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