git.sesse.net Git - casparcg/blob - modules/reroute/producer/reroute_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 "reroute_producer.h"
  25
  26 #include <core/producer/frame_producer.h>
  27 #include <core/frame/draw_frame.h>
  28 #include <core/frame/frame_factory.h>
  29 #include <core/frame/pixel_format.h>
  30 #include <core/frame/frame.h>
  31 #include <core/video_channel.h>
  32 #include <core/producer/stage.h>
  33
  34 #include <common/except.h>
  35 #include <common/diagnostics/graph.h>
  36 #include <common/log.h>
  37 #include <common/reactive.h>
  38
  39 #include <asmlib.h>
  40
  41 #include <tbb/concurrent_queue.h>
  42
  43 #include <boost/property_tree/ptree.hpp>
  44 #include <boost/optional.hpp>
  45 #include <boost/range/algorithm_ext/push_back.hpp>
  46 #include <boost/range/numeric.hpp>
  47 #include <boost/range/adaptor/map.hpp>
  48
  49 #include <queue>
  50
  51 namespace caspar { namespace reroute {
  52
  53 class reroute_producer : public reactive::observer<std::map<int, core::draw_frame>>
  54                                            , public core::frame_producer_base
  55 {
  56         core::monitor::subject                                                                                  monitor_subject_;
  57
  58         core::constraints                                                                                               constraints_;
  59         const spl::shared_ptr<diagnostics::graph>                                               graph_;
  60
  61         tbb::concurrent_bounded_queue<std::map<int, core::draw_frame>>  input_buffer_;
  62 public:
  63         explicit reroute_producer()
  64         {
  65                 graph_->set_color("late-frame", diagnostics::color(0.6f, 0.3f, 0.3f));
  66                 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));
  67                 graph_->set_text(print());
  68                 diagnostics::register_graph(graph_);
  69
  70                 input_buffer_.set_capacity(1);
  71         }
  72
  73         // observable
  74
  75         void on_next(const std::map<int, core::draw_frame>& frames)
  76         {
  77                 if(!input_buffer_.try_push(frames))
  78                         graph_->set_tag("dropped-frame");
  79         }
  80
  81         // frame_producer
  82
  83         core::draw_frame receive_impl() override
  84         {
  85                 std::map<int, core::draw_frame> frames;
  86                 if(!input_buffer_.try_pop(frames))
  87                 {
  88                         graph_->set_tag("late-frame");
  89                         return core::draw_frame::late();
  90                 }
  91
  92                 return boost::accumulate(frames | boost::adaptors::map_values, core::draw_frame::empty(), core::draw_frame::over);
  93         }
  94
  95         core::constraints& pixel_constraints() override
  96         {
  97                 return constraints_;
  98         }
  99
 100         std::wstring print() const override
 101         {
 102                 return L"reroute[]";
 103         }
 104
 105         std::wstring name() const override
 106         {
 107                 return L"reroute";
 108         }
 109
 110         boost::property_tree::wptree info() const override
 111         {
 112                 boost::property_tree::wptree info;
 113                 info.add(L"type", L"rerotue-producer");
 114                 return info;
 115         }
 116
 117         core::monitor::subject& monitor_output()
 118         {
 119                 return monitor_subject_;
 120         }
 121 };
 122
 123 spl::shared_ptr<core::frame_producer> create_producer(core::video_channel& channel)
 124 {
 125         auto producer = spl::make_shared<reroute_producer>();
 126
 127         std::weak_ptr<reactive::observer<std::map<int, core::draw_frame>>> o = producer;
 128
 129         //channel.stage().monitor_output().link_target.subscribe(o);
 130
 131         return producer;
 132 }
 133
 134 }}