Author: tilman
Date: Sat Apr 7 18:33:48 2018
New Revision: 1828604
URL: http://svn.apache.org/viewvc?rev=1828604&view=rev
Log:
PDFBOX-4186: add quality option to pdfbox-app, as suggested by Martin Hausner
Modified:
pdfbox/trunk/tools/src/main/java/org/apache/pdfbox/tools/PDFToImage.java
pdfbox/trunk/tools/src/main/java/org/apache/pdfbox/tools/imageio/ImageIOUtil.java
Modified:
pdfbox/trunk/tools/src/main/java/org/apache/pdfbox/tools/PDFToImage.java
URL:
http://svn.apache.org/viewvc/pdfbox/trunk/tools/src/main/java/org/apache/pdfbox/tools/PDFToImage.java?rev=1828604&r1=1828603&r2=1828604&view=diff
==============================================================================
--- pdfbox/trunk/tools/src/main/java/org/apache/pdfbox/tools/PDFToImage.java
(original)
+++ pdfbox/trunk/tools/src/main/java/org/apache/pdfbox/tools/PDFToImage.java
Sat Apr 7 18:33:48 2018
@@ -55,6 +55,7 @@ public final class PDFToImage
private static final String COLOR = "-color";
private static final String RESOLUTION = "-resolution";
private static final String DPI = "-dpi";
+ private static final String QUALITY = "-quality";
private static final String CROPBOX = "-cropbox";
private static final String TIME = "-time";
@@ -97,6 +98,7 @@ public final class PDFToImage
int endPage = Integer.MAX_VALUE;
String color = "rgb";
int dpi;
+ float quality = 1.0f;
float cropBoxLowerLeftX = 0;
float cropBoxLowerLeftY = 0;
float cropBoxUpperRightX = 0;
@@ -166,6 +168,10 @@ public final class PDFToImage
i++;
dpi = Integer.parseInt(args[i]);
break;
+ case QUALITY:
+ i++;
+ quality = Float.parseFloat(args[i]);
+ break;
case CROPBOX:
i++;
cropBoxLowerLeftX = Float.valueOf(args[i]);
@@ -246,7 +252,7 @@ public final class PDFToImage
{
BufferedImage image = renderer.renderImageWithDPI(i, dpi,
imageType);
String fileName = outputPrefix + (i + 1) + "." +
imageFormat;
- success &= ImageIOUtil.writeImage(image, fileName, dpi);
+ success &= ImageIOUtil.writeImage(image, fileName, dpi,
quality);
}
// performance stats
@@ -282,8 +288,8 @@ public final class PDFToImage
+ " -page <number> : The only page to extract
(1-based)\n"
+ " -startPage <int> : The first page to start
extraction (1-based)\n"
+ " -endPage <int> : The last page to
extract(inclusive)\n"
- + " -color <int> : The color depth (valid:
bilevel, gray, rgb, rgba)\n"
- + " -dpi <int> : The DPI of the output
image\n"
+ + " -color <int> : The color depth (valid:
bilevel, gray, rgb (default), rgba)\n"
+ + " -quality <float> : The quality to be used
when compressing the image (0 < quality <= 1 (default))\n"
+ " -cropbox <int> <int> <int> <int> : The page area to export\n"
+ " -time : Prints timing information
to stdout\n"
+ " <inputfile> : The PDF document to use\n";
Modified:
pdfbox/trunk/tools/src/main/java/org/apache/pdfbox/tools/imageio/ImageIOUtil.java
URL:
http://svn.apache.org/viewvc/pdfbox/trunk/tools/src/main/java/org/apache/pdfbox/tools/imageio/ImageIOUtil.java?rev=1828604&r1=1828603&r2=1828604&view=diff
==============================================================================
---
pdfbox/trunk/tools/src/main/java/org/apache/pdfbox/tools/imageio/ImageIOUtil.java
(original)
+++
pdfbox/trunk/tools/src/main/java/org/apache/pdfbox/tools/imageio/ImageIOUtil.java
Sat Apr 7 18:33:48 2018
@@ -65,11 +65,30 @@ public final class ImageIOUtil
public static boolean writeImage(BufferedImage image, String filename,
int dpi) throws IOException
{
+ return writeImage(image, filename, dpi, 1.0f);
+ }
+
+ /**
+ * Writes a buffered image to a file using the given image format.
+ * See {@link #writeImage(BufferedImage image, String formatName,
+ * OutputStream output, int dpi, float quality)} for more details.
+ *
+ * @param image the image to be written
+ * @param filename used to construct the filename for the individual
image. Its suffix will be
+ * used as the image format.
+ * @param dpi the resolution in dpi (dots per inch) to be used in metadata
+ * @param quality quality to be used when compressing the image (0 <
quality < 1.0f)
+ * @return true if the image file was produced, false if there was an
error.
+ * @throws IOException if an I/O error occurs
+ */
+ public static boolean writeImage(BufferedImage image, String filename,
+ int dpi, float quality) throws IOException
+ {
File file = new File(filename);
- try
- (FileOutputStream output = new FileOutputStream(file)) {
+ try (FileOutputStream output = new FileOutputStream(file))
+ {
String formatName = filename.substring(filename.lastIndexOf('.') +
1);
- return writeImage(image, formatName, output, dpi);
+ return writeImage(image, formatName, output, dpi, quality);
}
}
