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using ComLight;
using System.Runtime.InteropServices;
using Whisper.Internal;
namespace Whisper
{
/// <summary>Exposes a small subset of MS Media Foundation framework.</summary>
/// <remarks>That framework is a part of Windows OS, since Vista.</remarks>
/// <seealso href="https://learn.microsoft.com/en-us/windows/win32/medfound/microsoft-media-foundation-sdk" />
[ComInterface( "fb9763a5-d77d-4b6e-aff8-f494813cebd8", eMarshalDirection.ToManaged ), CustomConventions( typeof( NativeLogger ) )]
public interface iMediaFoundation: IDisposable
{
/// <summary>Decode complete audio file into a new memory buffer.</summary>
/// <returns>
/// The method asks MF to resample and convert audio into the suitable type for the Whisper model.<br/>
/// If the path is a video file, the method will decode the first audio track.
/// </returns>
[RetValIndex( 2 )]
iAudioBuffer loadAudioFile( [MarshalAs( UnmanagedType.LPWStr )] string path, [MarshalAs( UnmanagedType.U1 )] bool stereo = false );
/// <summary>Create a reader to stream the audio file from disk</summary>
/// <returns>
/// The method returns an object which can be used to decode the audio file incrementally.<br/>
/// For long audio files, this saves both memory (no need for large uncompressed PCM buffer), and time (decode and transcribe run concurrently on different CPU threads).<br/>
/// If the path is a video file, the implementation will use the first audio track.
/// </returns>
[RetValIndex( 2 )]
iAudioReader openAudioFile( [MarshalAs( UnmanagedType.LPWStr )] string path, [MarshalAs( UnmanagedType.U1 )] bool stereo = false );
/// <summary>List capture devices</summary>
void listCaptureDevices( [MarshalAs( UnmanagedType.FunctionPtr )] pfnFoundCaptureDevices pfn, IntPtr pv );
/// <summary>Open audio capture device</summary>
[RetValIndex( 2 )]
iAudioCapture openCaptureDevice( [MarshalAs( UnmanagedType.LPWStr )] string endpoint, [In] ref sCaptureParams captureParams );
}
}
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