git.sesse.net Git - casparcg/blob - core/producer/scene/const_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 "const_producer.h"
  25
  26 #include "../frame_producer.h"
  27 #include "../../frame/draw_frame.h"
  28
  29 namespace caspar { namespace core {
  30
  31 class const_producer : public frame_producer_base
  32 {
  33         monitor::subject monitor_subject_;
  34         std::vector<draw_frame> frames_;
  35         std::vector<draw_frame>::const_iterator seek_position_;
  36         constraints constraints_;
  37 public:
  38         const_producer(const draw_frame& frame, int width, int height)
  39                 : constraints_(width, height)
  40         {
  41                 frames_.push_back(frame);
  42                 seek_position_ = frames_.begin();
  43                 CASPAR_LOG(info) << print() << L" Initialized";
  44         }
  45
  46         const_producer(std::vector<draw_frame>&& frames, int width, int height)
  47                 : frames_(std::move(frames))
  48                 , seek_position_(frames_.begin())
  49                 , constraints_(width, height)
  50         {
  51                 CASPAR_LOG(info) << print() << L" Initialized";
  52         }
  53
  54         draw_frame receive_impl() override
  55         {
  56                 auto result = *seek_position_;
  57
  58                 if (seek_position_ + 1 != frames_.end())
  59                         ++seek_position_;
  60
  61                 return result;
  62         }
  63
  64         constraints& pixel_constraints() override
  65         {
  66                 return constraints_;
  67         }
  68
  69         std::wstring print() const override
  70         {
  71                 return L"const[]";
  72         }
  73
  74         std::wstring name() const override
  75         {
  76                 return L"const";
  77         }
  78
  79         boost::property_tree::wptree info() const override
  80         {
  81                 boost::property_tree::wptree info;
  82                 info.add(L"type", L"const");
  83                 return info;
  84         }
  85
  86         monitor::subject& monitor_output() override
  87         {
  88                 return monitor_subject_;
  89         }
  90 };
  91
  92 spl::shared_ptr<frame_producer> create_const_producer(
  93                 const draw_frame& frame, int width, int height)
  94 {
  95         return spl::make_shared<const_producer>(frame, width, height);
  96 }
  97
  98 spl::shared_ptr<frame_producer> create_const_producer(
  99                 std::vector<draw_frame>&& frames, int width, int height)
 100 {
 101         return spl::make_shared<const_producer>(std::move(frames), width, height);
 102 }
 103
 104 }}