From 88c3db6636988e39c99220ba4969625b709e97ed Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Mon, 4 Aug 2008 19:01:13 +0200 Subject: add protocol extension to module-stream-restore --- src/modules/module-stream-restore.c | 332 ++++++++++++++++++++++++++++++++++-- 1 file changed, 322 insertions(+), 10 deletions(-) (limited to 'src/modules/module-stream-restore.c') 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 #include #include +#include +#include +#include #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); } -- cgit