public override bool Build(DirectShowLib.IPin source, IBuild build)
{
bool result = false;
if (Abstract.FindCaptureDeviceNameByIdentifier(this.device).NotNull())
{
DirectShowLib.IBaseFilter filter = Abstract.FindCaptureDeviceByIdentifier(this.device, false);
if (filter.NotNull() && this.SetFormat(filter))
{
if (build.Graph.AddFilter(filter, "Capture") == 0)
{
foreach (Filters.Abstract candidate in this.Next)
{
if (result = candidate.Build(filter, 0, build))
{
break;
}
}
}
else
{
Error.Log.Append(Error.Level.Debug, "Unable to open capture.", "DirectShow was unable to capture \"" + this.device + "\".");
Exception.GraphError.Check(build.Graph.RemoveFilter(filter));
}
}
}
return(result);
}
bool SetFormat(DirectShowLib.IBaseFilter filter)
{
bool result = false;
Format.Image wanted = this.Media(filter);
if (wanted.NotNull())
{
if (wanted.Resolution.NotNull())
{
DirectShowLib.AMMediaType[] media = this.GetOutputMediaTypes(filter);
if (media.NotNull())
{
for (int i = 0; i < media.Length; i++)
{
DirectShowLib.VideoInfoHeader header = Abstract.GetHeader(media[i]);
if (media[i].subType == wanted.Type &&
header.BmiHeader.Width == wanted.Resolution.Width)
{
if (header.BmiHeader.Height == wanted.Resolution.Height)
{
this.SetOutputMedia(filter, media[i]);
result = true;
break;
}
else if (wanted.ForceHeight)
{
header.BmiHeader.Height = wanted.Resolution.Height;
header.BmiHeader.ImageSize = header.BmiHeader.Width * header.BmiHeader.Height * header.BmiHeader.BitCount / 8;
header.BitRate = (int)((10000000 / header.AvgTimePerFrame) * header.BmiHeader.ImageSize * 8);
Abstract.SetHeader(media[i], header);
media[i].sampleSize = header.BmiHeader.ImageSize;
this.SetOutputMedia(filter, media[i]);
result = true;
break;
}
}
}
}
}
else
{
result = true;
}
}
return(result);
}