// Use this for initialization
void Start()
{
m_camera = OpenVR.TrackedCamera;
if (m_camera == null)
{
Debug.LogError("No camera found");
return;
}
// First get the size of a frame
uint width = 0;
uint height = 0;
uint bufferSize = 0;
EVRTrackedCameraError cameraError = m_camera.GetCameraFrameSize(0, EVRTrackedCameraFrameType.Undistorted, ref width, ref height, ref bufferSize);
if (cameraError != EVRTrackedCameraError.None)
{
Debug.LogError("Could not get frame size (error=" + cameraError + ")");
return;
}
if (width * height == 0)
{
Debug.LogError("Frame size of 0, are you sure you've enabled the camera in the SteamVR settings panel?");
return;
}
uint bitsPerPixel = bufferSize / (width * height);
m_frameBufferSize = bufferSize;
// Then get a handle to the stream
cameraError = m_camera.AcquireVideoStreamingService(0, ref m_streamHandle);
if (cameraError == EVRTrackedCameraError.None)
{
m_frameBuffer = Marshal.AllocHGlobal((int)bufferSize);
m_frameHeader = new CameraVideoStreamFrameHeader_t();
m_frameHeaderSize = (uint)Marshal.SizeOf(m_frameHeader);
if (bitsPerPixel == 3)
{
m_texture = new Texture2D((int)width, (int)height, TextureFormat.RGB24, false);
}
else if (bitsPerPixel == 4)
{
m_texture = new Texture2D((int)width, (int)height, TextureFormat.RGBA32, false);
}
// if there's some other texture format here, we simply won't be able to do anything in Update()
if (m_texture && GetComponent <Renderer>())
{
GetComponent <Renderer>().material.mainTexture = m_texture;
}
}
else
{
Debug.LogError("Could not acquire handle to stream (error=" + cameraError + ")");
}
}
public unsafe void tick()
{
if (myHandle == 0)
{
return;
}
if (TimeSource.now() > myVideoSignalTime + 2.0)
{
Warn.print("No video frames arriving");
//stopStream();
}
CameraVideoStreamFrameHeader_t frameHeader = new CameraVideoStreamFrameHeader_t();
EVRTrackedCameraError error = OpenVR.TrackedCamera.GetVideoStreamFrameBuffer(myHandle, myFrameType, IntPtr.Zero, 0, ref frameHeader, (uint)Marshal.SizeOf(frameHeader));
if (error != EVRTrackedCameraError.None)
{
Warn.print("Failed to get frame header");
return;
}
if (frameHeader.nFrameSequence == myLastFrameSequence)
{
//frame hasn't changed yet
return;
}
myVideoSignalTime = TimeSource.now();
// Frame has changed, do the more expensive frame buffer copy
fixed(byte *ptr = myFrameBuffer)
{
error = OpenVR.TrackedCamera.GetVideoStreamFrameBuffer(myHandle, myFrameType, (IntPtr)ptr, myFrameBufferSize, ref frameHeader, (uint)Marshal.SizeOf(frameHeader));
if (error != EVRTrackedCameraError.None)
{
Warn.print("Failed to get frame buffer");
return;
}
}
if (frameHeader.standingTrackedDevicePose.bPoseIsValid == true)
{
Matrix4 standingView = VR.convertToMatrix4(frameHeader.standingTrackedDevicePose.mDeviceToAbsoluteTracking);
Matrix4 seated2Standing = VR.convertToMatrix4(VR.vrSystem.GetSeatedZeroPoseToStandingAbsoluteTrackingPose());
myView = standingView * seated2Standing.Inverted();
}
invertBuffer();
//invert buffer from first pixel being top left to bottom left
myTexture.paste(myFrameFlipBuffer, Vector2.Zero, new Vector2(myFrameWidth, myFrameHeight), PixelFormat.Rgba);
}
