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//
// Copyright (c) 2019-2021 Ryujinx
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
//
using System;
using System.Diagnostics;
namespace Ryujinx.Audio.Integration
{
/// <summary>
/// Represent an hardware device used in <see cref="Renderer.Dsp.Command.DeviceSinkCommand"/>
/// </summary>
public interface IHardwareDevice : IDisposable
{
/// <summary>
/// Sets the volume level for this device.
/// </summary>
/// <param name="volume">The volume level to set.</param>
void SetVolume(float volume);
/// <summary>
/// Gets the volume level for this device.
/// </summary>
/// <returns>The volume level of this device.</returns>
float GetVolume();
/// <summary>
/// Get the supported sample rate of this device.
/// </summary>
/// <returns>The supported sample rate of this device.</returns>
uint GetSampleRate();
/// <summary>
/// Get the channel count supported by this device.
/// </summary>
/// <returns>The channel count supported by this device.</returns>
uint GetChannelCount();
/// <summary>
/// Appends new PCM16 samples to the device.
/// </summary>
/// <param name="data">The new PCM16 samples.</param>
/// <param name="channelCount">The number of channels.</param>
void AppendBuffer(ReadOnlySpan<short> data, uint channelCount);
/// <summary>
/// Check if the audio renderer needs to perform downmixing.
/// </summary>
/// <returns>True if downmixing is needed.</returns>
public bool NeedDownmixing()
{
uint channelCount = GetChannelCount();
Debug.Assert(channelCount > 0 && channelCount <= Constants.ChannelCountMax);
return channelCount != Constants.ChannelCountMax;
}
}
}
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