void ConfigureVideoProfile(int outputPort)
{
var rational = new MmalRational(CameraConfig.Framerate);
var macroblocks = (CameraConfig.Resolution.Width >> 4) * (CameraConfig.Resolution.Height >> 4);
var macroblocksPSec = macroblocks * (rational.Num / rational.Den);
var videoLevels = GetNormalLevelLimits();
var level = videoLevels.First(c => c.Level == CameraConfig.VideoLevel);
if (macroblocks > level.MacroblocksLimit)
{
throw new PiCameraError("Resolution exceeds macroblock limit for selected profile and level.");
}
if (macroblocksPSec > level.MacroblocksPerSecLimit)
{
throw new PiCameraError("Resolution exceeds macroblocks/s limit for selected profile and level.");
}
var p = new MmalParameterVideoProfileS(CameraConfig.VideoProfile, CameraConfig.VideoLevel);
var arr = new [] { p };
var param = new MmalParameterVideoProfileType(new MmalParameterHeaderType(MmalParametersVideo.MmalParameterProfile, Marshal.SizeOf <MmalParameterVideoProfileType>()), arr);
var ptr = Marshal.AllocHGlobal(Marshal.SizeOf(param));
Marshal.StructureToPtr(param, ptr, false);
try
{
MmalCheck(MmalPort.SetParameter(Outputs[outputPort].Ptr, (MmalParameterHeaderType *)ptr), "Unable to set video profile.");
}
finally
{
Marshal.FreeHGlobal(ptr);
}
}
internal static unsafe void SetFramerateRange(this IPort port, MmalRational fpsLow, MmalRational fpsHigh)
{
var str = new MmalParameterFpsRangeType(
new MmalParameterHeaderType(
MmalParametersCamera.MmalParameterFpsRange,
Marshal.SizeOf <MmalParameterFpsRangeType>()), fpsLow, fpsHigh);
MmalCheck(MmalPort.SetParameter(port.Ptr, &str.Hdr), "Unable to set framerate range for port.");
}
public MmalVideoFormat(int width, int height, MmalRect crop, MmalRational frameRate,
MmalRational par, int colorSpace)
{
Width = width;
Height = height;
Crop = crop;
FrameRate = frameRate;
Par = par;
ColorSpace = colorSpace;
}
public MmalParameterCameraSettingsType(MmalParameterHeaderType hdr, int exposure, MmalRational analogGain,
MmalRational digitalGain, MmalRational awbRedGain, MmalRational awbBlueGain,
int focusPosition)
{
Hdr = hdr;
Exposure = exposure;
AnalogGain = analogGain;
DigitalGain = digitalGain;
AwbRedGain = awbRedGain;
AwbBlueGain = awbBlueGain;
FocusPosition = focusPosition;
}
internal static void SetBrightness(this MmalCameraComponent camera, int brightness)
{
MmalLog.Logger.LogDebug($"Setting brightness: {brightness}");
var value = new MmalRational(brightness, 100);
if (brightness >= 0 && brightness <= 100)
{
camera.Control.SetParameter(MmalParameterBrightness, value);
}
else
{
throw new Exception("Invalid brightness value");
}
}
internal static void SetContrast(this MmalCameraComponent camera, int contrast)
{
MmalLog.Logger.LogDebug($"Setting contrast: {contrast}");
var value = new MmalRational(contrast, 100);
if (contrast >= -100 && contrast <= 100)
{
camera.Control.SetParameter(MmalParameterContrast, value);
}
else
{
throw new Exception("Invalid contrast value");
}
}
internal static void SetSharpness(this MmalCameraComponent camera, int sharpness)
{
MmalLog.Logger.LogDebug($"Setting sharpness: {sharpness}");
var value = new MmalRational(sharpness, 100);
if (sharpness >= -100 && sharpness <= 100)
{
camera.Control.SetParameter(MmalParameterSharpness, value);
}
else
{
throw new Exception("Invalid sharpness value");
}
}
internal static void SetSaturation(this MmalCameraComponent camera, int saturation)
{
MmalLog.Logger.LogDebug($"Setting saturation: {saturation}");
var value = new MmalRational(saturation, 100);
if (saturation >= -100 && saturation <= 100)
{
camera.Control.SetParameter(MmalParameterSaturation, value);
}
else
{
throw new Exception("Invalid saturation value");
}
}
public MmalParameterAwbGainsType(MmalParameterHeaderType hdr, MmalRational rGain, MmalRational bGain)
{
Hdr = hdr;
RGain = rGain;
BGain = bGain;
}
public MmalParameterFpsRangeType(MmalParameterHeaderType hdr, MmalRational fpsLow, MmalRational fpsHigh)
{
Hdr = hdr;
FpsLow = fpsLow;
FpsHigh = fpsHigh;
}
public MmalParameterRationalType(MmalParameterHeaderType hdr, MmalRational value)
{
Hdr = hdr;
Value = value;
}