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EllerbachEllerbach
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Add WS28xx, SK2816 for Esp32 using RMT (#334)
1 parent 2fc020d commit 303340f

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-92
lines changed

‎devices/Ws28xx.Esp32/BitmapImage.cs

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System;
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using System.Drawing;
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namespace Iot.Device.Ws28xx.Esp32
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{
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/// <summary>
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/// Represents bitmap image
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/// </summary>
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public abstract class BitmapImage
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{
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/// <summary>
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/// Initializes a <see cref="T:Iot.Device.Graphics.BitmapImage" /> instance with the specified data, width, height and stride.
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/// </summary>
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/// <param name="data">Data representing the image (derived class defines a specific format)</param>
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/// <param name="width">Width of the image</param>
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/// <param name="height">Height of the image</param>
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/// <param name="stride">Number of bytes per row</param>
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protected BitmapImage(byte[] data, int width, int height, int stride)
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{
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_data = data;
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Width = width;
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Height = height;
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Stride = stride;
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}
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private byte[] _data;
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/// <summary>
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/// Data related to the image (derived class defines a specific format)
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/// </summary>
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public byte[] Data => _data;
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/// <summary>
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/// Width of the image
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/// </summary>
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public int Width { get; }
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/// <summary>
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/// Height of the image
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/// </summary>
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public int Height { get; }
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/// <summary>
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/// Number of bytes per row
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/// </summary>
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public int Stride { get; }
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/// <summary>
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/// Sets pixel at specific position
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/// </summary>
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/// <param name="x">X coordinate of the pixel</param>
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/// <param name="y">Y coordinate of the pixel</param>
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/// <param name="color">Color to set the pixel to</param>
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public abstract void SetPixel(int x, int y, Color color);
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/// <summary>
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/// Sets pixel at specific position
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/// </summary>
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/// <param name="x">X coordinate of the pixel</param>
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/// <param name="y">Y coordinate of the pixel</param>
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/// <param name="r">Red color</param>
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/// <param name="g">Green color</param>
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/// <param name="b">Blue color</param>
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public abstract void SetPixel(int x, int y, byte r, byte g, byte b);
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/// <summary>
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/// Clears the image to specific color
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/// </summary>
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/// <param name="color">Color to clear the image. Defaults to black.</param>
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public virtual void Clear(Color color)
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{
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for (int y = 0; y < Height; y++)
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{
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for (int x = 0; x < Width; x++)
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{
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SetPixel(x, y, color);
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}
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}
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}
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/// <summary>
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/// Clears whole image
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/// </summary>
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public abstract void Clear();
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/// <summary>
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/// Clears selected pixel
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/// </summary>
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public abstract void Clear(int x, int y);
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}
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}

‎devices/Ws28xx.Esp32/BitmapImageNeo3.cs

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System;
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using System.Drawing;
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namespace Iot.Device.Ws28xx.Esp32
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{
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/// <summary>
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/// Special 24bit RGB format for Neo pixel LEDs where each bit is converted to 3 bits.
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/// A one is converted to 110, a zero is converted to 100.
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/// </summary>
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internal class BitmapImageNeo3 : BitmapImage
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{
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protected const int BytesPerComponent = 3;
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protected const int BytesPerPixel = BytesPerComponent * 3;
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public BitmapImageNeo3(int width, int height)
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: base(new byte[width * height * BytesPerPixel], width, height, width * BytesPerPixel)
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{
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}
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public override void SetPixel(int x, int y, Color c)
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{
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var offset = y * Stride + x * BytesPerPixel;
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Data[offset++] = _lookup[c.G * BytesPerComponent + 0];
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Data[offset++] = _lookup[c.G * BytesPerComponent + 1];
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Data[offset++] = _lookup[c.G * BytesPerComponent + 2];
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Data[offset++] = _lookup[c.R * BytesPerComponent + 0];
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Data[offset++] = _lookup[c.R * BytesPerComponent + 1];
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Data[offset++] = _lookup[c.R * BytesPerComponent + 2];
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Data[offset++] = _lookup[c.B * BytesPerComponent + 0];
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Data[offset++] = _lookup[c.B * BytesPerComponent + 1];
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Data[offset++] = _lookup[c.B * BytesPerComponent + 2];
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}
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public override void Clear(int x, int y)
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{
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var offset = y * Stride + x * BytesPerPixel;
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Array.Clear(Data, offset, 9);
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}
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public override void Clear()
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{
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Array.Clear(Data, 0, Data.Length);
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}
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public override void SetPixel(int x, int y, byte r, byte g, byte b)
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{
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var offset = y * Stride + x * BytesPerPixel;
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Data[offset++] = _lookup[g * BytesPerComponent + 0];
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Data[offset++] = _lookup[g * BytesPerComponent + 1];
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Data[offset++] = _lookup[g * BytesPerComponent + 2];
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Data[offset++] = _lookup[r * BytesPerComponent + 0];
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Data[offset++] = _lookup[r * BytesPerComponent + 1];
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Data[offset++] = _lookup[r * BytesPerComponent + 2];
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Data[offset++] = _lookup[b * BytesPerComponent + 0];
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Data[offset++] = _lookup[b * BytesPerComponent + 1];
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Data[offset++] = _lookup[b * BytesPerComponent + 2];
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}
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protected static readonly byte[] _lookup = new byte[256 * BytesPerComponent];
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static BitmapImageNeo3()
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{
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for (int i = 0; i < 256; i++)
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{
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int data = 0;
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for (int j = 7; j >= 0; j--)
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{
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data = (data << 3) | 0b100 | ((i >> j) << 1) & 2;
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}
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_lookup[i * BytesPerComponent + 0] = unchecked((byte)(data >> 16));
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_lookup[i * BytesPerComponent + 1] = unchecked((byte)(data >> 8));
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_lookup[i * BytesPerComponent + 2] = unchecked((byte)(data >> 0));
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}
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}
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}
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}

‎devices/Ws28xx.Esp32/BitmapImageNeo3RGB.cs

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System.Drawing;
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namespace Iot.Device.Ws28xx.Esp32
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{
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/// <summary>
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/// Special 24bit RGB format for Neo pixel LEDs where each bit is converted to 3 bits.
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/// A one is converted to 110, a zero is converted to 100.
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/// </summary>
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/// <seealso cref="Iot.Device.Ws28xx.BitmapImageNeo3" />
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internal class BitmapImageNeo3Rgb : BitmapImageNeo3
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{
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public BitmapImageNeo3Rgb(int width, int height)
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: base(width, height)
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{
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}
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public override void SetPixel(int x, int y, Color c)
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{
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var offset = y * Stride + x * BytesPerPixel;
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Data[offset++] = _lookup[c.R * BytesPerComponent + 0];
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Data[offset++] = _lookup[c.R * BytesPerComponent + 1];
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Data[offset++] = _lookup[c.R * BytesPerComponent + 2];
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Data[offset++] = _lookup[c.G * BytesPerComponent + 0];
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Data[offset++] = _lookup[c.G * BytesPerComponent + 1];
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Data[offset++] = _lookup[c.G * BytesPerComponent + 2];
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Data[offset++] = _lookup[c.B * BytesPerComponent + 0];
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Data[offset++] = _lookup[c.B * BytesPerComponent + 1];
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Data[offset++] = _lookup[c.B * BytesPerComponent + 2];
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}
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}
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}

‎devices/Ws28xx.Esp32/BitmapImageNeo4.cs

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System.Drawing;
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namespace Iot.Device.Ws28xx.Esp32
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{
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internal class BitmapImageNeo4 : BitmapImage
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{
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private const int BytesPerComponent = 3;
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private const int BytesPerPixel = BytesPerComponent * 4;
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// This field defines the count within the lookup table. The length correlates to the possible values of a single byte.
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private const int LookupCount = 256;
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private static readonly byte[] _lookup = new byte[LookupCount * BytesPerComponent];
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static BitmapImageNeo4()
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{
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ClearInternal();
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}
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public BitmapImageNeo4(int width, int height)
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: base(new byte[width * height * BytesPerPixel], width, height, width * BytesPerPixel)
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{
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}
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public override void Clear() => ClearInternal();
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private static void ClearInternal()
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{
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for (int i = 0; i < LookupCount; i++)
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{
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int data = 0;
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for (int j = 7; j >= 0; j--)
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{
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data = (data << 3) | 0b100 | ((i >> j) << 1) & 2;
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}
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_lookup[i * BytesPerComponent + 0] = unchecked((byte)(data >> 16));
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_lookup[i * BytesPerComponent + 1] = unchecked((byte)(data >> 8));
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_lookup[i * BytesPerComponent + 2] = unchecked((byte)(data >> 0));
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}
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}
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public override void Clear(int x, int y) => SetPixel(x, y, Color.Black);
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public override void SetPixel(int x, int y, Color c)
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{
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// Alpha is used as white.
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var offset = y * Stride + x * BytesPerPixel;
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Data[offset++] = _lookup[c.G * BytesPerComponent + 0];
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Data[offset++] = _lookup[c.G * BytesPerComponent + 1];
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Data[offset++] = _lookup[c.G * BytesPerComponent + 2];
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Data[offset++] = _lookup[c.R * BytesPerComponent + 0];
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Data[offset++] = _lookup[c.R * BytesPerComponent + 1];
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Data[offset++] = _lookup[c.R * BytesPerComponent + 2];
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Data[offset++] = _lookup[c.B * BytesPerComponent + 0];
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Data[offset++] = _lookup[c.B * BytesPerComponent + 1];
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Data[offset++] = _lookup[c.B * BytesPerComponent + 2];
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Data[offset++] = _lookup[c.A * BytesPerComponent + 0];
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Data[offset++] = _lookup[c.A * BytesPerComponent + 1];
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Data[offset++] = _lookup[c.A * BytesPerComponent + 2];
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}
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public override void SetPixel(int x, int y, byte r, byte g, byte b) => SetPixel(x, y, Color.FromArgb(r, g, b));
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}
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}

‎devices/Ws28xx.Esp32/BitmapImageWs2808.cs

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System;
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using System.Drawing;
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namespace Iot.Device.Ws28xx.Esp32
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{
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internal class BitmapImageWs2808 : BitmapImage
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{
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private const int BytesPerPixel = 3;
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public BitmapImageWs2808(int width, int height)
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: base(new byte[width * height * BytesPerPixel], width, height, width * BytesPerPixel)
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{
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}
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public override void SetPixel(int x, int y, Color c)
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{
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var offset = y * Stride + x * BytesPerPixel;
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Data[offset++] = c.R;
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Data[offset++] = c.G;
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Data[offset++] = c.B;
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}
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public override void SetPixel(int x, int y, byte r, byte g, byte b)
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{
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var offset = y * Stride + x * BytesPerPixel;
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Data[offset++] = r;
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Data[offset++] = g;
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Data[offset++] = b;
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}
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/// <inheritdoc />
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public override void Clear()
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{
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Array.Clear(Data, 0, Data.Length);
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}
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public override void Clear(int x, int y)
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{
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var offset = y * Stride + x * BytesPerPixel;
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Array.Clear(Data, offset, 3);
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}
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}
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}

‎devices/Ws28xx.Esp32/BitmapImageWs2808GRB.cs

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System;
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using System.Drawing;
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namespace Iot.Device.Ws28xx.Esp32
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{
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internal class BitmapImageWs2808Grb : BitmapImage
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{
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private const int BytesPerPixel = 3;
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public BitmapImageWs2808Grb(int width, int height)
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: base(new byte[width * height * BytesPerPixel], width, height, width * BytesPerPixel)
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{
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}
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public override void SetPixel(int x, int y, Color c)
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{
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var offset = y * Stride + x * BytesPerPixel;
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Data[offset++] = c.G;
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Data[offset++] = c.R;
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Data[offset++] = c.B;
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}
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public override void SetPixel(int x, int y, byte r, byte g, byte b)
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{
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var offset = y * Stride + x * BytesPerPixel;
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Data[offset++] = g;
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Data[offset++] = r;
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Data[offset++] = b;
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}
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/// <inheritdoc />
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public override void Clear()
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{
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Array.Clear(Data, 0, Data.Length);
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}
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public override void Clear(int x, int y)
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{
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var offset = y * Stride + x * BytesPerPixel;
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Array.Clear(Data, offset, 3);
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}
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}
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}

‎devices/Ws28xx.Esp32/Properties/AssemblyInfo.cs

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using System.Reflection;
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using System.Runtime.InteropServices;
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[assembly: AssemblyTitle("Iot.Device.Ws28xx.Esp32")]
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[assembly: AssemblyCompany("nanoFramework Contributors")]
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[assembly: AssemblyCopyright("Copyright(c).NET Foundation and Contributors")]
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[assembly: ComVisible(false)]
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