X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/d3a212da7e09f11753aafd76f16dccb1ade822e1..a4beda8eb9bdf34d055ba52c39b15b9580b27e6a:/slstatus.c?ds=inline

diff --git a/slstatus.c b/slstatus.c
index a3b6b6a..441c517 100644
--- a/slstatus.c
+++ b/slstatus.c
@@ -33,7 +33,6 @@ struct arg {
 	const char *args;
 };
 
-static void setstatus(const char *);
 static char *smprintf(const char *, ...);
 static char *battery_perc(const char *);
 static char *cpu_perc(void);
@@ -64,14 +63,6 @@ static Display *dpy;
 
 #include "config.h"
 
-static void
-setstatus(const char *str)
-{
-	/* set WM_NAME via X11 */
-	XStoreName(dpy, DefaultRootWindow(dpy), str);
-	XSync(dpy, False);
-}
-
 static char *
 smprintf(const char *fmt, ...)
 {
@@ -156,7 +147,6 @@ cpu_perc(void)
 	fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
 	fclose(fp);
 
-	/* wait a second (for avg values) */
 	sleep(1);
 
 	fp = fopen("/proc/stat","r");
@@ -491,50 +481,37 @@ uid(void)
 }
 
 
-static char *
-vol_perc(const char *soundcard)
-{
-	/*
-	 * TODO: FIXME: 
-	 * https://github.com/drkh5h/slstatus/issues/12
-	 */
-	int mute = 0;
-	long vol = 0, max = 0, min = 0;
+static char * 
+vol_perc(const char *snd_card)
+{ /* thanks to botika for this function */
+	long int vol, max, min;
 	snd_mixer_t *handle;
-	snd_mixer_elem_t *pcm_mixer, *mas_mixer;
-	snd_mixer_selem_id_t *vol_info, *mute_info;
+	snd_mixer_elem_t *elem;
+	snd_mixer_selem_id_t *s_elem;
 
 	snd_mixer_open(&handle, 0);
-	snd_mixer_attach(handle, soundcard);
+	snd_mixer_attach(handle, snd_card);
 	snd_mixer_selem_register(handle, NULL, NULL);
 	snd_mixer_load(handle);
+	snd_mixer_selem_id_malloc(&s_elem);
+	snd_mixer_selem_id_set_name(s_elem, "Master");
+	elem = snd_mixer_find_selem(handle, s_elem);
 
-	snd_mixer_selem_id_malloc(&vol_info);
-	snd_mixer_selem_id_malloc(&mute_info);
-	if (vol_info == NULL || mute_info == NULL) {
-		fprintf(stderr, "Could not get alsa volume.\n");
+	if (elem == NULL) {
+		snd_mixer_selem_id_free(s_elem);
+		snd_mixer_close(handle);
+		perror("alsa error: ");
 		return smprintf(UNKNOWN_STR);
 	}
-	snd_mixer_selem_id_set_name(vol_info, ALSA_CHANNEL);
-	snd_mixer_selem_id_set_name(mute_info, ALSA_CHANNEL);
-	pcm_mixer = snd_mixer_find_selem(handle, vol_info);
-	mas_mixer = snd_mixer_find_selem(handle, mute_info);
-
-	snd_mixer_selem_get_playback_volume_range((snd_mixer_elem_t *)pcm_mixer, &min, &max);
-	snd_mixer_selem_get_playback_volume((snd_mixer_elem_t *)pcm_mixer, SND_MIXER_SCHN_MONO, &vol);
-	snd_mixer_selem_get_playback_switch(mas_mixer, SND_MIXER_SCHN_MONO, &mute);
-
-	if (vol_info)
-		snd_mixer_selem_id_free(vol_info);
-	if (mute_info)
-		snd_mixer_selem_id_free(mute_info);
-	if (handle)
-		snd_mixer_close(handle);
 
-	if (!mute)
-		return smprintf("mute");
-	else
-		return smprintf("%d%%", (vol * 100) / max);
+	snd_mixer_handle_events(handle);
+	snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
+	snd_mixer_selem_get_playback_volume(elem, 0, &vol);
+
+	snd_mixer_selem_id_free(s_elem);
+	snd_mixer_close(handle);
+
+	return smprintf("%d", (vol * 100) / max);
 }
 
 static char *
@@ -624,11 +601,8 @@ main(void)
 	char *res, *element;
 	struct arg argument;
 
-	dpy = XOpenDisplay(0x0);
-	if (!dpy) {
-		fprintf(stderr, "Cannot open display!\n");
-		exit(1);
-	}
+	stderr = stderr;
+	dpy = XOpenDisplay(NULL);
 
 	for (;;) {
 		memset(status_string, 0, sizeof(status_string));
@@ -647,11 +621,11 @@ main(void)
 			free(res);
 			free(element);
 		}
-
-		setstatus(status_string);
-		sleep(UPDATE_INTERVAL -1);
 	}
 
+	XStoreName(dpy, DefaultRootWindow(dpy), status_string);
+	XSync(dpy, False);
 	XCloseDisplay(dpy);
+
 	return 0;
 }