Shadowtrance
20 lines
1017 B
Markdown
20 lines
1017 B
Markdown
# Audio codec module
|
|
|
|
Defines `AUDIO_CODEC_TYPE` and the codec-agnostic `AudioCodecApi` (open/close/
|
|
read/write/volume/mute/native-rate/native-channels/capabilities) that every
|
|
audio codec driver in this repo implements (ES8311, ES8388, ES7210, AW88298,
|
|
the dummy I2S amps, the PDM mic). This is intentionally low-level: no
|
|
resampling or mixing, one codec device per chip. Most app code should go
|
|
through `audio_stream` (see `Drivers/audio-stream-module`) instead of talking
|
|
to a codec device directly.
|
|
|
|
Also provides `audio_codec_adapters.h`: glue that lets a codec driver build an
|
|
`esp_codec_dev` control/data/GPIO interface (`audio_codec_ctrl_if_t` /
|
|
`audio_codec_data_if_t` / `audio_codec_gpio_if_t`) directly from Tactility's
|
|
own I2C controller, I2S controller, and GPIO pin devices, so a codec driver
|
|
only ever needs `device_get_parent()`/`device_find_by_name()` plus a handful
|
|
of devicetree properties -- it never touches the platform I2C/I2S/GPIO APIs
|
|
directly.
|
|
|
|
License: [Apache v2.0](LICENSE-Apache-2.0.md)
|