536 lines
19 KiB
C++
536 lines
19 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2015 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#ifndef MAPNIK_TIFF_IO_HPP
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#define MAPNIK_TIFF_IO_HPP
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#include <mapnik/global.hpp>
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#include <mapnik/image_util.hpp>
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#include <mapnik/image_any.hpp>
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#include <mapnik/util/variant.hpp>
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#pragma GCC diagnostic push
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#include <mapnik/warning_ignore.hpp>
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extern "C"
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{
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#include <tiffio.h>
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#define RealTIFFOpen TIFFClientOpen
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#define RealTIFFClose TIFFClose
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}
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#pragma GCC diagnostic pop
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//std
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#include <memory>
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#define TIFF_WRITE_SCANLINE 0
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#define TIFF_WRITE_STRIPPED 1
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#define TIFF_WRITE_TILED 2
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namespace mapnik {
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static inline tsize_t tiff_write_proc(thandle_t fd, tdata_t buf, tsize_t size)
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{
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std::ostream* out = reinterpret_cast<std::ostream*>(fd);
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std::ios::pos_type pos = out->tellp();
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std::streamsize request_size = size;
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if (static_cast<tsize_t>(request_size) != size)
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return static_cast<tsize_t>(-1);
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out->write(reinterpret_cast<const char*>(buf), size);
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if( static_cast<std::streamsize>(pos) == -1 )
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{
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return size;
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}
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else
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{
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return static_cast<tsize_t>(out->tellp()-pos);
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}
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}
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static inline toff_t tiff_seek_proc(thandle_t fd, toff_t off, int whence)
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{
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std::ostream* out = reinterpret_cast<std::ostream*>(fd);
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if( out->fail() )
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return static_cast<toff_t>(-1);
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if( static_cast<std::streamsize>(out->tellp()) == -1)
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return static_cast< toff_t >( 0 );
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switch(whence)
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{
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case SEEK_SET:
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out->seekp(off, std::ios_base::beg);
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break;
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case SEEK_CUR:
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out->seekp(off, std::ios_base::cur);
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break;
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case SEEK_END:
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out->seekp(off, std::ios_base::end);
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break;
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}
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// grow std::stringstream buffer (re: libtiff/tif_stream.cxx)
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std::ios::pos_type pos = out->tellp();
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// second check needed for clang (libcxx doesn't set failbit when seeking beyond the current buffer size
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if( out->fail() || static_cast<std::streamoff>(off) != pos)
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{
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std::ios::iostate old_state;
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std::ios::pos_type origin;
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old_state = out->rdstate();
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// reset the fail bit or else tellp() won't work below
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out->clear(out->rdstate() & ~std::ios::failbit);
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switch( whence )
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{
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case SEEK_SET:
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default:
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origin = 0L;
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break;
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case SEEK_CUR:
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origin = out->tellp();
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break;
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case SEEK_END:
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out->seekp(0, std::ios::end);
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origin = out->tellp();
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break;
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}
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// restore original stream state
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out->clear(old_state);
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// only do something if desired seek position is valid
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if( (static_cast<uint64_t>(origin) + off) > 0L)
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{
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uint64_t num_fill;
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// clear the fail bit
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out->clear(out->rdstate() & ~std::ios::failbit);
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// extend the stream to the expected size
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out->seekp(0, std::ios::end);
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num_fill = (static_cast<uint64_t>(origin)) + off - out->tellp();
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for( uint64_t i = 0; i < num_fill; ++i)
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out->put('\0');
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// retry the seek
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out->seekp(static_cast<std::ios::off_type>(static_cast<uint64_t>(origin) + off), std::ios::beg);
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}
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}
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return static_cast<toff_t>(out->tellp());
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}
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static inline int tiff_close_proc(thandle_t fd)
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{
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std::ostream* out = (std::ostream*)fd;
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out->flush();
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return 0;
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}
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static inline toff_t tiff_size_proc(thandle_t fd)
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{
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std::ostream* out = reinterpret_cast<std::ostream*>(fd);
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std::ios::pos_type pos = out->tellp();
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out->seekp(0, std::ios::end);
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std::ios::pos_type len = out->tellp();
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out->seekp(pos);
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return static_cast<toff_t>(len);
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}
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static inline tsize_t tiff_dummy_read_proc(thandle_t , tdata_t , tsize_t)
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{
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return 0;
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}
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static inline void tiff_dummy_unmap_proc(thandle_t , tdata_t , toff_t) {}
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static inline int tiff_dummy_map_proc(thandle_t , tdata_t*, toff_t* )
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{
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return 0;
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}
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struct tiff_config
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{
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tiff_config()
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: compression(COMPRESSION_ADOBE_DEFLATE),
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zlevel(4),
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tile_width(0),
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tile_height(0),
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rows_per_strip(0),
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method(TIFF_WRITE_STRIPPED) {}
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int compression;
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int zlevel;
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int tile_width; // Tile width of zero means tile the width of the image
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int tile_height; // Tile height of zero means tile the height of the image
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int rows_per_strip;
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int method; // The method to use to write the TIFF.
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};
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struct tag_setter
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{
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tag_setter(TIFF * output, tiff_config const& config)
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: output_(output),
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config_(config) {}
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template <typename T>
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void operator() (T const&) const
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{
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// Assume this would be null type
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throw image_writer_exception("Could not write TIFF - unknown image type provided");
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}
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inline void operator() (image_rgba8 const& data) const
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{
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TIFFSetField(output_, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
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TIFFSetField(output_, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
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TIFFSetField(output_, TIFFTAG_BITSPERSAMPLE, 8);
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TIFFSetField(output_, TIFFTAG_SAMPLESPERPIXEL, 4);
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if (data.get_premultiplied())
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{
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uint16 extras[] = { EXTRASAMPLE_ASSOCALPHA };
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TIFFSetField(output_, TIFFTAG_EXTRASAMPLES, 1, extras);
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}
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else
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{
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uint16 extras[] = { EXTRASAMPLE_UNASSALPHA };
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TIFFSetField(output_, TIFFTAG_EXTRASAMPLES, 1, extras);
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}
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if (config_.compression == COMPRESSION_DEFLATE
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|| config_.compression == COMPRESSION_ADOBE_DEFLATE
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|| config_.compression == COMPRESSION_LZW)
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{
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TIFFSetField(output_, TIFFTAG_PREDICTOR, PREDICTOR_HORIZONTAL);
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}
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}
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inline void operator() (image_gray64 const&) const
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{
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TIFFSetField(output_, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
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TIFFSetField(output_, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
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TIFFSetField(output_, TIFFTAG_BITSPERSAMPLE, 64);
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TIFFSetField(output_, TIFFTAG_SAMPLESPERPIXEL, 1);
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if (config_.compression == COMPRESSION_DEFLATE
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|| config_.compression == COMPRESSION_ADOBE_DEFLATE
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|| config_.compression == COMPRESSION_LZW)
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{
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TIFFSetField(output_, TIFFTAG_PREDICTOR, PREDICTOR_HORIZONTAL);
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}
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}
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inline void operator() (image_gray64s const&) const
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{
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TIFFSetField(output_, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
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TIFFSetField(output_, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_INT);
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TIFFSetField(output_, TIFFTAG_BITSPERSAMPLE, 64);
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TIFFSetField(output_, TIFFTAG_SAMPLESPERPIXEL, 1);
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if (config_.compression == COMPRESSION_DEFLATE
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|| config_.compression == COMPRESSION_ADOBE_DEFLATE
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|| config_.compression == COMPRESSION_LZW)
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{
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TIFFSetField(output_, TIFFTAG_PREDICTOR, PREDICTOR_HORIZONTAL);
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}
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}
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inline void operator() (image_gray64f const&) const
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{
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TIFFSetField(output_, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
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TIFFSetField(output_, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_IEEEFP);
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TIFFSetField(output_, TIFFTAG_BITSPERSAMPLE, 64);
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TIFFSetField(output_, TIFFTAG_SAMPLESPERPIXEL, 1);
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if (config_.compression == COMPRESSION_DEFLATE
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|| config_.compression == COMPRESSION_ADOBE_DEFLATE
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|| config_.compression == COMPRESSION_LZW)
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{
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TIFFSetField(output_, TIFFTAG_PREDICTOR, PREDICTOR_FLOATINGPOINT);
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}
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}
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inline void operator() (image_gray32 const&) const
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{
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TIFFSetField(output_, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
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TIFFSetField(output_, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
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TIFFSetField(output_, TIFFTAG_BITSPERSAMPLE, 32);
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TIFFSetField(output_, TIFFTAG_SAMPLESPERPIXEL, 1);
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if (config_.compression == COMPRESSION_DEFLATE
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|| config_.compression == COMPRESSION_ADOBE_DEFLATE
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|| config_.compression == COMPRESSION_LZW)
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{
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TIFFSetField(output_, TIFFTAG_PREDICTOR, PREDICTOR_HORIZONTAL);
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}
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}
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inline void operator() (image_gray32s const&) const
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{
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TIFFSetField(output_, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
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TIFFSetField(output_, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_INT);
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TIFFSetField(output_, TIFFTAG_BITSPERSAMPLE, 32);
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TIFFSetField(output_, TIFFTAG_SAMPLESPERPIXEL, 1);
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if (config_.compression == COMPRESSION_DEFLATE
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|| config_.compression == COMPRESSION_ADOBE_DEFLATE
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|| config_.compression == COMPRESSION_LZW)
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{
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TIFFSetField(output_, TIFFTAG_PREDICTOR, PREDICTOR_HORIZONTAL);
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}
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}
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inline void operator() (image_gray32f const&) const
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{
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TIFFSetField(output_, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
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TIFFSetField(output_, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_IEEEFP);
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TIFFSetField(output_, TIFFTAG_BITSPERSAMPLE, 32);
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TIFFSetField(output_, TIFFTAG_SAMPLESPERPIXEL, 1);
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if (config_.compression == COMPRESSION_DEFLATE
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|| config_.compression == COMPRESSION_ADOBE_DEFLATE
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|| config_.compression == COMPRESSION_LZW)
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{
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TIFFSetField(output_, TIFFTAG_PREDICTOR, PREDICTOR_FLOATINGPOINT);
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}
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}
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inline void operator() (image_gray16 const&) const
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{
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TIFFSetField(output_, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
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TIFFSetField(output_, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
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TIFFSetField(output_, TIFFTAG_BITSPERSAMPLE, 16);
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TIFFSetField(output_, TIFFTAG_SAMPLESPERPIXEL, 1);
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if (config_.compression == COMPRESSION_DEFLATE
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|| config_.compression == COMPRESSION_ADOBE_DEFLATE
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|| config_.compression == COMPRESSION_LZW)
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{
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TIFFSetField(output_, TIFFTAG_PREDICTOR, PREDICTOR_HORIZONTAL);
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}
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}
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inline void operator() (image_gray16s const&) const
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{
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TIFFSetField(output_, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
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TIFFSetField(output_, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_INT);
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TIFFSetField(output_, TIFFTAG_BITSPERSAMPLE, 16);
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TIFFSetField(output_, TIFFTAG_SAMPLESPERPIXEL, 1);
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if (config_.compression == COMPRESSION_DEFLATE
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|| config_.compression == COMPRESSION_ADOBE_DEFLATE
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|| config_.compression == COMPRESSION_LZW)
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{
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TIFFSetField(output_, TIFFTAG_PREDICTOR, PREDICTOR_HORIZONTAL);
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}
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}
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inline void operator() (image_gray8 const&) const
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{
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TIFFSetField(output_, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
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TIFFSetField(output_, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_UINT);
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TIFFSetField(output_, TIFFTAG_BITSPERSAMPLE, 8);
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TIFFSetField(output_, TIFFTAG_SAMPLESPERPIXEL, 1);
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if (config_.compression == COMPRESSION_DEFLATE
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|| config_.compression == COMPRESSION_ADOBE_DEFLATE
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|| config_.compression == COMPRESSION_LZW)
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{
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TIFFSetField(output_, TIFFTAG_PREDICTOR, PREDICTOR_HORIZONTAL);
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}
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}
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inline void operator() (image_gray8s const&) const
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{
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TIFFSetField(output_, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
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TIFFSetField(output_, TIFFTAG_SAMPLEFORMAT, SAMPLEFORMAT_INT);
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TIFFSetField(output_, TIFFTAG_BITSPERSAMPLE, 8);
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TIFFSetField(output_, TIFFTAG_SAMPLESPERPIXEL, 1);
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if (config_.compression == COMPRESSION_DEFLATE
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|| config_.compression == COMPRESSION_ADOBE_DEFLATE
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|| config_.compression == COMPRESSION_LZW)
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{
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TIFFSetField(output_, TIFFTAG_PREDICTOR, PREDICTOR_HORIZONTAL);
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}
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}
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inline void operator() (image_null const&) const
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{
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// Assume this would be null type
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throw image_writer_exception("Could not write TIFF - Null image provided");
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}
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private:
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TIFF * output_;
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tiff_config const& config_;
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};
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inline void set_tiff_config(TIFF* output, tiff_config const& config)
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{
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// Set some constant tiff information that doesn't vary based on type of data
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// or image size
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TIFFSetField(output, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
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// Set the compression for the TIFF
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TIFFSetField(output, TIFFTAG_COMPRESSION, config.compression);
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if (COMPRESSION_ADOBE_DEFLATE == config.compression
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|| COMPRESSION_DEFLATE == config.compression
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|| COMPRESSION_LZW == config.compression)
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{
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// Set the zip level for the compression
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// http://en.wikipedia.org/wiki/DEFLATE#Encoder.2Fcompressor
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// Changes the time spent trying to compress
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TIFFSetField(output, TIFFTAG_ZIPQUALITY, config.zlevel);
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}
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}
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template <typename T1, typename T2>
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void save_as_tiff(T1 & file, T2 const& image, tiff_config const& config)
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{
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using pixel_type = typename T2::pixel_type;
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const int width = image.width();
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const int height = image.height();
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TIFF* output = RealTIFFOpen("mapnik_tiff_stream",
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"wm",
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(thandle_t)&file,
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tiff_dummy_read_proc,
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tiff_write_proc,
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tiff_seek_proc,
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tiff_close_proc,
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tiff_size_proc,
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tiff_dummy_map_proc,
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tiff_dummy_unmap_proc);
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if (! output)
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{
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throw image_writer_exception("Could not write TIFF");
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}
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TIFFSetField(output, TIFFTAG_IMAGEWIDTH, width);
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TIFFSetField(output, TIFFTAG_IMAGELENGTH, height);
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TIFFSetField(output, TIFFTAG_IMAGEDEPTH, 1);
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set_tiff_config(output, config);
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// Set tags that vary based on the type of data being provided.
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tag_setter set(output, config);
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set(image);
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// Use specific types of writing methods.
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if (TIFF_WRITE_SCANLINE == config.method)
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{
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// Process Scanline
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TIFFSetField(output, TIFFTAG_ROWSPERSTRIP, 1);
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int next_scanline = 0;
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std::unique_ptr<pixel_type[]> row (new pixel_type[width]);
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while (next_scanline < height)
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{
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std::copy(image.get_row(next_scanline), image.get_row(next_scanline) + width, row.get());
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TIFFWriteScanline(output, row.get(), next_scanline, 0);
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++next_scanline;
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}
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}
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else if (TIFF_WRITE_STRIPPED == config.method)
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{
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std::size_t rows_per_strip = config.rows_per_strip;
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if (0 == rows_per_strip)
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{
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rows_per_strip = height;
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}
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TIFFSetField(output, TIFFTAG_ROWSPERSTRIP, rows_per_strip);
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std::size_t strip_size = width * rows_per_strip;
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std::unique_ptr<pixel_type[]> strip_buffer(new pixel_type[strip_size]);
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for (int y=0; y < height; y+=rows_per_strip)
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{
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int ty1 = std::min(height, static_cast<int>(y + rows_per_strip)) - y;
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int row = y;
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for (int ty = 0; ty < ty1; ++ty, ++row)
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{
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std::copy(image.get_row(row), image.get_row(row) + width, strip_buffer.get() + ty * width);
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}
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if (TIFFWriteEncodedStrip(output, TIFFComputeStrip(output, y, 0), strip_buffer.get(), strip_size * sizeof(pixel_type)) == -1)
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{
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throw image_writer_exception("Could not write TIFF - TIFF Tile Write failed");
|
|
}
|
|
}
|
|
}
|
|
else if (TIFF_WRITE_TILED == config.method)
|
|
{
|
|
int tile_width = config.tile_width;
|
|
int tile_height = config.tile_height;
|
|
|
|
if (0 == tile_height)
|
|
{
|
|
tile_height = height;
|
|
if (height % 16 > 0)
|
|
{
|
|
tile_height = height + 16 - (height % 16);
|
|
}
|
|
}
|
|
if (0 == tile_width)
|
|
{
|
|
tile_width = width;
|
|
if (width % 16 > 0)
|
|
{
|
|
tile_width = width + 16 - (width % 16);
|
|
}
|
|
}
|
|
TIFFSetField(output, TIFFTAG_TILEWIDTH, tile_width);
|
|
TIFFSetField(output, TIFFTAG_TILELENGTH, tile_height);
|
|
TIFFSetField(output, TIFFTAG_TILEDEPTH, 1);
|
|
std::size_t tile_size = tile_width * tile_height;
|
|
std::unique_ptr<pixel_type[]> image_out (new pixel_type[tile_size]);
|
|
int end_y = (height / tile_height + 1) * tile_height;
|
|
int end_x = (width / tile_width + 1) * tile_width;
|
|
end_y = std::min(end_y, height);
|
|
end_x = std::min(end_x, width);
|
|
|
|
for (int y = 0; y < end_y; y += tile_height)
|
|
{
|
|
int ty1 = std::min(height, y + tile_height) - y;
|
|
|
|
for (int x = 0; x < end_x; x += tile_width)
|
|
{
|
|
// Prefill the entire array with zeros.
|
|
std::fill(image_out.get(), image_out.get() + tile_size, 0);
|
|
int tx1 = std::min(width, x + tile_width);
|
|
int row = y;
|
|
for (int ty = 0; ty < ty1; ++ty, ++row)
|
|
{
|
|
std::copy(image.get_row(row, x), image.get_row(row, tx1), image_out.get() + ty * tile_width);
|
|
}
|
|
if (TIFFWriteEncodedTile(output, TIFFComputeTile(output, x, y, 0, 0), image_out.get(), tile_size * sizeof(pixel_type)) == -1)
|
|
{
|
|
throw image_writer_exception("Could not write TIFF - TIFF Tile Write failed");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// TODO - handle palette images
|
|
// std::vector<mapnik::rgb> const& palette
|
|
|
|
// unsigned short r[256], g[256], b[256];
|
|
// for (int i = 0; i < (1 << 24); ++i)
|
|
// {
|
|
// r[i] = (unsigned short)palette[i * 3 + 0] << 8;
|
|
// g[i] = (unsigned short)palette[i * 3 + 1] << 8;
|
|
// b[i] = (unsigned short)palette[i * 3 + 2] << 8;
|
|
// }
|
|
// TIFFSetField(output, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_PALETTE);
|
|
// TIFFSetField(output, TIFFTAG_COLORMAP, r, g, b);
|
|
|
|
RealTIFFClose(output);
|
|
}
|
|
|
|
}
|
|
|
|
#endif // MAPNIK_TIFF_IO_HPP
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