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/** ===========================================================
* @file
*
* This file is a part of kipi-plugins project
* <a href="http://www.digikam.org">http://www.digikam.org</a>
*
* Date : 2009-13-11
* Description : Helper functions for writing images
*
* Copyright (C) 2009-2010 by Patrick Spendrin <ps_ml@gmx.de>
* Copyright (C) 2007-2017 by Gilles Caulier <caulier dot gilles at gmail dot com>
*
* This program is free software; you can redistribute it
* and/or modify it under the terms of the GNU General
* Public License as published by the Free Software Foundation;
* either version 2, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* ============================================================ */
#ifndef KIPIWRITEHELP_H
#define KIPIWRITEHELP_H
// C++ includes
#include <cstdio>
// Qt includes
#include <QIODevice>
// C ANSI includes
extern "C"
{
#include <jpeglib.h>
#include <png.h>
}
namespace KXMLKipiCmd
{
/**
* a replacement function for jpeg_stdio_dest
* for convenience reasons, it uses a QIODevice instead of a QFile, but the main advantage is to not give over
* a FILE* pointer on Windows which can break due to different MS C Runtime libraries.
*
* Prepare for output to a QIODevice.
* The caller must have already opened the device, and is responsible
* for closing it after finishing compression.
*/
void kipi_jpeg_qiodevice_dest(j_compress_ptr cinfo, QIODevice* const outfile);
/**
* a replacement function for jpeg_stdio_src
* for convenience reasons, it uses a QIODevice instead of a QFile, but the main advantage is to not give over
* a FILE* pointer on Windows which can break due to different MS C Runtime libraries.
*
* Prepare for input from a QIODevice.
* The caller must have already opened the device, and is responsible
* for closing it after finishing reading.
*/
void kipi_jpeg_qiodevice_src(j_decompress_ptr cinfo, QIODevice* const infile);
/**
* a callback function for writing a png image
*/
void kipi_png_write_fn(png_structp png_ptr, png_bytep data, png_size_t length);
/**
* a callback function for flushing the buffers, currently unused, since no buffering happens
*/
void kipi_png_flush_fn(png_structp png_ptr);
/**
* To manage Errors/Warnings handling provide by libtiff
*/
void kipi_tiff_warning(const char* module, const char* format, va_list warnings);
void kipi_tiff_error(const char* module, const char* format, va_list errors);
} // namespace KXMLKipiCmd
#endif // KIPIWRITEHELP_H
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