demo_device_id.rs

//! Example demonstrating the different ways to open an RTL-SDR device
//! using the new DeviceId enum API.

use rtl_sdr_rs::{DeviceId, RtlSdr};

fn main() {
    println!("RTL-SDR DeviceId Demo");
    println!("================");

    // Method 1: Using DeviceId::Index directly
    println!("1. Opening device using DeviceId::Index(0):");
    match RtlSdr::open(DeviceId::Index(0)) {
        Ok(_sdr) => println!("   ✓ Successfully opened device with index 0"),
        Err(e) => println!("   ✗ Failed to open device: {}", e),
    }

    // Method 2: Using convenience function for index
    println!("2. Opening device using convenience function open_with_index(0):");
    match RtlSdr::open_with_index(0) {
        Ok(_sdr) => println!("   ✓ Successfully opened device with index 0"),
        Err(e) => println!("   ✗ Failed to open device: {}", e),
    }

    // Method 3: Using file descriptor (will fail unless you have a real fd)
    println!("3. Opening device using DeviceId::Fd(42) - this will likely fail:");
    match RtlSdr::open(DeviceId::Fd(42)) {
        Ok(_sdr) => println!("   ✓ Successfully opened device with fd 42"),
        Err(e) => println!("   ✗ Failed to open device: {}", e),
    }

    // Method 4: Using convenience function for fd
    println!("4. Opening device using convenience function open_with_fd(42):");
    match RtlSdr::open_with_fd(42) {
        Ok(_sdr) => println!("   ✓ Successfully opened device with fd 42"),
        Err(e) => println!("   ✗ Failed to open device: {}", e),
    }

    println!("\nDemo complete! The new API supports both index and file descriptor based opening.");
}