add protocol extension to module-stream-restore

This commit is contained in:
Lennart Poettering 2008-08-04 19:01:13 +02:00
parent 6cc3a615fa
commit 88c3db6636

View file

@ -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);
}