/usr/include/gnash/asobj/SWFCxForm.h is in gnash-dev 0.8.11~git20160109-1build1.
This file is owned by root:root, with mode 0o644.
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// Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012
// Free Software Foundation, Inc.
//
// 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 3 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
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#ifndef GNASHCXFORM_H
#define GNASHCXFORM_H
#include "dsodefs.h" // for DSOEXPORT
#include <iosfwd>
#include <cstdint>
namespace gnash {
class rgba;
}
namespace gnash {
/// Color transformation record
class DSOEXPORT SWFCxForm
{
public:
/// Construct an identity CxForm
SWFCxForm()
:
ra(256),
ga(256),
ba(256),
aa(256),
rb(0),
gb(0),
bb(0),
ab(0)
{
}
std::int16_t ra; // RedMultTerm, 8.8 fixed point
std::int16_t ga; // GreenMultTerm 8.8 fixed point
std::int16_t ba; // BlueMultTerm 8.8 fixed point
std::int16_t aa; // AlphaMultTerm 8.8 fixed point
std::int16_t rb; // RedAddTerm, 16 bit integer(no fraction)
std::int16_t gb; // GreenAddTerm 16 bit integer(no fraction)
std::int16_t bb; // BlueAddTerm 16 bit integer(no fraction)
std::int16_t ab; // AlphaAddTerm 16 bit integer(no fraction)
/// Concatenate SWFCxForm c onto ours.
//
/// When transforming colors, c's transform is applied
/// first, then ours.
///
void concatenate(const SWFCxForm& c);
/// Transform the given color, return the result.
rgba transform(const rgba& in) const;
/// Transform the given color.
void transform(std::uint8_t& r, std::uint8_t& g, std::uint8_t& b,
std::uint8_t& a) const;
};
inline bool
operator==(const SWFCxForm& a, const SWFCxForm& b)
{
return a.ra == b.ra &&
a.rb == b.rb &&
a.ga == b.ga &&
a.gb == b.gb &&
a.ba == b.ba &&
a.bb == b.bb &&
a.aa == b.aa &&
a.ab == b.ab;
}
inline bool
operator!=(const SWFCxForm& a, const SWFCxForm& b)
{
return !(a == b);
}
/// Returns true when the SWFCxForm leads to alpha == 0
//
/// Not the _alpha property, but the visible alpha related to dislpay.
/// The two might be completely different. eg. mc._alpha ranges in
/// [-32768, 32767], but the alpha on screen ranges in [0, 255]
inline bool
invisible(const SWFCxForm& cx)
{
return (255 * cx.aa >> 8) + cx.ab == 0;
}
std::ostream& operator<<(std::ostream& os, const SWFCxForm& cx);
} // namespace gnash
#endif
// Local Variables:
// mode: C++
// indent-tabs-mode: t
// End:
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