inc->analog_datafeed_buf_size /= sample_size;
inc->analog_datafeed_buf_size /= inc->analog_channels;
sample_count = inc->analog_channels * inc->analog_datafeed_buf_size;
inc->analog_datafeed_buf_size /= sample_size;
inc->analog_datafeed_buf_size /= inc->analog_channels;
sample_count = inc->analog_channels * inc->analog_datafeed_buf_size;