1 // vim:ts=4:sw=4:expandtab
8 #include <yajl/yajl_gen.h>
9 #include <yajl/yajl_version.h>
12 #include <alsa/asoundlib.h>
16 #if defined(__FreeBSD__) || defined(__DragonFly__)
19 #include <sys/soundcard.h>
25 #include <sys/audioio.h>
26 #include <sys/ioctl.h>
32 static char *apply_volume_format(const char *fmt, char *outwalk, int ivolume) {
33 const char *walk = fmt;
35 for (; *walk != '\0'; walk++) {
40 if (BEGINS_WITH(walk + 1, "%")) {
41 outwalk += sprintf(outwalk, "%s", pct_mark);
44 if (BEGINS_WITH(walk + 1, "volume")) {
45 outwalk += sprintf(outwalk, "%d%s", ivolume, pct_mark);
46 walk += strlen("volume");
52 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) {
53 char *outwalk = buffer;
56 /* Printing volume works with ALSA and PulseAudio at the moment */
57 if (output_format == O_I3BAR) {
59 asprintf(&instance, "%s.%s.%d", device, mixer, mixer_idx);
65 /* Try PulseAudio first */
67 /* If the device name has the format "pulse[:N]" where N is the
68 * index of the PulseAudio sink then force PulseAudio, optionally
69 * overriding the default sink */
70 if (!strncasecmp(device, "pulse", strlen("pulse"))) {
71 uint32_t sink_idx = device[strlen("pulse")] == ':' ? (uint32_t)atoi(device + strlen("pulse:")) : DEFAULT_SINK_INDEX;
72 const char *sink_name = device[strlen("pulse")] == ':' &&
73 !isdigit(device[strlen("pulse:")])
74 ? device + strlen("pulse:")
76 int cvolume = pulse_initialize() ? volume_pulseaudio(sink_idx, sink_name) : 0;
77 int ivolume = DECOMPOSE_VOLUME(cvolume);
78 bool muted = DECOMPOSE_MUTED(cvolume);
80 START_COLOR("color_degraded");
83 /* negative result means error, stick to 0 */
86 outwalk = apply_volume_format(muted ? fmt_muted : fmt,
90 } else if (!strcasecmp(device, "default") && pulse_initialize()) {
91 /* no device specified or "default" set */
92 int cvolume = volume_pulseaudio(DEFAULT_SINK_INDEX, NULL);
93 int ivolume = DECOMPOSE_VOLUME(cvolume);
94 bool muted = DECOMPOSE_MUTED(cvolume);
97 START_COLOR("color_degraded");
100 outwalk = apply_volume_format(muted ? fmt_muted : fmt,
105 /* negative result means error, fail PulseAudio attempt */
107 /* If some other device was specified or PulseAudio is not detected,
108 * proceed to ALSA / OSS */
114 snd_mixer_selem_id_t *sid;
115 snd_mixer_elem_t *elem;
119 if ((err = snd_mixer_open(&m, 0)) < 0) {
120 fprintf(stderr, "i3status: ALSA: Cannot open mixer: %s\n", snd_strerror(err));
124 /* Attach this mixer handle to the given device */
125 if ((err = snd_mixer_attach(m, device)) < 0) {
126 fprintf(stderr, "i3status: ALSA: Cannot attach mixer to device: %s\n", snd_strerror(err));
131 /* Register this mixer */
132 if ((err = snd_mixer_selem_register(m, NULL, NULL)) < 0) {
133 fprintf(stderr, "i3status: ALSA: snd_mixer_selem_register: %s\n", snd_strerror(err));
138 if ((err = snd_mixer_load(m)) < 0) {
139 fprintf(stderr, "i3status: ALSA: snd_mixer_load: %s\n", snd_strerror(err));
144 snd_mixer_selem_id_malloc(&sid);
150 /* Find the given mixer */
151 snd_mixer_selem_id_set_index(sid, mixer_idx);
152 snd_mixer_selem_id_set_name(sid, mixer);
153 if (!(elem = snd_mixer_find_selem(m, sid))) {
154 fprintf(stderr, "i3status: ALSA: Cannot find mixer %s (index %i)\n",
155 snd_mixer_selem_id_get_name(sid), snd_mixer_selem_id_get_index(sid));
157 snd_mixer_selem_id_free(sid);
161 /* Get the volume range to convert the volume later */
162 snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
164 snd_mixer_handle_events(m);
165 snd_mixer_selem_get_playback_volume(elem, 0, &val);
167 float avgf = ((float)val / max) * 100;
169 avg = (avgf - avg < 0.5 ? avg : (avg + 1));
174 if (snd_mixer_selem_has_playback_switch(elem)) {
175 if ((err = snd_mixer_selem_get_playback_switch(elem, 0, &pbval)) < 0)
176 fprintf(stderr, "i3status: ALSA: playback_switch: %s\n", snd_strerror(err));
178 START_COLOR("color_degraded");
184 snd_mixer_selem_id_free(sid);
186 outwalk = apply_volume_format(fmt, outwalk, avg);
189 #if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
191 char defaultmixer[] = "/dev/mixer";
192 int mixfd, vol, devmask = 0;
196 asprintf(&mixerpath, "/dev/mixer%d", mixer_idx);
198 mixerpath = defaultmixer;
200 if ((mixfd = open(mixerpath, O_RDWR)) < 0) {
201 #if defined(__OpenBSD__)
202 warn("audioio: Cannot open mixer");
204 warn("OSS: Cannot open mixer");
212 #if defined(__OpenBSD__)
213 int oclass_idx = -1, master_idx = -1, master_mute_idx = -1;
214 int master_next = AUDIO_MIXER_LAST;
215 mixer_devinfo_t devinfo, devinfo2;
219 while (ioctl(mixfd, AUDIO_MIXER_DEVINFO, &devinfo) >= 0) {
220 if (devinfo.type != AUDIO_MIXER_CLASS) {
224 if (strncmp(devinfo.label.name, AudioCoutputs, MAX_AUDIO_DEV_LEN) == 0)
225 oclass_idx = devinfo.index;
231 while (ioctl(mixfd, AUDIO_MIXER_DEVINFO, &devinfo2) >= 0) {
232 if ((devinfo2.type == AUDIO_MIXER_VALUE) && (devinfo2.mixer_class == oclass_idx) && (strncmp(devinfo2.label.name, AudioNmaster, MAX_AUDIO_DEV_LEN) == 0)) {
233 master_idx = devinfo2.index;
234 master_next = devinfo2.next;
237 if ((devinfo2.type == AUDIO_MIXER_ENUM) && (devinfo2.mixer_class == oclass_idx) && (strncmp(devinfo2.label.name, AudioNmute, MAX_AUDIO_DEV_LEN) == 0))
238 if (master_next == devinfo2.index)
239 master_mute_idx = devinfo2.index;
241 if (master_next != AUDIO_MIXER_LAST)
242 master_next = devinfo2.next;
246 if (master_idx == -1)
249 devinfo.index = master_idx;
250 if (ioctl(mixfd, AUDIO_MIXER_DEVINFO, &devinfo) == -1)
253 vinfo.dev = master_idx;
254 vinfo.type = AUDIO_MIXER_VALUE;
255 vinfo.un.value.num_channels = devinfo.un.v.num_channels;
256 if (ioctl(mixfd, AUDIO_MIXER_READ, &vinfo) == -1)
259 if (AUDIO_MAX_GAIN != 100) {
260 float avgf = ((float)vinfo.un.value.level[AUDIO_MIXER_LEVEL_MONO] / AUDIO_MAX_GAIN) * 100;
262 vol = (avgf - vol < 0.5 ? vol : (vol + 1));
264 vol = (int)vinfo.un.value.level[AUDIO_MIXER_LEVEL_MONO];
267 vinfo.dev = master_mute_idx;
268 vinfo.type = AUDIO_MIXER_ENUM;
269 if (ioctl(mixfd, AUDIO_MIXER_READ, &vinfo) == -1)
272 if (master_mute_idx != -1 && vinfo.un.ord) {
273 START_COLOR("color_degraded");
279 if (ioctl(mixfd, SOUND_MIXER_READ_DEVMASK, &devmask) == -1) {
280 warn("OSS: Cannot read mixer information");
283 if (ioctl(mixfd, MIXER_READ(0), &vol) == -1) {
284 warn("OSS: Cannot read mixer information");
288 if (((vol & 0x7f) == 0) && (((vol >> 8) & 0x7f) == 0)) {
289 START_COLOR("color_degraded");
294 outwalk = apply_volume_format(fmt, outwalk, vol & 0x7f);
302 OUTPUT_FULL_TEXT(buffer);