git.sesse.net Git - casparcg/blob - core/producer/transition/transition_producer.h

   1 /*\r
   2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 *  This file is part of CasparCG.\r
   5 *\r
   6 *    CasparCG is free software: you can redistribute it and/or modify\r
   7 *    it under the terms of the GNU General Public License as published by\r
   8 *    the Free Software Foundation, either version 3 of the License, or\r
   9 *    (at your option) any later version.\r
  10 *\r
  11 *    CasparCG is distributed in the hope that it will be useful,\r
  12 *    but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 *    GNU General Public License for more details.\r
  15 \r
  16 *    You should have received a copy of the GNU General Public License\r
  17 *    along with CasparCG.  If not, see <http://www.gnu.org/licenses/>.\r
  18 *\r
  19 */\r
  20 #pragma once\r
  21 \r
  22 #include "../frame_producer.h"\r
  23 \r
  24 #include <common/utility/tweener.h>\r
  25 \r
  26 #include <string>\r
  27 #include <memory>\r
  28 \r
  29 namespace caspar { namespace core {\r
  30 \r
  31 struct transition\r
  32 {\r
  33         enum type\r
  34         {\r
  35 \r
  36                 cut = 1,\r
  37                 mix,\r
  38                 push,\r
  39                 slide,\r
  40                 wipe\r
  41         };\r
  42 };\r
  43 \r
  44 struct transition_direction\r
  45 {\r
  46         enum type\r
  47         {\r
  48                 from_left = 1,\r
  49                 from_right\r
  50         };\r
  51 };\r
  52 \r
  53 struct transition_info\r
  54 {\r
  55         transition_info() \r
  56                 : type(transition::cut)\r
  57                 , duration(0)\r
  58                 , direction(transition_direction::from_left)\r
  59                 , tweener(get_tweener(L"linear")){}\r
  60 \r
  61         std::wstring name() const\r
  62         {\r
  63                 switch(type)\r
  64                 {\r
  65                 case transition::cut: return L"cut";\r
  66                 case transition::mix: return L"mix";\r
  67                 case transition::push: return L"push";\r
  68                 case transition::slide: return L"slide";\r
  69                 case transition::wipe: return L"wipe";\r
  70                 default: return L"";\r
  71                 }\r
  72         }\r
  73         \r
  74         size_t                                          duration;\r
  75         transition_direction::type      direction;\r
  76         transition::type                        type;\r
  77         tweener_t                                       tweener;\r
  78 };\r
  79 \r
  80 class transition_producer : public frame_producer\r
  81 {\r
  82 public:\r
  83         explicit transition_producer(const safe_ptr<frame_producer>& destination, const transition_info& info);\r
  84         transition_producer(transition_producer&& other);\r
  85 \r
  86         virtual safe_ptr<basic_frame> receive();\r
  87 \r
  88         virtual safe_ptr<frame_producer> get_following_producer() const;\r
  89 \r
  90         virtual void set_leading_producer(const safe_ptr<frame_producer>& producer);\r
  91         virtual void set_frame_factory(const safe_ptr<frame_factory>& frame_factory);\r
  92 \r
  93         virtual std::wstring print() const;\r
  94 private:\r
  95         struct implementation;\r
  96         std::shared_ptr<implementation> impl_;\r
  97 };\r
  98 \r
  99 }}