/// <summary>
/// Initializes a new instance of the <see cref="HeifNclxColorProfile"/> class.
/// </summary>
/// <param name="colorPrimaries">The color primaries.</param>
/// <param name="transferCharacteristics">The transfer characteristics.</param>
/// <param name="matrixCoefficients">The matrix coefficients.</param>
/// <param name="fullRange"><see langword="true"/> if the full color range is used; otherwise, <see langword="false"/>.</param>
public HeifNclxColorProfile(ColorPrimaries colorPrimaries,
TransferCharacteristics transferCharacteristics,
MatrixCoefficients matrixCoefficients,
bool fullRange) : base(ColorProfileType.Nclx)
{
this.ColorPrimaries = colorPrimaries;
this.TransferCharacteristics = transferCharacteristics;
this.MatrixCoefficients = matrixCoefficients;
this.FullRange = fullRange;
}
public int Load(byte[] buffer, int startIndex, int bufferLength)
{
// If less than 14 bytes are available for processing then the header and following start code
// can't be read.
if ((bufferLength - startIndex) < 14)
{
return(0);
}
int index = startIndex;
extensionStartCodeIdentifier = buffer[index + 4] >> 4;
videoFormat = (VideoFormat)((buffer[index + 4] & 0xE) >> 1);
colourDescription = buffer[index + 4] & 0x01;
index += 5;
if (colourDescription == 1)
{
colourPrimaries = (ColourPrimaries)(buffer[index++]);
transferCharacteristics = (TransferCharacteristics)(buffer[index++]);
matrixCoefficients = (MatrixCoefficients)(buffer[index++]);
}
displayHorizontalSize = Read16(buffer, index++) >> 2;
displayVerticalSize = (Read16(buffer, index += 2) & 0x1FFE) >> 1;
while (index < (bufferLength - 4))
{
if ((Read32(buffer, index) >> 8) == 1)
{
return(index - startIndex);
}
index++;
}
return(0);
}