git.sesse.net Git - casparcg/blob - core/producer/scene/hotswap_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: Helge Norberg, helge.norberg@svt.se
  20 */
  21
  22 #include "../../StdAfx.h"
  23
  24 #include "hotswap_producer.h"
  25
  26 #include "../frame_producer.h"
  27 #include "../../frame/draw_frame.h"
  28
  29 namespace caspar { namespace core {
  30
  31 struct hotswap_producer::impl
  32 {
  33         spl::shared_ptr<monitor::subject>                       monitor_subject;
  34         binding<std::shared_ptr<frame_producer>>        producer;
  35         constraints                                                                     size;
  36
  37         impl(int width, int height, bool auto_size)
  38                 : size(width, height)
  39         {
  40                 producer.on_change([=]
  41                 {
  42                         if (auto_size)
  43                         {
  44                                 size.width.bind(producer.get()->pixel_constraints().width);
  45                                 size.height.bind(producer.get()->pixel_constraints().height);
  46                         }
  47
  48                         producer.get()->monitor_output().attach_parent(monitor_subject);
  49                 });
  50         }
  51 };
  52
  53 hotswap_producer::hotswap_producer(int width, int height, bool auto_size)
  54         : impl_(new impl(width, height, auto_size))
  55 {
  56 }
  57
  58 hotswap_producer::~hotswap_producer()
  59 {
  60 }
  61
  62 draw_frame hotswap_producer::receive_impl()
  63 {
  64         auto producer = impl_->producer.get();
  65
  66         if (producer)
  67                 return producer->receive();
  68         else
  69                 return draw_frame::empty();
  70 }
  71
  72 constraints& hotswap_producer::pixel_constraints()
  73 {
  74         return impl_->size;
  75 }
  76
  77 std::wstring hotswap_producer::print() const
  78 {
  79         auto producer = impl_->producer.get();
  80         return L"hotswap[" + (producer ? producer->print() : L"") + L"]";
  81 }
  82
  83 std::wstring hotswap_producer::name() const
  84 {
  85         return L"hotswap";
  86 }
  87
  88 boost::property_tree::wptree hotswap_producer::info() const
  89 {
  90         boost::property_tree::wptree info;
  91         info.add(L"type", L"hotswap");
  92
  93         auto producer = impl_->producer.get();
  94
  95         if (producer)
  96                 info.add(L"producer", producer->print());
  97
  98         return info;
  99 }
 100
 101 monitor::subject& hotswap_producer::monitor_output()
 102 {
 103         return *impl_->monitor_subject;
 104 }
 105
 106 variable& hotswap_producer::get_variable(const std::wstring& name)
 107 {
 108         auto producer = impl_->producer.get();
 109
 110         if (producer)
 111                 return producer->get_variable(name);
 112         else
 113                 return frame_producer_base::get_variable(name);
 114 }
 115
 116 const std::vector<std::wstring>& hotswap_producer::get_variables() const
 117 {
 118         auto producer = impl_->producer.get();
 119
 120         if (producer)
 121                 return producer->get_variables();
 122         else
 123                 return frame_producer_base::get_variables();
 124 }
 125
 126 binding<std::shared_ptr<frame_producer>>& hotswap_producer::producer()
 127 {
 128         return impl_->producer;
 129 }
 130
 131 }}