Class PelJpegMarker

Description
Description | Methods (details) Constants (details)

Class with static methods for JPEG markers.

This class defines the constants to be used whenever one refers to a JPEG marker. All the methods defined are static, and they all operate on one argument which should be one of the class constants. They will all be denoted by PelJpegMarker in the documentation.

Located in /PelJpegMarker.php (line 54) 


	
			





	
	

		
Class Constant Summary

		

			Description |
						Constants (details)
										| 
									Methods (details)
							
					

		

			

								

					 
					APP0 = 					 0xE0

				

								

					 
					APP1 = 					 0xE1

				

								

					 
					APP2 = 					 0xE2

				

								

					 
					APP3 = 					 0xE3

				

								

					 
					APP4 = 					 0xE4

				

								

					 
					APP5 = 					 0xE5

				

								

					 
					APP6 = 					 0xE6

				

								

					 
					APP7 = 					 0xE7

				

								

					 
					APP8 = 					 0xE8

				

								

					 
					APP9 = 					 0xE9

				

								

					 
					APP10 = 					 0xEA

				

								

					 
					APP11 = 					 0xEB

				

								

					 
					APP12 = 					 0xEC

				

								

					 
					APP13 = 					 0xED

				

								

					 
					APP14 = 					 0xEE

				

								

					 
					APP15 = 					 0xEF

				

								

					 
					COM = 					 0xFE

				

								

					 
					DAC = 					 0xCC

				

								

					 
					DHP = 					 0xDE

				

								

					 
					DHT = 					 0xC4

				

								

					 
					DNL = 					 0xDC

				

								

					 
					DQT = 					 0xDB

				

								

					 
					DRI = 					 0xDD

				

								

					 
					EOI = 					 0xD9

				

								

					 
					EXP = 					 0xDF

				

								

					 
					JPG = 					 0xC8

				

								

					 
					JPG0 = 					 0xF0

				

								

					 
					JPG1 = 					 0xF1

				

								

					 
					JPG2 = 					 0xF2

				

								

					 
					JPG3 = 					 0xF3

				

								

					 
					JPG4 = 					 0xF4

				

								

					 
					JPG5 = 					 0xF5

				

								

					 
					JPG6 = 					 0xF6

				

								

					 
					JPG7 = 					 0xF7

				

								

					 
					JPG8 = 					 0xF8

				

								

					 
					JPG9 = 					 0xF9

				

								

					 
					JPG10 = 					 0xFA

				

								

					 
					JPG11 = 					 0xFB

				

								

					 
					JPG12 = 					 0xFC

				

								

					 
					JPG13 = 					 0xFD

				

								

					 
					RST0 = 					 0xD0

				

								

					 
					RST1 = 					 0xD1

				

								

					 
					RST2 = 					 0xD2

				

								

					 
					RST3 = 					 0xD3

				

								

					 
					RST4 = 					 0xD4

				

								

					 
					RST5 = 					 0xD5

				

								

					 
					RST6 = 					 0xD6

				

								

					 
					RST7 = 					 0xD7

				

								

					 
					SOF0 = 					 0xC0

				

								

					 
					SOF1 = 					 0xC1

				

								

					 
					SOF2 = 					 0xC2

				

								

					 
					SOF3 = 					 0xC3

				

								

					 
					SOF5 = 					 0xC5

				

								

					 
					SOF6 = 					 0xC6

				

								

					 
					SOF7 = 					 0xC7

				

								

					 
					SOF9 = 					 0xC9

				

								

					 
					SOF10 = 					 0xCA

				

								

					 
					SOF11 = 					 0xCB

				

								

					 
					SOF13 = 					 0xCD

				

								

					 
					SOF14 = 					 0xCE

				

								

					 
					SOF15 = 					 0xCF

				

								

					 
					SOI = 					 0xD8

				

								

					 
					SOS = 					 0xDA

				

							

		

	



	
	

		
Method Summary

		

			Description |
															Constants (details)
							
									Methods (details)
		

		
			
			

								
				

					 
											string
										getBytes
											(PelJpegMarker $m)
									

								
				

					 
											string
										getDescription
											(PelJpegMarker $m)
									

								
				

					 
											string
										getName
											(PelJpegMarker $m)
									

								
				

					 
											boolean
										isValid
											(PelJpegMarker $m)
									

							

		

	
		

	
	
	

		
Methods

		

			Description |
													Methods (details)
						
		

		

			



	
	

		
		getBytes (line 211)
	
 
	
	

Turn a JPEG marker into bytes.

	
    
				
  • return: the marker as a string.  This will be a string  with just a single byte since all JPEG markers are simply single  bytes.
    • 
				
  • static: 
    • 
			

	
	

		string
		
			getBytes
		
					(PelJpegMarker $m)
			

	
			
		
		
	




	
	

		
		getDescription (line 300)
	
 
	
	

Returns a description of a JPEG marker.

	
    
				
  • return: the description of the marker.
    • 
				
  • static: 
    • 
			

	
	

		string
		
			getDescription
		
					(PelJpegMarker $m)
			

	
			
		
		
	




	
	

		
		getName (line 223)
	
 
	
	

Return the short name for a marker.

	
    
				
  • return: the name of the marker, e.g., 'SOI' for the Start  of Image marker.
    • 
				
  • static: 
    • 
			

	
	

		string
		
			getName
		
					(PelJpegMarker $m)
			

	
			
		
		
	




	
	

		
		isValid (line 198)
	
 
	
	

Check if a byte is a valid JPEG marker.

	
    
				
  • return: if the byte is recognized true is returned,  otherwise false will be returned.
    • 
				
  • static: 
    • 
			

	
	

		boolean
		
			isValid
		
					(PelJpegMarker $m)
			

	
			
		
		
	

						
		

	


	
	

		
Class Constants

		

			Description |
										Constants (details)
						
			
										| 
									Methods (details)
							
					

		

			



	

		
		
			APP0
			 =  0xE0
			(line 121)
		
	


	

Application segment 0

	
	






	

		
		
			APP1
			 =  0xE1
			(line 130)
		
	


	

Application segment 1


When a JPEG image contains EXIF data, the data will normally be  stored in this section.  A call to PelJpeg::getSection()  with this marker as argument will then return a PelExif  object.

	
	






	

		
		
			APP2
			 =  0xE2
			(line 132)
		
	


	

Application segment 2

	
	






	

		
		
			APP3
			 =  0xE3
			(line 134)
		
	


	

Application segment 3

	
	






	

		
		
			APP4
			 =  0xE4
			(line 136)
		
	


	

Application segment 4

	
	






	

		
		
			APP5
			 =  0xE5
			(line 138)
		
	


	

Application segment 5

	
	






	

		
		
			APP6
			 =  0xE6
			(line 140)
		
	


	

Application segment 6

	
	






	

		
		
			APP7
			 =  0xE7
			(line 142)
		
	


	

Application segment 7

	
	






	

		
		
			APP8
			 =  0xE8
			(line 144)
		
	


	

Application segment 8

	
	






	

		
		
			APP9
			 =  0xE9
			(line 146)
		
	


	

Application segment 9

	
	






	

		
		
			APP10
			 =  0xEA
			(line 148)
		
	


	

Application segment 10

	
	






	

		
		
			APP11
			 =  0xEB
			(line 150)
		
	


	

Application segment 11

	
	






	

		
		
			APP12
			 =  0xEC
			(line 152)
		
	


	

Application segment 12

	
	






	

		
		
			APP13
			 =  0xED
			(line 154)
		
	


	

Application segment 13

	
	






	

		
		
			APP14
			 =  0xEE
			(line 156)
		
	


	

Application segment 14

	
	






	

		
		
			APP15
			 =  0xEF
			(line 158)
		
	


	

Application segment 15

	
	






	

		
		
			COM
			 =  0xFE
			(line 188)
		
	


	

Comment

	
	






	

		
		
			DAC
			 =  0xCC
			(line 81)
		
	


	

Define arithmetic coding conditioning

	
	






	

		
		
			DHP
			 =  0xDE
			(line 117)
		
	


	

Define hierarchical progression

	
	






	

		
		
			DHT
			 =  0xC4
			(line 65)
		
	


	

Define Huffman table

	
	






	

		
		
			DNL
			 =  0xDC
			(line 113)
		
	


	

Define number of lines

	
	






	

		
		
			DQT
			 =  0xDB
			(line 111)
		
	


	

Define quantization table

	
	






	

		
		
			DRI
			 =  0xDD
			(line 115)
		
	


	

Define restart interval

	
	






	

		
		
			EOI
			 =  0xD9
			(line 107)
		
	


	

End of image

	
	






	

		
		
			EXP
			 =  0xDF
			(line 119)
		
	


	

Expand reference component

	
	






	

		
		
			JPG
			 =  0xC8
			(line 73)
		
	


	

Extension

	
	






	

		
		
			JPG0
			 =  0xF0
			(line 160)
		
	


	

Extension 0

	
	






	

		
		
			JPG1
			 =  0xF1
			(line 162)
		
	


	

Extension 1

	
	






	

		
		
			JPG2
			 =  0xF2
			(line 164)
		
	


	

Extension 2

	
	






	

		
		
			JPG3
			 =  0xF3
			(line 166)
		
	


	

Extension 3

	
	






	

		
		
			JPG4
			 =  0xF4
			(line 168)
		
	


	

Extension 4

	
	






	

		
		
			JPG5
			 =  0xF5
			(line 170)
		
	


	

Extension 5

	
	






	

		
		
			JPG6
			 =  0xF6
			(line 172)
		
	


	

Extension 6

	
	






	

		
		
			JPG7
			 =  0xF7
			(line 174)
		
	


	

Extension 7

	
	






	

		
		
			JPG8
			 =  0xF8
			(line 176)
		
	


	

Extension 8

	
	






	

		
		
			JPG9
			 =  0xF9
			(line 178)
		
	


	

Extension 9

	
	






	

		
		
			JPG10
			 =  0xFA
			(line 180)
		
	


	

Extension 10

	
	






	

		
		
			JPG11
			 =  0xFB
			(line 182)
		
	


	

Extension 11

	
	






	

		
		
			JPG12
			 =  0xFC
			(line 184)
		
	


	

Extension 12

	
	






	

		
		
			JPG13
			 =  0xFD
			(line 186)
		
	


	

Extension 13

	
	






	

		
		
			RST0
			 =  0xD0
			(line 89)
		
	


	

Restart 0

	
	






	

		
		
			RST1
			 =  0xD1
			(line 91)
		
	


	

Restart 1

	
	






	

		
		
			RST2
			 =  0xD2
			(line 93)
		
	


	

Restart 2

	
	






	

		
		
			RST3
			 =  0xD3
			(line 95)
		
	


	

Restart 3

	
	






	

		
		
			RST4
			 =  0xD4
			(line 97)
		
	


	

Restart 4

	
	






	

		
		
			RST5
			 =  0xD5
			(line 99)
		
	


	

Restart 5

	
	






	

		
		
			RST6
			 =  0xD6
			(line 101)
		
	


	

Restart 6

	
	






	

		
		
			RST7
			 =  0xD7
			(line 103)
		
	


	

Restart 7

	
	






	

		
		
			SOF0
			 =  0xC0
			(line 57)
		
	


	

Encoding (baseline)

	
	






	

		
		
			SOF1
			 =  0xC1
			(line 59)
		
	


	

Encoding (extended sequential)

	
	






	

		
		
			SOF2
			 =  0xC2
			(line 61)
		
	


	

Encoding (progressive)

	
	






	

		
		
			SOF3
			 =  0xC3
			(line 63)
		
	


	

Encoding (lossless)

	
	






	

		
		
			SOF5
			 =  0xC5
			(line 67)
		
	


	

Encoding (differential sequential)

	
	






	

		
		
			SOF6
			 =  0xC6
			(line 69)
		
	


	

Encoding (differential progressive)

	
	






	

		
		
			SOF7
			 =  0xC7
			(line 71)
		
	


	

Encoding (differential lossless)

	
	






	

		
		
			SOF9
			 =  0xC9
			(line 75)
		
	


	

Encoding (extended sequential, arithmetic)

	
	






	

		
		
			SOF10
			 =  0xCA
			(line 77)
		
	


	

Encoding (progressive, arithmetic)

	
	






	

		
		
			SOF11
			 =  0xCB
			(line 79)
		
	


	

Encoding (lossless, arithmetic)

	
	






	

		
		
			SOF13
			 =  0xCD
			(line 83)
		
	


	

Encoding (differential sequential, arithmetic)

	
	






	

		
		
			SOF14
			 =  0xCE
			(line 85)
		
	


	

Encoding (differential progressive, arithmetic)

	
	






	

		
		
			SOF15
			 =  0xCF
			(line 87)
		
	


	

Encoding (differential lossless, arithmetic)

	
	






	

		
		
			SOI
			 =  0xD8
			(line 105)
		
	


	

Start of image

	
	






	

		
		
			SOS
			 =  0xDA
			(line 109)
		
	


	

Start of scan

	
	



						
		

	

	
	

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		Documentation generated on Fri, 18 Feb 2005 01:43:21 +0100 by phpDocumentor 1.3.0RC3