public virtual void TestGetComponentDescription()
{
JpegComponent component1 = new JpegComponent(1, unchecked((int)(0x22)), 0);
_directory.SetObject(JpegDirectory.TagComponentData1, component1);
Sharpen.Tests.AreEqual("Y component: Quantization table 0, Sampling factors 2 horiz/2 vert", _directory.GetDescription(JpegDirectory.TagComponentData1));
Sharpen.Tests.AreEqual("Y component: Quantization table 0, Sampling factors 2 horiz/2 vert", _descriptor.GetComponentDataDescription(0));
}
public virtual void Extract(sbyte[] segmentBytes, Com.Drew.Metadata.Metadata metadata, JpegSegmentType segmentType)
{
JpegDirectory directory = new JpegDirectory();
metadata.AddDirectory(directory);
// The value of TAG_COMPRESSION_TYPE is determined by the segment type found
directory.SetInt(JpegDirectory.TagCompressionType, segmentType.byteValue - JpegSegmentType.Sof0.byteValue);
SequentialReader reader = new SequentialByteArrayReader(segmentBytes);
try
{
directory.SetInt(JpegDirectory.TagDataPrecision, reader.GetUInt8());
directory.SetInt(JpegDirectory.TagImageHeight, reader.GetUInt16());
directory.SetInt(JpegDirectory.TagImageWidth, reader.GetUInt16());
short componentCount = reader.GetUInt8();
directory.SetInt(JpegDirectory.TagNumberOfComponents, componentCount);
// for each component, there are three bytes of data:
// 1 - Component ID: 1 = Y, 2 = Cb, 3 = Cr, 4 = I, 5 = Q
// 2 - Sampling factors: bit 0-3 vertical, 4-7 horizontal
// 3 - Quantization table number
for (int i = 0; i < (int)componentCount; i++)
{
int componentId = reader.GetUInt8();
int samplingFactorByte = reader.GetUInt8();
int quantizationTableNumber = reader.GetUInt8();
JpegComponent component = new JpegComponent(componentId, samplingFactorByte, quantizationTableNumber);
directory.SetObject(JpegDirectory.TagComponentData1 + i, component);
}
}
catch (IOException ex)
{
directory.AddError(ex.Message);
}
}
public virtual void Extract(sbyte[] segmentBytes, Com.Drew.Metadata.Metadata metadata, JpegSegmentType segmentType)
{
JpegDirectory directory = new JpegDirectory();
metadata.AddDirectory(directory);
// The value of TAG_COMPRESSION_TYPE is determined by the segment type found
directory.SetInt(JpegDirectory.TagCompressionType, segmentType.byteValue - JpegSegmentType.Sof0.byteValue);
SequentialReader reader = new SequentialByteArrayReader(segmentBytes);
try
{
directory.SetInt(JpegDirectory.TagDataPrecision, reader.GetUInt8());
directory.SetInt(JpegDirectory.TagImageHeight, reader.GetUInt16());
directory.SetInt(JpegDirectory.TagImageWidth, reader.GetUInt16());
short componentCount = reader.GetUInt8();
directory.SetInt(JpegDirectory.TagNumberOfComponents, componentCount);
// for each component, there are three bytes of data:
// 1 - Component ID: 1 = Y, 2 = Cb, 3 = Cr, 4 = I, 5 = Q
// 2 - Sampling factors: bit 0-3 vertical, 4-7 horizontal
// 3 - Quantization table number
for (int i = 0; i < (int)componentCount; i++)
{
int componentId = reader.GetUInt8();
int samplingFactorByte = reader.GetUInt8();
int quantizationTableNumber = reader.GetUInt8();
JpegComponent component = new JpegComponent(componentId, samplingFactorByte, quantizationTableNumber);
directory.SetObject(JpegDirectory.TagComponentData1 + i, component);
}
}
catch (IOException ex)
{
directory.AddError(ex.Message);
}
}
public virtual void TestGetComponentDescription()
{
JpegComponent component1 = new JpegComponent(1, unchecked ((int)(0x22)), 0);
_directory.SetObject(JpegDirectory.TagComponentData1, component1);
Sharpen.Tests.AreEqual("Y component: Quantization table 0, Sampling factors 2 horiz/2 vert", _directory.GetDescription(JpegDirectory.TagComponentData1));
Sharpen.Tests.AreEqual("Y component: Quantization table 0, Sampling factors 2 horiz/2 vert", _descriptor.GetComponentDataDescription(0));
}
public virtual string GetComponentDataDescription(int componentNumber)
{
JpegComponent value = _directory.GetComponent(componentNumber);
if (value == null)
{
return(null);
}
return(value.GetComponentName() + " component: Quantization table " + value.GetQuantizationTableNumber() + ", Sampling factors " + value.GetHorizontalSamplingFactor() + " horiz/" + value.GetVerticalSamplingFactor() + " vert");
}
public virtual void TestComponentData1()
{
JpegComponent component = (JpegComponent)_directory.GetObject(JpegDirectory.TagComponentData1);
NUnit.Framework.Assert.IsNotNull(component);
Sharpen.Tests.AreEqual("Y", component.GetComponentName());
Sharpen.Tests.AreEqual(1, component.GetComponentId());
Sharpen.Tests.AreEqual(0, component.GetQuantizationTableNumber());
Sharpen.Tests.AreEqual(2, component.GetHorizontalSamplingFactor());
Sharpen.Tests.AreEqual(2, component.GetVerticalSamplingFactor());
}
public virtual void TestComponentData2()
{
JpegComponent component = (JpegComponent)_directory.GetObject(JpegDirectory.TagComponentData2);
NUnit.Framework.Assert.IsNotNull(component);
Sharpen.Tests.AreEqual("Cb", component.GetComponentName());
Sharpen.Tests.AreEqual(2, component.GetComponentId());
Sharpen.Tests.AreEqual(1, component.GetQuantizationTableNumber());
Sharpen.Tests.AreEqual(1, component.GetHorizontalSamplingFactor());
Sharpen.Tests.AreEqual(1, component.GetVerticalSamplingFactor());
Sharpen.Tests.AreEqual("Cb component: Quantization table 1, Sampling factors 1 horiz/1 vert", _directory.GetDescription(JpegDirectory.TagComponentData2));
}
public virtual void TestGetComponentCharacter()
{
JpegComponent component;
component = new JpegComponent(1, 2, 3);
Sharpen.Tests.AreEqual("Y", component.GetComponentName());
component = new JpegComponent(2, 2, 3);
Sharpen.Tests.AreEqual("Cb", component.GetComponentName());
component = new JpegComponent(3, 2, 3);
Sharpen.Tests.AreEqual("Cr", component.GetComponentName());
component = new JpegComponent(4, 2, 3);
Sharpen.Tests.AreEqual("I", component.GetComponentName());
component = new JpegComponent(5, 2, 3);
Sharpen.Tests.AreEqual("Q", component.GetComponentName());
}
public virtual void TestGetComponentCharacter()
{
JpegComponent component;
component = new JpegComponent(1, 2, 3);
Sharpen.Tests.AreEqual("Y", component.GetComponentName());
component = new JpegComponent(2, 2, 3);
Sharpen.Tests.AreEqual("Cb", component.GetComponentName());
component = new JpegComponent(3, 2, 3);
Sharpen.Tests.AreEqual("Cr", component.GetComponentName());
component = new JpegComponent(4, 2, 3);
Sharpen.Tests.AreEqual("I", component.GetComponentName());
component = new JpegComponent(5, 2, 3);
Sharpen.Tests.AreEqual("Q", component.GetComponentName());
}
public virtual void TestGetComponent()
{
JpegComponent component1 = new JpegComponent(1, 2, 3);
JpegComponent component2 = new JpegComponent(1, 2, 3);
JpegComponent component3 = new JpegComponent(1, 2, 3);
JpegComponent component4 = new JpegComponent(1, 2, 3);
_directory.SetObject(JpegDirectory.TagComponentData1, component1);
_directory.SetObject(JpegDirectory.TagComponentData2, component2);
_directory.SetObject(JpegDirectory.TagComponentData3, component3);
_directory.SetObject(JpegDirectory.TagComponentData4, component4);
// component numbers are zero-indexed for this method
NUnit.Framework.Assert.AreSame(component1, _directory.GetComponent(0));
NUnit.Framework.Assert.AreSame(component2, _directory.GetComponent(1));
NUnit.Framework.Assert.AreSame(component3, _directory.GetComponent(2));
NUnit.Framework.Assert.AreSame(component4, _directory.GetComponent(3));
}
public virtual void TestGetComponent()
{
JpegComponent component1 = new JpegComponent(1, 2, 3);
JpegComponent component2 = new JpegComponent(1, 2, 3);
JpegComponent component3 = new JpegComponent(1, 2, 3);
JpegComponent component4 = new JpegComponent(1, 2, 3);
_directory.SetObject(JpegDirectory.TagComponentData1, component1);
_directory.SetObject(JpegDirectory.TagComponentData2, component2);
_directory.SetObject(JpegDirectory.TagComponentData3, component3);
_directory.SetObject(JpegDirectory.TagComponentData4, component4);
// component numbers are zero-indexed for this method
NUnit.Framework.Assert.AreSame(component1, _directory.GetComponent(0));
NUnit.Framework.Assert.AreSame(component2, _directory.GetComponent(1));
NUnit.Framework.Assert.AreSame(component3, _directory.GetComponent(2));
NUnit.Framework.Assert.AreSame(component4, _directory.GetComponent(3));
}
public virtual string GetComponentDataDescription(int componentNumber)
{
JpegComponent value = _directory.GetComponent(componentNumber);
if (value == null)
{
return(null);
}
StringBuilder sb = new StringBuilder();
sb.Append(value.GetComponentName());
sb.Append(" component: Quantization table ");
sb.Append(value.GetQuantizationTableNumber());
sb.Append(", Sampling factors ");
sb.Append(value.GetHorizontalSamplingFactor());
sb.Append(" horiz/");
sb.Append(value.GetVerticalSamplingFactor());
sb.Append(" vert");
return(sb.ToString());
}
