public void TestSparseSampleByteStream()
{
const int sliverSize = 2 * 2 * 4; // uncompressed 2x2 RGBA image... worst case
const int bufferSlivers = 10;
BufferAllocator<byte> allocator = new BufferAllocator<byte>(sliverSize * bufferSlivers, 1, sizeof(float));
byte[] appendBuffer = new byte[sliverSize];
for (int i = 0; i < sliverSize; i++) {
appendBuffer[i] = (byte)i;
}
SparseSampleByteStream stream = new SparseSampleByteStream(10, allocator, sliverSize);
stream.Append(11, new Slice<Frame, byte>(new Buf<byte>(-9, appendBuffer), sliverSize));
// now let's get it back out
Slice<Frame, byte> slice = stream.GetClosestSliver(11);
HoloDebug.Assert(slice.Duration == 1);
HoloDebug.Assert(slice.SliverSize == sliverSize);
for (int i = 0; i < sliverSize; i++) {
HoloDebug.Assert(slice[0, i] == (byte)i);
}
// now let's copy it to intptr
byte[] target = new byte[sliverSize];
unsafe {
fixed (byte* p = target) {
IntPtr pp = new IntPtr(p);
stream.CopyTo(11, pp);
}
}
for (int i = 0; i < sliverSize; i++) {
HoloDebug.Assert(target[i] == (byte)i);
}
SparseSampleByteStream stream2 = new SparseSampleByteStream(10, allocator, sliverSize);
unsafe {
fixed (byte* p = target) {
IntPtr pp = new IntPtr(p);
stream2.Append(11, pp);
}
}
Slice<Frame, byte> slice2 = stream2.GetClosestSliver(12);
HoloDebug.Assert(slice2.Duration == 1);
HoloDebug.Assert(slice2.SliverSize == sliverSize);
for (int i = 0; i < sliverSize; i++) {
HoloDebug.Assert(slice2[0, i] == (byte)i);
}
// now verify looping and shutting work as expected
for (int i = 0; i < appendBuffer.Length; i++) {
appendBuffer[i] += (byte)appendBuffer.Length;
}
stream2.Append(21, new Slice<Frame, byte>(new Buf<byte>(-10, appendBuffer), sliverSize));
Slice<Frame, byte> slice3 = stream2.GetClosestSliver(12);
HoloDebug.Assert(slice3.Duration == 1);
HoloDebug.Assert(slice3.SliverSize == sliverSize);
HoloDebug.Assert(slice3[0, 0] == (byte)0);
Slice<Frame, byte> slice4 = stream2.GetClosestSliver(22);
HoloDebug.Assert(slice4.Duration == 1);
HoloDebug.Assert(slice4.SliverSize == sliverSize);
HoloDebug.Assert(slice4[0, 0] == (byte)sliverSize);
stream2.Shut((ContinuousDuration)20);
// now the closest sliver to 32 should be the first sliver
Slice<Frame, byte> slice5 = stream2.GetClosestSliver(32);
HoloDebug.Assert(slice5.Duration == 1);
HoloDebug.Assert(slice5.SliverSize == sliverSize);
HoloDebug.Assert(slice5[0, 0] == (byte)0);
// and 42, the second
Slice<Frame, byte> slice6 = stream2.GetClosestSliver(42);
HoloDebug.Assert(slice6.Duration == 1);
HoloDebug.Assert(slice6.SliverSize == sliverSize);
HoloDebug.Assert(slice6[0, 0] == (byte)sliverSize);
}
