diff options
| author | Daniel Kahn Gillmor <dkg@fifthhorseman.net> | 2009-04-28 09:15:48 +0200 |
|---|---|---|
| committer | Max Kellermann <max@duempel.org> | 2009-04-28 09:15:48 +0200 |
| commit | 05dfdfdb398146f3427be154bfe599fac61ed025 (patch) | |
| tree | d0f115cd57594d2f0c6a29119e267f0d14b542a5 | |
| parent | 70d322b296247cd6d09de894f6d1cb06f5cf0d11 (diff) | |
alsa_mixer: add mixer_index option
This allows you to select controls with duplicate names.
| -rw-r--r-- | NEWS | 2 | ||||
| -rw-r--r-- | doc/mpd.conf.5 | 6 | ||||
| -rw-r--r-- | doc/mpdconf.example | 1 | ||||
| -rw-r--r-- | src/mixer/alsa_mixer.c | 9 |
4 files changed, 16 insertions, 2 deletions
@@ -50,6 +50,8 @@ ver 0.15 (200?/??/??) * mixers: - rewritten mixer code to support multiple mixers - new pulseaudio mixer + - alsa: new mixer_index option supports choosing between multiple + identically-named controls on a device. * Add audio archive extraction support: - bzip2 - iso9660 diff --git a/doc/mpd.conf.5 b/doc/mpd.conf.5 index f6ac80f63..f5f4f8227 100644 --- a/doc/mpd.conf.5 +++ b/doc/mpd.conf.5 @@ -293,6 +293,12 @@ This specifies which mixer control to use (sometimes referred to as the "device"). Examples of mixer controls are PCM, Line1, Master, etc. An example for OSS is "Pcm", and an example for alsa is "PCM". .TP +.B mixer_index <mixer index> +A number identifying the index of the named mixer control. This is +probably only useful if your alsa device has more than one +identically\-named mixer control. The default is "0". (Use "amixer +scontrols" to see the list of controls with their indexes) +.TP .B use_mmap <yes or no> Setting this allows you to use memory-mapped I/O. Certain hardware setups may benefit from this, but most do not. Most users do not need to set this. The diff --git a/doc/mpdconf.example b/doc/mpdconf.example index abaef1c1c..919326236 100644 --- a/doc/mpdconf.example +++ b/doc/mpdconf.example @@ -181,6 +181,7 @@ input { # format "44100:16:2" # optional # mixer_device "default" # optional # mixer_control "PCM" # optional +# mixer_index "0" # optional #} # # An example of an OSS output: diff --git a/src/mixer/alsa_mixer.c b/src/mixer/alsa_mixer.c index fb0834338..52f30b6f4 100644 --- a/src/mixer/alsa_mixer.c +++ b/src/mixer/alsa_mixer.c @@ -25,6 +25,7 @@ #define VOLUME_MIXER_ALSA_DEFAULT "default" #define VOLUME_MIXER_ALSA_CONTROL_DEFAULT "PCM" +#define VOLUME_MIXER_ALSA_INDEX_DEFAULT 0 struct alsa_mixer { /** the base mixer class */ @@ -32,6 +33,7 @@ struct alsa_mixer { const char *device; const char *control; + unsigned int index; snd_mixer_t *handle; snd_mixer_elem_t *elem; @@ -51,6 +53,8 @@ alsa_mixer_init(const struct config_param *param) VOLUME_MIXER_ALSA_DEFAULT); am->control = config_get_block_string(param, "mixer_control", VOLUME_MIXER_ALSA_CONTROL_DEFAULT); + am->index = config_get_block_unsigned(param, "mixer_index", + VOLUME_MIXER_ALSA_INDEX_DEFAULT); return &am->base; } @@ -117,8 +121,9 @@ alsa_mixer_open(struct mixer *data) while (elem) { if (snd_mixer_elem_get_type(elem) == SND_MIXER_ELEM_SIMPLE) { - if (strcasecmp(am->control, - snd_mixer_selem_get_name(elem)) == 0) { + if ((strcasecmp(am->control, + snd_mixer_selem_get_name(elem)) == 0) && + (am->index == snd_mixer_selem_get_index(elem))) { break; } } |