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 "read_frame.h"\r
  27 #include "write_frame.h"\r
  28 \r
  29 #include "audio/audio_mixer.h"\r
  30 #include "image/image_mixer.h"\r
  31 \r
  32 #include <common/env.h>\r
  33 #include <common/concurrency/executor.h>\r
  34 #include <common/diagnostics/graph.h>\r
  35 #include <common/exception/exceptions.h>\r
  36 #include <common/gl/gl_check.h>\r
  37 #include <common/utility/tweener.h>\r
  38 \r
  39 #include <core/mixer/read_frame.h>\r
  40 #include <core/mixer/write_frame.h>\r
  41 #include <core/producer/frame/basic_frame.h>\r
  42 #include <core/producer/frame/frame_factory.h>\r
  43 #include <core/producer/frame/frame_transform.h>\r
  44 #include <core/producer/frame/pixel_format.h>\r
  45 #include <core/video_format.h>\r
  46 \r
  47 #include <boost/foreach.hpp>\r
  48 #include <boost/timer.hpp>\r
  49 #include <boost/property_tree/ptree.hpp>\r
  50 #include <boost/range/algorithm_ext.hpp>\r
  51 \r
  52 #include <tbb/concurrent_queue.h>\r
  53 #include <tbb/spin_mutex.h>\r
  54 \r
  55 #include <unordered_map>\r
  56 #include <vector>\r
  57 \r
  58 namespace caspar { namespace core {\r
  59                 \r
  60 struct mixer::impl : boost::noncopyable\r
  61 {               \r
  62         safe_ptr<mixer::target_t>               target_;\r
  63 \r
  64         safe_ptr<diagnostics::graph>    graph_;\r
  65         boost::timer                                    mix_timer_;     \r
  66 \r
  67         video_format_desc                               format_desc_;\r
  68         safe_ptr<ogl_device>                    ogl_;\r
  69         \r
  70         audio_mixer                                             audio_mixer_;\r
  71         image_mixer                                             image_mixer_;\r
  72         \r
  73         std::unordered_map<int, blend_mode>     blend_modes_;\r
  74                         \r
  75         executor executor_;\r
  76 \r
  77 public:\r
  78         impl(const safe_ptr<mixer::target_t>& target, const safe_ptr<diagnostics::graph>& graph, const video_format_desc& format_desc, const safe_ptr<ogl_device>& ogl) \r
  79                 : target_(target)\r
  80                 , graph_(graph)\r
  81                 , format_desc_(format_desc)\r
  82                 , ogl_(ogl)\r
  83                 , image_mixer_(ogl)\r
  84                 , audio_mixer_(graph_)\r
  85                 , executor_(L"mixer")\r
  86         {                       \r
  87                 graph_->set_color("mix-time", diagnostics::color(1.0f, 0.0f, 0.9f, 0.8));\r
  88         }\r
  89         \r
  90         void send(const std::pair<std::map<int, safe_ptr<core::basic_frame>>, std::shared_ptr<void>>& packet)\r
  91         {                       \r
  92                 executor_.begin_invoke([=]\r
  93                 {               \r
  94                         try\r
  95                         {\r
  96                                 mix_timer_.restart();\r
  97 \r
  98                                 auto frames = packet.first;\r
  99                                 \r
 100                                 BOOST_FOREACH(auto& frame, frames)\r
 101                                 {\r
 102                                         auto blend_it = blend_modes_.find(frame.first);\r
 103                                         image_mixer_.begin_layer(blend_it != blend_modes_.end() ? blend_it->second : blend_mode::normal);\r
 104                                                                                                         \r
 105                                         frame.second->accept(audio_mixer_);                                     \r
 106                                         frame.second->accept(image_mixer_);\r
 107 \r
 108                                         image_mixer_.end_layer();\r
 109                                 }\r
 110 \r
 111                                 auto image = image_mixer_(format_desc_);\r
 112                                 auto audio = audio_mixer_(format_desc_);\r
 113                                 image.wait();\r
 114 \r
 115                                 graph_->set_value("mix-time", mix_timer_.elapsed()*format_desc_.fps*0.5);\r
 116                                 \r
 117                                 target_->send(std::make_pair(make_safe<read_frame>(ogl_, format_desc_.width, format_desc_.height, std::move(image.get()), std::move(audio)), packet.second));   \r
 118                         }\r
 119                         catch(...)\r
 120                         {\r
 121                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 122                         }       \r
 123                 });             \r
 124         }\r
 125                                         \r
 126         void set_blend_mode(int index, blend_mode value)\r
 127         {\r
 128                 executor_.begin_invoke([=]\r
 129                 {\r
 130                         auto it = blend_modes_.find(index);\r
 131                         if(it == blend_modes_.end())\r
 132                                 blend_modes_.insert(std::make_pair(index, value));\r
 133                         else\r
 134                                 it->second = value;\r
 135                 }, high_priority);\r
 136         }\r
 137         \r
 138         void set_video_format_desc(const video_format_desc& format_desc)\r
 139         {\r
 140                 executor_.begin_invoke([=]\r
 141                 {\r
 142                         format_desc_ = format_desc;\r
 143                 });\r
 144         }\r
 145 \r
 146         boost::unique_future<boost::property_tree::wptree> info() const\r
 147         {\r
 148                 boost::promise<boost::property_tree::wptree> info;\r
 149                 info.set_value(boost::property_tree::wptree());\r
 150                 return info.get_future();\r
 151         }\r
 152 };\r
 153         \r
 154 mixer::mixer(const safe_ptr<target_t>& target, const safe_ptr<diagnostics::graph>& graph, const video_format_desc& format_desc, const safe_ptr<ogl_device>& ogl) \r
 155         : impl_(new impl(target, graph, format_desc, ogl)){}\r
 156 void mixer::send(const std::pair<std::map<int, safe_ptr<core::basic_frame>>, std::shared_ptr<void>>& frames){ impl_->send(frames);}\r
 157 void mixer::set_blend_mode(int index, blend_mode value){impl_->set_blend_mode(index, value);}\r
 158 void mixer::set_video_format_desc(const video_format_desc& format_desc){impl_->set_video_format_desc(format_desc);}\r
 159 boost::unique_future<boost::property_tree::wptree> mixer::info() const{return impl_->info();}\r
 160 }}