public void StrideTest1()
{
var strides = new VideoFormatInfo(PixelFormat.Rgba32, 800, 600).GetStrides(1);
Assert.Single(strides);
Assert.Equal(3200, strides[0]);
}
public unsafe void Scale()
{
var sourceFormat = new VideoFormatInfo(PixelFormat.Bgra32, 1000, 1000);
var targetFormat = new VideoFormatInfo(PixelFormat.Rgb24, 100, 100);
using (var source = new VideoFrame(sourceFormat))
using (var target = new VideoFrame(targetFormat))
using (var resampler = new VideoResampler(sourceFormat, targetFormat, SwsFlags.Lanczos))
{
Assert.Equal(300, target.Strides[0]);
var pixels = MemoryMarshal.Cast <byte, Bgra32>(source.Memory.Span);
pixels.Fill(new Bgra32(new Rgba32(1, 2, 3, 4)));
Assert.Equal(1000 * 1000 * 4, source.Memory.Length);
Assert.Equal(100 * 100 * 3, target.Memory.Length);
resampler.Resample(source, target);
int i = 0;
foreach (Rgb24 pixel in MemoryMarshal.Cast <byte, Rgb24>(target.Memory.Span))
{
if (!pixel.Equals(new Rgb24(1, 2, 3)))
{
throw new Exception($"{i} | {pixel.R},{pixel.B},{pixel.G})");
}
Assert.Equal(new Rgb24(1, 2, 3), pixel);
i++;
}
}
}
public unsafe void ChangePixelFormat()
{
var sourceFormat = new VideoFormatInfo(PixelFormat.Bgra32, 100, 100);
var targetFormat = new VideoFormatInfo(PixelFormat.Rgb24, 100, 100);
using (var source = new VideoFrame(sourceFormat))
using (var target = new VideoFrame(targetFormat))
using (var resampler = new VideoResampler(sourceFormat, targetFormat))
{
Assert.Equal(300, target.Strides[0]);
var pixels = MemoryMarshal.Cast <byte, Bgra32>(source.Memory.Span);
pixels.Fill(new Bgra32(new Rgba32(1, 2, 3, 4)));
Assert.Equal(100 * 100 * 4, source.Memory.Length);
Assert.Equal(100 * 100 * 3, target.Memory.Length);
resampler.Resample(source, target);
foreach (Rgb24 pixel in MemoryMarshal.Cast <byte, Rgb24>(target.Memory.Span))
{
Assert.Equal(new Rgb24(1, 2, 3), pixel);
}
}
}
public void StrideTest3()
{
var strides = new VideoFormatInfo(PixelFormat.Yuv410p, 800, 600).GetStrides(1);
Assert.Collection(strides,
a => Assert.Equal(800, a),
b => Assert.Equal(200, b),
c => Assert.Equal(200, c)
);
}
public static int GetVideoFormatList(ref string CameraName, out VideoFormatInfo[] VideoFormatList, out int VideoFormatCount)
{
IntPtr pVideoFormatList = IntPtr.Zero;
VideoFormatCount = 0;
int res = FSDK_GetVideoFormatList_Old(CameraName, ref pVideoFormatList, out VideoFormatCount);
VideoFormatList = new VideoFormatInfo[VideoFormatCount];
for (int i = 0; i < VideoFormatCount; ++i)
{
VideoFormatList[i] = ((VideoFormatInfo *)pVideoFormatList)[i];
}
FSDK_FreeVideoFormatList(pVideoFormatList);
return(res);
}
private static extern int FSDK_SetVideoFormat_Old([In, MarshalAs(UnmanagedType.LPWStr)]string CameraName, VideoFormatInfo VideoFormat);
public static int SetVideoFormat(ref string CameraName, VideoFormatInfo VideoFormat)
{
return FSDK_SetVideoFormat_Old(CameraName, VideoFormat);
}
public static int GetVideoFormatList(ref string CameraName, out VideoFormatInfo[] VideoFormatList, out int VideoFormatCount)
{
IntPtr pVideoFormatList = IntPtr.Zero;
VideoFormatCount = 0;
int res = FSDK_GetVideoFormatList_Old(CameraName, ref pVideoFormatList, out VideoFormatCount);
VideoFormatList = new VideoFormatInfo[VideoFormatCount];
for (int i = 0; i < VideoFormatCount; ++i){
VideoFormatList[i] = ((VideoFormatInfo*)pVideoFormatList)[i];
}
FSDK_FreeVideoFormatList(pVideoFormatList);
return res;
}
public static int SetVideoFormat(ref string CameraName, VideoFormatInfo VideoFormat)
{
return(FSDK_SetVideoFormat_Old(CameraName, VideoFormat));
}
private static extern int FSDK_SetVideoFormat_Old([In, MarshalAs(UnmanagedType.LPWStr)] string CameraName, VideoFormatInfo VideoFormat);