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Sdl backend (#670)

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* [audio] added sdl audio backend and in-tree atrac9 decoder

* [input] replaced per-platform pad readers with sdl gamepad input

* [video] added sdl window and host display plumbing

* [gui] added host display options and per-game render settings

* [bink] synced host movie playback to the guest audio clock

* [cpu] hooked windows write faults into guest image tracking

* [perf] added guest and render profiling, reserved host cpu lanes

* [kernel] fixed stale pthread mutex handle alias

* [host] wired the sdl session, save-data paths and project references

* [audio] hoisted ajm trace stackalloc out of its loop

* [video] Add guest image sync setting

* [build] Strip native symbols

* reuse
This commit is contained in:
Berk
2026-07-28 03:33:26 +03:00
committed by GitHub
parent b4cc5f88ca
commit 2b6bd5a532
111 changed files with 9846 additions and 4479 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/SharpEmu.Libs/Audio/AudioOutExports.cs
+43 -20
View File
@@ -44,6 +44,7 @@ public static class AudioOutExports
int channels,
int bytesPerSample,
bool isFloat,
bool preservesGuestFormat,
IHostAudioStream? backend)
{
UserId = userId;
@@ -54,6 +55,7 @@ public static class AudioOutExports
Channels = channels;
BytesPerSample = bytesPerSample;
IsFloat = isFloat;
PreservesGuestFormat = preservesGuestFormat;
Backend = backend;
}
@@ -65,6 +67,7 @@ public static class AudioOutExports
public int Channels { get; }
public int BytesPerSample { get; }
public bool IsFloat { get; }
public bool PreservesGuestFormat { get; }
public IHostAudioStream? Backend { get; }
public object SubmissionGate { get; } = new();
public volatile float Volume = 1.0f;
@@ -140,6 +143,7 @@ public static class AudioOutExports
}
IHostAudioStream? backend = null;
var preservesGuestFormat = false;
string backendName;
try
{
@@ -152,7 +156,18 @@ public static class AudioOutExports
else
{
var audio = HostPlatform.Current.Audio;
backend = audio.OpenStereoPcm16Stream(frequency);
if (audio is IHostPcmAudioOutput pcmAudio)
{
backend = pcmAudio.OpenPcmStream(
frequency,
channels,
isFloat ? HostPcmFormat.Float32 : HostPcmFormat.Signed16);
preservesGuestFormat = true;
}
else
{
backend = audio.OpenStereoPcm16Stream(frequency);
}
backendName = audio.BackendName;
}
}
@@ -173,6 +188,7 @@ public static class AudioOutExports
channels,
bytesPerSample,
isFloat,
preservesGuestFormat,
backend);
Console.Error.WriteLine(
$"[LOADER][INFO] AudioOut port {handle}: {frequency} Hz, " +
@@ -321,18 +337,13 @@ public static class AudioOutExports
return ctx.SetReturn(0);
}
var outputLength = checked((int)port.BufferLength * AudioPcmConversion.OutputFrameSize);
var outputLength = port.PreservesGuestFormat
? port.BufferByteLength
: checked((int)port.BufferLength * AudioPcmConversion.OutputFrameSize);
var output = ArrayPool<byte>.Shared.Rent(outputLength);
try
{
AudioPcmConversion.ConvertToStereoPcm16(
source,
output.AsSpan(0, outputLength),
checked((int)port.BufferLength),
port.Channels,
port.BytesPerSample,
port.IsFloat,
port.Volume);
ConvertForHost(port, source, output.AsSpan(0, outputLength));
if (!port.Backend.Submit(output.AsSpan(0, outputLength)))
{
port.PaceSilence();
@@ -449,17 +460,11 @@ public static class AudioOutExports
TraceOutput(output.Handle, output.Port, source);
output.HostBufferLength = checked(
(int)output.Port.BufferLength * AudioPcmConversion.OutputFrameSize);
output.HostBufferLength = output.Port.PreservesGuestFormat
? output.Port.BufferByteLength
: checked((int)output.Port.BufferLength * AudioPcmConversion.OutputFrameSize);
output.HostBuffer = ArrayPool<byte>.Shared.Rent(output.HostBufferLength);
AudioPcmConversion.ConvertToStereoPcm16(
source,
output.HostBuffer.AsSpan(0, output.HostBufferLength),
checked((int)output.Port.BufferLength),
output.Port.Channels,
output.Port.BytesPerSample,
output.Port.IsFloat,
output.Port.Volume);
ConvertForHost(output.Port, source, output.HostBuffer.AsSpan(0, output.HostBufferLength));
}
finally
{
@@ -513,6 +518,24 @@ public static class AudioOutExports
(ulong)candidate.BufferLength * current.Frequency >
(ulong)current.BufferLength * candidate.Frequency;
private static void ConvertForHost(PortState port, ReadOnlySpan<byte> source, Span<byte> destination)
{
if (port.PreservesGuestFormat)
{
AudioPcmConversion.CopyWithVolume(source, destination, port.IsFloat, port.Volume);
return;
}
AudioPcmConversion.ConvertToStereoPcm16(
source,
destination,
checked((int)port.BufferLength),
port.Channels,
port.BytesPerSample,
port.IsFloat,
port.Volume);
}
private static void TraceOutput(int handle, PortState port, ReadOnlySpan<byte> source)
{
if (!_traceOutput)