Function flipper0::ffi::furi_stream_buffer_bytes_available

pub unsafe extern "C" fn furi_stream_buffer_bytes_available(
    stream_buffer: *mut c_void
) -> usize

@brief Queries a stream buffer to see how much data it contains, which is equal to the number of bytes that can be read from the stream buffer before the stream buffer would be empty.

@param stream_buffer The stream buffer instance. @return The number of bytes that can be read from the stream buffer before the stream buffer would be empty.