diff options
| -rw-r--r-- | README.md | 8 |
1 files changed, 5 insertions, 3 deletions
@@ -72,6 +72,8 @@ sudo modprobe snd-aloop * This section is where you put controls which are alsa control calls. * If a control is not available, it will be registered in alsa using '4a-alsa-core'. * These controls will be available as verb for your hal. + * The value passed to these verbs should be in percentage, the hal will do the conversion to the correct alsa value. + To be recognize by the hal, the value should ba associated to the key `val` and should be an integer. * In `halmixer` section (what it is passed to the mixer): * The `uid` field will be the name of the mixer corresponding to your hal. * The `mixerapi` field should contain the name of the api to call for reaching the mixer @@ -81,7 +83,7 @@ sudo modprobe snd-aloop * In `ramps` section: * Define the ramp that you can use in your mixer (ramps in example files can be used). * The `uid` field is where you specify the name of the ramp. - * The ramp will set the current volume to the targeted volume step by step : + * The ramp will set the current volume to the targeted volume step by step: * The `delay` field is the delay between two volume modification. * The `up` field is the volume increase in one step (when increasing volume is requested). * The `down` field is the volume decrease in one step (when decreasing volume is requested). @@ -100,7 +102,7 @@ sudo modprobe snd-aloop * A `uid` field that will be used by the mixer to identify the capture. * The `params` field is an optional field where you can specify some parameters for your capture (such as rate). - * The `sink` field is where you describe your capture : + * The `sink` field is where you describe your capture: * The `controls` field must contain the alsa control labels that the mixer will use to set/mute volume on your audio device. * The `channels` field must contain an object that will link an `uid` to @@ -187,7 +189,7 @@ Use the previously obtain card id to play audio in the selected stream: #### During playing, try the stream commands to change/ramp volume -Now you can use your hal api to send commands to mixer. This way, you can change/ramp volume : +Now you can use your hal api to send commands to mixer. This way, you can change/ramp volume: `4a-hal-*halapiname* *selected_stream* { "volume" : "+10" }` |