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https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-02 09:01:46 -05:00
device-manager: Provide a method for prefering/defering a device.
This allows clients to edit the priroity order. What is not yet in place is the initialisation of that priority list when new devices are detected or the cleaning (remove holes) when devices are removed. In order to keep the storage transparent I will likely remove the write functionality and replace it with a simple rename method. I also still need to expose the priority itself when reading the data.
This commit is contained in:
Colin Guthrie
parent
a9bd1ab69c
commit
4981268738
3 changed files with 238 additions and 0 deletions
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@ -87,9 +87,23 @@ struct userdata {
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#define ENTRY_VERSION 1
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#define NUM_ROLES 9
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enum {
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ROLE_NONE,
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ROLE_VIDEO,
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ROLE_MUSIC,
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ROLE_GAME,
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ROLE_EVENT,
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ROLE_PHONE,
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ROLE_ANIMATION,
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ROLE_PRODUCTION,
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ROLE_A11Y,
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};
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struct entry {
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uint8_t version;
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char description[PA_NAME_MAX];
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uint32_t priority[NUM_ROLES];
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} PA_GCC_PACKED;
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enum {
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@ -98,6 +112,8 @@ enum {
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SUBCOMMAND_WRITE,
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SUBCOMMAND_DELETE,
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SUBCOMMAND_ROLE_DEVICE_PRIORITY_ROUTING,
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SUBCOMMAND_PREFER_DEVICE,
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SUBCOMMAND_DEFER_DEVICE,
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SUBCOMMAND_SUBSCRIBE,
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SUBCOMMAND_EVENT
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};
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@ -346,6 +362,31 @@ static void apply_entry(struct userdata *u, const char *name, struct entry *e) {
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}
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}
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static uint32_t get_role_index(const char* role) {
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pa_assert(role);
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if (strcmp(role, "") == 0)
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return ROLE_NONE;
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if (strcmp(role, "video") == 0)
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return ROLE_VIDEO;
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if (strcmp(role, "music") == 0)
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return ROLE_MUSIC;
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if (strcmp(role, "game") == 0)
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return ROLE_GAME;
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if (strcmp(role, "event") == 0)
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return ROLE_EVENT;
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if (strcmp(role, "phone") == 0)
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return ROLE_PHONE;
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if (strcmp(role, "animation") == 0)
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return ROLE_ANIMATION;
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if (strcmp(role, "production") == 0)
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return ROLE_PRODUCTION;
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if (strcmp(role, "a11y") == 0)
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return ROLE_A11Y;
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return PA_INVALID_INDEX;
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}
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#define EXT_VERSION 1
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static int extension_cb(pa_native_protocol *p, pa_module *m, pa_native_connection *c, uint32_t tag, pa_tagstruct *t) {
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@ -526,6 +567,113 @@ static int extension_cb(pa_native_protocol *p, pa_module *m, pa_native_connectio
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break;
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}
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case SUBCOMMAND_PREFER_DEVICE:
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case SUBCOMMAND_DEFER_DEVICE: {
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const char *role, *device;
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struct entry *e;
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uint32_t role_index;
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if (pa_tagstruct_gets(t, &role) < 0 ||
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pa_tagstruct_gets(t, &device) < 0)
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goto fail;
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if (!role || !device || !*device)
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goto fail;
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role_index = get_role_index(role);
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if (PA_INVALID_INDEX == role_index)
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goto fail;
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if ((e = read_entry(u, device)) && ENTRY_VERSION == e->version) {
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pa_datum key;
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pa_datum data;
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pa_bool_t done;
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char* prefix;
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uint32_t priority;
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pa_bool_t haschanged = FALSE;
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if (strncmp(device, "sink:", 5) == 0)
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prefix = pa_xstrdup("sink:");
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else
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prefix = pa_xstrdup("source:");
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priority = e->priority[role_index];
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/* Now we need to load up all the other entries of this type and shuffle the priroities around */
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done = !pa_database_first(u->database, &key, NULL);
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while (!done && !haschanged) {
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pa_datum next_key;
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done = !pa_database_next(u->database, &key, &next_key, NULL);
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/* Only read devices with the right prefix */
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if (key.size > strlen(prefix) && strncmp(key.data, prefix, strlen(prefix)) == 0) {
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char *name;
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struct entry *e2;
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name = pa_xstrndup(key.data, key.size);
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pa_datum_free(&key);
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if ((e2 = read_entry(u, name))) {
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if (SUBCOMMAND_PREFER_DEVICE == command) {
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/* PREFER */
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if (e2->priority[role_index] == (priority - 1)) {
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e2->priority[role_index]++;
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haschanged = TRUE;
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}
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} else {
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/* DEFER */
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if (e2->priority[role_index] == (priority + 1)) {
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e2->priority[role_index]--;
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haschanged = TRUE;
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}
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}
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if (haschanged) {
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data.data = e2;
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data.size = sizeof(*e2);
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if (pa_database_set(u->database, &key, &data, FALSE))
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pa_log_warn("Could not save device");
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}
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pa_xfree(e2);
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}
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pa_xfree(name);
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}
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key = next_key;
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}
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/* Now write out our actual entry */
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if (haschanged) {
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if (SUBCOMMAND_PREFER_DEVICE == command)
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e->priority[role_index]--;
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else
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e->priority[role_index]++;
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key.data = (char *) device;
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key.size = strlen(device);
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data.data = e;
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data.size = sizeof(*e);
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if (pa_database_set(u->database, &key, &data, FALSE))
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pa_log_warn("Could not save device");
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trigger_save(u);
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}
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pa_xfree(e);
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pa_xfree(prefix);
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}
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break;
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}
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case SUBCOMMAND_SUBSCRIBE: {
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pa_bool_t enabled;
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@ -42,6 +42,8 @@ enum {
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SUBCOMMAND_WRITE,
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SUBCOMMAND_DELETE,
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SUBCOMMAND_ROLE_DEVICE_PRIORITY_ROUTING,
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SUBCOMMAND_PREFER_DEVICE,
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SUBCOMMAND_DEFER_DEVICE,
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SUBCOMMAND_SUBSCRIBE,
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SUBCOMMAND_EVENT
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};
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@ -321,6 +323,78 @@ pa_operation *pa_ext_device_manager_enable_role_device_priority_routing(
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return o;
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}
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pa_operation *pa_ext_device_manager_prefer_device(
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pa_context *c,
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const char* role,
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const char* device,
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pa_context_success_cb_t cb,
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void *userdata) {
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uint32_t tag;
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pa_operation *o = NULL;
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pa_tagstruct *t = NULL;
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pa_assert(c);
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pa_assert(PA_REFCNT_VALUE(c) >= 1);
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PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
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pa_assert(role);
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pa_assert(device);
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o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
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t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
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pa_tagstruct_putu32(t, PA_INVALID_INDEX);
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pa_tagstruct_puts(t, "module-device-manager");
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pa_tagstruct_putu32(t, SUBCOMMAND_PREFER_DEVICE);
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pa_tagstruct_puts(t, role);
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pa_tagstruct_puts(t, device);
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pa_pstream_send_tagstruct(c->pstream, t);
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pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
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return o;
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}
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pa_operation *pa_ext_device_manager_defer_device(
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pa_context *c,
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const char* role,
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const char* device,
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pa_context_success_cb_t cb,
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void *userdata) {
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uint32_t tag;
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pa_operation *o = NULL;
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pa_tagstruct *t = NULL;
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pa_assert(c);
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pa_assert(PA_REFCNT_VALUE(c) >= 1);
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PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
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pa_assert(role);
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pa_assert(device);
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o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
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t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
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pa_tagstruct_putu32(t, PA_INVALID_INDEX);
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pa_tagstruct_puts(t, "module-device-manager");
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pa_tagstruct_putu32(t, SUBCOMMAND_DEFER_DEVICE);
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pa_tagstruct_puts(t, role);
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pa_tagstruct_puts(t, device);
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pa_pstream_send_tagstruct(c->pstream, t);
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pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
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return o;
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}
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pa_operation *pa_ext_device_manager_subscribe(
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pa_context *c,
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int enable,
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@ -89,6 +89,22 @@ pa_operation *pa_ext_device_manager_enable_role_device_priority_routing(
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pa_context_success_cb_t cb,
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void *userdata);
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/** Subscribe to changes in the device database. \since 0.9.19 */
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pa_operation *pa_ext_device_manager_prefer_device(
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pa_context *c,
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const char* role,
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const char* device,
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pa_context_success_cb_t cb,
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void *userdata);
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/** Subscribe to changes in the device database. \since 0.9.19 */
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pa_operation *pa_ext_device_manager_defer_device(
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pa_context *c,
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const char* role,
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const char* device,
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pa_context_success_cb_t cb,
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void *userdata);
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/** Subscribe to changes in the device database. \since 0.9.19 */
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pa_operation *pa_ext_device_manager_subscribe(
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pa_context *c,
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