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) */