git.sesse.net Git - casparcg/blob - core/producer/color/color_producer.cpp

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Robert Nagy, ronag89@gmail.com
  20 */
  21
  22 #include "../../stdafx.h"
  23
  24 #include "color_producer.h"
  25
  26 #include <core/producer/frame_producer.h>
  27 #include <core/frame/frame.h>
  28 #include <core/frame/draw_frame.h>
  29 #include <core/frame/frame_factory.h>
  30 #include <core/frame/pixel_format.h>
  31 #include <core/monitor/monitor.h>
  32
  33 #include <common/except.h>
  34 #include <common/array.h>
  35
  36 #include <boost/algorithm/string.hpp>
  37
  38 #include <sstream>
  39
  40 namespace caspar { namespace core {
  41
  42 class color_producer : public frame_producer_base
  43 {
  44         monitor::basic_subject  event_subject_;
  45
  46         const std::wstring              color_str_;
  47         constraints                             constraints_;
  48         draw_frame                              frame_;
  49
  50 public:
  51         explicit color_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& color)
  52                 : color_str_(color)
  53                 , constraints_(1, 1)
  54                 , frame_(create_color_frame(this, frame_factory, color))
  55         {
  56                 CASPAR_LOG(info) << print() << L" Initialized";
  57         }
  58
  59         // frame_producer
  60
  61         draw_frame receive_impl() override
  62         {
  63                 event_subject_ << monitor::event("color") % color_str_;
  64
  65                 return frame_;
  66         }
  67
  68         constraints& pixel_constraints() override
  69         {
  70                 return constraints_;
  71         }
  72
  73         std::wstring print() const override
  74         {
  75                 return L"color[" + color_str_ + L"]";
  76         }
  77
  78         std::wstring name() const override
  79         {
  80                 return L"color";
  81         }
  82
  83         boost::property_tree::wptree info() const override
  84         {
  85                 boost::property_tree::wptree info;
  86                 info.add(L"type", L"color");
  87                 info.add(L"color", color_str_);
  88                 return info;
  89         }
  90
  91         void subscribe(const monitor::observable::observer_ptr& o) override
  92         {
  93                 return event_subject_.subscribe(o);
  94         }
  95
  96         void unsubscribe(const monitor::observable::observer_ptr& o) override
  97         {
  98                 return event_subject_.unsubscribe(o);
  99         }
 100 };
 101
 102 std::wstring get_hex_color(const std::wstring& str)
 103 {
 104         if(str.at(0) == '#')
 105                 return str.length() == 7 ? L"#FF" + str.substr(1) : str;
 106
 107         if(boost::iequals(str, L"EMPTY"))
 108                 return L"#00000000";
 109
 110         if(boost::iequals(str, L"BLACK"))
 111                 return L"#FF000000";
 112
 113         if(boost::iequals(str, L"WHITE"))
 114                 return L"#FFFFFFFF";
 115
 116         if(boost::iequals(str, L"RED"))
 117                 return L"#FFFF0000";
 118
 119         if(boost::iequals(str, L"GREEN"))
 120                 return L"#FF00FF00";
 121
 122         if(boost::iequals(str, L"BLUE"))
 123                 return L"#FF0000FF";
 124
 125         if(boost::iequals(str, L"ORANGE"))
 126                 return L"#FFFFA500";
 127
 128         if(boost::iequals(str, L"YELLOW"))
 129                 return L"#FFFFFF00";
 130
 131         if(boost::iequals(str, L"BROWN"))
 132                 return L"#FFA52A2A";
 133
 134         if(boost::iequals(str, L"GRAY"))
 135                 return L"#FF808080";
 136
 137         if(boost::iequals(str, L"TEAL"))
 138                 return L"#FF008080";
 139
 140         return str;
 141 }
 142
 143 spl::shared_ptr<frame_producer> create_color_producer(const spl::shared_ptr<frame_factory>& frame_factory, const std::vector<std::wstring>& params)
 144 {
 145         if(params.size() < 0)
 146                 return core::frame_producer::empty();
 147
 148         auto color2 = get_hex_color(params[0]);
 149         if(color2.length() != 9 || color2[0] != '#')
 150                 return core::frame_producer::empty();
 151
 152         return spl::make_shared<color_producer>(frame_factory, color2);
 153 }
 154
 155 draw_frame create_color_frame(void* tag, const spl::shared_ptr<frame_factory>& frame_factory, const std::wstring& color)
 156 {
 157         auto color2 = get_hex_color(color);
 158         if(color2.length() != 9 || color2[0] != '#')
 159                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("color") << arg_value_info(color2) << msg_info("Invalid color."));
 160
 161         core::pixel_format_desc desc(pixel_format::bgra);
 162         desc.planes.push_back(core::pixel_format_desc::plane(1, 1, 4));
 163         auto frame = frame_factory->create_frame(tag, desc);
 164
 165         // Read color from hex-string and write to frame pixel.
 166
 167         auto& value = *reinterpret_cast<uint32_t*>(frame.image_data(0).begin());
 168         std::wstringstream str(color2.substr(1));
 169         if(!(str >> std::hex >> value) || !str.eof())
 170                 CASPAR_THROW_EXCEPTION(invalid_argument() << arg_name_info("color") << arg_value_info(color2) << msg_info("Invalid color."));
 171
 172         return core::draw_frame(std::move(frame));
 173 }
 174
 175 }}