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Diffstat (limited to 'lib/pcxstream.hh')
-rw-r--r-- | lib/pcxstream.hh | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/lib/pcxstream.hh b/lib/pcxstream.hh new file mode 100644 index 0000000..883b0af --- /dev/null +++ b/lib/pcxstream.hh @@ -0,0 +1,93 @@ +// pcxstream.hh -- image streams producing PCX files +// Copyright (C) 2011 SEIKO EPSON CORPORATION +// +// This file is part of the 'iscan' program. +// +// The 'iscan' program is free-ish 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 of the License 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 FITNESS +// FOR A PARTICULAR PURPOSE or MERCHANTABILITY. +// See the GNU General Public License for more details. +// +// You should have received a verbatim copy of the GNU General Public +// License along with this program; if not, write to: +// +// Free Software Foundation, Inc. +// 59 Temple Place, Suite 330 +// Boston, MA 02111-1307 USA +// +// As a special exception, the copyright holders give permission +// to link the code of this program with the esmod library and +// distribute linked combinations including the two. You must obey +// the GNU General Public License in all respects for all of the +// code used other then esmod. + + +#ifndef iscan_pcxstream_hh_included +#define iscan_pcxstream_hh_included + +#ifndef __cplusplus +#error "This is a C++ header file; use a C++ compiler to compile it." +#endif + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "basic-imgstream.hh" + +#include <cstdio> +#include <string> + +namespace iscan +{ + using std::string; + + class pcxstream : public basic_imgstream + { + public: + typedef basic_imgstream::byte_type byte_type; + typedef basic_imgstream::size_type size_type; + + explicit pcxstream (FILE *fp, const string& name = string ()); + virtual ~pcxstream (void); + + virtual basic_imgstream& write (const byte_type *line, size_type n); + virtual basic_imgstream& flush (void); + + static bool is_usable (void); + + private: + basic_imgstream& write_header (void); + void write_color (const byte_type *line, size_type n); + void write_gray (const byte_type *line, size_type n); + void write_mono (const byte_type *line, size_type n); + void write_row (const byte_type *line, size_type n); + void write_bytes (const byte_type *bytes, size_type n); + void write_palette (void); + size_type compress_row (const byte_type *line, + const size_type n, + byte_type *compressed); + void check_consistency (void) const; + void set_value_le (const size_type value, + byte_type *array, + const size_type array_size); + + FILE *_stream; + bool _header; + bool _footer; + byte_type _pcx_header [128]; + size_type _bytesperline; + byte_type *_row_buf; + byte_type *_zbuf; + + void (pcxstream::*pwrite) (const byte_type *line, size_type n); + }; + +} // namespace iscan + +#endif /* !defined (iscan_pcxstream_hh_included) */ |