private unsafe static UnsafeColor[] ComputeColors(Color color, int height, double[] shadows)
{
if (height < 0)
{
throw new ArgumentOutOfRangeException("height");
}
if (shadows == null)
{
throw new ArgumentNullException("shadows");
}
UnsafeColor[] colors = new UnsafeColor[height];
fixed(UnsafeColor *ptrColors = &colors[0])
{
UnsafeColor unsafeColor;
for (int n = 0; n < shadows.Length; n++)
{
unsafeColor = new UnsafeColor((byte)(color.R * shadows[n] + 0.5), (byte)(color.G * shadows[n] + 0.5), (byte)(color.B * shadows[n] + 0.5));
ptrColors[n] = unsafeColor;
ptrColors[colors.Length - n - 1] = unsafeColor;
}
}
return(colors);
}
public ComponentPadding(CanvasContext ctx, JObject cfg) : base(ctx)
{
height = UtilReadConfigValue(cfg, "height", 200);
color = new UnsafeColor(
UtilReadConfigValue <byte>(cfg, "r", 0),
UtilReadConfigValue <byte>(cfg, "g", 0),
UtilReadConfigValue <byte>(cfg, "b", 0)
);
}
public SpectrumVideoCanvas(SpectrumVideoSource source, SpectrumVideoCanvasConfig config, IOutputProvider outputProvider)
{
//Set
width = config.video_output.width;
label = config.label;
decimation = config.baseband.decimation;
frameRate = config.video_output.frameRate;
this.outputProvider = outputProvider;
this.source = source;
//Create IQ decimator and oscilator
oscillator = new Oscillator(SampleRate, config.baseband.freqOffset);
decimator = new ComplexDecimator(SampleRate, DecimatedSampleRate, config.baseband.decimation, config.baseband.decimationAttenuation, DecimatedSampleRate * config.baseband.decimationTransitionRatio);
//Create all audio resources
foreach (var o in config.audio_outputs)
{
AddResource(new AudioResource(o, this));
}
//Create all components
components = new SpectrumVideoComponent[config.components.Count];
componentOffsets = new int[config.components.Count];
for (int i = 0; i < components.Length; i++)
{
components[i] = ComponentFactory.MakeComponent(this, config.components[i]);
}
//Get the image dimensions by calculating the total height
height = 0;
for (int i = 0; i < components.Length; i++)
{
componentOffsets[i] = height * ImageWidth;
height += components[i].Height;
}
//Create misc
videoOutput = outputProvider.GetVideoOutput(config.video_output.filename, ImageWidth, ImageHeight, config.video_output.frameRate, BufferSize);
frameBuffer = UnsafeBuffer.Create(ImageWidth * ImageHeight, out frameBufferPtr);
buffer = UnsafeBuffer.Create(BufferSize, out bufferPtr);
textGenerator = FontStore.CreateRenderer(ImageWidth, ImageHeight);
//Fill the entire canvas with black
for (int i = 0; i < ImageWidth * ImageHeight; i++)
{
frameBufferPtr[i] = new UnsafeColor(0, 0, 0);
}
//Init all components
for (int i = 0; i < components.Length; i++)
{
components[i].Init();
components[i].InitFrame(frameBufferPtr + componentOffsets[i]);
}
}
protected override void DrawableViewReset(int width, int height)
{
//Fill with black
for (int y = 0; y < height; y++)
{
UnsafeColor *lnDst = pixels + (y * width);
for (int x = 0; x < width; x++)
{
lnDst[x] = new UnsafeColor(0, 0, 0);
}
}
}
public unsafe void RenderCharacter(UnsafeColor *ptr, int canvasWidth, char character, UnsafeColor color)
{
//Try to find character data
if (character == (char)0x00 || character == '\n' || character == '\r')
{
//Ignore. This is a null or invisible character
}
else if (characters.ContainsKey(character))
{
//Copy pixel data
var cha = characters[character];
for (int i = 0; i < width * fullHeight; i++)
{
//Check if this is black to save CPU
if (cha.payload[i] == 0)
{
continue;
}
//Get location in memory
UnsafeColor *pxl = ptr + (canvasWidth * (i / width)) + (i % width);
//Update
if (cha.payload[i] == byte.MaxValue)
{
//Full brightness. Cheat
*pxl = color;
}
else
{
//Mix
float scale = (float)cha.payload[i] / 256;
float scaleR = 1 - scale;
* pxl = new UnsafeColor(
(byte)(((*pxl).r * scaleR) + (color.r * scale)),
(byte)(((*pxl).g * scaleR) + (color.g * scale)),
(byte)(((*pxl).b * scaleR) + (color.b * scale))
);
}
}
}
else
{
//Write a blank spot, as this character isn't found
}
}
public unsafe void RenderLine(UnsafeColor *ptr, int canvasWidth, int x, int y, char[] chars, int count, UnsafeColor color)
{
RenderLine(ptr + (y * canvasWidth) + x, canvasWidth, chars, count, color);
}
public unsafe void RenderLine(UnsafeColor *ptr, int canvasWidth, char[] chars, int count, UnsafeColor color)
{
for (int i = 0; i < Math.Min(chars.Length, count); i++)
{
RenderCharacter(ptr, canvasWidth, chars[i], color);
ptr += width + 1;
}
}
private static unsafe UnsafeColor[] ComputeColors(Color color, int height, double[] shadows)
{
if (height < 0)
throw new ArgumentOutOfRangeException("height");
if (shadows == null)
throw new ArgumentNullException("shadows");
UnsafeColor[] colors = new UnsafeColor[height];
fixed (UnsafeColor* ptrColors = &colors[0])
{
UnsafeColor unsafeColor;
for (int n = 0; n < shadows.Length; n++)
{
unsafeColor = new UnsafeColor((byte)(color.R * shadows[n] + 0.5), (byte)(color.G * shadows[n] + 0.5), (byte)(color.B * shadows[n] + 0.5));
ptrColors[n] = unsafeColor;
ptrColors[colors.Length - n - 1] = unsafeColor;
}
}
return colors;
}
