use raw volume api if db range is insufficent
Adrian Smith
9 years ago
| 199 | 199 | snd_mixer_selem_set_playback_switch_all(elem, 1); // unmute |
| 200 | 200 | } |
| 201 | 201 | |
| 202 | if ((err = snd_mixer_selem_get_playback_dB_range(elem, &min, &max)) < 0) { | |
| 203 | // unable to get db range - set using raw values | |
| 202 | if ((err = snd_mixer_selem_get_playback_dB_range(elem, &min, &max)) < 0 || max - min < 1000) { | |
| 203 | // unable to get db range or range is less than 10dB - ignore and set using raw values | |
| 204 | 204 | if ((err = snd_mixer_selem_get_playback_volume_range(elem, &min, &max)) < 0) { |
| 205 | LOG_ERROR("unable to get volume raw", min, max); | |
| 205 | LOG_ERROR("unable to get volume raw"); | |
| 206 | 206 | } else { |
| 207 | long lraw = (MINVOL_DB + floor(ldB)) / MINVOL_DB * max; | |
| 208 | long rraw = (MINVOL_DB + floor(rdB)) / MINVOL_DB * max; | |
| 209 | LOG_DEBUG("setting vol raw [%ld-%ld]", min, max); | |
| 207 | long lraw = (ldB > -MINVOL_DB ? MINVOL_DB + floor(ldB) : 0) / MINVOL_DB * max; | |
| 208 | long rraw = (rdB > -MINVOL_DB ? MINVOL_DB + floor(rdB) : 0) / MINVOL_DB * max; | |
| 209 | LOG_DEBUG("setting vol raw [%ld..%ld]", min, max); | |
| 210 | 210 | if ((err = snd_mixer_selem_set_playback_volume(elem, SND_MIXER_SCHN_FRONT_LEFT, lraw)) < 0) { |
| 211 | 211 | LOG_ERROR("error setting left volume: %s", snd_strerror(err)); |
| 212 | 212 | } |
| 216 | 216 | } |
| 217 | 217 | } else { |
| 218 | 218 | // set db directly |
| 219 | LOG_DEBUG("setting vol dB"); | |
| 219 | LOG_DEBUG("setting vol dB [%ld..%ld]", min, max); | |
| 220 | 220 | if ((err = snd_mixer_selem_set_playback_dB(elem, SND_MIXER_SCHN_FRONT_LEFT, 100 * ldB, 1)) < 0) { |
| 221 | 221 | LOG_ERROR("error setting left volume: %s", snd_strerror(err)); |
| 222 | 222 | } |