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 template<typename T>\r
  59 class tweened_transform\r
  60 {\r
  61         T source_;\r
  62         T dest_;\r
  63         int duration_;\r
  64         int time_;\r
  65         tweener_t tweener_;\r
  66 public: \r
  67         tweened_transform()\r
  68                 : duration_(0)\r
  69                 , time_(0)\r
  70                 , tweener_(get_tweener(L"linear")){}\r
  71         tweened_transform(const T& source, const T& dest, int duration, const std::wstring& tween = L"linear")\r
  72                 : source_(source)\r
  73                 , dest_(dest)\r
  74                 , duration_(duration)\r
  75                 , time_(0)\r
  76                 , tweener_(get_tweener(tween)){}\r
  77         \r
  78         T fetch()\r
  79         {\r
  80                 return time_ == duration_ ? dest_ : tween(static_cast<double>(time_), source_, dest_, static_cast<double>(duration_), tweener_);\r
  81         }\r
  82 \r
  83         T fetch_and_tick(int num)\r
  84         {                                               \r
  85                 time_ = std::min(time_+num, duration_);\r
  86                 return fetch();\r
  87         }\r
  88 };\r
  89 \r
  90 struct mixer::implementation : boost::noncopyable\r
  91 {               \r
  92         safe_ptr<diagnostics::graph>    graph_;\r
  93         boost::timer                                    mix_timer_;\r
  94 \r
  95         safe_ptr<mixer::target_t>               target_;\r
  96         mutable tbb::spin_mutex                 format_desc_mutex_;\r
  97         video_format_desc                               format_desc_;\r
  98         safe_ptr<ogl_device>                    ogl_;\r
  99         \r
 100         audio_mixer     audio_mixer_;\r
 101         image_mixer image_mixer_;\r
 102         \r
 103         std::unordered_map<int, tweened_transform<core::frame_transform>> transforms_;  \r
 104         std::unordered_map<int, blend_mode::type> blend_modes_;\r
 105                         \r
 106         executor executor_;\r
 107 \r
 108 public:\r
 109         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
 110                 : graph_(graph)\r
 111                 , target_(target)\r
 112                 , format_desc_(format_desc)\r
 113                 , ogl_(ogl)\r
 114                 , image_mixer_(ogl)\r
 115                 , executor_(L"mixer")\r
 116         {                       \r
 117                 graph_->set_color("mix-time", diagnostics::color(1.0f, 0.0f, 0.9f));\r
 118         }\r
 119         \r
 120         void send(const std::pair<std::map<int, safe_ptr<core::basic_frame>>, std::shared_ptr<void>>& packet)\r
 121         {                       \r
 122                 executor_.begin_invoke([=]\r
 123                 {               \r
 124                         try\r
 125                         {\r
 126                                 mix_timer_.restart();\r
 127 \r
 128                                 auto frames = packet.first;\r
 129                                 \r
 130                                 BOOST_FOREACH(auto& frame, frames)\r
 131                                 {\r
 132                                         auto blend_it = blend_modes_.find(frame.first);\r
 133                                         image_mixer_.begin_layer(blend_it != blend_modes_.end() ? blend_it->second : blend_mode::normal);\r
 134                                 \r
 135                                         auto frame1 = make_safe<core::basic_frame>(frame.second);\r
 136                                         frame1->get_frame_transform() = transforms_[frame.first].fetch_and_tick(1);\r
 137 \r
 138                                         if(format_desc_.field_mode != core::field_mode::progressive)\r
 139                                         {                               \r
 140                                                 auto frame2 = make_safe<core::basic_frame>(frame.second);\r
 141                                                 frame2->get_frame_transform() = transforms_[frame.first].fetch_and_tick(1);\r
 142                                                 frame1 = core::basic_frame::interlace(frame1, frame2, format_desc_.field_mode);\r
 143                                         }\r
 144                                                                         \r
 145                                         frame1->accept(audio_mixer_);                                   \r
 146                                         frame1->accept(image_mixer_);\r
 147 \r
 148                                         image_mixer_.end_layer();\r
 149                                 }\r
 150 \r
 151                                 auto image = image_mixer_(format_desc_);\r
 152                                 auto audio = audio_mixer_(format_desc_);\r
 153                                 image.wait();\r
 154 \r
 155                                 graph_->update_value("mix-time", mix_timer_.elapsed()*format_desc_.fps*0.5);\r
 156 \r
 157                                 target_->send(std::make_pair(make_safe<read_frame>(ogl_, format_desc_.size, std::move(image.get()), std::move(audio)), packet.second));                                 \r
 158                         }\r
 159                         catch(...)\r
 160                         {\r
 161                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 162                         }       \r
 163                 });             \r
 164         }\r
 165                                         \r
 166         safe_ptr<core::write_frame> create_frame(const void* tag, const core::pixel_format_desc& desc)\r
 167         {               \r
 168                 return make_safe<write_frame>(ogl_, tag, desc);\r
 169         }\r
 170                         \r
 171         void set_transform(int index, const frame_transform& transform, unsigned int mix_duration, const std::wstring& tween)\r
 172         {\r
 173                 executor_.begin_invoke([=]\r
 174                 {\r
 175                         auto src = transforms_[index].fetch();\r
 176                         auto dst = transform;\r
 177                         transforms_[index] = tweened_transform<frame_transform>(src, dst, mix_duration, tween);\r
 178                 }, high_priority);\r
 179         }\r
 180                                 \r
 181         void apply_transform(int index, const std::function<frame_transform(frame_transform)>& transform, unsigned int mix_duration, const std::wstring& tween)\r
 182         {\r
 183                 executor_.begin_invoke([=]\r
 184                 {\r
 185                         auto src = transforms_[index].fetch();\r
 186                         auto dst = transform(src);\r
 187                         transforms_[index] = tweened_transform<frame_transform>(src, dst, mix_duration, tween);\r
 188                 }, high_priority);\r
 189         }\r
 190 \r
 191         void clear_transforms(int index)\r
 192         {\r
 193                 executor_.begin_invoke([=]\r
 194                 {\r
 195                         transforms_.erase(index);\r
 196                         blend_modes_.erase(index);\r
 197                 }, high_priority);\r
 198         }\r
 199 \r
 200         void clear_transforms()\r
 201         {\r
 202                 executor_.begin_invoke([=]\r
 203                 {\r
 204                         transforms_.clear();\r
 205                         blend_modes_.clear();\r
 206                 }, high_priority);\r
 207         }\r
 208                 \r
 209         void set_blend_mode(int index, blend_mode::type value)\r
 210         {\r
 211                 executor_.begin_invoke([=]\r
 212                 {\r
 213                         blend_modes_[index] = value;\r
 214                 }, high_priority);\r
 215         }\r
 216         \r
 217         void set_video_format_desc(const video_format_desc& format_desc)\r
 218         {\r
 219                 executor_.begin_invoke([=]\r
 220                 {\r
 221                         tbb::spin_mutex::scoped_lock lock(format_desc_mutex_);\r
 222                         format_desc_ = format_desc;\r
 223                 });\r
 224         }\r
 225 \r
 226         core::video_format_desc get_video_format_desc() const // nothrow\r
 227         {\r
 228                 tbb::spin_mutex::scoped_lock lock(format_desc_mutex_);\r
 229                 return format_desc_;\r
 230         }\r
 231 \r
 232         boost::unique_future<boost::property_tree::wptree> info() const\r
 233         {\r
 234                 boost::promise<boost::property_tree::wptree> info;\r
 235                 info.set_value(boost::property_tree::wptree());\r
 236                 return info.get_future();\r
 237         }\r
 238 };\r
 239         \r
 240 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
 241         : impl_(new implementation(graph, target, format_desc, ogl)){}\r
 242 void mixer::send(const std::pair<std::map<int, safe_ptr<core::basic_frame>>, std::shared_ptr<void>>& frames){ impl_->send(frames);}\r
 243 core::video_format_desc mixer::get_video_format_desc() const { return impl_->get_video_format_desc(); }\r
 244 safe_ptr<core::write_frame> mixer::create_frame(const void* tag, const core::pixel_format_desc& desc){ return impl_->create_frame(tag, desc); }         \r
 245 void mixer::set_frame_transform(int index, const core::frame_transform& transform, unsigned int mix_duration, const std::wstring& tween){impl_->set_transform(index, transform, mix_duration, tween);}\r
 246 void mixer::apply_frame_transform(int index, const std::function<core::frame_transform(core::frame_transform)>& transform, unsigned int mix_duration, const std::wstring& tween)\r
 247 {impl_->apply_transform(index, transform, mix_duration, tween);}\r
 248 void mixer::clear_transforms(int index){impl_->clear_transforms(index);}\r
 249 void mixer::clear_transforms(){impl_->clear_transforms();}\r
 250 void mixer::set_blend_mode(int index, blend_mode::type value){impl_->set_blend_mode(index, value);}\r
 251 void mixer::set_video_format_desc(const video_format_desc& format_desc){impl_->set_video_format_desc(format_desc);}\r
 252 boost::unique_future<boost::property_tree::wptree> mixer::info() const{return impl_->info();}\r
 253 }}