mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-05 13:29:57 -05:00
bring back alsa fd list managemet, since we need it for proper mixer change notification
git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1552 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering
parent
787f93533c
commit
dd40020057
2 changed files with 201 additions and 12 deletions
|
|
@ -33,9 +33,190 @@
|
|||
#include <pulse/xmalloc.h>
|
||||
|
||||
#include <pulsecore/log.h>
|
||||
#include <pulsecore/macro.h>
|
||||
|
||||
#include "alsa-util.h"
|
||||
|
||||
struct pa_alsa_fdlist {
|
||||
int 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;
|
||||
|
||||
int polled;
|
||||
|
||||
void (*cb)(void *userdata);
|
||||
void *userdata;
|
||||
};
|
||||
|
||||
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 = userdata;
|
||||
int err, 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 = 1;
|
||||
|
||||
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;
|
||||
}
|
||||
}
|
||||
|
||||
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_GCC_UNUSED pa_defer_event* e, void *userdata) {
|
||||
struct pa_alsa_fdlist *fdl = userdata;
|
||||
int num_fds, i, err;
|
||||
struct pollfd *temp;
|
||||
|
||||
pa_assert(a);
|
||||
pa_assert(fdl);
|
||||
pa_assert(fdl->mixer);
|
||||
|
||||
a->defer_enable(fdl->defer, 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_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 = 0;
|
||||
|
||||
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 = 0;
|
||||
|
||||
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) {
|
||||
int 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[] = {
|
||||
|
|
@ -61,8 +242,8 @@ static int set_format(snd_pcm_t *pcm_handle, snd_pcm_hw_params_t *hwparams, pa_s
|
|||
|
||||
int i, ret;
|
||||
|
||||
assert(pcm_handle);
|
||||
assert(f);
|
||||
pa_assert(pcm_handle);
|
||||
pa_assert(f);
|
||||
|
||||
if ((ret = snd_pcm_hw_params_set_format(pcm_handle, hwparams, format_trans[*f])) >= 0)
|
||||
return ret;
|
||||
|
|
@ -103,10 +284,10 @@ int pa_alsa_set_hw_params(snd_pcm_t *pcm_handle, pa_sample_spec *ss, uint32_t *p
|
|||
pa_sample_format_t f = ss->format;
|
||||
snd_pcm_hw_params_t *hwparams;
|
||||
|
||||
assert(pcm_handle);
|
||||
assert(ss);
|
||||
assert(periods);
|
||||
assert(period_size);
|
||||
pa_assert(pcm_handle);
|
||||
pa_assert(ss);
|
||||
pa_assert(periods);
|
||||
pa_assert(period_size);
|
||||
|
||||
buffer_size = *periods * *period_size;
|
||||
|
||||
|
|
@ -166,10 +347,10 @@ int pa_alsa_set_hw_params(snd_pcm_t *pcm_handle, pa_sample_spec *ss, uint32_t *p
|
|||
(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;
|
||||
|
||||
|
|
@ -183,7 +364,8 @@ finish:
|
|||
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("Unable to attach to mixer %s: %s", dev, snd_strerror(err));
|
||||
|
|
@ -206,10 +388,11 @@ int pa_alsa_prepare_mixer(snd_mixer_t *mixer, const char *dev) {
|
|||
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);
|
||||
|
||||
|
|
|
|||
|
|
@ -32,6 +32,12 @@
|
|||
|
||||
#include <pulse/channelmap.h>
|
||||
|
||||
typedef struct pa_alsa_fdlist pa_alsa_fdlist;
|
||||
|
||||
struct pa_alsa_fdlist *pa_alsa_fdlist_new(void);
|
||||
void pa_alsa_fdlist_free(struct pa_alsa_fdlist *fdl);
|
||||
int pa_alsa_fdlist_set_mixer(struct pa_alsa_fdlist *fdl, snd_mixer_t *mixer_handle, pa_mainloop_api* m);
|
||||
|
||||
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 pa_alsa_prepare_mixer(snd_mixer_t *mixer, const char *dev);
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue