Better file structure and build system

[sysstatus.git] / src / status / volume_alsa.c

diff --git a/src/status/volume_alsa.c b/src/status/volume_alsa.c
new file mode 100644 (file)
index 0000000..41f61b8
--- /dev/null
+++ b/src/status/volume_alsa.c
@@ -0,0 +1,71 @@
+#include <alsa/asoundlib.h>
+
+#include "status/volume_alsa.h"
+
+
+int status_volume_alsa(char *cardname, char *mixername, snd_mixer_selem_channel_id_t channel)
+{
+  snd_mixer_t *handle = NULL;
+  snd_mixer_elem_t *elem;
+  snd_mixer_selem_id_t *sid;
+
+  long min = 0, max = 0;
+  long volume;
+  int on_off;
+
+
+  snd_mixer_selem_id_alloca(&sid);
+
+  if (snd_mixer_open(&handle, 0) < 0) {
+    return -1;
+  }
+
+  if (snd_mixer_attach(handle, cardname) < 0) {
+    goto ERROR;
+  }
+
+  snd_mixer_selem_id_set_name(sid, mixername);
+
+  if (snd_mixer_selem_register(handle, NULL, NULL) < 0) {
+    goto ERROR;
+  }
+
+  if (snd_mixer_load(handle) < 0) {
+    goto ERROR;
+  }
+
+  elem = snd_mixer_find_selem(handle, sid);
+  if (!elem) {
+    goto ERROR;
+  }
+
+  if (snd_mixer_selem_has_playback_volume(elem)
+      && snd_mixer_selem_has_playback_channel(elem, channel)) {
+    snd_mixer_selem_get_playback_switch(elem, channel, &on_off);
+    if (on_off) {
+      fputs("^fg(#22FF22)", stdout);
+    } else {
+      fputs("^fg(red)", stdout);
+    }
+
+    snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
+
+    snd_mixer_selem_get_playback_volume(elem, channel, &volume);
+    fputs("^ca(1, amixer sset Master toggle)", stdout);
+    fputs("^ca(4, amixer sset Master 2+ unmute)", stdout);
+    fputs("^ca(5, amixer sset Master 2- unmute)", stdout);
+    printf(" Vol: %d ", (int)volume);
+    fputs("^ca()", stdout);
+    fputs("^ca()", stdout);
+    fputs("^ca()", stdout);
+  }
+
+  snd_mixer_close(handle);
+
+  return 0;
+
+  ERROR:
+
+  snd_mixer_close(handle);
+  return -1;
+}