public object GetDataFromDataBytes(byte[] bytes, ushort[,] prevFrame, int size, int startIndex)
{
var rv = new AdvStatusData();
if (size > 0)
{
byte tagValuesCount = bytes[startIndex];
startIndex++;
for (int i = 0; i < tagValuesCount; i++)
{
int tagId = bytes[startIndex];
AdvTagDefinition tagDef = m_TagDefinitions[tagId];
if (tagDef.Type == AdvTagType.UInt8)
{
byte value = bytes[startIndex + 1];
rv.TagValues[tagDef] = value.ToString();
startIndex += 2;
}
else if (tagDef.Type == AdvTagType.UInt16)
{
byte b1 = bytes[startIndex + 1];
byte b2 = bytes[startIndex + 2];
ushort value = (ushort)((b2 << 8) + b1);
rv.TagValues[tagDef] = value.ToString();
startIndex += 3;
}
else if (tagDef.Type == AdvTagType.UInt32)
{
byte b1 = bytes[startIndex + 1];
byte b2 = bytes[startIndex + 2];
byte b3 = bytes[startIndex + 3];
byte b4 = bytes[startIndex + 4];
uint value = (uint)((b4 << 24) + (b3 << 16) + (b2 << 8) + b1);
rv.TagValues[tagDef] = value.ToString();
startIndex += 5;
}
else if (tagDef.Type == AdvTagType.Real)
{
byte b1 = bytes[startIndex + 1];
byte b2 = bytes[startIndex + 2];
byte b3 = bytes[startIndex + 3];
byte b4 = bytes[startIndex + 4];
uint value = (uint)((b4 << 24) + (b3 << 16) + (b2 << 8) + b1);
IntToFloatStruct converter = new IntToFloatStruct();
converter.UInt32Value = value;
float realValue = converter.RealValue;
rv.TagValues[tagDef] = realValue.ToString();
startIndex += 5;
}
else if (tagDef.Type == AdvTagType.ULong64)
{
byte b1 = bytes[startIndex + 1];
byte b2 = bytes[startIndex + 2];
byte b3 = bytes[startIndex + 3];
byte b4 = bytes[startIndex + 4];
byte b5 = bytes[startIndex + 5];
byte b6 = bytes[startIndex + 6];
byte b7 = bytes[startIndex + 7];
byte b8 = bytes[startIndex + 8];
uint valLo = (uint)((b4 << 24) + (b3 << 16) + (b2 << 8) + b1);
uint valHi = (uint)((b8 << 24) + (b7 << 16) + (b6 << 8) + b5);
long value = (((long)valHi) << 32) + (long)valLo;
rv.TagValues[tagDef] = value.ToString();
startIndex += 9;
}
else if (tagDef.Type == AdvTagType.AnsiString254)
{
byte len = bytes[startIndex + 1];
byte[] tagValuebytes = new byte[len];
Array.Copy(bytes, startIndex + 2, tagValuebytes, 0, len);
rv.TagValues[tagDef] = Encoding.ASCII.GetString(tagValuebytes);
startIndex += 2 + len;
}
else if (tagDef.Type == AdvTagType.List16AnsiString254)
{
StringBuilder bld = new StringBuilder();
byte count = bytes[startIndex + 1];
startIndex += 2;
for (int j = 0; j < count; j++)
{
byte len = bytes[startIndex];
byte[] tagValuebytes = new byte[len];
Array.Copy(bytes, startIndex + 1, tagValuebytes, 0, len);
bld.AppendLine(Encoding.ASCII.GetString(tagValuebytes));
startIndex += 1 + len;
}
rv.TagValues[tagDef] = bld.ToString();
}
}
}
return rv;
}
public Bitmap GetFrame(int index)
{
if (index < m_AdvFile.NumberOfFrames)
{
byte layoutId;
AdvImageLayout.GetByteMode byteMode;
m_AdvFile.GetFrameImageSectionHeader(index, out layoutId, out byteMode);
AdvImageLayout layout = m_ImageSection.GetImageLayoutFromLayoutId(layoutId);
if (layout.IsDiffCorrLayout && byteMode == AdvImageLayout.GetByteMode.DiffCorrBytes && prevFrameNo != index - 1)
{
// Move back and find the nearest previous key frame
int keyFrameIdx = index;
do
{
keyFrameIdx--;
m_AdvFile.GetFrameImageSectionHeader(keyFrameIdx, out layoutId, out byteMode);
}
while (keyFrameIdx > 0 && byteMode != AdvImageLayout.GetByteMode.KeyFrameBytes);
object[] keyFrameData = m_AdvFile.GetFrameSectionData(keyFrameIdx, null);
prevFramePixels = ((AdvImageData)keyFrameData[0]).ImageData;
if (layout.DiffCorrFrame == DiffCorrFrameMode.PrevFrame)
{
for (int i = keyFrameIdx + 1; i < index; i++)
{
object[] frameData = m_AdvFile.GetFrameSectionData(i, prevFramePixels);
prevFramePixels = ((AdvImageData)frameData[0]).ImageData;
}
}
}
object[] data;
data = m_AdvFile.GetFrameSectionData(index, prevFramePixels);
AdvImageData imageData = (AdvImageData)data[0];
m_FrameStatus = (AdvStatusData)data[1];
m_MidExposureUtc = imageData.MidExposureUtc;
m_Exposure = imageData.ExposureMilliseconds;
if (prevFramePixels == null)
prevFramePixels = new ushort[m_ImageSection.Width, m_ImageSection.Height];
for (int x = 0; x < m_ImageSection.Width; x++)
for (int y = 0; y < m_ImageSection.Height; y++)
{
prevFramePixels[x, y] = imageData.ImageData[x, y];
}
prevFrameNo = index;
Bitmap rv = m_ImageSection.CreateBitmap(imageData);
return rv;
}
else
return null;
}
