Examples of javax.media.jai.tilecodec.TileDecoder

javax.media.jai.tilecodec.TileDecoder
An interface describing objects that transform an InputStream into a Raster.
This interface is designed to allow decoding of formats that include information about the format of the encoded tile as well as ones that don't. In order to create a Raster, at the very least, a Point specifying the top left corner of the Raster, a SampleModel specifying the data layout and a DataBuffer with the decoded pixel data are needed. The DataBuffer can be created from the information from the SampleModel and the decoded data. Therefore the absolute minimum information that is required in order to create a Raster on decoding (aside from the decoded data itself) is a Point specifying the top left corner of the Raster and a SampleModel specifying the data layout. The formats that do include this information should return true from the includesSampleModelInfo() and includesLocationInfo() from the associated TileCodecDescriptor if they include information needed to create a SampleModel and information needed to create the Point respectively. The formats that do not include this information in the encoded stream should return false. The TileCodecParameterList providing the decoding parameters will in this case be expected to contain a parameter named "sampleModel" with a non-null SampleModel as its value. This SampleModel will be used to create the decoded Raster.
The formats that return true from includesSampleModelInfo() should use the decode() method to cause the decoding to take place, the ones that return false should specify the Point location to the decoding process by using the decode(Point) method. Similarly the SampleModel must be specified as a parameter with a non-null value on the TileCodecParameterList passed to this TileDecoder if includesSampleModelInfo() returns false. It is expected that the SampleModel specified in the parameter list is the SampleModel of the encoded tiles, in order to get a decoded Raster that is equivalent to the one encoded. If the SampleModel specified through the parameter list is different from those of the encoded tiles, the result of decoding is undefined.
If includesSampleModelInfo() returns true, the SampleModel (if present) on the TileCodecParameterList is ignored. @see TileCodecDescriptor @see TileEncoder @since JAI 1.1

      if (codecCap != null) {
    byte ctile[] = remoteImage.getCompressedTile(id,
                   tileX,
                   tileY);
    ByteArrayInputStream stream = new ByteArrayInputStream(ctile);
    TileDecoder decoder = tdf.createDecoder(stream, tcpl);
    try {
        return decoder.decode();
    } catch (java.io.IOException ioe) {
        throw new RemoteImagingException(ImageUtil.getStackTraceString(ioe));
    }
      } else {
    // Ask for uncompressed tiles.

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      } else
    decodingParam = getTileCodecDescriptor("tileDecoder", formatName).
        getDefaultParameters("tileDecoder");
  }


        TileDecoder decoder =
            tileDecoderFactory.createDecoder(bis, decodingParam);
        try {
            return decoder.decode();
        } catch (IOException e) {
            sendExceptionToListener(JaiI18N.getString("SerializableRenderedImage16"),
                                    new ImagingException(JaiI18N.getString("SerializableRenderedImage16"), e));
//            throw new RuntimeException(e.getMessage());
        }

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        String formatName,
        InputStream input,
        TileCodecParameterList param) 
  throws IOException {
  
  TileDecoder decoder = create(registry, formatName, input, param);


  if (decoder == null) {
      return null;
  }


  return decoder.decode();
    }

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        String formatName,
        InputStream input,
        TileCodecParameterList param,
        Point location) throws IOException {


  TileDecoder decoder = create(registry, formatName, input, param);


  if (decoder == null) {
      return null;
  }


  return decoder.decode(location);
    }

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/*      */       {
/* 1247 */         this.decodingParam = getTileCodecDescriptor("tileDecoder", this.formatName).getDefaultParameters("tileDecoder");
/*      */       }
/*      */     }
/*      */ 
/* 1251 */     TileDecoder decoder = this.tileDecoderFactory.createDecoder(bis, this.decodingParam);
/*      */     try
/*      */     {
/* 1254 */       return decoder.decode();
/*      */     } catch (IOException e) {
/* 1256 */       sendExceptionToListener(JaiI18N.getString("SerializableRenderedImage16"), new ImagingException(JaiI18N.getString("SerializableRenderedImage16"), e));
/*      */     }
/*      */ 
/* 1260 */     return null;

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/*     */   }
/*     */ 
/*     */   public static Raster decode(OperationRegistry registry, String formatName, InputStream input, TileCodecParameterList param)
/*     */     throws IOException
/*     */   {
/* 459 */     TileDecoder decoder = create(registry, formatName, input, param);
/*     */ 
/* 461 */     if (decoder == null) {
/* 462 */       return null;
/*     */     }
/*     */ 
/* 465 */     return decoder.decode();
/*     */   }

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/*     */   }
/*     */ 
/*     */   public static Raster decode(OperationRegistry registry, String formatName, InputStream input, TileCodecParameterList param, Point location)
/*     */     throws IOException
/*     */   {
/* 539 */     TileDecoder decoder = create(registry, formatName, input, param);
/*     */ 
/* 541 */     if (decoder == null) {
/* 542 */       return null;
/*     */     }
/*     */ 
/* 545 */     return decoder.decode(location);
/*     */   }

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Related Classes of javax.media.jai.tilecodec.TileDecoder

com.sun.media.jai.rmi.RMIServerProxy

javax.media.jai.remote.SerializableRenderedImage

javax.media.jai.registry.TileDecoderRegistry

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