public byte[] GetPicture(string devicePath, PictureSize pictureSize, Percent jpegCompressionRate)
{
var cacheKey = new PicturesCacheKey
{
DevicePath = devicePath,
PictureSize = pictureSize
};
if (!cacheValues.ContainsKey(cacheKey))
{
return(new byte[0]);
}
Console.WriteLine("GetPicture from cache");
return(cacheValues[cacheKey].Data);
}
public bool HasPicture(string devicePath, PictureSize pictureSize, Percent jpegCompressionRate)
{
var cacheKey = new PicturesCacheKey
{
DevicePath = devicePath, PictureSize = pictureSize
};
if (!cacheValues.ContainsKey(cacheKey))
{
Console.WriteLine("ContainsKey {0}", false);
return(false);
}
var value = cacheValues[cacheKey];
return(!IsExpired(value));
}
public byte[] GetVideoFrame(Percent compressionRate = default(Percent))
{
if (!IsVideoStreamOpenned)
{
return(new byte[0]);
}
if (!CanReadVideoFrame)
{
Thread.Sleep(RemainingWaitingMilliseconds);
}
var pictureBuffer = RaspberryCamInterop.ReadVideoFrame(videoStreamHandle, (uint)(100 - compressionRate.Value));
var data = new byte[pictureBuffer.Size];
Marshal.Copy(pictureBuffer.Data, data, 0, pictureBuffer.Size);
return(data);
}
public void AddPicture(string devicePath, PictureSize pictureSize, Percent jpegCompressionRate, byte[] data)
{
var cacheKey = new PicturesCacheKey
{
DevicePath = devicePath,
PictureSize = pictureSize
};
var cacheValue = new PicturesCacheValue
{
Time = DateTime.UtcNow,
Data = data
};
if (!cacheValues.ContainsKey(cacheKey))
{
cacheValues.Add(cacheKey, cacheValue);
return;
}
cacheValues[cacheKey] = cacheValue;
}
public void SavePicture(PictureSize pictureSize, string filename, Percent jpegCompressionRate = default(Percent))
{
var data = TakePicture(pictureSize, jpegCompressionRate);
File.WriteAllBytes(filename, data);
}
public bool Equals(Percent other)
{
return(value == other.value);
}
