytes_per_second(ss)*10)) {
PA_ONCE_BEGIN {
char *dn = pa_alsa_get_driver_name_by_pcm(pcm);
(unsigned long) (pa_bytes_to_usec(abs_k, ss) / PA_USEC_PER_MSEC),
pa_strnull(dn));
pa_xfree(dn);
+ pa_alsa_dump(PA_LOG_ERROR, pcm);
} PA_ONCE_END;
/* Mhmm, let's try not to fail completely */
*delay = (snd_pcm_sframes_t) (hwbuf_size / pa_frame_size(ss));
}
+ if (capture) {
+ abs_k = (size_t) avail * pa_frame_size(ss);
+
+ if (PA_UNLIKELY(abs_k >= hwbuf_size * 5 ||
+ abs_k >= pa_bytes_per_second(ss)*10)) {
+
+ PA_ONCE_BEGIN {
+ char *dn = pa_alsa_get_driver_name_by_pcm(pcm);
+ pa_log(_("snd_pcm_avail() returned a value that is exceptionally large: %lu bytes (%lu ms).\n"
+ "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers."),
+ (unsigned long) k,
+ (unsigned long) (pa_bytes_to_usec(k, ss) / PA_USEC_PER_MSEC),
+ pa_strnull(dn));
+ pa_xfree(dn);
+ pa_alsa_dump(PA_LOG_ERROR, pcm);
+ } PA_ONCE_END;
+
+ /* Mhmm, let's try not to fail completely */
+ avail = (snd_pcm_sframes_t) (hwbuf_size / pa_frame_size(ss));
+ }
+
+ if (PA_UNLIKELY(*delay < avail)) {
+ PA_ONCE_BEGIN {
+ char *dn = pa_alsa_get_driver_name_by_pcm(pcm);
+ pa_log(_("snd_pcm_avail_delay() returned strange values: delay %lu is less than avail %lu.\n"
+ "Most likely this is a bug in the ALSA driver '%s'. Please report this issue to the ALSA developers."),
+ (unsigned long) *delay,
+ (unsigned long) avail,
+ pa_strnull(dn));
+ pa_xfree(dn);
+ pa_alsa_dump(PA_LOG_ERROR, pcm);
+ } PA_ONCE_END;
+
+ /* try to fixup */
+ *delay = avail;
+ }
+ }
+
return 0;
}
k = (size_t) *frames * pa_frame_size(ss);
- if (*frames > before ||
- k >= hwbuf_size * 3 ||
- k >= pa_bytes_per_second(ss)*10)
-
+ if (PA_UNLIKELY(*frames > before ||
+ k >= hwbuf_size * 3 ||
+ k >= pa_bytes_per_second(ss)*10))
PA_ONCE_BEGIN {
char *dn = pa_alsa_get_driver_name_by_pcm(pcm);
pa_log(_("snd_pcm_mmap_begin() returned a value that is exceptionally large: %lu bytes (%lu ms).\n"
(unsigned long) (pa_bytes_to_usec(k, ss) / PA_USEC_PER_MSEC),
pa_strnull(dn));
pa_xfree(dn);
+ pa_alsa_dump(PA_LOG_ERROR, pcm);
} PA_ONCE_END;
return r;
return pa_sprintf_malloc("Audio%i", i);
}
-pa_bool_t pa_alsa_pcm_is_hw(snd_pcm_t *pcm) {
+unsigned int *pa_alsa_get_supported_rates(snd_pcm_t *pcm, unsigned int fallback_rate) {
+ static unsigned int all_rates[] = { 8000, 11025, 12000,
+ 16000, 22050, 24000,
+ 32000, 44100, 48000,
+ 64000, 88200, 96000,
+ 128000, 176400, 192000,
+ 384000 };
+ bool supported[PA_ELEMENTSOF(all_rates)] = { false, };
+ snd_pcm_hw_params_t *hwparams;
+ unsigned int i, j, n, *rates = NULL;
+ int ret;
+
+ snd_pcm_hw_params_alloca(&hwparams);
+
+ if ((ret = snd_pcm_hw_params_any(pcm, hwparams)) < 0) {
+ pa_log_debug("snd_pcm_hw_params_any() failed: %s", pa_alsa_strerror(ret));
+ return NULL;
+ }
+
+ for (i = 0, n = 0; i < PA_ELEMENTSOF(all_rates); i++) {
+ if (snd_pcm_hw_params_test_rate(pcm, hwparams, all_rates[i], 0) == 0) {
+ supported[i] = true;
+ n++;
+ }
+ }
+
+ if (n > 0) {
+ rates = pa_xnew(unsigned int, n + 1);
+
+ for (i = 0, j = 0; i < PA_ELEMENTSOF(all_rates); i++) {
+ if (supported[i])
+ rates[j++] = all_rates[i];
+ }
+
+ rates[j] = 0;
+ } else {
+ rates = pa_xnew(unsigned int, 2);
+
+ rates[0] = fallback_rate;
+ if ((ret = snd_pcm_hw_params_set_rate_near(pcm, hwparams, &rates[0], NULL)) < 0) {
+ pa_log_debug("snd_pcm_hw_params_set_rate_near() failed: %s", pa_alsa_strerror(ret));
+ pa_xfree(rates);
+ return NULL;
+ }
+
+ rates[1] = 0;
+ }
+
+ return rates;
+}
+
+bool pa_alsa_pcm_is_hw(snd_pcm_t *pcm) {
snd_pcm_info_t* info;
snd_pcm_info_alloca(&info);
pa_assert(pcm);
if (snd_pcm_info(pcm, info) < 0)
- return FALSE;
+ return false;
return snd_pcm_info_get_card(info) >= 0;
}
+
+bool pa_alsa_pcm_is_modem(snd_pcm_t *pcm) {
+ snd_pcm_info_t* info;
+ snd_pcm_info_alloca(&info);
+
+ pa_assert(pcm);
+
+ if (snd_pcm_info(pcm, info) < 0)
+ return false;
+
+ return snd_pcm_info_get_class(info) == SND_PCM_CLASS_MODEM;
+}
+
+PA_STATIC_TLS_DECLARE(cstrerror, pa_xfree);
+
+const char* pa_alsa_strerror(int errnum) {
+ const char *original = NULL;
+ char *translated, *t;
+ char errbuf[128];
+
+ if ((t = PA_STATIC_TLS_GET(cstrerror)))
+ pa_xfree(t);
+
+ original = snd_strerror(errnum);
+
+ if (!original) {
+ pa_snprintf(errbuf, sizeof(errbuf), "Unknown error %i", errnum);
+ original = errbuf;
+ }
+
+ if (!(translated = pa_locale_to_utf8(original))) {
+ pa_log_warn("Unable to convert error string to locale, filtering.");
+ translated = pa_utf8_filter(original);
+ }
+
+ PA_STATIC_TLS_SET(cstrerror, translated);
+
+ return translated;
+}
+
+bool pa_alsa_may_tsched(bool want) {
+
+ if (!want)
+ return false;
+
+ if (!pa_rtclock_hrtimer()) {
+ /* We cannot depend on being woken up in time when the timers
+ are inaccurate, so let's fallback to classic IO based playback
+ then. */
+ pa_log_notice("Disabling timer-based scheduling because high-resolution timers are not available from the kernel.");
+ return false; }
+
+ if (pa_running_in_vm()) {
+ /* We cannot depend on being woken up when we ask for in a VM,
+ * so let's fallback to classic IO based playback then. */
+ pa_log_notice("Disabling timer-based scheduling because running inside a VM.");
+ return false;
+ }
+
+ return true;
+}
+
+snd_hctl_elem_t* pa_alsa_find_jack(snd_hctl_t *hctl, const char* jack_name) {
+ snd_ctl_elem_id_t *id;
+
+ snd_ctl_elem_id_alloca(&id);
+ snd_ctl_elem_id_clear(id);
+ snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_CARD);
+ snd_ctl_elem_id_set_name(id, jack_name);
+
+ return snd_hctl_find_elem(hctl, id);
+}
+
+snd_hctl_elem_t* pa_alsa_find_eld_ctl(snd_hctl_t *hctl, int device) {
+ snd_ctl_elem_id_t *id;
+
+ /* See if we can find the ELD control */
+ snd_ctl_elem_id_alloca(&id);
+ snd_ctl_elem_id_clear(id);
+ snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_PCM);
+ snd_ctl_elem_id_set_name(id, "ELD");
+ snd_ctl_elem_id_set_device(id, device);
+
+ return snd_hctl_find_elem(hctl, id);
+}
+
+static int prepare_mixer(snd_mixer_t *mixer, const char *dev, snd_hctl_t **hctl) {
+ int err;
+
+ pa_assert(mixer);
+ pa_assert(dev);
+
+ if ((err = snd_mixer_attach(mixer, dev)) < 0) {
+ pa_log_info("Unable to attach to mixer %s: %s", dev, pa_alsa_strerror(err));
+ return -1;
+ }
+
+ /* Note: The hctl handle returned should not be freed.
+ It is closed/freed by alsa-lib on snd_mixer_close/free */
+ if (hctl && (err = snd_mixer_get_hctl(mixer, dev, hctl)) < 0) {
+ pa_log_info("Unable to get hctl of mixer %s: %s", dev, pa_alsa_strerror(err));
+ return -1;
+ }
+
+ if ((err = snd_mixer_selem_register(mixer, NULL, NULL)) < 0) {
+ pa_log_warn("Unable to register mixer: %s", pa_alsa_strerror(err));
+ return -1;
+ }
+
+ if ((err = snd_mixer_load(mixer)) < 0) {
+ pa_log_warn("Unable to load mixer: %s", pa_alsa_strerror(err));
+ return -1;
+ }
+
+ pa_log_info("Successfully attached to mixer '%s'", dev);
+ return 0;
+}
+
+snd_mixer_t *pa_alsa_open_mixer(int alsa_card_index, char **ctl_device, snd_hctl_t **hctl) {
+ int err;
+ snd_mixer_t *m;
+ char *md;
+ snd_pcm_info_t* info;
+ snd_pcm_info_alloca(&info);
+
+ if ((err = snd_mixer_open(&m, 0)) < 0) {
+ pa_log("Error opening mixer: %s", pa_alsa_strerror(err));
+ return NULL;
+ }
+
+ /* Then, try by card index */
+ md = pa_sprintf_malloc("hw:%i", alsa_card_index);
+ if (prepare_mixer(m, md, hctl) >= 0) {
+
+ if (ctl_device)
+ *ctl_device = md;
+ else
+ pa_xfree(md);
+
+ return m;
+ }
+
+ pa_xfree(md);
+
+ snd_mixer_close(m);
+ return NULL;
+}
+
+snd_mixer_t *pa_alsa_open_mixer_for_pcm(snd_pcm_t *pcm, char **ctl_device, snd_hctl_t **hctl) {
+ int err;
+ snd_mixer_t *m;
+ const char *dev;
+ snd_pcm_info_t* info;
+ snd_pcm_info_alloca(&info);
+
+ pa_assert(pcm);
+
+ if ((err = snd_mixer_open(&m, 0)) < 0) {
+ pa_log("Error opening mixer: %s", pa_alsa_strerror(err));
+ return NULL;
+ }
+
+ /* First, try by name */
+ if ((dev = snd_pcm_name(pcm)))
+ if (prepare_mixer(m, dev, hctl) >= 0) {
+ if (ctl_device)
+ *ctl_device = pa_xstrdup(dev);
+
+ return m;
+ }
+
+ /* Then, try by card index */
+ if (snd_pcm_info(pcm, info) >= 0) {
+ char *md;
+ int card_idx;
+
+ if ((card_idx = snd_pcm_info_get_card(info)) >= 0) {
+
+ md = pa_sprintf_malloc("hw:%i", card_idx);
+
+ if (!dev || !pa_streq(dev, md))
+ if (prepare_mixer(m, md, hctl) >= 0) {
+
+ if (ctl_device)
+ *ctl_device = md;
+ else
+ pa_xfree(md);
+
+ return m;
+ }
+
+ pa_xfree(md);
+ }
+ }
+
+ snd_mixer_close(m);
+ return NULL;
+}
+
+int pa_alsa_get_hdmi_eld(snd_hctl_t *hctl, int device, pa_hdmi_eld *eld) {
+
+ /* The ELD format is specific to HDA Intel sound cards and defined in the
+ HDA specification: http://www.intel.com/content/www/us/en/standards/high-definition-audio-specification.html */
+ int err;
+ snd_hctl_elem_t *elem;
+ snd_ctl_elem_info_t *info;
+ snd_ctl_elem_value_t *value;
+ uint8_t *elddata;
+ unsigned int eldsize, mnl;
+
+ pa_assert(eld != NULL);
+
+ /* See if we can find the ELD control */
+ elem = pa_alsa_find_eld_ctl(hctl, device);
+ if (elem == NULL) {
+ pa_log_debug("No ELD info control found (for device=%d)", device);
+ return -1;
+ }
+
+ /* Does it have any contents? */
+ snd_ctl_elem_info_alloca(&info);
+ snd_ctl_elem_value_alloca(&value);
+ if ((err = snd_hctl_elem_info(elem, info)) < 0 ||
+ (err = snd_hctl_elem_read(elem, value)) < 0) {
+ pa_log_warn("Accessing ELD control failed with error %s", snd_strerror(err));
+ return -1;
+ }
+
+ eldsize = snd_ctl_elem_info_get_count(info);
+ elddata = (unsigned char *) snd_ctl_elem_value_get_bytes(value);
+ if (elddata == NULL || eldsize == 0) {
+ pa_log_debug("ELD info empty (for device=%d)", device);
+ return -1;
+ }
+ if (eldsize < 20 || eldsize > 256) {
+ pa_log_debug("ELD info has wrong size (for device=%d)", device);
+ return -1;
+ }
+
+ /* Try to fetch monitor name */
+ mnl = elddata[4] & 0x1f;
+ if (mnl == 0 || mnl > 16 || 20 + mnl > eldsize) {
+ pa_log_debug("No monitor name in ELD info (for device=%d)", device);
+ mnl = 0;
+ }
+ memcpy(eld->monitor_name, &elddata[20], mnl);
+ eld->monitor_name[mnl] = '\0';
+ if (mnl)
+ pa_log_debug("Monitor name in ELD info is '%s' (for device=%d)", eld->monitor_name, device);
+
+ return 0;
+}