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alsa: monitor device reservation status and resume automatically when device becomes unused

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This commit is contained in:
Lennart Poettering 2009-06-05 19:05:42 +02:00
parent 00797b8b6e
commit 561c0af851
2 changed files with 124 additions and 6 deletions
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65
src/modules/alsa/alsa-sink.c
View file

@ -116,6 +116,8 @@ struct userdata {
pa_reserve_wrapper *reserve;
pa_hook_slot *reserve_slot;
pa_reserve_monitor_wrapper *monitor;
pa_hook_slot *monitor_slot;
};
static void userdata_free(struct userdata *u);
@ -185,6 +187,57 @@ static int reserve_init(struct userdata *u, const char *dname) {
return 0;
}
static pa_hook_result_t monitor_cb(pa_reserve_monitor_wrapper *w, void* busy, struct userdata *u) {
pa_bool_t b;
pa_assert(w);
pa_assert(u);
b = PA_PTR_TO_UINT(busy) && !u->reserve;
pa_sink_suspend(u->sink, b, PA_SUSPEND_APPLICATION);
return PA_HOOK_OK;
}
static void monitor_done(struct userdata *u) {
pa_assert(u);
if (u->monitor_slot) {
pa_hook_slot_free(u->monitor_slot);
u->monitor_slot = NULL;
}
if (u->monitor) {
pa_reserve_monitor_wrapper_unref(u->monitor);
u->monitor = NULL;
}
}
static int reserve_monitor_init(struct userdata *u, const char *dname) {
char *rname;
pa_assert(u);
pa_assert(dname);
if (pa_in_system_mode())
return 0;
/* We are resuming, try to lock the device */
if (!(rname = pa_alsa_get_reserve_name(dname)))
return 0;
u->monitor = pa_reserve_monitor_wrapper_get(u->core, rname);
pa_xfree(rname);
if (!(u->monitor))
return -1;
pa_assert(!u->monitor_slot);
u->monitor_slot = pa_hook_connect(pa_reserve_monitor_wrapper_hook(u->monitor), PA_HOOK_NORMAL, (pa_hook_cb_t) monitor_cb, u);
return 0;
}
static void fix_min_sleep_wakeup(struct userdata *u) {
size_t max_use, max_use_2;
@ -1580,9 +1633,14 @@ pa_sink *pa_alsa_sink_new(pa_module *m, pa_modargs *ma, const char*driver, pa_ca
pa_rtclock_usec(),
TRUE);
if (reserve_init(u, pa_modargs_get_value(
ma, "device_id",
pa_modargs_get_value(ma, "device", DEFAULT_DEVICE))) < 0)
dev_id = pa_modargs_get_value(
ma, "device_id",
pa_modargs_get_value(ma, "device", DEFAULT_DEVICE));
if (reserve_init(u, dev_id) < 0)
goto fail;
if (reserve_monitor_init(u, dev_id) < 0)
goto fail;
b = use_mmap;
@ -1828,6 +1886,7 @@ static void userdata_free(struct userdata *u) {
pa_smoother_free(u->smoother);
reserve_done(u);
monitor_done(u);
pa_xfree(u->device_name);
pa_xfree(u);

65
src/modules/alsa/alsa-source.c
View file

@ -114,6 +114,8 @@ struct userdata {
pa_reserve_wrapper *reserve;
pa_hook_slot *reserve_slot;
pa_reserve_monitor_wrapper *monitor;
pa_hook_slot *monitor_slot;
};
static void userdata_free(struct userdata *u);
@ -183,6 +185,57 @@ static int reserve_init(struct userdata *u, const char *dname) {
return 0;
}
static pa_hook_result_t monitor_cb(pa_reserve_monitor_wrapper *w, void* busy, struct userdata *u) {
pa_bool_t b;
pa_assert(w);
pa_assert(u);
b = PA_PTR_TO_UINT(busy) && !u->reserve;
pa_source_suspend(u->source, b, PA_SUSPEND_APPLICATION);
return PA_HOOK_OK;
}
static void monitor_done(struct userdata *u) {
pa_assert(u);
if (u->monitor_slot) {
pa_hook_slot_free(u->monitor_slot);
u->monitor_slot = NULL;
}
if (u->monitor) {
pa_reserve_monitor_wrapper_unref(u->monitor);
u->monitor = NULL;
}
}
static int reserve_monitor_init(struct userdata *u, const char *dname) {
char *rname;
pa_assert(u);
pa_assert(dname);
if (pa_in_system_mode())
return 0;
/* We are resuming, try to lock the device */
if (!(rname = pa_alsa_get_reserve_name(dname)))
return 0;
u->monitor = pa_reserve_monitor_wrapper_get(u->core, rname);
pa_xfree(rname);
if (!(u->monitor))
return -1;
pa_assert(!u->monitor_slot);
u->monitor_slot = pa_hook_connect(pa_reserve_monitor_wrapper_hook(u->monitor), PA_HOOK_NORMAL, (pa_hook_cb_t) monitor_cb, u);
return 0;
}
static void fix_min_sleep_wakeup(struct userdata *u) {
size_t max_use, max_use_2;
pa_assert(u);
@ -1438,9 +1491,14 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
pa_rtclock_usec(),
FALSE);
if (reserve_init(u, pa_modargs_get_value(
ma, "device_id",
pa_modargs_get_value(ma, "device", DEFAULT_DEVICE))) < 0)
dev_id = pa_modargs_get_value(
ma, "device_id",
pa_modargs_get_value(ma, "device", DEFAULT_DEVICE));
if (reserve_init(u, dev_id) < 0)
goto fail;
if (reserve_monitor_init(u, dev_id) < 0)
goto fail;
b = use_mmap;
@ -1676,6 +1734,7 @@ static void userdata_free(struct userdata *u) {
pa_smoother_free(u->smoother);
reserve_done(u);
monitor_done(u);
pa_xfree(u->device_name);
pa_xfree(u);