travis: re-add libpulse-dev

[i3/i3status] / src / print_volume.c

diff --git a/src/print_volume.c b/src/print_volume.c
index bc469f33e7dbdf06bb9c7fa7e71179b9e804b4b9..b1a7e7401e49fcf6e94a611a7851698919c7339a 100644 (file)
--- a/src/print_volume.c
+++ b/src/print_volume.c
@@ -27,17 +27,80 @@
 #include "i3status.h"
 #include "queue.h"
 
+static char *apply_volume_format(const char *fmt, char *outwalk, int ivolume) {
+    const char *walk = fmt;
+
+    for (; *walk != '\0'; walk++) {
+        if (*walk != '%') {
+            *(outwalk++) = *walk;
+            continue;
+        }
+        if (BEGINS_WITH(walk + 1, "%")) {
+            outwalk += sprintf(outwalk, "%%");
+            walk += strlen("%");
+        }
+        if (BEGINS_WITH(walk + 1, "volume")) {
+            outwalk += sprintf(outwalk, "%d%%", ivolume);
+            walk += strlen("volume");
+        }
+    }
+    return outwalk;
+}
+
 void print_volume(yajl_gen json_gen, char *buffer, const char *fmt, const char *fmt_muted, const char *device, const char *mixer, int mixer_idx) {
     char *outwalk = buffer;
     int pbval = 1;
 
-    /* Printing volume only works with ALSA at the moment */
+    /* Printing volume works with ALSA and PulseAudio at the moment */
     if (output_format == O_I3BAR) {
         char *instance;
         asprintf(&instance, "%s.%s.%d", device, mixer, mixer_idx);
         INSTANCE(instance);
         free(instance);
     }
+
+    /* Try PulseAudio first */
+
+    /* If the device name has the format "pulse[:N]" where N is the
+     * index of the PulseAudio sink then force PulseAudio, optionally
+     * overriding the default sink */
+    if (!strncasecmp(device, "pulse", strlen("pulse"))) {
+        uint32_t sink_idx = device[5] == ':' ? (uint32_t)atoi(device + 6)
+                                             : DEFAULT_SINK_INDEX;
+        int cvolume = pulse_initialize() ? volume_pulseaudio(sink_idx) : 0;
+        int ivolume = DECOMPOSE_VOLUME(cvolume);
+        bool muted = DECOMPOSE_MUTED(cvolume);
+        if (muted) {
+            START_COLOR("color_degraded");
+            pbval = 0;
+        }
+        /* negative result means error, stick to 0 */
+        if (ivolume < 0)
+            ivolume = 0;
+        outwalk = apply_volume_format(muted ? fmt_muted : fmt,
+                                      outwalk,
+                                      ivolume);
+        goto out;
+    } else if (!strcasecmp(device, "default") && pulse_initialize()) {
+        /* no device specified or "default" set */
+        int cvolume = volume_pulseaudio(DEFAULT_SINK_INDEX);
+        int ivolume = DECOMPOSE_VOLUME(cvolume);
+        bool muted = DECOMPOSE_MUTED(cvolume);
+        if (ivolume >= 0) {
+            if (muted) {
+                START_COLOR("color_degraded");
+                pbval = 0;
+            }
+            outwalk = apply_volume_format(muted ? fmt_muted : fmt,
+                                          outwalk,
+                                          ivolume);
+            goto out;
+        }
+        /* negative result means error, fail PulseAudio attempt */
+    }
+/* If some other device was specified or PulseAudio is not detected,
+ * proceed to ALSA / OSS */
+
 #ifdef LINUX
     int err;
     snd_mixer_t *m;
@@ -113,21 +176,8 @@ void print_volume(yajl_gen json_gen, char *buffer, const char *fmt, const char *
     snd_mixer_close(m);
     snd_mixer_selem_id_free(sid);
 
-    const char *walk = fmt;
-    for (; *walk != '\0'; walk++) {
-        if (*walk != '%') {
-            *(outwalk++) = *walk;
-            continue;
-        }
-        if (BEGINS_WITH(walk + 1, "%")) {
-            outwalk += sprintf(outwalk, "%%");
-            walk += strlen("%");
-        }
-        if (BEGINS_WITH(walk + 1, "volume")) {
-            outwalk += sprintf(outwalk, "%d%%", avg);
-            walk += strlen("volume");
-        }
-    }
+    outwalk = apply_volume_format(fmt, outwalk, avg);
+
 #endif
 #if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
     char *mixerpath;
@@ -162,21 +212,7 @@ void print_volume(yajl_gen json_gen, char *buffer, const char *fmt, const char *
         pbval = 0;
     }
 
-    const char *walk = fmt;
-    for (; *walk != '\0'; walk++) {
-        if (*walk != '%') {
-            *(outwalk++) = *walk;
-            continue;
-        }
-        if (BEGINS_WITH(walk + 1, "%")) {
-            outwalk += sprintf(outwalk, "%%");
-            walk += strlen("%");
-        }
-        if (BEGINS_WITH(walk + 1, "volume")) {
-            outwalk += sprintf(outwalk, "%d%%", vol & 0x7f);
-            walk += strlen("volume");
-        }
-    }
+    outwalk = apply_volume_format(fmt, outwalk, vol & 0x7f);
     close(mixfd);
 #endif