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

   1 /*\r
   2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 *  This file is part of CasparCG.\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 */\r
  20 #include "../StdAfx.h"\r
  21 \r
  22 #include "mixer.h"\r
  23 \r
  24 #include "read_frame.h"\r
  25 #include "write_frame.h"\r
  26 \r
  27 #include "audio/audio_mixer.h"\r
  28 #include "image/image_mixer.h"\r
  29 \r
  30 #include <common/env.h>\r
  31 #include <common/concurrency/executor.h>\r
  32 #include <common/exception/exceptions.h>\r
  33 #include <common/gl/gl_check.h>\r
  34 #include <common/utility/tweener.h>\r
  35 \r
  36 #include <core/mixer/read_frame.h>\r
  37 #include <core/mixer/write_frame.h>\r
  38 #include <core/producer/frame/basic_frame.h>\r
  39 #include <core/producer/frame/frame_factory.h>\r
  40 #include <core/producer/frame/frame_transform.h>\r
  41 #include <core/producer/frame/pixel_format.h>\r
  42 \r
  43 #include <core/video_format.h>\r
  44 \r
  45 #include <boost/foreach.hpp>\r
  46 #include <boost/timer.hpp>\r
  47 #include <boost/property_tree/ptree.hpp>\r
  48 \r
  49 #include <tbb/concurrent_queue.h>\r
  50 #include <tbb/spin_mutex.h>\r
  51 \r
  52 #include <unordered_map>\r
  53 \r
  54 namespace caspar { namespace core {\r
  55                 \r
  56 template<typename T>\r
  57 class tweened_transform\r
  58 {\r
  59         T source_;\r
  60         T dest_;\r
  61         int duration_;\r
  62         int time_;\r
  63         tweener_t tweener_;\r
  64 public: \r
  65         tweened_transform()\r
  66                 : duration_(0)\r
  67                 , time_(0)\r
  68                 , tweener_(get_tweener(L"linear")){}\r
  69         tweened_transform(const T& source, const T& dest, int duration, const std::wstring& tween = L"linear")\r
  70                 : source_(source)\r
  71                 , dest_(dest)\r
  72                 , duration_(duration)\r
  73                 , time_(0)\r
  74                 , tweener_(get_tweener(tween)){}\r
  75         \r
  76         T fetch()\r
  77         {\r
  78                 return time_ == duration_ ? dest_ : tween(static_cast<double>(time_), source_, dest_, static_cast<double>(duration_), tweener_);\r
  79         }\r
  80 \r
  81         T fetch_and_tick(int num)\r
  82         {                                               \r
  83                 time_ = std::min(time_+num, duration_);\r
  84                 return fetch();\r
  85         }\r
  86 };\r
  87 \r
  88 struct mixer::implementation : boost::noncopyable\r
  89 {               \r
  90         safe_ptr<diagnostics::graph>    graph_;\r
  91         boost::timer                                    mix_timer_;\r
  92 \r
  93         safe_ptr<mixer::target_t>               target_;\r
  94         mutable tbb::spin_mutex                 format_desc_mutex_;\r
  95         video_format_desc                               format_desc_;\r
  96         safe_ptr<ogl_device>                    ogl_;\r
  97         \r
  98         audio_mixer     audio_mixer_;\r
  99         image_mixer image_mixer_;\r
 100         \r
 101         std::unordered_map<int, tweened_transform<core::frame_transform>> transforms_;  \r
 102         std::unordered_map<int, blend_mode::type> blend_modes_;\r
 103                         \r
 104         executor executor_;\r
 105 \r
 106 public:\r
 107         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
 108                 : graph_(graph)\r
 109                 , target_(target)\r
 110                 , format_desc_(format_desc)\r
 111                 , ogl_(ogl)\r
 112                 , image_mixer_(ogl)\r
 113                 , executor_(L"mixer")\r
 114         {                       \r
 115                 graph_->set_color("mix-time", diagnostics::color(1.0f, 0.0f, 0.9f));\r
 116         }\r
 117         \r
 118         void send(const std::pair<std::map<int, safe_ptr<core::basic_frame>>, std::shared_ptr<void>>& packet)\r
 119         {                       \r
 120                 executor_.begin_invoke([=]\r
 121                 {               \r
 122                         try\r
 123                         {\r
 124                                 mix_timer_.restart();\r
 125 \r
 126                                 auto frames = packet.first;\r
 127                                 \r
 128                                 BOOST_FOREACH(auto& frame, frames)\r
 129                                 {\r
 130                                         auto blend_it = blend_modes_.find(frame.first);\r
 131                                         image_mixer_.begin_layer(blend_it != blend_modes_.end() ? blend_it->second : blend_mode::normal);\r
 132                                 \r
 133                                         auto frame1 = make_safe<core::basic_frame>(frame.second);\r
 134                                         frame1->get_frame_transform() = transforms_[frame.first].fetch_and_tick(1);\r
 135 \r
 136                                         if(format_desc_.field_mode != core::field_mode::progressive)\r
 137                                         {                               \r
 138                                                 auto frame2 = make_safe<core::basic_frame>(frame.second);\r
 139                                                 frame2->get_frame_transform() = transforms_[frame.first].fetch_and_tick(1);\r
 140                                                 frame1 = core::basic_frame::interlace(frame1, frame2, format_desc_.field_mode);\r
 141                                         }\r
 142                                                                         \r
 143                                         frame1->accept(audio_mixer_);                                   \r
 144                                         frame1->accept(image_mixer_);\r
 145 \r
 146                                         image_mixer_.end_layer();\r
 147                                 }\r
 148 \r
 149                                 auto image = image_mixer_.render(format_desc_);\r
 150                                 auto audio = audio_mixer_.mix(format_desc_);\r
 151                                 image.wait();\r
 152 \r
 153                                 graph_->update_value("mix-time", mix_timer_.elapsed()*format_desc_.fps*0.5);\r
 154 \r
 155                                 target_->send(std::make_pair(make_safe<read_frame>(ogl_, format_desc_.size, std::move(image.get()), std::move(audio)), packet.second));                                 \r
 156                         }\r
 157                         catch(...)\r
 158                         {\r
 159                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 160                         }       \r
 161                 });             \r
 162         }\r
 163                                         \r
 164         safe_ptr<core::write_frame> create_frame(const void* tag, const core::pixel_format_desc& desc)\r
 165         {               \r
 166                 return image_mixer_.create_frame(tag, desc);\r
 167         }\r
 168                         \r
 169         void set_transform(int index, const frame_transform& transform, unsigned int mix_duration, const std::wstring& tween)\r
 170         {\r
 171                 executor_.begin_invoke([=]\r
 172                 {\r
 173                         auto src = transforms_[index].fetch();\r
 174                         auto dst = transform;\r
 175                         transforms_[index] = tweened_transform<frame_transform>(src, dst, mix_duration, tween);\r
 176                 }, high_priority);\r
 177         }\r
 178                                 \r
 179         void apply_transform(int index, const std::function<frame_transform(frame_transform)>& transform, unsigned int mix_duration, const std::wstring& tween)\r
 180         {\r
 181                 executor_.begin_invoke([=]\r
 182                 {\r
 183                         auto src = transforms_[index].fetch();\r
 184                         auto dst = transform(src);\r
 185                         transforms_[index] = tweened_transform<frame_transform>(src, dst, mix_duration, tween);\r
 186                 }, high_priority);\r
 187         }\r
 188 \r
 189         void clear_transforms(int index)\r
 190         {\r
 191                 executor_.begin_invoke([=]\r
 192                 {\r
 193                         transforms_.erase(index);\r
 194                         blend_modes_.erase(index);\r
 195                 }, high_priority);\r
 196         }\r
 197 \r
 198         void clear_transforms()\r
 199         {\r
 200                 executor_.begin_invoke([=]\r
 201                 {\r
 202                         transforms_.clear();\r
 203                         blend_modes_.clear();\r
 204                 }, high_priority);\r
 205         }\r
 206                 \r
 207         void set_blend_mode(int index, blend_mode::type value)\r
 208         {\r
 209                 executor_.begin_invoke([=]\r
 210                 {\r
 211                         blend_modes_[index] = value;\r
 212                 }, high_priority);\r
 213         }\r
 214         \r
 215         void set_video_format_desc(const video_format_desc& format_desc)\r
 216         {\r
 217                 executor_.begin_invoke([=]\r
 218                 {\r
 219                         tbb::spin_mutex::scoped_lock lock(format_desc_mutex_);\r
 220                         format_desc_ = format_desc;\r
 221                 });\r
 222         }\r
 223 \r
 224         core::video_format_desc get_video_format_desc() const // nothrow\r
 225         {\r
 226                 tbb::spin_mutex::scoped_lock lock(format_desc_mutex_);\r
 227                 return format_desc_;\r
 228         }\r
 229 \r
 230         boost::unique_future<boost::property_tree::wptree> info() const\r
 231         {\r
 232                 boost::promise<boost::property_tree::wptree> info;\r
 233                 info.set_value(boost::property_tree::wptree());\r
 234                 return info.get_future();\r
 235         }\r
 236 };\r
 237         \r
 238 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
 239         : impl_(new implementation(graph, target, format_desc, ogl)){}\r
 240 void mixer::send(const std::pair<std::map<int, safe_ptr<core::basic_frame>>, std::shared_ptr<void>>& frames){ impl_->send(frames);}\r
 241 core::video_format_desc mixer::get_video_format_desc() const { return impl_->get_video_format_desc(); }\r
 242 safe_ptr<core::write_frame> mixer::create_frame(const void* tag, const core::pixel_format_desc& desc){ return impl_->create_frame(tag, desc); }         \r
 243 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
 244 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
 245 {impl_->apply_transform(index, transform, mix_duration, tween);}\r
 246 void mixer::clear_transforms(int index){impl_->clear_transforms(index);}\r
 247 void mixer::clear_transforms(){impl_->clear_transforms();}\r
 248 void mixer::set_blend_mode(int index, blend_mode::type value){impl_->set_blend_mode(index, value);}\r
 249 void mixer::set_video_format_desc(const video_format_desc& format_desc){impl_->set_video_format_desc(format_desc);}\r
 250 boost::unique_future<boost::property_tree::wptree> mixer::info() const{return impl_->info();}\r
 251 }}