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         color_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, uint32_t value)
  52                 : color_str_(L"")
  53                 , constraints_(1, 1)
  54                 , frame_(create_color_frame(this, frame_factory, value))
  55         {
  56                 CASPAR_LOG(info) << print() << L" Initialized";
  57         }
  58
  59
  60         color_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& color)
  61                 : color_str_(color)
  62                 , constraints_(1, 1)
  63                 , frame_(create_color_frame(this, frame_factory, color))
  64         {
  65                 CASPAR_LOG(info) << print() << L" Initialized";
  66         }
  67
  68         // frame_producer
  69
  70         draw_frame receive_impl() override
  71         {
  72                 event_subject_ << monitor::event("color") % color_str_;
  73
  74                 return frame_;
  75         }
  76
  77         constraints& pixel_constraints() override
  78         {
  79                 return constraints_;
  80         }
  81
  82         std::wstring print() const override
  83         {
  84                 return L"color[" + color_str_ + L"]";
  85         }
  86
  87         std::wstring name() const override
  88         {
  89                 return L"color";
  90         }
  91
  92         boost::property_tree::wptree info() const override
  93         {
  94                 boost::property_tree::wptree info;
  95                 info.add(L"type", L"color");
  96                 info.add(L"color", color_str_);
  97                 return info;
  98         }
  99
 100         void subscribe(const monitor::observable::observer_ptr& o) override
 101         {
 102                 return event_subject_.subscribe(o);
 103         }
 104
 105         void unsubscribe(const monitor::observable::observer_ptr& o) override
 106         {
 107                 return event_subject_.unsubscribe(o);
 108         }
 109 };
 110
 111 std::wstring get_hex_color(const std::wstring& str)
 112 {
 113         if(str.at(0) == '#')
 114                 return str.length() == 7 ? L"#FF" + str.substr(1) : str;
 115
 116         std::wstring col_str = boost::to_upper_copy(str);
 117
 118         if(col_str == L"EMPTY")
 119                 return L"#00000000";
 120
 121         if(col_str == L"BLACK")
 122                 return L"#FF000000";
 123
 124         if(col_str == L"WHITE")
 125                 return L"#FFFFFFFF";
 126
 127         if(col_str == L"RED")
 128                 return L"#FFFF0000";
 129
 130         if(col_str == L"GREEN")
 131                 return L"#FF00FF00";
 132
 133         if(col_str == L"BLUE")
 134                 return L"#FF0000FF";
 135
 136         if(col_str == L"ORANGE")
 137                 return L"#FFFFA500";
 138
 139         if(col_str == L"YELLOW")
 140                 return L"#FFFFFF00";
 141
 142         if(col_str == L"BROWN")
 143                 return L"#FFA52A2A";
 144
 145         if(col_str == L"GRAY")
 146                 return L"#FF808080";
 147
 148         if(col_str == L"TEAL")
 149                 return L"#FF008080";
 150
 151         return str;
 152 }
 153
 154 bool try_get_color(const std::wstring& str, uint32_t& value)
 155 {
 156         auto color_str = get_hex_color(str);
 157         if(color_str.length() != 9 || color_str[0] != '#')
 158                 return false;
 159
 160         std::wstringstream ss(color_str.substr(1));
 161         if(!(ss >> std::hex >> value) || !ss.eof())
 162                 return false;
 163
 164         return true;
 165 }
 166
 167 spl::shared_ptr<frame_producer> create_color_producer(const spl::shared_ptr<frame_factory>& frame_factory, uint32_t value)
 168 {
 169         return spl::make_shared<color_producer>(frame_factory, value);
 170 }
 171
 172 spl::shared_ptr<frame_producer> create_color_producer(const spl::shared_ptr<frame_factory>& frame_factory, const std::vector<std::wstring>& params)
 173 {
 174         if(params.size() < 0)
 175                 return core::frame_producer::empty();
 176
 177         uint32_t value = 0;
 178         if(!try_get_color(params[0], value))
 179                 return core::frame_producer::empty();
 180
 181         return spl::make_shared<color_producer>(frame_factory, params[0]);
 182 }
 183
 184 draw_frame create_color_frame(void* tag, const spl::shared_ptr<frame_factory>& frame_factory, uint32_t value)
 185 {
 186         core::pixel_format_desc desc(pixel_format::bgra);
 187         desc.planes.push_back(core::pixel_format_desc::plane(1, 1, 4));
 188         auto frame = frame_factory->create_frame(tag, desc);
 189
 190         *reinterpret_cast<uint32_t*>(frame.image_data(0).begin()) = value;
 191
 192         return core::draw_frame(std::move(frame));
 193 }
 194
 195 draw_frame create_color_frame(void* tag, const spl::shared_ptr<frame_factory>& frame_factory, const std::wstring& str)
 196 {
 197         uint32_t value = 0;
 198         if(!try_get_color(str, value))
 199                 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info("color") << arg_value_info(str) << msg_info("Invalid color."));
 200
 201         return create_color_frame(tag, frame_factory, value);
 202 }
 203
 204 }}