78 lines
1.9 KiB
Markdown
78 lines
1.9 KiB
Markdown
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River configuration file {#audio_river_config_file}
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========================
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@tableofcontents
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Objectifs: {#audio_river_config_file_objectif}
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==========
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- Understand the architecture of the configuration file.
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- all that can be done with it.
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Basis: {#audio_river_config_file_bases}
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======
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The river configuration file is a json file. We use @ref ejson_mainpage_what to parse it then we have some writing facilities.
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River provide a list a harware interface and virtual interface.
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The hardware interface are provided by @ref audio_orchestra_mainpage_what then we will plug on every platform.
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The file is simply architecture around a list of object:
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```{.json}
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{
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"speaker":{
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},
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"microphone":{
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},
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"mixed-in-out":{
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},
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}
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```
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With this config we declare 3 interfaces : speaker, microphone and mixed-in-out.
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Harware configuration: {#audio_river_config_file_hw_config}
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======================
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In every interface we need to define some Element:
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- "io" : Can be input/output/... depending of virtual interface...
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- "map-on": An object to configure airtaudio interface.
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- "frequency": 0 to automatic select one. Or the frequency to open harware device
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- "channel-map": List of all channel in the stream:
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* "front-left"
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* "front-center"
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* "front-right"
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* "rear-left"
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* "rear-center"
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* "rear-right"
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* "surround-left",
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* "surround-right",
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* "sub-woofer",
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* "lfe"
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- "type": Fomat to open the stream:
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* "auto": Detect the best type
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* "int8",
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* "int8-on-int16",
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* "int16",
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* "int16-on-int32",
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* "int24",
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* "int32",
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* "int32-on-int64",
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* "int64",
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* "float",
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* "double"
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- "nb-chunk": Number of chunk to open the stream.
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