//---------------------------------------------------------------------------- // Anti-Grain Geometry (AGG) - Version 2.5 // A high quality rendering engine for C++ // Copyright (C) 2002-2006 Maxim Shemanarev // Contact: mcseem@antigrain.com // mcseemagg@yahoo.com // http://antigrain.com // // AGG 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 2 // of the License, or (at your option) any later version. // // AGG 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 AGG; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, // MA 02110-1301, USA. //---------------------------------------------------------------------------- // // 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 #include <string.h> #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 |