From 5b416d4ac00caf6028416999d3cef3b997d33f3b Mon Sep 17 00:00:00 2001 From: Carlin Bingham Date: Tue, 13 Feb 2018 02:12:04 +1300 Subject: [PATCH] OpenBSD: fix volume display on some hardware On some hardware the AUDIO_MIXER_READ ioctl requires the current number of channels to be set, and the mute device found needs to be checked if it belongs to the master output device. --- src/print_volume.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/src/print_volume.c b/src/print_volume.c index 51e84f3..be6a1d7 100644 --- a/src/print_volume.c +++ b/src/print_volume.c @@ -211,6 +211,7 @@ void print_volume(yajl_gen json_gen, char *buffer, const char *fmt, const char * #if defined(__OpenBSD__) int oclass_idx = -1, master_idx = -1, master_mute_idx = -1; + int master_next = AUDIO_MIXER_LAST; mixer_devinfo_t devinfo, devinfo2; mixer_ctrl_t vinfo; @@ -228,12 +229,17 @@ void print_volume(yajl_gen json_gen, char *buffer, const char *fmt, const char * devinfo2.index = 0; while (ioctl(mixfd, AUDIO_MIXER_DEVINFO, &devinfo2) >= 0) { - if ((devinfo2.type == AUDIO_MIXER_VALUE) && (devinfo2.mixer_class == oclass_idx) && (strncmp(devinfo2.label.name, AudioNmaster, MAX_AUDIO_DEV_LEN) == 0)) + if ((devinfo2.type == AUDIO_MIXER_VALUE) && (devinfo2.mixer_class == oclass_idx) && (strncmp(devinfo2.label.name, AudioNmaster, MAX_AUDIO_DEV_LEN) == 0)) { master_idx = devinfo2.index; + master_next = devinfo2.next; + } if ((devinfo2.type == AUDIO_MIXER_ENUM) && (devinfo2.mixer_class == oclass_idx) && (strncmp(devinfo2.label.name, AudioNmute, MAX_AUDIO_DEV_LEN) == 0)) - master_mute_idx = devinfo2.index; + if (master_next == devinfo2.index) + master_mute_idx = devinfo2.index; + if (master_next != AUDIO_MIXER_LAST) + master_next = devinfo2.next; devinfo2.index++; } @@ -246,6 +252,7 @@ void print_volume(yajl_gen json_gen, char *buffer, const char *fmt, const char * vinfo.dev = master_idx; vinfo.type = AUDIO_MIXER_VALUE; + vinfo.un.value.num_channels = devinfo.un.v.num_channels; if (ioctl(mixfd, AUDIO_MIXER_READ, &vinfo) == -1) goto out; -- 2.39.5