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config RT_USING_AUDIO
bool "Using Audio device drivers"
default n
help
Enable the RT-Thread audio framework so playback/record devices may be
registered, DMA pipes allocated, and ALSA-like controls exposed via
`rt_audio_*` APIs. Choose this whenever your board has I2S/TDM codecs or
PDM microphones; disable it on MCU builds that do not process audio data.
if RT_USING_AUDIO
config RT_AUDIO_REPLAY_MP_BLOCK_SIZE
int "Replay memory pool block size"
default 4096
help
Size in bytes for each block inside the replay memory pool used by
`dev_audio.c` to stage PCM data before pushing it to DMA. Larger
values increase latency but reduce IRQ pressure; shrink it when
RAM is tight and the codec tolerates smaller bursts.
config RT_AUDIO_REPLAY_MP_BLOCK_COUNT
int "Replay memory pool block count"
default 2
help
Number of replay memory pool blocks. Raising this allows more
outstanding audio buffers (useful for long DMA transfers) but
consumes additional RAM = `BLOCK_SIZE * COUNT`.
config RT_AUDIO_RECORD_PIPE_SIZE
int "Record pipe size"
default 2048
help
Size of the ring buffer used to capture samples before user-space
reads them. Increase this to prevent overflow when the recorder
callback runs slower than the DMA completion interrupt; reduce it
on memory constrained platforms.
endif
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