1 files changed, 473 insertions, 0 deletions

diff --git a/src/modules/module-suspend-on-idle.c b/src/modules/module-suspend-on-idle.c
new file mode 100644
index 00000000..5a711390
--- /dev/null
+++ b/src/modules/module-suspend-on-idle.c
@@ -0,0 +1,473 @@
+/* $Id$ */
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2006 Lennart Poettering
+
+  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.
+
+  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 PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <pulse/xmalloc.h>
+#include <pulse/timeval.h>
+
+#include <pulsecore/core.h>
+#include <pulsecore/sink-input.h>
+#include <pulsecore/source-output.h>
+#include <pulsecore/modargs.h>
+#include <pulsecore/log.h>
+#include <pulsecore/namereg.h>
+
+#include "module-suspend-on-idle-symdef.h"
+
+PA_MODULE_AUTHOR("Lennart Poettering")
+PA_MODULE_DESCRIPTION("When a sink/source is idle for too long, suspend it")
+PA_MODULE_VERSION(PACKAGE_VERSION)
+
+static const char* const valid_modargs[] = {
+    "timeout",
+    NULL,
+};
+
+struct userdata {
+    pa_core *core;
+    pa_usec_t timeout;
+    pa_hashmap *device_infos;
+    pa_hook_slot
+        *sink_new_slot,
+        *source_new_slot,
+        *sink_unlink_slot,
+        *source_unlink_slot,
+        *sink_state_changed_slot,
+        *source_state_changed_slot;
+
+    pa_hook_slot
+        *sink_input_new_slot,
+        *source_output_new_slot,
+        *sink_input_unlink_slot,
+        *source_output_unlink_slot,
+        *sink_input_move_slot,
+        *source_output_move_slot,
+        *sink_input_move_post_slot,
+        *source_output_move_post_slot,
+        *sink_input_state_changed_slot,
+        *source_output_state_changed_slot;
+};
+
+struct device_info {
+    struct userdata *userdata;
+    pa_sink *sink;
+    pa_source *source;
+    struct timeval last_use;
+    pa_time_event *time_event;
+};
+
+static void timeout_cb(pa_mainloop_api*a, pa_time_event* e, const struct timeval *tv, void *userdata) {
+    struct device_info *d = userdata;
+
+    pa_assert(d);
+
+    d->userdata->core->mainloop->time_restart(d->time_event, NULL);
+
+    if (d->sink && pa_sink_used_by(d->sink) <= 0 && pa_sink_get_state(d->sink) != PA_SINK_SUSPENDED) {
+        pa_log_info("Sink %s idle for too long, suspending ...", d->sink->name);
+        pa_sink_suspend(d->sink, TRUE);
+    }
+
+    if (d->source && pa_source_used_by(d->source) <= 0 && pa_source_get_state(d->source) != PA_SOURCE_SUSPENDED) {
+        pa_log_info("Source %s idle for too long, suspending ...", d->source->name);
+        pa_source_suspend(d->source, TRUE);
+    }
+}
+
+static void restart(struct device_info *d) {
+    struct timeval tv;
+    pa_assert(d);
+
+    pa_gettimeofday(&tv);
+    d->last_use = tv;
+    pa_timeval_add(&tv, d->userdata->timeout*1000000);
+    d->userdata->core->mainloop->time_restart(d->time_event, &tv);
+
+    if (d->sink)
+        pa_log_debug("Sink %s becomes idle.", d->sink->name);
+    if (d->source)
+        pa_log_debug("Source %s becomes idle.", d->source->name);
+}
+
+static void resume(struct device_info *d) {
+    pa_assert(d);
+
+    d->userdata->core->mainloop->time_restart(d->time_event, NULL);
+
+    if (d->sink) {
+        pa_sink_suspend(d->sink, FALSE);
+
+        pa_log_debug("Sink %s becomes busy.", d->sink->name);
+    }
+
+    if (d->source) {
+        pa_source_suspend(d->source, FALSE);
+
+        pa_log_debug("Source %s becomes busy.", d->source->name);
+    }
+}
+
+static pa_hook_result_t sink_input_new_hook_cb(pa_core *c, pa_sink_input *s, struct userdata *u) {
+    struct device_info *d;
+
+    pa_assert(c);
+    pa_sink_input_assert_ref(s);
+    pa_assert(u);
+
+    if ((d = pa_hashmap_get(u->device_infos, s->sink)))
+        resume(d);
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_output_new_hook_cb(pa_core *c, pa_source_output *s, struct userdata *u) {
+    struct device_info *d;
+
+    pa_assert(c);
+    pa_source_output_assert_ref(s);
+    pa_assert(u);
+
+    if ((d = pa_hashmap_get(u->device_infos, s->source)))
+        resume(d);
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t sink_input_unlink_hook_cb(pa_core *c, pa_sink_input *s, struct userdata *u) {
+    pa_assert(c);
+    pa_sink_input_assert_ref(s);
+    pa_assert(u);
+
+    if (pa_sink_used_by(s->sink) <= 0) {
+        struct device_info *d;
+        if ((d = pa_hashmap_get(u->device_infos, s->sink)))
+            restart(d);
+    }
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_output_unlink_hook_cb(pa_core *c, pa_source_output *s, struct userdata *u) {
+    pa_assert(c);
+    pa_source_output_assert_ref(s);
+    pa_assert(u);
+
+    if (pa_source_used_by(s->source) <= 0) {
+        struct device_info *d;
+        if ((d = pa_hashmap_get(u->device_infos, s->source)))
+            restart(d);
+    }
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t sink_input_move_hook_cb(pa_core *c, pa_sink_input *s, struct userdata *u) {
+    pa_assert(c);
+    pa_sink_input_assert_ref(s);
+    pa_assert(u);
+
+    if (pa_sink_used_by(s->sink) <= 1) {
+        struct device_info *d;
+        if ((d = pa_hashmap_get(u->device_infos, s->sink)))
+            restart(d);
+    }
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t sink_input_move_post_hook_cb(pa_core *c, pa_sink_input *s, struct userdata *u) {
+    struct device_info *d;
+    pa_assert(c);
+    pa_sink_input_assert_ref(s);
+    pa_assert(u);
+
+    if ((d = pa_hashmap_get(u->device_infos, s->sink)))
+        resume(d);
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_output_move_hook_cb(pa_core *c, pa_source_output *s, struct userdata *u) {
+    pa_assert(c);
+    pa_source_output_assert_ref(s);
+    pa_assert(u);
+
+    if (pa_source_used_by(s->source) <= 1) {
+        struct device_info *d;
+
+        if ((d = pa_hashmap_get(u->device_infos, s->source)))
+            restart(d);
+    }
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_output_move_post_hook_cb(pa_core *c, pa_source_output *s, struct userdata *u) {
+    struct device_info *d;
+    pa_assert(c);
+    pa_source_output_assert_ref(s);
+    pa_assert(u);
+
+    if ((d = pa_hashmap_get(u->device_infos, s->source)))
+        resume(d);
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t sink_input_state_changed_hook_cb(pa_core *c, pa_sink_input *s, struct userdata *u) {
+    struct device_info *d;
+    pa_sink_input_state_t state;
+    pa_assert(c);
+    pa_sink_input_assert_ref(s);
+    pa_assert(u);
+
+    state = pa_sink_input_get_state(s);
+    if (state == PA_SINK_INPUT_RUNNING || state == PA_SINK_INPUT_DRAINED)
+        if ((d = pa_hashmap_get(u->device_infos, s->sink)))
+            resume(d);
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t source_output_state_changed_hook_cb(pa_core *c, pa_source_output *s, struct userdata *u) {
+    struct device_info *d;
+    pa_source_output_state_t state;
+    pa_assert(c);
+    pa_source_output_assert_ref(s);
+    pa_assert(u);
+
+    state = pa_source_output_get_state(s);
+    if (state == PA_SOURCE_OUTPUT_RUNNING)
+        if ((d = pa_hashmap_get(u->device_infos, s->source)))
+            resume(d);
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t device_new_hook_cb(pa_core *c, pa_object *o, struct userdata *u) {
+    struct device_info *d;
+    pa_source *source;
+    pa_sink *sink;
+
+    pa_assert(c);
+    pa_object_assert_ref(o);
+    pa_assert(u);
+
+    source = pa_source_isinstance(o) ? PA_SOURCE(o) : NULL;
+    sink = pa_sink_isinstance(o) ? PA_SINK(o) : NULL;
+
+    pa_assert(source || sink);
+
+    d = pa_xnew(struct device_info, 1);
+    d->userdata = u;
+    d->source = source ? pa_source_ref(source) : NULL;
+    d->sink = sink ? pa_sink_ref(sink) : NULL;
+    d->time_event = c->mainloop->time_new(c->mainloop, NULL, timeout_cb, d);
+    pa_hashmap_put(u->device_infos, o, d);
+
+    if ((d->sink && pa_sink_used_by(d->sink) <= 0) ||
+        (d->source && pa_source_used_by(d->source) <= 0))
+        restart(d);
+
+    return PA_HOOK_OK;
+}
+
+static void device_info_free(struct device_info *d) {
+    pa_assert(d);
+
+    if (d->source)
+        pa_source_unref(d->source);
+    if (d->sink)
+        pa_sink_unref(d->sink);
+
+    d->userdata->core->mainloop->time_free(d->time_event);
+
+    pa_xfree(d);
+}
+
+static pa_hook_result_t device_unlink_hook_cb(pa_core *c, pa_object *o, struct userdata *u) {
+    struct device_info *d;
+
+    pa_assert(c);
+    pa_object_assert_ref(o);
+    pa_assert(u);
+
+    if ((d = pa_hashmap_remove(u->device_infos, o)))
+        device_info_free(d);
+
+    return PA_HOOK_OK;
+}
+
+static pa_hook_result_t device_state_changed_hook_cb(pa_core *c, pa_object *o, struct userdata *u) {
+    struct device_info *d;
+
+    pa_assert(c);
+    pa_object_assert_ref(o);
+    pa_assert(u);
+
+    if (!(d = pa_hashmap_get(u->device_infos, o)))
+        return PA_HOOK_OK;
+
+    if (pa_sink_isinstance(o)) {
+        pa_sink *s = PA_SINK(o);
+        pa_sink_state_t state = pa_sink_get_state(s);
+
+        if (pa_sink_used_by(s) <= 0) {
+
+            if (PA_SINK_OPENED(state))
+                restart(d);
+
+        }
+
+    } else if (pa_source_isinstance(o)) {
+        pa_source *s = PA_SOURCE(o);
+        pa_source_state_t state = pa_source_get_state(s);
+
+        if (pa_source_used_by(s) <= 0) {
+
+            if (PA_SOURCE_OPENED(state))
+                restart(d);
+        }
+    }
+
+    return PA_HOOK_OK;
+}
+
+int pa__init(pa_module*m) {
+    pa_modargs *ma = NULL;
+    struct userdata *u;
+    uint32_t timeout = 1;
+    uint32_t idx;
+    pa_sink *sink;
+    pa_source *source;
+
+    pa_assert(m);
+
+    if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+        pa_log("Failed to parse module arguments.");
+        goto fail;
+    }
+
+    if (pa_modargs_get_value_u32(ma, "timeout", &timeout) < 0) {
+        pa_log("Failed to parse timeout value.");
+        goto fail;
+    }
+
+    m->userdata = u = pa_xnew(struct userdata, 1);
+    u->core = m->core;
+    u->timeout = timeout;
+    u->device_infos = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
+
+    for (sink = pa_idxset_first(m->core->sinks, &idx); sink; sink = pa_idxset_next(m->core->sinks, &idx))
+        device_new_hook_cb(m->core, PA_OBJECT(sink), u);
+
+    for (source = pa_idxset_first(m->core->sources, &idx); source; source = pa_idxset_next(m->core->sources, &idx))
+        device_new_hook_cb(m->core, PA_OBJECT(source), u);
+
+    u->sink_new_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_NEW_POST], (pa_hook_cb_t) device_new_hook_cb, u);
+    u->source_new_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_NEW_POST], (pa_hook_cb_t) device_new_hook_cb, u);
+    u->sink_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK_POST], (pa_hook_cb_t) device_unlink_hook_cb, u);
+    u->source_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], (pa_hook_cb_t) device_unlink_hook_cb, u);
+    u->sink_state_changed_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_STATE_CHANGED], (pa_hook_cb_t) device_state_changed_hook_cb, u);
+    u->source_state_changed_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], (pa_hook_cb_t) device_state_changed_hook_cb, u);
+
+    u->sink_input_new_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_PUT], (pa_hook_cb_t) sink_input_new_hook_cb, u);
+    u->source_output_new_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PUT], (pa_hook_cb_t) source_output_new_hook_cb, u);
+    u->sink_input_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK_POST], (pa_hook_cb_t) sink_input_unlink_hook_cb, u);
+    u->source_output_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK_POST], (pa_hook_cb_t) source_output_unlink_hook_cb, u);
+    u->sink_input_move_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE], (pa_hook_cb_t) sink_input_move_hook_cb, u);
+    u->source_output_move_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE], (pa_hook_cb_t) source_output_move_hook_cb, u);
+    u->sink_input_move_post_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_POST], (pa_hook_cb_t) sink_input_move_post_hook_cb, u);
+    u->source_output_move_post_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_POST], (pa_hook_cb_t) source_output_move_post_hook_cb, u);
+    u->sink_input_state_changed_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED], (pa_hook_cb_t) sink_input_state_changed_hook_cb, u);
+    u->source_output_state_changed_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_STATE_CHANGED], (pa_hook_cb_t) source_output_state_changed_hook_cb, u);
+
+
+    pa_modargs_free(ma);
+    return 0;
+
+fail:
+
+    if (ma)
+        pa_modargs_free(ma);
+
+    return -1;
+}
+
+void pa__done(pa_module*m) {
+    struct userdata *u;
+    struct device_info *d;
+
+    pa_assert(m);
+
+    if (!m->userdata)
+        return;
+
+    u = m->userdata;
+
+    if (u->sink_new_slot)
+        pa_hook_slot_free(u->sink_new_slot);
+    if (u->sink_unlink_slot)
+        pa_hook_slot_free(u->sink_unlink_slot);
+    if (u->sink_state_changed_slot)
+        pa_hook_slot_free(u->sink_state_changed_slot);
+
+    if (u->source_new_slot)
+        pa_hook_slot_free(u->source_new_slot);
+    if (u->source_unlink_slot)
+        pa_hook_slot_free(u->source_unlink_slot);
+    if (u->source_state_changed_slot)
+        pa_hook_slot_free(u->source_state_changed_slot);
+
+    if (u->sink_input_new_slot)
+        pa_hook_slot_free(u->sink_input_new_slot);
+    if (u->sink_input_unlink_slot)
+        pa_hook_slot_free(u->sink_input_unlink_slot);
+    if (u->sink_input_move_slot)
+        pa_hook_slot_free(u->sink_input_move_slot);
+    if (u->sink_input_move_post_slot)
+        pa_hook_slot_free(u->sink_input_move_post_slot);
+    if (u->sink_input_state_changed_slot)
+        pa_hook_slot_free(u->sink_input_state_changed_slot);
+
+    if (u->source_output_new_slot)
+        pa_hook_slot_free(u->source_output_new_slot);
+    if (u->source_output_unlink_slot)
+        pa_hook_slot_free(u->source_output_unlink_slot);
+    if (u->source_output_move_slot)
+        pa_hook_slot_free(u->source_output_move_slot);
+    if (u->source_output_move_post_slot)
+        pa_hook_slot_free(u->source_output_move_post_slot);
+    if (u->source_output_state_changed_slot)
+        pa_hook_slot_free(u->source_output_state_changed_slot);
+
+    while ((d = pa_hashmap_steal_first(u->device_infos)))
+        device_info_free(d);
+
+    pa_hashmap_free(u->device_infos, NULL, NULL);
+
+    pa_xfree(u);
+}