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/exception/exceptions.h>\r
  35 #include <common/gl/gl_check.h>\r
  36 #include <common/utility/tweener.h>\r
  37 \r
  38 #include <core/mixer/read_frame.h>\r
  39 #include <core/mixer/write_frame.h>\r
  40 #include <core/producer/frame/basic_frame.h>\r
  41 #include <core/producer/frame/frame_factory.h>\r
  42 #include <core/producer/frame/frame_transform.h>\r
  43 #include <core/producer/frame/pixel_format.h>\r
  44 \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 \r
  51 #include <tbb/concurrent_queue.h>\r
  52 #include <tbb/spin_mutex.h>\r
  53 \r
  54 #include <unordered_map>\r
  55 \r
  56 namespace caspar { namespace core {\r
  57                 \r
  58 struct mixer::implementation : boost::noncopyable\r
  59 {               \r
  60         safe_ptr<diagnostics::graph>    graph_;\r
  61         boost::timer                                    mix_timer_;\r
  62 \r
  63         safe_ptr<mixer::target_t>               target_;\r
  64         mutable tbb::spin_mutex                 format_desc_mutex_;\r
  65         video_format_desc                               format_desc_;\r
  66         safe_ptr<ogl_device>                    ogl_;\r
  67         \r
  68         audio_mixer     audio_mixer_;\r
  69         image_mixer image_mixer_;\r
  70         \r
  71         std::unordered_map<int, blend_mode::type> blend_modes_;\r
  72                         \r
  73         executor executor_;\r
  74 \r
  75 public:\r
  76         implementation(const safe_ptr<diagnostics::graph>& graph, const safe_ptr<mixer::target_t>& target, const video_format_desc& format_desc, const safe_ptr<ogl_device>& ogl) \r
  77                 : graph_(graph)\r
  78                 , target_(target)\r
  79                 , format_desc_(format_desc)\r
  80                 , ogl_(ogl)\r
  81                 , image_mixer_(ogl)\r
  82                 , audio_mixer_(graph_)\r
  83                 , executor_(L"mixer")\r
  84         {                       \r
  85                 graph_->set_color("mix-time", diagnostics::color(1.0f, 0.0f, 0.9f));\r
  86         }\r
  87         \r
  88         void send(const std::pair<std::map<int, safe_ptr<core::basic_frame>>, std::shared_ptr<void>>& packet)\r
  89         {                       \r
  90                 executor_.begin_invoke([=]\r
  91                 {               \r
  92                         try\r
  93                         {\r
  94                                 mix_timer_.restart();\r
  95 \r
  96                                 auto frames = packet.first;\r
  97                                 \r
  98                                 BOOST_FOREACH(auto& frame, frames)\r
  99                                 {\r
 100                                         auto blend_it = blend_modes_.find(frame.first);\r
 101                                         image_mixer_.begin_layer(blend_it != blend_modes_.end() ? blend_it->second : blend_mode::normal);\r
 102                                                                                                         \r
 103                                         frame.second->accept(audio_mixer_);                                     \r
 104                                         frame.second->accept(image_mixer_);\r
 105 \r
 106                                         image_mixer_.end_layer();\r
 107                                 }\r
 108 \r
 109                                 auto image = image_mixer_(format_desc_);\r
 110                                 auto audio = audio_mixer_(format_desc_);\r
 111                                 image.wait();\r
 112 \r
 113                                 graph_->update_value("mix-time", mix_timer_.elapsed()*format_desc_.fps*0.5);\r
 114 \r
 115                                 target_->send(std::make_pair(make_safe<read_frame>(ogl_, format_desc_.size, std::move(image.get()), std::move(audio)), packet.second));                                 \r
 116                         }\r
 117                         catch(...)\r
 118                         {\r
 119                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 120                         }       \r
 121                 });             \r
 122         }\r
 123                                         \r
 124         safe_ptr<core::write_frame> create_frame(const void* tag, const core::pixel_format_desc& desc)\r
 125         {               \r
 126                 return make_safe<write_frame>(ogl_, tag, desc);\r
 127         }\r
 128                                 \r
 129         void set_blend_mode(int index, blend_mode::type value)\r
 130         {\r
 131                 executor_.begin_invoke([=]\r
 132                 {\r
 133                         blend_modes_[index] = value;\r
 134                 }, high_priority);\r
 135         }\r
 136         \r
 137         void set_video_format_desc(const video_format_desc& format_desc)\r
 138         {\r
 139                 executor_.begin_invoke([=]\r
 140                 {\r
 141                         tbb::spin_mutex::scoped_lock lock(format_desc_mutex_);\r
 142                         format_desc_ = format_desc;\r
 143                 });\r
 144         }\r
 145 \r
 146         core::video_format_desc get_video_format_desc() const // nothrow\r
 147         {\r
 148                 tbb::spin_mutex::scoped_lock lock(format_desc_mutex_);\r
 149                 return format_desc_;\r
 150         }\r
 151 \r
 152         boost::unique_future<boost::property_tree::wptree> info() const\r
 153         {\r
 154                 boost::promise<boost::property_tree::wptree> info;\r
 155                 info.set_value(boost::property_tree::wptree());\r
 156                 return info.get_future();\r
 157         }\r
 158 };\r
 159         \r
 160 mixer::mixer(const safe_ptr<diagnostics::graph>& graph, const safe_ptr<target_t>& target, const video_format_desc& format_desc, const safe_ptr<ogl_device>& ogl) \r
 161         : impl_(new implementation(graph, target, format_desc, ogl)){}\r
 162 void mixer::send(const std::pair<std::map<int, safe_ptr<core::basic_frame>>, std::shared_ptr<void>>& frames){ impl_->send(frames);}\r
 163 core::video_format_desc mixer::get_video_format_desc() const { return impl_->get_video_format_desc(); }\r
 164 safe_ptr<core::write_frame> mixer::create_frame(const void* tag, const core::pixel_format_desc& desc){ return impl_->create_frame(tag, desc); }         \r
 165 void mixer::set_blend_mode(int index, blend_mode::type value){impl_->set_blend_mode(index, value);}\r
 166 void mixer::set_video_format_desc(const video_format_desc& format_desc){impl_->set_video_format_desc(format_desc);}\r
 167 boost::unique_future<boost::property_tree::wptree> mixer::info() const{return impl_->info();}\r
 168 }}