javax.media.jai.operator
Class URLDescriptor
java.lang.Object
|
+--javax.media.jai.OperationDescriptorImpl
|
+--javax.media.jai.operator.URLDescriptor
- All Implemented Interfaces:
- OperationDescriptor, RegistryElementDescriptor, Serializable
- public class URLDescriptor
- extends OperationDescriptorImpl
An OperationDescriptor
describing the "URL" operation.
The URL operation creates an output image whose source is
specified by a Uniform Resource Locator (URL).
The allowable formats are those registered with the
com.sun.media.jai.codec.ImageCodec
class.
The second parameter contains an instance of
ImageDecodeParam
to be used during the decoding.
It may be set to null
in order to perform default
decoding, or equivalently may be omitted.
The classes in the com.sun.media.jai.codec
package are not a committed part of the JAI API. Future releases
of JAI will make use of new classes in their place. This
class will change accordingly.
Resource List
Name | Value |
GlobalName | fileload |
LocalName | fileload |
Vendor | com.sun.media.jai |
Description | Reads an image from a file. |
DocURL | http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/URLDescriptor.html |
Version | 1.0 |
arg0Desc | The path of the file to read from. |
arg1Desc | The ImageDecodeParam to use. |
Parameter List
Name | Class Type |
Default Value |
URL | java.net.URL |
NO_PARAMETER_DEFAULT |
param | com.sun.media.jai.codec.ImageDecodeParam |
null |
- See Also:
OperationDescriptor
, Serialized Form
Methods inherited from class javax.media.jai.OperationDescriptorImpl |
arePropertiesSupported, getDefaultSourceClass, getDestClass, getDestClass, getInvalidRegion, getName, getNumParameters, getNumSources, getParamClasses, getParamDefaults, getParamDefaultValue, getParameterListDescriptor, getParamMaxValue, getParamMinValue, getParamNames, getPropertyGenerators, getPropertyGenerators, getRenderableDestClass, getRenderableSourceClasses, getResourceBundle, getResources, getSourceClasses, getSourceClasses, getSourceNames, getSupportedModes, isImmediate, isModeSupported, isRenderableSupported, isRenderedSupported, makeDefaultSourceClassList, validateArguments, validateArguments, validateParameters, validateParameters, validateRenderableArguments, validateRenderableSources, validateSources, validateSources |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
URLDescriptor
public URLDescriptor()
- Constructor.
create
public static RenderedOp create(URL URL,
ImageDecodeParam param,
RenderingHints hints)
- Reads an image from a URL.
Creates a ParameterBlockJAI
from all
supplied arguments except hints
and invokes
JAI.create(String,ParameterBlock,RenderingHints)
.
- Parameters:
URL
- The URL to read from.param
- The ImageDecodeParam to use.
May be null
.hints
- The RenderingHints
to use.
May be null
.- Returns:
- The
RenderedOp
destination. - Throws:
IllegalArgumentException
- if URL
is null
.- See Also:
JAI
,
ParameterBlockJAI
,
RenderedOp