1#include <pulse/pulseaudio.h>
  2#include <string.h>
  3#include "glitch.h"
  4
  5extern WindowManager wm;
  6
  7static void trigger_redraw(void) {
  8	if (!wm.dpy || wm.root == None) return;
  9
 10	XLockDisplay(wm.dpy);
 11	XEvent ev = {0};
 12	ev.type = Expose;
 13	ev.xexpose.window = wm.root;
 14	ev.xexpose.x = 0;
 15	ev.xexpose.y = 0;
 16	ev.xexpose.width = 1;
 17	ev.xexpose.height = 1;
 18	ev.xexpose.count = 0;
 19
 20	XSendEvent(wm.dpy, wm.root, False, ExposureMask, &ev);
 21	XFlush(wm.dpy);
 22	XUnlockDisplay(wm.dpy);
 23}
 24
 25static void source_info_callback(pa_context *c, const pa_source_info *i, int eol, void *userdata) {
 26	(void)c;
 27	(void)userdata;
 28	if (eol > 0 || !i) return;
 29
 30	// Check if this is the default source or matches our criteria
 31	// For simplicity, we can just track the mute state of the default source
 32	// Pulseaudio usually calls this for the specific source we requested
 33	int muted = i->mute;
 34	if (wm.mic_muted != muted) {
 35		wm.mic_muted = muted;
 36		trigger_redraw();
 37	}
 38}
 39
 40static void update_mic_state(pa_context *c) {
 41	pa_operation *o = pa_context_get_source_info_by_name(c, "@DEFAULT_SOURCE@", source_info_callback, NULL);
 42	if (o) pa_operation_unref(o);
 43}
 44
 45static void subscribe_callback(pa_context *c, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
 46	(void)idx;
 47	(void)userdata;
 48	if ((t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) == PA_SUBSCRIPTION_EVENT_SOURCE) {
 49		update_mic_state(c);
 50	}
 51}
 52
 53static void context_state_callback(pa_context *c, void *userdata) {
 54	(void)userdata;
 55	switch (pa_context_get_state(c)) {
 56		case PA_CONTEXT_READY:
 57			pa_context_set_subscribe_callback(c, subscribe_callback, NULL);
 58			pa_context_subscribe(c, PA_SUBSCRIPTION_MASK_SOURCE, NULL, NULL);
 59			update_mic_state(c);
 60			break;
 61		case PA_CONTEXT_FAILED:
 62		case PA_CONTEXT_TERMINATED:
 63			break;
 64		case PA_CONTEXT_UNCONNECTED:
 65		case PA_CONTEXT_CONNECTING:
 66		case PA_CONTEXT_AUTHORIZING:
 67		case PA_CONTEXT_SETTING_NAME:
 68			break;
 69	}
 70}
 71
 72void init_audio(void) {
 73	wm.pa_mainloop = pa_threaded_mainloop_new();
 74	if (!wm.pa_mainloop) return;
 75
 76	wm.pa_ctx = pa_context_new(pa_threaded_mainloop_get_api(wm.pa_mainloop), "glitch-wm");
 77	if (!wm.pa_ctx) return;
 78
 79	pa_context_set_state_callback(wm.pa_ctx, context_state_callback, NULL);
 80
 81	if (pa_context_connect(wm.pa_ctx, NULL, PA_CONTEXT_NOFLAGS, NULL) < 0) {
 82		return;
 83	}
 84
 85	if (pa_threaded_mainloop_start(wm.pa_mainloop) < 0) {
 86		return;
 87	}
 88}
 89
 90void deinit_audio(void) {
 91	if (wm.pa_mainloop) pa_threaded_mainloop_stop(wm.pa_mainloop);
 92	if (wm.pa_ctx) pa_context_unref(wm.pa_ctx);
 93	if (wm.pa_mainloop) pa_threaded_mainloop_free(wm.pa_mainloop);
 94}
 95
 96void toggle_mic_mute(const Arg *arg) {
 97	(void)arg;
 98	if (!wm.pa_ctx || pa_context_get_state(wm.pa_ctx) != PA_CONTEXT_READY) return;
 99
100	// Instant UI feedback
101	wm.mic_muted = !wm.mic_muted;
102	trigger_redraw();
103
104	pa_threaded_mainloop_lock(wm.pa_mainloop);
105	pa_operation *o = pa_context_set_source_mute_by_name(wm.pa_ctx, "@DEFAULT_SOURCE@", wm.mic_muted, NULL, NULL);
106	if (o) pa_operation_unref(o);
107	pa_threaded_mainloop_unlock(wm.pa_mainloop);
108}