public void SaveCreateBufferRoundTrip()
{
RewindConfig config = new RewindConfig
{
BufferSize = 1,
TargetFrameLength = 10
};
var buff = new ZwinderBuffer(config);
var ss = new StateSource {
PaddingData = new byte[500]
};
for (var frame = 0; frame < 2090; frame++)
{
ss.Frame = frame;
buff.Capture(frame, (s) => ss.SaveStateBinary(new BinaryWriter(s)));
}
// states are 504 bytes large, buffer is 1048576 bytes large
Assert.AreEqual(buff.Count, 2080);
Assert.AreEqual(buff.GetState(0).Frame, 10);
Assert.AreEqual(buff.GetState(2079).Frame, 2089);
Assert.AreEqual(StateSource.GetFrameNumberInState(buff.GetState(0).GetReadStream()), 10);
Assert.AreEqual(StateSource.GetFrameNumberInState(buff.GetState(2079).GetReadStream()), 2089);
var ms = new MemoryStream();
buff.SaveStateBinary(new BinaryWriter(ms));
ms.Position = 0;
var buff2 = ZwinderBuffer.Create(new BinaryReader(ms), config);
Assert.AreEqual(buff.Size, buff2.Size);
Assert.AreEqual(buff.Used, buff2.Used);
Assert.AreEqual(buff2.Count, 2080);
Assert.AreEqual(buff2.GetState(0).Frame, 10);
Assert.AreEqual(buff2.GetState(2079).Frame, 2089);
Assert.AreEqual(StateSource.GetFrameNumberInState(buff2.GetState(0).GetReadStream()), 10);
Assert.AreEqual(StateSource.GetFrameNumberInState(buff2.GetState(2079).GetReadStream()), 2089);
}
public void WhatIfTheHeadStateWrapsAround()
{
var ss = new StateSource
{
PaddingData = new byte[400 * 1000]
};
using var zw = new ZwinderBuffer(new RewindConfig
{
BufferSize = 1,
TargetFrameLength = 1
});
// Need to get data in the zwinderbuffer so that the last state, and the last state in particular, wraps around
ss.Frame = 1;
zw.Capture(1, s => ss.SaveStateBinary(new BinaryWriter(s)), null, true);
ss.Frame = 2;
zw.Capture(2, s => ss.SaveStateBinary(new BinaryWriter(s)), null, true);
ss.Frame = 3;
zw.Capture(3, s => ss.SaveStateBinary(new BinaryWriter(s)), null, true);
zw.SaveStateBinary(new BinaryWriter(new MemoryStream()));
}