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Merge branch 'main' of https://github.com/Ale32bit/Capy64

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Ale32bit 2023-07-21 14:50:56 +02:00
commit fe9446e2e7
1 changed files with 23 additions and 6 deletions
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29
Capy64/Runtime/Libraries/AudioLib.cs
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@ -89,6 +89,14 @@ public class AudioLib : IComponent
return 1;
}
// Convert 8bit PCM to 16bit PCM
private static void PCMTo16bit(Span<byte> buffer, int i, byte value)
{
var value16bit = value / sbyte.MaxValue * short.MaxValue;
buffer[2 * i - 2] = (byte)(value16bit & 0xff);
buffer[2 * i - 1] = (byte)(value16bit >> 8);
}
private static int L_Play(IntPtr state)
{
var L = Lua.FromIntPtr(state);
@ -97,20 +105,24 @@ public class AudioLib : IComponent
if (L.IsString(1))
{
buffer = L.CheckBuffer(1);
var inputBuffer = L.CheckBuffer(1);
buffer = new byte[inputBuffer.Length * 2];
var span = new Span<byte>(buffer);
for (int i = 1; i < inputBuffer.Length; i++)
{
PCMTo16bit(span, i, inputBuffer[i]);
}
}
else
{
L.CheckType(1, LuaType.Table);
var len = L.RawLen(1);
buffer = new byte[len * 2];
var span = new Span<byte>(buffer);
for (int i = 1; i <= len; i++)
{
L.GetInteger(1, i);
// Convert 8bit PCM to 16bit PCM
var value = (short)(L.CheckNumber(-1) / sbyte.MaxValue * short.MaxValue);
buffer[2 * i - 2] = (byte)(value & 0xff);
buffer[2 * i - 1] = (byte)(value >> 8);
PCMTo16bit(span, i, (byte)L.CheckNumber(-1));
L.Pop(1);
}
}
@ -135,7 +147,12 @@ public class AudioLib : IComponent
L.Error(ex.Message);
}
return 0;
var playTime = _game.Audio.HQChannel.GetSampleDuration(buffer.Length);
L.PushBoolean(true);
L.PushNumber(playTime.TotalSeconds);
return 2;
}
private static int L_Beep(IntPtr state)