git.sesse.net Git - casparcg/blob - core/mixer/mixer.cpp

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\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 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "../StdAfx.h"\r
  23 \r
  24 #include "mixer.h"\r
  25 \r
  26 #include "../frame/frame.h"\r
  27 \r
  28 #include "audio/audio_mixer.h"\r
  29 #include "image/image_mixer.h"\r
  30 \r
  31 #include <common/env.h>\r
  32 #include <common/executor.h>\r
  33 #include <common/diagnostics/graph.h>\r
  34 #include <common/except.h>\r
  35 #include <common/gl/gl_check.h>\r
  36 \r
  37 #include <core/frame/draw_frame.h>\r
  38 #include <core/frame/frame_factory.h>\r
  39 #include <core/frame/frame_transform.h>\r
  40 #include <core/frame/pixel_format.h>\r
  41 #include <core/video_format.h>\r
  42 \r
  43 #include <boost/foreach.hpp>\r
  44 #include <boost/timer.hpp>\r
  45 #include <boost/property_tree/ptree.hpp>\r
  46 #include <boost/range/algorithm_ext.hpp>\r
  47 \r
  48 #include <tbb/concurrent_queue.h>\r
  49 #include <tbb/spin_mutex.h>\r
  50 \r
  51 #include <unordered_map>\r
  52 #include <vector>\r
  53 \r
  54 namespace caspar { namespace core {\r
  55 \r
  56 struct mixer::impl : boost::noncopyable\r
  57 {                               \r
  58         spl::shared_ptr<diagnostics::graph> graph_;\r
  59         audio_mixer                                                     audio_mixer_;\r
  60         spl::shared_ptr<image_mixer>            image_mixer_;\r
  61         \r
  62         std::unordered_map<int, blend_mode>     blend_modes_;\r
  63                         \r
  64         executor executor_;\r
  65 \r
  66 public:\r
  67         impl(spl::shared_ptr<diagnostics::graph> graph, spl::shared_ptr<image_mixer> image_mixer) \r
  68                 : graph_(std::move(graph))\r
  69                 , audio_mixer_()\r
  70                 , image_mixer_(std::move(image_mixer))\r
  71                 , executor_(L"mixer")\r
  72         {                       \r
  73                 graph_->set_color("mix-time", diagnostics::color(1.0f, 0.0f, 0.9f, 0.8));\r
  74         }       \r
  75         \r
  76         const_frame operator()(std::map<int, draw_frame> frames, const video_format_desc& format_desc)\r
  77         {               \r
  78                 boost::timer frame_timer;\r
  79 \r
  80                 auto frame = executor_.invoke([=]() mutable -> const_frame\r
  81                 {               \r
  82                         try\r
  83                         {       \r
  84                                 BOOST_FOREACH(auto& frame, frames)\r
  85                                 {\r
  86                                         auto blend_it = blend_modes_.find(frame.first);\r
  87                                         image_mixer_->begin_layer(blend_it != blend_modes_.end() ? blend_it->second : blend_mode::normal);\r
  88                                                                                                         \r
  89                                         frame.second.accept(audio_mixer_);                                      \r
  90                                         frame.second.accept(*image_mixer_);\r
  91 \r
  92                                         image_mixer_->end_layer();\r
  93                                 }\r
  94                                 \r
  95                                 auto image = (*image_mixer_)(format_desc);\r
  96                                 auto audio = audio_mixer_(format_desc);\r
  97 \r
  98                                 auto desc = core::pixel_format_desc(core::pixel_format::bgra);\r
  99                                 desc.planes.push_back(core::pixel_format_desc::plane(format_desc.width, format_desc.height, 4));\r
 100                                 return const_frame(std::move(image), std::move(audio), this, desc);     \r
 101                         }\r
 102                         catch(...)\r
 103                         {\r
 104                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 105                                 return const_frame::empty();\r
 106                         }       \r
 107                 });             \r
 108                                 \r
 109                 graph_->set_value("mix-time", frame_timer.elapsed()*format_desc.fps*0.5);\r
 110 \r
 111                 return frame;\r
 112         }\r
 113                                         \r
 114         void set_blend_mode(int index, blend_mode value)\r
 115         {\r
 116                 executor_.begin_invoke([=]\r
 117                 {\r
 118                         auto it = blend_modes_.find(index);\r
 119                         if(it == blend_modes_.end())\r
 120                                 blend_modes_.insert(std::make_pair(index, value));\r
 121                         else\r
 122                                 it->second = value;\r
 123                 }, task_priority::high_priority);\r
 124         }\r
 125         \r
 126         boost::unique_future<boost::property_tree::wptree> info() const\r
 127         {\r
 128                 boost::promise<boost::property_tree::wptree> info;\r
 129                 info.set_value(boost::property_tree::wptree());\r
 130                 return info.get_future();\r
 131         }\r
 132 };\r
 133         \r
 134 mixer::mixer(spl::shared_ptr<diagnostics::graph> graph, spl::shared_ptr<image_mixer> image_mixer) \r
 135         : impl_(new impl(std::move(graph), std::move(image_mixer))){}\r
 136 void mixer::set_blend_mode(int index, blend_mode value){impl_->set_blend_mode(index, value);}\r
 137 boost::unique_future<boost::property_tree::wptree> mixer::info() const{return impl_->info();}\r
 138 const_frame mixer::operator()(std::map<int, draw_frame> frames, const struct video_format_desc& format_desc){return (*impl_)(std::move(frames), format_desc);}\r
 139 mutable_frame mixer::create_frame(const void* tag, const core::pixel_format_desc& desc) {return impl_->image_mixer_->create_frame(tag, desc);}\r
 140 }}