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-rw-r--r--Build/source/libs/poppler/poppler-0.18.4/goo/PNGWriter.cc176
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diff --git a/Build/source/libs/poppler/poppler-0.18.4/goo/PNGWriter.cc b/Build/source/libs/poppler/poppler-0.18.4/goo/PNGWriter.cc
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index 00000000000..1fb8cabcb54
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+++ b/Build/source/libs/poppler/poppler-0.18.4/goo/PNGWriter.cc
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+//========================================================================
+//
+// 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, 2011 Albert Astals Cid <aacid@kde.org>
+// Copyright (C) 2009 Stefan Thomas <thomas@eload24.com>
+// Copyright (C) 2010, 2011 Adrian Johnson <ajohnson@redneon.com>
+// Copyright (C) 2011 Thomas Klausner <wiz@danbala.tuwien.ac.at>
+//
+//========================================================================
+
+#include "PNGWriter.h"
+
+#ifdef ENABLE_LIBPNG
+
+#include <zlib.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "poppler/Error.h"
+#include "goo/gmem.h"
+
+PNGWriter::PNGWriter(Format formatA) : format(formatA)
+{
+ icc_data = NULL;
+ icc_data_size = 0;
+ icc_name = NULL;
+ sRGB_profile = false;
+}
+
+PNGWriter::~PNGWriter()
+{
+ /* cleanup heap allocation */
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+ if (icc_data) {
+ gfree(icc_data);
+ free(icc_name);
+ }
+}
+
+void PNGWriter::setICCProfile(const char *name, unsigned char *data, int size)
+{
+ icc_data = (unsigned char *)gmalloc(size);
+ memcpy(icc_data, data, size);
+ icc_data_size = size;
+ icc_name = strdup(name);
+}
+
+void PNGWriter::setSRGBProfile()
+{
+ sRGB_profile = true;
+}
+
+bool PNGWriter::init(FILE *f, int width, int height, int hDPI, int vDPI)
+{
+ /* libpng changed the png_set_iCCP() prototype in 1.5.0 */
+#if PNG_LIBPNG_VER < 10500
+ png_charp icc_data_ptr = (png_charp)icc_data;
+#else
+ png_const_bytep icc_data_ptr = (png_const_bytep)icc_data;
+#endif
+
+ /* 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);
+
+ // Silence silly gcc
+ png_byte bit_depth = -1;
+ png_byte color_type = -1;
+ switch (format) {
+ case RGB:
+ bit_depth = 8;
+ color_type = PNG_COLOR_TYPE_RGB;
+ break;
+ case RGBA:
+ bit_depth = 8;
+ color_type = PNG_COLOR_TYPE_RGB_ALPHA;
+ break;
+ case GRAY:
+ bit_depth = 8;
+ color_type = PNG_COLOR_TYPE_GRAY;
+ break;
+ case MONOCHROME:
+ bit_depth = 1;
+ color_type = PNG_COLOR_TYPE_GRAY;
+ break;
+ }
+ 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_set_pHYs(png_ptr, info_ptr, hDPI/0.0254, vDPI/0.0254, PNG_RESOLUTION_METER);
+
+ if (icc_data)
+ png_set_iCCP(png_ptr, info_ptr, icc_name, PNG_COMPRESSION_TYPE_BASE, icc_data_ptr, icc_data_size);
+ else if (sRGB_profile)
+ png_set_sRGB(png_ptr, info_ptr, PNG_sRGB_INTENT_RELATIVE);
+
+ png_write_info(png_ptr, info_ptr);
+ if (setjmp(png_jmpbuf(png_ptr))) {
+ error(-1, "error during writing png info bytes");
+ return false;
+ }
+
+ // pack 1 pixel/byte rows into 8 pixels/byte
+ if (format == MONOCHROME)
+ png_set_packing(png_ptr);
+
+ return true;
+}
+
+bool PNGWriter::writePointers(unsigned char **rowPointers, int rowCount)
+{
+ 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(unsigned char **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