ryujinx/Ryujinx.Audio/Native/libsoundio/SoundIOOutStream.cs
Thomas Guillemard 5c44c9600f
Fix a memory corruption in SoundIO wrapper (#742)
This fix audio slowdown on Unix based platforms where soundio will try
to switch to mono because of the invalid data written.
2019-08-19 22:28:14 +02:00

255 lines
8.3 KiB
C#

using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
namespace SoundIOSharp
{
public class SoundIOOutStream : IDisposable
{
internal SoundIOOutStream (Pointer<SoundIoOutStream> handle)
{
this.handle = handle;
}
Pointer<SoundIoOutStream> handle;
public void Dispose ()
{
Natives.soundio_outstream_destroy (handle);
}
// Equality (based on handle)
public override bool Equals (object other)
{
var d = other as SoundIOOutStream;
return d != null && (this.handle == d.handle);
}
public override int GetHashCode ()
{
return (int)(IntPtr)handle;
}
public static bool operator == (SoundIOOutStream obj1, SoundIOOutStream obj2)
{
return (object)obj1 == null ? (object)obj2 == null : obj1.Equals (obj2);
}
public static bool operator != (SoundIOOutStream obj1, SoundIOOutStream obj2)
{
return (object)obj1 == null ? (object)obj2 != null : !obj1.Equals (obj2);
}
// fields
public SoundIODevice Device {
get { return new SoundIODevice (Marshal.ReadIntPtr (handle, device_offset)); }
}
static readonly int device_offset = (int)Marshal.OffsetOf<SoundIoOutStream> ("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<SoundIoOutStream> ("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<SoundIoOutStream> ("sample_rate");
public SoundIOChannelLayout Layout {
get { unsafe { return new SoundIOChannelLayout ((IntPtr) ((void*) ((IntPtr) handle + layout_offset))); } }
set {
unsafe {
Buffer.MemoryCopy ((void*)value.Handle, (void*)((IntPtr)handle + layout_offset),
Marshal.SizeOf<SoundIoChannelLayout> (), Marshal.SizeOf<SoundIoChannelLayout> ());
}
}
}
static readonly int layout_offset = (int)Marshal.OffsetOf<SoundIoOutStream> ("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<SoundIoOutStream> ("software_latency");
public float Volume {
get { return MarshalEx.ReadFloat (handle, volume_offset); }
set { MarshalEx.WriteFloat (handle, volume_offset, value); }
}
static readonly int volume_offset = (int)Marshal.OffsetOf<SoundIoOutStream> ("volume");
// error_callback
public Action ErrorCallback {
get { return error_callback; }
set {
error_callback = value;
if (value == null)
error_callback_native = null;
else
error_callback_native = stream => 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<SoundIoOutStream> ("error_callback");
Action error_callback;
delegate void error_callback_delegate (IntPtr handle);
error_callback_delegate error_callback_native;
// write_callback
public Action<int, int> WriteCallback {
get { return write_callback; }
set {
write_callback = value;
if (value == null)
write_callback_native = null;
else
write_callback_native = (h, frame_count_min, frame_count_max) => write_callback (frame_count_min, frame_count_max);
var ptr = Marshal.GetFunctionPointerForDelegate (write_callback_native);
Marshal.WriteIntPtr (handle, write_callback_offset, ptr);
}
}
static readonly int write_callback_offset = (int)Marshal.OffsetOf<SoundIoOutStream> ("write_callback");
Action<int, int> write_callback;
delegate void write_callback_delegate (IntPtr handle, int min, int max);
write_callback_delegate write_callback_native;
// underflow_callback
public Action UnderflowCallback {
get { return underflow_callback; }
set {
underflow_callback = value;
if (value == null)
underflow_callback_native = null;
else
underflow_callback_native = h => underflow_callback ();
var ptr = Marshal.GetFunctionPointerForDelegate (underflow_callback_native);
Marshal.WriteIntPtr (handle, underflow_callback_offset, ptr);
}
}
static readonly int underflow_callback_offset = (int)Marshal.OffsetOf<SoundIoOutStream> ("underflow_callback");
Action underflow_callback;
delegate void underflow_callback_delegate (IntPtr handle);
underflow_callback_delegate underflow_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<SoundIoOutStream> ("name");
public bool NonTerminalHint {
get { return Marshal.ReadInt32 (handle, non_terminal_hint_offset) != 0; }
}
static readonly int non_terminal_hint_offset = (int)Marshal.OffsetOf<SoundIoOutStream> ("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<SoundIoOutStream> ("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<SoundIoOutStream> ("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<SoundIoOutStream> ("layout_error");
// functions
public void Open ()
{
var ret = (SoundIoError) Natives.soundio_outstream_open (handle);
if (ret != SoundIoError.SoundIoErrorNone)
throw new SoundIOException (ret);
}
public void Start ()
{
var ret = (SoundIoError)Natives.soundio_outstream_start (handle);
if (ret != SoundIoError.SoundIoErrorNone)
throw new SoundIOException (ret);
}
public SoundIOChannelAreas BeginWrite (ref int frameCount)
{
IntPtr ptrs = default (IntPtr);
int nativeFrameCount = frameCount;
unsafe {
var frameCountPtr = &nativeFrameCount;
var ptrptr = &ptrs;
var ret = (SoundIoError)Natives.soundio_outstream_begin_write (handle, (IntPtr) ptrptr, (IntPtr) frameCountPtr);
frameCount = *frameCountPtr;
if (ret != SoundIoError.SoundIoErrorNone)
throw new SoundIOException (ret);
return new SoundIOChannelAreas (ptrs, Layout.ChannelCount, frameCount);
}
}
public void EndWrite ()
{
var ret = (SoundIoError) Natives.soundio_outstream_end_write (handle);
if (ret != SoundIoError.SoundIoErrorNone)
throw new SoundIOException (ret);
}
public void ClearBuffer ()
{
Natives.soundio_outstream_clear_buffer (handle);
}
public void Pause (bool pause)
{
var ret = (SoundIoError) Natives.soundio_outstream_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_outstream_get_latency (handle, p);
if (ret != SoundIoError.SoundIoErrorNone)
throw new SoundIOException (ret);
dptr = (double*) p;
return *dptr;
}
}
public void SetVolume (double volume)
{
var ret = (SoundIoError) Natives.soundio_outstream_set_volume (handle, volume);
if (ret != SoundIoError.SoundIoErrorNone)
throw new SoundIOException (ret);
}
}
}