You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
76 lines
2.0 KiB
76 lines
2.0 KiB
// SPDX-License-Identifier: AGPL-3.0-only
|
|
/**
|
|
* Digital Voice Modem - Desktop Dispatch Console
|
|
* AGPLv3 Open Source. Use is subject to license terms.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* @package DVM / Desktop Dispatch Console
|
|
* @license AGPLv3 License (https://opensource.org/licenses/AGPL-3.0)
|
|
*
|
|
* Copyright (C) 2025 Caleb, K4PHP
|
|
*
|
|
*/
|
|
|
|
using NAudio.Wave;
|
|
|
|
namespace dvmconsole
|
|
{
|
|
/// <summary>
|
|
///
|
|
/// </summary>
|
|
public class GainSampleProvider : ISampleProvider
|
|
{
|
|
private readonly ISampleProvider source;
|
|
private float gain = 1.0f;
|
|
|
|
/*
|
|
** Properties
|
|
*/
|
|
|
|
/// <summary>
|
|
///
|
|
/// </summary>
|
|
public WaveFormat WaveFormat { get; }
|
|
|
|
/// <summary>
|
|
///
|
|
/// </summary>
|
|
public float Gain
|
|
{
|
|
get => gain;
|
|
set => gain = Math.Max(0, value);
|
|
}
|
|
|
|
/*
|
|
** Methods
|
|
*/
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="GainSampleProvider"/> class.
|
|
/// </summary>
|
|
/// <param name="source"></param>
|
|
/// <exception cref="ArgumentNullException"></exception>
|
|
public GainSampleProvider(ISampleProvider source)
|
|
{
|
|
this.source = source ?? throw new ArgumentNullException(nameof(source));
|
|
WaveFormat = source.WaveFormat;
|
|
}
|
|
|
|
/// <summary>
|
|
///
|
|
/// </summary>
|
|
/// <param name="buffer"></param>
|
|
/// <param name="offset"></param>
|
|
/// <param name="count"></param>
|
|
/// <returns></returns>
|
|
public int Read(float[] buffer, int offset, int count)
|
|
{
|
|
int samplesRead = source.Read(buffer, offset, count);
|
|
for (int i = 0; i < samplesRead; i++)
|
|
buffer[offset + i] *= gain;
|
|
|
|
return samplesRead;
|
|
}
|
|
} // public class GainSampleProvider : ISampleProvider
|
|
} // namespace dvmconsole
|