public void Info(string filename, int headerSize, int width, int height, ColorComponents colorComponents, bool is16bit)
{
ImageInfo?result;
var data = new byte[headerSize];
using (var stream = _assembly.OpenResourceStream(filename))
{
stream.Read(data, 0, data.Length);
}
using (var stream = new MemoryStream(data))
{
result = ImageInfo.FromStream(stream);
}
Assert.IsNotNull(result);
var info = result.Value;
Assert.AreEqual(info.Width, width);
Assert.AreEqual(info.Height, height);
Assert.AreEqual(info.ColorComponents, colorComponents);
Assert.AreEqual(info.BitsPerChannel, is16bit ? 16 : 8);
}
public static async Task <ImageInfo> GetImageInfoFrom(Stream source)
{
source = await source.CopyToSeekableStreamIfNeeded(disposeOriginalStream : true);
try {
try {
source.Seek(0, SeekOrigin.Begin);
return(ImageInfo.FromStream(source).Value);
}
catch (Exception e) { Log.w("ImageInfo.FromStream failed", e); }
source.Seek(0, SeekOrigin.Begin);
var img = ImageResult.FromStream(source);
return(new ImageInfo()
{
Width = img.Width, Height = img.Height
});
}
catch (Exception e) { Log.w("ImageResult.FromStream failed", e); }
source.Seek(0, SeekOrigin.Begin);
// ExifLib.ExifReader closes the stream on error so has to be tried last
return(GetInfoFromJpgExifReader(source));
}
private bool LoadCubemapLevel(ref Texture texture, out PixelBufferDescriptor outBuffer, out FaceOffsets outOffsets, string path, int level, string levelPrefix)
{
int size = 0;
int numLevels = 1;
outBuffer = null;
outOffsets = new FaceOffsets();
{
string faceName = levelPrefix + FaceSuffix[0] + ".rgb32f";
string facePath = Path.Combine(path, faceName);
if (!File.Exists(facePath))
{
Console.WriteLine("The face {0} does not exist", facePath);
return(false);
}
var imageInfo = ImageInfo.FromStream(File.OpenRead(facePath));
if (imageInfo.Value.Width != imageInfo.Value.Height)
{
Console.WriteLine("width != height");
return(false);
}
size = imageInfo.Value.Width;
numLevels = 1;
if (string.IsNullOrEmpty(levelPrefix))
{
numLevels = (int)MathF.Log2(size) + 1;
}
if (level == 0)
{
texture = TextureBuilder.Create()
.WithWidth(size)
.WithHeight(size)
.WithLevels(numLevels)
.WithFormat(TextureFormat.R11F_G11F_B10F)
.WithSampler(TextureSamplerType.Cubemap)
.Build(_engine);
}
}
// RGB_10_11_11_REV encoding: 4 bytes per pixel
var faceSize = size * size * Marshal.SizeOf <uint>();
FaceOffsets offsets = new FaceOffsets();
byte[] pixelBuffer = new byte[faceSize * 6];
var success = true;
for (var j = 0; j < 6; j++)
{
outOffsets[j] = faceSize * j;
string faceName = levelPrefix + FaceSuffix[j] + ".rgb32f";
string facePath = Path.Combine(path, faceName);
if (!File.Exists(facePath))
{
Console.WriteLine("The face {0} does not exist", facePath);
success = false;
break;
}
var imageResult = ImageResult.FromStream(File.OpenRead(facePath), ColorComponents.RedGreenBlueAlpha);
if (imageResult.Width != imageResult.Height || imageResult.Width != size)
{
Console.WriteLine("Face {0} has a wrong size {1}x{2}, instead of {3}x{3}", faceName, imageResult.Width, imageResult.Height, size);
success = false;
break;
}
if (imageResult.SourceComp != ColorComponents.RedGreenBlueAlpha)
{
Console.WriteLine("Could not decode face {0}", faceName);
success = false;
break;
}
Array.Copy(imageResult.Data, 0, pixelBuffer, offsets[j], imageResult.Width * imageResult.Height * Marshal.SizeOf <uint>());
}
if (!success)
{
return(false);
}
outBuffer = new PixelBufferDescriptor(pixelBuffer, PixelDataFormat.Rgb, PixelDataType.UInt_10F_11F_11F_Rev);
return(true);
}
