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/frame/audio_channel_layout.h>
  32 #include <core/monitor/monitor.h>
  33
  34 #include <common/except.h>
  35 #include <common/array.h>
  36
  37 #include <boost/algorithm/string.hpp>
  38
  39 #include <sstream>
  40
  41 namespace caspar { namespace core {
  42
  43 class color_producer : public frame_producer_base
  44 {
  45         monitor::subject                monitor_subject_;
  46
  47         const std::wstring              color_str_;
  48         constraints                             constraints_;
  49         draw_frame                              frame_;
  50
  51 public:
  52         color_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, uint32_t value)
  53                 : color_str_(L"")
  54                 , constraints_(1, 1)
  55                 , frame_(create_color_frame(this, frame_factory, value))
  56         {
  57                 CASPAR_LOG(info) << print() << L" Initialized";
  58         }
  59
  60
  61         color_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& color)
  62                 : color_str_(color)
  63                 , constraints_(1, 1)
  64                 , frame_(create_color_frame(this, frame_factory, color))
  65         {
  66                 CASPAR_LOG(info) << print() << L" Initialized";
  67         }
  68
  69         // frame_producer
  70
  71         draw_frame receive_impl() override
  72         {
  73                 monitor_subject_ << monitor::message("color") % color_str_;
  74
  75                 return frame_;
  76         }
  77
  78         constraints& pixel_constraints() override
  79         {
  80                 return constraints_;
  81         }
  82
  83         std::wstring print() const override
  84         {
  85                 return L"color[" + color_str_ + L"]";
  86         }
  87
  88         std::wstring name() const override
  89         {
  90                 return L"color";
  91         }
  92
  93         boost::property_tree::wptree info() const override
  94         {
  95                 boost::property_tree::wptree info;
  96                 info.add(L"type", L"color");
  97                 info.add(L"color", color_str_);
  98                 return info;
  99         }
 100
 101         monitor::subject& monitor_output() override {return monitor_subject_;}
 102 };
 103
 104 std::wstring get_hex_color(const std::wstring& str)
 105 {
 106         if(str.at(0) == '#')
 107                 return str.length() == 7 ? L"#FF" + str.substr(1) : str;
 108
 109         std::wstring col_str = boost::to_upper_copy(str);
 110
 111         if(col_str == L"EMPTY")
 112                 return L"#00000000";
 113
 114         if(col_str == L"BLACK")
 115                 return L"#FF000000";
 116
 117         if(col_str == L"WHITE")
 118                 return L"#FFFFFFFF";
 119
 120         if(col_str == L"RED")
 121                 return L"#FFFF0000";
 122
 123         if(col_str == L"GREEN")
 124                 return L"#FF00FF00";
 125
 126         if(col_str == L"BLUE")
 127                 return L"#FF0000FF";
 128
 129         if(col_str == L"ORANGE")
 130                 return L"#FFFFA500";
 131
 132         if(col_str == L"YELLOW")
 133                 return L"#FFFFFF00";
 134
 135         if(col_str == L"BROWN")
 136                 return L"#FFA52A2A";
 137
 138         if(col_str == L"GRAY")
 139                 return L"#FF808080";
 140
 141         if(col_str == L"TEAL")
 142                 return L"#FF008080";
 143
 144         return str;
 145 }
 146
 147 bool try_get_color(const std::wstring& str, uint32_t& value)
 148 {
 149         auto color_str = get_hex_color(str);
 150         if(color_str.length() != 9 || color_str[0] != '#')
 151                 return false;
 152
 153         std::wstringstream ss(color_str.substr(1));
 154         if(!(ss >> std::hex >> value) || !ss.eof())
 155                 return false;
 156
 157         return true;
 158 }
 159
 160 spl::shared_ptr<frame_producer> create_color_producer(const spl::shared_ptr<frame_factory>& frame_factory, uint32_t value)
 161 {
 162         return spl::make_shared<color_producer>(frame_factory, value);
 163 }
 164
 165 spl::shared_ptr<frame_producer> create_color_producer(const spl::shared_ptr<frame_factory>& frame_factory, const std::vector<std::wstring>& params)
 166 {
 167         if(params.size() < 0)
 168                 return core::frame_producer::empty();
 169
 170         uint32_t value = 0;
 171         if(!try_get_color(params.at(0), value))
 172                 return core::frame_producer::empty();
 173
 174         return spl::make_shared<color_producer>(frame_factory, params.at(0));
 175 }
 176
 177 draw_frame create_color_frame(void* tag, const spl::shared_ptr<frame_factory>& frame_factory, uint32_t value)
 178 {
 179         core::pixel_format_desc desc(pixel_format::bgra);
 180         desc.planes.push_back(core::pixel_format_desc::plane(1, 1, 4));
 181         auto frame = frame_factory->create_frame(tag, desc, core::audio_channel_layout::invalid());
 182
 183         *reinterpret_cast<uint32_t*>(frame.image_data(0).begin()) = value;
 184
 185         return core::draw_frame(std::move(frame));
 186 }
 187
 188 draw_frame create_color_frame(void* tag, const spl::shared_ptr<frame_factory>& frame_factory, const std::wstring& str)
 189 {
 190         uint32_t value = 0;
 191         if(!try_get_color(str, value))
 192                 CASPAR_THROW_EXCEPTION(user_error() << msg_info(L"Invalid color: " + str));
 193
 194         return create_color_frame(tag, frame_factory, value);
 195 }
 196
 197 }}