/contrib/metadata-extractor/trunk/src/com/drew/metadata/jpeg/JpegComponent.java |
---|
0,0 → 1,81 |
/* |
* This is public domain software - that is, you can do whatever you want |
* with it, and include it software that is licensed under the GNU or the |
* BSD license, or whatever other licence you choose, including proprietary |
* closed source licenses. I do ask that you leave this header in tact. |
* |
* If you make modifications to this code that you think would benefit the |
* wider community, please send me a copy and I'll post it on my site. |
* |
* If you make use of this code, I'd appreciate hearing about it. |
* drew@drewnoakes.com |
* Latest version of this software kept at |
* http://drewnoakes.com/ |
* |
* Created by dnoakes on Oct 9, 17:04:07 using IntelliJ IDEA. |
*/ |
package com.drew.metadata.jpeg; |
import com.drew.metadata.MetadataException; |
import java.io.Serializable; |
/** |
* Created by IntelliJ IDEA. |
* User: dnoakes |
* Date: 09-Oct-2003 |
* Time: 17:04:07 |
* To change this template use Options | File Templates. |
*/ |
public class JpegComponent implements Serializable |
{ |
private final int _componentId; |
private final int _samplingFactorByte; |
private final int _quantizationTableNumber; |
public JpegComponent(int componentId, int samplingFactorByte, int quantizationTableNumber) |
{ |
_componentId = componentId; |
_samplingFactorByte = samplingFactorByte; |
_quantizationTableNumber = quantizationTableNumber; |
} |
public int getComponentId() |
{ |
return _componentId; |
} |
public String getComponentName() throws MetadataException |
{ |
switch (_componentId) |
{ |
case 1: |
return "Y"; |
case 2: |
return "Cb"; |
case 3: |
return "Cr"; |
case 4: |
return "I"; |
case 5: |
return "Q"; |
} |
throw new MetadataException("Unsupported component id: " + _componentId); |
} |
public int getQuantizationTableNumber() |
{ |
return _quantizationTableNumber; |
} |
public int getHorizontalSamplingFactor() |
{ |
return _samplingFactorByte & 0x0F; |
} |
public int getVerticalSamplingFactor() |
{ |
return (_samplingFactorByte>>4) & 0x0F; |
} |
} |
/contrib/metadata-extractor/trunk/src/com/drew/metadata/jpeg/JpegReader.java |
---|
0,0 → 1,146 |
/* |
* This is public domain software - that is, you can do whatever you want |
* with it, and include it software that is licensed under the GNU or the |
* BSD license, or whatever other licence you choose, including proprietary |
* closed source licenses. I do ask that you leave this header in tact. |
* |
* If you make modifications to this code that you think would benefit the |
* wider community, please send me a copy and I'll post it on my site. |
* |
* If you make use of this code, I'd appreciate hearing about it. |
* drew@drewnoakes.com |
* Latest version of this software kept at |
* http://drewnoakes.com/ |
* |
* Created by dnoakes on Aug 2, 2003 using IntelliJ IDEA. |
*/ |
package com.drew.metadata.jpeg; |
import com.drew.imaging.jpeg.JpegProcessingException; |
import com.drew.imaging.jpeg.JpegSegmentReader; |
import com.drew.metadata.Metadata; |
import com.drew.metadata.MetadataException; |
import com.drew.metadata.MetadataReader; |
import java.io.File; |
import java.io.InputStream; |
/** |
* |
* @author Darrell Silver http://www.darrellsilver.com and Drew Noakes |
*/ |
public class JpegReader implements MetadataReader |
{ |
/** |
* The SOF0 data segment. |
*/ |
private final byte[] _data; |
/** |
* Creates a new JpegReader for the specified Jpeg jpegFile. |
*/ |
public JpegReader(File jpegFile) throws JpegProcessingException |
{ |
this(new JpegSegmentReader(jpegFile).readSegment(JpegSegmentReader.SEGMENT_SOF0)); |
} |
/** Creates a JpegReader for a JPEG stream. |
* |
* @param is JPEG stream. Stream will be closed. |
*/ |
public JpegReader(InputStream is) throws JpegProcessingException |
{ |
this(new JpegSegmentReader(is).readSegment(JpegSegmentReader.SEGMENT_APPD)); |
} |
public JpegReader(byte[] data) |
{ |
_data = data; |
} |
/** |
* Performs the Jpeg data extraction, returning a new instance of <code>Metadata</code>. |
*/ |
public Metadata extract() |
{ |
return extract(new Metadata()); |
} |
/** |
* Performs the Jpeg data extraction, adding found values to the specified |
* instance of <code>Metadata</code>. |
*/ |
public Metadata extract(Metadata metadata) |
{ |
if (_data==null) { |
return metadata; |
} |
JpegDirectory directory = (JpegDirectory)metadata.getDirectory(JpegDirectory.class); |
try { |
// data precision |
int dataPrecision = get16Bits(JpegDirectory.TAG_JPEG_DATA_PRECISION); |
directory.setInt(JpegDirectory.TAG_JPEG_DATA_PRECISION, dataPrecision); |
// process height |
int height = get32Bits(JpegDirectory.TAG_JPEG_IMAGE_HEIGHT); |
directory.setInt(JpegDirectory.TAG_JPEG_IMAGE_HEIGHT, height); |
// process width |
int width = get32Bits(JpegDirectory.TAG_JPEG_IMAGE_WIDTH); |
directory.setInt(JpegDirectory.TAG_JPEG_IMAGE_WIDTH, width); |
// number of components |
int numberOfComponents = get16Bits(JpegDirectory.TAG_JPEG_NUMBER_OF_COMPONENTS); |
directory.setInt(JpegDirectory.TAG_JPEG_NUMBER_OF_COMPONENTS, numberOfComponents); |
// 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 |
int offset = 6; |
for (int i=0; i<numberOfComponents; i++) |
{ |
int componentId = get16Bits(offset++); |
int samplingFactorByte = get16Bits(offset++); |
int quantizationTableNumber = get16Bits(offset++); |
JpegComponent component = new JpegComponent(componentId, samplingFactorByte, quantizationTableNumber); |
directory.setObject(JpegDirectory.TAG_JPEG_COMPONENT_DATA_1 + i, component); |
} |
} catch (MetadataException me) { |
directory.addError("MetadataException: " + me); |
} |
return metadata; |
} |
/** |
* Returns an int calculated from two bytes of data at the specified offset (MSB, LSB). |
* @param offset position within the data buffer to read first byte |
* @return the 32 bit int value, between 0x0000 and 0xFFFF |
*/ |
private int get32Bits(int offset) throws MetadataException |
{ |
if (offset+1>=_data.length) { |
throw new MetadataException("Attempt to read bytes from outside Jpeg segment data buffer"); |
} |
return ((_data[offset] & 255) << 8) | (_data[offset + 1] & 255); |
} |
/** |
* Returns an int calculated from one byte of data at the specified offset. |
* @param offset position within the data buffer to read byte |
* @return the 16 bit int value, between 0x00 and 0xFF |
*/ |
private int get16Bits(int offset) throws MetadataException |
{ |
if (offset>=_data.length) { |
throw new MetadataException("Attempt to read bytes from outside Jpeg segment data buffer"); |
} |
return (_data[offset] & 255); |
} |
} |
/contrib/metadata-extractor/trunk/src/com/drew/metadata/jpeg/JpegDirectory.java |
---|
0,0 → 1,111 |
/* |
* This is public domain software - that is, you can do whatever you want |
* with it, and include it software that is licensed under the GNU or the |
* BSD license, or whatever other licence you choose, including proprietary |
* closed source licenses. I do ask that you leave this header in tact. |
* |
* If you make modifications to this code that you think would benefit the |
* wider community, please send me a copy and I'll post it on my site. |
* |
* If you make use of this code, I'd appreciate hearing about it. |
* drew@drewnoakes.com |
* Latest version of this software kept at |
* http://drewnoakes.com/ |
* |
* Created on Aug 2, 2003. |
*/ |
package com.drew.metadata.jpeg; |
import com.drew.metadata.Directory; |
import com.drew.metadata.MetadataException; |
import java.util.HashMap; |
/** |
* Directory of tags and values for the SOF0 Jpeg segment. This segment holds basic metadata about the image. |
* @author Darrell Silver http://www.darrellsilver.com and Drew Noakes |
*/ |
public class JpegDirectory extends Directory { |
/** This is in bits/sample, usually 8 (12 and 16 not supported by most software). */ |
public static final int TAG_JPEG_DATA_PRECISION = 0; |
/** The image's height. Necessary for decoding the image, so it should always be there. */ |
public static final int TAG_JPEG_IMAGE_HEIGHT = 1; |
/** The image's width. Necessary for decoding the image, so it should always be there. */ |
public static final int TAG_JPEG_IMAGE_WIDTH = 3; |
/** Usually 1 = grey scaled, 3 = color YcbCr or YIQ, 4 = color CMYK |
* Each component TAG_COMPONENT_DATA_[1-4], has the following meaning: |
* component Id(1byte)(1 = Y, 2 = Cb, 3 = Cr, 4 = I, 5 = Q), |
* sampling factors (1byte) (bit 0-3 vertical., 4-7 horizontal.), |
* quantization table number (1 byte). |
* <p> |
* This info is from http://www.funducode.com/freec/Fileformats/format3/format3b.htm |
*/ |
public static final int TAG_JPEG_NUMBER_OF_COMPONENTS = 5; |
// NOTE! Component tag type int values must increment in steps of 1 |
/** the first of a possible 4 color components. Number of components specified in TAG_JPEG_NUMBER_OF_COMPONENTS.*/ |
public static final int TAG_JPEG_COMPONENT_DATA_1 = 6; |
/** the second of a possible 4 color components. Number of components specified in TAG_JPEG_NUMBER_OF_COMPONENTS.*/ |
public static final int TAG_JPEG_COMPONENT_DATA_2 = 7; |
/** the third of a possible 4 color components. Number of components specified in TAG_JPEG_NUMBER_OF_COMPONENTS.*/ |
public static final int TAG_JPEG_COMPONENT_DATA_3 = 8; |
/** the fourth of a possible 4 color components. Number of components specified in TAG_JPEG_NUMBER_OF_COMPONENTS.*/ |
public static final int TAG_JPEG_COMPONENT_DATA_4 = 9; |
protected static final HashMap tagNameMap = new HashMap(); |
static { |
tagNameMap.put(new Integer(TAG_JPEG_DATA_PRECISION), "Data Precision"); |
tagNameMap.put(new Integer(TAG_JPEG_IMAGE_WIDTH), "Image Width"); |
tagNameMap.put(new Integer(TAG_JPEG_IMAGE_HEIGHT), "Image Height"); |
tagNameMap.put(new Integer(TAG_JPEG_NUMBER_OF_COMPONENTS), "Number of Components"); |
tagNameMap.put(new Integer(TAG_JPEG_COMPONENT_DATA_1), "Component 1"); |
tagNameMap.put(new Integer(TAG_JPEG_COMPONENT_DATA_2), "Component 2"); |
tagNameMap.put(new Integer(TAG_JPEG_COMPONENT_DATA_3), "Component 3"); |
tagNameMap.put(new Integer(TAG_JPEG_COMPONENT_DATA_4), "Component 4"); |
} |
public JpegDirectory() { |
this.setDescriptor(new JpegDescriptor(this)); |
} |
public String getName() { |
return "Jpeg"; |
} |
protected HashMap getTagNameMap() { |
return tagNameMap; |
} |
/** |
* |
* @param componentNumber The zero-based index of the component. This number is normally between 0 and 3. |
* Use getNumberOfComponents for bounds-checking. |
* @return |
*/ |
public JpegComponent getComponent(int componentNumber) |
{ |
int tagType = JpegDirectory.TAG_JPEG_COMPONENT_DATA_1 + componentNumber; |
JpegComponent component = (JpegComponent)getObject(tagType); |
return component; |
} |
public int getImageWidth() throws MetadataException |
{ |
return getInt(JpegDirectory.TAG_JPEG_IMAGE_WIDTH); |
} |
public int getImageHeight() throws MetadataException |
{ |
return getInt(JpegDirectory.TAG_JPEG_IMAGE_HEIGHT); |
} |
public int getNumberOfComponents() throws MetadataException |
{ |
return getInt(JpegDirectory.TAG_JPEG_NUMBER_OF_COMPONENTS); |
} |
} |
/contrib/metadata-extractor/trunk/src/com/drew/metadata/jpeg/JpegCommentReader.java |
---|
0,0 → 1,84 |
/* |
* This is public domain software - that is, you can do whatever you want |
* with it, and include it software that is licensed under the GNU or the |
* BSD license, or whatever other licence you choose, including proprietary |
* closed source licenses. I do ask that you leave this header in tact. |
* |
* If you make modifications to this code that you think would benefit the |
* wider community, please send me a copy and I'll post it on my site. |
* |
* If you make use of this code, I'd appreciate hearing about it. |
* drew@drewnoakes.com |
* Latest version of this software kept at |
* http://drewnoakes.com/ |
* |
* Created by dnoakes on Oct 10, 2003 using IntelliJ IDEA. |
*/ |
package com.drew.metadata.jpeg; |
import com.drew.imaging.jpeg.JpegProcessingException; |
import com.drew.imaging.jpeg.JpegSegmentReader; |
import com.drew.metadata.Metadata; |
import com.drew.metadata.MetadataReader; |
import java.io.File; |
import java.io.InputStream; |
/** |
* |
* @author Drew Noakes http://drewnoakes.com |
*/ |
public class JpegCommentReader implements MetadataReader |
{ |
/** |
* The COM data segment. |
*/ |
private final byte[] _data; |
/** |
* Creates a new JpegReader for the specified Jpeg jpegFile. |
*/ |
public JpegCommentReader(File jpegFile) throws JpegProcessingException |
{ |
this(new JpegSegmentReader(jpegFile).readSegment(JpegSegmentReader.SEGMENT_COM)); |
} |
/** Creates a JpegCommentReader for a JPEG stream. |
* |
* @param is JPEG stream. Stream will be closed. |
*/ |
public JpegCommentReader(InputStream is) throws JpegProcessingException |
{ |
this(new JpegSegmentReader(is).readSegment(JpegSegmentReader.SEGMENT_APPD)); |
} |
public JpegCommentReader(byte[] data) |
{ |
_data = data; |
} |
/** |
* Performs the Jpeg data extraction, returning a new instance of <code>Metadata</code>. |
*/ |
public Metadata extract() |
{ |
return extract(new Metadata()); |
} |
/** |
* Performs the Jpeg data extraction, adding found values to the specified |
* instance of <code>Metadata</code>. |
*/ |
public Metadata extract(Metadata metadata) |
{ |
if (_data==null) { |
return metadata; |
} |
JpegCommentDirectory directory = (JpegCommentDirectory)metadata.getDirectory(JpegCommentDirectory.class); |
directory.setString(JpegCommentDirectory.TAG_JPEG_COMMENT, new String(_data)); |
return metadata; |
} |
} |
/contrib/metadata-extractor/trunk/src/com/drew/metadata/jpeg/JpegCommentDirectory.java |
---|
0,0 → 1,49 |
/* |
* This is public domain software - that is, you can do whatever you want |
* with it, and include it software that is licensed under the GNU or the |
* BSD license, or whatever other licence you choose, including proprietary |
* closed source licenses. I do ask that you leave this header in tact. |
* |
* If you make modifications to this code that you think would benefit the |
* wider community, please send me a copy and I'll post it on my site. |
* |
* If you make use of this code, I'd appreciate hearing about it. |
* drew@drewnoakes.com |
* Latest version of this software kept at |
* http://drewnoakes.com/ |
* |
* Created by dnoakes on Oct 10, 2003 using IntelliJ IDEA. |
*/ |
package com.drew.metadata.jpeg; |
import com.drew.metadata.Directory; |
import java.util.HashMap; |
/** |
* |
* @author Drew Noakes http://drewnoakes.com |
*/ |
public class JpegCommentDirectory extends Directory { |
/** This is in bits/sample, usually 8 (12 and 16 not supported by most software). */ |
public static final int TAG_JPEG_COMMENT = 0; |
protected static final HashMap tagNameMap = new HashMap(); |
static { |
tagNameMap.put(new Integer(TAG_JPEG_COMMENT), "Jpeg Comment"); |
} |
public JpegCommentDirectory() { |
this.setDescriptor(new JpegCommentDescriptor(this)); |
} |
public String getName() { |
return "JpegComment"; |
} |
protected HashMap getTagNameMap() { |
return tagNameMap; |
} |
} |
/contrib/metadata-extractor/trunk/src/com/drew/metadata/jpeg/test/JpegDescriptorTest.java |
---|
0,0 → 1,82 |
/* |
* This is public domain software - that is, you can do whatever you want |
* with it, and include it software that is licensed under the GNU or the |
* BSD license, or whatever other licence you choose, including proprietary |
* closed source licenses. I do ask that you leave this header in tact. |
* |
* If you make modifications to this code that you think would benefit the |
* wider community, please send me a copy and I'll post it on my site. |
* |
* If you make use of this code, I'd appreciate hearing about it. |
* drew@drewnoakes.com |
* Latest version of this software kept at |
* http://drewnoakes.com/ |
* |
* Created by dnoakes 09-Oct-2003 15:22:23 using IntelliJ IDEA. |
*/ |
package com.drew.metadata.jpeg.test; |
import com.drew.metadata.MetadataException; |
import com.drew.metadata.jpeg.JpegComponent; |
import com.drew.metadata.jpeg.JpegDescriptor; |
import com.drew.metadata.jpeg.JpegDirectory; |
import junit.framework.TestCase; |
/** |
* |
*/ |
public class JpegDescriptorTest extends TestCase |
{ |
private JpegDirectory _directory; |
private JpegDescriptor _descriptor; |
public JpegDescriptorTest(String s) |
{ |
super(s); |
} |
public void setUp() throws Exception |
{ |
_directory = new JpegDirectory(); |
_descriptor = new JpegDescriptor(_directory); |
} |
public void testGetComponentDataDescription_InvalidComponentNumber() throws Exception |
{ |
try { |
_descriptor.getComponentDataDescription(1); |
fail("Excepted exception"); |
} catch (MetadataException e) { |
// expect exception |
} |
} |
public void testGetImageWidthDescription() throws Exception |
{ |
_directory.setInt(JpegDirectory.TAG_JPEG_IMAGE_WIDTH, 123); |
assertEquals("123 pixels", _descriptor.getImageWidthDescription()); |
assertEquals("123 pixels", _directory.getDescription(JpegDirectory.TAG_JPEG_IMAGE_WIDTH)); |
} |
public void testGetImageHeightDescription() throws Exception |
{ |
_directory.setInt(JpegDirectory.TAG_JPEG_IMAGE_HEIGHT, 123); |
assertEquals("123 pixels", _descriptor.getImageHeightDescription()); |
assertEquals("123 pixels", _directory.getDescription(JpegDirectory.TAG_JPEG_IMAGE_HEIGHT)); |
} |
public void testGetDataPrecisionDescription() throws Exception |
{ |
_directory.setInt(JpegDirectory.TAG_JPEG_DATA_PRECISION, 8); |
assertEquals("8 bits", _descriptor.getDataPrecisionDescription()); |
assertEquals("8 bits", _directory.getDescription(JpegDirectory.TAG_JPEG_DATA_PRECISION)); |
} |
public void testGetComponentDescription() throws MetadataException |
{ |
JpegComponent component1 = new JpegComponent(1, 0x22, 0); |
_directory.setObject(JpegDirectory.TAG_JPEG_COMPONENT_DATA_1, component1); |
assertEquals("Y component: Quantization table 0, Sampling factors 2 horiz/2 vert", _directory.getDescription(JpegDirectory.TAG_JPEG_COMPONENT_DATA_1)); |
assertEquals("Y component: Quantization table 0, Sampling factors 2 horiz/2 vert", _descriptor.getComponentDataDescription(0)); |
} |
} |
/contrib/metadata-extractor/trunk/src/com/drew/metadata/jpeg/test/JpegComponentTest.java |
---|
0,0 → 1,51 |
/* |
* This is public domain software - that is, you can do whatever you want |
* with it, and include it software that is licensed under the GNU or the |
* BSD license, or whatever other licence you choose, including proprietary |
* closed source licenses. I do ask that you leave this header in tact. |
* |
* If you make modifications to this code that you think would benefit the |
* wider community, please send me a copy and I'll post it on my site. |
* |
* If you make use of this code, I'd appreciate hearing about it. |
* drew@drewnoakes.com |
* Latest version of this software kept at |
* http://drewnoakes.com/ |
* |
* Created by dnoakes on 09-Oct-2003 15:22:23 using IntelliJ IDEA. |
*/ |
package com.drew.metadata.jpeg.test; |
import com.drew.metadata.jpeg.JpegComponent; |
import junit.framework.TestCase; |
/** |
* |
*/ |
public class JpegComponentTest extends TestCase |
{ |
public JpegComponentTest(String s) |
{ |
super(s); |
} |
public void testGetComponentCharacter() throws Exception |
{ |
JpegComponent component; |
component = new JpegComponent(1,2,3); |
assertEquals("Y", component.getComponentName()); |
component = new JpegComponent(2,2,3); |
assertEquals("Cb", component.getComponentName()); |
component = new JpegComponent(3,2,3); |
assertEquals("Cr", component.getComponentName()); |
component = new JpegComponent(4,2,3); |
assertEquals("I", component.getComponentName()); |
component = new JpegComponent(5,2,3); |
assertEquals("Q", component.getComponentName()); |
} |
} |
/contrib/metadata-extractor/trunk/src/com/drew/metadata/jpeg/test/JpegReaderTest.java |
---|
0,0 → 1,150 |
/* |
* This is public domain software - that is, you can do whatever you want |
* with it, and include it software that is licensed under the GNU or the |
* BSD license, or whatever other licence you choose, including proprietary |
* closed source licenses. I do ask that you leave this header in tact. |
* |
* If you make modifications to this code that you think would benefit the |
* wider community, please send me a copy and I'll post it on my site. |
* |
* If you make use of this code, I'd appreciate hearing about it. |
* drew@drewnoakes.com |
* Latest version of this software kept at |
* http://drewnoakes.com/ |
* |
* Created by dnoakes on 09-Oct-2003 15:22:23 using IntelliJ IDEA. |
*/ |
package com.drew.metadata.jpeg.test; |
import com.drew.imaging.jpeg.JpegProcessingException; |
import com.drew.metadata.Metadata; |
import com.drew.metadata.jpeg.JpegComponent; |
import com.drew.metadata.jpeg.JpegDirectory; |
import com.drew.metadata.jpeg.JpegReader; |
import junit.framework.TestCase; |
import java.io.File; |
import java.io.FileNotFoundException; |
/** |
* |
*/ |
public class JpegReaderTest extends TestCase |
{ |
private JpegDirectory _directory; |
public JpegReaderTest(String s) |
{ |
super(s); |
} |
public void setUp() throws JpegProcessingException, FileNotFoundException |
{ |
// use a known testing image |
File jpegFile = new File("src/com/drew/metadata/jpeg/test/simple.jpg"); |
JpegReader reader = new JpegReader(jpegFile); |
Metadata metadata = reader.extract(); |
assertTrue(metadata.containsDirectory(JpegDirectory.class)); |
_directory = (JpegDirectory)metadata.getDirectory(JpegDirectory.class); |
} |
public void testExtract_Width() throws Exception |
{ |
assertEquals(800, _directory.getInt(JpegDirectory.TAG_JPEG_IMAGE_WIDTH)); |
} |
public void testExtract_Height() throws Exception |
{ |
assertEquals(600, _directory.getInt(JpegDirectory.TAG_JPEG_IMAGE_HEIGHT)); |
} |
public void testExtract_DataPrecision() throws Exception |
{ |
assertEquals(8, _directory.getInt(JpegDirectory.TAG_JPEG_DATA_PRECISION)); |
} |
public void testExtract_NumberOfComponents() throws Exception |
{ |
assertEquals(3, _directory.getInt(JpegDirectory.TAG_JPEG_NUMBER_OF_COMPONENTS)); |
} |
public void testComponentData1() throws Exception |
{ |
JpegComponent component = (JpegComponent)_directory.getObject(JpegDirectory.TAG_JPEG_COMPONENT_DATA_1); |
assertEquals("Y", component.getComponentName()); |
assertEquals(1, component.getComponentId()); |
assertEquals(0, component.getQuantizationTableNumber()); |
assertEquals(2, component.getHorizontalSamplingFactor()); |
assertEquals(2, component.getVerticalSamplingFactor()); |
} |
public void testComponentData2() throws Exception |
{ |
JpegComponent component = (JpegComponent)_directory.getObject(JpegDirectory.TAG_JPEG_COMPONENT_DATA_2); |
assertEquals("Cb", component.getComponentName()); |
assertEquals(2, component.getComponentId()); |
assertEquals(1, component.getQuantizationTableNumber()); |
assertEquals(1, component.getHorizontalSamplingFactor()); |
assertEquals(1, component.getVerticalSamplingFactor()); |
assertEquals("Cb component: Quantization table 1, Sampling factors 1 horiz/1 vert", _directory.getDescription(JpegDirectory.TAG_JPEG_COMPONENT_DATA_2)); |
} |
public void testComponentData3() throws Exception |
{ |
JpegComponent component = (JpegComponent)_directory.getObject(JpegDirectory.TAG_JPEG_COMPONENT_DATA_3); |
assertEquals("Cr", component.getComponentName()); |
assertEquals(3, component.getComponentId()); |
assertEquals(1, component.getQuantizationTableNumber()); |
assertEquals(1, component.getHorizontalSamplingFactor()); |
assertEquals(1, component.getVerticalSamplingFactor()); |
assertEquals("Cr component: Quantization table 1, Sampling factors 1 horiz/1 vert", _directory.getDescription(JpegDirectory.TAG_JPEG_COMPONENT_DATA_3)); |
} |
/* |
// this test is part of an incomplete investigation into extracting audio from JPG files |
public void testJpegWithAudio() throws Exception |
{ |
// use a known testing image |
File jpegFile = new File("src/com/drew/metadata/jpeg/test/audioPresent.jpg"); |
JpegSegmentReader jpegSegmentReader = new JpegSegmentReader(jpegFile); |
byte[] segment1Bytes = jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APP2); |
System.out.println(segment1Bytes.length); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APP1)); |
System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APP2).length); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APP3)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APP4)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APP5)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APP6)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APP7)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APP8)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APP9)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APPA)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APPB)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APPC)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APPD)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APPE)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_APPF)); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_COM)); |
System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_DHT).length); |
System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_DQT).length); |
System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_SOF0).length); |
// System.out.println(jpegSegmentReader.readSegment(JpegSegmentReader.SEGMENT_SOI)); |
// write the segment's data out to a wav file... |
File audioFile = new File("src/com/drew/metadata/jpeg/test/audio.wav"); |
FileOutputStream os = null; |
try |
{ |
os = new FileOutputStream(audioFile); |
os.write(segment1Bytes); |
} |
finally |
{ |
if (os!=null) |
os.close(); |
} |
} |
*/ |
} |
/contrib/metadata-extractor/trunk/src/com/drew/metadata/jpeg/test/simple.jpg |
---|
Cannot display: file marked as a binary type. |
svn:mime-type = application/octet-stream |
Property changes: |
Added: svn:mime-type |
+application/octet-stream |
\ No newline at end of property |
/contrib/metadata-extractor/trunk/src/com/drew/metadata/jpeg/test/JpegDirectoryTest.java |
---|
0,0 → 1,91 |
/* |
* This is public domain software - that is, you can do whatever you want |
* with it, and include it software that is licensed under the GNU or the |
* BSD license, or whatever other licence you choose, including proprietary |
* closed source licenses. I do ask that you leave this header in tact. |
* |
* If you make modifications to this code that you think would benefit the |
* wider community, please send me a copy and I'll post it on my site. |
* |
* If you make use of this code, I'd appreciate hearing about it. |
* drew@drewnoakes.com |
* Latest version of this software kept at |
* http://drewnoakes.com/ |
* |
* Created by dnoakes on 09-Oct-2003 15:22:23 using IntelliJ IDEA. |
*/ |
package com.drew.metadata.jpeg.test; |
import com.drew.metadata.jpeg.JpegComponent; |
import com.drew.metadata.jpeg.JpegDirectory; |
import junit.framework.TestCase; |
/** |
* |
*/ |
public class JpegDirectoryTest extends TestCase |
{ |
private JpegDirectory _directory; |
public JpegDirectoryTest(String s) |
{ |
super(s); |
} |
public void setUp() |
{ |
_directory = new JpegDirectory(); |
} |
public void testSetAndGetValue() throws Exception |
{ |
_directory.setInt(123, 8); |
assertEquals(8, _directory.getInt(123)); |
} |
public void testGetComponent_NotAdded() |
{ |
assertNull(_directory.getComponent(1)); |
} |
// NOTE tests for individual tag values exist in JpegReaderTest.java |
public void testGetImageWidth() throws Exception |
{ |
_directory.setInt(JpegDirectory.TAG_JPEG_IMAGE_WIDTH, 123); |
assertEquals(123, _directory.getImageWidth()); |
} |
public void testGetImageHeight() throws Exception |
{ |
_directory.setInt(JpegDirectory.TAG_JPEG_IMAGE_HEIGHT, 123); |
assertEquals(123, _directory.getImageHeight()); |
} |
public void testGetNumberOfComponents() throws Exception |
{ |
_directory.setInt(JpegDirectory.TAG_JPEG_NUMBER_OF_COMPONENTS, 3); |
assertEquals(3, _directory.getNumberOfComponents()); |
assertEquals("3", _directory.getDescription(JpegDirectory.TAG_JPEG_NUMBER_OF_COMPONENTS)); |
} |
public void testGetComponent() throws Exception |
{ |
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.TAG_JPEG_COMPONENT_DATA_1, component1); |
_directory.setObject(JpegDirectory.TAG_JPEG_COMPONENT_DATA_2, component2); |
_directory.setObject(JpegDirectory.TAG_JPEG_COMPONENT_DATA_3, component3); |
_directory.setObject(JpegDirectory.TAG_JPEG_COMPONENT_DATA_4, component4); |
// component numbers are zero-indexed for this method |
assertSame(component1, _directory.getComponent(0)); |
assertSame(component2, _directory.getComponent(1)); |
assertSame(component3, _directory.getComponent(2)); |
assertSame(component4, _directory.getComponent(3)); |
} |
} |
/contrib/metadata-extractor/trunk/src/com/drew/metadata/jpeg/JpegDescriptor.java |
---|
0,0 → 1,88 |
/* |
* This is public domain software - that is, you can do whatever you want |
* with it, and include it software that is licensed under the GNU or the |
* BSD license, or whatever other licence you choose, including proprietary |
* closed source licenses. I do ask that you leave this header in tact. |
* |
* If you make modifications to this code that you think would benefit the |
* wider community, please send me a copy and I'll post it on my site. |
* |
* If you make use of this code, I'd appreciate hearing about it. |
* drew@drewnoakes.com |
* Latest version of this software kept at |
* http://drewnoakes.com/ |
*/ |
package com.drew.metadata.jpeg; |
import com.drew.metadata.Directory; |
import com.drew.metadata.MetadataException; |
import com.drew.metadata.TagDescriptor; |
/** |
* Provides human-readable string versions of the tags stored in a JpegDirectory. |
* Thanks to Darrell Silver (www.darrellsilver.com) for the initial version of this class. |
*/ |
public class JpegDescriptor extends TagDescriptor |
{ |
public JpegDescriptor(Directory directory) |
{ |
super(directory); |
} |
public String getDescription(int tagType) throws MetadataException |
{ |
switch (tagType) |
{ |
case JpegDirectory.TAG_JPEG_COMPONENT_DATA_1: |
return getComponentDataDescription(0); |
case JpegDirectory.TAG_JPEG_COMPONENT_DATA_2: |
return getComponentDataDescription(1); |
case JpegDirectory.TAG_JPEG_COMPONENT_DATA_3: |
return getComponentDataDescription(2); |
case JpegDirectory.TAG_JPEG_COMPONENT_DATA_4: |
return getComponentDataDescription(3); |
case JpegDirectory.TAG_JPEG_DATA_PRECISION: |
return getDataPrecisionDescription(); |
case JpegDirectory.TAG_JPEG_IMAGE_HEIGHT: |
return getImageHeightDescription(); |
case JpegDirectory.TAG_JPEG_IMAGE_WIDTH: |
return getImageWidthDescription(); |
} |
return _directory.getString(tagType); |
} |
public String getImageWidthDescription() |
{ |
return _directory.getString(JpegDirectory.TAG_JPEG_IMAGE_WIDTH) + " pixels"; |
} |
public String getImageHeightDescription() |
{ |
return _directory.getString(JpegDirectory.TAG_JPEG_IMAGE_HEIGHT) + " pixels"; |
} |
public String getDataPrecisionDescription() |
{ |
return _directory.getString(JpegDirectory.TAG_JPEG_DATA_PRECISION) + " bits"; |
} |
public String getComponentDataDescription(int componentNumber) throws MetadataException |
{ |
JpegComponent component = ((JpegDirectory)_directory).getComponent(componentNumber); |
if (component==null) |
throw new MetadataException("No Jpeg component exists with number " + componentNumber); |
StringBuffer sb = new StringBuffer(); |
sb.append(component.getComponentName()); |
sb.append(" component: Quantization table "); |
sb.append(component.getQuantizationTableNumber()); |
sb.append(", Sampling factors "); |
sb.append(component.getHorizontalSamplingFactor()); |
sb.append(" horiz/"); |
sb.append(component.getVerticalSamplingFactor()); |
sb.append(" vert"); |
return sb.toString(); |
} |
} |
/contrib/metadata-extractor/trunk/src/com/drew/metadata/jpeg/JpegCommentDescriptor.java |
---|
0,0 → 1,37 |
/* |
* This is public domain software - that is, you can do whatever you want |
* with it, and include it software that is licensed under the GNU or the |
* BSD license, or whatever other licence you choose, including proprietary |
* closed source licenses. I do ask that you leave this header in tact. |
* |
* If you make modifications to this code that you think would benefit the |
* wider community, please send me a copy and I'll post it on my site. |
* |
* If you make use of this code, I'd appreciate hearing about it. |
* drew@drewnoakes.com |
* Latest version of this software kept at |
* http://drewnoakes.com/ |
* |
* Created by dnoakes on Oct 10, 2003 using IntelliJ IDEA. |
*/ |
package com.drew.metadata.jpeg; |
import com.drew.metadata.Directory; |
import com.drew.metadata.TagDescriptor; |
/** |
* |
* @author Drew Noakes http://drewnoakes.com |
*/ |
public class JpegCommentDescriptor extends TagDescriptor |
{ |
public JpegCommentDescriptor(Directory directory) |
{ |
super(directory); |
} |
public String getDescription(int tagType) |
{ |
return _directory.getString(tagType); |
} |
} |