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-rw-r--r--Build/source/libs/poppler/poppler-0.12.4/goo/PNGWriter.cc110
1 files changed, 110 insertions, 0 deletions
diff --git a/Build/source/libs/poppler/poppler-0.12.4/goo/PNGWriter.cc b/Build/source/libs/poppler/poppler-0.12.4/goo/PNGWriter.cc
new file mode 100644
index 00000000000..864c976bc2b
--- /dev/null
+++ b/Build/source/libs/poppler/poppler-0.12.4/goo/PNGWriter.cc
@@ -0,0 +1,110 @@
+//========================================================================
+//
+// PNGWriter.cc
+//
+// This file is licensed under the GPLv2 or later
+//
+// Copyright (C) 2009 Warren Toomey <wkt@tuhs.org>
+// Copyright (C) 2009 Shen Liang <shenzhuxi@gmail.com>
+// Copyright (C) 2009 Albert Astals Cid <aacid@kde.org>
+//
+//========================================================================
+
+#include "PNGWriter.h"
+
+#ifdef ENABLE_LIBPNG
+
+#include "poppler/Error.h"
+
+PNGWriter::PNGWriter()
+{
+}
+
+PNGWriter::~PNGWriter()
+{
+ /* cleanup heap allocation */
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+}
+
+bool PNGWriter::init(FILE *f, int width, int height)
+{
+ /* initialize stuff */
+ png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ if (!png_ptr) {
+ error(-1, "png_create_write_struct failed");
+ return false;
+ }
+
+ info_ptr = png_create_info_struct(png_ptr);
+ if (!info_ptr) {
+ error(-1, "png_create_info_struct failed");
+ return false;
+ }
+
+ if (setjmp(png_jmpbuf(png_ptr))) {
+ error(-1, "png_jmpbuf failed");
+ return false;
+ }
+
+ /* write header */
+ png_init_io(png_ptr, f);
+ if (setjmp(png_jmpbuf(png_ptr))) {
+ error(-1, "Error during writing header");
+ return false;
+ }
+
+ // Set up the type of PNG image and the compression level
+ png_set_compression_level(png_ptr, Z_BEST_COMPRESSION);
+
+ png_byte bit_depth = 8;
+ png_byte color_type = PNG_COLOR_TYPE_RGB;
+ png_byte interlace_type = PNG_INTERLACE_NONE;
+
+ png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, color_type, interlace_type, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
+
+ png_write_info(png_ptr, info_ptr);
+ if (setjmp(png_jmpbuf(png_ptr))) {
+ error(-1, "error during writing png info bytes");
+ return false;
+ }
+
+ return true;
+}
+
+bool PNGWriter::writePointers(png_bytep *rowPointers)
+{
+ png_write_image(png_ptr, rowPointers);
+ /* write bytes */
+ if (setjmp(png_jmpbuf(png_ptr))) {
+ error(-1, "Error during writing bytes");
+ return false;
+ }
+
+ return true;
+}
+
+bool PNGWriter::writeRow(png_bytep *row)
+{
+ // Write the row to the file
+ png_write_rows(png_ptr, row, 1);
+ if (setjmp(png_jmpbuf(png_ptr))) {
+ error(-1, "error during png row write");
+ return false;
+ }
+
+ return true;
+}
+
+bool PNGWriter::close()
+{
+ /* end write */
+ png_write_end(png_ptr, info_ptr);
+ if (setjmp(png_jmpbuf(png_ptr))) {
+ error(-1, "Error during end of write");
+ return false;
+ }
+
+ return true;
+}
+
+#endif