< AVClass for logging
< allocated channel count
< number of samples the buffer can hold
< realloc is allowed
< data buffer
< allocated buffer size
< channel count
< data plane pointers
< sample format is planar
< name for debug logging
< current number of samples
< number of data planes
< minimum data pointer alignment
< data is read-only
< sample format
< bytes per sample
< allocated samples alignment
< sample byte offset within a plane
Audio buffer used for intermediate storage between conversion phases.