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