poppler 0.35.0

git-svn-id: svn://tug.org/texlive/trunk@38092 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 184 insertions, 0 deletions

diff --git a/Build/source/libs/poppler/poppler-0.35.0/goo/JpegWriter.cc b/Build/source/libs/poppler/poppler-0.35.0/goo/JpegWriter.cc
new file mode 100644
index 00000000000..9b7c5051838
--- /dev/null
+++ b/Build/source/libs/poppler/poppler-0.35.0/goo/JpegWriter.cc
@@ -0,0 +1,184 @@
+//========================================================================
+//
+// JpegWriter.cc
+//
+// This file is licensed under the GPLv2 or later
+//
+// Copyright (C) 2009 Stefan Thomas <thomas@eload24.com>
+// Copyright (C) 2010, 2012 Adrian Johnson <ajohnson@redneon.com>
+// Copyright (C) 2010 Harry Roberts <harry.roberts@midnight-labs.org>
+// Copyright (C) 2011 Thomas Freitag <Thomas.Freitag@alfa.de>
+// Copyright (C) 2013 Peter Breitenlohner <peb@mppmu.mpg.de>
+//
+//========================================================================
+
+#include "JpegWriter.h"
+
+#ifdef ENABLE_LIBJPEG
+
+extern "C" {
+#include <jpeglib.h>
+}
+
+#include "poppler/Error.h"
+
+struct JpegWriterPrivate {
+  bool progressive;
+  int quality;
+  JpegWriter::Format format;
+  struct jpeg_compress_struct cinfo;
+  struct jpeg_error_mgr jerr;
+};
+
+void outputMessage(j_common_ptr cinfo)
+{
+  char buffer[JMSG_LENGTH_MAX];
+
+  // Create the message
+  (*cinfo->err->format_message) (cinfo, buffer);
+
+  // Send it to poppler's error handler
+  error(errInternal, -1, "{0:s}", buffer);
+}
+
+JpegWriter::JpegWriter(int q, bool p, Format formatA)
+{
+  priv = new JpegWriterPrivate;
+  priv->progressive = p;
+  priv->quality = q;
+  priv->format = formatA;
+}
+
+JpegWriter::JpegWriter(Format formatA)
+{
+  priv = new JpegWriterPrivate;
+  priv->progressive = false;
+  priv->quality = -1;
+  priv->format = formatA;
+}
+
+JpegWriter::~JpegWriter()
+{
+  // cleanup
+  jpeg_destroy_compress(&priv->cinfo);
+  delete priv;
+}
+
+bool JpegWriter::init(FILE *f, int width, int height, int hDPI, int vDPI)
+{
+  // Setup error handler
+  priv->cinfo.err = jpeg_std_error(&priv->jerr);
+  priv->jerr.output_message = &outputMessage;
+
+  // Initialize libjpeg
+  jpeg_create_compress(&priv->cinfo);
+
+  // First set colorspace and call jpeg_set_defaults() since
+  // jpeg_set_defaults() sets default values for all fields in
+  // cinfo based on the colorspace.
+  switch (priv->format) {
+    case RGB:
+      priv->cinfo.in_color_space = JCS_RGB;
+      break;
+    case GRAY:
+      priv->cinfo.in_color_space = JCS_GRAYSCALE;
+      break;
+    case CMYK:
+      priv->cinfo.in_color_space = JCS_CMYK;
+      break;
+    default:
+      return false;
+  }
+  jpeg_set_defaults(&priv->cinfo);
+
+  // Set destination file
+  jpeg_stdio_dest(&priv->cinfo, f);
+
+  // Set libjpeg configuration
+  priv->cinfo.image_width = width;
+  priv->cinfo.image_height = height;
+  priv->cinfo.density_unit = 1; // dots per inch
+  priv->cinfo.X_density = hDPI;
+  priv->cinfo.Y_density = vDPI;
+  switch (priv->format) {
+    case GRAY:
+      priv->cinfo.input_components = 1;
+      break;
+    case RGB:
+      priv->cinfo.input_components = 3;
+      break;
+    case CMYK:
+      priv->cinfo.input_components = 4;
+      jpeg_set_colorspace(&priv->cinfo, JCS_YCCK);
+      priv->cinfo.write_JFIF_header = TRUE;
+      break;
+    default:
+      return false;
+  }
+
+  // Set quality
+  if (priv->quality >= 0 && priv->quality <= 100) {
+    jpeg_set_quality(&priv->cinfo, priv->quality, TRUE);
+  }
+
+  // Use progressive mode
+  if (priv->progressive) {
+    jpeg_simple_progression(&priv->cinfo);
+  }
+
+  // Get ready for data
+  jpeg_start_compress(&priv->cinfo, TRUE);
+
+  return true;
+}
+
+bool JpegWriter::writePointers(unsigned char **rowPointers, int rowCount)
+{
+  if (priv->format == CMYK) {
+    for (int y = 0; y < rowCount; y++) {
+      unsigned char *row = rowPointers[y];
+      for (unsigned int x = 0; x < priv->cinfo.image_width; x++) {
+	for (int n = 0; n < 4; n++) {
+	  *row = 0xff - *row;
+	  row++;
+	}
+      }
+    }
+  }
+  // Write all rows to the file
+  jpeg_write_scanlines(&priv->cinfo, rowPointers, rowCount);
+
+  return true;
+}
+
+bool JpegWriter::writeRow(unsigned char **rowPointer)
+{
+  if (priv->format == CMYK) {
+    unsigned char *row = rowPointer[0];
+    for (unsigned int x = 0; x < priv->cinfo.image_width; x++) {
+      for (int n = 0; n < 4; n++) {
+	*row = 0xff - *row;
+	row++;
+      }
+    }
+  }
+  // Write the row to the file
+  jpeg_write_scanlines(&priv->cinfo, rowPointer, 1);
+
+  return true;
+}
+
+bool JpegWriter::close()
+{
+  jpeg_finish_compress(&priv->cinfo);
+
+  return true;
+}
+
+bool JpegWriter::supportCMYK()
+{
+  return priv->format == CMYK;
+}
+
+
+#endif