1 // vim:ts=4:sw=4:expandtab
7 #include <yajl/yajl_gen.h>
8 #include <yajl/yajl_version.h>
11 #include <alsa/asoundlib.h>
15 #if defined(__FreeBSD__) || defined(__DragonFly__)
18 #include <sys/soundcard.h>
24 #include <sys/audioio.h>
25 #include <sys/ioctl.h>
31 static char *apply_volume_format(const char *fmt, char *outwalk, int ivolume) {
32 const char *walk = fmt;
34 for (; *walk != '\0'; walk++) {
39 if (BEGINS_WITH(walk + 1, "%")) {
40 outwalk += sprintf(outwalk, "%s", pct_mark);
43 if (BEGINS_WITH(walk + 1, "volume")) {
44 outwalk += sprintf(outwalk, "%d%s", ivolume, pct_mark);
45 walk += strlen("volume");
51 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) {
52 char *outwalk = buffer;
55 /* Printing volume works with ALSA and PulseAudio at the moment */
56 if (output_format == O_I3BAR) {
58 asprintf(&instance, "%s.%s.%d", device, mixer, mixer_idx);
64 /* Try PulseAudio first */
66 /* If the device name has the format "pulse[:N]" where N is the
67 * index of the PulseAudio sink then force PulseAudio, optionally
68 * overriding the default sink */
69 if (!strncasecmp(device, "pulse", strlen("pulse"))) {
70 uint32_t sink_idx = device[5] == ':' ? (uint32_t)atoi(device + 6)
72 int cvolume = pulse_initialize() ? volume_pulseaudio(sink_idx) : 0;
73 int ivolume = DECOMPOSE_VOLUME(cvolume);
74 bool muted = DECOMPOSE_MUTED(cvolume);
76 START_COLOR("color_degraded");
79 /* negative result means error, stick to 0 */
82 outwalk = apply_volume_format(muted ? fmt_muted : fmt,
86 } else if (!strcasecmp(device, "default") && pulse_initialize()) {
87 /* no device specified or "default" set */
88 int cvolume = volume_pulseaudio(DEFAULT_SINK_INDEX);
89 int ivolume = DECOMPOSE_VOLUME(cvolume);
90 bool muted = DECOMPOSE_MUTED(cvolume);
93 START_COLOR("color_degraded");
96 outwalk = apply_volume_format(muted ? fmt_muted : fmt,
101 /* negative result means error, fail PulseAudio attempt */
103 /* If some other device was specified or PulseAudio is not detected,
104 * proceed to ALSA / OSS */
110 snd_mixer_selem_id_t *sid;
111 snd_mixer_elem_t *elem;
115 if ((err = snd_mixer_open(&m, 0)) < 0) {
116 fprintf(stderr, "i3status: ALSA: Cannot open mixer: %s\n", snd_strerror(err));
120 /* Attach this mixer handle to the given device */
121 if ((err = snd_mixer_attach(m, device)) < 0) {
122 fprintf(stderr, "i3status: ALSA: Cannot attach mixer to device: %s\n", snd_strerror(err));
127 /* Register this mixer */
128 if ((err = snd_mixer_selem_register(m, NULL, NULL)) < 0) {
129 fprintf(stderr, "i3status: ALSA: snd_mixer_selem_register: %s\n", snd_strerror(err));
134 if ((err = snd_mixer_load(m)) < 0) {
135 fprintf(stderr, "i3status: ALSA: snd_mixer_load: %s\n", snd_strerror(err));
140 snd_mixer_selem_id_malloc(&sid);
146 /* Find the given mixer */
147 snd_mixer_selem_id_set_index(sid, mixer_idx);
148 snd_mixer_selem_id_set_name(sid, mixer);
149 if (!(elem = snd_mixer_find_selem(m, sid))) {
150 fprintf(stderr, "i3status: ALSA: Cannot find mixer %s (index %i)\n",
151 snd_mixer_selem_id_get_name(sid), snd_mixer_selem_id_get_index(sid));
153 snd_mixer_selem_id_free(sid);
157 /* Get the volume range to convert the volume later */
158 snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
160 snd_mixer_handle_events(m);
161 snd_mixer_selem_get_playback_volume(elem, 0, &val);
163 float avgf = ((float)val / max) * 100;
165 avg = (avgf - avg < 0.5 ? avg : (avg + 1));
170 if (snd_mixer_selem_has_playback_switch(elem)) {
171 if ((err = snd_mixer_selem_get_playback_switch(elem, 0, &pbval)) < 0)
172 fprintf(stderr, "i3status: ALSA: playback_switch: %s\n", snd_strerror(err));
174 START_COLOR("color_degraded");
180 snd_mixer_selem_id_free(sid);
182 outwalk = apply_volume_format(fmt, outwalk, avg);
185 #if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
187 char defaultmixer[] = "/dev/mixer";
188 int mixfd, vol, devmask = 0;
192 asprintf(&mixerpath, "/dev/mixer%d", mixer_idx);
194 mixerpath = defaultmixer;
196 if ((mixfd = open(mixerpath, O_RDWR)) < 0) {
197 #if defined(__OpenBSD__)
198 warn("audioio: Cannot open mixer");
200 warn("OSS: Cannot open mixer");
208 #if defined(__OpenBSD__)
209 int oclass_idx = -1, master_idx = -1, master_mute_idx = -1;
210 mixer_devinfo_t devinfo, devinfo2;
214 while (ioctl(mixfd, AUDIO_MIXER_DEVINFO, &devinfo) >= 0) {
215 if (devinfo.type != AUDIO_MIXER_CLASS) {
219 if (strncmp(devinfo.label.name, AudioCoutputs, MAX_AUDIO_DEV_LEN) == 0)
220 oclass_idx = devinfo.index;
226 while (ioctl(mixfd, AUDIO_MIXER_DEVINFO, &devinfo2) >= 0) {
227 if ((devinfo2.type == AUDIO_MIXER_VALUE) && (devinfo2.mixer_class == oclass_idx) && (strncmp(devinfo2.label.name, AudioNmaster, MAX_AUDIO_DEV_LEN) == 0))
228 master_idx = devinfo2.index;
230 if ((devinfo2.type == AUDIO_MIXER_ENUM) && (devinfo2.mixer_class == oclass_idx) && (strncmp(devinfo2.label.name, AudioNmute, MAX_AUDIO_DEV_LEN) == 0))
231 master_mute_idx = devinfo2.index;
236 if (master_idx == -1)
239 devinfo.index = master_idx;
240 if (ioctl(mixfd, AUDIO_MIXER_DEVINFO, &devinfo) == -1)
243 vinfo.dev = master_idx;
244 vinfo.type = AUDIO_MIXER_VALUE;
245 if (ioctl(mixfd, AUDIO_MIXER_READ, &vinfo) == -1)
248 if (AUDIO_MAX_GAIN != 100) {
249 float avgf = ((float)vinfo.un.value.level[AUDIO_MIXER_LEVEL_MONO] / AUDIO_MAX_GAIN) * 100;
251 vol = (avgf - vol < 0.5 ? vol : (vol + 1));
253 vol = (int)vinfo.un.value.level[AUDIO_MIXER_LEVEL_MONO];
256 vinfo.dev = master_mute_idx;
257 vinfo.type = AUDIO_MIXER_ENUM;
258 if (ioctl(mixfd, AUDIO_MIXER_READ, &vinfo) == -1)
261 if (master_mute_idx != -1 && vinfo.un.ord) {
262 START_COLOR("color_degraded");
268 if (ioctl(mixfd, SOUND_MIXER_READ_DEVMASK, &devmask) == -1) {
269 warn("OSS: Cannot read mixer information");
272 if (ioctl(mixfd, MIXER_READ(0), &vol) == -1) {
273 warn("OSS: Cannot read mixer information");
277 if (((vol & 0x7f) == 0) && (((vol >> 8) & 0x7f) == 0)) {
278 START_COLOR("color_degraded");
283 outwalk = apply_volume_format(fmt, outwalk, vol & 0x7f);
291 OUTPUT_FULL_TEXT(buffer);