sij/mapnik
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
mapnik/deps/agg/include/agg_pixfmt_rgb.h

861 lines
30 KiB
C
Raw Permalink Normal View History

remove tinyxml, no longer needed by boost ptree as it bundles rapidxml now
2011-10-12 05:02:50 +02:00
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for high precision colors has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_PIXFMT_RGB_INCLUDED
#define AGG_PIXFMT_RGB_INCLUDED
+ use c++ headers + apply mapnik c++ style formatting
2013-02-28 20:41:08 +01:00
#include <cstring>
remove tinyxml, no longer needed by boost ptree as it bundles rapidxml now
2011-10-12 05:02:50 +02:00
#include "agg_basics.h"
#include "agg_color_rgba.h"
#include "agg_rendering_buffer.h"
namespace agg
{
//=====================================================apply_gamma_dir_rgb
template<class ColorT, class Order, class GammaLut> class apply_gamma_dir_rgb
{
public:
typedef typename ColorT::value_type value_type;
apply_gamma_dir_rgb(const GammaLut& gamma) : m_gamma(gamma) {}
AGG_INLINE void operator () (value_type* p)
{
p[Order::R] = m_gamma.dir(p[Order::R]);
p[Order::G] = m_gamma.dir(p[Order::G]);
p[Order::B] = m_gamma.dir(p[Order::B]);
}
private:
const GammaLut& m_gamma;
};
//=====================================================apply_gamma_inv_rgb
template<class ColorT, class Order, class GammaLut> class apply_gamma_inv_rgb
{
public:
typedef typename ColorT::value_type value_type;
apply_gamma_inv_rgb(const GammaLut& gamma) : m_gamma(gamma) {}
AGG_INLINE void operator () (value_type* p)
{
p[Order::R] = m_gamma.inv(p[Order::R]);
p[Order::G] = m_gamma.inv(p[Order::G]);
p[Order::B] = m_gamma.inv(p[Order::B]);
}
private:
const GammaLut& m_gamma;
};
//=========================================================blender_rgb
template<class ColorT, class Order> struct blender_rgb
{
typedef ColorT color_type;
typedef Order order_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
enum base_scale_e { base_shift = color_type::base_shift };
//--------------------------------------------------------------------
static AGG_INLINE void blend_pix(value_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned cover=0)
{
p[Order::R] += (value_type)(((cr - p[Order::R]) * alpha) >> base_shift);
p[Order::G] += (value_type)(((cg - p[Order::G]) * alpha) >> base_shift);
p[Order::B] += (value_type)(((cb - p[Order::B]) * alpha) >> base_shift);
}
};
//======================================================blender_rgb_pre
template<class ColorT, class Order> struct blender_rgb_pre
{
typedef ColorT color_type;
typedef Order order_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
enum base_scale_e { base_shift = color_type::base_shift };
//--------------------------------------------------------------------
static AGG_INLINE void blend_pix(value_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned cover)
{
alpha = color_type::base_mask - alpha;
cover = (cover + 1) << (base_shift - 8);
p[Order::R] = (value_type)((p[Order::R] * alpha + cr * cover) >> base_shift);
p[Order::G] = (value_type)((p[Order::G] * alpha + cg * cover) >> base_shift);
p[Order::B] = (value_type)((p[Order::B] * alpha + cb * cover) >> base_shift);
}
//--------------------------------------------------------------------
static AGG_INLINE void blend_pix(value_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha)
{
alpha = color_type::base_mask - alpha;
p[Order::R] = (value_type)(((p[Order::R] * alpha) >> base_shift) + cr);
p[Order::G] = (value_type)(((p[Order::G] * alpha) >> base_shift) + cg);
p[Order::B] = (value_type)(((p[Order::B] * alpha) >> base_shift) + cb);
}
};
//===================================================blender_rgb_gamma
template<class ColorT, class Order, class Gamma> class blender_rgb_gamma
{
public:
typedef ColorT color_type;
typedef Order order_type;
typedef Gamma gamma_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
enum base_scale_e { base_shift = color_type::base_shift };
//--------------------------------------------------------------------
blender_rgb_gamma() : m_gamma(0) {}
void gamma(const gamma_type& g) { m_gamma = &g; }
//--------------------------------------------------------------------
AGG_INLINE void blend_pix(value_type* p,
unsigned cr, unsigned cg, unsigned cb,
unsigned alpha,
unsigned cover=0)
{
calc_type r = m_gamma->dir(p[Order::R]);
calc_type g = m_gamma->dir(p[Order::G]);
calc_type b = m_gamma->dir(p[Order::B]);
p[Order::R] = m_gamma->inv((((m_gamma->dir(cr) - r) * alpha) >> base_shift) + r);
p[Order::G] = m_gamma->inv((((m_gamma->dir(cg) - g) * alpha) >> base_shift) + g);
p[Order::B] = m_gamma->inv((((m_gamma->dir(cb) - b) * alpha) >> base_shift) + b);
}
private:
const gamma_type* m_gamma;
};
//==================================================pixfmt_alpha_blend_rgb
template<class Blender, class RenBuf> class pixfmt_alpha_blend_rgb
{
public:
typedef RenBuf rbuf_type;
typedef Blender blender_type;
typedef typename rbuf_type::row_data row_data;
typedef typename blender_type::color_type color_type;
typedef typename blender_type::order_type order_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
enum base_scale_e
{
base_shift = color_type::base_shift,
base_scale = color_type::base_scale,
base_mask = color_type::base_mask,
pix_width = sizeof(value_type) * 3
};
private:
//--------------------------------------------------------------------
AGG_INLINE void copy_or_blend_pix(value_type* p,
const color_type& c,
unsigned cover)
{
if (c.a)
{
calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8;
if(alpha == base_mask)
{
p[order_type::R] = c.r;
p[order_type::G] = c.g;
p[order_type::B] = c.b;
}
else
{
m_blender.blend_pix(p, c.r, c.g, c.b, alpha, cover);
}
}
}
//--------------------------------------------------------------------
AGG_INLINE void copy_or_blend_pix(value_type* p,
const color_type& c)
{
if (c.a)
{
if(c.a == base_mask)
{
p[order_type::R] = c.r;
p[order_type::G] = c.g;
p[order_type::B] = c.b;
}
else
{
m_blender.blend_pix(p, c.r, c.g, c.b, c.a);
}
}
}
public:
//--------------------------------------------------------------------
explicit pixfmt_alpha_blend_rgb(rbuf_type& rb) :
m_rbuf(&rb)
{}
void attach(rbuf_type& rb) { m_rbuf = &rb; }
//--------------------------------------------------------------------
template<class PixFmt>
bool attach(PixFmt& pixf, int x1, int y1, int x2, int y2)
{
rect_i r(x1, y1, x2, y2);
if(r.clip(rect_i(0, 0, pixf.width()-1, pixf.height()-1)))
{
int stride = pixf.stride();
m_rbuf->attach(pixf.pix_ptr(r.x1, stride < 0 ? r.y2 : r.y1),
(r.x2 - r.x1) + 1,
(r.y2 - r.y1) + 1,
stride);
return true;
}
return false;
}
//--------------------------------------------------------------------
Blender& blender() { return m_blender; }
//--------------------------------------------------------------------
AGG_INLINE unsigned width() const { return m_rbuf->width(); }
AGG_INLINE unsigned height() const { return m_rbuf->height(); }
AGG_INLINE int stride() const { return m_rbuf->stride(); }
//--------------------------------------------------------------------
AGG_INLINE int8u* row_ptr(int y) { return m_rbuf->row_ptr(y); }
AGG_INLINE const int8u* row_ptr(int y) const { return m_rbuf->row_ptr(y); }
AGG_INLINE row_data row(int y) const { return m_rbuf->row(y); }
//--------------------------------------------------------------------
AGG_INLINE int8u* pix_ptr(int x, int y)
{
return m_rbuf->row_ptr(y) + x * pix_width;
}
AGG_INLINE const int8u* pix_ptr(int x, int y) const
{
return m_rbuf->row_ptr(y) + x * pix_width;
}
//--------------------------------------------------------------------
AGG_INLINE static void make_pix(int8u* p, const color_type& c)
{
((value_type*)p)[order_type::R] = c.r;
((value_type*)p)[order_type::G] = c.g;
((value_type*)p)[order_type::B] = c.b;
}
//--------------------------------------------------------------------
AGG_INLINE color_type pixel(int x, int y) const
{
value_type* p = (value_type*)m_rbuf->row_ptr(y) + x + x + x;
return color_type(p[order_type::R],
p[order_type::G],
p[order_type::B]);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_pixel(int x, int y, const color_type& c)
{
value_type* p = (value_type*)m_rbuf->row_ptr(x, y, 1) + x + x + x;
p[order_type::R] = c.r;
p[order_type::G] = c.g;
p[order_type::B] = c.b;
}
//--------------------------------------------------------------------
AGG_INLINE void blend_pixel(int x, int y, const color_type& c, int8u cover)
{
copy_or_blend_pix((value_type*)m_rbuf->row_ptr(x, y, 1) + x + x + x, c, cover);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_hline(int x, int y,
unsigned len,
const color_type& c)
{
value_type* p = (value_type*)m_rbuf->row_ptr(x, y, len) + x + x + x;
do
{
p[order_type::R] = c.r;
p[order_type::G] = c.g;
p[order_type::B] = c.b;
p += 3;
}
while(--len);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_vline(int x, int y,
unsigned len,
const color_type& c)
{
do
{
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x + x + x;
p[order_type::R] = c.r;
p[order_type::G] = c.g;
p[order_type::B] = c.b;
}
while(--len);
}
//--------------------------------------------------------------------
void blend_hline(int x, int y,
unsigned len,
const color_type& c,
int8u cover)
{
if (c.a)
{
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y, len) + x + x + x;
calc_type alpha = (calc_type(c.a) * (calc_type(cover) + 1)) >> 8;
if(alpha == base_mask)
{
do
{
p[order_type::R] = c.r;
p[order_type::G] = c.g;
p[order_type::B] = c.b;
p += 3;
}
while(--len);
}
else
{
do
{
m_blender.blend_pix(p, c.r, c.g, c.b, alpha, cover);
p += 3;
}
while(--len);
}
}
}
//--------------------------------------------------------------------
void blend_vline(int x, int y,
unsigned len,
const color_type& c,
int8u cover)
{
if (c.a)
{
value_type* p;
calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8;
if(alpha == base_mask)
{
do
{
p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x + x + x;
p[order_type::R] = c.r;
p[order_type::G] = c.g;
p[order_type::B] = c.b;
}
while(--len);
}
else
{
do
{
p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x + x + x;
m_blender.blend_pix(p, c.r, c.g, c.b, alpha, cover);
}
while(--len);
}
}
}
//--------------------------------------------------------------------
void blend_solid_hspan(int x, int y,
unsigned len,
const color_type& c,
const int8u* covers)
{
if (c.a)
{
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y, len) + x + x + x;
do
{
calc_type alpha = (calc_type(c.a) * (calc_type(*covers) + 1)) >> 8;
if(alpha == base_mask)
{
p[order_type::R] = c.r;
p[order_type::G] = c.g;
p[order_type::B] = c.b;
}
else
{
m_blender.blend_pix(p, c.r, c.g, c.b, alpha, *covers);
}
p += 3;
++covers;
}
while(--len);
}
}
//--------------------------------------------------------------------
void blend_solid_vspan(int x, int y,
unsigned len,
const color_type& c,
const int8u* covers)
{
if (c.a)
{
do
{
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x + x + x;
calc_type alpha = (calc_type(c.a) * (calc_type(*covers) + 1)) >> 8;
if(alpha == base_mask)
{
p[order_type::R] = c.r;
p[order_type::G] = c.g;
p[order_type::B] = c.b;
}
else
{
m_blender.blend_pix(p, c.r, c.g, c.b, alpha, *covers);
}
++covers;
}
while(--len);
}
}
//--------------------------------------------------------------------
void copy_color_hspan(int x, int y,
unsigned len,
const color_type* colors)
{
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y, len) + x + x + x;
do
{
p[order_type::R] = colors->r;
p[order_type::G] = colors->g;
p[order_type::B] = colors->b;
++colors;
p += 3;
}
while(--len);
}
//--------------------------------------------------------------------
void copy_color_vspan(int x, int y,
unsigned len,
const color_type* colors)
{
do
{
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x + x + x;
p[order_type::R] = colors->r;
p[order_type::G] = colors->g;
p[order_type::B] = colors->b;
++colors;
}
while(--len);
}
//--------------------------------------------------------------------
void blend_color_hspan(int x, int y,
unsigned len,
const color_type* colors,
const int8u* covers,
int8u cover)
{
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y, len) + x + x + x;
if(covers)
{
do
{
copy_or_blend_pix(p, *colors++, *covers++);
p += 3;
}
while(--len);
}
else
{
if(cover == 255)
{
do
{
copy_or_blend_pix(p, *colors++);
p += 3;
}
while(--len);
}
else
{
do
{
copy_or_blend_pix(p, *colors++, cover);
p += 3;
}
while(--len);
}
}
}
//--------------------------------------------------------------------
void blend_color_vspan(int x, int y,
unsigned len,
const color_type* colors,
const int8u* covers,
int8u cover)
{
value_type* p;
if(covers)
{
do
{
p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x + x + x;
copy_or_blend_pix(p, *colors++, *covers++);
}
while(--len);
}
else
{
if(cover == 255)
{
do
{
p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x + x + x;
copy_or_blend_pix(p, *colors++);
}
while(--len);
}
else
{
do
{
p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x + x + x;
copy_or_blend_pix(p, *colors++, cover);
}
while(--len);
}
}
}
//--------------------------------------------------------------------
template<class Function> void for_each_pixel(Function f)
{
unsigned y;
for(y = 0; y < height(); ++y)
{
row_data r = m_rbuf->row(y);
if(r.ptr)
{
unsigned len = r.x2 - r.x1 + 1;
value_type* p = (value_type*)
m_rbuf->row_ptr(r.x1, y, len) + r.x1 * 3;
do
{
f(p);
p += 3;
}
while(--len);
}
}
}
//--------------------------------------------------------------------
template<class GammaLut> void apply_gamma_dir(const GammaLut& g)
{
for_each_pixel(apply_gamma_dir_rgb<color_type, order_type, GammaLut>(g));
}
//--------------------------------------------------------------------
template<class GammaLut> void apply_gamma_inv(const GammaLut& g)
{
for_each_pixel(apply_gamma_inv_rgb<color_type, order_type, GammaLut>(g));
}
//--------------------------------------------------------------------
template<class RenBuf2>
void copy_from(const RenBuf2& from,
int xdst, int ydst,
int xsrc, int ysrc,
unsigned len)
{
const int8u* p = from.row_ptr(ysrc);
if(p)
{
memmove(m_rbuf->row_ptr(xdst, ydst, len) + xdst * pix_width,
p + xsrc * pix_width,
len * pix_width);
}
}
//--------------------------------------------------------------------
template<class SrcPixelFormatRenderer>
void blend_from(const SrcPixelFormatRenderer& from,
int xdst, int ydst,
int xsrc, int ysrc,
unsigned len,
int8u cover)
{
typedef typename SrcPixelFormatRenderer::order_type src_order;
const value_type* psrc = (const value_type*)from.row_ptr(ysrc);
if(psrc)
{
psrc += xsrc * 4;
value_type* pdst =
(value_type*)m_rbuf->row_ptr(xdst, ydst, len) + xdst * 3;
if(cover == 255)
{
do
{
value_type alpha = psrc[src_order::A];
if(alpha)
{
if(alpha == base_mask)
{
pdst[order_type::R] = psrc[src_order::R];
pdst[order_type::G] = psrc[src_order::G];
pdst[order_type::B] = psrc[src_order::B];
}
else
{
m_blender.blend_pix(pdst,
psrc[src_order::R],
psrc[src_order::G],
psrc[src_order::B],
alpha);
}
}
psrc += 4;
pdst += 3;
}
while(--len);
}
else
{
color_type color;
do
{
color.r = psrc[src_order::R];
color.g = psrc[src_order::G];
color.b = psrc[src_order::B];
color.a = psrc[src_order::A];
copy_or_blend_pix(pdst, color, cover);
psrc += 4;
pdst += 3;
}
while(--len);
}
}
}
//--------------------------------------------------------------------
template<class SrcPixelFormatRenderer>
void blend_from_color(const SrcPixelFormatRenderer& from,
const color_type& color,
int xdst, int ydst,
int xsrc, int ysrc,
unsigned len,
int8u cover)
{
typedef typename SrcPixelFormatRenderer::value_type src_value_type;
const src_value_type* psrc = (src_value_type*)from.row_ptr(ysrc);
if(psrc)
{
value_type* pdst =
(value_type*)m_rbuf->row_ptr(xdst, ydst, len) + xdst * 3;
do
{
copy_or_blend_pix(pdst,
color,
(*psrc * cover + base_mask) >> base_shift);
++psrc;
pdst += 3;
}
while(--len);
}
}
//--------------------------------------------------------------------
template<class SrcPixelFormatRenderer>
void blend_from_lut(const SrcPixelFormatRenderer& from,
const color_type* color_lut,
int xdst, int ydst,
int xsrc, int ysrc,
unsigned len,
int8u cover)
{
typedef typename SrcPixelFormatRenderer::value_type src_value_type;
const src_value_type* psrc = (src_value_type*)from.row_ptr(ysrc);
if(psrc)
{
value_type* pdst =
(value_type*)m_rbuf->row_ptr(xdst, ydst, len) + xdst * 3;
if(cover == 255)
{
do
{
const color_type& color = color_lut[*psrc];
m_blender.blend_pix(pdst,
color.r, color.g, color.b, color.a);
++psrc;
pdst += 3;
}
while(--len);
}
else
{
do
{
copy_or_blend_pix(pdst, color_lut[*psrc], cover);
++psrc;
pdst += 3;
}
while(--len);
}
}
}
private:
rbuf_type* m_rbuf;
Blender m_blender;
};
typedef pixfmt_alpha_blend_rgb<blender_rgb<rgba8, order_rgb>, rendering_buffer> pixfmt_rgb24; //----pixfmt_rgb24
typedef pixfmt_alpha_blend_rgb<blender_rgb<rgba8, order_bgr>, rendering_buffer> pixfmt_bgr24; //----pixfmt_bgr24
typedef pixfmt_alpha_blend_rgb<blender_rgb<rgba16, order_rgb>, rendering_buffer> pixfmt_rgb48; //----pixfmt_rgb48
typedef pixfmt_alpha_blend_rgb<blender_rgb<rgba16, order_bgr>, rendering_buffer> pixfmt_bgr48; //----pixfmt_bgr48
typedef pixfmt_alpha_blend_rgb<blender_rgb_pre<rgba8, order_rgb>, rendering_buffer> pixfmt_rgb24_pre; //----pixfmt_rgb24_pre
typedef pixfmt_alpha_blend_rgb<blender_rgb_pre<rgba8, order_bgr>, rendering_buffer> pixfmt_bgr24_pre; //----pixfmt_bgr24_pre
typedef pixfmt_alpha_blend_rgb<blender_rgb_pre<rgba16, order_rgb>, rendering_buffer> pixfmt_rgb48_pre; //----pixfmt_rgb48_pre
typedef pixfmt_alpha_blend_rgb<blender_rgb_pre<rgba16, order_bgr>, rendering_buffer> pixfmt_bgr48_pre; //----pixfmt_bgr48_pre
//-----------------------------------------------------pixfmt_rgb24_gamma
template<class Gamma> class pixfmt_rgb24_gamma :
public pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba8, order_rgb, Gamma>, rendering_buffer>
{
public:
pixfmt_rgb24_gamma(rendering_buffer& rb, const Gamma& g) :
pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba8, order_rgb, Gamma>, rendering_buffer>(rb)
{
this->blender().gamma(g);
}
};
//-----------------------------------------------------pixfmt_bgr24_gamma
template<class Gamma> class pixfmt_bgr24_gamma :
public pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba8, order_bgr, Gamma>, rendering_buffer>
{
public:
pixfmt_bgr24_gamma(rendering_buffer& rb, const Gamma& g) :
pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba8, order_bgr, Gamma>, rendering_buffer>(rb)
{
this->blender().gamma(g);
}
};
//-----------------------------------------------------pixfmt_rgb48_gamma
template<class Gamma> class pixfmt_rgb48_gamma :
public pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_rgb, Gamma>, rendering_buffer>
{
public:
pixfmt_rgb48_gamma(rendering_buffer& rb, const Gamma& g) :
pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_rgb, Gamma>, rendering_buffer>(rb)
{
this->blender().gamma(g);
}
};
//-----------------------------------------------------pixfmt_bgr48_gamma
template<class Gamma> class pixfmt_bgr48_gamma :
public pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_bgr, Gamma>, rendering_buffer>
{
public:
pixfmt_bgr48_gamma(rendering_buffer& rb, const Gamma& g) :
pixfmt_alpha_blend_rgb<blender_rgb_gamma<rgba16, order_bgr, Gamma>, rendering_buffer>(rb)
{
this->blender().gamma(g);
}
};
}
#endif
Reference in a new issue Copy permalink