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-rw-r--r--src/modules/module-stream-restore.c332
1 files changed, 322 insertions, 10 deletions
diff --git a/src/modules/module-stream-restore.c b/src/modules/module-stream-restore.c
index cac8a9bb..ee6fab42 100644
--- a/src/modules/module-stream-restore.c
+++ b/src/modules/module-stream-restore.c
@@ -46,6 +46,9 @@
#include <pulsecore/sink-input.h>
#include <pulsecore/source-output.h>
#include <pulsecore/namereg.h>
+#include <pulsecore/protocol-native.h>
+#include <pulsecore/pstream.h>
+#include <pulsecore/pstream-util.h>
#include "module-stream-restore-symdef.h"
@@ -70,13 +73,17 @@ struct userdata {
pa_hook_slot
*sink_input_new_hook_slot,
*sink_input_fixate_hook_slot,
- *source_output_new_hook_slot;
+ *source_output_new_hook_slot,
+ *connection_unlink_hook_slot;
pa_time_event *save_time_event;
GDBM_FILE gdbm_file;
pa_bool_t restore_device:1;
pa_bool_t restore_volume:1;
pa_bool_t restore_muted:1;
+
+ pa_native_protocol *protocol;
+ pa_idxset *subscribed;
};
struct entry {
@@ -86,6 +93,16 @@ struct entry {
pa_bool_t muted:1;
};
+
+enum {
+ SUBCOMMAND_TEST,
+ SUBCOMMAND_READ,
+ SUBCOMMAND_WRITE,
+ SUBCOMMAND_DELETE,
+ SUBCOMMAND_SUBSCRIBE,
+ SUBCOMMAND_EVENT
+};
+
static void save_time_callback(pa_mainloop_api*a, pa_time_event* e, const struct timeval *tv, void *userdata) {
struct userdata *u = userdata;
@@ -170,6 +187,32 @@ fail:
return NULL;
}
+static void trigger_save(struct userdata *u) {
+ struct timeval tv;
+ pa_native_connection *c;
+ uint32_t idx;
+
+ for (c = pa_idxset_first(u->subscribed, &idx); c; c = pa_idxset_next(u->subscribed, &idx)) {
+ pa_tagstruct *t;
+
+ t = pa_tagstruct_new(NULL, 0);
+ pa_tagstruct_putu32(t, PA_COMMAND_EXTENSION);
+ pa_tagstruct_putu32(t, 0);
+ pa_tagstruct_putu32(t, u->module->index);
+ pa_tagstruct_puts(t, u->module->name);
+ pa_tagstruct_putu32(t, SUBCOMMAND_EVENT);
+
+ pa_pstream_send_tagstruct(pa_native_connection_get_pstream(c), t);
+ }
+
+ if (u->save_time_event)
+ return;
+
+ pa_gettimeofday(&tv);
+ tv.tv_sec += SAVE_INTERVAL;
+ u->save_time_event = u->core->mainloop->time_new(u->core->mainloop, &tv, save_time_callback, u);
+}
+
static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
struct userdata *u = userdata;
struct entry entry, *old;
@@ -185,6 +228,8 @@ static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint3
t != (PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE))
return;
+ memset(&entry, 0, sizeof(entry));
+
if ((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SINK_INPUT) {
pa_sink_input *sink_input;
@@ -241,14 +286,9 @@ static void subscribe_callback(pa_core *c, pa_subscription_event_type_t t, uint3
gdbm_store(u->gdbm_file, key, data, GDBM_REPLACE);
- if (!u->save_time_event) {
- struct timeval tv;
- pa_gettimeofday(&tv);
- tv.tv_sec += SAVE_INTERVAL;
- u->save_time_event = u->core->mainloop->time_new(u->core->mainloop, &tv, save_time_callback, u);
- }
-
pa_xfree(name);
+
+ trigger_save(u);
}
static pa_hook_result_t sink_input_new_hook_callback(pa_core *c, pa_sink_input_new_data *new_data, struct userdata *u) {
@@ -264,7 +304,6 @@ static pa_hook_result_t sink_input_new_hook_callback(pa_core *c, pa_sink_input_n
pa_sink *s;
if (u->restore_device &&
- e->device[0] &&
(s = pa_namereg_get(c, e->device, PA_NAMEREG_SINK, TRUE))) {
pa_log_info("Restoring device for stream %s.", name);
@@ -321,7 +360,6 @@ static pa_hook_result_t source_output_new_hook_callback(pa_core *c, pa_source_ou
pa_source *s;
if (u->restore_device &&
- e->device[0] &&
(s = pa_namereg_get(c, e->device, PA_NAMEREG_SOURCE, TRUE))) {
pa_log_info("Restoring device for stream %s.", name);
@@ -336,6 +374,262 @@ static pa_hook_result_t source_output_new_hook_callback(pa_core *c, pa_source_ou
return PA_HOOK_OK;
}
+#define EXT_VERSION 1
+
+static void clear_db(struct userdata *u) {
+ datum key;
+
+ pa_assert(u);
+
+ key = gdbm_firstkey(u->gdbm_file);
+ while (key.dptr) {
+ datum next_key;
+ next_key = gdbm_nextkey(u->gdbm_file, key);
+
+ gdbm_delete(u->gdbm_file, key);
+ pa_xfree(key.dptr);
+
+ key = next_key;
+ }
+
+ gdbm_reorganize(u->gdbm_file);
+}
+
+static void apply_entry(struct userdata *u, const char *name, struct entry *e) {
+ pa_sink_input *si;
+ pa_source_output *so;
+ uint32_t idx;
+
+ pa_assert(u);
+ pa_assert(name);
+ pa_assert(e);
+
+ for (si = pa_idxset_first(u->core->sink_inputs, &idx); si; si = pa_idxset_next(u->core->sink_inputs, &idx)) {
+ char *n;
+ pa_sink *s;
+
+ if (!(n = get_name(si->proplist, "sink_input")))
+ continue;
+
+ if (strcmp(name, n)) {
+ pa_xfree(n);
+ continue;
+ }
+
+ if (u->restore_volume) {
+ pa_log_info("Restoring volume for sink input %s.", name);
+ pa_sink_input_set_volume(si, pa_cvolume_remap(&e->volume, &e->channel_map, &si->channel_map));
+ }
+
+ if (u->restore_muted) {
+ pa_log_info("Restoring mute state for sink input %s.", name);
+ pa_sink_input_set_mute(si, e->muted);
+ }
+
+ if (u->restore_device &&
+ (s = pa_namereg_get(u->core, e->device, PA_NAMEREG_SOURCE, TRUE))) {
+
+ pa_log_info("Restoring device for stream %s.", name);
+ pa_sink_input_move_to(si, s);
+ }
+ }
+
+ for (so = pa_idxset_first(u->core->source_outputs, &idx); so; so = pa_idxset_next(u->core->source_outputs, &idx)) {
+ char *n;
+ pa_source *s;
+
+ if (!(n = get_name(so->proplist, "source-output")))
+ continue;
+
+ if (strcmp(name, n)) {
+ pa_xfree(n);
+ continue;
+ }
+
+ if (u->restore_device &&
+ (s = pa_namereg_get(u->core, e->device, PA_NAMEREG_SOURCE, TRUE))) {
+
+ pa_log_info("Restoring device for stream %s.", name);
+ pa_source_output_move_to(so, s);
+ }
+ }
+}
+
+static int extension_cb(pa_native_protocol *p, pa_module *m, pa_native_connection *c, uint32_t tag, pa_tagstruct *t) {
+ struct userdata *u;
+ uint32_t command;
+ pa_tagstruct *reply;
+
+ pa_assert(p);
+ pa_assert(m);
+ pa_assert(c);
+ pa_assert(t);
+
+ u = m->userdata;
+
+ if (pa_tagstruct_getu32(t, &command) < 0)
+ goto fail;
+
+ reply = pa_tagstruct_new(NULL, 0);
+ pa_tagstruct_putu32(reply, PA_COMMAND_REPLY);
+ pa_tagstruct_putu32(reply, tag);
+
+ switch (command) {
+ case SUBCOMMAND_TEST: {
+ if (!pa_tagstruct_eof(t))
+ goto fail;
+
+ pa_tagstruct_putu32(reply, EXT_VERSION);
+ break;
+ }
+
+ case SUBCOMMAND_READ: {
+ datum key;
+
+ if (!pa_tagstruct_eof(t))
+ goto fail;
+
+ key = gdbm_firstkey(u->gdbm_file);
+ while (key.dptr) {
+ datum next_key;
+ struct entry *e;
+ char *name;
+
+ next_key = gdbm_nextkey(u->gdbm_file, key);
+
+ name = pa_xstrndup(key.dptr, key.dsize);
+ pa_xfree(key.dptr);
+
+ if ((e = read_entry(u, name))) {
+ pa_tagstruct_puts(reply, name);
+ pa_tagstruct_put_channel_map(reply, &e->channel_map);
+ pa_tagstruct_put_cvolume(reply, &e->volume);
+ pa_tagstruct_puts(reply, e->device);
+ pa_tagstruct_put_boolean(reply, e->muted);
+
+ pa_xfree(e);
+ }
+
+ pa_xfree(name);
+
+ key = next_key;
+ }
+
+ break;
+ }
+
+ case SUBCOMMAND_WRITE: {
+ uint32_t mode;
+ pa_bool_t apply_immediately;
+
+ if (pa_tagstruct_getu32(t, &mode) < 0 ||
+ pa_tagstruct_get_boolean(t, &apply_immediately) < 0)
+ goto fail;
+
+ if (mode != PA_UPDATE_MERGE &&
+ mode != PA_UPDATE_REPLACE &&
+ mode != PA_UPDATE_SET)
+ goto fail;
+
+ if (mode == PA_UPDATE_SET)
+ clear_db(u);
+
+ while (!pa_tagstruct_eof(t)) {
+ const char *name, *device;
+ pa_bool_t muted;
+ struct entry entry;
+ datum key, data;
+
+ memset(&entry, 0, sizeof(entry));
+
+ if (pa_tagstruct_gets(t, &name) < 0 ||
+ pa_tagstruct_get_channel_map(t, &entry.channel_map) ||
+ pa_tagstruct_get_cvolume(t, &entry.volume) < 0 ||
+ pa_tagstruct_gets(t, &device) < 0 ||
+ pa_tagstruct_get_boolean(t, &muted) < 0)
+ goto fail;
+
+ if (entry.channel_map.channels != entry.volume.channels)
+ goto fail;
+
+ entry.muted = muted;
+ pa_strlcpy(entry.device, device, sizeof(entry.device));
+
+ key.dptr = (void*) name;
+ key.dsize = strlen(name);
+
+ data.dptr = (void*) &entry;
+ data.dsize = sizeof(entry);
+
+ if (gdbm_store(u->gdbm_file, key, data, mode == PA_UPDATE_REPLACE ? GDBM_REPLACE : GDBM_INSERT) == 1)
+ if (apply_immediately)
+ apply_entry(u, name, &entry);
+ }
+
+ trigger_save(u);
+
+ break;
+ }
+
+ case SUBCOMMAND_DELETE:
+
+ while (!pa_tagstruct_eof(t)) {
+ const char *name;
+ datum key;
+
+ if (pa_tagstruct_gets(t, &name) < 0)
+ goto fail;
+
+ key.dptr = (void*) name;
+ key.dsize = strlen(name);
+
+ gdbm_delete(u->gdbm_file, key);
+ }
+
+ trigger_save(u);
+
+ break;
+
+ case SUBCOMMAND_SUBSCRIBE: {
+
+ pa_bool_t enabled;
+
+ if (pa_tagstruct_get_boolean(t, &enabled) < 0 ||
+ !pa_tagstruct_eof(t))
+ goto fail;
+
+ if (enabled)
+ pa_idxset_put(u->subscribed, c, NULL);
+ else
+ pa_idxset_remove_by_data(u->subscribed, c, NULL);
+
+ break;
+ }
+
+ default:
+ goto fail;
+ }
+
+ pa_pstream_send_tagstruct(pa_native_connection_get_pstream(c), reply);
+ return 0;
+
+fail:
+
+ if (reply)
+ pa_tagstruct_free(reply);
+
+ return -1;
+}
+
+static pa_hook_result_t connection_unlink_hook_cb(pa_native_protocol *p, pa_native_connection *c, struct userdata *u) {
+ pa_assert(p);
+ pa_assert(c);
+ pa_assert(u);
+
+ pa_idxset_remove_by_data(u->subscribed, c, NULL);
+ return PA_HOOK_OK;
+}
+
int pa__init(pa_module*m) {
pa_modargs *ma = NULL;
struct userdata *u;
@@ -370,6 +664,13 @@ int pa__init(pa_module*m) {
u->restore_device = restore_device;
u->restore_volume = restore_volume;
u->restore_muted = restore_muted;
+ u->gdbm_file = NULL;
+ u->subscribed = pa_idxset_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
+
+ u->protocol = pa_native_protocol_get(m->core);
+ pa_native_protocol_install_ext(u->protocol, m, extension_cb);
+
+ u->connection_unlink_hook_slot = pa_hook_connect(&pa_native_protocol_hooks(u->protocol)[PA_NATIVE_HOOK_CONNECTION_UNLINK], PA_HOOK_NORMAL, (pa_hook_cb_t) connection_unlink_hook_cb, u);
u->subscription = pa_subscription_new(m->core, PA_SUBSCRIPTION_MASK_SINK_INPUT|PA_SUBSCRIPTION_MASK_SOURCE_OUTPUT, subscribe_callback, u);
@@ -436,11 +737,22 @@ void pa__done(pa_module*m) {
if (u->source_output_new_hook_slot)
pa_hook_slot_free(u->source_output_new_hook_slot);
+ if (u->connection_unlink_hook_slot)
+ pa_hook_slot_free(u->connection_unlink_hook_slot);
+
if (u->save_time_event)
u->core->mainloop->time_free(u->save_time_event);
if (u->gdbm_file)
gdbm_close(u->gdbm_file);
+ if (u->protocol) {
+ pa_native_protocol_remove_ext(u->protocol, m);
+ pa_native_protocol_unref(u->protocol);
+ }
+
+ if (u->subscribed)
+ pa_idxset_free(u->subscribed, NULL, NULL);
+
pa_xfree(u);
}
generated by cgit (git 2.34.1) at 2025-11-04 00:28:17 +0000