public DataLineFile1D(string name, Stream1DReader reader, int samplerate, TimeStamp begin)
{
_zoomLevels = new [] { 64, 128, 256, 512, 1024, 2048, 4096, 8192, 2 * 8192 };
var biggestScreen = System.Windows.Forms.Screen.AllScreens.Max(screen => screen.WorkingArea.Size);
var bufferSize = biggestScreen.Width * _zoomLevels.First();
_begin = begin;
_reader = reader;
_samplerate = samplerate;
_floatTemp = new float[bufferSize];
_doubleTemp = new double[bufferSize];
_minMaxTemp = new MinMax[bufferSize];
_ringBuffer = new VertexRingBuffer(bufferSize);
_ringBufferMax = new VertexRingBuffer(bufferSize);
_ringBufferMin = new VertexRingBuffer(bufferSize);
Name = name;
ReadFile();
}
/// <summary>
/// Continuous-time stream of data
/// </summary>
/// <param name="size">number of samples the buffer can hold</param>
public DataLine1D(string name, int size, int samplerate)
{
_zoomLevels = new[] {
1 << 6,
1 << 7,
1 << 8,
1 << 9,
1 << 10,
1 << 11,
1 << 12,
1 << 13,
1 << 14,
1 << 15,
1 << 16
};
_ringBuffer = new VertexRingBuffer(size);
_ringBufferMax = new VertexRingBuffer(size);
_ringBufferMin = new VertexRingBuffer(size);
_floatTemp = new float[size];
_minMaxTemp = new MinMax[size];
Name = name;
SamplesPerSecond = samplerate;
_signalBuffer = new GenericRingBuffer <float>(size)
{
FixedSize = true
};
_minMax = MinMaxCache.CreateCascade(_zoomLevels, size);
_minMaxFst = (MinMaxCacheFirstStage)_minMax[0];
// init as -2 because -1 is for fully zoomed in and 0-.. is for other zoom levels.
// -2 so that in Render() a level change occurs
_level = -2;
}