| public static Decode ( Array, jpg, int &width, int &height ) : byte[] | ||
| jpg | Array, | |
| width | int | |
| height | int | |
| return | byte[] | |
public void ImageFormat_EncodeJPG_DecodeJPG_ProducesSimilarData()
{
const int kDimension = 64;
const int kLength = kDimension * kDimension;
const int kDeviation = 3;
var color = new Color32((byte)UnityEngine.Random.Range(0, 255), (byte)UnityEngine.Random.Range(0, 255), (byte)UnityEngine.Random.Range(0, 255), 255);
var data = ArrayUtilities.Allocate <Color32>(kLength);
for (var i = 0; i < kLength; ++i)
{
data[i] = color;
}
var encoded = JpegEncoder.Encode(ArrayUtilities.Cast <byte>(data), kDimension, kDimension, (int)GraphicsFormatUtility.GetBlockSize(GraphicsFormat.R8G8B8A8_UNorm), GraphicsFormat.R8G8B8A8_UNorm);
int width = 0, height = 0;
var decoded = ArrayUtilities.Cast <Color32>(JpegEncoder.Decode(encoded, ref width, ref height));
Debug.Assert(width == kDimension && height == kDimension);
Debug.Assert(ArrayUtilities.Count <Color32>(data) == ArrayUtilities.Count <Color32>(decoded));
int count = 0;
for (var i = 0; i < kLength; ++i)
{
int rd = Math.Abs((int)data[i].r - (int)decoded[i].r);
int gd = Math.Abs((int)data[i].g - (int)decoded[i].g);
int bd = Math.Abs((int)data[i].b - (int)decoded[i].b);
int ad = Math.Abs((int)data[i].a - (int)decoded[i].a);
if (rd > kDeviation || gd > kDeviation || bd > kDeviation || ad > kDeviation)
{
++count;
}
}
Debug.AssertFormat(count == 0, "{0} pixels had deviation of {1} or more from original data.", count, kDeviation);
}