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/data_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/concurrency/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 mixed_frame : public data_frame\r
  57 {\r
  58         mutable boost::shared_future<boost::iterator_range<const uint8_t*>>     image_data_;\r
  59         const audio_buffer                                                                                                      audio_data_;\r
  60         const video_format_desc                                                                                         video_desc_;\r
  61         pixel_format_desc                                                                                                       pixel_desc_;\r
  62         const void*                                                                                                                     tag_;\r
  63 \r
  64 public:\r
  65         mixed_frame(const void* tag, boost::shared_future<boost::iterator_range<const uint8_t*>>&& image_data, audio_buffer&& audio_data, const video_format_desc& format_desc) \r
  66                 : tag_(tag)\r
  67                 , image_data_(std::move(image_data))\r
  68                 , audio_data_(std::move(audio_data))\r
  69                 , video_desc_(format_desc)\r
  70                 , pixel_desc_(core::pixel_format::bgra)\r
  71         {\r
  72                 pixel_desc_.planes.push_back(core::pixel_format_desc::plane(format_desc.width, format_desc.height, 4));\r
  73         }       \r
  74         \r
  75         const boost::iterator_range<const uint8_t*> image_data(int index = 0) const override\r
  76         {\r
  77                 return image_data_.get();\r
  78         }\r
  79                 \r
  80         const boost::iterator_range<uint8_t*> image_data(int) override\r
  81         {\r
  82                 BOOST_THROW_EXCEPTION(invalid_operation());\r
  83         }\r
  84         \r
  85         virtual const struct pixel_format_desc& get_pixel_format_desc() const override\r
  86         {\r
  87                 return pixel_desc_;\r
  88         }\r
  89 \r
  90         virtual const audio_buffer& audio_data() const override\r
  91         {\r
  92                 return audio_data_;\r
  93         }\r
  94 \r
  95         virtual audio_buffer& audio_data() override\r
  96         {\r
  97                 BOOST_THROW_EXCEPTION(invalid_operation());\r
  98         }\r
  99 \r
 100         virtual double get_frame_rate() const override\r
 101         {\r
 102                 return video_desc_.fps;\r
 103         }\r
 104 \r
 105         virtual int width() const override\r
 106         {\r
 107                 return video_desc_.width;\r
 108         }\r
 109 \r
 110         virtual int height() const override\r
 111         {\r
 112                 return video_desc_.height;\r
 113         }\r
 114 \r
 115         virtual const void* tag() const override\r
 116         {\r
 117                 return tag_;\r
 118         }\r
 119 };\r
 120                 \r
 121 struct mixer::impl : boost::noncopyable\r
 122 {                               \r
 123         spl::shared_ptr<diagnostics::graph> graph_;\r
 124         audio_mixer                                                     audio_mixer_;\r
 125         spl::shared_ptr<image_mixer>            image_mixer_;\r
 126         \r
 127         std::unordered_map<int, blend_mode>     blend_modes_;\r
 128                         \r
 129         executor executor_;\r
 130 \r
 131 public:\r
 132         impl(spl::shared_ptr<diagnostics::graph> graph, spl::shared_ptr<image_mixer> image_mixer) \r
 133                 : graph_(std::move(graph))\r
 134                 , audio_mixer_()\r
 135                 , image_mixer_(std::move(image_mixer))\r
 136                 , executor_(L"mixer")\r
 137         {                       \r
 138                 graph_->set_color("mix-time", diagnostics::color(1.0f, 0.0f, 0.9f, 0.8));\r
 139         }       \r
 140         \r
 141         spl::shared_ptr<const data_frame> operator()(std::map<int, spl::shared_ptr<draw_frame>> frames, const video_format_desc& format_desc)\r
 142         {               \r
 143                 return executor_.invoke([=]() mutable -> spl::shared_ptr<const struct data_frame>\r
 144                 {               \r
 145                         try\r
 146                         {       \r
 147                                 boost::timer frame_timer;\r
 148 \r
 149                                 BOOST_FOREACH(auto& frame, frames)\r
 150                                 {\r
 151                                         auto blend_it = blend_modes_.find(frame.first);\r
 152                                         image_mixer_->begin_layer(blend_it != blend_modes_.end() ? blend_it->second : blend_mode::normal);\r
 153                                                                                                         \r
 154                                         frame.second->accept(audio_mixer_);                                     \r
 155                                         frame.second->accept(*image_mixer_);\r
 156 \r
 157                                         image_mixer_->end_layer();\r
 158                                 }\r
 159 \r
 160                                 auto image = (*image_mixer_)(format_desc);\r
 161                                 auto audio = audio_mixer_(format_desc);\r
 162                                 \r
 163                                 graph_->set_value("mix-time", frame_timer.elapsed()*format_desc.fps*0.5);\r
 164 \r
 165                                 return spl::make_shared<mixed_frame>(this, std::move(image), std::move(audio), format_desc);    \r
 166                         }\r
 167                         catch(...)\r
 168                         {\r
 169                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 170                                 return data_frame::empty();\r
 171                         }       \r
 172                 });             \r
 173         }\r
 174                                         \r
 175         void set_blend_mode(int index, blend_mode value)\r
 176         {\r
 177                 executor_.begin_invoke([=]\r
 178                 {\r
 179                         auto it = blend_modes_.find(index);\r
 180                         if(it == blend_modes_.end())\r
 181                                 blend_modes_.insert(std::make_pair(index, value));\r
 182                         else\r
 183                                 it->second = value;\r
 184                 }, task_priority::high_priority);\r
 185         }\r
 186         \r
 187         boost::unique_future<boost::property_tree::wptree> info() const\r
 188         {\r
 189                 boost::promise<boost::property_tree::wptree> info;\r
 190                 info.set_value(boost::property_tree::wptree());\r
 191                 return info.get_future();\r
 192         }\r
 193 };\r
 194         \r
 195 mixer::mixer(spl::shared_ptr<diagnostics::graph> graph, spl::shared_ptr<image_mixer> image_mixer) \r
 196         : impl_(new impl(std::move(graph), std::move(image_mixer))){}\r
 197 void mixer::set_blend_mode(int index, blend_mode value){impl_->set_blend_mode(index, value);}\r
 198 boost::unique_future<boost::property_tree::wptree> mixer::info() const{return impl_->info();}\r
 199 spl::shared_ptr<const data_frame> mixer::operator()(std::map<int, spl::shared_ptr<draw_frame>> frames, const struct video_format_desc& format_desc){return (*impl_)(std::move(frames), format_desc);}\r
 200 spl::shared_ptr<write_frame> mixer::create_frame(const void* tag, const core::pixel_format_desc& desc) {return impl_->image_mixer_->create_frame(tag, desc);}\r
 201 }}