Ryujinx/Ryujinx.Audio.Backends.SoundIo/Native/libsoundio/SoundIOInStream.cs
Mary f556c80d02
Haydn: Part 1 (#2007)
* Haydn: Part 1

Based on my reverse of audio 11.0.0.

As always, core implementation under LGPLv3 for the same reasons as for Amadeus.

This place the bases of a more flexible audio system while making audout & audin accurate.

This have the following improvements:
- Complete reimplementation of audout and audin.
- Audin currently only have a dummy backend.
- Dramatically reduce CPU usage by up to 50% in common cases (SoundIO and OpenAL).
- Audio Renderer now can output to 5.1 devices when supported.
- Audio Renderer init its backend on demand instead of keeping two up all the time.
- All backends implementation are now in their own project.
- Ryujinx.Audio.Renderer was renamed Ryujinx.Audio and was refactored because of this.

As a note, games having issues with OpenAL haven't improved and will not
because of OpenAL design (stopping when buffers finish playing causing
possible audio "pops" when buffers are very small).

* Update for latest hexkyz's edits on Switchbrew

* audren: Rollback channel configuration changes

* Address gdkchan's comments

* Fix typo in OpenAL backend driver

* Address last comments

* Fix a nit

* Address gdkchan's comments
2021-02-26 01:11:56 +01:00

293 lines
9.4 KiB
C#

using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
namespace SoundIOSharp
{
public class SoundIOInStream : IDisposable
{
internal SoundIOInStream(Pointer<SoundIoInStream> handle)
{
this.handle = handle;
}
Pointer<SoundIoInStream> handle;
public void Dispose()
{
Natives.soundio_instream_destroy(handle);
}
// Equality (based on handle)
public override bool Equals(object other)
{
var d = other as SoundIOInStream;
return d != null && (this.handle == d.handle);
}
public override int GetHashCode()
{
return (int)(IntPtr)handle;
}
public static bool operator == (SoundIOInStream obj1, SoundIOInStream obj2)
{
return obj1 is null ? obj2 is null : obj1.Equals(obj2);
}
public static bool operator != (SoundIOInStream obj1, SoundIOInStream obj2)
{
return obj1 is null ? obj2 is object : !obj1.Equals(obj2);
}
// fields
public SoundIODevice Device
{
get { return new SoundIODevice(Marshal.ReadIntPtr(handle, device_offset)); }
}
static readonly int device_offset = (int)Marshal.OffsetOf<SoundIoInStream>("device");
public SoundIOFormat Format
{
get { return (SoundIOFormat)Marshal.ReadInt32(handle, format_offset); }
set { Marshal.WriteInt32(handle, format_offset, (int) value); }
}
static readonly int format_offset = (int)Marshal.OffsetOf<SoundIoInStream>("format");
public int SampleRate
{
get { return Marshal.ReadInt32(handle, sample_rate_offset); }
set { Marshal.WriteInt32(handle, sample_rate_offset, value); }
}
static readonly int sample_rate_offset = (int)Marshal.OffsetOf<SoundIoInStream>("sample_rate");
public SoundIOChannelLayout Layout
{
get { return new SoundIOChannelLayout ((IntPtr) handle + layout_offset); }
set
{
unsafe
{
Buffer.MemoryCopy((void*)((IntPtr)handle + layout_offset), (void*)value.Handle, Marshal.SizeOf<SoundIoChannelLayout>(), Marshal.SizeOf<SoundIoChannelLayout>());
}
}
}
static readonly int layout_offset = (int)Marshal.OffsetOf<SoundIoInStream>("layout");
public double SoftwareLatency
{
get { return MarshalEx.ReadDouble(handle, software_latency_offset); }
set { MarshalEx.WriteDouble(handle, software_latency_offset, value); }
}
static readonly int software_latency_offset = (int)Marshal.OffsetOf<SoundIoInStream>("software_latency");
// error_callback
public Action ErrorCallback
{
get { return error_callback; }
set
{
error_callback = value;
error_callback_native = _ => error_callback();
var ptr = Marshal.GetFunctionPointerForDelegate(error_callback_native);
Marshal.WriteIntPtr(handle, error_callback_offset, ptr);
}
}
static readonly int error_callback_offset = (int)Marshal.OffsetOf<SoundIoInStream>("error_callback");
Action error_callback;
delegate void error_callback_delegate(IntPtr handle);
error_callback_delegate error_callback_native;
// read_callback
public Action<int,int> ReadCallback
{
get { return read_callback; }
set
{
read_callback = value;
read_callback_native = (_, minFrameCount, maxFrameCount) => read_callback(minFrameCount, maxFrameCount);
var ptr = Marshal.GetFunctionPointerForDelegate(read_callback_native);
Marshal.WriteIntPtr(handle, read_callback_offset, ptr);
}
}
static readonly int read_callback_offset = (int)Marshal.OffsetOf<SoundIoInStream>("read_callback");
Action<int, int> read_callback;
delegate void read_callback_delegate(IntPtr handle, int min, int max);
read_callback_delegate read_callback_native;
// overflow_callback
public Action OverflowCallback
{
get { return overflow_callback; }
set
{
overflow_callback = value;
overflow_callback_native = _ => overflow_callback();
var ptr = Marshal.GetFunctionPointerForDelegate(overflow_callback_native);
Marshal.WriteIntPtr(handle, overflow_callback_offset, ptr);
}
}
static readonly int overflow_callback_offset = (int)Marshal.OffsetOf<SoundIoInStream>("overflow_callback");
Action overflow_callback;
delegate void overflow_callback_delegate(IntPtr handle);
overflow_callback_delegate overflow_callback_native;
// FIXME: this should be taken care in more centralized/decent manner... we don't want to write
// this kind of code anywhere we need string marshaling.
List<IntPtr> allocated_hglobals = new List<IntPtr>();
public string Name
{
get { return Marshal.PtrToStringAnsi(Marshal.ReadIntPtr(handle, name_offset)); }
set
{
unsafe
{
var existing = Marshal.ReadIntPtr(handle, name_offset);
if (allocated_hglobals.Contains(existing))
{
allocated_hglobals.Remove(existing);
Marshal.FreeHGlobal(existing);
}
var ptr = Marshal.StringToHGlobalAnsi(value);
Marshal.WriteIntPtr(handle, name_offset, ptr);
allocated_hglobals.Add(ptr);
}
}
}
static readonly int name_offset = (int)Marshal.OffsetOf<SoundIoInStream>("name");
public bool NonTerminalHint
{
get { return Marshal.ReadInt32(handle, non_terminal_hint_offset) != 0; }
}
static readonly int non_terminal_hint_offset = (int)Marshal.OffsetOf<SoundIoInStream>("non_terminal_hint");
public int BytesPerFrame
{
get { return Marshal.ReadInt32(handle, bytes_per_frame_offset); }
}
static readonly int bytes_per_frame_offset = (int)Marshal.OffsetOf<SoundIoInStream>("bytes_per_frame");
public int BytesPerSample
{
get { return Marshal.ReadInt32(handle, bytes_per_sample_offset); }
}
static readonly int bytes_per_sample_offset = (int)Marshal.OffsetOf<SoundIoInStream>("bytes_per_sample");
public string LayoutErrorMessage
{
get
{
var code = (SoundIoError)Marshal.ReadInt32(handle, layout_error_offset);
return code == SoundIoError.SoundIoErrorNone ? null : Marshal.PtrToStringAnsi(Natives.soundio_strerror((int)code));
}
}
static readonly int layout_error_offset = (int)Marshal.OffsetOf<SoundIoInStream>("layout_error");
// functions
public void Open()
{
var ret = (SoundIoError)Natives.soundio_instream_open(handle);
if (ret != SoundIoError.SoundIoErrorNone)
{
throw new SoundIOException(ret);
}
}
public void Start()
{
var ret = (SoundIoError)Natives.soundio_instream_start(handle);
if (ret != SoundIoError.SoundIoErrorNone)
{
throw new SoundIOException(ret);
}
}
public SoundIOChannelAreas BeginRead(ref int frameCount)
{
IntPtr ptrs = default;
int nativeFrameCount = frameCount;
unsafe
{
var frameCountPtr = &nativeFrameCount;
var ptrptr = &ptrs;
var ret = (SoundIoError)Natives.soundio_instream_begin_read(handle, (IntPtr)ptrptr, (IntPtr)frameCountPtr);
frameCount = *frameCountPtr;
if (ret != SoundIoError.SoundIoErrorNone)
{
throw new SoundIOException(ret);
}
return new SoundIOChannelAreas(ptrs, Layout.ChannelCount, frameCount);
}
}
public void EndRead()
{
var ret = (SoundIoError)Natives.soundio_instream_end_read(handle);
if (ret != SoundIoError.SoundIoErrorNone)
{
throw new SoundIOException(ret);
}
}
public void Pause(bool pause)
{
var ret = (SoundIoError)Natives.soundio_instream_pause(handle, pause);
if (ret != SoundIoError.SoundIoErrorNone)
{
throw new SoundIOException(ret);
}
}
public double GetLatency()
{
unsafe
{
double* dptr = null;
IntPtr p = new IntPtr(dptr);
var ret = (SoundIoError)Natives.soundio_instream_get_latency(handle, p);
if (ret != SoundIoError.SoundIoErrorNone)
{
throw new SoundIOException(ret);
}
dptr = (double*)p;
return *dptr;
}
}
}
}