/// <summary>
/// TextureReader callback handler.
/// </summary>
/// <param name="format">The format of the image.</param>
/// <param name="width">Width of the image, in pixels.</param>
/// <param name="height">Height of the image, in pixels.</param>
/// <param name="pixelBuffer">Pointer to raw image buffer.</param>
/// <param name="bufferSize">The size of the image buffer, in bytes.</param>
public void OnImageAvailable(TextureReaderApi.ImageFormatType format, int width, int height, IntPtr pixelBuffer, int bufferSize)
{
if (format != TextureReaderApi.ImageFormatType.ImageFormatGrayscale)
{
Debug.Log("No edge detected due to incorrect image format.");
return;
}
if (m_TextureToRender == null || m_EdgeImage == null || m_ImageWidth != width || m_ImageHeight != height)
{
m_TextureToRender = new Texture2D(width, height, TextureFormat.R8, false, false);
m_EdgeImage = new byte[width * height];
m_ImageWidth = width;
m_ImageHeight = height;
}
// Detect edges within the image.
if (EdgeDetector.Detect(m_EdgeImage, pixelBuffer, width, height))
{
// Update the rendering texture with the edge image.
m_TextureToRender.LoadRawTextureData(m_EdgeImage);
m_TextureToRender.Apply();
BackgroundRenderer.BackgroundMaterial.SetTexture("_ImageTex", m_TextureToRender);
}
}
/// <summary>
/// Handles a new CPU image.
/// </summary>
/// <param name="format">The format of the image.</param>
/// <param name="width">Width of the image, in pixels.</param>
/// <param name="height">Height of the image, in pixels.</param>
/// <param name="pixelBuffer">Pointer to raw image buffer.</param>
/// <param name="bufferSize">The size of the image buffer, in bytes.</param>
private void _OnImageAvailable(TextureReaderApi.ImageFormatType format, int width, int height, IntPtr pixelBuffer, int bufferSize)
{
if (format != TextureReaderApi.ImageFormatType.ImageFormatGrayscale)
{
Debug.Log("No edge detected due to incorrect image format.");
return;
}
if (m_EdgeDetectionBackgroundTexture == null || m_EdgeDetectionResultImage == null ||
m_EdgeDetectionBackgroundTexture.width != width || m_EdgeDetectionBackgroundTexture.height != height)
{
m_EdgeDetectionBackgroundTexture = new Texture2D(width, height, TextureFormat.R8, false, false);
m_EdgeDetectionResultImage = new byte[width * height];
_UpdateCameraImageToDisplayUVs();
}
if (m_CachedOrientation != Screen.orientation || m_CachedScreenDimensions.x != Screen.width ||
m_CachedScreenDimensions.y != Screen.height)
{
_UpdateCameraImageToDisplayUVs();
m_CachedOrientation = Screen.orientation;
m_CachedScreenDimensions = new Vector2(Screen.width, Screen.height);
}
// Detect edges within the image.
if (EdgeDetector.Detect(m_EdgeDetectionResultImage, pixelBuffer, width, height))
{
// Update the rendering texture with the edge image.
m_EdgeDetectionBackgroundTexture.LoadRawTextureData(m_EdgeDetectionResultImage);
m_EdgeDetectionBackgroundTexture.Apply();
EdgeDetectionBackgroundImage.material.SetTexture("_ImageTex", m_EdgeDetectionBackgroundTexture);
const string TOP_LEFT_RIGHT = "_UvTopLeftRight";
const string BOTTOM_LEFT_RIGHT = "_UvBottomLeftRight";
EdgeDetectionBackgroundImage.material.SetVector(TOP_LEFT_RIGHT, new Vector4(
m_CameraImageToDisplayUvTransformation.TopLeft.x,
m_CameraImageToDisplayUvTransformation.TopLeft.y,
m_CameraImageToDisplayUvTransformation.TopRight.x,
m_CameraImageToDisplayUvTransformation.TopRight.y));
EdgeDetectionBackgroundImage.material.SetVector(BOTTOM_LEFT_RIGHT, new Vector4(
m_CameraImageToDisplayUvTransformation.BottomLeft.x,
m_CameraImageToDisplayUvTransformation.BottomLeft.y,
m_CameraImageToDisplayUvTransformation.BottomRight.x,
m_CameraImageToDisplayUvTransformation.BottomRight.y));
}
}
