Gnash 0.8.9

SWFCxForm.h

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00001 // 
00002 //   Copyright (C) 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
00003 // 
00004 // This program is free software; you can redistribute it and/or modify
00005 // it under the terms of the GNU General Public License as published by
00006 // the Free Software Foundation; either version 3 of the License, or
00007 // (at your option) any later version.
00008 // 
00009 // This program is distributed in the hope that it will be useful,
00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012 // GNU General Public License for more details.
00013 // 
00014 // You should have received a copy of the GNU General Public License
00015 // along with this program; if not, write to the Free Software
00016 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00017 
00018 #ifndef GNASHCXFORM_H
00019 #define GNASHCXFORM_H
00020 
00021 #include "dsodefs.h" // for DSOEXPORT
00022 
00023 #include <string>
00024 #include <iosfwd>
00025 #include <boost/cstdint.hpp> 
00026 
00027 namespace gnash {
00028         class rgba;
00029 }
00030 
00031 namespace gnash {
00032 
00034 class DSOEXPORT SWFCxForm
00035 {
00036 public:
00037 
00039     SWFCxForm()
00040         :
00041         ra(256),
00042         ga(256),
00043         ba(256),
00044         aa(256),
00045         rb(0),
00046         gb(0),
00047         bb(0),
00048         ab(0)
00049     {
00050     }
00051 
00052     boost::int16_t ra; // RedMultTerm,   8.8 fixed point
00053     boost::int16_t ga; // GreenMultTerm  8.8 fixed point
00054     boost::int16_t ba; // BlueMultTerm   8.8 fixed point
00055     boost::int16_t aa; // AlphaMultTerm  8.8 fixed point
00056     boost::int16_t rb; // RedAddTerm,    16 bit integer(no fraction)
00057     boost::int16_t gb; // GreenAddTerm   16 bit integer(no fraction)
00058     boost::int16_t bb; // BlueAddTerm    16 bit integer(no fraction)
00059     boost::int16_t ab; // AlphaAddTerm   16 bit integer(no fraction)
00060     
00062     //
00066     void concatenate(const SWFCxForm& c);
00067     
00069     rgba transform(const rgba& in) const;
00070     
00072     void transform(boost::uint8_t& r, boost::uint8_t& g, boost::uint8_t& b,
00073             boost::uint8_t& a) const;    
00074     
00075 };
00076 
00077 inline bool
00078 operator==(const SWFCxForm& a, const SWFCxForm& b)
00079 {
00080         return a.ra == b.ra &&
00081            a.rb == b.rb &&
00082            a.ga == b.ga &&
00083            a.gb == b.gb &&
00084            a.ba == b.ba &&
00085            a.bb == b.bb &&
00086            a.aa == b.aa &&
00087            a.ab == b.ab;
00088 }
00089 
00090 inline bool
00091 operator!=(const SWFCxForm& a, const SWFCxForm& b)
00092 {
00093     return !(a == b);
00094 }
00095 
00097 //
00101 inline bool
00102 invisible(const SWFCxForm& cx)
00103 {
00104     return (255 * cx.aa >> 8) + cx.ab == 0;    
00105 }
00106 
00107 std::ostream& operator<<(std::ostream& os, const SWFCxForm& cx);
00108 
00109 } // namespace gnash
00110 
00111 #endif 
00112 
00113 
00114 // Local Variables:
00115 // mode: C++
00116 // indent-tabs-mode: t
00117 // End: