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-rw-r--r--binding/audiomixer-binding.c402
1 files changed, 0 insertions, 402 deletions
diff --git a/binding/audiomixer-binding.c b/binding/audiomixer-binding.c
deleted file mode 100644
index 2c8981a..0000000
--- a/binding/audiomixer-binding.c
+++ /dev/null
@@ -1,402 +0,0 @@
-/*
- * Copyright © 2019 Collabora Ltd.
- * Copyright © 2019 Konsulko Group
- * @author George Kiagiadakis <george.kiagiadakis@collabora.com>
- *
- * SPDX-License-Identifier: MIT
- */
-
-#include <string.h>
-#include <json-c/json.h>
-#include <afb/afb-binding.h>
-#include <systemd/sd-event.h>
-#include "audiomixer.h"
-
-static struct audiomixer *audiomixer;
-static afb_event_t controls_changed;
-static afb_event_t volume_changed;
-static afb_event_t mute_changed;
-
-static const char *signalcomposer_events[] = {
- "event.volume.up",
- "event.volume.down",
- "event.volume.mute",
- NULL,
-};
-
-static void
-audiomixer_controls_changed_deferred(int signum, void *arg)
-{
- AFB_DEBUG("controls changed");
- afb_event_push(controls_changed, NULL);
-}
-
-struct value_changed_data
-{
- unsigned int change_mask;
- struct mixer_control control;
-};
-
-static void
-audiomixer_value_changed_deferred(int signum, void *data)
-{
- struct value_changed_data *d = data;
- json_object *json;
-
- AFB_DEBUG("value changed");
-
- json = json_object_new_object();
- json_object_object_add(json, "control",
- json_object_new_string(d->control.name));
-
- if (d->change_mask & MIXER_CONTROL_CHANGE_FLAG_VOLUME) {
- json_object_object_add(json, "value",
- json_object_new_double(d->control.volume));
- afb_event_push(volume_changed, json);
- } else if (d->change_mask & MIXER_CONTROL_CHANGE_FLAG_MUTE) {
- json_object_object_add(json, "value",
- json_object_new_int(d->control.mute));
- afb_event_push(mute_changed, json);
- }
-
- free(d);
-}
-
-/* called in audiomixer's thread */
-static void
-audiomixer_controls_changed(void *data)
-{
- afb_api_t api = data;
- afb_api_queue_job (api, audiomixer_controls_changed_deferred, NULL,
- (void *) 0x1, 0);
-}
-
-
-/* called in audiomixer's thread */
-static void
-audiomixer_value_changed(void *data,
- unsigned int change_mask,
- const struct mixer_control *control)
-{
- afb_api_t api = data;
- struct value_changed_data *d = calloc(1, sizeof(*d));
-
- d->change_mask = change_mask;
- d->control = *control;
-
- afb_api_queue_job (api, audiomixer_value_changed_deferred, d,
- (void *) 0x1, 0);
-}
-
-static const struct audiomixer_events audiomixer_events = {
- .controls_changed = audiomixer_controls_changed,
- .value_changed = audiomixer_value_changed,
-};
-
-static int
-cleanup(sd_event_source *s, void *data)
-{
- audiomixer_free(audiomixer);
- audiomixer = NULL;
- return 0;
-}
-
-static int
-init(afb_api_t api)
-{
- int ret;
-
- ret = afb_daemon_require_api("signal-composer", 1);
- if (ret) {
- AFB_WARNING("unable to initialize signal-composer binding");
- } else {
- const char **tmp = signalcomposer_events;
- json_object *args = json_object_new_object();
- json_object *signals = json_object_new_array();
-
- while (*tmp) {
- json_object_array_add(signals, json_object_new_string(*tmp++));
- }
- json_object_object_add(args, "signal", signals);
- if(json_object_array_length(signals)) {
- afb_api_call_sync(api, "signal-composer", "subscribe",
- args, NULL, NULL, NULL);
- } else {
- json_object_put(args);
- }
- }
-
- sd_event *e = afb_daemon_get_event_loop();
-
- controls_changed = afb_api_make_event(api, "controls_changed");
- volume_changed = afb_api_make_event(api, "volume_changed");
- mute_changed = afb_api_make_event(api, "mute_changed");
-
- audiomixer = audiomixer_new();
- sd_event_add_exit(e, NULL, cleanup, NULL);
-
- audiomixer_add_event_listener(audiomixer, &audiomixer_events, api);
-
- return 0;
-}
-
-static void
-list_controls_cb(afb_req_t request)
-{
- json_object *ret_json, *nest_json;
- const struct mixer_control **ctls;
- unsigned int n_controls, i;
-
- audiomixer_lock(audiomixer);
-
- if (audiomixer_ensure_controls(audiomixer, 3) < 0) {
- AFB_REQ_NOTICE(request, "No mixer controls were exposed "
- "in PipeWire after 3 seconds");
- }
-
- ctls = audiomixer_get_active_controls(audiomixer, &n_controls);
-
- ret_json = json_object_new_array();
- for (i = 0; i < n_controls; i++) {
- nest_json = json_object_new_object();
- json_object_object_add(nest_json, "control",
- json_object_new_string(ctls[i]->name));
- json_object_object_add(nest_json, "volume",
- json_object_new_double(ctls[i]->volume));
- json_object_object_add(nest_json, "mute",
- json_object_new_int(ctls[i]->mute));
- json_object_array_add(ret_json, nest_json);
- }
- afb_req_success(request, ret_json, NULL);
-
- audiomixer_unlock(audiomixer);
-}
-
-static void
-volume_cb(afb_req_t request)
-{
- json_object *ret_json;
- const char *control = afb_req_value(request, "control");
- const char *value = afb_req_value(request, "value");
- const struct mixer_control *ctl;
- double volume;
-
- audiomixer_lock(audiomixer);
-
- if (!control) {
- afb_req_fail(request, "failed",
- "Invalid arguments: missing 'control'");
- goto unlock;
- }
-
- if (audiomixer_ensure_controls(audiomixer, 3) < 0) {
- AFB_REQ_NOTICE(request, "No mixer controls were exposed "
- "in PipeWire after 3 seconds");
- }
-
- ctl = audiomixer_find_control(audiomixer, control);
- if (!ctl) {
- afb_req_fail(request, "failed", "Could not find control");
- goto unlock;
- }
-
- if(value) {
- char *endptr;
- volume = strtod(value, &endptr);
- if (endptr == value || volume < -0.00001 || volume > 1.00001) {
- afb_req_fail(request, "failed",
- "Invalid volume value (must be between 0.0 and 1.0)");
- goto unlock;
- }
-
- audiomixer_change_volume(audiomixer, ctl, volume);
- } else {
- volume = ctl->volume;
- }
-
- ret_json = json_object_new_object();
- json_object_object_add(ret_json, "volume", json_object_new_double(volume));
- afb_req_success(request, ret_json, NULL);
-
-unlock:
- audiomixer_unlock(audiomixer);
-}
-
-static void
-mute_cb(afb_req_t request)
-{
- json_object *ret_json;
- const char *control = afb_req_value(request, "control");
- const char *value = afb_req_value(request, "value");
- const struct mixer_control *ctl;
- int mute;
-
- audiomixer_lock(audiomixer);
-
- if (!control) {
- afb_req_fail(request, "failed",
- "Invalid arguments: missing 'control'");
- goto unlock;
- }
-
- if (audiomixer_ensure_controls(audiomixer, 3) < 0) {
- AFB_REQ_NOTICE(request, "No mixer controls were exposed "
- "in PipeWire after 3 seconds");
- }
-
- ctl = audiomixer_find_control(audiomixer, control);
- if (!ctl) {
- afb_req_fail(request, "failed", "Could not find control");
- goto unlock;
- }
-
- if(value) {
- char *endptr;
- mute = (int) strtol(value, &endptr, 10);
- if (endptr == value || mute < 0 || mute > 1) {
- afb_req_fail(request, "failed",
- "Invalid mute value (must be integer 0 or 1)");
- goto unlock;
- }
-
- audiomixer_change_mute(audiomixer, ctl, mute);
- } else {
- mute = ctl->mute;
- }
-
- ret_json = json_object_new_object();
- json_object_object_add(ret_json, "mute", json_object_new_int(mute));
- afb_req_success(request, ret_json, NULL);
-
-unlock:
- audiomixer_unlock(audiomixer);
-}
-
-static void
-subscribe_cb(afb_req_t request)
-{
- const char *eventstr = afb_req_value(request, "event");
- afb_event_t event;
-
- if (!eventstr) {
- afb_req_fail(request, "failed",
- "Invalid arguments: missing 'event'");
- return;
- }
-
- if (!strcmp(eventstr, "controls_changed"))
- event = controls_changed;
- else if (!strcmp(eventstr, "volume_changed"))
- event = volume_changed;
- else if (!strcmp(eventstr, "mute_changed"))
- event = mute_changed;
- else {
- afb_req_fail(request, "failed", "Invalid event name");
- return;
- }
-
- if (afb_req_subscribe(request, event) != 0)
- afb_req_fail(request, "failed", "Failed to subscribe to event");
- else
- afb_req_success(request, NULL, "Subscribed");
-}
-
-static void
-unsubscribe_cb(afb_req_t request)
-{
- const char *eventstr = afb_req_value(request, "event");
- afb_event_t event;
-
- if (!eventstr) {
- afb_req_fail(request, "failed",
- "Invalid arguments: missing 'event'");
- return;
- }
-
- if (!strcmp(eventstr, "controls_changed"))
- event = controls_changed;
- else if (!strcmp(eventstr, "volume_changed"))
- event = volume_changed;
- else if (!strcmp(eventstr, "mute_changed"))
- event = mute_changed;
- else {
- afb_req_fail(request, "failed", "Invalid event name");
- return;
- }
-
- if (afb_req_unsubscribe(request, event) != 0)
- afb_req_fail(request, "failed", "Failed to unsubscribe from event");
- else
- afb_req_success(request, NULL, "Unsubscribed");
-}
-
-static void
-onevent(afb_api_t api, const char *event, struct json_object *object)
-{
- const struct mixer_control *ctl;
- json_object *tmp = NULL;
- const char *uid;
- const char *value;
-
- json_object_object_get_ex(object, "uid", &tmp);
- if (tmp == NULL)
- return;
-
- uid = json_object_get_string(tmp);
- if (strncmp(uid, "event.volume.", 13))
- return;
-
- json_object_object_get_ex(object, "value", &tmp);
- if (tmp == NULL)
- return;
-
- value = json_object_get_string(tmp);
- if (strncmp(value, "true", 4))
- return;
-
- audiomixer_lock(audiomixer);
-
- ctl = audiomixer_find_control(audiomixer, "Master Playback");
- if (!ctl)
- goto unlock;
-
- if (!strcmp(uid, "event.volume.mute")) {
- audiomixer_change_mute(audiomixer, ctl, !ctl->mute);
- } else {
- double volume = ctl->volume;
-
- if (!strcmp(uid, "event.volume.up")) {
- volume += 0.05; // up 5%
- if (volume > 1.0)
- volume = 1.0; // clamp to 100%
- } else if (!strcmp(uid, "event.volume.down")) {
- volume -= 0.05; // down 5%
- if (volume < 0.0)
- volume = 0.0; // clamp to 0%
- } else {
- AFB_WARNING("Unhandled signal-composer uid '%s'", uid);
- goto unlock;
- }
- audiomixer_change_volume(audiomixer, ctl, volume);
- }
-
-unlock:
- audiomixer_unlock(audiomixer);
-}
-
-static const afb_verb_t verbs[]= {
- { .verb = "list_controls", .callback = list_controls_cb, .info = "List the available controls" },
- { .verb = "volume", .callback = volume_cb, .info = "Get/Set volume" },
- { .verb = "mute", .callback = mute_cb, .info = "Get/Set mute" },
- { .verb = "subscribe", .callback = subscribe_cb, .info = "Subscribe to mixer events" },
- { .verb = "unsubscribe", .callback = unsubscribe_cb, .info = "Unsubscribe from mixer events" },
- { }
-};
-
-const afb_binding_t afbBindingV3 = {
- .api = "audiomixer",
- .specification = "AudioMixer API",
- .verbs = verbs,
- .onevent = onevent,
- .init = init,
-};